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| author | Ronald S. Bultje <rsbultje@gmail.com> | 2013-02-17 14:52:24 -0800 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2013-02-19 22:34:14 +0200 |
| commit | 7ebfb466aec2c4628fcd42a72b29034efcaba4bc (patch) | |
| tree | de856f2702d6366c7d5b22993d10a1fff2dca823 /libavcodec/h264.h | |
| parent | 9918f57dcfc276cc8ecad3705875ca5877980c7a (diff) | |
| download | ffmpeg-7ebfb466aec2c4628fcd42a72b29034efcaba4bc.tar.gz | |
h264: Don't store intra pcm samples in h->mb
Instead, keep them in the bitstream buffer until we read them verbatim,
this saves a memcpy() and a subsequent clearing of the target buffer.
decode_cabac+decode_mb for a sample file (CAPM3_Sony_D.jsv) goes from
6121.4 to 6095.5 cycles, i.e. 26 cycles faster.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/h264.h')
| -rw-r--r-- | libavcodec/h264.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/h264.h b/libavcodec/h264.h index 45c134e877..426f8b3491 100644 --- a/libavcodec/h264.h +++ b/libavcodec/h264.h @@ -416,6 +416,7 @@ typedef struct H264Context { GetBitContext *intra_gb_ptr; GetBitContext *inter_gb_ptr; + const uint8_t *intra_pcm_ptr; DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2]; ///< as a dct coeffecient is int32_t in high depth, we need to reserve twice the space. DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2]; int16_t mb_padding[256 * 2]; ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either check that i is not too large or ensure that there is some unused stuff after mb |