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