apps/metadata.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 Dave Chapman
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #ifndef _METADATA_H
  23 #define _METADATA_H
  24
  25 #include <stdbool.h>
  26 #include "file.h"
  27 #include "config.h"
  28
  29
  30 /* Audio file types. */
  31 /* NOTE: The values of the AFMT_* items are used for the %fc tag in the WPS
  32          - so new entries MUST be added to the end to maintain compatibility.
  33  */
  34 enum
  35 {
  36     AFMT_UNKNOWN = 0,  /* Unknown file format */
  37
  38     /* start formats */
  39
  40     AFMT_MPA_L1,       /* MPEG Audio layer 1 */
  41     AFMT_MPA_L2,       /* MPEG Audio layer 2 */
  42     AFMT_MPA_L3,       /* MPEG Audio layer 3 */
  43
  44 #if CONFIG_CODEC == SWCODEC
  45     AFMT_AIFF,         /* Audio Interchange File Format */
  46     AFMT_PCM_WAV,      /* Uncompressed PCM in a WAV file */
  47     AFMT_OGG_VORBIS,   /* Ogg Vorbis */
  48     AFMT_FLAC,         /* FLAC */
  49     AFMT_MPC,          /* Musepack */
  50     AFMT_A52,          /* A/52 (aka AC3) audio */
  51     AFMT_WAVPACK,      /* WavPack */
  52     AFMT_MP4_ALAC,     /* Apple Lossless Audio Codec */
  53     AFMT_MP4_AAC,      /* Advanced Audio Coding (AAC) in M4A container */
  54     AFMT_SHN,          /* Shorten */
  55     AFMT_SID,          /* SID File Format */
  56     AFMT_ADX,          /* ADX File Format */
  57     AFMT_NSF,          /* NESM (NES Sound Format) */
  58     AFMT_SPEEX,        /* Ogg Speex speech */
  59     AFMT_SPC,          /* SPC700 save state */
  60     AFMT_APE,          /* Monkey's Audio (APE) */
  61     AFMT_WMA,          /* WMAV1/V2 in ASF */
  62     AFMT_MOD,          /* Amiga MOD File Format */
  63     AFMT_SAP,          /* Atari 8Bit SAP Format */
  64     AFMT_RM_COOK,      /* Cook in RM/RA */
  65     AFMT_RM_AAC,       /* AAC in RM/RA */
  66     AFMT_RM_AC3,       /* AC3 in RM/RA */
  67     AFMT_RM_ATRAC3,    /* ATRAC3 in RM/RA */
  68     AFMT_CMC,          /* Atari 8bit cmc format */
  69     AFMT_CM3,          /* Atari 8bit cm3 format */
  70     AFMT_CMR,          /* Atari 8bit cmr format */
  71     AFMT_CMS,          /* Atari 8bit cms format */
  72     AFMT_DMC,          /* Atari 8bit dmc format */
  73     AFMT_DLT,          /* Atari 8bit dlt format */
  74     AFMT_MPT,          /* Atari 8bit mpt format */
  75     AFMT_MPD,          /* Atari 8bit mpd format */
  76     AFMT_RMT,          /* Atari 8bit rmt format */
  77     AFMT_TMC,          /* Atari 8bit tmc format */
  78     AFMT_TM8,          /* Atari 8bit tm8 format */
  79     AFMT_TM2,          /* Atari 8bit tm2 format */
  80     AFMT_OMA_ATRAC3,   /* Atrac3 in Sony OMA container */
  81     AFMT_SMAF,         /* SMAF */
  82     AFMT_AU,           /* Sun Audio file */
  83     AFMT_VOX,          /* VOX */
  84 #endif
  85
  86     /* add new formats at any index above this line to have a sensible order -
  87        specified array index inits are used */
  88     /* format arrays defined in id3.c */
  89
  90     AFMT_NUM_CODECS,
  91
  92 #if CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING)
  93     /* masks to decompose parts */
  94     CODEC_AFMT_MASK    = 0x0fff,
  95     CODEC_TYPE_MASK    = 0x7000,
  96
  97     /* switch for specifying codec type when requesting a filename */
  98     CODEC_TYPE_DECODER = (0 << 12), /* default */
  99     CODEC_TYPE_ENCODER = (1 << 12),
 100 #endif /* CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING) */
 101 };
 102
 103 #if CONFIG_CODEC == SWCODEC
 104 #define CODEC_EXTENSION "codec"
 105
 106 #ifdef HAVE_RECORDING
 107 #define ENCODER_SUFFIX  "_enc"
 108 enum rec_format_indexes
 109 {
 110     __REC_FORMAT_START_INDEX = -1,
 111
 112     /* start formats */
 113
 114     REC_FORMAT_PCM_WAV,
 115     REC_FORMAT_AIFF,
 116     REC_FORMAT_WAVPACK,
 117     REC_FORMAT_MPA_L3,
 118
 119     /* add new formats at any index above this line to have a sensible order -
 120        specified array index inits are used
 121        REC_FORMAT_CFG_NUM_BITS should allocate enough bits to hold the range
 122        REC_FORMAT_CFG_VALUE_LIST should be in same order as indexes
 123     */
 124
 125     REC_NUM_FORMATS,
 126
 127     REC_FORMAT_DEFAULT = REC_FORMAT_PCM_WAV,
 128     REC_FORMAT_CFG_NUM_BITS = 2
 129 };
 130
 131 #define REC_FORMAT_CFG_VAL_LIST "wave,aiff,wvpk,mpa3"
 132
 133 /* get REC_FORMAT_* corresponding AFMT_* */
 134 extern const int rec_format_afmt[REC_NUM_FORMATS];
 135 /* get AFMT_* corresponding REC_FORMAT_* */
 136 extern const int afmt_rec_format[AFMT_NUM_CODECS];
 137
 138 #define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
 139     { label, root_fname, enc_root_fname, ext_list }
 140 #else /* !HAVE_RECORDING */
 141 #define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
 142     { label, root_fname, ext_list }
 143 #endif /* HAVE_RECORDING */
 144
 145 #else /* !SWCODEC */
 146
 147 #define AFMT_ENTRY(label, root_fname, enc_root_fname, ext_list) \
 148     { label, ext_list }
 149 #endif /* CONFIG_CODEC == SWCODEC */
 150
 151 /** Database of audio formats **/
 152 /* record describing the audio format */
 153 struct afmt_entry
 154 {
 155     char label[8];      /* format label */
 156 #if CONFIG_CODEC == SWCODEC
 157     char *codec_root_fn; /* root codec filename (sans _enc and .codec) */
 158 #ifdef HAVE_RECORDING
 159     char *codec_enc_root_fn; /* filename of encoder codec */
 160 #endif
 161 #endif
 162     char *ext_list;     /* double NULL terminated extension
 163                            list for type with the first as
 164                            the default for recording */
 165 };
 166
 167 /* database of labels and codecs. add formats per above enum */
 168 extern const struct afmt_entry audio_formats[AFMT_NUM_CODECS];
 169
 170 #if MEMORYSIZE > 2
 171 #define ID3V2_BUF_SIZE 900
 172 #else
 173 #define ID3V2_BUF_SIZE 300
 174 #endif
 175
 176 enum {
 177     ID3_VER_1_0 = 1,
 178     ID3_VER_1_1,
 179     ID3_VER_2_2,
 180     ID3_VER_2_3,
 181     ID3_VER_2_4
 182 };
 183
 184 struct mp3entry {
 185     char path[MAX_PATH];
 186     char* title;
 187     char* artist;
 188     char* album;
 189     char* genre_string;
 190     char* disc_string;
 191     char* track_string;
 192     char* year_string;
 193     char* composer;
 194     char* comment;
 195     char* albumartist;
 196     char* grouping;
 197     int discnum;
 198     int tracknum;
 199     int version;
 200     int layer;
 201     int year;
 202     unsigned char id3version;
 203     unsigned int codectype;
 204     unsigned int bitrate;
 205     unsigned long frequency;
 206     unsigned long id3v2len;
 207     unsigned long id3v1len;
 208     unsigned long first_frame_offset; /* Byte offset to first real MP3 frame.
 209                                          Used for skipping leading garbage to
 210                                          avoid gaps between tracks. */
 211     unsigned long vbr_header_pos;
 212     unsigned long filesize; /* without headers; in bytes */
 213     unsigned long length;   /* song length in ms */
 214     unsigned long elapsed;  /* ms played */
 215
 216     int lead_trim;          /* Number of samples to skip at the beginning */
 217     int tail_trim;          /* Number of samples to remove from the end */
 218
 219     /* Added for Vorbis */
 220     unsigned long samples;  /* number of samples in track */
 221
 222     /* MP3 stream specific info */
 223     unsigned long frame_count; /* number of frames in the file (if VBR) */
 224
 225     /* Used for A52/AC3 */
 226     unsigned long bytesperframe; /* number of bytes per frame (if CBR) */
 227
 228     /* Xing VBR fields */
 229     bool vbr;
 230     bool has_toc;           /* True if there is a VBR header in the file */
 231     unsigned char toc[100]; /* table of contents */
 232
 233     /* Added for ATRAC3 */
 234     unsigned int channels;       /* Number of channels in the stream */
 235     unsigned int extradata_size; /* Size (in bytes) of the codec's extradata from the container */
 236     /* these following two fields are used for local buffering */
 237     char id3v2buf[ID3V2_BUF_SIZE];
 238     char id3v1buf[4][92];
 239
 240     /* resume related */
 241     unsigned long offset;  /* bytes played */
 242     int index;             /* playlist index */
 243
 244     /* runtime database fields */
 245     long tagcache_idx;     /* 0=invalid, otherwise idx+1 */
 246     int rating;
 247     int score;
 248     long playcount;
 249     long lastplayed;
 250     long playtime;
 251
 252     /* replaygain support */
 253
 254 #if CONFIG_CODEC == SWCODEC
 255     char* track_gain_string;
 256     char* album_gain_string;
 257     long track_gain;    /* 7.24 signed fixed point. 0 for no gain. */
 258     long album_gain;
 259     long track_peak;    /* 7.24 signed fixed point. 0 for no peak. */
 260     long album_peak;
 261 #endif
 262
 263     /* Cuesheet support */
 264     struct cuesheet *cuesheet;
 265
 266     /* Musicbrainz Track ID */
 267     char* mb_track_id;
 268 };
 269
 270 unsigned int probe_file_format(const char *filename);
 271 bool get_metadata(struct mp3entry* id3, int fd, const char* trackname);
 272 bool mp3info(struct mp3entry *entry, const char *filename);
 273 void adjust_mp3entry(struct mp3entry *entry, void *dest, const void *orig);
 274 void copy_mp3entry(struct mp3entry *dest, const struct mp3entry *orig);
 275 #if CONFIG_CODEC == SWCODEC
 276 void strip_tags(int handle_id);
 277 #endif
 278
 279 #endif
 280
 281