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Code Issues Releases Activity

RES_SM in WMV3 is really two flags, so split it in decoder

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Originally committed as revision 25208 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2010-09-26 13:54:35 +00:00
parent b0f65613ac
commit 10f93363b7
2 changed files with 10 additions and 4 deletions
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11
libavcodec/vc1.c
View File

@ -306,11 +306,16 @@ int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitConte
{
v->zz_8x4 = wmv2_scantableA;
v->zz_4x8 = wmv2_scantableB;
v->res_sm = get_bits(gb, 2); //reserved
if (v->res_sm)
v->res_y411 = get_bits1(gb);
v->res_sprite = get_bits1(gb);
if (v->res_y411)
{
av_log(avctx, AV_LOG_ERROR,
"Reserved RES_SM=%i is forbidden\n", v->res_sm);
"Old interlaced mode is not supported\n");
return -1;
}
if (v->res_sprite) {
av_log(avctx, AV_LOG_ERROR, "WMVP is not supported\n");
return -1;
}
}

3
libavcodec/vc1.h
View File

@ -160,7 +160,8 @@ typedef struct VC1Context{
/** Simple/Main Profile sequence header */
//@{
int res_sm; ///< reserved, 2b
int res_sprite; ///< reserved, sprite mode
int res_y411; ///< reserved, old interlaced mode
int res_x8; ///< reserved
int multires; ///< frame-level RESPIC syntax element present
int res_fasttx; ///< reserved, always 1