diff options
| author | Ronald S. Bultje <rsbultje@gmail.com> | 2013-02-17 14:52:24 -0800 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-02-18 01:21:23 +0100 |
| commit | c63f9fb37a7b7da03bed6d79115f7f2e36607808 (patch) | |
| tree | f405ac2af54069fd224ea5a06c071a023869efff /libavcodec/h264.c | |
| parent | 54b2bddd22fb32a67038848b8d2394bee671b143 (diff) | |
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: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/h264.c')
| -rw-r--r-- | libavcodec/h264.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index 0644dadbb1..d4e5d25ca9 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -1528,7 +1528,7 @@ static int decode_update_thread_context(AVCodecContext *dst, for (i = 0; i < MAX_PPS_COUNT; i++) av_freep(h->pps_buffers + i); - memcpy(h, h1, offsetof(H264Context, mb)); + memcpy(h, h1, offsetof(H264Context, intra_pcm_ptr)); memcpy(&h->cabac, &h1->cabac, sizeof(H264Context) - offsetof(H264Context, cabac)); av_assert0(&h->cabac == &h->mb_padding + 1); |