src/flac/main.c

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