src/flac/main.c

   1 /* flac - Command-line FLAC encoder/decoder
   2  * Copyright (C) 2000,2001,2002  Josh Coalson
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #include <ctype.h>
  20 #include <locale.h>
  21 #include <stdarg.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #ifdef HAVE_CONFIG_H
  27 #include <config.h>
  28 #endif
  29
  30 #if !defined _MSC_VER && !defined __MINGW32__
  31 /* unlink is in stdio.h in VC++ */
  32 #include <unistd.h> /* for unlink() */
  33 #else
  34 #define strcasecmp stricmp
  35 #endif
  36 #include "FLAC/all.h"
  37 #include "share/grabbag.h"
  38 #include "analyze.h"
  39 #include "decode.h"
  40 #include "encode.h"
  41 #include "utils.h"
  42 #include "vorbiscomment.h"
  43
  44 #if 0
  45 /*[JEC] was:#if HAVE_GETOPT_LONG*/
  46 /*[JEC] see flac/include/share/getopt.h as to why the change */
  47 #  include <getopt.h>
  48 #else
  49 #  include "share/getopt.h"
  50 #endif
  51
  52 typedef enum { RAW, WAV, AIF } FileFormat;
  53
  54 static int do_it();
  55
  56 static FLAC__bool init_options();
  57 static int parse_options(int argc, char *argv[]);
  58 static int parse_option(int short_option, const char *long_option, const char *option_argument);
  59 static void free_options();
  60
  61 static int usage_error(const char *message, ...);
  62 static void short_usage();
  63 static void show_version();
  64 static void show_help();
  65 static void show_explain();
  66 static void format_mistake(const char *infilename, const char *wrong, const char *right);
  67
  68 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
  69 static int decode_file(const char *infilename);
  70
  71 static const char *get_encoded_outfilename(const char *infilename);
  72 static const char *get_decoded_outfilename(const char *infilename);
  73
  74 static void die(const char *message);
  75 static char *local_strdup(const char *source);
  76
  77
  78 /*
  79  * share__getopt format struct; note that for long options with no
  80  * short option equivalent we just set the 'val' field to 0.
  81  */
  82 static struct share__option long_options_[] = {
  83         /*
  84          * general options
  85          */
  86         { "help", 0, 0, 'h' },
  87         { "explain", 0, 0, 'H' },
  88         { "version", 0, 0, 'v' },
  89         { "decode", 0, 0, 'd' },
  90         { "analyze", 0, 0, 'a' },
  91         { "test", 0, 0, 't' },
  92         { "stdout", 0, 0, 'c' },
  93         { "silent", 0, 0, 's' },
  94         { "delete-input-file", 0, 0, 0 },
  95         { "output-prefix", 1, 0, 0 },
  96         { "output-name", 1, 0, 'o' },
  97         { "skip", 1, 0, 0 },
  98         { "until", 1, 0, 0 },
  99
 100         /*
 101          * decoding options
 102          */
 103         { "decode-through-errors", 0, 0, 'F' },
 104
 105         /*
 106          * encoding options
 107          */
 108         { "cuesheet", 1, 0, 0 },
 109         { "no-cued-seekpoints", 0, 0, 0 },
 110         { "tag", 1, 0, 'T' },
 111         { "compression-level-0", 0, 0, '0' },
 112         { "compression-level-1", 0, 0, '1' },
 113         { "compression-level-2", 0, 0, '2' },
 114         { "compression-level-3", 0, 0, '3' },
 115         { "compression-level-4", 0, 0, '4' },
 116         { "compression-level-5", 0, 0, '5' },
 117         { "compression-level-6", 0, 0, '6' },
 118         { "compression-level-7", 0, 0, '7' },
 119         { "compression-level-8", 0, 0, '8' },
 120         { "compression-level-9", 0, 0, '9' },
 121         { "best", 0, 0, '8' },
 122         { "fast", 0, 0, '0' },
 123         { "super-secret-totally-impractical-compression-level", 0, 0, 0 },
 124         { "verify", 0, 0, 'V' },
 125         { "force-aiff-format", 0, 0, 0 },
 126         { "force-raw-format", 0, 0, 0 },
 127         { "lax", 0, 0, 0 },
 128         { "replay-gain", 0, 0, 0 },
 129         { "sector-align", 0, 0, 0 },
 130         { "seekpoint", 1, 0, 'S' },
 131         { "padding", 1, 0, 'P' },
 132 #ifdef FLAC__HAS_OGG
 133         { "ogg", 0, 0, 0 },
 134         { "serial-number", 1, 0, 0 },
 135 #endif
 136         { "blocksize", 1, 0, 'b' },
 137         { "exhaustive-model-search", 0, 0, 'e' },
 138 #if 0
 139         /* @@@ deprecated: */
 140         { "escape-coding", 0, 0, 'E' },
 141 #endif
 142         { "max-lpc-order", 1, 0, 'l' },
 143         { "mid-side", 0, 0, 'm' },
 144         { "adaptive-mid-side", 0, 0, 'M' },
 145         { "qlp-coeff-precision-search", 0, 0, 'p' },
 146         { "qlp-coeff-precision", 1, 0, 'q' },
 147         { "rice-partition-order", 1, 0, 'r' },
 148 #if 0
 149         /* @@@ deprecated: */
 150         { "rice-parameter-search-distance", 1, 0, 'R' },
 151 #endif
 152         { "endian", 1, 0, 0 },
 153         { "channels", 1, 0, 0 },
 154         { "bps", 1, 0, 0 },
 155         { "sample-rate", 1, 0, 0 },
 156         { "sign", 1, 0, 0 },
 157
 158         /*
 159          * analysis options
 160          */
 161         { "residual-gnu-plot", 0, 0, 0 },
 162         { "residual-text", 0, 0, 0 },
 163
 164         /*
 165          * negatives
 166          */
 167         { "no-decode-through-errors", 0, 0, 0 },
 168         { "no-silent", 0, 0, 0 },
 169         { "no-seektable", 0, 0, 0 },
 170         { "no-delete-input-file", 0, 0, 0 },
 171         { "no-replay-gain", 0, 0, 0 },
 172         { "no-sector-align", 0, 0, 0 },
 173         { "no-lax", 0, 0, 0 },
 174 #ifdef FLAC__HAS_OGG
 175         { "no-ogg", 0, 0, 0 },
 176 #endif
 177         { "no-exhaustive-model-search", 0, 0, 0 },
 178 #if 0
 179         /* @@@ deprecated: */
 180         { "no-escape-coding", 0, 0, 0 },
 181 #endif
 182         { "no-mid-side", 0, 0, 0 },
 183         { "no-adaptive-mid-side", 0, 0, 0 },
 184         { "no-qlp-coeff-prec-search", 0, 0, 0 },
 185         { "no-padding", 0, 0, 0 },
 186         { "no-verify", 0, 0, 0 },
 187         { "no-residual-gnuplot", 0, 0, 0 },
 188         { "no-residual-text", 0, 0, 0 },
 189         /*
 190          * undocumented debugging options for the test suite
 191          */
 192         { "disable-constant-subframes", 0, 0, 0 },
 193         { "disable-fixed-subframes", 0, 0, 0 },
 194         { "disable-verbatim-subframes", 0, 0, 0 },
 195
 196         {0, 0, 0, 0}
 197 };
 198
 199
 200 /*
 201  * global to hold command-line option values
 202  */
 203
 204 static struct {
 205         FLAC__bool show_help;
 206         FLAC__bool show_explain;
 207         FLAC__bool show_version;
 208         FLAC__bool mode_decode;
 209         FLAC__bool verify;
 210         FLAC__bool verbose;
 211         FLAC__bool continue_through_decode_errors;
 212         FLAC__bool lax;
 213         FLAC__bool test_only;
 214         FLAC__bool analyze;
 215         FLAC__bool use_ogg;
 216         FLAC__bool has_serial_number; /* true iff --serial-number was used */
 217         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
 218         FLAC__bool do_mid_side;
 219         FLAC__bool loose_mid_side;
 220         FLAC__bool do_exhaustive_model_search;
 221         FLAC__bool do_escape_coding;
 222         FLAC__bool do_qlp_coeff_prec_search;
 223         FLAC__bool force_to_stdout;
 224         FLAC__bool force_aiff_format;
 225         FLAC__bool force_raw_format;
 226         FLAC__bool delete_input;
 227         FLAC__bool replay_gain;
 228         FLAC__bool sector_align;
 229         const char *cmdline_forced_outfilename;
 230         const char *output_prefix;
 231         analysis_options aopts;
 232         int padding;
 233         unsigned max_lpc_order;
 234         unsigned qlp_coeff_precision;
 235         const char *skip_specification;
 236         const char *until_specification;
 237         int format_is_big_endian;
 238         int format_is_unsigned_samples;
 239         int format_channels;
 240         int format_bps;
 241         int format_sample_rate;
 242         int blocksize;
 243         int min_residual_partition_order;
 244         int max_residual_partition_order;
 245         int rice_parameter_search_dist;
 246         char requested_seek_points[50000]; /* @@@ bad MAGIC NUMBER but buffer overflow is checked */
 247         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
 248         const char *cuesheet_filename;
 249         FLAC__bool cued_seekpoints;
 250
 251         unsigned num_files;
 252         char **filenames;
 253
 254         FLAC__StreamMetadata *vorbis_comment;
 255
 256         struct {
 257                 FLAC__bool disable_constant_subframes;
 258                 FLAC__bool disable_fixed_subframes;
 259                 FLAC__bool disable_verbatim_subframes;
 260         } debug;
 261 } option_values;
 262
 263
 264 /*
 265  * miscellaneous globals
 266  */
 267
 268 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
 269 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
 270 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
 271
 272
 273 int main(int argc, char *argv[])
 274 {
 275         int retval = 0;
 276
 277         setlocale(LC_ALL, "");
 278         if(!init_options()) {
 279                 fprintf(stderr, "ERROR: allocating memory\n");
 280                 retval = 1;
 281         }
 282         else {
 283                 if((retval = parse_options(argc, argv)) == 0)
 284                         retval = do_it();
 285         }
 286
 287         free_options();
 288
 289         return retval;
 290 }
 291
 292 int do_it()
 293 {
 294         int retval = 0;
 295
 296         if(option_values.show_version) {
 297                 show_version();
 298                 return 0;
 299         }
 300         else if(option_values.show_explain) {
 301                 show_explain();
 302                 return 0;
 303         }
 304         else if(option_values.show_help) {
 305                 show_help();
 306                 return 0;
 307         }
 308         else {
 309                 if(option_values.num_files == 0) {
 310                         short_usage();
 311                         return 0;
 312                 }
 313
 314                 /*
 315                  * tweak options; validate the values
 316                  */
 317                 if(!option_values.mode_decode) {
 318                         if(option_values.blocksize < 0) {
 319                                 if(option_values.max_lpc_order == 0)
 320                                         option_values.blocksize = 1152;
 321                                 else
 322                                         option_values.blocksize = 4608;
 323                         }
 324                         if(option_values.max_residual_partition_order < 0) {
 325                                 if(option_values.blocksize <= 1152)
 326                                         option_values.max_residual_partition_order = 2;
 327                                 else if(option_values.blocksize <= 2304)
 328                                         option_values.max_residual_partition_order = 3;
 329                                 else if(option_values.blocksize <= 4608)
 330                                         option_values.max_residual_partition_order = 3;
 331                                 else
 332                                         option_values.max_residual_partition_order = 4;
 333                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
 334                         }
 335                         if(option_values.rice_parameter_search_dist < 0) {
 336                                 option_values.rice_parameter_search_dist = 0;
 337                         }
 338                 }
 339                 else {
 340                         if(option_values.test_only) {
 341                                 if(0 != option_values.skip_specification)
 342                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
 343                                 if(0 != option_values.until_specification)
 344                                         return usage_error("ERROR: --until is not allowed in test mode\n");
 345                         }
 346                 }
 347
 348                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
 349
 350                 if(option_values.format_channels >= 0) {
 351                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
 352                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
 353                 }
 354                 if(option_values.format_bps >= 0) {
 355                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
 356                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
 357                 }
 358                 if(option_values.format_sample_rate >= 0) {
 359                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
 360                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
 361                 }
 362                 if(option_values.force_raw_format && option_values.force_aiff_format)
 363                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
 364                 if(option_values.mode_decode) {
 365                         if(!option_values.force_raw_format) {
 366                                 if(option_values.format_is_big_endian >= 0)
 367                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
 368                                 if(option_values.format_is_unsigned_samples >= 0)
 369                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
 370                         }
 371                         if(option_values.format_channels >= 0)
 372                                 return usage_error("ERROR: --channels not allowed with --decode\n");
 373                         if(option_values.format_bps >= 0)
 374                                 return usage_error("ERROR: --bps not allowed with --decode\n");
 375                         if(option_values.format_sample_rate >= 0)
 376                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
 377                 }
 378                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
 379                         return usage_error("ERROR: invalid blocksize '%u', must be >= %u and <= %u\n", (unsigned)option_values.blocksize, FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE);
 380                 }
 381                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
 382                         return usage_error("ERROR: invalid value '%u' for qlp coeff precision, must be 0 or >= %u\n", option_values.qlp_coeff_precision, FLAC__MIN_QLP_COEFF_PRECISION);
 383                 }
 384
 385                 if(option_values.sector_align) {
 386                         if(option_values.mode_decode)
 387                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
 388                         if(0 != option_values.skip_specification)
 389                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
 390                         if(0 != option_values.until_specification)
 391                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
 392                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
 393                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
 394                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
 395                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
 396                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
 397                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
 398                 }
 399                 if(option_values.replay_gain) {
 400                         if(option_values.force_to_stdout)
 401                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
 402                         if(option_values.mode_decode)
 403                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
 404                         if(option_values.format_channels > 2)
 405                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
 406                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
 407                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
 408                         /*
 409                          * We want to reserve padding space for the ReplayGain
 410                          * tags that we will set later, to avoid rewriting the
 411                          * whole file.
 412                          */
 413                         if(option_values.padding < 0) {
 414                                 fprintf(stderr, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
 415                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
 416                         }
 417                         else {
 418                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
 419                         }
 420                 }
 421                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
 422                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
 423                 }
 424                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
 425                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
 426                 }
 427                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
 428                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
 429                 }
 430         }
 431         if(option_values.verbose) {
 432                 fprintf(stderr, "\n");
 433                 fprintf(stderr, "flac %s, Copyright (C) 2000,2001,2002 Josh Coalson\n", FLAC__VERSION_STRING);
 434                 fprintf(stderr, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
 435                 fprintf(stderr, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
 436
 437                 if(!option_values.mode_decode) {
 438                         char padopt[16];
 439                         if(option_values.padding < 0)
 440                                 strcpy(padopt, "-");
 441                         else
 442                                 sprintf(padopt, " %d", option_values.padding);
 443                         fprintf(stderr,
 444                                 "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
 445                                 option_values.delete_input?" --delete-input-file":"",
 446                                 option_values.sector_align?" --sector-align":"",
 447                                 option_values.use_ogg?" --ogg":"",
 448                                 option_values.lax?" --lax":"",
 449                                 padopt,
 450                                 (unsigned)option_values.blocksize,
 451                                 option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
 452                                 option_values.max_lpc_order,
 453                                 option_values.do_exhaustive_model_search?" -e":"",
 454                                 option_values.do_escape_coding?" -E":"",
 455                                 option_values.do_qlp_coeff_prec_search?" -p":"",
 456                                 option_values.qlp_coeff_precision,
 457                                 (unsigned)option_values.min_residual_partition_order,
 458                                 (unsigned)option_values.max_residual_partition_order,
 459                                 option_values.verify? " -V":""
 460                         );
 461                 }
 462         }
 463
 464         if(option_values.mode_decode) {
 465                 FLAC__bool first = true;
 466
 467                 if(option_values.num_files == 0) {
 468                         retval = decode_file("-");
 469                 }
 470                 else {
 471                         unsigned i;
 472                         if(option_values.num_files > 1)
 473                                 option_values.cmdline_forced_outfilename = 0;
 474                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 475                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 476                                         continue;
 477                                 retval |= decode_file(option_values.filenames[i]);
 478                                 first = false;
 479                         }
 480                 }
 481         }
 482         else { /* encode */
 483                 FLAC__bool first = true;
 484
 485                 if(option_values.num_files == 0) {
 486                         retval = encode_file("-", first, true);
 487                 }
 488                 else {
 489                         unsigned i;
 490                         if(option_values.num_files > 1)
 491                                 option_values.cmdline_forced_outfilename = 0;
 492                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 493                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 494                                         continue;
 495                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
 496                                 first = false;
 497                         }
 498                         if(option_values.replay_gain && retval == 0) {
 499                                 float album_gain, album_peak;
 500                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
 501                                 for(i = 0; i < option_values.num_files; i++) {
 502                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
 503                                         if(0 == strcmp(option_values.filenames[i], "-"))
 504                                                 FLAC__ASSERT(0);
 505                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
 506                                                 fprintf(stderr, "%s: ERROR writing ReplayGain album tags\n", outfilename);
 507                                                 retval = 1;
 508                                         }
 509                                 }
 510                         }
 511                 }
 512         }
 513
 514         return retval;
 515 }
 516
 517 FLAC__bool init_options()
 518 {
 519         option_values.show_help = false;
 520         option_values.show_explain = false;
 521         option_values.mode_decode = false;
 522         option_values.verify = false;
 523         option_values.verbose = true;
 524         option_values.continue_through_decode_errors = false;
 525         option_values.lax = false;
 526         option_values.test_only = false;
 527         option_values.analyze = false;
 528         option_values.use_ogg = false;
 529         option_values.has_serial_number = false;
 530         option_values.serial_number = 0;
 531         option_values.do_mid_side = true;
 532         option_values.loose_mid_side = false;
 533         option_values.do_exhaustive_model_search = false;
 534         option_values.do_escape_coding = false;
 535         option_values.do_qlp_coeff_prec_search = false;
 536         option_values.force_to_stdout = false;
 537         option_values.force_aiff_format = false;
 538         option_values.force_raw_format = false;
 539         option_values.delete_input = false;
 540         option_values.replay_gain = false;
 541         option_values.sector_align = false;
 542         option_values.cmdline_forced_outfilename = 0;
 543         option_values.output_prefix = 0;
 544         option_values.aopts.do_residual_text = false;
 545         option_values.aopts.do_residual_gnuplot = false;
 546         option_values.padding = 4096;
 547         option_values.max_lpc_order = 8;
 548         option_values.qlp_coeff_precision = 0;
 549         option_values.skip_specification = 0;
 550         option_values.until_specification = 0;
 551         option_values.format_is_big_endian = -1;
 552         option_values.format_is_unsigned_samples = -1;
 553         option_values.format_channels = -1;
 554         option_values.format_bps = -1;
 555         option_values.format_sample_rate = -1;
 556         option_values.blocksize = -1;
 557         option_values.min_residual_partition_order = -1;
 558         option_values.max_residual_partition_order = -1;
 559         option_values.rice_parameter_search_dist = -1;
 560         option_values.requested_seek_points[0] = '\0';
 561         option_values.num_requested_seek_points = -1;
 562         option_values.cuesheet_filename = 0;
 563         option_values.cued_seekpoints = true;
 564
 565         option_values.num_files = 0;
 566         option_values.filenames = 0;
 567
 568         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
 569                 return false;
 570
 571         option_values.debug.disable_constant_subframes = false;
 572         option_values.debug.disable_fixed_subframes = false;
 573         option_values.debug.disable_verbatim_subframes = false;
 574
 575         return true;
 576 }
 577
 578 int parse_options(int argc, char *argv[])
 579 {
 580         int short_option;
 581         int option_index = 1;
 582         FLAC__bool had_error = false;
 583         /*@@@ E and R: are deprecated */
 584         const char *short_opts = "0123456789ab:cdeFhHl:mMo:pP:q:r:sS:tT:vV";
 585
 586         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
 587                 switch (short_option) {
 588                         case 0: /* long option with no equivalent short option */
 589                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
 590                                 break;
 591                         case '?':
 592                         case ':':
 593                                 had_error = true;
 594                                 break;
 595                         default: /* short option */
 596                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
 597                                 break;
 598                 }
 599         }
 600
 601         if(had_error) {
 602                 return 1;
 603         }
 604
 605         FLAC__ASSERT(share__optind <= argc);
 606
 607         option_values.num_files = argc - share__optind;
 608
 609         if(option_values.num_files > 0) {
 610                 unsigned i = 0;
 611                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
 612                         die("out of memory allocating space for file names list");
 613                 while(share__optind < argc)
 614                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
 615         }
 616
 617         return 0;
 618 }
 619
 620 int parse_option(int short_option, const char *long_option, const char *option_argument)
 621 {
 622         char *p;
 623
 624         if(short_option == 0) {
 625                 FLAC__ASSERT(0 != long_option);
 626                 if(0 == strcmp(long_option, "delete-input-file")) {
 627                         option_values.delete_input = true;
 628                 }
 629                 else if(0 == strcmp(long_option, "output-prefix")) {
 630                         FLAC__ASSERT(0 != option_argument);
 631                         option_values.output_prefix = option_argument;
 632                 }
 633                 else if(0 == strcmp(long_option, "skip")) {
 634                         FLAC__ASSERT(0 != option_argument);
 635                         option_values.skip_specification = option_argument;
 636                 }
 637                 else if(0 == strcmp(long_option, "until")) {
 638                         FLAC__ASSERT(0 != option_argument);
 639                         option_values.until_specification = option_argument;
 640                 }
 641                 else if(0 == strcmp(long_option, "cuesheet")) {
 642                         FLAC__ASSERT(0 != option_argument);
 643                         option_values.cuesheet_filename = option_argument;
 644                 }
 645                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
 646                         option_values.cued_seekpoints = false;
 647                 }
 648                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
 649                         option_values.lax = true;
 650                         option_values.do_exhaustive_model_search = true;
 651                         option_values.do_escape_coding = true;
 652                         option_values.do_mid_side = true;
 653                         option_values.loose_mid_side = false;
 654                         option_values.do_qlp_coeff_prec_search = true;
 655                         option_values.min_residual_partition_order = 0;
 656                         option_values.max_residual_partition_order = 16;
 657                         option_values.rice_parameter_search_dist = 0;
 658                         option_values.max_lpc_order = 32;
 659                 }
 660                 else if(0 == strcmp(long_option, "force-aiff-format")) {
 661                         option_values.force_aiff_format = true;
 662                 }
 663                 else if(0 == strcmp(long_option, "force-raw-format")) {
 664                         option_values.force_raw_format = true;
 665                 }
 666                 else if(0 == strcmp(long_option, "lax")) {
 667                         option_values.lax = true;
 668                 }
 669                 else if(0 == strcmp(long_option, "replay-gain")) {
 670                         option_values.replay_gain = true;
 671                 }
 672                 else if(0 == strcmp(long_option, "sector-align")) {
 673                         option_values.sector_align = true;
 674                 }
 675 #ifdef FLAC__HAS_OGG
 676                 else if(0 == strcmp(long_option, "ogg")) {
 677                         option_values.use_ogg = true;
 678                 }
 679                 else if(0 == strcmp(long_option, "serial-number")) {
 680                         option_values.has_serial_number = true;
 681                         option_values.serial_number = atol(option_argument);
 682                 }
 683 #endif
 684                 else if(0 == strcmp(long_option, "endian")) {
 685                         FLAC__ASSERT(0 != option_argument);
 686                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
 687                                 option_values.format_is_big_endian = true;
 688                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
 689                                 option_values.format_is_big_endian = false;
 690                         else
 691                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
 692                 }
 693                 else if(0 == strcmp(long_option, "channels")) {
 694                         FLAC__ASSERT(0 != option_argument);
 695                         option_values.format_channels = atoi(option_argument);
 696                 }
 697                 else if(0 == strcmp(long_option, "bps")) {
 698                         FLAC__ASSERT(0 != option_argument);
 699                         option_values.format_bps = atoi(option_argument);
 700                 }
 701                 else if(0 == strcmp(long_option, "sample-rate")) {
 702                         FLAC__ASSERT(0 != option_argument);
 703                         option_values.format_sample_rate = atoi(option_argument);
 704                 }
 705                 else if(0 == strcmp(long_option, "sign")) {
 706                         FLAC__ASSERT(0 != option_argument);
 707                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
 708                                 option_values.format_is_unsigned_samples = false;
 709                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
 710                                 option_values.format_is_unsigned_samples = true;
 711                         else
 712                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
 713                 }
 714                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
 715                         option_values.aopts.do_residual_gnuplot = true;
 716                 }
 717                 else if(0 == strcmp(long_option, "residual-text")) {
 718                         option_values.aopts.do_residual_text = true;
 719                 }
 720                 /*
 721                  * negatives
 722                  */
 723                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
 724                         option_values.continue_through_decode_errors = false;
 725                 }
 726                 else if(0 == strcmp(long_option, "no-silent")) {
 727                         option_values.verbose = true;
 728                 }
 729                 else if(0 == strcmp(long_option, "no-seektable")) {
 730                         option_values.num_requested_seek_points = 0;
 731                         option_values.requested_seek_points[0] = '\0';
 732                 }
 733                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
 734                         option_values.delete_input = false;
 735                 }
 736                 else if(0 == strcmp(long_option, "no-replay-gain")) {
 737                         option_values.replay_gain = false;
 738                 }
 739                 else if(0 == strcmp(long_option, "no-sector-align")) {
 740                         option_values.sector_align = false;
 741                 }
 742                 else if(0 == strcmp(long_option, "no-lax")) {
 743                         option_values.lax = false;
 744                 }
 745 #ifdef FLAC__HAS_OGG
 746                 else if(0 == strcmp(long_option, "no-ogg")) {
 747                         option_values.use_ogg = false;
 748                 }
 749 #endif
 750                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
 751                         option_values.do_exhaustive_model_search = false;
 752                 }
 753 #if 0
 754                 /* @@@ deprecated: */
 755                 else if(0 == strcmp(long_option, "no-escape-coding")) {
 756                         option_values.do_escape_coding = false;
 757                 }
 758 #endif
 759                 else if(0 == strcmp(long_option, "no-mid-side")) {
 760                         option_values.do_mid_side = option_values.loose_mid_side = false;
 761                 }
 762                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
 763                         option_values.loose_mid_side = option_values.do_mid_side = false;
 764                 }
 765                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
 766                         option_values.do_qlp_coeff_prec_search = false;
 767                 }
 768                 else if(0 == strcmp(long_option, "no-padding")) {
 769                         option_values.padding = -1;
 770                 }
 771                 else if(0 == strcmp(long_option, "no-verify")) {
 772                         option_values.verify = false;
 773                 }
 774                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
 775                         option_values.aopts.do_residual_gnuplot = false;
 776                 }
 777                 else if(0 == strcmp(long_option, "no-residual-text")) {
 778                         option_values.aopts.do_residual_text = false;
 779                 }
 780                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
 781                         option_values.debug.disable_constant_subframes = true;
 782                 }
 783                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
 784                         option_values.debug.disable_fixed_subframes = true;
 785                 }
 786                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
 787                         option_values.debug.disable_verbatim_subframes = true;
 788                 }
 789         }
 790         else {
 791                 const char *violation;
 792                 switch(short_option) {
 793                         case 'h':
 794                                 option_values.show_help = true;
 795                                 break;
 796                         case 'H':
 797                                 option_values.show_explain = true;
 798                                 break;
 799                         case 'v':
 800                                 option_values.show_version = true;
 801                                 break;
 802                         case 'd':
 803                                 option_values.mode_decode = true;
 804                                 break;
 805                         case 'a':
 806                                 option_values.mode_decode = true;
 807                                 option_values.analyze = true;
 808                                 break;
 809                         case 't':
 810                                 option_values.mode_decode = true;
 811                                 option_values.test_only = true;
 812                                 break;
 813                         case 'c':
 814                                 option_values.force_to_stdout = true;
 815                                 break;
 816                         case 's':
 817                                 option_values.verbose = false;
 818                                 break;
 819                         case 'o':
 820                                 FLAC__ASSERT(0 != option_argument);
 821                                 option_values.cmdline_forced_outfilename = option_argument;
 822                                 break;
 823                         case 'F':
 824                                 option_values.continue_through_decode_errors = true;
 825                                 break;
 826                         case 'T':
 827                                 FLAC__ASSERT(0 != option_argument);
 828                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
 829                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
 830                                 break;
 831                         case '0':
 832                                 option_values.do_exhaustive_model_search = false;
 833                                 option_values.do_escape_coding = false;
 834                                 option_values.do_mid_side = false;
 835                                 option_values.loose_mid_side = false;
 836                                 option_values.qlp_coeff_precision = 0;
 837                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 838                                 option_values.rice_parameter_search_dist = 0;
 839                                 option_values.max_lpc_order = 0;
 840                                 break;
 841                         case '1':
 842                                 option_values.do_exhaustive_model_search = false;
 843                                 option_values.do_escape_coding = false;
 844                                 option_values.do_mid_side = true;
 845                                 option_values.loose_mid_side = true;
 846                                 option_values.qlp_coeff_precision = 0;
 847                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 848                                 option_values.rice_parameter_search_dist = 0;
 849                                 option_values.max_lpc_order = 0;
 850                                 break;
 851                         case '2':
 852                                 option_values.do_exhaustive_model_search = false;
 853                                 option_values.do_escape_coding = false;
 854                                 option_values.do_mid_side = true;
 855                                 option_values.loose_mid_side = false;
 856                                 option_values.qlp_coeff_precision = 0;
 857                                 option_values.min_residual_partition_order = 0;
 858                                 option_values.max_residual_partition_order = 3;
 859                                 option_values.rice_parameter_search_dist = 0;
 860                                 option_values.max_lpc_order = 0;
 861                                 break;
 862                         case '3':
 863                                 option_values.do_exhaustive_model_search = false;
 864                                 option_values.do_escape_coding = false;
 865                                 option_values.do_mid_side = false;
 866                                 option_values.loose_mid_side = false;
 867                                 option_values.qlp_coeff_precision = 0;
 868                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 869                                 option_values.rice_parameter_search_dist = 0;
 870                                 option_values.max_lpc_order = 6;
 871                                 break;
 872                         case '4':
 873                                 option_values.do_exhaustive_model_search = false;
 874                                 option_values.do_escape_coding = false;
 875                                 option_values.do_mid_side = true;
 876                                 option_values.loose_mid_side = true;
 877                                 option_values.qlp_coeff_precision = 0;
 878                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 879                                 option_values.rice_parameter_search_dist = 0;
 880                                 option_values.max_lpc_order = 8;
 881                                 break;
 882                         case '5':
 883                                 option_values.do_exhaustive_model_search = false;
 884                                 option_values.do_escape_coding = false;
 885                                 option_values.do_mid_side = true;
 886                                 option_values.loose_mid_side = false;
 887                                 option_values.qlp_coeff_precision = 0;
 888                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 889                                 option_values.rice_parameter_search_dist = 0;
 890                                 option_values.max_lpc_order = 8;
 891                                 break;
 892                         case '6':
 893                                 option_values.do_exhaustive_model_search = false;
 894                                 option_values.do_escape_coding = false;
 895                                 option_values.do_mid_side = true;
 896                                 option_values.loose_mid_side = false;
 897                                 option_values.qlp_coeff_precision = 0;
 898                                 option_values.min_residual_partition_order = 0;
 899                                 option_values.max_residual_partition_order = 4;
 900                                 option_values.rice_parameter_search_dist = 0;
 901                                 option_values.max_lpc_order = 8;
 902                                 break;
 903                         case '7':
 904                                 option_values.do_exhaustive_model_search = true;
 905                                 option_values.do_escape_coding = false;
 906                                 option_values.do_mid_side = true;
 907                                 option_values.loose_mid_side = false;
 908                                 option_values.qlp_coeff_precision = 0;
 909                                 option_values.min_residual_partition_order = 0;
 910                                 option_values.max_residual_partition_order = 6;
 911                                 option_values.rice_parameter_search_dist = 0;
 912                                 option_values.max_lpc_order = 8;
 913                                 break;
 914                         case '8':
 915                                 option_values.do_exhaustive_model_search = true;
 916                                 option_values.do_escape_coding = false;
 917                                 option_values.do_mid_side = true;
 918                                 option_values.loose_mid_side = false;
 919                                 option_values.qlp_coeff_precision = 0;
 920                                 option_values.min_residual_partition_order = 0;
 921                                 option_values.max_residual_partition_order = 6;
 922                                 option_values.rice_parameter_search_dist = 0;
 923                                 option_values.max_lpc_order = 12;
 924                                 break;
 925                         case '9':
 926                                 return usage_error("ERROR: compression level '9' is reserved\n");
 927                         case 'V':
 928                                 option_values.verify = true;
 929                                 break;
 930                         case 'S':
 931                                 FLAC__ASSERT(0 != option_argument);
 932                                 if(option_values.num_requested_seek_points < 0)
 933                                         option_values.num_requested_seek_points = 0;
 934                                 option_values.num_requested_seek_points++;
 935                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
 936                                         return usage_error("ERROR: too many seekpoints requested\n");
 937                                 }
 938                                 else {
 939                                         strcat(option_values.requested_seek_points, option_argument);
 940                                         strcat(option_values.requested_seek_points, ";");
 941                                 }
 942                                 break;
 943                         case 'P':
 944                                 FLAC__ASSERT(0 != option_argument);
 945                                 option_values.padding = atoi(option_argument);
 946                                 if(option_values.padding < 0)
 947                                         return usage_error("ERROR: argument to -P must be >= 0\n");
 948                                 break;
 949                         case 'b':
 950                                 FLAC__ASSERT(0 != option_argument);
 951                                 option_values.blocksize = atoi(option_argument);
 952                                 break;
 953                         case 'e':
 954                                 option_values.do_exhaustive_model_search = true;
 955                                 break;
 956                         case 'E':
 957                                 option_values.do_escape_coding = true;
 958                                 break;
 959                         case 'l':
 960                                 FLAC__ASSERT(0 != option_argument);
 961                                 option_values.max_lpc_order = atoi(option_argument);
 962                                 break;
 963                         case 'm':
 964                                 option_values.do_mid_side = true;
 965                                 option_values.loose_mid_side = false;
 966                                 break;
 967                         case 'M':
 968                                 option_values.loose_mid_side = option_values.do_mid_side = true;
 969                                 break;
 970                         case 'p':
 971                                 option_values.do_qlp_coeff_prec_search = true;
 972                                 break;
 973                         case 'q':
 974                                 FLAC__ASSERT(0 != option_argument);
 975                                 option_values.qlp_coeff_precision = atoi(option_argument);
 976                                 break;
 977                         case 'r':
 978                                 FLAC__ASSERT(0 != option_argument);
 979                                 p = strchr(option_argument, ',');
 980                                 if(0 == p) {
 981                                         option_values.min_residual_partition_order = 0;
 982                                         option_values.max_residual_partition_order = atoi(option_argument);
 983                                 }
 984                                 else {
 985                                         option_values.min_residual_partition_order = atoi(option_argument);
 986                                         option_values.max_residual_partition_order = atoi(++p);
 987                                 }
 988                                 break;
 989                         case 'R':
 990                                 FLAC__ASSERT(0 != option_argument);
 991                                 option_values.rice_parameter_search_dist = atoi(option_argument);
 992                                 break;
 993                         default:
 994                                 FLAC__ASSERT(0);
 995                 }
 996         }
 997
 998         return 0;
 999 }
1000
1001 void free_options()
1002 {
1003         unsigned i;
1004         if(0 != option_values.filenames) {
1005                 for(i = 0; i < option_values.num_files; i++) {
1006                         if(0 != option_values.filenames[i])
1007                                 free(option_values.filenames[i]);
1008                 }
1009                 free(option_values.filenames);
1010         }
1011         if(0 != option_values.vorbis_comment)
1012                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1013 }
1014
1015 int usage_error(const char *message, ...)
1016 {
1017         va_list args;
1018
1019         FLAC__ASSERT(0 != message);
1020
1021         va_start(args, message);
1022
1023         (void) vfprintf(stderr, message, args);
1024
1025         va_end(args);
1026
1027         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1028
1029         return 1;
1030 }
1031
1032 void show_version()
1033 {
1034         printf("flac %s\n", FLAC__VERSION_STRING);
1035 }
1036
1037 static void usage_header()
1038 {
1039         printf("===============================================================================\n");
1040         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1041         printf("Copyright (C) 2000,2001,2002  Josh Coalson\n");
1042         printf("\n");
1043         printf("This program is free software; you can redistribute it and/or\n");
1044         printf("modify it under the terms of the GNU General Public License\n");
1045         printf("as published by the Free Software Foundation; either version 2\n");
1046         printf("of the License, or (at your option) any later version.\n");
1047         printf("\n");
1048         printf("This program is distributed in the hope that it will be useful,\n");
1049         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1050         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1051         printf("GNU General Public License for more details.\n");
1052         printf("\n");
1053         printf("You should have received a copy of the GNU General Public License\n");
1054         printf("along with this program; if not, write to the Free Software\n");
1055         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1056         printf("===============================================================================\n");
1057 }
1058
1059 static void usage_summary()
1060 {
1061         printf("Usage:\n");
1062         printf("\n");
1063         printf(" Encoding: flac [-s] [--skip #] [<encoding/format-options>] [INPUTFILE [...]]\n");
1064         printf(" Decoding: flac -d [-s] [--skip #] [-F] [<format-options>] [INPUTFILE [...]]\n");
1065         printf("  Testing: flac -t [-s] [INPUTFILE [...]]\n");
1066         printf("Analyzing: flac -a [-s] [--skip #] [<analysis-options>] [INPUTFILE [...]]\n");
1067         printf("\n");
1068 }
1069
1070 void short_usage()
1071 {
1072         usage_header();
1073         printf("\n");
1074         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1075         printf("instructions use 'flac --explain'\n");
1076         printf("\n");
1077         printf("To encode:\n");
1078         printf("  flac [-#] [INPUTFILE [...]]\n");
1079         printf("\n");
1080         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1081         printf("\n");
1082         printf("To decode:\n");
1083         printf("  flac -d [INPUTFILE [...]]\n");
1084         printf("\n");
1085         printf("To test:\n");
1086         printf("  flac -t [INPUTFILE [...]]\n");
1087 }
1088
1089 void show_help()
1090 {
1091         usage_header();
1092         usage_summary();
1093         printf("generic options:\n");
1094         printf("  -v, --version                Show the flac version number\n");
1095         printf("  -h, --help                   Show this screen\n");
1096         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1097         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1098         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1099         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1100         printf("  -c, --stdout                 Write output to stdout\n");
1101         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1102         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1103         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1104         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1105         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1106         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1107         printf("analysis options:\n");
1108         printf("      --residual-text          Include residual signal in text output\n");
1109         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1110         printf("decoding options:\n");
1111         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1112         printf("encoding options:\n");
1113         printf("  -V, --verify                 Verify a correct encoding\n");
1114 #ifdef FLAC__HAS_OGG
1115         printf("      --ogg                    Use Ogg as transport layer\n");
1116         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1117 #endif
1118         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1119         printf("      --sector-align           Align multiple files on sector boundaries\n");
1120         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1121         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1122         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1123         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1124         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1125         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1126         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1127         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1128         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1129         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1130         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1131         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1132         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1133         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1134         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1135         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1136         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1137         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1138 #if 0
1139         /*@@@ deprecated: */
1140         printf("  -E, --escape-coding                Do escape coding in the entropy coder\n");
1141 #endif
1142         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1143         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1144         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1145         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1146 #if 0
1147         /*@@@ deprecated: */
1148         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1149 #endif
1150         printf("format options:\n");
1151         printf("      --endian={big|little}    Set byte order for samples\n");
1152         printf("      --channels=#             Number of channels\n");
1153         printf("      --bps=#                  Number of bits per sample\n");
1154         printf("      --sample-rate=#          Sample rate in Hz\n");
1155         printf("      --sign={signed|unsigned} Sign of samples\n");
1156         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1157         printf("      --force-raw-format       Treat input or output as raw samples\n");
1158         printf("negative options:\n");
1159         printf("      --no-adaptive-mid-side\n");
1160         printf("      --no-decode-through-errors\n");
1161         printf("      --no-delete-input-file\n");
1162 #if 0
1163 /* @@@ deprecated: */
1164         printf("      --no-escape-coding\n");
1165 #endif
1166         printf("      --no-exhaustive-model-search\n");
1167         printf("      --no-lax\n");
1168         printf("      --no-mid-side\n");
1169 #ifdef FLAC__HAS_OGG
1170         printf("      --no-ogg\n");
1171 #endif
1172         printf("      --no-padding\n");
1173         printf("      --no-qlp-coeff-prec-search\n");
1174         printf("      --no-replay-gain\n");
1175         printf("      --no-residual-gnuplot\n");
1176         printf("      --no-residual-text\n");
1177         printf("      --no-sector-align\n");
1178         printf("      --no-seektable\n");
1179         printf("      --no-silent\n");
1180         printf("      --no-verify\n");
1181 }
1182
1183 void show_explain()
1184 {
1185         usage_header();
1186         usage_summary();
1187         printf("For encoding:\n");
1188         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1189         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1190         printf("For decoding, the reverse is true.\n");
1191         printf("\n");
1192         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1193         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1194         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1195         printf("instead of:\n");
1196         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1197         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1198         printf("WAVE/AIFF header contents when necessary.\n");
1199         printf("\n");
1200         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1201         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1202         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1203         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1204         printf("files using -fr.\n");
1205         printf("\n");
1206         printf("generic options:\n");
1207         printf("  -v, --version                Show the flac version number\n");
1208         printf("  -h, --help                   Show basic usage a list of all options\n");
1209         printf("  -H, --explain                Show this screen\n");
1210         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1211         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1212         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1213         printf("  -c, --stdout                 Write output to stdout\n");
1214         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1215         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1216         printf("                               changes the extension.  May only be used when\n");
1217         printf("                               encoding a single file.  May not be used in\n");
1218         printf("                               conjunction with --output-prefix.\n");
1219         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1220         printf("                               STRING.  This can be useful for encoding or\n");
1221         printf("                               decoding files to a different directory.  Make\n");
1222         printf("                               sure if your STRING is a path name that it ends\n");
1223         printf("                               with a '/' slash.\n");
1224         printf("      --delete-input-file      Automatically delete the input file after a\n");
1225         printf("                               successful encode or decode.  If there was an\n");
1226         printf("                               error (including a verify error) the input file\n");
1227         printf("                               is left intact.\n");
1228         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1229         printf("                               be used both for encoding and decoding.  The\n");
1230         printf("                               alternative form mm:ss.ss can be used to specify\n");
1231         printf("                               minutes, seconds, and fractions of a second.\n");
1232         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file@@@@\n");
1233         printf("analysis options:\n");
1234         printf("      --residual-text          Include residual signal in text output.  This\n");
1235         printf("                               will make the file very big, much larger than\n");
1236         printf("                               even the decoded file.\n");
1237         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1238         printf("                               of each subframe\n");
1239         printf("decoding options:\n");
1240         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1241         printf("                               and removes the partially decoded file if it\n");
1242         printf("                               encounters a bitstream error.  With -F, errors\n");
1243         printf("                               are still printed but flac will continue\n");
1244         printf("                               decoding to completion.  Note that errors may\n");
1245         printf("                               cause the decoded audio to be missing some\n");
1246         printf("                               samples or have silent sections.\n");
1247         printf("encoding options:\n");
1248         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1249         printf("                               output in parallel and comparing to the\n");
1250         printf("                               original\n");
1251 #ifdef FLAC__HAS_OGG
1252         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1253         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1254         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1255         printf("                               resulting file should have an '.ogg' extension\n");
1256         printf("                               and will still be decodable by flac.  When\n");
1257         printf("                               decoding, force the input to be treated as\n");
1258         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1259         printf("                               from stdin or when the filename does not end in\n");
1260         printf("                               '.ogg'.\n");
1261         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1262         printf("                               encoding and no serial number is given, flac\n");
1263         printf("                               uses '0'.  When decoding and no number is\n");
1264         printf("                               given, flac uses the serial number of the first\n");
1265         printf("                               page.\n");
1266 #endif
1267         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1268         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1269         printf("                               on sector boundaries.\n");
1270         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1271         printf("                               comments.  Title gains/peaks will be computed\n");
1272         printf("                               for each file, and an album gain/peak will be\n");
1273         printf("                               computed for all files.  All input files must\n");
1274         printf("                               have the same resolution, sample rate, and\n");
1275         printf("                               number of channels.  The sample rate must be\n");
1276         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1277         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1278         printf("                               few extra bytes in the PADDING block.\n");
1279         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1280         printf("                               a CUESHEET metadata block.  This option may only\n");
1281         printf("                               be used when encoding a single file.  A\n");
1282         printf("                               seekpoint will be added for each index point in\n");
1283         printf("                               the cuesheet to the SEEKTABLE unless\n");
1284         printf("                               --no-cued-seekpoints is specified.\n");
1285         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1286         printf("                               comment if necessary.  This option may appear\n");
1287         printf("                               more than once to add several comments.  NOTE:\n");
1288         printf("                               all tags will be added to all encoded files.\n");
1289         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1290         printf("       #  : a specific sample number for a seek point\n");
1291         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1292         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1293         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1294         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1295         printf("           ified union of all such values.\n");
1296         printf("     With no -S options, flac defaults to '-S 100x'.  Use -S- for no SEEKTABLE.\n");
1297         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1298         printf("           input size before starting.\n");
1299         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1300         printf("           either no seek point entered (if the input size is determinable\n");
1301         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1302         printf("           determinable)\n");
1303         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1304         printf("                               block of the given length (in bytes) after the\n");
1305         printf("                               STREAMINFO block.  This is useful if you plan\n");
1306         printf("                               to tag the file later with an APPLICATION\n");
1307         printf("                               block; instead of having to rewrite the entire\n");
1308         printf("                               file later just to insert your block, you can\n");
1309         printf("                               write directly over the PADDING block.  Note\n");
1310         printf("                               that the total length of the PADDING block will\n");
1311         printf("                               be 4 bytes longer than the length given because\n");
1312         printf("                               of the 4 metadata block header bytes.  You can\n");
1313         printf("                               force no PADDING block at all to be written with\n");
1314         printf("                               --no-padding, which is the default.\n");
1315         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1316         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1317         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1318         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1319         printf("                               used)\n");
1320         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1321         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1322         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1323         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1324         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1325         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1326         printf("                                     -5 is the default setting\n");
1327         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1328         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1329         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1330         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1331         printf("                                     (stereo only)\n");
1332         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1333         printf("                                     (stereo only)\n");
1334         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1335 #if 0
1336         /*@@@ deprecated: */
1337         printf("  -E, --escape-coding                Do escape coding in the entropy coder.\n");
1338         printf("                                     This causes the encoder to use an\n");
1339         printf("                                     unencoded representation of the residual\n");
1340         printf("                                     in a partition if it is smaller.  It\n");
1341         printf("                                     increases the runtime and usually results\n");
1342         printf("                                     in an improvement of less than 1%.\n");
1343 #endif
1344         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1345         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1346         printf("                                     quantization (expensive!); overrides -q;\n");
1347         printf("                                     does nothing if using -l 0\n");
1348         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1349         printf("                                     linear-predictor coefficients; 0 => let\n");
1350         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1351         printf("                                     default is -q 0)\n");
1352         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1353         printf("                                     (# is 0..16; min defaults to 0; the\n");
1354         printf("                                     default is -r 0; above 4 doesn't usually\n");
1355         printf("                                     help much)\n");
1356 #if 0
1357         /*@@@ deprecated: */
1358         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1359 #endif
1360         printf("format options:\n");
1361         printf("      --endian={big|little}    Set byte order for samples\n");
1362         printf("      --channels=#             Number of channels\n");
1363         printf("      --bps=#                  Number of bits per sample\n");
1364         printf("      --sample-rate=#          Sample rate in Hz\n");
1365         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1366         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1367         printf("                               option is not needed if the output filename (as\n");
1368         printf("                               set by -o) ends with .aiff; this option has no\n");
1369         printf("                               effect when encoding since input AIFF is auto-\n");
1370         printf("                               detected.\n");
1371         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1372         printf("                               decoding) to be treated as raw samples\n");
1373         printf("negative options:\n");
1374         printf("      --no-adaptive-mid-side\n");
1375         printf("      --no-decode-through-errors\n");
1376         printf("      --no-delete-input-file\n");
1377 #if 0
1378 /* @@@ deprecated: */
1379         printf("      --no-escape-coding\n");
1380 #endif
1381         printf("      --no-exhaustive-model-search\n");
1382         printf("      --no-lax\n");
1383         printf("      --no-mid-side\n");
1384 #ifdef FLAC__HAS_OGG
1385         printf("      --no-ogg\n");
1386 #endif
1387         printf("      --no-padding\n");
1388         printf("      --no-qlp-coeff-prec-search\n");
1389         printf("      --no-residual-gnuplot\n");
1390         printf("      --no-residual-text\n");
1391         printf("      --no-sector-align\n");
1392         printf("      --no-seektable\n");
1393         printf("      --no-silent\n");
1394         printf("      --no-verify\n");
1395 }
1396
1397 void
1398 format_mistake(const char *infilename, const char *wrong, const char *right)
1399 {
1400         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1401 }
1402
1403 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1404 {
1405         FILE *encode_infile;
1406         FLAC__byte lookahead[12];
1407         unsigned lookahead_length = 0;
1408         FileFormat fmt= RAW;
1409         int retval;
1410         long infilesize;
1411         encode_options_t common_options;
1412         const char *outfilename = get_encoded_outfilename(infilename);
1413
1414         if(0 == strcmp(infilename, "-")) {
1415                 infilesize = -1;
1416                 encode_infile = grabbag__file_get_binary_stdin();
1417         }
1418         else {
1419                 infilesize = grabbag__file_get_filesize(infilename);
1420                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1421                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1422                         return 1;
1423                 }
1424         }
1425
1426         if(!option_values.force_raw_format) {
1427                 /* first set format based on name */
1428                 if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1429                         fmt= WAV;
1430                 else if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1431                         fmt= AIF;
1432                 else if(strlen(infilename) > 4 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1433                         fmt= AIF;
1434
1435                 /* attempt to guess the file type based on the first 12 bytes */
1436                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1437                         if(fmt != RAW)
1438                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1439                         fmt= RAW;
1440                 }
1441                 else {
1442                         if(!strncmp(lookahead, "RIFF", 4) && !strncmp(lookahead+8, "WAVE", 4))
1443                                 fmt= WAV;
1444                         else if(!strncmp(lookahead, "FORM", 4) && !strncmp(lookahead+8, "AIFF", 4))
1445                                 fmt= AIF;
1446                         else {
1447                                 if(fmt != RAW)
1448                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1449                                 fmt= RAW;
1450                         }
1451                 }
1452         }
1453
1454         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1455                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1456                 return 1;
1457         }
1458
1459         if(fmt == RAW) {
1460                 if(option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0 || option_values.format_channels < 0 || option_values.format_bps < 0 || option_values.format_sample_rate < 0)
1461                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1462         }
1463
1464         if(encode_infile == stdin || option_values.force_to_stdout) {
1465                 if(option_values.replay_gain)
1466                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1467         }
1468
1469         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1470                 return usage_error("ERROR: invalid value for --skip\n");
1471
1472         if(!flac__utils_parse_skip_until_specification(option_values.until_specification, &common_options.until_specification)) //@@@@ more checks: no + without --skip, no - unless known total_samples_to_{en,de}code
1473                 return usage_error("ERROR: invalid value for --until\n");
1474         /* if there is no "--until" we want to default to "--until=-0" */
1475         if(0 == option_values.until_specification)
1476                 common_options.until_specification.is_relative = true;
1477
1478         common_options.verbose = option_values.verbose;
1479         common_options.verify = option_values.verify;
1480 #ifdef FLAC__HAS_OGG
1481         common_options.use_ogg = option_values.use_ogg;
1482         common_options.has_serial_number = option_values.has_serial_number;
1483         common_options.serial_number = option_values.serial_number;
1484 #endif
1485         common_options.lax = option_values.lax;
1486         common_options.do_mid_side = option_values.do_mid_side;
1487         common_options.loose_mid_side = option_values.loose_mid_side;
1488         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1489         common_options.do_escape_coding = option_values.do_escape_coding;
1490         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1491         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1492         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1493         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1494         common_options.max_lpc_order = option_values.max_lpc_order;
1495         common_options.blocksize = (unsigned)option_values.blocksize;
1496         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1497         common_options.padding = option_values.padding;
1498         common_options.requested_seek_points = option_values.requested_seek_points;
1499         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1500         common_options.cuesheet_filename = option_values.cuesheet_filename;
1501         common_options.cued_seekpoints = option_values.cued_seekpoints;
1502         common_options.is_first_file = is_first_file;
1503         common_options.is_last_file = is_last_file;
1504         common_options.align_reservoir = align_reservoir;
1505         common_options.align_reservoir_samples = &align_reservoir_samples;
1506         common_options.replay_gain = option_values.replay_gain;
1507         common_options.sector_align = option_values.sector_align;
1508         common_options.vorbis_comment = option_values.vorbis_comment;
1509         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1510         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1511         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1512
1513         if(fmt == RAW) {
1514                 raw_encode_options_t options;
1515
1516                 options.common = common_options;
1517                 options.is_big_endian = option_values.format_is_big_endian;
1518                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1519                 options.channels = option_values.format_channels;
1520                 options.bps = option_values.format_bps;
1521                 options.sample_rate = option_values.format_sample_rate;
1522
1523                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1524         }
1525         else {
1526                 wav_encode_options_t options;
1527
1528                 options.common = common_options;
1529
1530                 if(fmt == AIF)
1531                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1532                 else
1533                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1534         }
1535
1536         if(retval == 0 && strcmp(infilename, "-")) {
1537                 if(strcmp(outfilename, "-")) {
1538                         if(option_values.replay_gain) {
1539                                 float title_gain, title_peak;
1540                                 const char *error;
1541                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1542                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1543                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1544                                 }
1545                         }
1546                         grabbag__file_copy_metadata(infilename, outfilename);
1547                 }
1548                 if(option_values.delete_input)
1549                         unlink(infilename);
1550         }
1551
1552         return retval;
1553 }
1554
1555 int decode_file(const char *infilename)
1556 {
1557         int retval;
1558         FLAC__bool treat_as_ogg = false;
1559         decode_options_t common_options;
1560         const char *outfilename = get_decoded_outfilename(infilename);
1561
1562         if(!option_values.test_only && !option_values.analyze) {
1563                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1564                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1565         }
1566
1567         if(option_values.use_ogg)
1568                 treat_as_ogg = true;
1569         else if(0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1570                 treat_as_ogg = true;
1571         else
1572                 treat_as_ogg = false;
1573
1574 #ifndef FLAC__HAS_OGG
1575         if(treat_as_ogg) {
1576                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1577                 return 1;
1578         }
1579 #endif
1580
1581         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1582                 return usage_error("ERROR: invalid value for --skip\n");
1583
1584         if(!flac__utils_parse_skip_until_specification(option_values.until_specification, &common_options.until_specification)) //@@@@ more checks: no + without --skip, no - unless known total_samples_to_{en,de}code
1585                 return usage_error("ERROR: invalid value for --until\n");
1586         /* if there is no "--until" we want to default to "--until=-0" */
1587         if(0 == option_values.until_specification)
1588                 common_options.until_specification.is_relative = true;
1589
1590         common_options.verbose = option_values.verbose;
1591         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1592 #ifdef FLAC__HAS_OGG
1593         common_options.is_ogg = treat_as_ogg;
1594         common_options.use_first_serial_number = !option_values.has_serial_number;
1595         common_options.serial_number = option_values.serial_number;
1596 #endif
1597
1598         if(!option_values.force_raw_format) {
1599                 wav_decode_options_t options;
1600
1601                 options.common = common_options;
1602
1603                 if(
1604                         option_values.force_aiff_format ||
1605                         (strlen(outfilename) > 3 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1606                         (strlen(outfilename) > 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1607                 )
1608                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1609                 else
1610                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1611         }
1612         else {
1613                 raw_decode_options_t options;
1614
1615                 options.common = common_options;
1616                 options.is_big_endian = option_values.format_is_big_endian;
1617                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1618
1619                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1620         }
1621
1622         if(retval == 0 && strcmp(infilename, "-")) {
1623                 if(strcmp(outfilename, "-"))
1624                         grabbag__file_copy_metadata(infilename, outfilename);
1625                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1626                         unlink(infilename);
1627         }
1628
1629         return retval;
1630 }
1631
1632 const char *get_encoded_outfilename(const char *infilename)
1633 {
1634         if(0 == option_values.cmdline_forced_outfilename) {
1635                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1636
1637                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1638                         strcpy(buffer, "-");
1639                 }
1640                 else {
1641                         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1642                         char *p;
1643                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1644                         strcat(buffer, infilename);
1645                         if(0 == (p = strrchr(buffer, '.')))
1646                                 strcat(buffer, suffix);
1647                         else {
1648                                 if(0 == strcmp(p, suffix)) {
1649                                         strcpy(p, "_new");
1650                                         strcat(p, suffix);
1651                                 }
1652                                 else
1653                                         strcpy(p, suffix);
1654                         }
1655                 }
1656                 return buffer;
1657         }
1658         else
1659                 return option_values.cmdline_forced_outfilename;
1660 }
1661
1662 const char *get_decoded_outfilename(const char *infilename)
1663 {
1664         if(0 == option_values.cmdline_forced_outfilename) {
1665                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1666
1667                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1668                         strcpy(buffer, "-");
1669                 }
1670                 else {
1671                         static const char *suffixes[] = { ".wav", ".aiff", ".raw", ".ana" };
1672                         const char *suffix = suffixes[
1673                                 option_values.analyze? 3 :
1674                                 option_values.force_raw_format? 2 :
1675                                 option_values.force_aiff_format? 1 :
1676                                 0
1677                         ];
1678                         char *p;
1679                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1680                         strcat(buffer, infilename);
1681                         if(0 == (p = strrchr(buffer, '.')))
1682                                 strcat(buffer, suffix);
1683                         else {
1684                                 if(0 == strcmp(p, suffix)) {
1685                                         strcpy(p, "_new");
1686                                         strcat(p, suffix);
1687                                 }
1688                                 else
1689                                         strcpy(p, suffix);
1690                         }
1691                 }
1692                 return buffer;
1693         }
1694         else
1695                 return option_values.cmdline_forced_outfilename;
1696 }
1697
1698 void die(const char *message)
1699 {
1700         FLAC__ASSERT(0 != message);
1701         fprintf(stderr, "ERROR: %s\n", message);
1702         exit(1);
1703 }
1704
1705 char *local_strdup(const char *source)
1706 {
1707         char *ret;
1708         FLAC__ASSERT(0 != source);
1709         if(0 == (ret = strdup(source)))
1710                 die("out of memory during strdup()");
1711         return ret;
1712 }