ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinha...@outlook.com> | Wed Apr 30 15:54:50 2025 +0200| [dfb4477191d53d4e28a9d2979a197d169c5928da] | committer: Andreas Rheinhardt
avcodec/mpeg4videodec: Don't set chroma matrices unnecessarily Only the studio profile uses chroma_inter/intra matrices; the ordinary profile has only inter/intra matrices. And our code (namely the MPEG-2 unquantize functions) only use these two matrices (the MPEG-2 decoder unquantizes on its own while parsing). Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dfb4477191d53d4e28a9d2979a197d169c5928da --- libavcodec/mpeg4videodec.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index ad2dfbd0fb..1ece371bdb 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -2787,14 +2787,12 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) last = v; j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; s->intra_matrix[j] = last; - s->chroma_intra_matrix[j] = last; } /* replicate last value */ for (; i < 64; i++) { int j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; s->intra_matrix[j] = last; - s->chroma_intra_matrix[j] = last; } } @@ -2814,14 +2812,12 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) last = v; j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; s->inter_matrix[j] = v; - s->chroma_inter_matrix[j] = v; } /* replicate last value */ for (; i < 64; i++) { int j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; s->inter_matrix[j] = last; - s->chroma_inter_matrix[j] = last; } } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
