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243 lines
6.1 KiB
243 lines
6.1 KiB
/* |
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* ID3v1 header parser |
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* Copyright (c) 2003 Fabrice Bellard |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "id3v1.h" |
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#include "libavcodec/avcodec.h" |
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const char * const ff_id3v1_genre_str[ID3v1_GENRE_MAX + 1] = { |
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[0] = "Blues", |
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[1] = "Classic Rock", |
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[2] = "Country", |
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[3] = "Dance", |
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[4] = "Disco", |
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[5] = "Funk", |
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[6] = "Grunge", |
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[7] = "Hip-Hop", |
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[8] = "Jazz", |
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[9] = "Metal", |
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[10] = "New Age", |
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[11] = "Oldies", |
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[12] = "Other", |
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[13] = "Pop", |
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[14] = "R&B", |
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[15] = "Rap", |
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[16] = "Reggae", |
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[17] = "Rock", |
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[18] = "Techno", |
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[19] = "Industrial", |
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[20] = "Alternative", |
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[21] = "Ska", |
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[22] = "Death Metal", |
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[23] = "Pranks", |
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[24] = "Soundtrack", |
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[25] = "Euro-Techno", |
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[26] = "Ambient", |
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[27] = "Trip-Hop", |
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[28] = "Vocal", |
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[29] = "Jazz+Funk", |
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[30] = "Fusion", |
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[31] = "Trance", |
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[32] = "Classical", |
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[33] = "Instrumental", |
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[34] = "Acid", |
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[35] = "House", |
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[36] = "Game", |
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[37] = "Sound Clip", |
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[38] = "Gospel", |
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[39] = "Noise", |
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[40] = "AlternRock", |
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[41] = "Bass", |
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[42] = "Soul", |
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[43] = "Punk", |
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[44] = "Space", |
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[45] = "Meditative", |
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[46] = "Instrumental Pop", |
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[47] = "Instrumental Rock", |
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[48] = "Ethnic", |
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[49] = "Gothic", |
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[50] = "Darkwave", |
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[51] = "Techno-Industrial", |
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[52] = "Electronic", |
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[53] = "Pop-Folk", |
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[54] = "Eurodance", |
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[55] = "Dream", |
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[56] = "Southern Rock", |
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[57] = "Comedy", |
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[58] = "Cult", |
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[59] = "Gangsta", |
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[60] = "Top 40", |
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[61] = "Christian Rap", |
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[62] = "Pop/Funk", |
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[63] = "Jungle", |
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[64] = "Native American", |
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[65] = "Cabaret", |
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[66] = "New Wave", |
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[67] = "Psychadelic", |
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[68] = "Rave", |
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[69] = "Showtunes", |
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[70] = "Trailer", |
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[71] = "Lo-Fi", |
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[72] = "Tribal", |
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[73] = "Acid Punk", |
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[74] = "Acid Jazz", |
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[75] = "Polka", |
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[76] = "Retro", |
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[77] = "Musical", |
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[78] = "Rock & Roll", |
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[79] = "Hard Rock", |
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[80] = "Folk", |
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[81] = "Folk-Rock", |
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[82] = "National Folk", |
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[83] = "Swing", |
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[84] = "Fast Fusion", |
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[85] = "Bebob", |
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[86] = "Latin", |
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[87] = "Revival", |
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[88] = "Celtic", |
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[89] = "Bluegrass", |
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[90] = "Avantgarde", |
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[91] = "Gothic Rock", |
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[92] = "Progressive Rock", |
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[93] = "Psychedelic Rock", |
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[94] = "Symphonic Rock", |
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[95] = "Slow Rock", |
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[96] = "Big Band", |
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[97] = "Chorus", |
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[98] = "Easy Listening", |
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[99] = "Acoustic", |
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[100] = "Humour", |
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[101] = "Speech", |
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[102] = "Chanson", |
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[103] = "Opera", |
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[104] = "Chamber Music", |
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[105] = "Sonata", |
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[106] = "Symphony", |
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[107] = "Booty Bass", |
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[108] = "Primus", |
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[109] = "Porn Groove", |
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[110] = "Satire", |
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[111] = "Slow Jam", |
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[112] = "Club", |
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[113] = "Tango", |
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[114] = "Samba", |
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[115] = "Folklore", |
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[116] = "Ballad", |
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[117] = "Power Ballad", |
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[118] = "Rhythmic Soul", |
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[119] = "Freestyle", |
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[120] = "Duet", |
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[121] = "Punk Rock", |
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[122] = "Drum Solo", |
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[123] = "A capella", |
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[124] = "Euro-House", |
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[125] = "Dance Hall", |
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[126] = "Goa", |
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[127] = "Drum & Bass", |
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[128] = "Club-House", |
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[129] = "Hardcore", |
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[130] = "Terror", |
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[131] = "Indie", |
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[132] = "BritPop", |
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[133] = "Negerpunk", |
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[134] = "Polsk Punk", |
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[135] = "Beat", |
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[136] = "Christian Gangsta", |
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[137] = "Heavy Metal", |
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[138] = "Black Metal", |
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[139] = "Crossover", |
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[140] = "Contemporary Christian", |
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[141] = "Christian Rock", |
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[142] = "Merengue", |
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[143] = "Salsa", |
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[144] = "Thrash Metal", |
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[145] = "Anime", |
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[146] = "JPop", |
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[147] = "SynthPop", |
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}; |
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static void get_string(AVFormatContext *s, const char *key, |
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const uint8_t *buf, int buf_size) |
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{ |
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int i, c; |
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char *q, str[512]; |
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q = str; |
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for(i = 0; i < buf_size; i++) { |
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c = buf[i]; |
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if (c == '\0') |
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break; |
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if ((q - str) >= sizeof(str) - 1) |
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break; |
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*q++ = c; |
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} |
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*q = '\0'; |
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if (*str) |
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av_metadata_set2(&s->metadata, key, str, 0); |
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} |
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/** |
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* Parse an ID3v1 tag |
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* |
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* @param buf ID3v1_TAG_SIZE long buffer containing the tag |
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*/ |
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static int parse_tag(AVFormatContext *s, const uint8_t *buf) |
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{ |
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char str[5]; |
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int genre; |
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if (!(buf[0] == 'T' && |
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buf[1] == 'A' && |
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buf[2] == 'G')) |
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return -1; |
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get_string(s, "title", buf + 3, 30); |
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get_string(s, "artist", buf + 33, 30); |
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get_string(s, "album", buf + 63, 30); |
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get_string(s, "date", buf + 93, 4); |
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get_string(s, "comment", buf + 97, 30); |
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if (buf[125] == 0 && buf[126] != 0) { |
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snprintf(str, sizeof(str), "%d", buf[126]); |
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av_metadata_set2(&s->metadata, "track", str, 0); |
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} |
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genre = buf[127]; |
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if (genre <= ID3v1_GENRE_MAX) |
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av_metadata_set2(&s->metadata, "genre", ff_id3v1_genre_str[genre], 0); |
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return 0; |
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} |
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void ff_id3v1_read(AVFormatContext *s) |
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{ |
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int ret, filesize; |
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uint8_t buf[ID3v1_TAG_SIZE]; |
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if (!url_is_streamed(s->pb)) { |
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/* XXX: change that */ |
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filesize = avio_size(s->pb); |
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if (filesize > 128) { |
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avio_seek(s->pb, filesize - 128, SEEK_SET); |
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ret = avio_read(s->pb, buf, ID3v1_TAG_SIZE); |
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if (ret == ID3v1_TAG_SIZE) { |
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parse_tag(s, buf); |
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} |
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avio_seek(s->pb, 0, SEEK_SET); |
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} |
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} |
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}
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