tweak some of the usage text
[flac.git] / src / flac / main.c
1 /* flac - Command-line FLAC encoder/decoder
2  * Copyright (C) 2000,2001,2002  Josh Coalson
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
17  */
18
19 #include <ctype.h>
20 #include <locale.h>
21 #include <stdarg.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #ifdef HAVE_CONFIG_H
27 #include <config.h>
28 #endif
29
30 #if !defined _MSC_VER && !defined __MINGW32__
31 /* unlink is in stdio.h in VC++ */
32 #include <unistd.h> /* for unlink() */
33 #else
34 #define strcasecmp stricmp
35 #endif
36 #include "FLAC/all.h"
37 #include "share/grabbag.h"
38 #include "analyze.h"
39 #include "decode.h"
40 #include "encode.h"
41 #include "utils.h"
42 #include "vorbiscomment.h"
43
44 #if 0
45 /*[JEC] was:#if HAVE_GETOPT_LONG*/
46 /*[JEC] see flac/include/share/getopt.h as to why the change */
47 #  include <getopt.h>
48 #else
49 #  include "share/getopt.h"
50 #endif
51
52 typedef enum { RAW, WAV, AIF } FileFormat;
53
54 static int do_it();
55
56 static FLAC__bool init_options();
57 static int parse_options(int argc, char *argv[]);
58 static int parse_option(int short_option, const char *long_option, const char *option_argument);
59 static void free_options();
60
61 static int usage_error(const char *message, ...);
62 static void short_usage();
63 static void show_version();
64 static void show_help();
65 static void show_explain();
66 static void format_mistake(const char *infilename, const char *wrong, const char *right);
67
68 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
69 static int decode_file(const char *infilename);
70
71 static const char *get_encoded_outfilename(const char *infilename);
72 static const char *get_decoded_outfilename(const char *infilename);
73
74 static void die(const char *message);
75 static char *local_strdup(const char *source);
76
77
78 /*
79  * share__getopt format struct; note that for long options with no
80  * short option equivalent we just set the 'val' field to 0.
81  */
82 static struct share__option long_options_[] = {
83         /*
84          * general options
85          */
86         { "help", 0, 0, 'h' },
87         { "explain", 0, 0, 'H' },
88         { "version", 0, 0, 'v' },
89         { "decode", 0, 0, 'd' },
90         { "analyze", 0, 0, 'a' },
91         { "test", 0, 0, 't' },
92         { "stdout", 0, 0, 'c' },
93         { "silent", 0, 0, 's' },
94         { "delete-input-file", 0, 0, 0 },
95         { "output-prefix", 1, 0, 0 },
96         { "output-name", 1, 0, 'o' },
97         { "skip", 1, 0, 0 },
98         { "until", 1, 0, 0 },
99
100         /*
101          * decoding options
102          */
103         { "decode-through-errors", 0, 0, 'F' },
104
105         /*
106          * encoding options
107          */
108         { "cuesheet", 1, 0, 0 },
109         { "no-cued-seekpoints", 0, 0, 0 },
110         { "tag", 1, 0, 'T' },
111         { "compression-level-0", 0, 0, '0' },
112         { "compression-level-1", 0, 0, '1' },
113         { "compression-level-2", 0, 0, '2' },
114         { "compression-level-3", 0, 0, '3' },
115         { "compression-level-4", 0, 0, '4' },
116         { "compression-level-5", 0, 0, '5' },
117         { "compression-level-6", 0, 0, '6' },
118         { "compression-level-7", 0, 0, '7' },
119         { "compression-level-8", 0, 0, '8' },
120         { "compression-level-9", 0, 0, '9' },
121         { "best", 0, 0, '8' },
122         { "fast", 0, 0, '0' },
123         { "super-secret-totally-impractical-compression-level", 0, 0, 0 },
124         { "verify", 0, 0, 'V' },
125         { "force-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 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                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
506                                                 fprintf(stderr, "%s: ERROR writing ReplayGain album tags\n", outfilename);
507                                                 retval = 1;
508                                         }
509                                 }
510                         }
511                 }
512         }
513
514         return retval;
515 }
516
517 FLAC__bool init_options()
518 {
519         option_values.show_help = false;
520         option_values.show_explain = false;
521         option_values.mode_decode = false;
522         option_values.verify = false;
523         option_values.verbose = true;
524         option_values.continue_through_decode_errors = false;
525         option_values.lax = false;
526         option_values.test_only = false;
527         option_values.analyze = false;
528         option_values.use_ogg = false;
529         option_values.has_serial_number = false;
530         option_values.serial_number = 0;
531         option_values.do_mid_side = true;
532         option_values.loose_mid_side = false;
533         option_values.do_exhaustive_model_search = false;
534         option_values.do_escape_coding = false;
535         option_values.do_qlp_coeff_prec_search = false;
536         option_values.force_to_stdout = false;
537         option_values.force_aiff_format = false;
538         option_values.force_raw_format = false;
539         option_values.delete_input = false;
540         option_values.replay_gain = false;
541         option_values.sector_align = false;
542         option_values.cmdline_forced_outfilename = 0;
543         option_values.output_prefix = 0;
544         option_values.aopts.do_residual_text = false;
545         option_values.aopts.do_residual_gnuplot = false;
546         option_values.padding = 4096;
547         option_values.max_lpc_order = 8;
548         option_values.qlp_coeff_precision = 0;
549         option_values.skip_specification = 0;
550         option_values.until_specification = 0;
551         option_values.format_is_big_endian = -1;
552         option_values.format_is_unsigned_samples = -1;
553         option_values.format_channels = -1;
554         option_values.format_bps = -1;
555         option_values.format_sample_rate = -1;
556         option_values.blocksize = -1;
557         option_values.min_residual_partition_order = -1;
558         option_values.max_residual_partition_order = -1;
559         option_values.rice_parameter_search_dist = -1;
560         option_values.requested_seek_points[0] = '\0';
561         option_values.num_requested_seek_points = -1;
562         option_values.cuesheet_filename = 0;
563         option_values.cued_seekpoints = true;
564
565         option_values.num_files = 0;
566         option_values.filenames = 0;
567
568         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
569                 return false;
570
571         option_values.debug.disable_constant_subframes = false;
572         option_values.debug.disable_fixed_subframes = false;
573         option_values.debug.disable_verbatim_subframes = false;
574
575         return true;
576 }
577
578 int parse_options(int argc, char *argv[])
579 {
580         int short_option;
581         int option_index = 1;
582         FLAC__bool had_error = false;
583         /*@@@ E and R: are deprecated */
584         const char *short_opts = "0123456789ab:cdeFhHl:mMo:pP:q:r:sS:tT:vV";
585
586         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
587                 switch (short_option) {
588                         case 0: /* long option with no equivalent short option */
589                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
590                                 break;
591                         case '?':
592                         case ':':
593                                 had_error = true;
594                                 break;
595                         default: /* short option */
596                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
597                                 break;
598                 }
599         }
600
601         if(had_error) {
602                 return 1;
603         }
604
605         FLAC__ASSERT(share__optind <= argc);
606
607         option_values.num_files = argc - share__optind;
608
609         if(option_values.num_files > 0) {
610                 unsigned i = 0;
611                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
612                         die("out of memory allocating space for file names list");
613                 while(share__optind < argc)
614                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
615         }
616
617         return 0;
618 }
619
620 int parse_option(int short_option, const char *long_option, const char *option_argument)
621 {
622         char *p;
623
624         if(short_option == 0) {
625                 FLAC__ASSERT(0 != long_option);
626                 if(0 == strcmp(long_option, "delete-input-file")) {
627                         option_values.delete_input = true;
628                 }
629                 else if(0 == strcmp(long_option, "output-prefix")) {
630                         FLAC__ASSERT(0 != option_argument);
631                         option_values.output_prefix = option_argument;
632                 }
633                 else if(0 == strcmp(long_option, "skip")) {
634                         FLAC__ASSERT(0 != option_argument);
635                         option_values.skip_specification = option_argument;
636                 }
637                 else if(0 == strcmp(long_option, "until")) {
638                         FLAC__ASSERT(0 != option_argument);
639                         option_values.until_specification = option_argument;
640                 }
641                 else if(0 == strcmp(long_option, "cuesheet")) {
642                         FLAC__ASSERT(0 != option_argument);
643                         option_values.cuesheet_filename = option_argument;
644                 }
645                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
646                         option_values.cued_seekpoints = false;
647                 }
648                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
649                         option_values.lax = true;
650                         option_values.do_exhaustive_model_search = true;
651                         option_values.do_escape_coding = true;
652                         option_values.do_mid_side = true;
653                         option_values.loose_mid_side = false;
654                         option_values.do_qlp_coeff_prec_search = true;
655                         option_values.min_residual_partition_order = 0;
656                         option_values.max_residual_partition_order = 16;
657                         option_values.rice_parameter_search_dist = 0;
658                         option_values.max_lpc_order = 32;
659                 }
660                 else if(0 == strcmp(long_option, "force-aiff-format")) {
661                         option_values.force_aiff_format = true;
662                 }
663                 else if(0 == strcmp(long_option, "force-raw-format")) {
664                         option_values.force_raw_format = true;
665                 }
666                 else if(0 == strcmp(long_option, "lax")) {
667                         option_values.lax = true;
668                 }
669                 else if(0 == strcmp(long_option, "replay-gain")) {
670                         option_values.replay_gain = true;
671                 }
672                 else if(0 == strcmp(long_option, "sector-align")) {
673                         option_values.sector_align = true;
674                 }
675 #ifdef FLAC__HAS_OGG
676                 else if(0 == strcmp(long_option, "ogg")) {
677                         option_values.use_ogg = true;
678                 }
679                 else if(0 == strcmp(long_option, "serial-number")) {
680                         option_values.has_serial_number = true;
681                         option_values.serial_number = atol(option_argument);
682                 }
683 #endif
684                 else if(0 == strcmp(long_option, "endian")) {
685                         FLAC__ASSERT(0 != option_argument);
686                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
687                                 option_values.format_is_big_endian = true;
688                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
689                                 option_values.format_is_big_endian = false;
690                         else
691                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
692                 }
693                 else if(0 == strcmp(long_option, "channels")) {
694                         FLAC__ASSERT(0 != option_argument);
695                         option_values.format_channels = atoi(option_argument);
696                 }
697                 else if(0 == strcmp(long_option, "bps")) {
698                         FLAC__ASSERT(0 != option_argument);
699                         option_values.format_bps = atoi(option_argument);
700                 }
701                 else if(0 == strcmp(long_option, "sample-rate")) {
702                         FLAC__ASSERT(0 != option_argument);
703                         option_values.format_sample_rate = atoi(option_argument);
704                 }
705                 else if(0 == strcmp(long_option, "sign")) {
706                         FLAC__ASSERT(0 != option_argument);
707                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
708                                 option_values.format_is_unsigned_samples = false;
709                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
710                                 option_values.format_is_unsigned_samples = true;
711                         else
712                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
713                 }
714                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
715                         option_values.aopts.do_residual_gnuplot = true;
716                 }
717                 else if(0 == strcmp(long_option, "residual-text")) {
718                         option_values.aopts.do_residual_text = true;
719                 }
720                 /*
721                  * negatives
722                  */
723                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
724                         option_values.continue_through_decode_errors = false;
725                 }
726                 else if(0 == strcmp(long_option, "no-silent")) {
727                         option_values.verbose = true;
728                 }
729                 else if(0 == strcmp(long_option, "no-seektable")) {
730                         option_values.num_requested_seek_points = 0;
731                         option_values.requested_seek_points[0] = '\0';
732                 }
733                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
734                         option_values.delete_input = false;
735                 }
736                 else if(0 == strcmp(long_option, "no-replay-gain")) {
737                         option_values.replay_gain = false;
738                 }
739                 else if(0 == strcmp(long_option, "no-sector-align")) {
740                         option_values.sector_align = false;
741                 }
742                 else if(0 == strcmp(long_option, "no-lax")) {
743                         option_values.lax = false;
744                 }
745 #ifdef FLAC__HAS_OGG
746                 else if(0 == strcmp(long_option, "no-ogg")) {
747                         option_values.use_ogg = false;
748                 }
749 #endif
750                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
751                         option_values.do_exhaustive_model_search = false;
752                 }
753 #if 0
754                 /* @@@ deprecated: */
755                 else if(0 == strcmp(long_option, "no-escape-coding")) {
756                         option_values.do_escape_coding = false;
757                 }
758 #endif
759                 else if(0 == strcmp(long_option, "no-mid-side")) {
760                         option_values.do_mid_side = option_values.loose_mid_side = false;
761                 }
762                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
763                         option_values.loose_mid_side = option_values.do_mid_side = false;
764                 }
765                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
766                         option_values.do_qlp_coeff_prec_search = false;
767                 }
768                 else if(0 == strcmp(long_option, "no-padding")) {
769                         option_values.padding = -1;
770                 }
771                 else if(0 == strcmp(long_option, "no-verify")) {
772                         option_values.verify = false;
773                 }
774                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
775                         option_values.aopts.do_residual_gnuplot = false;
776                 }
777                 else if(0 == strcmp(long_option, "no-residual-text")) {
778                         option_values.aopts.do_residual_text = false;
779                 }
780                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
781                         option_values.debug.disable_constant_subframes = true;
782                 }
783                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
784                         option_values.debug.disable_fixed_subframes = true;
785                 }
786                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
787                         option_values.debug.disable_verbatim_subframes = true;
788                 }
789         }
790         else {
791                 const char *violation;
792                 switch(short_option) {
793                         case 'h':
794                                 option_values.show_help = true;
795                                 break;
796                         case 'H':
797                                 option_values.show_explain = true;
798                                 break;
799                         case 'v':
800                                 option_values.show_version = true;
801                                 break;
802                         case 'd':
803                                 option_values.mode_decode = true;
804                                 break;
805                         case 'a':
806                                 option_values.mode_decode = true;
807                                 option_values.analyze = true;
808                                 break;
809                         case 't':
810                                 option_values.mode_decode = true;
811                                 option_values.test_only = true;
812                                 break;
813                         case 'c':
814                                 option_values.force_to_stdout = true;
815                                 break;
816                         case 's':
817                                 option_values.verbose = false;
818                                 break;
819                         case 'o':
820                                 FLAC__ASSERT(0 != option_argument);
821                                 option_values.cmdline_forced_outfilename = option_argument;
822                                 break;
823                         case 'F':
824                                 option_values.continue_through_decode_errors = true;
825                                 break;
826                         case 'T':
827                                 FLAC__ASSERT(0 != option_argument);
828                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
829                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
830                                 break;
831                         case '0':
832                                 option_values.do_exhaustive_model_search = false;
833                                 option_values.do_escape_coding = false;
834                                 option_values.do_mid_side = false;
835                                 option_values.loose_mid_side = false;
836                                 option_values.qlp_coeff_precision = 0;
837                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
838                                 option_values.rice_parameter_search_dist = 0;
839                                 option_values.max_lpc_order = 0;
840                                 break;
841                         case '1':
842                                 option_values.do_exhaustive_model_search = false;
843                                 option_values.do_escape_coding = false;
844                                 option_values.do_mid_side = true;
845                                 option_values.loose_mid_side = true;
846                                 option_values.qlp_coeff_precision = 0;
847                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
848                                 option_values.rice_parameter_search_dist = 0;
849                                 option_values.max_lpc_order = 0;
850                                 break;
851                         case '2':
852                                 option_values.do_exhaustive_model_search = false;
853                                 option_values.do_escape_coding = false;
854                                 option_values.do_mid_side = true;
855                                 option_values.loose_mid_side = false;
856                                 option_values.qlp_coeff_precision = 0;
857                                 option_values.min_residual_partition_order = 0;
858                                 option_values.max_residual_partition_order = 3;
859                                 option_values.rice_parameter_search_dist = 0;
860                                 option_values.max_lpc_order = 0;
861                                 break;
862                         case '3':
863                                 option_values.do_exhaustive_model_search = false;
864                                 option_values.do_escape_coding = false;
865                                 option_values.do_mid_side = false;
866                                 option_values.loose_mid_side = false;
867                                 option_values.qlp_coeff_precision = 0;
868                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
869                                 option_values.rice_parameter_search_dist = 0;
870                                 option_values.max_lpc_order = 6;
871                                 break;
872                         case '4':
873                                 option_values.do_exhaustive_model_search = false;
874                                 option_values.do_escape_coding = false;
875                                 option_values.do_mid_side = true;
876                                 option_values.loose_mid_side = true;
877                                 option_values.qlp_coeff_precision = 0;
878                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
879                                 option_values.rice_parameter_search_dist = 0;
880                                 option_values.max_lpc_order = 8;
881                                 break;
882                         case '5':
883                                 option_values.do_exhaustive_model_search = false;
884                                 option_values.do_escape_coding = false;
885                                 option_values.do_mid_side = true;
886                                 option_values.loose_mid_side = false;
887                                 option_values.qlp_coeff_precision = 0;
888                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
889                                 option_values.rice_parameter_search_dist = 0;
890                                 option_values.max_lpc_order = 8;
891                                 break;
892                         case '6':
893                                 option_values.do_exhaustive_model_search = false;
894                                 option_values.do_escape_coding = false;
895                                 option_values.do_mid_side = true;
896                                 option_values.loose_mid_side = false;
897                                 option_values.qlp_coeff_precision = 0;
898                                 option_values.min_residual_partition_order = 0;
899                                 option_values.max_residual_partition_order = 4;
900                                 option_values.rice_parameter_search_dist = 0;
901                                 option_values.max_lpc_order = 8;
902                                 break;
903                         case '7':
904                                 option_values.do_exhaustive_model_search = true;
905                                 option_values.do_escape_coding = false;
906                                 option_values.do_mid_side = true;
907                                 option_values.loose_mid_side = false;
908                                 option_values.qlp_coeff_precision = 0;
909                                 option_values.min_residual_partition_order = 0;
910                                 option_values.max_residual_partition_order = 6;
911                                 option_values.rice_parameter_search_dist = 0;
912                                 option_values.max_lpc_order = 8;
913                                 break;
914                         case '8':
915                                 option_values.do_exhaustive_model_search = true;
916                                 option_values.do_escape_coding = false;
917                                 option_values.do_mid_side = true;
918                                 option_values.loose_mid_side = false;
919                                 option_values.qlp_coeff_precision = 0;
920                                 option_values.min_residual_partition_order = 0;
921                                 option_values.max_residual_partition_order = 6;
922                                 option_values.rice_parameter_search_dist = 0;
923                                 option_values.max_lpc_order = 12;
924                                 break;
925                         case '9':
926                                 return usage_error("ERROR: compression level '9' is reserved\n");
927                         case 'V':
928                                 option_values.verify = true;
929                                 break;
930                         case 'S':
931                                 FLAC__ASSERT(0 != option_argument);
932                                 if(option_values.num_requested_seek_points < 0)
933                                         option_values.num_requested_seek_points = 0;
934                                 option_values.num_requested_seek_points++;
935                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
936                                         return usage_error("ERROR: too many seekpoints requested\n");
937                                 }
938                                 else {
939                                         strcat(option_values.requested_seek_points, option_argument);
940                                         strcat(option_values.requested_seek_points, ";");
941                                 }
942                                 break;
943                         case 'P':
944                                 FLAC__ASSERT(0 != option_argument);
945                                 option_values.padding = atoi(option_argument);
946                                 if(option_values.padding < 0)
947                                         return usage_error("ERROR: argument to -P must be >= 0\n");
948                                 break;
949                         case 'b':
950                                 FLAC__ASSERT(0 != option_argument);
951                                 option_values.blocksize = atoi(option_argument);
952                                 break;
953                         case 'e':
954                                 option_values.do_exhaustive_model_search = true;
955                                 break;
956                         case 'E':
957                                 option_values.do_escape_coding = true;
958                                 break;
959                         case 'l':
960                                 FLAC__ASSERT(0 != option_argument);
961                                 option_values.max_lpc_order = atoi(option_argument);
962                                 break;
963                         case 'm':
964                                 option_values.do_mid_side = true;
965                                 option_values.loose_mid_side = false;
966                                 break;
967                         case 'M':
968                                 option_values.loose_mid_side = option_values.do_mid_side = true;
969                                 break;
970                         case 'p':
971                                 option_values.do_qlp_coeff_prec_search = true;
972                                 break;
973                         case 'q':
974                                 FLAC__ASSERT(0 != option_argument);
975                                 option_values.qlp_coeff_precision = atoi(option_argument);
976                                 break;
977                         case 'r':
978                                 FLAC__ASSERT(0 != option_argument);
979                                 p = strchr(option_argument, ',');
980                                 if(0 == p) {
981                                         option_values.min_residual_partition_order = 0;
982                                         option_values.max_residual_partition_order = atoi(option_argument);
983                                 }
984                                 else {
985                                         option_values.min_residual_partition_order = atoi(option_argument);
986                                         option_values.max_residual_partition_order = atoi(++p);
987                                 }
988                                 break;
989                         case 'R':
990                                 FLAC__ASSERT(0 != option_argument);
991                                 option_values.rice_parameter_search_dist = atoi(option_argument);
992                                 break;
993                         default:
994                                 FLAC__ASSERT(0);
995                 }
996         }
997
998         return 0;
999 }
1000
1001 void free_options()
1002 {
1003         unsigned i;
1004         if(0 != option_values.filenames) {
1005                 for(i = 0; i < option_values.num_files; i++) {
1006                         if(0 != option_values.filenames[i])
1007                                 free(option_values.filenames[i]);
1008                 }
1009                 free(option_values.filenames);
1010         }
1011         if(0 != option_values.vorbis_comment)
1012                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1013 }
1014
1015 int usage_error(const char *message, ...)
1016 {
1017         va_list args;
1018
1019         FLAC__ASSERT(0 != message);
1020
1021         va_start(args, message);
1022
1023         (void) vfprintf(stderr, message, args);
1024
1025         va_end(args);
1026
1027         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1028
1029         return 1;
1030 }
1031
1032 void show_version()
1033 {
1034         printf("flac %s\n", FLAC__VERSION_STRING);
1035 }
1036
1037 static void usage_header()
1038 {
1039         printf("===============================================================================\n");
1040         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1041         printf("Copyright (C) 2000,2001,2002  Josh Coalson\n");
1042         printf("\n");
1043         printf("This program is free software; you can redistribute it and/or\n");
1044         printf("modify it under the terms of the GNU General Public License\n");
1045         printf("as published by the Free Software Foundation; either version 2\n");
1046         printf("of the License, or (at your option) any later version.\n");
1047         printf("\n");
1048         printf("This program is distributed in the hope that it will be useful,\n");
1049         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1050         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1051         printf("GNU General Public License for more details.\n");
1052         printf("\n");
1053         printf("You should have received a copy of the GNU General Public License\n");
1054         printf("along with this program; if not, write to the Free Software\n");
1055         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1056         printf("===============================================================================\n");
1057 }
1058
1059 static void usage_summary()
1060 {
1061         printf("Usage:\n");
1062         printf("\n");
1063         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1064         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1065         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1066         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1067         printf("\n");
1068 }
1069
1070 void short_usage()
1071 {
1072         usage_header();
1073         printf("\n");
1074         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1075         printf("instructions use 'flac --explain'\n");
1076         printf("\n");
1077         printf("To encode:\n");
1078         printf("  flac [-#] [INPUTFILE [...]]\n");
1079         printf("\n");
1080         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1081         printf("\n");
1082         printf("To decode:\n");
1083         printf("  flac -d [INPUTFILE [...]]\n");
1084         printf("\n");
1085         printf("To test:\n");
1086         printf("  flac -t [INPUTFILE [...]]\n");
1087 }
1088
1089 void show_help()
1090 {
1091         usage_header();
1092         usage_summary();
1093         printf("general options:\n");
1094         printf("  -v, --version                Show the flac version number\n");
1095         printf("  -h, --help                   Show this screen\n");
1096         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1097         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1098         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1099         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1100         printf("  -c, --stdout                 Write output to stdout\n");
1101         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1102         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1103         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1104         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1105         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1106         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1107 #ifdef FLAC__HAS_OGG
1108         printf("      --ogg                    Use Ogg as transport layer\n");
1109         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1110 #endif
1111         printf("analysis options:\n");
1112         printf("      --residual-text          Include residual signal in text output\n");
1113         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1114         printf("decoding options:\n");
1115         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1116         printf("encoding options:\n");
1117         printf("  -V, --verify                 Verify a correct encoding\n");
1118         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1119         printf("      --sector-align           Align multiple files on sector boundaries\n");
1120         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1121         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1122         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1123         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1124         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1125         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1126         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1127         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1128         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1129         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1130         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1131         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1132         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1133         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1134         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1135         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1136         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1137         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1138 #if 0
1139         /*@@@ deprecated: */
1140         printf("  -E, --escape-coding                Do escape coding in the entropy coder\n");
1141 #endif
1142         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1143         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1144         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1145         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1146 #if 0
1147         /*@@@ deprecated: */
1148         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1149 #endif
1150         printf("format options:\n");
1151         printf("      --endian={big|little}    Set byte order for samples\n");
1152         printf("      --channels=#             Number of channels\n");
1153         printf("      --bps=#                  Number of bits per sample\n");
1154         printf("      --sample-rate=#          Sample rate in Hz\n");
1155         printf("      --sign={signed|unsigned} Sign of samples\n");
1156         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1157         printf("      --force-raw-format       Treat input or output as raw samples\n");
1158         printf("negative options:\n");
1159         printf("      --no-adaptive-mid-side\n");
1160         printf("      --no-decode-through-errors\n");
1161         printf("      --no-delete-input-file\n");
1162 #if 0
1163 /* @@@ deprecated: */
1164         printf("      --no-escape-coding\n");
1165 #endif
1166         printf("      --no-exhaustive-model-search\n");
1167         printf("      --no-lax\n");
1168         printf("      --no-mid-side\n");
1169 #ifdef FLAC__HAS_OGG
1170         printf("      --no-ogg\n");
1171 #endif
1172         printf("      --no-padding\n");
1173         printf("      --no-qlp-coeff-prec-search\n");
1174         printf("      --no-replay-gain\n");
1175         printf("      --no-residual-gnuplot\n");
1176         printf("      --no-residual-text\n");
1177         printf("      --no-sector-align\n");
1178         printf("      --no-seektable\n");
1179         printf("      --no-silent\n");
1180         printf("      --no-verify\n");
1181 }
1182
1183 void show_explain()
1184 {
1185         usage_header();
1186         usage_summary();
1187         printf("For encoding:\n");
1188         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1189         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1190         printf("For decoding, the reverse is true.\n");
1191         printf("\n");
1192         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1193         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1194         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1195         printf("instead of:\n");
1196         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1197         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1198         printf("WAVE/AIFF header contents when necessary.\n");
1199         printf("\n");
1200         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1201         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1202         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1203         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1204         printf("files using -fr.\n");
1205         printf("\n");
1206         printf("general options:\n");
1207         printf("  -v, --version                Show the flac version number\n");
1208         printf("  -h, --help                   Show basic usage a list of all options\n");
1209         printf("  -H, --explain                Show this screen\n");
1210         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1211         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1212         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1213         printf("  -c, --stdout                 Write output to stdout\n");
1214         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1215         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1216         printf("                               changes the extension.  May only be used when\n");
1217         printf("                               encoding a single file.  May not be used in\n");
1218         printf("                               conjunction with --output-prefix.\n");
1219         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1220         printf("                               STRING.  This can be useful for encoding or\n");
1221         printf("                               decoding files to a different directory.  Make\n");
1222         printf("                               sure if your STRING is a path name that it ends\n");
1223         printf("                               with a '/' slash.\n");
1224         printf("      --delete-input-file      Automatically delete the input file after a\n");
1225         printf("                               successful encode or decode.  If there was an\n");
1226         printf("                               error (including a verify error) the input file\n");
1227         printf("                               is left intact.\n");
1228         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1229         printf("                               be used both for encoding and decoding.  The\n");
1230         printf("                               alternative form mm:ss.ss can be used to specify\n");
1231         printf("                               minutes, seconds, and fractions of a second.\n");
1232         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1233         printf("                               file.  The given sample number is not included\n");
1234         printf("                               in the decoded output.  The alternative form\n");
1235         printf("                               mm:ss.ss can be used to specify minutes,\n");
1236         printf("                               seconds, and fractions of a second.  If a `+'\n");
1237         printf("                               sign is at the beginning, the --until point is\n");
1238         printf("                               relative to the --skip point.  If a `-' sign is\n");
1239         printf("                               at the beginning, the --until point is relative\n");
1240         printf("                               to end of the audio.\n");
1241 #ifdef FLAC__HAS_OGG
1242         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1243         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1244         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1245         printf("                               resulting file should have an '.ogg' extension\n");
1246         printf("                               and will still be decodable by flac.  When\n");
1247         printf("                               decoding, force the input to be treated as\n");
1248         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1249         printf("                               from stdin or when the filename does not end in\n");
1250         printf("                               '.ogg'.\n");
1251         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1252         printf("                               encoding and no serial number is given, flac\n");
1253         printf("                               uses '0'.  When decoding and no number is\n");
1254         printf("                               given, flac uses the serial number of the first\n");
1255         printf("                               page.\n");
1256 #endif
1257         printf("analysis options:\n");
1258         printf("      --residual-text          Include residual signal in text output.  This\n");
1259         printf("                               will make the file very big, much larger than\n");
1260         printf("                               even the decoded file.\n");
1261         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1262         printf("                               of each subframe\n");
1263         printf("decoding options:\n");
1264         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1265         printf("                               and removes the partially decoded file if it\n");
1266         printf("                               encounters a bitstream error.  With -F, errors\n");
1267         printf("                               are still printed but flac will continue\n");
1268         printf("                               decoding to completion.  Note that errors may\n");
1269         printf("                               cause the decoded audio to be missing some\n");
1270         printf("                               samples or have silent sections.\n");
1271         printf("encoding options:\n");
1272         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1273         printf("                               output in parallel and comparing to the\n");
1274         printf("                               original\n");
1275         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1276         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1277         printf("                               on sector boundaries.\n");
1278         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1279         printf("                               comments.  Title gains/peaks will be computed\n");
1280         printf("                               for each file, and an album gain/peak will be\n");
1281         printf("                               computed for all files.  All input files must\n");
1282         printf("                               have the same resolution, sample rate, and\n");
1283         printf("                               number of channels.  The sample rate must be\n");
1284         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1285         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1286         printf("                               few extra bytes in the PADDING block.\n");
1287         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1288         printf("                               a CUESHEET metadata block.  This option may only\n");
1289         printf("                               be used when encoding a single file.  A\n");
1290         printf("                               seekpoint will be added for each index point in\n");
1291         printf("                               the cuesheet to the SEEKTABLE unless\n");
1292         printf("                               --no-cued-seekpoints is specified.\n");
1293         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1294         printf("                               comment if necessary.  This option may appear\n");
1295         printf("                               more than once to add several comments.  NOTE:\n");
1296         printf("                               all tags will be added to all encoded files.\n");
1297         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1298         printf("       #  : a specific sample number for a seek point\n");
1299         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1300         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1301         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1302         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1303         printf("           ified union of all such values.\n");
1304         printf("     With no -S options, flac defaults to '-S 100x'.  Use -S- for no SEEKTABLE.\n");
1305         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1306         printf("           input size before starting.\n");
1307         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1308         printf("           either no seek point entered (if the input size is determinable\n");
1309         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1310         printf("           determinable)\n");
1311         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1312         printf("                               block of the given length (in bytes) after the\n");
1313         printf("                               STREAMINFO block.  This is useful if you plan\n");
1314         printf("                               to tag the file later with an APPLICATION\n");
1315         printf("                               block; instead of having to rewrite the entire\n");
1316         printf("                               file later just to insert your block, you can\n");
1317         printf("                               write directly over the PADDING block.  Note\n");
1318         printf("                               that the total length of the PADDING block will\n");
1319         printf("                               be 4 bytes longer than the length given because\n");
1320         printf("                               of the 4 metadata block header bytes.  You can\n");
1321         printf("                               force no PADDING block at all to be written with\n");
1322         printf("                               --no-padding, which is the default.\n");
1323         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1324         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1325         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1326         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1327         printf("                               used)\n");
1328         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1329         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1330         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1331         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1332         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1333         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1334         printf("                                     -5 is the default setting\n");
1335         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1336         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1337         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1338         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1339         printf("                                     (stereo only)\n");
1340         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1341         printf("                                     (stereo only)\n");
1342         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1343 #if 0
1344         /*@@@ deprecated: */
1345         printf("  -E, --escape-coding                Do escape coding in the entropy coder.\n");
1346         printf("                                     This causes the encoder to use an\n");
1347         printf("                                     unencoded representation of the residual\n");
1348         printf("                                     in a partition if it is smaller.  It\n");
1349         printf("                                     increases the runtime and usually results\n");
1350         printf("                                     in an improvement of less than 1%.\n");
1351 #endif
1352         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1353         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1354         printf("                                     quantization (expensive!); overrides -q;\n");
1355         printf("                                     does nothing if using -l 0\n");
1356         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1357         printf("                                     linear-predictor coefficients; 0 => let\n");
1358         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1359         printf("                                     default is -q 0)\n");
1360         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1361         printf("                                     (# is 0..16; min defaults to 0; the\n");
1362         printf("                                     default is -r 0; above 4 doesn't usually\n");
1363         printf("                                     help much)\n");
1364 #if 0
1365         /*@@@ deprecated: */
1366         printf("  -R, -rice-parameter-search-distance=#   Rice parameter search distance\n");
1367 #endif
1368         printf("format options:\n");
1369         printf("      --endian={big|little}    Set byte order for samples\n");
1370         printf("      --channels=#             Number of channels\n");
1371         printf("      --bps=#                  Number of bits per sample\n");
1372         printf("      --sample-rate=#          Sample rate in Hz\n");
1373         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1374         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1375         printf("                               option is not needed if the output filename (as\n");
1376         printf("                               set by -o) ends with .aiff; this option has no\n");
1377         printf("                               effect when encoding since input AIFF is auto-\n");
1378         printf("                               detected.\n");
1379         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1380         printf("                               decoding) to be treated as raw samples\n");
1381         printf("negative options:\n");
1382         printf("      --no-adaptive-mid-side\n");
1383         printf("      --no-decode-through-errors\n");
1384         printf("      --no-delete-input-file\n");
1385 #if 0
1386 /* @@@ deprecated: */
1387         printf("      --no-escape-coding\n");
1388 #endif
1389         printf("      --no-exhaustive-model-search\n");
1390         printf("      --no-lax\n");
1391         printf("      --no-mid-side\n");
1392 #ifdef FLAC__HAS_OGG
1393         printf("      --no-ogg\n");
1394 #endif
1395         printf("      --no-padding\n");
1396         printf("      --no-qlp-coeff-prec-search\n");
1397         printf("      --no-residual-gnuplot\n");
1398         printf("      --no-residual-text\n");
1399         printf("      --no-sector-align\n");
1400         printf("      --no-seektable\n");
1401         printf("      --no-silent\n");
1402         printf("      --no-verify\n");
1403 }
1404
1405 void
1406 format_mistake(const char *infilename, const char *wrong, const char *right)
1407 {
1408         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1409 }
1410
1411 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1412 {
1413         FILE *encode_infile;
1414         FLAC__byte lookahead[12];
1415         unsigned lookahead_length = 0;
1416         FileFormat fmt= RAW;
1417         int retval;
1418         long infilesize;
1419         encode_options_t common_options;
1420         const char *outfilename = get_encoded_outfilename(infilename);
1421
1422         if(0 == strcmp(infilename, "-")) {
1423                 infilesize = -1;
1424                 encode_infile = grabbag__file_get_binary_stdin();
1425         }
1426         else {
1427                 infilesize = grabbag__file_get_filesize(infilename);
1428                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1429                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1430                         return 1;
1431                 }
1432         }
1433
1434         if(!option_values.force_raw_format) {
1435                 /* first set format based on name */
1436                 if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1437                         fmt= WAV;
1438                 else if(strlen(infilename) > 3 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1439                         fmt= AIF;
1440                 else if(strlen(infilename) > 4 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1441                         fmt= AIF;
1442
1443                 /* attempt to guess the file type based on the first 12 bytes */
1444                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1445                         if(fmt != RAW)
1446                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1447                         fmt= RAW;
1448                 }
1449                 else {
1450                         if(!strncmp(lookahead, "RIFF", 4) && !strncmp(lookahead+8, "WAVE", 4))
1451                                 fmt= WAV;
1452                         else if(!strncmp(lookahead, "FORM", 4) && !strncmp(lookahead+8, "AIFF", 4))
1453                                 fmt= AIF;
1454                         else {
1455                                 if(fmt != RAW)
1456                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1457                                 fmt= RAW;
1458                         }
1459                 }
1460         }
1461
1462         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1463                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1464                 return 1;
1465         }
1466
1467         if(fmt == RAW) {
1468                 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)
1469                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1470         }
1471
1472         if(encode_infile == stdin || option_values.force_to_stdout) {
1473                 if(option_values.replay_gain)
1474                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1475         }
1476
1477         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1478                 return usage_error("ERROR: invalid value for --skip\n");
1479
1480         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
1481                 return usage_error("ERROR: invalid value for --until\n");
1482         /* if there is no "--until" we want to default to "--until=-0" */
1483         if(0 == option_values.until_specification)
1484                 common_options.until_specification.is_relative = true;
1485
1486         common_options.verbose = option_values.verbose;
1487         common_options.verify = option_values.verify;
1488 #ifdef FLAC__HAS_OGG
1489         common_options.use_ogg = option_values.use_ogg;
1490         common_options.has_serial_number = option_values.has_serial_number;
1491         common_options.serial_number = option_values.serial_number;
1492 #endif
1493         common_options.lax = option_values.lax;
1494         common_options.do_mid_side = option_values.do_mid_side;
1495         common_options.loose_mid_side = option_values.loose_mid_side;
1496         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1497         common_options.do_escape_coding = option_values.do_escape_coding;
1498         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1499         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1500         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1501         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1502         common_options.max_lpc_order = option_values.max_lpc_order;
1503         common_options.blocksize = (unsigned)option_values.blocksize;
1504         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1505         common_options.padding = option_values.padding;
1506         common_options.requested_seek_points = option_values.requested_seek_points;
1507         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1508         common_options.cuesheet_filename = option_values.cuesheet_filename;
1509         common_options.cued_seekpoints = option_values.cued_seekpoints;
1510         common_options.is_first_file = is_first_file;
1511         common_options.is_last_file = is_last_file;
1512         common_options.align_reservoir = align_reservoir;
1513         common_options.align_reservoir_samples = &align_reservoir_samples;
1514         common_options.replay_gain = option_values.replay_gain;
1515         common_options.sector_align = option_values.sector_align;
1516         common_options.vorbis_comment = option_values.vorbis_comment;
1517         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1518         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1519         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1520
1521         if(fmt == RAW) {
1522                 raw_encode_options_t options;
1523
1524                 options.common = common_options;
1525                 options.is_big_endian = option_values.format_is_big_endian;
1526                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1527                 options.channels = option_values.format_channels;
1528                 options.bps = option_values.format_bps;
1529                 options.sample_rate = option_values.format_sample_rate;
1530
1531                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1532         }
1533         else {
1534                 wav_encode_options_t options;
1535
1536                 options.common = common_options;
1537
1538                 if(fmt == AIF)
1539                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1540                 else
1541                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1542         }
1543
1544         if(retval == 0 && strcmp(infilename, "-")) {
1545                 if(strcmp(outfilename, "-")) {
1546                         if(option_values.replay_gain) {
1547                                 float title_gain, title_peak;
1548                                 const char *error;
1549                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1550                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1551                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1552                                 }
1553                         }
1554                         grabbag__file_copy_metadata(infilename, outfilename);
1555                 }
1556                 if(option_values.delete_input)
1557                         unlink(infilename);
1558         }
1559
1560         return retval;
1561 }
1562
1563 int decode_file(const char *infilename)
1564 {
1565         int retval;
1566         FLAC__bool treat_as_ogg = false;
1567         decode_options_t common_options;
1568         const char *outfilename = get_decoded_outfilename(infilename);
1569
1570         if(!option_values.test_only && !option_values.analyze) {
1571                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1572                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1573         }
1574
1575         if(option_values.use_ogg)
1576                 treat_as_ogg = true;
1577         else if(0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1578                 treat_as_ogg = true;
1579         else
1580                 treat_as_ogg = false;
1581
1582 #ifndef FLAC__HAS_OGG
1583         if(treat_as_ogg) {
1584                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1585                 return 1;
1586         }
1587 #endif
1588
1589         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1590                 return usage_error("ERROR: invalid value for --skip\n");
1591
1592         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
1593                 return usage_error("ERROR: invalid value for --until\n");
1594         /* if there is no "--until" we want to default to "--until=-0" */
1595         if(0 == option_values.until_specification)
1596                 common_options.until_specification.is_relative = true;
1597
1598         common_options.verbose = option_values.verbose;
1599         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1600 #ifdef FLAC__HAS_OGG
1601         common_options.is_ogg = treat_as_ogg;
1602         common_options.use_first_serial_number = !option_values.has_serial_number;
1603         common_options.serial_number = option_values.serial_number;
1604 #endif
1605
1606         if(!option_values.force_raw_format) {
1607                 wav_decode_options_t options;
1608
1609                 options.common = common_options;
1610
1611                 if(
1612                         option_values.force_aiff_format ||
1613                         (strlen(outfilename) > 3 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1614                         (strlen(outfilename) > 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1615                 )
1616                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1617                 else
1618                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1619         }
1620         else {
1621                 raw_decode_options_t options;
1622
1623                 options.common = common_options;
1624                 options.is_big_endian = option_values.format_is_big_endian;
1625                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1626
1627                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1628         }
1629
1630         if(retval == 0 && strcmp(infilename, "-")) {
1631                 if(strcmp(outfilename, "-"))
1632                         grabbag__file_copy_metadata(infilename, outfilename);
1633                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1634                         unlink(infilename);
1635         }
1636
1637         return retval;
1638 }
1639
1640 const char *get_encoded_outfilename(const char *infilename)
1641 {
1642         if(0 == option_values.cmdline_forced_outfilename) {
1643                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1644
1645                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1646                         strcpy(buffer, "-");
1647                 }
1648                 else {
1649                         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1650                         char *p;
1651                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1652                         strcat(buffer, infilename);
1653                         if(0 == (p = strrchr(buffer, '.')))
1654                                 strcat(buffer, suffix);
1655                         else {
1656                                 if(0 == strcmp(p, suffix)) {
1657                                         strcpy(p, "_new");
1658                                         strcat(p, suffix);
1659                                 }
1660                                 else
1661                                         strcpy(p, suffix);
1662                         }
1663                 }
1664                 return buffer;
1665         }
1666         else
1667                 return option_values.cmdline_forced_outfilename;
1668 }
1669
1670 const char *get_decoded_outfilename(const char *infilename)
1671 {
1672         if(0 == option_values.cmdline_forced_outfilename) {
1673                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1674
1675                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1676                         strcpy(buffer, "-");
1677                 }
1678                 else {
1679                         static const char *suffixes[] = { ".wav", ".aiff", ".raw", ".ana" };
1680                         const char *suffix = suffixes[
1681                                 option_values.analyze? 3 :
1682                                 option_values.force_raw_format? 2 :
1683                                 option_values.force_aiff_format? 1 :
1684                                 0
1685                         ];
1686                         char *p;
1687                         strcpy(buffer, option_values.output_prefix? option_values.output_prefix : "");
1688                         strcat(buffer, infilename);
1689                         if(0 == (p = strrchr(buffer, '.')))
1690                                 strcat(buffer, suffix);
1691                         else {
1692                                 if(0 == strcmp(p, suffix)) {
1693                                         strcpy(p, "_new");
1694                                         strcat(p, suffix);
1695                                 }
1696                                 else
1697                                         strcpy(p, suffix);
1698                         }
1699                 }
1700                 return buffer;
1701         }
1702         else
1703                 return option_values.cmdline_forced_outfilename;
1704 }
1705
1706 void die(const char *message)
1707 {
1708         FLAC__ASSERT(0 != message);
1709         fprintf(stderr, "ERROR: %s\n", message);
1710         exit(1);
1711 }
1712
1713 char *local_strdup(const char *source)
1714 {
1715         char *ret;
1716         FLAC__ASSERT(0 != source);
1717         if(0 == (ret = strdup(source)))
1718                 die("out of memory during strdup()");
1719         return ret;
1720 }