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author | James Almer <jamrial@gmail.com> | 2018-03-05 11:04:59 -0300 |
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committer | James Almer <jamrial@gmail.com> | 2018-03-05 11:44:51 -0300 |
commit | df3a2ff7670a76c808fa015559b867aecbbdcd54 (patch) | |
tree | 506f724c1d1662a8269b21bafed66843dc30c43b /libavcodec/cbs_mpeg2.c | |
parent | 69995a94d8409a704361dce9bc16ede7f88bdf1a (diff) | |
download | ffmpeg-df3a2ff7670a76c808fa015559b867aecbbdcd54.tar.gz |
avcodec/cbs: use a reference to the assembled CodedBitstreamFragment buffer when writing packets
This saves one malloc + memcpy per packet
The CodedBitstreamFragment buffer is padded to follow the requirements
of AVPacket.
Reviewed-by: jkqxz
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavcodec/cbs_mpeg2.c')
-rw-r--r-- | libavcodec/cbs_mpeg2.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/cbs_mpeg2.c b/libavcodec/cbs_mpeg2.c index 5bb2e1e107..bfb64a0851 100644 --- a/libavcodec/cbs_mpeg2.c +++ b/libavcodec/cbs_mpeg2.c @@ -369,7 +369,7 @@ static int cbs_mpeg2_assemble_fragment(CodedBitstreamContext *ctx, for (i = 0; i < frag->nb_units; i++) size += 3 + frag->units[i].data_size; - frag->data_ref = av_buffer_alloc(size); + frag->data_ref = av_buffer_alloc(size + AV_INPUT_BUFFER_PADDING_SIZE); if (!frag->data_ref) return AVERROR(ENOMEM); data = frag->data_ref->data; @@ -388,6 +388,7 @@ static int cbs_mpeg2_assemble_fragment(CodedBitstreamContext *ctx, av_assert0(dp == size); + memset(data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE); frag->data = data; frag->data_size = size; |