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/file_utils.h"
  38 #include "share/replaygain.h"
  39 #include "analyze.h"
  40 #include "decode.h"
  41 #include "encode.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  * FLAC__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 FLAC__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
  99         /*
 100          * decoding options
 101          */
 102         { "decode-through-errors", 0, 0, 'F' },
 103
 104         /*
 105          * encoding options
 106          */
 107         { "tag", 1, 0, 'T' },
 108         { "compression-level-0", 0, 0, '0' },
 109         { "compression-level-1", 0, 0, '1' },
 110         { "compression-level-2", 0, 0, '2' },
 111         { "compression-level-3", 0, 0, '3' },
 112         { "compression-level-4", 0, 0, '4' },
 113         { "compression-level-5", 0, 0, '5' },
 114         { "compression-level-6", 0, 0, '6' },
 115         { "compression-level-7", 0, 0, '7' },
 116         { "compression-level-8", 0, 0, '8' },
 117         { "compression-level-9", 0, 0, '9' },
 118         { "best", 0, 0, '8' },
 119         { "fast", 0, 0, '0' },
 120         { "super-secret-impractical-compression-level", 0, 0, 0 },
 121         { "verify", 0, 0, 'V' },
 122         { "force-raw-format", 0, 0, 0 },
 123         { "lax", 0, 0, 0 },
 124         { "replay-gain", 0, 0, 0 },
 125         { "sector-align", 0, 0, 0 },
 126         { "seekpoint", 1, 0, 'S' },
 127         { "padding", 1, 0, 'P' },
 128 #ifdef FLAC__HAS_OGG
 129         { "ogg", 0, 0, 0 },
 130         { "serial-number", 1, 0, 0 },
 131 #endif
 132         { "blocksize", 1, 0, 'b' },
 133         { "exhaustive-model-search", 0, 0, 'e' },
 134 #if 0
 135         /* @@@ deprecated: */
 136         { "escape-coding", 0, 0, 'E' },
 137 #endif
 138         { "max-lpc-order", 1, 0, 'l' },
 139         { "mid-side", 0, 0, 'm' },
 140         { "adaptive-mid-side", 0, 0, 'M' },
 141         { "qlp-coeff-precision-search", 0, 0, 'p' },
 142         { "qlp-coeff-precision", 1, 0, 'q' },
 143         { "rice-partition-order", 1, 0, 'r' },
 144 #if 0
 145         /* @@@ deprecated: */
 146         { "rice-parameter-search-distance", 1, 0, 'R' },
 147 #endif
 148         { "endian", 1, 0, 0 },
 149         { "channels", 1, 0, 0 },
 150         { "bps", 1, 0, 0 },
 151         { "sample-rate", 1, 0, 0 },
 152         { "sign", 1, 0, 0 },
 153
 154         /*
 155          * analysis options
 156          */
 157         { "residual-gnu-plot", 0, 0, 0 },
 158         { "residual-text", 0, 0, 0 },
 159
 160         /*
 161          * negatives
 162          */
 163         { "no-decode-through-errors", 0, 0, 0 },
 164         { "no-silent", 0, 0, 0 },
 165         { "no-seektable", 0, 0, 0 },
 166         { "no-delete-input-file", 0, 0, 0 },
 167         { "no-replay-gain", 0, 0, 0 },
 168         { "no-sector-align", 0, 0, 0 },
 169         { "no-lax", 0, 0, 0 },
 170 #ifdef FLAC__HAS_OGG
 171         { "no-ogg", 0, 0, 0 },
 172 #endif
 173         { "no-exhaustive-model-search", 0, 0, 0 },
 174 #if 0
 175         /* @@@ deprecated: */
 176         { "no-escape-coding", 0, 0, 0 },
 177 #endif
 178         { "no-mid-side", 0, 0, 0 },
 179         { "no-adaptive-mid-side", 0, 0, 0 },
 180         { "no-qlp-coeff-prec-search", 0, 0, 0 },
 181         { "no-padding", 0, 0, 0 },
 182         { "no-verify", 0, 0, 0 },
 183         { "no-residual-gnuplot", 0, 0, 0 },
 184         { "no-residual-text", 0, 0, 0 },
 185         /*
 186          * undocumented debugging options for the test suite
 187          */
 188         { "disable-constant-subframes", 0, 0, 0 },
 189         { "disable-fixed-subframes", 0, 0, 0 },
 190         { "disable-verbatim-subframes", 0, 0, 0 },
 191
 192         {0, 0, 0, 0}
 193 };
 194
 195
 196 /*
 197  * global to hold command-line option values
 198  */
 199
 200 static struct {
 201         FLAC__bool show_help;
 202         FLAC__bool show_explain;
 203         FLAC__bool show_version;
 204         FLAC__bool mode_decode;
 205         FLAC__bool verify;
 206         FLAC__bool verbose;
 207         FLAC__bool continue_through_decode_errors;
 208         FLAC__bool lax;
 209         FLAC__bool test_only;
 210         FLAC__bool analyze;
 211         FLAC__bool use_ogg;
 212         FLAC__bool has_serial_number; /* true iff --serial-number was used */
 213         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
 214         FLAC__bool do_mid_side;
 215         FLAC__bool loose_mid_side;
 216         FLAC__bool do_exhaustive_model_search;
 217         FLAC__bool do_escape_coding;
 218         FLAC__bool do_qlp_coeff_prec_search;
 219         FLAC__bool force_to_stdout;
 220         FLAC__bool force_raw_format;
 221         FLAC__bool delete_input;
 222         FLAC__bool replay_gain;
 223         FLAC__bool sector_align;
 224         const char *cmdline_forced_outfilename;
 225         const char *output_prefix;
 226         analysis_options aopts;
 227         int padding;
 228         unsigned max_lpc_order;
 229         unsigned qlp_coeff_precision;
 230         FLAC__uint64 skip;
 231         int format_is_big_endian;
 232         int format_is_unsigned_samples;
 233         int format_channels;
 234         int format_bps;
 235         int format_sample_rate;
 236         int blocksize;
 237         int min_residual_partition_order;
 238         int max_residual_partition_order;
 239         int rice_parameter_search_dist;
 240         char requested_seek_points[50000]; /* @@@ bad MAGIC NUMBER */
 241         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
 242
 243         unsigned num_files;
 244         char **filenames;
 245
 246         FLAC__StreamMetadata *vorbis_comment;
 247
 248         struct {
 249                 FLAC__bool disable_constant_subframes;
 250                 FLAC__bool disable_fixed_subframes;
 251                 FLAC__bool disable_verbatim_subframes;
 252         } debug;
 253 } option_values;
 254
 255
 256 /*
 257  * miscellaneous globals
 258  */
 259
 260 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
 261 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
 262 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
 263
 264
 265 int main(int argc, char *argv[])
 266 {
 267         int retval = 0;
 268
 269         setlocale(LC_ALL, "");
 270         if(!init_options()) {
 271                 fprintf(stderr, "ERROR: allocating memory\n");
 272                 retval = 1;
 273         }
 274         else {
 275                 if((retval = parse_options(argc, argv)) == 0)
 276                         retval = do_it();
 277         }
 278
 279         free_options();
 280
 281         return retval;
 282 }
 283
 284 int do_it()
 285 {
 286         int retval = 0;
 287
 288         if(option_values.show_version) {
 289                 show_version();
 290                 return 0;
 291         }
 292         else if(option_values.show_explain) {
 293                 show_explain();
 294                 return 0;
 295         }
 296         else if(option_values.show_help) {
 297                 show_help();
 298                 return 0;
 299         }
 300         else {
 301                 if(option_values.num_files == 0) {
 302                         short_usage();
 303                         return 0;
 304                 }
 305
 306                 /*
 307                  * tweak options; validate the values
 308                  */
 309                 if(!option_values.mode_decode) {
 310                         if(option_values.blocksize < 0) {
 311                                 if(option_values.max_lpc_order == 0)
 312                                         option_values.blocksize = 1152;
 313                                 else
 314                                         option_values.blocksize = 4608;
 315                         }
 316                         if(option_values.max_residual_partition_order < 0) {
 317                                 if(option_values.blocksize <= 1152)
 318                                         option_values.max_residual_partition_order = 2;
 319                                 else if(option_values.blocksize <= 2304)
 320                                         option_values.max_residual_partition_order = 3;
 321                                 else if(option_values.blocksize <= 4608)
 322                                         option_values.max_residual_partition_order = 3;
 323                                 else
 324                                         option_values.max_residual_partition_order = 4;
 325                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
 326                         }
 327                         if(option_values.rice_parameter_search_dist < 0) {
 328                                 option_values.rice_parameter_search_dist = 0;
 329                         }
 330                 }
 331                 else {
 332                         if(option_values.test_only) {
 333                                 if(option_values.skip > 0)
 334                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
 335                         }
 336                 }
 337
 338                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
 339
 340                 if(option_values.format_channels >= 0) {
 341                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
 342                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
 343                 }
 344                 if(option_values.format_bps >= 0) {
 345                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
 346                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
 347                 }
 348                 if(option_values.format_sample_rate >= 0) {
 349                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
 350                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
 351                 }
 352                 if(option_values.mode_decode) {
 353                         if(!option_values.force_raw_format) {
 354                                 if(option_values.format_is_big_endian >= 0)
 355                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
 356                                 if(option_values.format_is_unsigned_samples >= 0)
 357                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
 358                         }
 359                         if(option_values.format_channels >= 0)
 360                                 return usage_error("ERROR: --channels not allowed with --decode\n");
 361                         if(option_values.format_bps >= 0)
 362                                 return usage_error("ERROR: --bps not allowed with --decode\n");
 363                         if(option_values.format_sample_rate >= 0)
 364                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
 365                 }
 366                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
 367                         return usage_error("ERROR: invalid blocksize '%u', must be >= %u and <= %u\n", (unsigned)option_values.blocksize, FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE);
 368                 }
 369                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
 370                         return usage_error("ERROR: invalid value '%u' for qlp coeff precision, must be 0 or >= %u\n", option_values.qlp_coeff_precision, FLAC__MIN_QLP_COEFF_PRECISION);
 371                 }
 372
 373                 if(option_values.sector_align) {
 374                         if(option_values.mode_decode)
 375                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
 376                         if(option_values.skip > 0)
 377                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
 378                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
 379                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
 380                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
 381                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
 382                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
 383                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
 384                 }
 385                 if(option_values.replay_gain) {
 386                         if(option_values.force_to_stdout)
 387                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
 388                         if(option_values.mode_decode)
 389                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
 390                         if(option_values.skip > 0)
 391                                 return usage_error("ERROR: --replay-gain not allowed with --skip\n");
 392                         if(option_values.format_channels > 2)
 393                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
 394                         if(option_values.format_sample_rate >= 0 && !FLAC__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
 395                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
 396                         /*
 397                          * We want to reserve padding space for the ReplayGain
 398                          * tags that we will set later, to avoid rewriting the
 399                          * whole file.
 400                          */
 401                         if(option_values.padding < 0) {
 402                                 fprintf(stderr, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
 403                                 option_values.padding = FLAC__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
 404                         }
 405                         else {
 406                                 option_values.padding += FLAC__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
 407                         }
 408                 }
 409                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
 410                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
 411                 }
 412                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
 413                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
 414                 }
 415         }
 416         if(option_values.verbose) {
 417                 fprintf(stderr, "\n");
 418                 fprintf(stderr, "flac %s, Copyright (C) 2000,2001,2002 Josh Coalson\n", FLAC__VERSION_STRING);
 419                 fprintf(stderr, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
 420                 fprintf(stderr, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
 421
 422                 if(!option_values.mode_decode) {
 423                         char padopt[16];
 424                         if(option_values.padding < 0)
 425                                 strcpy(padopt, "-");
 426                         else
 427                                 sprintf(padopt, " %d", option_values.padding);
 428                         fprintf(stderr,
 429                                 "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
 430                                 option_values.delete_input?" --delete-input-file":"",
 431                                 option_values.sector_align?" --sector-align":"",
 432                                 option_values.use_ogg?" --ogg":"",
 433                                 option_values.lax?" --lax":"",
 434                                 padopt,
 435                                 (unsigned)option_values.blocksize,
 436                                 option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
 437                                 option_values.max_lpc_order,
 438                                 option_values.do_exhaustive_model_search?" -e":"",
 439                                 option_values.do_escape_coding?" -E":"",
 440                                 option_values.do_qlp_coeff_prec_search?" -p":"",
 441                                 option_values.qlp_coeff_precision,
 442                                 (unsigned)option_values.min_residual_partition_order,
 443                                 (unsigned)option_values.max_residual_partition_order,
 444                                 option_values.verify? " -V":""
 445                         );
 446                 }
 447         }
 448
 449         if(option_values.mode_decode) {
 450                 FLAC__bool first = true;
 451
 452                 if(option_values.num_files == 0) {
 453                         retval = decode_file("-");
 454                 }
 455                 else {
 456                         unsigned i;
 457                         if(option_values.num_files > 1)
 458                                 option_values.cmdline_forced_outfilename = 0;
 459                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 460                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 461                                         continue;
 462                                 retval |= decode_file(option_values.filenames[i]);
 463                                 first = false;
 464                         }
 465                 }
 466         }
 467         else { /* encode */
 468                 FLAC__bool first = true;
 469
 470                 if(option_values.num_files == 0) {
 471                         retval = encode_file("-", first, true);
 472                 }
 473                 else {
 474                         unsigned i;
 475                         if(option_values.num_files > 1)
 476                                 option_values.cmdline_forced_outfilename = 0;
 477                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 478                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 479                                         continue;
 480                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
 481                                 first = false;
 482                         }
 483                         if(option_values.replay_gain && retval == 0) {
 484                                 float album_gain, album_peak;
 485                                 FLAC__replaygain_get_album(&album_gain, &album_peak);
 486                                 for(i = 0; i < option_values.num_files; i++) {
 487                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
 488                                         if(0 == strcmp(option_values.filenames[i], "-"))
 489                                                 FLAC__ASSERT(0);
 490                                         if(0 != (error = FLAC__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
 491                                                 fprintf(stderr, "%s: ERROR writing ReplayGain album tags\n", outfilename);
 492                                                 retval = 1;
 493                                         }
 494                                 }
 495                         }
 496                 }
 497         }
 498
 499         return retval;
 500 }
 501
 502 FLAC__bool init_options()
 503 {
 504         option_values.show_help = false;
 505         option_values.show_explain = false;
 506         option_values.mode_decode = false;
 507         option_values.verify = false;
 508         option_values.verbose = true;
 509         option_values.continue_through_decode_errors = false;
 510         option_values.lax = false;
 511         option_values.test_only = false;
 512         option_values.analyze = false;
 513         option_values.use_ogg = false;
 514         option_values.has_serial_number = false;
 515         option_values.serial_number = 0;
 516         option_values.do_mid_side = true;
 517         option_values.loose_mid_side = false;
 518         option_values.do_exhaustive_model_search = false;
 519         option_values.do_escape_coding = false;
 520         option_values.do_qlp_coeff_prec_search = false;
 521         option_values.force_to_stdout = false;
 522         option_values.force_raw_format = false;
 523         option_values.delete_input = false;
 524         option_values.replay_gain = false;
 525         option_values.sector_align = false;
 526         option_values.cmdline_forced_outfilename = 0;
 527         option_values.output_prefix = 0;
 528         option_values.aopts.do_residual_text = false;
 529         option_values.aopts.do_residual_gnuplot = false;
 530         option_values.padding = 4096;
 531         option_values.max_lpc_order = 8;
 532         option_values.qlp_coeff_precision = 0;
 533         option_values.skip = 0;
 534         option_values.format_is_big_endian = -1;
 535         option_values.format_is_unsigned_samples = -1;
 536         option_values.format_channels = -1;
 537         option_values.format_bps = -1;
 538         option_values.format_sample_rate = -1;
 539         option_values.blocksize = -1;
 540         option_values.min_residual_partition_order = -1;
 541         option_values.max_residual_partition_order = -1;
 542         option_values.rice_parameter_search_dist = -1;
 543         option_values.requested_seek_points[0] = '\0';
 544         option_values.num_requested_seek_points = -1;
 545
 546         option_values.num_files = 0;
 547         option_values.filenames = 0;
 548
 549         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
 550                 return false;
 551
 552         option_values.debug.disable_constant_subframes = false;
 553         option_values.debug.disable_fixed_subframes = false;
 554         option_values.debug.disable_verbatim_subframes = false;
 555
 556         return true;
 557 }
 558
 559 int parse_options(int argc, char *argv[])
 560 {
 561         int short_option;
 562         int option_index = 1;
 563         FLAC__bool had_error = false;
 564         /*@@@ E and R: are deprecated */
 565         const char *short_opts = "0123456789ab:cdeFhHl:mMo:pP:q:r:sS:tT:vV";
 566
 567         while ((short_option = FLAC__share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
 568                 switch (short_option) {
 569                         case 0: /* long option with no equivalent short option */
 570                                 had_error |= (parse_option(short_option, long_options_[option_index].name, FLAC__share__optarg) != 0);
 571                                 break;
 572                         case '?':
 573                         case ':':
 574                                 had_error = true;
 575                                 break;
 576                         default: /* short option */
 577                                 had_error |= (parse_option(short_option, 0, FLAC__share__optarg) != 0);
 578                                 break;
 579                 }
 580         }
 581
 582         if(had_error) {
 583                 return 1;
 584         }
 585
 586         FLAC__ASSERT(FLAC__share__optind <= argc);
 587
 588         option_values.num_files = argc - FLAC__share__optind;
 589
 590         if(option_values.num_files > 0) {
 591                 unsigned i = 0;
 592                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
 593                         die("out of memory allocating space for file names list");
 594                 while(FLAC__share__optind < argc)
 595                         option_values.filenames[i++] = local_strdup(argv[FLAC__share__optind++]);
 596         }
 597
 598         return 0;
 599 }
 600
 601 int parse_option(int short_option, const char *long_option, const char *option_argument)
 602 {
 603         char *p;
 604
 605         if(short_option == 0) {
 606                 FLAC__ASSERT(0 != long_option);
 607                 if(0 == strcmp(long_option, "delete-input-file")) {
 608                         option_values.delete_input = true;
 609                 }
 610                 else if(0 == strcmp(long_option, "output-prefix")) {
 611                         FLAC__ASSERT(0 != option_argument);
 612                         option_values.output_prefix = option_argument;
 613                 }
 614                 else if(0 == strcmp(long_option, "skip")) {
 615                         FLAC__ASSERT(0 != option_argument);
 616                         option_values.skip = (FLAC__uint64)atoi(option_argument); /* @@@ takes a pretty damn big file to overflow atoi() here, but it could happen */
 617                 }
 618                 else if(0 == strcmp(long_option, "super-secret-impractical-compression-level")) {
 619                         option_values.do_exhaustive_model_search = true;
 620                         option_values.do_escape_coding = true;
 621                         option_values.do_mid_side = true;
 622                         option_values.loose_mid_side = false;
 623                         option_values.do_qlp_coeff_prec_search = true;
 624                         option_values.min_residual_partition_order = 0;
 625                         option_values.max_residual_partition_order = 16;
 626                         option_values.rice_parameter_search_dist = 0;
 627                         option_values.max_lpc_order = 32;
 628                 }
 629                 else if(0 == strcmp(long_option, "force-raw-format")) {
 630                         option_values.force_raw_format = true;
 631                 }
 632                 else if(0 == strcmp(long_option, "lax")) {
 633                         option_values.lax = true;
 634                 }
 635                 else if(0 == strcmp(long_option, "replay-gain")) {
 636                         option_values.replay_gain = true;
 637                 }
 638                 else if(0 == strcmp(long_option, "sector-align")) {
 639                         option_values.sector_align = true;
 640                 }
 641 #ifdef FLAC__HAS_OGG
 642                 else if(0 == strcmp(long_option, "ogg")) {
 643                         option_values.use_ogg = true;
 644                 }
 645                 else if(0 == strcmp(long_option, "serial-number")) {
 646                         option_values.has_serial_number = true;
 647                         option_values.serial_number = atol(option_argument);
 648                 }
 649 #endif
 650                 else if(0 == strcmp(long_option, "endian")) {
 651                         FLAC__ASSERT(0 != option_argument);
 652                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
 653                                 option_values.format_is_big_endian = true;
 654                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
 655                                 option_values.format_is_big_endian = false;
 656                         else
 657                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
 658                 }
 659                 else if(0 == strcmp(long_option, "channels")) {
 660                         FLAC__ASSERT(0 != option_argument);
 661                         option_values.format_channels = atoi(option_argument);
 662                 }
 663                 else if(0 == strcmp(long_option, "bps")) {
 664                         FLAC__ASSERT(0 != option_argument);
 665                         option_values.format_bps = atoi(option_argument);
 666                 }
 667                 else if(0 == strcmp(long_option, "sample-rate")) {
 668                         FLAC__ASSERT(0 != option_argument);
 669                         option_values.format_sample_rate = atoi(option_argument);
 670                 }
 671                 else if(0 == strcmp(long_option, "sign")) {
 672                         FLAC__ASSERT(0 != option_argument);
 673                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
 674                                 option_values.format_is_unsigned_samples = false;
 675                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
 676                                 option_values.format_is_unsigned_samples = true;
 677                         else
 678                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
 679                 }
 680                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
 681                         option_values.aopts.do_residual_gnuplot = true;
 682                 }
 683                 else if(0 == strcmp(long_option, "residual-text")) {
 684                         option_values.aopts.do_residual_text = true;
 685                 }
 686                 /*
 687                  * negatives
 688                  */
 689                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
 690                         option_values.continue_through_decode_errors = false;
 691                 }
 692                 else if(0 == strcmp(long_option, "no-silent")) {
 693                         option_values.verbose = true;
 694                 }
 695                 else if(0 == strcmp(long_option, "no-seektable")) {
 696                         option_values.num_requested_seek_points = 0;
 697                         option_values.requested_seek_points[0] = '\0';
 698                 }
 699                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
 700                         option_values.delete_input = false;
 701                 }
 702                 else if(0 == strcmp(long_option, "no-replay-gain")) {
 703                         option_values.replay_gain = false;
 704                 }
 705                 else if(0 == strcmp(long_option, "no-sector-align")) {
 706                         option_values.sector_align = false;
 707                 }
 708                 else if(0 == strcmp(long_option, "no-lax")) {
 709                         option_values.lax = false;
 710                 }
 711 #ifdef FLAC__HAS_OGG
 712                 else if(0 == strcmp(long_option, "no-ogg")) {
 713                         option_values.use_ogg = false;
 714                 }
 715 #endif
 716                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
 717                         option_values.do_exhaustive_model_search = false;
 718                 }
 719 #if 0
 720                 /* @@@ deprecated: */
 721                 else if(0 == strcmp(long_option, "no-escape-coding")) {
 722                         option_values.do_escape_coding = false;
 723                 }
 724 #endif
 725                 else if(0 == strcmp(long_option, "no-mid-side")) {
 726                         option_values.do_mid_side = option_values.loose_mid_side = false;
 727                 }
 728                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
 729                         option_values.loose_mid_side = option_values.do_mid_side = false;
 730                 }
 731                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
 732                         option_values.do_qlp_coeff_prec_search = false;
 733                 }
 734                 else if(0 == strcmp(long_option, "no-padding")) {
 735                         option_values.padding = -1;
 736                 }
 737                 else if(0 == strcmp(long_option, "no-verify")) {
 738                         option_values.verify = false;
 739                 }
 740                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
 741                         option_values.aopts.do_residual_gnuplot = false;
 742                 }
 743                 else if(0 == strcmp(long_option, "no-residual-text")) {
 744                         option_values.aopts.do_residual_text = false;
 745                 }
 746                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
 747                         option_values.debug.disable_constant_subframes = true;
 748                 }
 749                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
 750                         option_values.debug.disable_fixed_subframes = true;
 751                 }
 752                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
 753                         option_values.debug.disable_verbatim_subframes = true;
 754                 }
 755         }
 756         else {
 757                 const char *violation;
 758                 switch(short_option) {
 759                         case 'h':
 760                                 option_values.show_help = true;
 761                                 break;
 762                         case 'H':
 763                                 option_values.show_explain = true;
 764                                 break;
 765                         case 'v':
 766                                 option_values.show_version = true;
 767                                 break;
 768                         case 'd':
 769                                 option_values.mode_decode = true;
 770                                 break;
 771                         case 'a':
 772                                 option_values.mode_decode = true;
 773                                 option_values.analyze = true;
 774                                 break;
 775                         case 't':
 776                                 option_values.mode_decode = true;
 777                                 option_values.test_only = true;
 778                                 break;
 779                         case 'c':
 780                                 option_values.force_to_stdout = true;
 781                                 break;
 782                         case 's':
 783                                 option_values.verbose = false;
 784                                 break;
 785                         case 'o':
 786                                 FLAC__ASSERT(0 != option_argument);
 787                                 option_values.cmdline_forced_outfilename = option_argument;
 788                                 break;
 789                         case 'F':
 790                                 option_values.continue_through_decode_errors = true;
 791                                 break;
 792                         case 'T':
 793                                 FLAC__ASSERT(0 != option_argument);
 794                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
 795                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
 796                                 break;
 797                         case '0':
 798                                 option_values.do_exhaustive_model_search = false;
 799                                 option_values.do_escape_coding = false;
 800                                 option_values.do_mid_side = false;
 801                                 option_values.loose_mid_side = false;
 802                                 option_values.qlp_coeff_precision = 0;
 803                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 804                                 option_values.rice_parameter_search_dist = 0;
 805                                 option_values.max_lpc_order = 0;
 806                                 break;
 807                         case '1':
 808                                 option_values.do_exhaustive_model_search = false;
 809                                 option_values.do_escape_coding = false;
 810                                 option_values.do_mid_side = true;
 811                                 option_values.loose_mid_side = true;
 812                                 option_values.qlp_coeff_precision = 0;
 813                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 814                                 option_values.rice_parameter_search_dist = 0;
 815                                 option_values.max_lpc_order = 0;
 816                                 break;
 817                         case '2':
 818                                 option_values.do_exhaustive_model_search = false;
 819                                 option_values.do_escape_coding = false;
 820                                 option_values.do_mid_side = true;
 821                                 option_values.loose_mid_side = false;
 822                                 option_values.qlp_coeff_precision = 0;
 823                                 option_values.min_residual_partition_order = 0;
 824                                 option_values.max_residual_partition_order = 3;
 825                                 option_values.rice_parameter_search_dist = 0;
 826                                 option_values.max_lpc_order = 0;
 827                                 break;
 828                         case '3':
 829                                 option_values.do_exhaustive_model_search = false;
 830                                 option_values.do_escape_coding = false;
 831                                 option_values.do_mid_side = false;
 832                                 option_values.loose_mid_side = false;
 833                                 option_values.qlp_coeff_precision = 0;
 834                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 835                                 option_values.rice_parameter_search_dist = 0;
 836                                 option_values.max_lpc_order = 6;
 837                                 break;
 838                         case '4':
 839                                 option_values.do_exhaustive_model_search = false;
 840                                 option_values.do_escape_coding = false;
 841                                 option_values.do_mid_side = true;
 842                                 option_values.loose_mid_side = true;
 843                                 option_values.qlp_coeff_precision = 0;
 844                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 845                                 option_values.rice_parameter_search_dist = 0;
 846                                 option_values.max_lpc_order = 8;
 847                                 break;
 848                         case '5':
 849                                 option_values.do_exhaustive_model_search = false;
 850                                 option_values.do_escape_coding = false;
 851                                 option_values.do_mid_side = true;
 852                                 option_values.loose_mid_side = false;
 853                                 option_values.qlp_coeff_precision = 0;
 854                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 855                                 option_values.rice_parameter_search_dist = 0;
 856                                 option_values.max_lpc_order = 8;
 857                                 break;
 858                         case '6':
 859                                 option_values.do_exhaustive_model_search = false;
 860                                 option_values.do_escape_coding = false;
 861                                 option_values.do_mid_side = true;
 862                                 option_values.loose_mid_side = false;
 863                                 option_values.qlp_coeff_precision = 0;
 864                                 option_values.min_residual_partition_order = 0;
 865                                 option_values.max_residual_partition_order = 4;
 866                                 option_values.rice_parameter_search_dist = 0;
 867                                 option_values.max_lpc_order = 8;
 868                                 break;
 869                         case '7':
 870                                 option_values.do_exhaustive_model_search = true;
 871                                 option_values.do_escape_coding = false;
 872                                 option_values.do_mid_side = true;
 873                                 option_values.loose_mid_side = false;
 874                                 option_values.qlp_coeff_precision = 0;
 875                                 option_values.min_residual_partition_order = 0;
 876                                 option_values.max_residual_partition_order = 6;
 877                                 option_values.rice_parameter_search_dist = 0;
 878                                 option_values.max_lpc_order = 8;
 879                                 break;
 880                         case '8':
 881                                 option_values.do_exhaustive_model_search = true;
 882                                 option_values.do_escape_coding = false;
 883                                 option_values.do_mid_side = true;
 884                                 option_values.loose_mid_side = false;
 885                                 option_values.qlp_coeff_precision = 0;
 886                                 option_values.min_residual_partition_order = 0;
 887                                 option_values.max_residual_partition_order = 6;
 888                                 option_values.rice_parameter_search_dist = 0;
 889                                 option_values.max_lpc_order = 12;
 890                                 break;
 891                         case '9':
 892                                 return usage_error("ERROR: compression level '9' is reserved\n");
 893                         case 'V':
 894                                 option_values.verify = true;
 895                                 break;
 896                         case 'S':
 897                                 FLAC__ASSERT(0 != option_argument);
 898                                 if(option_values.num_requested_seek_points < 0)
 899                                         option_values.num_requested_seek_points = 0;
 900                                 option_values.num_requested_seek_points++;
 901                                 strcat(option_values.requested_seek_points, option_argument);
 902                                 strcat(option_values.requested_seek_points, "<");
 903                                 break;
 904                         case 'P':
 905                                 FLAC__ASSERT(0 != option_argument);
 906                                 option_values.padding = atoi(option_argument);
 907                                 if(option_values.padding < 0)
 908                                         return usage_error("ERROR: argument to -P must be >= 0\n");
 909                                 break;
 910                         case 'b':
 911                                 FLAC__ASSERT(0 != option_argument);
 912                                 option_values.blocksize = atoi(option_argument);
 913                                 break;
 914                         case 'e':
 915                                 option_values.do_exhaustive_model_search = true;
 916                                 break;
 917                         case 'E':
 918                                 option_values.do_escape_coding = true;
 919                                 break;
 920                         case 'l':
 921                                 FLAC__ASSERT(0 != option_argument);
 922                                 option_values.max_lpc_order = atoi(option_argument);
 923                                 break;
 924                         case 'm':
 925                                 option_values.do_mid_side = true;
 926                                 option_values.loose_mid_side = false;
 927                                 break;
 928                         case 'M':
 929                                 option_values.loose_mid_side = option_values.do_mid_side = true;
 930                                 break;
 931                         case 'p':
 932                                 option_values.do_qlp_coeff_prec_search = true;
 933                                 break;
 934                         case 'q':
 935                                 FLAC__ASSERT(0 != option_argument);
 936                                 option_values.qlp_coeff_precision = atoi(option_argument);
 937                                 break;
 938                         case 'r':
 939                                 FLAC__ASSERT(0 != option_argument);
 940                                 p = strchr(option_argument, ',');
 941                                 if(0 == p) {
 942                                         option_values.min_residual_partition_order = 0;
 943                                         option_values.max_residual_partition_order = atoi(option_argument);
 944                                 }
 945                                 else {
 946                                         option_values.min_residual_partition_order = atoi(option_argument);
 947                                         option_values.max_residual_partition_order = atoi(++p);
 948                                 }
 949                                 break;
 950                         case 'R':
 951                                 FLAC__ASSERT(0 != option_argument);
 952                                 option_values.rice_parameter_search_dist = atoi(option_argument);
 953                                 break;
 954                         default:
 955                                 FLAC__ASSERT(0);
 956                 }
 957         }
 958
 959         return 0;
 960 }
 961
 962 void free_options()
 963 {
 964         if(0 != option_values.filenames)
 965                 free(option_values.filenames);
 966         if(0 != option_values.vorbis_comment)
 967                 FLAC__metadata_object_delete(option_values.vorbis_comment);
 968 }
 969
 970 int usage_error(const char *message, ...)
 971 {
 972         va_list args;
 973
 974         FLAC__ASSERT(0 != message);
 975
 976         va_start(args, message);
 977
 978         (void) vfprintf(stderr, message, args);
 979
 980         va_end(args);
 981
 982         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
 983
 984         return 1;
 985 }
 986
 987 void show_version()
 988 {
 989         printf("flac %s\n", FLAC__VERSION_STRING);
 990 }
 991
 992 static void usage_header()
 993 {
 994         printf("===============================================================================\n");
 995         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
 996         printf("Copyright (C) 2000,2001,2002  Josh Coalson\n");
 997         printf("\n");
 998         printf("This program is free software; you can redistribute it and/or\n");
 999         printf("modify it under the terms of the GNU General Public License\n");
1000         printf("as published by the Free Software Foundation; either version 2\n");
1001         printf("of the License, or (at your option) any later version.\n");
1002         printf("\n");
1003         printf("This program is distributed in the hope that it will be useful,\n");
1004         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1005         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1006         printf("GNU General Public License for more details.\n");
1007         printf("\n");
1008         printf("You should have received a copy of the GNU General Public License\n");
1009         printf("along with this program; if not, write to the Free Software\n");
1010         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1011         printf("===============================================================================\n");
1012 }
1013
1014 static void usage_summary()
1015 {
1016         printf("Usage:\n");
1017         printf("\n");
1018         printf(" Encoding: flac [-s] [--skip #] [<encoding/format-options>] [INPUTFILE [...]]\n");
1019         printf(" Decoding: flac -d [-s] [--skip #] [-F] [<format-options>] [INPUTFILE [...]]\n");
1020         printf("  Testing: flac -t [-s] [INPUTFILE [...]]\n");
1021         printf("Analyzing: flac -a [-s] [--skip #] [<analysis-options>] [INPUTFILE [...]]\n");
1022         printf("\n");
1023 }
1024
1025 void short_usage()
1026 {
1027         usage_header();
1028         printf("\n");
1029         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1030         printf("instructions use 'flac --explain'\n");
1031         printf("\n");
1032         printf("To encode:\n");
1033         printf("  flac [-#] [INPUTFILE [...]]\n");
1034         printf("\n");
1035         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1036         printf("\n");
1037         printf("To decode:\n");
1038         printf("  flac -d [INPUTFILE [...]]\n");
1039         printf("\n");
1040         printf("To test:\n");
1041         printf("  flac -t [INPUTFILE [...]]\n");
1042 }
1043
1044 void show_help()
1045 {
1046         usage_header();
1047         usage_summary();
1048         printf("generic options:\n");
1049         printf("  -v, --version                Show the flac version number\n");
1050         printf("  -h, --help                   Show this screen\n");
1051         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1052         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1053         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1054         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1055         printf("  -c, --stdout                 Write output to stdout\n");
1056         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1057         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1058         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1059         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1060         printf("      --skip=#                 Skip the first # samples of each input file\n");
1061         printf("analysis options:\n");
1062         printf("      --residual-text          Include residual signal in text output\n");
1063         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1064         printf("decoding options:\n");
1065         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1066         printf("encoding options:\n");
1067         printf("  -V, --verify                 Verify a correct encoding\n");
1068 #ifdef FLAC__HAS_OGG
1069         printf("      --ogg                    Use Ogg as transport layer\n");
1070         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1071 #endif
1072         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1073         printf("      --sector-align           Align multiple files on sector boundaries\n");
1074         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1075         printf("  -S, --seekpoint={#|X|#x}     Add seek point(s)\n");
1076         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1077         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1078         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1079         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1080         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1081         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1082         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1083         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1084         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1085         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1086         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1087         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1088         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1089         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1090         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1091 #if 0
1092         /*@@@ deprecated: */
1093         printf("  -E, --escape-coding                Do escape coding in the entropy coder\n");
1094 #endif
1095         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1096         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1097         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1098         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1099 #if 0
1100         /*@@@ deprecated: */
1101         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1102 #endif
1103         printf("format options:\n");
1104         printf("      --endian={big|little}    Set byte order for samples\n");
1105         printf("      --channels=#             Number of channels\n");
1106         printf("      --bps=#                  Number of bits per sample\n");
1107         printf("      --sample-rate=#          Sample rate in Hz\n");
1108         printf("      --sign={signed|unsigned} Sign of samples\n");
1109         printf("      --force-raw-format       Treat input or output as raw samples\n");
1110         printf("negative options:\n");
1111         printf("      --no-adaptive-mid-side\n");
1112         printf("      --no-decode-through-errors\n");
1113         printf("      --no-delete-input-file\n");
1114 #if 0
1115 /* @@@ deprecated: */
1116         printf("      --no-escape-coding\n");
1117 #endif
1118         printf("      --no-exhaustive-model-search\n");
1119         printf("      --no-lax\n");
1120         printf("      --no-mid-side\n");
1121 #ifdef FLAC__HAS_OGG
1122         printf("      --no-ogg\n");
1123 #endif
1124         printf("      --no-padding\n");
1125         printf("      --no-qlp-coeff-prec-search\n");
1126         printf("      --no-replay-gain\n");
1127         printf("      --no-residual-gnuplot\n");
1128         printf("      --no-residual-text\n");
1129         printf("      --no-sector-align\n");
1130         printf("      --no-seektable\n");
1131         printf("      --no-silent\n");
1132         printf("      --no-verify\n");
1133 }
1134
1135 void show_explain()
1136 {
1137         usage_header();
1138         usage_summary();
1139         printf("For encoding:\n");
1140         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1141         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1142         printf("For decoding, the reverse is true.\n");
1143         printf("\n");
1144         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1145         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1146         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1147         printf("instead of:\n");
1148         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1149         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1150         printf("WAVE/AIFF header contents when necessary.\n");
1151         printf("\n");
1152         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1153         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1154         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1155         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1156         printf("files using -fr.\n");
1157         printf("\n");
1158         printf("generic options:\n");
1159         printf("  -v, --version                Show the flac version number\n");
1160         printf("  -h, --help                   Show basic usage a list of all options\n");
1161         printf("  -H, --explain                Show this screen\n");
1162         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1163         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1164         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1165         printf("  -c, --stdout                 Write output to stdout\n");
1166         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1167         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1168         printf("                               changes the extension.  May only be used when\n");
1169         printf("                               encoding a single file.  May not be used in\n");
1170         printf("                               conjunction with --output-prefix.\n");
1171         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1172         printf("                               STRING.  This can be useful for encoding or\n");
1173         printf("                               decoding files to a different directory.  Make\n");
1174         printf("                               sure if your STRING is a path name that it ends\n");
1175         printf("                               with a '/' slash.\n");
1176         printf("      --delete-input-file      Automatically delete the input file after a\n");
1177         printf("                               successful encode or decode.  If there was an\n");
1178         printf("                               error (including a verify error) the input file\n");
1179         printf("                               is left intact.\n");
1180         printf("      --skip=#                 Skip the first # samples of each input file; can\n");
1181         printf("                               be used both for encoding and decoding\n");
1182         printf("analysis options:\n");
1183         printf("      --residual-text          Include residual signal in text output.  This\n");
1184         printf("                               will make the file very big, much larger than\n");
1185         printf("                               even the decoded file.\n");
1186         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1187         printf("                               of each subframe\n");
1188         printf("decoding options:\n");
1189         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1190         printf("                               and removes the partially decoded file if it\n");
1191         printf("                               encounters a bitstream error.  With -F, errors\n");
1192         printf("                               are still printed but flac will continue\n");
1193         printf("                               decoding to completion.  Note that errors may\n");
1194         printf("                               cause the decoded audio to be missing some\n");
1195         printf("                               samples or have silent sections.\n");
1196         printf("encoding options:\n");
1197         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1198         printf("                               output in parallel and comparing to the\n");
1199         printf("                               original\n");
1200 #ifdef FLAC__HAS_OGG
1201         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1202         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1203         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1204         printf("                               resulting file should have an '.ogg' extension\n");
1205         printf("                               and will still be decodable by flac.  When\n");
1206         printf("                               decoding, force the input to be treated as\n");
1207         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1208         printf("                               from stdin or when the filename does not end in\n");
1209         printf("                               '.ogg'.\n");
1210         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1211         printf("                               encoding and no serial number is given, flac\n");
1212         printf("                               uses '0'.  When decoding and no number is\n");
1213         printf("                               given, flac uses the serial number of the first\n");
1214         printf("                               page.\n");
1215 #endif
1216         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1217         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1218         printf("                               on sector boundaries.\n");
1219         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1220         printf("                               comments.  Title gains/peaks will be computed\n");
1221         printf("                               for each file, and an album gain/peak will be\n");
1222         printf("                               computed for all files.  All input files must\n");
1223         printf("                               have the same resolution, sample rate, and\n");
1224         printf("                               number of channels.  The sample rate must be\n");
1225         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1226         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1227         printf("                               few extra bytes in the PADDING block.\n");
1228         printf("  -S, --seekpoint={#|X|#x}     Include a point or points in a SEEKTABLE\n");
1229         printf("       #  : a specific sample number for a seek point\n");
1230         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1231         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1232         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1233         printf("           ified union of all such values.\n");
1234         printf("     With no -S options, flac defaults to '-S 100x'.  Use -S- for no SEEKTABLE.\n");
1235         printf("     Note: -S #x will not work if the encoder can't determine the input size\n");
1236         printf("           before starting.\n");
1237         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1238         printf("           either no seek point entered (if the input size is determinable\n");
1239         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1240         printf("           determinable)\n");
1241         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1242         printf("                               block of the given length (in bytes) after the\n");
1243         printf("                               STREAMINFO block.  This is useful if you plan\n");
1244         printf("                               to tag the file later with an APPLICATION\n");
1245         printf("                               block; instead of having to rewrite the entire\n");
1246         printf("                               file later just to insert your block, you can\n");
1247         printf("                               write directly over the PADDING block.  Note\n");
1248         printf("                               that the total length of the PADDING block will\n");
1249         printf("                               be 4 bytes longer than the length given because\n");
1250         printf("                               of the 4 metadata block header bytes.  You can\n");
1251         printf("                               force no PADDING block at all to be written with\n");
1252         printf("                               --no-padding, which is the default.\n");
1253         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1254         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1255         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1256         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1257         printf("                               used)\n");
1258         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1259         printf("                               comment if necessary.  This option may appear\n");
1260         printf("                               more than once to add several comments.  NOTE:\n");
1261         printf("                               all tags will be added to all encoded files.\n");
1262         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1263         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1264         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1265         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1266         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1267         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1268         printf("                                     -5 is the default setting\n");
1269         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1270         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1271         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1272         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1273         printf("                                     (stereo only)\n");
1274         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1275         printf("                                     (stereo only)\n");
1276         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1277 #if 0
1278         /*@@@ deprecated: */
1279         printf("  -E, --escape-coding                Do escape coding in the entropy coder.\n");
1280         printf("                                     This causes the encoder to use an\n");
1281         printf("                                     unencoded representation of the residual\n");
1282         printf("                                     in a partition if it is smaller.  It\n");
1283         printf("                                     increases the runtime and usually results\n");
1284         printf("                                     in an improvement of less than 1%.\n");
1285 #endif
1286         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1287         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1288         printf("                                     quantization (expensive!); overrides -q;\n");
1289         printf("                                     does nothing if using -l 0\n");
1290         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1291         printf("                                     linear-predictor coefficients; 0 => let\n");
1292         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1293         printf("                                     default is -q 0)\n");
1294         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1295         printf("                                     (# is 0..16; min defaults to 0; the\n");
1296         printf("                                     default is -r 0; above 4 doesn't usually\n");
1297         printf("                                     help much)\n");
1298 #if 0
1299         /*@@@ deprecated: */
1300         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1301 #endif
1302         printf("format options:\n");
1303         printf("      --endian={big|little}    Set byte order for samples\n");
1304         printf("      --channels=#             Number of channels\n");
1305         printf("      --bps=#                  Number of bits per sample\n");
1306         printf("      --sample-rate=#          Sample rate in Hz\n");
1307         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1308         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1309         printf("                               decoding) to be treated as raw samples\n");
1310         printf("negative options:\n");
1311         printf("      --no-adaptive-mid-side\n");
1312         printf("      --no-decode-through-errors\n");
1313         printf("      --no-delete-input-file\n");
1314 #if 0
1315 /* @@@ deprecated: */
1316         printf("      --no-escape-coding\n");
1317 #endif
1318         printf("      --no-exhaustive-model-search\n");
1319         printf("      --no-lax\n");
1320         printf("      --no-mid-side\n");
1321 #ifdef FLAC__HAS_OGG
1322         printf("      --no-ogg\n");
1323 #endif
1324         printf("      --no-padding\n");
1325         printf("      --no-qlp-coeff-prec-search\n");
1326         printf("      --no-residual-gnuplot\n");
1327         printf("      --no-residual-text\n");
1328         printf("      --no-sector-align\n");
1329         printf("      --no-seektable\n");
1330         printf("      --no-silent\n");
1331         printf("      --no-verify\n");
1332 }
1333
1334 void
1335 format_mistake(const char *infilename, const char *wrong, const char *right)
1336 {
1337         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1338 }
1339
1340 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1341 {
1342         FILE *encode_infile;
1343         FLAC__byte lookahead[12];
1344         unsigned lookahead_length = 0;
1345         FileFormat fmt= RAW;
1346         int retval;
1347         long infilesize;
1348         encode_options_t common_options;
1349         const char *outfilename = get_encoded_outfilename(infilename);
1350
1351         if(0 == strcmp(infilename, "-")) {
1352                 infilesize = -1;
1353                 encode_infile = FLAC__file_utils_get_binary_stdin();
1354         }
1355         else {
1356                 infilesize = FLAC__file_utils_get_filesize(infilename);
1357                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1358                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1359                         return 1;
1360                 }
1361         }
1362
1363         if(!option_values.force_raw_format) {
1364                 /* first set format based on name */
1365                 if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1366                         fmt= WAV;
1367                 else if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1368                         fmt= AIF;
1369                 else if(strlen(infilename) > 4 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1370                         fmt= AIF;
1371
1372                 /* attempt to guess the file type based on the first 12 bytes */
1373                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1374                         if(fmt != RAW)
1375                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1376                         fmt= RAW;
1377                 }
1378                 else {
1379                         if(!strncmp(lookahead, "RIFF", 4) && !strncmp(lookahead+8, "WAVE", 4))
1380                                 fmt= WAV;
1381                         else if(!strncmp(lookahead, "FORM", 4) && !strncmp(lookahead+8, "AIFF", 4))
1382                                 fmt= AIF;
1383                         else {
1384                                 if(fmt != RAW)
1385                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1386                                 fmt= RAW;
1387                         }
1388                 }
1389         }
1390
1391         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1392                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1393                 return 1;
1394         }
1395
1396         if(fmt == RAW) {
1397                 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)
1398                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1399         }
1400
1401         if(encode_infile == stdin || option_values.force_to_stdout) {
1402                 if(option_values.replay_gain)
1403                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1404         }
1405
1406         common_options.verbose = option_values.verbose;
1407         common_options.skip = option_values.skip;
1408         common_options.verify = option_values.verify;
1409 #ifdef FLAC__HAS_OGG
1410         common_options.use_ogg = option_values.use_ogg;
1411         common_options.has_serial_number = option_values.has_serial_number;
1412         common_options.serial_number = option_values.serial_number;
1413 #endif
1414         common_options.lax = option_values.lax;
1415         common_options.do_mid_side = option_values.do_mid_side;
1416         common_options.loose_mid_side = option_values.loose_mid_side;
1417         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1418         common_options.do_escape_coding = option_values.do_escape_coding;
1419         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1420         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1421         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1422         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1423         common_options.max_lpc_order = option_values.max_lpc_order;
1424         common_options.blocksize = (unsigned)option_values.blocksize;
1425         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1426         common_options.padding = option_values.padding;
1427         common_options.requested_seek_points = option_values.requested_seek_points;
1428         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1429         common_options.is_first_file = is_first_file;
1430         common_options.is_last_file = is_last_file;
1431         common_options.align_reservoir = align_reservoir;
1432         common_options.align_reservoir_samples = &align_reservoir_samples;
1433         common_options.replay_gain = option_values.replay_gain;
1434         common_options.sector_align = option_values.sector_align;
1435         common_options.vorbis_comment = option_values.vorbis_comment;
1436         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1437         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1438         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1439
1440         if(fmt == RAW) {
1441                 raw_encode_options_t options;
1442
1443                 options.common = common_options;
1444                 options.is_big_endian = option_values.format_is_big_endian;
1445                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1446                 options.channels = option_values.format_channels;
1447                 options.bps = option_values.format_bps;
1448                 options.sample_rate = option_values.format_sample_rate;
1449
1450                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1451         }
1452         else {
1453                 wav_encode_options_t options;
1454
1455                 options.common = common_options;
1456
1457                 if(fmt == AIF)
1458                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1459                 else
1460                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1461         }
1462
1463         if(retval == 0 && strcmp(infilename, "-")) {
1464                 if(strcmp(outfilename, "-")) {
1465                         if(option_values.replay_gain) {
1466                                 float title_gain, title_peak;
1467                                 const char *error;
1468                                 FLAC__replaygain_get_title(&title_gain, &title_peak);
1469                                 if(0 != (error = FLAC__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1470                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1471                                 }
1472                         }
1473                         FLAC__file_utils_copy_metadata(infilename, outfilename);
1474                 }
1475                 if(option_values.delete_input)
1476                         unlink(infilename);
1477         }
1478
1479         return retval;
1480 }
1481
1482 int decode_file(const char *infilename)
1483 {
1484         int retval;
1485         FLAC__bool treat_as_ogg = false;
1486         decode_options_t common_options;
1487         const char *outfilename = get_decoded_outfilename(infilename);
1488
1489         if(!option_values.test_only && !option_values.analyze) {
1490                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1491                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1492         }
1493
1494         if(option_values.use_ogg)
1495                 treat_as_ogg = true;
1496         else if(0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1497                 treat_as_ogg = true;
1498         else
1499                 treat_as_ogg = false;
1500
1501 #ifndef FLAC__HAS_OGG
1502         if(treat_as_ogg) {
1503                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1504                 return 1;
1505         }
1506 #endif
1507
1508         common_options.verbose = option_values.verbose;
1509         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1510 #ifdef FLAC__HAS_OGG
1511         common_options.is_ogg = treat_as_ogg;
1512         common_options.use_first_serial_number = !option_values.has_serial_number;
1513         common_options.serial_number = option_values.serial_number;
1514 #endif
1515         common_options.skip = option_values.skip;
1516
1517         if(!option_values.force_raw_format) {
1518                 wav_decode_options_t options;
1519
1520                 options.common = common_options;
1521
1522                 retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1523         }
1524         else {
1525                 raw_decode_options_t options;
1526
1527                 options.common = common_options;
1528                 options.is_big_endian = option_values.format_is_big_endian;
1529                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1530
1531                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1532         }
1533
1534         if(retval == 0 && strcmp(infilename, "-")) {
1535                 if(strcmp(outfilename, "-"))
1536                         FLAC__file_utils_copy_metadata(infilename, outfilename);
1537                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1538                         unlink(infilename);
1539         }
1540
1541         return retval;
1542 }
1543
1544 const char *get_encoded_outfilename(const char *infilename)
1545 {
1546         if(0 == option_values.cmdline_forced_outfilename) {
1547                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1548
1549                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1550                         strcpy(buffer, "-");
1551                 }
1552                 else {
1553                         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1554                         char *p;
1555                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1556                         strcat(buffer, infilename);
1557                         if(0 == (p = strrchr(buffer, '.')))
1558                                 strcat(buffer, suffix);
1559                         else {
1560                                 if(0 == strcmp(p, suffix)) {
1561                                         strcpy(p, "_new");
1562                                         strcat(p, suffix);
1563                                 }
1564                                 else
1565                                         strcpy(p, suffix);
1566                         }
1567                 }
1568                 return buffer;
1569         }
1570         else
1571                 return option_values.cmdline_forced_outfilename;
1572 }
1573
1574 const char *get_decoded_outfilename(const char *infilename)
1575 {
1576         if(0 == option_values.cmdline_forced_outfilename) {
1577                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1578
1579                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1580                         strcpy(buffer, "-");
1581                 }
1582                 else {
1583                         static const char *suffixes[] = { ".wav", ".raw", ".ana" };
1584                         const char *suffix = suffixes[option_values.analyze? 2 : option_values.force_raw_format? 1 : 0];
1585                         char *p;
1586                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1587                         strcat(buffer, infilename);
1588                         if(0 == (p = strrchr(buffer, '.')))
1589                                 strcat(buffer, suffix);
1590                         else {
1591                                 if(0 == strcmp(p, suffix)) {
1592                                         strcpy(p, "_new");
1593                                         strcat(p, suffix);
1594                                 }
1595                                 else
1596                                         strcpy(p, suffix);
1597                         }
1598                 }
1599                 return buffer;
1600         }
1601         else
1602                 return option_values.cmdline_forced_outfilename;
1603 }
1604
1605 void die(const char *message)
1606 {
1607         FLAC__ASSERT(0 != message);
1608         fprintf(stderr, "ERROR: %s\n", message);
1609         exit(1);
1610 }
1611
1612 char *local_strdup(const char *source)
1613 {
1614         char *ret;
1615         FLAC__ASSERT(0 != source);
1616         if(0 == (ret = strdup(source)))
1617                 die("out of memory during strdup()");
1618         return ret;
1619 }