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 " --ignore-length               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         { "ignore-length",    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     };
 237     params->afterburner = 1;
 238
 239     aacenc_getmainargs(&argc, &argv);
 240     while ((ch = getopt_long(argc, argv, "hp:b:m:w:a:Ls:f:CP:Io:R",
 241                              long_options, 0)) != EOF) {
 242         switch (ch) {
 243         case 'h':
 244             return usage(), -1;
 245         case 'p':
 246             if (sscanf(optarg, "%u", &n) != 1) {
 247                 fprintf(stderr, "invalid arg for profile\n");
 248                 return -1;
 249             }
 250             params->profile = n;
 251             break;
 252         case 'b':
 253             if (sscanf(optarg, "%u", &n) != 1) {
 254                 fprintf(stderr, "invalid arg for bitrate\n");
 255                 return -1;
 256             }
 257             params->bitrate = n;
 258             break;
 259         case 'm':
 260             if (sscanf(optarg, "%u", &n) != 1 || n > 5) {
 261                 fprintf(stderr, "invalid arg for bitrate-mode\n");
 262                 return -1;
 263             }
 264             params->bitrate_mode = n;
 265             break;
 266         case 'w':
 267             if (sscanf(optarg, "%u", &n) != 1) {
 268                 fprintf(stderr, "invalid arg for bandwidth\n");
 269                 return -1;
 270             }
 271             params->bandwidth = n;
 272             break;
 273         case 'a':
 274             if (sscanf(optarg, "%u", &n) != 1 || n > 1) {
 275                 fprintf(stderr, "invalid arg for afterburner\n");
 276                 return -1;
 277             }
 278             params->afterburner = n;
 279             break;
 280         case 'L':
 281             params->lowdelay_sbr = 1;
 282             break;
 283         case 's':
 284             if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
 285                 fprintf(stderr, "invalid arg for sbr-signaling\n");
 286                 return -1;
 287             }
 288             params->sbr_signaling = n;
 289             break;
 290         case 'f':
 291             if (sscanf(optarg, "%u", &n) != 1) {
 292                 fprintf(stderr, "invalid arg for transport-format\n");
 293                 return -1;
 294             }
 295             params->transport_format = n;
 296             break;
 297         case 'c':
 298             params->adts_crc_check = 1;
 299             break;
 300         case 'P':
 301             if (sscanf(optarg, "%u", &n) != 1) {
 302                 fprintf(stderr, "invalid arg for header-period\n");
 303                 return -1;
 304             }
 305             params->header_period = n;
 306             break;
 307         case 'o':
 308             params->output_filename = optarg;
 309             break;
 310         case 'I':
 311             params->ignore_length = 1;
 312             break;
 313         case 'R':
 314             params->is_raw = 1;
 315             break;
 316         case OPT_RAW_CHANNELS:
 317             if (sscanf(optarg, "%u", &n) != 1) {
 318                 fprintf(stderr, "invalid arg for raw-channels\n");
 319                 return -1;
 320             }
 321             params->raw_channels = n;
 322             break;
 323         case OPT_RAW_RATE:
 324             if (sscanf(optarg, "%u", &n) != 1) {
 325                 fprintf(stderr, "invalid arg for raw-rate\n");
 326                 return -1;
 327             }
 328             params->raw_rate = n;
 329             break;
 330         case OPT_RAW_FORMAT:
 331             params->raw_format = optarg;
 332             break;
 333         case M4AF_TAG_TITLE:
 334         case M4AF_TAG_ARTIST:
 335         case M4AF_TAG_ALBUM:
 336         case M4AF_TAG_GENRE:
 337         case M4AF_TAG_DATE:
 338         case M4AF_TAG_COMPOSER:
 339         case M4AF_TAG_GROUPING:
 340         case M4AF_TAG_COMMENT:
 341         case M4AF_TAG_ALBUM_ARTIST:
 342         case M4AF_TAG_TRACK:
 343         case M4AF_TAG_DISK:
 344         case M4AF_TAG_TEMPO:
 345             param_add_itmf_entry(params, ch, 0, optarg, strlen(optarg));
 346             break;
 347         case OPT_SHORT_TAG:
 348         case OPT_LONG_TAG:
 349             {
 350                 char *val;
 351                 size_t klen;
 352                 unsigned fcc = M4AF_FOURCC('-','-','-','-');
 353
 354                 if ((val = strchr(optarg, ':')) == 0) {
 355                     fprintf(stderr, "invalid arg for tag\n");
 356                     return -1;
 357                 }
 358                 *val++ = '\0';
 359                 if (ch == OPT_SHORT_TAG) {
 360                     /*
 361                      * take care of U+00A9(COPYRIGHT SIGN).
 362                      * 1) if length of fcc is 3, we prepend '\xa9'.
 363                      * 2) U+00A9 becomes "\xc2\xa9" in UTF-8. Therefore
 364                      *    we remove first '\xc2'.
 365                      */
 366                     if (optarg[0] == '\xc2')
 367                         ++optarg;
 368                     if ((klen = strlen(optarg))== 3)
 369                         fcc = 0xa9;
 370                     else if (klen != 4) {
 371                         fprintf(stderr, "invalid arg for tag\n");
 372                         return -1;
 373                     }
 374                     for (; *optarg; ++optarg)
 375                         fcc = ((fcc << 8) | (*optarg & 0xff));
 376                 }
 377                 param_add_itmf_entry(params, fcc, optarg, val, strlen(val));
 378             }
 379             break;
 380         default:
 381             return usage(), -1;
 382         }
 383     }
 384     if (argc == optind)
 385         return usage(), -1;
 386
 387     if (!params->bitrate && !params->bitrate_mode) {
 388         fprintf(stderr, "bitrate or bitrate-mode is mandatory\n");
 389         return -1;
 390     }
 391     if (params->output_filename && !strcmp(params->output_filename, "-") &&
 392         !params->transport_format) {
 393         fprintf(stderr, "stdout streaming is not available on M4A output\n");
 394         return -1;
 395     }
 396     if (params->bitrate && params->bitrate < 10000)
 397         params->bitrate *= 1000;
 398
 399     if (params->is_raw) {
 400         if (!params->raw_channels)
 401             params->raw_channels = 2;
 402         if (!params->raw_rate)
 403             params->raw_rate = 44100;
 404         if (!params->raw_format)
 405             params->raw_format = "S16L";
 406     }
 407     params->input_filename = argv[optind];
 408     return 0;
 409 };
 410
 411 static
 412 int write_sample(FILE *ofp, m4af_writer_t *m4af,
 413                  const void *data, uint32_t size, uint32_t duration)
 414 {
 415     if (!m4af) {
 416         fwrite(data, 1, size, ofp);
 417         if (ferror(ofp)) {
 418             fprintf(stderr, "ERROR: fwrite(): %s\n", strerror(errno));
 419             return -1;
 420         }
 421     } else if (m4af_write_sample(m4af, 0, data, size, duration) < 0) {
 422         fprintf(stderr, "ERROR: failed to write m4a sample\n");
 423         return -1;
 424     }
 425     return 0;
 426 }
 427
 428 static
 429 int encode(wav_reader_t *wavf, HANDLE_AACENCODER encoder,
 430            uint32_t frame_length, FILE *ofp, m4af_writer_t *m4af)
 431 {
 432     uint8_t *ibuf = 0;
 433     int16_t *pcmbuf = 0;
 434     uint32_t pcmsize = 0;
 435     uint8_t *obuf = 0;
 436     uint32_t olen;
 437     uint32_t osize = 0;
 438     int nread = 1;
 439     int consumed;
 440     int rc = -1;
 441     int frames_written = 0;
 442     aacenc_progress_t progress = { 0 };
 443     const pcm_sample_description_t *format = wav_get_format(wavf);
 444
 445     ibuf = malloc(frame_length * format->bytes_per_frame);
 446     aacenc_progress_init(&progress, wav_get_length(wavf), format->sample_rate);
 447     do {
 448         if (nread) {
 449             if ((nread = wav_read_frames(wavf, ibuf, frame_length)) < 0) {
 450                 fprintf(stderr, "ERROR: read failed\n");
 451                 goto END;
 452             } else if (nread > 0) {
 453                 if (pcm_convert_to_native_sint16(format, ibuf, nread,
 454                                                  &pcmbuf, &pcmsize) < 0) {
 455                     fprintf(stderr, "ERROR: unsupported sample format\n");
 456                     goto END;
 457                 }
 458             }
 459             aacenc_progress_update(&progress, wav_get_position(wavf),
 460                                    format->sample_rate * 2);
 461         }
 462         if ((consumed = aac_encode_frame(encoder, format, pcmbuf, nread,
 463                                          &obuf, &olen, &osize)) < 0)
 464             goto END;
 465         if (olen > 0) {
 466             if (write_sample(ofp, m4af, obuf, olen, frame_length) < 0)
 467                 goto END;
 468             ++frames_written;
 469         }
 470     } while (nread > 0 || olen > 0);
 471     aacenc_progress_finish(&progress, wav_get_position(wavf));
 472     rc = frames_written;
 473 END:
 474     if (ibuf) free(ibuf);
 475     if (pcmbuf) free(pcmbuf);
 476     if (obuf) free(obuf);
 477     return rc;
 478 }
 479
 480 static
 481 void put_tag_entry(m4af_writer_t *m4af, const aacenc_tag_entry_t *tag)
 482 {
 483     unsigned m, n = 0;
 484
 485     switch (tag->tag) {
 486     case M4AF_TAG_TRACK:
 487         if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
 488             m4af_add_itmf_track_tag(m4af, m, n);
 489         break;
 490     case M4AF_TAG_DISK:
 491         if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
 492             m4af_add_itmf_disk_tag(m4af, m, n);
 493         break;
 494     case M4AF_TAG_GENRE_ID3:
 495         if (sscanf(tag->data, "%u", &n) == 1)
 496             m4af_add_itmf_genre_tag(m4af, n);
 497         break;
 498     case M4AF_TAG_TEMPO:
 499         if (sscanf(tag->data, "%u", &n) == 1)
 500             m4af_add_itmf_int16_tag(m4af, tag->tag, n);
 501         break;
 502     case M4AF_TAG_COMPILATION:
 503     case M4AF_FOURCC('a','k','I','D'):
 504     case M4AF_FOURCC('h','d','v','d'):
 505     case M4AF_FOURCC('p','c','s','t'):
 506     case M4AF_FOURCC('p','g','a','p'):
 507     case M4AF_FOURCC('r','t','n','g'):
 508     case M4AF_FOURCC('s','t','i','k'):
 509         if (sscanf(tag->data, "%u", &n) == 1)
 510             m4af_add_itmf_int8_tag(m4af, tag->tag, n);
 511         break;
 512     case M4AF_FOURCC('a','t','I','D'):
 513     case M4AF_FOURCC('c','m','I','D'):
 514     case M4AF_FOURCC('c','n','I','D'):
 515     case M4AF_FOURCC('g','e','I','D'):
 516     case M4AF_FOURCC('s','f','I','D'):
 517     case M4AF_FOURCC('t','v','s','n'):
 518     case M4AF_FOURCC('t','v','s','s'):
 519         if (sscanf(tag->data, "%u", &n) == 1)
 520             m4af_add_itmf_int32_tag(m4af, tag->tag, n);
 521         break;
 522     case M4AF_FOURCC('p','l','I','D'):
 523         {
 524             int64_t qn;
 525             if (sscanf(tag->data, "%" SCNd64, &qn) == 1)
 526                 m4af_add_itmf_int64_tag(m4af, tag->tag, qn);
 527             break;
 528         }
 529     case M4AF_TAG_ARTWORK:
 530         {
 531             int data_type = 0;
 532             if (!memcmp(tag->data, "GIF", 3))
 533                 data_type = M4AF_GIF;
 534             else if (!memcmp(tag->data, "\xff\xd8\xff", 3))
 535                 data_type = M4AF_JPEG;
 536             else if (!memcmp(tag->data, "\x89PNG", 4))
 537                 data_type = M4AF_PNG;
 538             if (data_type)
 539                 m4af_add_itmf_short_tag(m4af, tag->tag, data_type,
 540                                         tag->data, tag->data_size);
 541             break;
 542         }
 543     case M4AF_FOURCC('-','-','-','-'):
 544         {
 545             char *u8 = aacenc_to_utf8(tag->data);
 546             m4af_add_itmf_long_tag(m4af, tag->name, u8);
 547             free(u8);
 548             break;
 549         }
 550     case M4AF_TAG_TITLE:
 551     case M4AF_TAG_ARTIST:
 552     case M4AF_TAG_ALBUM:
 553     case M4AF_TAG_GENRE:
 554     case M4AF_TAG_DATE:
 555     case M4AF_TAG_COMPOSER:
 556     case M4AF_TAG_GROUPING:
 557     case M4AF_TAG_COMMENT:
 558     case M4AF_TAG_LYRICS:
 559     case M4AF_TAG_TOOL:
 560     case M4AF_TAG_ALBUM_ARTIST:
 561     case M4AF_TAG_DESCRIPTION:
 562     case M4AF_TAG_LONG_DESCRIPTION:
 563     case M4AF_TAG_COPYRIGHT:
 564     case M4AF_FOURCC('a','p','I','D'):
 565     case M4AF_FOURCC('c','a','t','g'):
 566     case M4AF_FOURCC('k','e','y','w'):
 567     case M4AF_FOURCC('p','u','r','d'):
 568     case M4AF_FOURCC('p','u','r','l'):
 569     case M4AF_FOURCC('s','o','a','a'):
 570     case M4AF_FOURCC('s','o','a','l'):
 571     case M4AF_FOURCC('s','o','a','r'):
 572     case M4AF_FOURCC('s','o','c','o'):
 573     case M4AF_FOURCC('s','o','n','m'):
 574     case M4AF_FOURCC('s','o','s','n'):
 575     case M4AF_FOURCC('t','v','e','n'):
 576     case M4AF_FOURCC('t','v','n','n'):
 577     case M4AF_FOURCC('t','v','s','h'):
 578     case M4AF_FOURCC('x','i','d',' '):
 579     case M4AF_FOURCC('\xa9','e','n','c'):
 580     case M4AF_FOURCC('\xa9','s','t','3'):
 581         {
 582             char *u8 = aacenc_to_utf8(tag->data);
 583             m4af_add_itmf_string_tag(m4af, tag->tag, u8);
 584             free(u8);
 585             break;
 586         }
 587     default:
 588         fprintf(stderr, "WARNING: unknown/unsupported tag: %c%c%c%c\n",
 589                 tag->tag >> 24, (tag->tag >> 16) & 0xff,
 590                 (tag->tag >> 8) & 0xff, tag->tag & 0xff);
 591     }
 592 }
 593
 594 static
 595 void put_tool_tag(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
 596                   HANDLE_AACENCODER encoder)
 597 {
 598     char tool_info[256];
 599     char *p = tool_info;
 600     LIB_INFO *lib_info = 0;
 601
 602     p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
 603
 604     lib_info = calloc(FDK_MODULE_LAST, sizeof(LIB_INFO));
 605     if (aacEncGetLibInfo(lib_info) == AACENC_OK) {
 606         int i;
 607         for (i = 0; i < FDK_MODULE_LAST; ++i)
 608             if (lib_info[i].module_id == FDK_AACENC)
 609                 break;
 610         p += sprintf(p, "libfdk-aac %s, ", lib_info[i].versionStr);
 611     }
 612     free(lib_info);
 613     if (params->bitrate_mode)
 614         sprintf(p, "VBR mode %d", params->bitrate_mode);
 615     else
 616         sprintf(p, "CBR %dkbps",
 617                 aacEncoder_GetParam(encoder, AACENC_BITRATE) / 1000);
 618
 619     m4af_add_itmf_string_tag(m4af, M4AF_TAG_TOOL, tool_info);
 620 }
 621
 622 static
 623 int finalize_m4a(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
 624                  HANDLE_AACENCODER encoder)
 625 {
 626     unsigned i;
 627     aacenc_tag_entry_t *tag = params->tag_table;
 628     for (i = 0; i < params->tag_count; ++i, ++tag)
 629         put_tag_entry(m4af, tag);
 630
 631     put_tool_tag(m4af, params, encoder);
 632
 633     if (m4af_finalize(m4af) < 0) {
 634         fprintf(stderr, "ERROR: failed to finalize m4a\n");
 635         return -1;
 636     }
 637     return 0;
 638 }
 639
 640 static
 641 char *generate_output_filename(const char *filename, const char *ext)
 642 {
 643     char *p = 0;
 644     size_t ext_len = strlen(ext);
 645
 646     if (strcmp(filename, "-") == 0) {
 647         p = malloc(ext_len + 6);
 648         sprintf(p, "stdin%s", ext);
 649     } else {
 650         const char *base = aacenc_basename(filename);
 651         size_t ilen = strlen(base);
 652         const char *ext_org = strrchr(base, '.');
 653         if (ext_org) ilen = ext_org - base;
 654         p = malloc(ilen + ext_len + 1);
 655         sprintf(p, "%.*s%s", ilen, base, ext);
 656     }
 657     return p;
 658 }
 659
 660 static
 661 int parse_raw_spec(const char *spec, pcm_sample_description_t *desc)
 662 {
 663     unsigned bits;
 664     unsigned char c_type, c_endian = 'L';
 665     int type;
 666
 667     if (sscanf(spec, "%c%u%c", &c_type, &bits, &c_endian) < 2)
 668         return -1;
 669     c_type = toupper(c_type);
 670     c_endian = toupper(c_endian);
 671
 672     if (c_type == 'S')
 673         type = 1;
 674     else if (c_type == 'U')
 675         type = 2;
 676     else if (c_type == 'F')
 677         type = 4;
 678     else
 679         return -1;
 680
 681     if (c_endian == 'B')
 682         type |= 8;
 683     else if (c_endian != 'L')
 684         return -1;
 685
 686     if (c_type == 'F' && bits != 32 && bits != 64)
 687         return -1;
 688     if (c_type != 'F' && (bits < 8 || bits > 32))
 689         return -1;
 690
 691     desc->sample_type = type;
 692     desc->bits_per_channel = bits;
 693     return 0;
 694 }
 695
 696 int main(int argc, char **argv)
 697 {
 698     wav_io_context_t wav_io = { read_callback, seek_callback, tell_callback };
 699     m4af_io_callbacks_t m4af_io = {
 700         write_callback, seek_callback, tell_callback };
 701     aacenc_param_ex_t params = { 0 };
 702
 703     int result = 2;
 704     FILE *ifp = 0;
 705     FILE *ofp = 0;
 706     char *output_filename = 0;
 707     wav_reader_t *wavf = 0;
 708     HANDLE_AACENCODER encoder = 0;
 709     AACENC_InfoStruct aacinfo = { 0 };
 710     m4af_writer_t *m4af = 0;
 711     const pcm_sample_description_t *sample_format;
 712     int downsampled_timescale = 0;
 713     int frame_count = 0;
 714     struct stat stb = { 0 };
 715
 716     setlocale(LC_CTYPE, "");
 717     setbuf(stderr, 0);
 718
 719     if (parse_options(argc, argv, &params) < 0)
 720         return 1;
 721
 722     if ((ifp = aacenc_fopen(params.input_filename, "rb")) == 0) {
 723         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.input_filename,
 724                        strerror(errno));
 725         goto END;
 726     }
 727     if (fstat(fileno(ifp), &stb) == 0 && (stb.st_mode & S_IFMT) != S_IFREG) {
 728         wav_io.seek = 0;
 729         wav_io.tell = 0;
 730     }
 731     if (!params.is_raw) {
 732         if ((wavf = wav_open(&wav_io, ifp, params.ignore_length)) == 0) {
 733             fprintf(stderr, "ERROR: broken / unsupported input file\n");
 734             goto END;
 735         }
 736     } else {
 737         int bytes_per_channel;
 738         pcm_sample_description_t desc = { 0 };
 739         if (parse_raw_spec(params.raw_format, &desc) < 0) {
 740             fprintf(stderr, "ERROR: invalid raw-format spec\n");
 741             goto END;
 742         }
 743         desc.sample_rate = params.raw_rate;
 744         desc.channels_per_frame = params.raw_channels;
 745         bytes_per_channel = (desc.bits_per_channel + 7) / 8;
 746         desc.bytes_per_frame = params.raw_channels * bytes_per_channel;
 747         if ((wavf = raw_open(&wav_io, ifp, &desc)) == 0) {
 748             fprintf(stderr, "ERROR: failed to open raw input\n");
 749             goto END;
 750         }
 751     }
 752     sample_format = wav_get_format(wavf);
 753
 754     if (aacenc_init(&encoder, (aacenc_param_t*)&params, sample_format,
 755                     &aacinfo) < 0)
 756         goto END;
 757
 758     if (!params.output_filename) {
 759         const char *ext = params.transport_format ? ".aac" : ".m4a";
 760         output_filename = generate_output_filename(params.input_filename, ext);
 761         params.output_filename = output_filename;
 762     }
 763
 764     if ((ofp = aacenc_fopen(params.output_filename, "wb")) == 0) {
 765         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.output_filename,
 766                        strerror(errno));
 767         goto END;
 768     }
 769     if (!params.transport_format) {
 770         uint32_t scale;
 771         unsigned framelen = aacinfo.frameLength;
 772         int sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)&params);
 773         int sig_mode = aacEncoder_GetParam(encoder, AACENC_SIGNALING_MODE);
 774         if (sbr_mode && !sig_mode)
 775             downsampled_timescale = 1;
 776         scale = sample_format->sample_rate >> downsampled_timescale;
 777         if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io, ofp)) < 0)
 778             goto END;
 779         m4af_decoder_specific_info(m4af, 0, aacinfo.confBuf, aacinfo.confSize);
 780         m4af_set_fixed_frame_duration(m4af, 0,
 781                                       framelen >> downsampled_timescale);
 782         m4af_begin_write(m4af);
 783     }
 784     frame_count = encode(wavf, encoder, aacinfo.frameLength, ofp, m4af);
 785     if (frame_count < 0)
 786         goto END;
 787     if (m4af) {
 788         uint32_t delay = aacinfo.encoderDelay;
 789         int64_t frames_read = wav_get_position(wavf);
 790         uint32_t padding = frame_count * aacinfo.frameLength
 791                             - frames_read - aacinfo.encoderDelay;
 792         m4af_set_priming(m4af, 0, delay >> downsampled_timescale,
 793                          padding >> downsampled_timescale);
 794         if (finalize_m4a(m4af, &params, encoder) < 0)
 795             goto END;
 796     }
 797     result = 0;
 798 END:
 799     if (wavf) wav_teardown(&wavf);
 800     if (ifp) fclose(ifp);
 801     if (m4af) m4af_teardown(&m4af);
 802     if (ofp) fclose(ofp);
 803     if (encoder) aacEncClose(&encoder);
 804     if (output_filename) free(output_filename);
 805     if (params.tag_table) free(params.tag_table);
 806
 807     return result;
 808 }