ffmpeg/libavformat/metadata_compat.c

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/*
* Copyright (c) 2009 Aurelien Jacobs <aurel@gnuage.org>
*
* 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"
#include "libavutil/avstring.h"
#if LIBAVFORMAT_VERSION_MAJOR < 53
#define SIZE_OFFSET(x) sizeof(((AVFormatContext*)0)->x),offsetof(AVFormatContext,x)
static const struct {
const char name[16];
int size;
int offset;
} compat_tab[] = {
{ "title", SIZE_OFFSET(title) },
{ "author", SIZE_OFFSET(author) },
{ "copyright", SIZE_OFFSET(copyright) },
{ "comment", SIZE_OFFSET(comment) },
{ "album", SIZE_OFFSET(album) },
{ "year", SIZE_OFFSET(year) },
{ "track", SIZE_OFFSET(track) },
{ "genre", SIZE_OFFSET(genre) },
{ "artist", SIZE_OFFSET(author) },
{ "creator", SIZE_OFFSET(author) },
{ "written_by", SIZE_OFFSET(author) },
{ "lead_performer", SIZE_OFFSET(author) },
{ "description", SIZE_OFFSET(comment) },
{ "albumtitle", SIZE_OFFSET(album) },
{ "date_written", SIZE_OFFSET(year) },
{ "date_released", SIZE_OFFSET(year) },
{ "tracknumber", SIZE_OFFSET(track) },
{ "part_number", SIZE_OFFSET(track) },
};
void ff_metadata_demux_compat(AVFormatContext *ctx)
{
AVMetadata *m;
int i, j;
if ((m = ctx->metadata))
for (j=0; j<m->count; j++)
for (i=0; i<FF_ARRAY_ELEMS(compat_tab); i++)
if (!strcasecmp(m->elems[j].key, compat_tab[i].name)) {
int *ptr = (int *)((char *)ctx+compat_tab[i].offset);
if (*ptr) continue;
if (compat_tab[i].size > sizeof(int))
av_strlcpy((char *)ptr, m->elems[j].value, compat_tab[i].size);
else
*ptr = atoi(m->elems[j].value);
}
for (i=0; i<ctx->nb_chapters; i++)
if ((m = ctx->chapters[i]->metadata))
for (j=0; j<m->count; j++)
if (!strcasecmp(m->elems[j].key, "title")) {
av_free(ctx->chapters[i]->title);
ctx->chapters[i]->title = av_strdup(m->elems[j].value);
}
for (i=0; i<ctx->nb_programs; i++)
if ((m = ctx->programs[i]->metadata))
for (j=0; j<m->count; j++) {
if (!strcasecmp(m->elems[j].key, "name")) {
av_free(ctx->programs[i]->name);
ctx->programs[i]->name = av_strdup(m->elems[j].value);
}
if (!strcasecmp(m->elems[j].key, "provider_name")) {
av_free(ctx->programs[i]->provider_name);
ctx->programs[i]->provider_name = av_strdup(m->elems[j].value);
}
}
for (i=0; i<ctx->nb_streams; i++)
if ((m = ctx->streams[i]->metadata))
for (j=0; j<m->count; j++) {
if (!strcasecmp(m->elems[j].key, "language"))
av_strlcpy(ctx->streams[i]->language, m->elems[j].value, 4);
if (!strcasecmp(m->elems[j].key, "filename")) {
av_free(ctx->streams[i]->filename);
ctx->streams[i]->filename= av_strdup(m->elems[j].value);
}
}
}
#define FILL_METADATA(s, key, value) { \
if (value && *value && !av_metadata_get(s->metadata, #key, NULL, 0)) \
av_metadata_set(&s->metadata, #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_mux_compat(AVFormatContext *ctx)
{
int i;
if (ctx->metadata && ctx->metadata->count > 0)
return;
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 /* LIBAVFORMAT_VERSION_MAJOR < 53 */