src/main.c

   1 /*
   2  * Copyright (C) 2013 nu774
   3  * For conditions of distribution and use, see copyright notice in COPYING
   4  */
   5 #if HAVE_CONFIG_H
   6 #  include "config.h"
   7 #endif
   8 #if HAVE_STDINT_H
   9 #  include <stdint.h>
  10 #endif
  11 #if HAVE_INTTYPES_H
  12 #  include <inttypes.h>
  13 #elif defined(_MSC_VER)
  14 #  define SCNd64 "I64d"
  15 #endif
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <ctype.h>
  20 #include <locale.h>
  21 #include <errno.h>
  22 #include <sys/stat.h>
  23 #include <getopt.h>
  24 #if HAVE_UNISTD_H
  25 #include <unistd.h>
  26 #endif
  27 #ifdef _WIN32
  28 #include <io.h>
  29 #endif
  30 #include "compat.h"
  31 #include "wav_reader.h"
  32 #include "aacenc.h"
  33 #include "m4af.h"
  34 #include "progress.h"
  35 #include "version.h"
  36
  37 #define PROGNAME "fdkaac"
  38
  39 static
  40 int read_callback(void *cookie, void *data, uint32_t size)
  41 {
  42     size_t rc = fread(data, 1, size, (FILE*)cookie);
  43     return ferror((FILE*)cookie) ? -1 : (int)rc;
  44 }
  45
  46 static
  47 int write_callback(void *cookie, const void *data, uint32_t size)
  48 {
  49     size_t rc = fwrite(data, 1, size, (FILE*)cookie);
  50     return ferror((FILE*)cookie) ? -1 : (int)rc;
  51 }
  52
  53 static
  54 int seek_callback(void *cookie, int64_t off, int whence)
  55 {
  56     return fseeko((FILE*)cookie, off, whence);
  57 }
  58
  59 static
  60 int64_t tell_callback(void *cookie)
  61 {
  62     return ftello((FILE*)cookie);
  63 }
  64
  65 static
  66 void usage(void)
  67 {
  68     printf(
  69 PROGNAME " %s\n"
  70 "Usage: " PROGNAME " [options] input_file\n"
  71 "Options:\n"
  72 " -h, --help                    Print this help message\n"
  73 " -p, --profile <n>             Profile (audio object type)\n"
  74 "                                 2: MPEG-4 AAC LC (default)\n"
  75 "                                 5: MPEG-4 HE-AAC (SBR)\n"
  76 "                                29: MPEG-4 HE-AAC v2 (SBR+PS)\n"
  77 "                                23: MPEG-4 AAC LD\n"
  78 "                                39: MPEG-4 AAC ELD\n"
  79 "                               129: MPEG-2 AAC LC\n"
  80 "                               132: MPEG-2 HE-AAC (SBR)\n"
  81 "                               156: MPEG-2 HE-AAC v2 (SBR+PS)\n"
  82 " -b, --bitrate <n>             Bitrate in bits per seconds (for CBR)\n"
  83 " -m, --bitrate-mode <n>        Bitrate configuration\n"
  84 "                                 0: CBR (default)\n"
  85 "                                 1-5: VBR\n"
  86 "                               (VBR mode is not officially supported, and\n"
  87 "                                works only on a certain combination of\n"
  88 "                                parameter settings, sample rate, and\n"
  89 "                                channel configuration)\n"
  90 " -w, --bandwidth <n>           Frequency bandwidth in Hz (AAC LC only)\n"
  91 " -a, --afterburner <n>         Afterburner\n"
  92 "                                 0: Off\n"
  93 "                                 1: On(default)\n"
  94 " -L, --lowdelay-sbr            Enable ELD-SBR (AAC ELD only)\n"
  95 " -s, --sbr-signaling <n>       SBR signaling mode\n"
  96 "                                 0: Implicit, backward compatible(default)\n"
  97 "                                 1: Explicit SBR and implicit PS\n"
  98 "                                 2: Explicit hierarchical signaling\n"
  99 " -f, --transport-format <n>    Transport format\n"
 100 "                                 0: RAW (default, muxed into M4A)\n"
 101 "                                 1: ADIF\n"
 102 "                                 2: ADTS\n"
 103 "                                 6: LATM MCP=1\n"
 104 "                                 7: LATM MCP=0\n"
 105 "                                10: LOAS/LATM (LATM within LOAS)\n"
 106 " -C, --adts-crc-check          Add CRC protection on ADTS header\n"
 107 " -h, --header-period <n>       StreamMuxConfig/PCE repetition period in\n"
 108 "                               transport layer\n"
 109 "\n"
 110 " -o <filename>                 Output filename\n"
 111 " --ignorelength                Ignore length of WAV header\n"
 112 "\n"
 113 "Options for raw (headerless) input:\n"
 114 " -R, --raw                     Treat input as raw (by default WAV is\n"
 115 "                               assumed)\n"
 116 " --raw-channels <n>            Number of channels (default: 2)\n"
 117 " --raw-rate     <n>            Sample rate (default: 44100)\n"
 118 " --raw-format   <spec>         Sample format, default is \"S16L\".\n"
 119 "                               Spec is as follows:\n"
 120 "                                1st char: S(igned)|U(nsigned)|F(loat)\n"
 121 "                                2nd part: bits per channel\n"
 122 "                                Last char: L(ittle)|B(ig)\n"
 123 "                               Last char can be omitted, in which case L is\n"
 124 "                               assumed. Spec is case insensitive, therefore\n"
 125 "                               \"u16b\" is same as \"U16B\".\n"
 126 "\n"
 127 "Tagging options:\n"
 128 " --title <string>\n"
 129 " --artist <string>\n"
 130 " --album <string>\n"
 131 " --genre <string>\n"
 132 " --date <string>\n"
 133 " --composer <string>\n"
 134 " --grouping <string>\n"
 135 " --comment <string>\n"
 136 " --album-artist <string>\n"
 137 " --track <number[/total]>\n"
 138 " --disk <number[/total]>\n"
 139 " --tempo <n>\n"
 140 " --tag <fcc>:<value>          Set iTunes predefined tag with four char code.\n"
 141 " --long-tag <name>:<value>    Set arbitrary tag as iTunes custom metadata.\n"
 142     , fdkaac_version);
 143 }
 144
 145 typedef struct aacenc_tag_entry_t {
 146     uint32_t tag;
 147     const char *name;
 148     const char *data;
 149     uint32_t data_size;
 150 } aacenc_tag_entry_t;
 151
 152 typedef struct aacenc_param_ex_t {
 153     AACENC_PARAMS
 154
 155     char *input_filename;
 156     char *output_filename;
 157     unsigned ignore_length;
 158
 159     int is_raw;
 160     unsigned raw_channels;
 161     unsigned raw_rate;
 162     const char *raw_format;
 163
 164     aacenc_tag_entry_t *tag_table;
 165     unsigned tag_count;
 166     unsigned tag_table_capacity;
 167 } aacenc_param_ex_t;
 168
 169 static
 170 void param_add_itmf_entry(aacenc_param_ex_t *params, uint32_t tag,
 171                          const char *key, const char *value, uint32_t size)
 172 {
 173     aacenc_tag_entry_t *entry;
 174     if (params->tag_count == params->tag_table_capacity) {
 175         unsigned newsize = params->tag_table_capacity;
 176         newsize = newsize ? newsize * 2 : 1;
 177         params->tag_table =
 178             realloc(params->tag_table, newsize * sizeof(aacenc_tag_entry_t));
 179         params->tag_table_capacity = newsize;
 180     }
 181     entry = params->tag_table + params->tag_count;
 182     entry->tag = tag;
 183     if (tag == M4AF_FOURCC('-','-','-','-'))
 184         entry->name = key;
 185     entry->data = value;
 186     entry->data_size = size;
 187     params->tag_count++;
 188 }
 189
 190 static
 191 int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
 192 {
 193     int ch;
 194     unsigned n;
 195
 196 #define OPT_RAW_CHANNELS M4AF_FOURCC('r','c','h','n')
 197 #define OPT_RAW_RATE     M4AF_FOURCC('r','r','a','t')
 198 #define OPT_RAW_FORMAT   M4AF_FOURCC('r','f','m','t')
 199 #define OPT_SHORT_TAG    M4AF_FOURCC('s','t','a','g')
 200 #define OPT_LONG_TAG     M4AF_FOURCC('l','t','a','g')
 201
 202     static struct option long_options[] = {
 203         { "help",             no_argument,       0, 'h' },
 204         { "profile",          required_argument, 0, 'p' },
 205         { "bitrate",          required_argument, 0, 'b' },
 206         { "bitrate-mode",     required_argument, 0, 'm' },
 207         { "bandwidth",        required_argument, 0, 'w' },
 208         { "afterburner",      required_argument, 0, 'a' },
 209         { "lowdelay-sbr",     no_argument,       0, 'L' },
 210         { "sbr-signaling",    required_argument, 0, 's' },
 211         { "transport-format", required_argument, 0, 'f' },
 212         { "adts-crc-check",   no_argument,       0, 'C' },
 213         { "header-period",    required_argument, 0, 'P' },
 214
 215         { "ignorelength",     no_argument,       0, 'I' },
 216
 217         { "raw",              no_argument,       0, 'R' },
 218         { "raw-channels",     required_argument, 0, OPT_RAW_CHANNELS       },
 219         { "raw-rate",         required_argument, 0, OPT_RAW_RATE           },
 220         { "raw-format",       required_argument, 0, OPT_RAW_FORMAT         },
 221
 222         { "title",            required_argument, 0, M4AF_TAG_TITLE         },
 223         { "artist",           required_argument, 0, M4AF_TAG_ARTIST        },
 224         { "album",            required_argument, 0, M4AF_TAG_ALBUM         },
 225         { "genre",            required_argument, 0, M4AF_TAG_GENRE         },
 226         { "date",             required_argument, 0, M4AF_TAG_DATE          },
 227         { "composer",         required_argument, 0, M4AF_TAG_COMPOSER      },
 228         { "grouping",         required_argument, 0, M4AF_TAG_GROUPING      },
 229         { "comment",          required_argument, 0, M4AF_TAG_COMMENT       },
 230         { "album-artist",     required_argument, 0, M4AF_TAG_ALBUM_ARTIST  },
 231         { "track",            required_argument, 0, M4AF_TAG_TRACK         },
 232         { "disk",             required_argument, 0, M4AF_TAG_DISK          },
 233         { "tempo",            required_argument, 0, M4AF_TAG_TEMPO         },
 234         { "tag",              required_argument, 0, OPT_SHORT_TAG          },
 235         { "long-tag",         required_argument, 0, OPT_LONG_TAG           },
 236         { 0,                  0,                 0, 0                      },
 237     };
 238     params->afterburner = 1;
 239
 240     aacenc_getmainargs(&argc, &argv);
 241     while ((ch = getopt_long(argc, argv, "hp:b:m:w:a:Ls:f:CP:Io:R",
 242                              long_options, 0)) != EOF) {
 243         switch (ch) {
 244         case 'h':
 245             return usage(), -1;
 246         case 'p':
 247             if (sscanf(optarg, "%u", &n) != 1) {
 248                 fprintf(stderr, "invalid arg for profile\n");
 249                 return -1;
 250             }
 251             params->profile = n;
 252             break;
 253         case 'b':
 254             if (sscanf(optarg, "%u", &n) != 1) {
 255                 fprintf(stderr, "invalid arg for bitrate\n");
 256                 return -1;
 257             }
 258             params->bitrate = n;
 259             break;
 260         case 'm':
 261             if (sscanf(optarg, "%u", &n) != 1 || n > 5) {
 262                 fprintf(stderr, "invalid arg for bitrate-mode\n");
 263                 return -1;
 264             }
 265             params->bitrate_mode = n;
 266             break;
 267         case 'w':
 268             if (sscanf(optarg, "%u", &n) != 1) {
 269                 fprintf(stderr, "invalid arg for bandwidth\n");
 270                 return -1;
 271             }
 272             params->bandwidth = n;
 273             break;
 274         case 'a':
 275             if (sscanf(optarg, "%u", &n) != 1 || n > 1) {
 276                 fprintf(stderr, "invalid arg for afterburner\n");
 277                 return -1;
 278             }
 279             params->afterburner = n;
 280             break;
 281         case 'L':
 282             params->lowdelay_sbr = 1;
 283             break;
 284         case 's':
 285             if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
 286                 fprintf(stderr, "invalid arg for sbr-signaling\n");
 287                 return -1;
 288             }
 289             params->sbr_signaling = n;
 290             break;
 291         case 'f':
 292             if (sscanf(optarg, "%u", &n) != 1) {
 293                 fprintf(stderr, "invalid arg for transport-format\n");
 294                 return -1;
 295             }
 296             params->transport_format = n;
 297             break;
 298         case 'c':
 299             params->adts_crc_check = 1;
 300             break;
 301         case 'P':
 302             if (sscanf(optarg, "%u", &n) != 1) {
 303                 fprintf(stderr, "invalid arg for header-period\n");
 304                 return -1;
 305             }
 306             params->header_period = n;
 307             break;
 308         case 'o':
 309             params->output_filename = optarg;
 310             break;
 311         case 'I':
 312             params->ignore_length = 1;
 313             break;
 314         case 'R':
 315             params->is_raw = 1;
 316             break;
 317         case OPT_RAW_CHANNELS:
 318             if (sscanf(optarg, "%u", &n) != 1) {
 319                 fprintf(stderr, "invalid arg for raw-channels\n");
 320                 return -1;
 321             }
 322             params->raw_channels = n;
 323             break;
 324         case OPT_RAW_RATE:
 325             if (sscanf(optarg, "%u", &n) != 1) {
 326                 fprintf(stderr, "invalid arg for raw-rate\n");
 327                 return -1;
 328             }
 329             params->raw_rate = n;
 330             break;
 331         case OPT_RAW_FORMAT:
 332             params->raw_format = optarg;
 333             break;
 334         case M4AF_TAG_TITLE:
 335         case M4AF_TAG_ARTIST:
 336         case M4AF_TAG_ALBUM:
 337         case M4AF_TAG_GENRE:
 338         case M4AF_TAG_DATE:
 339         case M4AF_TAG_COMPOSER:
 340         case M4AF_TAG_GROUPING:
 341         case M4AF_TAG_COMMENT:
 342         case M4AF_TAG_ALBUM_ARTIST:
 343         case M4AF_TAG_TRACK:
 344         case M4AF_TAG_DISK:
 345         case M4AF_TAG_TEMPO:
 346             param_add_itmf_entry(params, ch, 0, optarg, strlen(optarg));
 347             break;
 348         case OPT_SHORT_TAG:
 349         case OPT_LONG_TAG:
 350             {
 351                 char *val;
 352                 size_t klen;
 353                 unsigned fcc = M4AF_FOURCC('-','-','-','-');
 354
 355                 if ((val = strchr(optarg, ':')) == 0) {
 356                     fprintf(stderr, "invalid arg for tag\n");
 357                     return -1;
 358                 }
 359                 *val++ = '\0';
 360                 if (ch == OPT_SHORT_TAG) {
 361                     /*
 362                      * take care of U+00A9(COPYRIGHT SIGN).
 363                      * 1) if length of fcc is 3, we prepend '\xa9'.
 364                      * 2) U+00A9 becomes "\xc2\xa9" in UTF-8. Therefore
 365                      *    we remove first '\xc2'.
 366                      */
 367                     if (optarg[0] == '\xc2')
 368                         ++optarg;
 369                     if ((klen = strlen(optarg))== 3)
 370                         fcc = 0xa9;
 371                     else if (klen != 4) {
 372                         fprintf(stderr, "invalid arg for tag\n");
 373                         return -1;
 374                     }
 375                     for (; *optarg; ++optarg)
 376                         fcc = ((fcc << 8) | (*optarg & 0xff));
 377                 }
 378                 param_add_itmf_entry(params, fcc, optarg, val, strlen(val));
 379             }
 380             break;
 381         default:
 382             return usage(), -1;
 383         }
 384     }
 385     if (argc == optind)
 386         return usage(), -1;
 387
 388     if (!params->bitrate && !params->bitrate_mode) {
 389         fprintf(stderr, "bitrate or bitrate-mode is mandatory\n");
 390         return -1;
 391     }
 392     if (params->output_filename && !strcmp(params->output_filename, "-") &&
 393         !params->transport_format) {
 394         fprintf(stderr, "stdout streaming is not available on M4A output\n");
 395         return -1;
 396     }
 397     if (params->bitrate && params->bitrate < 10000)
 398         params->bitrate *= 1000;
 399
 400     if (params->is_raw) {
 401         if (!params->raw_channels)
 402             params->raw_channels = 2;
 403         if (!params->raw_rate)
 404             params->raw_rate = 44100;
 405         if (!params->raw_format)
 406             params->raw_format = "S16L";
 407     }
 408     params->input_filename = argv[optind];
 409     return 0;
 410 };
 411
 412 static
 413 int write_sample(FILE *ofp, m4af_writer_t *m4af,
 414                  const void *data, uint32_t size, uint32_t duration)
 415 {
 416     if (!m4af) {
 417         fwrite(data, 1, size, ofp);
 418         if (ferror(ofp)) {
 419             fprintf(stderr, "ERROR: fwrite(): %s\n", strerror(errno));
 420             return -1;
 421         }
 422     } else if (m4af_write_sample(m4af, 0, data, size, duration) < 0) {
 423         fprintf(stderr, "ERROR: failed to write m4a sample\n");
 424         return -1;
 425     }
 426     return 0;
 427 }
 428
 429 static
 430 int encode(wav_reader_t *wavf, HANDLE_AACENCODER encoder,
 431            uint32_t frame_length, FILE *ofp, m4af_writer_t *m4af)
 432 {
 433     uint8_t *ibuf = 0;
 434     int16_t *pcmbuf = 0;
 435     uint32_t pcmsize = 0;
 436     uint8_t *obuf = 0;
 437     uint32_t olen;
 438     uint32_t osize = 0;
 439     int nread = 1;
 440     int consumed;
 441     int rc = -1;
 442     int frames_written = 0;
 443     aacenc_progress_t progress = { 0 };
 444     const pcm_sample_description_t *format = wav_get_format(wavf);
 445
 446     ibuf = malloc(frame_length * format->bytes_per_frame);
 447     aacenc_progress_init(&progress, wav_get_length(wavf), format->sample_rate);
 448     do {
 449         if (nread) {
 450             if ((nread = wav_read_frames(wavf, ibuf, frame_length)) < 0) {
 451                 fprintf(stderr, "ERROR: read failed\n");
 452                 goto END;
 453             } else if (nread > 0) {
 454                 if (pcm_convert_to_native_sint16(format, ibuf, nread,
 455                                                  &pcmbuf, &pcmsize) < 0) {
 456                     fprintf(stderr, "ERROR: unsupported sample format\n");
 457                     goto END;
 458                 }
 459             }
 460             aacenc_progress_update(&progress, wav_get_position(wavf),
 461                                    format->sample_rate * 2);
 462         }
 463         if ((consumed = aac_encode_frame(encoder, format, pcmbuf, nread,
 464                                          &obuf, &olen, &osize)) < 0)
 465             goto END;
 466         if (olen > 0) {
 467             if (write_sample(ofp, m4af, obuf, olen, frame_length) < 0)
 468                 goto END;
 469             ++frames_written;
 470         }
 471     } while (nread > 0 || olen > 0);
 472     aacenc_progress_finish(&progress, wav_get_position(wavf));
 473     rc = frames_written;
 474 END:
 475     if (ibuf) free(ibuf);
 476     if (pcmbuf) free(pcmbuf);
 477     if (obuf) free(obuf);
 478     return rc;
 479 }
 480
 481 static
 482 void put_tag_entry(m4af_writer_t *m4af, const aacenc_tag_entry_t *tag)
 483 {
 484     unsigned m, n = 0;
 485
 486     switch (tag->tag) {
 487     case M4AF_TAG_TRACK:
 488         if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
 489             m4af_add_itmf_track_tag(m4af, m, n);
 490         break;
 491     case M4AF_TAG_DISK:
 492         if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
 493             m4af_add_itmf_disk_tag(m4af, m, n);
 494         break;
 495     case M4AF_TAG_GENRE_ID3:
 496         if (sscanf(tag->data, "%u", &n) == 1)
 497             m4af_add_itmf_genre_tag(m4af, n);
 498         break;
 499     case M4AF_TAG_TEMPO:
 500         if (sscanf(tag->data, "%u", &n) == 1)
 501             m4af_add_itmf_int16_tag(m4af, tag->tag, n);
 502         break;
 503     case M4AF_TAG_COMPILATION:
 504     case M4AF_FOURCC('a','k','I','D'):
 505     case M4AF_FOURCC('h','d','v','d'):
 506     case M4AF_FOURCC('p','c','s','t'):
 507     case M4AF_FOURCC('p','g','a','p'):
 508     case M4AF_FOURCC('r','t','n','g'):
 509     case M4AF_FOURCC('s','t','i','k'):
 510         if (sscanf(tag->data, "%u", &n) == 1)
 511             m4af_add_itmf_int8_tag(m4af, tag->tag, n);
 512         break;
 513     case M4AF_FOURCC('a','t','I','D'):
 514     case M4AF_FOURCC('c','m','I','D'):
 515     case M4AF_FOURCC('c','n','I','D'):
 516     case M4AF_FOURCC('g','e','I','D'):
 517     case M4AF_FOURCC('s','f','I','D'):
 518     case M4AF_FOURCC('t','v','s','n'):
 519     case M4AF_FOURCC('t','v','s','s'):
 520         if (sscanf(tag->data, "%u", &n) == 1)
 521             m4af_add_itmf_int32_tag(m4af, tag->tag, n);
 522         break;
 523     case M4AF_FOURCC('p','l','I','D'):
 524         {
 525             int64_t qn;
 526             if (sscanf(tag->data, "%" SCNd64, &qn) == 1)
 527                 m4af_add_itmf_int64_tag(m4af, tag->tag, qn);
 528             break;
 529         }
 530     case M4AF_TAG_ARTWORK:
 531         {
 532             int data_type = 0;
 533             if (!memcmp(tag->data, "GIF", 3))
 534                 data_type = M4AF_GIF;
 535             else if (!memcmp(tag->data, "\xff\xd8\xff", 3))
 536                 data_type = M4AF_JPEG;
 537             else if (!memcmp(tag->data, "\x89PNG", 4))
 538                 data_type = M4AF_PNG;
 539             if (data_type)
 540                 m4af_add_itmf_short_tag(m4af, tag->tag, data_type,
 541                                         tag->data, tag->data_size);
 542             break;
 543         }
 544     case M4AF_FOURCC('-','-','-','-'):
 545         {
 546             char *u8 = aacenc_to_utf8(tag->data);
 547             m4af_add_itmf_long_tag(m4af, tag->name, u8);
 548             free(u8);
 549             break;
 550         }
 551     case M4AF_TAG_TITLE:
 552     case M4AF_TAG_ARTIST:
 553     case M4AF_TAG_ALBUM:
 554     case M4AF_TAG_GENRE:
 555     case M4AF_TAG_DATE:
 556     case M4AF_TAG_COMPOSER:
 557     case M4AF_TAG_GROUPING:
 558     case M4AF_TAG_COMMENT:
 559     case M4AF_TAG_LYRICS:
 560     case M4AF_TAG_TOOL:
 561     case M4AF_TAG_ALBUM_ARTIST:
 562     case M4AF_TAG_DESCRIPTION:
 563     case M4AF_TAG_LONG_DESCRIPTION:
 564     case M4AF_TAG_COPYRIGHT:
 565     case M4AF_FOURCC('a','p','I','D'):
 566     case M4AF_FOURCC('c','a','t','g'):
 567     case M4AF_FOURCC('k','e','y','w'):
 568     case M4AF_FOURCC('p','u','r','d'):
 569     case M4AF_FOURCC('p','u','r','l'):
 570     case M4AF_FOURCC('s','o','a','a'):
 571     case M4AF_FOURCC('s','o','a','l'):
 572     case M4AF_FOURCC('s','o','a','r'):
 573     case M4AF_FOURCC('s','o','c','o'):
 574     case M4AF_FOURCC('s','o','n','m'):
 575     case M4AF_FOURCC('s','o','s','n'):
 576     case M4AF_FOURCC('t','v','e','n'):
 577     case M4AF_FOURCC('t','v','n','n'):
 578     case M4AF_FOURCC('t','v','s','h'):
 579     case M4AF_FOURCC('x','i','d',' '):
 580     case M4AF_FOURCC('\xa9','e','n','c'):
 581     case M4AF_FOURCC('\xa9','s','t','3'):
 582         {
 583             char *u8 = aacenc_to_utf8(tag->data);
 584             m4af_add_itmf_string_tag(m4af, tag->tag, u8);
 585             free(u8);
 586             break;
 587         }
 588     default:
 589         fprintf(stderr, "WARNING: unknown/unsupported tag: %c%c%c%c\n",
 590                 tag->tag >> 24, (tag->tag >> 16) & 0xff,
 591                 (tag->tag >> 8) & 0xff, tag->tag & 0xff);
 592     }
 593 }
 594
 595 static
 596 void put_tool_tag(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
 597                   HANDLE_AACENCODER encoder)
 598 {
 599     char tool_info[256];
 600     char *p = tool_info;
 601     LIB_INFO *lib_info = 0;
 602
 603     p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
 604
 605     lib_info = calloc(FDK_MODULE_LAST, sizeof(LIB_INFO));
 606     if (aacEncGetLibInfo(lib_info) == AACENC_OK) {
 607         int i;
 608         for (i = 0; i < FDK_MODULE_LAST; ++i)
 609             if (lib_info[i].module_id == FDK_AACENC)
 610                 break;
 611         p += sprintf(p, "libfdk-aac %s, ", lib_info[i].versionStr);
 612     }
 613     free(lib_info);
 614     if (params->bitrate_mode)
 615         sprintf(p, "VBR mode %d", params->bitrate_mode);
 616     else
 617         sprintf(p, "CBR %dkbps",
 618                 aacEncoder_GetParam(encoder, AACENC_BITRATE) / 1000);
 619
 620     m4af_add_itmf_string_tag(m4af, M4AF_TAG_TOOL, tool_info);
 621 }
 622
 623 static
 624 int finalize_m4a(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
 625                  HANDLE_AACENCODER encoder)
 626 {
 627     unsigned i;
 628     aacenc_tag_entry_t *tag = params->tag_table;
 629     for (i = 0; i < params->tag_count; ++i, ++tag)
 630         put_tag_entry(m4af, tag);
 631
 632     put_tool_tag(m4af, params, encoder);
 633
 634     if (m4af_finalize(m4af) < 0) {
 635         fprintf(stderr, "ERROR: failed to finalize m4a\n");
 636         return -1;
 637     }
 638     return 0;
 639 }
 640
 641 static
 642 char *generate_output_filename(const char *filename, const char *ext)
 643 {
 644     char *p = 0;
 645     size_t ext_len = strlen(ext);
 646
 647     if (strcmp(filename, "-") == 0) {
 648         p = malloc(ext_len + 6);
 649         sprintf(p, "stdin%s", ext);
 650     } else {
 651         const char *base = aacenc_basename(filename);
 652         size_t ilen = strlen(base);
 653         const char *ext_org = strrchr(base, '.');
 654         if (ext_org) ilen = ext_org - base;
 655         p = malloc(ilen + ext_len + 1);
 656         sprintf(p, "%.*s%s", ilen, base, ext);
 657     }
 658     return p;
 659 }
 660
 661 static
 662 int parse_raw_spec(const char *spec, pcm_sample_description_t *desc)
 663 {
 664     unsigned bits;
 665     unsigned char c_type, c_endian = 'L';
 666     int type;
 667
 668     if (sscanf(spec, "%c%u%c", &c_type, &bits, &c_endian) < 2)
 669         return -1;
 670     c_type = toupper(c_type);
 671     c_endian = toupper(c_endian);
 672
 673     if (c_type == 'S')
 674         type = 1;
 675     else if (c_type == 'U')
 676         type = 2;
 677     else if (c_type == 'F')
 678         type = 4;
 679     else
 680         return -1;
 681
 682     if (c_endian == 'B')
 683         type |= 8;
 684     else if (c_endian != 'L')
 685         return -1;
 686
 687     if (c_type == 'F' && bits != 32 && bits != 64)
 688         return -1;
 689     if (c_type != 'F' && (bits < 8 || bits > 32))
 690         return -1;
 691
 692     desc->sample_type = type;
 693     desc->bits_per_channel = bits;
 694     return 0;
 695 }
 696
 697 int main(int argc, char **argv)
 698 {
 699     wav_io_context_t wav_io = { read_callback, seek_callback, tell_callback };
 700     m4af_io_callbacks_t m4af_io = {
 701         write_callback, seek_callback, tell_callback };
 702     aacenc_param_ex_t params = { 0 };
 703
 704     int result = 2;
 705     FILE *ifp = 0;
 706     FILE *ofp = 0;
 707     char *output_filename = 0;
 708     wav_reader_t *wavf = 0;
 709     HANDLE_AACENCODER encoder = 0;
 710     AACENC_InfoStruct aacinfo = { 0 };
 711     m4af_writer_t *m4af = 0;
 712     const pcm_sample_description_t *sample_format;
 713     int downsampled_timescale = 0;
 714     int frame_count = 0;
 715     struct stat stb = { 0 };
 716
 717     setlocale(LC_CTYPE, "");
 718     setbuf(stderr, 0);
 719
 720     if (parse_options(argc, argv, &params) < 0)
 721         return 1;
 722
 723     if ((ifp = aacenc_fopen(params.input_filename, "rb")) == 0) {
 724         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.input_filename,
 725                        strerror(errno));
 726         goto END;
 727     }
 728     if (fstat(fileno(ifp), &stb) == 0 && (stb.st_mode & S_IFMT) != S_IFREG) {
 729         wav_io.seek = 0;
 730         wav_io.tell = 0;
 731     }
 732     if (!params.is_raw) {
 733         if ((wavf = wav_open(&wav_io, ifp, params.ignore_length)) == 0) {
 734             fprintf(stderr, "ERROR: broken / unsupported input file\n");
 735             goto END;
 736         }
 737     } else {
 738         int bytes_per_channel;
 739         pcm_sample_description_t desc = { 0 };
 740         if (parse_raw_spec(params.raw_format, &desc) < 0) {
 741             fprintf(stderr, "ERROR: invalid raw-format spec\n");
 742             goto END;
 743         }
 744         desc.sample_rate = params.raw_rate;
 745         desc.channels_per_frame = params.raw_channels;
 746         bytes_per_channel = (desc.bits_per_channel + 7) / 8;
 747         desc.bytes_per_frame = params.raw_channels * bytes_per_channel;
 748         if ((wavf = raw_open(&wav_io, ifp, &desc)) == 0) {
 749             fprintf(stderr, "ERROR: failed to open raw input\n");
 750             goto END;
 751         }
 752     }
 753     sample_format = wav_get_format(wavf);
 754
 755     if (aacenc_init(&encoder, (aacenc_param_t*)&params, sample_format,
 756                     &aacinfo) < 0)
 757         goto END;
 758
 759     if (!params.output_filename) {
 760         const char *ext = params.transport_format ? ".aac" : ".m4a";
 761         output_filename = generate_output_filename(params.input_filename, ext);
 762         params.output_filename = output_filename;
 763     }
 764
 765     if ((ofp = aacenc_fopen(params.output_filename, "wb")) == 0) {
 766         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.output_filename,
 767                        strerror(errno));
 768         goto END;
 769     }
 770     if (!params.transport_format) {
 771         uint32_t scale;
 772         unsigned framelen = aacinfo.frameLength;
 773         int sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)&params);
 774         int sig_mode = aacEncoder_GetParam(encoder, AACENC_SIGNALING_MODE);
 775         if (sbr_mode && !sig_mode)
 776             downsampled_timescale = 1;
 777         scale = sample_format->sample_rate >> downsampled_timescale;
 778         if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io, ofp)) < 0)
 779             goto END;
 780         m4af_decoder_specific_info(m4af, 0, aacinfo.confBuf, aacinfo.confSize);
 781         m4af_set_fixed_frame_duration(m4af, 0,
 782                                       framelen >> downsampled_timescale);
 783         m4af_begin_write(m4af);
 784     }
 785     frame_count = encode(wavf, encoder, aacinfo.frameLength, ofp, m4af);
 786     if (frame_count < 0)
 787         goto END;
 788     if (m4af) {
 789         uint32_t delay = aacinfo.encoderDelay;
 790         int64_t frames_read = wav_get_position(wavf);
 791         uint32_t padding = frame_count * aacinfo.frameLength
 792                             - frames_read - aacinfo.encoderDelay;
 793         m4af_set_priming(m4af, 0, delay >> downsampled_timescale,
 794                          padding >> downsampled_timescale);
 795         if (finalize_m4a(m4af, &params, encoder) < 0)
 796             goto END;
 797     }
 798     result = 0;
 799 END:
 800     if (wavf) wav_teardown(&wavf);
 801     if (ifp) fclose(ifp);
 802     if (m4af) m4af_teardown(&m4af);
 803     if (ofp) fclose(ofp);
 804     if (encoder) aacEncClose(&encoder);
 805     if (output_filename) free(output_filename);
 806     if (params.tag_table) free(params.tag_table);
 807
 808     return result;
 809 }