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 #if HAVE_SIGACTION
  28 #include <signal.h>
  29 #endif
  30 #ifdef _WIN32
  31 #include <io.h>
  32 #define WIN32_LEAN_AND_MEAN
  33 #include <windows.h>
  34 #endif
  35 #include "compat.h"
  36 #include "wav_reader.h"
  37 #include "aacenc.h"
  38 #include "m4af.h"
  39 #include "progress.h"
  40 #include "version.h"
  41 #include "metadata.h"
  42
  43 #define PROGNAME "fdkaac"
  44
  45 static volatile int g_interrupted = 0;
  46
  47 #if HAVE_SIGACTION
  48 static void signal_handler(int signum)
  49 {
  50     g_interrupted = 1;
  51 }
  52 static void handle_signals(void)
  53 {
  54     int i, sigs[] = { SIGINT, SIGHUP, SIGTERM };
  55     for (i = 0; i < sizeof(sigs)/sizeof(sigs[0]); ++i) {
  56         struct sigaction sa = { 0 };
  57         sa.sa_handler = signal_handler;
  58         sa.sa_flags |= SA_RESTART;
  59         sigaction(sigs[i], &sa, 0);
  60     }
  61 }
  62 #elif defined(_WIN32)
  63 static BOOL WINAPI signal_handler(DWORD type)
  64 {
  65     g_interrupted = 1;
  66     return TRUE;
  67 }
  68
  69 static void handle_signals(void)
  70 {
  71     SetConsoleCtrlHandler(signal_handler, TRUE);
  72 }
  73 #else
  74 static void handle_signals(void)
  75 {
  76 }
  77 #endif
  78
  79 static
  80 int read_callback(void *cookie, void *data, uint32_t size)
  81 {
  82     size_t rc = fread(data, 1, size, (FILE*)cookie);
  83     return ferror((FILE*)cookie) ? -1 : (int)rc;
  84 }
  85
  86 static
  87 int write_callback(void *cookie, const void *data, uint32_t size)
  88 {
  89     size_t rc = fwrite(data, 1, size, (FILE*)cookie);
  90     return ferror((FILE*)cookie) ? -1 : (int)rc;
  91 }
  92
  93 static
  94 int seek_callback(void *cookie, int64_t off, int whence)
  95 {
  96     return fseeko((FILE*)cookie, off, whence);
  97 }
  98
  99 static
 100 int64_t tell_callback(void *cookie)
 101 {
 102     return ftello((FILE*)cookie);
 103 }
 104
 105 static
 106 void usage(void)
 107 {
 108     printf(
 109 PROGNAME " %s\n"
 110 "Usage: " PROGNAME " [options] input_file\n"
 111 "Options:\n"
 112 " -h, --help                    Print this help message\n"
 113 " -p, --profile <n>             Profile (audio object type)\n"
 114 "                                 2: MPEG-4 AAC LC (default)\n"
 115 "                                 5: MPEG-4 HE-AAC (SBR)\n"
 116 "                                29: MPEG-4 HE-AAC v2 (SBR+PS)\n"
 117 "                                23: MPEG-4 AAC LD\n"
 118 "                                39: MPEG-4 AAC ELD\n"
 119 "                               129: MPEG-2 AAC LC\n"
 120 "                               132: MPEG-2 HE-AAC (SBR)\n"
 121 "                               156: MPEG-2 HE-AAC v2 (SBR+PS)\n"
 122 " -b, --bitrate <n>             Bitrate in bits per seconds (for CBR)\n"
 123 " -m, --bitrate-mode <n>        Bitrate configuration\n"
 124 "                                 0: CBR (default)\n"
 125 "                                 1-5: VBR\n"
 126 "                               (VBR mode is not officially supported, and\n"
 127 "                                works only on a certain combination of\n"
 128 "                                parameter settings, sample rate, and\n"
 129 "                                channel configuration)\n"
 130 " -w, --bandwidth <n>           Frequency bandwidth in Hz (AAC LC only)\n"
 131 " -a, --afterburner <n>         Afterburner\n"
 132 "                                 0: Off\n"
 133 "                                 1: On(default)\n"
 134 " -L, --lowdelay-sbr            Enable ELD-SBR (AAC ELD only)\n"
 135 " -s, --sbr-signaling <n>       SBR signaling mode\n"
 136 "                                 0: Implicit, backward compatible(default)\n"
 137 "                                 1: Explicit SBR and implicit PS\n"
 138 "                                 2: Explicit hierarchical signaling\n"
 139 " -f, --transport-format <n>    Transport format\n"
 140 "                                 0: RAW (default, muxed into M4A)\n"
 141 "                                 1: ADIF\n"
 142 "                                 2: ADTS\n"
 143 "                                 6: LATM MCP=1\n"
 144 "                                 7: LATM MCP=0\n"
 145 "                                10: LOAS/LATM (LATM within LOAS)\n"
 146 " -C, --adts-crc-check          Add CRC protection on ADTS header\n"
 147 " -h, --header-period <n>       StreamMuxConfig/PCE repetition period in\n"
 148 "                               transport layer\n"
 149 "\n"
 150 " -o <filename>                 Output filename\n"
 151 " -G, --gapless-mode <n>        Encoder delay signaling for gapless playback\n"
 152 "                                 0: iTunSMPB (default)\n"
 153 "                                 1: ISO standard (edts + sgpd)\n"
 154 "                                 2: Both\n"
 155 " --ignorelength                Ignore length of WAV header\n"
 156 " -S, --silent                  Don't print progress messages\n"
 157 "\n"
 158 "Options for raw (headerless) input:\n"
 159 " -R, --raw                     Treat input as raw (by default WAV is\n"
 160 "                               assumed)\n"
 161 " --raw-channels <n>            Number of channels (default: 2)\n"
 162 " --raw-rate     <n>            Sample rate (default: 44100)\n"
 163 " --raw-format   <spec>         Sample format, default is \"S16L\".\n"
 164 "                               Spec is as follows:\n"
 165 "                                1st char: S(igned)|U(nsigned)|F(loat)\n"
 166 "                                2nd part: bits per channel\n"
 167 "                                Last char: L(ittle)|B(ig)\n"
 168 "                               Last char can be omitted, in which case L is\n"
 169 "                               assumed. Spec is case insensitive, therefore\n"
 170 "                               \"u16b\" is same as \"U16B\".\n"
 171 "\n"
 172 "Tagging options:\n"
 173 " --title <string>\n"
 174 " --artist <string>\n"
 175 " --album <string>\n"
 176 " --genre <string>\n"
 177 " --date <string>\n"
 178 " --composer <string>\n"
 179 " --grouping <string>\n"
 180 " --comment <string>\n"
 181 " --album-artist <string>\n"
 182 " --track <number[/total]>\n"
 183 " --disk <number[/total]>\n"
 184 " --tempo <n>\n"
 185 " --tag <fcc>:<value>          Set iTunes predefined tag with four char code.\n"
 186 " --tag-from-file <fcc>:<filename>\n"
 187 "                              Same as above, but value is read from file.\n"
 188 " --long-tag <name>:<value>    Set arbitrary tag as iTunes custom metadata.\n"
 189 " --tag-from-json <filename[?dot_notation]>\n"
 190 "                              Read tags from JSON. By default, tags are\n"
 191 "                              assumed to be direct children of the root\n"
 192 "                              object(dictionary).\n"
 193 "                              Optionally, position of the dictionary\n"
 194 "                              that contains tags can be specified with\n"
 195 "                              dotted notation.\n"
 196 "                              Example:\n"
 197 "                                --tag-from-json /path/to/json?format.tags\n"
 198     , fdkaac_version);
 199 }
 200
 201 typedef struct aacenc_param_ex_t {
 202     AACENC_PARAMS
 203
 204     char *input_filename;
 205     char *output_filename;
 206     unsigned gapless_mode;
 207     unsigned ignore_length;
 208     int silent;
 209
 210     int is_raw;
 211     unsigned raw_channels;
 212     unsigned raw_rate;
 213     const char *raw_format;
 214
 215     aacenc_tag_param_t tags;
 216
 217     char *json_filename;
 218 } aacenc_param_ex_t;
 219
 220 static
 221 int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
 222 {
 223     int ch;
 224     unsigned n;
 225
 226 #define OPT_RAW_CHANNELS         M4AF_FOURCC('r','c','h','n')
 227 #define OPT_RAW_RATE             M4AF_FOURCC('r','r','a','t')
 228 #define OPT_RAW_FORMAT           M4AF_FOURCC('r','f','m','t')
 229 #define OPT_SHORT_TAG            M4AF_FOURCC('s','t','a','g')
 230 #define OPT_SHORT_TAG_FILE       M4AF_FOURCC('s','t','g','f')
 231 #define OPT_LONG_TAG             M4AF_FOURCC('l','t','a','g')
 232 #define OPT_TAG_FROM_JSON        M4AF_FOURCC('t','f','j','s')
 233
 234     static struct option long_options[] = {
 235         { "help",             no_argument,       0, 'h' },
 236         { "profile",          required_argument, 0, 'p' },
 237         { "bitrate",          required_argument, 0, 'b' },
 238         { "bitrate-mode",     required_argument, 0, 'm' },
 239         { "bandwidth",        required_argument, 0, 'w' },
 240         { "afterburner",      required_argument, 0, 'a' },
 241         { "lowdelay-sbr",     no_argument,       0, 'L' },
 242         { "sbr-signaling",    required_argument, 0, 's' },
 243         { "transport-format", required_argument, 0, 'f' },
 244         { "adts-crc-check",   no_argument,       0, 'C' },
 245         { "header-period",    required_argument, 0, 'P' },
 246
 247         { "gapless-mode",     required_argument, 0, 'G' },
 248         { "ignorelength",     no_argument,       0, 'I' },
 249         { "silent",           no_argument,       0, 'S' },
 250
 251         { "raw",              no_argument,       0, 'R' },
 252         { "raw-channels",     required_argument, 0, OPT_RAW_CHANNELS       },
 253         { "raw-rate",         required_argument, 0, OPT_RAW_RATE           },
 254         { "raw-format",       required_argument, 0, OPT_RAW_FORMAT         },
 255
 256         { "title",            required_argument, 0, M4AF_TAG_TITLE         },
 257         { "artist",           required_argument, 0, M4AF_TAG_ARTIST        },
 258         { "album",            required_argument, 0, M4AF_TAG_ALBUM         },
 259         { "genre",            required_argument, 0, M4AF_TAG_GENRE         },
 260         { "date",             required_argument, 0, M4AF_TAG_DATE          },
 261         { "composer",         required_argument, 0, M4AF_TAG_COMPOSER      },
 262         { "grouping",         required_argument, 0, M4AF_TAG_GROUPING      },
 263         { "comment",          required_argument, 0, M4AF_TAG_COMMENT       },
 264         { "album-artist",     required_argument, 0, M4AF_TAG_ALBUM_ARTIST  },
 265         { "track",            required_argument, 0, M4AF_TAG_TRACK         },
 266         { "disk",             required_argument, 0, M4AF_TAG_DISK          },
 267         { "tempo",            required_argument, 0, M4AF_TAG_TEMPO         },
 268         { "tag",              required_argument, 0, OPT_SHORT_TAG          },
 269         { "tag-from-file",    required_argument, 0, OPT_SHORT_TAG_FILE     },
 270         { "long-tag",         required_argument, 0, OPT_LONG_TAG           },
 271         { "tag-from-json",    required_argument, 0, OPT_TAG_FROM_JSON      },
 272         { 0,                  0,                 0, 0                      },
 273     };
 274     params->afterburner = 1;
 275
 276     aacenc_getmainargs(&argc, &argv);
 277     while ((ch = getopt_long(argc, argv, "hp:b:m:w:a:Ls:f:CP:G:Io:SR",
 278                              long_options, 0)) != EOF) {
 279         switch (ch) {
 280         case 'h':
 281             return usage(), -1;
 282         case 'p':
 283             if (sscanf(optarg, "%u", &n) != 1) {
 284                 fprintf(stderr, "invalid arg for profile\n");
 285                 return -1;
 286             }
 287             params->profile = n;
 288             break;
 289         case 'b':
 290             if (sscanf(optarg, "%u", &n) != 1) {
 291                 fprintf(stderr, "invalid arg for bitrate\n");
 292                 return -1;
 293             }
 294             params->bitrate = n;
 295             break;
 296         case 'm':
 297             if (sscanf(optarg, "%u", &n) != 1 || n > 5) {
 298                 fprintf(stderr, "invalid arg for bitrate-mode\n");
 299                 return -1;
 300             }
 301             params->bitrate_mode = n;
 302             break;
 303         case 'w':
 304             if (sscanf(optarg, "%u", &n) != 1) {
 305                 fprintf(stderr, "invalid arg for bandwidth\n");
 306                 return -1;
 307             }
 308             params->bandwidth = n;
 309             break;
 310         case 'a':
 311             if (sscanf(optarg, "%u", &n) != 1 || n > 1) {
 312                 fprintf(stderr, "invalid arg for afterburner\n");
 313                 return -1;
 314             }
 315             params->afterburner = n;
 316             break;
 317         case 'L':
 318             params->lowdelay_sbr = 1;
 319             break;
 320         case 's':
 321             if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
 322                 fprintf(stderr, "invalid arg for sbr-signaling\n");
 323                 return -1;
 324             }
 325             params->sbr_signaling = n;
 326             break;
 327         case 'f':
 328             if (sscanf(optarg, "%u", &n) != 1) {
 329                 fprintf(stderr, "invalid arg for transport-format\n");
 330                 return -1;
 331             }
 332             params->transport_format = n;
 333             break;
 334         case 'C':
 335             params->adts_crc_check = 1;
 336             break;
 337         case 'P':
 338             if (sscanf(optarg, "%u", &n) != 1) {
 339                 fprintf(stderr, "invalid arg for header-period\n");
 340                 return -1;
 341             }
 342             params->header_period = n;
 343             break;
 344         case 'o':
 345             params->output_filename = optarg;
 346             break;
 347         case 'G':
 348             if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
 349                 fprintf(stderr, "invalid arg for gapless-mode\n");
 350                 return -1;
 351             }
 352             params->gapless_mode = n;
 353             break;
 354         case 'I':
 355             params->ignore_length = 1;
 356             break;
 357         case 'S':
 358             params->silent = 1;
 359             break;
 360         case 'R':
 361             params->is_raw = 1;
 362             break;
 363         case OPT_RAW_CHANNELS:
 364             if (sscanf(optarg, "%u", &n) != 1) {
 365                 fprintf(stderr, "invalid arg for raw-channels\n");
 366                 return -1;
 367             }
 368             params->raw_channels = n;
 369             break;
 370         case OPT_RAW_RATE:
 371             if (sscanf(optarg, "%u", &n) != 1) {
 372                 fprintf(stderr, "invalid arg for raw-rate\n");
 373                 return -1;
 374             }
 375             params->raw_rate = n;
 376             break;
 377         case OPT_RAW_FORMAT:
 378             params->raw_format = optarg;
 379             break;
 380         case M4AF_TAG_TITLE:
 381         case M4AF_TAG_ARTIST:
 382         case M4AF_TAG_ALBUM:
 383         case M4AF_TAG_GENRE:
 384         case M4AF_TAG_DATE:
 385         case M4AF_TAG_COMPOSER:
 386         case M4AF_TAG_GROUPING:
 387         case M4AF_TAG_COMMENT:
 388         case M4AF_TAG_ALBUM_ARTIST:
 389         case M4AF_TAG_TRACK:
 390         case M4AF_TAG_DISK:
 391         case M4AF_TAG_TEMPO:
 392             aacenc_param_add_itmf_entry(&params->tags, ch, 0, optarg,
 393                                         strlen(optarg), 0);
 394             break;
 395         case OPT_SHORT_TAG:
 396         case OPT_SHORT_TAG_FILE:
 397         case OPT_LONG_TAG:
 398             {
 399                 char *val;
 400                 size_t klen;
 401                 unsigned fcc = M4AF_FOURCC('-','-','-','-');
 402
 403                 if ((val = strchr(optarg, ':')) == 0) {
 404                     fprintf(stderr, "invalid arg for tag\n");
 405                     return -1;
 406                 }
 407                 *val++ = '\0';
 408                 if (ch == OPT_SHORT_TAG || ch == OPT_SHORT_TAG_FILE) {
 409                     /*
 410                      * take care of U+00A9(COPYRIGHT SIGN).
 411                      * 1) if length of fcc is 3, we prepend '\xa9'.
 412                      * 2) U+00A9 becomes "\xc2\xa9" in UTF-8. Therefore
 413                      *    we remove first '\xc2'.
 414                      */
 415                     if (optarg[0] == '\xc2')
 416                         ++optarg;
 417                     if ((klen = strlen(optarg))== 3)
 418                         fcc = 0xa9;
 419                     else if (klen != 4) {
 420                         fprintf(stderr, "invalid arg for tag\n");
 421                         return -1;
 422                     }
 423                     for (; *optarg; ++optarg)
 424                         fcc = ((fcc << 8) | (*optarg & 0xff));
 425                 }
 426                 aacenc_param_add_itmf_entry(&params->tags, fcc, optarg,
 427                                             val, strlen(val),
 428                                             ch == OPT_SHORT_TAG_FILE);
 429             }
 430             break;
 431         case OPT_TAG_FROM_JSON:
 432             params->json_filename = optarg;
 433             break;
 434         default:
 435             return usage(), -1;
 436         }
 437     }
 438     if (argc == optind)
 439         return usage(), -1;
 440
 441     if (!params->bitrate && !params->bitrate_mode) {
 442         fprintf(stderr, "bitrate or bitrate-mode is mandatory\n");
 443         return -1;
 444     }
 445     if (params->output_filename && !strcmp(params->output_filename, "-") &&
 446         !params->transport_format) {
 447         fprintf(stderr, "stdout streaming is not available on M4A output\n");
 448         return -1;
 449     }
 450     if (params->bitrate && params->bitrate < 10000)
 451         params->bitrate *= 1000;
 452
 453     if (params->is_raw) {
 454         if (!params->raw_channels)
 455             params->raw_channels = 2;
 456         if (!params->raw_rate)
 457             params->raw_rate = 44100;
 458         if (!params->raw_format)
 459             params->raw_format = "S16L";
 460     }
 461     params->input_filename = argv[optind];
 462     return 0;
 463 };
 464
 465 static
 466 int write_sample(FILE *ofp, m4af_ctx_t *m4af,
 467                  const void *data, uint32_t size, uint32_t duration)
 468 {
 469     if (!m4af) {
 470         fwrite(data, 1, size, ofp);
 471         if (ferror(ofp)) {
 472             fprintf(stderr, "ERROR: fwrite(): %s\n", strerror(errno));
 473             return -1;
 474         }
 475     } else if (m4af_write_sample(m4af, 0, data, size, duration) < 0) {
 476         fprintf(stderr, "ERROR: failed to write m4a sample\n");
 477         return -1;
 478     }
 479     return 0;
 480 }
 481
 482 static
 483 int encode(wav_reader_t *wavf, HANDLE_AACENCODER encoder,
 484            uint32_t frame_length, FILE *ofp, m4af_ctx_t *m4af,
 485            int show_progress)
 486 {
 487     uint8_t *ibuf = 0;
 488     int16_t *pcmbuf = 0;
 489     uint32_t pcmsize = 0;
 490     uint8_t *obuf = 0;
 491     uint32_t olen;
 492     uint32_t osize = 0;
 493     int nread = 1;
 494     int consumed;
 495     int rc = -1;
 496     int frames_written = 0;
 497     aacenc_progress_t progress = { 0 };
 498     const pcm_sample_description_t *format = wav_get_format(wavf);
 499
 500     ibuf = malloc(frame_length * format->bytes_per_frame);
 501     aacenc_progress_init(&progress, wav_get_length(wavf), format->sample_rate);
 502     do {
 503         if (g_interrupted)
 504             nread = 0;
 505         else if (nread) {
 506             if ((nread = wav_read_frames(wavf, ibuf, frame_length)) < 0) {
 507                 fprintf(stderr, "ERROR: read failed\n");
 508                 goto END;
 509             } else if (nread > 0) {
 510                 if (pcm_convert_to_native_sint16(format, ibuf, nread,
 511                                                  &pcmbuf, &pcmsize) < 0) {
 512                     fprintf(stderr, "ERROR: unsupported sample format\n");
 513                     goto END;
 514                 }
 515             }
 516             if (show_progress)
 517                 aacenc_progress_update(&progress, wav_get_position(wavf),
 518                                        format->sample_rate * 2);
 519         }
 520         if ((consumed = aac_encode_frame(encoder, format, pcmbuf, nread,
 521                                          &obuf, &olen, &osize)) < 0)
 522             goto END;
 523         if (olen > 0) {
 524             if (write_sample(ofp, m4af, obuf, olen, frame_length) < 0)
 525                 goto END;
 526             ++frames_written;
 527         }
 528     } while (nread > 0 || olen > 0);
 529
 530     if (show_progress)
 531         aacenc_progress_finish(&progress, wav_get_position(wavf));
 532     rc = frames_written;
 533 END:
 534     if (ibuf) free(ibuf);
 535     if (pcmbuf) free(pcmbuf);
 536     if (obuf) free(obuf);
 537     return rc;
 538 }
 539
 540 static
 541 void put_tool_tag(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
 542                   HANDLE_AACENCODER encoder)
 543 {
 544     char tool_info[256];
 545     char *p = tool_info;
 546     LIB_INFO *lib_info = 0;
 547
 548     p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
 549
 550     lib_info = calloc(FDK_MODULE_LAST, sizeof(LIB_INFO));
 551     if (aacEncGetLibInfo(lib_info) == AACENC_OK) {
 552         int i;
 553         for (i = 0; i < FDK_MODULE_LAST; ++i)
 554             if (lib_info[i].module_id == FDK_AACENC)
 555                 break;
 556         p += sprintf(p, "libfdk-aac %s, ", lib_info[i].versionStr);
 557     }
 558     free(lib_info);
 559     if (params->bitrate_mode)
 560         sprintf(p, "VBR mode %d", params->bitrate_mode);
 561     else
 562         sprintf(p, "CBR %dkbps",
 563                 aacEncoder_GetParam(encoder, AACENC_BITRATE) / 1000);
 564
 565     m4af_add_itmf_string_tag(m4af, M4AF_TAG_TOOL, tool_info);
 566 }
 567
 568 static
 569 int finalize_m4a(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
 570                  HANDLE_AACENCODER encoder)
 571 {
 572     unsigned i;
 573     aacenc_tag_entry_t *tag = params->tags.tag_table;
 574
 575     if (params->json_filename)
 576         aacenc_put_tags_from_json(m4af, params->json_filename);
 577
 578     for (i = 0; i < params->tags.tag_count; ++i, ++tag)
 579         aacenc_put_tag_entry(m4af, tag);
 580
 581     put_tool_tag(m4af, params, encoder);
 582
 583     if (m4af_finalize(m4af) < 0) {
 584         fprintf(stderr, "ERROR: failed to finalize m4a\n");
 585         return -1;
 586     }
 587     return 0;
 588 }
 589
 590 static
 591 char *generate_output_filename(const char *filename, const char *ext)
 592 {
 593     char *p = 0;
 594     size_t ext_len = strlen(ext);
 595
 596     if (strcmp(filename, "-") == 0) {
 597         p = malloc(ext_len + 6);
 598         sprintf(p, "stdin%s", ext);
 599     } else {
 600         const char *base = aacenc_basename(filename);
 601         size_t ilen = strlen(base);
 602         const char *ext_org = strrchr(base, '.');
 603         if (ext_org) ilen = ext_org - base;
 604         p = malloc(ilen + ext_len + 1);
 605         sprintf(p, "%.*s%s", ilen, base, ext);
 606     }
 607     return p;
 608 }
 609
 610 static
 611 int parse_raw_spec(const char *spec, pcm_sample_description_t *desc)
 612 {
 613     unsigned bits;
 614     unsigned char c_type, c_endian = 'L';
 615     int type;
 616
 617     if (sscanf(spec, "%c%u%c", &c_type, &bits, &c_endian) < 2)
 618         return -1;
 619     c_type = toupper(c_type);
 620     c_endian = toupper(c_endian);
 621
 622     if (c_type == 'S')
 623         type = 1;
 624     else if (c_type == 'U')
 625         type = 2;
 626     else if (c_type == 'F')
 627         type = 4;
 628     else
 629         return -1;
 630
 631     if (c_endian == 'B')
 632         type |= 8;
 633     else if (c_endian != 'L')
 634         return -1;
 635
 636     if (c_type == 'F' && bits != 32 && bits != 64)
 637         return -1;
 638     if (c_type != 'F' && (bits < 8 || bits > 32))
 639         return -1;
 640
 641     desc->sample_type = type;
 642     desc->bits_per_channel = bits;
 643     return 0;
 644 }
 645
 646 int main(int argc, char **argv)
 647 {
 648     wav_io_context_t wav_io = { read_callback, seek_callback, tell_callback };
 649     m4af_io_callbacks_t
 650         m4af_io = { 0, write_callback, seek_callback, tell_callback };
 651     aacenc_param_ex_t params = { 0 };
 652
 653     int result = 2;
 654     FILE *ifp = 0;
 655     FILE *ofp = 0;
 656     char *output_filename = 0;
 657     wav_reader_t *wavf = 0;
 658     HANDLE_AACENCODER encoder = 0;
 659     AACENC_InfoStruct aacinfo = { 0 };
 660     m4af_ctx_t *m4af = 0;
 661     const pcm_sample_description_t *sample_format;
 662     int downsampled_timescale = 0;
 663     int frame_count = 0;
 664     struct stat stb = { 0 };
 665
 666     setlocale(LC_CTYPE, "");
 667     setbuf(stderr, 0);
 668
 669     if (parse_options(argc, argv, &params) < 0)
 670         return 1;
 671
 672     if ((ifp = aacenc_fopen(params.input_filename, "rb")) == 0) {
 673         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.input_filename,
 674                        strerror(errno));
 675         goto END;
 676     }
 677     if (fstat(fileno(ifp), &stb) == 0 && (stb.st_mode & S_IFMT) != S_IFREG) {
 678         wav_io.seek = 0;
 679         wav_io.tell = 0;
 680     }
 681     if (!params.is_raw) {
 682         if ((wavf = wav_open(&wav_io, ifp, params.ignore_length)) == 0) {
 683             fprintf(stderr, "ERROR: broken / unsupported input file\n");
 684             goto END;
 685         }
 686     } else {
 687         int bytes_per_channel;
 688         pcm_sample_description_t desc = { 0 };
 689         if (parse_raw_spec(params.raw_format, &desc) < 0) {
 690             fprintf(stderr, "ERROR: invalid raw-format spec\n");
 691             goto END;
 692         }
 693         desc.sample_rate = params.raw_rate;
 694         desc.channels_per_frame = params.raw_channels;
 695         bytes_per_channel = (desc.bits_per_channel + 7) / 8;
 696         desc.bytes_per_frame = params.raw_channels * bytes_per_channel;
 697         if ((wavf = raw_open(&wav_io, ifp, &desc)) == 0) {
 698             fprintf(stderr, "ERROR: failed to open raw input\n");
 699             goto END;
 700         }
 701     }
 702     sample_format = wav_get_format(wavf);
 703
 704     if (aacenc_init(&encoder, (aacenc_param_t*)&params, sample_format,
 705                     &aacinfo) < 0)
 706         goto END;
 707
 708     if (!params.output_filename) {
 709         const char *ext = params.transport_format ? ".aac" : ".m4a";
 710         output_filename = generate_output_filename(params.input_filename, ext);
 711         params.output_filename = output_filename;
 712     }
 713
 714     if ((ofp = aacenc_fopen(params.output_filename, "wb")) == 0) {
 715         aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.output_filename,
 716                        strerror(errno));
 717         goto END;
 718     }
 719     handle_signals();
 720     if (!params.transport_format) {
 721         uint32_t scale;
 722         unsigned framelen = aacinfo.frameLength;
 723         int sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)&params);
 724         int sig_mode = aacEncoder_GetParam(encoder, AACENC_SIGNALING_MODE);
 725         if (sbr_mode && !sig_mode)
 726             downsampled_timescale = 1;
 727         scale = sample_format->sample_rate >> downsampled_timescale;
 728         if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io, ofp)) < 0)
 729             goto END;
 730         m4af_set_decoder_specific_info(m4af, 0, aacinfo.confBuf,
 731                                        aacinfo.confSize);
 732         m4af_set_fixed_frame_duration(m4af, 0,
 733                                       framelen >> downsampled_timescale);
 734         m4af_set_priming_mode(m4af, params.gapless_mode + 1);
 735         m4af_begin_write(m4af);
 736     }
 737     frame_count = encode(wavf, encoder, aacinfo.frameLength, ofp, m4af,
 738                          !params.silent);
 739     if (frame_count < 0)
 740         goto END;
 741     if (m4af) {
 742         uint32_t delay = aacinfo.encoderDelay;
 743         int64_t frames_read = wav_get_position(wavf);
 744         uint32_t padding = frame_count * aacinfo.frameLength
 745                             - frames_read - aacinfo.encoderDelay;
 746         m4af_set_priming(m4af, 0, delay >> downsampled_timescale,
 747                          padding >> downsampled_timescale);
 748         if (finalize_m4a(m4af, &params, encoder) < 0)
 749             goto END;
 750     }
 751     result = 0;
 752 END:
 753     if (wavf) wav_teardown(&wavf);
 754     if (ifp) fclose(ifp);
 755     if (m4af) m4af_teardown(&m4af);
 756     if (ofp) fclose(ofp);
 757     if (encoder) aacEncClose(&encoder);
 758     if (output_filename) free(output_filename);
 759     if (params.tags.tag_table) free(params.tags.tag_table);
 760
 761     return result;
 762 }