Add 2003 to copyright notice
[flac.git] / src / flac / main.c
1 /* flac - Command-line FLAC encoder/decoder
2  * Copyright (C) 2000,2001,2002,2003  Josh Coalson
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
17  */
18
19 #include <ctype.h>
20 #include <locale.h>
21 #include <stdarg.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #ifdef HAVE_CONFIG_H
27 #include <config.h>
28 #endif
29
30 #if !defined _MSC_VER && !defined __MINGW32__
31 /* unlink is in stdio.h in VC++ */
32 #include <unistd.h> /* for unlink() */
33 #else
34 #define strcasecmp stricmp
35 #endif
36 #include "FLAC/all.h"
37 #include "share/grabbag.h"
38 #include "analyze.h"
39 #include "decode.h"
40 #include "encode.h"
41 #include "utils.h"
42 #include "vorbiscomment.h"
43
44 #if 0
45 /*[JEC] was:#if HAVE_GETOPT_LONG*/
46 /*[JEC] see flac/include/share/getopt.h as to why the change */
47 #  include <getopt.h>
48 #else
49 #  include "share/getopt.h"
50 #endif
51
52 typedef enum { RAW, WAV, AIF } FileFormat;
53
54 static int do_it();
55
56 static FLAC__bool init_options();
57 static int parse_options(int argc, char *argv[]);
58 static int parse_option(int short_option, const char *long_option, const char *option_argument);
59 static void free_options();
60
61 static int usage_error(const char *message, ...);
62 static void short_usage();
63 static void show_version();
64 static void show_help();
65 static void show_explain();
66 static void format_mistake(const char *infilename, const char *wrong, const char *right);
67
68 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
69 static int decode_file(const char *infilename);
70
71 static const char *get_encoded_outfilename(const char *infilename);
72 static const char *get_decoded_outfilename(const char *infilename);
73
74 static void die(const char *message);
75 static char *local_strdup(const char *source);
76
77
78 /*
79  * share__getopt format struct; note that for long options with no
80  * short option equivalent we just set the 'val' field to 0.
81  */
82 static struct share__option long_options_[] = {
83         /*
84          * general options
85          */
86         { "help", 0, 0, 'h' },
87         { "explain", 0, 0, 'H' },
88         { "version", 0, 0, 'v' },
89         { "decode", 0, 0, 'd' },
90         { "analyze", 0, 0, 'a' },
91         { "test", 0, 0, 't' },
92         { "stdout", 0, 0, 'c' },
93         { "silent", 0, 0, 's' },
94         { "delete-input-file", 0, 0, 0 },
95         { "output-prefix", 1, 0, 0 },
96         { "output-name", 1, 0, 'o' },
97         { "skip", 1, 0, 0 },
98         { "until", 1, 0, 0 },
99
100         /*
101          * decoding options
102          */
103         { "decode-through-errors", 0, 0, 'F' },
104
105         /*
106          * encoding options
107          */
108         { "cuesheet", 1, 0, 0 },
109         { "no-cued-seekpoints", 0, 0, 0 },
110         { "tag", 1, 0, 'T' },
111         { "compression-level-0", 0, 0, '0' },
112         { "compression-level-1", 0, 0, '1' },
113         { "compression-level-2", 0, 0, '2' },
114         { "compression-level-3", 0, 0, '3' },
115         { "compression-level-4", 0, 0, '4' },
116         { "compression-level-5", 0, 0, '5' },
117         { "compression-level-6", 0, 0, '6' },
118         { "compression-level-7", 0, 0, '7' },
119         { "compression-level-8", 0, 0, '8' },
120         { "compression-level-9", 0, 0, '9' },
121         { "best", 0, 0, '8' },
122         { "fast", 0, 0, '0' },
123         { "super-secret-totally-impractical-compression-level", 0, 0, 0 },
124         { "verify", 0, 0, 'V' },
125         { "force-aiff-format", 0, 0, 0 },
126         { "force-raw-format", 0, 0, 0 },
127         { "lax", 0, 0, 0 },
128         { "replay-gain", 0, 0, 0 },
129         { "sector-align", 0, 0, 0 },
130         { "seekpoint", 1, 0, 'S' },
131         { "padding", 1, 0, 'P' },
132 #ifdef FLAC__HAS_OGG
133         { "ogg", 0, 0, 0 },
134         { "serial-number", 1, 0, 0 },
135 #endif
136         { "blocksize", 1, 0, 'b' },
137         { "exhaustive-model-search", 0, 0, 'e' },
138 #if 0
139         /* @@@ deprecated: */
140         { "escape-coding", 0, 0, 'E' },
141 #endif
142         { "max-lpc-order", 1, 0, 'l' },
143         { "mid-side", 0, 0, 'm' },
144         { "adaptive-mid-side", 0, 0, 'M' },
145         { "qlp-coeff-precision-search", 0, 0, 'p' },
146         { "qlp-coeff-precision", 1, 0, 'q' },
147         { "rice-partition-order", 1, 0, 'r' },
148 #if 0
149         /* @@@ deprecated: */
150         { "rice-parameter-search-distance", 1, 0, 'R' },
151 #endif
152         { "endian", 1, 0, 0 },
153         { "channels", 1, 0, 0 },
154         { "bps", 1, 0, 0 },
155         { "sample-rate", 1, 0, 0 },
156         { "sign", 1, 0, 0 },
157
158         /*
159          * analysis options
160          */
161         { "residual-gnu-plot", 0, 0, 0 },
162         { "residual-text", 0, 0, 0 },
163
164         /*
165          * negatives
166          */
167         { "no-decode-through-errors", 0, 0, 0 },
168         { "no-silent", 0, 0, 0 },
169         { "no-seektable", 0, 0, 0 },
170         { "no-delete-input-file", 0, 0, 0 },
171         { "no-replay-gain", 0, 0, 0 },
172         { "no-sector-align", 0, 0, 0 },
173         { "no-lax", 0, 0, 0 },
174 #ifdef FLAC__HAS_OGG
175         { "no-ogg", 0, 0, 0 },
176 #endif
177         { "no-exhaustive-model-search", 0, 0, 0 },
178 #if 0
179         /* @@@ deprecated: */
180         { "no-escape-coding", 0, 0, 0 },
181 #endif
182         { "no-mid-side", 0, 0, 0 },
183         { "no-adaptive-mid-side", 0, 0, 0 },
184         { "no-qlp-coeff-prec-search", 0, 0, 0 },
185         { "no-padding", 0, 0, 0 },
186         { "no-verify", 0, 0, 0 },
187         { "no-residual-gnuplot", 0, 0, 0 },
188         { "no-residual-text", 0, 0, 0 },
189         /*
190          * undocumented debugging options for the test suite
191          */
192         { "disable-constant-subframes", 0, 0, 0 },
193         { "disable-fixed-subframes", 0, 0, 0 },
194         { "disable-verbatim-subframes", 0, 0, 0 },
195
196         {0, 0, 0, 0}
197 };
198
199
200 /*
201  * global to hold command-line option values
202  */
203
204 static struct {
205         FLAC__bool show_help;
206         FLAC__bool show_explain;
207         FLAC__bool show_version;
208         FLAC__bool mode_decode;
209         FLAC__bool verify;
210         FLAC__bool verbose;
211         FLAC__bool continue_through_decode_errors;
212         FLAC__bool lax;
213         FLAC__bool test_only;
214         FLAC__bool analyze;
215         FLAC__bool use_ogg;
216         FLAC__bool has_serial_number; /* true iff --serial-number was used */
217         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
218         FLAC__bool do_mid_side;
219         FLAC__bool loose_mid_side;
220         FLAC__bool do_exhaustive_model_search;
221         FLAC__bool do_escape_coding;
222         FLAC__bool do_qlp_coeff_prec_search;
223         FLAC__bool force_to_stdout;
224         FLAC__bool force_aiff_format;
225         FLAC__bool force_raw_format;
226         FLAC__bool delete_input;
227         FLAC__bool replay_gain;
228         FLAC__bool sector_align;
229         const char *cmdline_forced_outfilename;
230         const char *output_prefix;
231         analysis_options aopts;
232         int padding;
233         unsigned max_lpc_order;
234         unsigned qlp_coeff_precision;
235         const char *skip_specification;
236         const char *until_specification;
237         int format_is_big_endian;
238         int format_is_unsigned_samples;
239         int format_channels;
240         int format_bps;
241         int format_sample_rate;
242         int blocksize;
243         int min_residual_partition_order;
244         int max_residual_partition_order;
245         int rice_parameter_search_dist;
246         char requested_seek_points[50000]; /* @@@ bad MAGIC NUMBER but buffer overflow is checked */
247         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
248         const char *cuesheet_filename;
249         FLAC__bool cued_seekpoints;
250
251         unsigned num_files;
252         char **filenames;
253
254         FLAC__StreamMetadata *vorbis_comment;
255
256         struct {
257                 FLAC__bool disable_constant_subframes;
258                 FLAC__bool disable_fixed_subframes;
259                 FLAC__bool disable_verbatim_subframes;
260         } debug;
261 } option_values;
262
263
264 /*
265  * miscellaneous globals
266  */
267
268 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
269 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
270 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
271
272
273 int main(int argc, char *argv[])
274 {
275         int retval = 0;
276
277         setlocale(LC_ALL, "");
278         if(!init_options()) {
279                 fprintf(stderr, "ERROR: allocating memory\n");
280                 retval = 1;
281         }
282         else {
283                 if((retval = parse_options(argc, argv)) == 0)
284                         retval = do_it();
285         }
286
287         free_options();
288
289         return retval;
290 }
291
292 int do_it()
293 {
294         int retval = 0;
295
296         if(option_values.show_version) {
297                 show_version();
298                 return 0;
299         }
300         else if(option_values.show_explain) {
301                 show_explain();
302                 return 0;
303         }
304         else if(option_values.show_help) {
305                 show_help();
306                 return 0;
307         }
308         else {
309                 if(option_values.num_files == 0) {
310                         short_usage();
311                         return 0;
312                 }
313
314                 /*
315                  * tweak options; validate the values
316                  */
317                 if(!option_values.mode_decode) {
318                         if(option_values.blocksize < 0) {
319                                 if(option_values.max_lpc_order == 0)
320                                         option_values.blocksize = 1152;
321                                 else
322                                         option_values.blocksize = 4608;
323                         }
324                         if(option_values.max_residual_partition_order < 0) {
325                                 if(option_values.blocksize <= 1152)
326                                         option_values.max_residual_partition_order = 2;
327                                 else if(option_values.blocksize <= 2304)
328                                         option_values.max_residual_partition_order = 3;
329                                 else if(option_values.blocksize <= 4608)
330                                         option_values.max_residual_partition_order = 3;
331                                 else
332                                         option_values.max_residual_partition_order = 4;
333                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
334                         }
335                         if(option_values.rice_parameter_search_dist < 0) {
336                                 option_values.rice_parameter_search_dist = 0;
337                         }
338                 }
339                 else {
340                         if(option_values.test_only) {
341                                 if(0 != option_values.skip_specification)
342                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
343                                 if(0 != option_values.until_specification)
344                                         return usage_error("ERROR: --until is not allowed in test mode\n");
345                         }
346                 }
347
348                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
349
350                 if(option_values.format_channels >= 0) {
351                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
352                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
353                 }
354                 if(option_values.format_bps >= 0) {
355                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
356                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
357                 }
358                 if(option_values.format_sample_rate >= 0) {
359                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
360                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
361                 }
362                 if(option_values.force_raw_format && option_values.force_aiff_format)
363                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
364                 if(option_values.mode_decode) {
365                         if(!option_values.force_raw_format) {
366                                 if(option_values.format_is_big_endian >= 0)
367                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
368                                 if(option_values.format_is_unsigned_samples >= 0)
369                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
370                         }
371                         if(option_values.format_channels >= 0)
372                                 return usage_error("ERROR: --channels not allowed with --decode\n");
373                         if(option_values.format_bps >= 0)
374                                 return usage_error("ERROR: --bps not allowed with --decode\n");
375                         if(option_values.format_sample_rate >= 0)
376                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
377                 }
378                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
379                         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);
380                 }
381                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
382                         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);
383                 }
384
385                 if(option_values.sector_align) {
386                         if(option_values.mode_decode)
387                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
388                         if(0 != option_values.skip_specification)
389                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
390                         if(0 != option_values.until_specification)
391                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
392                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
393                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
394                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
395                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
396                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
397                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
398                 }
399                 if(option_values.replay_gain) {
400                         if(option_values.force_to_stdout)
401                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
402                         if(option_values.mode_decode)
403                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
404                         if(option_values.format_channels > 2)
405                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
406                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
407                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
408                         /*
409                          * We want to reserve padding space for the ReplayGain
410                          * tags that we will set later, to avoid rewriting the
411                          * whole file.
412                          */
413                         if(option_values.padding < 0) {
414                                 fprintf(stderr, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
415                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
416                         }
417                         else {
418                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
419                         }
420                 }
421                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
422                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
423                 }
424                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
425                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
426                 }
427                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
428                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
429                 }
430         }
431         if(option_values.verbose) {
432                 fprintf(stderr, "\n");
433                 fprintf(stderr, "flac %s, Copyright (C) 2000,2001,2002,2003 Josh Coalson\n", FLAC__VERSION_STRING);
434                 fprintf(stderr, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
435                 fprintf(stderr, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
436
437                 if(!option_values.mode_decode) {
438                         char padopt[16];
439                         if(option_values.padding < 0)
440                                 strcpy(padopt, "-");
441                         else
442                                 sprintf(padopt, " %d", option_values.padding);
443                         fprintf(stderr,
444                                 "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
445                                 option_values.delete_input?" --delete-input-file":"",
446                                 option_values.sector_align?" --sector-align":"",
447                                 option_values.use_ogg?" --ogg":"",
448                                 option_values.lax?" --lax":"",
449                                 padopt,
450                                 (unsigned)option_values.blocksize,
451                                 option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
452                                 option_values.max_lpc_order,
453                                 option_values.do_exhaustive_model_search?" -e":"",
454                                 option_values.do_escape_coding?" -E":"",
455                                 option_values.do_qlp_coeff_prec_search?" -p":"",
456                                 option_values.qlp_coeff_precision,
457                                 (unsigned)option_values.min_residual_partition_order,
458                                 (unsigned)option_values.max_residual_partition_order,
459                                 option_values.verify? " -V":""
460                         );
461                 }
462         }
463
464         if(option_values.mode_decode) {
465                 FLAC__bool first = true;
466
467                 if(option_values.num_files == 0) {
468                         retval = decode_file("-");
469                 }
470                 else {
471                         unsigned i;
472                         if(option_values.num_files > 1)
473                                 option_values.cmdline_forced_outfilename = 0;
474                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
475                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
476                                         continue;
477                                 retval |= decode_file(option_values.filenames[i]);
478                                 first = false;
479                         }
480                 }
481         }
482         else { /* encode */
483                 FLAC__bool first = true;
484
485                 if(option_values.num_files == 0) {
486                         retval = encode_file("-", first, true);
487                 }
488                 else {
489                         unsigned i;
490                         if(option_values.num_files > 1)
491                                 option_values.cmdline_forced_outfilename = 0;
492                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
493                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
494                                         continue;
495                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
496                                 first = false;
497                         }
498                         if(option_values.replay_gain && retval == 0) {
499                                 float album_gain, album_peak;
500                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
501                                 for(i = 0; i < option_values.num_files; i++) {
502                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
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.continue_through_decode_errors = false;
529         option_values.lax = false;
530         option_values.test_only = false;
531         option_values.analyze = false;
532         option_values.use_ogg = false;
533         option_values.has_serial_number = false;
534         option_values.serial_number = 0;
535         option_values.do_mid_side = true;
536         option_values.loose_mid_side = false;
537         option_values.do_exhaustive_model_search = false;
538         option_values.do_escape_coding = false;
539         option_values.do_qlp_coeff_prec_search = false;
540         option_values.force_to_stdout = false;
541         option_values.force_aiff_format = false;
542         option_values.force_raw_format = false;
543         option_values.delete_input = false;
544         option_values.replay_gain = false;
545         option_values.sector_align = false;
546         option_values.cmdline_forced_outfilename = 0;
547         option_values.output_prefix = 0;
548         option_values.aopts.do_residual_text = false;
549         option_values.aopts.do_residual_gnuplot = false;
550         option_values.padding = 4096;
551         option_values.max_lpc_order = 8;
552         option_values.qlp_coeff_precision = 0;
553         option_values.skip_specification = 0;
554         option_values.until_specification = 0;
555         option_values.format_is_big_endian = -1;
556         option_values.format_is_unsigned_samples = -1;
557         option_values.format_channels = -1;
558         option_values.format_bps = -1;
559         option_values.format_sample_rate = -1;
560         option_values.blocksize = -1;
561         option_values.min_residual_partition_order = -1;
562         option_values.max_residual_partition_order = -1;
563         option_values.rice_parameter_search_dist = -1;
564         option_values.requested_seek_points[0] = '\0';
565         option_values.num_requested_seek_points = -1;
566         option_values.cuesheet_filename = 0;
567         option_values.cued_seekpoints = true;
568
569         option_values.num_files = 0;
570         option_values.filenames = 0;
571
572         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
573                 return false;
574
575         option_values.debug.disable_constant_subframes = false;
576         option_values.debug.disable_fixed_subframes = false;
577         option_values.debug.disable_verbatim_subframes = false;
578
579         return true;
580 }
581
582 int parse_options(int argc, char *argv[])
583 {
584         int short_option;
585         int option_index = 1;
586         FLAC__bool had_error = false;
587         /*@@@ E and R: are deprecated */
588         const char *short_opts = "0123456789ab:cdeFhHl:mMo:pP:q:r:sS:tT:vV";
589
590         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
591                 switch (short_option) {
592                         case 0: /* long option with no equivalent short option */
593                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
594                                 break;
595                         case '?':
596                         case ':':
597                                 had_error = true;
598                                 break;
599                         default: /* short option */
600                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
601                                 break;
602                 }
603         }
604
605         if(had_error) {
606                 return 1;
607         }
608
609         FLAC__ASSERT(share__optind <= argc);
610
611         option_values.num_files = argc - share__optind;
612
613         if(option_values.num_files > 0) {
614                 unsigned i = 0;
615                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
616                         die("out of memory allocating space for file names list");
617                 while(share__optind < argc)
618                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
619         }
620
621         return 0;
622 }
623
624 int parse_option(int short_option, const char *long_option, const char *option_argument)
625 {
626         char *p;
627
628         if(short_option == 0) {
629                 FLAC__ASSERT(0 != long_option);
630                 if(0 == strcmp(long_option, "delete-input-file")) {
631                         option_values.delete_input = true;
632                 }
633                 else if(0 == strcmp(long_option, "output-prefix")) {
634                         FLAC__ASSERT(0 != option_argument);
635                         option_values.output_prefix = option_argument;
636                 }
637                 else if(0 == strcmp(long_option, "skip")) {
638                         FLAC__ASSERT(0 != option_argument);
639                         option_values.skip_specification = option_argument;
640                 }
641                 else if(0 == strcmp(long_option, "until")) {
642                         FLAC__ASSERT(0 != option_argument);
643                         option_values.until_specification = option_argument;
644                 }
645                 else if(0 == strcmp(long_option, "cuesheet")) {
646                         FLAC__ASSERT(0 != option_argument);
647                         option_values.cuesheet_filename = option_argument;
648                 }
649                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
650                         option_values.cued_seekpoints = false;
651                 }
652                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
653                         option_values.lax = true;
654                         option_values.do_exhaustive_model_search = true;
655                         option_values.do_escape_coding = true;
656                         option_values.do_mid_side = true;
657                         option_values.loose_mid_side = false;
658                         option_values.do_qlp_coeff_prec_search = true;
659                         option_values.min_residual_partition_order = 0;
660                         option_values.max_residual_partition_order = 16;
661                         option_values.rice_parameter_search_dist = 0;
662                         option_values.max_lpc_order = 32;
663                 }
664                 else if(0 == strcmp(long_option, "force-aiff-format")) {
665                         option_values.force_aiff_format = true;
666                 }
667                 else if(0 == strcmp(long_option, "force-raw-format")) {
668                         option_values.force_raw_format = true;
669                 }
670                 else if(0 == strcmp(long_option, "lax")) {
671                         option_values.lax = true;
672                 }
673                 else if(0 == strcmp(long_option, "replay-gain")) {
674                         option_values.replay_gain = true;
675                 }
676                 else if(0 == strcmp(long_option, "sector-align")) {
677                         option_values.sector_align = true;
678                 }
679 #ifdef FLAC__HAS_OGG
680                 else if(0 == strcmp(long_option, "ogg")) {
681                         option_values.use_ogg = true;
682                 }
683                 else if(0 == strcmp(long_option, "serial-number")) {
684                         option_values.has_serial_number = true;
685                         option_values.serial_number = atol(option_argument);
686                 }
687 #endif
688                 else if(0 == strcmp(long_option, "endian")) {
689                         FLAC__ASSERT(0 != option_argument);
690                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
691                                 option_values.format_is_big_endian = true;
692                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
693                                 option_values.format_is_big_endian = false;
694                         else
695                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
696                 }
697                 else if(0 == strcmp(long_option, "channels")) {
698                         FLAC__ASSERT(0 != option_argument);
699                         option_values.format_channels = atoi(option_argument);
700                 }
701                 else if(0 == strcmp(long_option, "bps")) {
702                         FLAC__ASSERT(0 != option_argument);
703                         option_values.format_bps = atoi(option_argument);
704                 }
705                 else if(0 == strcmp(long_option, "sample-rate")) {
706                         FLAC__ASSERT(0 != option_argument);
707                         option_values.format_sample_rate = atoi(option_argument);
708                 }
709                 else if(0 == strcmp(long_option, "sign")) {
710                         FLAC__ASSERT(0 != option_argument);
711                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
712                                 option_values.format_is_unsigned_samples = false;
713                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
714                                 option_values.format_is_unsigned_samples = true;
715                         else
716                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
717                 }
718                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
719                         option_values.aopts.do_residual_gnuplot = true;
720                 }
721                 else if(0 == strcmp(long_option, "residual-text")) {
722                         option_values.aopts.do_residual_text = true;
723                 }
724                 /*
725                  * negatives
726                  */
727                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
728                         option_values.continue_through_decode_errors = false;
729                 }
730                 else if(0 == strcmp(long_option, "no-silent")) {
731                         option_values.verbose = true;
732                 }
733                 else if(0 == strcmp(long_option, "no-seektable")) {
734                         option_values.num_requested_seek_points = 0;
735                         option_values.requested_seek_points[0] = '\0';
736                 }
737                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
738                         option_values.delete_input = false;
739                 }
740                 else if(0 == strcmp(long_option, "no-replay-gain")) {
741                         option_values.replay_gain = false;
742                 }
743                 else if(0 == strcmp(long_option, "no-sector-align")) {
744                         option_values.sector_align = false;
745                 }
746                 else if(0 == strcmp(long_option, "no-lax")) {
747                         option_values.lax = false;
748                 }
749 #ifdef FLAC__HAS_OGG
750                 else if(0 == strcmp(long_option, "no-ogg")) {
751                         option_values.use_ogg = false;
752                 }
753 #endif
754                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
755                         option_values.do_exhaustive_model_search = false;
756                 }
757 #if 0
758                 /* @@@ deprecated: */
759                 else if(0 == strcmp(long_option, "no-escape-coding")) {
760                         option_values.do_escape_coding = false;
761                 }
762 #endif
763                 else if(0 == strcmp(long_option, "no-mid-side")) {
764                         option_values.do_mid_side = option_values.loose_mid_side = false;
765                 }
766                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
767                         option_values.loose_mid_side = option_values.do_mid_side = false;
768                 }
769                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
770                         option_values.do_qlp_coeff_prec_search = false;
771                 }
772                 else if(0 == strcmp(long_option, "no-padding")) {
773                         option_values.padding = -1;
774                 }
775                 else if(0 == strcmp(long_option, "no-verify")) {
776                         option_values.verify = false;
777                 }
778                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
779                         option_values.aopts.do_residual_gnuplot = false;
780                 }
781                 else if(0 == strcmp(long_option, "no-residual-text")) {
782                         option_values.aopts.do_residual_text = false;
783                 }
784                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
785                         option_values.debug.disable_constant_subframes = true;
786                 }
787                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
788                         option_values.debug.disable_fixed_subframes = true;
789                 }
790                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
791                         option_values.debug.disable_verbatim_subframes = true;
792                 }
793         }
794         else {
795                 const char *violation;
796                 switch(short_option) {
797                         case 'h':
798                                 option_values.show_help = true;
799                                 break;
800                         case 'H':
801                                 option_values.show_explain = true;
802                                 break;
803                         case 'v':
804                                 option_values.show_version = true;
805                                 break;
806                         case 'd':
807                                 option_values.mode_decode = true;
808                                 break;
809                         case 'a':
810                                 option_values.mode_decode = true;
811                                 option_values.analyze = true;
812                                 break;
813                         case 't':
814                                 option_values.mode_decode = true;
815                                 option_values.test_only = true;
816                                 break;
817                         case 'c':
818                                 option_values.force_to_stdout = true;
819                                 break;
820                         case 's':
821                                 option_values.verbose = false;
822                                 break;
823                         case 'o':
824                                 FLAC__ASSERT(0 != option_argument);
825                                 option_values.cmdline_forced_outfilename = option_argument;
826                                 break;
827                         case 'F':
828                                 option_values.continue_through_decode_errors = true;
829                                 break;
830                         case 'T':
831                                 FLAC__ASSERT(0 != option_argument);
832                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
833                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
834                                 break;
835                         case '0':
836                                 option_values.do_exhaustive_model_search = false;
837                                 option_values.do_escape_coding = false;
838                                 option_values.do_mid_side = false;
839                                 option_values.loose_mid_side = false;
840                                 option_values.qlp_coeff_precision = 0;
841                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
842                                 option_values.rice_parameter_search_dist = 0;
843                                 option_values.max_lpc_order = 0;
844                                 break;
845                         case '1':
846                                 option_values.do_exhaustive_model_search = false;
847                                 option_values.do_escape_coding = false;
848                                 option_values.do_mid_side = true;
849                                 option_values.loose_mid_side = true;
850                                 option_values.qlp_coeff_precision = 0;
851                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
852                                 option_values.rice_parameter_search_dist = 0;
853                                 option_values.max_lpc_order = 0;
854                                 break;
855                         case '2':
856                                 option_values.do_exhaustive_model_search = false;
857                                 option_values.do_escape_coding = false;
858                                 option_values.do_mid_side = true;
859                                 option_values.loose_mid_side = false;
860                                 option_values.qlp_coeff_precision = 0;
861                                 option_values.min_residual_partition_order = 0;
862                                 option_values.max_residual_partition_order = 3;
863                                 option_values.rice_parameter_search_dist = 0;
864                                 option_values.max_lpc_order = 0;
865                                 break;
866                         case '3':
867                                 option_values.do_exhaustive_model_search = false;
868                                 option_values.do_escape_coding = false;
869                                 option_values.do_mid_side = false;
870                                 option_values.loose_mid_side = false;
871                                 option_values.qlp_coeff_precision = 0;
872                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
873                                 option_values.rice_parameter_search_dist = 0;
874                                 option_values.max_lpc_order = 6;
875                                 break;
876                         case '4':
877                                 option_values.do_exhaustive_model_search = false;
878                                 option_values.do_escape_coding = false;
879                                 option_values.do_mid_side = true;
880                                 option_values.loose_mid_side = true;
881                                 option_values.qlp_coeff_precision = 0;
882                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
883                                 option_values.rice_parameter_search_dist = 0;
884                                 option_values.max_lpc_order = 8;
885                                 break;
886                         case '5':
887                                 option_values.do_exhaustive_model_search = false;
888                                 option_values.do_escape_coding = false;
889                                 option_values.do_mid_side = true;
890                                 option_values.loose_mid_side = false;
891                                 option_values.qlp_coeff_precision = 0;
892                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
893                                 option_values.rice_parameter_search_dist = 0;
894                                 option_values.max_lpc_order = 8;
895                                 break;
896                         case '6':
897                                 option_values.do_exhaustive_model_search = false;
898                                 option_values.do_escape_coding = false;
899                                 option_values.do_mid_side = true;
900                                 option_values.loose_mid_side = false;
901                                 option_values.qlp_coeff_precision = 0;
902                                 option_values.min_residual_partition_order = 0;
903                                 option_values.max_residual_partition_order = 4;
904                                 option_values.rice_parameter_search_dist = 0;
905                                 option_values.max_lpc_order = 8;
906                                 break;
907                         case '7':
908                                 option_values.do_exhaustive_model_search = true;
909                                 option_values.do_escape_coding = false;
910                                 option_values.do_mid_side = true;
911                                 option_values.loose_mid_side = false;
912                                 option_values.qlp_coeff_precision = 0;
913                                 option_values.min_residual_partition_order = 0;
914                                 option_values.max_residual_partition_order = 6;
915                                 option_values.rice_parameter_search_dist = 0;
916                                 option_values.max_lpc_order = 8;
917                                 break;
918                         case '8':
919                                 option_values.do_exhaustive_model_search = true;
920                                 option_values.do_escape_coding = false;
921                                 option_values.do_mid_side = true;
922                                 option_values.loose_mid_side = false;
923                                 option_values.qlp_coeff_precision = 0;
924                                 option_values.min_residual_partition_order = 0;
925                                 option_values.max_residual_partition_order = 6;
926                                 option_values.rice_parameter_search_dist = 0;
927                                 option_values.max_lpc_order = 12;
928                                 break;
929                         case '9':
930                                 return usage_error("ERROR: compression level '9' is reserved\n");
931                         case 'V':
932                                 option_values.verify = true;
933                                 break;
934                         case 'S':
935                                 FLAC__ASSERT(0 != option_argument);
936                                 if(option_values.num_requested_seek_points < 0)
937                                         option_values.num_requested_seek_points = 0;
938                                 option_values.num_requested_seek_points++;
939                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
940                                         return usage_error("ERROR: too many seekpoints requested\n");
941                                 }
942                                 else {
943                                         strcat(option_values.requested_seek_points, option_argument);
944                                         strcat(option_values.requested_seek_points, ";");
945                                 }
946                                 break;
947                         case 'P':
948                                 FLAC__ASSERT(0 != option_argument);
949                                 option_values.padding = atoi(option_argument);
950                                 if(option_values.padding < 0)
951                                         return usage_error("ERROR: argument to -P must be >= 0\n");
952                                 break;
953                         case 'b':
954                                 FLAC__ASSERT(0 != option_argument);
955                                 option_values.blocksize = atoi(option_argument);
956                                 break;
957                         case 'e':
958                                 option_values.do_exhaustive_model_search = true;
959                                 break;
960                         case 'E':
961                                 option_values.do_escape_coding = true;
962                                 break;
963                         case 'l':
964                                 FLAC__ASSERT(0 != option_argument);
965                                 option_values.max_lpc_order = atoi(option_argument);
966                                 break;
967                         case 'm':
968                                 option_values.do_mid_side = true;
969                                 option_values.loose_mid_side = false;
970                                 break;
971                         case 'M':
972                                 option_values.loose_mid_side = option_values.do_mid_side = true;
973                                 break;
974                         case 'p':
975                                 option_values.do_qlp_coeff_prec_search = true;
976                                 break;
977                         case 'q':
978                                 FLAC__ASSERT(0 != option_argument);
979                                 option_values.qlp_coeff_precision = atoi(option_argument);
980                                 break;
981                         case 'r':
982                                 FLAC__ASSERT(0 != option_argument);
983                                 p = strchr(option_argument, ',');
984                                 if(0 == p) {
985                                         option_values.min_residual_partition_order = 0;
986                                         option_values.max_residual_partition_order = atoi(option_argument);
987                                 }
988                                 else {
989                                         option_values.min_residual_partition_order = atoi(option_argument);
990                                         option_values.max_residual_partition_order = atoi(++p);
991                                 }
992                                 break;
993                         case 'R':
994                                 FLAC__ASSERT(0 != option_argument);
995                                 option_values.rice_parameter_search_dist = atoi(option_argument);
996                                 break;
997                         default:
998                                 FLAC__ASSERT(0);
999                 }
1000         }
1001
1002         return 0;
1003 }
1004
1005 void free_options()
1006 {
1007         unsigned i;
1008         if(0 != option_values.filenames) {
1009                 for(i = 0; i < option_values.num_files; i++) {
1010                         if(0 != option_values.filenames[i])
1011                                 free(option_values.filenames[i]);
1012                 }
1013                 free(option_values.filenames);
1014         }
1015         if(0 != option_values.vorbis_comment)
1016                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1017 }
1018
1019 int usage_error(const char *message, ...)
1020 {
1021         va_list args;
1022
1023         FLAC__ASSERT(0 != message);
1024
1025         va_start(args, message);
1026
1027         (void) vfprintf(stderr, message, args);
1028
1029         va_end(args);
1030
1031         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1032
1033         return 1;
1034 }
1035
1036 void show_version()
1037 {
1038         printf("flac %s\n", FLAC__VERSION_STRING);
1039 }
1040
1041 static void usage_header()
1042 {
1043         printf("===============================================================================\n");
1044         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1045         printf("Copyright (C) 2000,2001,2002,2003  Josh Coalson\n");
1046         printf("\n");
1047         printf("This program is free software; you can redistribute it and/or\n");
1048         printf("modify it under the terms of the GNU General Public License\n");
1049         printf("as published by the Free Software Foundation; either version 2\n");
1050         printf("of the License, or (at your option) any later version.\n");
1051         printf("\n");
1052         printf("This program is distributed in the hope that it will be useful,\n");
1053         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1054         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1055         printf("GNU General Public License for more details.\n");
1056         printf("\n");
1057         printf("You should have received a copy of the GNU General Public License\n");
1058         printf("along with this program; if not, write to the Free Software\n");
1059         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1060         printf("===============================================================================\n");
1061 }
1062
1063 static void usage_summary()
1064 {
1065         printf("Usage:\n");
1066         printf("\n");
1067         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1068         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1069         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1070         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1071         printf("\n");
1072 }
1073
1074 void short_usage()
1075 {
1076         usage_header();
1077         printf("\n");
1078         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1079         printf("instructions use 'flac --explain'\n");
1080         printf("\n");
1081         printf("To encode:\n");
1082         printf("  flac [-#] [INPUTFILE [...]]\n");
1083         printf("\n");
1084         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1085         printf("\n");
1086         printf("To decode:\n");
1087         printf("  flac -d [INPUTFILE [...]]\n");
1088         printf("\n");
1089         printf("To test:\n");
1090         printf("  flac -t [INPUTFILE [...]]\n");
1091 }
1092
1093 void show_help()
1094 {
1095         usage_header();
1096         usage_summary();
1097         printf("general options:\n");
1098         printf("  -v, --version                Show the flac version number\n");
1099         printf("  -h, --help                   Show this screen\n");
1100         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1101         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1102         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1103         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1104         printf("  -c, --stdout                 Write output to stdout\n");
1105         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1106         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1107         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1108         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1109         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1110         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1111 #ifdef FLAC__HAS_OGG
1112         printf("      --ogg                    Use Ogg as transport layer\n");
1113         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1114 #endif
1115         printf("analysis options:\n");
1116         printf("      --residual-text          Include residual signal in text output\n");
1117         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1118         printf("decoding options:\n");
1119         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1120         printf("encoding options:\n");
1121         printf("  -V, --verify                 Verify a correct encoding\n");
1122         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1123         printf("      --sector-align           Align multiple files on sector boundaries\n");
1124         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1125         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1126         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1127         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1128         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1129         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1130         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1131         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1132         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1133         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1134         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1135         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1136         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1137         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1138         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1139         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1140         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1141         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1142 #if 0
1143         /*@@@ deprecated: */
1144         printf("  -E, --escape-coding                Do escape coding in the entropy coder\n");
1145 #endif
1146         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1147         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1148         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1149         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1150 #if 0
1151         /*@@@ deprecated: */
1152         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1153 #endif
1154         printf("format options:\n");
1155         printf("      --endian={big|little}    Set byte order for samples\n");
1156         printf("      --channels=#             Number of channels\n");
1157         printf("      --bps=#                  Number of bits per sample\n");
1158         printf("      --sample-rate=#          Sample rate in Hz\n");
1159         printf("      --sign={signed|unsigned} Sign of samples\n");
1160         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1161         printf("      --force-raw-format       Treat input or output as raw samples\n");
1162         printf("negative options:\n");
1163         printf("      --no-adaptive-mid-side\n");
1164         printf("      --no-decode-through-errors\n");
1165         printf("      --no-delete-input-file\n");
1166 #if 0
1167 /* @@@ deprecated: */
1168         printf("      --no-escape-coding\n");
1169 #endif
1170         printf("      --no-exhaustive-model-search\n");
1171         printf("      --no-lax\n");
1172         printf("      --no-mid-side\n");
1173 #ifdef FLAC__HAS_OGG
1174         printf("      --no-ogg\n");
1175 #endif
1176         printf("      --no-padding\n");
1177         printf("      --no-qlp-coeff-prec-search\n");
1178         printf("      --no-replay-gain\n");
1179         printf("      --no-residual-gnuplot\n");
1180         printf("      --no-residual-text\n");
1181         printf("      --no-sector-align\n");
1182         printf("      --no-seektable\n");
1183         printf("      --no-silent\n");
1184         printf("      --no-verify\n");
1185 }
1186
1187 void show_explain()
1188 {
1189         usage_header();
1190         usage_summary();
1191         printf("For encoding:\n");
1192         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1193         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1194         printf("For decoding, the reverse is true.\n");
1195         printf("\n");
1196         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1197         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1198         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1199         printf("instead of:\n");
1200         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1201         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1202         printf("WAVE/AIFF header contents when necessary.\n");
1203         printf("\n");
1204         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1205         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1206         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1207         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1208         printf("files using -fr.\n");
1209         printf("\n");
1210         printf("general options:\n");
1211         printf("  -v, --version                Show the flac version number\n");
1212         printf("  -h, --help                   Show basic usage a list of all options\n");
1213         printf("  -H, --explain                Show this screen\n");
1214         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1215         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1216         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1217         printf("  -c, --stdout                 Write output to stdout\n");
1218         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1219         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1220         printf("                               changes the extension.  May only be used when\n");
1221         printf("                               encoding a single file.  May not be used in\n");
1222         printf("                               conjunction with --output-prefix.\n");
1223         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1224         printf("                               STRING.  This can be useful for encoding or\n");
1225         printf("                               decoding files to a different directory.  Make\n");
1226         printf("                               sure if your STRING is a path name that it ends\n");
1227         printf("                               with a '/' slash.\n");
1228         printf("      --delete-input-file      Automatically delete the input file after a\n");
1229         printf("                               successful encode or decode.  If there was an\n");
1230         printf("                               error (including a verify error) the input file\n");
1231         printf("                               is left intact.\n");
1232         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1233         printf("                               be used both for encoding and decoding.  The\n");
1234         printf("                               alternative form mm:ss.ss can be used to specify\n");
1235         printf("                               minutes, seconds, and fractions of a second.\n");
1236         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1237         printf("                               file.  The given sample number is not included\n");
1238         printf("                               in the decoded output.  The alternative form\n");
1239         printf("                               mm:ss.ss can be used to specify minutes,\n");
1240         printf("                               seconds, and fractions of a second.  If a `+'\n");
1241         printf("                               sign is at the beginning, the --until point is\n");
1242         printf("                               relative to the --skip point.  If a `-' sign is\n");
1243         printf("                               at the beginning, the --until point is relative\n");
1244         printf("                               to end of the audio.\n");
1245 #ifdef FLAC__HAS_OGG
1246         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1247         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1248         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1249         printf("                               resulting file should have an '.ogg' extension\n");
1250         printf("                               and will still be decodable by flac.  When\n");
1251         printf("                               decoding, force the input to be treated as\n");
1252         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1253         printf("                               from stdin or when the filename does not end in\n");
1254         printf("                               '.ogg'.\n");
1255         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1256         printf("                               encoding and no serial number is given, flac\n");
1257         printf("                               uses '0'.  When decoding and no number is\n");
1258         printf("                               given, flac uses the serial number of the first\n");
1259         printf("                               page.\n");
1260 #endif
1261         printf("analysis options:\n");
1262         printf("      --residual-text          Include residual signal in text output.  This\n");
1263         printf("                               will make the file very big, much larger than\n");
1264         printf("                               even the decoded file.\n");
1265         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1266         printf("                               of each subframe\n");
1267         printf("decoding options:\n");
1268         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1269         printf("                               and removes the partially decoded file if it\n");
1270         printf("                               encounters a bitstream error.  With -F, errors\n");
1271         printf("                               are still printed but flac will continue\n");
1272         printf("                               decoding to completion.  Note that errors may\n");
1273         printf("                               cause the decoded audio to be missing some\n");
1274         printf("                               samples or have silent sections.\n");
1275         printf("encoding options:\n");
1276         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1277         printf("                               output in parallel and comparing to the\n");
1278         printf("                               original\n");
1279         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1280         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1281         printf("                               on sector boundaries.\n");
1282         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1283         printf("                               comments.  Title gains/peaks will be computed\n");
1284         printf("                               for each file, and an album gain/peak will be\n");
1285         printf("                               computed for all files.  All input files must\n");
1286         printf("                               have the same resolution, sample rate, and\n");
1287         printf("                               number of channels.  The sample rate must be\n");
1288         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1289         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1290         printf("                               few extra bytes in the PADDING block.\n");
1291         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1292         printf("                               a CUESHEET metadata block.  This option may only\n");
1293         printf("                               be used when encoding a single file.  A\n");
1294         printf("                               seekpoint will be added for each index point in\n");
1295         printf("                               the cuesheet to the SEEKTABLE unless\n");
1296         printf("                               --no-cued-seekpoints is specified.\n");
1297         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1298         printf("                               comment if necessary.  This option may appear\n");
1299         printf("                               more than once to add several comments.  NOTE:\n");
1300         printf("                               all tags will be added to all encoded files.\n");
1301         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1302         printf("       #  : a specific sample number for a seek point\n");
1303         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1304         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1305         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1306         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1307         printf("           ified union of all such values.\n");
1308         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1309         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1310         printf("           input size before starting.\n");
1311         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1312         printf("           either no seek point entered (if the input size is determinable\n");
1313         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1314         printf("           determinable)\n");
1315         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1316         printf("                               block of the given length (in bytes) after the\n");
1317         printf("                               STREAMINFO block.  This is useful if you plan\n");
1318         printf("                               to tag the file later with an APPLICATION\n");
1319         printf("                               block; instead of having to rewrite the entire\n");
1320         printf("                               file later just to insert your block, you can\n");
1321         printf("                               write directly over the PADDING block.  Note\n");
1322         printf("                               that the total length of the PADDING block will\n");
1323         printf("                               be 4 bytes longer than the length given because\n");
1324         printf("                               of the 4 metadata block header bytes.  You can\n");
1325         printf("                               force no PADDING block at all to be written with\n");
1326         printf("                               --no-padding, which is the default.\n");
1327         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1328         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1329         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1330         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1331         printf("                               used)\n");
1332         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1333         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1334         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1335         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1336         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1337         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1338         printf("                                     -5 is the default setting\n");
1339         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1340         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1341         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1342         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1343         printf("                                     (stereo only)\n");
1344         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1345         printf("                                     (stereo only)\n");
1346         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1347 #if 0
1348         /*@@@ deprecated: */
1349         printf("  -E, --escape-coding                Do escape coding in the entropy coder.\n");
1350         printf("                                     This causes the encoder to use an\n");
1351         printf("                                     unencoded representation of the residual\n");
1352         printf("                                     in a partition if it is smaller.  It\n");
1353         printf("                                     increases the runtime and usually results\n");
1354         printf("                                     in an improvement of less than 1%.\n");
1355 #endif
1356         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1357         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1358         printf("                                     quantization (expensive!); overrides -q;\n");
1359         printf("                                     does nothing if using -l 0\n");
1360         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1361         printf("                                     linear-predictor coefficients; 0 => let\n");
1362         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1363         printf("                                     default is -q 0)\n");
1364         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1365         printf("                                     (# is 0..16; min defaults to 0; the\n");
1366         printf("                                     default is -r 0; above 4 doesn't usually\n");
1367         printf("                                     help much)\n");
1368 #if 0
1369         /*@@@ deprecated: */
1370         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1371 #endif
1372         printf("format options:\n");
1373         printf("      --endian={big|little}    Set byte order for samples\n");
1374         printf("      --channels=#             Number of channels\n");
1375         printf("      --bps=#                  Number of bits per sample\n");
1376         printf("      --sample-rate=#          Sample rate in Hz\n");
1377         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1378         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1379         printf("                               option is not needed if the output filename (as\n");
1380         printf("                               set by -o) ends with .aiff; this option has no\n");
1381         printf("                               effect when encoding since input AIFF is auto-\n");
1382         printf("                               detected.\n");
1383         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1384         printf("                               decoding) to be treated as raw samples\n");
1385         printf("negative options:\n");
1386         printf("      --no-adaptive-mid-side\n");
1387         printf("      --no-decode-through-errors\n");
1388         printf("      --no-delete-input-file\n");
1389 #if 0
1390 /* @@@ deprecated: */
1391         printf("      --no-escape-coding\n");
1392 #endif
1393         printf("      --no-exhaustive-model-search\n");
1394         printf("      --no-lax\n");
1395         printf("      --no-mid-side\n");
1396 #ifdef FLAC__HAS_OGG
1397         printf("      --no-ogg\n");
1398 #endif
1399         printf("      --no-padding\n");
1400         printf("      --no-qlp-coeff-prec-search\n");
1401         printf("      --no-residual-gnuplot\n");
1402         printf("      --no-residual-text\n");
1403         printf("      --no-sector-align\n");
1404         printf("      --no-seektable\n");
1405         printf("      --no-silent\n");
1406         printf("      --no-verify\n");
1407 }
1408
1409 void
1410 format_mistake(const char *infilename, const char *wrong, const char *right)
1411 {
1412         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1413 }
1414
1415 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1416 {
1417         FILE *encode_infile;
1418         FLAC__byte lookahead[12];
1419         unsigned lookahead_length = 0;
1420         FileFormat fmt= RAW;
1421         int retval;
1422         long infilesize;
1423         encode_options_t common_options;
1424         const char *outfilename = get_encoded_outfilename(infilename);
1425
1426         if(0 == strcmp(infilename, "-")) {
1427                 infilesize = -1;
1428                 encode_infile = grabbag__file_get_binary_stdin();
1429         }
1430         else {
1431                 infilesize = grabbag__file_get_filesize(infilename);
1432                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1433                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1434                         return 1;
1435                 }
1436         }
1437
1438         if(!option_values.force_raw_format) {
1439                 /* first set format based on name */
1440                 if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1441                         fmt= WAV;
1442                 else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1443                         fmt= AIF;
1444                 else if(strlen(infilename) >= 5 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1445                         fmt= AIF;
1446
1447                 /* attempt to guess the file type based on the first 12 bytes */
1448                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1449                         if(fmt != RAW)
1450                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1451                         fmt= RAW;
1452                 }
1453                 else {
1454                         if(!strncmp(lookahead, "RIFF", 4) && !strncmp(lookahead+8, "WAVE", 4))
1455                                 fmt= WAV;
1456                         else if(!strncmp(lookahead, "FORM", 4) && !strncmp(lookahead+8, "AIFF", 4))
1457                                 fmt= AIF;
1458                         else {
1459                                 if(fmt != RAW)
1460                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1461                                 fmt= RAW;
1462                         }
1463                 }
1464         }
1465
1466         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1467                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1468                 return 1;
1469         }
1470
1471         if(fmt == RAW) {
1472                 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)
1473                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1474         }
1475
1476         if(encode_infile == stdin || option_values.force_to_stdout) {
1477                 if(option_values.replay_gain)
1478                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1479         }
1480
1481         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1482                 return usage_error("ERROR: invalid value for --skip\n");
1483
1484         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
1485                 return usage_error("ERROR: invalid value for --until\n");
1486         /* if there is no "--until" we want to default to "--until=-0" */
1487         if(0 == option_values.until_specification)
1488                 common_options.until_specification.is_relative = true;
1489
1490         common_options.verbose = option_values.verbose;
1491         common_options.verify = option_values.verify;
1492 #ifdef FLAC__HAS_OGG
1493         common_options.use_ogg = option_values.use_ogg;
1494         common_options.has_serial_number = option_values.has_serial_number;
1495         common_options.serial_number = option_values.serial_number;
1496 #endif
1497         common_options.lax = option_values.lax;
1498         common_options.do_mid_side = option_values.do_mid_side;
1499         common_options.loose_mid_side = option_values.loose_mid_side;
1500         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1501         common_options.do_escape_coding = option_values.do_escape_coding;
1502         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1503         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1504         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1505         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1506         common_options.max_lpc_order = option_values.max_lpc_order;
1507         common_options.blocksize = (unsigned)option_values.blocksize;
1508         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1509         common_options.padding = option_values.padding;
1510         common_options.requested_seek_points = option_values.requested_seek_points;
1511         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1512         common_options.cuesheet_filename = option_values.cuesheet_filename;
1513         common_options.cued_seekpoints = option_values.cued_seekpoints;
1514         common_options.is_first_file = is_first_file;
1515         common_options.is_last_file = is_last_file;
1516         common_options.align_reservoir = align_reservoir;
1517         common_options.align_reservoir_samples = &align_reservoir_samples;
1518         common_options.replay_gain = option_values.replay_gain;
1519         common_options.sector_align = option_values.sector_align;
1520         common_options.vorbis_comment = option_values.vorbis_comment;
1521         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1522         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1523         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1524
1525         if(fmt == RAW) {
1526                 raw_encode_options_t options;
1527
1528                 options.common = common_options;
1529                 options.is_big_endian = option_values.format_is_big_endian;
1530                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1531                 options.channels = option_values.format_channels;
1532                 options.bps = option_values.format_bps;
1533                 options.sample_rate = option_values.format_sample_rate;
1534
1535                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1536         }
1537         else {
1538                 wav_encode_options_t options;
1539
1540                 options.common = common_options;
1541
1542                 if(fmt == AIF)
1543                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1544                 else
1545                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1546         }
1547
1548         if(retval == 0 && strcmp(infilename, "-")) {
1549                 if(strcmp(outfilename, "-")) {
1550                         if(option_values.replay_gain) {
1551                                 float title_gain, title_peak;
1552                                 const char *error;
1553                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1554                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1555                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1556                                 }
1557                         }
1558                         grabbag__file_copy_metadata(infilename, outfilename);
1559                 }
1560                 if(option_values.delete_input)
1561                         unlink(infilename);
1562         }
1563
1564         return retval;
1565 }
1566
1567 int decode_file(const char *infilename)
1568 {
1569         int retval;
1570         FLAC__bool treat_as_ogg = false;
1571         decode_options_t common_options;
1572         const char *outfilename = get_decoded_outfilename(infilename);
1573
1574         if(!option_values.test_only && !option_values.analyze) {
1575                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1576                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1577         }
1578
1579         if(option_values.use_ogg)
1580                 treat_as_ogg = true;
1581         else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1582                 treat_as_ogg = true;
1583         else
1584                 treat_as_ogg = false;
1585
1586 #ifndef FLAC__HAS_OGG
1587         if(treat_as_ogg) {
1588                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1589                 return 1;
1590         }
1591 #endif
1592
1593         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1594                 return usage_error("ERROR: invalid value for --skip\n");
1595
1596         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
1597                 return usage_error("ERROR: invalid value for --until\n");
1598         /* if there is no "--until" we want to default to "--until=-0" */
1599         if(0 == option_values.until_specification)
1600                 common_options.until_specification.is_relative = true;
1601
1602         common_options.verbose = option_values.verbose;
1603         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1604 #ifdef FLAC__HAS_OGG
1605         common_options.is_ogg = treat_as_ogg;
1606         common_options.use_first_serial_number = !option_values.has_serial_number;
1607         common_options.serial_number = option_values.serial_number;
1608 #endif
1609
1610         if(!option_values.force_raw_format) {
1611                 wav_decode_options_t options;
1612
1613                 options.common = common_options;
1614
1615                 if(
1616                         option_values.force_aiff_format ||
1617                         (strlen(outfilename) >= 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1618                         (strlen(outfilename) >= 5 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1619                 )
1620                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1621                 else
1622                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1623         }
1624         else {
1625                 raw_decode_options_t options;
1626
1627                 options.common = common_options;
1628                 options.is_big_endian = option_values.format_is_big_endian;
1629                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1630
1631                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1632         }
1633
1634         if(retval == 0 && strcmp(infilename, "-")) {
1635                 if(strcmp(outfilename, "-"))
1636                         grabbag__file_copy_metadata(infilename, outfilename);
1637                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1638                         unlink(infilename);
1639         }
1640
1641         return retval;
1642 }
1643
1644 const char *get_encoded_outfilename(const char *infilename)
1645 {
1646         if(0 == option_values.cmdline_forced_outfilename) {
1647                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1648
1649                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1650                         strcpy(buffer, "-");
1651                 }
1652                 else {
1653                         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1654                         char *p;
1655                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1656                         strcat(buffer, infilename);
1657                         if(0 == (p = strrchr(buffer, '.')))
1658                                 strcat(buffer, suffix);
1659                         else {
1660                                 if(0 == strcmp(p, suffix)) {
1661                                         strcpy(p, "_new");
1662                                         strcat(p, suffix);
1663                                 }
1664                                 else
1665                                         strcpy(p, suffix);
1666                         }
1667                 }
1668                 return buffer;
1669         }
1670         else
1671                 return option_values.cmdline_forced_outfilename;
1672 }
1673
1674 const char *get_decoded_outfilename(const char *infilename)
1675 {
1676         if(0 == option_values.cmdline_forced_outfilename) {
1677                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1678
1679                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1680                         strcpy(buffer, "-");
1681                 }
1682                 else {
1683                         static const char *suffixes[] = { ".wav", ".aiff", ".raw", ".ana" };
1684                         const char *suffix = suffixes[
1685                                 option_values.analyze? 3 :
1686                                 option_values.force_raw_format? 2 :
1687                                 option_values.force_aiff_format? 1 :
1688                                 0
1689                         ];
1690                         char *p;
1691                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1692                         strcat(buffer, infilename);
1693                         if(0 == (p = strrchr(buffer, '.')))
1694                                 strcat(buffer, suffix);
1695                         else {
1696                                 if(0 == strcmp(p, suffix)) {
1697                                         strcpy(p, "_new");
1698                                         strcat(p, suffix);
1699                                 }
1700                                 else
1701                                         strcpy(p, suffix);
1702                         }
1703                 }
1704                 return buffer;
1705         }
1706         else
1707                 return option_values.cmdline_forced_outfilename;
1708 }
1709
1710 void die(const char *message)
1711 {
1712         FLAC__ASSERT(0 != message);
1713         fprintf(stderr, "ERROR: %s\n", message);
1714         exit(1);
1715 }
1716
1717 char *local_strdup(const char *source)
1718 {
1719         char *ret;
1720         FLAC__ASSERT(0 != source);
1721         if(0 == (ret = strdup(source)))
1722                 die("out of memory during strdup()");
1723         return ret;
1724 }