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/*
* 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 "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_IGNORE_CASE) for(j=0; toupper(s[j]) == toupper(key[j]) && key[j]; j++);
else for(j=0; s[j] == 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, AVMetadataTag elem)
{
AVMetadata *m= *pm;
AVMetadataTag *tag= av_metadata_get(m, elem.key, NULL, 0);
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(elem.value){
elem.key = av_strdup(elem.key );
elem.value= av_strdup(elem.value);
m->elems[m->count++]= elem;
}
if(!m->count)
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);
}
#if LIBAVFORMAT_VERSION_MAJOR < 53
#define FILL_METADATA(s, key, value) { \
if (value && *value && \
!av_metadata_get(s->metadata, #key, NULL, AV_METADATA_IGNORE_CASE)) \
av_metadata_set(&s->metadata, (const AVMetadataTag){#key, value}); \
}
#define FILL_METADATA_STR(s, key) FILL_METADATA(s, key, s->key)
#define FILL_METADATA_INT(s, key) { \
char number[10]; \
snprintf(number, sizeof(number), "%d", s->key); \
if(s->key) FILL_METADATA(s, key, number) }
void ff_metadata_sync_compat(AVFormatContext *ctx)
{
int i;
FILL_METADATA_STR(ctx, title);
FILL_METADATA_STR(ctx, author);
FILL_METADATA_STR(ctx, copyright);
FILL_METADATA_STR(ctx, comment);
FILL_METADATA_STR(ctx, album);
FILL_METADATA_INT(ctx, year);
FILL_METADATA_INT(ctx, track);
FILL_METADATA_STR(ctx, genre);
for (i=0; i<ctx->nb_chapters; i++)
FILL_METADATA_STR(ctx->chapters[i], title);
for (i=0; i<ctx->nb_programs; i++) {
FILL_METADATA_STR(ctx->programs[i], name);
FILL_METADATA_STR(ctx->programs[i], provider_name);
}
for (i=0; i<ctx->nb_streams; i++) {
FILL_METADATA_STR(ctx->streams[i], language);
FILL_METADATA_STR(ctx->streams[i], filename);
}
}
#endif
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