1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* 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"
/**
* 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" },
{ 0 }
};
int ff_vorbiscomment_length(AVMetadata *m, const char *vendor_string,
unsigned *count)
{
int len = 8;
len += strlen(vendor_string);
*count = 0;
if (m) {
AVMetadataTag *tag = NULL;
while ((tag = av_metadata_get(m, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
len += 4 +strlen(tag->key) + 1 + strlen(tag->value);
(*count)++;
}
}
return len;
}
int ff_vorbiscomment_write(uint8_t **p, AVMetadata *m,
const char *vendor_string, const unsigned count)
{
bytestream_put_le32(p, strlen(vendor_string));
bytestream_put_buffer(p, vendor_string, strlen(vendor_string));
if (m) {
AVMetadataTag *tag = NULL;
bytestream_put_le32(p, count);
while ((tag = av_metadata_get(m, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
unsigned int len1 = strlen(tag->key);
unsigned int len2 = strlen(tag->value);
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);
}
} else
bytestream_put_le32(p, 0);
return 0;
}
|
