src/flac/main.c

   1 /* flac - Command-line FLAC encoder/decoder
   2  * Copyright (C) 2000,2001,2002  Josh Coalson
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #include <ctype.h>
  20 #include <stdarg.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #if !defined _MSC_VER && !defined __MINGW32__
  25 /* unlink is in stdio.h in VC++ */
  26 #include <unistd.h> /* for unlink() */
  27 #else
  28 #define strcasecmp stricmp
  29 #endif
  30 #include "FLAC/all.h"
  31 #include "analyze.h"
  32 #include "decode.h"
  33 #include "encode.h"
  34 #include "file.h"
  35
  36 #if 0
  37 /*[JEC] was:#if HAVE_GETOPT_LONG*/
  38 /*[JEC] see flac/include/share/getopt.h as to why the change */
  39 #  include <getopt.h>
  40 #else
  41 #  include "share/getopt.h"
  42 #endif
  43
  44 typedef enum { RAW, WAV, AIF } FileFormat;
  45
  46 static int do_it();
  47
  48 static void init_options();
  49 static int parse_options(int argc, char *argv[]);
  50 static int parse_option(int short_option, const char *long_option, const char *option_argument);
  51 static void free_options();
  52
  53 static int usage_error(const char *message, ...);
  54 static void short_usage();
  55 static void show_help();
  56 static void show_explain();
  57 static void format_mistake(const char *infilename, const char *wrong, const char *right);
  58
  59 static int encode_file(const char *infilename, const char *forced_outfilename, FLAC__bool is_last_file);
  60 static int decode_file(const char *infilename, const char *forced_outfilename);
  61
  62 static void die(const char *message);
  63 static char *local_strdup(const char *source);
  64
  65
  66 /*
  67  * FLAC__share__getopt format struct; note that for long options with no
  68  * short option equivalent we just set the 'val' field to 0.
  69  */
  70 static struct FLAC__share__option long_options_[] = {
  71         /*
  72          * general options
  73          */
  74         { "help", 0, 0, 'h' },
  75         { "decode", 0, 0, 'd' },
  76         { "analyze", 0, 0, 'a' },
  77         { "test", 0, 0, 't' },
  78         { "stdout", 0, 0, 'c' },
  79         { "silent", 0, 0, 's' },
  80         { "delete-input-file", 0, 0, 0 },
  81         { "output-prefix", 1, 0, 0 },
  82         { "output-name", 1, 0, 'o' },
  83         { "skip", 1, 0, 0 },
  84
  85         /*
  86          * decoding options
  87          */
  88         { "decode-through-errors", 0, 0, 'F' },
  89
  90         /*
  91          * encoding options
  92          */
  93         { "compression-level-0", 0, 0, '0' },
  94         { "compression-level-1", 0, 0, '1' },
  95         { "compression-level-2", 0, 0, '2' },
  96         { "compression-level-3", 0, 0, '3' },
  97         { "compression-level-4", 0, 0, '4' },
  98         { "compression-level-5", 0, 0, '5' },
  99         { "compression-level-6", 0, 0, '6' },
 100         { "compression-level-7", 0, 0, '7' },
 101         { "compression-level-8", 0, 0, '8' },
 102         { "compression-level-9", 0, 0, '9' },
 103         { "best", 0, 0, '8' },
 104         { "fast", 0, 0, '0' },
 105         { "super-secret-impractical-compression-level", 0, 0, 0 },
 106         { "verify", 0, 0, 'V' },
 107         { "force-raw-input", 0, 0, 0 },
 108         { "lax", 0, 0, 0 },
 109         { "sector-align", 0, 0, 0 },
 110         { "seekpoint", 1, 0, 'S' },
 111         { "padding", 1, 0, 'P' },
 112 #ifdef FLAC__HAS_OGG
 113         { "ogg", 0, 0, 0 },
 114 #endif
 115         { "blocksize", 1, 0, 'b' },
 116         { "exhaustive-model-search", 0, 0, 'e' },
 117 #if 0
 118         /* @@@ deprecated: */
 119         { "escape-coding", 0, 0, 'E' },
 120 #endif
 121         { "max-lpc-order", 1, 0, 'l' },
 122         { "mid-side", 0, 0, 'm' },
 123         { "adaptive-mid-side", 0, 0, 'M' },
 124         { "qlp-coeff-precision-search", 0, 0, 'p' },
 125         { "qlp-coeff-precision", 1, 0, 'q' },
 126         { "rice-partition-order", 1, 0, 'r' },
 127 #if 0
 128         /* @@@ deprecated: */
 129         { "rice-parameter-search-distance", 1, 0, 'R' },
 130 #endif
 131         { "endian", 1, 0, 0 },
 132         { "channels", 1, 0, 0 },
 133         { "bps", 1, 0, 0 },
 134         { "sample-rate", 1, 0, 0 },
 135         { "sign", 1, 0, 0 },
 136
 137         /*
 138          * analysis options
 139          */
 140         { "residual-gnu-plot", 0, 0, 0 },
 141         { "residual-text", 0, 0, 0 },
 142
 143         /*
 144          * negatives
 145          */
 146         { "no-decode-through-errors", 0, 0, 0 },
 147         { "no-silent", 0, 0, 0 },
 148         { "no-seektable", 0, 0, 0 },
 149         { "no-delete-input-file", 0, 0, 0 },
 150         { "no-sector-align", 0, 0, 0 },
 151         { "no-lax", 0, 0, 0 },
 152 #ifdef FLAC__HAS_OGG
 153         { "no-ogg", 0, 0, 0 },
 154 #endif
 155         { "no-exhaustive-model-search", 0, 0, 0 },
 156 #if 0
 157         /* @@@ deprecated: */
 158         { "no-escape-coding", 0, 0, 0 },
 159 #endif
 160         { "no-mid-side", 0, 0, 0 },
 161         { "no-adaptive-mid-side", 0, 0, 0 },
 162         { "no-qlp-coeff-prec-search", 0, 0, 0 },
 163         { "no-padding", 0, 0, 0 },
 164         { "no-verify", 0, 0, 0 },
 165         { "no-residual-gnuplot", 0, 0, 0 },
 166         { "no-residual-text", 0, 0, 0 },
 167
 168         {0, 0, 0, 0}
 169 };
 170
 171
 172 /*
 173  * global to hold command-line option values
 174  */
 175
 176 static struct {
 177         FLAC__bool show_help;
 178         FLAC__bool show_explain;
 179         FLAC__bool mode_decode;
 180         FLAC__bool verify;
 181         FLAC__bool verbose;
 182         FLAC__bool continue_through_decode_errors;
 183         FLAC__bool lax;
 184         FLAC__bool test_only;
 185         FLAC__bool analyze;
 186         FLAC__bool use_ogg;
 187         FLAC__bool do_mid_side;
 188         FLAC__bool loose_mid_side;
 189         FLAC__bool do_exhaustive_model_search;
 190         FLAC__bool do_escape_coding;
 191         FLAC__bool do_qlp_coeff_prec_search;
 192         FLAC__bool force_to_stdout;
 193         FLAC__bool force_raw_format;
 194         FLAC__bool delete_input;
 195         FLAC__bool sector_align;
 196         const char *cmdline_forced_outfilename;
 197         const char *output_prefix;
 198         analysis_options aopts;
 199         int padding;
 200         unsigned max_lpc_order;
 201         unsigned qlp_coeff_precision;
 202         FLAC__uint64 skip;
 203         int format_is_big_endian;
 204         int format_is_unsigned_samples;
 205         int format_channels;
 206         int format_bps;
 207         int format_sample_rate;
 208         int blocksize;
 209         int min_residual_partition_order;
 210         int max_residual_partition_order;
 211         int rice_parameter_search_dist;
 212         char requested_seek_points[50000]; /* @@@ bad MAGIC NUMBER */
 213         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
 214
 215         unsigned num_files;
 216         char **filenames;
 217 } option_values;
 218
 219
 220 /*
 221  * miscellaneous globals
 222  */
 223
 224 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
 225 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
 226 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
 227
 228 static const char *flac_suffix = ".flac", *ogg_suffix = ".ogg";
 229
 230
 231 int main(int argc, char *argv[])
 232 {
 233         int retval = 0;
 234
 235         init_options();
 236
 237         if((retval = parse_options(argc, argv)) == 0)
 238                 retval = do_it();
 239
 240         free_options();
 241
 242         return retval;
 243 }
 244
 245 int do_it()
 246 {
 247         int retval = 0;
 248
 249         if(option_values.show_explain) {
 250                 show_explain();
 251                 return 0;
 252         }
 253         else if(option_values.show_help) {
 254                 show_help();
 255                 return 0;
 256         }
 257         else {
 258                 if(option_values.num_files == 0) {
 259                         short_usage();
 260                         return 0;
 261                 }
 262
 263                 /*
 264                  * tweak options; validate the values
 265                  */
 266                 if(!option_values.mode_decode) {
 267                         if(option_values.blocksize < 0) {
 268                                 if(option_values.max_lpc_order == 0)
 269                                         option_values.blocksize = 1152;
 270                                 else
 271                                         option_values.blocksize = 4608;
 272                         }
 273                         if(option_values.max_residual_partition_order < 0) {
 274                                 if(option_values.blocksize <= 1152)
 275                                         option_values.max_residual_partition_order = 2;
 276                                 else if(option_values.blocksize <= 2304)
 277                                         option_values.max_residual_partition_order = 3;
 278                                 else if(option_values.blocksize <= 4608)
 279                                         option_values.max_residual_partition_order = 3;
 280                                 else
 281                                         option_values.max_residual_partition_order = 4;
 282                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
 283                         }
 284                         if(option_values.rice_parameter_search_dist < 0) {
 285                                 option_values.rice_parameter_search_dist = 0;
 286                         }
 287                 }
 288                 else {
 289                         if(option_values.test_only) {
 290                                 if(option_values.skip > 0)
 291                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
 292                         }
 293                 }
 294
 295                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
 296
 297                 if(option_values.format_channels >= 0) {
 298                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
 299                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
 300                 }
 301                 if(option_values.format_bps >= 0) {
 302                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
 303                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
 304                 }
 305                 if(option_values.format_sample_rate >= 0) {
 306                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
 307                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
 308                 }
 309                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
 310                         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);
 311                 }
 312                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
 313                         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);
 314                 }
 315
 316                 if(option_values.sector_align) {
 317                         if(option_values.mode_decode)
 318                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
 319                         else if(option_values.skip > 0)
 320                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
 321                         else if(option_values.format_channels >= 0 && option_values.format_channels != 2)
 322                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
 323                         else if(option_values.format_bps >= 0 && option_values.format_bps != 16)
 324                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
 325                         else if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
 326                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
 327                 }
 328                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
 329                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
 330                 }
 331                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
 332                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
 333                 }
 334         }
 335         if(option_values.verbose) {
 336                 fprintf(stderr, "\n");
 337                 fprintf(stderr, "flac %s, Copyright (C) 2000,2001,2002 Josh Coalson\n", FLAC__VERSION_STRING);
 338                 fprintf(stderr, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
 339                 fprintf(stderr, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
 340
 341                 if(!option_values.mode_decode) {
 342                         char padopt[16];
 343                         if(option_values.padding < 0)
 344                                 strcpy(padopt, "-");
 345                         else
 346                                 sprintf(padopt, " %d", option_values.padding);
 347                         fprintf(stderr,
 348                                 "options:%s%s"
 349 #ifdef FLAC__HAS_OGG
 350                                 "%s"
 351 #endif
 352                                 "%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
 353                                 option_values.delete_input?" --delete-input-file":"",
 354                                 option_values.sector_align?" --sector-align":"",
 355 #ifdef FLAC__HAS_OGG
 356                                 option_values.use_ogg?" --ogg":"",
 357 #endif
 358                                 option_values.lax?" --lax":"",
 359                                 padopt,
 360                                 (unsigned)option_values.blocksize,
 361                                 option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
 362                                 option_values.max_lpc_order,
 363                                 option_values.do_exhaustive_model_search?" -e":"",
 364                                 option_values.do_escape_coding?" -E":"",
 365                                 option_values.do_qlp_coeff_prec_search?" -p":"",
 366                                 option_values.qlp_coeff_precision,
 367                                 (unsigned)option_values.min_residual_partition_order,
 368                                 (unsigned)option_values.max_residual_partition_order,
 369                                 option_values.verify? " -V":""
 370                         );
 371                 }
 372         }
 373
 374         if(option_values.mode_decode) {
 375                 FLAC__bool first = true;
 376
 377                 if(option_values.num_files == 0) {
 378                         retval = decode_file("-", 0);
 379                 }
 380                 else {
 381                         unsigned i;
 382                         if(option_values.num_files > 1)
 383                                 option_values.cmdline_forced_outfilename = 0;
 384                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 385                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 386                                         continue;
 387                                 retval |= decode_file(option_values.filenames[i], 0);
 388                                 first = false;
 389                         }
 390                 }
 391         }
 392         else { /* encode */
 393                 FLAC__bool first = true;
 394
 395                 if(option_values.num_files == 0) {
 396                         retval = encode_file("-", 0, true);
 397                 }
 398                 else {
 399                         unsigned i;
 400                         if(option_values.num_files > 1)
 401                                 option_values.cmdline_forced_outfilename = 0;
 402                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
 403                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
 404                                         continue;
 405                                 retval |= encode_file(option_values.filenames[i], 0, i == (option_values.num_files-1));
 406                                 first = false;
 407                         }
 408                 }
 409         }
 410
 411         return retval;
 412 }
 413
 414 void init_options()
 415 {
 416         option_values.show_help = false;
 417         option_values.show_explain = false;
 418         option_values.mode_decode = false;
 419         option_values.verify = false;
 420         option_values.verbose = true;
 421         option_values.continue_through_decode_errors = false;
 422         option_values.lax = false;
 423         option_values.test_only = false;
 424         option_values.analyze = false;
 425         option_values.use_ogg = false;
 426         option_values.do_mid_side = true;
 427         option_values.loose_mid_side = false;
 428         option_values.do_exhaustive_model_search = false;
 429         option_values.do_escape_coding = false;
 430         option_values.do_qlp_coeff_prec_search = false;
 431         option_values.force_to_stdout = false;
 432         option_values.force_raw_format = false;
 433         option_values.delete_input = false;
 434         option_values.sector_align = false;
 435         option_values.cmdline_forced_outfilename = 0;
 436         option_values.output_prefix = 0;
 437         option_values.aopts.do_residual_text = false;
 438         option_values.aopts.do_residual_gnuplot = false;
 439         option_values.padding = -1;
 440         option_values.max_lpc_order = 8;
 441         option_values.qlp_coeff_precision = 0;
 442         option_values.skip = 0;
 443         option_values.format_is_big_endian = -1;
 444         option_values.format_is_unsigned_samples = false;
 445         option_values.format_channels = -1;
 446         option_values.format_bps = -1;
 447         option_values.format_sample_rate = -1;
 448         option_values.blocksize = -1;
 449         option_values.min_residual_partition_order = -1;
 450         option_values.max_residual_partition_order = -1;
 451         option_values.rice_parameter_search_dist = -1;
 452         option_values.requested_seek_points[0] = '\0';
 453         option_values.num_requested_seek_points = -1;
 454
 455         option_values.num_files = 0;
 456         option_values.filenames = 0;
 457 }
 458
 459 int parse_options(int argc, char *argv[])
 460 {
 461         int short_option;
 462         int option_index = 1;
 463         FLAC__bool had_error = false;
 464         /*@@@ E and R: are deprecated */
 465         const char *short_opts = "0123456789ab:cdeFhHl:mMo:pP:q:r:sS:tV";
 466
 467         while ((short_option = FLAC__share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
 468                 switch (short_option) {
 469                         case 0: /* long option with no equivalent short option */
 470                                 had_error |= (parse_option(short_option, long_options_[option_index].name, FLAC__share__optarg) != 0);
 471                                 break;
 472                         case '?':
 473                         case ':':
 474                                 had_error = true;
 475                                 break;
 476                         default: /* short option */
 477                                 had_error |= (parse_option(short_option, 0, FLAC__share__optarg) != 0);
 478                                 break;
 479                 }
 480         }
 481
 482         if(had_error) {
 483                 return 1;
 484         }
 485
 486         FLAC__ASSERT(FLAC__share__optind <= argc);
 487
 488         option_values.num_files = argc - FLAC__share__optind;
 489
 490         if(option_values.num_files > 0) {
 491                 unsigned i = 0;
 492                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
 493                         die("out of memory allocating space for file names list");
 494                 while(FLAC__share__optind < argc)
 495                         option_values.filenames[i++] = local_strdup(argv[FLAC__share__optind++]);
 496         }
 497
 498         return 0;
 499 }
 500
 501 int parse_option(int short_option, const char *long_option, const char *option_argument)
 502 {
 503         char *p;
 504
 505         if(short_option == 0) {
 506                 FLAC__ASSERT(0 != long_option);
 507                 if(0 == strcmp(long_option, "delete-input-file")) {
 508                         option_values.delete_input = true;
 509                 }
 510                 else if(0 == strcmp(long_option, "output-prefix")) {
 511                         FLAC__ASSERT(0 != option_argument);
 512                         option_values.output_prefix = option_argument;
 513                 }
 514                 else if(0 == strcmp(long_option, "skip")) {
 515                         FLAC__ASSERT(0 != option_argument);
 516                         option_values.skip = (FLAC__uint64)atoi(option_argument); /* @@@ takes a pretty damn big file to overflow atoi() here, but it could happen */
 517                 }
 518                 else if(0 == strcmp(long_option, "super-secret-impractical-compression-level")) {
 519                         option_values.do_exhaustive_model_search = true;
 520                         option_values.do_escape_coding = true;
 521                         option_values.do_mid_side = true;
 522                         option_values.loose_mid_side = false;
 523                         option_values.do_qlp_coeff_prec_search = true;
 524                         option_values.min_residual_partition_order = 0;
 525                         option_values.max_residual_partition_order = 16;
 526                         option_values.rice_parameter_search_dist = 0;
 527                         option_values.max_lpc_order = 32;
 528                 }
 529                 else if(0 == strcmp(long_option, "force-raw-input")) {
 530                         option_values.force_raw_format = true;
 531                 }
 532                 else if(0 == strcmp(long_option, "lax")) {
 533                         option_values.lax = true;
 534                 }
 535                 else if(0 == strcmp(long_option, "sector-align")) {
 536                         option_values.sector_align = true;
 537                 }
 538 #ifdef FLAC__HAS_OGG
 539                 else if(0 == strcmp(long_option, "ogg")) {
 540                         option_values.use_ogg = true;
 541                 }
 542 #endif
 543                 else if(0 == strcmp(long_option, "endian")) {
 544                         FLAC__ASSERT(0 != option_argument);
 545                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
 546                                 option_values.format_is_big_endian = true;
 547                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
 548                                 option_values.format_is_big_endian = false;
 549                         else
 550                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
 551                 }
 552                 else if(0 == strcmp(long_option, "channels")) {
 553                         FLAC__ASSERT(0 != option_argument);
 554                         option_values.format_channels = atoi(option_argument);
 555                 }
 556                 else if(0 == strcmp(long_option, "bps")) {
 557                         FLAC__ASSERT(0 != option_argument);
 558                         option_values.format_bps = atoi(option_argument);
 559                 }
 560                 else if(0 == strcmp(long_option, "sample-rate")) {
 561                         FLAC__ASSERT(0 != option_argument);
 562                         option_values.format_sample_rate = atoi(option_argument);
 563                 }
 564                 else if(0 == strcmp(long_option, "sign")) {
 565                         FLAC__ASSERT(0 != option_argument);
 566                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
 567                                 option_values.format_is_unsigned_samples = false;
 568                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
 569                                 option_values.format_is_unsigned_samples = true;
 570                         else
 571                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
 572                 }
 573                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
 574                         option_values.aopts.do_residual_gnuplot = true;
 575                 }
 576                 else if(0 == strcmp(long_option, "residual-text")) {
 577                         option_values.aopts.do_residual_text = true;
 578                 }
 579                 /*
 580                  * negatives
 581                  */
 582                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
 583                         option_values.continue_through_decode_errors = false;
 584                 }
 585                 else if(0 == strcmp(long_option, "no-silent")) {
 586                         option_values.verbose = true;
 587                 }
 588                 else if(0 == strcmp(long_option, "no-seektable")) {
 589                         option_values.num_requested_seek_points = 0;
 590                         option_values.requested_seek_points[0] = '\0';
 591                 }
 592                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
 593                         option_values.delete_input = false;
 594                 }
 595                 else if(0 == strcmp(long_option, "no-sector-align")) {
 596                         option_values.sector_align = false;
 597                 }
 598                 else if(0 == strcmp(long_option, "no-lax")) {
 599                         option_values.lax = false;
 600                 }
 601 #ifdef FLAC__HAS_OGG
 602                 else if(0 == strcmp(long_option, "no-ogg")) {
 603                         option_values.use_ogg = false;
 604                 }
 605 #endif
 606                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
 607                         option_values.do_exhaustive_model_search = false;
 608                 }
 609 #if 0
 610                 /* @@@ deprecated: */
 611                 else if(0 == strcmp(long_option, "no-escape-coding")) {
 612                         option_values.do_escape_coding = false;
 613                 }
 614 #endif
 615                 else if(0 == strcmp(long_option, "no-mid-side")) {
 616                         option_values.do_mid_side = option_values.loose_mid_side = false;
 617                 }
 618                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
 619                         option_values.loose_mid_side = option_values.do_mid_side = false;
 620                 }
 621                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
 622                         option_values.do_qlp_coeff_prec_search = false;
 623                 }
 624                 else if(0 == strcmp(long_option, "no-padding")) {
 625                         option_values.padding = -1;
 626                 }
 627                 else if(0 == strcmp(long_option, "no-verify")) {
 628                         option_values.verify = false;
 629                 }
 630                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
 631                         option_values.aopts.do_residual_gnuplot = false;
 632                 }
 633                 else if(0 == strcmp(long_option, "no-residual-text")) {
 634                         option_values.aopts.do_residual_text = false;
 635                 }
 636         }
 637         else {
 638                 switch(short_option) {
 639                         case 'h':
 640                                 option_values.show_help = true;
 641                                 break;
 642                         case 'H':
 643                                 option_values.show_explain = true;
 644                                 break;
 645                         case 'd':
 646                                 option_values.mode_decode = true;
 647                                 break;
 648                         case 'a':
 649                                 option_values.mode_decode = true;
 650                                 option_values.analyze = true;
 651                                 break;
 652                         case 't':
 653                                 option_values.mode_decode = true;
 654                                 option_values.test_only = true;
 655                                 break;
 656                         case 'c':
 657                                 option_values.force_to_stdout = true;
 658                                 break;
 659                         case 's':
 660                                 option_values.verbose = false;
 661                                 break;
 662                         case 'o':
 663                                 FLAC__ASSERT(0 != option_argument);
 664                                 option_values.cmdline_forced_outfilename = option_argument;
 665                                 break;
 666                         case 'F':
 667                                 option_values.continue_through_decode_errors = true;
 668                                 break;
 669                         case '0':
 670                                 option_values.do_exhaustive_model_search = false;
 671                                 option_values.do_escape_coding = false;
 672                                 option_values.do_mid_side = false;
 673                                 option_values.loose_mid_side = false;
 674                                 option_values.qlp_coeff_precision = 0;
 675                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 676                                 option_values.rice_parameter_search_dist = 0;
 677                                 option_values.max_lpc_order = 0;
 678                                 break;
 679                         case '1':
 680                                 option_values.do_exhaustive_model_search = false;
 681                                 option_values.do_escape_coding = false;
 682                                 option_values.do_mid_side = true;
 683                                 option_values.loose_mid_side = true;
 684                                 option_values.qlp_coeff_precision = 0;
 685                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
 686                                 option_values.rice_parameter_search_dist = 0;
 687                                 option_values.max_lpc_order = 0;
 688                                 break;
 689                         case '2':
 690                                 option_values.do_exhaustive_model_search = false;
 691                                 option_values.do_escape_coding = false;
 692                                 option_values.do_mid_side = true;
 693                                 option_values.loose_mid_side = false;
 694                                 option_values.qlp_coeff_precision = 0;
 695                                 option_values.min_residual_partition_order = 0;
 696                                 option_values.max_residual_partition_order = 3;
 697                                 option_values.rice_parameter_search_dist = 0;
 698                                 option_values.max_lpc_order = 0;
 699                                 break;
 700                         case '3':
 701                                 option_values.do_exhaustive_model_search = false;
 702                                 option_values.do_escape_coding = false;
 703                                 option_values.do_mid_side = false;
 704                                 option_values.loose_mid_side = false;
 705                                 option_values.qlp_coeff_precision = 0;
 706                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 707                                 option_values.rice_parameter_search_dist = 0;
 708                                 option_values.max_lpc_order = 6;
 709                                 break;
 710                         case '4':
 711                                 option_values.do_exhaustive_model_search = false;
 712                                 option_values.do_escape_coding = false;
 713                                 option_values.do_mid_side = true;
 714                                 option_values.loose_mid_side = true;
 715                                 option_values.qlp_coeff_precision = 0;
 716                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 717                                 option_values.rice_parameter_search_dist = 0;
 718                                 option_values.max_lpc_order = 8;
 719                                 break;
 720                         case '5':
 721                                 option_values.do_exhaustive_model_search = false;
 722                                 option_values.do_escape_coding = false;
 723                                 option_values.do_mid_side = true;
 724                                 option_values.loose_mid_side = false;
 725                                 option_values.qlp_coeff_precision = 0;
 726                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
 727                                 option_values.rice_parameter_search_dist = 0;
 728                                 option_values.max_lpc_order = 8;
 729                                 break;
 730                         case '6':
 731                                 option_values.do_exhaustive_model_search = false;
 732                                 option_values.do_escape_coding = false;
 733                                 option_values.do_mid_side = true;
 734                                 option_values.loose_mid_side = false;
 735                                 option_values.qlp_coeff_precision = 0;
 736                                 option_values.min_residual_partition_order = 0;
 737                                 option_values.max_residual_partition_order = 4;
 738                                 option_values.rice_parameter_search_dist = 0;
 739                                 option_values.max_lpc_order = 8;
 740                                 break;
 741                         case '7':
 742                                 option_values.do_exhaustive_model_search = true;
 743                                 option_values.do_escape_coding = false;
 744                                 option_values.do_mid_side = true;
 745                                 option_values.loose_mid_side = false;
 746                                 option_values.qlp_coeff_precision = 0;
 747                                 option_values.min_residual_partition_order = 0;
 748                                 option_values.max_residual_partition_order = 6;
 749                                 option_values.rice_parameter_search_dist = 0;
 750                                 option_values.max_lpc_order = 8;
 751                                 break;
 752                         case '8':
 753                                 option_values.do_exhaustive_model_search = true;
 754                                 option_values.do_escape_coding = false;
 755                                 option_values.do_mid_side = true;
 756                                 option_values.loose_mid_side = false;
 757                                 option_values.qlp_coeff_precision = 0;
 758                                 option_values.min_residual_partition_order = 0;
 759                                 option_values.max_residual_partition_order = 6;
 760                                 option_values.rice_parameter_search_dist = 0;
 761                                 option_values.max_lpc_order = 12;
 762                                 break;
 763                         case '9':
 764                                 return usage_error("ERROR: compression level '9' is reserved\n");
 765                         case 'V':
 766                                 option_values.verify = true;
 767                                 break;
 768                         case 'S':
 769                                 FLAC__ASSERT(0 != option_argument);
 770                                 if(option_values.num_requested_seek_points < 0)
 771                                         option_values.num_requested_seek_points = 0;
 772                                 option_values.num_requested_seek_points++;
 773                                 strcat(option_values.requested_seek_points, option_argument);
 774                                 strcat(option_values.requested_seek_points, "<");
 775                                 break;
 776                         case 'P':
 777                                 FLAC__ASSERT(0 != option_argument);
 778                                 option_values.padding = atoi(option_argument);
 779                                 if(option_values.padding < 0)
 780                                         return usage_error("ERROR: argument to -P must be >= 0\n");
 781                                 break;
 782                         case 'b':
 783                                 FLAC__ASSERT(0 != option_argument);
 784                                 option_values.blocksize = atoi(option_argument);
 785                                 break;
 786                         case 'e':
 787                                 option_values.do_exhaustive_model_search = true;
 788                                 break;
 789                         case 'E':
 790                                 option_values.do_escape_coding = true;
 791                                 break;
 792                         case 'l':
 793                                 FLAC__ASSERT(0 != option_argument);
 794                                 option_values.max_lpc_order = atoi(option_argument);
 795                                 break;
 796                         case 'm':
 797                                 option_values.do_mid_side = true;
 798                                 option_values.loose_mid_side = false;
 799                                 break;
 800                         case 'M':
 801                                 option_values.loose_mid_side = option_values.do_mid_side = true;
 802                                 break;
 803                         case 'p':
 804                                 option_values.do_qlp_coeff_prec_search = true;
 805                                 break;
 806                         case 'q':
 807                                 FLAC__ASSERT(0 != option_argument);
 808                                 option_values.qlp_coeff_precision = atoi(option_argument);
 809                                 break;
 810                         case 'r':
 811                                 FLAC__ASSERT(0 != option_argument);
 812                                 p = strchr(option_argument, ',');
 813                                 if(0 == p) {
 814                                         option_values.min_residual_partition_order = 0;
 815                                         option_values.max_residual_partition_order = atoi(option_argument);
 816                                 }
 817                                 else {
 818                                         option_values.min_residual_partition_order = atoi(option_argument);
 819                                         option_values.max_residual_partition_order = atoi(++p);
 820                                 }
 821                                 break;
 822                         case 'R':
 823                                 FLAC__ASSERT(0 != option_argument);
 824                                 option_values.rice_parameter_search_dist = atoi(option_argument);
 825                                 break;
 826                         default:
 827                                 FLAC__ASSERT(0);
 828                 }
 829         }
 830
 831         return 0;
 832 }
 833
 834 void free_options()
 835 {
 836         if(0 != option_values.filenames)
 837                 free(option_values.filenames);
 838 }
 839
 840 int usage_error(const char *message, ...)
 841 {
 842         va_list args;
 843
 844         FLAC__ASSERT(0 != message);
 845
 846         va_start(args, message);
 847
 848         (void) vfprintf(stderr, message, args);
 849
 850         va_end(args);
 851
 852         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
 853
 854         return 1;
 855 }
 856
 857 static void usage_header()
 858 {
 859         printf("===============================================================================\n");
 860         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
 861         printf("Copyright (C) 2000,2001,2002  Josh Coalson\n");
 862         printf("\n");
 863         printf("This program is free software; you can redistribute it and/or\n");
 864         printf("modify it under the terms of the GNU General Public License\n");
 865         printf("as published by the Free Software Foundation; either version 2\n");
 866         printf("of the License, or (at your option) any later version.\n");
 867         printf("\n");
 868         printf("This program is distributed in the hope that it will be useful,\n");
 869         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
 870         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
 871         printf("GNU General Public License for more details.\n");
 872         printf("\n");
 873         printf("You should have received a copy of the GNU General Public License\n");
 874         printf("along with this program; if not, write to the Free Software\n");
 875         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
 876         printf("===============================================================================\n");
 877 }
 878
 879 static void usage_summary()
 880 {
 881         printf("Usage:\n");
 882         printf("\n");
 883         printf(" Encoding: flac [-s] [--skip #] [<encoding/format-options>] [INPUTFILE [...]]\n");
 884         printf(" Decoding: flac -d [-s] [--skip #] [-F] [<format-options>] [INPUTFILE [...]]\n");
 885         printf("  Testing: flac -t [-s] [INPUTFILE [...]]\n");
 886         printf("Analyzing: flac -a [-s] [--skip #] [<analysis-options>] [INPUTFILE [...]]\n");
 887         printf("\n");
 888 }
 889
 890 void short_usage()
 891 {
 892         usage_header();
 893         printf("\n");
 894         printf("This is the short help; for all options use 'flac --help'; for even more\n");
 895         printf("instructions use 'flac --explain'\n");
 896         printf("\n");
 897         printf("To encode:\n");
 898         printf("  flac [-#] [INPUTFILE [...]]\n");
 899         printf("\n");
 900         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
 901         printf("\n");
 902         printf("To decode:\n");
 903         printf("  flac -d [INPUTFILE [...]]\n");
 904         printf("\n");
 905         printf("To test:\n");
 906         printf("  flac -t [INPUTFILE [...]]\n");
 907 }
 908
 909 void show_help()
 910 {
 911         usage_header();
 912         usage_summary();
 913         printf("generic options:\n");
 914         printf("  -h, --help                   Show this screen\n");
 915         printf("  -H, --explain                Show detailed explanation of usage and options\n");
 916         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
 917         printf("  -t, --test                   Same as -d except no decoded file is written\n");
 918         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
 919         printf("  -c, --stdout                 Write output to stdout\n");
 920         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
 921         printf("  -o, --output-name=FILENAME   Force the output file name\n");
 922         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
 923         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
 924         printf("      --skip=#                 Skip the first # samples of each input file\n");
 925         printf("analysis options:\n");
 926         printf("      --residual-text          Include residual signal in text output\n");
 927         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
 928         printf("decoding options:\n");
 929         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
 930         printf("encoding options:\n");
 931         printf("  -V, --verify                 Verify a correct encoding\n");
 932 #ifdef FLAC__HAS_OGG
 933         printf("      --ogg                    Use Ogg as transport layer\n");
 934 #endif
 935         printf("      --lax                    Allow encoder to generate non-Subset files\n");
 936         printf("      --sector-align           Align multiple files on sector boundaries\n");
 937         printf("  -S, --seekpoint={#|X|#x}     Add seek point(s)\n");
 938         printf("  -P, --padding=#              Write a PADDING block of length #\n");
 939         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
 940         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
 941         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
 942         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
 943         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
 944         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
 945         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
 946         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
 947         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
 948         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
 949         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
 950         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
 951         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
 952 #if 0
 953         /*@@@ deprecated: */
 954         printf("  -E, --escape-coding                Do escape coding in the entropy coder\n");
 955 #endif
 956         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
 957         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
 958         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
 959         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
 960 #if 0
 961         /*@@@ deprecated: */
 962         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
 963 #endif
 964         printf("format options:\n");
 965         printf("      --endian={big|little}    Set byte order for samples\n");
 966         printf("      --channels=#             Number of channels\n");
 967         printf("      --bps=#                  Number of bits per sample\n");
 968         printf("      --sample-rate=#          Sample rate in Hz\n");
 969         printf("      --sign={signed|unsigned} Sign of samples\n");
 970         printf("      --force-raw-input        Force input to be treated as raw samples\n");
 971         printf("negative options:\n");
 972         printf("      --no-adaptive-mid-side\n");
 973         printf("      --no-decode-through-errors\n");
 974         printf("      --no-delete-input-file\n");
 975 #if 0
 976 /* @@@ deprecated: */
 977         printf("      --no-escape-coding\n");
 978 #endif
 979         printf("      --no-exhaustive-model-search\n");
 980         printf("      --no-lax\n");
 981         printf("      --no-mid-side\n");
 982 #ifdef FLAC__HAS_OGG
 983         printf("      --no-ogg\n");
 984 #endif
 985         printf("      --no-padding\n");
 986         printf("      --no-qlp-coeff-prec-search\n");
 987         printf("      --no-residual-gnuplot\n");
 988         printf("      --no-residual-text\n");
 989         printf("      --no-sector-align\n");
 990         printf("      --no-seektable\n");
 991         printf("      --no-silent\n");
 992         printf("      --no-verify\n");
 993 }
 994
 995 void show_explain()
 996 {
 997         usage_header();
 998         usage_summary();
 999         printf("For encoding:\n");
1000         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1001         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1002         printf("For decoding, the reverse is true.\n");
1003         printf("\n");
1004         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1005         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1006         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1007         printf("instead of:\n");
1008         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1009         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1010         printf("WAVE/AIFF header contents when necessary.\n");
1011         printf("\n");
1012         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1013         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1014         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1015         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1016         printf("files using -fr.\n");
1017         printf("\n");
1018         printf("generic options:\n");
1019         printf("  -h, --help                   Show basic usage a list of all options\n");
1020         printf("  -H, --explain                Show this screen\n");
1021         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1022         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1023         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1024         printf("  -c, --stdout                 Write output to stdout\n");
1025         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1026         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1027         printf("                               changes the extension.  May only be used when\n");
1028         printf("                               encoding a single file.  May not be used in\n");
1029         printf("                               conjunction with --output-prefix.\n");
1030         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1031         printf("                               STRING.  This can be useful for encoding or\n");
1032         printf("                               decoding files to a different directory.  Make\n");
1033         printf("                               sure if your STRING is a path name that it ends\n");
1034         printf("                               with a '/' slash.\n");
1035         printf("      --delete-input-file      Automatically delete the input file after a\n");
1036         printf("                               successful encode or decode.  If there was an\n");
1037         printf("                               error (including a verify error) the input file\n");
1038         printf("                               is left intact.\n");
1039         printf("      --skip=#                 Skip the first # samples of each input file; can\n");
1040         printf("                               be used both for encoding and decoding\n");
1041         printf("analysis options:\n");
1042         printf("      --residual-text          Include residual signal in text output.  This\n");
1043         printf("                               will make the file very big, much larger than\n");
1044         printf("                               even the decoded file.\n");
1045         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1046         printf("                               of each subframe\n");
1047         printf("decoding options:\n");
1048         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1049         printf("                               and removes the partially decoded file if it\n");
1050         printf("                               encounters a bitstream error.  With -F, errors\n");
1051         printf("                               are still printed but flac will continue\n");
1052         printf("                               decoding to completion.  Note that errors may\n");
1053         printf("                               cause the decoded audio to be missing some\n");
1054         printf("                               samples or have silent sections.\n");
1055         printf("encoding options:\n");
1056         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1057         printf("                               output in parallel and comparing to the\n");
1058         printf("                               original\n");
1059 #ifdef FLAC__HAS_OGG
1060         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1061         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1062         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1063         printf("                               resulting file should have an '.ogg' extension\n");
1064         printf("                               and will still be decodable by flac.  When\n");
1065         printf("                               decoding, force the input to be treated as\n");
1066         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1067         printf("                               from stdin or when the filename does not end in\n");
1068         printf("                               '.ogg'.\n");
1069 #endif
1070         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1071         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1072         printf("                               on sector boundaries.\n");
1073         printf("  -S, --seekpoint={#|X|#x}     Include a point or points in a SEEKTABLE\n");
1074         printf("       #  : a specific sample number for a seek point\n");
1075         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1076         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1077         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1078         printf("           ified union of all such values.\n");
1079         printf("     With no -S options, flac defaults to '-S 100x'.  Use -S- for no SEEKTABLE.\n");
1080         printf("     Note: -S #x will not work if the encoder can't determine the input size\n");
1081         printf("           before starting.\n");
1082         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1083         printf("           either no seek point entered (if the input size is determinable\n");
1084         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1085         printf("           determinable)\n");
1086         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1087         printf("                               block of the given length (in bytes) after the\n");
1088         printf("                               STREAMINFO block.  This is useful if you plan\n");
1089         printf("                               to tag the file later with an APPLICATION\n");
1090         printf("                               block; instead of having to rewrite the entire\n");
1091         printf("                               file later just to insert your block, you can\n");
1092         printf("                               write directly over the PADDING block.  Note\n");
1093         printf("                               that the total length of the PADDING block will\n");
1094         printf("                               be 4 bytes longer than the length given because\n");
1095         printf("                               of the 4 metadata block header bytes.  You can\n");
1096         printf("                               force no PADDING block at all to be written with\n");
1097         printf("                               --no-padding, which is the default.\n");
1098         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1099         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1100         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1101         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1102         printf("                               used)\n");
1103         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1104         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1105         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1106         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1107         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1108         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1109         printf("                                     -5 is the default setting\n");
1110         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1111         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1112         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1113         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1114         printf("                                     (stereo only)\n");
1115         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1116         printf("                                     (stereo only)\n");
1117         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1118 #if 0
1119         /*@@@ deprecated: */
1120         printf("  -E, --escape-coding                Do escape coding in the entropy coder.\n");
1121         printf("                                     This causes the encoder to use an\n");
1122         printf("                                     unencoded representation of the residual\n");
1123         printf("                                     in a partition if it is smaller.  It\n");
1124         printf("                                     increases the runtime and usually results\n");
1125         printf("                                     in an improvement of less than 1%.\n");
1126 #endif
1127         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1128         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1129         printf("                                     quantization (expensive!); overrides -q;\n");
1130         printf("                                     does nothing if using -l 0\n");
1131         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1132         printf("                                     linear-predictor coefficients; 0 => let\n");
1133         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1134         printf("                                     default is -q 0)\n");
1135         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1136         printf("                                     (# is 0..16; min defaults to 0; the\n");
1137         printf("                                     default is -r 0; above 4 doesn't usually\n");
1138         printf("                                     help much)\n");
1139 #if 0
1140         /*@@@ deprecated: */
1141         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1142 #endif
1143         printf("format options:\n");
1144         printf("      --endian={big|little}    Set byte order for samples\n");
1145         printf("      --channels=#             Number of channels\n");
1146         printf("      --bps=#                  Number of bits per sample\n");
1147         printf("      --sample-rate=#          Sample rate in Hz\n");
1148         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1149         printf("      --force-raw-input        Force input to be treated as raw samples\n");
1150         printf("negative options:\n");
1151         printf("      --no-adaptive-mid-side\n");
1152         printf("      --no-decode-through-errors\n");
1153         printf("      --no-delete-input-file\n");
1154 #if 0
1155 /* @@@ deprecated: */
1156         printf("      --no-escape-coding\n");
1157 #endif
1158         printf("      --no-exhaustive-model-search\n");
1159         printf("      --no-lax\n");
1160         printf("      --no-mid-side\n");
1161 #ifdef FLAC__HAS_OGG
1162         printf("      --no-ogg\n");
1163 #endif
1164         printf("      --no-padding\n");
1165         printf("      --no-qlp-coeff-prec-search\n");
1166         printf("      --no-residual-gnuplot\n");
1167         printf("      --no-residual-text\n");
1168         printf("      --no-sector-align\n");
1169         printf("      --no-seektable\n");
1170         printf("      --no-silent\n");
1171         printf("      --no-verify\n");
1172 }
1173
1174 void
1175 format_mistake(const char *infilename, const char *wrong, const char *right)
1176 {
1177         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1178 }
1179
1180 int encode_file(const char *infilename, const char *forced_outfilename, FLAC__bool is_last_file)
1181 {
1182         FILE *encode_infile;
1183         char outfilename[4096]; /* @@@ bad MAGIC NUMBER */
1184         char *p;
1185         FLAC__byte lookahead[12];
1186         unsigned lookahead_length = 0;
1187         FileFormat fmt= RAW;
1188         int retval;
1189         long infilesize;
1190         encode_options_t common_options;
1191
1192         if(0 == strcmp(infilename, "-")) {
1193                 infilesize = -1;
1194                 encode_infile = file__get_binary_stdin();
1195         }
1196         else {
1197                 infilesize = flac__file_get_filesize(infilename);
1198                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1199                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1200                         return 1;
1201                 }
1202         }
1203
1204         if(!option_values.force_raw_format) {
1205                 /* first set format based on name */
1206                 if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1207                         fmt= WAV;
1208                 else if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1209                         fmt= AIF;
1210                 else if(strlen(infilename) > 4 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1211                         fmt= AIF;
1212
1213                 /* attempt to guess the file type based on the first 12 bytes */
1214                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1215                         if(fmt != RAW)
1216                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1217                         fmt= RAW;
1218                 }
1219                 else {
1220                         if(!strncmp(lookahead, "RIFF", 4) && !strncmp(lookahead+8, "WAVE", 4))
1221                                 fmt= WAV;
1222                         else if(!strncmp(lookahead, "FORM", 4) && !strncmp(lookahead+8, "AIFF", 4))
1223                                 fmt= AIF;
1224                         else {
1225                                 if(fmt != RAW)
1226                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1227                                 fmt= RAW;
1228                         }
1229                 }
1230         }
1231
1232         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1233                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1234                 return 1;
1235         }
1236
1237         if(fmt == RAW) {
1238                 if(option_values.format_is_big_endian < 0 || option_values.format_channels < 0 || option_values.format_bps < 0 || option_values.format_sample_rate < 0)
1239                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --channels, --bps, and --sample-rate\n");
1240         }
1241
1242         if(encode_infile == stdin || option_values.force_to_stdout)
1243                 strcpy(outfilename, "-");
1244         else {
1245                 const char *suffix = (option_values.use_ogg? ogg_suffix : flac_suffix);
1246                 strcpy(outfilename, option_values.output_prefix? option_values.output_prefix : "");
1247                 strcat(outfilename, infilename);
1248                 if(0 == (p = strrchr(outfilename, '.')))
1249                         strcat(outfilename, suffix);
1250                 else {
1251                         if(0 == strcmp(p, suffix)) {
1252                                 strcpy(p, "_new");
1253                                 strcat(p, suffix);
1254                         }
1255                         else
1256                                 strcpy(p, suffix);
1257                 }
1258         }
1259         if(0 == forced_outfilename)
1260                 forced_outfilename = outfilename;
1261         if(0 != option_values.cmdline_forced_outfilename)
1262                 forced_outfilename = option_values.cmdline_forced_outfilename;
1263
1264         common_options.verbose = option_values.verbose;
1265         common_options.skip = option_values.skip;
1266         common_options.verify = option_values.verify;
1267 #ifdef FLAC__HAS_OGG
1268         common_options.use_ogg = option_values.use_ogg;
1269 #endif
1270         common_options.lax = option_values.lax;
1271         common_options.do_mid_side = option_values.do_mid_side;
1272         common_options.loose_mid_side = option_values.loose_mid_side;
1273         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1274         common_options.do_escape_coding = option_values.do_escape_coding;
1275         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1276         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1277         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1278         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1279         common_options.max_lpc_order = option_values.max_lpc_order;
1280         common_options.blocksize = (unsigned)option_values.blocksize;
1281         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1282         common_options.padding = option_values.padding;
1283         common_options.requested_seek_points = option_values.requested_seek_points;
1284         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1285         common_options.is_last_file = is_last_file;
1286         common_options.align_reservoir = align_reservoir;
1287         common_options.align_reservoir_samples = &align_reservoir_samples;
1288         common_options.sector_align = option_values.sector_align;
1289
1290         if(fmt == RAW) {
1291                 raw_encode_options_t options;
1292
1293                 options.common = common_options;
1294                 options.is_big_endian = option_values.format_is_big_endian;
1295                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1296                 options.channels = option_values.format_channels;
1297                 options.bps = option_values.format_bps;
1298                 options.sample_rate = option_values.format_sample_rate;
1299
1300                 retval = flac__encode_raw(encode_infile, infilesize, infilename, forced_outfilename, lookahead, lookahead_length, options);
1301         }
1302         else {
1303                 wav_encode_options_t options;
1304
1305                 options.common = common_options;
1306
1307                 if(fmt == AIF)
1308                         retval = flac__encode_aif(encode_infile, infilesize, infilename, forced_outfilename, lookahead, lookahead_length, options);
1309                 else
1310                         retval = flac__encode_wav(encode_infile, infilesize, infilename, forced_outfilename, lookahead, lookahead_length, options);
1311         }
1312
1313         if(retval == 0 && strcmp(infilename, "-")) {
1314                 if(strcmp(forced_outfilename, "-"))
1315                         flac__file_copy_metadata(infilename, forced_outfilename);
1316                 if(option_values.delete_input)
1317                         unlink(infilename);
1318         }
1319
1320         return retval;
1321 }
1322
1323 int decode_file(const char *infilename, const char *forced_outfilename)
1324 {
1325         static const char *suffixes[] = { ".wav", ".raw", ".ana" };
1326         char outfilename[4096]; /* @@@ bad MAGIC NUMBER */
1327         char *p;
1328         int retval;
1329         FLAC__bool treat_as_ogg = false;
1330         decode_options_t common_options;
1331
1332         if(!option_values.test_only && !option_values.analyze) {
1333                 if(option_values.force_raw_format && option_values.format_is_big_endian < 0)
1334                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian\n");
1335         }
1336
1337         if(0 == strcmp(infilename, "-") || option_values.force_to_stdout)
1338                 strcpy(outfilename, "-");
1339         else {
1340                 const char *suffix = suffixes[option_values.analyze? 2 : option_values.force_raw_format? 1 : 0];
1341                 strcpy(outfilename, option_values.output_prefix? option_values.output_prefix : "");
1342                 strcat(outfilename, infilename);
1343                 if(0 == (p = strrchr(outfilename, '.')))
1344                         strcat(outfilename, suffix);
1345                 else {
1346                         if(0 == strcmp(p, suffix)) {
1347                                 strcpy(p, "_new");
1348                                 strcat(p, suffix);
1349                         }
1350                         else
1351                                 strcpy(p, suffix);
1352                 }
1353         }
1354         if(0 == forced_outfilename)
1355                 forced_outfilename = outfilename;
1356         if(0 != option_values.cmdline_forced_outfilename)
1357                 forced_outfilename = option_values.cmdline_forced_outfilename;
1358
1359         if(option_values.use_ogg)
1360                 treat_as_ogg = true;
1361         else if(0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1362                 treat_as_ogg = true;
1363         else
1364                 treat_as_ogg = false;
1365
1366 #ifndef FLAC__HAS_OGG
1367         if(treat_as_ogg) {
1368                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1369                 return 1;
1370         }
1371 #endif
1372
1373         common_options.verbose = option_values.verbose;
1374         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1375 #ifdef FLAC__HAS_OGG
1376         common_options.is_ogg = treat_as_ogg;
1377 #endif
1378         common_options.skip = option_values.skip;
1379
1380         if(!option_values.force_raw_format) {
1381                 wav_decode_options_t options;
1382
1383                 options.common = common_options;
1384
1385                 retval = flac__decode_wav(infilename, option_values.test_only? 0 : forced_outfilename, option_values.analyze, option_values.aopts, options);
1386         }
1387         else {
1388                 raw_decode_options_t options;
1389
1390                 options.common = common_options;
1391                 options.is_big_endian = option_values.format_is_big_endian;
1392                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1393
1394                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : forced_outfilename, option_values.analyze, option_values.aopts, options);
1395         }
1396
1397         if(retval == 0 && strcmp(infilename, "-")) {
1398                 if(strcmp(forced_outfilename, "-"))
1399                         flac__file_copy_metadata(infilename, forced_outfilename);
1400                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1401                         unlink(infilename);
1402         }
1403
1404         return retval;
1405 }
1406
1407 void die(const char *message)
1408 {
1409         FLAC__ASSERT(0 != message);
1410         fprintf(stderr, "ERROR: %s\n", message);
1411         exit(1);
1412 }
1413
1414 char *local_strdup(const char *source)
1415 {
1416         char *ret;
1417         FLAC__ASSERT(0 != source);
1418         if(0 == (ret = strdup(source)))
1419                 die("out of memory during strdup()");
1420         return ret;
1421 }