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id3v1.go
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id3v1.go
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package id3
import (
"github.com/wader/fq/format"
"github.com/wader/fq/pkg/decode"
"github.com/wader/fq/pkg/interp"
"github.com/wader/fq/pkg/scalar"
)
// TODO: comment 28 long, zero byte, track number
func init() {
interp.RegisterFormat(
format.ID3v1,
&decode.Format{
Description: "ID3v1 metadata",
DecodeFn: id3v1Decode,
})
}
// Decode ID3v1 tag
func id3v1Decode(d *decode.D) any {
d.AssertAtLeastBitsLeft(128 * 8)
d.FieldUTF8("magic", 3, d.StrAssert("TAG"))
if d.PeekUintBits(8) == uint64('+') {
d.Errorf("looks like id3v11")
}
d.FieldUTF8NullFixedLen("song_name", 30)
d.FieldUTF8NullFixedLen("artist", 30)
d.FieldUTF8NullFixedLen("album_name", 30)
d.FieldUTF8NullFixedLen("year", 4)
d.FieldUTF8NullFixedLen("comment", 30)
// from https://en.wikipedia.org/wiki/List_of_ID3v1_Genres
d.FieldU8("genre", scalar.UintMap{
0: {Sym: "blues", Description: "Blues"},
1: {Sym: "classic_rock", Description: "Classic Rock"},
2: {Sym: "country", Description: "Country"},
3: {Sym: "dance", Description: "Dance"},
4: {Sym: "disco", Description: "Disco"},
5: {Sym: "funk", Description: "Funk"},
6: {Sym: "grunge", Description: "Grunge"},
7: {Sym: "hiphop", Description: "Hip-Hop"},
8: {Sym: "jazz", Description: "Jazz"},
9: {Sym: "metal", Description: "Metal"},
10: {Sym: "new_age", Description: "New Age"},
11: {Sym: "oldies", Description: "Oldies"},
12: {Sym: "other", Description: "Other"},
13: {Sym: "pop", Description: "Pop"},
14: {Sym: "rhythm_and_blues", Description: "Rhythm and Blues"},
15: {Sym: "rap", Description: "Rap"},
16: {Sym: "reggae", Description: "Reggae"},
17: {Sym: "rock", Description: "Rock"},
18: {Sym: "techno", Description: "Techno"},
19: {Sym: "industrial", Description: "Industrial"},
20: {Sym: "alternative", Description: "Alternative"},
21: {Sym: "ska", Description: "Ska"},
22: {Sym: "death_metal", Description: "Death Metal"},
23: {Sym: "pranks", Description: "Pranks"},
24: {Sym: "soundtrack", Description: "Soundtrack"},
25: {Sym: "euro_techno", Description: "Euro-Techno"},
26: {Sym: "ambient", Description: "Ambient"},
27: {Sym: "triphop", Description: "Trip-Hop"},
28: {Sym: "vocal", Description: "Vocal"},
29: {Sym: "jazz_funk", Description: "Jazz & Funk"},
30: {Sym: "fusion", Description: "Fusion"},
31: {Sym: "trance", Description: "Trance"},
32: {Sym: "classical", Description: "Classical"},
33: {Sym: "instrumental", Description: "Instrumental"},
34: {Sym: "acid", Description: "Acid"},
35: {Sym: "house", Description: "House"},
36: {Sym: "game", Description: "Game"},
37: {Sym: "sound_clip", Description: "Sound clip"},
38: {Sym: "gospel", Description: "Gospel"},
39: {Sym: "noise", Description: "Noise"},
40: {Sym: "alternative_rock", Description: "Alternative Rock"},
41: {Sym: "bass", Description: "Bass"},
42: {Sym: "soul", Description: "Soul"},
43: {Sym: "punk", Description: "Punk"},
44: {Sym: "space", Description: "Space"},
45: {Sym: "meditative", Description: "Meditative"},
46: {Sym: "instrumental_pop", Description: "Instrumental Pop"},
47: {Sym: "instrumental_rock", Description: "Instrumental Rock"},
48: {Sym: "ethnic", Description: "Ethnic"},
49: {Sym: "gothic", Description: "Gothic"},
50: {Sym: "darkwave", Description: "Darkwave"},
51: {Sym: "techno-industrial", Description: "Techno-Industrial"},
52: {Sym: "electronic", Description: "Electronic"},
53: {Sym: "pop-folk", Description: "Pop-Folk"},
54: {Sym: "eurodance", Description: "Eurodance"},
55: {Sym: "dream", Description: "Dream"},
56: {Sym: "southern_rock", Description: "Southern Rock"},
57: {Sym: "comedy", Description: "Comedy"},
58: {Sym: "cult", Description: "Cult"},
59: {Sym: "gangsta", Description: "Gangsta"},
60: {Sym: "top_40", Description: "Top 40"},
61: {Sym: "christian_rap", Description: "Christian Rap"},
62: {Sym: "pop_funk", Description: "Pop/Funk"},
63: {Sym: "jungle_music", Description: "Jungle music"},
64: {Sym: "native_us", Description: "Native US"},
65: {Sym: "cabaret", Description: "Cabaret"},
66: {Sym: "new_wave", Description: "New Wave"},
67: {Sym: "psychedelic", Description: "Psychedelic"},
68: {Sym: "rave", Description: "Rave"},
69: {Sym: "showtunes", Description: "Showtunes"},
70: {Sym: "trailer", Description: "Trailer"},
71: {Sym: "lo-fi", Description: "Lo-Fi"},
72: {Sym: "tribal", Description: "Tribal"},
73: {Sym: "acid_punk", Description: "Acid Punk"},
74: {Sym: "acid_jazz", Description: "Acid Jazz"},
75: {Sym: "polka", Description: "Polka"},
76: {Sym: "retro", Description: "Retro"},
77: {Sym: "musical", Description: "Musical"},
78: {Sym: "rock_n_roll", Description: "Rock ’n’ Roll"},
79: {Sym: "hard_rock", Description: "Hard Rock"},
80: {Sym: "folk", Description: "Folk"},
81: {Sym: "folk-rock", Description: "Folk-Rock"},
82: {Sym: "national_folk", Description: "National Folk"},
83: {Sym: "swing", Description: "Swing"},
84: {Sym: "fast_fusion", Description: "Fast Fusion"},
85: {Sym: "bebop", Description: "Bebop"},
86: {Sym: "latin", Description: "Latin"},
87: {Sym: "revival", Description: "Revival"},
88: {Sym: "celtic", Description: "Celtic"},
89: {Sym: "bluegrass", Description: "Bluegrass"},
90: {Sym: "avantgarde", Description: "Avantgarde"},
91: {Sym: "gothic_rock", Description: "Gothic Rock"},
92: {Sym: "progressive_rock", Description: "Progressive Rock"},
93: {Sym: "psychedelic_rock", Description: "Psychedelic Rock"},
94: {Sym: "symphonic_rock", Description: "Symphonic Rock"},
95: {Sym: "slow_rock", Description: "Slow Rock"},
96: {Sym: "big_band", Description: "Big Band"},
97: {Sym: "chorus", Description: "Chorus"},
98: {Sym: "easy_listening", Description: "Easy Listening"},
99: {Sym: "acoustic", Description: "Acoustic"},
100: {Sym: "humour", Description: "Humour"},
101: {Sym: "speech", Description: "Speech"},
102: {Sym: "chanson", Description: "Chanson"},
103: {Sym: "opera", Description: "Opera"},
104: {Sym: "chamber_music", Description: "Chamber Music"},
105: {Sym: "sonata", Description: "Sonata"},
106: {Sym: "symphony", Description: "Symphony"},
107: {Sym: "booty_bass", Description: "Booty Bass"},
108: {Sym: "primus", Description: "Primus"},
109: {Sym: "porn_groove", Description: "Porn Groove"},
110: {Sym: "satire", Description: "Satire"},
111: {Sym: "slow_jam", Description: "Slow Jam"},
112: {Sym: "club", Description: "Club"},
113: {Sym: "tango", Description: "Tango"},
114: {Sym: "samba", Description: "Samba"},
115: {Sym: "folklore", Description: "Folklore"},
116: {Sym: "ballad", Description: "Ballad"},
117: {Sym: "power_ballad", Description: "Power Ballad"},
118: {Sym: "rhythmic_soul", Description: "Rhythmic Soul"},
119: {Sym: "freestyle", Description: "Freestyle"},
120: {Sym: "duet", Description: "Duet"},
121: {Sym: "punk_rock", Description: "Punk Rock"},
122: {Sym: "drum_solo", Description: "Drum Solo"},
123: {Sym: "a_cappella", Description: "A cappella"},
124: {Sym: "euro_house", Description: "Euro-House"},
125: {Sym: "dance_hall", Description: "Dance Hall"},
126: {Sym: "goa_music", Description: "Goa music"},
127: {Sym: "drum_n_bass", Description: "Drum & Bass"},
128: {Sym: "club_house", Description: "Club-House"},
129: {Sym: "hardcore_techno", Description: "Hardcore Techno"},
130: {Sym: "terror", Description: "Terror"},
131: {Sym: "indie", Description: "Indie"},
132: {Sym: "britpop", Description: "BritPop"},
133: {Sym: "negerpunk", Description: "Negerpunk"},
134: {Sym: "polsk_punk", Description: "Polsk Punk"},
135: {Sym: "beat", Description: "Beat"},
136: {Sym: "christian_gangsta_rap", Description: "Christian Gangsta Rap"},
137: {Sym: "heavy_metal", Description: "Heavy Metal"},
138: {Sym: "black_metal", Description: "Black Metal"},
139: {Sym: "crossover", Description: "Crossover"},
140: {Sym: "contemporary_christian", Description: "Contemporary Christian"},
141: {Sym: "christian_rock", Description: "Christian Rock"},
142: {Sym: "merengue", Description: "Merengue"},
143: {Sym: "salsa", Description: "Salsa"},
144: {Sym: "thrash_metal", Description: "Thrash Metal"},
145: {Sym: "anime", Description: "Anime"},
146: {Sym: "jpop", Description: "Jpop"},
147: {Sym: "synthpop", Description: "Synthpop"},
148: {Sym: "abstract", Description: "Abstract"},
149: {Sym: "art_rock", Description: "Art Rock"},
150: {Sym: "baroque", Description: "Baroque"},
151: {Sym: "bhangra", Description: "Bhangra"},
152: {Sym: "big_beat", Description: "Big beat"},
153: {Sym: "breakbeat", Description: "Breakbeat"},
154: {Sym: "chillout", Description: "Chillout"},
155: {Sym: "downtempo", Description: "Downtempo"},
156: {Sym: "dub", Description: "Dub"},
157: {Sym: "ebm", Description: "EBM"},
158: {Sym: "eclectic", Description: "Eclectic"},
159: {Sym: "electro", Description: "Electro"},
160: {Sym: "electroclash", Description: "Electroclash"},
161: {Sym: "emo", Description: "Emo"},
162: {Sym: "experimental", Description: "Experimental"},
163: {Sym: "garage", Description: "Garage"},
164: {Sym: "global", Description: "Global"},
165: {Sym: "idm", Description: "IDM"},
166: {Sym: "illbient", Description: "Illbient"},
167: {Sym: "industro_goth", Description: "Industro-Goth"},
168: {Sym: "jam_band", Description: "Jam Band"},
169: {Sym: "krautrock", Description: "Krautrock"},
170: {Sym: "leftfield", Description: "Leftfield"},
171: {Sym: "lounge", Description: "Lounge"},
172: {Sym: "math_rock", Description: "Math Rock"},
173: {Sym: "new_romantic", Description: "New Romantic"},
174: {Sym: "nu_breakz", Description: "Nu-Breakz"},
175: {Sym: "post_punk", Description: "Post-Punk"},
176: {Sym: "post_rock", Description: "Post-Rock"},
177: {Sym: "psytrance", Description: "Psytrance"},
178: {Sym: "shoegaze", Description: "Shoegaze"},
179: {Sym: "space_rock", Description: "Space Rock"},
180: {Sym: "trop_rock", Description: "Trop Rock"},
181: {Sym: "world_music", Description: "World Music"},
182: {Sym: "neoclassical", Description: "Neoclassical"},
183: {Sym: "audiobook", Description: "Audiobook"},
184: {Sym: "audio_theatre", Description: "Audio Theatre"},
185: {Sym: "neue_deutsche_welle", Description: "Neue Deutsche Welle"},
186: {Sym: "podcast", Description: "Podcast"},
187: {Sym: "indie_rock", Description: "Indie-Rock"},
188: {Sym: "g_funk", Description: "G-Funk"},
189: {Sym: "dubstep", Description: "Dubstep"},
190: {Sym: "garage_rock", Description: "Garage Rock"},
191: {Sym: "psybient", Description: "Psybient"},
})
return nil
}