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| author | Mike Melanson <mike@multimedia.cx> | 2005-05-21 01:12:41 +0000 |
|---|---|---|
| committer | Mike Melanson <mike@multimedia.cx> | 2005-05-21 01:12:41 +0000 |
| commit | 7f9926a45eeab7e25b9e381fc35b1342fde826cb (patch) | |
| tree | f83017488932d78d9b530aabcd3c054df8906aa8 /libavcodec/vp3.c | |
| parent | 3f2bf07ba72bf4caf24cc567916f146b7baaa7c0 (diff) | |
| download | ffmpeg-7f9926a45eeab7e25b9e381fc35b1342fde826cb.tar.gz | |
another bitstream extraction to optimize: fixed-length motion vectors
Originally committed as revision 4286 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/vp3.c')
| -rw-r--r-- | libavcodec/vp3.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 1f0718e3d7..160dcfb5a8 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -1540,9 +1540,15 @@ static int unpack_vectors(Vp3DecodeContext *s, GetBitContext *gb) motion_y[0] = get_motion_vector_vlc(gb); #endif } else { +#if 1 + motion_x[0] = fixed_motion_vector_table[get_bits(gb, 6)]; + motion_y[0] = fixed_motion_vector_table[get_bits(gb, 6)]; +#else motion_x[0] = get_motion_vector_fixed(gb); motion_y[0] = get_motion_vector_fixed(gb); +#endif } + for (k = 1; k < 6; k++) { motion_x[k] = motion_x[0]; motion_y[k] = motion_y[0]; @@ -1572,8 +1578,13 @@ static int unpack_vectors(Vp3DecodeContext *s, GetBitContext *gb) motion_y[k] = get_motion_vector_vlc(gb); #endif } else { +#if 1 + motion_x[k] = fixed_motion_vector_table[get_bits(gb, 6)]; + motion_y[k] = fixed_motion_vector_table[get_bits(gb, 6)]; +#else motion_x[k] = get_motion_vector_fixed(gb); motion_y[k] = get_motion_vector_fixed(gb); +#endif } motion_x[4] += motion_x[k]; motion_y[4] += motion_y[k]; |