247 lines
6.3 KiB
C
247 lines
6.3 KiB
C
/*
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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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#include "libavutil/dict.h"
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/* See Genre List at http://id3.org/id3v2.3.0 */
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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", /* sic, the misspelling is used in the specification */
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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_dict_set(&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_dict_set(&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_dict_set(&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;
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uint8_t buf[ID3v1_TAG_SIZE];
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int64_t filesize, position = avio_tell(s->pb);
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if (s->pb->seekable) {
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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, position, SEEK_SET);
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}
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}
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}
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