139 lines
4.1 KiB
C
139 lines
4.1 KiB
C
/*
|
|
* copyright (c) 2009 Michael Niedermayer
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <strings.h>
|
|
#include "avformat.h"
|
|
#include "metadata.h"
|
|
|
|
AVMetadataTag *
|
|
av_metadata_get(AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags)
|
|
{
|
|
unsigned int i, j;
|
|
|
|
if(!m)
|
|
return NULL;
|
|
|
|
if(prev) i= prev - m->elems + 1;
|
|
else i= 0;
|
|
|
|
for(; i<m->count; i++){
|
|
const char *s= m->elems[i].key;
|
|
if(flags & AV_METADATA_MATCH_CASE) for(j=0; s[j] == key[j] && key[j]; j++);
|
|
else for(j=0; toupper(s[j]) == toupper(key[j]) && key[j]; j++);
|
|
if(key[j])
|
|
continue;
|
|
if(s[j] && !(flags & AV_METADATA_IGNORE_SUFFIX))
|
|
continue;
|
|
return &m->elems[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int av_metadata_set(AVMetadata **pm, const char *key, const char *value)
|
|
{
|
|
AVMetadata *m= *pm;
|
|
AVMetadataTag *tag= av_metadata_get(m, key, NULL, AV_METADATA_MATCH_CASE);
|
|
|
|
if(!m)
|
|
m=*pm= av_mallocz(sizeof(*m));
|
|
|
|
if(tag){
|
|
av_free(tag->value);
|
|
av_free(tag->key);
|
|
*tag= m->elems[--m->count];
|
|
}else{
|
|
AVMetadataTag *tmp= av_realloc(m->elems, (m->count+1) * sizeof(*m->elems));
|
|
if(tmp){
|
|
m->elems= tmp;
|
|
}else
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
if(value){
|
|
m->elems[m->count].key = av_strdup(key );
|
|
m->elems[m->count].value= av_strdup(value);
|
|
m->count++;
|
|
}
|
|
if(!m->count) {
|
|
av_free(m->elems);
|
|
av_freep(pm);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void av_metadata_free(AVMetadata **pm)
|
|
{
|
|
AVMetadata *m= *pm;
|
|
|
|
if(m){
|
|
while(m->count--){
|
|
av_free(m->elems[m->count].key);
|
|
av_free(m->elems[m->count].value);
|
|
}
|
|
av_free(m->elems);
|
|
}
|
|
av_freep(pm);
|
|
}
|
|
|
|
static void metadata_conv(AVMetadata **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;
|
|
AVMetadataTag *mtag = NULL;
|
|
AVMetadata *dst = NULL;
|
|
const char *key;
|
|
|
|
while((mtag=av_metadata_get(*pm, "", mtag, AV_METADATA_IGNORE_SUFFIX))) {
|
|
key = mtag->key;
|
|
if (s_conv != d_conv) {
|
|
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_metadata_set(&dst, key, mtag->value);
|
|
}
|
|
av_metadata_free(pm);
|
|
*pm = dst;
|
|
}
|
|
|
|
void av_metadata_conv(AVFormatContext *ctx, const AVMetadataConv *d_conv,
|
|
const AVMetadataConv *s_conv)
|
|
{
|
|
int i;
|
|
metadata_conv(&ctx->metadata, d_conv, s_conv);
|
|
for (i=0; i<ctx->nb_streams ; i++)
|
|
metadata_conv(&ctx->streams [i]->metadata, d_conv, s_conv);
|
|
for (i=0; i<ctx->nb_chapters; i++)
|
|
metadata_conv(&ctx->chapters[i]->metadata, d_conv, s_conv);
|
|
for (i=0; i<ctx->nb_programs; i++)
|
|
metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv);
|
|
}
|