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cmdutils: allow matching by metadata in stream specifiers

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Anton Khirnov
2014-08-12 16:51:28 +00:00
parent 8ddc32629a
commit 481a366749
4 changed files with 36 additions and 0 deletions
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23
cmdutils.c
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@ -1536,6 +1536,29 @@ int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
spec += 2;
stream_id = strtol(spec, &endptr, 0);
return stream_id == st->id;
} else if (*spec == 'm' && *(spec + 1) == ':') {
AVDictionaryEntry *tag;
char *key, *val;
int ret;
spec += 2;
val = strchr(spec, ':');
key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
if (!key)
return AVERROR(ENOMEM);
tag = av_dict_get(st->metadata, key, NULL, 0);
if (tag) {
if (!val || !strcmp(tag->value, val + 1))
ret = 1;
else
ret = 0;
} else
ret = 0;
av_freep(&key);
return ret;
} else if (!*spec) /* empty specifier, matches everything */
return 1;