diff options
| author |  waker <wakeroid@gmail.com> | 2010-11-01 21:03:21 +0100 |
|---|---|---|
| committer | waker <wakeroid@gmail.com> | 2010-11-01 21:03:21 +0100 |
| commit | 0a4c7284f055d0ef86ad849163cabb34e940d4c2 (patch) | |
| tree | f62cae8ce49128051eb7e56e191dbfb5cb58fa39 | |
| parent | e0e7250cf34b03edb61195f0e3d28aeb85922372 (diff) | |
ffmpeg plugin static build WIP
35 files changed, 8618 insertions, 4 deletions
diff --git a/configure.ac b/configure.ac index 731b7815..a486023d 100644 --- a/configure.ac +++ b/configure.ac @@ -100,7 +100,7 @@ AC_ARG_ENABLE(portable, [ --enable-portable make portable static build (d if test "x$enable_portable" != "xno" ; then AC_DEFINE_UNQUOTED([PORTABLE], [1], [Define if building portable version]) PORTABLE=yes - PREFIXFLAGS="-DPREFIX=donotuse -DLIBDIR=donotuse -DDOCDIR=donotuse -I./include" + PREFIXFLAGS="-DPREFIX=donotuse -DLIBDIR=donotuse -DDOCDIR=donotuse -I./include -I../../include" else PREFIXFLAGS=" -DLIBDIR=\\\"$libdir\\\" -DPREFIX=\\\"$prefix\\\" -DDOCDIR=\\\"$docdir\\\"" fi @@ -131,8 +131,15 @@ if test "x$enable_alsa" != "xno" ; then fi if test "x$enable_ffmpeg" != "xno" ; then +echo "ffmpeg build is enabled" +if test "x$enable_portable" != "xno" ; then + FFMPEG_DEPS_LIBS="../../$LIB/libavcodec.a -lpthread ../../$LIB/libavformat.a ../../$LIB/libavcodec.a ../../$LIB/libavutil.a -lm ../../$LIB/libz.a " + AC_SUBST(FFMPEG_DEPS_LIBS) + HAVE_FFMPEG=yes +else PKG_CHECK_MODULES(FFMPEG_DEPS, libavcodec >= 51.0.0 libavutil libavformat >= 52.0.0, HAVE_FFMPEG=yes, HAVE_FFMPEG=no) fi +fi if test "x$enable_pulse" != "xno" ; then PKG_CHECK_MODULES(PULSE_DEPS, libpulse-simple, HAVE_PULSE=yes, HAVE_PULSE=no) @@ -297,10 +304,14 @@ if test "x$enable_alsa" != "xno" ; then fi if test "x$enable_ffmpeg" != "xno" ; then +if test "x$enable_portable" = "xno" ; then if test "x$HAVE_FFMPEG" = "xyes" ; then HAVE_FFMPEGPLUGIN=yes AC_CHECK_HEADER([ffmpeg/avformat.h], FFMPEG_DEPS_CFLAGS="$FFMPEG_DEPS_CFLAGS -D FFMPEG_OLD") fi +else + HAVE_FFMPEGPLUGIN=yes +fi fi if test "x$enable_hotkeys" != "xno" ; then diff --git a/include/libavcodec/avcodec.h b/include/libavcodec/avcodec.h new file mode 100644 index 00000000..974e87cc --- /dev/null +++ b/include/libavcodec/avcodec.h @@ -0,0 +1,3968 @@ +/* + * copyright (c) 2001 Fabrice Bellard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_AVCODEC_H +#define AVCODEC_AVCODEC_H + +/** + * @file + * external API header + */ + +#include <errno.h> +#include "libavutil/avutil.h" + +#define LIBAVCODEC_VERSION_MAJOR 52 +#define LIBAVCODEC_VERSION_MINOR 72 +#define LIBAVCODEC_VERSION_MICRO 2 + +#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ + LIBAVCODEC_VERSION_MINOR, \ + LIBAVCODEC_VERSION_MICRO) +#define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \ + LIBAVCODEC_VERSION_MINOR, \ + LIBAVCODEC_VERSION_MICRO) +#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT + +#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION) + +#define AV_NOPTS_VALUE INT64_C(0x8000000000000000) +#define AV_TIME_BASE 1000000 +#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE} + +/** + * Identifies the syntax and semantics of the bitstream. + * The principle is roughly: + * Two decoders with the same ID can decode the same streams. + * Two encoders with the same ID can encode compatible streams. + * There may be slight deviations from the principle due to implementation + * details. + * + * If you add a codec ID to this list, add it so that + * 1. no value of a existing codec ID changes (that would break ABI), + * 2. it is as close as possible to similar codecs. + */ +enum CodecID { + CODEC_ID_NONE, + + /* video codecs */ + CODEC_ID_MPEG1VIDEO, + CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding + CODEC_ID_MPEG2VIDEO_XVMC, + CODEC_ID_H261, + CODEC_ID_H263, + CODEC_ID_RV10, + CODEC_ID_RV20, + CODEC_ID_MJPEG, + CODEC_ID_MJPEGB, + CODEC_ID_LJPEG, + CODEC_ID_SP5X, + CODEC_ID_JPEGLS, + CODEC_ID_MPEG4, + CODEC_ID_RAWVIDEO, + CODEC_ID_MSMPEG4V1, + CODEC_ID_MSMPEG4V2, + CODEC_ID_MSMPEG4V3, + CODEC_ID_WMV1, + CODEC_ID_WMV2, + CODEC_ID_H263P, + CODEC_ID_H263I, + CODEC_ID_FLV1, + CODEC_ID_SVQ1, + CODEC_ID_SVQ3, + CODEC_ID_DVVIDEO, + CODEC_ID_HUFFYUV, + CODEC_ID_CYUV, + CODEC_ID_H264, + CODEC_ID_INDEO3, + CODEC_ID_VP3, + CODEC_ID_THEORA, + CODEC_ID_ASV1, + CODEC_ID_ASV2, + CODEC_ID_FFV1, + CODEC_ID_4XM, + CODEC_ID_VCR1, + CODEC_ID_CLJR, + CODEC_ID_MDEC, + CODEC_ID_ROQ, + CODEC_ID_INTERPLAY_VIDEO, + CODEC_ID_XAN_WC3, + CODEC_ID_XAN_WC4, + CODEC_ID_RPZA, + CODEC_ID_CINEPAK, + CODEC_ID_WS_VQA, + CODEC_ID_MSRLE, + CODEC_ID_MSVIDEO1, + CODEC_ID_IDCIN, + CODEC_ID_8BPS, + CODEC_ID_SMC, + CODEC_ID_FLIC, + CODEC_ID_TRUEMOTION1, + CODEC_ID_VMDVIDEO, + CODEC_ID_MSZH, + CODEC_ID_ZLIB, + CODEC_ID_QTRLE, + CODEC_ID_SNOW, + CODEC_ID_TSCC, + CODEC_ID_ULTI, + CODEC_ID_QDRAW, + CODEC_ID_VIXL, + CODEC_ID_QPEG, +#if LIBAVCODEC_VERSION_MAJOR < 53 + CODEC_ID_XVID, +#endif + CODEC_ID_PNG, + CODEC_ID_PPM, + CODEC_ID_PBM, + CODEC_ID_PGM, + CODEC_ID_PGMYUV, + CODEC_ID_PAM, + CODEC_ID_FFVHUFF, + CODEC_ID_RV30, + CODEC_ID_RV40, + CODEC_ID_VC1, + CODEC_ID_WMV3, + CODEC_ID_LOCO, + CODEC_ID_WNV1, + CODEC_ID_AASC, + CODEC_ID_INDEO2, + CODEC_ID_FRAPS, + CODEC_ID_TRUEMOTION2, + CODEC_ID_BMP, + CODEC_ID_CSCD, + CODEC_ID_MMVIDEO, + CODEC_ID_ZMBV, + CODEC_ID_AVS, + CODEC_ID_SMACKVIDEO, + CODEC_ID_NUV, + CODEC_ID_KMVC, + CODEC_ID_FLASHSV, + CODEC_ID_CAVS, + CODEC_ID_JPEG2000, + CODEC_ID_VMNC, + CODEC_ID_VP5, + CODEC_ID_VP6, + CODEC_ID_VP6F, + CODEC_ID_TARGA, + CODEC_ID_DSICINVIDEO, + CODEC_ID_TIERTEXSEQVIDEO, + CODEC_ID_TIFF, + CODEC_ID_GIF, + CODEC_ID_FFH264, + CODEC_ID_DXA, + CODEC_ID_DNXHD, + CODEC_ID_THP, + CODEC_ID_SGI, + CODEC_ID_C93, + CODEC_ID_BETHSOFTVID, + CODEC_ID_PTX, + CODEC_ID_TXD, + CODEC_ID_VP6A, + CODEC_ID_AMV, + CODEC_ID_VB, + CODEC_ID_PCX, + CODEC_ID_SUNRAST, + CODEC_ID_INDEO4, + CODEC_ID_INDEO5, + CODEC_ID_MIMIC, + CODEC_ID_RL2, + CODEC_ID_8SVX_EXP, + CODEC_ID_8SVX_FIB, + CODEC_ID_ESCAPE124, + CODEC_ID_DIRAC, + CODEC_ID_BFI, + CODEC_ID_CMV, + CODEC_ID_MOTIONPIXELS, + CODEC_ID_TGV, + CODEC_ID_TGQ, + CODEC_ID_TQI, + CODEC_ID_AURA, + CODEC_ID_AURA2, + CODEC_ID_V210X, + CODEC_ID_TMV, + CODEC_ID_V210, + CODEC_ID_DPX, + CODEC_ID_MAD, + CODEC_ID_FRWU, + CODEC_ID_FLASHSV2, + CODEC_ID_CDGRAPHICS, + CODEC_ID_R210, + CODEC_ID_ANM, + CODEC_ID_BINKVIDEO, + CODEC_ID_IFF_ILBM, + CODEC_ID_IFF_BYTERUN1, + CODEC_ID_KGV1, + CODEC_ID_YOP, + CODEC_ID_VP8, + + /* various PCM "codecs" */ + CODEC_ID_PCM_S16LE= 0x10000, + CODEC_ID_PCM_S16BE, + CODEC_ID_PCM_U16LE, + CODEC_ID_PCM_U16BE, + CODEC_ID_PCM_S8, + CODEC_ID_PCM_U8, + CODEC_ID_PCM_MULAW, + CODEC_ID_PCM_ALAW, + CODEC_ID_PCM_S32LE, + CODEC_ID_PCM_S32BE, + CODEC_ID_PCM_U32LE, + CODEC_ID_PCM_U32BE, + CODEC_ID_PCM_S24LE, + CODEC_ID_PCM_S24BE, + CODEC_ID_PCM_U24LE, + CODEC_ID_PCM_U24BE, + CODEC_ID_PCM_S24DAUD, + CODEC_ID_PCM_ZORK, + CODEC_ID_PCM_S16LE_PLANAR, + CODEC_ID_PCM_DVD, + CODEC_ID_PCM_F32BE, + CODEC_ID_PCM_F32LE, + CODEC_ID_PCM_F64BE, + CODEC_ID_PCM_F64LE, + CODEC_ID_PCM_BLURAY, + + /* various ADPCM codecs */ + CODEC_ID_ADPCM_IMA_QT= 0x11000, + CODEC_ID_ADPCM_IMA_WAV, + CODEC_ID_ADPCM_IMA_DK3, + CODEC_ID_ADPCM_IMA_DK4, + CODEC_ID_ADPCM_IMA_WS, + CODEC_ID_ADPCM_IMA_SMJPEG, + CODEC_ID_ADPCM_MS, + CODEC_ID_ADPCM_4XM, + CODEC_ID_ADPCM_XA, + CODEC_ID_ADPCM_ADX, + CODEC_ID_ADPCM_EA, + CODEC_ID_ADPCM_G726, + CODEC_ID_ADPCM_CT, + CODEC_ID_ADPCM_SWF, + CODEC_ID_ADPCM_YAMAHA, + CODEC_ID_ADPCM_SBPRO_4, + CODEC_ID_ADPCM_SBPRO_3, + CODEC_ID_ADPCM_SBPRO_2, + CODEC_ID_ADPCM_THP, + CODEC_ID_ADPCM_IMA_AMV, + CODEC_ID_ADPCM_EA_R1, + CODEC_ID_ADPCM_EA_R3, + CODEC_ID_ADPCM_EA_R2, + CODEC_ID_ADPCM_IMA_EA_SEAD, + CODEC_ID_ADPCM_IMA_EA_EACS, + CODEC_ID_ADPCM_EA_XAS, + CODEC_ID_ADPCM_EA_MAXIS_XA, + CODEC_ID_ADPCM_IMA_ISS, + + /* AMR */ + CODEC_ID_AMR_NB= 0x12000, + CODEC_ID_AMR_WB, + + /* RealAudio codecs*/ + CODEC_ID_RA_144= 0x13000, + CODEC_ID_RA_288, + + /* various DPCM codecs */ + CODEC_ID_ROQ_DPCM= 0x14000, + CODEC_ID_INTERPLAY_DPCM, + CODEC_ID_XAN_DPCM, + CODEC_ID_SOL_DPCM, + + /* audio codecs */ + CODEC_ID_MP2= 0x15000, + CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3 + CODEC_ID_AAC, + CODEC_ID_AC3, + CODEC_ID_DTS, + CODEC_ID_VORBIS, + CODEC_ID_DVAUDIO, + CODEC_ID_WMAV1, + CODEC_ID_WMAV2, + CODEC_ID_MACE3, + CODEC_ID_MACE6, + CODEC_ID_VMDAUDIO, + CODEC_ID_SONIC, + CODEC_ID_SONIC_LS, + CODEC_ID_FLAC, + CODEC_ID_MP3ADU, + CODEC_ID_MP3ON4, + CODEC_ID_SHORTEN, + CODEC_ID_ALAC, + CODEC_ID_WESTWOOD_SND1, + CODEC_ID_GSM, ///< as in Berlin toast format + CODEC_ID_QDM2, + CODEC_ID_COOK, + CODEC_ID_TRUESPEECH, + CODEC_ID_TTA, + CODEC_ID_SMACKAUDIO, + CODEC_ID_QCELP, + CODEC_ID_WAVPACK, + CODEC_ID_DSICINAUDIO, + CODEC_ID_IMC, + CODEC_ID_MUSEPACK7, + CODEC_ID_MLP, + CODEC_ID_GSM_MS, /* as found in WAV */ + CODEC_ID_ATRAC3, + CODEC_ID_VOXWARE, + CODEC_ID_APE, + CODEC_ID_NELLYMOSER, + CODEC_ID_MUSEPACK8, + CODEC_ID_SPEEX, + CODEC_ID_WMAVOICE, + CODEC_ID_WMAPRO, + CODEC_ID_WMALOSSLESS, + CODEC_ID_ATRAC3P, + CODEC_ID_EAC3, + CODEC_ID_SIPR, + CODEC_ID_MP1, + CODEC_ID_TWINVQ, + CODEC_ID_TRUEHD, + CODEC_ID_MP4ALS, + CODEC_ID_ATRAC1, + CODEC_ID_BINKAUDIO_RDFT, + CODEC_ID_BINKAUDIO_DCT, + + /* subtitle codecs */ + CODEC_ID_DVD_SUBTITLE= 0x17000, + CODEC_ID_DVB_SUBTITLE, + CODEC_ID_TEXT, ///< raw UTF-8 text + CODEC_ID_XSUB, + CODEC_ID_SSA, + CODEC_ID_MOV_TEXT, + CODEC_ID_HDMV_PGS_SUBTITLE, + CODEC_ID_DVB_TELETEXT, + + /* other specific kind of codecs (generally used for attachments) */ + CODEC_ID_TTF= 0x18000, + + CODEC_ID_PROBE= 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it + + CODEC_ID_MPEG2TS= 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS + * stream (only used by libavformat) */ +}; + +#if LIBAVCODEC_VERSION_MAJOR < 53 +#define CodecType AVMediaType + +#define CODEC_TYPE_UNKNOWN AVMEDIA_TYPE_UNKNOWN +#define CODEC_TYPE_VIDEO AVMEDIA_TYPE_VIDEO +#define CODEC_TYPE_AUDIO AVMEDIA_TYPE_AUDIO +#define CODEC_TYPE_DATA AVMEDIA_TYPE_DATA +#define CODEC_TYPE_SUBTITLE AVMEDIA_TYPE_SUBTITLE +#define CODEC_TYPE_ATTACHMENT AVMEDIA_TYPE_ATTACHMENT +#define CODEC_TYPE_NB AVMEDIA_TYPE_NB +#endif + +/** + * all in native-endian format + */ +enum SampleFormat { + SAMPLE_FMT_NONE = -1, + SAMPLE_FMT_U8, ///< unsigned 8 bits + SAMPLE_FMT_S16, ///< signed 16 bits + SAMPLE_FMT_S32, ///< signed 32 bits + SAMPLE_FMT_FLT, ///< float + SAMPLE_FMT_DBL, ///< double + SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec +}; + +/* Audio channel masks */ +#define CH_FRONT_LEFT 0x00000001 +#define CH_FRONT_RIGHT 0x00000002 +#define CH_FRONT_CENTER 0x00000004 +#define CH_LOW_FREQUENCY 0x00000008 +#define CH_BACK_LEFT 0x00000010 +#define CH_BACK_RIGHT 0x00000020 +#define CH_FRONT_LEFT_OF_CENTER 0x00000040 +#define CH_FRONT_RIGHT_OF_CENTER 0x00000080 +#define CH_BACK_CENTER 0x00000100 +#define CH_SIDE_LEFT 0x00000200 +#define CH_SIDE_RIGHT 0x00000400 +#define CH_TOP_CENTER 0x00000800 +#define CH_TOP_FRONT_LEFT 0x00001000 +#define CH_TOP_FRONT_CENTER 0x00002000 +#define CH_TOP_FRONT_RIGHT 0x00004000 +#define CH_TOP_BACK_LEFT 0x00008000 +#define CH_TOP_BACK_CENTER 0x00010000 +#define CH_TOP_BACK_RIGHT 0x00020000 +#define CH_STEREO_LEFT 0x20000000 ///< Stereo downmix. +#define CH_STEREO_RIGHT 0x40000000 ///< See CH_STEREO_LEFT. + +/** Channel mask value used for AVCodecContext.request_channel_layout + to indicate that the user requests the channel order of the decoder output + to be the native codec channel order. */ +#define CH_LAYOUT_NATIVE 0x8000000000000000LL + +/* Audio channel convenience macros */ +#define CH_LAYOUT_MONO (CH_FRONT_CENTER) +#define CH_LAYOUT_STEREO (CH_FRONT_LEFT|CH_FRONT_RIGHT) +#define CH_LAYOUT_2_1 (CH_LAYOUT_STEREO|CH_BACK_CENTER) +#define CH_LAYOUT_SURROUND (CH_LAYOUT_STEREO|CH_FRONT_CENTER) +#define CH_LAYOUT_4POINT0 (CH_LAYOUT_SURROUND|CH_BACK_CENTER) +#define CH_LAYOUT_2_2 (CH_LAYOUT_STEREO|CH_SIDE_LEFT|CH_SIDE_RIGHT) +#define CH_LAYOUT_QUAD (CH_LAYOUT_STEREO|CH_BACK_LEFT|CH_BACK_RIGHT) +#define CH_LAYOUT_5POINT0 (CH_LAYOUT_SURROUND|CH_SIDE_LEFT|CH_SIDE_RIGHT) +#define CH_LAYOUT_5POINT1 (CH_LAYOUT_5POINT0|CH_LOW_FREQUENCY) +#define CH_LAYOUT_5POINT0_BACK (CH_LAYOUT_SURROUND|CH_BACK_LEFT|CH_BACK_RIGHT) +#define CH_LAYOUT_5POINT1_BACK (CH_LAYOUT_5POINT0_BACK|CH_LOW_FREQUENCY) +#define CH_LAYOUT_7POINT0 (CH_LAYOUT_5POINT0|CH_BACK_LEFT|CH_BACK_RIGHT) +#define CH_LAYOUT_7POINT1 (CH_LAYOUT_5POINT1|CH_BACK_LEFT|CH_BACK_RIGHT) +#define CH_LAYOUT_7POINT1_WIDE (CH_LAYOUT_5POINT1_BACK|\ + CH_FRONT_LEFT_OF_CENTER|CH_FRONT_RIGHT_OF_CENTER) +#define CH_LAYOUT_STEREO_DOWNMIX (CH_STEREO_LEFT|CH_STEREO_RIGHT) + +/* in bytes */ +#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio + +/** + * Required number of additionally allocated bytes at the end of the input bitstream for decoding. + * This is mainly needed because some optimized bitstream readers read + * 32 or 64 bit at once and could read over the end.<br> + * Note: If the first 23 bits of the additional bytes are not 0, then damaged + * MPEG bitstreams could cause overread and segfault. + */ +#define FF_INPUT_BUFFER_PADDING_SIZE 8 + +/** + * minimum encoding buffer size + * Used to avoid some checks during header writing. + */ +#define FF_MIN_BUFFER_SIZE 16384 + + +/** + * motion estimation type. + */ +enum Motion_Est_ID { + ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed + ME_FULL, + ME_LOG, + ME_PHODS, + ME_EPZS, ///< enhanced predictive zonal search + ME_X1, ///< reserved for experiments + ME_HEX, ///< hexagon based search + ME_UMH, ///< uneven multi-hexagon search + ME_ITER, ///< iterative search + ME_TESA, ///< transformed exhaustive search algorithm +}; + +enum AVDiscard{ + /* We leave some space between them for extensions (drop some + * keyframes for intra-only or drop just some bidir frames). */ + AVDISCARD_NONE =-16, ///< discard nothing + AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi + AVDISCARD_NONREF = 8, ///< discard all non reference + AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames + AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes + AVDISCARD_ALL = 48, ///< discard all +}; + +enum AVColorPrimaries{ + AVCOL_PRI_BT709 =1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B + AVCOL_PRI_UNSPECIFIED=2, + AVCOL_PRI_BT470M =4, + AVCOL_PRI_BT470BG =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM + AVCOL_PRI_SMPTE170M =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC + AVCOL_PRI_SMPTE240M =7, ///< functionally identical to above + AVCOL_PRI_FILM =8, + AVCOL_PRI_NB , ///< Not part of ABI +}; + +enum AVColorTransferCharacteristic{ + AVCOL_TRC_BT709 =1, ///< also ITU-R BT1361 + AVCOL_TRC_UNSPECIFIED=2, + AVCOL_TRC_GAMMA22 =4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM + AVCOL_TRC_GAMMA28 =5, ///< also ITU-R BT470BG + AVCOL_TRC_NB , ///< Not part of ABI +}; + +enum AVColorSpace{ + AVCOL_SPC_RGB =0, + AVCOL_SPC_BT709 =1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B + AVCOL_SPC_UNSPECIFIED=2, + AVCOL_SPC_FCC =4, + AVCOL_SPC_BT470BG =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 + AVCOL_SPC_SMPTE170M =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above + AVCOL_SPC_SMPTE240M =7, + AVCOL_SPC_NB , ///< Not part of ABI +}; + +enum AVColorRange{ + AVCOL_RANGE_UNSPECIFIED=0, + AVCOL_RANGE_MPEG =1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges + AVCOL_RANGE_JPEG =2, ///< the normal 2^n-1 "JPEG" YUV ranges + AVCOL_RANGE_NB , ///< Not part of ABI +}; + +/** + * X X 3 4 X X are luma samples, + * 1 2 1-6 are possible chroma positions + * X X 5 6 X 0 is undefined/unknown position + */ +enum AVChromaLocation{ + AVCHROMA_LOC_UNSPECIFIED=0, + AVCHROMA_LOC_LEFT =1, ///< mpeg2/4, h264 default + AVCHROMA_LOC_CENTER =2, ///< mpeg1, jpeg, h263 + AVCHROMA_LOC_TOPLEFT =3, ///< DV + AVCHROMA_LOC_TOP =4, + AVCHROMA_LOC_BOTTOMLEFT =5, + AVCHROMA_LOC_BOTTOM =6, + AVCHROMA_LOC_NB , ///< Not part of ABI +}; + +typedef struct RcOverride{ + int start_frame; + int end_frame; + int qscale; // If this is 0 then quality_factor will be used instead. + float quality_factor; +} RcOverride; + +#define FF_MAX_B_FRAMES 16 + +/* encoding support + These flags can be passed in AVCodecContext.flags before initialization. + Note: Not everything is supported yet. +*/ + +#define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale. +#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263. +#define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC. +#define CODEC_FLAG_GMC 0x0020 ///< Use GMC. +#define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>. +#define CODEC_FLAG_PART 0x0080 ///< Use data partitioning. +/** + * The parent program guarantees that the input for B-frames containing + * streams is not written to for at least s->max_b_frames+1 frames, if + * this is not set the input will be copied. + */ +#define CODEC_FLAG_INPUT_PRESERVED 0x0100 +#define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode. +#define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode. +#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG). +#define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale. +#define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges. +#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding. +#define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random + location instead of only at frame boundaries. */ +#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization. +#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT. +#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay. +#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< Use alternate scan. +#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe. +#define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT). +/* Fx : Flag for h263+ extra options */ +#define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction +#define CODEC_FLAG_H263P_UMV 0x02000000 ///< unlimited motion vector +#define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp. +#define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon. +#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H.263 alternative inter VLC +#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC +#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter +#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000 +#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation +#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data. +#define CODEC_FLAG_CLOSED_GOP 0x80000000 +#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks. +#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size. +#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding. +#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata. +#define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow B-frames to be used as references. +#define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for B-frames +#define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock +#define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform +#define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip +#define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters +#define CODEC_FLAG2_BRDO 0x00000400 ///< B-frame rate-distortion optimization +#define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< Use MPEG-2 intra VLC table. +#define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC). +#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format. +#define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping +#define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. +#define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer. +#define CODEC_FLAG2_BIT_RESERVOIR 0x00020000 ///< Use a bit reservoir when encoding if possible +#define CODEC_FLAG2_MBTREE 0x00040000 ///< Use macroblock tree ratecontrol (x264 only) +#define CODEC_FLAG2_PSY 0x00080000 ///< Use psycho visual optimizations. +#define CODEC_FLAG2_SSIM 0x00100000 ///< Compute SSIM during encoding, error[] values are undefined. + +/* Unsupported options : + * Syntax Arithmetic coding (SAC) + * Reference Picture Selection + * Independent Segment Decoding */ +/* /Fx */ +/* codec capabilities */ + +#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback. +/** + * Codec uses get_buffer() for allocating buffers and supports custom allocators. + * If not set, it might not use get_buffer() at all or use operations that + * assume the buffer was allocated by avcodec_default_get_buffer. + */ +#define CODEC_CAP_DR1 0x0002 +/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */ +#define CODEC_CAP_PARSE_ONLY 0x0004 +#define CODEC_CAP_TRUNCATED 0x0008 +/* Codec can export data for HW decoding (XvMC). */ +#define CODEC_CAP_HWACCEL 0x0010 +/** + * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data. + * If this is not set, the codec is guaranteed to never be fed with NULL data. + */ +#define CODEC_CAP_DELAY 0x0020 +/** + * Codec can be fed a final frame with a smaller size. + * This can be used to prevent truncation of the last audio samples. + */ +#define CODEC_CAP_SMALL_LAST_FRAME 0x0040 +/** + * Codec can export data for HW decoding (VDPAU). + */ +#define CODEC_CAP_HWACCEL_VDPAU 0x0080 +/** + * Codec can output multiple frames per AVPacket + * Normally demuxers return one frame at a time, demuxers which do not do + * are connected to a parser to split what they return into proper frames. + * This flag is reserved to the very rare category of codecs which have a + * bitstream that cannot be split into frames without timeconsuming + * operations like full decoding. Demuxers carring such bitstreams thus + * may return multiple frames in a packet. This has many disadvantages like + * prohibiting stream copy in many cases thus it should only be considered + * as a last resort. + */ +#define CODEC_CAP_SUBFRAMES 0x0100 +/** + * Codec is experimental and is thus avoided in favor of non experimental + * encoders + */ +#define CODEC_CAP_EXPERIMENTAL 0x0200 + +//The following defines may change, don't expect compatibility if you use them. +#define MB_TYPE_INTRA4x4 0x0001 +#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific +#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific +#define MB_TYPE_16x16 0x0008 +#define MB_TYPE_16x8 0x0010 +#define MB_TYPE_8x16 0x0020 +#define MB_TYPE_8x8 0x0040 +#define MB_TYPE_INTERLACED 0x0080 +#define MB_TYPE_DIRECT2 0x0100 //FIXME +#define MB_TYPE_ACPRED 0x0200 +#define MB_TYPE_GMC 0x0400 +#define MB_TYPE_SKIP 0x0800 +#define MB_TYPE_P0L0 0x1000 +#define MB_TYPE_P1L0 0x2000 +#define MB_TYPE_P0L1 0x4000 +#define MB_TYPE_P1L1 0x8000 +#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) +#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) +#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) +#define MB_TYPE_QUANT 0x00010000 +#define MB_TYPE_CBP 0x00020000 +//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) + +/** + * Pan Scan area. + * This specifies the area which should be displayed. + * Note there may be multiple such areas for one frame. + */ +typedef struct AVPanScan{ + /** + * id + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + int id; + + /** + * width and height in 1/16 pel + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + int width; + int height; + + /** + * position of the top left corner in 1/16 pel for up to 3 fields/frames + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + int16_t position[3][2]; +}AVPanScan; + +#define FF_COMMON_FRAME \ + /**\ + * pointer to the picture planes.\ + * This might be different from the first allocated byte\ + * - encoding: \ + * - decoding: \ + */\ + uint8_t *data[4];\ + int linesize[4];\ + /**\ + * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\ + * This isn't used by libavcodec unless the default get/release_buffer() is used.\ + * - encoding: \ + * - decoding: \ + */\ + uint8_t *base[4];\ + /**\ + * 1 -> keyframe, 0-> not\ + * - encoding: Set by libavcodec.\ + * - decoding: Set by libavcodec.\ + */\ + int key_frame;\ +\ + /**\ + * Picture type of the frame, see ?_TYPE below.\ + * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\ + * - decoding: Set by libavcodec.\ + */\ + int pict_type;\ +\ + /**\ + * presentation timestamp in time_base units (time when frame should be shown to user)\ + * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\ + * - encoding: MUST be set by user.\ + * - decoding: Set by libavcodec.\ + */\ + int64_t pts;\ +\ + /**\ + * picture number in bitstream order\ + * - encoding: set by\ + * - decoding: Set by libavcodec.\ + */\ + int coded_picture_number;\ + /**\ + * picture number in display order\ + * - encoding: set by\ + * - decoding: Set by libavcodec.\ + */\ + int display_picture_number;\ +\ + /**\ + * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \ + * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\ + * - decoding: Set by libavcodec.\ + */\ + int quality; \ +\ + /**\ + * buffer age (1->was last buffer and dint change, 2->..., ...).\ + * Set to INT_MAX if the buffer has not been used yet.\ + * - encoding: unused\ + * - decoding: MUST be set by get_buffer().\ + */\ + int age;\ +\ + /**\ + * is this picture used as reference\ + * The values for this are the same as the MpegEncContext.picture_structure\ + * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.\ + * Set to 4 for delayed, non-reference frames.\ + * - encoding: unused\ + * - decoding: Set by libavcodec. (before get_buffer() call)).\ + */\ + int reference;\ +\ + /**\ + * QP table\ + * - encoding: unused\ + * - decoding: Set by libavcodec.\ + */\ + int8_t *qscale_table;\ + /**\ + * QP store stride\ + * - encoding: unused\ + * - decoding: Set by libavcodec.\ + */\ + int qstride;\ +\ + /**\ + * mbskip_table[mb]>=1 if MB didn't change\ + * stride= mb_width = (width+15)>>4\ + * - encoding: unused\ + * - decoding: Set by libavcodec.\ + */\ + uint8_t *mbskip_table;\ +\ + /**\ + * motion vector table\ + * @code\ + * example:\ + * int mv_sample_log2= 4 - motion_subsample_log2;\ + * int mb_width= (width+15)>>4;\ + * int mv_stride= (mb_width << mv_sample_log2) + 1;\ + * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\ + * @endcode\ + * - encoding: Set by user.\ + * - decoding: Set by libavcodec.\ + */\ + int16_t (*motion_val[2])[2];\ +\ + /**\ + * macroblock type table\ + * mb_type_base + mb_width + 2\ + * - encoding: Set by user.\ + * - decoding: Set by libavcodec.\ + */\ + uint32_t *mb_type;\ +\ + /**\ + * log2 of the size of the block which a single vector in motion_val represents: \ + * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\ + * - encoding: unused\ + * - decoding: Set by libavcodec.\ + */\ + uint8_t motion_subsample_log2;\ +\ + /**\ + * for some private data of the user\ + * - encoding: unused\ + * - decoding: Set by user.\ + */\ + void *opaque;\ +\ + /**\ + * error\ + * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\ + * - decoding: unused\ + */\ + uint64_t error[4];\ +\ + /**\ + * type of the buffer (to keep track of who has to deallocate data[*])\ + * - encoding: Set by the one who allocates it.\ + * - decoding: Set by the one who allocates it.\ + * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\ + */\ + int type;\ + \ + /**\ + * When decoding, this signals how much the picture must be delayed.\ + * extra_delay = repeat_pict / (2*fps)\ + * - encoding: unused\ + * - decoding: Set by libavcodec.\ + */\ + int repeat_pict;\ + \ + /**\ + * \ + */\ + int qscale_type;\ + \ + /**\ + * The content of the picture is interlaced.\ + * - encoding: Set by user.\ + * - decoding: Set by libavcodec. (default 0)\ + */\ + int interlaced_frame;\ + \ + /**\ + * If the content is interlaced, is top field displayed first.\ + * - encoding: Set by user.\ + * - decoding: Set by libavcodec.\ + */\ + int top_field_first;\ + \ + /**\ + * Pan scan.\ + * - encoding: Set by user.\ + * - decoding: Set by libavcodec.\ + */\ + AVPanScan *pan_scan;\ + \ + /**\ + * Tell user application that palette has changed from previous frame.\ + * - encoding: ??? (no palette-enabled encoder yet)\ + * - decoding: Set by libavcodec. (default 0).\ + */\ + int palette_has_changed;\ + \ + /**\ + * codec suggestion on buffer type if != 0\ + * - encoding: unused\ + * - decoding: Set by libavcodec. (before get_buffer() call)).\ + */\ + int buffer_hints;\ +\ + /**\ + * DCT coefficients\ + * - encoding: unused\ + * - decoding: Set by libavcodec.\ + */\ + short *dct_coeff;\ +\ + /**\ + * motion reference frame index\ + * the order in which these are stored can depend on the codec.\ + * - encoding: Set by user.\ + * - decoding: Set by libavcodec.\ + */\ + int8_t *ref_index[2];\ +\ + /**\ + * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque\ + * output in AVFrame.reordered_opaque\ + * - encoding: unused\ + * - decoding: Read by user.\ + */\ + int64_t reordered_opaque;\ +\ + /**\ + * hardware accelerator private data (FFmpeg allocated)\ + * - encoding: unused\ + * - decoding: Set by libavcodec\ + */\ + void *hwaccel_picture_private;\ + + +#define FF_QSCALE_TYPE_MPEG1 0 +#define FF_QSCALE_TYPE_MPEG2 1 +#define FF_QSCALE_TYPE_H264 2 +#define FF_QSCALE_TYPE_VP56 3 + +#define FF_BUFFER_TYPE_INTERNAL 1 +#define FF_BUFFER_TYPE_USER 2 ///< direct rendering buffers (image is (de)allocated by user) +#define FF_BUFFER_TYPE_SHARED 4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared. +#define FF_BUFFER_TYPE_COPY 8 ///< Just a (modified) copy of some other buffer, don't deallocate anything. + + +#define FF_I_TYPE 1 ///< Intra +#define FF_P_TYPE 2 ///< Predicted +#define FF_B_TYPE 3 ///< Bi-dir predicted +#define FF_S_TYPE 4 ///< S(GMC)-VOP MPEG4 +#define FF_SI_TYPE 5 ///< Switching Intra +#define FF_SP_TYPE 6 ///< Switching Predicted +#define FF_BI_TYPE 7 + +#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore). +#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer. +#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content. +#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update). + +typedef struct AVPacket { + /** + * Presentation timestamp in AVStream->time_base units; the time at which + * the decompressed packet will be presented to the user. + * Can be AV_NOPTS_VALUE if it is not stored in the file. + * pts MUST be larger or equal to dts as presentation cannot happen before + * decompression, unless one wants to view hex dumps. Some formats misuse + * the terms dts and pts/cts to mean something different. Such timestamps + * must be converted to true pts/dts before they are stored in AVPacket. + */ + int64_t pts; + /** + * Decompression timestamp in AVStream->time_base units; the time at which + * the packet is decompressed. + * Can be AV_NOPTS_VALUE if it is not stored in the file. + */ + int64_t dts; + uint8_t *data; + int size; + int stream_index; + int flags; + /** + * Duration of this packet in AVStream->time_base units, 0 if unknown. + * Equals next_pts - this_pts in presentation order. + */ + int duration; + void (*destruct)(struct AVPacket *); + void *priv; + int64_t pos; ///< byte position in stream, -1 if unknown + + /** + * Time difference in AVStream->time_base units from the pts of this + * packet to the point at which the output from the decoder has converged + * independent from the availability of previous frames. That is, the + * frames are virtually identical no matter if decoding started from + * the very first frame or from this keyframe. + * Is AV_NOPTS_VALUE if unknown. + * This field is not the display duration of the current packet. + * + * The purpose of this field is to allow seeking in streams that have no + * keyframes in the conventional sense. It corresponds to the + * recovery point SEI in H.264 and match_time_delta in NUT. It is also + * essential for some types of subtitle streams to ensure that all + * subtitles are correctly displayed after seeking. + */ + int64_t convergence_duration; +} AVPacket; +#define AV_PKT_FLAG_KEY 0x0001 +#if LIBAVCODEC_VERSION_MAJOR < 53 +#define PKT_FLAG_KEY AV_PKT_FLAG_KEY +#endif + +/** + * Audio Video Frame. + * New fields can be added to the end of FF_COMMON_FRAME with minor version + * bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. No fields should be added into AVFrame before or after + * FF_COMMON_FRAME! + * sizeof(AVFrame) must not be used outside libav*. + */ +typedef struct AVFrame { + FF_COMMON_FRAME +} AVFrame; + +/** + * main external API structure. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVCodecContext) must not be used outside libav*. + */ +typedef struct AVCodecContext { + /** + * information on struct for av_log + * - set by avcodec_alloc_context + */ + const AVClass *av_class; + /** + * the average bitrate + * - encoding: Set by user; unused for constant quantizer encoding. + * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream. + */ + int bit_rate; + + /** + * number of bits the bitstream is allowed to diverge from the reference. + * the reference can be CBR (for CBR pass1) or VBR (for pass2) + * - encoding: Set by user; unused for constant quantizer encoding. + * - decoding: unused + */ + int bit_rate_tolerance; + + /** + * CODEC_FLAG_*. + * - encoding: Set by user. + * - decoding: Set by user. + */ + int flags; + + /** + * Some codecs need additional format info. It is stored here. + * If any muxer uses this then ALL demuxers/parsers AND encoders for the + * specific codec MUST set it correctly otherwise stream copy breaks. + * In general use of this field by muxers is not recommanded. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. (FIXME: Is this OK?) + */ + int sub_id; + + /** + * Motion estimation algorithm used for video coding. + * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), + * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific] + * - encoding: MUST be set by user. + * - decoding: unused + */ + int me_method; + + /** + * some codecs need / can use extradata like Huffman tables. + * mjpeg: Huffman tables + * rv10: additional flags + * mpeg4: global headers (they can be in the bitstream or here) + * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger + * than extradata_size to avoid prolems if it is read with the bitstream reader. + * The bytewise contents of extradata must not depend on the architecture or CPU endianness. + * - encoding: Set/allocated/freed by libavcodec. + * - decoding: Set/allocated/freed by user. + */ + uint8_t *extradata; + int extradata_size; + + /** + * This is the fundamental unit of time (in seconds) in terms + * of which frame timestamps are represented. For fixed-fps content, + * timebase should be 1/framerate and timestamp increments should be + * identically 1. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + */ + AVRational time_base; + + /* video only */ + /** + * picture width / height. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + * Note: For compatibility it is possible to set this instead of + * coded_width/height before decoding. + */ + int width, height; + +#define FF_ASPECT_EXTENDED 15 + + /** + * the number of pictures in a group of pictures, or 0 for intra_only + * - encoding: Set by user. + * - decoding: unused + */ + int gop_size; + + /** + * Pixel format, see PIX_FMT_xxx. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + enum PixelFormat pix_fmt; + + /** + * Frame rate emulation. If not zero, the lower layer (i.e. format handler) + * has to read frames at native frame rate. + * - encoding: Set by user. + * - decoding: unused + */ + int rate_emu; + + /** + * If non NULL, 'draw_horiz_band' is called by the libavcodec + * decoder to draw a horizontal band. It improves cache usage. Not + * all codecs can do that. You must check the codec capabilities + * beforehand. + * The function is also used by hardware acceleration APIs. + * It is called at least once during frame decoding to pass + * the data needed for hardware render. + * In that mode instead of pixel data, AVFrame points to + * a structure specific to the acceleration API. The application + * reads the structure and can change some fields to indicate progress + * or mark state. + * - encoding: unused + * - decoding: Set by user. + * @param height the height of the slice + * @param y the y position of the slice + * @param type 1->top field, 2->bottom field, 3->frame + * @param offset offset into the AVFrame.data from which the slice should be read + */ + void (*draw_horiz_band)(struct AVCodecContext *s, + const AVFrame *src, int offset[4], + int y, int type, int height); + + /* audio only */ + int sample_rate; ///< samples per second + int channels; ///< number of audio channels + + /** + * audio sample format + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + enum SampleFormat sample_fmt; ///< sample format + + /* The following data should not be initialized. */ + /** + * Samples per packet, initialized when calling 'init'. + */ + int frame_size; + int frame_number; ///< audio or video frame number +#if LIBAVCODEC_VERSION_MAJOR < 53 + int real_pict_num; ///< Returns the real picture number of previous encoded frame. +#endif + + /** + * Number of frames the decoded output will be delayed relative to + * the encoded input. + * - encoding: Set by libavcodec. + * - decoding: unused + */ + int delay; + + /* - encoding parameters */ + float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0) + float qblur; ///< amount of qscale smoothing over time (0.0-1.0) + + /** + * minimum quantizer + * - encoding: Set by user. + * - decoding: unused + */ + int qmin; + + /** + * maximum quantizer + * - encoding: Set by user. + * - decoding: unused + */ + int qmax; + + /** + * maximum quantizer difference between frames + * - encoding: Set by user. + * - decoding: unused + */ + int max_qdiff; + + /** + * maximum number of B-frames between non-B-frames + * Note: The output will be delayed by max_b_frames+1 relative to the input. + * - encoding: Set by user. + * - decoding: unused + */ + int max_b_frames; + + /** + * qscale factor between IP and B-frames + * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). + * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). + * - encoding: Set by user. + * - decoding: unused + */ + float b_quant_factor; + + /** obsolete FIXME remove */ + int rc_strategy; +#define FF_RC_STRATEGY_XVID 1 + + int b_frame_strategy; + + /** + * hurry up amount + * - encoding: unused + * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header + * @deprecated Deprecated in favor of skip_idct and skip_frame. + */ + int hurry_up; + + struct AVCodec *codec; + + void *priv_data; + + int rtp_payload_size; /* The size of the RTP payload: the coder will */ + /* do its best to deliver a chunk with size */ + /* below rtp_payload_size, the chunk will start */ + /* with a start code on some codecs like H.263. */ + /* This doesn't take account of any particular */ + /* headers inside the transmitted RTP payload. */ + + + /* The RTP callback: This function is called */ + /* every time the encoder has a packet to send. */ + /* It depends on the encoder if the data starts */ + /* with a Start Code (it should). H.263 does. */ + /* mb_nb contains the number of macroblocks */ + /* encoded in the RTP payload. */ + void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); + + /* statistics, used for 2-pass encoding */ + int mv_bits; + int header_bits; + int i_tex_bits; + int p_tex_bits; + int i_count; + int p_count; + int skip_count; + int misc_bits; + + /** + * number of bits used for the previously encoded frame + * - encoding: Set by libavcodec. + * - decoding: unused + */ + int frame_bits; + + /** + * Private data of the user, can be used to carry app specific stuff. + * - encoding: Set by user. + * - decoding: Set by user. + */ + void *opaque; + + char codec_name[32]; + enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */ + enum CodecID codec_id; /* see CODEC_ID_xxx */ + + /** + * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). + * This is used to work around some encoder bugs. + * A demuxer should set this to what is stored in the field used to identify the codec. + * If there are multiple such fields in a container then the demuxer should choose the one + * which maximizes the information about the used codec. + * If the codec tag field in a container is larger then 32 bits then the demuxer should + * remap the longer ID to 32 bits with a table or other structure. Alternatively a new + * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated + * first. + * - encoding: Set by user, if not then the default based on codec_id will be used. + * - decoding: Set by user, will be converted to uppercase by libavcodec during init. + */ + unsigned int codec_tag; + + /** + * Work around bugs in encoders which sometimes cannot be detected automatically. + * - encoding: Set by user + * - decoding: Set by user + */ + int workaround_bugs; +#define FF_BUG_AUTODETECT 1 ///< autodetection +#define FF_BUG_OLD_MSMPEG4 2 +#define FF_BUG_XVID_ILACE 4 +#define FF_BUG_UMP4 8 +#define FF_BUG_NO_PADDING 16 +#define FF_BUG_AMV 32 +#define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default. +#define FF_BUG_QPEL_CHROMA 64 +#define FF_BUG_STD_QPEL 128 +#define FF_BUG_QPEL_CHROMA2 256 +#define FF_BUG_DIRECT_BLOCKSIZE 512 +#define FF_BUG_EDGE 1024 +#define FF_BUG_HPEL_CHROMA 2048 +#define FF_BUG_DC_CLIP 4096 +#define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders. +#define FF_BUG_TRUNCATED 16384 +//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%. + + /** + * luma single coefficient elimination threshold + * - encoding: Set by user. + * - decoding: unused + */ + int luma_elim_threshold; + + /** + * chroma single coeff elimination threshold + * - encoding: Set by user. + * - decoding: unused + */ + int chroma_elim_threshold; + + /** + * strictly follow the standard (MPEG4, ...). + * - encoding: Set by user. + * - decoding: Set by user. + * Setting this to STRICT or higher means the encoder and decoder will + * generally do stupid things. While setting it to inofficial or lower + * will mean the encoder might use things that are not supported by all + * spec compliant decoders. Decoders make no difference between normal, + * inofficial and experimental, that is they always try to decode things + * when they can unless they are explicitly asked to behave stupid + * (=strictly conform to the specs) + */ + int strict_std_compliance; +#define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to a older more strict version of the spec or reference software. +#define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences. +#define FF_COMPLIANCE_NORMAL 0 +#define FF_COMPLIANCE_INOFFICIAL -1 ///< Allow inofficial extensions. +#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things. + + /** + * qscale offset between IP and B-frames + * - encoding: Set by user. + * - decoding: unused + */ + float b_quant_offset; + + /** + * Error recognization; higher values will detect more errors but may + * misdetect some more or less valid parts as errors. + * - encoding: unused + * - decoding: Set by user. + */ + int error_recognition; +#define FF_ER_CAREFUL 1 +#define FF_ER_COMPLIANT 2 +#define FF_ER_AGGRESSIVE 3 +#define FF_ER_VERY_AGGRESSIVE 4 + + /** + * Called at the beginning of each frame to get a buffer for it. + * If pic.reference is set then the frame will be read later by libavcodec. + * avcodec_align_dimensions2() should be used to find the required width and + * height, as they normally need to be rounded up to the next multiple of 16. + * if CODEC_CAP_DR1 is not set then get_buffer() must call + * avcodec_default_get_buffer() instead of providing buffers allocated by + * some other means. + * - encoding: unused + * - decoding: Set by libavcodec., user can override. + */ + int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic); + + /** + * Called to release buffers which were allocated with get_buffer. + * A released buffer can be reused in get_buffer(). + * pic.data[*] must be set to NULL. + * - encoding: unused + * - decoding: Set by libavcodec., user can override. + */ + void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic); + + /** + * Size of the frame reordering buffer in the decoder. + * For MPEG-2 it is 1 IPB or 0 low delay IP. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + */ + int has_b_frames; + + /** + * number of bytes per packet if constant and known or 0 + * Used by some WAV based audio codecs. + */ + int block_align; + + int parse_only; /* - decoding only: If true, only parsing is done + (function avcodec_parse_frame()). The frame + data is returned. Only MPEG codecs support this now. */ + + /** + * 0-> h263 quant 1-> mpeg quant + * - encoding: Set by user. + * - decoding: unused + */ + int mpeg_quant; + + /** + * pass1 encoding statistics output buffer + * - encoding: Set by libavcodec. + * - decoding: unused + */ + char *stats_out; + + /** + * pass2 encoding statistics input buffer + * Concatenated stuff from stats_out of pass1 should be placed here. + * - encoding: Allocated/set/freed by user. + * - decoding: unused + */ + char *stats_in; + + /** + * ratecontrol qmin qmax limiting method + * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax. + * - encoding: Set by user. + * - decoding: unused + */ + float rc_qsquish; + + float rc_qmod_amp; + int rc_qmod_freq; + + /** + * ratecontrol override, see RcOverride + * - encoding: Allocated/set/freed by user. + * - decoding: unused + */ + RcOverride *rc_override; + int rc_override_count; + + /** + * rate control equation + * - encoding: Set by user + * - decoding: unused + */ + const char *rc_eq; + + /** + * maximum bitrate + * - encoding: Set by user. + * - decoding: unused + */ + int rc_max_rate; + + /** + * minimum bitrate + * - encoding: Set by user. + * - decoding: unused + */ + int rc_min_rate; + + /** + * decoder bitstream buffer size + * - encoding: Set by user. + * - decoding: unused + */ + int rc_buffer_size; + float rc_buffer_aggressivity; + + /** + * qscale factor between P and I-frames + * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset). + * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). + * - encoding: Set by user. + * - decoding: unused + */ + float i_quant_factor; + + /** + * qscale offset between P and I-frames + * - encoding: Set by user. + * - decoding: unused + */ + float i_quant_offset; + + /** + * initial complexity for pass1 ratecontrol + * - encoding: Set by user. + * - decoding: unused + */ + float rc_initial_cplx; + + /** + * DCT algorithm, see FF_DCT_* below + * - encoding: Set by user. + * - decoding: unused + */ + int dct_algo; +#define FF_DCT_AUTO 0 +#define FF_DCT_FASTINT 1 +#define FF_DCT_INT 2 +#define FF_DCT_MMX 3 +#define FF_DCT_MLIB 4 +#define FF_DCT_ALTIVEC 5 +#define FF_DCT_FAAN 6 + + /** + * luminance masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + */ + float lumi_masking; + + /** + * temporary complexity masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + */ + float temporal_cplx_masking; + + /** + * spatial complexity masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + */ + float spatial_cplx_masking; + + /** + * p block masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + */ + float p_masking; + + /** + * darkness masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + */ + float dark_masking; + + /** + * IDCT algorithm, see FF_IDCT_* below. + * - encoding: Set by user. + * - decoding: Set by user. + */ + int idct_algo; +#define FF_IDCT_AUTO 0 +#define FF_IDCT_INT 1 +#define FF_IDCT_SIMPLE 2 +#define FF_IDCT_SIMPLEMMX 3 +#define FF_IDCT_LIBMPEG2MMX 4 +#define FF_IDCT_PS2 5 +#define FF_IDCT_MLIB 6 +#define FF_IDCT_ARM 7 +#define FF_IDCT_ALTIVEC 8 +#define FF_IDCT_SH4 9 +#define FF_IDCT_SIMPLEARM 10 +#define FF_IDCT_H264 11 +#define FF_IDCT_VP3 12 +#define FF_IDCT_IPP 13 +#define FF_IDCT_XVIDMMX 14 +#define FF_IDCT_CAVS 15 +#define FF_IDCT_SIMPLEARMV5TE 16 +#define FF_IDCT_SIMPLEARMV6 17 +#define FF_IDCT_SIMPLEVIS 18 +#define FF_IDCT_WMV2 19 +#define FF_IDCT_FAAN 20 +#define FF_IDCT_EA 21 +#define FF_IDCT_SIMPLENEON 22 +#define FF_IDCT_SIMPLEALPHA 23 +#define FF_IDCT_BINK 24 + + /** + * slice count + * - encoding: Set by libavcodec. + * - decoding: Set by user (or 0). + */ + int slice_count; + /** + * slice offsets in the frame in bytes + * - encoding: Set/allocated by libavcodec. + * - decoding: Set/allocated by user (or NULL). + */ + int *slice_offset; + + /** + * error concealment flags + * - encoding: unused + * - decoding: Set by user. + */ + int error_concealment; +#define FF_EC_GUESS_MVS 1 +#define FF_EC_DEBLOCK 2 + + /** + * dsp_mask could be add used to disable unwanted CPU features + * CPU features (i.e. MMX, SSE. ...) + * + * With the FORCE flag you may instead enable given CPU features. + * (Dangerous: Usable in case of misdetection, improper usage however will + * result into program crash.) + */ + unsigned dsp_mask; +#define FF_MM_FORCE 0x80000000 /* Force usage of selected flags (OR) */ + /* lower 16 bits - CPU features */ +#define FF_MM_MMX 0x0001 ///< standard MMX +#define FF_MM_3DNOW 0x0004 ///< AMD 3DNOW +#if LIBAVCODEC_VERSION_MAJOR < 53 +#define FF_MM_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext +#endif +#define FF_MM_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext +#define FF_MM_SSE 0x0008 ///< SSE functions +#define FF_MM_SSE2 0x0010 ///< PIV SSE2 functions +#define FF_MM_3DNOWEXT 0x0020 ///< AMD 3DNowExt +#define FF_MM_SSE3 0x0040 ///< Prescott SSE3 functions +#define FF_MM_SSSE3 0x0080 ///< Conroe SSSE3 functions +#define FF_MM_SSE4 0x0100 ///< Penryn SSE4.1 functions +#define FF_MM_SSE42 0x0200 ///< Nehalem SSE4.2 functions +#define FF_MM_IWMMXT 0x0100 ///< XScale IWMMXT +#define FF_MM_ALTIVEC 0x0001 ///< standard AltiVec + + /** + * bits per sample/pixel from the demuxer (needed for huffyuv). + * - encoding: Set by libavcodec. + * - decoding: Set by user. + */ + int bits_per_coded_sample; + + /** + * prediction method (needed for huffyuv) + * - encoding: Set by user. + * - decoding: unused + */ + int prediction_method; +#define FF_PRED_LEFT 0 +#define FF_PRED_PLANE 1 +#define FF_PRED_MEDIAN 2 + + /** + * sample aspect ratio (0 if unknown) + * That is the width of a pixel divided by the height of the pixel. + * Numerator and denominator must be relatively prime and smaller than 256 for some video standards. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + AVRational sample_aspect_ratio; + + /** + * the picture in the bitstream + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + */ + AVFrame *coded_frame; + + /** + * debug + * - encoding: Set by user. + * - decoding: Set by user. + */ + int debug; +#define FF_DEBUG_PICT_INFO 1 +#define FF_DEBUG_RC 2 +#define FF_DEBUG_BITSTREAM 4 +#define FF_DEBUG_MB_TYPE 8 +#define FF_DEBUG_QP 16 +#define FF_DEBUG_MV 32 +#define FF_DEBUG_DCT_COEFF 0x00000040 +#define FF_DEBUG_SKIP 0x00000080 +#define FF_DEBUG_STARTCODE 0x00000100 +#define FF_DEBUG_PTS 0x00000200 +#define FF_DEBUG_ER 0x00000400 +#define FF_DEBUG_MMCO 0x00000800 +#define FF_DEBUG_BUGS 0x00001000 +#define FF_DEBUG_VIS_QP 0x00002000 +#define FF_DEBUG_VIS_MB_TYPE 0x00004000 +#define FF_DEBUG_BUFFERS 0x00008000 + + /** + * debug + * - encoding: Set by user. + * - decoding: Set by user. + */ + int debug_mv; +#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames +#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames +#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames + + /** + * error + * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR. + * - decoding: unused + */ + uint64_t error[4]; + + /** + * minimum MB quantizer + * - encoding: unused + * - decoding: unused + */ + int mb_qmin; + + /** + * maximum MB quantizer + * - encoding: unused + * - decoding: unused + */ + int mb_qmax; + + /** + * motion estimation comparison function + * - encoding: Set by user. + * - decoding: unused + */ + int me_cmp; + /** + * subpixel motion estimation comparison function + * - encoding: Set by user. + * - decoding: unused + */ + int me_sub_cmp; + /** + * macroblock comparison function (not supported yet) + * - encoding: Set by user. + * - decoding: unused + */ + int mb_cmp; + /** + * interlaced DCT comparison function + * - encoding: Set by user. + * - decoding: unused + */ + int ildct_cmp; +#define FF_CMP_SAD 0 +#define FF_CMP_SSE 1 +#define FF_CMP_SATD 2 +#define FF_CMP_DCT 3 +#define FF_CMP_PSNR 4 +#define FF_CMP_BIT 5 +#define FF_CMP_RD 6 +#define FF_CMP_ZERO 7 +#define FF_CMP_VSAD 8 +#define FF_CMP_VSSE 9 +#define FF_CMP_NSSE 10 +#define FF_CMP_W53 11 +#define FF_CMP_W97 12 +#define FF_CMP_DCTMAX 13 +#define FF_CMP_DCT264 14 +#define FF_CMP_CHROMA 256 + + /** + * ME diamond size & shape + * - encoding: Set by user. + * - decoding: unused + */ + int dia_size; + + /** + * amount of previous MV predictors (2a+1 x 2a+1 square) + * - encoding: Set by user. + * - decoding: unused + */ + int last_predictor_count; + + /** + * prepass for motion estimation + * - encoding: Set by user. + * - decoding: unused + */ + int pre_me; + + /** + * motion estimation prepass comparison function + * - encoding: Set by user. + * - decoding: unused + */ + int me_pre_cmp; + + /** + * ME prepass diamond size & shape + * - encoding: Set by user. + * - decoding: unused + */ + int pre_dia_size; + + /** + * subpel ME quality + * - encoding: Set by user. + * - decoding: unused + */ + int me_subpel_quality; + + /** + * callback to negotiate the pixelFormat + * @param fmt is the list of formats which are supported by the codec, + * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. + * The first is always the native one. + * @return the chosen format + * - encoding: unused + * - decoding: Set by user, if not set the native format will be chosen. + */ + enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt); + + /** + * DTG active format information (additional aspect ratio + * information only used in DVB MPEG-2 transport streams) + * 0 if not set. + * + * - encoding: unused + * - decoding: Set by decoder. + */ + int dtg_active_format; +#define FF_DTG_AFD_SAME 8 +#define FF_DTG_AFD_4_3 9 +#define FF_DTG_AFD_16_9 10 +#define FF_DTG_AFD_14_9 11 +#define FF_DTG_AFD_4_3_SP_14_9 13 +#define FF_DTG_AFD_16_9_SP_14_9 14 +#define FF_DTG_AFD_SP_4_3 15 + + /** + * maximum motion estimation search range in subpel units + * If 0 then no limit. + * + * - encoding: Set by user. + * - decoding: unused + */ + int me_range; + + /** + * intra quantizer bias + * - encoding: Set by user. + * - decoding: unused + */ + int intra_quant_bias; +#define FF_DEFAULT_QUANT_BIAS 999999 + + /** + * inter quantizer bias + * - encoding: Set by user. + * - decoding: unused + */ + int inter_quant_bias; + + /** + * color table ID + * - encoding: unused + * - decoding: Which clrtable should be used for 8bit RGB images. + * Tables have to be stored somewhere. FIXME + */ + int color_table_id; + + /** + * internal_buffer count + * Don't touch, used by libavcodec default_get_buffer(). + */ + int internal_buffer_count; + + /** + * internal_buffers + * Don't touch, used by libavcodec default_get_buffer(). + */ + void *internal_buffer; + +#define FF_LAMBDA_SHIFT 7 +#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT) +#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda +#define FF_LAMBDA_MAX (256*128-1) + +#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove + /** + * Global quality for codecs which cannot change it per frame. + * This should be proportional to MPEG-1/2/4 qscale. + * - encoding: Set by user. + * - decoding: unused + */ + int global_quality; + +#define FF_CODER_TYPE_VLC 0 +#define FF_CODER_TYPE_AC 1 +#define FF_CODER_TYPE_RAW 2 +#define FF_CODER_TYPE_RLE 3 +#define FF_CODER_TYPE_DEFLATE 4 + /** + * coder type + * - encoding: Set by user. + * - decoding: unused + */ + int coder_type; + + /** + * context model + * - encoding: Set by user. + * - decoding: unused + */ + int context_model; +#if 0 + /** + * + * - encoding: unused + * - decoding: Set by user. + */ + uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size); +#endif + + /** + * slice flags + * - encoding: unused + * - decoding: Set by user. + */ + int slice_flags; +#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display +#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics) +#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1) + + /** + * XVideo Motion Acceleration + * - encoding: forbidden + * - decoding: set by decoder + */ + int xvmc_acceleration; + + /** + * macroblock decision mode + * - encoding: Set by user. + * - decoding: unused + */ + int mb_decision; +#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp +#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits +#define FF_MB_DECISION_RD 2 ///< rate distortion + + /** + * custom intra quantization matrix + * - encoding: Set by user, can be NULL. + * - decoding: Set by libavcodec. + */ + uint16_t *intra_matrix; + + /** + * custom inter quantization matrix + * - encoding: Set by user, can be NULL. + * - decoding: Set by libavcodec. + */ + uint16_t *inter_matrix; + + /** + * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). + * This is used to work around some encoder bugs. + * - encoding: unused + * - decoding: Set by user, will be converted to uppercase by libavcodec during init. + */ + unsigned int stream_codec_tag; + + /** + * scene change detection threshold + * 0 is default, larger means fewer detected scene changes. + * - encoding: Set by user. + * - decoding: unused + */ + int scenechange_threshold; + + /** + * minimum Lagrange multipler + * - encoding: Set by user. + * - decoding: unused + */ + int lmin; + + /** + * maximum Lagrange multipler + * - encoding: Set by user. + * - decoding: unused + */ + int lmax; + + /** + * palette control structure + * - encoding: ??? (no palette-enabled encoder yet) + * - decoding: Set by user. + */ + struct AVPaletteControl *palctrl; + + /** + * noise reduction strength + * - encoding: Set by user. + * - decoding: unused + */ + int noise_reduction; + + /** + * Called at the beginning of a frame to get cr buffer for it. + * Buffer type (size, hints) must be the same. libavcodec won't check it. + * libavcodec will pass previous buffer in pic, function should return + * same buffer or new buffer with old frame "painted" into it. + * If pic.data[0] == NULL must behave like get_buffer(). + * if CODEC_CAP_DR1 is not set then reget_buffer() must call + * avcodec_default_reget_buffer() instead of providing buffers allocated by + * some other means. + * - encoding: unused + * - decoding: Set by libavcodec., user can override + */ + int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic); + + /** + * Number of bits which should be loaded into the rc buffer before decoding starts. + * - encoding: Set by user. + * - decoding: unused + */ + int rc_initial_buffer_occupancy; + + /** + * + * - encoding: Set by user. + * - decoding: unused + */ + int inter_threshold; + + /** + * CODEC_FLAG2_* + * - encoding: Set by user. + * - decoding: Set by user. + */ + int flags2; + + /** + * Simulates errors in the bitstream to test error concealment. + * - encoding: Set by user. + * - decoding: unused + */ + int error_rate; + + /** + * MP3 antialias algorithm, see FF_AA_* below. + * - encoding: unused + * - decoding: Set by user. + */ + int antialias_algo; +#define FF_AA_AUTO 0 +#define FF_AA_FASTINT 1 //not implemented yet +#define FF_AA_INT 2 +#define FF_AA_FLOAT 3 + /** + * quantizer noise shaping + * - encoding: Set by user. + * - decoding: unused + */ + int quantizer_noise_shaping; + + /** + * thread count + * is used to decide how many independent tasks should be passed to execute() + * - encoding: Set by user. + * - decoding: Set by user. + */ + int thread_count; + + /** + * The codec may call this to execute several independent things. + * It will return only after finishing all tasks. + * The user may replace this with some multithreaded implementation, + * the default implementation will execute the parts serially. + * @param count the number of things to execute + * - encoding: Set by libavcodec, user can override. + * - decoding: Set by libavcodec, user can override. + */ + int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size); + + /** + * thread opaque + * Can be used by execute() to store some per AVCodecContext stuff. + * - encoding: set by execute() + * - decoding: set by execute() + */ + void *thread_opaque; + + /** + * Motion estimation threshold below which no motion estimation is + * performed, but instead the user specified motion vectors are used. + * + * - encoding: Set by user. + * - decoding: unused + */ + int me_threshold; + + /** + * Macroblock threshold below which the user specified macroblock types will be used. + * - encoding: Set by user. + * - decoding: unused + */ + int mb_threshold; + + /** + * precision of the intra DC coefficient - 8 + * - encoding: Set by user. + * - decoding: unused + */ + int intra_dc_precision; + + /** + * noise vs. sse weight for the nsse comparsion function + * - encoding: Set by user. + * - decoding: unused + */ + int nsse_weight; + + /** + * Number of macroblock rows at the top which are skipped. + * - encoding: unused + * - decoding: Set by user. + */ + int skip_top; + + /** + * Number of macroblock rows at the bottom which are skipped. + * - encoding: unused + * - decoding: Set by user. + */ + int skip_bottom; + + /** + * profile + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + int profile; +#define FF_PROFILE_UNKNOWN -99 + +#define FF_PROFILE_AAC_MAIN 0 +#define FF_PROFILE_AAC_LOW 1 +#define FF_PROFILE_AAC_SSR 2 +#define FF_PROFILE_AAC_LTP 3 + +#define FF_PROFILE_H264_BASELINE 66 +#define FF_PROFILE_H264_MAIN 77 +#define FF_PROFILE_H264_EXTENDED 88 +#define FF_PROFILE_H264_HIGH 100 +#define FF_PROFILE_H264_HIGH_10 110 +#define FF_PROFILE_H264_HIGH_422 122 +#define FF_PROFILE_H264_HIGH_444 244 +#define FF_PROFILE_H264_CAVLC_444 44 + + /** + * level + * - encoding: Set by user. + * - decoding: Set by libavcodec. + */ + int level; +#define FF_LEVEL_UNKNOWN -99 + + /** + * low resolution decoding, 1-> 1/2 size, 2->1/4 size + * - encoding: unused + * - decoding: Set by user. + */ + int lowres; + + /** + * Bitstream width / height, may be different from width/height if lowres + * or other things are used. + * - encoding: unused + * - decoding: Set by user before init if known. Codec should override / dynamically change if needed. + */ + int coded_width, coded_height; + + /** + * frame skip threshold + * - encoding: Set by user. + * - decoding: unused + */ + int frame_skip_threshold; + + /** + * frame skip factor + * - encoding: Set by user. + * - decoding: unused + */ + int frame_skip_factor; + + /** + * frame skip exponent + * - encoding: Set by user. + * - decoding: unused + */ + int frame_skip_exp; + + /** + * frame skip comparison function + * - encoding: Set by user. + * - decoding: unused + */ + int frame_skip_cmp; + + /** + * Border processing masking, raises the quantizer for mbs on the borders + * of the picture. + * - encoding: Set by user. + * - decoding: unused + */ + float border_masking; + + /** + * minimum MB lagrange multipler + * - encoding: Set by user. + * - decoding: unused + */ + int mb_lmin; + + /** + * maximum MB lagrange multipler + * - encoding: Set by user. + * - decoding: unused + */ + int mb_lmax; + + /** + * + * - encoding: Set by user. + * - decoding: unused + */ + int me_penalty_compensation; + + /** + * + * - encoding: unused + * - decoding: Set by user. + */ + enum AVDiscard skip_loop_filter; + + /** + * + * - encoding: unused + * - decoding: Set by user. + */ + enum AVDiscard skip_idct; + + /** + * + * - encoding: unused + * - decoding: Set by user. + */ + enum AVDiscard skip_frame; + + /** + * + * - encoding: Set by user. + * - decoding: unused + */ + int bidir_refine; + + /** + * + * - encoding: Set by user. + * - decoding: unused + */ + int brd_scale; + + /** + * constant rate factor - quality-based VBR - values ~correspond to qps + * - encoding: Set by user. + * - decoding: unused + */ + float crf; + + /** + * constant quantization parameter rate control method + * - encoding: Set by user. + * - decoding: unused + */ + int cqp; + + /** + * minimum GOP size + * - encoding: Set by user. + * - decoding: unused + */ + int keyint_min; + + /** + * number of reference frames + * - encoding: Set by user. + * - decoding: Set by lavc. + */ + int refs; + + /** + * chroma qp offset from luma + * - encoding: Set by user. + * - decoding: unused + */ + int chromaoffset; + + /** + * Influences how often B-frames are used. + * - encoding: Set by user. + * - decoding: unused + */ + int bframebias; + + /** + * trellis RD quantization + * - encoding: Set by user. + * - decoding: unused + */ + int trellis; + + /** + * Reduce fluctuations in qp (before curve compression). + * - encoding: Set by user. + * - decoding: unused + */ + float complexityblur; + + /** + * in-loop deblocking filter alphac0 parameter + * alpha is in the range -6...6 + * - encoding: Set by user. + * - decoding: unused + */ + int deblockalpha; + + /** + * in-loop deblocking filter beta parameter + * beta is in the range -6...6 + * - encoding: Set by user. + * - decoding: unused + */ + int deblockbeta; + + /** + * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4 + * - encoding: Set by user. + * - decoding: unused + */ + int partitions; +#define X264_PART_I4X4 0x001 /* Analyze i4x4 */ +#define X264_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ +#define X264_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ +#define X264_PART_P4X4 0x020 /* Analyze p8x4, p4x8, p4x4 */ +#define X264_PART_B8X8 0x100 /* Analyze b16x8, b8x16 and b8x8 */ + + /** + * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto) + * - encoding: Set by user. + * - decoding: unused + */ + int directpred; + + /** + * Audio cutoff bandwidth (0 means "automatic") + * - encoding: Set by user. + * - decoding: unused + */ + int cutoff; + + /** + * Multiplied by qscale for each frame and added to scene_change_score. + * - encoding: Set by user. + * - decoding: unused + */ + int scenechange_factor; + + /** + * + * Note: Value depends upon the compare function used for fullpel ME. + * - encoding: Set by user. + * - decoding: unused + */ + int mv0_threshold; + + /** + * Adjusts sensitivity of b_frame_strategy 1. + * - encoding: Set by user. + * - decoding: unused + */ + int b_sensitivity; + + /** + * - encoding: Set by user. + * - decoding: unused + */ + int compression_level; +#define FF_COMPRESSION_DEFAULT -1 + + /** + * Sets whether to use LPC mode - used by FLAC encoder. + * - encoding: Set by user. + * - decoding: unused + */ + int use_lpc; + + /** + * LPC coefficient precision - used by FLAC encoder + * - encoding: Set by user. + * - decoding: unused + */ + int lpc_coeff_precision; + + /** + * - encoding: Set by user. + * - decoding: unused + */ + int min_prediction_order; + + /** + * - encoding: Set by user. + * - decoding: unused + */ + int max_prediction_order; + + /** + * search method for selecting prediction order + * - encoding: Set by user. + * - decoding: unused + */ + int prediction_order_method; + + /** + * - encoding: Set by user. + * - decoding: unused + */ + int min_partition_order; + + /** + * - encoding: Set by user. + * - decoding: unused + */ + int max_partition_order; + + /** + * GOP timecode frame start number, in non drop frame format + * - encoding: Set by user. + * - decoding: unused + */ + int64_t timecode_frame_start; + +#if LIBAVCODEC_VERSION_MAJOR < 53 + /** + * Decoder should decode to this many channels if it can (0 for default) + * - encoding: unused + * - decoding: Set by user. + * @deprecated Deprecated in favor of request_channel_layout. + */ + int request_channels; +#endif + + /** + * Percentage of dynamic range compression to be applied by the decoder. + * The default value is 1.0, corresponding to full compression. + * - encoding: unused + * - decoding: Set by user. + */ + float drc_scale; + + /** + * opaque 64bit number (generally a PTS) that will be reordered and + * output in AVFrame.reordered_opaque + * - encoding: unused + * - decoding: Set by user. + */ + int64_t reordered_opaque; + + /** + * Bits per sample/pixel of internal libavcodec pixel/sample format. + * This field is applicable only when sample_fmt is SAMPLE_FMT_S32. + * - encoding: set by user. + * - decoding: set by libavcodec. + */ + int bits_per_raw_sample; + + /** + * Audio channel layout. + * - encoding: set by user. + * - decoding: set by libavcodec. + */ + int64_t channel_layout; + + /** + * Request decoder to use this channel layout if it can (0 for default) + * - encoding: unused + * - decoding: Set by user. + */ + int64_t request_channel_layout; + + /** + * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow. + * - encoding: Set by user. + * - decoding: unused. + */ + float rc_max_available_vbv_use; + + /** + * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow. + * - encoding: Set by user. + * - decoding: unused. + */ + float rc_min_vbv_overflow_use; + + /** + * Hardware accelerator in use + * - encoding: unused. + * - decoding: Set by libavcodec + */ + struct AVHWAccel *hwaccel; + + /** + * For some codecs, the time base is closer to the field rate than the frame rate. + * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration + * if no telecine is used ... + * + * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2. + */ + int ticks_per_frame; + + /** + * Hardware accelerator context. + * For some hardware accelerators, a global context needs to be + * provided by the user. In that case, this holds display-dependent + * data FFmpeg cannot instantiate itself. Please refer to the + * FFmpeg HW accelerator documentation to know how to fill this + * is. e.g. for VA API, this is a struct vaapi_context. + * - encoding: unused + * - decoding: Set by user + */ + void *hwaccel_context; + + /** + * Chromaticity coordinates of the source primaries. + * - encoding: Set by user + * - decoding: Set by libavcodec + */ + enum AVColorPrimaries color_primaries; + + /** + * Color Transfer Characteristic. + * - encoding: Set by user + * - decoding: Set by libavcodec + */ + enum AVColorTransferCharacteristic color_trc; + + /** + * YUV colorspace type. + * - encoding: Set by user + * - decoding: Set by libavcodec + */ + enum AVColorSpace colorspace; + + /** + * MPEG vs JPEG YUV range. + * - encoding: Set by user + * - decoding: Set by libavcodec + */ + enum AVColorRange color_range; + + /** + * This defines the location of chroma samples. + * - encoding: Set by user + * - decoding: Set by libavcodec + */ + enum AVChromaLocation chroma_sample_location; + + /** + * The codec may call this to execute several independent things. + * It will return only after finishing all tasks. + * The user may replace this with some multithreaded implementation, + * the default implementation will execute the parts serially. + * Also see avcodec_thread_init and e.g. the --enable-pthread configure option. + * @param c context passed also to func + * @param count the number of things to execute + * @param arg2 argument passed unchanged to func + * @param ret return values of executed functions, must have space for "count" values. May be NULL. + * @param func function that will be called count times, with jobnr from 0 to count-1. + * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no + * two instances of func executing at the same time will have the same threadnr. + * @return always 0 currently, but code should handle a future improvement where when any call to func + * returns < 0 no further calls to func may be done and < 0 is returned. + * - encoding: Set by libavcodec, user can override. + * - decoding: Set by libavcodec, user can override. + */ + int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count); + + /** + * explicit P-frame weighted prediction analysis method + * 0: off + * 1: fast blind weighting (one reference duplicate with -1 offset) + * 2: smart weighting (full fade detection analysis) + * - encoding: Set by user. + * - decoding: unused + */ + int weighted_p_pred; + + /** + * AQ mode + * 0: Disabled + * 1: Variance AQ (complexity mask) + * 2: Auto-variance AQ (experimental) + * - encoding: Set by user + * - decoding: unused + */ + int aq_mode; + + /** + * AQ strength + * Reduces blocking and blurring in flat and textured areas. + * - encoding: Set by user + * - decoding: unused + */ + float aq_strength; + + /** + * PSY RD + * Strength of psychovisual optimization + * - encoding: Set by user + * - decoding: unused + */ + float psy_rd; + + /** + * PSY trellis + * Strength of psychovisual optimization + * - encoding: Set by user + * - decoding: unused + */ + float psy_trellis; + + /** + * RC lookahead + * Number of frames for frametype and ratecontrol lookahead + * - encoding: Set by user + * - decoding: unused + */ + int rc_lookahead; +} AVCodecContext; + +/** + * AVCodec. + */ +typedef struct AVCodec { + /** + * Name of the codec implementation. + * The name is globally unique among encoders and among decoders (but an + * encoder and a decoder can share the same name). + * This is the primary way to find a codec from the user perspective. + */ + const char *name; + enum AVMediaType type; + enum CodecID id; + int priv_data_size; + int (*init)(AVCodecContext *); + int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data); + int (*close)(AVCodecContext *); + int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt); + /** + * Codec capabilities. + * see CODEC_CAP_* + */ + int capabilities; + struct AVCodec *next; + /** + * Flush buffers. + * Will be called when seeking + */ + void (*flush)(AVCodecContext *); + const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0} + const enum PixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1 + /** + * Descriptive name for the codec, meant to be more human readable than name. + * You should use the NULL_IF_CONFIG_SMALL() macro to define it. + */ + const char *long_name; + const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 + const enum SampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 + const int64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 +} AVCodec; + +/** + * AVHWAccel. + */ +typedef struct AVHWAccel { + /** + * Name of the hardware accelerated codec. + * The name is globally unique among encoders and among decoders (but an + * encoder and a decoder can share the same name). + */ + const char *name; + + /** + * Type of codec implemented by the hardware accelerator. + * + * See AVMEDIA_TYPE_xxx + */ + enum AVMediaType type; + + /** + * Codec implemented by the hardware accelerator. + * + * See CODEC_ID_xxx + */ + enum CodecID id; + + /** + * Supported pixel format. + * + * Only hardware accelerated formats are supported here. + */ + enum PixelFormat pix_fmt; + + /** + * Hardware accelerated codec capabilities. + * see FF_HWACCEL_CODEC_CAP_* + */ + int capabilities; + + struct AVHWAccel *next; + + /** + * Called at the beginning of each frame or field picture. + * + * Meaningful frame information (codec specific) is guaranteed to + * be parsed at this point. This function is mandatory. + * + * Note that buf can be NULL along with buf_size set to 0. + * Otherwise, this means the whole frame is available at this point. + * + * @param avctx the codec context + * @param buf the frame data buffer base + * @param buf_size the size of the frame in bytes + * @return zero if successful, a negative value otherwise + */ + int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); + + /** + * Callback for each slice. + * + * Meaningful slice information (codec specific) is guaranteed to + * be parsed at this point. This function is mandatory. + * + * @param avctx the codec context + * @param buf the slice data buffer base + * @param buf_size the size of the slice in bytes + * @return zero if successful, a negative value otherwise + */ + int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); + + /** + * Called at the end of each frame or field picture. + * + * The whole picture is parsed at this point and can now be sent + * to the hardware accelerator. This function is mandatory. + * + * @param avctx the codec context + * @return zero if successful, a negative value otherwise + */ + int (*end_frame)(AVCodecContext *avctx); + + /** + * Size of HW accelerator private data. + * + * Private data is allocated with av_mallocz() before + * AVCodecContext.get_buffer() and deallocated after + * AVCodecContext.release_buffer(). + */ + int priv_data_size; +} AVHWAccel; + +/** + * four components are given, that's all. + * the last component is alpha + */ +typedef struct AVPicture { + uint8_t *data[4]; + int linesize[4]; ///< number of bytes per line +} AVPicture; + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/** + * AVPaletteControl + * This structure defines a method for communicating palette changes + * between and demuxer and a decoder. + * + * @deprecated Use AVPacket to send palette changes instead. + * This is totally broken. + */ +#define AVPALETTE_SIZE 1024 +#define AVPALETTE_COUNT 256 +typedef struct AVPaletteControl { + + /* Demuxer sets this to 1 to indicate the palette has changed; + * decoder resets to 0. */ + int palette_changed; + + /* 4-byte ARGB palette entries, stored in native byte order; note that + * the individual palette components should be on a 8-bit scale; if + * the palette data comes from an IBM VGA native format, the component + * data is probably 6 bits in size and needs to be scaled. */ + unsigned int palette[AVPALETTE_COUNT]; + +} AVPaletteControl attribute_deprecated; +#endif + +enum AVSubtitleType { + SUBTITLE_NONE, + + SUBTITLE_BITMAP, ///< A bitmap, pict will be set + + /** + * Plain text, the text field must be set by the decoder and is + * authoritative. ass and pict fields may contain approximations. + */ + SUBTITLE_TEXT, + + /** + * Formatted text, the ass field must be set by the decoder and is + * authoritative. pict and text fields may contain approximations. + */ + SUBTITLE_ASS, +}; + +typedef struct AVSubtitleRect { + int x; ///< top left corner of pict, undefined when pict is not set + int y; ///< top left corner of pict, undefined when pict is not set + int w; ///< width of pict, undefined when pict is not set + int h; ///< height of pict, undefined when pict is not set + int nb_colors; ///< number of colors in pict, undefined when pict is not set + + /** + * data+linesize for the bitmap of this subtitle. + * can be set for text/ass as well once they where rendered + */ + AVPicture pict; + enum AVSubtitleType type; + + char *text; ///< 0 terminated plain UTF-8 text + + /** + * 0 terminated ASS/SSA compatible event line. + * The pressentation of this is unaffected by the other values in this + * struct. + */ + char *ass; +} AVSubtitleRect; + +typedef struct AVSubtitle { + uint16_t format; /* 0 = graphics */ + uint32_t start_display_time; /* relative to packet pts, in ms */ + uint32_t end_display_time; /* relative to packet pts, in ms */ + unsigned num_rects; + AVSubtitleRect **rects; + int64_t pts; ///< Same as packet pts, in AV_TIME_BASE +} AVSubtitle; + +/* packet functions */ + +/** + * @deprecated use NULL instead + */ +attribute_deprecated void av_destruct_packet_nofree(AVPacket *pkt); + +/** + * Default packet destructor. + */ +void av_destruct_packet(AVPacket *pkt); + +/** + * Initialize optional fields of a packet with default values. + * + * @param pkt packet + */ +void av_init_packet(AVPacket *pkt); + +/** + * Allocate the payload of a packet and initialize its fields with + * default values. + * + * @param pkt packet + * @param size wanted payload size + * @return 0 if OK, AVERROR_xxx otherwise + */ +int av_new_packet(AVPacket *pkt, int size); + +/** + * Reduce packet size, correctly zeroing padding + * + * @param pkt packet + * @param size new size + */ +void av_shrink_packet(AVPacket *pkt, int size); + +/** + * @warning This is a hack - the packet memory allocation stuff is broken. The + * packet is allocated if it was not really allocated. + */ +int av_dup_packet(AVPacket *pkt); + +/** + * Free a packet. + * + * @param pkt packet to free + */ +void av_free_packet(AVPacket *pkt); + +/* resample.c */ + +struct ReSampleContext; +struct AVResampleContext; + +typedef struct ReSampleContext ReSampleContext; + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/** + * @deprecated Use av_audio_resample_init() instead. + */ +attribute_deprecated ReSampleContext *audio_resample_init(int output_channels, int input_channels, + int output_rate, int input_rate); +#endif +/** + * Initializes audio resampling context + * + * @param output_channels number of output channels + * @param input_channels number of input channels + * @param output_rate output sample rate + * @param input_rate input sample rate + * @param sample_fmt_out requested output sample format + * @param sample_fmt_in input sample format + * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq + * @param log2_phase_count log2 of the number of entries in the polyphase filterbank + * @param linear If 1 then the used FIR filter will be linearly interpolated + between the 2 closest, if 0 the closest will be used + * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate + * @return allocated ReSampleContext, NULL if error occured + */ +ReSampleContext *av_audio_resample_init(int output_channels, int input_channels, + int output_rate, int input_rate, + enum SampleFormat sample_fmt_out, + enum SampleFormat sample_fmt_in, + int filter_length, int log2_phase_count, + int linear, double cutoff); + +int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples); +void audio_resample_close(ReSampleContext *s); + + +/** + * Initializes an audio resampler. + * Note, if either rate is not an integer then simply scale both rates up so they are. + * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq + * @param log2_phase_count log2 of the number of entries in the polyphase filterbank + * @param linear If 1 then the used FIR filter will be linearly interpolated + between the 2 closest, if 0 the closest will be used + * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate + */ +struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff); + +/** + * resamples. + * @param src an array of unconsumed samples + * @param consumed the number of samples of src which have been consumed are returned here + * @param src_size the number of unconsumed samples available + * @param dst_size the amount of space in samples available in dst + * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context. + * @return the number of samples written in dst or -1 if an error occurred + */ +int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx); + + +/** + * Compensates samplerate/timestamp drift. The compensation is done by changing + * the resampler parameters, so no audible clicks or similar distortions occur + * @param compensation_distance distance in output samples over which the compensation should be performed + * @param sample_delta number of output samples which should be output less + * + * example: av_resample_compensate(c, 10, 500) + * here instead of 510 samples only 500 samples would be output + * + * note, due to rounding the actual compensation might be slightly different, + * especially if the compensation_distance is large and the in_rate used during init is small + */ +void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance); +void av_resample_close(struct AVResampleContext *c); + +/** + * Allocate memory for a picture. Call avpicture_free to free it. + * + * @param picture the picture to be filled in + * @param pix_fmt the format of the picture + * @param width the width of the picture + * @param height the height of the picture + * @return zero if successful, a negative value if not + */ +int avpicture_alloc(AVPicture *picture, enum PixelFormat pix_fmt, int width, int height); + +/** + * Free a picture previously allocated by avpicture_alloc(). + * + * @param picture the AVPicture to be freed + */ +void avpicture_free(AVPicture *picture); + +/** + * Fill in the AVPicture fields. + * The fields of the given AVPicture are filled in by using the 'ptr' address + * which points to the image data buffer. Depending on the specified picture + * format, one or multiple image data pointers and line sizes will be set. + * If a planar format is specified, several pointers will be set pointing to + * the different picture planes and the line sizes of the different planes + * will be stored in the lines_sizes array. + * Call with ptr == NULL to get the required size for the ptr buffer. + * + * @param picture AVPicture whose fields are to be filled in + * @param ptr Buffer which will contain or contains the actual image data + * @param pix_fmt The format in which the picture data is stored. + * @param width the width of the image in pixels + * @param height the height of the image in pixels + * @return size of the image data in bytes + */ +int avpicture_fill(AVPicture *picture, uint8_t *ptr, + enum PixelFormat pix_fmt, int width, int height); +int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height, + unsigned char *dest, int dest_size); + +/** + * Calculate the size in bytes that a picture of the given width and height + * would occupy if stored in the given picture format. + * Note that this returns the size of a compact representation as generated + * by avpicture_layout, which can be smaller than the size required for e.g. + * avpicture_fill. + * + * @param pix_fmt the given picture format + * @param width the width of the image + * @param height the height of the image + * @return Image data size in bytes or -1 on error (e.g. too large dimensions). + */ +int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height); +void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift); +const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt); +void avcodec_set_dimensions(AVCodecContext *s, int width, int height); + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/** + * Returns the pixel format corresponding to the name name. + * + * If there is no pixel format with name name, then looks for a + * pixel format with the name corresponding to the native endian + * format of name. + * For example in a little-endian system, first looks for "gray16", + * then for "gray16le". + * + * Finally if no pixel format has been found, returns PIX_FMT_NONE. + * + * @deprecated Deprecated in favor of av_get_pix_fmt(). + */ +attribute_deprecated enum PixelFormat avcodec_get_pix_fmt(const char* name); +#endif + +/** + * Returns a value representing the fourCC code associated to the + * pixel format pix_fmt, or 0 if no associated fourCC code can be + * found. + */ +unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat pix_fmt); + +#define FF_LOSS_RESOLUTION 0x0001 /**< loss due to resolution change */ +#define FF_LOSS_DEPTH 0x0002 /**< loss due to color depth change */ +#define FF_LOSS_COLORSPACE 0x0004 /**< loss due to color space conversion */ +#define FF_LOSS_ALPHA 0x0008 /**< loss of alpha bits */ +#define FF_LOSS_COLORQUANT 0x0010 /**< loss due to color quantization */ +#define FF_LOSS_CHROMA 0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */ + +/** + * Computes what kind of losses will occur when converting from one specific + * pixel format to another. + * When converting from one pixel format to another, information loss may occur. + * For example, when converting from RGB24 to GRAY, the color information will + * be lost. Similarly, other losses occur when converting from some formats to + * other formats. These losses can involve loss of chroma, but also loss of + * resolution, loss of color depth, loss due to the color space conversion, loss + * of the alpha bits or loss due to color quantization. + * avcodec_get_fix_fmt_loss() informs you about the various types of losses + * which will occur when converting from one pixel format to another. + * + * @param[in] dst_pix_fmt destination pixel format + * @param[in] src_pix_fmt source pixel format + * @param[in] has_alpha Whether the source pixel format alpha channel is used. + * @return Combination of flags informing you what kind of losses will occur. + */ +int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt, + int has_alpha); + +/** + * Finds the best pixel format to convert to given a certain source pixel + * format. When converting from one pixel format to another, information loss + * may occur. For example, when converting from RGB24 to GRAY, the color + * information will be lost. Similarly, other losses occur when converting from + * some formats to other formats. avcodec_find_best_pix_fmt() searches which of + * the given pixel formats should be used to suffer the least amount of loss. + * The pixel formats from which it chooses one, are determined by the + * pix_fmt_mask parameter. + * + * @code + * src_pix_fmt = PIX_FMT_YUV420P; + * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24); + * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss); + * @endcode + * + * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from + * @param[in] src_pix_fmt source pixel format + * @param[in] has_alpha Whether the source pixel format alpha channel is used. + * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. + * @return The best pixel format to convert to or -1 if none was found. + */ +enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt, + int has_alpha, int *loss_ptr); + + +/** + * Print in buf the string corresponding to the pixel format with + * number pix_fmt, or an header if pix_fmt is negative. + * + * @param[in] buf the buffer where to write the string + * @param[in] buf_size the size of buf + * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or + * a negative value to print the corresponding header. + * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1. + */ +void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt); + +#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */ +#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */ + +/** + * Tell if an image really has transparent alpha values. + * @return ored mask of FF_ALPHA_xxx constants + */ +int img_get_alpha_info(const AVPicture *src, + enum PixelFormat pix_fmt, int width, int height); + +/* deinterlace a picture */ +/* deinterlace - if not supported return -1 */ +int avpicture_deinterlace(AVPicture *dst, const AVPicture *src, + enum PixelFormat pix_fmt, int width, int height); + +/* external high level API */ + +/** + * If c is NULL, returns the first registered codec, + * if c is non-NULL, returns the next registered codec after c, + * or NULL if c is the last one. + */ +AVCodec *av_codec_next(AVCodec *c); + +/** + * Returns the LIBAVCODEC_VERSION_INT constant. + */ +unsigned avcodec_version(void); + +/** + * Returns the libavcodec build-time configuration. + */ +const char *avcodec_configuration(void); + +/** + * Returns the libavcodec license. + */ +const char *avcodec_license(void); + +/** + * Initializes libavcodec. + * + * @warning This function must be called before any other libavcodec + * function. + */ +void avcodec_init(void); + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/** + * @deprecated Deprecated in favor of avcodec_register(). + */ +attribute_deprecated void register_avcodec(AVCodec *codec); +#endif + +/** + * Register the codec codec and initialize libavcodec. + * + * @see avcodec_init() + */ +void avcodec_register(AVCodec *codec); + +/** + * Finds a registered encoder with a matching codec ID. + * + * @param id CodecID of the requested encoder + * @return An encoder if one was found, NULL otherwise. + */ +AVCodec *avcodec_find_encoder(enum CodecID id); + +/** + * Finds a registered encoder with the specified name. + * + * @param name name of the requested encoder + * @return An encoder if one was found, NULL otherwise. + */ +AVCodec *avcodec_find_encoder_by_name(const char *name); + +/** + * Finds a registered decoder with a matching codec ID. + * + * @param id CodecID of the requested decoder + * @return A decoder if one was found, NULL otherwise. + */ +AVCodec *avcodec_find_decoder(enum CodecID id); + +/** + * Finds a registered decoder with the specified name. + * + * @param name name of the requested decoder + * @return A decoder if one was found, NULL otherwise. + */ +AVCodec *avcodec_find_decoder_by_name(const char *name); +void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode); + +/** + * Sets the fields of the given AVCodecContext to default values. + * + * @param s The AVCodecContext of which the fields should be set to default values. + */ +void avcodec_get_context_defaults(AVCodecContext *s); + +/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! */ +void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType); + +/** + * Allocates an AVCodecContext and sets its fields to default values. The + * resulting struct can be deallocated by simply calling av_free(). + * + * @return An AVCodecContext filled with default values or NULL on failure. + * @see avcodec_get_context_defaults + */ +AVCodecContext *avcodec_alloc_context(void); + +/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! */ +AVCodecContext *avcodec_alloc_context2(enum AVMediaType); + +/** + * Copy the settings of the source AVCodecContext into the destination + * AVCodecContext. The resulting destination codec context will be + * unopened, i.e. you are required to call avcodec_open() before you + * can use this AVCodecContext to decode/encode video/audio data. + * + * @param dest target codec context, should be initialized with + * avcodec_alloc_context(), but otherwise uninitialized + * @param src source codec context + * @return AVERROR() on error (e.g. memory allocation error), 0 on success + */ +int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src); + +/** + * Sets the fields of the given AVFrame to default values. + * + * @param pic The AVFrame of which the fields should be set to default values. + */ +void avcodec_get_frame_defaults(AVFrame *pic); + +/** + * Allocates an AVFrame and sets its fields to default values. The resulting + * struct can be deallocated by simply calling av_free(). + * + * @return An AVFrame filled with default values or NULL on failure. + * @see avcodec_get_frame_defaults + */ +AVFrame *avcodec_alloc_frame(void); + +int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic); +void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic); +int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic); + +/** + * Returns the amount of padding in pixels which the get_buffer callback must + * provide around the edge of the image for codecs which do not have the + * CODEC_FLAG_EMU_EDGE flag. + * + * @return Required padding in pixels. + */ +unsigned avcodec_get_edge_width(void); +/** + * Modifies width and height values so that they will result in a memory + * buffer that is acceptable for the codec if you do not use any horizontal + * padding. + * + * May only be used if a codec with CODEC_CAP_DR1 has been opened. + * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased + * according to avcodec_get_edge_width() before. + */ +void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height); +/** + * Modifies width and height values so that they will result in a memory + * buffer that is acceptable for the codec if you also ensure that all + * line sizes are a multiple of the respective linesize_align[i]. + * + * May only be used if a codec with CODEC_CAP_DR1 has been opened. + * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased + * according to avcodec_get_edge_width() before. + */ +void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, + int linesize_align[4]); + +/** + * Checks if the given dimension of a picture is valid, meaning that all + * bytes of the picture can be addressed with a signed int. + * + * @param[in] w Width of the picture. + * @param[in] h Height of the picture. + * @return Zero if valid, a negative value if invalid. + */ +int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h); +enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt); + +int avcodec_thread_init(AVCodecContext *s, int thread_count); +void avcodec_thread_free(AVCodecContext *s); +int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size); +int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count); +//FIXME func typedef + +/** + * Initializes the AVCodecContext to use the given AVCodec. Prior to using this + * function the context has to be allocated. + * + * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), + * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for + * retrieving a codec. + * + * @warning This function is not thread safe! + * + * @code + * avcodec_register_all(); + * codec = avcodec_find_decoder(CODEC_ID_H264); + * if (!codec) + * exit(1); + * + * context = avcodec_alloc_context(); + * + * if (avcodec_open(context, codec) < 0) + * exit(1); + * @endcode + * + * @param avctx The context which will be set up to use the given codec. + * @param codec The codec to use within the context. + * @return zero on success, a negative value on error + * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder + */ +int avcodec_open(AVCodecContext *avctx, AVCodec *codec); + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/** + * Decodes an audio frame from buf into samples. + * Wrapper function which calls avcodec_decode_audio3. + * + * @deprecated Use avcodec_decode_audio3 instead. + * @param avctx the codec context + * @param[out] samples the output buffer + * @param[in,out] frame_size_ptr the output buffer size in bytes + * @param[in] buf the input buffer + * @param[in] buf_size the input buffer size in bytes + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + */ +attribute_deprecated int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples, + int *frame_size_ptr, + const uint8_t *buf, int buf_size); +#endif + +/** + * Decodes the audio frame of size avpkt->size from avpkt->data into samples. + * Some decoders may support multiple frames in a single AVPacket, such + * decoders would then just decode the first frame. In this case, + * avcodec_decode_audio3 has to be called again with an AVPacket that contains + * the remaining data in order to decode the second frame etc. + * If no frame + * could be outputted, frame_size_ptr is zero. Otherwise, it is the + * decompressed frame size in bytes. + * + * @warning You must set frame_size_ptr to the allocated size of the + * output buffer before calling avcodec_decode_audio3(). + * + * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than + * the actual read bytes because some optimized bitstream readers read 32 or 64 + * bits at once and could read over the end. + * + * @warning The end of the input buffer avpkt->data should be set to 0 to ensure that + * no overreading happens for damaged MPEG streams. + * + * @note You might have to align the input buffer avpkt->data and output buffer + * samples. The alignment requirements depend on the CPU: On some CPUs it isn't + * necessary at all, on others it won't work at all if not aligned and on others + * it will work but it will have an impact on performance. + * + * In practice, avpkt->data should have 4 byte alignment at minimum and + * samples should be 16 byte aligned unless the CPU doesn't need it + * (AltiVec and SSE do). + * + * @param avctx the codec context + * @param[out] samples the output buffer, sample type in avctx->sample_fmt + * @param[in,out] frame_size_ptr the output buffer size in bytes + * @param[in] avpkt The input AVPacket containing the input buffer. + * You can create such packet with av_init_packet() and by then setting + * data and size, some decoders might in addition need other fields. + * All decoders are designed to use the least fields possible though. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame data was decompressed (used) from the input AVPacket. + */ +int avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, + int *frame_size_ptr, + AVPacket *avpkt); + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/** + * Decodes a video frame from buf into picture. + * Wrapper function which calls avcodec_decode_video2. + * + * @deprecated Use avcodec_decode_video2 instead. + * @param avctx the codec context + * @param[out] picture The AVFrame in which the decoded video frame will be stored. + * @param[in] buf the input buffer + * @param[in] buf_size the size of the input buffer in bytes + * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + */ +attribute_deprecated int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, + int *got_picture_ptr, + const uint8_t *buf, int buf_size); +#endif + +/** + * Decodes the video frame of size avpkt->size from avpkt->data into picture. + * Some decoders may support multiple frames in a single AVPacket, such + * decoders would then just decode the first frame. + * + * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than + * the actual read bytes because some optimized bitstream readers read 32 or 64 + * bits at once and could read over the end. + * + * @warning The end of the input buffer buf should be set to 0 to ensure that + * no overreading happens for damaged MPEG streams. + * + * @note You might have to align the input buffer avpkt->data. + * The alignment requirements depend on the CPU: on some CPUs it isn't + * necessary at all, on others it won't work at all if not aligned and on others + * it will work but it will have an impact on performance. + * + * In practice, avpkt->data should have 4 byte alignment at minimum. + * + * @note Some codecs have a delay between input and output, these need to be + * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames. + * + * @param avctx the codec context + * @param[out] picture The AVFrame in which the decoded video frame will be stored. + * Use avcodec_alloc_frame to get an AVFrame, the codec will + * allocate memory for the actual bitmap. + * @param[in] avpkt The input AVpacket containing the input buffer. + * You can create such packet with av_init_packet() and by then setting + * data and size, some decoders might in addition need other fields like + * flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least + * fields possible. + * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + */ +int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, + int *got_picture_ptr, + AVPacket *avpkt); + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/* Decode a subtitle message. Return -1 if error, otherwise return the + * number of bytes used. If no subtitle could be decompressed, + * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */ +attribute_deprecated int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub, + int *got_sub_ptr, + const uint8_t *buf, int buf_size); +#endif + +/** + * Decodes a subtitle message. + * Returns a negative value on error, otherwise returns the number of bytes used. + * If no subtitle could be decompressed, got_sub_ptr is zero. + * Otherwise, the subtitle is stored in *sub. + * + * @param avctx the codec context + * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored. + * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero. + * @param[in] avpkt The input AVPacket containing the input buffer. + */ +int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, + int *got_sub_ptr, + AVPacket *avpkt); +int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, + int *data_size_ptr, + uint8_t *buf, int buf_size); + +/** + * Encodes an audio frame from samples into buf. + * + * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large. + * However, for PCM audio the user will know how much space is needed + * because it depends on the value passed in buf_size as described + * below. In that case a lower value can be used. + * + * @param avctx the codec context + * @param[out] buf the output buffer + * @param[in] buf_size the output buffer size + * @param[in] samples the input buffer containing the samples + * The number of samples read from this buffer is frame_size*channels, + * both of which are defined in avctx. + * For PCM audio the number of samples read from samples is equal to + * buf_size * input_sample_size / output_sample_size. + * @return On error a negative value is returned, on success zero or the number + * of bytes used to encode the data read from the input buffer. + */ +int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, + const short *samples); + +/** + * Encodes a video frame from pict into buf. + * The input picture should be + * stored using a specific format, namely avctx.pix_fmt. + * + * @param avctx the codec context + * @param[out] buf the output buffer for the bitstream of encoded frame + * @param[in] buf_size the size of the output buffer in bytes + * @param[in] pict the input picture to encode + * @return On error a negative value is returned, on success zero or the number + * of bytes used from the output buffer. + */ +int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, + const AVFrame *pict); +int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, + const AVSubtitle *sub); + +int avcodec_close(AVCodecContext *avctx); + +/** + * Register all the codecs, parsers and bitstream filters which were enabled at + * configuration time. If you do not call this function you can select exactly + * which formats you want to support, by using the individual registration + * functions. + * + * @see avcodec_register + * @see av_register_codec_parser + * @see av_register_bitstream_filter + */ +void avcodec_register_all(void); + +/** + * Flush buffers, should be called when seeking or when switching to a different stream. + */ +void avcodec_flush_buffers(AVCodecContext *avctx); + +void avcodec_default_free_buffers(AVCodecContext *s); + +/* misc useful functions */ + +/** + * Returns a single letter to describe the given picture type pict_type. + * + * @param[in] pict_type the picture type + * @return A single character representing the picture type. + */ +char av_get_pict_type_char(int pict_type); + +/** + * Returns codec bits per sample. + * + * @param[in] codec_id the codec + * @return Number of bits per sample or zero if unknown for the given codec. + */ +int av_get_bits_per_sample(enum CodecID codec_id); + +/** + * Returns sample format bits per sample. + * + * @param[in] sample_fmt the sample format + * @return Number of bits per sample or zero if unknown for the given sample format. + */ +int av_get_bits_per_sample_format(enum SampleFormat sample_fmt); + +/* frame parsing */ +typedef struct AVCodecParserContext { + void *priv_data; + struct AVCodecParser *parser; + int64_t frame_offset; /* offset of the current frame */ + int64_t cur_offset; /* current offset + (incremented by each av_parser_parse()) */ + int64_t next_frame_offset; /* offset of the next frame */ + /* video info */ + int pict_type; /* XXX: Put it back in AVCodecContext. */ + /** + * This field is used for proper frame duration computation in lavf. + * It signals, how much longer the frame duration of the current frame + * is compared to normal frame duration. + * + * frame_duration = (1 + repeat_pict) * time_base + * + * It is used by codecs like H.264 to display telecined material. + */ + int repeat_pict; /* XXX: Put it back in AVCodecContext. */ + int64_t pts; /* pts of the current frame */ + int64_t dts; /* dts of the current frame */ + + /* private data */ + int64_t last_pts; + int64_t last_dts; + int fetch_timestamp; + +#define AV_PARSER_PTS_NB 4 + int cur_frame_start_index; + int64_t cur_frame_offset[AV_PARSER_PTS_NB]; + int64_t cur_frame_pts[AV_PARSER_PTS_NB]; + int64_t cur_frame_dts[AV_PARSER_PTS_NB]; + + int flags; +#define PARSER_FLAG_COMPLETE_FRAMES 0x0001 + + int64_t offset; ///< byte offset from starting packet start + int64_t cur_frame_end[AV_PARSER_PTS_NB]; + + /*! + * Set by parser to 1 for key frames and 0 for non-key frames. + * It is initialized to -1, so if the parser doesn't set this flag, + * old-style fallback using FF_I_TYPE picture type as key frames + * will be used. + */ + int key_frame; + + /** + * Time difference in stream time base units from the pts of this + * packet to the point at which the output from the decoder has converged + * independent from the availability of previous frames. That is, the + * frames are virtually identical no matter if decoding started from + * the very first frame or from this keyframe. + * Is AV_NOPTS_VALUE if unknown. + * This field is not the display duration of the current frame. + * + * The purpose of this field is to allow seeking in streams that have no + * keyframes in the conventional sense. It corresponds to the + * recovery point SEI in H.264 and match_time_delta in NUT. It is also + * essential for some types of subtitle streams to ensure that all + * subtitles are correctly displayed after seeking. + */ + int64_t convergence_duration; + + // Timestamp generation support: + /** + * Synchronization point for start of timestamp generation. + * + * Set to >0 for sync point, 0 for no sync point and <0 for undefined + * (default). + * + * For example, this corresponds to presence of H.264 buffering period + * SEI message. + */ + int dts_sync_point; + + /** + * Offset of the current timestamp against last timestamp sync point in + * units of AVCodecContext.time_base. + * + * Set to INT_MIN when dts_sync_point unused. Otherwise, it must + * contain a valid timestamp offset. + * + * Note that the timestamp of sync point has usually a nonzero + * dts_ref_dts_delta, which refers to the previous sync point. Offset of + * the next frame after timestamp sync point will be usually 1. + * + * For example, this corresponds to H.264 cpb_removal_delay. + */ + int dts_ref_dts_delta; + + /** + * Presentation delay of current frame in units of AVCodecContext.time_base. + * + * Set to INT_MIN when dts_sync_point unused. Otherwise, it must + * contain valid non-negative timestamp delta (presentation time of a frame + * must not lie in the past). + * + * This delay represents the difference between decoding and presentation + * time of the frame. + * + * For example, this corresponds to H.264 dpb_output_delay. + */ + int pts_dts_delta; + + /** + * Position of the packet in file. + * + * Analogous to cur_frame_pts/dts + */ + int64_t cur_frame_pos[AV_PARSER_PTS_NB]; + + /** + * Byte position of currently parsed frame in stream. + */ + int64_t pos; + + /** + * Previous frame byte position. + */ + int64_t last_pos; +} AVCodecParserContext; + +typedef struct AVCodecParser { + int codec_ids[5]; /* several codec IDs are permitted */ + int priv_data_size; + int (*parser_init)(AVCodecParserContext *s); + int (*parser_parse)(AVCodecParserContext *s, + AVCodecContext *avctx, + const uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size); + void (*parser_close)(AVCodecParserContext *s); + int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size); + struct AVCodecParser *next; +} AVCodecParser; + +AVCodecParser *av_parser_next(AVCodecParser *c); + +void av_register_codec_parser(AVCodecParser *parser); +AVCodecParserContext *av_parser_init(int codec_id); + +#if LIBAVCODEC_VERSION_MAJOR < 53 +attribute_deprecated +int av_parser_parse(AVCodecParserContext *s, + AVCodecContext *avctx, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size, + int64_t pts, int64_t dts); +#endif + +/** + * Parse a packet. + * + * @param s parser context. + * @param avctx codec context. + * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished. + * @param poutbuf_size set to size of parsed buffer or zero if not yet finished. + * @param buf input buffer. + * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output). + * @param pts input presentation timestamp. + * @param dts input decoding timestamp. + * @param pos input byte position in stream. + * @return the number of bytes of the input bitstream used. + * + * Example: + * @code + * while(in_len){ + * len = av_parser_parse2(myparser, AVCodecContext, &data, &size, + * in_data, in_len, + * pts, dts, pos); + * in_data += len; + * in_len -= len; + * + * if(size) + * decode_frame(data, size); + * } + * @endcode + */ +int av_parser_parse2(AVCodecParserContext *s, + AVCodecContext *avctx, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size, + int64_t pts, int64_t dts, + int64_t pos); + +int av_parser_change(AVCodecParserContext *s, + AVCodecContext *avctx, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size, int keyframe); +void av_parser_close(AVCodecParserContext *s); + + +typedef struct AVBitStreamFilterContext { + void *priv_data; + struct AVBitStreamFilter *filter; + AVCodecParserContext *parser; + struct AVBitStreamFilterContext *next; +} AVBitStreamFilterContext; + + +typedef struct AVBitStreamFilter { + const char *name; + int priv_data_size; + int (*filter)(AVBitStreamFilterContext *bsfc, + AVCodecContext *avctx, const char *args, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size, int keyframe); + void (*close)(AVBitStreamFilterContext *bsfc); + struct AVBitStreamFilter *next; +} AVBitStreamFilter; + +void av_register_bitstream_filter(AVBitStreamFilter *bsf); +AVBitStreamFilterContext *av_bitstream_filter_init(const char *name); +int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, + AVCodecContext *avctx, const char *args, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size, int keyframe); +void av_bitstream_filter_close(AVBitStreamFilterContext *bsf); + +AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f); + +/* memory */ + +/** + * Reallocates the given block if it is not large enough, otherwise it + * does nothing. + * + * @see av_realloc + */ +void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size); + +/** + * Allocates a buffer, reusing the given one if large enough. + * + * Contrary to av_fast_realloc the current buffer contents might not be + * preserved and on error the old buffer is freed, thus no special + * handling to avoid memleaks is necessary. + * + * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer + * @param size size of the buffer *ptr points to + * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and + * *size 0 if an error occurred. + */ +void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size); + +/** + * Copy image 'src' to 'dst'. + */ +void av_picture_copy(AVPicture *dst, const AVPicture *src, + enum PixelFormat pix_fmt, int width, int height); + +/** + * Crop image top and left side. + */ +int av_picture_crop(AVPicture *dst, const AVPicture *src, + enum PixelFormat pix_fmt, int top_band, int left_band); + +/** + * Pad image. + */ +int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum PixelFormat pix_fmt, + int padtop, int padbottom, int padleft, int padright, int *color); + +/** + * Encodes extradata length to a buffer. Used by xiph codecs. + * + * @param s buffer to write to; must be at least (v/255+1) bytes long + * @param v size of extradata in bytes + * @return number of bytes written to the buffer. + */ +unsigned int av_xiphlacing(unsigned char *s, unsigned int v); + +/** + * Parses str and put in width_ptr and height_ptr the detected values. + * + * @return 0 in case of a successful parsing, a negative value otherwise + * @param[in] str the string to parse: it has to be a string in the format + * <width>x<height> or a valid video frame size abbreviation. + * @param[in,out] width_ptr pointer to the variable which will contain the detected + * frame width value + * @param[in,out] height_ptr pointer to the variable which will contain the detected + * frame height value + */ +int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str); + +/** + * Parses str and put in frame_rate the detected values. + * + * @return 0 in case of a successful parsing, a negative value otherwise + * @param[in] str the string to parse: it has to be a string in the format + * <frame_rate_num>/<frame_rate_den>, a float number or a valid video rate abbreviation + * @param[in,out] frame_rate pointer to the AVRational which will contain the detected + * frame rate + */ +int av_parse_video_frame_rate(AVRational *frame_rate, const char *str); + +/** + * Logs a generic warning message about a missing feature. This function is + * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) + * only, and would normally not be used by applications. + * @param[in] avc a pointer to an arbitrary struct of which the first field is + * a pointer to an AVClass struct + * @param[in] feature string containing the name of the missing feature + * @param[in] want_sample indicates if samples are wanted which exhibit this feature. + * If want_sample is non-zero, additional verbage will be added to the log + * message which tells the user how to report samples to the development + * mailing list. + */ +void av_log_missing_feature(void *avc, const char *feature, int want_sample); + +/** + * Logs a generic warning message asking for a sample. This function is + * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) + * only, and would normally not be used by applications. + * @param[in] avc a pointer to an arbitrary struct of which the first field is + * a pointer to an AVClass struct + * @param[in] msg string containing an optional message, or NULL if no message + */ +void av_log_ask_for_sample(void *avc, const char *msg); + +/** + * Registers the hardware accelerator hwaccel. + */ +void av_register_hwaccel(AVHWAccel *hwaccel); + +/** + * If hwaccel is NULL, returns the first registered hardware accelerator, + * if hwaccel is non-NULL, returns the next registered hardware accelerator + * after hwaccel, or NULL if hwaccel is the last one. + */ +AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel); + + +/** + * Lock operation used by lockmgr + */ +enum AVLockOp { + AV_LOCK_CREATE, ///< Create a mutex + AV_LOCK_OBTAIN, ///< Lock the mutex + AV_LOCK_RELEASE, ///< Unlock the mutex + AV_LOCK_DESTROY, ///< Free mutex resources +}; + +/** + * Register a user provided lock manager supporting the operations + * specified by AVLockOp. mutex points to a (void *) where the + * lockmgr should store/get a pointer to a user allocated mutex. It's + * NULL upon AV_LOCK_CREATE and != NULL for all other ops. + * + * @param cb User defined callback. Note: FFmpeg may invoke calls to this + * callback during the call to av_lockmgr_register(). + * Thus, the application must be prepared to handle that. + * If cb is set to NULL the lockmgr will be unregistered. + * Also note that during unregistration the previously registered + * lockmgr callback may also be invoked. + */ +int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)); + +#endif /* AVCODEC_AVCODEC_H */ diff --git a/include/libavcodec/avfft.h b/include/libavcodec/avfft.h new file mode 100644 index 00000000..623f0a33 --- /dev/null +++ b/include/libavcodec/avfft.h @@ -0,0 +1,99 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_AVFFT_H +#define AVCODEC_AVFFT_H + +typedef float FFTSample; + +typedef struct FFTComplex { + FFTSample re, im; +} FFTComplex; + +typedef struct FFTContext FFTContext; + +/** + * Set up a complex FFT. + * @param nbits log2 of the length of the input array + * @param inverse if 0 perform the forward transform, if 1 perform the inverse + */ +FFTContext *av_fft_init(int nbits, int inverse); + +/** + * Do the permutation needed BEFORE calling ff_fft_calc(). + */ +void av_fft_permute(FFTContext *s, FFTComplex *z); + +/** + * Do a complex FFT with the parameters defined in av_fft_init(). The + * input data must be permuted before. No 1.0/sqrt(n) normalization is done. + */ +void av_fft_calc(FFTContext *s, FFTComplex *z); + +void av_fft_end(FFTContext *s); + +FFTContext *av_mdct_init(int nbits, int inverse, double scale); +void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input); +void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input); +void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input); +void av_mdct_end(FFTContext *s); + +/* Real Discrete Fourier Transform */ + +enum RDFTransformType { + DFT_R2C, + IDFT_C2R, + IDFT_R2C, + DFT_C2R, +}; + +typedef struct RDFTContext RDFTContext; + +/** + * Set up a real FFT. + * @param nbits log2 of the length of the input array + * @param trans the type of transform + */ +RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans); +void av_rdft_calc(RDFTContext *s, FFTSample *data); +void av_rdft_end(RDFTContext *s); + +/* Discrete Cosine Transform */ + +typedef struct DCTContext DCTContext; + +enum DCTTransformType { + DCT_II = 0, + DCT_III, + DCT_I, + DST_I, +}; + +/** + * Sets up DCT. + * @param nbits size of the input array: + * (1 << nbits) for DCT-II, DCT-III and DST-I + * (1 << nbits) + 1 for DCT-I + * + * @note the first element of the input of DST-I is ignored + */ +DCTContext *av_dct_init(int nbits, enum DCTTransformType type); +void av_dct_calc(DCTContext *s, FFTSample *data); +void av_dct_end (DCTContext *s); + +#endif /* AVCODEC_AVFFT_H */ diff --git a/include/libavcodec/dxva2.h b/include/libavcodec/dxva2.h new file mode 100644 index 00000000..5c5fe21e --- /dev/null +++ b/include/libavcodec/dxva2.h @@ -0,0 +1,68 @@ +/* + * DXVA2 HW acceleration + * + * copyright (c) 2009 Laurent Aimar + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_DXVA_H +#define AVCODEC_DXVA_H + +#include <stdint.h> + +#include <dxva2api.h> + +/** + * This structure is used to provides the necessary configurations and data + * to the DXVA2 FFmpeg HWAccel implementation. + * + * The application must make it available as AVCodecContext.hwaccel_context. + */ +struct dxva_context { + /** + * DXVA2 decoder object + */ + IDirectXVideoDecoder *decoder; + + /** + * DXVA2 configuration used to create the decoder + */ + const DXVA2_ConfigPictureDecode *cfg; + + /** + * The number of surface in the surface array + */ + unsigned surface_count; + + /** + * The array of Direct3D surfaces used to create the decoder + */ + LPDIRECT3DSURFACE9 *surface; + + /** + * A bit field configuring the workarounds needed for using the decoder + */ + uint64_t workaround; + + /** + * Private to the FFmpeg AVHWAccel implementation + */ + unsigned report_id; +}; + +#endif /* AVCODEC_DXVA_H */ diff --git a/include/libavcodec/opt.h b/include/libavcodec/opt.h new file mode 100644 index 00000000..55ca4ea6 --- /dev/null +++ b/include/libavcodec/opt.h @@ -0,0 +1,211 @@ +/* + * AVOptions + * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_OPT_H +#define AVCODEC_OPT_H + +/** + * @file + * AVOptions + */ + +#include "libavutil/rational.h" +#include "avcodec.h" + +enum AVOptionType{ + FF_OPT_TYPE_FLAGS, + FF_OPT_TYPE_INT, + FF_OPT_TYPE_INT64, + FF_OPT_TYPE_DOUBLE, + FF_OPT_TYPE_FLOAT, + FF_OPT_TYPE_STRING, + FF_OPT_TYPE_RATIONAL, + FF_OPT_TYPE_BINARY, ///< offset must point to a pointer immediately followed by an int for the length + FF_OPT_TYPE_CONST=128, +}; + +/** + * AVOption + */ +typedef struct AVOption { + const char *name; + + /** + * short English help text + * @todo What about other languages? + */ + const char *help; + + /** + * The offset relative to the context structure where the option + * value is stored. It should be 0 for named constants. + */ + int offset; + enum AVOptionType type; + + /** + * the default value for scalar options + */ + double default_val; + double min; ///< minimum valid value for the option + double max; ///< maximum valid value for the option + + int flags; +#define AV_OPT_FLAG_ENCODING_PARAM 1 ///< a generic parameter which can be set by the user for muxing or encoding +#define AV_OPT_FLAG_DECODING_PARAM 2 ///< a generic parameter which can be set by the user for demuxing or decoding +#define AV_OPT_FLAG_METADATA 4 ///< some data extracted or inserted into the file like title, comment, ... +#define AV_OPT_FLAG_AUDIO_PARAM 8 +#define AV_OPT_FLAG_VIDEO_PARAM 16 +#define AV_OPT_FLAG_SUBTITLE_PARAM 32 +//FIXME think about enc-audio, ... style flags + + /** + * The logical unit to which the option belongs. Non-constant + * options and corresponding named constants share the same + * unit. May be NULL. + */ + const char *unit; +} AVOption; + +/** + * AVOption2. + * THIS IS NOT PART OF THE API/ABI YET! + * This is identical to AVOption except that default_val was replaced by + * an union, it should be compatible with AVOption on normal platforms. + */ +typedef struct AVOption2 { + const char *name; + + /** + * short English help text + * @todo What about other languages? + */ + const char *help; + + /** + * The offset relative to the context structure where the option + * value is stored. It should be 0 for named constants. + */ + int offset; + enum AVOptionType type; + + /** + * the default value for scalar options + */ + union { + double dbl; + const char *str; + } default_val; + + double min; ///< minimum valid value for the option + double max; ///< maximum valid value for the option + + int flags; +/* +#define AV_OPT_FLAG_ENCODING_PARAM 1 ///< a generic parameter which can be set by the user for muxing or encoding +#define AV_OPT_FLAG_DECODING_PARAM 2 ///< a generic parameter which can be set by the user for demuxing or decoding +#define AV_OPT_FLAG_METADATA 4 ///< some data extracted or inserted into the file like title, comment, ... +#define AV_OPT_FLAG_AUDIO_PARAM 8 +#define AV_OPT_FLAG_VIDEO_PARAM 16 +#define AV_OPT_FLAG_SUBTITLE_PARAM 32 +*/ +//FIXME think about enc-audio, ... style flags + + /** + * The logical unit to which the option belongs. Non-constant + * options and corresponding named constants share the same + * unit. May be NULL. + */ + const char *unit; +} AVOption2; + + +/** + * Looks for an option in obj. Looks only for the options which + * have the flags set as specified in mask and flags (that is, + * for which it is the case that opt->flags & mask == flags). + * + * @param[in] obj a pointer to a struct whose first element is a + * pointer to an AVClass + * @param[in] name the name of the option to look for + * @param[in] unit the unit of the option to look for, or any if NULL + * @return a pointer to the option found, or NULL if no option + * has been found + */ +const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags); + +#if LIBAVCODEC_VERSION_MAJOR < 53 +/** + * @see av_set_string2() + */ +attribute_deprecated const AVOption *av_set_string(void *obj, const char *name, const char *val); + +/** + * @return a pointer to the AVOption corresponding to the field set or + * NULL if no matching AVOption exists, or if the value val is not + * valid + * @see av_set_string3() + */ +attribute_deprecated const AVOption *av_set_string2(void *obj, const char *name, const char *val, int alloc); +#endif + +/** + * Sets the field of obj with the given name to value. + * + * @param[in] obj A struct whose first element is a pointer to an + * AVClass. + * @param[in] name the name of the field to set + * @param[in] val The value to set. If the field is not of a string + * type, then the given string is parsed. + * SI postfixes and some named scalars are supported. + * If the field is of a numeric type, it has to be a numeric or named + * scalar. Behavior with more than one scalar and +- infix operators + * is undefined. + * If the field is of a flags type, it has to be a sequence of numeric + * scalars or named flags separated by '+' or '-'. Prefixing a flag + * with '+' causes it to be set without affecting the other flags; + * similarly, '-' unsets a flag. + * @param[out] o_out if non-NULL put here a pointer to the AVOption + * found + * @param alloc when 1 then the old value will be av_freed() and the + * new av_strduped() + * when 0 then no av_free() nor av_strdup() will be used + * @return 0 if the value has been set, or an AVERROR code in case of + * error: + * AVERROR(ENOENT) if no matching option exists + * AVERROR(ERANGE) if the value is out of range + * AVERROR(EINVAL) if the value is not valid + */ +int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out); + +const AVOption *av_set_double(void *obj, const char *name, double n); +const AVOption *av_set_q(void *obj, const char *name, AVRational n); +const AVOption *av_set_int(void *obj, const char *name, int64_t n); +double av_get_double(void *obj, const char *name, const AVOption **o_out); +AVRational av_get_q(void *obj, const char *name, const AVOption **o_out); +int64_t av_get_int(void *obj, const char *name, const AVOption **o_out); +const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len); +const AVOption *av_next_option(void *obj, const AVOption *last); +int av_opt_show(void *obj, void *av_log_obj); +void av_opt_set_defaults(void *s); +void av_opt_set_defaults2(void *s, int mask, int flags); + +#endif /* AVCODEC_OPT_H */ diff --git a/include/libavcodec/vaapi.h b/include/libavcodec/vaapi.h new file mode 100644 index 00000000..07568a47 --- /dev/null +++ b/include/libavcodec/vaapi.h @@ -0,0 +1,167 @@ +/* + * Video Acceleration API (shared data between FFmpeg and the video player) + * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1 + * + * Copyright (C) 2008-2009 Splitted-Desktop Systems + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_VAAPI_H +#define AVCODEC_VAAPI_H + +#include <stdint.h> + +/** + * \defgroup VAAPI_Decoding VA API Decoding + * \ingroup Decoder + * @{ + */ + +/** + * This structure is used to share data between the FFmpeg library and + * the client video application. + * This shall be zero-allocated and available as + * AVCodecContext.hwaccel_context. All user members can be set once + * during initialization or through each AVCodecContext.get_buffer() + * function call. In any case, they must be valid prior to calling + * decoding functions. + */ +struct vaapi_context { + /** + * Window system dependent data + * + * - encoding: unused + * - decoding: Set by user + */ + void *display; + + /** + * Configuration ID + * + * - encoding: unused + * - decoding: Set by user + */ + uint32_t config_id; + + /** + * Context ID (video decode pipeline) + * + * - encoding: unused + * - decoding: Set by user + */ + uint32_t context_id; + + /** + * VAPictureParameterBuffer ID + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + uint32_t pic_param_buf_id; + + /** + * VAIQMatrixBuffer ID + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + uint32_t iq_matrix_buf_id; + + /** + * VABitPlaneBuffer ID (for VC-1 decoding) + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + uint32_t bitplane_buf_id; + + /** + * Slice parameter/data buffer IDs + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + uint32_t *slice_buf_ids; + + /** + * Number of effective slice buffer IDs to send to the HW + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + unsigned int n_slice_buf_ids; + + /** + * Size of pre-allocated slice_buf_ids + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + unsigned int slice_buf_ids_alloc; + + /** + * Pointer to VASliceParameterBuffers + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + void *slice_params; + + /** + * Size of a VASliceParameterBuffer element + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + unsigned int slice_param_size; + + /** + * Size of pre-allocated slice_params + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + unsigned int slice_params_alloc; + + /** + * Number of slices currently filled in + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + unsigned int slice_count; + + /** + * Pointer to slice data buffer base + * - encoding: unused + * - decoding: Set by libavcodec + */ + const uint8_t *slice_data; + + /** + * Current size of slice data + * + * - encoding: unused + * - decoding: Set by libavcodec + */ + uint32_t slice_data_size; +}; + +/* @} */ + +#endif /* AVCODEC_VAAPI_H */ diff --git a/include/libavcodec/vdpau.h b/include/libavcodec/vdpau.h new file mode 100644 index 00000000..a8fa4d38 --- /dev/null +++ b/include/libavcodec/vdpau.h @@ -0,0 +1,89 @@ +/* + * The Video Decode and Presentation API for UNIX (VDPAU) is used for + * hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1. + * + * Copyright (C) 2008 NVIDIA + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_VDPAU_H +#define AVCODEC_VDPAU_H + +/** + * \defgroup Decoder VDPAU Decoder and Renderer + * + * VDPAU hardware acceleration has two modules + * - VDPAU decoding + * - VDPAU presentation + * + * The VDPAU decoding module parses all headers using FFmpeg + * parsing mechanisms and uses VDPAU for the actual decoding. + * + * As per the current implementation, the actual decoding + * and rendering (API calls) are done as part of the VDPAU + * presentation (vo_vdpau.c) module. + * + * @{ + * \defgroup VDPAU_Decoding VDPAU Decoding + * \ingroup Decoder + * @{ + */ + +#include <vdpau/vdpau.h> +#include <vdpau/vdpau_x11.h> + +/** \brief The videoSurface is used for rendering. */ +#define FF_VDPAU_STATE_USED_FOR_RENDER 1 + +/** + * \brief The videoSurface is needed for reference/prediction. + * The codec manipulates this. + */ +#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2 + +/** + * \brief This structure is used as a callback between the FFmpeg + * decoder (vd_) and presentation (vo_) module. + * This is used for defining a video frame containing surface, + * picture parameter, bitstream information etc which are passed + * between the FFmpeg decoder and its clients. + */ +struct vdpau_render_state { + VdpVideoSurface surface; ///< Used as rendered surface, never changed. + + int state; ///< Holds FF_VDPAU_STATE_* values. + + /** picture parameter information for all supported codecs */ + union VdpPictureInfo { + VdpPictureInfoH264 h264; + VdpPictureInfoMPEG1Or2 mpeg; + VdpPictureInfoVC1 vc1; + VdpPictureInfoMPEG4Part2 mpeg4; + } info; + + /** Describe size/location of the compressed video data. + Set to 0 when freeing bitstream_buffers. */ + int bitstream_buffers_allocated; + int bitstream_buffers_used; + /** The user is responsible for freeing this buffer using av_freep(). */ + VdpBitstreamBuffer *bitstream_buffers; +}; + +/* @}*/ + +#endif /* AVCODEC_VDPAU_H */ diff --git a/include/libavcodec/xvmc.h b/include/libavcodec/xvmc.h new file mode 100644 index 00000000..01f84b28 --- /dev/null +++ b/include/libavcodec/xvmc.h @@ -0,0 +1,172 @@ +/* + * Copyright (C) 2003 Ivan Kalvachev + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_XVMC_H +#define AVCODEC_XVMC_H + +#include <X11/extensions/XvMC.h> + +#include "avcodec.h" + +#if LIBAVCODEC_VERSION_MAJOR < 53 +#define AV_XVMC_STATE_DISPLAY_PENDING 1 /** the surface should be shown, the video driver manipulates this */ +#define AV_XVMC_STATE_PREDICTION 2 /** the surface is needed for prediction, the codec manipulates this */ +#define AV_XVMC_STATE_OSD_SOURCE 4 /** the surface is needed for subpicture rendering */ +#endif +#define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure that regular pixel routines haven't corrupted the struct + the number is 1337 speak for the letters IDCT MCo (motion compensation) */ + +struct xvmc_pix_fmt { + /** The field contains the special constant value AV_XVMC_ID. + It is used as a test that the application correctly uses the API, + and that there is no corruption caused by pixel routines. + - application - set during initialization + - libavcodec - unchanged + */ + int xvmc_id; + + /** Pointer to the block array allocated by XvMCCreateBlocks(). + The array has to be freed by XvMCDestroyBlocks(). + Each group of 64 values represents one data block of differential + pixel information (in MoCo mode) or coefficients for IDCT. + - application - set the pointer during initialization + - libavcodec - fills coefficients/pixel data into the array + */ + short* data_blocks; + + /** Pointer to the macroblock description array allocated by + XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks(). + - application - set the pointer during initialization + - libavcodec - fills description data into the array + */ + XvMCMacroBlock* mv_blocks; + + /** Number of macroblock descriptions that can be stored in the mv_blocks + array. + - application - set during initialization + - libavcodec - unchanged + */ + int allocated_mv_blocks; + + /** Number of blocks that can be stored at once in the data_blocks array. + - application - set during initialization + - libavcodec - unchanged + */ + int allocated_data_blocks; + + /** Indicates that the hardware would interpret data_blocks as IDCT + coefficients and perform IDCT on them. + - application - set during initialization + - libavcodec - unchanged + */ + int idct; + + /** In MoCo mode it indicates that intra macroblocks are assumed to be in + unsigned format; same as the XVMC_INTRA_UNSIGNED flag. + - application - set during initialization + - libavcodec - unchanged + */ + int unsigned_intra; + + /** Pointer to the surface allocated by XvMCCreateSurface(). + It has to be freed by XvMCDestroySurface() on application exit. + It identifies the frame and its state on the video hardware. + - application - set during initialization + - libavcodec - unchanged + */ + XvMCSurface* p_surface; + +/** Set by the decoder before calling ff_draw_horiz_band(), + needed by the XvMCRenderSurface function. */ +//@{ + /** Pointer to the surface used as past reference + - application - unchanged + - libavcodec - set + */ + XvMCSurface* p_past_surface; + + /** Pointer to the surface used as future reference + - application - unchanged + - libavcodec - set + */ + XvMCSurface* p_future_surface; + + /** top/bottom field or frame + - application - unchanged + - libavcodec - set + */ + unsigned int picture_structure; + + /** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence + - application - unchanged + - libavcodec - set + */ + unsigned int flags; +//}@ + + /** Number of macroblock descriptions in the mv_blocks array + that have already been passed to the hardware. + - application - zeroes it on get_buffer(). + A successful ff_draw_horiz_band() may increment it + with filled_mb_block_num or zero both. + - libavcodec - unchanged + */ + int start_mv_blocks_num; + + /** Number of new macroblock descriptions in the mv_blocks array (after + start_mv_blocks_num) that are filled by libavcodec and have to be + passed to the hardware. + - application - zeroes it on get_buffer() or after successful + ff_draw_horiz_band(). + - libavcodec - increment with one of each stored MB + */ + int filled_mv_blocks_num; + + /** Number of the the next free data block; one data block consists of + 64 short values in the data_blocks array. + All blocks before this one have already been claimed by placing their + position into the corresponding block description structure field, + that are part of the mv_blocks array. + - application - zeroes it on get_buffer(). + A successful ff_draw_horiz_band() may zero it together + with start_mb_blocks_num. + - libavcodec - each decoded macroblock increases it by the number + of coded blocks it contains. + */ + int next_free_data_block_num; + +/** extensions may be placed here */ +#if LIBAVCODEC_VERSION_MAJOR < 53 +//@{ + /** State flags used to work around limitations in the MPlayer video system. + 0 - Surface is not used. + 1 - Surface is still held in application to be displayed or is + still visible. + 2 - Surface is still held in libavcodec buffer for prediction. + */ + int state; + + /** pointer to the surface where the subpicture is rendered */ + void* p_osd_target_surface_render; +//}@ +#endif +}; + +#endif /* AVCODEC_XVMC_H */ diff --git a/include/libavformat/avformat.h b/include/libavformat/avformat.h new file mode 100644 index 00000000..dbd22bb8 --- /dev/null +++ b/include/libavformat/avformat.h @@ -0,0 +1,1369 @@ +/* + * copyright (c) 2001 Fabrice Bellard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVFORMAT_AVFORMAT_H +#define AVFORMAT_AVFORMAT_H + +#define LIBAVFORMAT_VERSION_MAJOR 52 +#define LIBAVFORMAT_VERSION_MINOR 64 +#define LIBAVFORMAT_VERSION_MICRO 2 + +#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ + LIBAVFORMAT_VERSION_MINOR, \ + LIBAVFORMAT_VERSION_MICRO) +#define LIBAVFORMAT_VERSION AV_VERSION(LIBAVFORMAT_VERSION_MAJOR, \ + LIBAVFORMAT_VERSION_MINOR, \ + LIBAVFORMAT_VERSION_MICRO) +#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT + +#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION) + +/** + * I return the LIBAVFORMAT_VERSION_INT constant. You got + * a fucking problem with that, douchebag? + */ +unsigned avformat_version(void); + +/** + * Returns the libavformat build-time configuration. + */ +const char *avformat_configuration(void); + +/** + * Returns the libavformat license. + */ +const char *avformat_license(void); + +#include <time.h> +#include <stdio.h> /* FILE */ +#include "libavcodec/avcodec.h" + +#include "avio.h" + +struct AVFormatContext; + + +/* + * Public Metadata API. + * The metadata API allows libavformat to export metadata tags to a client + * application using a sequence of key/value pairs. Like all strings in FFmpeg, + * metadata must be stored as UTF-8 encoded Unicode. Note that metadata + * exported by demuxers isn't checked to be valid UTF-8 in most cases. + * Important concepts to keep in mind: + * 1. Keys are unique; there can never be 2 tags with the same key. This is + * also meant semantically, i.e., a demuxer should not knowingly produce + * several keys that are literally different but semantically identical. + * E.g., key=Author5, key=Author6. In this example, all authors must be + * placed in the same tag. + * 2. Metadata is flat, not hierarchical; there are no subtags. If you + * want to store, e.g., the email address of the child of producer Alice + * and actor Bob, that could have key=alice_and_bobs_childs_email_address. + * 3. Several modifiers can be applied to the tag name. This is done by + * appending a dash character ('-') and the modifier name in the order + * they appear in the list below -- e.g. foo-eng-sort, not foo-sort-eng. + * a) language -- a tag whose value is localized for a particular language + * is appended with the ISO 639-2/B 3-letter language code. + * For example: Author-ger=Michael, Author-eng=Mike + * The original/default language is in the unqualified "Author" tag. + * A demuxer should set a default if it sets any translated tag. + * b) sorting -- a modified version of a tag that should be used for + * sorting will have '-sort' appended. E.g. artist="The Beatles", + * artist-sort="Beatles, The". + * + * 4. Tag names are normally exported exactly as stored in the container to + * allow lossless remuxing to the same format. For container-independent + * handling of metadata, av_metadata_conv() can convert it to ffmpeg generic + * format. Follows a list of generic tag names: + * + * album -- name of the set this work belongs to + * album_artist -- main creator of the set/album, if different from artist. + * e.g. "Various Artists" for compilation albums. + * artist -- main creator of the work + * comment -- any additional description of the file. + * composer -- who composed the work, if different from artist. + * copyright -- name of copyright holder. + * date -- date when the work was created, preferably in ISO 8601. + * disc -- number of a subset, e.g. disc in a multi-disc collection. + * encoder -- name/settings of the software/hardware that produced the file. + * encoded_by -- person/group who created the file. + * filename -- original name of the file. + * genre -- <self-evident>. + * language -- main language in which the work is performed, preferably + * in ISO 639-2 format. + * performer -- artist who performed the work, if different from artist. + * E.g for "Also sprach Zarathustra", artist would be "Richard + * Strauss" and performer "London Philharmonic Orchestra". + * publisher -- name of the label/publisher. + * title -- name of the work. + * track -- number of this work in the set, can be in form current/total. + */ + +#define AV_METADATA_MATCH_CASE 1 +#define AV_METADATA_IGNORE_SUFFIX 2 +#define AV_METADATA_DONT_STRDUP_KEY 4 +#define AV_METADATA_DONT_STRDUP_VAL 8 +#define AV_METADATA_DONT_OVERWRITE 16 ///< Don't overwrite existing tags. + +typedef struct { + char *key; + char *value; +}AVMetadataTag; + +typedef struct AVMetadata AVMetadata; +typedef struct AVMetadataConv AVMetadataConv; + +/** + * Gets a metadata element with matching key. + * @param prev Set to the previous matching element to find the next. + * If set to NULL the first matching element is returned. + * @param flags Allows case as well as suffix-insensitive comparisons. + * @return Found tag or NULL, changing key or value leads to undefined behavior. + */ +AVMetadataTag * +av_metadata_get(AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags); + +#if LIBAVFORMAT_VERSION_MAJOR == 52 +/** + * Sets the given tag in m, overwriting an existing tag. + * @param key tag key to add to m (will be av_strduped) + * @param value tag value to add to m (will be av_strduped) + * @return >= 0 on success otherwise an error code <0 + * @deprecated Use av_metadata_set2() instead. + */ +attribute_deprecated int av_metadata_set(AVMetadata **pm, const char *key, const char *value); +#endif + +/** + * Sets the given tag in m, overwriting an existing tag. + * @param key tag key to add to m (will be av_strduped depending on flags) + * @param value tag value to add to m (will be av_strduped depending on flags) + * @return >= 0 on success otherwise an error code <0 + */ +int av_metadata_set2(AVMetadata **pm, const char *key, const char *value, int flags); + +/** + * Converts all the metadata sets from ctx according to the source and + * destination conversion tables. If one of the tables is NULL, then + * tags are converted to/from ffmpeg generic tag names. + * @param d_conv destination tags format conversion table + * @param s_conv source tags format conversion table + */ +void av_metadata_conv(struct AVFormatContext *ctx,const AVMetadataConv *d_conv, + const AVMetadataConv *s_conv); + +/** + * Frees all the memory allocated for an AVMetadata struct. + */ +void av_metadata_free(AVMetadata **m); + + +/* packet functions */ + + +/** + * Allocates and reads the payload of a packet and initializes its + * fields with default values. + * + * @param pkt packet + * @param size desired payload size + * @return >0 (read size) if OK, AVERROR_xxx otherwise + */ +int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size); + + +/*************************************************/ +/* fractional numbers for exact pts handling */ + +/** + * The exact value of the fractional number is: 'val + num / den'. + * num is assumed to be 0 <= num < den. + */ +typedef struct AVFrac { + int64_t val, num, den; +} AVFrac; + +/*************************************************/ +/* input/output formats */ + +struct AVCodecTag; + +/** This structure contains the data a format has to probe a file. */ +typedef struct AVProbeData { + const char *filename; + unsigned char *buf; /**< Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero. */ + int buf_size; /**< Size of buf except extra allocated bytes */ +} AVProbeData; + +#define AVPROBE_SCORE_MAX 100 ///< maximum score, half of that is used for file-extension-based detection +#define AVPROBE_PADDING_SIZE 32 ///< extra allocated bytes at the end of the probe buffer + +typedef struct AVFormatParameters { + AVRational time_base; + int sample_rate; + int channels; + int width; + int height; + enum PixelFormat pix_fmt; + int channel; /**< Used to select DV channel. */ + const char *standard; /**< TV standard, NTSC, PAL, SECAM */ + unsigned int mpeg2ts_raw:1; /**< Force raw MPEG-2 transport stream output, if possible. */ + unsigned int mpeg2ts_compute_pcr:1; /**< Compute exact PCR for each transport + stream packet (only meaningful if + mpeg2ts_raw is TRUE). */ + unsigned int initial_pause:1; /**< Do not begin to play the stream + immediately (RTSP only). */ + unsigned int prealloced_context:1; +#if LIBAVFORMAT_VERSION_INT < (53<<16) + enum CodecID video_codec_id; + enum CodecID audio_codec_id; +#endif +} AVFormatParameters; + +//! Demuxer will use url_fopen, no opened file should be provided by the caller. +#define AVFMT_NOFILE 0x0001 +#define AVFMT_NEEDNUMBER 0x0002 /**< Needs '%d' in filename. */ +#define AVFMT_SHOW_IDS 0x0008 /**< Show format stream IDs numbers. */ +#define AVFMT_RAWPICTURE 0x0020 /**< Format wants AVPicture structure for + raw picture data. */ +#define AVFMT_GLOBALHEADER 0x0040 /**< Format wants global header. */ +#define AVFMT_NOTIMESTAMPS 0x0080 /**< Format does not need / have any timestamps. */ +#define AVFMT_GENERIC_INDEX 0x0100 /**< Use generic index building code. */ +#define AVFMT_TS_DISCONT 0x0200 /**< Format allows timestamp discontinuities. */ +#define AVFMT_VARIABLE_FPS 0x0400 /**< Format allows variable fps. */ +#define AVFMT_NODIMENSIONS 0x0800 /**< Format does not need width/height */ + +typedef struct AVOutputFormat { + const char *name; + /** + * Descriptive name for the format, meant to be more human-readable + * than name. You should use the NULL_IF_CONFIG_SMALL() macro + * to define it. + */ + const char *long_name; + const char *mime_type; + const char *extensions; /**< comma-separated filename extensions */ + /** size of private data so that it can be allocated in the wrapper */ + int priv_data_size; + /* output support */ + enum CodecID audio_codec; /**< default audio codec */ + enum CodecID video_codec; /**< default video codec */ + int (*write_header)(struct AVFormatContext *); + int (*write_packet)(struct AVFormatContext *, AVPacket *pkt); + int (*write_trailer)(struct AVFormatContext *); + /** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */ + int flags; + /** Currently only used to set pixel format if not YUV420P. */ + int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *); + int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, + AVPacket *in, int flush); + + /** + * List of supported codec_id-codec_tag pairs, ordered by "better + * choice first". The arrays are all terminated by CODEC_ID_NONE. + */ + const struct AVCodecTag * const *codec_tag; + + enum CodecID subtitle_codec; /**< default subtitle codec */ + + const AVMetadataConv *metadata_conv; + + /* private fields */ + struct AVOutputFormat *next; +} AVOutputFormat; + +typedef struct AVInputFormat { + const char *name; + /** + * Descriptive name for the format, meant to be more human-readable + * than name. You should use the NULL_IF_CONFIG_SMALL() macro + * to define it. + */ + const char *long_name; + /** Size of private data so that it can be allocated in the wrapper. */ + int priv_data_size; + /** + * Tell if a given file has a chance of being parsed as this format. + * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes + * big so you do not have to check for that unless you need more. + */ + int (*read_probe)(AVProbeData *); + /** Read the format header and initialize the AVFormatContext + structure. Return 0 if OK. 'ap' if non-NULL contains + additional parameters. Only used in raw format right + now. 'av_new_stream' should be called to create new streams. */ + int (*read_header)(struct AVFormatContext *, + AVFormatParameters *ap); + /** Read one packet and put it in 'pkt'. pts and flags are also + set. 'av_new_stream' can be called only if the flag + AVFMTCTX_NOHEADER is used. + @return 0 on success, < 0 on error. + When returning an error, pkt must not have been allocated + or must be freed before returning */ + int (*read_packet)(struct AVFormatContext *, AVPacket *pkt); + /** Close the stream. The AVFormatContext and AVStreams are not + freed by this function */ + int (*read_close)(struct AVFormatContext *); + +#if LIBAVFORMAT_VERSION_MAJOR < 53 + /** + * Seek to a given timestamp relative to the frames in + * stream component stream_index. + * @param stream_index Must not be -1. + * @param flags Selects which direction should be preferred if no exact + * match is available. + * @return >= 0 on success (but not necessarily the new offset) + */ + int (*read_seek)(struct AVFormatContext *, + int stream_index, int64_t timestamp, int flags); +#endif + /** + * Gets the next timestamp in stream[stream_index].time_base units. + * @return the timestamp or AV_NOPTS_VALUE if an error occurred + */ + int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index, + int64_t *pos, int64_t pos_limit); + /** Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. */ + int flags; + /** If extensions are defined, then no probe is done. You should + usually not use extension format guessing because it is not + reliable enough */ + const char *extensions; + /** General purpose read-only value that the format can use. */ + int value; + + /** Starts/resumes playing - only meaningful if using a network-based format + (RTSP). */ + int (*read_play)(struct AVFormatContext *); + + /** Pauses playing - only meaningful if using a network-based format + (RTSP). */ + int (*read_pause)(struct AVFormatContext *); + + const struct AVCodecTag * const *codec_tag; + + /** + * Seeks to timestamp ts. + * Seeking will be done so that the point from which all active streams + * can be presented successfully will be closest to ts and within min/max_ts. + * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. + */ + int (*read_seek2)(struct AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags); + + const AVMetadataConv *metadata_conv; + + /* private fields */ + struct AVInputFormat *next; +} AVInputFormat; + +enum AVStreamParseType { + AVSTREAM_PARSE_NONE, + AVSTREAM_PARSE_FULL, /**< full parsing and repack */ + AVSTREAM_PARSE_HEADERS, /**< Only parse headers, do not repack. */ + AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on a packet boundary */ +}; + +typedef struct AVIndexEntry { + int64_t pos; + int64_t timestamp; +#define AVINDEX_KEYFRAME 0x0001 + int flags:2; + int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs. 32 bytes due to possible 8-byte alignment). + int min_distance; /**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. */ +} AVIndexEntry; + +#define AV_DISPOSITION_DEFAULT 0x0001 +#define AV_DISPOSITION_DUB 0x0002 +#define AV_DISPOSITION_ORIGINAL 0x0004 +#define AV_DISPOSITION_COMMENT 0x0008 +#define AV_DISPOSITION_LYRICS 0x0010 +#define AV_DISPOSITION_KARAOKE 0x0020 + +/** + * Stream structure. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVStream) must not be used outside libav*. + */ +typedef struct AVStream { + int index; /**< stream index in AVFormatContext */ + int id; /**< format-specific stream ID */ + AVCodecContext *codec; /**< codec context */ + /** + * Real base framerate of the stream. + * This is the lowest framerate with which all timestamps can be + * represented accurately (it is the least common multiple of all + * framerates in the stream). Note, this value is just a guess! + * For example, if the time base is 1/90000 and all frames have either + * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1. + */ + AVRational r_frame_rate; + void *priv_data; + + /* internal data used in av_find_stream_info() */ + int64_t first_dts; + /** encoding: pts generation when outputting stream */ + struct AVFrac pts; + + /** + * This is the fundamental unit of time (in seconds) in terms + * of which frame timestamps are represented. For fixed-fps content, + * time base should be 1/framerate and timestamp increments should be 1. + */ + AVRational time_base; + int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */ + /* ffmpeg.c private use */ + int stream_copy; /**< If set, just copy stream. */ + enum AVDiscard discard; ///< Selects which packets can be discarded at will and do not need to be demuxed. + //FIXME move stuff to a flags field? + /** Quality, as it has been removed from AVCodecContext and put in AVVideoFrame. + * MN: dunno if that is the right place for it */ + float quality; + /** + * Decoding: pts of the first frame of the stream, in stream time base. + * Only set this if you are absolutely 100% sure that the value you set + * it to really is the pts of the first frame. + * This may be undefined (AV_NOPTS_VALUE). + * @note The ASF header does NOT contain a correct start_time the ASF + * demuxer must NOT set this. + */ + int64_t start_time; + /** + * Decoding: duration of the stream, in stream time base. + * If a source file does not specify a duration, but does specify + * a bitrate, this value will be estimated from bitrate and file size. + */ + int64_t duration; + +#if LIBAVFORMAT_VERSION_INT < (53<<16) + char language[4]; /** ISO 639-2/B 3-letter language code (empty string if undefined) */ +#endif + + /* av_read_frame() support */ + enum AVStreamParseType need_parsing; + struct AVCodecParserContext *parser; + + int64_t cur_dts; + int last_IP_duration; + int64_t last_IP_pts; + /* av_seek_frame() support */ + AVIndexEntry *index_entries; /**< Only used if the format does not + support seeking natively. */ + int nb_index_entries; + unsigned int index_entries_allocated_size; + + int64_t nb_frames; ///< number of frames in this stream if known or 0 + +#if LIBAVFORMAT_VERSION_INT < (53<<16) + int64_t unused[4+1]; + + char *filename; /**< source filename of the stream */ +#endif + + int disposition; /**< AV_DISPOSITION_* bit field */ + + AVProbeData probe_data; +#define MAX_REORDER_DELAY 16 + int64_t pts_buffer[MAX_REORDER_DELAY+1]; + + /** + * sample aspect ratio (0 if unknown) + * - encoding: Set by user. + * - decoding: Set by libavformat. + */ + AVRational sample_aspect_ratio; + + AVMetadata *metadata; + + /* av_read_frame() support */ + const uint8_t *cur_ptr; + int cur_len; + AVPacket cur_pkt; + + // Timestamp generation support: + /** + * Timestamp corresponding to the last dts sync point. + * + * Initialized when AVCodecParserContext.dts_sync_point >= 0 and + * a DTS is received from the underlying container. Otherwise set to + * AV_NOPTS_VALUE by default. + */ + int64_t reference_dts; + + /** + * Number of packets to buffer for codec probing + * NOT PART OF PUBLIC API + */ +#define MAX_PROBE_PACKETS 2500 + int probe_packets; + + /** + * last packet in packet_buffer for this stream when muxing. + * used internally, NOT PART OF PUBLIC API, dont read or write from outside of libav* + */ + struct AVPacketList *last_in_packet_buffer; + + /** + * Average framerate + */ + AVRational avg_frame_rate; + + /** + * Number of frames that have been demuxed during av_find_stream_info() + */ + int codec_info_nb_frames; +} AVStream; + +#define AV_PROGRAM_RUNNING 1 + +/** + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVProgram) must not be used outside libav*. + */ +typedef struct AVProgram { + int id; +#if LIBAVFORMAT_VERSION_INT < (53<<16) + char *provider_name; ///< network name for DVB streams + char *name; ///< service name for DVB streams +#endif + int flags; + enum AVDiscard discard; ///< selects which program to discard and which to feed to the caller + unsigned int *stream_index; + unsigned int nb_stream_indexes; + AVMetadata *metadata; +} AVProgram; + +#define AVFMTCTX_NOHEADER 0x0001 /**< signal that no header is present + (streams are added dynamically) */ + +typedef struct AVChapter { + int id; ///< unique ID to identify the chapter + AVRational time_base; ///< time base in which the start/end timestamps are specified + int64_t start, end; ///< chapter start/end time in time_base units +#if LIBAVFORMAT_VERSION_INT < (53<<16) + char *title; ///< chapter title +#endif + AVMetadata *metadata; +} AVChapter; + +#if LIBAVFORMAT_VERSION_MAJOR < 53 +#define MAX_STREAMS 20 +#else +#define MAX_STREAMS 100 +#endif + +/** + * Format I/O context. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVFormatContext) must not be used outside libav*. + */ +typedef struct AVFormatContext { + const AVClass *av_class; /**< Set by avformat_alloc_context. */ + /* Can only be iformat or oformat, not both at the same time. */ + struct AVInputFormat *iformat; + struct AVOutputFormat *oformat; + void *priv_data; + ByteIOContext *pb; + unsigned int nb_streams; + AVStream *streams[MAX_STREAMS]; + char filename[1024]; /**< input or output filename */ + /* stream info */ + int64_t timestamp; +#if LIBAVFORMAT_VERSION_INT < (53<<16) + char title[512]; + char author[512]; + char copyright[512]; + char comment[512]; + char album[512]; + int year; /**< ID3 year, 0 if none */ + int track; /**< track number, 0 if none */ + char genre[32]; /**< ID3 genre */ +#endif + + int ctx_flags; /**< Format-specific flags, see AVFMTCTX_xx */ + /* private data for pts handling (do not modify directly). */ + /** This buffer is only needed when packets were already buffered but + not decoded, for example to get the codec parameters in MPEG + streams. */ + struct AVPacketList *packet_buffer; + + /** Decoding: position of the first frame of the component, in + AV_TIME_BASE fractional seconds. NEVER set this value directly: + It is deduced from the AVStream values. */ + int64_t start_time; + /** Decoding: duration of the stream, in AV_TIME_BASE fractional + seconds. Only set this value if you know none of the individual stream + durations and also dont set any of them. This is deduced from the + AVStream values if not set. */ + int64_t duration; + /** decoding: total file size, 0 if unknown */ + int64_t file_size; + /** Decoding: total stream bitrate in bit/s, 0 if not + available. Never set it directly if the file_size and the + duration are known as FFmpeg can compute it automatically. */ + int bit_rate; + + /* av_read_frame() support */ + AVStream *cur_st; +#if LIBAVFORMAT_VERSION_INT < (53<<16) + const uint8_t *cur_ptr_deprecated; + int cur_len_deprecated; + AVPacket cur_pkt_deprecated; +#endif + + /* av_seek_frame() support */ + int64_t data_offset; /** offset of the first packet */ + int index_built; + + int mux_rate; + unsigned int packet_size; + int preload; + int max_delay; + +#define AVFMT_NOOUTPUTLOOP -1 +#define AVFMT_INFINITEOUTPUTLOOP 0 + /** number of times to loop output in formats that support it */ + int loop_output; + + int flags; +#define AVFMT_FLAG_GENPTS 0x0001 ///< Generate missing pts even if it requires parsing future frames. +#define AVFMT_FLAG_IGNIDX 0x0002 ///< Ignore index. +#define AVFMT_FLAG_NONBLOCK 0x0004 ///< Do not block when reading packets from input. +#define AVFMT_FLAG_IGNDTS 0x0008 ///< Ignore DTS on frames that contain both DTS & PTS +#define AVFMT_FLAG_NOFILLIN 0x0010 ///< Do not infer any values from other values, just return what is stored in the container +#define AVFMT_FLAG_NOPARSE 0x0020 ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled +#define AVFMT_FLAG_RTP_HINT 0x0040 ///< Add RTP hinting to the output file + + int loop_input; + /** decoding: size of data to probe; encoding: unused. */ + unsigned int probesize; + + /** + * Maximum time (in AV_TIME_BASE units) during which the input should + * be analyzed in av_find_stream_info(). + */ + int max_analyze_duration; + + const uint8_t *key; + int keylen; + + unsigned int nb_programs; + AVProgram **programs; + + /** + * Forced video codec_id. + * Demuxing: Set by user. + */ + enum CodecID video_codec_id; + /** + * Forced audio codec_id. + * Demuxing: Set by user. + */ + enum CodecID audio_codec_id; + /** + * Forced subtitle codec_id. + * Demuxing: Set by user. + */ + enum CodecID subtitle_codec_id; + + /** + * Maximum amount of memory in bytes to use for the index of each stream. + * If the index exceeds this size, entries will be discarded as + * needed to maintain a smaller size. This can lead to slower or less + * accurate seeking (depends on demuxer). + * Demuxers for which a full in-memory index is mandatory will ignore + * this. + * muxing : unused + * demuxing: set by user + */ + unsigned int max_index_size; + + /** + * Maximum amount of memory in bytes to use for buffering frames + * obtained from realtime capture devices. + */ + unsigned int max_picture_buffer; + + unsigned int nb_chapters; + AVChapter **chapters; + + /** + * Flags to enable debugging. + */ + int debug; +#define FF_FDEBUG_TS 0x0001 + + /** + * Raw packets from the demuxer, prior to parsing and decoding. + * This buffer is used for buffering packets until the codec can + * be identified, as parsing cannot be done without knowing the + * codec. + */ + struct AVPacketList *raw_packet_buffer; + struct AVPacketList *raw_packet_buffer_end; + + struct AVPacketList *packet_buffer_end; + + AVMetadata *metadata; + + /** + * Remaining size available for raw_packet_buffer, in bytes. + * NOT PART OF PUBLIC API + */ +#define RAW_PACKET_BUFFER_SIZE 2500000 + int raw_packet_buffer_remaining_size; + + /** + * Start time of the stream in real world time, in microseconds + * since the unix epoch (00:00 1st January 1970). That is, pts=0 + * in the stream was captured at this real world time. + * - encoding: Set by user. + * - decoding: Unused. + */ + int64_t start_time_realtime; +} AVFormatContext; + +typedef struct AVPacketList { + AVPacket pkt; + struct AVPacketList *next; +} AVPacketList; + +#if LIBAVFORMAT_VERSION_INT < (53<<16) +extern AVInputFormat *first_iformat; +extern AVOutputFormat *first_oformat; +#endif + +/** + * If f is NULL, returns the first registered input format, + * if f is non-NULL, returns the next registered input format after f + * or NULL if f is the last one. + */ +AVInputFormat *av_iformat_next(AVInputFormat *f); + +/** + * If f is NULL, returns the first registered output format, + * if f is non-NULL, returns the next registered output format after f + * or NULL if f is the last one. + */ +AVOutputFormat *av_oformat_next(AVOutputFormat *f); + +enum CodecID av_guess_image2_codec(const char *filename); + +/* XXX: Use automatic init with either ELF sections or C file parser */ +/* modules. */ + +/* utils.c */ +void av_register_input_format(AVInputFormat *format); +void av_register_output_format(AVOutputFormat *format); +#if LIBAVFORMAT_VERSION_MAJOR < 53 +attribute_deprecated AVOutputFormat *guess_stream_format(const char *short_name, + const char *filename, + const char *mime_type); + +/** + * @deprecated Use av_guess_format() instead. + */ +attribute_deprecated AVOutputFormat *guess_format(const char *short_name, + const char *filename, + const char *mime_type); +#endif + +/** + * Returns the output format in the list of registered output formats + * which best matches the provided parameters, or returns NULL if + * there is no match. + * + * @param short_name if non-NULL checks if short_name matches with the + * names of the registered formats + * @param filename if non-NULL checks if filename terminates with the + * extensions of the registered formats + * @param mime_type if non-NULL checks if mime_type matches with the + * MIME type of the registered formats + */ +AVOutputFormat *av_guess_format(const char *short_name, + const char *filename, + const char *mime_type); + +/** + * Guesses the codec ID based upon muxer and filename. + */ +enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, + const char *filename, const char *mime_type, + enum AVMediaType type); + +/** + * Sends a nice hexadecimal dump of a buffer to the specified file stream. + * + * @param f The file stream pointer where the dump should be sent to. + * @param buf buffer + * @param size buffer size + * + * @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log + */ +void av_hex_dump(FILE *f, uint8_t *buf, int size); + +/** + * Sends a nice hexadecimal dump of a buffer to the log. + * + * @param avcl A pointer to an arbitrary struct of which the first field is a + * pointer to an AVClass struct. + * @param level The importance level of the message, lower values signifying + * higher importance. + * @param buf buffer + * @param size buffer size + * + * @see av_hex_dump, av_pkt_dump, av_pkt_dump_log + */ +void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size); + +/** + * Sends a nice dump of a packet to the specified file stream. + * + * @param f The file stream pointer where the dump should be sent to. + * @param pkt packet to dump + * @param dump_payload True if the payload must be displayed, too. + */ +void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload); + +/** + * Sends a nice dump of a packet to the log. + * + * @param avcl A pointer to an arbitrary struct of which the first field is a + * pointer to an AVClass struct. + * @param level The importance level of the message, lower values signifying + * higher importance. + * @param pkt packet to dump + * @param dump_payload True if the payload must be displayed, too. + */ +void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload); + +/** + * Initializes libavformat and registers all the muxers, demuxers and + * protocols. If you do not call this function, then you can select + * exactly which formats you want to support. + * + * @see av_register_input_format() + * @see av_register_output_format() + * @see av_register_protocol() + */ +void av_register_all(void); + +/** + * Gets the CodecID for the given codec tag tag. + * If no codec id is found returns CODEC_ID_NONE. + * + * @param tags list of supported codec_id-codec_tag pairs, as stored + * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag + */ +enum CodecID av_codec_get_id(const struct AVCodecTag * const *tags, unsigned int tag); + +/** + * Gets the codec tag for the given codec id id. + * If no codec tag is found returns 0. + * + * @param tags list of supported codec_id-codec_tag pairs, as stored + * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag + */ +unsigned int av_codec_get_tag(const struct AVCodecTag * const *tags, enum CodecID id); + +/* media file input */ + +/** + * Finds AVInputFormat based on the short name of the input format. + */ +AVInputFormat *av_find_input_format(const char *short_name); + +/** + * Guesses the file format. + * + * @param is_opened Whether the file is already opened; determines whether + * demuxers with or without AVFMT_NOFILE are probed. + */ +AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened); + +/** + * Guesses the file format. + * + * @param is_opened Whether the file is already opened; determines whether + * demuxers with or without AVFMT_NOFILE are probed. + * @param score_max A probe score larger that this is required to accept a + * detection, the variable is set to the actual detection + * score afterwards. + * If the score is <= AVPROBE_SCORE_MAX / 4 it is recommended + * to retry with a larger probe buffer. + */ +AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max); + +/** + * Allocates all the structures needed to read an input stream. + * This does not open the needed codecs for decoding the stream[s]. + */ +int av_open_input_stream(AVFormatContext **ic_ptr, + ByteIOContext *pb, const char *filename, + AVInputFormat *fmt, AVFormatParameters *ap); + +/** + * Opens a media file as input. The codecs are not opened. Only the file + * header (if present) is read. + * + * @param ic_ptr The opened media file handle is put here. + * @param filename filename to open + * @param fmt If non-NULL, force the file format to use. + * @param buf_size optional buffer size (zero if default is OK) + * @param ap Additional parameters needed when opening the file + * (NULL if default). + * @return 0 if OK, AVERROR_xxx otherwise + */ +int av_open_input_file(AVFormatContext **ic_ptr, const char *filename, + AVInputFormat *fmt, + int buf_size, + AVFormatParameters *ap); + +#if LIBAVFORMAT_VERSION_MAJOR < 53 +/** + * @deprecated Use avformat_alloc_context() instead. + */ +attribute_deprecated AVFormatContext *av_alloc_format_context(void); +#endif + +/** + * Allocates an AVFormatContext. + * Can be freed with av_free() but do not forget to free everything you + * explicitly allocated as well! + */ +AVFormatContext *avformat_alloc_context(void); + +/** + * Reads packets of a media file to get stream information. This + * is useful for file formats with no headers such as MPEG. This + * function also computes the real framerate in case of MPEG-2 repeat + * frame mode. + * The logical file position is not changed by this function; + * examined packets may be buffered for later processing. + * + * @param ic media file handle + * @return >=0 if OK, AVERROR_xxx on error + * @todo Let the user decide somehow what information is needed so that + * we do not waste time getting stuff the user does not need. + */ +int av_find_stream_info(AVFormatContext *ic); + +/** + * Reads a transport packet from a media file. + * + * This function is obsolete and should never be used. + * Use av_read_frame() instead. + * + * @param s media file handle + * @param pkt is filled + * @return 0 if OK, AVERROR_xxx on error + */ +int av_read_packet(AVFormatContext *s, AVPacket *pkt); + +/** + * Returns the next frame of a stream. + * + * The returned packet is valid + * until the next av_read_frame() or until av_close_input_file() and + * must be freed with av_free_packet. For video, the packet contains + * exactly one frame. For audio, it contains an integer number of + * frames if each frame has a known fixed size (e.g. PCM or ADPCM + * data). If the audio frames have a variable size (e.g. MPEG audio), + * then it contains one frame. + * + * pkt->pts, pkt->dts and pkt->duration are always set to correct + * values in AVStream.time_base units (and guessed if the format cannot + * provide them). pkt->pts can be AV_NOPTS_VALUE if the video format + * has B-frames, so it is better to rely on pkt->dts if you do not + * decompress the payload. + * + * @return 0 if OK, < 0 on error or end of file + */ +int av_read_frame(AVFormatContext *s, AVPacket *pkt); + +/** + * Seeks to the keyframe at timestamp. + * 'timestamp' in 'stream_index'. + * @param stream_index If stream_index is (-1), a default + * stream is selected, and timestamp is automatically converted + * from AV_TIME_BASE units to the stream specific time_base. + * @param timestamp Timestamp in AVStream.time_base units + * or, if no stream is specified, in AV_TIME_BASE units. + * @param flags flags which select direction and seeking mode + * @return >= 0 on success + */ +int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, + int flags); + +/** + * Seeks to timestamp ts. + * Seeking will be done so that the point from which all active streams + * can be presented successfully will be closest to ts and within min/max_ts. + * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. + * + * If flags contain AVSEEK_FLAG_BYTE, then all timestamps are in bytes and + * are the file position (this may not be supported by all demuxers). + * If flags contain AVSEEK_FLAG_FRAME, then all timestamps are in frames + * in the stream with stream_index (this may not be supported by all demuxers). + * Otherwise all timestamps are in units of the stream selected by stream_index + * or if stream_index is -1, in AV_TIME_BASE units. + * If flags contain AVSEEK_FLAG_ANY, then non-keyframes are treated as + * keyframes (this may not be supported by all demuxers). + * + * @param stream_index index of the stream which is used as time base reference + * @param min_ts smallest acceptable timestamp + * @param ts target timestamp + * @param max_ts largest acceptable timestamp + * @param flags flags + * @return >=0 on success, error code otherwise + * + * @NOTE This is part of the new seek API which is still under construction. + * Thus do not use this yet. It may change at any time, do not expect + * ABI compatibility yet! + */ +int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags); + +/** + * Starts playing a network-based stream (e.g. RTSP stream) at the + * current position. + */ +int av_read_play(AVFormatContext *s); + +/** + * Pauses a network-based stream (e.g. RTSP stream). + * + * Use av_read_play() to resume it. + */ +int av_read_pause(AVFormatContext *s); + +/** + * Frees a AVFormatContext allocated by av_open_input_stream. + * @param s context to free + */ +void av_close_input_stream(AVFormatContext *s); + +/** + * Closes a media file (but not its codecs). + * + * @param s media file handle + */ +void av_close_input_file(AVFormatContext *s); + +/** + * Adds a new stream to a media file. + * + * Can only be called in the read_header() function. If the flag + * AVFMTCTX_NOHEADER is in the format context, then new streams + * can be added in read_packet too. + * + * @param s media file handle + * @param id file-format-dependent stream ID + */ +AVStream *av_new_stream(AVFormatContext *s, int id); +AVProgram *av_new_program(AVFormatContext *s, int id); + +/** + * Adds a new chapter. + * This function is NOT part of the public API + * and should ONLY be used by demuxers. + * + * @param s media file handle + * @param id unique ID for this chapter + * @param start chapter start time in time_base units + * @param end chapter end time in time_base units + * @param title chapter title + * + * @return AVChapter or NULL on error + */ +AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, + int64_t start, int64_t end, const char *title); + +/** + * Sets the pts for a given stream. + * + * @param s stream + * @param pts_wrap_bits number of bits effectively used by the pts + * (used for wrap control, 33 is the value for MPEG) + * @param pts_num numerator to convert to seconds (MPEG: 1) + * @param pts_den denominator to convert to seconds (MPEG: 90000) + */ +void av_set_pts_info(AVStream *s, int pts_wrap_bits, + unsigned int pts_num, unsigned int pts_den); + +#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward +#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes +#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non-keyframes +#define AVSEEK_FLAG_FRAME 8 ///< seeking based on frame number + +int av_find_default_stream_index(AVFormatContext *s); + +/** + * Gets the index for a specific timestamp. + * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond + * to the timestamp which is <= the requested one, if backward + * is 0, then it will be >= + * if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise + * @return < 0 if no such timestamp could be found + */ +int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags); + +/** + * Ensures the index uses less memory than the maximum specified in + * AVFormatContext.max_index_size by discarding entries if it grows + * too large. + * This function is not part of the public API and should only be called + * by demuxers. + */ +void ff_reduce_index(AVFormatContext *s, int stream_index); + +/** + * Adds an index entry into a sorted list. Updates the entry if the list + * already contains it. + * + * @param timestamp timestamp in the time base of the given stream + */ +int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, + int size, int distance, int flags); + +/** + * Does a binary search using av_index_search_timestamp() and + * AVCodec.read_timestamp(). + * This is not supposed to be called directly by a user application, + * but by demuxers. + * @param target_ts target timestamp in the time base of the given stream + * @param stream_index stream number + */ +int av_seek_frame_binary(AVFormatContext *s, int stream_index, + int64_t target_ts, int flags); + +/** + * Updates cur_dts of all streams based on the given timestamp and AVStream. + * + * Stream ref_st unchanged, others set cur_dts in their native time base. + * Only needed for timestamp wrapping or if (dts not set and pts!=dts). + * @param timestamp new dts expressed in time_base of param ref_st + * @param ref_st reference stream giving time_base of param timestamp + */ +void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp); + +/** + * Does a binary search using read_timestamp(). + * This is not supposed to be called directly by a user application, + * but by demuxers. + * @param target_ts target timestamp in the time base of the given stream + * @param stream_index stream number + */ +int64_t av_gen_search(AVFormatContext *s, int stream_index, + int64_t target_ts, int64_t pos_min, + int64_t pos_max, int64_t pos_limit, + int64_t ts_min, int64_t ts_max, + int flags, int64_t *ts_ret, + int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )); + +/** media file output */ +int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap); + +/** + * Allocates the stream private data and writes the stream header to an + * output media file. + * + * @param s media file handle + * @return 0 if OK, AVERROR_xxx on error + */ +int av_write_header(AVFormatContext *s); + +/** + * Writes a packet to an output media file. + * + * The packet shall contain one audio or video frame. + * The packet must be correctly interleaved according to the container + * specification, if not then av_interleaved_write_frame must be used. + * + * @param s media file handle + * @param pkt The packet, which contains the stream_index, buf/buf_size, + dts/pts, ... + * @return < 0 on error, = 0 if OK, 1 if end of stream wanted + */ +int av_write_frame(AVFormatContext *s, AVPacket *pkt); + +/** + * Writes a packet to an output media file ensuring correct interleaving. + * + * The packet must contain one audio or video frame. + * If the packets are already correctly interleaved, the application should + * call av_write_frame() instead as it is slightly faster. It is also important + * to keep in mind that completely non-interleaved input will need huge amounts + * of memory to interleave with this, so it is preferable to interleave at the + * demuxer level. + * + * @param s media file handle + * @param pkt The packet, which contains the stream_index, buf/buf_size, + dts/pts, ... + * @return < 0 on error, = 0 if OK, 1 if end of stream wanted + */ +int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt); + +/** + * Interleaves a packet per dts in an output media file. + * + * Packets with pkt->destruct == av_destruct_packet will be freed inside this + * function, so they cannot be used after it. Note that calling av_free_packet() + * on them is still safe. + * + * @param s media file handle + * @param out the interleaved packet will be output here + * @param in the input packet + * @param flush 1 if no further packets are available as input and all + * remaining packets should be output + * @return 1 if a packet was output, 0 if no packet could be output, + * < 0 if an error occurred + */ +int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, + AVPacket *pkt, int flush); + +/** + * Writes the stream trailer to an output media file and frees the + * file private data. + * + * May only be called after a successful call to av_write_header. + * + * @param s media file handle + * @return 0 if OK, AVERROR_xxx on error + */ +int av_write_trailer(AVFormatContext *s); + +void dump_format(AVFormatContext *ic, + int index, + const char *url, + int is_output); + +#if LIBAVFORMAT_VERSION_MAJOR < 53 +/** + * Parses width and height out of string str. + * @deprecated Use av_parse_video_frame_size instead. + */ +attribute_deprecated int parse_image_size(int *width_ptr, int *height_ptr, + const char *str); + +/** + * Converts framerate from a string to a fraction. + * @deprecated Use av_parse_video_frame_rate instead. + */ +attribute_deprecated int parse_frame_rate(int *frame_rate, int *frame_rate_base, + const char *arg); +#endif + +/** + * Parses datestr and returns a corresponding number of microseconds. + * @param datestr String representing a date or a duration. + * - If a date the syntax is: + * @code + * [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]} + * @endcode + * Time is local time unless Z is appended, in which case it is + * interpreted as UTC. + * If the year-month-day part is not specified it takes the current + * year-month-day. + * Returns the number of microseconds since 1st of January, 1970 up to + * the time of the parsed date or INT64_MIN if datestr cannot be + * successfully parsed. + * - If a duration the syntax is: + * @code + * [-]HH[:MM[:SS[.m...]]] + * [-]S+[.m...] + * @endcode + * Returns the number of microseconds contained in a time interval + * with the specified duration or INT64_MIN if datestr cannot be + * successfully parsed. + * @param duration Flag which tells how to interpret datestr, if + * not zero datestr is interpreted as a duration, otherwise as a + * date. + */ +int64_t parse_date(const char *datestr, int duration); + +/** Gets the current time in microseconds. */ +int64_t av_gettime(void); + +/* ffm-specific for ffserver */ +#define FFM_PACKET_SIZE 4096 +int64_t ffm_read_write_index(int fd); +int ffm_write_write_index(int fd, int64_t pos); +void ffm_set_write_index(AVFormatContext *s, int64_t pos, int64_t file_size); + +/** + * Attempts to find a specific tag in a URL. + * + * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done. + * Return 1 if found. + */ +int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info); + +/** + * Returns in 'buf' the path with '%d' replaced by a number. + * + * Also handles the '%0nd' format where 'n' is the total number + * of digits and '%%'. + * + * @param buf destination buffer + * @param buf_size destination buffer size + * @param path numbered sequence string + * @param number frame number + * @return 0 if OK, -1 on format error + */ +int av_get_frame_filename(char *buf, int buf_size, + const char *path, int number); + +/** + * Checks whether filename actually is a numbered sequence generator. + * + * @param filename possible numbered sequence string + * @return 1 if a valid numbered sequence string, 0 otherwise + */ +int av_filename_number_test(const char *filename); + +/** + * Generates an SDP for an RTP session. + * + * @param ac array of AVFormatContexts describing the RTP streams. If the + * array is composed by only one context, such context can contain + * multiple AVStreams (one AVStream per RTP stream). Otherwise, + * all the contexts in the array (an AVCodecContext per RTP stream) + * must contain only one AVStream. + * @param n_files number of AVCodecContexts contained in ac + * @param buff buffer where the SDP will be stored (must be allocated by + * the caller) + * @param size the size of the buffer + * @return 0 if OK, AVERROR_xxx on error + */ +int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size); + +/** + * Returns a positive value if the given filename has one of the given + * extensions, 0 otherwise. + * + * @param extensions a comma-separated list of filename extensions + */ +int av_match_ext(const char *filename, const char *extensions); + +#endif /* AVFORMAT_AVFORMAT_H */ diff --git a/include/libavformat/avio.h b/include/libavformat/avio.h new file mode 100644 index 00000000..9ffe9356 --- /dev/null +++ b/include/libavformat/avio.h @@ -0,0 +1,525 @@ +/* + * copyright (c) 2001 Fabrice Bellard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef AVFORMAT_AVIO_H +#define AVFORMAT_AVIO_H + +/** + * @file + * unbuffered I/O operations + * + * @warning This file has to be considered an internal but installed + * header, so it should not be directly included in your projects. + */ + +#include <stdint.h> + +#include "libavutil/common.h" + +/* unbuffered I/O */ + +/** + * URL Context. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(URLContext) must not be used outside libav*. + */ +typedef struct URLContext { +#if LIBAVFORMAT_VERSION_MAJOR >= 53 + const AVClass *av_class; ///< information for av_log(). Set by url_open(). +#endif + struct URLProtocol *prot; + int flags; + int is_streamed; /**< true if streamed (no seek possible), default = false */ + int max_packet_size; /**< if non zero, the stream is packetized with this max packet size */ + void *priv_data; + char *filename; /**< specified URL */ +} URLContext; + +typedef struct URLPollEntry { + URLContext *handle; + int events; + int revents; +} URLPollEntry; + +#define URL_RDONLY 0 +#define URL_WRONLY 1 +#define URL_RDWR 2 + +typedef int URLInterruptCB(void); + +/** + * Creates an URLContext for accessing to the resource indicated by + * url, and opens it using the URLProtocol up. + * + * @param puc pointer to the location where, in case of success, the + * function puts the pointer to the created URLContext + * @param flags flags which control how the resource indicated by url + * is to be opened + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + */ +int url_open_protocol (URLContext **puc, struct URLProtocol *up, + const char *url, int flags); + +/** + * Creates an URLContext for accessing to the resource indicated by + * url, and opens it. + * + * @param puc pointer to the location where, in case of success, the + * function puts the pointer to the created URLContext + * @param flags flags which control how the resource indicated by url + * is to be opened + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + */ +int url_open(URLContext **h, const char *url, int flags); + +/** + * Reads up to size bytes from the resource accessed by h, and stores + * the read bytes in buf. + * + * @return The number of bytes actually read, or a negative value + * corresponding to an AVERROR code in case of error. A value of zero + * indicates that it is not possible to read more from the accessed + * resource (except if the value of the size argument is also zero). + */ +int url_read(URLContext *h, unsigned char *buf, int size); + +/** + * Read as many bytes as possible (up to size), calling the + * read function multiple times if necessary. + * Will also retry if the read function returns AVERROR(EAGAIN). + * This makes special short-read handling in applications + * unnecessary, if the return value is < size then it is + * certain there was either an error or the end of file was reached. + */ +int url_read_complete(URLContext *h, unsigned char *buf, int size); +int url_write(URLContext *h, unsigned char *buf, int size); + +/** + * Changes the position that will be used by the next read/write + * operation on the resource accessed by h. + * + * @param pos specifies the new position to set + * @param whence specifies how pos should be interpreted, it must be + * one of SEEK_SET (seek from the beginning), SEEK_CUR (seek from the + * current position), SEEK_END (seek from the end), or AVSEEK_SIZE + * (return the filesize of the requested resource, pos is ignored). + * @return a negative value corresponding to an AVERROR code in case + * of failure, or the resulting file position, measured in bytes from + * the beginning of the file. You can use this feature together with + * SEEK_CUR to read the current file position. + */ +int64_t url_seek(URLContext *h, int64_t pos, int whence); + +/** + * Closes the resource accessed by the URLContext h, and frees the + * memory used by it. + * + * @return a negative value if an error condition occurred, 0 + * otherwise + */ +int url_close(URLContext *h); + +/** + * Returns a non-zero value if the resource indicated by url + * exists, 0 otherwise. + */ +int url_exist(const char *url); + +int64_t url_filesize(URLContext *h); + +/** + * Return the file descriptor associated with this URL. For RTP, this + * will return only the RTP file descriptor, not the RTCP file descriptor. + * To get both, use rtp_get_file_handles(). + * + * @return the file descriptor associated with this URL, or <0 on error. + */ +int url_get_file_handle(URLContext *h); + +/** + * Return the maximum packet size associated to packetized file + * handle. If the file is not packetized (stream like HTTP or file on + * disk), then 0 is returned. + * + * @param h file handle + * @return maximum packet size in bytes + */ +int url_get_max_packet_size(URLContext *h); +void url_get_filename(URLContext *h, char *buf, int buf_size); + +/** + * The callback is called in blocking functions to test regulary if + * asynchronous interruption is needed. AVERROR(EINTR) is returned + * in this case by the interrupted function. 'NULL' means no interrupt + * callback is given. + */ +void url_set_interrupt_cb(URLInterruptCB *interrupt_cb); + +/* not implemented */ +int url_poll(URLPollEntry *poll_table, int n, int timeout); + +/** + * Pause and resume playing - only meaningful if using a network streaming + * protocol (e.g. MMS). + * @param pause 1 for pause, 0 for resume + */ +int av_url_read_pause(URLContext *h, int pause); + +/** + * Seek to a given timestamp relative to some component stream. + * Only meaningful if using a network streaming protocol (e.g. MMS.). + * @param stream_index The stream index that the timestamp is relative to. + * If stream_index is (-1) the timestamp should be in AV_TIME_BASE + * units from the beginning of the presentation. + * If a stream_index >= 0 is used and the protocol does not support + * seeking based on component streams, the call will fail with ENOTSUP. + * @param timestamp timestamp in AVStream.time_base units + * or if there is no stream specified then in AV_TIME_BASE units. + * @param flags Optional combination of AVSEEK_FLAG_BACKWARD, AVSEEK_FLAG_BYTE + * and AVSEEK_FLAG_ANY. The protocol may silently ignore + * AVSEEK_FLAG_BACKWARD and AVSEEK_FLAG_ANY, but AVSEEK_FLAG_BYTE will + * fail with ENOTSUP if used and not supported. + * @return >= 0 on success + * @see AVInputFormat::read_seek + */ +int64_t av_url_read_seek(URLContext *h, int stream_index, + int64_t timestamp, int flags); + +/** + * Passing this as the "whence" parameter to a seek function causes it to + * return the filesize without seeking anywhere. Supporting this is optional. + * If it is not supported then the seek function will return <0. + */ +#define AVSEEK_SIZE 0x10000 + +/** + * Oring this flag as into the "whence" parameter to a seek function causes it to + * seek by any means (like reopening and linear reading) or other normally unreasonble + * means that can be extreemly slow. + * This may be ignored by the seek code. + */ +#define AVSEEK_FORCE 0x20000 + +typedef struct URLProtocol { + const char *name; + int (*url_open)(URLContext *h, const char *url, int flags); + int (*url_read)(URLContext *h, unsigned char *buf, int size); + int (*url_write)(URLContext *h, unsigned char *buf, int size); + int64_t (*url_seek)(URLContext *h, int64_t pos, int whence); + int (*url_close)(URLContext *h); + struct URLProtocol *next; + int (*url_read_pause)(URLContext *h, int pause); + int64_t (*url_read_seek)(URLContext *h, int stream_index, + int64_t timestamp, int flags); + int (*url_get_file_handle)(URLContext *h); +} URLProtocol; + +#if LIBAVFORMAT_VERSION_MAJOR < 53 +extern URLProtocol *first_protocol; +#endif + +extern URLInterruptCB *url_interrupt_cb; + +/** + * If protocol is NULL, returns the first registered protocol, + * if protocol is non-NULL, returns the next registered protocol after protocol, + * or NULL if protocol is the last one. + */ +URLProtocol *av_protocol_next(URLProtocol *p); + +#if LIBAVFORMAT_VERSION_MAJOR < 53 +/** + * @deprecated Use av_register_protocol() instead. + */ +attribute_deprecated int register_protocol(URLProtocol *protocol); +#endif + +/** + * Registers the URLProtocol protocol. + */ +int av_register_protocol(URLProtocol *protocol); + +/** + * Bytestream IO Context. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(ByteIOContext) must not be used outside libav*. + */ +typedef struct { + unsigned char *buffer; + int buffer_size; + unsigned char *buf_ptr, *buf_end; + void *opaque; + int (*read_packet)(void *opaque, uint8_t *buf, int buf_size); + int (*write_packet)(void *opaque, uint8_t *buf, int buf_size); + int64_t (*seek)(void *opaque, int64_t offset, int whence); + int64_t pos; /**< position in the file of the current buffer */ + int must_flush; /**< true if the next seek should flush */ + int eof_reached; /**< true if eof reached */ + int write_flag; /**< true if open for writing */ + int is_streamed; + int max_packet_size; + unsigned long checksum; + unsigned char *checksum_ptr; + unsigned long (*update_checksum)(unsigned long checksum, const uint8_t *buf, unsigned int size); + int error; ///< contains the error code or 0 if no error happened + int (*read_pause)(void *opaque, int pause); + int64_t (*read_seek)(void *opaque, int stream_index, + int64_t timestamp, int flags); +} ByteIOContext; + +int init_put_byte(ByteIOContext *s, + unsigned char *buffer, + int buffer_size, + int write_flag, + void *opaque, + int (*read_packet)(void *opaque, uint8_t *buf, int buf_size), + int (*write_packet)(void *opaque, uint8_t *buf, int buf_size), + int64_t (*seek)(void *opaque, int64_t offset, int whence)); +ByteIOContext *av_alloc_put_byte( + unsigned char *buffer, + int buffer_size, + int write_flag, + void *opaque, + int (*read_packet)(void *opaque, uint8_t *buf, int buf_size), + int (*write_packet)(void *opaque, uint8_t *buf, int buf_size), + int64_t (*seek)(void *opaque, int64_t offset, int whence)); + +void put_byte(ByteIOContext *s, int b); +void put_buffer(ByteIOContext *s, const unsigned char *buf, int size); +void put_le64(ByteIOContext *s, uint64_t val); +void put_be64(ByteIOContext *s, uint64_t val); +void put_le32(ByteIOContext *s, unsigned int val); +void put_be32(ByteIOContext *s, unsigned int val); +void put_le24(ByteIOContext *s, unsigned int val); +void put_be24(ByteIOContext *s, unsigned int val); +void put_le16(ByteIOContext *s, unsigned int val); +void put_be16(ByteIOContext *s, unsigned int val); +void put_tag(ByteIOContext *s, const char *tag); + +void put_strz(ByteIOContext *s, const char *buf); + +/** + * fseek() equivalent for ByteIOContext. + * @return new position or AVERROR. + */ +int64_t url_fseek(ByteIOContext *s, int64_t offset, int whence); + +/** + * Skip given number of bytes forward. + * @param offset number of bytes + */ +void url_fskip(ByteIOContext *s, int64_t offset); + +/** + * ftell() equivalent for ByteIOContext. + * @return position or AVERROR. + */ +int64_t url_ftell(ByteIOContext *s); + +/** + * Gets the filesize. + * @return filesize or AVERROR + */ +int64_t url_fsize(ByteIOContext *s); + +/** + * feof() equivalent for ByteIOContext. + * @return non zero if and only if end of file + */ +int url_feof(ByteIOContext *s); + +int url_ferror(ByteIOContext *s); + +int av_url_read_fpause(ByteIOContext *h, int pause); +int64_t av_url_read_fseek(ByteIOContext *h, int stream_index, + int64_t timestamp, int flags); + +#define URL_EOF (-1) +/** @note return URL_EOF (-1) if EOF */ +int url_fgetc(ByteIOContext *s); + +/** @warning currently size is limited */ +#ifdef __GNUC__ +int url_fprintf(ByteIOContext *s, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 2, 3))); +#else +int url_fprintf(ByteIOContext *s, const char *fmt, ...); +#endif + +/** @note unlike fgets, the EOL character is not returned and a whole + line is parsed. return NULL if first char read was EOF */ +char *url_fgets(ByteIOContext *s, char *buf, int buf_size); + +void put_flush_packet(ByteIOContext *s); + + +/** + * Reads size bytes from ByteIOContext into buf. + * @return number of bytes read or AVERROR + */ +int get_buffer(ByteIOContext *s, unsigned char *buf, int size); + +/** + * Reads size bytes from ByteIOContext into buf. + * This reads at most 1 packet. If that is not enough fewer bytes will be + * returned. + * @return number of bytes read or AVERROR + */ +int get_partial_buffer(ByteIOContext *s, unsigned char *buf, int size); + +/** @note return 0 if EOF, so you cannot use it if EOF handling is + necessary */ +int get_byte(ByteIOContext *s); +unsigned int get_le24(ByteIOContext *s); +unsigned int get_le32(ByteIOContext *s); +uint64_t get_le64(ByteIOContext *s); +unsigned int get_le16(ByteIOContext *s); + +char *get_strz(ByteIOContext *s, char *buf, int maxlen); +unsigned int get_be16(ByteIOContext *s); +unsigned int get_be24(ByteIOContext *s); +unsigned int get_be32(ByteIOContext *s); +uint64_t get_be64(ByteIOContext *s); + +uint64_t ff_get_v(ByteIOContext *bc); + +static inline int url_is_streamed(ByteIOContext *s) +{ + return s->is_streamed; +} + +/** + * Creates and initializes a ByteIOContext for accessing the + * resource referenced by the URLContext h. + * @note When the URLContext h has been opened in read+write mode, the + * ByteIOContext can be used only for writing. + * + * @param s Used to return the pointer to the created ByteIOContext. + * In case of failure the pointed to value is set to NULL. + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + */ +int url_fdopen(ByteIOContext **s, URLContext *h); + +/** @warning must be called before any I/O */ +int url_setbufsize(ByteIOContext *s, int buf_size); +#if LIBAVFORMAT_VERSION_MAJOR < 53 +/** Reset the buffer for reading or writing. + * @note Will drop any data currently in the buffer without transmitting it. + * @param flags URL_RDONLY to set up the buffer for reading, or URL_WRONLY + * to set up the buffer for writing. */ +int url_resetbuf(ByteIOContext *s, int flags); +#endif + +/** + * Rewinds the ByteIOContext using the specified buffer containing the first buf_size bytes of the file. + * Used after probing to avoid seeking. + * Joins buf and s->buffer, taking any overlap into consideration. + * @note s->buffer must overlap with buf or they can't be joined and the function fails + * @note This function is NOT part of the public API + * + * @param s The read-only ByteIOContext to rewind + * @param buf The probe buffer containing the first buf_size bytes of the file + * @param buf_size The size of buf + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + */ +int ff_rewind_with_probe_data(ByteIOContext *s, unsigned char *buf, int buf_size); + +/** + * Creates and initializes a ByteIOContext for accessing the + * resource indicated by url. + * @note When the resource indicated by url has been opened in + * read+write mode, the ByteIOContext can be used only for writing. + * + * @param s Used to return the pointer to the created ByteIOContext. + * In case of failure the pointed to value is set to NULL. + * @param flags flags which control how the resource indicated by url + * is to be opened + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code in case of failure + */ +int url_fopen(ByteIOContext **s, const char *url, int flags); + +int url_fclose(ByteIOContext *s); +URLContext *url_fileno(ByteIOContext *s); + +/** + * Return the maximum packet size associated to packetized buffered file + * handle. If the file is not packetized (stream like http or file on + * disk), then 0 is returned. + * + * @param s buffered file handle + * @return maximum packet size in bytes + */ +int url_fget_max_packet_size(ByteIOContext *s); + +int url_open_buf(ByteIOContext **s, uint8_t *buf, int buf_size, int flags); + +/** return the written or read size */ +int url_close_buf(ByteIOContext *s); + +/** + * Open a write only memory stream. + * + * @param s new IO context + * @return zero if no error. + */ +int url_open_dyn_buf(ByteIOContext **s); + +/** + * Open a write only packetized memory stream with a maximum packet + * size of 'max_packet_size'. The stream is stored in a memory buffer + * with a big endian 4 byte header giving the packet size in bytes. + * + * @param s new IO context + * @param max_packet_size maximum packet size (must be > 0) + * @return zero if no error. + */ +int url_open_dyn_packet_buf(ByteIOContext **s, int max_packet_size); + +/** + * Return the written size and a pointer to the buffer. The buffer + * must be freed with av_free(). + * @param s IO context + * @param pbuffer pointer to a byte buffer + * @return the length of the byte buffer + */ +int url_close_dyn_buf(ByteIOContext *s, uint8_t **pbuffer); + +unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, + unsigned int len); +unsigned long get_checksum(ByteIOContext *s); +void init_checksum(ByteIOContext *s, + unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), + unsigned long checksum); + +/* udp.c */ +int udp_set_remote_url(URLContext *h, const char *uri); +int udp_get_local_port(URLContext *h); +#if (LIBAVFORMAT_VERSION_MAJOR <= 52) +int udp_get_file_handle(URLContext *h); +#endif + +#endif /* AVFORMAT_AVIO_H */ diff --git a/include/libavutil/adler32.h b/include/libavutil/adler32.h new file mode 100644 index 00000000..9626c805 --- /dev/null +++ b/include/libavutil/adler32.h @@ -0,0 +1,30 @@ +/* + * copyright (c) 2006 Mans Rullgard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_ADLER32_H +#define AVUTIL_ADLER32_H + +#include <stdint.h> +#include "attributes.h" + +unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, + unsigned int len) av_pure; + +#endif /* AVUTIL_ADLER32_H */ diff --git a/include/libavutil/attributes.h b/include/libavutil/attributes.h new file mode 100644 index 00000000..da45234c --- /dev/null +++ b/include/libavutil/attributes.h @@ -0,0 +1,113 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Macro definitions for various function/variable attributes + */ + +#ifndef AVUTIL_ATTRIBUTES_H +#define AVUTIL_ATTRIBUTES_H + +#ifdef __GNUC__ +# define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y) +#else +# define AV_GCC_VERSION_AT_LEAST(x,y) 0 +#endif + +#ifndef av_always_inline +#if AV_GCC_VERSION_AT_LEAST(3,1) +# define av_always_inline __attribute__((always_inline)) inline +#else +# define av_always_inline inline +#endif +#endif + +#ifndef av_noinline +#if AV_GCC_VERSION_AT_LEAST(3,1) +# define av_noinline __attribute__((noinline)) +#else +# define av_noinline +#endif +#endif + +#ifndef av_pure +#if AV_GCC_VERSION_AT_LEAST(3,1) +# define av_pure __attribute__((pure)) +#else +# define av_pure +#endif +#endif + +#ifndef av_const +#if AV_GCC_VERSION_AT_LEAST(2,6) +# define av_const __attribute__((const)) +#else +# define av_const +#endif +#endif + +#ifndef av_cold +#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,3) +# define av_cold __attribute__((cold)) +#else +# define av_cold +#endif +#endif + +#ifndef av_flatten +#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,1) +# define av_flatten __attribute__((flatten)) +#else +# define av_flatten +#endif +#endif + +#ifndef attribute_deprecated +#if AV_GCC_VERSION_AT_LEAST(3,1) +# define attribute_deprecated __attribute__((deprecated)) +#else +# define attribute_deprecated +#endif +#endif + +#ifndef av_unused +#if defined(__GNUC__) +# define av_unused __attribute__((unused)) +#else +# define av_unused +#endif +#endif + +#ifndef av_uninit +#if defined(__GNUC__) && !defined(__ICC) +# define av_uninit(x) x=x +#else +# define av_uninit(x) x +#endif +#endif + +#ifdef __GNUC__ +# define av_builtin_constant_p __builtin_constant_p +#else +# define av_builtin_constant_p(x) 0 +#endif + +#endif /* AVUTIL_ATTRIBUTES_H */ diff --git a/include/libavutil/avconfig.h b/include/libavutil/avconfig.h new file mode 100644 index 00000000..b028bb4f --- /dev/null +++ b/include/libavutil/avconfig.h @@ -0,0 +1,5 @@ +/* Generated by ffconf */ +#ifndef AVUTIL_AVCONFIG_H +#define AVUTIL_AVCONFIG_H +#define AV_HAVE_BIGENDIAN 0 +#endif /* AVUTIL_AVCONFIG_H */ diff --git a/include/libavutil/avstring.h b/include/libavutil/avstring.h new file mode 100644 index 00000000..01c2391b --- /dev/null +++ b/include/libavutil/avstring.h @@ -0,0 +1,117 @@ +/* + * Copyright (c) 2007 Mans Rullgard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_AVSTRING_H +#define AVUTIL_AVSTRING_H + +#include <stddef.h> + +/** + * Return non-zero if pfx is a prefix of str. If it is, *ptr is set to + * the address of the first character in str after the prefix. + * + * @param str input string + * @param pfx prefix to test + * @param ptr updated if the prefix is matched inside str + * @return non-zero if the prefix matches, zero otherwise + */ +int av_strstart(const char *str, const char *pfx, const char **ptr); + +/** + * Return non-zero if pfx is a prefix of str independent of case. If + * it is, *ptr is set to the address of the first character in str + * after the prefix. + * + * @param str input string + * @param pfx prefix to test + * @param ptr updated if the prefix is matched inside str + * @return non-zero if the prefix matches, zero otherwise + */ +int av_stristart(const char *str, const char *pfx, const char **ptr); + +/** + * Locate the first case-independent occurrence in the string haystack + * of the string needle. A zero-length string needle is considered to + * match at the start of haystack. + * + * This function is a case-insensitive version of the standard strstr(). + * + * @param haystack string to search in + * @param needle string to search for + * @return pointer to the located match within haystack + * or a null pointer if no match + */ +char *av_stristr(const char *haystack, const char *needle); + +/** + * Copy the string src to dst, but no more than size - 1 bytes, and + * null-terminate dst. + * + * This function is the same as BSD strlcpy(). + * + * @param dst destination buffer + * @param src source string + * @param size size of destination buffer + * @return the length of src + * + * WARNING: since the return value is the length of src, src absolutely + * _must_ be a properly 0-terminated string, otherwise this will read beyond + * the end of the buffer and possibly crash. + */ +size_t av_strlcpy(char *dst, const char *src, size_t size); + +/** + * Append the string src to the string dst, but to a total length of + * no more than size - 1 bytes, and null-terminate dst. + * + * This function is similar to BSD strlcat(), but differs when + * size <= strlen(dst). + * + * @param dst destination buffer + * @param src source string + * @param size size of destination buffer + * @return the total length of src and dst + * + * WARNING: since the return value use the length of src and dst, these absolutely + * _must_ be a properly 0-terminated strings, otherwise this will read beyond + * the end of the buffer and possibly crash. + */ +size_t av_strlcat(char *dst, const char *src, size_t size); + +/** + * Append output to a string, according to a format. Never write out of + * the destination buffer, and always put a terminating 0 within + * the buffer. + * @param dst destination buffer (string to which the output is + * appended) + * @param size total size of the destination buffer + * @param fmt printf-compatible format string, specifying how the + * following parameters are used + * @return the length of the string that would have been generated + * if enough space had been available + */ +size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...); + +/** + * Convert a number to a av_malloced string. + */ +char *av_d2str(double d); + +#endif /* AVUTIL_AVSTRING_H */ diff --git a/include/libavutil/avutil.h b/include/libavutil/avutil.h new file mode 100644 index 00000000..e9e07b92 --- /dev/null +++ b/include/libavutil/avutil.h @@ -0,0 +1,89 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_AVUTIL_H +#define AVUTIL_AVUTIL_H + +/** + * @file + * external API header + */ + + +#define AV_STRINGIFY(s) AV_TOSTRING(s) +#define AV_TOSTRING(s) #s + +#define AV_GLUE(a, b) a ## b +#define AV_JOIN(a, b) AV_GLUE(a, b) + +#define AV_PRAGMA(s) _Pragma(#s) + +#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c) +#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c +#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c) + +#define LIBAVUTIL_VERSION_MAJOR 50 +#define LIBAVUTIL_VERSION_MINOR 15 +#define LIBAVUTIL_VERSION_MICRO 1 + +#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ + LIBAVUTIL_VERSION_MINOR, \ + LIBAVUTIL_VERSION_MICRO) +#define LIBAVUTIL_VERSION AV_VERSION(LIBAVUTIL_VERSION_MAJOR, \ + LIBAVUTIL_VERSION_MINOR, \ + LIBAVUTIL_VERSION_MICRO) +#define LIBAVUTIL_BUILD LIBAVUTIL_VERSION_INT + +#define LIBAVUTIL_IDENT "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION) + +/** + * Returns the LIBAVUTIL_VERSION_INT constant. + */ +unsigned avutil_version(void); + +/** + * Returns the libavutil build-time configuration. + */ +const char *avutil_configuration(void); + +/** + * Returns the libavutil license. + */ +const char *avutil_license(void); + +enum AVMediaType { + AVMEDIA_TYPE_UNKNOWN = -1, + AVMEDIA_TYPE_VIDEO, + AVMEDIA_TYPE_AUDIO, + AVMEDIA_TYPE_DATA, + AVMEDIA_TYPE_SUBTITLE, + AVMEDIA_TYPE_ATTACHMENT, + AVMEDIA_TYPE_NB +}; + +#include "common.h" +#include "error.h" +#include "mathematics.h" +#include "rational.h" +#include "intfloat_readwrite.h" +#include "log.h" +#include "pixfmt.h" + +#endif /* AVUTIL_AVUTIL_H */ diff --git a/include/libavutil/base64.h b/include/libavutil/base64.h new file mode 100644 index 00000000..103860ef --- /dev/null +++ b/include/libavutil/base64.h @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com) + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_BASE64_H +#define AVUTIL_BASE64_H + +#include <stdint.h> + +/** + * Decodes the base64-encoded string in in and puts the decoded + * data in out. + * + * @param out_size size in bytes of the out buffer, it should be at + * least 3/4 of the length of in + * @return the number of bytes written, or a negative value in case of + * error + */ +int av_base64_decode(uint8_t *out, const char *in, int out_size); + +/** + * Encodes in base64 the data in in and puts the resulting string + * in out. + * + * @param out_size size in bytes of the out string, it should be at + * least ((in_size + 2) / 3) * 4 + 1 + * @param in_size size in bytes of the in buffer + * @return the string containing the encoded data, or NULL in case of + * error + */ +char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size); + +#endif /* AVUTIL_BASE64_H */ diff --git a/include/libavutil/common.h b/include/libavutil/common.h new file mode 100644 index 00000000..4aa00a99 --- /dev/null +++ b/include/libavutil/common.h @@ -0,0 +1,308 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * common internal and external API header + */ + +#ifndef AVUTIL_COMMON_H +#define AVUTIL_COMMON_H + +#include <ctype.h> +#include <errno.h> +#include <inttypes.h> +#include <limits.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "attributes.h" + +//rounded division & shift +#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b)) +/* assume b>0 */ +#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b)) +#define FFABS(a) ((a) >= 0 ? (a) : (-(a))) +#define FFSIGN(a) ((a) > 0 ? 1 : -1) + +#define FFMAX(a,b) ((a) > (b) ? (a) : (b)) +#define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c) +#define FFMIN(a,b) ((a) > (b) ? (b) : (a)) +#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c) + +#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0) +#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0])) +#define FFALIGN(x, a) (((x)+(a)-1)&~((a)-1)) + +/* misc math functions */ +extern const uint8_t ff_log2_tab[256]; + +extern const uint8_t av_reverse[256]; + +static inline av_const int av_log2_c(unsigned int v) +{ + int n = 0; + if (v & 0xffff0000) { + v >>= 16; + n += 16; + } + if (v & 0xff00) { + v >>= 8; + n += 8; + } + n += ff_log2_tab[v]; + + return n; +} + +static inline av_const int av_log2_16bit_c(unsigned int v) +{ + int n = 0; + if (v & 0xff00) { + v >>= 8; + n += 8; + } + n += ff_log2_tab[v]; + + return n; +} + +#ifdef HAVE_AV_CONFIG_H +# include "config.h" +# include "intmath.h" +#endif + +#ifndef av_log2 +# define av_log2 av_log2_c +#endif +#ifndef av_log2_16bit +# define av_log2_16bit av_log2_16bit_c +#endif + +/** + * Clips a signed integer value into the amin-amax range. + * @param a value to clip + * @param amin minimum value of the clip range + * @param amax maximum value of the clip range + * @return clipped value + */ +static inline av_const int av_clip(int a, int amin, int amax) +{ + if (a < amin) return amin; + else if (a > amax) return amax; + else return a; +} + +/** + * Clips a signed integer value into the 0-255 range. + * @param a value to clip + * @return clipped value + */ +static inline av_const uint8_t av_clip_uint8(int a) +{ + if (a&(~0xFF)) return (-a)>>31; + else return a; +} + +/** + * Clips a signed integer value into the 0-65535 range. + * @param a value to clip + * @return clipped value + */ +static inline av_const uint16_t av_clip_uint16(int a) +{ + if (a&(~0xFFFF)) return (-a)>>31; + else return a; +} + +/** + * Clips a signed integer value into the -32768,32767 range. + * @param a value to clip + * @return clipped value + */ +static inline av_const int16_t av_clip_int16(int a) +{ + if ((a+0x8000) & ~0xFFFF) return (a>>31) ^ 0x7FFF; + else return a; +} + +/** + * Clips a signed 64-bit integer value into the -2147483648,2147483647 range. + * @param a value to clip + * @return clipped value + */ +static inline av_const int32_t av_clipl_int32(int64_t a) +{ + if ((a+0x80000000u) & ~UINT64_C(0xFFFFFFFF)) return (a>>63) ^ 0x7FFFFFFF; + else return a; +} + +/** + * Clips a float value into the amin-amax range. + * @param a value to clip + * @param amin minimum value of the clip range + * @param amax maximum value of the clip range + * @return clipped value + */ +static inline av_const float av_clipf(float a, float amin, float amax) +{ + if (a < amin) return amin; + else if (a > amax) return amax; + else return a; +} + +/** Computes ceil(log2(x)). + * @param x value used to compute ceil(log2(x)) + * @return computed ceiling of log2(x) + */ +static inline av_const int av_ceil_log2(int x) +{ + return av_log2((x - 1) << 1); +} + +#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24)) +#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24)) + +/*! + * \def GET_UTF8(val, GET_BYTE, ERROR) + * Converts a UTF-8 character (up to 4 bytes long) to its 32-bit UCS-4 encoded form + * \param val is the output and should be of type uint32_t. It holds the converted + * UCS-4 character and should be a left value. + * \param GET_BYTE gets UTF-8 encoded bytes from any proper source. It can be + * a function or a statement whose return value or evaluated value is of type + * uint8_t. It will be executed up to 4 times for values in the valid UTF-8 range, + * and up to 7 times in the general case. + * \param ERROR action that should be taken when an invalid UTF-8 byte is returned + * from GET_BYTE. It should be a statement that jumps out of the macro, + * like exit(), goto, return, break, or continue. + */ +#define GET_UTF8(val, GET_BYTE, ERROR)\ + val= GET_BYTE;\ + {\ + int ones= 7 - av_log2(val ^ 255);\ + if(ones==1)\ + ERROR\ + val&= 127>>ones;\ + while(--ones > 0){\ + int tmp= GET_BYTE - 128;\ + if(tmp>>6)\ + ERROR\ + val= (val<<6) + tmp;\ + }\ + } + +/*! + * \def GET_UTF16(val, GET_16BIT, ERROR) + * Converts a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form + * \param val is the output and should be of type uint32_t. It holds the converted + * UCS-4 character and should be a left value. + * \param GET_16BIT gets two bytes of UTF-16 encoded data converted to native endianness. + * It can be a function or a statement whose return value or evaluated value is of type + * uint16_t. It will be executed up to 2 times. + * \param ERROR action that should be taken when an invalid UTF-16 surrogate is + * returned from GET_BYTE. It should be a statement that jumps out of the macro, + * like exit(), goto, return, break, or continue. + */ +#define GET_UTF16(val, GET_16BIT, ERROR)\ + val = GET_16BIT;\ + {\ + unsigned int hi = val - 0xD800;\ + if (hi < 0x800) {\ + val = GET_16BIT - 0xDC00;\ + if (val > 0x3FFU || hi > 0x3FFU)\ + ERROR\ + val += (hi<<10) + 0x10000;\ + }\ + }\ + +/*! + * \def PUT_UTF8(val, tmp, PUT_BYTE) + * Converts a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long). + * \param val is an input-only argument and should be of type uint32_t. It holds + * a UCS-4 encoded Unicode character that is to be converted to UTF-8. If + * val is given as a function it is executed only once. + * \param tmp is a temporary variable and should be of type uint8_t. It + * represents an intermediate value during conversion that is to be + * output by PUT_BYTE. + * \param PUT_BYTE writes the converted UTF-8 bytes to any proper destination. + * It could be a function or a statement, and uses tmp as the input byte. + * For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be + * executed up to 4 times for values in the valid UTF-8 range and up to + * 7 times in the general case, depending on the length of the converted + * Unicode character. + */ +#define PUT_UTF8(val, tmp, PUT_BYTE)\ + {\ + int bytes, shift;\ + uint32_t in = val;\ + if (in < 0x80) {\ + tmp = in;\ + PUT_BYTE\ + } else {\ + bytes = (av_log2(in) + 4) / 5;\ + shift = (bytes - 1) * 6;\ + tmp = (256 - (256 >> bytes)) | (in >> shift);\ + PUT_BYTE\ + while (shift >= 6) {\ + shift -= 6;\ + tmp = 0x80 | ((in >> shift) & 0x3f);\ + PUT_BYTE\ + }\ + }\ + } + +/*! + * \def PUT_UTF16(val, tmp, PUT_16BIT) + * Converts a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes). + * \param val is an input-only argument and should be of type uint32_t. It holds + * a UCS-4 encoded Unicode character that is to be converted to UTF-16. If + * val is given as a function it is executed only once. + * \param tmp is a temporary variable and should be of type uint16_t. It + * represents an intermediate value during conversion that is to be + * output by PUT_16BIT. + * \param PUT_16BIT writes the converted UTF-16 data to any proper destination + * in desired endianness. It could be a function or a statement, and uses tmp + * as the input byte. For example, PUT_BYTE could be "*output++ = tmp;" + * PUT_BYTE will be executed 1 or 2 times depending on input character. + */ +#define PUT_UTF16(val, tmp, PUT_16BIT)\ + {\ + uint32_t in = val;\ + if (in < 0x10000) {\ + tmp = in;\ + PUT_16BIT\ + } else {\ + tmp = 0xD800 | ((in - 0x10000) >> 10);\ + PUT_16BIT\ + tmp = 0xDC00 | ((in - 0x10000) & 0x3FF);\ + PUT_16BIT\ + }\ + }\ + + + +#include "mem.h" + +#ifdef HAVE_AV_CONFIG_H +# include "internal.h" +#endif /* HAVE_AV_CONFIG_H */ + +#endif /* AVUTIL_COMMON_H */ diff --git a/include/libavutil/crc.h b/include/libavutil/crc.h new file mode 100644 index 00000000..6c0baab5 --- /dev/null +++ b/include/libavutil/crc.h @@ -0,0 +1,44 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_CRC_H +#define AVUTIL_CRC_H + +#include <stdint.h> +#include <stddef.h> +#include "attributes.h" + +typedef uint32_t AVCRC; + +typedef enum { + AV_CRC_8_ATM, + AV_CRC_16_ANSI, + AV_CRC_16_CCITT, + AV_CRC_32_IEEE, + AV_CRC_32_IEEE_LE, /*< reversed bitorder version of AV_CRC_32_IEEE */ + AV_CRC_MAX, /*< Not part of public API! Do not use outside libavutil. */ +}AVCRCId; + +int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size); +const AVCRC *av_crc_get_table(AVCRCId crc_id); +uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length) av_pure; + +#endif /* AVUTIL_CRC_H */ + diff --git a/include/libavutil/error.h b/include/libavutil/error.h new file mode 100644 index 00000000..13a9a359 --- /dev/null +++ b/include/libavutil/error.h @@ -0,0 +1,72 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * error code definitions + */ + +#ifndef AVUTIL_ERROR_H +#define AVUTIL_ERROR_H + +#include <errno.h> +#include "avutil.h" + +/* error handling */ +#if EDOM > 0 +#define AVERROR(e) (-(e)) ///< Returns a negative error code from a POSIX error code, to return from library functions. +#define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value. +#else +/* Some platforms have E* and errno already negated. */ +#define AVERROR(e) (e) +#define AVUNERROR(e) (e) +#endif + +#if LIBAVUTIL_VERSION_MAJOR < 51 +#define AVERROR_INVALIDDATA AVERROR(EINVAL) ///< Invalid data found when processing input +#define AVERROR_IO AVERROR(EIO) ///< I/O error +#define AVERROR_NOENT AVERROR(ENOENT) ///< No such file or directory +#define AVERROR_NOFMT AVERROR(EILSEQ) ///< Unknown format +#define AVERROR_NOMEM AVERROR(ENOMEM) ///< Not enough memory +#define AVERROR_NOTSUPP AVERROR(ENOSYS) ///< Operation not supported +#define AVERROR_NUMEXPECTED AVERROR(EDOM) ///< Number syntax expected in filename +#define AVERROR_UNKNOWN AVERROR(EINVAL) ///< Unknown error +#endif + +#define AVERROR_EOF AVERROR(EPIPE) ///< End of file + +#define AVERROR_PATCHWELCOME (-MKTAG('P','A','W','E')) ///< Not yet implemented in FFmpeg, patches welcome + +#if LIBAVUTIL_VERSION_MAJOR > 50 +#define AVERROR_INVALIDDATA (-MKTAG('I','N','D','A')) ///< Invalid data found when processing input +#define AVERROR_NUMEXPECTED (-MKTAG('N','U','E','X')) ///< Number syntax expected in filename +#endif + +/** + * Puts a description of the AVERROR code errnum in errbuf. + * In case of failure the global variable errno is set to indicate the + * error. Even in case of failure av_strerror() will print a generic + * error message indicating the errnum provided to errbuf. + * + * @param errbuf_size the size in bytes of errbuf + * @return 0 on success, a negative value if a description for errnum + * cannot be found + */ +int av_strerror(int errnum, char *errbuf, size_t errbuf_size); + +#endif /* AVUTIL_ERROR_H */ diff --git a/include/libavutil/fifo.h b/include/libavutil/fifo.h new file mode 100644 index 00000000..fb1ed47f --- /dev/null +++ b/include/libavutil/fifo.h @@ -0,0 +1,116 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * a very simple circular buffer FIFO implementation + */ + +#ifndef AVUTIL_FIFO_H +#define AVUTIL_FIFO_H + +#include <stdint.h> + +typedef struct AVFifoBuffer { + uint8_t *buffer; + uint8_t *rptr, *wptr, *end; + uint32_t rndx, wndx; +} AVFifoBuffer; + +/** + * Initializes an AVFifoBuffer. + * @param size of FIFO + * @return AVFifoBuffer or NULL in case of memory allocation failure + */ +AVFifoBuffer *av_fifo_alloc(unsigned int size); + +/** + * Frees an AVFifoBuffer. + * @param *f AVFifoBuffer to free + */ +void av_fifo_free(AVFifoBuffer *f); + +/** + * Resets the AVFifoBuffer to the state right after av_fifo_alloc, in particular it is emptied. + * @param *f AVFifoBuffer to reset + */ +void av_fifo_reset(AVFifoBuffer *f); + +/** + * Returns the amount of data in bytes in the AVFifoBuffer, that is the + * amount of data you can read from it. + * @param *f AVFifoBuffer to read from + * @return size + */ +int av_fifo_size(AVFifoBuffer *f); + +/** + * Returns the amount of space in bytes in the AVFifoBuffer, that is the + * amount of data you can write into it. + * @param *f AVFifoBuffer to write into + * @return size + */ +int av_fifo_space(AVFifoBuffer *f); + +/** + * Feeds data from an AVFifoBuffer to a user-supplied callback. + * @param *f AVFifoBuffer to read from + * @param buf_size number of bytes to read + * @param *func generic read function + * @param *dest data destination + */ +int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void (*func)(void*, void*, int)); + +/** + * Feeds data from a user-supplied callback to an AVFifoBuffer. + * @param *f AVFifoBuffer to write to + * @param *src data source; non-const since it may be used as a + * modifiable context by the function defined in func + * @param size number of bytes to write + * @param *func generic write function; the first parameter is src, + * the second is dest_buf, the third is dest_buf_size. + * func must return the number of bytes written to dest_buf, or <= 0 to + * indicate no more data available to write. + * If func is NULL, src is interpreted as a simple byte array for source data. + * @return the number of bytes written to the FIFO + */ +int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int)); + +/** + * Resizes an AVFifoBuffer. + * @param *f AVFifoBuffer to resize + * @param size new AVFifoBuffer size in bytes + * @return <0 for failure, >=0 otherwise + */ +int av_fifo_realloc2(AVFifoBuffer *f, unsigned int size); + +/** + * Reads and discards the specified amount of data from an AVFifoBuffer. + * @param *f AVFifoBuffer to read from + * @param size amount of data to read in bytes + */ +void av_fifo_drain(AVFifoBuffer *f, int size); + +static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs) +{ + uint8_t *ptr = f->rptr + offs; + if (ptr >= f->end) + ptr -= f->end - f->buffer; + return *ptr; +} +#endif /* AVUTIL_FIFO_H */ diff --git a/include/libavutil/intfloat_readwrite.h b/include/libavutil/intfloat_readwrite.h new file mode 100644 index 00000000..1b80fc6e --- /dev/null +++ b/include/libavutil/intfloat_readwrite.h @@ -0,0 +1,40 @@ +/* + * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_INTFLOAT_READWRITE_H +#define AVUTIL_INTFLOAT_READWRITE_H + +#include <stdint.h> +#include "attributes.h" + +/* IEEE 80 bits extended float */ +typedef struct AVExtFloat { + uint8_t exponent[2]; + uint8_t mantissa[8]; +} AVExtFloat; + +double av_int2dbl(int64_t v) av_const; +float av_int2flt(int32_t v) av_const; +double av_ext2dbl(const AVExtFloat ext) av_const; +int64_t av_dbl2int(double d) av_const; +int32_t av_flt2int(float d) av_const; +AVExtFloat av_dbl2ext(double d) av_const; + +#endif /* AVUTIL_INTFLOAT_READWRITE_H */ diff --git a/include/libavutil/log.h b/include/libavutil/log.h new file mode 100644 index 00000000..1c3e4901 --- /dev/null +++ b/include/libavutil/log.h @@ -0,0 +1,123 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_LOG_H +#define AVUTIL_LOG_H + +#include <stdarg.h> +#include "avutil.h" + +/** + * Describes the class of an AVClass context structure. That is an + * arbitrary struct of which the first field is a pointer to an + * AVClass struct (e.g. AVCodecContext, AVFormatContext etc.). + */ +typedef struct { + /** + * The name of the class; usually it is the same name as the + * context structure type to which the AVClass is associated. + */ + const char* class_name; + + /** + * A pointer to a function which returns the name of a context + * instance ctx associated with the class. + */ + const char* (*item_name)(void* ctx); + + /** + * a pointer to the first option specified in the class if any or NULL + * + * @see av_set_default_options() + */ + const struct AVOption *option; + + /** + * LIBAVUTIL_VERSION with which this structure was created. + * This is used to allow fields to be added without requiring major + * version bumps everywhere. + */ + + int version; +} AVClass; + +/* av_log API */ + +#define AV_LOG_QUIET -8 + +/** + * Something went really wrong and we will crash now. + */ +#define AV_LOG_PANIC 0 + +/** + * Something went wrong and recovery is not possible. + * For example, no header was found for a format which depends + * on headers or an illegal combination of parameters is used. + */ +#define AV_LOG_FATAL 8 + +/** + * Something went wrong and cannot losslessly be recovered. + * However, not all future data is affected. + */ +#define AV_LOG_ERROR 16 + +/** + * Something somehow does not look correct. This may or may not + * lead to problems. An example would be the use of '-vstrict -2'. + */ +#define AV_LOG_WARNING 24 + +#define AV_LOG_INFO 32 +#define AV_LOG_VERBOSE 40 + +/** + * Stuff which is only useful for libav* developers. + */ +#define AV_LOG_DEBUG 48 + +/** + * Sends the specified message to the log if the level is less than or equal + * to the current av_log_level. By default, all logging messages are sent to + * stderr. This behavior can be altered by setting a different av_vlog callback + * function. + * + * @param avcl A pointer to an arbitrary struct of which the first field is a + * pointer to an AVClass struct. + * @param level The importance level of the message, lower values signifying + * higher importance. + * @param fmt The format string (printf-compatible) that specifies how + * subsequent arguments are converted to output. + * @see av_vlog + */ +#ifdef __GNUC__ +void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4))); +#else +void av_log(void*, int level, const char *fmt, ...); +#endif + +void av_vlog(void*, int level, const char *fmt, va_list); +int av_log_get_level(void); +void av_log_set_level(int); +void av_log_set_callback(void (*)(void*, int, const char*, va_list)); +void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl); + +#endif /* AVUTIL_LOG_H */ diff --git a/include/libavutil/lzo.h b/include/libavutil/lzo.h new file mode 100644 index 00000000..6788054b --- /dev/null +++ b/include/libavutil/lzo.h @@ -0,0 +1,66 @@ +/* + * LZO 1x decompression + * copyright (c) 2006 Reimar Doeffinger + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_LZO_H +#define AVUTIL_LZO_H + +#include <stdint.h> + +/** \defgroup errflags Error flags returned by av_lzo1x_decode + * \{ */ +//! end of the input buffer reached before decoding finished +#define AV_LZO_INPUT_DEPLETED 1 +//! decoded data did not fit into output buffer +#define AV_LZO_OUTPUT_FULL 2 +//! a reference to previously decoded data was wrong +#define AV_LZO_INVALID_BACKPTR 4 +//! a non-specific error in the compressed bitstream +#define AV_LZO_ERROR 8 +/** \} */ + +#define AV_LZO_INPUT_PADDING 8 +#define AV_LZO_OUTPUT_PADDING 12 + +/** + * \brief Decodes LZO 1x compressed data. + * \param out output buffer + * \param outlen size of output buffer, number of bytes left are returned here + * \param in input buffer + * \param inlen size of input buffer, number of bytes left are returned here + * \return 0 on success, otherwise a combination of the error flags above + * + * Make sure all buffers are appropriately padded, in must provide + * AV_LZO_INPUT_PADDING, out must provide AV_LZO_OUTPUT_PADDING additional bytes. + */ +int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen); + +/** + * \brief deliberately overlapping memcpy implementation + * \param dst destination buffer; must be padded with 12 additional bytes + * \param back how many bytes back we start (the initial size of the overlapping window) + * \param cnt number of bytes to copy, must be >= 0 + * + * cnt > back is valid, this will copy the bytes we just copied, + * thus creating a repeating pattern with a period length of back. + */ +void av_memcpy_backptr(uint8_t *dst, int back, int cnt); + +#endif /* AVUTIL_LZO_H */ diff --git a/include/libavutil/mathematics.h b/include/libavutil/mathematics.h new file mode 100644 index 00000000..e198aef8 --- /dev/null +++ b/include/libavutil/mathematics.h @@ -0,0 +1,98 @@ +/* + * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_MATHEMATICS_H +#define AVUTIL_MATHEMATICS_H + +#include <stdint.h> +#include <math.h> +#include "attributes.h" +#include "rational.h" + +#ifndef M_E +#define M_E 2.7182818284590452354 /* e */ +#endif +#ifndef M_LN2 +#define M_LN2 0.69314718055994530942 /* log_e 2 */ +#endif +#ifndef M_LN10 +#define M_LN10 2.30258509299404568402 /* log_e 10 */ +#endif +#ifndef M_LOG2_10 +#define M_LOG2_10 3.32192809488736234787 /* log_2 10 */ +#endif +#ifndef M_PI +#define M_PI 3.14159265358979323846 /* pi */ +#endif +#ifndef M_SQRT1_2 +#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ +#endif +#ifndef M_SQRT2 +#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ +#endif +#ifndef NAN +#define NAN (0.0/0.0) +#endif +#ifndef INFINITY +#define INFINITY (1.0/0.0) +#endif + +enum AVRounding { + AV_ROUND_ZERO = 0, ///< Round toward zero. + AV_ROUND_INF = 1, ///< Round away from zero. + AV_ROUND_DOWN = 2, ///< Round toward -infinity. + AV_ROUND_UP = 3, ///< Round toward +infinity. + AV_ROUND_NEAR_INF = 5, ///< Round to nearest and halfway cases away from zero. +}; + +/** + * Returns the greatest common divisor of a and b. + * If both a and b are 0 or either or both are <0 then behavior is + * undefined. + */ +int64_t av_const av_gcd(int64_t a, int64_t b); + +/** + * Rescales a 64-bit integer with rounding to nearest. + * A simple a*b/c isn't possible as it can overflow. + */ +int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const; + +/** + * Rescales a 64-bit integer with specified rounding. + * A simple a*b/c isn't possible as it can overflow. + */ +int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding) av_const; + +/** + * Rescales a 64-bit integer by 2 rational numbers. + */ +int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const; + +/** + * Compares 2 timestamps each in its own timebases. + * The result of the function is undefined if one of the timestamps + * is outside the int64_t range when represented in the others timebase. + * @return -1 if ts_a is before ts_b, 1 if ts_a is after ts_b or 0 if they represent the same position + */ +int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b); + + +#endif /* AVUTIL_MATHEMATICS_H */ diff --git a/include/libavutil/md5.h b/include/libavutil/md5.h new file mode 100644 index 00000000..969202a8 --- /dev/null +++ b/include/libavutil/md5.h @@ -0,0 +1,36 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_MD5_H +#define AVUTIL_MD5_H + +#include <stdint.h> + +extern const int av_md5_size; + +struct AVMD5; + +void av_md5_init(struct AVMD5 *ctx); +void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, const int len); +void av_md5_final(struct AVMD5 *ctx, uint8_t *dst); +void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len); + +#endif /* AVUTIL_MD5_H */ + diff --git a/include/libavutil/mem.h b/include/libavutil/mem.h new file mode 100644 index 00000000..14887927 --- /dev/null +++ b/include/libavutil/mem.h @@ -0,0 +1,125 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * memory handling functions + */ + +#ifndef AVUTIL_MEM_H +#define AVUTIL_MEM_H + +#include "attributes.h" + +#if defined(__ICC) || defined(__SUNPRO_C) + #define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v + #define DECLARE_ASM_CONST(n,t,v) const t __attribute__ ((aligned (n))) v +#elif defined(__TI_COMPILER_VERSION__) + #define DECLARE_ALIGNED(n,t,v) \ + AV_PRAGMA(DATA_ALIGN(v,n)) \ + t __attribute__((aligned(n))) v + #define DECLARE_ASM_CONST(n,t,v) \ + AV_PRAGMA(DATA_ALIGN(v,n)) \ + static const t __attribute__((aligned(n))) v +#elif defined(__GNUC__) + #define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v + #define DECLARE_ASM_CONST(n,t,v) static const t attribute_used __attribute__ ((aligned (n))) v +#elif defined(_MSC_VER) + #define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v + #define DECLARE_ASM_CONST(n,t,v) __declspec(align(n)) static const t v +#else + #define DECLARE_ALIGNED(n,t,v) t v + #define DECLARE_ASM_CONST(n,t,v) static const t v +#endif + +#if AV_GCC_VERSION_AT_LEAST(3,1) + #define av_malloc_attrib __attribute__((__malloc__)) +#else + #define av_malloc_attrib +#endif + +#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,3) + #define av_alloc_size(n) __attribute__((alloc_size(n))) +#else + #define av_alloc_size(n) +#endif + +/** + * Allocates a block of size bytes with alignment suitable for all + * memory accesses (including vectors if available on the CPU). + * @param size Size in bytes for the memory block to be allocated. + * @return Pointer to the allocated block, NULL if the block cannot + * be allocated. + * @see av_mallocz() + */ +void *av_malloc(unsigned int size) av_malloc_attrib av_alloc_size(1); + +/** + * Allocates or reallocates a block of memory. + * If ptr is NULL and size > 0, allocates a new block. If + * size is zero, frees the memory block pointed to by ptr. + * @param size Size in bytes for the memory block to be allocated or + * reallocated. + * @param ptr Pointer to a memory block already allocated with + * av_malloc(z)() or av_realloc() or NULL. + * @return Pointer to a newly reallocated block or NULL if the block + * cannot be reallocated or the function is used to free the memory block. + * @see av_fast_realloc() + */ +void *av_realloc(void *ptr, unsigned int size) av_alloc_size(2); + +/** + * Frees a memory block which has been allocated with av_malloc(z)() or + * av_realloc(). + * @param ptr Pointer to the memory block which should be freed. + * @note ptr = NULL is explicitly allowed. + * @note It is recommended that you use av_freep() instead. + * @see av_freep() + */ +void av_free(void *ptr); + +/** + * Allocates a block of size bytes with alignment suitable for all + * memory accesses (including vectors if available on the CPU) and + * zeroes all the bytes of the block. + * @param size Size in bytes for the memory block to be allocated. + * @return Pointer to the allocated block, NULL if it cannot be allocated. + * @see av_malloc() + */ +void *av_mallocz(unsigned int size) av_malloc_attrib av_alloc_size(1); + +/** + * Duplicates the string s. + * @param s string to be duplicated + * @return Pointer to a newly allocated string containing a + * copy of s or NULL if the string cannot be allocated. + */ +char *av_strdup(const char *s) av_malloc_attrib; + +/** + * Frees a memory block which has been allocated with av_malloc(z)() or + * av_realloc() and set the pointer pointing to it to NULL. + * @param ptr Pointer to the pointer to the memory block which should + * be freed. + * @see av_free() + */ +void av_freep(void *ptr); + +#endif /* AVUTIL_MEM_H */ diff --git a/include/libavutil/pixdesc.h b/include/libavutil/pixdesc.h new file mode 100644 index 00000000..8e4c85d7 --- /dev/null +++ b/include/libavutil/pixdesc.h @@ -0,0 +1,154 @@ +/* + * pixel format descriptor + * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_PIXDESC_H +#define AVUTIL_PIXDESC_H + +#include <inttypes.h> + +typedef struct AVComponentDescriptor{ + uint16_t plane :2; ///< which of the 4 planes contains the component + + /** + * Number of elements between 2 horizontally consecutive pixels minus 1. + * Elements are bits for bitstream formats, bytes otherwise. + */ + uint16_t step_minus1 :3; + + /** + * Number of elements before the component of the first pixel plus 1. + * Elements are bits for bitstream formats, bytes otherwise. + */ + uint16_t offset_plus1 :3; + uint16_t shift :3; ///< number of least significant bits that must be shifted away to get the value + uint16_t depth_minus1 :4; ///< number of bits in the component minus 1 +}AVComponentDescriptor; + +/** + * Descriptor that unambiguously describes how the bits of a pixel are + * stored in the up to 4 data planes of an image. It also stores the + * subsampling factors and number of components. + * + * @note This is separate of the colorspace (RGB, YCbCr, YPbPr, JPEG-style YUV + * and all the YUV variants) AVPixFmtDescriptor just stores how values + * are stored not what these values represent. + */ +typedef struct AVPixFmtDescriptor{ + const char *name; + uint8_t nb_components; ///< The number of components each pixel has, (1-4) + + /** + * Amount to shift the luma width right to find the chroma width. + * For YV12 this is 1 for example. + * chroma_width = -((-luma_width) >> log2_chroma_w) + * The note above is needed to ensure rounding up. + * This value only refers to the chroma components. + */ + uint8_t log2_chroma_w; ///< chroma_width = -((-luma_width )>>log2_chroma_w) + + /** + * Amount to shift the luma height right to find the chroma height. + * For YV12 this is 1 for example. + * chroma_height= -((-luma_height) >> log2_chroma_h) + * The note above is needed to ensure rounding up. + * This value only refers to the chroma components. + */ + uint8_t log2_chroma_h; + uint8_t flags; + + /** + * Parameters that describe how pixels are packed. If the format + * has chroma components, they must be stored in comp[1] and + * comp[2]. + */ + AVComponentDescriptor comp[4]; +}AVPixFmtDescriptor; + +#define PIX_FMT_BE 1 ///< Pixel format is big-endian. +#define PIX_FMT_PAL 2 ///< Pixel format has a palette in data[1], values are indexes in this palette. +#define PIX_FMT_BITSTREAM 4 ///< All values of a component are bit-wise packed end to end. +#define PIX_FMT_HWACCEL 8 ///< Pixel format is an HW accelerated format. + +/** + * The array of all the pixel format descriptors. + */ +extern const AVPixFmtDescriptor av_pix_fmt_descriptors[]; + +/** + * Reads a line from an image, and writes the values of the + * pixel format component c to dst. + * + * @param data the array containing the pointers to the planes of the image + * @param linesizes the array containing the linesizes of the image + * @param desc the pixel format descriptor for the image + * @param x the horizontal coordinate of the first pixel to read + * @param y the vertical coordinate of the first pixel to read + * @param w the width of the line to read, that is the number of + * values to write to dst + * @param read_pal_component if not zero and the format is a paletted + * format writes the values corresponding to the palette + * component c in data[1] to dst, rather than the palette indexes in + * data[0]. The behavior is undefined if the format is not paletted. + */ +void read_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4], + const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component); + +/** + * Writes the values from src to the pixel format component c of an + * image line. + * + * @param src array containing the values to write + * @param data the array containing the pointers to the planes of the + * image to write into. It is supposed to be zeroed. + * @param linesizes the array containing the linesizes of the image + * @param desc the pixel format descriptor for the image + * @param x the horizontal coordinate of the first pixel to write + * @param y the vertical coordinate of the first pixel to write + * @param w the width of the line to write, that is the number of + * values to write to the image line + */ +void write_line(const uint16_t *src, uint8_t *data[4], const int linesize[4], + const AVPixFmtDescriptor *desc, int x, int y, int c, int w); + +/** + * Returns the pixel format corresponding to name. + * + * If there is no pixel format with name name, then looks for a + * pixel format with the name corresponding to the native endian + * format of name. + * For example in a little-endian system, first looks for "gray16", + * then for "gray16le". + * + * Finally if no pixel format has been found, returns PIX_FMT_NONE. + */ +enum PixelFormat av_get_pix_fmt(const char *name); + +/** + * Returns the number of bits per pixel used by the pixel format + * described by pixdesc. + * + * The returned number of bits refers to the number of bits actually + * used for storing the pixel information, that is padding bits are + * not counted. + */ +int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc); + +#endif /* AVUTIL_PIXDESC_H */ diff --git a/include/libavutil/pixfmt.h b/include/libavutil/pixfmt.h new file mode 100644 index 00000000..d976f343 --- /dev/null +++ b/include/libavutil/pixfmt.h @@ -0,0 +1,163 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_PIXFMT_H +#define AVUTIL_PIXFMT_H + +/** + * @file + * pixel format definitions + * + * @warning This file has to be considered an internal but installed + * header, so it should not be directly included in your projects. + */ + +#include "libavutil/avconfig.h" + +/** + * Pixel format. Notes: + * + * PIX_FMT_RGB32 is handled in an endian-specific manner. An RGBA + * color is put together as: + * (A << 24) | (R << 16) | (G << 8) | B + * This is stored as BGRA on little-endian CPU architectures and ARGB on + * big-endian CPUs. + * + * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized + * image data is stored in AVFrame.data[0]. The palette is transported in + * AVFrame.data[1], is 1024 bytes long (256 4-byte entries) and is + * formatted the same as in PIX_FMT_RGB32 described above (i.e., it is + * also endian-specific). Note also that the individual RGB palette + * components stored in AVFrame.data[1] should be in the range 0..255. + * This is important as many custom PAL8 video codecs that were designed + * to run on the IBM VGA graphics adapter use 6-bit palette components. + * + * For all the 8bit per pixel formats, an RGB32 palette is in data[1] like + * for pal8. This palette is filled in automatically by the function + * allocating the picture. + * + * Note, make sure that all newly added big endian formats have pix_fmt&1==1 + * and that all newly added little endian formats have pix_fmt&1==0 + * this allows simpler detection of big vs little endian. + */ +enum PixelFormat { + PIX_FMT_NONE= -1, + PIX_FMT_YUV420P, ///< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples) + PIX_FMT_YUYV422, ///< packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr + PIX_FMT_RGB24, ///< packed RGB 8:8:8, 24bpp, RGBRGB... + PIX_FMT_BGR24, ///< packed RGB 8:8:8, 24bpp, BGRBGR... + PIX_FMT_YUV422P, ///< planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples) + PIX_FMT_YUV444P, ///< planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples) + PIX_FMT_YUV410P, ///< planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples) + PIX_FMT_YUV411P, ///< planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) + PIX_FMT_GRAY8, ///< Y , 8bpp + PIX_FMT_MONOWHITE, ///< Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb + PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb + PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette + PIX_FMT_YUVJ420P, ///< planar YUV 4:2:0, 12bpp, full scale (JPEG) + PIX_FMT_YUVJ422P, ///< planar YUV 4:2:2, 16bpp, full scale (JPEG) + PIX_FMT_YUVJ444P, ///< planar YUV 4:4:4, 24bpp, full scale (JPEG) + PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing + PIX_FMT_XVMC_MPEG2_IDCT, + PIX_FMT_UYVY422, ///< packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1 + PIX_FMT_UYYVYY411, ///< packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3 + PIX_FMT_BGR8, ///< packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb) + PIX_FMT_BGR4, ///< packed RGB 1:2:1 bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits + PIX_FMT_BGR4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb) + PIX_FMT_RGB8, ///< packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb) + PIX_FMT_RGB4, ///< packed RGB 1:2:1 bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits + PIX_FMT_RGB4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb) + PIX_FMT_NV12, ///< planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (first byte U and the following byte V) + PIX_FMT_NV21, ///< as above, but U and V bytes are swapped + + PIX_FMT_ARGB, ///< packed ARGB 8:8:8:8, 32bpp, ARGBARGB... + PIX_FMT_RGBA, ///< packed RGBA 8:8:8:8, 32bpp, RGBARGBA... + PIX_FMT_ABGR, ///< packed ABGR 8:8:8:8, 32bpp, ABGRABGR... + PIX_FMT_BGRA, ///< packed BGRA 8:8:8:8, 32bpp, BGRABGRA... + + PIX_FMT_GRAY16BE, ///< Y , 16bpp, big-endian + PIX_FMT_GRAY16LE, ///< Y , 16bpp, little-endian + PIX_FMT_YUV440P, ///< planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples) + PIX_FMT_YUVJ440P, ///< planar YUV 4:4:0 full scale (JPEG) + PIX_FMT_YUVA420P, ///< planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples) + PIX_FMT_VDPAU_H264,///< H.264 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_MPEG1,///< MPEG-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_MPEG2,///< MPEG-2 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_WMV3,///< WMV3 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_VDPAU_VC1, ///< VC-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_RGB48BE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big-endian + PIX_FMT_RGB48LE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as little-endian + + PIX_FMT_RGB565BE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian + PIX_FMT_RGB565LE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian + PIX_FMT_RGB555BE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), big-endian, most significant bit to 0 + PIX_FMT_RGB555LE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), little-endian, most significant bit to 0 + + PIX_FMT_BGR565BE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian + PIX_FMT_BGR565LE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian + PIX_FMT_BGR555BE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), big-endian, most significant bit to 1 + PIX_FMT_BGR555LE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), little-endian, most significant bit to 1 + + PIX_FMT_VAAPI_MOCO, ///< HW acceleration through VA API at motion compensation entry-point, Picture.data[3] contains a vaapi_render_state struct which contains macroblocks as well as various fields extracted from headers + PIX_FMT_VAAPI_IDCT, ///< HW acceleration through VA API at IDCT entry-point, Picture.data[3] contains a vaapi_render_state struct which contains fields extracted from headers + PIX_FMT_VAAPI_VLD, ///< HW decoding through VA API, Picture.data[3] contains a vaapi_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + + PIX_FMT_YUV420P16LE, ///< planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian + PIX_FMT_YUV420P16BE, ///< planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian + PIX_FMT_YUV422P16LE, ///< planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian + PIX_FMT_YUV422P16BE, ///< planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian + PIX_FMT_YUV444P16LE, ///< planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian + PIX_FMT_YUV444P16BE, ///< planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian + PIX_FMT_VDPAU_MPEG4, ///< MPEG4 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers + PIX_FMT_DXVA2_VLD, ///< HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer + + PIX_FMT_RGB444BE, ///< packed RGB 4:4:4, 16bpp, (msb)4A 4R 4G 4B(lsb), big-endian, most significant bits to 0 + PIX_FMT_RGB444LE, ///< packed RGB 4:4:4, 16bpp, (msb)4A 4R 4G 4B(lsb), little-endian, most significant bits to 0 + PIX_FMT_BGR444BE, ///< packed BGR 4:4:4, 16bpp, (msb)4A 4B 4G 4R(lsb), big-endian, most significant bits to 1 + PIX_FMT_BGR444LE, ///< packed BGR 4:4:4, 16bpp, (msb)4A 4B 4G 4R(lsb), little-endian, most significant bits to 1 + PIX_FMT_Y400A, ///< 8bit gray, 8bit alpha + PIX_FMT_NB, ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions +}; + +#if AV_HAVE_BIGENDIAN +# define PIX_FMT_NE(be, le) PIX_FMT_##be +#else +# define PIX_FMT_NE(be, le) PIX_FMT_##le +#endif + +#define PIX_FMT_RGB32 PIX_FMT_NE(ARGB, BGRA) +#define PIX_FMT_RGB32_1 PIX_FMT_NE(RGBA, ABGR) +#define PIX_FMT_BGR32 PIX_FMT_NE(ABGR, RGBA) +#define PIX_FMT_BGR32_1 PIX_FMT_NE(BGRA, ARGB) + +#define PIX_FMT_GRAY16 PIX_FMT_NE(GRAY16BE, GRAY16LE) +#define PIX_FMT_RGB48 PIX_FMT_NE(RGB48BE, RGB48LE) +#define PIX_FMT_RGB565 PIX_FMT_NE(RGB565BE, RGB565LE) +#define PIX_FMT_RGB555 PIX_FMT_NE(RGB555BE, RGB555LE) +#define PIX_FMT_RGB444 PIX_FMT_NE(RGB444BE, RGB444LE) +#define PIX_FMT_BGR565 PIX_FMT_NE(BGR565BE, BGR565LE) +#define PIX_FMT_BGR555 PIX_FMT_NE(BGR555BE, BGR555LE) +#define PIX_FMT_BGR444 PIX_FMT_NE(BGR444BE, BGR444LE) + +#define PIX_FMT_YUV420P16 PIX_FMT_NE(YUV420P16BE, YUV420P16LE) +#define PIX_FMT_YUV422P16 PIX_FMT_NE(YUV422P16BE, YUV422P16LE) +#define PIX_FMT_YUV444P16 PIX_FMT_NE(YUV444P16BE, YUV444P16LE) + +#endif /* AVUTIL_PIXFMT_H */ diff --git a/include/libavutil/rational.h b/include/libavutil/rational.h new file mode 100644 index 00000000..4d91f7ba --- /dev/null +++ b/include/libavutil/rational.h @@ -0,0 +1,129 @@ +/* + * rational numbers + * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * rational numbers + * @author Michael Niedermayer <michaelni@gmx.at> + */ + +#ifndef AVUTIL_RATIONAL_H +#define AVUTIL_RATIONAL_H + +#include <stdint.h> +#include "attributes.h" + +/** + * rational number numerator/denominator + */ +typedef struct AVRational{ + int num; ///< numerator + int den; ///< denominator +} AVRational; + +/** + * Compares two rationals. + * @param a first rational + * @param b second rational + * @return 0 if a==b, 1 if a>b and -1 if a<b + */ +static inline int av_cmp_q(AVRational a, AVRational b){ + const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den; + + if(tmp) return (tmp>>63)|1; + else return 0; +} + +/** + * Converts rational to double. + * @param a rational to convert + * @return (double) a + */ +static inline double av_q2d(AVRational a){ + return a.num / (double) a.den; +} + +/** + * Reduces a fraction. + * This is useful for framerate calculations. + * @param dst_num destination numerator + * @param dst_den destination denominator + * @param num source numerator + * @param den source denominator + * @param max the maximum allowed for dst_num & dst_den + * @return 1 if exact, 0 otherwise + */ +int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max); + +/** + * Multiplies two rationals. + * @param b first rational + * @param c second rational + * @return b*c + */ +AVRational av_mul_q(AVRational b, AVRational c) av_const; + +/** + * Divides one rational by another. + * @param b first rational + * @param c second rational + * @return b/c + */ +AVRational av_div_q(AVRational b, AVRational c) av_const; + +/** + * Adds two rationals. + * @param b first rational + * @param c second rational + * @return b+c + */ +AVRational av_add_q(AVRational b, AVRational c) av_const; + +/** + * Subtracts one rational from another. + * @param b first rational + * @param c second rational + * @return b-c + */ +AVRational av_sub_q(AVRational b, AVRational c) av_const; + +/** + * Converts a double precision floating point number to a rational. + * @param d double to convert + * @param max the maximum allowed numerator and denominator + * @return (AVRational) d + */ +AVRational av_d2q(double d, int max) av_const; + +/** + * @return 1 if q1 is nearer to q than q2, -1 if q2 is nearer + * than q1, 0 if they have the same distance. + */ +int av_nearer_q(AVRational q, AVRational q1, AVRational q2); + +/** + * Finds the nearest value in q_list to q. + * @param q_list an array of rationals terminated by {0, 0} + * @return the index of the nearest value found in the array + */ +int av_find_nearest_q_idx(AVRational q, const AVRational* q_list); + +#endif /* AVUTIL_RATIONAL_H */ diff --git a/include/libavutil/sha1.h b/include/libavutil/sha1.h new file mode 100644 index 00000000..cf7c4a65 --- /dev/null +++ b/include/libavutil/sha1.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_SHA1_H +#define AVUTIL_SHA1_H + +#include <stdint.h> + +extern const int av_sha1_size; + +struct AVSHA1; + +/** + * Initializes SHA-1 hashing. + * + * @param context pointer to the function context (of size av_sha_size) + * @deprecated use av_sha_init() instead + */ +void av_sha1_init(struct AVSHA1* context); + +/** + * Updates hash value. + * + * @param context hash function context + * @param data input data to update hash with + * @param len input data length + * @deprecated use av_sha_update() instead + */ +void av_sha1_update(struct AVSHA1* context, const uint8_t* data, unsigned int len); + +/** + * Finishes hashing and output digest value. + * + * @param context hash function context + * @param digest buffer where output digest value is stored + * @deprecated use av_sha_final() instead + */ +void av_sha1_final(struct AVSHA1* context, uint8_t digest[20]); + +#endif /* AVUTIL_SHA1_H */ diff --git a/lib-x86-32/libavcodec.a b/lib-x86-32/libavcodec.a Binary files differnew file mode 100644 index 00000000..9abf8d1e --- /dev/null +++ b/lib-x86-32/libavcodec.a diff --git a/lib-x86-32/libavformat.a b/lib-x86-32/libavformat.a Binary files differnew file mode 100644 index 00000000..85cac092 --- /dev/null +++ b/lib-x86-32/libavformat.a diff --git a/lib-x86-32/libavutil.a b/lib-x86-32/libavutil.a Binary files differnew file mode 100644 index 00000000..9456d655 --- /dev/null +++ b/lib-x86-32/libavutil.a diff --git a/portable_build.sh b/portable_build.sh index 7e305bf4..f14946a1 100755 --- a/portable_build.sh +++ b/portable_build.sh @@ -1,11 +1,11 @@ #!/bin/sh VERSION=`cat PORTABLE_VERSION | perl -ne 'chomp and print'` -CC=$HOME/bin/autopackage/apbuild/apgcc CXX=$HOME/bin/autopackage/apbuild/apgcc ./configure --enable-portable --disable-ffmpeg --disable-pulse --enable-maintainer-mode --disable-nls +CC=$HOME/bin/autopackage/apbuild/apgcc CXX=$HOME/bin/autopackage/apbuild/apgcc ./configure --enable-portable --disable-pulse --enable-maintainer-mode --disable-nls sed -i 's/-lstdc++ -lm -lgcc_s -lc -lgcc_s/-lm -lc/g' libtool -make clean +#make clean make -j9 -./portable_postbuild.sh +#./portable_postbuild.sh diff --git a/portable_postbuild.sh b/portable_postbuild.sh index a76a722f..a656a148 100755 --- a/portable_postbuild.sh +++ b/portable_postbuild.sh @@ -17,6 +17,7 @@ cp ./plugins/mpgmad/.libs/mpgmad.so $PLUGDIR/ cp ./plugins/hotkeys/.libs/hotkeys.so $PLUGDIR/ cp ./plugins/vtx/.libs/vtx.so $PLUGDIR/ cp ./plugins/ffap/.libs/ffap.so $PLUGDIR/ +cp ./plugins/ffmpeg/.libs/ffmpeg.so $PLUGDIR/ cp ./plugins/wavpack/.libs/wavpack.so $PLUGDIR/ cp ./plugins/vorbis/.libs/vorbis.so $PLUGDIR/ cp ./plugins/oss/.libs/oss.so $PLUGDIR/ |