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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
* ID3v1 header parser
* Copyright (c) 2003 Fabrice Bellard
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "id3v1.h"
#include "libavcodec/avcodec.h"
const char * const ff_id3v1_genre_str[ID3v1_GENRE_MAX + 1] = {
[0] = "Blues",
[1] = "Classic Rock",
[2] = "Country",
[3] = "Dance",
[4] = "Disco",
[5] = "Funk",
[6] = "Grunge",
[7] = "Hip-Hop",
[8] = "Jazz",
[9] = "Metal",
[10] = "New Age",
[11] = "Oldies",
[12] = "Other",
[13] = "Pop",
[14] = "R&B",
[15] = "Rap",
[16] = "Reggae",
[17] = "Rock",
[18] = "Techno",
[19] = "Industrial",
[20] = "Alternative",
[21] = "Ska",
[22] = "Death Metal",
[23] = "Pranks",
[24] = "Soundtrack",
[25] = "Euro-Techno",
[26] = "Ambient",
[27] = "Trip-Hop",
[28] = "Vocal",
[29] = "Jazz+Funk",
[30] = "Fusion",
[31] = "Trance",
[32] = "Classical",
[33] = "Instrumental",
[34] = "Acid",
[35] = "House",
[36] = "Game",
[37] = "Sound Clip",
[38] = "Gospel",
[39] = "Noise",
[40] = "AlternRock",
[41] = "Bass",
[42] = "Soul",
[43] = "Punk",
[44] = "Space",
[45] = "Meditative",
[46] = "Instrumental Pop",
[47] = "Instrumental Rock",
[48] = "Ethnic",
[49] = "Gothic",
[50] = "Darkwave",
[51] = "Techno-Industrial",
[52] = "Electronic",
[53] = "Pop-Folk",
[54] = "Eurodance",
[55] = "Dream",
[56] = "Southern Rock",
[57] = "Comedy",
[58] = "Cult",
[59] = "Gangsta",
[60] = "Top 40",
[61] = "Christian Rap",
[62] = "Pop/Funk",
[63] = "Jungle",
[64] = "Native American",
[65] = "Cabaret",
[66] = "New Wave",
[67] = "Psychadelic",
[68] = "Rave",
[69] = "Showtunes",
[70] = "Trailer",
[71] = "Lo-Fi",
[72] = "Tribal",
[73] = "Acid Punk",
[74] = "Acid Jazz",
[75] = "Polka",
[76] = "Retro",
[77] = "Musical",
[78] = "Rock & Roll",
[79] = "Hard Rock",
[80] = "Folk",
[81] = "Folk-Rock",
[82] = "National Folk",
[83] = "Swing",
[84] = "Fast Fusion",
[85] = "Bebob",
[86] = "Latin",
[87] = "Revival",
[88] = "Celtic",
[89] = "Bluegrass",
[90] = "Avantgarde",
[91] = "Gothic Rock",
[92] = "Progressive Rock",
[93] = "Psychedelic Rock",
[94] = "Symphonic Rock",
[95] = "Slow Rock",
[96] = "Big Band",
[97] = "Chorus",
[98] = "Easy Listening",
[99] = "Acoustic",
[100] = "Humour",
[101] = "Speech",
[102] = "Chanson",
[103] = "Opera",
[104] = "Chamber Music",
[105] = "Sonata",
[106] = "Symphony",
[107] = "Booty Bass",
[108] = "Primus",
[109] = "Porn Groove",
[110] = "Satire",
[111] = "Slow Jam",
[112] = "Club",
[113] = "Tango",
[114] = "Samba",
[115] = "Folklore",
[116] = "Ballad",
[117] = "Power Ballad",
[118] = "Rhythmic Soul",
[119] = "Freestyle",
[120] = "Duet",
[121] = "Punk Rock",
[122] = "Drum Solo",
[123] = "A capella",
[124] = "Euro-House",
[125] = "Dance Hall",
[126] = "Goa",
[127] = "Drum & Bass",
[128] = "Club-House",
[129] = "Hardcore",
[130] = "Terror",
[131] = "Indie",
[132] = "BritPop",
[133] = "Negerpunk",
[134] = "Polsk Punk",
[135] = "Beat",
[136] = "Christian Gangsta",
[137] = "Heavy Metal",
[138] = "Black Metal",
[139] = "Crossover",
[140] = "Contemporary Christian",
[141] = "Christian Rock",
[142] = "Merengue",
[143] = "Salsa",
[144] = "Thrash Metal",
[145] = "Anime",
[146] = "JPop",
[147] = "SynthPop",
};
static void get_string(AVFormatContext *s, const char *key,
const uint8_t *buf, int buf_size)
{
int i, c;
char *q, str[512];
q = str;
for(i = 0; i < buf_size; i++) {
c = buf[i];
if (c == '\0')
break;
if ((q - str) >= sizeof(str) - 1)
break;
*q++ = c;
}
*q = '\0';
if (*str)
av_metadata_set2(&s->metadata, key, str, 0);
}
/**
* Parse an ID3v1 tag
*
* @param buf ID3v1_TAG_SIZE long buffer containing the tag
*/
static int parse_tag(AVFormatContext *s, const uint8_t *buf)
{
char str[5];
int genre;
if (!(buf[0] == 'T' &&
buf[1] == 'A' &&
buf[2] == 'G'))
return -1;
get_string(s, "title", buf + 3, 30);
get_string(s, "artist", buf + 33, 30);
get_string(s, "album", buf + 63, 30);
get_string(s, "date", buf + 93, 4);
get_string(s, "comment", buf + 97, 30);
if (buf[125] == 0 && buf[126] != 0) {
snprintf(str, sizeof(str), "%d", buf[126]);
av_metadata_set2(&s->metadata, "track", str, 0);
}
genre = buf[127];
if (genre <= ID3v1_GENRE_MAX)
av_metadata_set2(&s->metadata, "genre", ff_id3v1_genre_str[genre], 0);
return 0;
}
void ff_id3v1_read(AVFormatContext *s)
{
int ret, filesize;
uint8_t buf[ID3v1_TAG_SIZE];
int64_t position = avio_tell(s->pb);
if (!url_is_streamed(s->pb)) {
/* XXX: change that */
filesize = avio_size(s->pb);
if (filesize > 128) {
avio_seek(s->pb, filesize - 128, SEEK_SET);
ret = avio_read(s->pb, buf, ID3v1_TAG_SIZE);
if (ret == ID3v1_TAG_SIZE) {
parse_tag(s, buf);
}
avio_seek(s->pb, position, SEEK_SET);
}
}
}
|
