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 " -S, --silent                  Don't print progress messages\n"
 113 "\n"
 114 "Options for raw (headerless) input:\n"
 115 " -R, --raw                     Treat input as raw (by default WAV is\n"
 116 "                               assumed)\n"
 117 " --raw-channels <n>            Number of channels (default: 2)\n"
 118 " --raw-rate     <n>            Sample rate (default: 44100)\n"
 119 " --raw-format   <spec>         Sample format, default is \"S16L\".\n"
 120 "                               Spec is as follows:\n"
 121 "                                1st char: S(igned)|U(nsigned)|F(loat)\n"
 122 "                                2nd part: bits per channel\n"
 123 "                                Last char: L(ittle)|B(ig)\n"
 124 "                               Last char can be omitted, in which case L is\n"
 125 "                               assumed. Spec is case insensitive, therefore\n"
 126 "                               \"u16b\" is same as \"U16B\".\n"
 127 "\n"
 128 "Tagging options:\n"
 129 " --title <string>\n"
 130 " --artist <string>\n"
 131 " --album <string>\n"
 132 " --genre <string>\n"
 133 " --date <string>\n"
 134 " --composer <string>\n"
 135 " --grouping <string>\n"
 136 " --comment <string>\n"
 137 " --album-artist <string>\n"
 138 " --track <number[/total]>\n"
 139 " --disk <number[/total]>\n"
 140 " --tempo <n>\n"
 141 " --tag <fcc>:<value>          Set iTunes predefined tag with four char code.\n"
 142 " --long-tag <name>:<value>    Set arbitrary tag as iTunes custom metadata.\n"
 143     , fdkaac_version);
 144 }
 145
 146 typedef struct aacenc_tag_entry_t {
 147     uint32_t tag;
 148     const char *name;
 149     const char *data;
 150     uint32_t data_size;
 151 } aacenc_tag_entry_t;
 152
 153 typedef struct aacenc_param_ex_t {
 154     AACENC_PARAMS
 155
 156     char *input_filename;
 157     char *output_filename;
 158     unsigned ignore_length;
 159     int silent;
 160
 161     int is_raw;
 162     unsigned raw_channels;
 163     unsigned raw_rate;
 164     const char *raw_format;
 165
 166     aacenc_tag_entry_t *tag_table;
 167     unsigned tag_count;
 168     unsigned tag_table_capacity;
 169 } aacenc_param_ex_t;
 170
 171 static
 172 void param_add_itmf_entry(aacenc_param_ex_t *params, uint32_t tag,
 173                          const char *key, const char *value, uint32_t size)
 174 {
 175     aacenc_tag_entry_t *entry;
 176     if (params->tag_count == params->tag_table_capacity) {
 177         unsigned newsize = params->tag_table_capacity;
 178         newsize = newsize ? newsize * 2 : 1;
 179         params->tag_table =
 180             realloc(params->tag_table, newsize * sizeof(aacenc_tag_entry_t));
 181         params->tag_table_capacity = newsize;
 182     }
 183     entry = params->tag_table + params->tag_count;
 184     entry->tag = tag;
 185     if (tag == M4AF_FOURCC('-','-','-','-'))
 186         entry->name = key;
 187     entry->data = value;
 188     entry->data_size = size;
 189     params->tag_count++;
 190 }
 191
 192 static
 193 int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
 194 {
 195     int ch;
 196     unsigned n;
 197
 198 #define OPT_RAW_CHANNELS M4AF_FOURCC('r','c','h','n')
 199 #define OPT_RAW_RATE     M4AF_FOURCC('r','r','a','t')
 200 #define OPT_RAW_FORMAT   M4AF_FOURCC('r','f','m','t')
 201 #define OPT_SHORT_TAG    M4AF_FOURCC('s','t','a','g')
 202 #define OPT_LONG_TAG     M4AF_FOURCC('l','t','a','g')
 203
 204     static struct option long_options[] = {
 205         { "help",             no_argument,       0, 'h' },
 206         { "profile",          required_argument, 0, 'p' },
 207         { "bitrate",          required_argument, 0, 'b' },
 208         { "bitrate-mode",     required_argument, 0, 'm' },
 209         { "bandwidth",        required_argument, 0, 'w' },
 210         { "afterburner",      required_argument, 0, 'a' },
 211         { "lowdelay-sbr",     no_argument,       0, 'L' },
 212         { "sbr-signaling",    required_argument, 0, 's' },
 213         { "transport-format", required_argument, 0, 'f' },
 214         { "adts-crc-check",   no_argument,       0, 'C' },
 215         { "header-period",    required_argument, 0, 'P' },
 216
 217         { "ignorelength",     no_argument,       0, 'I' },
 218         { "silent",           no_argument,       0, 'S' },
 219
 220         { "raw",              no_argument,       0, 'R' },
 221         { "raw-channels",     required_argument, 0, OPT_RAW_CHANNELS       },
 222         { "raw-rate",         required_argument, 0, OPT_RAW_RATE           },
 223         { "raw-format",       required_argument, 0, OPT_RAW_FORMAT         },
 224
 225         { "title",            required_argument, 0, M4AF_TAG_TITLE         },
 226         { "artist",           required_argument, 0, M4AF_TAG_ARTIST        },
 227         { "album",            required_argument, 0, M4AF_TAG_ALBUM         },
 228         { "genre",            required_argument, 0, M4AF_TAG_GENRE         },
 229         { "date",             required_argument, 0, M4AF_TAG_DATE          },
 230         { "composer",         required_argument, 0, M4AF_TAG_COMPOSER      },
 231         { "grouping",         required_argument, 0, M4AF_TAG_GROUPING      },
 232         { "comment",          required_argument, 0, M4AF_TAG_COMMENT       },
 233         { "album-artist",     required_argument, 0, M4AF_TAG_ALBUM_ARTIST  },
 234         { "track",            required_argument, 0, M4AF_TAG_TRACK         },
 235         { "disk",             required_argument, 0, M4AF_TAG_DISK          },
 236         { "tempo",            required_argument, 0, M4AF_TAG_TEMPO         },
 237         { "tag",              required_argument, 0, OPT_SHORT_TAG          },
 238         { "long-tag",         required_argument, 0, OPT_LONG_TAG           },
 239         { 0,                  0,                 0, 0                      },
 240     };
 241     params->afterburner = 1;
 242
 243     aacenc_getmainargs(&argc, &argv);
 244     while ((ch = getopt_long(argc, argv, "hp:b:m:w:a:Ls:f:CP:Io:SR",
 245                              long_options, 0)) != EOF) {
 246         switch (ch) {
 247         case 'h':
 248             return usage(), -1;
 249         case 'p':
 250             if (sscanf(optarg, "%u", &n) != 1) {
 251                 fprintf(stderr, "invalid arg for profile\n");
 252                 return -1;
 253             }
 254             params->profile = n;
 255             break;
 256         case 'b':
 257             if (sscanf(optarg, "%u", &n) != 1) {
 258                 fprintf(stderr, "invalid arg for bitrate\n");
 259                 return -1;
 260             }
 261             params->bitrate = n;
 262             break;
 263         case 'm':
 264             if (sscanf(optarg, "%u", &n) != 1 || n > 5) {
 265                 fprintf(stderr, "invalid arg for bitrate-mode\n");
 266                 return -1;
 267             }
 268             params->bitrate_mode = n;
 269             break;
 270         case 'w':
 271             if (sscanf(optarg, "%u", &n) != 1) {
 272                 fprintf(stderr, "invalid arg for bandwidth\n");
 273                 return -1;
 274             }
 275             params->bandwidth = n;
 276             break;
 277         case 'a':
 278             if (sscanf(optarg, "%u", &n) != 1 || n > 1) {
 279                 fprintf(stderr, "invalid arg for afterburner\n");
 280                 return -1;
 281             }
 282             params->afterburner = n;
 283             break;
 284         case 'L':
 285             params->lowdelay_sbr = 1;
 286             break;
 287         case 's':
 288             if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
 289                 fprintf(stderr, "invalid arg for sbr-signaling\n");
 290                 return -1;
 291             }
 292             params->sbr_signaling = n;
 293             break;
 294         case 'f':
 295             if (sscanf(optarg, "%u", &n) != 1) {
 296                 fprintf(stderr, "invalid arg for transport-format\n");
 297                 return -1;
 298             }
 299             params->transport_format = n;
 300             break;
 301         case 'c':
 302             params->adts_crc_check = 1;
 303             break;
 304         case 'P':
 305             if (sscanf(optarg, "%u", &n) != 1) {
 306                 fprintf(stderr, "invalid arg for header-period\n");
 307                 return -1;
 308             }
 309             params->header_period = n;
 310             break;
 311         case 'o':
 312             params->output_filename = optarg;
 313             break;
 314         case 'I':
 315             params->ignore_length = 1;
 316             break;
 317         case 'S':
 318             params->silent = 1;
 319             break;
 320         case 'R':
 321             params->is_raw = 1;
 322             break;
 323         case OPT_RAW_CHANNELS:
 324             if (sscanf(optarg, "%u", &n) != 1) {
 325                 fprintf(stderr, "invalid arg for raw-channels\n");
 326                 return -1;
 327             }
 328             params->raw_channels = n;
 329             break;
 330         case OPT_RAW_RATE:
 331             if (sscanf(optarg, "%u", &n) != 1) {
 332                 fprintf(stderr, "invalid arg for raw-rate\n");
 333                 return -1;
 334             }
 335             params->raw_rate = n;
 336             break;
 337         case OPT_RAW_FORMAT:
 338             params->raw_format = optarg;
 339             break;
 340         case M4AF_TAG_TITLE:
 341         case M4AF_TAG_ARTIST:
 342         case M4AF_TAG_ALBUM:
 343         case M4AF_TAG_GENRE:
 344         case M4AF_TAG_DATE:
 345         case M4AF_TAG_COMPOSER:
 346         case M4AF_TAG_GROUPING:
 347         case M4AF_TAG_COMMENT:
 348         case M4AF_TAG_ALBUM_ARTIST:
 349         case M4AF_TAG_TRACK:
 350         case M4AF_TAG_DISK:
 351         case M4AF_TAG_TEMPO:
 352             param_add_itmf_entry(params, ch, 0, optarg, strlen(optarg));
 353             break;
 354         case OPT_SHORT_TAG:
 355         case OPT_LONG_TAG:
 356             {
 357                 char *val;
 358                 size_t klen;
 359                 unsigned fcc = M4AF_FOURCC('-','-','-','-');
 360
 361                 if ((val = strchr(optarg, ':')) == 0) {
 362                     fprintf(stderr, "invalid arg for tag\n");
 363                     return -1;
 364                 }
 365                 *val++ = '\0';
 366                 if (ch == OPT_SHORT_TAG) {
 367                     /*
 368                      * take care of U+00A9(COPYRIGHT SIGN).
 369                      * 1) if length of fcc is 3, we prepend '\xa9'.
 370                      * 2) U+00A9 becomes "\xc2\xa9" in UTF-8. Therefore
 371                      *    we remove first '\xc2'.
 372                      */
 373                     if (optarg[0] == '\xc2')
 374                         ++optarg;
 375                     if ((klen = strlen(optarg))== 3)
 376                         fcc = 0xa9;
 377                     else if (klen != 4) {
 378                         fprintf(stderr, "invalid arg for tag\n");
 379                         return -1;
 380                     }
 381                     for (; *optarg; ++optarg)
 382                         fcc = ((fcc << 8) | (*optarg & 0xff));
 383                 }
 384                 param_add_itmf_entry(params, fcc, optarg, val, strlen(val));
 385             }
 386             break;
 387         default:
 388             return usage(), -1;
 389         }
 390     }
 391     if (argc == optind)
 392         return usage(), -1;
 393
 394     if (!params->bitrate && !params->bitrate_mode) {
 395         fprintf(stderr, "bitrate or bitrate-mode is mandatory\n");
 396         return -1;
 397     }
 398     if (params->output_filename && !strcmp(params->output_filename, "-") &&
 399         !params->transport_format) {
 400         fprintf(stderr, "stdout streaming is not available on M4A output\n");
 401         return -1;
 402     }
 403     if (params->bitrate && params->bitrate < 10000)
 404         params->bitrate *= 1000;
 405
 406     if (params->is_raw) {
 407         if (!params->raw_channels)
 408             params->raw_channels = 2;
 409         if (!params->raw_rate)
 410             params->raw_rate = 44100;
 411         if (!params->raw_format)
 412             params->raw_format = "S16L";
 413     }
 414     params->input_filename = argv[optind];
 415     return 0;
 416 };
 417
 418 static
 419 int write_sample(FILE *ofp, m4af_writer_t *m4af,
 420                  const void *data, uint32_t size, uint32_t duration)
 421 {
 422     if (!m4af) {
 423         fwrite(data, 1, size, ofp);
 424         if (ferror(ofp)) {
 425             fprintf(stderr, "ERROR: fwrite(): %s\n", strerror(errno));
 426             return -1;
 427         }
 428     } else if (m4af_write_sample(m4af, 0, data, size, duration) < 0) {
 429         fprintf(stderr, "ERROR: failed to write m4a sample\n");
 430         return -1;
 431     }
 432     return 0;
 433 }
 434
 435 static
 436 int encode(wav_reader_t *wavf, HANDLE_AACENCODER encoder,
 437            uint32_t frame_length, FILE *ofp, m4af_writer_t *m4af,
 438            int show_progress)
 439 {
 440     uint8_t *ibuf = 0;
 441     int16_t *pcmbuf = 0;
 442     uint32_t pcmsize = 0;
 443     uint8_t *obuf = 0;
 444     uint32_t olen;
 445     uint32_t osize = 0;
 446     int nread = 1;
 447     int consumed;
 448     int rc = -1;
 449     int frames_written = 0;
 450     aacenc_progress_t progress = { 0 };
 451     const pcm_sample_description_t *format = wav_get_format(wavf);
 452
 453     ibuf = malloc(frame_length * format->bytes_per_frame);
 454     aacenc_progress_init(&progress, wav_get_length(wavf), format->sample_rate);
 455     do {
 456         if (nread) {
 457             if ((nread = wav_read_frames(wavf, ibuf, frame_length)) < 0) {
 458                 fprintf(stderr, "ERROR: read failed\n");
 459                 goto END;
 460             } else if (nread > 0) {
 461                 if (pcm_convert_to_native_sint16(format, ibuf, nread,
 462                                                  &pcmbuf, &pcmsize) < 0) {
 463                     fprintf(stderr, "ERROR: unsupported sample format\n");
 464                     goto END;
 465                 }
 466             }
 467             if (show_progress)
 468                 aacenc_progress_update(&progress, wav_get_position(wavf),
 469                                        format->sample_rate * 2);
 470         }
 471         if ((consumed = aac_encode_frame(encoder, format, pcmbuf, nread,
 472                                          &obuf, &olen, &osize)) < 0)
 473             goto END;
 474         if (olen > 0) {
 475             if (write_sample(ofp, m4af, obuf, olen, frame_length) < 0)
 476                 goto END;
 477             ++frames_written;
 478         }
 479     } while (nread > 0 || olen > 0);
 480
 481     if (show_progress)
 482         aacenc_progress_finish(&progress, wav_get_position(wavf));
 483     rc = frames_written;
 484 END:
 485     if (ibuf) free(ibuf);
 486     if (pcmbuf) free(pcmbuf);
 487     if (obuf) free(obuf);
 488     return rc;
 489 }
 490
 491 static
 492 void put_tag_entry(m4af_writer_t *m4af, const aacenc_tag_entry_t *tag)
 493 {
 494     unsigned m, n = 0;
 495
 496     switch (tag->tag) {
 497     case M4AF_TAG_TRACK:
 498         if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
 499             m4af_add_itmf_track_tag(m4af, m, n);
 500         break;
 501     case M4AF_TAG_DISK:
 502         if (sscanf(tag->data, "%u/%u", &m, &n) >= 1)
 503             m4af_add_itmf_disk_tag(m4af, m, n);
 504         break;
 505     case M4AF_TAG_GENRE_ID3:
 506         if (sscanf(tag->data, "%u", &n) == 1)
 507             m4af_add_itmf_genre_tag(m4af, n);
 508         break;
 509     case M4AF_TAG_TEMPO:
 510         if (sscanf(tag->data, "%u", &n) == 1)
 511             m4af_add_itmf_int16_tag(m4af, tag->tag, n);
 512         break;
 513     case M4AF_TAG_COMPILATION:
 514     case M4AF_FOURCC('a','k','I','D'):
 515     case M4AF_FOURCC('h','d','v','d'):
 516     case M4AF_FOURCC('p','c','s','t'):
 517     case M4AF_FOURCC('p','g','a','p'):
 518     case M4AF_FOURCC('r','t','n','g'):
 519     case M4AF_FOURCC('s','t','i','k'):
 520         if (sscanf(tag->data, "%u", &n) == 1)
 521             m4af_add_itmf_int8_tag(m4af, tag->tag, n);
 522         break;
 523     case M4AF_FOURCC('a','t','I','D'):
 524     case M4AF_FOURCC('c','m','I','D'):
 525     case M4AF_FOURCC('c','n','I','D'):
 526     case M4AF_FOURCC('g','e','I','D'):
 527     case M4AF_FOURCC('s','f','I','D'):
 528     case M4AF_FOURCC('t','v','s','n'):
 529     case M4AF_FOURCC('t','v','s','s'):
 530         if (sscanf(tag->data, "%u", &n) == 1)
 531             m4af_add_itmf_int32_tag(m4af, tag->tag, n);
 532         break;
 533     case M4AF_FOURCC('p','l','I','D'):
 534         {
 535             int64_t qn;
 536             if (sscanf(tag->data, "%" SCNd64, &qn) == 1)
 537                 m4af_add_itmf_int64_tag(m4af, tag->tag, qn);
 538             break;
 539         }
 540     case M4AF_TAG_ARTWORK:
 541         {
 542             int data_type = 0;
 543             if (!memcmp(tag->data, "GIF", 3))
 544                 data_type = M4AF_GIF;
 545             else if (!memcmp(tag->data, "\xff\xd8\xff", 3))
 546                 data_type = M4AF_JPEG;
 547             else if (!memcmp(tag->data, "\x89PNG", 4))
 548                 data_type = M4AF_PNG;
 549             if (data_type)
 550                 m4af_add_itmf_short_tag(m4af, tag->tag, data_type,
 551                                         tag->data, tag->data_size);
 552             break;
 553         }
 554     case M4AF_FOURCC('-','-','-','-'):
 555         {
 556             char *u8 = aacenc_to_utf8(tag->data);
 557             m4af_add_itmf_long_tag(m4af, tag->name, u8);
 558             free(u8);
 559             break;
 560         }
 561     case M4AF_TAG_TITLE:
 562     case M4AF_TAG_ARTIST:
 563     case M4AF_TAG_ALBUM:
 564     case M4AF_TAG_GENRE:
 565     case M4AF_TAG_DATE:
 566     case M4AF_TAG_COMPOSER:
 567     case M4AF_TAG_GROUPING:
 568     case M4AF_TAG_COMMENT:
 569     case M4AF_TAG_LYRICS:
 570     case M4AF_TAG_TOOL:
 571     case M4AF_TAG_ALBUM_ARTIST:
 572     case M4AF_TAG_DESCRIPTION:
 573     case M4AF_TAG_LONG_DESCRIPTION:
 574     case M4AF_TAG_COPYRIGHT:
 575     case M4AF_FOURCC('a','p','I','D'):
 576     case M4AF_FOURCC('c','a','t','g'):
 577     case M4AF_FOURCC('k','e','y','w'):
 578     case M4AF_FOURCC('p','u','r','d'):
 579     case M4AF_FOURCC('p','u','r','l'):
 580     case M4AF_FOURCC('s','o','a','a'):
 581     case M4AF_FOURCC('s','o','a','l'):
 582     case M4AF_FOURCC('s','o','a','r'):
 583     case M4AF_FOURCC('s','o','c','o'):
 584     case M4AF_FOURCC('s','o','n','m'):
 585     case M4AF_FOURCC('s','o','s','n'):
 586     case M4AF_FOURCC('t','v','e','n'):
 587     case M4AF_FOURCC('t','v','n','n'):
 588     case M4AF_FOURCC('t','v','s','h'):
 589     case M4AF_FOURCC('x','i','d',' '):
 590     case M4AF_FOURCC('\xa9','e','n','c'):
 591     case M4AF_FOURCC('\xa9','s','t','3'):
 592         {
 593             char *u8 = aacenc_to_utf8(tag->data);
 594             m4af_add_itmf_string_tag(m4af, tag->tag, u8);
 595             free(u8);
 596             break;
 597         }
 598     default:
 599         fprintf(stderr, "WARNING: unknown/unsupported tag: %c%c%c%c\n",
 600                 tag->tag >> 24, (tag->tag >> 16) & 0xff,
 601                 (tag->tag >> 8) & 0xff, tag->tag & 0xff);
 602     }
 603 }
 604
 605 static
 606 void put_tool_tag(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
 607                   HANDLE_AACENCODER encoder)
 608 {
 609     char tool_info[256];
 610     char *p = tool_info;
 611     LIB_INFO *lib_info = 0;
 612
 613     p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
 614
 615     lib_info = calloc(FDK_MODULE_LAST, sizeof(LIB_INFO));
 616     if (aacEncGetLibInfo(lib_info) == AACENC_OK) {
 617         int i;
 618         for (i = 0; i < FDK_MODULE_LAST; ++i)
 619             if (lib_info[i].module_id == FDK_AACENC)
 620                 break;
 621         p += sprintf(p, "libfdk-aac %s, ", lib_info[i].versionStr);
 622     }
 623     free(lib_info);
 624     if (params->bitrate_mode)
 625         sprintf(p, "VBR mode %d", params->bitrate_mode);
 626     else
 627         sprintf(p, "CBR %dkbps",
 628                 aacEncoder_GetParam(encoder, AACENC_BITRATE) / 1000);
 629
 630     m4af_add_itmf_string_tag(m4af, M4AF_TAG_TOOL, tool_info);
 631 }
 632
 633 static
 634 int finalize_m4a(m4af_writer_t *m4af, const aacenc_param_ex_t *params,
 635                  HANDLE_AACENCODER encoder)
 636 {
 637     unsigned i;
 638     aacenc_tag_entry_t *tag = params->tag_table;
 639     for (i = 0; i < params->tag_count; ++i, ++tag)
 640         put_tag_entry(m4af, tag);
 641
 642     put_tool_tag(m4af, params, encoder);
 643
 644     if (m4af_finalize(m4af) < 0) {
 645         fprintf(stderr, "ERROR: failed to finalize m4a\n");
 646         return -1;
 647     }
 648     return 0;
 649 }
 650
 651 static
 652 char *generate_output_filename(const char *filename, const char *ext)
 653 {
 654     char *p = 0;
 655     size_t ext_len = strlen(ext);
 656
 657     if (strcmp(filename, "-") == 0) {
 658         p = malloc(ext_len + 6);
 659         sprintf(p, "stdin%s", ext);
 660     } else {
 661         const char *base = aacenc_basename(filename);
 662         size_t ilen = strlen(base);
 663         const char *ext_org = strrchr(base, '.');
 664         if (ext_org) ilen = ext_org - base;
 665         p = malloc(ilen + ext_len + 1);
 666         sprintf(p, "%.*s%s", ilen, base, ext);
 667     }
 668     return p;
 669 }
 670
 671 static
 672 int parse_raw_spec(const char *spec, pcm_sample_description_t *desc)
 673 {
 674     unsigned bits;
 675     unsigned char c_type, c_endian = 'L';
 676     int type;
 677
 678     if (sscanf(spec, "%c%u%c", &c_type, &bits, &c_endian) < 2)
 679         return -1;
 680     c_type = toupper(c_type);
 681     c_endian = toupper(c_endian);
 682
 683     if (c_type == 'S')
 684         type = 1;
 685     else if (c_type == 'U')
 686         type = 2;
 687     else if (c_type == 'F')
 688         type = 4;
 689     else
 690         return -1;
 691
 692     if (c_endian == 'B')
 693         type |= 8;
 694     else if (c_endian != 'L')
 695         return -1;
 696
 697     if (c_type == 'F' && bits != 32 && bits != 64)
 698         return -1;
 699     if (c_type != 'F' && (bits < 8 || bits > 32))
 700         return -1;
 701
 702     desc->sample_type = type;
 703     desc->bits_per_channel = bits;
 704     return 0;
 705 }
 706
 707 int main(int argc, char **argv)
 708 {
 709     wav_io_context_t wav_io = { read_callback, seek_callback, tell_callback };
 710     m4af_io_callbacks_t m4af_io = {
 711         write_callback, seek_callback, tell_callback };
 712     aacenc_param_ex_t params = { 0 };
 713
 714     int result = 2;
 715     FILE *ifp = 0;
 716     FILE *ofp = 0;
 717     char *output_filename = 0;
 718     wav_reader_t *wavf = 0;
 719     HANDLE_AACENCODER encoder = 0;
 720     AACENC_InfoStruct aacinfo = { 0 };
 721     m4af_writer_t *m4af = 0;
 722     const pcm_sample_description_t *sample_format;
 723     int downsampled_timescale = 0;
 724     int frame_count = 0;
 725     struct stat stb = { 0 };
 726
 727     setlocale(LC_CTYPE, "");
 728     setbuf(stderr, 0);
 729
 730     if (parse_options(argc, argv, &params) < 0)
 731         return 1;
 732
 733     if ((ifp = aacenc_fopen(params.input_filename, "rb")) == 0) {
 734         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.input_filename,
 735                        strerror(errno));
 736         goto END;
 737     }
 738     if (fstat(fileno(ifp), &stb) == 0 && (stb.st_mode & S_IFMT) != S_IFREG) {
 739         wav_io.seek = 0;
 740         wav_io.tell = 0;
 741     }
 742     if (!params.is_raw) {
 743         if ((wavf = wav_open(&wav_io, ifp, params.ignore_length)) == 0) {
 744             fprintf(stderr, "ERROR: broken / unsupported input file\n");
 745             goto END;
 746         }
 747     } else {
 748         int bytes_per_channel;
 749         pcm_sample_description_t desc = { 0 };
 750         if (parse_raw_spec(params.raw_format, &desc) < 0) {
 751             fprintf(stderr, "ERROR: invalid raw-format spec\n");
 752             goto END;
 753         }
 754         desc.sample_rate = params.raw_rate;
 755         desc.channels_per_frame = params.raw_channels;
 756         bytes_per_channel = (desc.bits_per_channel + 7) / 8;
 757         desc.bytes_per_frame = params.raw_channels * bytes_per_channel;
 758         if ((wavf = raw_open(&wav_io, ifp, &desc)) == 0) {
 759             fprintf(stderr, "ERROR: failed to open raw input\n");
 760             goto END;
 761         }
 762     }
 763     sample_format = wav_get_format(wavf);
 764
 765     if (aacenc_init(&encoder, (aacenc_param_t*)&params, sample_format,
 766                     &aacinfo) < 0)
 767         goto END;
 768
 769     if (!params.output_filename) {
 770         const char *ext = params.transport_format ? ".aac" : ".m4a";
 771         output_filename = generate_output_filename(params.input_filename, ext);
 772         params.output_filename = output_filename;
 773     }
 774
 775     if ((ofp = aacenc_fopen(params.output_filename, "wb")) == 0) {
 776         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.output_filename,
 777                        strerror(errno));
 778         goto END;
 779     }
 780     if (!params.transport_format) {
 781         uint32_t scale;
 782         unsigned framelen = aacinfo.frameLength;
 783         int sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)&params);
 784         int sig_mode = aacEncoder_GetParam(encoder, AACENC_SIGNALING_MODE);
 785         if (sbr_mode && !sig_mode)
 786             downsampled_timescale = 1;
 787         scale = sample_format->sample_rate >> downsampled_timescale;
 788         if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io, ofp)) < 0)
 789             goto END;
 790         m4af_decoder_specific_info(m4af, 0, aacinfo.confBuf, aacinfo.confSize);
 791         m4af_set_fixed_frame_duration(m4af, 0,
 792                                       framelen >> downsampled_timescale);
 793         m4af_begin_write(m4af);
 794     }
 795     frame_count = encode(wavf, encoder, aacinfo.frameLength, ofp, m4af,
 796                          !params.silent);
 797     if (frame_count < 0)
 798         goto END;
 799     if (m4af) {
 800         uint32_t delay = aacinfo.encoderDelay;
 801         int64_t frames_read = wav_get_position(wavf);
 802         uint32_t padding = frame_count * aacinfo.frameLength
 803                             - frames_read - aacinfo.encoderDelay;
 804         m4af_set_priming(m4af, 0, delay >> downsampled_timescale,
 805                          padding >> downsampled_timescale);
 806         if (finalize_m4a(m4af, &params, encoder) < 0)
 807             goto END;
 808     }
 809     result = 0;
 810 END:
 811     if (wavf) wav_teardown(&wavf);
 812     if (ifp) fclose(ifp);
 813     if (m4af) m4af_teardown(&m4af);
 814     if (ofp) fclose(ofp);
 815     if (encoder) aacEncClose(&encoder);
 816     if (output_filename) free(output_filename);
 817     if (params.tag_table) free(params.tag_table);
 818
 819     return result;
 820 }