diff options
| author | James Almer <jamrial@gmail.com> | 2018-04-23 23:39:54 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2018-04-25 16:45:43 -0300 |
| commit | 0161d91db01ae0b5d516232d92764f5a898cedc6 (patch) | |
| tree | 16bbb4404d124810e8d006ef1135920052cc598e /libavcodec/cbs_mpeg2.c | |
| parent | bd90a2ec04d7b3fc370501731f8978681e254645 (diff) | |
avcodec/cbs_mpeg2: use memcpy when assembling fragments
before:
419022 decicycles in assemble_fragment, 2047 runs, 1 skips
after:
104621 decicycles in assemble_fragment, 2045 runs, 3 skips
Benched with a 2 minutes long 720x480 DVD mpeg2 sample.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavcodec/cbs_mpeg2.c')
| -rw-r--r-- | libavcodec/cbs_mpeg2.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/cbs_mpeg2.c b/libavcodec/cbs_mpeg2.c index bfb64a0851..94b9591b21 100644 --- a/libavcodec/cbs_mpeg2.c +++ b/libavcodec/cbs_mpeg2.c @@ -362,7 +362,7 @@ static int cbs_mpeg2_assemble_fragment(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag) { uint8_t *data; - size_t size, dp, sp; + size_t size, dp; int i; size = 0; @@ -382,8 +382,8 @@ static int cbs_mpeg2_assemble_fragment(CodedBitstreamContext *ctx, data[dp++] = 0; data[dp++] = 1; - for (sp = 0; sp < unit->data_size; sp++) - data[dp++] = unit->data[sp]; + memcpy(data + dp, unit->data, unit->data_size); + dp += unit->data_size; } av_assert0(dp == size); |