diff options
author | 2003-05-11 16:39:16 +0000 | |
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committer | 2003-05-11 16:39:16 +0000 | |
commit | 7787041e0b7781aa1620695d0cf539131c4dcf83 (patch) | |
tree | 3d89dc2915857f8d3fee9e5a8480252b80decc41 /libmpdemux/demux_ogg.c | |
parent | 05672bfc5495714335369a42f0fcbe8cd6c122b1 (diff) |
Preliminary Theora support. Patch by David Kuehling.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10093 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libmpdemux/demux_ogg.c')
-rw-r--r-- | libmpdemux/demux_ogg.c | 153 |
1 files changed, 128 insertions, 25 deletions
diff --git a/libmpdemux/demux_ogg.c b/libmpdemux/demux_ogg.c index c3da05e1ad..75a153dc1f 100644 --- a/libmpdemux/demux_ogg.c +++ b/libmpdemux/demux_ogg.c @@ -6,6 +6,8 @@ #include <stdlib.h> #include <stdio.h> #include <string.h> +#include <assert.h> +#include <math.h> #include "../mp_msg.h" #include "../help_mp.h" @@ -21,6 +23,10 @@ #include <vorbis/codec.h> #endif +#ifdef HAVE_OGGTHEORA +#include <theora/theora.h> +#endif + #define BLOCK_SIZE 4096 /// Vorbis decoder context : we need the vorbis_info for vorbis timestamping @@ -37,6 +43,17 @@ typedef struct ov_struct_st { #endif } ov_struct_t; +/* Theora decoder context : we won't be able to interpret granule positions + * without using theora_granule_time with the theora_state of the stream. + * This is duplicated in `vd_theora.c'; put this in a common header? + */ +#ifdef HAVE_OGGTHEORA +typedef struct theora_struct_st { + theora_state st; + theora_info inf; +} theora_struct_t; +#endif + //// OggDS headers // Header for the new header format typedef struct stream_header_video @@ -93,6 +110,7 @@ typedef struct ogg_stream { ogg_stream_state stream; int hdr_packets; int vorbis; + int theora; } ogg_stream_t; typedef struct ogg_demuxer { @@ -279,7 +297,7 @@ static int demux_ogg_get_page_stream(ogg_demuxer_t* ogg_d,ogg_stream_state** os } -static unsigned char* demux_ogg_read_packet(ogg_stream_t* os,ogg_packet* pack,vorbis_info* vi,float* pts,int* flags) { +static unsigned char* demux_ogg_read_packet(ogg_stream_t* os,ogg_packet* pack,void *context,float* pts,int* flags) { unsigned char* data; *pts = 0; @@ -289,19 +307,47 @@ static unsigned char* demux_ogg_read_packet(ogg_stream_t* os,ogg_packet* pack,vo data = pack->packet; if(*pack->packet & PACKET_TYPE_HEADER) os->hdr_packets++; - else if(vi) { - // When we dump the audio, there is no vi, but we dont care of timestamp in this case - int32_t blocksize = vorbis_packet_blocksize(vi,pack) / vi->channels; - // Calculate the timestamp if the packet don't have any - if(pack->granulepos == -1) { - pack->granulepos = os->lastpos; - if(os->lastsize > 0) - pack->granulepos += os->lastsize; - } - *pts = pack->granulepos / (float)vi->rate; - os->lastsize = blocksize; - os->lastpos = pack->granulepos; + else if (context ) + { + vorbis_info *vi = &((ov_struct_t*)context)->vi; + + // When we dump the audio, there is no vi, but we dont care of timestamp in this case + int32_t blocksize = vorbis_packet_blocksize(vi,pack) / vi->channels; + // Calculate the timestamp if the packet don't have any + if(pack->granulepos == -1) { + pack->granulepos = os->lastpos; + if(os->lastsize > 0) + pack->granulepos += os->lastsize; + } + *pts = pack->granulepos / (float)vi->rate; + os->lastsize = blocksize; + os->lastpos = pack->granulepos; } +# ifdef HAVE_OGGTHEORA + } else if (os->theora) { + /* we pass complete packets to theora, mustn't strip the header! */ + data = pack->packet; + os->lastsize = 1; + + if (context != NULL) + { + theora_state *st; + int64_t usable_granulepos; + + st = &((theora_struct_t*)context)->st; + *pts = theora_granule_time (st, pack->granulepos); + if (*pts >= 0) + { + usable_granulepos = (int64_t)ceil (*pts * os->samplerate - 0.5); + os->lastpos = usable_granulepos; + } + else + { + os->lastpos++; + *pts = (double)os->lastpos / (double)os->samplerate; + } + } +#endif /* HAVE_OGGTHEORA */ } else { // Find data start int16_t hdrlen = (*pack->packet & PACKET_LEN_BITS01)>>6; @@ -334,22 +380,26 @@ static int demux_ogg_add_packet(demux_stream_t* ds,ogg_stream_t* os,ogg_packet* unsigned char* data; float pts = 0; int flags = 0; + void *context = NULL; if (ds == d->sub) { // don't want to add subtitles to the demuxer for now demux_ogg_add_sub(os,pack); return 0; } - // If packet is an header we jump it except for vorbis + // If packet is an header we jump it except for vorbis and theora + // (PACKET_TYPE_HEADER bit doesn't even exist for theora ?!) if((*pack->packet & PACKET_TYPE_HEADER) && - (ds == d->video || (ds == d->audio && ( ((sh_audio_t*)ds->sh)->format != 0xFFFE || os->hdr_packets >= NUM_VORBIS_HDR_PACKETS ) ) )) + (ds != d->audio || ( ((sh_audio_t*)ds->sh)->format != 0xFFFE || os->hdr_packets >= NUM_VORBIS_HDR_PACKETS ) ) && + (ds != d->video || (((sh_video_t*)ds->sh)->format != 0xFFFC))) return 0; - // For vorbis packet the packet is the data, for other codec we must jump the header + // For vorbis packet the packet is the data, for other codec we must jump + // the header if(ds == d->audio && ((sh_audio_t*)ds->sh)->format == 0xFFFE) - data = demux_ogg_read_packet(os,pack,&((ov_struct_t*)((sh_audio_t*)ds->sh)->context)->vi, - &pts,&flags); - else - data = demux_ogg_read_packet(os,pack,NULL,&pts,&flags); + context = ((sh_audio_t *)ds->sh)->context; + if (ds == d->video && ((sh_audio_t*)ds->sh)->format == 0xFFFC) + context = ((sh_video_t *)ds->sh)->context; + data = demux_ogg_read_packet(os,pack,context,&pts,&flags); /// Clear subtitles if necessary (for broken files) if ((clear_sub > 0) && (pts >= clear_sub)) { @@ -379,7 +429,7 @@ void demux_ogg_build_syncpoints_table(demuxer_t* demuxer) { ogg_stream_t* os; ogg_packet op; int np,sid,p; - vorbis_info* vi = NULL; + void *context = NULL; off_t pos, last_pos; pos = last_pos = demuxer->movi_start; @@ -388,12 +438,17 @@ void demux_ogg_build_syncpoints_table(demuxer_t* demuxer) { ogg_sync_reset(sync); // Get the serial number of the stream we use - if(demuxer->video->id >= 0) + if(demuxer->video->id >= 0) { sid = demuxer->video->id; + /* demux_ogg_read_packet needs decoder context for Theora streams */ + if (((sh_video_t*)demuxer->video->sh)->format == 0xFFFC) + context = ((sh_video_t*)demuxer->video->sh)->context; + } else { sid = demuxer->audio->id; + /* demux_ogg_read_packet needs decoder context for Vorbis streams */ if(((sh_audio_t*)demuxer->audio->sh)->format == 0xFFFE) - vi = &((ov_struct_t*)((sh_audio_t*)demuxer->audio->sh)->context)->vi; + context = ((sh_audio_t*)demuxer->audio->sh)->context; } os = &ogg_d->subs[sid]; oss = &os->stream; @@ -428,7 +483,7 @@ void demux_ogg_build_syncpoints_table(demuxer_t* demuxer) { while(ogg_stream_packetout(oss,&op) == 1) { float pts; int flags; - demux_ogg_read_packet(os,&op,vi,&pts,&flags); + demux_ogg_read_packet(os,&op,context,&pts,&flags); if(flags || (os->vorbis && op.granulepos >= 0)) { ogg_d->syncpoints = (ogg_syncpoint_t*)realloc(ogg_d->syncpoints,(ogg_d->num_syncpoint+1)*sizeof(ogg_syncpoint_t)); ogg_d->syncpoints[ogg_d->num_syncpoint].granulepos = op.granulepos; @@ -563,6 +618,48 @@ int demux_ogg_open(demuxer_t* demuxer) { n_audio++; mp_msg(MSGT_DEMUX,MSGL_V,"OGG : stream %d is vorbis\n",ogg_d->num_sub); + // check for Theora +# ifdef HAVE_OGGTHEORA + } else if (pack.bytes >= 7 && !strncmp (&pack.packet[1], "theora", 6)) { + int errorCode = 0; + theora_info inf; + errorCode = theora_decode_header (&inf, &pack); + if (errorCode) + mp_msg(MSGT_DEMUX,MSGL_ERR,"Theora header parsing failed: %i \n", + errorCode); + else + { + sh_v = new_sh_video(demuxer,ogg_d->num_sub); + + sh_v->context = NULL; + sh_v->bih = (BITMAPINFOHEADER*)calloc(1,sizeof(BITMAPINFOHEADER)); + sh_v->bih->biSize=sizeof(BITMAPINFOHEADER); + sh_v->bih->biCompression= sh_v->format = 0xFFFC; + sh_v->fps = ((double)inf.fps_numerator)/ + (double)inf.fps_denominator; + sh_v->frametime = ((double)inf.fps_denominator)/ + (double)inf.fps_numerator; + sh_v->disp_w = sh_v->bih->biWidth = inf.width; + sh_v->disp_h = sh_v->bih->biHeight = inf.height; + sh_v->bih->biBitCount = 24; + sh_v->bih->biPlanes = 3; + sh_v->bih->biSizeImage = ((sh_v->bih->biBitCount/8) * + sh_v->bih->biWidth*sh_v->bih->biHeight); + ogg_d->subs[ogg_d->num_sub].samplerate = sh_v->fps; + ogg_d->subs[ogg_d->num_sub].theora = 1; + n_video++; + mp_msg(MSGT_DEMUX,MSGL_V, + "OGG : stream %d is theora v%i.%i.%i %i:%i, %.3f FPS," + " aspect %i:%i\n", ogg_d->num_sub, + (int)inf.version_major, + (int)inf.version_minor, + (int)inf.version_subminor, + inf.width, inf.height, + sh_v->fps, + inf.aspect_numerator, inf.aspect_denominator); + if(verbose>0) print_video_header(sh_v->bih); + } +# endif /* HAVE_OGGTHEORA */ /// Check for old header } else if(pack.bytes >= 142 && ! strncmp(&pack.packet[1],"Direct Show Samples embedded in Ogg",35) ) { @@ -1025,7 +1122,13 @@ void demux_ogg_seek(demuxer_t *demuxer,float rel_seek_secs,int flags) { break; } - if( ((*op.packet & PACKET_IS_SYNCPOINT) || os->vorbis ) && + /* the detection of keyframes for theora is somewhat a hack: granulepos + for theora packets is `keyframeNumber<<shift | iframeNumber'; `shift' + is *variable*, with its excact value encoded in the theora header. + This code just hopes that it is greater than 9 and that keyframes + distance will never overflow 512. */ + if( (((*op.packet & PACKET_IS_SYNCPOINT) && !os->theora) || + os->vorbis || (os->theora && (op.granulepos&0x1FF) == 0)) && (!ogg_d->syncpoints || op.granulepos >= gp) ) { ogg_sub.lines = 0; vo_sub = &ogg_sub; |