apps/metadata.c

   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 #include <stdio.h>
  22 #include <string.h>
  23 #include <stdlib.h>
  24 #include <ctype.h>
  25 #include <inttypes.h>
  26
  27 #include "playback.h"
  28 #include "debug.h"
  29 #include "logf.h"
  30 #include "cuesheet.h"
  31 #include "metadata.h"
  32
  33 #include "metadata/metadata_parsers.h"
  34
  35 #if CONFIG_CODEC == SWCODEC
  36
  37 /* For trailing tag stripping */
  38 #include "buffering.h"
  39
  40 #include "metadata/metadata_common.h"
  41
  42 #endif /* CONFIG_CODEC == SWCODEC */
  43
  44 const struct afmt_entry audio_formats[AFMT_NUM_CODECS] =
  45 {
  46     /* Unknown file format */
  47     [AFMT_UNKNOWN] =
  48         AFMT_ENTRY("???", NULL,       NULL,          NULL         ),
  49
  50     /* MPEG Audio layer 1 */
  51     [AFMT_MPA_L1] =
  52         AFMT_ENTRY("MP1", "mpa",      NULL,          "mp1\0"      ),
  53     /* MPEG Audio layer 2 */
  54     [AFMT_MPA_L2] =
  55         AFMT_ENTRY("MP2", "mpa",      NULL,          "mpa\0mp2\0" ),
  56     /* MPEG Audio layer 3 */
  57     [AFMT_MPA_L3] =
  58         AFMT_ENTRY("MP3", "mpa",      "mp3_enc",     "mp3\0"      ),
  59
  60 #if CONFIG_CODEC == SWCODEC
  61     /* Audio Interchange File Format */
  62     [AFMT_AIFF] =
  63         AFMT_ENTRY("AIFF", "aiff",    "aiff_enc",    "aiff\0aif\0"),
  64     /* Uncompressed PCM in a WAV file */
  65     [AFMT_PCM_WAV] =
  66         AFMT_ENTRY("WAV",  "wav",     "wav_enc",     "wav\0"      ),
  67     /* Ogg Vorbis */
  68     [AFMT_OGG_VORBIS] =
  69         AFMT_ENTRY("Ogg",  "vorbis",  NULL,          "ogg\0oga\0" ),
  70     /* FLAC */
  71     [AFMT_FLAC] =
  72         AFMT_ENTRY("FLAC", "flac",    NULL,          "flac\0"     ),
  73     /* Musepack */
  74     [AFMT_MPC] =
  75         AFMT_ENTRY("MPC",  "mpc",     NULL,          "mpc\0"      ),
  76     /* A/52 (aka AC3) audio */
  77     [AFMT_A52] =
  78         AFMT_ENTRY("AC3",  "a52",     NULL,          "a52\0ac3\0" ),
  79     /* WavPack */
  80     [AFMT_WAVPACK] =
  81         AFMT_ENTRY("WV",   "wavpack", "wavpack_enc", "wv\0"       ),
  82     /* Apple Lossless Audio Codec */
  83     [AFMT_MP4_ALAC] =
  84         AFMT_ENTRY("ALAC", "alac",    NULL,          "m4a\0m4b\0" ),
  85     /* Advanced Audio Coding in M4A container */
  86     [AFMT_MP4_AAC] =
  87         AFMT_ENTRY("AAC",  "aac",     NULL,          "mp4\0"      ),
  88     /* Shorten */
  89     [AFMT_SHN] =
  90         AFMT_ENTRY("SHN",  "shorten", NULL,          "shn\0"      ),
  91     /* SID File Format */
  92     [AFMT_SID] =
  93         AFMT_ENTRY("SID",  "sid",     NULL,          "sid\0"      ),
  94     /* ADX File Format */
  95     [AFMT_ADX] =
  96         AFMT_ENTRY("ADX",  "adx",     NULL,          "adx\0"      ),
  97     /* NESM (NES Sound Format) */
  98     [AFMT_NSF] =
  99         AFMT_ENTRY("NSF",  "nsf",     NULL,          "nsf\0nsfe\0"      ),
 100     /* Speex File Format */
 101     [AFMT_SPEEX] =
 102         AFMT_ENTRY("Speex","speex",   NULL,          "spx\0"      ),
 103     /* SPC700 Save State */
 104     [AFMT_SPC] =
 105         AFMT_ENTRY("SPC",  "spc",     NULL,          "spc\0"      ),
 106     /* APE (Monkey's Audio) */
 107     [AFMT_APE] =
 108         AFMT_ENTRY("APE",  "ape",     NULL,          "ape\0mac\0"      ),
 109     /* WMA (WMAV1/V2 in ASF) */
 110     [AFMT_WMA] =
 111         AFMT_ENTRY("WMA",  "wma",     NULL,          "wma\0wmv\0asf\0"   ),
 112     /* Amiga MOD File */
 113     [AFMT_MOD] =
 114         AFMT_ENTRY("MOD",  "mod",     NULL,          "mod\0"      ),
 115     /* Amiga SAP File */
 116     [AFMT_SAP] =
 117         AFMT_ENTRY("SAP",  "asap",     NULL,          "sap\0"      ),
 118     /* Cook in RM/RA */
 119     [AFMT_RM_COOK] =
 120         AFMT_ENTRY("Cook",  "cook",   NULL,          "rm\0ra\0rmvb\0"      ),
 121     /* AAC in RM/RA */
 122     [AFMT_RM_AAC] =
 123         AFMT_ENTRY("RAAC",  "raac",     NULL,        "rm\0ra\0rmvb\0"      ),
 124 #endif
 125 };
 126
 127 #if CONFIG_CODEC == SWCODEC && defined (HAVE_RECORDING)
 128 /* get REC_FORMAT_* corresponding AFMT_* */
 129 const int rec_format_afmt[REC_NUM_FORMATS] =
 130 {
 131     /* give AFMT_UNKNOWN by default */
 132     [0 ... REC_NUM_FORMATS-1] = AFMT_UNKNOWN,
 133     /* add new entries below this line */
 134     [REC_FORMAT_AIFF]    = AFMT_AIFF,
 135     [REC_FORMAT_MPA_L3]  = AFMT_MPA_L3,
 136     [REC_FORMAT_WAVPACK] = AFMT_WAVPACK,
 137     [REC_FORMAT_PCM_WAV] = AFMT_PCM_WAV,
 138 };
 139
 140 /* get AFMT_* corresponding REC_FORMAT_* */
 141 const int afmt_rec_format[AFMT_NUM_CODECS] =
 142 {
 143     /* give -1 by default */
 144     [0 ... AFMT_NUM_CODECS-1] = -1,
 145     /* add new entries below this line */
 146     [AFMT_AIFF]    = REC_FORMAT_AIFF,
 147     [AFMT_MPA_L3]  = REC_FORMAT_MPA_L3,
 148     [AFMT_WAVPACK] = REC_FORMAT_WAVPACK,
 149     [AFMT_PCM_WAV] = REC_FORMAT_PCM_WAV,
 150 };
 151 #endif /* CONFIG_CODEC == SWCODEC && defined (HAVE_RECORDING) */
 152
 153
 154 /* Simple file type probing by looking at the filename extension. */
 155 unsigned int probe_file_format(const char *filename)
 156 {
 157     char *suffix;
 158     unsigned int i;
 159
 160     suffix = strrchr(filename, '.');
 161
 162     if (suffix == NULL)
 163     {
 164         return AFMT_UNKNOWN;
 165     }
 166
 167     /* skip '.' */
 168     suffix++;
 169
 170     for (i = 1; i < AFMT_NUM_CODECS; i++)
 171     {
 172         /* search extension list for type */
 173         const char *ext = audio_formats[i].ext_list;
 174
 175         do
 176         {
 177             if (strcasecmp(suffix, ext) == 0)
 178             {
 179                 return i;
 180             }
 181
 182             ext += strlen(ext) + 1;
 183         }
 184         while (*ext != '\0');
 185     }
 186
 187     return AFMT_UNKNOWN;
 188 }
 189
 190 /* Note, that this returns false for successful, true for error! */
 191 bool mp3info(struct mp3entry *entry, const char *filename)
 192 {
 193     int fd;
 194     bool result;
 195
 196     fd = open(filename, O_RDONLY);
 197     if (fd < 0)
 198         return true;
 199
 200     result = !get_mp3_metadata(fd, entry, filename);
 201
 202     close(fd);
 203
 204     return result;
 205 }
 206
 207 /* Get metadata for track - return false if parsing showed problems with the
 208  * file that would prevent playback.
 209  */
 210 bool get_metadata(struct mp3entry* id3, int fd, const char* trackname)
 211 {
 212 #if CONFIG_CODEC == SWCODEC
 213     unsigned char* buf;
 214 #endif
 215
 216     /* Clear the mp3entry to avoid having bogus pointers appear */
 217     memset(id3, 0, sizeof(struct mp3entry));
 218
 219     /* Take our best guess at the codec type based on file extension */
 220     id3->codectype = probe_file_format(trackname);
 221
 222     /* Load codec specific track tag information and confirm the codec type. */
 223     switch (id3->codectype)
 224     {
 225     case AFMT_MPA_L1:
 226     case AFMT_MPA_L2:
 227     case AFMT_MPA_L3:
 228         if (!get_mp3_metadata(fd, id3, trackname))
 229         {
 230             return false;
 231         }
 232
 233         break;
 234
 235 #if CONFIG_CODEC == SWCODEC
 236     case AFMT_FLAC:
 237         if (!get_flac_metadata(fd, id3))
 238         {
 239             return false;
 240         }
 241
 242         break;
 243
 244     case AFMT_WMA:
 245         if (!get_asf_metadata(fd, id3))
 246         {
 247             return false;
 248         }
 249         break;
 250
 251     case AFMT_APE:
 252         if (!get_monkeys_metadata(fd, id3))
 253         {
 254             return false;
 255         }
 256         read_ape_tags(fd, id3);
 257         break;
 258
 259     case AFMT_MPC:
 260         if (!get_musepack_metadata(fd, id3))
 261             return false;
 262         read_ape_tags(fd, id3);
 263         break;
 264
 265     case AFMT_OGG_VORBIS:
 266     case AFMT_SPEEX:
 267         if (!get_ogg_metadata(fd, id3))/*detects and handles Ogg/Speex files*/
 268         {
 269             return false;
 270         }
 271
 272         break;
 273
 274     case AFMT_PCM_WAV:
 275         if (!get_wave_metadata(fd, id3))
 276         {
 277             return false;
 278         }
 279
 280         break;
 281
 282     case AFMT_WAVPACK:
 283         if (!get_wavpack_metadata(fd, id3))
 284         {
 285             return false;
 286         }
 287
 288         read_ape_tags(fd, id3);     /* use any apetag info we find */
 289         break;
 290
 291     case AFMT_A52:
 292         if (!get_a52_metadata(fd, id3))
 293         {
 294             return false;
 295         }
 296
 297         break;
 298
 299     case AFMT_MP4_ALAC:
 300     case AFMT_MP4_AAC:
 301         if (!get_mp4_metadata(fd, id3))
 302         {
 303             return false;
 304         }
 305
 306         break;
 307
 308     case AFMT_MOD:
 309         if (!get_mod_metadata(fd, id3))
 310         {
 311             return false;
 312         }
 313
 314         break;
 315
 316     case AFMT_SHN:
 317         id3->vbr = true;
 318         id3->filesize = filesize(fd);
 319         if (!skip_id3v2(fd, id3))
 320         {
 321             return false;
 322         }
 323         /* TODO: read the id3v2 header if it exists */
 324         break;
 325
 326     case AFMT_SID:
 327         if (!get_sid_metadata(fd, id3))
 328         {
 329             return false;
 330         }
 331         break;
 332
 333     case AFMT_SPC:
 334         if (!get_spc_metadata(fd, id3))
 335         {
 336             DEBUGF("get_spc_metadata error\n");
 337             return false;
 338         }
 339         id3->filesize = filesize(fd);
 340         id3->genre_string = id3_get_num_genre(36);
 341         break;
 342
 343     case AFMT_ADX:
 344         if (!get_adx_metadata(fd, id3))
 345         {
 346             DEBUGF("get_adx_metadata error\n");
 347             return false;
 348         }
 349
 350         break;
 351
 352     case AFMT_NSF:
 353         buf = (unsigned char *)id3->path;
 354         if ((lseek(fd, 0, SEEK_SET) < 0) || ((read(fd, buf, 8)) < 8))
 355         {
 356             DEBUGF("lseek or read failed\n");
 357             return false;
 358         }
 359         id3->vbr = false;
 360         id3->filesize = filesize(fd);
 361         if (memcmp(buf,"NESM",4) && memcmp(buf,"NSFE",4)) return false;
 362         break;
 363
 364     case AFMT_AIFF:
 365         if (!get_aiff_metadata(fd, id3))
 366         {
 367             return false;
 368         }
 369
 370         break;
 371
 372     case AFMT_SAP:
 373         if (!get_asap_metadata(fd, id3))
 374         {
 375             DEBUGF("get_sap_metadata error\n");
 376             return false;
 377         }
 378         id3->filesize = filesize(fd);
 379         id3->genre_string = id3_get_num_genre(36);
 380         break;
 381
 382     case AFMT_RM_COOK:
 383         if (!get_rm_metadata(fd, id3))
 384         {
 385             DEBUGF("get_rm_metadata error\n");
 386             return false;
 387         }
 388         break;
 389
 390 #endif /* CONFIG_CODEC == SWCODEC */
 391
 392     default:
 393         /* If we don't know how to read the metadata, assume we can't play
 394            the file */
 395         return false;
 396         break;
 397     }
 398
 399     /* We have successfully read the metadata from the file */
 400
 401     lseek(fd, 0, SEEK_SET);
 402     strlcpy(id3->path, trackname, sizeof(id3->path));
 403
 404     return true;
 405 }
 406
 407 #ifndef __PCTOOL__
 408 #if CONFIG_CODEC == SWCODEC
 409 void strip_tags(int handle_id)
 410 {
 411     static const unsigned char tag[] = "TAG";
 412     static const unsigned char apetag[] = "APETAGEX";
 413     size_t len, version;
 414     void *tail;
 415
 416     if (bufgettail(handle_id, 128, &tail) != 128)
 417         return;
 418
 419     if (memcmp(tail, tag, 3) == 0)
 420     {
 421         /* Skip id3v1 tag */
 422         logf("Cutting off ID3v1 tag");
 423         bufcuttail(handle_id, 128);
 424     }
 425
 426     /* Get a new tail, as the old one may have been cut */
 427     if (bufgettail(handle_id, 32, &tail) != 32)
 428         return;
 429
 430     /* Check for APE tag (look for the APE tag footer) */
 431     if (memcmp(tail, apetag, 8) != 0)
 432         return;
 433
 434     /* Read the version and length from the footer */
 435     version = get_long_le(&((unsigned char *)tail)[8]);
 436     len = get_long_le(&((unsigned char *)tail)[12]);
 437     if (version == 2000)
 438         len += 32; /* APEv2 has a 32 byte header */
 439
 440     /* Skip APE tag */
 441     logf("Cutting off APE tag (%ldB)", len);
 442     bufcuttail(handle_id, len);
 443 }
 444 #endif /* CONFIG_CODEC == SWCODEC */
 445 #endif /* ! __PCTOOL__ */
 446
 447 void adjust_mp3entry(struct mp3entry *entry, void *dest, const void *orig)
 448 {
 449     long offset;
 450     if (orig > dest)
 451         offset = - ((size_t)orig - (size_t)dest);
 452     else
 453         offset = (size_t)dest - (size_t)orig;
 454
 455     if (entry->title)
 456         entry->title += offset;
 457     if (entry->artist)
 458         entry->artist += offset;
 459     if (entry->album)
 460         entry->album += offset;
 461     if (entry->genre_string && !id3_is_genre_string(entry->genre_string))
 462         /* Don't adjust that if it points to an entry of the "genres" array */
 463         entry->genre_string += offset;
 464     if (entry->track_string)
 465         entry->track_string += offset;
 466     if (entry->disc_string)
 467         entry->disc_string += offset;
 468     if (entry->year_string)
 469         entry->year_string += offset;
 470     if (entry->composer)
 471         entry->composer += offset;
 472     if (entry->comment)
 473         entry->comment += offset;
 474     if (entry->albumartist)
 475         entry->albumartist += offset;
 476     if (entry->grouping)
 477         entry->grouping += offset;
 478 #if CONFIG_CODEC == SWCODEC
 479     if (entry->track_gain_string)
 480         entry->track_gain_string += offset;
 481     if (entry->album_gain_string)
 482         entry->album_gain_string += offset;
 483 #endif
 484     if (entry->mb_track_id)
 485         entry->mb_track_id += offset;
 486 }
 487
 488 void copy_mp3entry(struct mp3entry *dest, const struct mp3entry *orig)
 489 {
 490     memcpy(dest, orig, sizeof(struct mp3entry));
 491     adjust_mp3entry(dest, dest, orig);
 492 }