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1 | /* |
2 | * ID3v1 header parser | |
3 | * Copyright (c) 2003 Fabrice Bellard | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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 | |
20 | */ | |
21 | ||
22 | #include "id3v1.h" | |
23 | #include "libavcodec/avcodec.h" | |
24 | #include "libavutil/dict.h" | |
25 | ||
26 | /* See Genre List at http://id3.org/id3v2.3.0 */ | |
27 | const char * const ff_id3v1_genre_str[ID3v1_GENRE_MAX + 1] = { | |
28 | [0] = "Blues", | |
29 | [1] = "Classic Rock", | |
30 | [2] = "Country", | |
31 | [3] = "Dance", | |
32 | [4] = "Disco", | |
33 | [5] = "Funk", | |
34 | [6] = "Grunge", | |
35 | [7] = "Hip-Hop", | |
36 | [8] = "Jazz", | |
37 | [9] = "Metal", | |
38 | [10] = "New Age", | |
39 | [11] = "Oldies", | |
40 | [12] = "Other", | |
41 | [13] = "Pop", | |
42 | [14] = "R&B", | |
43 | [15] = "Rap", | |
44 | [16] = "Reggae", | |
45 | [17] = "Rock", | |
46 | [18] = "Techno", | |
47 | [19] = "Industrial", | |
48 | [20] = "Alternative", | |
49 | [21] = "Ska", | |
50 | [22] = "Death Metal", | |
51 | [23] = "Pranks", | |
52 | [24] = "Soundtrack", | |
53 | [25] = "Euro-Techno", | |
54 | [26] = "Ambient", | |
55 | [27] = "Trip-Hop", | |
56 | [28] = "Vocal", | |
57 | [29] = "Jazz+Funk", | |
58 | [30] = "Fusion", | |
59 | [31] = "Trance", | |
60 | [32] = "Classical", | |
61 | [33] = "Instrumental", | |
62 | [34] = "Acid", | |
63 | [35] = "House", | |
64 | [36] = "Game", | |
65 | [37] = "Sound Clip", | |
66 | [38] = "Gospel", | |
67 | [39] = "Noise", | |
68 | [40] = "AlternRock", | |
69 | [41] = "Bass", | |
70 | [42] = "Soul", | |
71 | [43] = "Punk", | |
72 | [44] = "Space", | |
73 | [45] = "Meditative", | |
74 | [46] = "Instrumental Pop", | |
75 | [47] = "Instrumental Rock", | |
76 | [48] = "Ethnic", | |
77 | [49] = "Gothic", | |
78 | [50] = "Darkwave", | |
79 | [51] = "Techno-Industrial", | |
80 | [52] = "Electronic", | |
81 | [53] = "Pop-Folk", | |
82 | [54] = "Eurodance", | |
83 | [55] = "Dream", | |
84 | [56] = "Southern Rock", | |
85 | [57] = "Comedy", | |
86 | [58] = "Cult", | |
87 | [59] = "Gangsta", | |
88 | [60] = "Top 40", | |
89 | [61] = "Christian Rap", | |
90 | [62] = "Pop/Funk", | |
91 | [63] = "Jungle", | |
92 | [64] = "Native American", | |
93 | [65] = "Cabaret", | |
94 | [66] = "New Wave", | |
95 | [67] = "Psychadelic", /* sic, the misspelling is used in the specification */ | |
96 | [68] = "Rave", | |
97 | [69] = "Showtunes", | |
98 | [70] = "Trailer", | |
99 | [71] = "Lo-Fi", | |
100 | [72] = "Tribal", | |
101 | [73] = "Acid Punk", | |
102 | [74] = "Acid Jazz", | |
103 | [75] = "Polka", | |
104 | [76] = "Retro", | |
105 | [77] = "Musical", | |
106 | [78] = "Rock & Roll", | |
107 | [79] = "Hard Rock", | |
108 | [80] = "Folk", | |
109 | [81] = "Folk-Rock", | |
110 | [82] = "National Folk", | |
111 | [83] = "Swing", | |
112 | [84] = "Fast Fusion", | |
113 | [85] = "Bebob", | |
114 | [86] = "Latin", | |
115 | [87] = "Revival", | |
116 | [88] = "Celtic", | |
117 | [89] = "Bluegrass", | |
118 | [90] = "Avantgarde", | |
119 | [91] = "Gothic Rock", | |
120 | [92] = "Progressive Rock", | |
121 | [93] = "Psychedelic Rock", | |
122 | [94] = "Symphonic Rock", | |
123 | [95] = "Slow Rock", | |
124 | [96] = "Big Band", | |
125 | [97] = "Chorus", | |
126 | [98] = "Easy Listening", | |
127 | [99] = "Acoustic", | |
128 | [100] = "Humour", | |
129 | [101] = "Speech", | |
130 | [102] = "Chanson", | |
131 | [103] = "Opera", | |
132 | [104] = "Chamber Music", | |
133 | [105] = "Sonata", | |
134 | [106] = "Symphony", | |
135 | [107] = "Booty Bass", | |
136 | [108] = "Primus", | |
137 | [109] = "Porn Groove", | |
138 | [110] = "Satire", | |
139 | [111] = "Slow Jam", | |
140 | [112] = "Club", | |
141 | [113] = "Tango", | |
142 | [114] = "Samba", | |
143 | [115] = "Folklore", | |
144 | [116] = "Ballad", | |
145 | [117] = "Power Ballad", | |
146 | [118] = "Rhythmic Soul", | |
147 | [119] = "Freestyle", | |
148 | [120] = "Duet", | |
149 | [121] = "Punk Rock", | |
150 | [122] = "Drum Solo", | |
151 | [123] = "A capella", | |
152 | [124] = "Euro-House", | |
153 | [125] = "Dance Hall", | |
154 | [126] = "Goa", | |
155 | [127] = "Drum & Bass", | |
156 | [128] = "Club-House", | |
157 | [129] = "Hardcore", | |
158 | [130] = "Terror", | |
159 | [131] = "Indie", | |
160 | [132] = "BritPop", | |
161 | [133] = "Negerpunk", | |
162 | [134] = "Polsk Punk", | |
163 | [135] = "Beat", | |
164 | [136] = "Christian Gangsta", | |
165 | [137] = "Heavy Metal", | |
166 | [138] = "Black Metal", | |
167 | [139] = "Crossover", | |
168 | [140] = "Contemporary Christian", | |
169 | [141] = "Christian Rock", | |
170 | [142] = "Merengue", | |
171 | [143] = "Salsa", | |
172 | [144] = "Thrash Metal", | |
173 | [145] = "Anime", | |
174 | [146] = "JPop", | |
175 | [147] = "SynthPop", | |
176 | }; | |
177 | ||
178 | static void get_string(AVFormatContext *s, const char *key, | |
179 | const uint8_t *buf, int buf_size) | |
180 | { | |
181 | int i, c; | |
182 | char *q, str[512]; | |
183 | ||
184 | q = str; | |
185 | for(i = 0; i < buf_size; i++) { | |
186 | c = buf[i]; | |
187 | if (c == '\0') | |
188 | break; | |
189 | if ((q - str) >= sizeof(str) - 1) | |
190 | break; | |
191 | *q++ = c; | |
192 | } | |
193 | *q = '\0'; | |
194 | ||
195 | if (*str) | |
196 | av_dict_set(&s->metadata, key, str, 0); | |
197 | } | |
198 | ||
199 | /** | |
200 | * Parse an ID3v1 tag | |
201 | * | |
202 | * @param buf ID3v1_TAG_SIZE long buffer containing the tag | |
203 | */ | |
204 | static int parse_tag(AVFormatContext *s, const uint8_t *buf) | |
205 | { | |
206 | int genre; | |
207 | ||
208 | if (!(buf[0] == 'T' && | |
209 | buf[1] == 'A' && | |
210 | buf[2] == 'G')) | |
211 | return -1; | |
212 | get_string(s, "title", buf + 3, 30); | |
213 | get_string(s, "artist", buf + 33, 30); | |
214 | get_string(s, "album", buf + 63, 30); | |
215 | get_string(s, "date", buf + 93, 4); | |
216 | get_string(s, "comment", buf + 97, 30); | |
217 | if (buf[125] == 0 && buf[126] != 0) { | |
218 | av_dict_set_int(&s->metadata, "track", buf[126], 0); | |
219 | } | |
220 | genre = buf[127]; | |
221 | if (genre <= ID3v1_GENRE_MAX) | |
222 | av_dict_set(&s->metadata, "genre", ff_id3v1_genre_str[genre], 0); | |
223 | return 0; | |
224 | } | |
225 | ||
226 | void ff_id3v1_read(AVFormatContext *s) | |
227 | { | |
228 | int ret; | |
229 | uint8_t buf[ID3v1_TAG_SIZE]; | |
230 | int64_t filesize, position = avio_tell(s->pb); | |
231 | ||
232 | if (s->pb->seekable) { | |
233 | /* XXX: change that */ | |
234 | filesize = avio_size(s->pb); | |
235 | if (filesize > 128) { | |
236 | avio_seek(s->pb, filesize - 128, SEEK_SET); | |
237 | ret = avio_read(s->pb, buf, ID3v1_TAG_SIZE); | |
238 | if (ret == ID3v1_TAG_SIZE) { | |
239 | parse_tag(s, buf); | |
240 | } | |
241 | avio_seek(s->pb, position, SEEK_SET); | |
242 | } | |
243 | } | |
244 | } |