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// AV codec id convenience functions
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int mpeg_version(int codec_id);
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#define CODEC_IS_H264(id) (mpeg_version(id) == 5)
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#define CODEC_IS_FFMPEG_MPEG(id) (CODEC_IS_MPEG(id) &&\
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(id != CODEC_ID_MPEG2VIDEO_DVDV))
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#define CODEC_IS_XVMC(codec) (codec && (codec->id == CODEC_ID_MPEG2VIDEO_XVMC ||\