diff options
Diffstat (limited to 'libavformat')
-rw-r--r-- | libavformat/utils.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c index 17ae300a8f..6a0f666a7d 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -4287,6 +4287,28 @@ int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st, av_freep(&key); return ret; + } else if (*spec == 'u') { + AVCodecContext *avctx = st->codec; + int val; + switch (avctx->codec_type) { + case AVMEDIA_TYPE_AUDIO: + val = avctx->sample_rate && avctx->channels; + if (avctx->sample_fmt == AV_SAMPLE_FMT_NONE) + return 0; + break; + case AVMEDIA_TYPE_VIDEO: + val = avctx->width && avctx->height; + if (avctx->pix_fmt == AV_PIX_FMT_NONE) + return 0; + break; + case AVMEDIA_TYPE_UNKNOWN: + val = 0; + break; + default: + val = 1; + break; + } + return avctx->codec_id != AV_CODEC_ID_NONE && val != 0; } else if (!*spec) /* empty specifier, matches everything */ return 1; |