3 * Copyright (c) 2009 James Darnley
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "vorbiscomment.h"
25 #include "libavcodec/bytestream.h"
26 #include "libavutil/dict.h"
29 * VorbisComment metadata conversion mapping.
30 * from Ogg Vorbis I format specification: comment field and header specification
31 * http://xiph.org/vorbis/doc/v-comment.html
33 const AVMetadataConv ff_vorbiscomment_metadata_conv[] = {
34 { "ALBUMARTIST", "album_artist"},
35 { "TRACKNUMBER", "track" },
36 { "DISCNUMBER", "disc" },
37 { "DESCRIPTION", "comment" },
41 int64_t ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string,
42 AVChapter **chapters, unsigned int nb_chapters)
45 len += strlen(vendor_string);
46 if (chapters && nb_chapters) {
47 for (int i = 0; i < nb_chapters; i++) {
48 AVDictionaryEntry *tag = NULL;
49 len += 4 + 12 + 1 + 10;
50 while ((tag = av_dict_get(chapters[i]->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
51 int64_t len1 = !strcmp(tag->key, "title") ? 4 : strlen(tag->key);
52 len += 4 + 10 + len1 + 1 + strlen(tag->value);
57 AVDictionaryEntry *tag = NULL;
58 while ((tag = av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
59 len += 4 +strlen(tag->key) + 1 + strlen(tag->value);
65 int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m,
66 const char *vendor_string,
67 AVChapter **chapters, unsigned int nb_chapters)
70 bytestream_put_le32(p, strlen(vendor_string));
71 bytestream_put_buffer(p, vendor_string, strlen(vendor_string));
72 if (chapters && nb_chapters) {
73 for (int i = 0; i < nb_chapters; i++) {
74 cm_count += av_dict_count(chapters[i]->metadata) + 1;
78 int count = av_dict_count(*m) + cm_count;
79 AVDictionaryEntry *tag = NULL;
80 bytestream_put_le32(p, count);
81 while ((tag = av_dict_get(*m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
82 int64_t len1 = strlen(tag->key);
83 int64_t len2 = strlen(tag->value);
84 if (len1+1+len2 > UINT32_MAX)
85 return AVERROR(EINVAL);
86 bytestream_put_le32(p, len1+1+len2);
87 bytestream_put_buffer(p, tag->key, len1);
88 bytestream_put_byte(p, '=');
89 bytestream_put_buffer(p, tag->value, len2);
91 for (int i = 0; i < nb_chapters; i++) {
92 AVChapter *chp = chapters[i];
93 char chapter_time[13];
94 char chapter_number[4];
97 s = av_rescale(chp->start, chp->time_base.num, chp->time_base.den);
100 ms = av_rescale_q(chp->start, chp->time_base, av_make_q( 1, 1000)) % 1000;
102 snprintf(chapter_number, sizeof(chapter_number), "%03d", i);
103 snprintf(chapter_time, sizeof(chapter_time), "%02d:%02d:%02d.%03d", h, m, s, ms);
104 bytestream_put_le32(p, 10+1+12);
105 bytestream_put_buffer(p, "CHAPTER", 7);
106 bytestream_put_buffer(p, chapter_number, 3);
107 bytestream_put_byte(p, '=');
108 bytestream_put_buffer(p, chapter_time, 12);
111 while ((tag = av_dict_get(chapters[i]->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
112 int64_t len1 = !strcmp(tag->key, "title") ? 4 : strlen(tag->key);
113 int64_t len2 = strlen(tag->value);
114 if (len1+1+len2+10 > UINT32_MAX)
115 return AVERROR(EINVAL);
116 bytestream_put_le32(p, 10+len1+1+len2);
117 bytestream_put_buffer(p, "CHAPTER", 7);
118 bytestream_put_buffer(p, chapter_number, 3);
119 if (!strcmp(tag->key, "title"))
120 bytestream_put_buffer(p, "NAME", 4);
122 bytestream_put_buffer(p, tag->key, len1);
123 bytestream_put_byte(p, '=');
124 bytestream_put_buffer(p, tag->value, len2);
128 bytestream_put_le32(p, 0);