summaryrefslogtreecommitdiffstats
path: root/firmware/export/id3.h
blob: bb3b6a6fe5bb777f8c77a2fd324dcfa1f36ad8d0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2002 by Daniel Stenberg
 *
 * All files in this archive are subject to the GNU General Public License.
 * See the file COPYING in the source tree root for full license agreement.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#ifndef ID3_H
#define ID3_H

#include <stdbool.h>
#include "config.h"
#include "file.h"

#define ID3V2_BUF_SIZE 300

/* Audio file types. */
/* NOTE: The values of the AFMT_* items are used for the %fc tag in the WPS
         - so new entries MUST be added to the end to maintain compatibility.
 */
enum
{
    AFMT_UNKNOWN = 0,  /* Unknown file format */

    /* start formats */

    AFMT_MPA_L1,       /* MPEG Audio layer 1 */
    AFMT_MPA_L2,       /* MPEG Audio layer 2 */
    AFMT_MPA_L3,       /* MPEG Audio layer 3 */

#if CONFIG_CODEC == SWCODEC
    AFMT_AIFF,         /* Audio Interchange File Format */
    AFMT_PCM_WAV,      /* Uncompressed PCM in a WAV file */
    AFMT_OGG_VORBIS,   /* Ogg Vorbis */
    AFMT_FLAC,         /* FLAC */
    AFMT_MPC,          /* Musepack */
    AFMT_A52,          /* A/52 (aka AC3) audio */
    AFMT_WAVPACK,      /* WavPack */
    AFMT_ALAC,         /* Apple Lossless Audio Codec */
    AFMT_AAC,          /* Advanced Audio Coding (AAC) in M4A container */
    AFMT_SHN,          /* Shorten */
    AFMT_SID,          /* SID File Format */
    AFMT_ADX,          /* ADX File Format */
    AFMT_NSF,          /* NESM (NES Sound Format) */
    AFMT_SPEEX,        /* Ogg Speex speech */
    AFMT_SPC,          /* SPC700 save state */
    AFMT_APE,          /* Monkey's Audio (APE) */
    AFMT_WMA,          /* WMAV1/V2 in ASF */
#endif

    /* add new formats at any index above this line to have a sensible order -
       specified array index inits are used */
    /* format arrays defined in id3.c */

    AFMT_NUM_CODECS,

#if CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING)
    /* masks to decompose parts */
    CODEC_AFMT_MASK    = 0x0fff,
    CODEC_TYPE_MASK    = 0x7000,

    /* switch for specifying codec type when requesting a filename */
    CODEC_TYPE_DECODER = (0 << 12), /* default */
    CODEC_TYPE_ENCODER = (1 << 12),
#endif /* CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING) */
};

#if CONFIG_CODEC == SWCODEC
#define CODEC_EXTENSION "codec"

#ifdef HAVE_RECORDING
#define ENCODER_SUFFIX  "_enc"
enum rec_format_indexes
{
    __REC_FORMAT_START_INDEX = -1,

    /* start formats */

    REC_FORMAT_PCM_WAV,
    REC_FORMAT_AIFF,
    REC_FORMAT_WAVPACK,
    REC_FORMAT_MPA_L3,

    /* add new formats at any index above this line to have a sensible order -
       specified array index inits are used
       REC_FORMAT_CFG_NUM_BITS should allocate enough bits to hold the range
       REC_FORMAT_CFG_VALUE_LIST should be in same order as indexes
    */

    REC_NUM_FORMATS,

    REC_FORMAT_DEFAULT = REC_FORMAT_PCM_WAV,
    REC_FORMAT_CFG_NUM_BITS = 2
};

#define REC_FORMAT_CFG_VAL_LIST "wave,aiff,wvpk,mpa3" 

/* get REC_FORMAT_* corresponding AFMT_* */
extern const int rec_format_afmt[REC_NUM_FORMATS];
/* get AFMT_* corresponding REC_FORMAT_* */
extern const int afmt_rec_format[AFMT_NUM_CODECS];

#define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
    { label, root_fname, enc_root_fname, ext_list }
#else /* !HAVE_RECORDING */
#define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
    { label, root_fname, ext_list }
#endif /* HAVE_RECORDING */
#else /* !SWCODEC */

#define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
    { label, ext_list }
#endif /* CONFIG_CODEC == SWCODEC */

/* record describing the audio format */
struct afmt_entry
{
    char label[8];      /* format label */
#if CONFIG_CODEC == SWCODEC
    char *codec_root_fn; /* root codec filename (sans _enc and .codec) */
#ifdef HAVE_RECORDING
    char *codec_enc_root_fn; /* filename of encoder codec */
#endif
#endif
    char *ext_list;     /* double NULL terminated extension
                           list for type with the first as
                           the default for recording */
};

/* database of labels and codecs. add formats per above enum */
extern const struct afmt_entry audio_formats[AFMT_NUM_CODECS];

struct mp3entry {
    char path[MAX_PATH];
    char* title;
    char* artist;
    char* album;
    char* genre_string;
    char* disc_string;
    char* track_string;
    char* year_string;
    char* composer;
    char* comment;
    char* albumartist;
    char* grouping;
    int discnum;    
    int tracknum;
    int version;
    int layer;
    int year;
    unsigned char id3version;
    unsigned int codectype;
    unsigned int bitrate;
    unsigned long frequency;
    unsigned long id3v2len;
    unsigned long id3v1len;
    unsigned long first_frame_offset; /* Byte offset to first real MP3 frame.
                                         Used for skipping leading garbage to
                                         avoid gaps between tracks. */
    unsigned long vbr_header_pos;
    unsigned long filesize; /* without headers; in bytes */
    unsigned long length;   /* song length in ms */
    unsigned long elapsed;  /* ms played */

    int lead_trim;          /* Number of samples to skip at the beginning */
    int tail_trim;          /* Number of samples to remove from the end */

    /* Added for Vorbis */
    unsigned long samples;  /* number of samples in track */

    /* MP3 stream specific info */
    unsigned long frame_count; /* number of frames in the file (if VBR) */

    /* Used for A52/AC3 */
    unsigned long bytesperframe; /* number of bytes per frame (if CBR) */

    /* Xing VBR fields */
    bool vbr;
    bool has_toc;           /* True if there is a VBR header in the file */
    unsigned char toc[100]; /* table of contents */

    /* these following two fields are used for local buffering */
    char id3v2buf[ID3V2_BUF_SIZE];
    char id3v1buf[4][92];

    /* resume related */
    unsigned long offset;  /* bytes played */
    int index;             /* playlist index */

    /* runtime database fields */
    long tagcache_idx;     /* 0=invalid, otherwise idx+1 */
    int rating;
    int score;
    long playcount;
    long lastplayed;
    long playtime;
    
    /* replaygain support */
    
#if CONFIG_CODEC == SWCODEC
    char* track_gain_string;
    char* album_gain_string;
    long track_gain;    /* 7.24 signed fixed point. 0 for no gain. */
    long album_gain;
    long track_peak;    /* 7.24 signed fixed point. 0 for no peak. */
    long album_peak;
#endif

    /* Cuesheet support */
    int cuesheet_type;      /* 0: none, 1: external, 2: embedded */
};

enum {
    ID3_VER_1_0 = 1,
    ID3_VER_1_1,
    ID3_VER_2_2,
    ID3_VER_2_3,
    ID3_VER_2_4
};

bool get_mp3_metadata(int fd, struct mp3entry *entry, const char *filename);
bool mp3info(struct mp3entry *entry, const char *filename);
char* id3_get_num_genre(const unsigned int genre_num);
char* id3_get_codec(const struct mp3entry* id3);
int getid3v2len(int fd);
void adjust_mp3entry(struct mp3entry *entry, void *dest, void *orig);
void copy_mp3entry(struct mp3entry *dest, struct mp3entry *orig);

#endif