mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-28 20:26:14 +02:00
131 lines
5.0 KiB
C
131 lines
5.0 KiB
C
/*
|
|
* VorbisComment writer
|
|
* Copyright (c) 2009 James Darnley
|
|
*
|
|
* 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 "avformat.h"
|
|
#include "metadata.h"
|
|
#include "vorbiscomment.h"
|
|
#include "libavcodec/bytestream.h"
|
|
#include "libavutil/dict.h"
|
|
|
|
/**
|
|
* VorbisComment metadata conversion mapping.
|
|
* from Ogg Vorbis I format specification: comment field and header specification
|
|
* http://xiph.org/vorbis/doc/v-comment.html
|
|
*/
|
|
const AVMetadataConv ff_vorbiscomment_metadata_conv[] = {
|
|
{ "ALBUMARTIST", "album_artist"},
|
|
{ "TRACKNUMBER", "track" },
|
|
{ "DISCNUMBER", "disc" },
|
|
{ "DESCRIPTION", "comment" },
|
|
{ 0 }
|
|
};
|
|
|
|
int64_t ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string,
|
|
AVChapter **chapters, unsigned int nb_chapters)
|
|
{
|
|
int64_t len = 8;
|
|
len += strlen(vendor_string);
|
|
if (chapters && nb_chapters) {
|
|
for (int i = 0; i < nb_chapters; i++) {
|
|
AVDictionaryEntry *tag = NULL;
|
|
len += 4 + 12 + 1 + 10;
|
|
while ((tag = av_dict_get(chapters[i]->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
|
|
int64_t len1 = !strcmp(tag->key, "title") ? 4 : strlen(tag->key);
|
|
len += 4 + 10 + len1 + 1 + strlen(tag->value);
|
|
}
|
|
}
|
|
}
|
|
if (m) {
|
|
AVDictionaryEntry *tag = NULL;
|
|
while ((tag = av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
|
|
len += 4 +strlen(tag->key) + 1 + strlen(tag->value);
|
|
}
|
|
}
|
|
return len;
|
|
}
|
|
|
|
int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m,
|
|
const char *vendor_string,
|
|
AVChapter **chapters, unsigned int nb_chapters)
|
|
{
|
|
int cm_count = 0;
|
|
bytestream_put_le32(p, strlen(vendor_string));
|
|
bytestream_put_buffer(p, vendor_string, strlen(vendor_string));
|
|
if (chapters && nb_chapters) {
|
|
for (int i = 0; i < nb_chapters; i++) {
|
|
cm_count += av_dict_count(chapters[i]->metadata) + 1;
|
|
}
|
|
}
|
|
if (*m) {
|
|
int count = av_dict_count(*m) + cm_count;
|
|
AVDictionaryEntry *tag = NULL;
|
|
bytestream_put_le32(p, count);
|
|
while ((tag = av_dict_get(*m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
|
|
int64_t len1 = strlen(tag->key);
|
|
int64_t len2 = strlen(tag->value);
|
|
if (len1+1+len2 > UINT32_MAX)
|
|
return AVERROR(EINVAL);
|
|
bytestream_put_le32(p, len1+1+len2);
|
|
bytestream_put_buffer(p, tag->key, len1);
|
|
bytestream_put_byte(p, '=');
|
|
bytestream_put_buffer(p, tag->value, len2);
|
|
}
|
|
for (int i = 0; i < nb_chapters; i++) {
|
|
AVChapter *chp = chapters[i];
|
|
char chapter_time[13];
|
|
char chapter_number[4];
|
|
int h, m, s, ms;
|
|
|
|
s = av_rescale(chp->start, chp->time_base.num, chp->time_base.den);
|
|
h = s / 3600;
|
|
m = (s / 60) % 60;
|
|
ms = av_rescale_q(chp->start, chp->time_base, av_make_q( 1, 1000)) % 1000;
|
|
s = s % 60;
|
|
snprintf(chapter_number, sizeof(chapter_number), "%03d", i);
|
|
snprintf(chapter_time, sizeof(chapter_time), "%02d:%02d:%02d.%03d", h, m, s, ms);
|
|
bytestream_put_le32(p, 10+1+12);
|
|
bytestream_put_buffer(p, "CHAPTER", 7);
|
|
bytestream_put_buffer(p, chapter_number, 3);
|
|
bytestream_put_byte(p, '=');
|
|
bytestream_put_buffer(p, chapter_time, 12);
|
|
|
|
tag = NULL;
|
|
while ((tag = av_dict_get(chapters[i]->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
|
|
int64_t len1 = !strcmp(tag->key, "title") ? 4 : strlen(tag->key);
|
|
int64_t len2 = strlen(tag->value);
|
|
if (len1+1+len2+10 > UINT32_MAX)
|
|
return AVERROR(EINVAL);
|
|
bytestream_put_le32(p, 10+len1+1+len2);
|
|
bytestream_put_buffer(p, "CHAPTER", 7);
|
|
bytestream_put_buffer(p, chapter_number, 3);
|
|
if (!strcmp(tag->key, "title"))
|
|
bytestream_put_buffer(p, "NAME", 4);
|
|
else
|
|
bytestream_put_buffer(p, tag->key, len1);
|
|
bytestream_put_byte(p, '=');
|
|
bytestream_put_buffer(p, tag->value, len2);
|
|
}
|
|
}
|
|
} else
|
|
bytestream_put_le32(p, 0);
|
|
return 0;
|
|
}
|