src/flac/main.c

   1 /* flac - Command-line FLAC encoder/decoder
   2  * Copyright (C) 2000,2001,2002,2003  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         { "max-lpc-order", 1, 0, 'l' },
 139         { "mid-side", 0, 0, 'm' },
 140         { "adaptive-mid-side", 0, 0, 'M' },
 141         { "qlp-coeff-precision-search", 0, 0, 'p' },
 142         { "qlp-coeff-precision", 1, 0, 'q' },
 143         { "rice-partition-order", 1, 0, 'r' },
 144         { "endian", 1, 0, 0 },
 145         { "channels", 1, 0, 0 },
 146         { "bps", 1, 0, 0 },
 147         { "sample-rate", 1, 0, 0 },
 148         { "sign", 1, 0, 0 },
 149
 150         /*
 151          * analysis options
 152          */
 153         { "residual-gnu-plot", 0, 0, 0 },
 154         { "residual-text", 0, 0, 0 },
 155
 156         /*
 157          * negatives
 158          */
 159         { "no-decode-through-errors", 0, 0, 0 },
 160         { "no-silent", 0, 0, 0 },
 161         { "no-seektable", 0, 0, 0 },
 162         { "no-delete-input-file", 0, 0, 0 },
 163         { "no-replay-gain", 0, 0, 0 },
 164         { "no-sector-align", 0, 0, 0 },
 165         { "no-lax", 0, 0, 0 },
 166 #ifdef FLAC__HAS_OGG
 167         { "no-ogg", 0, 0, 0 },
 168 #endif
 169         { "no-exhaustive-model-search", 0, 0, 0 },
 170         { "no-mid-side", 0, 0, 0 },
 171         { "no-adaptive-mid-side", 0, 0, 0 },
 172         { "no-qlp-coeff-prec-search", 0, 0, 0 },
 173         { "no-padding", 0, 0, 0 },
 174         { "no-verify", 0, 0, 0 },
 175         { "no-residual-gnuplot", 0, 0, 0 },
 176         { "no-residual-text", 0, 0, 0 },
 177         /*
 178          * undocumented debugging options for the test suite
 179          */
 180         { "disable-constant-subframes", 0, 0, 0 },
 181         { "disable-fixed-subframes", 0, 0, 0 },
 182         { "disable-verbatim-subframes", 0, 0, 0 },
 183
 184         {0, 0, 0, 0}
 185 };
 186
 187
 188 /*
 189  * global to hold command-line option values
 190  */
 191
 192 static struct {
 193         FLAC__bool show_help;
 194         FLAC__bool show_explain;
 195         FLAC__bool show_version;
 196         FLAC__bool mode_decode;
 197         FLAC__bool verify;
 198         FLAC__bool verbose;
 199         FLAC__bool continue_through_decode_errors;
 200         FLAC__bool lax;
 201         FLAC__bool test_only;
 202         FLAC__bool analyze;
 203         FLAC__bool use_ogg;
 204         FLAC__bool has_serial_number; /* true iff --serial-number was used */
 205         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
 206         FLAC__bool do_mid_side;
 207         FLAC__bool loose_mid_side;
 208         FLAC__bool do_exhaustive_model_search;
 209         FLAC__bool do_escape_coding;
 210         FLAC__bool do_qlp_coeff_prec_search;
 211         FLAC__bool force_to_stdout;
 212         FLAC__bool force_aiff_format;
 213         FLAC__bool force_raw_format;
 214         FLAC__bool delete_input;
 215         FLAC__bool replay_gain;
 216         FLAC__bool sector_align;
 217         const char *cmdline_forced_outfilename;
 218         const char *output_prefix;
 219         analysis_options aopts;
 220         int padding;
 221         unsigned max_lpc_order;
 222         unsigned qlp_coeff_precision;
 223         const char *skip_specification;
 224         const char *until_specification;
 225         int format_is_big_endian;
 226         int format_is_unsigned_samples;
 227         int format_channels;
 228         int format_bps;
 229         int format_sample_rate;
 230         int blocksize;
 231         int min_residual_partition_order;
 232         int max_residual_partition_order;
 233         int rice_parameter_search_dist;
 234         char requested_seek_points[50000]; /* bad MAGIC NUMBER but buffer overflow is checked */
 235         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
 236         const char *cuesheet_filename;
 237         FLAC__bool cued_seekpoints;
 238
 239         unsigned num_files;
 240         char **filenames;
 241
 242         FLAC__StreamMetadata *vorbis_comment;
 243
 244         struct {
 245                 FLAC__bool disable_constant_subframes;
 246                 FLAC__bool disable_fixed_subframes;
 247                 FLAC__bool disable_verbatim_subframes;
 248         } debug;
 249 } option_values;
 250
 251
 252 /*
 253  * miscellaneous globals
 254  */
 255
 256 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
 257 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
 258 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
 259
 260
 261 int main(int argc, char *argv[])
 262 {
 263         int retval = 0;
 264
 265         setlocale(LC_ALL, "");
 266         if(!init_options()) {
 267                 fprintf(stderr, "ERROR: allocating memory\n");
 268                 retval = 1;
 269         }
 270         else {
 271                 if((retval = parse_options(argc, argv)) == 0)
 272                         retval = do_it();
 273         }
 274
 275         free_options();
 276
 277         return retval;
 278 }
 279
 280 int do_it()
 281 {
 282         int retval = 0;
 283
 284         if(option_values.show_version) {
 285                 show_version();
 286                 return 0;
 287         }
 288         else if(option_values.show_explain) {
 289                 show_explain();
 290                 return 0;
 291         }
 292         else if(option_values.show_help) {
 293                 show_help();
 294                 return 0;
 295         }
 296         else {
 297                 if(option_values.num_files == 0) {
 298                         short_usage();
 299                         return 0;
 300                 }
 301
 302                 /*
 303                  * tweak options; validate the values
 304                  */
 305                 if(!option_values.mode_decode) {
 306                         if(option_values.blocksize < 0) {
 307                                 if(option_values.max_lpc_order == 0)
 308                                         option_values.blocksize = 1152;
 309                                 else
 310                                         option_values.blocksize = 4608;
 311                         }
 312                         if(option_values.max_residual_partition_order < 0) {
 313                                 if(option_values.blocksize <= 1152)
 314                                         option_values.max_residual_partition_order = 2;
 315                                 else if(option_values.blocksize <= 2304)
 316                                         option_values.max_residual_partition_order = 3;
 317                                 else if(option_values.blocksize <= 4608)
 318                                         option_values.max_residual_partition_order = 3;
 319                                 else
 320                                         option_values.max_residual_partition_order = 4;
 321                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
 322                         }
 323                         if(option_values.rice_parameter_search_dist < 0) {
 324                                 option_values.rice_parameter_search_dist = 0;
 325                         }
 326                 }
 327                 else {
 328                         if(option_values.test_only) {
 329                                 if(0 != option_values.skip_specification)
 330                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
 331                                 if(0 != option_values.until_specification)
 332                                         return usage_error("ERROR: --until is not allowed in test mode\n");
 333                         }
 334                 }
 335
 336                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
 337
 338                 if(option_values.format_channels >= 0) {
 339                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
 340                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
 341                 }
 342                 if(option_values.format_bps >= 0) {
 343                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
 344                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
 345                 }
 346                 if(option_values.format_sample_rate >= 0) {
 347                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
 348                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
 349                 }
 350                 if(option_values.force_raw_format && option_values.force_aiff_format)
 351                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
 352                 if(option_values.mode_decode) {
 353                         if(!option_values.force_raw_format) {
 354                                 if(option_values.format_is_big_endian >= 0)
 355                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
 356                                 if(option_values.format_is_unsigned_samples >= 0)
 357                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
 358                         }
 359                         if(option_values.format_channels >= 0)
 360                                 return usage_error("ERROR: --channels not allowed with --decode\n");
 361                         if(option_values.format_bps >= 0)
 362                                 return usage_error("ERROR: --bps not allowed with --decode\n");
 363                         if(option_values.format_sample_rate >= 0)
 364                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
 365                 }
 366                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
 367                         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);
 368                 }
 369                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
 370                         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);
 371                 }
 372
 373                 if(option_values.sector_align) {
 374                         if(option_values.mode_decode)
 375                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
 376                         if(0 != option_values.skip_specification)
 377                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
 378                         if(0 != option_values.until_specification)
 379                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
 380                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
 381                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
 382                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
 383                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
 384                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
 385                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
 386                 }
 387                 if(option_values.replay_gain) {
 388                         if(option_values.force_to_stdout)
 389                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
 390                         if(option_values.mode_decode)
 391                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
 392                         if(option_values.format_channels > 2)
 393                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
 394                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
 395                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
 396                         /*
 397                          * We want to reserve padding space for the ReplayGain
 398                          * tags that we will set later, to avoid rewriting the
 399                          * whole file.
 400                          */
 401                         if(option_values.padding < 0) {
 402                                 fprintf(stderr, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
 403                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
 404                         }
 405                         else {
 406                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
 407                         }
 408                 }
 409                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
 410                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
 411                 }
 412                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
 413                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
 414                 }
 415                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
 416                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
 417                 }
 418         }
 419         if(option_values.verbose) {
 420                 fprintf(stderr, "\n");
 421                 fprintf(stderr, "flac %s, Copyright (C) 2000,2001,2002,2003 Josh Coalson\n", FLAC__VERSION_STRING);
 422                 fprintf(stderr, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
 423                 fprintf(stderr, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
 424
 425                 if(!option_values.mode_decode) {
 426                         char padopt[16];
 427                         if(option_values.padding < 0)
 428                                 strcpy(padopt, "-");
 429                         else
 430                                 sprintf(padopt, " %d", option_values.padding);
 431                         fprintf(stderr,
 432                                 "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
 433                                 option_values.delete_input?" --delete-input-file":"",
 434                                 option_values.sector_align?" --sector-align":"",
 435                                 option_values.use_ogg?" --ogg":"",
 436                                 option_values.lax?" --lax":"",
 437                                 padopt,
 438                                 (unsigned)option_values.blocksize,
 439                                 option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
 440                                 option_values.max_lpc_order,
 441                                 option_values.do_exhaustive_model_search?" -e":"",
 442                                 option_values.do_escape_coding?" -E":"",
 443                                 option_values.do_qlp_coeff_prec_search?" -p":"",
 444                                 option_values.qlp_coeff_precision,
 445                                 (unsigned)option_values.min_residual_partition_order,
 446                                 (unsigned)option_values.max_residual_partition_order,
 447                                 option_values.verify? " -V":""
 448                         );
 449                 }
 450         }
 451
 452         if(option_values.mode_decode) {
 453                 FLAC__bool first = true;
 454
 455                 if(option_values.num_files == 0) {
 456                         retval = decode_file("-");
 457                 }
 458                 else {
 459                         unsigned i;
 460                         if(option_values.num_files > 1)
 461                                 option_values.cmdline_forced_outfilename = 0;
 462                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 463                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 464                                         continue;
 465                                 retval |= decode_file(option_values.filenames[i]);
 466                                 first = false;
 467                         }
 468                 }
 469         }
 470         else { /* encode */
 471                 FLAC__bool first = true;
 472
 473                 if(option_values.num_files == 0) {
 474                         retval = encode_file("-", first, true);
 475                 }
 476                 else {
 477                         unsigned i;
 478                         if(option_values.num_files > 1)
 479                                 option_values.cmdline_forced_outfilename = 0;
 480                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 481                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 482                                         continue;
 483                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
 484                                 first = false;
 485                         }
 486                         if(option_values.replay_gain && retval == 0) {
 487                                 float album_gain, album_peak;
 488                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
 489                                 for(i = 0; i < option_values.num_files; i++) {
 490                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
 491                                         if(0 == strcmp(option_values.filenames[i], "-")) {
 492                                                 FLAC__ASSERT(0);
 493                                                 /* double protection */
 494                                                 fprintf(stderr, "internal error\n");
 495                                                 return 2;
 496                                         }
 497                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
 498                                                 fprintf(stderr, "%s: ERROR writing ReplayGain album tags\n", outfilename);
 499                                                 retval = 1;
 500                                         }
 501                                 }
 502                         }
 503                 }
 504         }
 505
 506         return retval;
 507 }
 508
 509 FLAC__bool init_options()
 510 {
 511         option_values.show_help = false;
 512         option_values.show_explain = false;
 513         option_values.mode_decode = false;
 514         option_values.verify = false;
 515         option_values.verbose = true;
 516         option_values.continue_through_decode_errors = false;
 517         option_values.lax = false;
 518         option_values.test_only = false;
 519         option_values.analyze = false;
 520         option_values.use_ogg = false;
 521         option_values.has_serial_number = false;
 522         option_values.serial_number = 0;
 523         option_values.do_mid_side = true;
 524         option_values.loose_mid_side = false;
 525         option_values.do_exhaustive_model_search = false;
 526         option_values.do_escape_coding = false;
 527         option_values.do_qlp_coeff_prec_search = false;
 528         option_values.force_to_stdout = false;
 529         option_values.force_aiff_format = false;
 530         option_values.force_raw_format = false;
 531         option_values.delete_input = false;
 532         option_values.replay_gain = false;
 533         option_values.sector_align = false;
 534         option_values.cmdline_forced_outfilename = 0;
 535         option_values.output_prefix = 0;
 536         option_values.aopts.do_residual_text = false;
 537         option_values.aopts.do_residual_gnuplot = false;
 538         option_values.padding = 4096;
 539         option_values.max_lpc_order = 8;
 540         option_values.qlp_coeff_precision = 0;
 541         option_values.skip_specification = 0;
 542         option_values.until_specification = 0;
 543         option_values.format_is_big_endian = -1;
 544         option_values.format_is_unsigned_samples = -1;
 545         option_values.format_channels = -1;
 546         option_values.format_bps = -1;
 547         option_values.format_sample_rate = -1;
 548         option_values.blocksize = -1;
 549         option_values.min_residual_partition_order = -1;
 550         option_values.max_residual_partition_order = -1;
 551         option_values.rice_parameter_search_dist = -1;
 552         option_values.requested_seek_points[0] = '\0';
 553         option_values.num_requested_seek_points = -1;
 554         option_values.cuesheet_filename = 0;
 555         option_values.cued_seekpoints = true;
 556
 557         option_values.num_files = 0;
 558         option_values.filenames = 0;
 559
 560         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
 561                 return false;
 562
 563         option_values.debug.disable_constant_subframes = false;
 564         option_values.debug.disable_fixed_subframes = false;
 565         option_values.debug.disable_verbatim_subframes = false;
 566
 567         return true;
 568 }
 569
 570 int parse_options(int argc, char *argv[])
 571 {
 572         int short_option;
 573         int option_index = 1;
 574         FLAC__bool had_error = false;
 575         const char *short_opts = "0123456789ab:cdeFhHl:mMo:pP:q:r:sS:tT:vV";
 576
 577         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
 578                 switch (short_option) {
 579                         case 0: /* long option with no equivalent short option */
 580                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
 581                                 break;
 582                         case '?':
 583                         case ':':
 584                                 had_error = true;
 585                                 break;
 586                         default: /* short option */
 587                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
 588                                 break;
 589                 }
 590         }
 591
 592         if(had_error) {
 593                 return 1;
 594         }
 595
 596         FLAC__ASSERT(share__optind <= argc);
 597
 598         option_values.num_files = argc - share__optind;
 599
 600         if(option_values.num_files > 0) {
 601                 unsigned i = 0;
 602                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
 603                         die("out of memory allocating space for file names list");
 604                 while(share__optind < argc)
 605                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
 606         }
 607
 608         return 0;
 609 }
 610
 611 int parse_option(int short_option, const char *long_option, const char *option_argument)
 612 {
 613         char *p;
 614
 615         if(short_option == 0) {
 616                 FLAC__ASSERT(0 != long_option);
 617                 if(0 == strcmp(long_option, "delete-input-file")) {
 618                         option_values.delete_input = true;
 619                 }
 620                 else if(0 == strcmp(long_option, "output-prefix")) {
 621                         FLAC__ASSERT(0 != option_argument);
 622                         option_values.output_prefix = option_argument;
 623                 }
 624                 else if(0 == strcmp(long_option, "skip")) {
 625                         FLAC__ASSERT(0 != option_argument);
 626                         option_values.skip_specification = option_argument;
 627                 }
 628                 else if(0 == strcmp(long_option, "until")) {
 629                         FLAC__ASSERT(0 != option_argument);
 630                         option_values.until_specification = option_argument;
 631                 }
 632                 else if(0 == strcmp(long_option, "cuesheet")) {
 633                         FLAC__ASSERT(0 != option_argument);
 634                         option_values.cuesheet_filename = option_argument;
 635                 }
 636                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
 637                         option_values.cued_seekpoints = false;
 638                 }
 639                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
 640                         option_values.lax = true;
 641                         option_values.do_exhaustive_model_search = true;
 642                         option_values.do_escape_coding = true;
 643                         option_values.do_mid_side = true;
 644                         option_values.loose_mid_side = false;
 645                         option_values.do_qlp_coeff_prec_search = true;
 646                         option_values.min_residual_partition_order = 0;
 647                         option_values.max_residual_partition_order = 16;
 648                         option_values.rice_parameter_search_dist = 0;
 649                         option_values.max_lpc_order = 32;
 650                 }
 651                 else if(0 == strcmp(long_option, "force-aiff-format")) {
 652                         option_values.force_aiff_format = true;
 653                 }
 654                 else if(0 == strcmp(long_option, "force-raw-format")) {
 655                         option_values.force_raw_format = true;
 656                 }
 657                 else if(0 == strcmp(long_option, "lax")) {
 658                         option_values.lax = true;
 659                 }
 660                 else if(0 == strcmp(long_option, "replay-gain")) {
 661                         option_values.replay_gain = true;
 662                 }
 663                 else if(0 == strcmp(long_option, "sector-align")) {
 664                         option_values.sector_align = true;
 665                 }
 666 #ifdef FLAC__HAS_OGG
 667                 else if(0 == strcmp(long_option, "ogg")) {
 668                         option_values.use_ogg = true;
 669                 }
 670                 else if(0 == strcmp(long_option, "serial-number")) {
 671                         option_values.has_serial_number = true;
 672                         option_values.serial_number = atol(option_argument);
 673                 }
 674 #endif
 675                 else if(0 == strcmp(long_option, "endian")) {
 676                         FLAC__ASSERT(0 != option_argument);
 677                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
 678                                 option_values.format_is_big_endian = true;
 679                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
 680                                 option_values.format_is_big_endian = false;
 681                         else
 682                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
 683                 }
 684                 else if(0 == strcmp(long_option, "channels")) {
 685                         FLAC__ASSERT(0 != option_argument);
 686                         option_values.format_channels = atoi(option_argument);
 687                 }
 688                 else if(0 == strcmp(long_option, "bps")) {
 689                         FLAC__ASSERT(0 != option_argument);
 690                         option_values.format_bps = atoi(option_argument);
 691                 }
 692                 else if(0 == strcmp(long_option, "sample-rate")) {
 693                         FLAC__ASSERT(0 != option_argument);
 694                         option_values.format_sample_rate = atoi(option_argument);
 695                 }
 696                 else if(0 == strcmp(long_option, "sign")) {
 697                         FLAC__ASSERT(0 != option_argument);
 698                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
 699                                 option_values.format_is_unsigned_samples = false;
 700                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
 701                                 option_values.format_is_unsigned_samples = true;
 702                         else
 703                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
 704                 }
 705                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
 706                         option_values.aopts.do_residual_gnuplot = true;
 707                 }
 708                 else if(0 == strcmp(long_option, "residual-text")) {
 709                         option_values.aopts.do_residual_text = true;
 710                 }
 711                 /*
 712                  * negatives
 713                  */
 714                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
 715                         option_values.continue_through_decode_errors = false;
 716                 }
 717                 else if(0 == strcmp(long_option, "no-silent")) {
 718                         option_values.verbose = true;
 719                 }
 720                 else if(0 == strcmp(long_option, "no-seektable")) {
 721                         option_values.num_requested_seek_points = 0;
 722                         option_values.requested_seek_points[0] = '\0';
 723                 }
 724                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
 725                         option_values.delete_input = false;
 726                 }
 727                 else if(0 == strcmp(long_option, "no-replay-gain")) {
 728                         option_values.replay_gain = false;
 729                 }
 730                 else if(0 == strcmp(long_option, "no-sector-align")) {
 731                         option_values.sector_align = false;
 732                 }
 733                 else if(0 == strcmp(long_option, "no-lax")) {
 734                         option_values.lax = false;
 735                 }
 736 #ifdef FLAC__HAS_OGG
 737                 else if(0 == strcmp(long_option, "no-ogg")) {
 738                         option_values.use_ogg = false;
 739                 }
 740 #endif
 741                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
 742                         option_values.do_exhaustive_model_search = false;
 743                 }
 744                 else if(0 == strcmp(long_option, "no-mid-side")) {
 745                         option_values.do_mid_side = option_values.loose_mid_side = false;
 746                 }
 747                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
 748                         option_values.loose_mid_side = option_values.do_mid_side = false;
 749                 }
 750                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
 751                         option_values.do_qlp_coeff_prec_search = false;
 752                 }
 753                 else if(0 == strcmp(long_option, "no-padding")) {
 754                         option_values.padding = -1;
 755                 }
 756                 else if(0 == strcmp(long_option, "no-verify")) {
 757                         option_values.verify = false;
 758                 }
 759                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
 760                         option_values.aopts.do_residual_gnuplot = false;
 761                 }
 762                 else if(0 == strcmp(long_option, "no-residual-text")) {
 763                         option_values.aopts.do_residual_text = false;
 764                 }
 765                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
 766                         option_values.debug.disable_constant_subframes = true;
 767                 }
 768                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
 769                         option_values.debug.disable_fixed_subframes = true;
 770                 }
 771                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
 772                         option_values.debug.disable_verbatim_subframes = true;
 773                 }
 774         }
 775         else {
 776                 const char *violation;
 777                 switch(short_option) {
 778                         case 'h':
 779                                 option_values.show_help = true;
 780                                 break;
 781                         case 'H':
 782                                 option_values.show_explain = true;
 783                                 break;
 784                         case 'v':
 785                                 option_values.show_version = true;
 786                                 break;
 787                         case 'd':
 788                                 option_values.mode_decode = true;
 789                                 break;
 790                         case 'a':
 791                                 option_values.mode_decode = true;
 792                                 option_values.analyze = true;
 793                                 break;
 794                         case 't':
 795                                 option_values.mode_decode = true;
 796                                 option_values.test_only = true;
 797                                 break;
 798                         case 'c':
 799                                 option_values.force_to_stdout = true;
 800                                 break;
 801                         case 's':
 802                                 option_values.verbose = false;
 803                                 break;
 804                         case 'o':
 805                                 FLAC__ASSERT(0 != option_argument);
 806                                 option_values.cmdline_forced_outfilename = option_argument;
 807                                 break;
 808                         case 'F':
 809                                 option_values.continue_through_decode_errors = true;
 810                                 break;
 811                         case 'T':
 812                                 FLAC__ASSERT(0 != option_argument);
 813                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
 814                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
 815                                 break;
 816                         case '0':
 817                                 option_values.do_exhaustive_model_search = false;
 818                                 option_values.do_escape_coding = false;
 819                                 option_values.do_mid_side = false;
 820                                 option_values.loose_mid_side = false;
 821                                 option_values.qlp_coeff_precision = 0;
 822                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 823                                 option_values.rice_parameter_search_dist = 0;
 824                                 option_values.max_lpc_order = 0;
 825                                 break;
 826                         case '1':
 827                                 option_values.do_exhaustive_model_search = false;
 828                                 option_values.do_escape_coding = false;
 829                                 option_values.do_mid_side = true;
 830                                 option_values.loose_mid_side = true;
 831                                 option_values.qlp_coeff_precision = 0;
 832                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 833                                 option_values.rice_parameter_search_dist = 0;
 834                                 option_values.max_lpc_order = 0;
 835                                 break;
 836                         case '2':
 837                                 option_values.do_exhaustive_model_search = false;
 838                                 option_values.do_escape_coding = false;
 839                                 option_values.do_mid_side = true;
 840                                 option_values.loose_mid_side = false;
 841                                 option_values.qlp_coeff_precision = 0;
 842                                 option_values.min_residual_partition_order = 0;
 843                                 option_values.max_residual_partition_order = 3;
 844                                 option_values.rice_parameter_search_dist = 0;
 845                                 option_values.max_lpc_order = 0;
 846                                 break;
 847                         case '3':
 848                                 option_values.do_exhaustive_model_search = false;
 849                                 option_values.do_escape_coding = false;
 850                                 option_values.do_mid_side = false;
 851                                 option_values.loose_mid_side = false;
 852                                 option_values.qlp_coeff_precision = 0;
 853                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 854                                 option_values.rice_parameter_search_dist = 0;
 855                                 option_values.max_lpc_order = 6;
 856                                 break;
 857                         case '4':
 858                                 option_values.do_exhaustive_model_search = false;
 859                                 option_values.do_escape_coding = false;
 860                                 option_values.do_mid_side = true;
 861                                 option_values.loose_mid_side = true;
 862                                 option_values.qlp_coeff_precision = 0;
 863                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 864                                 option_values.rice_parameter_search_dist = 0;
 865                                 option_values.max_lpc_order = 8;
 866                                 break;
 867                         case '5':
 868                                 option_values.do_exhaustive_model_search = false;
 869                                 option_values.do_escape_coding = false;
 870                                 option_values.do_mid_side = true;
 871                                 option_values.loose_mid_side = false;
 872                                 option_values.qlp_coeff_precision = 0;
 873                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 874                                 option_values.rice_parameter_search_dist = 0;
 875                                 option_values.max_lpc_order = 8;
 876                                 break;
 877                         case '6':
 878                                 option_values.do_exhaustive_model_search = false;
 879                                 option_values.do_escape_coding = false;
 880                                 option_values.do_mid_side = true;
 881                                 option_values.loose_mid_side = false;
 882                                 option_values.qlp_coeff_precision = 0;
 883                                 option_values.min_residual_partition_order = 0;
 884                                 option_values.max_residual_partition_order = 4;
 885                                 option_values.rice_parameter_search_dist = 0;
 886                                 option_values.max_lpc_order = 8;
 887                                 break;
 888                         case '7':
 889                                 option_values.do_exhaustive_model_search = true;
 890                                 option_values.do_escape_coding = false;
 891                                 option_values.do_mid_side = true;
 892                                 option_values.loose_mid_side = false;
 893                                 option_values.qlp_coeff_precision = 0;
 894                                 option_values.min_residual_partition_order = 0;
 895                                 option_values.max_residual_partition_order = 6;
 896                                 option_values.rice_parameter_search_dist = 0;
 897                                 option_values.max_lpc_order = 8;
 898                                 break;
 899                         case '8':
 900                                 option_values.do_exhaustive_model_search = true;
 901                                 option_values.do_escape_coding = false;
 902                                 option_values.do_mid_side = true;
 903                                 option_values.loose_mid_side = false;
 904                                 option_values.qlp_coeff_precision = 0;
 905                                 option_values.min_residual_partition_order = 0;
 906                                 option_values.max_residual_partition_order = 6;
 907                                 option_values.rice_parameter_search_dist = 0;
 908                                 option_values.max_lpc_order = 12;
 909                                 break;
 910                         case '9':
 911                                 return usage_error("ERROR: compression level '9' is reserved\n");
 912                         case 'V':
 913                                 option_values.verify = true;
 914                                 break;
 915                         case 'S':
 916                                 FLAC__ASSERT(0 != option_argument);
 917                                 if(option_values.num_requested_seek_points < 0)
 918                                         option_values.num_requested_seek_points = 0;
 919                                 option_values.num_requested_seek_points++;
 920                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
 921                                         return usage_error("ERROR: too many seekpoints requested\n");
 922                                 }
 923                                 else {
 924                                         strcat(option_values.requested_seek_points, option_argument);
 925                                         strcat(option_values.requested_seek_points, ";");
 926                                 }
 927                                 break;
 928                         case 'P':
 929                                 FLAC__ASSERT(0 != option_argument);
 930                                 option_values.padding = atoi(option_argument);
 931                                 if(option_values.padding < 0)
 932                                         return usage_error("ERROR: argument to -P must be >= 0\n");
 933                                 break;
 934                         case 'b':
 935                                 FLAC__ASSERT(0 != option_argument);
 936                                 option_values.blocksize = atoi(option_argument);
 937                                 break;
 938                         case 'e':
 939                                 option_values.do_exhaustive_model_search = true;
 940                                 break;
 941                         case 'E':
 942                                 option_values.do_escape_coding = true;
 943                                 break;
 944                         case 'l':
 945                                 FLAC__ASSERT(0 != option_argument);
 946                                 option_values.max_lpc_order = atoi(option_argument);
 947                                 break;
 948                         case 'm':
 949                                 option_values.do_mid_side = true;
 950                                 option_values.loose_mid_side = false;
 951                                 break;
 952                         case 'M':
 953                                 option_values.loose_mid_side = option_values.do_mid_side = true;
 954                                 break;
 955                         case 'p':
 956                                 option_values.do_qlp_coeff_prec_search = true;
 957                                 break;
 958                         case 'q':
 959                                 FLAC__ASSERT(0 != option_argument);
 960                                 option_values.qlp_coeff_precision = atoi(option_argument);
 961                                 break;
 962                         case 'r':
 963                                 FLAC__ASSERT(0 != option_argument);
 964                                 p = strchr(option_argument, ',');
 965                                 if(0 == p) {
 966                                         option_values.min_residual_partition_order = 0;
 967                                         option_values.max_residual_partition_order = atoi(option_argument);
 968                                 }
 969                                 else {
 970                                         option_values.min_residual_partition_order = atoi(option_argument);
 971                                         option_values.max_residual_partition_order = atoi(++p);
 972                                 }
 973                                 break;
 974                         case 'R':
 975                                 FLAC__ASSERT(0 != option_argument);
 976                                 option_values.rice_parameter_search_dist = atoi(option_argument);
 977                                 break;
 978                         default:
 979                                 FLAC__ASSERT(0);
 980                 }
 981         }
 982
 983         return 0;
 984 }
 985
 986 void free_options()
 987 {
 988         unsigned i;
 989         if(0 != option_values.filenames) {
 990                 for(i = 0; i < option_values.num_files; i++) {
 991                         if(0 != option_values.filenames[i])
 992                                 free(option_values.filenames[i]);
 993                 }
 994                 free(option_values.filenames);
 995         }
 996         if(0 != option_values.vorbis_comment)
 997                 FLAC__metadata_object_delete(option_values.vorbis_comment);
 998 }
 999
1000 int usage_error(const char *message, ...)
1001 {
1002         va_list args;
1003
1004         FLAC__ASSERT(0 != message);
1005
1006         va_start(args, message);
1007
1008         (void) vfprintf(stderr, message, args);
1009
1010         va_end(args);
1011
1012         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1013
1014         return 1;
1015 }
1016
1017 void show_version()
1018 {
1019         printf("flac %s\n", FLAC__VERSION_STRING);
1020 }
1021
1022 static void usage_header()
1023 {
1024         printf("===============================================================================\n");
1025         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1026         printf("Copyright (C) 2000,2001,2002,2003  Josh Coalson\n");
1027         printf("\n");
1028         printf("This program is free software; you can redistribute it and/or\n");
1029         printf("modify it under the terms of the GNU General Public License\n");
1030         printf("as published by the Free Software Foundation; either version 2\n");
1031         printf("of the License, or (at your option) any later version.\n");
1032         printf("\n");
1033         printf("This program is distributed in the hope that it will be useful,\n");
1034         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1035         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1036         printf("GNU General Public License for more details.\n");
1037         printf("\n");
1038         printf("You should have received a copy of the GNU General Public License\n");
1039         printf("along with this program; if not, write to the Free Software\n");
1040         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1041         printf("===============================================================================\n");
1042 }
1043
1044 static void usage_summary()
1045 {
1046         printf("Usage:\n");
1047         printf("\n");
1048         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1049         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1050         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1051         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1052         printf("\n");
1053 }
1054
1055 void short_usage()
1056 {
1057         usage_header();
1058         printf("\n");
1059         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1060         printf("instructions use 'flac --explain'\n");
1061         printf("\n");
1062         printf("To encode:\n");
1063         printf("  flac [-#] [INPUTFILE [...]]\n");
1064         printf("\n");
1065         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1066         printf("\n");
1067         printf("To decode:\n");
1068         printf("  flac -d [INPUTFILE [...]]\n");
1069         printf("\n");
1070         printf("To test:\n");
1071         printf("  flac -t [INPUTFILE [...]]\n");
1072 }
1073
1074 void show_help()
1075 {
1076         usage_header();
1077         usage_summary();
1078         printf("general options:\n");
1079         printf("  -v, --version                Show the flac version number\n");
1080         printf("  -h, --help                   Show this screen\n");
1081         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1082         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1083         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1084         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1085         printf("  -c, --stdout                 Write output to stdout\n");
1086         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1087         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1088         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1089         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1090         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1091         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1092 #ifdef FLAC__HAS_OGG
1093         printf("      --ogg                    Use Ogg as transport layer\n");
1094         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1095 #endif
1096         printf("analysis options:\n");
1097         printf("      --residual-text          Include residual signal in text output\n");
1098         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1099         printf("decoding options:\n");
1100         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1101         printf("encoding options:\n");
1102         printf("  -V, --verify                 Verify a correct encoding\n");
1103         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1104         printf("      --sector-align           Align multiple files on sector boundaries\n");
1105         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1106         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1107         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1108         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1109         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1110         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1111         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1112         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1113         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1114         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1115         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1116         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1117         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1118         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1119         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1120         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1121         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1122         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1123         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1124         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1125         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1126         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1127         printf("format options:\n");
1128         printf("      --endian={big|little}    Set byte order for samples\n");
1129         printf("      --channels=#             Number of channels\n");
1130         printf("      --bps=#                  Number of bits per sample\n");
1131         printf("      --sample-rate=#          Sample rate in Hz\n");
1132         printf("      --sign={signed|unsigned} Sign of samples\n");
1133         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1134         printf("      --force-raw-format       Treat input or output as raw samples\n");
1135         printf("negative options:\n");
1136         printf("      --no-adaptive-mid-side\n");
1137         printf("      --no-decode-through-errors\n");
1138         printf("      --no-delete-input-file\n");
1139         printf("      --no-exhaustive-model-search\n");
1140         printf("      --no-lax\n");
1141         printf("      --no-mid-side\n");
1142 #ifdef FLAC__HAS_OGG
1143         printf("      --no-ogg\n");
1144 #endif
1145         printf("      --no-padding\n");
1146         printf("      --no-qlp-coeff-prec-search\n");
1147         printf("      --no-replay-gain\n");
1148         printf("      --no-residual-gnuplot\n");
1149         printf("      --no-residual-text\n");
1150         printf("      --no-sector-align\n");
1151         printf("      --no-seektable\n");
1152         printf("      --no-silent\n");
1153         printf("      --no-verify\n");
1154 }
1155
1156 void show_explain()
1157 {
1158         usage_header();
1159         usage_summary();
1160         printf("For encoding:\n");
1161         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1162         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1163         printf("For decoding, the reverse is true.\n");
1164         printf("\n");
1165         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1166         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1167         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1168         printf("instead of:\n");
1169         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1170         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1171         printf("WAVE/AIFF header contents when necessary.\n");
1172         printf("\n");
1173         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1174         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1175         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1176         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1177         printf("files using -fr.\n");
1178         printf("\n");
1179         printf("general options:\n");
1180         printf("  -v, --version                Show the flac version number\n");
1181         printf("  -h, --help                   Show basic usage a list of all options\n");
1182         printf("  -H, --explain                Show this screen\n");
1183         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1184         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1185         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1186         printf("  -c, --stdout                 Write output to stdout\n");
1187         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1188         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1189         printf("                               changes the extension.  May only be used when\n");
1190         printf("                               encoding a single file.  May not be used in\n");
1191         printf("                               conjunction with --output-prefix.\n");
1192         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1193         printf("                               STRING.  This can be useful for encoding or\n");
1194         printf("                               decoding files to a different directory.  Make\n");
1195         printf("                               sure if your STRING is a path name that it ends\n");
1196         printf("                               with a '/' slash.\n");
1197         printf("      --delete-input-file      Automatically delete the input file after a\n");
1198         printf("                               successful encode or decode.  If there was an\n");
1199         printf("                               error (including a verify error) the input file\n");
1200         printf("                               is left intact.\n");
1201         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1202         printf("                               be used both for encoding and decoding.  The\n");
1203         printf("                               alternative form mm:ss.ss can be used to specify\n");
1204         printf("                               minutes, seconds, and fractions of a second.\n");
1205         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1206         printf("                               file.  The given sample number is not included\n");
1207         printf("                               in the decoded output.  The alternative form\n");
1208         printf("                               mm:ss.ss can be used to specify minutes,\n");
1209         printf("                               seconds, and fractions of a second.  If a `+'\n");
1210         printf("                               sign is at the beginning, the --until point is\n");
1211         printf("                               relative to the --skip point.  If a `-' sign is\n");
1212         printf("                               at the beginning, the --until point is relative\n");
1213         printf("                               to end of the audio.\n");
1214 #ifdef FLAC__HAS_OGG
1215         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1216         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1217         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1218         printf("                               resulting file should have an '.ogg' extension\n");
1219         printf("                               and will still be decodable by flac.  When\n");
1220         printf("                               decoding, force the input to be treated as\n");
1221         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1222         printf("                               from stdin or when the filename does not end in\n");
1223         printf("                               '.ogg'.\n");
1224         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1225         printf("                               encoding and no serial number is given, flac\n");
1226         printf("                               uses '0'.  When decoding and no number is\n");
1227         printf("                               given, flac uses the serial number of the first\n");
1228         printf("                               page.\n");
1229 #endif
1230         printf("analysis options:\n");
1231         printf("      --residual-text          Include residual signal in text output.  This\n");
1232         printf("                               will make the file very big, much larger than\n");
1233         printf("                               even the decoded file.\n");
1234         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1235         printf("                               of each subframe\n");
1236         printf("decoding options:\n");
1237         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1238         printf("                               and removes the partially decoded file if it\n");
1239         printf("                               encounters a bitstream error.  With -F, errors\n");
1240         printf("                               are still printed but flac will continue\n");
1241         printf("                               decoding to completion.  Note that errors may\n");
1242         printf("                               cause the decoded audio to be missing some\n");
1243         printf("                               samples or have silent sections.\n");
1244         printf("encoding options:\n");
1245         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1246         printf("                               output in parallel and comparing to the\n");
1247         printf("                               original\n");
1248         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1249         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1250         printf("                               on sector boundaries.\n");
1251         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1252         printf("                               comments.  Title gains/peaks will be computed\n");
1253         printf("                               for each file, and an album gain/peak will be\n");
1254         printf("                               computed for all files.  All input files must\n");
1255         printf("                               have the same resolution, sample rate, and\n");
1256         printf("                               number of channels.  The sample rate must be\n");
1257         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1258         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1259         printf("                               few extra bytes in the PADDING block.\n");
1260         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1261         printf("                               a CUESHEET metadata block.  This option may only\n");
1262         printf("                               be used when encoding a single file.  A\n");
1263         printf("                               seekpoint will be added for each index point in\n");
1264         printf("                               the cuesheet to the SEEKTABLE unless\n");
1265         printf("                               --no-cued-seekpoints is specified.\n");
1266         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1267         printf("                               comment if necessary.  This option may appear\n");
1268         printf("                               more than once to add several comments.  NOTE:\n");
1269         printf("                               all tags will be added to all encoded files.\n");
1270         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1271         printf("       #  : a specific sample number for a seek point\n");
1272         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1273         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1274         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1275         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1276         printf("           ified union of all such values.\n");
1277         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1278         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1279         printf("           input size before starting.\n");
1280         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1281         printf("           either no seek point entered (if the input size is determinable\n");
1282         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1283         printf("           determinable)\n");
1284         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1285         printf("                               block of the given length (in bytes) after the\n");
1286         printf("                               STREAMINFO block.  This is useful if you plan\n");
1287         printf("                               to tag the file later with an APPLICATION\n");
1288         printf("                               block; instead of having to rewrite the entire\n");
1289         printf("                               file later just to insert your block, you can\n");
1290         printf("                               write directly over the PADDING block.  Note\n");
1291         printf("                               that the total length of the PADDING block will\n");
1292         printf("                               be 4 bytes longer than the length given because\n");
1293         printf("                               of the 4 metadata block header bytes.  You can\n");
1294         printf("                               force no PADDING block at all to be written with\n");
1295         printf("                               --no-padding.  The encoder writes a PADDING\n");
1296         printf("                               block of 4096 bytes by default.\n");
1297         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1298         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1299         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1300         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1301         printf("                               used)\n");
1302         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1303         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1304         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1305         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1306         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1307         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1308         printf("                                     -5 is the default setting\n");
1309         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1310         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1311         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1312         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1313         printf("                                     (stereo only)\n");
1314         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1315         printf("                                     (stereo only)\n");
1316         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1317         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1318         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1319         printf("                                     quantization (expensive!); overrides -q;\n");
1320         printf("                                     does nothing if using -l 0\n");
1321         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1322         printf("                                     linear-predictor coefficients; 0 => let\n");
1323         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1324         printf("                                     default is -q 0)\n");
1325         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1326         printf("                                     (# is 0..16; min defaults to 0; the\n");
1327         printf("                                     default is -r 0; above 4 doesn't usually\n");
1328         printf("                                     help much)\n");
1329         printf("format options:\n");
1330         printf("      --endian={big|little}    Set byte order for samples\n");
1331         printf("      --channels=#             Number of channels\n");
1332         printf("      --bps=#                  Number of bits per sample\n");
1333         printf("      --sample-rate=#          Sample rate in Hz\n");
1334         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1335         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1336         printf("                               option is not needed if the output filename (as\n");
1337         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1338         printf("                               has no effect when encoding since input AIFF is\n");
1339         printf("                               auto-detected.\n");
1340         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1341         printf("                               decoding) to be treated as raw samples\n");
1342         printf("negative options:\n");
1343         printf("      --no-adaptive-mid-side\n");
1344         printf("      --no-decode-through-errors\n");
1345         printf("      --no-delete-input-file\n");
1346         printf("      --no-exhaustive-model-search\n");
1347         printf("      --no-lax\n");
1348         printf("      --no-mid-side\n");
1349 #ifdef FLAC__HAS_OGG
1350         printf("      --no-ogg\n");
1351 #endif
1352         printf("      --no-padding\n");
1353         printf("      --no-qlp-coeff-prec-search\n");
1354         printf("      --no-residual-gnuplot\n");
1355         printf("      --no-residual-text\n");
1356         printf("      --no-sector-align\n");
1357         printf("      --no-seektable\n");
1358         printf("      --no-silent\n");
1359         printf("      --no-verify\n");
1360 }
1361
1362 void
1363 format_mistake(const char *infilename, const char *wrong, const char *right)
1364 {
1365         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1366 }
1367
1368 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1369 {
1370         FILE *encode_infile;
1371         FLAC__byte lookahead[12];
1372         unsigned lookahead_length = 0;
1373         FileFormat fmt= RAW;
1374         int retval;
1375         long infilesize;
1376         encode_options_t common_options;
1377         const char *outfilename = get_encoded_outfilename(infilename);
1378
1379         if(0 == strcmp(infilename, "-")) {
1380                 infilesize = -1;
1381                 encode_infile = grabbag__file_get_binary_stdin();
1382         }
1383         else {
1384                 infilesize = grabbag__file_get_filesize(infilename);
1385                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1386                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1387                         return 1;
1388                 }
1389         }
1390
1391         if(!option_values.force_raw_format) {
1392                 /* first set format based on name */
1393                 if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1394                         fmt= WAV;
1395                 else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1396                         fmt= AIF;
1397                 else if(strlen(infilename) >= 5 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1398                         fmt= AIF;
1399
1400                 /* attempt to guess the file type based on the first 12 bytes */
1401                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1402                         if(fmt != RAW)
1403                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1404                         fmt= RAW;
1405                 }
1406                 else {
1407                         if(!strncmp(lookahead, "RIFF", 4) && !strncmp(lookahead+8, "WAVE", 4))
1408                                 fmt= WAV;
1409                         else if(!strncmp(lookahead, "FORM", 4) && !strncmp(lookahead+8, "AIFF", 4))
1410                                 fmt= AIF;
1411                         else {
1412                                 if(fmt != RAW)
1413                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1414                                 fmt= RAW;
1415                         }
1416                 }
1417         }
1418
1419         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1420                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1421                 return 1;
1422         }
1423
1424         if(fmt == RAW) {
1425                 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)
1426                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1427         }
1428
1429         if(encode_infile == stdin || option_values.force_to_stdout) {
1430                 if(option_values.replay_gain)
1431                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1432         }
1433
1434         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1435                 return usage_error("ERROR: invalid value for --skip\n");
1436
1437         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 */
1438                 return usage_error("ERROR: invalid value for --until\n");
1439         /* if there is no "--until" we want to default to "--until=-0" */
1440         if(0 == option_values.until_specification)
1441                 common_options.until_specification.is_relative = true;
1442
1443         common_options.verbose = option_values.verbose;
1444         common_options.verify = option_values.verify;
1445 #ifdef FLAC__HAS_OGG
1446         common_options.use_ogg = option_values.use_ogg;
1447         common_options.has_serial_number = option_values.has_serial_number;
1448         common_options.serial_number = option_values.serial_number;
1449 #endif
1450         common_options.lax = option_values.lax;
1451         common_options.do_mid_side = option_values.do_mid_side;
1452         common_options.loose_mid_side = option_values.loose_mid_side;
1453         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1454         common_options.do_escape_coding = option_values.do_escape_coding;
1455         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1456         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1457         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1458         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1459         common_options.max_lpc_order = option_values.max_lpc_order;
1460         common_options.blocksize = (unsigned)option_values.blocksize;
1461         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1462         common_options.padding = option_values.padding;
1463         common_options.requested_seek_points = option_values.requested_seek_points;
1464         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1465         common_options.cuesheet_filename = option_values.cuesheet_filename;
1466         common_options.cued_seekpoints = option_values.cued_seekpoints;
1467         common_options.is_first_file = is_first_file;
1468         common_options.is_last_file = is_last_file;
1469         common_options.align_reservoir = align_reservoir;
1470         common_options.align_reservoir_samples = &align_reservoir_samples;
1471         common_options.replay_gain = option_values.replay_gain;
1472         common_options.sector_align = option_values.sector_align;
1473         common_options.vorbis_comment = option_values.vorbis_comment;
1474         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1475         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1476         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1477
1478         if(fmt == RAW) {
1479                 raw_encode_options_t options;
1480
1481                 options.common = common_options;
1482                 options.is_big_endian = option_values.format_is_big_endian;
1483                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1484                 options.channels = option_values.format_channels;
1485                 options.bps = option_values.format_bps;
1486                 options.sample_rate = option_values.format_sample_rate;
1487
1488                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1489         }
1490         else {
1491                 wav_encode_options_t options;
1492
1493                 options.common = common_options;
1494
1495                 if(fmt == AIF)
1496                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1497                 else
1498                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1499         }
1500
1501         if(retval == 0 && strcmp(infilename, "-")) {
1502                 if(strcmp(outfilename, "-")) {
1503                         if(option_values.replay_gain) {
1504                                 float title_gain, title_peak;
1505                                 const char *error;
1506                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1507                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1508                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1509                                 }
1510                         }
1511                         grabbag__file_copy_metadata(infilename, outfilename);
1512                 }
1513                 if(option_values.delete_input)
1514                         unlink(infilename);
1515         }
1516
1517         return retval;
1518 }
1519
1520 int decode_file(const char *infilename)
1521 {
1522         int retval;
1523         FLAC__bool treat_as_ogg = false;
1524         decode_options_t common_options;
1525         const char *outfilename = get_decoded_outfilename(infilename);
1526
1527         if(!option_values.test_only && !option_values.analyze) {
1528                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1529                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1530         }
1531
1532         if(option_values.use_ogg)
1533                 treat_as_ogg = true;
1534         else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1535                 treat_as_ogg = true;
1536         else
1537                 treat_as_ogg = false;
1538
1539 #ifndef FLAC__HAS_OGG
1540         if(treat_as_ogg) {
1541                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1542                 return 1;
1543         }
1544 #endif
1545
1546         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1547                 return usage_error("ERROR: invalid value for --skip\n");
1548
1549         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 */
1550                 return usage_error("ERROR: invalid value for --until\n");
1551         /* if there is no "--until" we want to default to "--until=-0" */
1552         if(0 == option_values.until_specification)
1553                 common_options.until_specification.is_relative = true;
1554
1555         common_options.verbose = option_values.verbose;
1556         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1557 #ifdef FLAC__HAS_OGG
1558         common_options.is_ogg = treat_as_ogg;
1559         common_options.use_first_serial_number = !option_values.has_serial_number;
1560         common_options.serial_number = option_values.serial_number;
1561 #endif
1562
1563         if(!option_values.force_raw_format) {
1564                 wav_decode_options_t options;
1565
1566                 options.common = common_options;
1567
1568                 if(
1569                         option_values.force_aiff_format ||
1570                         (strlen(outfilename) >= 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1571                         (strlen(outfilename) >= 5 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1572                 )
1573                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1574                 else
1575                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1576         }
1577         else {
1578                 raw_decode_options_t options;
1579
1580                 options.common = common_options;
1581                 options.is_big_endian = option_values.format_is_big_endian;
1582                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1583
1584                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1585         }
1586
1587         if(retval == 0 && strcmp(infilename, "-")) {
1588                 if(strcmp(outfilename, "-"))
1589                         grabbag__file_copy_metadata(infilename, outfilename);
1590                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1591                         unlink(infilename);
1592         }
1593
1594         return retval;
1595 }
1596
1597 const char *get_encoded_outfilename(const char *infilename)
1598 {
1599         if(0 == option_values.cmdline_forced_outfilename) {
1600                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1601
1602                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1603                         strcpy(buffer, "-");
1604                 }
1605                 else {
1606                         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1607                         char *p;
1608                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1609                         strcat(buffer, infilename);
1610                         if(0 == (p = strrchr(buffer, '.')))
1611                                 strcat(buffer, suffix);
1612                         else {
1613                                 if(0 == strcmp(p, suffix)) {
1614                                         strcpy(p, "_new");
1615                                         strcat(p, suffix);
1616                                 }
1617                                 else
1618                                         strcpy(p, suffix);
1619                         }
1620                 }
1621                 return buffer;
1622         }
1623         else
1624                 return option_values.cmdline_forced_outfilename;
1625 }
1626
1627 const char *get_decoded_outfilename(const char *infilename)
1628 {
1629         if(0 == option_values.cmdline_forced_outfilename) {
1630                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1631
1632                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1633                         strcpy(buffer, "-");
1634                 }
1635                 else {
1636                         static const char *suffixes[] = { ".wav", ".aif", ".raw", ".ana" };
1637                         const char *suffix = suffixes[
1638                                 option_values.analyze? 3 :
1639                                 option_values.force_raw_format? 2 :
1640                                 option_values.force_aiff_format? 1 :
1641                                 0
1642                         ];
1643                         char *p;
1644                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1645                         strcat(buffer, infilename);
1646                         if(0 == (p = strrchr(buffer, '.')))
1647                                 strcat(buffer, suffix);
1648                         else {
1649                                 if(0 == strcmp(p, suffix)) {
1650                                         strcpy(p, "_new");
1651                                         strcat(p, suffix);
1652                                 }
1653                                 else
1654                                         strcpy(p, suffix);
1655                         }
1656                 }
1657                 return buffer;
1658         }
1659         else
1660                 return option_values.cmdline_forced_outfilename;
1661 }
1662
1663 void die(const char *message)
1664 {
1665         FLAC__ASSERT(0 != message);
1666         fprintf(stderr, "ERROR: %s\n", message);
1667         exit(1);
1668 }
1669
1670 char *local_strdup(const char *source)
1671 {
1672         char *ret;
1673         FLAC__ASSERT(0 != source);
1674         if(0 == (ret = strdup(source)))
1675                 die("out of memory during strdup()");
1676         return ret;
1677 }