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lavf: Use av_codec_get_tag2() in avformat_query_codec(). 

av_codec_get_tag() can return 0 both in case of error and success.
This commit is contained in:
Carl Eugen Hoyos 2015-05-28 12:31:40 +02:00
parent bcd7bf7eeb
commit 57eecd9e4f
1 changed files with 2 additions and 1 deletions
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3
libavformat/utils.c
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@ -4107,10 +4107,11 @@ int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
int std_compliance)
{
if (ofmt) {
unsigned int codec_tag;
if (ofmt->query_codec)
return ofmt->query_codec(codec_id, std_compliance);
else if (ofmt->codec_tag)
return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
else if (codec_id == ofmt->video_codec ||
codec_id == ofmt->audio_codec ||
codec_id == ofmt->subtitle_codec)