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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* Copyright (c) 2000, 2001 Fabrice Bellard
*
* 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 "libavutil/mem.h"
#include "asf.h"
#include "demux.h"
#include "id3v2.h"
#include "internal.h"
/* List of official tags at http://msdn.microsoft.com/en-us/library/dd743066(VS.85).aspx */
const AVMetadataConv ff_asf_metadata_conv[] = {
{ "WM/AlbumArtist", "album_artist" },
{ "WM/AlbumTitle", "album" },
{ "Author", "artist" },
{ "Description", "comment" },
{ "WM/Composer", "composer" },
{ "WM/EncodedBy", "encoded_by" },
{ "WM/EncodingSettings", "encoder" },
{ "WM/Genre", "genre" },
{ "WM/Language", "language" },
{ "WM/OriginalFilename", "filename" },
{ "WM/PartOfSet", "disc" },
{ "WM/Publisher", "publisher" },
{ "WM/Tool", "encoder" },
{ "WM/TrackNumber", "track" },
{ "WM/MediaStationCallSign", "service_provider" },
{ "WM/MediaStationName", "service_name" },
// { "Year" , "date" }, TODO: conversion year<->date
{ 0 }
};
/* MSDN claims that this should be "compatible with the ID3 frame, APIC",
* but in reality this is only loosely similar */
static int asf_read_picture(AVFormatContext *s, int len)
{
const CodecMime *mime = ff_id3v2_mime_tags;
enum AVCodecID id = AV_CODEC_ID_NONE;
char mimetype[64];
uint8_t *desc = NULL;
AVStream *st = NULL;
int ret, type, picsize, desc_len;
/* type + picsize + mime + desc */
if (len < 1 + 4 + 2 + 2) {
av_log(s, AV_LOG_ERROR, "Invalid attached picture size: %d.\n", len);
return AVERROR_INVALIDDATA;
}
/* picture type */
type = avio_r8(s->pb);
len--;
if (type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types) || type < 0) {
av_log(s, AV_LOG_WARNING, "Unknown attached picture type: %d.\n", type);
type = 0;
}
/* picture data size */
picsize = avio_rl32(s->pb);
len -= 4;
/* picture MIME type */
len -= avio_get_str16le(s->pb, len, mimetype, sizeof(mimetype));
while (mime->id != AV_CODEC_ID_NONE) {
if (!strncmp(mime->str, mimetype, sizeof(mimetype))) {
id = mime->id;
break;
}
mime++;
}
if (id == AV_CODEC_ID_NONE) {
av_log(s, AV_LOG_ERROR, "Unknown attached picture mimetype: %s.\n",
mimetype);
return 0;
}
if (picsize >= len || ((int64_t)len - picsize) * 2 + 1 > INT_MAX) {
av_log(s, AV_LOG_ERROR, "Invalid attached picture data size: %d (len = %d).\n",
picsize, len);
return AVERROR_INVALIDDATA;
}
/* picture description */
desc_len = (len - picsize) * 2 + 1;
desc = av_malloc(desc_len);
if (!desc)
return AVERROR(ENOMEM);
len -= avio_get_str16le(s->pb, len - picsize, desc, desc_len);
ret = ff_add_attached_pic(s, NULL, s->pb, NULL, picsize);
if (ret < 0)
goto fail;
st = s->streams[s->nb_streams - 1];
st->codecpar->codec_id = id;
if (*desc) {
if (av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
} else
av_freep(&desc);
if (av_dict_set(&st->metadata, "comment", ff_id3v2_picture_types[type], 0) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
return 0;
fail:
av_freep(&desc);
return ret;
}
static int get_id3_tag(AVFormatContext *s, int len)
{
ID3v2ExtraMeta *id3v2_extra_meta;
ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, len);
if (id3v2_extra_meta) {
ff_id3v2_parse_apic(s, id3v2_extra_meta);
ff_id3v2_parse_chapters(s, id3v2_extra_meta);
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
}
return 0;
}
int ff_asf_handle_byte_array(AVFormatContext *s, const char *name,
int val_len)
{
if (!strcmp(name, "WM/Picture")) // handle cover art
return asf_read_picture(s, val_len);
else if (!strcmp(name, "ID3")) // handle ID3 tag
return get_id3_tag(s, val_len);
return 1;
}
|
