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Diffstat (limited to 'libmpcodecs/vd_lcl.c')
-rw-r--r--libmpcodecs/vd_lcl.c718
1 files changed, 0 insertions, 718 deletions
diff --git a/libmpcodecs/vd_lcl.c b/libmpcodecs/vd_lcl.c
deleted file mode 100644
index b5b08f4cf1..0000000000
--- a/libmpcodecs/vd_lcl.c
+++ /dev/null
@@ -1,718 +0,0 @@
-/*
- *
- * LCL (LossLess Codec Library) Decoder for Mplayer
- * (c) 2002, 2003 Roberto Togni
- *
- * Fourcc: MSZH, ZLIB
- *
- * Win32 dll:
- * Ver2.23 By Kenji Oshima 2000.09.20
- * avimszh.dll, avizlib.dll
- *
- * A description of the decoding algorithm can be found here:
- * http://www.pcisys.net/~melanson/codecs
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "config.h"
-
-#ifdef HAVE_ZLIB
-#include <zlib.h>
-#endif
-
-#include "mp_msg.h"
-
-#include "vd_internal.h"
-
-
-static vd_info_t info = {
- "LCL Video decoder",
- "lcl",
- "Roberto Togni",
- "Roberto Togni",
- "native codec"
-};
-
-LIBVD_EXTERN(lcl)
-
-
-#define BMPTYPE_YUV 1
-#define BMPTYPE_RGB 2
-
-#define IMGTYPE_YUV111 0
-#define IMGTYPE_YUV422 1
-#define IMGTYPE_RGB24 2
-#define IMGTYPE_YUV411 3
-#define IMGTYPE_YUV211 4
-#define IMGTYPE_YUV420 5
-
-#define COMP_MSZH 0
-#define COMP_MSZH_NOCOMP 1
-#define COMP_ZLIB_HISPEED 1
-#define COMP_ZLIB_HICOMP 9
-#define COMP_ZLIB_NORMAL -1
-
-#define FLAG_MULTITHREAD 1
-#define FLAG_NULLFRAME 2
-#define FLAG_PNGFILTER 4
-#define FLAGMASK_UNUSED 0xf8
-
-#define CODEC_MSZH 1
-#define CODEC_ZLIB 3
-
-#define FOURCC_MSZH mmioFOURCC('M','S','Z','H')
-#define FOURCC_ZLIB mmioFOURCC('Z','L','I','B')
-
-/*
- * Decoder context
- */
-typedef struct {
- // Image type
- int imgtype;
- // Compression type
- int compression;
- // Flags
- int flags;
- // Codec type
- int codec;
- // Decompressed data size
- unsigned int decomp_size;
- // Decompression buffer
- unsigned char* decomp_buf;
-#ifdef HAVE_ZLIB
- z_stream zstream;
-#endif
-} lcl_context_t;
-
-
-/*
- * Internal function prototypes
- */
-
-
-// to set/get/query special features/parameters
-static int control(sh_video_t *sh,int cmd,void* arg,...)
-{
- return CONTROL_UNKNOWN;
-}
-
-
-/*
- *
- * Init LCL decoder
- *
- */
-static int init(sh_video_t *sh)
-{
- int vo_ret; // Video output init ret value
- int zret; // Zlib return code
- lcl_context_t *hc; // Decoder context
- BITMAPINFOHEADER *bih = sh->bih;
- int basesize = bih->biWidth * bih->biHeight;
-
- if ((hc = malloc(sizeof(lcl_context_t))) == NULL) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Can't allocate memory for LCL decoder context.\n");
- return 0;
- }
-
- sh->context = (void *)hc;
-
-#ifdef HAVE_ZLIB
- // Needed if zlib unused or init aborted before inflateInit
- memset(&(hc->zstream), 0, sizeof(z_stream));
-#endif
-
- if ((bih->biCompression != FOURCC_MSZH) && (bih->biCompression != FOURCC_ZLIB)) {
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] Unknown BITMAPHEADER fourcc.\n");
- return 0;
- }
-
- if (bih->biSize < sizeof(BITMAPINFOHEADER) + 8) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] BITMAPHEADER size too small.\n");
- return 0;
- }
-
- /* Detect codec type */
- switch (hc->codec = *((char *)bih + sizeof(BITMAPINFOHEADER) + 7)) {
- case CODEC_MSZH:
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Codec is MSZH.\n");
- break;
- case CODEC_ZLIB:
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Codec is ZLIB.\n");
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] Unknown codec id %d. Trusting fourcc.\n", hc->codec);
- switch (bih->biCompression) {
- case FOURCC_MSZH:
- hc->codec = CODEC_MSZH;
- break;
- case FOURCC_ZLIB:
- hc->codec = CODEC_ZLIB;
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] BUG! Unknown coded id and fourcc. Why am I here?.\n");
- return 0;
- }
- }
-
-
- /* Detect image type */
- switch (hc->imgtype = *((char *)bih + sizeof(BITMAPINFOHEADER) + 4)) {
- case IMGTYPE_YUV111:
- hc->decomp_size = basesize * 3;
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Image type is YUV 1:1:1.\n");
- break;
- case IMGTYPE_YUV422:
- hc->decomp_size = basesize * 2;
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Image type is YUV 4:2:2.\n");
- break;
- case IMGTYPE_RGB24:
- hc->decomp_size = basesize * 3;
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Image type is RGB 24.\n");
- break;
- case IMGTYPE_YUV411:
- hc->decomp_size = basesize / 2 * 3;
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Image type is YUV 4:1:1.\n");
- break;
- case IMGTYPE_YUV211:
- hc->decomp_size = basesize * 2;
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Image type is YUV 2:1:1.\n");
- break;
- case IMGTYPE_YUV420:
- hc->decomp_size = basesize / 2 * 3;
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Image type is YUV 4:2:0.\n");
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] Unsupported image format %d.\n", hc->imgtype);
- return 0;
- }
-
- /* Detect compression method */
- hc->compression = *((char *)bih + sizeof(BITMAPINFOHEADER) + 5);
- switch (hc->codec) {
- case CODEC_MSZH:
- switch (hc->compression) {
- case COMP_MSZH:
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Compression enabled.\n");
- break;
- case COMP_MSZH_NOCOMP:
- hc->decomp_size = 0;
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] No compression.\n");
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] Unsupported compression format for MSZH (%d).\n", hc->compression);
- return 0;
- }
- break;
- case CODEC_ZLIB:
-#ifdef HAVE_ZLIB
- switch (hc->compression) {
- case COMP_ZLIB_HISPEED:
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] High speed compression.\n");
- break;
- case COMP_ZLIB_HICOMP:
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] High compression.\n");
- break;
- case COMP_ZLIB_NORMAL:
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Normal compression.\n");
- break;
- default:
- if ((hc->compression < Z_NO_COMPRESSION) || (hc->compression > Z_BEST_COMPRESSION)) {
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Unusupported compression level for ZLIB: (%d).\n", hc->compression);
- return 0;
- }
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Compression level for ZLIB: (%d).\n", hc->compression);
- }
-#else
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] Zlib support not compiled.\n");
- return 0;
-#endif
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] BUG! Unknown codec in compression switch.\n");
- return 0;
- }
-
- /* Allocate decompression buffer */
- /* 4*8 max oveflow space for mszh decomp algorithm */
- if (hc->decomp_size) {
- if ((hc->decomp_buf = malloc(hc->decomp_size+4*8)) == NULL) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] Can't allocate decompression buffer.\n");
- return 0;
- }
- }
-
- /* Detect flags */
- hc->flags = *((char *)bih + sizeof(BITMAPINFOHEADER) + 6);
- if (hc->flags & FLAG_MULTITHREAD)
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Multithread encoder flag set.\n");
- if (hc->flags & FLAG_NULLFRAME)
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] Nullframe insertion flag set.\n");
- if ((hc->codec == CODEC_ZLIB) && (hc->flags & FLAG_PNGFILTER))
- mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[LCL] PNG filter flag set.\n");
- if (hc->flags & FLAGMASK_UNUSED)
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] Unknown flag set (%d).\n", hc->flags);
-
- /* If needed init zlib */
- if (hc->codec == CODEC_ZLIB) {
-#ifdef HAVE_ZLIB
- hc->zstream.zalloc = Z_NULL;
- hc->zstream.zfree = Z_NULL;
- hc->zstream.opaque = Z_NULL;
- zret = inflateInit(&(hc->zstream));
- if (zret != Z_OK) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] Inflate init error: %d\n", zret);
- return 0;
- }
-#else
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] Zlib support not compiled.\n");
- return 0;
-#endif
- }
-
- /*
- * Initialize video output device
- */
- vo_ret = mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_BGR24);
-
- return vo_ret;
-}
-
-
-
-
-/*
- *
- * Uninit LCL decoder
- *
- */
-static void uninit(sh_video_t *sh)
-{
- lcl_context_t *hc = (lcl_context_t *) sh->context; // Decoder context
-
- if (sh->context) {
-#ifdef HAVE_ZLIB
- inflateEnd(&hc->zstream);
-#endif
- free(sh->context);
- }
-}
-
-
-
-inline unsigned char fix (int pix14)
-{
- int tmp;
-
- tmp = (pix14 + 0x80000) >> 20;
- if (tmp < 0)
- return 0;
- if (tmp > 255)
- return 255;
- return tmp;
-}
-
-
-
-inline unsigned char get_b (unsigned char yq, signed char bq)
-{
- return fix((yq << 20) + bq * 1858076);
-}
-
-
-
-inline unsigned char get_g (unsigned char yq, signed char bq, signed char rq)
-{
- return fix((yq << 20) - bq * 360857 - rq * 748830);
-}
-
-
-
-inline unsigned char get_r (unsigned char yq, signed char rq)
-{
- return fix((yq << 20) + rq * 1470103);
-}
-
-
-int mszh_decomp(unsigned char * srcptr, int srclen, unsigned char * destptr);
-
-/*
- *
- * Decode a frame
- *
- */
-static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags)
-{
- mp_image_t* mpi;
- int pixel_ptr;
- int row, col;
- unsigned char *encoded = (unsigned char *)data;
- lcl_context_t *hc = (lcl_context_t *) sh->context; // Decoder context
- unsigned char *outptr;
- int width = sh->disp_w; // Real image width
- int height = sh->disp_h; // Real image height
-#ifdef HAVE_ZLIB
- int zret; // Zlib return code
-#endif
- unsigned int mszh_dlen;
- unsigned char yq, y1q, uq, vq;
- int uqvq;
- unsigned int mthread_inlen, mthread_outlen;
-
- // Skipped frame
- if(len <= 0)
- return NULL;
-
- /* Get output image buffer */
- mpi=mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, 0, sh->disp_w, sh->disp_h);
- if (!mpi) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Can't allocate mpi image for lcl codec.\n");
- return NULL;
- }
-
- outptr = mpi->planes[0]; // Output image pointer
-
-
- /* Decompress frame */
- switch (hc->codec) {
- case CODEC_MSZH:
- switch (hc->compression) {
- case COMP_MSZH:
- if (hc->flags & FLAG_MULTITHREAD) {
- mthread_inlen = *((unsigned int*)encoded);
- mthread_outlen = *((unsigned int*)(encoded+4));
- mszh_dlen = mszh_decomp(encoded + 8, mthread_inlen, hc->decomp_buf);
- if (mthread_outlen != mszh_dlen) {
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] MSZH: mthread1 decoded size differs (%d != %d)\n",
- mthread_outlen, mszh_dlen);
- }
- mszh_dlen = mszh_decomp(encoded + 8 + mthread_inlen, len - mthread_inlen,
- hc->decomp_buf + mthread_outlen);
- if ((hc->decomp_size - mthread_outlen) != mszh_dlen) {
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] MSZH: mthread2 decoded size differs (%d != %d)\n",
- hc->decomp_size - mthread_outlen, mszh_dlen);
- }
- encoded = hc->decomp_buf;
- len = hc->decomp_size;
- } else {
- mszh_dlen = mszh_decomp(encoded, len, hc->decomp_buf);
- if (hc->decomp_size != mszh_dlen) {
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] MSZH: decoded size differs (%d != %d)\n",
- hc->decomp_size, mszh_dlen);
- }
- encoded = hc->decomp_buf;
- len = mszh_dlen;
- }
- break;
- case COMP_MSZH_NOCOMP:
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] BUG! Unknown MSZH compression in frame decoder.\n");
- return 0;
- }
- break;
- case CODEC_ZLIB:
-#ifdef HAVE_ZLIB
- zret = inflateReset(&(hc->zstream));
- if (zret != Z_OK) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] ZLIB: inflate reset error: %d\n", zret);
- return 0;
- }
- if (hc->flags & FLAG_MULTITHREAD) {
- mthread_inlen = *((unsigned int*)encoded);
- mthread_outlen = *((unsigned int*)(encoded+4));
- hc->zstream.next_in = encoded + 8;
- hc->zstream.avail_in = mthread_inlen;
- hc->zstream.next_out = hc->decomp_buf;
- hc->zstream.avail_out = mthread_outlen;
- zret = inflate(&(hc->zstream), Z_FINISH);
- if ((zret != Z_OK) && (zret != Z_STREAM_END)) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] ZLIB: mthread1 inflate error: %d\n", zret);
- return 0;
- }
- if (mthread_outlen != (unsigned int)(hc->zstream.total_out)) {
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] ZLIB: mthread1 decoded size differs (%u != %lu)\n",
- mthread_outlen, hc->zstream.total_out);
- }
- zret = inflateReset(&(hc->zstream));
- if (zret != Z_OK) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] ZLIB: mthread2 inflate reset error: %d\n", zret);
- return 0;
- }
- hc->zstream.next_in = encoded + 8 + mthread_inlen;
- hc->zstream.avail_in = len - mthread_inlen;
- hc->zstream.next_out = hc->decomp_buf + mthread_outlen;
- hc->zstream.avail_out = mthread_outlen;
- zret = inflate(&(hc->zstream), Z_FINISH);
- if ((zret != Z_OK) && (zret != Z_STREAM_END)) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] ZLIB: mthread2 inflate error: %d\n", zret);
- return 0;
- }
- if ((hc->decomp_size - mthread_outlen) != (unsigned int)(hc->zstream.total_out)) {
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] ZLIB: mthread2 decoded size differs (%d != %lu)\n",
- hc->decomp_size - mthread_outlen, hc->zstream.total_out);
- }
- } else {
- hc->zstream.next_in = data;
- hc->zstream.avail_in = len;
- hc->zstream.next_out = hc->decomp_buf;
- hc->zstream.avail_out = hc->decomp_size;
- zret = inflate(&(hc->zstream), Z_FINISH);
- if ((zret != Z_OK) && (zret != Z_STREAM_END)) {
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] ZLIB: inflate error: %d\n", zret);
- return 0;
- }
- if (hc->decomp_size != (unsigned int)(hc->zstream.total_out)) {
- mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[LCL] ZLIB: decoded size differs (%d != %lu)\n",
- hc->decomp_size, hc->zstream.total_out);
- }
- }
- encoded = hc->decomp_buf;
- len = hc->decomp_size;;
-#else
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] BUG! Zlib support not compiled in frame decoder.\n");
- return 0;
-#endif
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] BUG! Unknown codec in frame decoder compression switch.\n");
- return 0;
- }
-
-
- /* Apply PNG filter */
- if ((hc->codec == CODEC_ZLIB) && (hc->flags & FLAG_PNGFILTER)) {
- switch (hc->imgtype) {
- case IMGTYPE_YUV111:
- case IMGTYPE_RGB24:
- for (row = 0; row < height; row++) {
- pixel_ptr = row * width * 3;
- yq = encoded[pixel_ptr++];
- uqvq = encoded[pixel_ptr++];
- uqvq+=(encoded[pixel_ptr++] << 8);
- for (col = 1; col < width; col++) {
- encoded[pixel_ptr] = yq -= encoded[pixel_ptr];
- uqvq -= (encoded[pixel_ptr+1] | (encoded[pixel_ptr+2]<<8));
- encoded[pixel_ptr+1] = (uqvq) & 0xff;
- encoded[pixel_ptr+2] = ((uqvq)>>8) & 0xff;
- pixel_ptr += 3;
- }
- }
- break;
- case IMGTYPE_YUV422:
- for (row = 0; row < height; row++) {
- pixel_ptr = row * width * 2;
- yq = uq = vq =0;
- for (col = 0; col < width/4; col++) {
- encoded[pixel_ptr] = yq -= encoded[pixel_ptr];
- encoded[pixel_ptr+1] = yq -= encoded[pixel_ptr+1];
- encoded[pixel_ptr+2] = yq -= encoded[pixel_ptr+2];
- encoded[pixel_ptr+3] = yq -= encoded[pixel_ptr+3];
- encoded[pixel_ptr+4] = uq -= encoded[pixel_ptr+4];
- encoded[pixel_ptr+5] = uq -= encoded[pixel_ptr+5];
- encoded[pixel_ptr+6] = vq -= encoded[pixel_ptr+6];
- encoded[pixel_ptr+7] = vq -= encoded[pixel_ptr+7];
- pixel_ptr += 8;
- }
- }
- break;
- case IMGTYPE_YUV411:
- for (row = 0; row < height; row++) {
- pixel_ptr = row * width / 2 * 3;
- yq = uq = vq =0;
- for (col = 0; col < width/4; col++) {
- encoded[pixel_ptr] = yq -= encoded[pixel_ptr];
- encoded[pixel_ptr+1] = yq -= encoded[pixel_ptr+1];
- encoded[pixel_ptr+2] = yq -= encoded[pixel_ptr+2];
- encoded[pixel_ptr+3] = yq -= encoded[pixel_ptr+3];
- encoded[pixel_ptr+4] = uq -= encoded[pixel_ptr+4];
- encoded[pixel_ptr+5] = vq -= encoded[pixel_ptr+5];
- pixel_ptr += 6;
- }
- }
- break;
- case IMGTYPE_YUV211:
- for (row = 0; row < height; row++) {
- pixel_ptr = row * width * 2;
- yq = uq = vq =0;
- for (col = 0; col < width/2; col++) {
- encoded[pixel_ptr] = yq -= encoded[pixel_ptr];
- encoded[pixel_ptr+1] = yq -= encoded[pixel_ptr+1];
- encoded[pixel_ptr+2] = uq -= encoded[pixel_ptr+2];
- encoded[pixel_ptr+3] = vq -= encoded[pixel_ptr+3];
- pixel_ptr += 4;
- }
- }
- break;
- case IMGTYPE_YUV420:
- for (row = 0; row < height/2; row++) {
- pixel_ptr = row * width * 3;
- yq = y1q = uq = vq =0;
- for (col = 0; col < width/2; col++) {
- encoded[pixel_ptr] = yq -= encoded[pixel_ptr];
- encoded[pixel_ptr+1] = yq -= encoded[pixel_ptr+1];
- encoded[pixel_ptr+2] = y1q -= encoded[pixel_ptr+2];
- encoded[pixel_ptr+3] = y1q -= encoded[pixel_ptr+3];
- encoded[pixel_ptr+4] = uq -= encoded[pixel_ptr+4];
- encoded[pixel_ptr+5] = vq -= encoded[pixel_ptr+5];
- pixel_ptr += 6;
- }
- }
- break;
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] BUG! Unknown imagetype in pngfilter switch.\n");
- return 0;
- }
- }
-
- /* Convert colorspace */
- switch (hc->imgtype) {
- case IMGTYPE_YUV111:
- for (row = height - 1; row >= 0; row--) {
- pixel_ptr = row * mpi->stride[0];
- for (col = 0; col < width; col++) {
- outptr[pixel_ptr++] = get_b(encoded[0], encoded[1]);
- outptr[pixel_ptr++] = get_g(encoded[0], encoded[1], encoded[2]);
- outptr[pixel_ptr++] = get_r(encoded[0], encoded[2]);
- encoded += 3;
- }
- }
- break;
- case IMGTYPE_YUV422:
- for (row = height - 1; row >= 0; row--) {
- pixel_ptr = row * mpi->stride[0];
- for (col = 0; col < width/4; col++) {
- outptr[pixel_ptr++] = get_b(encoded[0], encoded[4]);
- outptr[pixel_ptr++] = get_g(encoded[0], encoded[4], encoded[6]);
- outptr[pixel_ptr++] = get_r(encoded[0], encoded[6]);
- outptr[pixel_ptr++] = get_b(encoded[1], encoded[4]);
- outptr[pixel_ptr++] = get_g(encoded[1], encoded[4], encoded[6]);
- outptr[pixel_ptr++] = get_r(encoded[1], encoded[6]);
- outptr[pixel_ptr++] = get_b(encoded[2], encoded[5]);
- outptr[pixel_ptr++] = get_g(encoded[2], encoded[5], encoded[7]);
- outptr[pixel_ptr++] = get_r(encoded[2], encoded[7]);
- outptr[pixel_ptr++] = get_b(encoded[3], encoded[5]);
- outptr[pixel_ptr++] = get_g(encoded[3], encoded[5], encoded[7]);
- outptr[pixel_ptr++] = get_r(encoded[3], encoded[7]);
- encoded += 8;
- }
- }
- break;
- case IMGTYPE_RGB24:
- for (row = height - 1; row >= 0; row--) {
- pixel_ptr = row * mpi->stride[0];
- for (col = 0; col < width; col++) {
- outptr[pixel_ptr++] = encoded[0];
- outptr[pixel_ptr++] = encoded[1];
- outptr[pixel_ptr++] = encoded[2];
- encoded += 3;
- }
- }
- break;
- case IMGTYPE_YUV411:
- for (row = height - 1; row >= 0; row--) {
- pixel_ptr = row * mpi->stride[0];
- for (col = 0; col < width/4; col++) {
- outptr[pixel_ptr++] = get_b(encoded[0], encoded[4]);
- outptr[pixel_ptr++] = get_g(encoded[0], encoded[4], encoded[5]);
- outptr[pixel_ptr++] = get_r(encoded[0], encoded[5]);
- outptr[pixel_ptr++] = get_b(encoded[1], encoded[4]);
- outptr[pixel_ptr++] = get_g(encoded[1], encoded[4], encoded[5]);
- outptr[pixel_ptr++] = get_r(encoded[1], encoded[5]);
- outptr[pixel_ptr++] = get_b(encoded[2], encoded[4]);
- outptr[pixel_ptr++] = get_g(encoded[2], encoded[4], encoded[5]);
- outptr[pixel_ptr++] = get_r(encoded[2], encoded[5]);
- outptr[pixel_ptr++] = get_b(encoded[3], encoded[4]);
- outptr[pixel_ptr++] = get_g(encoded[3], encoded[4], encoded[5]);
- outptr[pixel_ptr++] = get_r(encoded[3], encoded[5]);
- encoded += 6;
- }
- }
- break;
- case IMGTYPE_YUV211:
- for (row = height - 1; row >= 0; row--) {
- pixel_ptr = row * mpi->stride[0];
- for (col = 0; col < width/2; col++) {
- outptr[pixel_ptr++] = get_b(encoded[0], encoded[2]);
- outptr[pixel_ptr++] = get_g(encoded[0], encoded[2], encoded[3]);
- outptr[pixel_ptr++] = get_r(encoded[0], encoded[3]);
- outptr[pixel_ptr++] = get_b(encoded[1], encoded[2]);
- outptr[pixel_ptr++] = get_g(encoded[1], encoded[2], encoded[3]);
- outptr[pixel_ptr++] = get_r(encoded[1], encoded[3]);
- encoded += 4;
- }
- }
- break;
- case IMGTYPE_YUV420:
- for (row = height / 2 - 1; row >= 0; row--) {
- pixel_ptr = 2 * row * mpi->stride[0];
- for (col = 0; col < width/2; col++) {
- outptr[pixel_ptr] = get_b(encoded[0], encoded[4]);
- outptr[pixel_ptr+1] = get_g(encoded[0], encoded[4], encoded[5]);
- outptr[pixel_ptr+2] = get_r(encoded[0], encoded[5]);
- outptr[pixel_ptr+3] = get_b(encoded[1], encoded[4]);
- outptr[pixel_ptr+4] = get_g(encoded[1], encoded[4], encoded[5]);
- outptr[pixel_ptr+5] = get_r(encoded[1], encoded[5]);
- outptr[pixel_ptr-mpi->stride[0]] = get_b(encoded[2], encoded[4]);
- outptr[pixel_ptr-mpi->stride[0]+1] = get_g(encoded[2], encoded[4], encoded[5]);
- outptr[pixel_ptr-mpi->stride[0]+2] = get_r(encoded[2], encoded[5]);
- outptr[pixel_ptr-mpi->stride[0]+3] = get_b(encoded[3], encoded[4]);
- outptr[pixel_ptr-mpi->stride[0]+4] = get_g(encoded[3], encoded[4], encoded[5]);
- outptr[pixel_ptr-mpi->stride[0]+5] = get_r(encoded[3], encoded[5]);
- pixel_ptr += 6;
- encoded += 6;
- }
- }
- break;
- default:
- mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[LCL] BUG! Unknown imagetype in image decoder.\n");
- return 0;
- }
-
- return mpi;
-}
-
-
-
-int mszh_decomp(unsigned char * srcptr, int srclen, unsigned char * destptr)
-{
- unsigned char *destptr_bak = destptr;
- unsigned char mask = 0;
- unsigned char maskbit = 0;
- unsigned int ofs, cnt;
-
- while (srclen > 0) {
- if (maskbit == 0) {
- mask = *(srcptr++);
- maskbit = 8;
- srclen--;
- continue;
- }
- if ((mask & (1 << (--maskbit))) == 0) {
- *(destptr++) = *(srcptr++);
- *(destptr++) = *(srcptr++);
- *(destptr++) = *(srcptr++);
- *(destptr++) = *(srcptr++);
- srclen -= 4;
- } else {
- ofs = *(srcptr++);
- cnt = *(srcptr++);
- ofs += cnt * 256;;
- cnt = ((cnt >> 3) & 0x1f) + 1;
- ofs &= 0x7ff;
- srclen -= 2;
- cnt *= 4;
- for (; cnt > 0; cnt--) {
- *(destptr) = *(destptr - ofs);
- destptr++;
- }
- }
- }
-
- return (destptr - destptr_bak);
-}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 15:59:08 +0000