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