add documentation for flac's --picture option
[flac.git] / src / flac / main.c
1 /* flac - Command-line FLAC encoder/decoder
2  * Copyright (C) 2000,2001,2002,2003,2004,2005,2006  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 #if HAVE_CONFIG_H
20 #  include <config.h>
21 #endif
22
23 #include <ctype.h>
24 #include <errno.h>
25 #include <locale.h>
26 #include <stdarg.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <time.h>
31
32 #if !defined _MSC_VER && !defined __MINGW32__
33 /* unlink is in stdio.h in VC++ */
34 #include <unistd.h> /* for unlink() */
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 "local_string_utils.h" /* for flac__strlcat() and flac__strlcpy() */
42 #include "utils.h"
43 #include "vorbiscomment.h"
44
45 #if defined _MSC_VER || defined __MINGW32__ || defined __EMX__
46 #define FLAC__STRCASECMP stricmp
47 #else
48 #define FLAC__STRCASECMP strcasecmp
49 #endif
50
51 #if 0
52 /*[JEC] was:#if HAVE_GETOPT_LONG*/
53 /*[JEC] see flac/include/share/getopt.h as to why the change */
54 #  include <getopt.h>
55 #else
56 #  include "share/getopt.h"
57 #endif
58
59 typedef enum { RAW, WAV, AIF, FLAC } FileFormat;
60
61 static int do_it();
62
63 static FLAC__bool init_options();
64 static int parse_options(int argc, char *argv[]);
65 static int parse_option(int short_option, const char *long_option, const char *option_argument);
66 static void free_options();
67
68 static int usage_error(const char *message, ...);
69 static void short_usage();
70 static void show_version();
71 static void show_help();
72 static void show_explain();
73 static void format_mistake(const char *infilename, const char *wrong, const char *right);
74
75 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
76 static int decode_file(const char *infilename);
77
78 static const char *get_encoded_outfilename(const char *infilename);
79 static const char *get_decoded_outfilename(const char *infilename);
80 static const char *get_outfilename(const char *infilename, const char *suffix);
81
82 static void die(const char *message);
83 static char *local_strdup(const char *source);
84
85
86 /*
87  * share__getopt format struct; note that for long options with no
88  * short option equivalent we just set the 'val' field to 0.
89  */
90 static struct share__option long_options_[] = {
91         /*
92          * general options
93          */
94         { "help"             , share__no_argument, 0, 'h' },
95         { "explain"          , share__no_argument, 0, 'H' },
96         { "version"          , share__no_argument, 0, 'v' },
97         { "decode"           , share__no_argument, 0, 'd' },
98         { "analyze"          , share__no_argument, 0, 'a' },
99         { "test"             , share__no_argument, 0, 't' },
100         { "stdout"           , share__no_argument, 0, 'c' },
101         { "silent"           , share__no_argument, 0, 's' },
102         { "totally-silent"   , share__no_argument, 0, 0 },
103         { "force"            , share__no_argument, 0, 'f' },
104         { "delete-input-file", share__no_argument, 0, 0 },
105         { "output-prefix"    , share__required_argument, 0, 0 },
106         { "output-name"      , share__required_argument, 0, 'o' },
107         { "skip"             , share__required_argument, 0, 0 },
108         { "until"            , share__required_argument, 0, 0 },
109
110         /*
111          * decoding options
112          */
113         { "decode-through-errors", share__no_argument, 0, 'F' },
114         { "cue"                  , share__required_argument, 0, 0 },
115         { "apply-replaygain-which-is-not-lossless", share__optional_argument, 0, 0 }, /* undocumented */
116
117         /*
118          * encoding options
119          */
120         { "cuesheet"                  , share__required_argument, 0, 0 },
121         { "no-cued-seekpoints"        , share__no_argument, 0, 0 },
122         { "picture"                   , share__required_argument, 0, 0 },
123         { "tag"                       , share__required_argument, 0, 'T' },
124         { "tag-from-file"             , share__required_argument, 0, 0 },
125         { "compression-level-0"       , share__no_argument, 0, '0' },
126         { "compression-level-1"       , share__no_argument, 0, '1' },
127         { "compression-level-2"       , share__no_argument, 0, '2' },
128         { "compression-level-3"       , share__no_argument, 0, '3' },
129         { "compression-level-4"       , share__no_argument, 0, '4' },
130         { "compression-level-5"       , share__no_argument, 0, '5' },
131         { "compression-level-6"       , share__no_argument, 0, '6' },
132         { "compression-level-7"       , share__no_argument, 0, '7' },
133         { "compression-level-8"       , share__no_argument, 0, '8' },
134         { "compression-level-9"       , share__no_argument, 0, '9' },
135         { "best"                      , share__no_argument, 0, '8' },
136         { "fast"                      , share__no_argument, 0, '0' },
137         { "super-secret-totally-impractical-compression-level", share__no_argument, 0, 0 },
138         { "verify"                    , share__no_argument, 0, 'V' },
139         { "force-aiff-format"         , share__no_argument, 0, 0 },
140         { "force-raw-format"          , share__no_argument, 0, 0 },
141         { "lax"                       , share__no_argument, 0, 0 },
142         { "replay-gain"               , share__no_argument, 0, 0 },
143         { "sector-align"              , share__no_argument, 0, 0 },
144         { "seekpoint"                 , share__required_argument, 0, 'S' },
145         { "padding"                   , share__required_argument, 0, 'P' },
146 #ifdef FLAC__HAS_OGG
147         { "ogg"                       , share__no_argument, 0, 0 },
148         { "serial-number"             , share__required_argument, 0, 0 },
149 #endif
150         { "blocksize"                 , share__required_argument, 0, 'b' },
151         { "exhaustive-model-search"   , share__no_argument, 0, 'e' },
152         { "max-lpc-order"             , share__required_argument, 0, 'l' },
153         { "apodization"               , share__required_argument, 0, 'A' },
154         { "mid-side"                  , share__no_argument, 0, 'm' },
155         { "adaptive-mid-side"         , share__no_argument, 0, 'M' },
156         { "qlp-coeff-precision-search", share__no_argument, 0, 'p' },
157         { "qlp-coeff-precision"       , share__required_argument, 0, 'q' },
158         { "rice-partition-order"      , share__required_argument, 0, 'r' },
159         { "endian"                    , share__required_argument, 0, 0 },
160         { "channels"                  , share__required_argument, 0, 0 },
161         { "bps"                       , share__required_argument, 0, 0 },
162         { "sample-rate"               , share__required_argument, 0, 0 },
163         { "sign"                      , share__required_argument, 0, 0 },
164         { "input-size"                , share__required_argument, 0, 0 },
165
166         /*
167          * analysis options
168          */
169         { "residual-gnuplot", share__no_argument, 0, 0 },
170         { "residual-text", share__no_argument, 0, 0 },
171
172         /*
173          * negatives
174          */
175         { "no-decode-through-errors"  , share__no_argument, 0, 0 },
176         { "no-silent"                 , share__no_argument, 0, 0 },
177         { "no-force"                  , share__no_argument, 0, 0 },
178         { "no-seektable"              , share__no_argument, 0, 0 },
179         { "no-delete-input-file"      , share__no_argument, 0, 0 },
180         { "no-replay-gain"            , share__no_argument, 0, 0 },
181         { "no-sector-align"           , share__no_argument, 0, 0 },
182         { "no-lax"                    , share__no_argument, 0, 0 },
183 #ifdef FLAC__HAS_OGG
184         { "no-ogg"                    , share__no_argument, 0, 0 },
185 #endif
186         { "no-exhaustive-model-search", share__no_argument, 0, 0 },
187         { "no-mid-side"               , share__no_argument, 0, 0 },
188         { "no-adaptive-mid-side"      , share__no_argument, 0, 0 },
189         { "no-qlp-coeff-prec-search"  , share__no_argument, 0, 0 },
190         { "no-padding"                , share__no_argument, 0, 0 },
191         { "no-verify"                 , share__no_argument, 0, 0 },
192         { "no-residual-gnuplot"       , share__no_argument, 0, 0 },
193         { "no-residual-text"          , share__no_argument, 0, 0 },
194         /*
195          * undocumented debugging options for the test suite
196          */
197         { "disable-constant-subframes", share__no_argument, 0, 0 },
198         { "disable-fixed-subframes"   , share__no_argument, 0, 0 },
199         { "disable-verbatim-subframes", share__no_argument, 0, 0 },
200
201         {0, 0, 0, 0}
202 };
203
204
205 /*
206  * global to hold command-line option values
207  */
208
209 static struct {
210         FLAC__bool show_help;
211         FLAC__bool show_explain;
212         FLAC__bool show_version;
213         FLAC__bool mode_decode;
214         FLAC__bool verify;
215         FLAC__bool force_file_overwrite;
216         FLAC__bool continue_through_decode_errors;
217         replaygain_synthesis_spec_t replaygain_synthesis_spec;
218         FLAC__bool lax;
219         FLAC__bool test_only;
220         FLAC__bool analyze;
221         FLAC__bool use_ogg;
222         FLAC__bool has_serial_number; /* true iff --serial-number was used */
223         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
224         FLAC__bool do_mid_side;
225         FLAC__bool loose_mid_side;
226         FLAC__bool do_exhaustive_model_search;
227         FLAC__bool do_escape_coding;
228         FLAC__bool do_qlp_coeff_prec_search;
229         FLAC__bool force_to_stdout;
230         FLAC__bool force_aiff_format;
231         FLAC__bool force_raw_format;
232         FLAC__bool delete_input;
233         FLAC__bool replay_gain;
234         FLAC__bool sector_align;
235         const char *cmdline_forced_outfilename;
236         const char *output_prefix;
237         analysis_options aopts;
238         int padding; /* -1 => no -P options were given, 0 => -P- was given, else -P value */
239         char apodizations[1000]; /* bad MAGIC NUMBER but buffer overflow is checked */
240         unsigned max_lpc_order;
241         unsigned qlp_coeff_precision;
242         const char *skip_specification;
243         const char *until_specification;
244         const char *cue_specification;
245         int format_is_big_endian;
246         int format_is_unsigned_samples;
247         int format_channels;
248         int format_bps;
249         int format_sample_rate;
250         off_t format_input_size;
251         int blocksize;
252         int min_residual_partition_order;
253         int max_residual_partition_order;
254         int rice_parameter_search_dist;
255         char requested_seek_points[5000]; /* bad MAGIC NUMBER but buffer overflow is checked */
256         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
257         const char *cuesheet_filename;
258         FLAC__bool cued_seekpoints;
259
260         unsigned num_files;
261         char **filenames;
262
263         FLAC__StreamMetadata *vorbis_comment;
264         FLAC__StreamMetadata *pictures[64];
265         unsigned num_pictures;
266
267         struct {
268                 FLAC__bool disable_constant_subframes;
269                 FLAC__bool disable_fixed_subframes;
270                 FLAC__bool disable_verbatim_subframes;
271         } debug;
272 } option_values;
273
274
275 /*
276  * miscellaneous globals
277  */
278
279 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
280 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
281 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
282
283
284 int main(int argc, char *argv[])
285 {
286         int retval = 0;
287
288 #ifdef __EMX__
289         _response(&argc, &argv);
290         _wildcard(&argc, &argv);
291 #endif
292
293         srand(time(0));
294         setlocale(LC_ALL, "");
295         if(!init_options()) {
296                 flac__utils_printf(stderr, 1, "ERROR: allocating memory\n");
297                 retval = 1;
298         }
299         else {
300                 if((retval = parse_options(argc, argv)) == 0)
301                         retval = do_it();
302         }
303
304         free_options();
305
306         return retval;
307 }
308
309 int do_it()
310 {
311         int retval = 0;
312
313         if(option_values.show_version) {
314                 show_version();
315                 return 0;
316         }
317         else if(option_values.show_explain) {
318                 show_explain();
319                 return 0;
320         }
321         else if(option_values.show_help) {
322                 show_help();
323                 return 0;
324         }
325         else {
326                 if(option_values.num_files == 0) {
327                         if(flac__utils_verbosity_ >= 1)
328                                 short_usage();
329                         return 0;
330                 }
331
332                 /*
333                  * tweak options; validate the values
334                  */
335                 if(!option_values.mode_decode) {
336                         if(option_values.blocksize < 0) {
337                                 if(option_values.max_lpc_order == 0)
338                                         option_values.blocksize = 1152;
339                                 else
340                                         option_values.blocksize = 4608;
341                         }
342                         if(option_values.max_residual_partition_order < 0) {
343                                 if(option_values.blocksize <= 1152)
344                                         option_values.max_residual_partition_order = 2;
345                                 else if(option_values.blocksize <= 2304)
346                                         option_values.max_residual_partition_order = 3;
347                                 else if(option_values.blocksize <= 4608)
348                                         option_values.max_residual_partition_order = 3;
349                                 else
350                                         option_values.max_residual_partition_order = 4;
351                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
352                         }
353                         if(option_values.rice_parameter_search_dist < 0) {
354                                 option_values.rice_parameter_search_dist = 0;
355                         }
356                         if(0 != option_values.cue_specification)
357                                 return usage_error("ERROR: --cue is not allowed in test mode\n");
358                 }
359                 else {
360                         if(option_values.test_only) {
361                                 if(0 != option_values.skip_specification)
362                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
363                                 if(0 != option_values.until_specification)
364                                         return usage_error("ERROR: --until is not allowed in test mode\n");
365                                 if(0 != option_values.cue_specification)
366                                         return usage_error("ERROR: --cue is not allowed in test mode\n");
367                                 if(0 != option_values.analyze)
368                                         return usage_error("ERROR: analysis mode (-a/--analyze) and test mode (-t/--test) cannot be used together\n");
369                         }
370                 }
371
372                 if(0 != option_values.cue_specification && (0 != option_values.skip_specification || 0 != option_values.until_specification))
373                         return usage_error("ERROR: --cue may not be combined with --skip or --until\n");
374
375                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
376
377                 if(option_values.format_channels >= 0) {
378                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
379                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
380                 }
381                 if(option_values.format_bps >= 0) {
382                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
383                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
384                 }
385                 if(option_values.format_sample_rate >= 0) {
386                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
387                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
388                 }
389                 if(option_values.force_raw_format && option_values.force_aiff_format)
390                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
391                 if(option_values.mode_decode) {
392                         if(!option_values.force_raw_format) {
393                                 if(option_values.format_is_big_endian >= 0)
394                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
395                                 if(option_values.format_is_unsigned_samples >= 0)
396                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
397                         }
398                         if(option_values.format_channels >= 0)
399                                 return usage_error("ERROR: --channels not allowed with --decode\n");
400                         if(option_values.format_bps >= 0)
401                                 return usage_error("ERROR: --bps not allowed with --decode\n");
402                         if(option_values.format_sample_rate >= 0)
403                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
404                 }
405                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
406                         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);
407                 }
408                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
409                         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);
410                 }
411
412                 if(option_values.sector_align) {
413                         if(option_values.mode_decode)
414                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
415                         if(0 != option_values.skip_specification)
416                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
417                         if(0 != option_values.until_specification)
418                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
419                         if(0 != option_values.cue_specification)
420                                 return usage_error("ERROR: --sector-align not allowed with --cue\n");
421                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
422                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
423                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
424                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
425                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
426                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
427                 }
428                 if(option_values.replay_gain) {
429                         if(option_values.force_to_stdout)
430                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
431                         if(option_values.mode_decode)
432                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
433                         if(option_values.format_channels > 2)
434                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
435                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
436                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
437                         /*
438                          * We want to reserve padding space for the ReplayGain
439                          * tags that we will set later, to avoid rewriting the
440                          * whole file.
441                          */
442                         if(option_values.padding <= 0) {
443                                 flac__utils_printf(stderr, 1, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
444                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
445                         }
446                         else {
447                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
448                         }
449                 }
450                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
451                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
452                 }
453                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
454                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
455                 }
456                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
457                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
458                 }
459         }
460
461         flac__utils_printf(stderr, 2, "\n");
462         flac__utils_printf(stderr, 2, "flac %s, Copyright (C) 2000,2001,2002,2003,2004,2005,2006  Josh Coalson\n", FLAC__VERSION_STRING);
463         flac__utils_printf(stderr, 2, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
464         flac__utils_printf(stderr, 2, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
465
466         if(!option_values.mode_decode) {
467                 char padopt[16];
468                 if(option_values.padding == 0)
469                         strcpy(padopt, "-");
470                 else
471                         sprintf(padopt, " %d", option_values.padding > 0? option_values.padding : FLAC_ENCODE__DEFAULT_PADDING);
472                 flac__utils_printf(stderr, 2,
473                         "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
474                         option_values.delete_input?" --delete-input-file":"",
475                         option_values.sector_align?" --sector-align":"",
476                         option_values.use_ogg?" --ogg":"",
477                         option_values.lax?" --lax":"",
478                         padopt,
479                         (unsigned)option_values.blocksize,
480                         option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
481                         option_values.max_lpc_order,
482                         option_values.do_exhaustive_model_search?" -e":"",
483                         option_values.do_escape_coding?" -E":"",
484                         option_values.do_qlp_coeff_prec_search?" -p":"",
485                         option_values.qlp_coeff_precision,
486                         (unsigned)option_values.min_residual_partition_order,
487                         (unsigned)option_values.max_residual_partition_order,
488                         option_values.verify? " -V":""
489                 );
490         }
491
492         if(option_values.mode_decode) {
493                 FLAC__bool first = true;
494
495                 if(option_values.num_files == 0) {
496                         retval = decode_file("-");
497                 }
498                 else {
499                         unsigned i;
500                         if(option_values.num_files > 1)
501                                 option_values.cmdline_forced_outfilename = 0;
502                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
503                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
504                                         continue;
505                                 retval |= decode_file(option_values.filenames[i]);
506                                 first = false;
507                         }
508                 }
509         }
510         else { /* encode */
511                 FLAC__bool first = true;
512
513                 if(option_values.num_files == 0) {
514                         retval = encode_file("-", first, true);
515                 }
516                 else {
517                         unsigned i;
518                         if(option_values.num_files > 1)
519                                 option_values.cmdline_forced_outfilename = 0;
520                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
521                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
522                                         continue;
523                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
524                                 first = false;
525                         }
526                         if(option_values.replay_gain && retval == 0) {
527                                 float album_gain, album_peak;
528                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
529                                 for(i = 0; i < option_values.num_files; i++) {
530                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
531                                         if(0 == outfilename) {
532                                                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", option_values.filenames[i]);
533                                                 return 1;
534                                         }
535                                         if(0 == strcmp(option_values.filenames[i], "-")) {
536                                                 FLAC__ASSERT(0);
537                                                 /* double protection */
538                                                 flac__utils_printf(stderr, 1, "internal error\n");
539                                                 return 2;
540                                         }
541                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
542                                                 flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain album tags (%s)\n", outfilename, error);
543                                                 retval = 1;
544                                         }
545                                 }
546                         }
547                 }
548         }
549
550         return retval;
551 }
552
553 FLAC__bool init_options()
554 {
555         option_values.show_help = false;
556         option_values.show_explain = false;
557         option_values.mode_decode = false;
558         option_values.verify = false;
559         option_values.force_file_overwrite = false;
560         option_values.continue_through_decode_errors = false;
561         option_values.replaygain_synthesis_spec.apply = false;
562         option_values.replaygain_synthesis_spec.use_album_gain = true;
563         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
564         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
565         option_values.replaygain_synthesis_spec.preamp = 0.0;
566         option_values.lax = false;
567         option_values.test_only = false;
568         option_values.analyze = false;
569         option_values.use_ogg = false;
570         option_values.has_serial_number = false;
571         option_values.serial_number = 0;
572         option_values.do_mid_side = true;
573         option_values.loose_mid_side = false;
574         option_values.do_exhaustive_model_search = false;
575         option_values.do_escape_coding = false;
576         option_values.do_qlp_coeff_prec_search = false;
577         option_values.force_to_stdout = false;
578         option_values.force_aiff_format = false;
579         option_values.force_raw_format = false;
580         option_values.delete_input = false;
581         option_values.replay_gain = false;
582         option_values.sector_align = false;
583         option_values.cmdline_forced_outfilename = 0;
584         option_values.output_prefix = 0;
585         option_values.aopts.do_residual_text = false;
586         option_values.aopts.do_residual_gnuplot = false;
587         option_values.padding = -1;
588         option_values.apodizations[0] = '\0';
589         option_values.max_lpc_order = 8;
590         option_values.qlp_coeff_precision = 0;
591         option_values.skip_specification = 0;
592         option_values.until_specification = 0;
593         option_values.cue_specification = 0;
594         option_values.format_is_big_endian = -1;
595         option_values.format_is_unsigned_samples = -1;
596         option_values.format_channels = -1;
597         option_values.format_bps = -1;
598         option_values.format_sample_rate = -1;
599         option_values.format_input_size = (off_t)(-1);
600         option_values.blocksize = -1;
601         option_values.min_residual_partition_order = -1;
602         option_values.max_residual_partition_order = -1;
603         option_values.rice_parameter_search_dist = -1;
604         option_values.requested_seek_points[0] = '\0';
605         option_values.num_requested_seek_points = -1;
606         option_values.cuesheet_filename = 0;
607         option_values.cued_seekpoints = true;
608
609         option_values.num_files = 0;
610         option_values.filenames = 0;
611
612         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
613                 return false;
614         option_values.num_pictures = 0;
615
616         option_values.debug.disable_constant_subframes = false;
617         option_values.debug.disable_fixed_subframes = false;
618         option_values.debug.disable_verbatim_subframes = false;
619
620         return true;
621 }
622
623 int parse_options(int argc, char *argv[])
624 {
625         int short_option;
626         int option_index = 1;
627         FLAC__bool had_error = false;
628         const char *short_opts = "0123456789aA:b:cdefFhHl:mMo:pP:q:r:sS:tT:vV";
629
630         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
631                 switch (short_option) {
632                         case 0: /* long option with no equivalent short option */
633                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
634                                 break;
635                         case '?':
636                         case ':':
637                                 had_error = true;
638                                 break;
639                         default: /* short option */
640                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
641                                 break;
642                 }
643         }
644
645         if(had_error) {
646                 return 1;
647         }
648
649         FLAC__ASSERT(share__optind <= argc);
650
651         option_values.num_files = argc - share__optind;
652
653         if(option_values.num_files > 0) {
654                 unsigned i = 0;
655                 if(0 == (option_values.filenames = (char**)malloc(sizeof(char*) * option_values.num_files)))
656                         die("out of memory allocating space for file names list");
657                 while(share__optind < argc)
658                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
659         }
660
661         return 0;
662 }
663
664 int parse_option(int short_option, const char *long_option, const char *option_argument)
665 {
666         const char *violation;
667         char *p;
668
669         if(short_option == 0) {
670                 FLAC__ASSERT(0 != long_option);
671                 if(0 == strcmp(long_option, "totally-silent")) {
672                         flac__utils_verbosity_ = 0;
673                 }
674                 else if(0 == strcmp(long_option, "delete-input-file")) {
675                         option_values.delete_input = true;
676                 }
677                 else if(0 == strcmp(long_option, "output-prefix")) {
678                         FLAC__ASSERT(0 != option_argument);
679                         option_values.output_prefix = option_argument;
680                 }
681                 else if(0 == strcmp(long_option, "skip")) {
682                         FLAC__ASSERT(0 != option_argument);
683                         option_values.skip_specification = option_argument;
684                 }
685                 else if(0 == strcmp(long_option, "until")) {
686                         FLAC__ASSERT(0 != option_argument);
687                         option_values.until_specification = option_argument;
688                 }
689                 else if(0 == strcmp(long_option, "input-size")) {
690                         FLAC__ASSERT(0 != option_argument);
691                         {
692                                 char *end;
693 #ifdef _MSC_VER
694                                 FLAC__int64 i;
695                                 i = strtol(option_argument, &end, 10); /* [2G limit] */
696 #else
697                                 long long i;
698                                 i = strtoll(option_argument, &end, 10);
699 #endif
700                                 if(0 == strlen(option_argument) || *end)
701                                         return usage_error("ERROR: --%s must be a number\n", long_option);
702                                 option_values.format_input_size = (off_t)i;
703                                 if(option_values.format_input_size != i) /* check if off_t is smaller than long long */
704                                         return usage_error("ERROR: --%s too large; this flac does not support filesizes over 2GB\n", long_option);
705                                 if(option_values.format_input_size <= 0)
706                                         return usage_error("ERROR: --%s must be > 0\n", long_option);
707                         }
708                 }
709                 else if(0 == strcmp(long_option, "cue")) {
710                         FLAC__ASSERT(0 != option_argument);
711                         option_values.cue_specification = option_argument;
712                 }
713                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
714                         option_values.replaygain_synthesis_spec.apply = true;
715                         if (0 != option_argument) {
716                                 char *p;
717                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
718                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
719                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
720                                 for ( ; *p; p++) {
721                                         if (*p == 'a')
722                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
723                                         else if (*p == 't')
724                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
725                                         else if (*p == 'l')
726                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
727                                         else if (*p == 'L')
728                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
729                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
730                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
731                                                 p++;
732                                         }
733                                         else
734                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
735                                 }
736                         }
737                 }
738                 else if(0 == strcmp(long_option, "cuesheet")) {
739                         FLAC__ASSERT(0 != option_argument);
740                         option_values.cuesheet_filename = option_argument;
741                 }
742                 else if(0 == strcmp(long_option, "picture")) {
743                         const unsigned max_pictures = sizeof(option_values.pictures)/sizeof(option_values.pictures[0]);
744                         FLAC__ASSERT(0 != option_argument);
745                         if(option_values.num_pictures >= max_pictures)
746                                 return usage_error("ERROR: too many --picture arguments, only %u allowed\n", max_pictures);
747                         if(0 == (option_values.pictures[option_values.num_pictures] = grabbag__picture_parse_specification(option_argument, &violation)))
748                                 return usage_error("ERROR: (--picture) %s\n", violation);
749                         option_values.num_pictures++;
750                 }
751                 else if(0 == strcmp(long_option, "tag-from-file")) {
752                         FLAC__ASSERT(0 != option_argument);
753                         if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/true, &violation))
754                                 return usage_error("ERROR: (--tag-from-file) %s\n", violation);
755                 }
756                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
757                         option_values.cued_seekpoints = false;
758                 }
759                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
760                         option_values.lax = true;
761                         option_values.do_exhaustive_model_search = true;
762                         option_values.do_escape_coding = true;
763                         option_values.do_mid_side = true;
764                         option_values.loose_mid_side = false;
765                         option_values.do_qlp_coeff_prec_search = true;
766                         option_values.min_residual_partition_order = 0;
767                         option_values.max_residual_partition_order = 16;
768                         option_values.rice_parameter_search_dist = 0;
769                         option_values.max_lpc_order = 32;
770                 }
771                 else if(0 == strcmp(long_option, "force-aiff-format")) {
772                         option_values.force_aiff_format = true;
773                 }
774                 else if(0 == strcmp(long_option, "force-raw-format")) {
775                         option_values.force_raw_format = true;
776                 }
777                 else if(0 == strcmp(long_option, "lax")) {
778                         option_values.lax = true;
779                 }
780                 else if(0 == strcmp(long_option, "replay-gain")) {
781                         option_values.replay_gain = true;
782                 }
783                 else if(0 == strcmp(long_option, "sector-align")) {
784                         option_values.sector_align = true;
785                 }
786 #ifdef FLAC__HAS_OGG
787                 else if(0 == strcmp(long_option, "ogg")) {
788                         option_values.use_ogg = true;
789                 }
790                 else if(0 == strcmp(long_option, "serial-number")) {
791                         option_values.has_serial_number = true;
792                         option_values.serial_number = atol(option_argument);
793                 }
794 #endif
795                 else if(0 == strcmp(long_option, "endian")) {
796                         FLAC__ASSERT(0 != option_argument);
797                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
798                                 option_values.format_is_big_endian = true;
799                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
800                                 option_values.format_is_big_endian = false;
801                         else
802                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
803                 }
804                 else if(0 == strcmp(long_option, "channels")) {
805                         FLAC__ASSERT(0 != option_argument);
806                         option_values.format_channels = atoi(option_argument);
807                 }
808                 else if(0 == strcmp(long_option, "bps")) {
809                         FLAC__ASSERT(0 != option_argument);
810                         option_values.format_bps = atoi(option_argument);
811                 }
812                 else if(0 == strcmp(long_option, "sample-rate")) {
813                         FLAC__ASSERT(0 != option_argument);
814                         option_values.format_sample_rate = atoi(option_argument);
815                 }
816                 else if(0 == strcmp(long_option, "sign")) {
817                         FLAC__ASSERT(0 != option_argument);
818                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
819                                 option_values.format_is_unsigned_samples = false;
820                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
821                                 option_values.format_is_unsigned_samples = true;
822                         else
823                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
824                 }
825                 else if(0 == strcmp(long_option, "residual-gnuplot")) {
826                         option_values.aopts.do_residual_gnuplot = true;
827                 }
828                 else if(0 == strcmp(long_option, "residual-text")) {
829                         option_values.aopts.do_residual_text = true;
830                 }
831                 /*
832                  * negatives
833                  */
834                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
835                         option_values.continue_through_decode_errors = false;
836                 }
837                 else if(0 == strcmp(long_option, "no-silent")) {
838                         flac__utils_verbosity_ = 2;
839                 }
840                 else if(0 == strcmp(long_option, "no-force")) {
841                         option_values.force_file_overwrite = false;
842                 }
843                 else if(0 == strcmp(long_option, "no-seektable")) {
844                         option_values.num_requested_seek_points = 0;
845                         option_values.requested_seek_points[0] = '\0';
846                 }
847                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
848                         option_values.delete_input = false;
849                 }
850                 else if(0 == strcmp(long_option, "no-replay-gain")) {
851                         option_values.replay_gain = false;
852                 }
853                 else if(0 == strcmp(long_option, "no-sector-align")) {
854                         option_values.sector_align = false;
855                 }
856                 else if(0 == strcmp(long_option, "no-lax")) {
857                         option_values.lax = false;
858                 }
859 #ifdef FLAC__HAS_OGG
860                 else if(0 == strcmp(long_option, "no-ogg")) {
861                         option_values.use_ogg = false;
862                 }
863 #endif
864                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
865                         option_values.do_exhaustive_model_search = false;
866                 }
867                 else if(0 == strcmp(long_option, "no-mid-side")) {
868                         option_values.do_mid_side = option_values.loose_mid_side = false;
869                 }
870                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
871                         option_values.loose_mid_side = option_values.do_mid_side = false;
872                 }
873                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
874                         option_values.do_qlp_coeff_prec_search = false;
875                 }
876                 else if(0 == strcmp(long_option, "no-padding")) {
877                         option_values.padding = 0;
878                 }
879                 else if(0 == strcmp(long_option, "no-verify")) {
880                         option_values.verify = false;
881                 }
882                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
883                         option_values.aopts.do_residual_gnuplot = false;
884                 }
885                 else if(0 == strcmp(long_option, "no-residual-text")) {
886                         option_values.aopts.do_residual_text = false;
887                 }
888                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
889                         option_values.debug.disable_constant_subframes = true;
890                 }
891                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
892                         option_values.debug.disable_fixed_subframes = true;
893                 }
894                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
895                         option_values.debug.disable_verbatim_subframes = true;
896                 }
897         }
898         else {
899                 switch(short_option) {
900                         case 'h':
901                                 option_values.show_help = true;
902                                 break;
903                         case 'H':
904                                 option_values.show_explain = true;
905                                 break;
906                         case 'v':
907                                 option_values.show_version = true;
908                                 break;
909                         case 'd':
910                                 option_values.mode_decode = true;
911                                 break;
912                         case 'a':
913                                 option_values.mode_decode = true;
914                                 option_values.analyze = true;
915                                 break;
916                         case 't':
917                                 option_values.mode_decode = true;
918                                 option_values.test_only = true;
919                                 break;
920                         case 'c':
921                                 option_values.force_to_stdout = true;
922                                 break;
923                         case 's':
924                                 flac__utils_verbosity_ = 1;
925                                 break;
926                         case 'f':
927                                 option_values.force_file_overwrite = true;
928                                 break;
929                         case 'o':
930                                 FLAC__ASSERT(0 != option_argument);
931                                 option_values.cmdline_forced_outfilename = option_argument;
932                                 break;
933                         case 'F':
934                                 option_values.continue_through_decode_errors = true;
935                                 break;
936                         case 'T':
937                                 FLAC__ASSERT(0 != option_argument);
938                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/false, &violation))
939                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
940                                 break;
941                         case '0':
942                                 option_values.do_exhaustive_model_search = false;
943                                 option_values.do_escape_coding = false;
944                                 option_values.do_mid_side = false;
945                                 option_values.loose_mid_side = false;
946                                 option_values.qlp_coeff_precision = 0;
947                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
948                                 option_values.rice_parameter_search_dist = 0;
949                                 option_values.max_lpc_order = 0;
950                                 break;
951                         case '1':
952                                 option_values.do_exhaustive_model_search = false;
953                                 option_values.do_escape_coding = false;
954                                 option_values.do_mid_side = true;
955                                 option_values.loose_mid_side = true;
956                                 option_values.qlp_coeff_precision = 0;
957                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
958                                 option_values.rice_parameter_search_dist = 0;
959                                 option_values.max_lpc_order = 0;
960                                 break;
961                         case '2':
962                                 option_values.do_exhaustive_model_search = false;
963                                 option_values.do_escape_coding = false;
964                                 option_values.do_mid_side = true;
965                                 option_values.loose_mid_side = false;
966                                 option_values.qlp_coeff_precision = 0;
967                                 option_values.min_residual_partition_order = 0;
968                                 option_values.max_residual_partition_order = 3;
969                                 option_values.rice_parameter_search_dist = 0;
970                                 option_values.max_lpc_order = 0;
971                                 break;
972                         case '3':
973                                 option_values.do_exhaustive_model_search = false;
974                                 option_values.do_escape_coding = false;
975                                 option_values.do_mid_side = false;
976                                 option_values.loose_mid_side = false;
977                                 option_values.qlp_coeff_precision = 0;
978                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
979                                 option_values.rice_parameter_search_dist = 0;
980                                 option_values.max_lpc_order = 6;
981                                 break;
982                         case '4':
983                                 option_values.do_exhaustive_model_search = false;
984                                 option_values.do_escape_coding = false;
985                                 option_values.do_mid_side = true;
986                                 option_values.loose_mid_side = true;
987                                 option_values.qlp_coeff_precision = 0;
988                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
989                                 option_values.rice_parameter_search_dist = 0;
990                                 option_values.max_lpc_order = 8;
991                                 break;
992                         case '5':
993                                 option_values.do_exhaustive_model_search = false;
994                                 option_values.do_escape_coding = false;
995                                 option_values.do_mid_side = true;
996                                 option_values.loose_mid_side = false;
997                                 option_values.qlp_coeff_precision = 0;
998                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
999                                 option_values.rice_parameter_search_dist = 0;
1000                                 option_values.max_lpc_order = 8;
1001                                 break;
1002                         case '6':
1003                                 option_values.do_exhaustive_model_search = false;
1004                                 option_values.do_escape_coding = false;
1005                                 option_values.do_mid_side = true;
1006                                 option_values.loose_mid_side = false;
1007                                 option_values.qlp_coeff_precision = 0;
1008                                 option_values.min_residual_partition_order = 0;
1009                                 option_values.max_residual_partition_order = 4;
1010                                 option_values.rice_parameter_search_dist = 0;
1011                                 option_values.max_lpc_order = 8;
1012                                 break;
1013                         case '7':
1014                                 option_values.do_exhaustive_model_search = true;
1015                                 option_values.do_escape_coding = false;
1016                                 option_values.do_mid_side = true;
1017                                 option_values.loose_mid_side = false;
1018                                 option_values.qlp_coeff_precision = 0;
1019                                 option_values.min_residual_partition_order = 0;
1020                                 option_values.max_residual_partition_order = 6;
1021                                 option_values.rice_parameter_search_dist = 0;
1022                                 option_values.max_lpc_order = 8;
1023                                 break;
1024                         case '8':
1025                                 option_values.do_exhaustive_model_search = true;
1026                                 option_values.do_escape_coding = false;
1027                                 option_values.do_mid_side = true;
1028                                 option_values.loose_mid_side = false;
1029                                 option_values.qlp_coeff_precision = 0;
1030                                 option_values.min_residual_partition_order = 0;
1031                                 option_values.max_residual_partition_order = 6;
1032                                 option_values.rice_parameter_search_dist = 0;
1033                                 option_values.max_lpc_order = 12;
1034                                 break;
1035                         case '9':
1036                                 return usage_error("ERROR: compression level '9' is reserved\n");
1037                         case 'V':
1038                                 option_values.verify = true;
1039                                 break;
1040                         case 'S':
1041                                 FLAC__ASSERT(0 != option_argument);
1042                                 if(0 == strcmp(option_argument, "-")) {
1043                                         option_values.num_requested_seek_points = 0;
1044                                         option_values.requested_seek_points[0] = '\0';
1045                                 }
1046                                 else {
1047                                         if(option_values.num_requested_seek_points < 0)
1048                                                 option_values.num_requested_seek_points = 0;
1049                                         option_values.num_requested_seek_points++;
1050                                         if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
1051                                                 return usage_error("ERROR: too many seekpoints requested\n");
1052                                         }
1053                                         else {
1054                                                 strcat(option_values.requested_seek_points, option_argument);
1055                                                 strcat(option_values.requested_seek_points, ";");
1056                                         }
1057                                 }
1058                                 break;
1059                         case 'P':
1060                                 FLAC__ASSERT(0 != option_argument);
1061                                 option_values.padding = atoi(option_argument);
1062                                 if(option_values.padding < 0)
1063                                         return usage_error("ERROR: argument to -P must be >= 0; for no padding use -P-\n");
1064                                 break;
1065                         case 'b':
1066                                 FLAC__ASSERT(0 != option_argument);
1067                                 option_values.blocksize = atoi(option_argument);
1068                                 break;
1069                         case 'e':
1070                                 option_values.do_exhaustive_model_search = true;
1071                                 break;
1072                         case 'E':
1073                                 option_values.do_escape_coding = true;
1074                                 break;
1075                         case 'l':
1076                                 FLAC__ASSERT(0 != option_argument);
1077                                 option_values.max_lpc_order = atoi(option_argument);
1078                                 break;
1079                         case 'A':
1080                                 FLAC__ASSERT(0 != option_argument);
1081                                 if(strlen(option_values.apodizations)+strlen(option_argument)+2 >= sizeof(option_values.apodizations)) {
1082                                         return usage_error("ERROR: too many apodization functions requested\n");
1083                                 }
1084                                 else {
1085                                         strcat(option_values.apodizations, option_argument);
1086                                         strcat(option_values.apodizations, ";");
1087                                 }
1088                                 break;
1089                         case 'm':
1090                                 option_values.do_mid_side = true;
1091                                 option_values.loose_mid_side = false;
1092                                 break;
1093                         case 'M':
1094                                 option_values.loose_mid_side = option_values.do_mid_side = true;
1095                                 break;
1096                         case 'p':
1097                                 option_values.do_qlp_coeff_prec_search = true;
1098                                 break;
1099                         case 'q':
1100                                 FLAC__ASSERT(0 != option_argument);
1101                                 option_values.qlp_coeff_precision = atoi(option_argument);
1102                                 break;
1103                         case 'r':
1104                                 FLAC__ASSERT(0 != option_argument);
1105                                 p = strchr(option_argument, ',');
1106                                 if(0 == p) {
1107                                         option_values.min_residual_partition_order = 0;
1108                                         option_values.max_residual_partition_order = atoi(option_argument);
1109                                 }
1110                                 else {
1111                                         option_values.min_residual_partition_order = atoi(option_argument);
1112                                         option_values.max_residual_partition_order = atoi(++p);
1113                                 }
1114                                 break;
1115                         case 'R':
1116                                 FLAC__ASSERT(0 != option_argument);
1117                                 option_values.rice_parameter_search_dist = atoi(option_argument);
1118                                 break;
1119                         default:
1120                                 FLAC__ASSERT(0);
1121                 }
1122         }
1123
1124         return 0;
1125 }
1126
1127 void free_options()
1128 {
1129         unsigned i;
1130         if(0 != option_values.filenames) {
1131                 for(i = 0; i < option_values.num_files; i++) {
1132                         if(0 != option_values.filenames[i])
1133                                 free(option_values.filenames[i]);
1134                 }
1135                 free(option_values.filenames);
1136         }
1137         if(0 != option_values.vorbis_comment)
1138                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1139         for(i = 0; i < option_values.num_pictures; i++)
1140                 FLAC__metadata_object_delete(option_values.pictures[i]);
1141 }
1142
1143 int usage_error(const char *message, ...)
1144 {
1145         if(flac__utils_verbosity_ >= 1) {
1146                 va_list args;
1147
1148                 FLAC__ASSERT(0 != message);
1149
1150                 va_start(args, message);
1151
1152                 (void) vfprintf(stderr, message, args);
1153
1154                 va_end(args);
1155
1156                 printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1157         }
1158
1159         return 1;
1160 }
1161
1162 void show_version()
1163 {
1164         printf("flac %s\n", FLAC__VERSION_STRING);
1165 }
1166
1167 static void usage_header()
1168 {
1169         printf("===============================================================================\n");
1170         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1171         printf("Copyright (C) 2000,2001,2002,2003,2004,2005,2006  Josh Coalson\n");
1172         printf("\n");
1173         printf("This program is free software; you can redistribute it and/or\n");
1174         printf("modify it under the terms of the GNU General Public License\n");
1175         printf("as published by the Free Software Foundation; either version 2\n");
1176         printf("of the License, or (at your option) any later version.\n");
1177         printf("\n");
1178         printf("This program is distributed in the hope that it will be useful,\n");
1179         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1180         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1181         printf("GNU General Public License for more details.\n");
1182         printf("\n");
1183         printf("You should have received a copy of the GNU General Public License\n");
1184         printf("along with this program; if not, write to the Free Software\n");
1185         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1186         printf("===============================================================================\n");
1187 }
1188
1189 static void usage_summary()
1190 {
1191         printf("Usage:\n");
1192         printf("\n");
1193         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1194         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1195         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1196         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1197         printf("\n");
1198 }
1199
1200 void short_usage()
1201 {
1202         usage_header();
1203         printf("\n");
1204         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1205         printf("instructions use 'flac --explain'\n");
1206         printf("\n");
1207         printf("To encode:\n");
1208         printf("  flac [-#] [INPUTFILE [...]]\n");
1209         printf("\n");
1210         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1211         printf("\n");
1212         printf("To decode:\n");
1213         printf("  flac -d [INPUTFILE [...]]\n");
1214         printf("\n");
1215         printf("To test:\n");
1216         printf("  flac -t [INPUTFILE [...]]\n");
1217 }
1218
1219 void show_help()
1220 {
1221         usage_header();
1222         usage_summary();
1223         printf("general options:\n");
1224         printf("  -v, --version                Show the flac version number\n");
1225         printf("  -h, --help                   Show this screen\n");
1226         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1227         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1228         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1229         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1230         printf("  -c, --stdout                 Write output to stdout\n");
1231         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1232         printf("      --totally-silent         Do not print anything, including errors\n");
1233         printf("  -f, --force                  Force overwriting of output files\n");
1234         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1235         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1236         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1237         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1238         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1239 #ifdef FLAC__HAS_OGG
1240         printf("      --ogg                    Use Ogg as transport layer\n");
1241         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1242 #endif
1243         printf("analysis options:\n");
1244         printf("      --residual-text          Include residual signal in text output\n");
1245         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1246         printf("decoding options:\n");
1247         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1248         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to decode\n");
1249         printf("encoding options:\n");
1250         printf("  -V, --verify                 Verify a correct encoding\n");
1251         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1252         printf("      --sector-align           Align multiple files on sector boundaries\n");
1253         printf("      --replay-gain            Calculate ReplayGain & store in FLAC tags\n");
1254         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1255         printf("      --picture=SPECIFICATION  Import picture and store in PICTURE block\n");
1256         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag; may appear multiple times\n");
1257         printf("      --tag-from-file=FIELD=FILENAME   Like --tag but gets value from file\n");
1258         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1259         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1260         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1261         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1262         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1263         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1264         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1265         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1266         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1267         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1268         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1269         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1270         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1271         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1272         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1273         printf("  -A, --apodization=\"function\"       Window audio data with given the function\n");
1274         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1275         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1276         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1277         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1278         printf("format options:\n");
1279         printf("      --endian={big|little}    Set byte order for samples\n");
1280         printf("      --channels=#             Number of channels\n");
1281         printf("      --bps=#                  Number of bits per sample\n");
1282         printf("      --sample-rate=#          Sample rate in Hz\n");
1283         printf("      --sign={signed|unsigned} Sign of samples\n");
1284         printf("      --input-size=#           Size of the raw input in bytes\n");
1285         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1286         printf("      --force-raw-format       Treat input or output as raw samples\n");
1287         printf("negative options:\n");
1288         printf("      --no-adaptive-mid-side\n");
1289         printf("      --no-decode-through-errors\n");
1290         printf("      --no-delete-input-file\n");
1291         printf("      --no-exhaustive-model-search\n");
1292         printf("      --no-lax\n");
1293         printf("      --no-mid-side\n");
1294 #ifdef FLAC__HAS_OGG
1295         printf("      --no-ogg\n");
1296 #endif
1297         printf("      --no-padding\n");
1298         printf("      --no-qlp-coeff-prec-search\n");
1299         printf("      --no-replay-gain\n");
1300         printf("      --no-residual-gnuplot\n");
1301         printf("      --no-residual-text\n");
1302         printf("      --no-sector-align\n");
1303         printf("      --no-seektable\n");
1304         printf("      --no-silent\n");
1305         printf("      --no-force\n");
1306         printf("      --no-verify\n");
1307 }
1308
1309 void show_explain()
1310 {
1311         usage_header();
1312         usage_summary();
1313         printf("For encoding:\n");
1314         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF (or uncompressed AIFF-C)\n");
1315         printf("  file, or raw samples.\n");
1316         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1317         printf("For decoding, the reverse is true.\n");
1318         printf("\n");
1319         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1320         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1321         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1322         printf("instead of:\n");
1323         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1324         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1325         printf("WAVE/AIFF header contents when necessary.\n");
1326         printf("\n");
1327         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1328         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1329         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1330         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1331         printf("files using -fr.\n");
1332         printf("\n");
1333         printf("general options:\n");
1334         printf("  -v, --version                Show the flac version number\n");
1335         printf("  -h, --help                   Show basic usage a list of all options\n");
1336         printf("  -H, --explain                Show this screen\n");
1337         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1338         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1339         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1340         printf("  -c, --stdout                 Write output to stdout\n");
1341         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1342         printf("      --totally-silent         Do not print anything of any kind, including\n");
1343         printf("                               warnings or errors.  The exit code will be the\n");
1344         printf("                               only way to determine successful completion.\n");
1345         printf("  -f, --force                  Force overwriting of output files\n");
1346         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1347         printf("                               changes the extension.  May only be used when\n");
1348         printf("                               encoding a single file.  May not be used in\n");
1349         printf("                               conjunction with --output-prefix.\n");
1350         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1351         printf("                               STRING.  This can be useful for encoding or\n");
1352         printf("                               decoding files to a different directory.  Make\n");
1353         printf("                               sure if your STRING is a path name that it ends\n");
1354         printf("                               with a '/' slash.\n");
1355         printf("      --delete-input-file      Automatically delete the input file after a\n");
1356         printf("                               successful encode or decode.  If there was an\n");
1357         printf("                               error (including a verify error) the input file\n");
1358         printf("                               is left intact.\n");
1359         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1360         printf("                               be used both for encoding and decoding.  The\n");
1361         printf("                               alternative form mm:ss.ss can be used to specify\n");
1362         printf("                               minutes, seconds, and fractions of a second.\n");
1363         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1364         printf("                               file.  The given sample number is not included\n");
1365         printf("                               in the decoded output.  The alternative form\n");
1366         printf("                               mm:ss.ss can be used to specify minutes,\n");
1367         printf("                               seconds, and fractions of a second.  If a `+'\n");
1368         printf("                               sign is at the beginning, the --until point is\n");
1369         printf("                               relative to the --skip point.  If a `-' sign is\n");
1370         printf("                               at the beginning, the --until point is relative\n");
1371         printf("                               to end of the audio.\n");
1372 #ifdef FLAC__HAS_OGG
1373         printf("      --ogg                    When encoding, generate Ogg FLAC output instead\n");
1374         printf("                               of native FLAC.  Ogg FLAC streams are FLAC\n");
1375         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1376         printf("                               resulting file should have an '.ogg' extension\n");
1377         printf("                               and will still be decodable by flac.  When\n");
1378         printf("                               decoding, force the input to be treated as\n");
1379         printf("                               Ogg FLAC.  This is useful when piping input\n");
1380         printf("                               from stdin or when the filename does not end in\n");
1381         printf("                               '.ogg'.\n");
1382         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1383         printf("                               encoding and no serial number is given, flac\n");
1384         printf("                               uses '0'.  When decoding and no number is\n");
1385         printf("                               given, flac uses the serial number of the first\n");
1386         printf("                               page.\n");
1387 #endif
1388         printf("analysis options:\n");
1389         printf("      --residual-text          Include residual signal in text output.  This\n");
1390         printf("                               will make the file very big, much larger than\n");
1391         printf("                               even the decoded file.\n");
1392         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1393         printf("                               of each subframe\n");
1394         printf("decoding options:\n");
1395         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1396         printf("                               and removes the partially decoded file if it\n");
1397         printf("                               encounters a bitstream error.  With -F, errors\n");
1398         printf("                               are still printed but flac will continue\n");
1399         printf("                               decoding to completion.  Note that errors may\n");
1400         printf("                               cause the decoded audio to be missing some\n");
1401         printf("                               samples or have silent sections.\n");
1402         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to\n");
1403         printf("                               decode.  The optional first #.# is the track and\n");
1404         printf("                               index point at which decoding will start; the\n");
1405         printf("                               default is the beginning of the stream.  The\n");
1406         printf("                               optional second #.# is the track and index point\n");
1407         printf("                               at which decoding will end; the default is the\n");
1408         printf("                               end of the stream.  If the cuepoint does not\n");
1409         printf("                               exist, the closest one before it (for the start\n");
1410         printf("                               point) or after it (for the end point) will be\n");
1411         printf("                               used.  The cuepoints are merely translated into\n");
1412         printf("                               sample numbers then used as --skip and --until.\n");
1413         printf("                               A CD track can always be cued by, for example,\n");
1414         printf("                               --cue=9.1-10.1 for track 9, even if the CD has\n");
1415         printf("                               no 10th track.\n");
1416         printf("encoding options:\n");
1417         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1418         printf("                               output in parallel and comparing to the\n");
1419         printf("                               original\n");
1420         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1421         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1422         printf("                               on sector boundaries.\n");
1423         printf("      --replay-gain            Calculate ReplayGain values and store them as\n");
1424         printf("                               FLAC tags.  Title gains/peaks will be computed\n");
1425         printf("                               for each file, and an album gain/peak will be\n");
1426         printf("                               computed for all files.  All input files must\n");
1427         printf("                               have the same resolution, sample rate, and\n");
1428         printf("                               number of channels.  The sample rate must be\n");
1429         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1430         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1431         printf("                               few extra bytes in the PADDING block.\n");
1432         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1433         printf("                               a CUESHEET metadata block.  This option may only\n");
1434         printf("                               be used when encoding a single file.  A\n");
1435         printf("                               seekpoint will be added for each index point in\n");
1436         printf("                               the cuesheet to the SEEKTABLE unless\n");
1437         printf("                               --no-cued-seekpoints is specified.\n");
1438         printf("      --picture=SPECIFICATION  Import a picture and store it in a PICTURE block.\n");
1439         printf("                               More than one --picture command can be specified.\n");
1440         printf("                               The SPECIFICATION is a string whose parts are\n");
1441         printf("                               separated by | characters.  Some parts may be\n");
1442         printf("                               left empty to invoke default values.  The format:\n");
1443         printf("         [TYPE]|MIME-TYPE|[DESCRIPTION]|[WIDTHxHEIGHTxDEPTH[/COLORS]]|FILE\n");
1444         printf("           TYPE is optional; it is a number from one of:\n");
1445         printf("              0: Other\n");
1446         printf("              1: 32x32 pixels 'file icon' (PNG only)\n");
1447         printf("              2: Other file icon\n");
1448         printf("              3: Cover (front)\n");
1449         printf("              4: Cover (back)\n");
1450         printf("              5: Leaflet page\n");
1451         printf("              6: Media (e.g. label side of CD)\n");
1452         printf("              7: Lead artist/lead performer/soloist\n");
1453         printf("              8: Artist/performer\n");
1454         printf("              9: Conductor\n");
1455         printf("             10: Band/Orchestra\n");
1456         printf("             11: Composer\n");
1457         printf("             12: Lyricist/text writer\n");
1458         printf("             13: Recording Location\n");
1459         printf("             14: During recording\n");
1460         printf("             15: During performance\n");
1461         printf("             16: Movie/video screen capture\n");
1462         printf("             17: A bright coloured fish\n");
1463         printf("             18: Illustration\n");
1464         printf("             19: Band/artist logotype\n");
1465         printf("             20: Publisher/Studio logotype\n");
1466         printf("             The default is 3 (front cover).  There may only be one picture each\n");
1467         printf("             of type 1 and 2 in a file.\n");
1468         printf("           MIME-TYPE is mandatory; for best compatibility with players, use\n");
1469         printf("             pictures with MIME type image/jpeg or image/png.  The MIME type can\n");
1470         printf("             also be --> to mean that FILE is actually a URL to an image, though\n");
1471         printf("             this use is discouraged.\n");
1472         printf("           DESCRIPTION is optional; the default is an empty string\n");
1473         printf("           The next part specfies the resolution and color information.  If\n");
1474         printf("             the MIME-TYPE is image/jpeg, image/png, or image/gif, you can\n");
1475         printf("             usually leave this empty and they can be detected from the file.\n");
1476         printf("             Otherwise, you must specify the width in pixels, height in pixels,\n");
1477         printf("             and color depth in bits-per-pixel.  If the image has indexed colors\n");
1478         printf("             you should also specify the number of colors used.\n");
1479         printf("           FILE is the path to the picture file to be imported, or the URL if\n");
1480         printf("             MIME type is -->\n");
1481         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag.  Make sure to quote the\n");
1482         printf("                               comment if necessary.  This option may appear\n");
1483         printf("                               more than once to add several comments.  NOTE:\n");
1484         printf("                               all tags will be added to all encoded files.\n");
1485         printf("      --tag-from-file=FIELD=FILENAME   Like --tag, except FILENAME is a file\n");
1486         printf("                               whose contents will be read verbatim to set the\n");
1487         printf("                               tag value.  The contents will be converted to\n");
1488         printf("                               UTF-8 from the local charset.  This can be used\n");
1489         printf("                               to store a cuesheet in a tag (e.g.\n");
1490         printf("                               --tag-from-file=\"CUESHEET=image.cue\").  Do not\n");
1491         printf("                               try to store binary data in tag fields!  Use\n");
1492         printf("                               APPLICATION blocks for that.\n");
1493         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1494         printf("       #  : a specific sample number for a seek point\n");
1495         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1496         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1497         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1498         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1499         printf("           ified union of all such values.\n");
1500         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1501         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1502         printf("           input size before starting.\n");
1503         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1504         printf("           either no seek point entered (if the input size is determinable\n");
1505         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1506         printf("           determinable)\n");
1507         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1508         printf("                               block of the given length (in bytes) after the\n");
1509         printf("                               STREAMINFO block.  This is useful if you plan\n");
1510         printf("                               to tag the file later with an APPLICATION\n");
1511         printf("                               block; instead of having to rewrite the entire\n");
1512         printf("                               file later just to insert your block, you can\n");
1513         printf("                               write directly over the PADDING block.  Note\n");
1514         printf("                               that the total length of the PADDING block will\n");
1515         printf("                               be 4 bytes longer than the length given because\n");
1516         printf("                               of the 4 metadata block header bytes.  You can\n");
1517         printf("                               force no PADDING block at all to be written with\n");
1518         printf("                               --no-padding.  The encoder writes a PADDING\n");
1519         printf("                               block of 4096 bytes by default.\n");
1520         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1521         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1522         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1523         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1524         printf("                               used)\n");
1525         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1526         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1527         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1528         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1529         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1530         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1531         printf("                                     -5 is the default setting\n");
1532         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1533         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1534         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1535         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1536         printf("                                     (stereo only)\n");
1537         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1538         printf("                                     (stereo only)\n");
1539         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1540         printf("  -A, --apodization=\"function\"       Window audio data with given the function.\n");
1541         printf("                                     The functions are: bartlett, bartlett_hann,\n");
1542         printf("                                     blackman, blackman_harris_4term_92db,\n");
1543         printf("                                     connes, flattop, gauss(STDDEV), hamming,\n");
1544         printf("                                     hann, kaiser_bessel, nuttall, rectangle,\n");
1545         printf("                                     triangle, tukey(P), welch.  More than one\n");
1546         printf("                                     may be specified but encoding time is a\n");
1547         printf("                                     multiple of the number of functions since\n");
1548         printf("                                     they are each tried in turn.  The encoder\n");
1549         printf("                                     chooses suitable defaults in the absence\n");
1550         printf("                                     of any -A options.\n");
1551         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1552         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1553         printf("                                     quantization (expensive!); overrides -q;\n");
1554         printf("                                     does nothing if using -l 0\n");
1555         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1556         printf("                                     linear-predictor coefficients; 0 => let\n");
1557         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1558         printf("                                     default is -q 0)\n");
1559         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1560         printf("                                     (# is 0..16; min defaults to 0; the\n");
1561         printf("                                     default is -r 0; above 4 doesn't usually\n");
1562         printf("                                     help much)\n");
1563         printf("format options:\n");
1564         printf("      --endian={big|little}    Set byte order for samples\n");
1565         printf("      --channels=#             Number of channels\n");
1566         printf("      --bps=#                  Number of bits per sample\n");
1567         printf("      --sample-rate=#          Sample rate in Hz\n");
1568         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1569         printf("      --input-size=#           Size of the raw input in bytes.  If you are\n");
1570         printf("                               encoding raw samples from stdin, you must set\n");
1571         printf("                               this option in order to be able to use --skip,\n");
1572         printf("                               --until, --cue-sheet, or other options that need\n");
1573         printf("                               to know the size of the input beforehand.  If\n");
1574         printf("                               the size given is greater than what is found in\n");
1575         printf("                               the input stream, the encoder will complain\n");
1576         printf("                               about an unexpected end-of-file.  If the size\n");
1577         printf("                               given is less, samples will be truncated.\n");
1578         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1579         printf("                               option is not needed if the output filename (as\n");
1580         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1581         printf("                               has no effect when encoding since input AIFF is\n");
1582         printf("                               auto-detected.\n");
1583         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1584         printf("                               decoding) to be treated as raw samples\n");
1585         printf("negative options:\n");
1586         printf("      --no-adaptive-mid-side\n");
1587         printf("      --no-decode-through-errors\n");
1588         printf("      --no-delete-input-file\n");
1589         printf("      --no-exhaustive-model-search\n");
1590         printf("      --no-lax\n");
1591         printf("      --no-mid-side\n");
1592 #ifdef FLAC__HAS_OGG
1593         printf("      --no-ogg\n");
1594 #endif
1595         printf("      --no-padding\n");
1596         printf("      --no-qlp-coeff-prec-search\n");
1597         printf("      --no-residual-gnuplot\n");
1598         printf("      --no-residual-text\n");
1599         printf("      --no-sector-align\n");
1600         printf("      --no-seektable\n");
1601         printf("      --no-silent\n");
1602         printf("      --no-force\n");
1603         printf("      --no-verify\n");
1604 }
1605
1606 void format_mistake(const char *infilename, const char *wrong, const char *right)
1607 {
1608         flac__utils_printf(stderr, 1, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1609 }
1610
1611 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1612 {
1613         FILE *encode_infile;
1614         FLAC__byte lookahead[12];
1615         unsigned lookahead_length = 0;
1616         FileFormat fmt = RAW;
1617         FLAC__bool is_aifc = false;
1618         int retval;
1619         off_t infilesize;
1620         encode_options_t common_options;
1621         const char *outfilename = get_encoded_outfilename(infilename); /* the final name of the encoded file */
1622         /* internal_outfilename is the file we will actually write to; it will be a temporary name if infilename==outfilename */
1623         char *internal_outfilename = 0; /* NULL implies 'use outfilename' */
1624
1625         if(0 == outfilename) {
1626                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1627                 return 1;
1628         }
1629
1630         if(0 == strcmp(infilename, "-")) {
1631                 infilesize = (off_t)(-1);
1632                 encode_infile = grabbag__file_get_binary_stdin();
1633         }
1634         else {
1635                 infilesize = grabbag__file_get_filesize(infilename);
1636                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1637                         flac__utils_printf(stderr, 1, "ERROR: can't open input file %s: %s\n", infilename, strerror(errno));
1638                         return 1;
1639                 }
1640         }
1641
1642         if(!option_values.force_raw_format) {
1643                 /* first set format based on name */
1644                 if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".wav"))
1645                         fmt= WAV;
1646                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".aif"))
1647                         fmt= AIF;
1648                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".aiff"))
1649                         fmt= AIF;
1650                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".flac"))
1651                         fmt= FLAC;
1652
1653                 /* attempt to guess the file type based on the first 12 bytes */
1654                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1655                         if(fmt != RAW)
1656                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1657                         fmt= RAW;
1658                 }
1659                 else {
1660                         if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1661                                 fmt= WAV;
1662                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1663                                 fmt= AIF;
1664                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFC", 4)) {
1665                                 fmt= AIF;
1666                                 is_aifc = true;
1667                         }
1668                         else if(!memcmp(lookahead, FLAC__STREAM_SYNC_STRING, sizeof(FLAC__STREAM_SYNC_STRING)))
1669                                 fmt= FLAC;
1670                         else {
1671                                 if(fmt != RAW)
1672                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1673                                 fmt= RAW;
1674                         }
1675                 }
1676         }
1677
1678         /*
1679          * Error if output file already exists (and -f not used).
1680          * Use grabbag__file_get_filesize() as a cheap way to check.
1681          */
1682         if(!option_values.test_only && !option_values.force_file_overwrite && strcmp(outfilename, "-") && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1683                 if(fmt == FLAC) {
1684                         /* need more detailed error message when re-flac'ing to avoid confusing the user */
1685                         flac__utils_printf(stderr, 1,
1686                                 "ERROR: output file %s already exists.\n\n"
1687                                 "By default flac encodes files to FLAC format; if you meant to decode this file\n"
1688                                 "from FLAC to something else, use -d.  If you meant to re-encode this file from\n"
1689                                 "FLAC to FLAC again, use -f to force writing to the same file, or -o to specify\n"
1690                                 "a different output filename.\n",
1691                                 outfilename
1692                         );
1693                 }
1694                 else
1695                         flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1696                 return 1;
1697         }
1698
1699         if(option_values.format_input_size >= 0) {
1700                 if (fmt != RAW || infilesize >= 0) {
1701                         flac__utils_printf(stderr, 1, "ERROR: can only use --input-size when encoding raw samples from stdin\n");
1702                         return 1;
1703                 }
1704                 else {
1705                         infilesize = option_values.format_input_size;
1706                 }
1707         }
1708
1709         if(option_values.sector_align && fmt == FLAC) {
1710                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input file is FLAC\n");
1711                 return 1;
1712         }
1713         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1714                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input size is unknown\n");
1715                 return 1;
1716         }
1717
1718         if(fmt == RAW) {
1719                 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)
1720                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1721         }
1722
1723         if(encode_infile == stdin || option_values.force_to_stdout) {
1724                 if(option_values.replay_gain)
1725                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1726         }
1727
1728         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1729                 return usage_error("ERROR: invalid value for --skip\n");
1730
1731         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 */
1732                 return usage_error("ERROR: invalid value for --until\n");
1733         /* if there is no "--until" we want to default to "--until=-0" */
1734         if(0 == option_values.until_specification)
1735                 common_options.until_specification.is_relative = true;
1736
1737         common_options.verify = option_values.verify;
1738 #ifdef FLAC__HAS_OGG
1739         common_options.use_ogg = option_values.use_ogg;
1740         /* set a random serial number if one has not yet been specified */
1741         if(!option_values.has_serial_number) {
1742                 option_values.serial_number = rand();
1743                 option_values.has_serial_number = true;
1744         }
1745         common_options.serial_number = option_values.serial_number++;
1746 #endif
1747         common_options.lax = option_values.lax;
1748         common_options.do_mid_side = option_values.do_mid_side;
1749         common_options.loose_mid_side = option_values.loose_mid_side;
1750         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1751         common_options.do_escape_coding = option_values.do_escape_coding;
1752         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1753         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1754         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1755         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1756         common_options.apodizations = option_values.apodizations;
1757         common_options.max_lpc_order = option_values.max_lpc_order;
1758         common_options.blocksize = (unsigned)option_values.blocksize;
1759         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1760         common_options.padding = option_values.padding;
1761         common_options.requested_seek_points = option_values.requested_seek_points;
1762         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1763         common_options.cuesheet_filename = option_values.cuesheet_filename;
1764         common_options.cued_seekpoints = option_values.cued_seekpoints;
1765         common_options.is_first_file = is_first_file;
1766         common_options.is_last_file = is_last_file;
1767         common_options.align_reservoir = align_reservoir;
1768         common_options.align_reservoir_samples = &align_reservoir_samples;
1769         common_options.replay_gain = option_values.replay_gain;
1770         common_options.sector_align = option_values.sector_align;
1771         common_options.vorbis_comment = option_values.vorbis_comment;
1772         FLAC__ASSERT(sizeof(common_options.pictures) >= sizeof(option_values.pictures));
1773         memcpy(common_options.pictures, option_values.pictures, sizeof(option_values.pictures));
1774         common_options.num_pictures = option_values.num_pictures;
1775         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1776         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1777         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1778
1779         /* if infilename==outfilename, we need to write to a temporary file */
1780         if(encode_infile != stdin && 0 == strcmp(infilename, outfilename)) { /*@@@@@@ BUG strcmp is not adequate to check if infilename and outfilename are the same file */
1781                 static const char *tmp_suffix = ".tmp";
1782                 if(0 == (internal_outfilename = malloc(strlen(outfilename)+strlen(tmp_suffix)+1))) {
1783                         flac__utils_printf(stderr, 1, "ERROR allocating memory for tempfile name\n");
1784                         return 1;
1785                 }
1786                 strcpy(internal_outfilename, outfilename);
1787                 strcat(internal_outfilename, tmp_suffix);
1788         }
1789
1790         if(fmt == RAW) {
1791                 raw_encode_options_t options;
1792
1793                 options.common = common_options;
1794                 options.is_big_endian = option_values.format_is_big_endian;
1795                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1796                 options.channels = option_values.format_channels;
1797                 options.bps = option_values.format_bps;
1798                 options.sample_rate = option_values.format_sample_rate;
1799
1800                 retval = flac__encode_raw(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1801         }
1802         else if(fmt == FLAC) {
1803                 flac_encode_options_t options;
1804
1805                 options.common = common_options;
1806
1807                 retval = flac__encode_flac(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1808         }
1809         else {
1810                 wav_encode_options_t options;
1811
1812                 options.common = common_options;
1813
1814                 if(fmt == AIF)
1815                         retval = flac__encode_aif(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options, is_aifc);
1816                 else
1817                         retval = flac__encode_wav(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1818         }
1819
1820         if(retval == 0) {
1821                 if(strcmp(outfilename, "-")) {
1822                         if(option_values.replay_gain) {
1823                                 float title_gain, title_peak;
1824                                 const char *error;
1825                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1826                                 if(
1827                                         0 != (error = grabbag__replaygain_store_to_file_reference(internal_outfilename? internal_outfilename : outfilename, /*preserve_modtime=*/true)) ||
1828                                         0 != (error = grabbag__replaygain_store_to_file_title(internal_outfilename? internal_outfilename : outfilename, title_gain, title_peak, /*preserve_modtime=*/true))
1829                                 ) {
1830                                         flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain reference/title tags (%s)\n", outfilename, error);
1831                                 }
1832                         }
1833                         if(strcmp(infilename, "-"))
1834                                 grabbag__file_copy_metadata(infilename, internal_outfilename? internal_outfilename : outfilename);
1835                 }
1836         }
1837
1838         /* rename temporary file if necessary */
1839         if(retval == 0 && internal_outfilename != 0) {
1840                 if(rename(internal_outfilename, outfilename) < 0) {
1841 #if defined _MSC_VER || defined __MINGW32__ || defined __EMX__
1842                         /* on some flavors of windows, rename() will fail if the destination already exists, so we unlink and try again */
1843                         if(unlink(outfilename) < 0) {
1844                                 flac__utils_printf(stderr, 1, "ERROR: moving new FLAC file %s back on top of original FLAC file %s, keeping both\n", internal_outfilename, outfilename);
1845                                 retval = 1;
1846                         }
1847                         else if(rename(internal_outfilename, outfilename) < 0) {
1848                                 flac__utils_printf(stderr, 1, "ERROR: moving new FLAC file %s back on top of original FLAC file %s, you must do it\n", internal_outfilename, outfilename);
1849                                 retval = 1;
1850                         }
1851 #else
1852                         flac__utils_printf(stderr, 1, "ERROR: moving new FLAC file %s back on top of original FLAC file %s, keeping both\n", internal_outfilename, outfilename);
1853                         retval = 1;
1854 #endif
1855                 }
1856         }
1857
1858         /* handle --delete-input-file, but don't want to delete if piping from stdin, or if input filename and output filename are the same */
1859         if(retval == 0 && option_values.delete_input && strcmp(infilename, "-") && internal_outfilename == 0)
1860                 unlink(infilename);
1861
1862         if(internal_outfilename != 0)
1863                 free(internal_outfilename);
1864
1865         return retval;
1866 }
1867
1868 int decode_file(const char *infilename)
1869 {
1870         int retval;
1871         FLAC__bool treat_as_ogg = false;
1872         decode_options_t common_options;
1873         const char *outfilename = get_decoded_outfilename(infilename);
1874
1875         if(0 == outfilename) {
1876                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1877                 return 1;
1878         }
1879
1880         /*
1881          * Error if output file already exists (and -f not used).
1882          * Use grabbag__file_get_filesize() as a cheap way to check.
1883          */
1884         if(!option_values.test_only && !option_values.force_file_overwrite && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1885                 flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1886                 return 1;
1887         }
1888
1889         if(!option_values.test_only && !option_values.analyze) {
1890                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1891                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1892         }
1893
1894         if(option_values.use_ogg)
1895                 treat_as_ogg = true;
1896         else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".ogg"))
1897                 treat_as_ogg = true;
1898         else
1899                 treat_as_ogg = false;
1900
1901 #ifndef FLAC__HAS_OGG
1902         if(treat_as_ogg) {
1903                 flac__utils_printf(stderr, 1, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1904                 return 1;
1905         }
1906 #endif
1907
1908         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1909                 return usage_error("ERROR: invalid value for --skip\n");
1910
1911         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 */
1912                 return usage_error("ERROR: invalid value for --until\n");
1913         /* if there is no "--until" we want to default to "--until=-0" */
1914         if(0 == option_values.until_specification)
1915                 common_options.until_specification.is_relative = true;
1916
1917         if(option_values.cue_specification) {
1918                 if(!flac__utils_parse_cue_specification(option_values.cue_specification, &common_options.cue_specification))
1919                         return usage_error("ERROR: invalid value for --cue\n");
1920                 common_options.has_cue_specification = true;
1921         }
1922         else
1923                 common_options.has_cue_specification = false;
1924
1925         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1926         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1927 #ifdef FLAC__HAS_OGG
1928         common_options.is_ogg = treat_as_ogg;
1929         common_options.use_first_serial_number = !option_values.has_serial_number;
1930         common_options.serial_number = option_values.serial_number;
1931 #endif
1932
1933         if(!option_values.force_raw_format) {
1934                 wav_decode_options_t options;
1935
1936                 options.common = common_options;
1937
1938                 if(
1939                         option_values.force_aiff_format ||
1940                         (strlen(outfilename) >= 4 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-4), ".aif")) ||
1941                         (strlen(outfilename) >= 5 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-5), ".aiff"))
1942                 )
1943                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1944                 else
1945                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1946         }
1947         else {
1948                 raw_decode_options_t options;
1949
1950                 options.common = common_options;
1951                 options.is_big_endian = option_values.format_is_big_endian;
1952                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1953
1954                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1955         }
1956
1957         if(retval == 0 && strcmp(infilename, "-")) {
1958                 if(strcmp(outfilename, "-"))
1959                         grabbag__file_copy_metadata(infilename, outfilename);
1960                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1961                         unlink(infilename);
1962         }
1963
1964         return retval;
1965 }
1966
1967 const char *get_encoded_outfilename(const char *infilename)
1968 {
1969         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1970         return get_outfilename(infilename, suffix);
1971 }
1972
1973 const char *get_decoded_outfilename(const char *infilename)
1974 {
1975         const char *suffix;
1976         if(option_values.analyze) {
1977                 suffix = ".ana";
1978         }
1979         else if(option_values.force_raw_format) {
1980                 suffix = ".raw";
1981         }
1982         else if(option_values.force_aiff_format) {
1983                 suffix = ".aiff";
1984         }
1985         else {
1986                 suffix = ".wav";
1987         }
1988         return get_outfilename(infilename, suffix);
1989 }
1990
1991 const char *get_outfilename(const char *infilename, const char *suffix)
1992 {
1993         if(0 == option_values.cmdline_forced_outfilename) {
1994                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1995
1996                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1997                         strcpy(buffer, "-");
1998                 }
1999                 else {
2000                         char *p;
2001                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
2002                                 return 0;
2003                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
2004                                 return 0;
2005                         if(0 == (p = strrchr(buffer, '.'))) {
2006                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
2007                                         return 0;
2008                         }
2009                         else {
2010                                 *p = '\0';
2011                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
2012                                         return 0;
2013                         }
2014                 }
2015                 return buffer;
2016         }
2017         else
2018                 return option_values.cmdline_forced_outfilename;
2019 }
2020
2021 void die(const char *message)
2022 {
2023         FLAC__ASSERT(0 != message);
2024         flac__utils_printf(stderr, 1, "ERROR: %s\n", message);
2025         exit(1);
2026 }
2027
2028 char *local_strdup(const char *source)
2029 {
2030         char *ret;
2031         FLAC__ASSERT(0 != source);
2032         if(0 == (ret = strdup(source)))
2033                 die("out of memory during strdup()");
2034         return ret;
2035 }