| /* |
| * ID3v1 header parser |
| * Copyright (c) 2003 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 "id3v1.h" |
| #include "libavcodec/avcodec.h" |
| #include "libavutil/dict.h" |
| |
| /* See Genre List at http://id3.org/id3v2.3.0 */ |
| 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", /* sic, the misspelling is used in the specification */ |
| [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], *first_free_space = NULL; |
| |
| q = str; |
| for(i = 0; i < buf_size; i++) { |
| c = buf[i]; |
| if (c == '\0') |
| break; |
| if ((q - str) >= sizeof(str) - 1) |
| break; |
| if (c == ' ') { |
| if (!first_free_space) |
| first_free_space = q; |
| } else { |
| first_free_space = NULL; |
| } |
| *q++ = c; |
| } |
| *q = '\0'; |
| |
| if (first_free_space) |
| *first_free_space = '\0'; |
| |
| if (*str) |
| av_dict_set(&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) |
| { |
| 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) { |
| av_dict_set_int(&s->metadata, "track", buf[126], 0); |
| } |
| genre = buf[127]; |
| if (genre <= ID3v1_GENRE_MAX) |
| av_dict_set(&s->metadata, "genre", ff_id3v1_genre_str[genre], 0); |
| return 0; |
| } |
| |
| void ff_id3v1_read(AVFormatContext *s) |
| { |
| int ret; |
| uint8_t buf[ID3v1_TAG_SIZE]; |
| int64_t filesize, position = avio_tell(s->pb); |
| |
| if (s->pb->seekable) { |
| /* 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); |
| } |
| } |
| } |
