src/flac/main.c

   1 /* flac - Command-line FLAC encoder/decoder
   2  * Copyright (C) 2000,2001,2002,2003,2004  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 #include <time.h>
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include <config.h>
  29 #endif
  30
  31 #if !defined _MSC_VER && !defined __MINGW32__
  32 /* unlink is in stdio.h in VC++ */
  33 #include <unistd.h> /* for unlink() */
  34 #else
  35 #define strcasecmp stricmp
  36 #endif
  37 #include "FLAC/all.h"
  38 #include "share/grabbag.h"
  39 #include "analyze.h"
  40 #include "decode.h"
  41 #include "encode.h"
  42 #include "local_string_utils.h" /* for flac__strlcat() and flac__strlcpy() */
  43 #include "utils.h"
  44 #include "vorbiscomment.h"
  45
  46 #if 0
  47 /*[JEC] was:#if HAVE_GETOPT_LONG*/
  48 /*[JEC] see flac/include/share/getopt.h as to why the change */
  49 #  include <getopt.h>
  50 #else
  51 #  include "share/getopt.h"
  52 #endif
  53
  54 typedef enum { RAW, WAV, AIF } FileFormat;
  55
  56 static int do_it();
  57
  58 static FLAC__bool init_options();
  59 static int parse_options(int argc, char *argv[]);
  60 static int parse_option(int short_option, const char *long_option, const char *option_argument);
  61 static void free_options();
  62
  63 static int usage_error(const char *message, ...);
  64 static void short_usage();
  65 static void show_version();
  66 static void show_help();
  67 static void show_explain();
  68 static void format_mistake(const char *infilename, const char *wrong, const char *right);
  69
  70 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
  71 static int decode_file(const char *infilename);
  72
  73 static const char *get_encoded_outfilename(const char *infilename);
  74 static const char *get_decoded_outfilename(const char *infilename);
  75 static const char *get_outfilename(const char *infilename, const char *suffix);
  76
  77 static void die(const char *message);
  78 static char *local_strdup(const char *source);
  79
  80
  81 /*
  82  * share__getopt format struct; note that for long options with no
  83  * short option equivalent we just set the 'val' field to 0.
  84  */
  85 static struct share__option long_options_[] = {
  86         /*
  87          * general options
  88          */
  89         { "help"             , share__no_argument, 0, 'h' },
  90         { "explain"          , share__no_argument, 0, 'H' },
  91         { "version"          , share__no_argument, 0, 'v' },
  92         { "decode"           , share__no_argument, 0, 'd' },
  93         { "analyze"          , share__no_argument, 0, 'a' },
  94         { "test"             , share__no_argument, 0, 't' },
  95         { "stdout"           , share__no_argument, 0, 'c' },
  96         { "silent"           , share__no_argument, 0, 's' },
  97         { "force"            , share__no_argument, 0, 'f' },
  98         { "delete-input-file", share__no_argument, 0, 0 },
  99         { "output-prefix"    , share__required_argument, 0, 0 },
 100         { "output-name"      , share__required_argument, 0, 'o' },
 101         { "skip"             , share__required_argument, 0, 0 },
 102         { "until"            , share__required_argument, 0, 0 },
 103
 104         /*
 105          * decoding options
 106          */
 107         { "decode-through-errors", share__no_argument, 0, 'F' },
 108         { "apply-replaygain-which-is-not-lossless", share__optional_argument, 0, 0 }, /* undocumented */
 109
 110         /*
 111          * encoding options
 112          */
 113         { "cuesheet"                  , share__required_argument, 0, 0 },
 114         { "no-cued-seekpoints"        , share__no_argument, 0, 0 },
 115         { "tag"                       , share__required_argument, 0, 'T' },
 116         { "compression-level-0"       , share__no_argument, 0, '0' },
 117         { "compression-level-1"       , share__no_argument, 0, '1' },
 118         { "compression-level-2"       , share__no_argument, 0, '2' },
 119         { "compression-level-3"       , share__no_argument, 0, '3' },
 120         { "compression-level-4"       , share__no_argument, 0, '4' },
 121         { "compression-level-5"       , share__no_argument, 0, '5' },
 122         { "compression-level-6"       , share__no_argument, 0, '6' },
 123         { "compression-level-7"       , share__no_argument, 0, '7' },
 124         { "compression-level-8"       , share__no_argument, 0, '8' },
 125         { "compression-level-9"       , share__no_argument, 0, '9' },
 126         { "best"                      , share__no_argument, 0, '8' },
 127         { "fast"                      , share__no_argument, 0, '0' },
 128         { "super-secret-totally-impractical-compression-level", share__no_argument, 0, 0 },
 129         { "verify"                    , share__no_argument, 0, 'V' },
 130         { "force-aiff-format"         , share__no_argument, 0, 0 },
 131         { "force-raw-format"          , share__no_argument, 0, 0 },
 132         { "lax"                       , share__no_argument, 0, 0 },
 133         { "replay-gain"               , share__no_argument, 0, 0 },
 134         { "sector-align"              , share__no_argument, 0, 0 },
 135         { "seekpoint"                 , share__required_argument, 0, 'S' },
 136         { "padding"                   , share__required_argument, 0, 'P' },
 137 #ifdef FLAC__HAS_OGG
 138         { "ogg"                       , share__no_argument, 0, 0 },
 139         { "serial-number"             , share__required_argument, 0, 0 },
 140 #endif
 141         { "blocksize"                 , share__required_argument, 0, 'b' },
 142         { "exhaustive-model-search"   , share__no_argument, 0, 'e' },
 143         { "max-lpc-order"             , share__required_argument, 0, 'l' },
 144         { "mid-side"                  , share__no_argument, 0, 'm' },
 145         { "adaptive-mid-side"         , share__no_argument, 0, 'M' },
 146         { "qlp-coeff-precision-search", share__no_argument, 0, 'p' },
 147         { "qlp-coeff-precision"       , share__required_argument, 0, 'q' },
 148         { "rice-partition-order"      , share__required_argument, 0, 'r' },
 149         { "endian"                    , share__required_argument, 0, 0 },
 150         { "channels"                  , share__required_argument, 0, 0 },
 151         { "bps"                       , share__required_argument, 0, 0 },
 152         { "sample-rate"               , share__required_argument, 0, 0 },
 153         { "sign"                      , share__required_argument, 0, 0 },
 154
 155         /*
 156          * analysis options
 157          */
 158         { "residual-gnu-plot", share__no_argument, 0, 0 },
 159         { "residual-text", share__no_argument, 0, 0 },
 160
 161         /*
 162          * negatives
 163          */
 164         { "no-decode-through-errors"  , share__no_argument, 0, 0 },
 165         { "no-silent"                 , share__no_argument, 0, 0 },
 166         { "no-force"                  , share__no_argument, 0, 0 },
 167         { "no-seektable"              , share__no_argument, 0, 0 },
 168         { "no-delete-input-file"      , share__no_argument, 0, 0 },
 169         { "no-replay-gain"            , share__no_argument, 0, 0 },
 170         { "no-sector-align"           , share__no_argument, 0, 0 },
 171         { "no-lax"                    , share__no_argument, 0, 0 },
 172 #ifdef FLAC__HAS_OGG
 173         { "no-ogg"                    , share__no_argument, 0, 0 },
 174 #endif
 175         { "no-exhaustive-model-search", share__no_argument, 0, 0 },
 176         { "no-mid-side"               , share__no_argument, 0, 0 },
 177         { "no-adaptive-mid-side"      , share__no_argument, 0, 0 },
 178         { "no-qlp-coeff-prec-search"  , share__no_argument, 0, 0 },
 179         { "no-padding"                , share__no_argument, 0, 0 },
 180         { "no-verify"                 , share__no_argument, 0, 0 },
 181         { "no-residual-gnuplot"       , share__no_argument, 0, 0 },
 182         { "no-residual-text"          , share__no_argument, 0, 0 },
 183         /*
 184          * undocumented debugging options for the test suite
 185          */
 186         { "disable-constant-subframes", share__no_argument, 0, 0 },
 187         { "disable-fixed-subframes"   , share__no_argument, 0, 0 },
 188         { "disable-verbatim-subframes", share__no_argument, 0, 0 },
 189
 190         {0, 0, 0, 0}
 191 };
 192
 193
 194 /*
 195  * global to hold command-line option values
 196  */
 197
 198 static struct {
 199         FLAC__bool show_help;
 200         FLAC__bool show_explain;
 201         FLAC__bool show_version;
 202         FLAC__bool mode_decode;
 203         FLAC__bool verify;
 204         FLAC__bool verbose;
 205         FLAC__bool force_file_overwrite;
 206         FLAC__bool continue_through_decode_errors;
 207         replaygain_synthesis_spec_t replaygain_synthesis_spec;
 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_aiff_format;
 221         FLAC__bool force_raw_format;
 222         FLAC__bool delete_input;
 223         FLAC__bool replay_gain;
 224         FLAC__bool sector_align;
 225         const char *cmdline_forced_outfilename;
 226         const char *output_prefix;
 227         analysis_options aopts;
 228         int padding;
 229         unsigned max_lpc_order;
 230         unsigned qlp_coeff_precision;
 231         const char *skip_specification;
 232         const char *until_specification;
 233         int format_is_big_endian;
 234         int format_is_unsigned_samples;
 235         int format_channels;
 236         int format_bps;
 237         int format_sample_rate;
 238         int blocksize;
 239         int min_residual_partition_order;
 240         int max_residual_partition_order;
 241         int rice_parameter_search_dist;
 242         char requested_seek_points[50000]; /* bad MAGIC NUMBER but buffer overflow is checked */
 243         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
 244         const char *cuesheet_filename;
 245         FLAC__bool cued_seekpoints;
 246
 247         unsigned num_files;
 248         char **filenames;
 249
 250         FLAC__StreamMetadata *vorbis_comment;
 251
 252         struct {
 253                 FLAC__bool disable_constant_subframes;
 254                 FLAC__bool disable_fixed_subframes;
 255                 FLAC__bool disable_verbatim_subframes;
 256         } debug;
 257 } option_values;
 258
 259
 260 /*
 261  * miscellaneous globals
 262  */
 263
 264 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
 265 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
 266 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
 267
 268
 269 int main(int argc, char *argv[])
 270 {
 271         int retval = 0;
 272
 273         setlocale(LC_ALL, "");
 274         if(!init_options()) {
 275                 fprintf(stderr, "ERROR: allocating memory\n");
 276                 retval = 1;
 277         }
 278         else {
 279                 if((retval = parse_options(argc, argv)) == 0)
 280                         retval = do_it();
 281         }
 282
 283         free_options();
 284
 285         return retval;
 286 }
 287
 288 int do_it()
 289 {
 290         int retval = 0;
 291
 292         if(option_values.show_version) {
 293                 show_version();
 294                 return 0;
 295         }
 296         else if(option_values.show_explain) {
 297                 show_explain();
 298                 return 0;
 299         }
 300         else if(option_values.show_help) {
 301                 show_help();
 302                 return 0;
 303         }
 304         else {
 305                 if(option_values.num_files == 0) {
 306                         short_usage();
 307                         return 0;
 308                 }
 309
 310                 /*
 311                  * tweak options; validate the values
 312                  */
 313                 if(!option_values.mode_decode) {
 314                         if(option_values.blocksize < 0) {
 315                                 if(option_values.max_lpc_order == 0)
 316                                         option_values.blocksize = 1152;
 317                                 else
 318                                         option_values.blocksize = 4608;
 319                         }
 320                         if(option_values.max_residual_partition_order < 0) {
 321                                 if(option_values.blocksize <= 1152)
 322                                         option_values.max_residual_partition_order = 2;
 323                                 else if(option_values.blocksize <= 2304)
 324                                         option_values.max_residual_partition_order = 3;
 325                                 else if(option_values.blocksize <= 4608)
 326                                         option_values.max_residual_partition_order = 3;
 327                                 else
 328                                         option_values.max_residual_partition_order = 4;
 329                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
 330                         }
 331                         if(option_values.rice_parameter_search_dist < 0) {
 332                                 option_values.rice_parameter_search_dist = 0;
 333                         }
 334                 }
 335                 else {
 336                         if(option_values.test_only) {
 337                                 if(0 != option_values.skip_specification)
 338                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
 339                                 if(0 != option_values.until_specification)
 340                                         return usage_error("ERROR: --until is not allowed in test mode\n");
 341                         }
 342                 }
 343
 344                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
 345
 346                 if(option_values.format_channels >= 0) {
 347                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
 348                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
 349                 }
 350                 if(option_values.format_bps >= 0) {
 351                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
 352                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
 353                 }
 354                 if(option_values.format_sample_rate >= 0) {
 355                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
 356                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
 357                 }
 358                 if(option_values.force_raw_format && option_values.force_aiff_format)
 359                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
 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) 2000,2001,2002,2003,2004 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 == outfilename) {
 500                                                 fprintf(stderr, "ERROR: filename too long: %s", option_values.filenames[i]);
 501                                                 return 1;
 502                                         }
 503                                         if(0 == strcmp(option_values.filenames[i], "-")) {
 504                                                 FLAC__ASSERT(0);
 505                                                 /* double protection */
 506                                                 fprintf(stderr, "internal error\n");
 507                                                 return 2;
 508                                         }
 509                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
 510                                                 fprintf(stderr, "%s: ERROR writing ReplayGain album tags\n", outfilename);
 511                                                 retval = 1;
 512                                         }
 513                                 }
 514                         }
 515                 }
 516         }
 517
 518         return retval;
 519 }
 520
 521 FLAC__bool init_options()
 522 {
 523         option_values.show_help = false;
 524         option_values.show_explain = false;
 525         option_values.mode_decode = false;
 526         option_values.verify = false;
 527         option_values.verbose = true;
 528         option_values.force_file_overwrite = false;
 529         option_values.continue_through_decode_errors = false;
 530         option_values.replaygain_synthesis_spec.apply = false;
 531         option_values.replaygain_synthesis_spec.use_album_gain = true;
 532         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
 533         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
 534         option_values.replaygain_synthesis_spec.preamp = 0.0;
 535         option_values.lax = false;
 536         option_values.test_only = false;
 537         option_values.analyze = false;
 538         option_values.use_ogg = false;
 539         option_values.has_serial_number = false;
 540         option_values.serial_number = 0;
 541         option_values.do_mid_side = true;
 542         option_values.loose_mid_side = false;
 543         option_values.do_exhaustive_model_search = false;
 544         option_values.do_escape_coding = false;
 545         option_values.do_qlp_coeff_prec_search = false;
 546         option_values.force_to_stdout = false;
 547         option_values.force_aiff_format = false;
 548         option_values.force_raw_format = false;
 549         option_values.delete_input = false;
 550         option_values.replay_gain = false;
 551         option_values.sector_align = false;
 552         option_values.cmdline_forced_outfilename = 0;
 553         option_values.output_prefix = 0;
 554         option_values.aopts.do_residual_text = false;
 555         option_values.aopts.do_residual_gnuplot = false;
 556         option_values.padding = 4096;
 557         option_values.max_lpc_order = 8;
 558         option_values.qlp_coeff_precision = 0;
 559         option_values.skip_specification = 0;
 560         option_values.until_specification = 0;
 561         option_values.format_is_big_endian = -1;
 562         option_values.format_is_unsigned_samples = -1;
 563         option_values.format_channels = -1;
 564         option_values.format_bps = -1;
 565         option_values.format_sample_rate = -1;
 566         option_values.blocksize = -1;
 567         option_values.min_residual_partition_order = -1;
 568         option_values.max_residual_partition_order = -1;
 569         option_values.rice_parameter_search_dist = -1;
 570         option_values.requested_seek_points[0] = '\0';
 571         option_values.num_requested_seek_points = -1;
 572         option_values.cuesheet_filename = 0;
 573         option_values.cued_seekpoints = true;
 574
 575         option_values.num_files = 0;
 576         option_values.filenames = 0;
 577
 578         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
 579                 return false;
 580
 581         option_values.debug.disable_constant_subframes = false;
 582         option_values.debug.disable_fixed_subframes = false;
 583         option_values.debug.disable_verbatim_subframes = false;
 584
 585         return true;
 586 }
 587
 588 int parse_options(int argc, char *argv[])
 589 {
 590         int short_option;
 591         int option_index = 1;
 592         FLAC__bool had_error = false;
 593         const char *short_opts = "0123456789ab:cdefFhHl:mMo:pP:q:r:sS:tT:vV";
 594
 595         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
 596                 switch (short_option) {
 597                         case 0: /* long option with no equivalent short option */
 598                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
 599                                 break;
 600                         case '?':
 601                         case ':':
 602                                 had_error = true;
 603                                 break;
 604                         default: /* short option */
 605                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
 606                                 break;
 607                 }
 608         }
 609
 610         if(had_error) {
 611                 return 1;
 612         }
 613
 614         FLAC__ASSERT(share__optind <= argc);
 615
 616         option_values.num_files = argc - share__optind;
 617
 618         if(option_values.num_files > 0) {
 619                 unsigned i = 0;
 620                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
 621                         die("out of memory allocating space for file names list");
 622                 while(share__optind < argc)
 623                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
 624         }
 625
 626         return 0;
 627 }
 628
 629 int parse_option(int short_option, const char *long_option, const char *option_argument)
 630 {
 631         char *p;
 632
 633         if(short_option == 0) {
 634                 FLAC__ASSERT(0 != long_option);
 635                 if(0 == strcmp(long_option, "delete-input-file")) {
 636                         option_values.delete_input = true;
 637                 }
 638                 else if(0 == strcmp(long_option, "output-prefix")) {
 639                         FLAC__ASSERT(0 != option_argument);
 640                         option_values.output_prefix = option_argument;
 641                 }
 642                 else if(0 == strcmp(long_option, "skip")) {
 643                         FLAC__ASSERT(0 != option_argument);
 644                         option_values.skip_specification = option_argument;
 645                 }
 646                 else if(0 == strcmp(long_option, "until")) {
 647                         FLAC__ASSERT(0 != option_argument);
 648                         option_values.until_specification = option_argument;
 649                 }
 650                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
 651                         option_values.replaygain_synthesis_spec.apply = true;
 652                         if (0 != option_argument) {
 653                                 char *p;
 654                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
 655                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
 656                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
 657                                 for ( ; *p; p++) {
 658                                         if (*p == 'a')
 659                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
 660                                         else if (*p == 't')
 661                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
 662                                         else if (*p == 'l')
 663                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
 664                                         else if (*p == 'L')
 665                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
 666                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
 667                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
 668                                                 p++;
 669                                         }
 670                                         else
 671                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
 672                                 }
 673                         }
 674                 }
 675                 else if(0 == strcmp(long_option, "cuesheet")) {
 676                         FLAC__ASSERT(0 != option_argument);
 677                         option_values.cuesheet_filename = option_argument;
 678                 }
 679                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
 680                         option_values.cued_seekpoints = false;
 681                 }
 682                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
 683                         option_values.lax = true;
 684                         option_values.do_exhaustive_model_search = true;
 685                         option_values.do_escape_coding = true;
 686                         option_values.do_mid_side = true;
 687                         option_values.loose_mid_side = false;
 688                         option_values.do_qlp_coeff_prec_search = true;
 689                         option_values.min_residual_partition_order = 0;
 690                         option_values.max_residual_partition_order = 16;
 691                         option_values.rice_parameter_search_dist = 0;
 692                         option_values.max_lpc_order = 32;
 693                 }
 694                 else if(0 == strcmp(long_option, "force-aiff-format")) {
 695                         option_values.force_aiff_format = true;
 696                 }
 697                 else if(0 == strcmp(long_option, "force-raw-format")) {
 698                         option_values.force_raw_format = true;
 699                 }
 700                 else if(0 == strcmp(long_option, "lax")) {
 701                         option_values.lax = true;
 702                 }
 703                 else if(0 == strcmp(long_option, "replay-gain")) {
 704                         option_values.replay_gain = true;
 705                 }
 706                 else if(0 == strcmp(long_option, "sector-align")) {
 707                         option_values.sector_align = true;
 708                 }
 709 #ifdef FLAC__HAS_OGG
 710                 else if(0 == strcmp(long_option, "ogg")) {
 711                         option_values.use_ogg = true;
 712                 }
 713                 else if(0 == strcmp(long_option, "serial-number")) {
 714                         option_values.has_serial_number = true;
 715                         option_values.serial_number = atol(option_argument);
 716                 }
 717 #endif
 718                 else if(0 == strcmp(long_option, "endian")) {
 719                         FLAC__ASSERT(0 != option_argument);
 720                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
 721                                 option_values.format_is_big_endian = true;
 722                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
 723                                 option_values.format_is_big_endian = false;
 724                         else
 725                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
 726                 }
 727                 else if(0 == strcmp(long_option, "channels")) {
 728                         FLAC__ASSERT(0 != option_argument);
 729                         option_values.format_channels = atoi(option_argument);
 730                 }
 731                 else if(0 == strcmp(long_option, "bps")) {
 732                         FLAC__ASSERT(0 != option_argument);
 733                         option_values.format_bps = atoi(option_argument);
 734                 }
 735                 else if(0 == strcmp(long_option, "sample-rate")) {
 736                         FLAC__ASSERT(0 != option_argument);
 737                         option_values.format_sample_rate = atoi(option_argument);
 738                 }
 739                 else if(0 == strcmp(long_option, "sign")) {
 740                         FLAC__ASSERT(0 != option_argument);
 741                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
 742                                 option_values.format_is_unsigned_samples = false;
 743                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
 744                                 option_values.format_is_unsigned_samples = true;
 745                         else
 746                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
 747                 }
 748                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
 749                         option_values.aopts.do_residual_gnuplot = true;
 750                 }
 751                 else if(0 == strcmp(long_option, "residual-text")) {
 752                         option_values.aopts.do_residual_text = true;
 753                 }
 754                 /*
 755                  * negatives
 756                  */
 757                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
 758                         option_values.continue_through_decode_errors = false;
 759                 }
 760                 else if(0 == strcmp(long_option, "no-silent")) {
 761                         option_values.verbose = true;
 762                 }
 763                 else if(0 == strcmp(long_option, "no-force")) {
 764                         option_values.force_file_overwrite = false;
 765                 }
 766                 else if(0 == strcmp(long_option, "no-seektable")) {
 767                         option_values.num_requested_seek_points = 0;
 768                         option_values.requested_seek_points[0] = '\0';
 769                 }
 770                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
 771                         option_values.delete_input = false;
 772                 }
 773                 else if(0 == strcmp(long_option, "no-replay-gain")) {
 774                         option_values.replay_gain = false;
 775                 }
 776                 else if(0 == strcmp(long_option, "no-sector-align")) {
 777                         option_values.sector_align = false;
 778                 }
 779                 else if(0 == strcmp(long_option, "no-lax")) {
 780                         option_values.lax = false;
 781                 }
 782 #ifdef FLAC__HAS_OGG
 783                 else if(0 == strcmp(long_option, "no-ogg")) {
 784                         option_values.use_ogg = false;
 785                 }
 786 #endif
 787                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
 788                         option_values.do_exhaustive_model_search = false;
 789                 }
 790                 else if(0 == strcmp(long_option, "no-mid-side")) {
 791                         option_values.do_mid_side = option_values.loose_mid_side = false;
 792                 }
 793                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
 794                         option_values.loose_mid_side = option_values.do_mid_side = false;
 795                 }
 796                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
 797                         option_values.do_qlp_coeff_prec_search = false;
 798                 }
 799                 else if(0 == strcmp(long_option, "no-padding")) {
 800                         option_values.padding = -1;
 801                 }
 802                 else if(0 == strcmp(long_option, "no-verify")) {
 803                         option_values.verify = false;
 804                 }
 805                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
 806                         option_values.aopts.do_residual_gnuplot = false;
 807                 }
 808                 else if(0 == strcmp(long_option, "no-residual-text")) {
 809                         option_values.aopts.do_residual_text = false;
 810                 }
 811                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
 812                         option_values.debug.disable_constant_subframes = true;
 813                 }
 814                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
 815                         option_values.debug.disable_fixed_subframes = true;
 816                 }
 817                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
 818                         option_values.debug.disable_verbatim_subframes = true;
 819                 }
 820         }
 821         else {
 822                 const char *violation;
 823                 switch(short_option) {
 824                         case 'h':
 825                                 option_values.show_help = true;
 826                                 break;
 827                         case 'H':
 828                                 option_values.show_explain = true;
 829                                 break;
 830                         case 'v':
 831                                 option_values.show_version = true;
 832                                 break;
 833                         case 'd':
 834                                 option_values.mode_decode = true;
 835                                 break;
 836                         case 'a':
 837                                 option_values.mode_decode = true;
 838                                 option_values.analyze = true;
 839                                 break;
 840                         case 't':
 841                                 option_values.mode_decode = true;
 842                                 option_values.test_only = true;
 843                                 break;
 844                         case 'c':
 845                                 option_values.force_to_stdout = true;
 846                                 break;
 847                         case 's':
 848                                 option_values.verbose = false;
 849                                 break;
 850                         case 'f':
 851                                 option_values.force_file_overwrite = true;
 852                                 break;
 853                         case 'o':
 854                                 FLAC__ASSERT(0 != option_argument);
 855                                 option_values.cmdline_forced_outfilename = option_argument;
 856                                 break;
 857                         case 'F':
 858                                 option_values.continue_through_decode_errors = true;
 859                                 break;
 860                         case 'T':
 861                                 FLAC__ASSERT(0 != option_argument);
 862                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
 863                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
 864                                 break;
 865                         case '0':
 866                                 option_values.do_exhaustive_model_search = false;
 867                                 option_values.do_escape_coding = false;
 868                                 option_values.do_mid_side = false;
 869                                 option_values.loose_mid_side = false;
 870                                 option_values.qlp_coeff_precision = 0;
 871                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 872                                 option_values.rice_parameter_search_dist = 0;
 873                                 option_values.max_lpc_order = 0;
 874                                 break;
 875                         case '1':
 876                                 option_values.do_exhaustive_model_search = false;
 877                                 option_values.do_escape_coding = false;
 878                                 option_values.do_mid_side = true;
 879                                 option_values.loose_mid_side = true;
 880                                 option_values.qlp_coeff_precision = 0;
 881                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 882                                 option_values.rice_parameter_search_dist = 0;
 883                                 option_values.max_lpc_order = 0;
 884                                 break;
 885                         case '2':
 886                                 option_values.do_exhaustive_model_search = false;
 887                                 option_values.do_escape_coding = false;
 888                                 option_values.do_mid_side = true;
 889                                 option_values.loose_mid_side = false;
 890                                 option_values.qlp_coeff_precision = 0;
 891                                 option_values.min_residual_partition_order = 0;
 892                                 option_values.max_residual_partition_order = 3;
 893                                 option_values.rice_parameter_search_dist = 0;
 894                                 option_values.max_lpc_order = 0;
 895                                 break;
 896                         case '3':
 897                                 option_values.do_exhaustive_model_search = false;
 898                                 option_values.do_escape_coding = false;
 899                                 option_values.do_mid_side = false;
 900                                 option_values.loose_mid_side = false;
 901                                 option_values.qlp_coeff_precision = 0;
 902                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 903                                 option_values.rice_parameter_search_dist = 0;
 904                                 option_values.max_lpc_order = 6;
 905                                 break;
 906                         case '4':
 907                                 option_values.do_exhaustive_model_search = false;
 908                                 option_values.do_escape_coding = false;
 909                                 option_values.do_mid_side = true;
 910                                 option_values.loose_mid_side = true;
 911                                 option_values.qlp_coeff_precision = 0;
 912                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 913                                 option_values.rice_parameter_search_dist = 0;
 914                                 option_values.max_lpc_order = 8;
 915                                 break;
 916                         case '5':
 917                                 option_values.do_exhaustive_model_search = false;
 918                                 option_values.do_escape_coding = false;
 919                                 option_values.do_mid_side = true;
 920                                 option_values.loose_mid_side = false;
 921                                 option_values.qlp_coeff_precision = 0;
 922                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 923                                 option_values.rice_parameter_search_dist = 0;
 924                                 option_values.max_lpc_order = 8;
 925                                 break;
 926                         case '6':
 927                                 option_values.do_exhaustive_model_search = false;
 928                                 option_values.do_escape_coding = false;
 929                                 option_values.do_mid_side = true;
 930                                 option_values.loose_mid_side = false;
 931                                 option_values.qlp_coeff_precision = 0;
 932                                 option_values.min_residual_partition_order = 0;
 933                                 option_values.max_residual_partition_order = 4;
 934                                 option_values.rice_parameter_search_dist = 0;
 935                                 option_values.max_lpc_order = 8;
 936                                 break;
 937                         case '7':
 938                                 option_values.do_exhaustive_model_search = true;
 939                                 option_values.do_escape_coding = false;
 940                                 option_values.do_mid_side = true;
 941                                 option_values.loose_mid_side = false;
 942                                 option_values.qlp_coeff_precision = 0;
 943                                 option_values.min_residual_partition_order = 0;
 944                                 option_values.max_residual_partition_order = 6;
 945                                 option_values.rice_parameter_search_dist = 0;
 946                                 option_values.max_lpc_order = 8;
 947                                 break;
 948                         case '8':
 949                                 option_values.do_exhaustive_model_search = true;
 950                                 option_values.do_escape_coding = false;
 951                                 option_values.do_mid_side = true;
 952                                 option_values.loose_mid_side = false;
 953                                 option_values.qlp_coeff_precision = 0;
 954                                 option_values.min_residual_partition_order = 0;
 955                                 option_values.max_residual_partition_order = 6;
 956                                 option_values.rice_parameter_search_dist = 0;
 957                                 option_values.max_lpc_order = 12;
 958                                 break;
 959                         case '9':
 960                                 return usage_error("ERROR: compression level '9' is reserved\n");
 961                         case 'V':
 962                                 option_values.verify = true;
 963                                 break;
 964                         case 'S':
 965                                 FLAC__ASSERT(0 != option_argument);
 966                                 if(option_values.num_requested_seek_points < 0)
 967                                         option_values.num_requested_seek_points = 0;
 968                                 option_values.num_requested_seek_points++;
 969                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
 970                                         return usage_error("ERROR: too many seekpoints requested\n");
 971                                 }
 972                                 else {
 973                                         strcat(option_values.requested_seek_points, option_argument);
 974                                         strcat(option_values.requested_seek_points, ";");
 975                                 }
 976                                 break;
 977                         case 'P':
 978                                 FLAC__ASSERT(0 != option_argument);
 979                                 option_values.padding = atoi(option_argument);
 980                                 if(option_values.padding < 0)
 981                                         return usage_error("ERROR: argument to -P must be >= 0\n");
 982                                 break;
 983                         case 'b':
 984                                 FLAC__ASSERT(0 != option_argument);
 985                                 option_values.blocksize = atoi(option_argument);
 986                                 break;
 987                         case 'e':
 988                                 option_values.do_exhaustive_model_search = true;
 989                                 break;
 990                         case 'E':
 991                                 option_values.do_escape_coding = true;
 992                                 break;
 993                         case 'l':
 994                                 FLAC__ASSERT(0 != option_argument);
 995                                 option_values.max_lpc_order = atoi(option_argument);
 996                                 break;
 997                         case 'm':
 998                                 option_values.do_mid_side = true;
 999                                 option_values.loose_mid_side = false;
1000                                 break;
1001                         case 'M':
1002                                 option_values.loose_mid_side = option_values.do_mid_side = true;
1003                                 break;
1004                         case 'p':
1005                                 option_values.do_qlp_coeff_prec_search = true;
1006                                 break;
1007                         case 'q':
1008                                 FLAC__ASSERT(0 != option_argument);
1009                                 option_values.qlp_coeff_precision = atoi(option_argument);
1010                                 break;
1011                         case 'r':
1012                                 FLAC__ASSERT(0 != option_argument);
1013                                 p = strchr(option_argument, ',');
1014                                 if(0 == p) {
1015                                         option_values.min_residual_partition_order = 0;
1016                                         option_values.max_residual_partition_order = atoi(option_argument);
1017                                 }
1018                                 else {
1019                                         option_values.min_residual_partition_order = atoi(option_argument);
1020                                         option_values.max_residual_partition_order = atoi(++p);
1021                                 }
1022                                 break;
1023                         case 'R':
1024                                 FLAC__ASSERT(0 != option_argument);
1025                                 option_values.rice_parameter_search_dist = atoi(option_argument);
1026                                 break;
1027                         default:
1028                                 FLAC__ASSERT(0);
1029                 }
1030         }
1031
1032         return 0;
1033 }
1034
1035 void free_options()
1036 {
1037         unsigned i;
1038         if(0 != option_values.filenames) {
1039                 for(i = 0; i < option_values.num_files; i++) {
1040                         if(0 != option_values.filenames[i])
1041                                 free(option_values.filenames[i]);
1042                 }
1043                 free(option_values.filenames);
1044         }
1045         if(0 != option_values.vorbis_comment)
1046                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1047 }
1048
1049 int usage_error(const char *message, ...)
1050 {
1051         va_list args;
1052
1053         FLAC__ASSERT(0 != message);
1054
1055         va_start(args, message);
1056
1057         (void) vfprintf(stderr, message, args);
1058
1059         va_end(args);
1060
1061         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1062
1063         return 1;
1064 }
1065
1066 void show_version()
1067 {
1068         printf("flac %s\n", FLAC__VERSION_STRING);
1069 }
1070
1071 static void usage_header()
1072 {
1073         printf("===============================================================================\n");
1074         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1075         printf("Copyright (C) 2000,2001,2002,2003,2004  Josh Coalson\n");
1076         printf("\n");
1077         printf("This program is free software; you can redistribute it and/or\n");
1078         printf("modify it under the terms of the GNU General Public License\n");
1079         printf("as published by the Free Software Foundation; either version 2\n");
1080         printf("of the License, or (at your option) any later version.\n");
1081         printf("\n");
1082         printf("This program is distributed in the hope that it will be useful,\n");
1083         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1084         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1085         printf("GNU General Public License for more details.\n");
1086         printf("\n");
1087         printf("You should have received a copy of the GNU General Public License\n");
1088         printf("along with this program; if not, write to the Free Software\n");
1089         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1090         printf("===============================================================================\n");
1091 }
1092
1093 static void usage_summary()
1094 {
1095         printf("Usage:\n");
1096         printf("\n");
1097         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1098         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1099         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1100         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1101         printf("\n");
1102 }
1103
1104 void short_usage()
1105 {
1106         usage_header();
1107         printf("\n");
1108         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1109         printf("instructions use 'flac --explain'\n");
1110         printf("\n");
1111         printf("To encode:\n");
1112         printf("  flac [-#] [INPUTFILE [...]]\n");
1113         printf("\n");
1114         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1115         printf("\n");
1116         printf("To decode:\n");
1117         printf("  flac -d [INPUTFILE [...]]\n");
1118         printf("\n");
1119         printf("To test:\n");
1120         printf("  flac -t [INPUTFILE [...]]\n");
1121 }
1122
1123 void show_help()
1124 {
1125         usage_header();
1126         usage_summary();
1127         printf("general options:\n");
1128         printf("  -v, --version                Show the flac version number\n");
1129         printf("  -h, --help                   Show this screen\n");
1130         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1131         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1132         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1133         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1134         printf("  -c, --stdout                 Write output to stdout\n");
1135         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1136         printf("  -f, --force                  Force overwriting of output files\n");
1137         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1138         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1139         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1140         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1141         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1142 #ifdef FLAC__HAS_OGG
1143         printf("      --ogg                    Use Ogg as transport layer\n");
1144         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1145 #endif
1146         printf("analysis options:\n");
1147         printf("      --residual-text          Include residual signal in text output\n");
1148         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1149         printf("decoding options:\n");
1150         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1151         printf("encoding options:\n");
1152         printf("  -V, --verify                 Verify a correct encoding\n");
1153         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1154         printf("      --sector-align           Align multiple files on sector boundaries\n");
1155         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1156         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1157         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1158         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1159         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1160         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1161         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1162         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1163         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1164         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1165         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1166         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1167         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1168         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1169         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1170         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1171         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1172         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1173         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1174         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1175         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1176         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1177         printf("format options:\n");
1178         printf("      --endian={big|little}    Set byte order for samples\n");
1179         printf("      --channels=#             Number of channels\n");
1180         printf("      --bps=#                  Number of bits per sample\n");
1181         printf("      --sample-rate=#          Sample rate in Hz\n");
1182         printf("      --sign={signed|unsigned} Sign of samples\n");
1183         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1184         printf("      --force-raw-format       Treat input or output as raw samples\n");
1185         printf("negative options:\n");
1186         printf("      --no-adaptive-mid-side\n");
1187         printf("      --no-decode-through-errors\n");
1188         printf("      --no-delete-input-file\n");
1189         printf("      --no-exhaustive-model-search\n");
1190         printf("      --no-lax\n");
1191         printf("      --no-mid-side\n");
1192 #ifdef FLAC__HAS_OGG
1193         printf("      --no-ogg\n");
1194 #endif
1195         printf("      --no-padding\n");
1196         printf("      --no-qlp-coeff-prec-search\n");
1197         printf("      --no-replay-gain\n");
1198         printf("      --no-residual-gnuplot\n");
1199         printf("      --no-residual-text\n");
1200         printf("      --no-sector-align\n");
1201         printf("      --no-seektable\n");
1202         printf("      --no-silent\n");
1203         printf("      --no-force\n");
1204         printf("      --no-verify\n");
1205 }
1206
1207 void show_explain()
1208 {
1209         usage_header();
1210         usage_summary();
1211         printf("For encoding:\n");
1212         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1213         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1214         printf("For decoding, the reverse is true.\n");
1215         printf("\n");
1216         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1217         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1218         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1219         printf("instead of:\n");
1220         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1221         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1222         printf("WAVE/AIFF header contents when necessary.\n");
1223         printf("\n");
1224         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1225         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1226         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1227         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1228         printf("files using -fr.\n");
1229         printf("\n");
1230         printf("general options:\n");
1231         printf("  -v, --version                Show the flac version number\n");
1232         printf("  -h, --help                   Show basic usage a list of all options\n");
1233         printf("  -H, --explain                Show this screen\n");
1234         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1235         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1236         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1237         printf("  -c, --stdout                 Write output to stdout\n");
1238         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1239         printf("  -f, --force                  Force overwriting of output files\n");
1240         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1241         printf("                               changes the extension.  May only be used when\n");
1242         printf("                               encoding a single file.  May not be used in\n");
1243         printf("                               conjunction with --output-prefix.\n");
1244         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1245         printf("                               STRING.  This can be useful for encoding or\n");
1246         printf("                               decoding files to a different directory.  Make\n");
1247         printf("                               sure if your STRING is a path name that it ends\n");
1248         printf("                               with a '/' slash.\n");
1249         printf("      --delete-input-file      Automatically delete the input file after a\n");
1250         printf("                               successful encode or decode.  If there was an\n");
1251         printf("                               error (including a verify error) the input file\n");
1252         printf("                               is left intact.\n");
1253         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1254         printf("                               be used both for encoding and decoding.  The\n");
1255         printf("                               alternative form mm:ss.ss can be used to specify\n");
1256         printf("                               minutes, seconds, and fractions of a second.\n");
1257         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1258         printf("                               file.  The given sample number is not included\n");
1259         printf("                               in the decoded output.  The alternative form\n");
1260         printf("                               mm:ss.ss can be used to specify minutes,\n");
1261         printf("                               seconds, and fractions of a second.  If a `+'\n");
1262         printf("                               sign is at the beginning, the --until point is\n");
1263         printf("                               relative to the --skip point.  If a `-' sign is\n");
1264         printf("                               at the beginning, the --until point is relative\n");
1265         printf("                               to end of the audio.\n");
1266 #ifdef FLAC__HAS_OGG
1267         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1268         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1269         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1270         printf("                               resulting file should have an '.ogg' extension\n");
1271         printf("                               and will still be decodable by flac.  When\n");
1272         printf("                               decoding, force the input to be treated as\n");
1273         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1274         printf("                               from stdin or when the filename does not end in\n");
1275         printf("                               '.ogg'.\n");
1276         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1277         printf("                               encoding and no serial number is given, flac\n");
1278         printf("                               uses '0'.  When decoding and no number is\n");
1279         printf("                               given, flac uses the serial number of the first\n");
1280         printf("                               page.\n");
1281 #endif
1282         printf("analysis options:\n");
1283         printf("      --residual-text          Include residual signal in text output.  This\n");
1284         printf("                               will make the file very big, much larger than\n");
1285         printf("                               even the decoded file.\n");
1286         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1287         printf("                               of each subframe\n");
1288         printf("decoding options:\n");
1289         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1290         printf("                               and removes the partially decoded file if it\n");
1291         printf("                               encounters a bitstream error.  With -F, errors\n");
1292         printf("                               are still printed but flac will continue\n");
1293         printf("                               decoding to completion.  Note that errors may\n");
1294         printf("                               cause the decoded audio to be missing some\n");
1295         printf("                               samples or have silent sections.\n");
1296         printf("encoding options:\n");
1297         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1298         printf("                               output in parallel and comparing to the\n");
1299         printf("                               original\n");
1300         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1301         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1302         printf("                               on sector boundaries.\n");
1303         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1304         printf("                               comments.  Title gains/peaks will be computed\n");
1305         printf("                               for each file, and an album gain/peak will be\n");
1306         printf("                               computed for all files.  All input files must\n");
1307         printf("                               have the same resolution, sample rate, and\n");
1308         printf("                               number of channels.  The sample rate must be\n");
1309         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1310         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1311         printf("                               few extra bytes in the PADDING block.\n");
1312         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1313         printf("                               a CUESHEET metadata block.  This option may only\n");
1314         printf("                               be used when encoding a single file.  A\n");
1315         printf("                               seekpoint will be added for each index point in\n");
1316         printf("                               the cuesheet to the SEEKTABLE unless\n");
1317         printf("                               --no-cued-seekpoints is specified.\n");
1318         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1319         printf("                               comment if necessary.  This option may appear\n");
1320         printf("                               more than once to add several comments.  NOTE:\n");
1321         printf("                               all tags will be added to all encoded files.\n");
1322         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1323         printf("       #  : a specific sample number for a seek point\n");
1324         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1325         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1326         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1327         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1328         printf("           ified union of all such values.\n");
1329         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1330         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1331         printf("           input size before starting.\n");
1332         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1333         printf("           either no seek point entered (if the input size is determinable\n");
1334         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1335         printf("           determinable)\n");
1336         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1337         printf("                               block of the given length (in bytes) after the\n");
1338         printf("                               STREAMINFO block.  This is useful if you plan\n");
1339         printf("                               to tag the file later with an APPLICATION\n");
1340         printf("                               block; instead of having to rewrite the entire\n");
1341         printf("                               file later just to insert your block, you can\n");
1342         printf("                               write directly over the PADDING block.  Note\n");
1343         printf("                               that the total length of the PADDING block will\n");
1344         printf("                               be 4 bytes longer than the length given because\n");
1345         printf("                               of the 4 metadata block header bytes.  You can\n");
1346         printf("                               force no PADDING block at all to be written with\n");
1347         printf("                               --no-padding.  The encoder writes a PADDING\n");
1348         printf("                               block of 4096 bytes by default.\n");
1349         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1350         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1351         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1352         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1353         printf("                               used)\n");
1354         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1355         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1356         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1357         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1358         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1359         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1360         printf("                                     -5 is the default setting\n");
1361         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1362         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1363         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1364         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1365         printf("                                     (stereo only)\n");
1366         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1367         printf("                                     (stereo only)\n");
1368         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1369         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1370         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1371         printf("                                     quantization (expensive!); overrides -q;\n");
1372         printf("                                     does nothing if using -l 0\n");
1373         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1374         printf("                                     linear-predictor coefficients; 0 => let\n");
1375         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1376         printf("                                     default is -q 0)\n");
1377         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1378         printf("                                     (# is 0..16; min defaults to 0; the\n");
1379         printf("                                     default is -r 0; above 4 doesn't usually\n");
1380         printf("                                     help much)\n");
1381         printf("format options:\n");
1382         printf("      --endian={big|little}    Set byte order for samples\n");
1383         printf("      --channels=#             Number of channels\n");
1384         printf("      --bps=#                  Number of bits per sample\n");
1385         printf("      --sample-rate=#          Sample rate in Hz\n");
1386         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1387         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1388         printf("                               option is not needed if the output filename (as\n");
1389         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1390         printf("                               has no effect when encoding since input AIFF is\n");
1391         printf("                               auto-detected.\n");
1392         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1393         printf("                               decoding) to be treated as raw samples\n");
1394         printf("negative options:\n");
1395         printf("      --no-adaptive-mid-side\n");
1396         printf("      --no-decode-through-errors\n");
1397         printf("      --no-delete-input-file\n");
1398         printf("      --no-exhaustive-model-search\n");
1399         printf("      --no-lax\n");
1400         printf("      --no-mid-side\n");
1401 #ifdef FLAC__HAS_OGG
1402         printf("      --no-ogg\n");
1403 #endif
1404         printf("      --no-padding\n");
1405         printf("      --no-qlp-coeff-prec-search\n");
1406         printf("      --no-residual-gnuplot\n");
1407         printf("      --no-residual-text\n");
1408         printf("      --no-sector-align\n");
1409         printf("      --no-seektable\n");
1410         printf("      --no-silent\n");
1411         printf("      --no-force\n");
1412         printf("      --no-verify\n");
1413 }
1414
1415 void
1416 format_mistake(const char *infilename, const char *wrong, const char *right)
1417 {
1418         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1419 }
1420
1421 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1422 {
1423         FILE *encode_infile;
1424         FLAC__byte lookahead[12];
1425         unsigned lookahead_length = 0;
1426         FileFormat fmt= RAW;
1427         int retval;
1428         long infilesize;
1429         encode_options_t common_options;
1430         const char *outfilename = get_encoded_outfilename(infilename);
1431
1432         if(0 == outfilename) {
1433                 fprintf(stderr, "ERROR: filename too long: %s", infilename);
1434                 return 1;
1435         }
1436
1437         /*
1438          * Error if output file already exists (and -f not used).
1439          * Use grabbag__file_get_filesize() as a cheap way to check.
1440          */
1441         if(!option_values.test_only && !option_values.force_file_overwrite && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1442                 fprintf(stderr, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1443                 return 1;
1444         }
1445
1446         if(0 == strcmp(infilename, "-")) {
1447                 infilesize = -1;
1448                 encode_infile = grabbag__file_get_binary_stdin();
1449         }
1450         else {
1451                 infilesize = grabbag__file_get_filesize(infilename);
1452                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1453                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1454                         return 1;
1455                 }
1456         }
1457
1458         if(!option_values.force_raw_format) {
1459                 /* first set format based on name */
1460                 if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1461                         fmt= WAV;
1462                 else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1463                         fmt= AIF;
1464                 else if(strlen(infilename) >= 5 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1465                         fmt= AIF;
1466
1467                 /* attempt to guess the file type based on the first 12 bytes */
1468                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1469                         if(fmt != RAW)
1470                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1471                         fmt= RAW;
1472                 }
1473                 else {
1474                         if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1475                                 fmt= WAV;
1476                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1477                                 fmt= AIF;
1478                         else {
1479                                 if(fmt != RAW)
1480                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1481                                 fmt= RAW;
1482                         }
1483                 }
1484         }
1485
1486         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1487                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1488                 return 1;
1489         }
1490
1491         if(fmt == RAW) {
1492                 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)
1493                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1494         }
1495
1496         if(encode_infile == stdin || option_values.force_to_stdout) {
1497                 if(option_values.replay_gain)
1498                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1499         }
1500
1501         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1502                 return usage_error("ERROR: invalid value for --skip\n");
1503
1504         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 */
1505                 return usage_error("ERROR: invalid value for --until\n");
1506         /* if there is no "--until" we want to default to "--until=-0" */
1507         if(0 == option_values.until_specification)
1508                 common_options.until_specification.is_relative = true;
1509
1510         common_options.verbose = option_values.verbose;
1511         common_options.verify = option_values.verify;
1512 #ifdef FLAC__HAS_OGG
1513         common_options.use_ogg = option_values.use_ogg;
1514         /* set a random serial number if one has not yet been specified */
1515         if(!option_values.has_serial_number) {
1516                 srand(time(0));
1517                 option_values.serial_number = rand();
1518                 option_values.has_serial_number = true;
1519         }
1520         common_options.serial_number = option_values.serial_number++;
1521 #endif
1522         common_options.lax = option_values.lax;
1523         common_options.do_mid_side = option_values.do_mid_side;
1524         common_options.loose_mid_side = option_values.loose_mid_side;
1525         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1526         common_options.do_escape_coding = option_values.do_escape_coding;
1527         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1528         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1529         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1530         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1531         common_options.max_lpc_order = option_values.max_lpc_order;
1532         common_options.blocksize = (unsigned)option_values.blocksize;
1533         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1534         common_options.padding = option_values.padding;
1535         common_options.requested_seek_points = option_values.requested_seek_points;
1536         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1537         common_options.cuesheet_filename = option_values.cuesheet_filename;
1538         common_options.cued_seekpoints = option_values.cued_seekpoints;
1539         common_options.is_first_file = is_first_file;
1540         common_options.is_last_file = is_last_file;
1541         common_options.align_reservoir = align_reservoir;
1542         common_options.align_reservoir_samples = &align_reservoir_samples;
1543         common_options.replay_gain = option_values.replay_gain;
1544         common_options.sector_align = option_values.sector_align;
1545         common_options.vorbis_comment = option_values.vorbis_comment;
1546         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1547         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1548         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1549
1550         if(fmt == RAW) {
1551                 raw_encode_options_t options;
1552
1553                 options.common = common_options;
1554                 options.is_big_endian = option_values.format_is_big_endian;
1555                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1556                 options.channels = option_values.format_channels;
1557                 options.bps = option_values.format_bps;
1558                 options.sample_rate = option_values.format_sample_rate;
1559
1560                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1561         }
1562         else {
1563                 wav_encode_options_t options;
1564
1565                 options.common = common_options;
1566
1567                 if(fmt == AIF)
1568                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1569                 else
1570                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1571         }
1572
1573         if(retval == 0 && strcmp(infilename, "-")) {
1574                 if(strcmp(outfilename, "-")) {
1575                         if(option_values.replay_gain) {
1576                                 float title_gain, title_peak;
1577                                 const char *error;
1578                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1579                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1580                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1581                                 }
1582                         }
1583                         grabbag__file_copy_metadata(infilename, outfilename);
1584                 }
1585                 if(option_values.delete_input)
1586                         unlink(infilename);
1587         }
1588
1589         return retval;
1590 }
1591
1592 int decode_file(const char *infilename)
1593 {
1594         int retval;
1595         FLAC__bool treat_as_ogg = false;
1596         decode_options_t common_options;
1597         const char *outfilename = get_decoded_outfilename(infilename);
1598
1599         if(0 == outfilename) {
1600                 fprintf(stderr, "ERROR: filename too long: %s", infilename);
1601                 return 1;
1602         }
1603
1604         /*
1605          * Error if output file already exists (and -f not used).
1606          * Use grabbag__file_get_filesize() as a cheap way to check.
1607          */
1608         if(!option_values.test_only && !option_values.force_file_overwrite && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1609                 fprintf(stderr, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1610                 return 1;
1611         }
1612
1613         if(!option_values.test_only && !option_values.analyze) {
1614                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1615                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1616         }
1617
1618         if(option_values.use_ogg)
1619                 treat_as_ogg = true;
1620         else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1621                 treat_as_ogg = true;
1622         else
1623                 treat_as_ogg = false;
1624
1625 #ifndef FLAC__HAS_OGG
1626         if(treat_as_ogg) {
1627                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1628                 return 1;
1629         }
1630 #endif
1631
1632         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1633                 return usage_error("ERROR: invalid value for --skip\n");
1634
1635         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 */
1636                 return usage_error("ERROR: invalid value for --until\n");
1637         /* if there is no "--until" we want to default to "--until=-0" */
1638         if(0 == option_values.until_specification)
1639                 common_options.until_specification.is_relative = true;
1640
1641         common_options.verbose = option_values.verbose;
1642         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1643         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1644 #ifdef FLAC__HAS_OGG
1645         common_options.is_ogg = treat_as_ogg;
1646         common_options.use_first_serial_number = !option_values.has_serial_number;
1647         common_options.serial_number = option_values.serial_number;
1648 #endif
1649
1650         if(!option_values.force_raw_format) {
1651                 wav_decode_options_t options;
1652
1653                 options.common = common_options;
1654
1655                 if(
1656                         option_values.force_aiff_format ||
1657                         (strlen(outfilename) >= 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1658                         (strlen(outfilename) >= 5 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1659                 )
1660                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1661                 else
1662                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1663         }
1664         else {
1665                 raw_decode_options_t options;
1666
1667                 options.common = common_options;
1668                 options.is_big_endian = option_values.format_is_big_endian;
1669                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1670
1671                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1672         }
1673
1674         if(retval == 0 && strcmp(infilename, "-")) {
1675                 if(strcmp(outfilename, "-"))
1676                         grabbag__file_copy_metadata(infilename, outfilename);
1677                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1678                         unlink(infilename);
1679         }
1680
1681         return retval;
1682 }
1683
1684 const char *get_encoded_outfilename(const char *infilename)
1685 {
1686         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1687         return get_outfilename(infilename, suffix);
1688 }
1689
1690 const char *get_decoded_outfilename(const char *infilename)
1691 {
1692         const char *suffix;
1693         if(option_values.analyze) {
1694                 suffix = ".ana";
1695         }
1696         else if(option_values.force_raw_format) {
1697                 suffix = ".raw";
1698         }
1699         else if(option_values.force_aiff_format) {
1700                 suffix = ".aiff";
1701         }
1702         else {
1703                 suffix = ".wav";
1704         }
1705         return get_outfilename(infilename, suffix);
1706 }
1707
1708 const char *get_outfilename(const char *infilename, const char *suffix)
1709 {
1710         if(0 == option_values.cmdline_forced_outfilename) {
1711                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1712
1713                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1714                         strcpy(buffer, "-");
1715                 }
1716                 else {
1717                         char *p;
1718                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
1719                                 return 0;
1720                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
1721                                 return 0;
1722                         if(0 == (p = strrchr(buffer, '.'))) {
1723                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1724                                         return 0;
1725                         }
1726                         else {
1727                                 if(0 == strcmp(p, suffix)) {
1728                                         *p = '\0';
1729                                         if (flac__strlcat(buffer, "_new", sizeof buffer) >= sizeof buffer)
1730                                                 return 0;
1731                                 }
1732                                 else {
1733                                         *p = '\0';
1734                                 }
1735                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1736                                         return 0;
1737                         }
1738                 }
1739                 return buffer;
1740         }
1741         else
1742                 return option_values.cmdline_forced_outfilename;
1743 }
1744
1745 void die(const char *message)
1746 {
1747         FLAC__ASSERT(0 != message);
1748         fprintf(stderr, "ERROR: %s\n", message);
1749         exit(1);
1750 }
1751
1752 char *local_strdup(const char *source)
1753 {
1754         char *ret;
1755         FLAC__ASSERT(0 != source);
1756         if(0 == (ret = strdup(source)))
1757                 die("out of memory during strdup()");
1758         return ret;
1759 }