void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv,
const AVMetadataConv *s_conv)
{
/* TODO: use binary search to look up the two conversion tables
if the tables are getting big enough that it would matter speed wise */
const AVMetadataConv *sc, *dc;
AVDictionaryEntry *mtag = NULL, *tag;
AVDictionary *dst = NULL;
const char *key;
if (d_conv == s_conv)
return;
while ((mtag = av_dict_get(*pm, "", mtag, AV_DICT_IGNORE_SUFFIX))) {
key = mtag->key;
if (s_conv)
for (sc=s_conv; sc->native; sc++)
if (!strcasecmp(key, sc->native)) {
key = sc->generic;
break;
}
if (d_conv)
for (dc=d_conv; dc->native; dc++)
if (!strcasecmp(key, dc->generic)) {
key = dc->native;
break;
}
av_dict_set_custom(&dst, &tag, mtag->type, key, mtag->value, mtag->len, 0);
av_metadata_copy_attributes(tag, mtag);
}
av_dict_free(pm);
*pm = dst;
}
void av_metadata_copy(AVMetadata **dst, AVMetadata *src, int flags)
{
AVMetadataTag *t = NULL, *tag;
while ((t = av_metadata_get(src, "", t, AV_METADATA_IGNORE_SUFFIX))) {
av_metadata_set_custom(dst, &tag, t->type, t->key,
t->value, t->len, flags);
if (tag)
av_metadata_copy_attributes(tag, t);
}
}
