ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinha...@outlook.com> | Thu Jun 13 15:45:19 2024 +0200| [9933dfe103166c43569a3b5bd4649b2e7fcefa0a] | committer: Andreas Rheinhardt
avcodec/h261dec: Simplify decoding motion vectors Don't use a LUT to negate followed by a conditional ordinary negation immediately thereafter. Instead fold the two. Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9933dfe103166c43569a3b5bd4649b2e7fcefa0a --- libavcodec/h261dec.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/libavcodec/h261dec.c b/libavcodec/h261dec.c index 6df8588bb6..852de8d535 100644 --- a/libavcodec/h261dec.c +++ b/libavcodec/h261dec.c @@ -208,10 +208,6 @@ static int h261_decode_mb_skipped(H261DecContext *h, int mba1, int mba2) return 0; } -static const int mvmap[17] = { - 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16 -}; - static int decode_mv_component(GetBitContext *gb, int v) { int mv_diff = get_vlc2(gb, h261_mv_vlc, H261_MV_VLC_BITS, 2); @@ -220,9 +216,7 @@ static int decode_mv_component(GetBitContext *gb, int v) if (mv_diff < 0) return v; - mv_diff = mvmap[mv_diff]; - - if (mv_diff && !get_bits1(gb)) + if (mv_diff && get_bits1(gb)) mv_diff = -mv_diff; v += mv_diff; _______________________________________________ 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".
