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av_common: add comment about using now-deprecated libavcodec field 

FFmpeg and Libav have the stupid practice of replacing and deprecating
API symbols on the same day. So with FFmpeg git, this is useless and
will print a compile time warning, while it's required with all stable
releases, and might lead to decoding errors with xvid/avi (apparently).

Add a comment before someone writes a patch and I have to explain it all
over again.
This commit is contained in:
wm4 2015-01-30 14:27:43 +01:00
parent 697309fc48
commit 5f7de39942
1 changed files with 2 additions and 1 deletions
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3
common/av_common.c
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@ -55,7 +55,6 @@ void mp_copy_lav_codec_headers(AVCodecContext *avctx, AVCodecContext *st)
{
mp_lavc_set_extradata(avctx, st->extradata, st->extradata_size);
avctx->codec_tag = st->codec_tag;
avctx->stream_codec_tag = st->stream_codec_tag;
avctx->bit_rate = st->bit_rate;
avctx->width = st->width;
avctx->height = st->height;
@ -67,6 +66,8 @@ void mp_copy_lav_codec_headers(AVCodecContext *avctx, AVCodecContext *st)
avctx->block_align = st->block_align;
avctx->channel_layout = st->channel_layout;
avctx->bits_per_coded_sample = st->bits_per_coded_sample;
// Required in FFmpeg 2.5.x / Libav 11, deprecated afterwards.
avctx->stream_codec_tag = st->stream_codec_tag;
}
// We merely pass-through our PTS/DTS as an int64_t; libavcodec won't use it.