minor cosmetics
[flac.git] / src / flac / main.c
1 /* flac - Command-line FLAC encoder/decoder
2  * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  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, OGGFLAC } FileFormat;
60
61 static int do_it(void);
62
63 static FLAC__bool init_options(void);
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(void);
67 static void add_compression_setting_bool(compression_setting_type_t type, FLAC__bool value);
68 static void add_compression_setting_string(compression_setting_type_t type, const char *value);
69 static void add_compression_setting_unsigned(compression_setting_type_t type, unsigned value);
70
71 static int usage_error(const char *message, ...);
72 static void short_usage(void);
73 static void show_version(void);
74 static void show_help(void);
75 static void show_explain(void);
76 static void format_mistake(const char *infilename, FileFormat wrong, FileFormat right);
77
78 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
79 static int decode_file(const char *infilename);
80
81 static const char *get_encoded_outfilename(const char *infilename);
82 static const char *get_decoded_outfilename(const char *infilename);
83 static const char *get_outfilename(const char *infilename, const char *suffix);
84
85 static void die(const char *message);
86 static int conditional_fclose(FILE *f);
87 static char *local_strdup(const char *source);
88 #ifdef _MSC_VER
89 /* There's no strtoll() in MSVC6 so we just write a specialized one */
90 static FLAC__int64 local__strtoll(const char *src, char **endptr);
91 #endif
92
93
94 /*
95  * share__getopt format struct; note that for long options with no
96  * short option equivalent we just set the 'val' field to 0.
97  */
98 static struct share__option long_options_[] = {
99         /*
100          * general options
101          */
102         { "help"              , share__no_argument, 0, 'h' },
103         { "explain"           , share__no_argument, 0, 'H' },
104         { "version"           , share__no_argument, 0, 'v' },
105         { "decode"            , share__no_argument, 0, 'd' },
106         { "analyze"           , share__no_argument, 0, 'a' },
107         { "test"              , share__no_argument, 0, 't' },
108         { "stdout"            , share__no_argument, 0, 'c' },
109         { "silent"            , share__no_argument, 0, 's' },
110         { "totally-silent"    , share__no_argument, 0, 0 },
111         { "warnings-as-errors", share__no_argument, 0, 'w' },
112         { "force"             , share__no_argument, 0, 'f' },
113         { "delete-input-file" , share__no_argument, 0, 0 },
114         { "output-prefix"     , share__required_argument, 0, 0 },
115         { "output-name"       , share__required_argument, 0, 'o' },
116         { "skip"              , share__required_argument, 0, 0 },
117         { "until"             , share__required_argument, 0, 0 },
118         { "channel-map"       , share__required_argument, 0, 0 }, /* undocumented */
119
120         /*
121          * decoding options
122          */
123         { "decode-through-errors", share__no_argument, 0, 'F' },
124         { "cue"                  , share__required_argument, 0, 0 },
125         { "apply-replaygain-which-is-not-lossless", share__optional_argument, 0, 0 }, /* undocumented */
126
127         /*
128          * encoding options
129          */
130         { "cuesheet"                  , share__required_argument, 0, 0 },
131         { "no-cued-seekpoints"        , share__no_argument, 0, 0 },
132         { "picture"                   , share__required_argument, 0, 0 },
133         { "tag"                       , share__required_argument, 0, 'T' },
134         { "tag-from-file"             , share__required_argument, 0, 0 },
135         { "compression-level-0"       , share__no_argument, 0, '0' },
136         { "compression-level-1"       , share__no_argument, 0, '1' },
137         { "compression-level-2"       , share__no_argument, 0, '2' },
138         { "compression-level-3"       , share__no_argument, 0, '3' },
139         { "compression-level-4"       , share__no_argument, 0, '4' },
140         { "compression-level-5"       , share__no_argument, 0, '5' },
141         { "compression-level-6"       , share__no_argument, 0, '6' },
142         { "compression-level-7"       , share__no_argument, 0, '7' },
143         { "compression-level-8"       , share__no_argument, 0, '8' },
144         { "compression-level-9"       , share__no_argument, 0, '9' },
145         { "best"                      , share__no_argument, 0, '8' },
146         { "fast"                      , share__no_argument, 0, '0' },
147         { "verify"                    , share__no_argument, 0, 'V' },
148         { "force-aiff-format"         , share__no_argument, 0, 0 },
149         { "force-raw-format"          , share__no_argument, 0, 0 },
150         { "lax"                       , share__no_argument, 0, 0 },
151         { "replay-gain"               , share__no_argument, 0, 0 },
152         { "sector-align"              , share__no_argument, 0, 0 },
153         { "seekpoint"                 , share__required_argument, 0, 'S' },
154         { "padding"                   , share__required_argument, 0, 'P' },
155 #if FLAC__HAS_OGG
156         { "ogg"                       , share__no_argument, 0, 0 },
157         { "serial-number"             , share__required_argument, 0, 0 },
158 #endif
159         { "blocksize"                 , share__required_argument, 0, 'b' },
160         { "exhaustive-model-search"   , share__no_argument, 0, 'e' },
161         { "max-lpc-order"             , share__required_argument, 0, 'l' },
162         { "apodization"               , share__required_argument, 0, 'A' },
163         { "mid-side"                  , share__no_argument, 0, 'm' },
164         { "adaptive-mid-side"         , share__no_argument, 0, 'M' },
165         { "qlp-coeff-precision-search", share__no_argument, 0, 'p' },
166         { "qlp-coeff-precision"       , share__required_argument, 0, 'q' },
167         { "rice-partition-order"      , share__required_argument, 0, 'r' },
168         { "endian"                    , share__required_argument, 0, 0 },
169         { "channels"                  , share__required_argument, 0, 0 },
170         { "bps"                       , share__required_argument, 0, 0 },
171         { "sample-rate"               , share__required_argument, 0, 0 },
172         { "sign"                      , share__required_argument, 0, 0 },
173         { "input-size"                , share__required_argument, 0, 0 },
174
175         /*
176          * analysis options
177          */
178         { "residual-gnuplot", share__no_argument, 0, 0 },
179         { "residual-text", share__no_argument, 0, 0 },
180
181         /*
182          * negatives
183          */
184         { "no-decode-through-errors"  , share__no_argument, 0, 0 },
185         { "no-silent"                 , share__no_argument, 0, 0 },
186         { "no-force"                  , share__no_argument, 0, 0 },
187         { "no-seektable"              , share__no_argument, 0, 0 },
188         { "no-delete-input-file"      , share__no_argument, 0, 0 },
189         { "no-replay-gain"            , share__no_argument, 0, 0 },
190         { "no-sector-align"           , share__no_argument, 0, 0 },
191         { "no-lax"                    , share__no_argument, 0, 0 },
192 #if FLAC__HAS_OGG
193         { "no-ogg"                    , share__no_argument, 0, 0 },
194 #endif
195         { "no-exhaustive-model-search", share__no_argument, 0, 0 },
196         { "no-mid-side"               , share__no_argument, 0, 0 },
197         { "no-adaptive-mid-side"      , share__no_argument, 0, 0 },
198         { "no-qlp-coeff-prec-search"  , share__no_argument, 0, 0 },
199         { "no-padding"                , share__no_argument, 0, 0 },
200         { "no-verify"                 , share__no_argument, 0, 0 },
201         { "no-warnings-as-errors"     , share__no_argument, 0, 0 },
202         { "no-residual-gnuplot"       , share__no_argument, 0, 0 },
203         { "no-residual-text"          , share__no_argument, 0, 0 },
204         /*
205          * undocumented debugging options for the test suite
206          */
207         { "disable-constant-subframes", share__no_argument, 0, 0 },
208         { "disable-fixed-subframes"   , share__no_argument, 0, 0 },
209         { "disable-verbatim-subframes", share__no_argument, 0, 0 },
210
211         {0, 0, 0, 0}
212 };
213
214
215 /*
216  * global to hold command-line option values
217  */
218
219 static struct {
220         FLAC__bool show_help;
221         FLAC__bool show_explain;
222         FLAC__bool show_version;
223         FLAC__bool mode_decode;
224         FLAC__bool verify;
225         FLAC__bool treat_warnings_as_errors;
226         FLAC__bool force_file_overwrite;
227         FLAC__bool continue_through_decode_errors;
228         replaygain_synthesis_spec_t replaygain_synthesis_spec;
229         FLAC__bool lax;
230         FLAC__bool test_only;
231         FLAC__bool analyze;
232         FLAC__bool use_ogg;
233         FLAC__bool has_serial_number; /* true iff --serial-number was used */
234         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
235         FLAC__bool force_to_stdout;
236         FLAC__bool force_aiff_format;
237         FLAC__bool force_raw_format;
238         FLAC__bool delete_input;
239         FLAC__bool replay_gain;
240         FLAC__bool sector_align;
241         const char *cmdline_forced_outfilename;
242         const char *output_prefix;
243         analysis_options aopts;
244         int padding; /* -1 => no -P options were given, 0 => -P- was given, else -P value */
245         size_t num_compression_settings;
246         compression_setting_t compression_settings[64]; /* bad MAGIC NUMBER but buffer overflow is checked */
247         const char *skip_specification;
248         const char *until_specification;
249         const char *cue_specification;
250         int format_is_big_endian;
251         int format_is_unsigned_samples;
252         int format_channels;
253         int format_bps;
254         int format_sample_rate;
255         off_t format_input_size;
256         char requested_seek_points[5000]; /* bad MAGIC NUMBER but buffer overflow is checked */
257         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
258         const char *cuesheet_filename;
259         FLAC__bool cued_seekpoints;
260         FLAC__bool channel_map_none; /* --channel-map=none specified, eventually will expand to take actual channel map */
261
262         unsigned num_files;
263         char **filenames;
264
265         FLAC__StreamMetadata *vorbis_comment;
266         FLAC__StreamMetadata *pictures[64];
267         unsigned num_pictures;
268
269         struct {
270                 FLAC__bool disable_constant_subframes;
271                 FLAC__bool disable_fixed_subframes;
272                 FLAC__bool disable_verbatim_subframes;
273         } debug;
274 } option_values;
275
276
277 /*
278  * miscellaneous globals
279  */
280
281 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
282 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
283 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
284
285
286 int main(int argc, char *argv[])
287 {
288         int retval = 0;
289
290 #ifdef __EMX__
291         _response(&argc, &argv);
292         _wildcard(&argc, &argv);
293 #endif
294
295         srand((unsigned)time(0));
296         setlocale(LC_ALL, "");
297         if(!init_options()) {
298                 flac__utils_printf(stderr, 1, "ERROR: allocating memory\n");
299                 retval = 1;
300         }
301         else {
302                 if((retval = parse_options(argc, argv)) == 0)
303                         retval = do_it();
304         }
305
306         free_options();
307
308         return retval;
309 }
310
311 int do_it(void)
312 {
313         int retval = 0;
314
315         if(option_values.show_version) {
316                 show_version();
317                 return 0;
318         }
319         else if(option_values.show_explain) {
320                 show_explain();
321                 return 0;
322         }
323         else if(option_values.show_help) {
324                 show_help();
325                 return 0;
326         }
327         else {
328                 if(option_values.num_files == 0) {
329                         if(flac__utils_verbosity_ >= 1)
330                                 short_usage();
331                         return 0;
332                 }
333
334                 /*
335                  * tweak options; validate the values
336                  */
337                 if(!option_values.mode_decode) {
338                         if(0 != option_values.cue_specification)
339                                 return usage_error("ERROR: --cue is not allowed in test mode\n");
340                 }
341                 else {
342                         if(option_values.test_only) {
343                                 if(0 != option_values.skip_specification)
344                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
345                                 if(0 != option_values.until_specification)
346                                         return usage_error("ERROR: --until is not allowed in test mode\n");
347                                 if(0 != option_values.cue_specification)
348                                         return usage_error("ERROR: --cue is not allowed in test mode\n");
349                                 if(0 != option_values.analyze)
350                                         return usage_error("ERROR: analysis mode (-a/--analyze) and test mode (-t/--test) cannot be used together\n");
351                         }
352                 }
353
354                 if(0 != option_values.cue_specification && (0 != option_values.skip_specification || 0 != option_values.until_specification))
355                         return usage_error("ERROR: --cue may not be combined with --skip or --until\n");
356
357                 if(option_values.format_channels >= 0) {
358                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
359                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
360                 }
361                 if(option_values.format_bps >= 0) {
362                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
363                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
364                 }
365                 if(option_values.format_sample_rate >= 0) {
366                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
367                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
368                 }
369                 if(option_values.force_raw_format && option_values.force_aiff_format)
370                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
371                 if(option_values.mode_decode) {
372                         if(!option_values.force_raw_format) {
373                                 if(option_values.format_is_big_endian >= 0)
374                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
375                                 if(option_values.format_is_unsigned_samples >= 0)
376                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
377                         }
378                         if(option_values.format_channels >= 0)
379                                 return usage_error("ERROR: --channels not allowed with --decode\n");
380                         if(option_values.format_bps >= 0)
381                                 return usage_error("ERROR: --bps not allowed with --decode\n");
382                         if(option_values.format_sample_rate >= 0)
383                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
384                 }
385
386                 if(option_values.sector_align) {
387                         if(option_values.mode_decode)
388                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
389                         if(0 != option_values.skip_specification)
390                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
391                         if(0 != option_values.until_specification)
392                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
393                         if(0 != option_values.cue_specification)
394                                 return usage_error("ERROR: --sector-align not allowed with --cue\n");
395                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
396                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
397                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
398                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
399                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
400                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
401                 }
402                 if(option_values.replay_gain) {
403                         if(option_values.force_to_stdout)
404                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
405                         if(option_values.mode_decode)
406                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
407                         if(option_values.format_channels > 2)
408                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
409                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
410                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
411                         /*
412                          * We want to reserve padding space for the ReplayGain
413                          * tags that we will set later, to avoid rewriting the
414                          * whole file.
415                          */
416                         if(option_values.padding <= 0) {
417                                 flac__utils_printf(stderr, 1, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
418                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
419                         }
420                         else {
421                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
422                         }
423                 }
424                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
425                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
426                 }
427                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
428                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
429                 }
430                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
431                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
432                 }
433         }
434
435         flac__utils_printf(stderr, 2, "\n");
436         flac__utils_printf(stderr, 2, "flac %s, Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson\n", FLAC__VERSION_STRING);
437         flac__utils_printf(stderr, 2, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
438         flac__utils_printf(stderr, 2, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
439
440         if(option_values.mode_decode) {
441                 FLAC__bool first = true;
442
443                 if(option_values.num_files == 0) {
444                         retval = decode_file("-");
445                 }
446                 else {
447                         unsigned i;
448                         if(option_values.num_files > 1)
449                                 option_values.cmdline_forced_outfilename = 0;
450                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
451                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
452                                         continue;
453                                 retval |= decode_file(option_values.filenames[i]);
454                                 first = false;
455                         }
456                 }
457         }
458         else { /* encode */
459                 FLAC__bool first = true;
460
461                 if(option_values.num_files == 0) {
462                         retval = encode_file("-", first, true);
463                 }
464                 else {
465                         unsigned i;
466                         if(option_values.num_files > 1)
467                                 option_values.cmdline_forced_outfilename = 0;
468                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
469                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
470                                         continue;
471                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
472                                 first = false;
473                         }
474                         if(option_values.replay_gain && retval == 0) {
475                                 float album_gain, album_peak;
476                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
477                                 for(i = 0; i < option_values.num_files; i++) {
478                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
479                                         if(0 == outfilename) {
480                                                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", option_values.filenames[i]);
481                                                 return 1;
482                                         }
483                                         if(0 == strcmp(option_values.filenames[i], "-")) {
484                                                 FLAC__ASSERT(0);
485                                                 /* double protection */
486                                                 flac__utils_printf(stderr, 1, "internal error\n");
487                                                 return 2;
488                                         }
489                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
490                                                 flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain album tags (%s)\n", outfilename, error);
491                                                 retval = 1;
492                                         }
493                                 }
494                         }
495                 }
496         }
497
498         return retval;
499 }
500
501 FLAC__bool init_options(void)
502 {
503         option_values.show_help = false;
504         option_values.show_explain = false;
505         option_values.mode_decode = false;
506         option_values.verify = false;
507         option_values.treat_warnings_as_errors = false;
508         option_values.force_file_overwrite = false;
509         option_values.continue_through_decode_errors = false;
510         option_values.replaygain_synthesis_spec.apply = false;
511         option_values.replaygain_synthesis_spec.use_album_gain = true;
512         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
513         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
514         option_values.replaygain_synthesis_spec.preamp = 0.0;
515         option_values.lax = false;
516         option_values.test_only = false;
517         option_values.analyze = false;
518         option_values.use_ogg = false;
519         option_values.has_serial_number = false;
520         option_values.serial_number = 0;
521         option_values.force_to_stdout = false;
522         option_values.force_aiff_format = false;
523         option_values.force_raw_format = false;
524         option_values.delete_input = false;
525         option_values.replay_gain = false;
526         option_values.sector_align = false;
527         option_values.cmdline_forced_outfilename = 0;
528         option_values.output_prefix = 0;
529         option_values.aopts.do_residual_text = false;
530         option_values.aopts.do_residual_gnuplot = false;
531         option_values.padding = -1;
532         option_values.num_compression_settings = 1;
533         option_values.compression_settings[0].type = CST_COMPRESSION_LEVEL;
534         option_values.compression_settings[0].value.t_unsigned = 5;
535         option_values.skip_specification = 0;
536         option_values.until_specification = 0;
537         option_values.cue_specification = 0;
538         option_values.format_is_big_endian = -1;
539         option_values.format_is_unsigned_samples = -1;
540         option_values.format_channels = -1;
541         option_values.format_bps = -1;
542         option_values.format_sample_rate = -1;
543         option_values.format_input_size = (off_t)(-1);
544         option_values.requested_seek_points[0] = '\0';
545         option_values.num_requested_seek_points = -1;
546         option_values.cuesheet_filename = 0;
547         option_values.cued_seekpoints = true;
548         option_values.channel_map_none = false;
549
550         option_values.num_files = 0;
551         option_values.filenames = 0;
552
553         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
554                 return false;
555         option_values.num_pictures = 0;
556
557         option_values.debug.disable_constant_subframes = false;
558         option_values.debug.disable_fixed_subframes = false;
559         option_values.debug.disable_verbatim_subframes = false;
560
561         return true;
562 }
563
564 int parse_options(int argc, char *argv[])
565 {
566         int short_option;
567         int option_index = 1;
568         FLAC__bool had_error = false;
569         const char *short_opts = "0123456789aA:b:cdefFhHl:mMo:pP:q:r:sS:tT:vVw";
570
571         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
572                 switch (short_option) {
573                         case 0: /* long option with no equivalent short option */
574                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
575                                 break;
576                         case '?':
577                         case ':':
578                                 had_error = true;
579                                 break;
580                         default: /* short option */
581                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
582                                 break;
583                 }
584         }
585
586         if(had_error) {
587                 return 1;
588         }
589
590         FLAC__ASSERT(share__optind <= argc);
591
592         option_values.num_files = argc - share__optind;
593
594         if(option_values.num_files > 0) {
595                 unsigned i = 0;
596                 if(0 == (option_values.filenames = (char**)malloc(sizeof(char*) * option_values.num_files)))
597                         die("out of memory allocating space for file names list");
598                 while(share__optind < argc)
599                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
600         }
601
602         return 0;
603 }
604
605 int parse_option(int short_option, const char *long_option, const char *option_argument)
606 {
607         const char *violation;
608         char *p;
609         int i;
610
611         if(short_option == 0) {
612                 FLAC__ASSERT(0 != long_option);
613                 if(0 == strcmp(long_option, "totally-silent")) {
614                         flac__utils_verbosity_ = 0;
615                 }
616                 else if(0 == strcmp(long_option, "delete-input-file")) {
617                         option_values.delete_input = true;
618                 }
619                 else if(0 == strcmp(long_option, "output-prefix")) {
620                         FLAC__ASSERT(0 != option_argument);
621                         option_values.output_prefix = option_argument;
622                 }
623                 else if(0 == strcmp(long_option, "skip")) {
624                         FLAC__ASSERT(0 != option_argument);
625                         option_values.skip_specification = option_argument;
626                 }
627                 else if(0 == strcmp(long_option, "until")) {
628                         FLAC__ASSERT(0 != option_argument);
629                         option_values.until_specification = option_argument;
630                 }
631                 else if(0 == strcmp(long_option, "input-size")) {
632                         FLAC__ASSERT(0 != option_argument);
633                         {
634                                 char *end;
635 #ifdef _MSC_VER
636                                 FLAC__int64 i;
637                                 i = local__strtoll(option_argument, &end);
638 #else
639                                 long long i;
640                                 i = strtoll(option_argument, &end, 10);
641 #endif
642                                 if(0 == strlen(option_argument) || *end)
643                                         return usage_error("ERROR: --%s must be a number\n", long_option);
644                                 option_values.format_input_size = (off_t)i;
645                                 if(option_values.format_input_size != i) /* check if off_t is smaller than long long */
646                                         return usage_error("ERROR: --%s too large; this build of flac does not support filesizes over 2GB\n", long_option);
647                                 if(option_values.format_input_size <= 0)
648                                         return usage_error("ERROR: --%s must be > 0\n", long_option);
649                         }
650                 }
651                 else if(0 == strcmp(long_option, "cue")) {
652                         FLAC__ASSERT(0 != option_argument);
653                         option_values.cue_specification = option_argument;
654                 }
655                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
656                         option_values.replaygain_synthesis_spec.apply = true;
657                         if (0 != option_argument) {
658                                 char *p;
659                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
660                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
661                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
662                                 for ( ; *p; p++) {
663                                         if (*p == 'a')
664                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
665                                         else if (*p == 't')
666                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
667                                         else if (*p == 'l')
668                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
669                                         else if (*p == 'L')
670                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
671                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
672                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
673                                                 p++;
674                                         }
675                                         else
676                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
677                                 }
678                         }
679                 }
680                 else if(0 == strcmp(long_option, "channel-map")) {
681                         if (0 == option_argument || strcmp(option_argument, "none"))
682                                 return usage_error("ERROR: only --channel-map=none currently supported\n");
683                         option_values.channel_map_none = true;
684                 }
685                 else if(0 == strcmp(long_option, "cuesheet")) {
686                         FLAC__ASSERT(0 != option_argument);
687                         option_values.cuesheet_filename = option_argument;
688                 }
689                 else if(0 == strcmp(long_option, "picture")) {
690                         const unsigned max_pictures = sizeof(option_values.pictures)/sizeof(option_values.pictures[0]);
691                         FLAC__ASSERT(0 != option_argument);
692                         if(option_values.num_pictures >= max_pictures)
693                                 return usage_error("ERROR: too many --picture arguments, only %u allowed\n", max_pictures);
694                         if(0 == (option_values.pictures[option_values.num_pictures] = grabbag__picture_parse_specification(option_argument, &violation)))
695                                 return usage_error("ERROR: (--picture) %s\n", violation);
696                         option_values.num_pictures++;
697                 }
698                 else if(0 == strcmp(long_option, "tag-from-file")) {
699                         FLAC__ASSERT(0 != option_argument);
700                         if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/true, &violation))
701                                 return usage_error("ERROR: (--tag-from-file) %s\n", violation);
702                 }
703                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
704                         option_values.cued_seekpoints = false;
705                 }
706                 else if(0 == strcmp(long_option, "force-aiff-format")) {
707                         option_values.force_aiff_format = true;
708                 }
709                 else if(0 == strcmp(long_option, "force-raw-format")) {
710                         option_values.force_raw_format = true;
711                 }
712                 else if(0 == strcmp(long_option, "lax")) {
713                         option_values.lax = true;
714                 }
715                 else if(0 == strcmp(long_option, "replay-gain")) {
716                         option_values.replay_gain = true;
717                 }
718                 else if(0 == strcmp(long_option, "sector-align")) {
719                         option_values.sector_align = true;
720                 }
721 #if FLAC__HAS_OGG
722                 else if(0 == strcmp(long_option, "ogg")) {
723                         option_values.use_ogg = true;
724                 }
725                 else if(0 == strcmp(long_option, "serial-number")) {
726                         option_values.has_serial_number = true;
727                         option_values.serial_number = atol(option_argument);
728                 }
729 #endif
730                 else if(0 == strcmp(long_option, "endian")) {
731                         FLAC__ASSERT(0 != option_argument);
732                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
733                                 option_values.format_is_big_endian = true;
734                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
735                                 option_values.format_is_big_endian = false;
736                         else
737                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
738                 }
739                 else if(0 == strcmp(long_option, "channels")) {
740                         FLAC__ASSERT(0 != option_argument);
741                         option_values.format_channels = atoi(option_argument);
742                 }
743                 else if(0 == strcmp(long_option, "bps")) {
744                         FLAC__ASSERT(0 != option_argument);
745                         option_values.format_bps = atoi(option_argument);
746                 }
747                 else if(0 == strcmp(long_option, "sample-rate")) {
748                         FLAC__ASSERT(0 != option_argument);
749                         option_values.format_sample_rate = atoi(option_argument);
750                 }
751                 else if(0 == strcmp(long_option, "sign")) {
752                         FLAC__ASSERT(0 != option_argument);
753                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
754                                 option_values.format_is_unsigned_samples = false;
755                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
756                                 option_values.format_is_unsigned_samples = true;
757                         else
758                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
759                 }
760                 else if(0 == strcmp(long_option, "residual-gnuplot")) {
761                         option_values.aopts.do_residual_gnuplot = true;
762                 }
763                 else if(0 == strcmp(long_option, "residual-text")) {
764                         option_values.aopts.do_residual_text = true;
765                 }
766                 /*
767                  * negatives
768                  */
769                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
770                         option_values.continue_through_decode_errors = false;
771                 }
772                 else if(0 == strcmp(long_option, "no-silent")) {
773                         flac__utils_verbosity_ = 2;
774                 }
775                 else if(0 == strcmp(long_option, "no-force")) {
776                         option_values.force_file_overwrite = false;
777                 }
778                 else if(0 == strcmp(long_option, "no-seektable")) {
779                         option_values.num_requested_seek_points = 0;
780                         option_values.requested_seek_points[0] = '\0';
781                 }
782                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
783                         option_values.delete_input = false;
784                 }
785                 else if(0 == strcmp(long_option, "no-replay-gain")) {
786                         option_values.replay_gain = false;
787                 }
788                 else if(0 == strcmp(long_option, "no-sector-align")) {
789                         option_values.sector_align = false;
790                 }
791                 else if(0 == strcmp(long_option, "no-lax")) {
792                         option_values.lax = false;
793                 }
794 #if FLAC__HAS_OGG
795                 else if(0 == strcmp(long_option, "no-ogg")) {
796                         option_values.use_ogg = false;
797                 }
798 #endif
799                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
800                         add_compression_setting_bool(CST_DO_EXHAUSTIVE_MODEL_SEARCH, false);
801                 }
802                 else if(0 == strcmp(long_option, "no-mid-side")) {
803                         add_compression_setting_bool(CST_DO_MID_SIDE, false);
804                         add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
805                 }
806                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
807                         add_compression_setting_bool(CST_DO_MID_SIDE, false);
808                         add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
809                 }
810                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
811                         add_compression_setting_bool(CST_DO_QLP_COEFF_PREC_SEARCH, false);
812                 }
813                 else if(0 == strcmp(long_option, "no-padding")) {
814                         option_values.padding = 0;
815                 }
816                 else if(0 == strcmp(long_option, "no-verify")) {
817                         option_values.verify = false;
818                 }
819                 else if(0 == strcmp(long_option, "no-warnings-as-errors")) {
820                         option_values.treat_warnings_as_errors = false;
821                 }
822                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
823                         option_values.aopts.do_residual_gnuplot = false;
824                 }
825                 else if(0 == strcmp(long_option, "no-residual-text")) {
826                         option_values.aopts.do_residual_text = false;
827                 }
828                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
829                         option_values.debug.disable_constant_subframes = true;
830                 }
831                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
832                         option_values.debug.disable_fixed_subframes = true;
833                 }
834                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
835                         option_values.debug.disable_verbatim_subframes = true;
836                 }
837         }
838         else {
839                 switch(short_option) {
840                         case 'h':
841                                 option_values.show_help = true;
842                                 break;
843                         case 'H':
844                                 option_values.show_explain = true;
845                                 break;
846                         case 'v':
847                                 option_values.show_version = true;
848                                 break;
849                         case 'd':
850                                 option_values.mode_decode = true;
851                                 break;
852                         case 'a':
853                                 option_values.mode_decode = true;
854                                 option_values.analyze = true;
855                                 break;
856                         case 't':
857                                 option_values.mode_decode = true;
858                                 option_values.test_only = true;
859                                 break;
860                         case 'c':
861                                 option_values.force_to_stdout = true;
862                                 break;
863                         case 's':
864                                 flac__utils_verbosity_ = 1;
865                                 break;
866                         case 'f':
867                                 option_values.force_file_overwrite = true;
868                                 break;
869                         case 'o':
870                                 FLAC__ASSERT(0 != option_argument);
871                                 option_values.cmdline_forced_outfilename = option_argument;
872                                 break;
873                         case 'F':
874                                 option_values.continue_through_decode_errors = true;
875                                 break;
876                         case 'T':
877                                 FLAC__ASSERT(0 != option_argument);
878                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/false, &violation))
879                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
880                                 break;
881                         case '0':
882                         case '1':
883                         case '2':
884                         case '3':
885                         case '4':
886                         case '5':
887                         case '6':
888                         case '7':
889                         case '8':
890                                 add_compression_setting_unsigned(CST_COMPRESSION_LEVEL, short_option-'0');
891                                 break;
892                         case '9':
893                                 return usage_error("ERROR: compression level '9' is reserved\n");
894                         case 'V':
895                                 option_values.verify = true;
896                                 break;
897                         case 'w':
898                                 option_values.treat_warnings_as_errors = true;
899                                 break;
900                         case 'S':
901                                 FLAC__ASSERT(0 != option_argument);
902                                 if(0 == strcmp(option_argument, "-")) {
903                                         option_values.num_requested_seek_points = 0;
904                                         option_values.requested_seek_points[0] = '\0';
905                                 }
906                                 else {
907                                         if(option_values.num_requested_seek_points < 0)
908                                                 option_values.num_requested_seek_points = 0;
909                                         option_values.num_requested_seek_points++;
910                                         if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
911                                                 return usage_error("ERROR: too many seekpoints requested\n");
912                                         }
913                                         else {
914                                                 strcat(option_values.requested_seek_points, option_argument);
915                                                 strcat(option_values.requested_seek_points, ";");
916                                         }
917                                 }
918                                 break;
919                         case 'P':
920                                 FLAC__ASSERT(0 != option_argument);
921                                 option_values.padding = atoi(option_argument);
922                                 if(option_values.padding < 0)
923                                         return usage_error("ERROR: argument to -%c must be >= 0; for no padding use -%c-\n", short_option, short_option);
924                                 break;
925                         case 'b':
926                                 FLAC__ASSERT(0 != option_argument);
927                                 i = atoi(option_argument);
928                                 if((i < (int)FLAC__MIN_BLOCK_SIZE || i > (int)FLAC__MAX_BLOCK_SIZE))
929                                         return usage_error("ERROR: invalid blocksize (-%c) '%d', must be >= %u and <= %u\n", short_option, i, FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE);
930                                 add_compression_setting_unsigned(CST_BLOCKSIZE, (unsigned)i);
931                                 break;
932                         case 'e':
933                                 add_compression_setting_bool(CST_DO_EXHAUSTIVE_MODEL_SEARCH, true);
934                                 break;
935                         case 'E':
936                                 add_compression_setting_bool(CST_DO_ESCAPE_CODING, true);
937                                 break;
938                         case 'l':
939                                 FLAC__ASSERT(0 != option_argument);
940                                 i = atoi(option_argument);
941                                 if((i < 0 || i > (int)FLAC__MAX_LPC_ORDER))
942                                         return usage_error("ERROR: invalid LPC order (-%c) '%d', must be >= %u and <= %u\n", short_option, i, 0, FLAC__MAX_LPC_ORDER);
943                                 add_compression_setting_unsigned(CST_MAX_LPC_ORDER, (unsigned)i);
944                                 break;
945                         case 'A':
946                                 FLAC__ASSERT(0 != option_argument);
947                                 add_compression_setting_string(CST_APODIZATION, option_argument);
948                                 break;
949                         case 'm':
950                                 add_compression_setting_bool(CST_DO_MID_SIDE, true);
951                                 add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
952                                 break;
953                         case 'M':
954                                 add_compression_setting_bool(CST_DO_MID_SIDE, true);
955                                 add_compression_setting_bool(CST_LOOSE_MID_SIDE, true);
956                                 break;
957                         case 'p':
958                                 add_compression_setting_bool(CST_DO_QLP_COEFF_PREC_SEARCH, true);
959                                 break;
960                         case 'q':
961                                 FLAC__ASSERT(0 != option_argument);
962                                 i = atoi(option_argument);
963                                 if(i < 0 || (i > 0 && (i < (int)FLAC__MIN_QLP_COEFF_PRECISION || i > (int)FLAC__MAX_QLP_COEFF_PRECISION)))
964                                         return usage_error("ERROR: invalid value '%d' for qlp coeff precision (-%c), must be 0 or between %u and %u, inclusive\n", i, short_option, FLAC__MIN_QLP_COEFF_PRECISION, FLAC__MAX_QLP_COEFF_PRECISION);
965                                 add_compression_setting_unsigned(CST_QLP_COEFF_PRECISION, (unsigned)i);
966                                 break;
967                         case 'r':
968                                 FLAC__ASSERT(0 != option_argument);
969                                 p = strchr(option_argument, ',');
970                                 if(0 == p) {
971                                         add_compression_setting_unsigned(CST_MIN_RESIDUAL_PARTITION_ORDER, 0);
972                                         i = atoi(option_argument);
973                                         if(i < 0)
974                                                 return usage_error("ERROR: invalid value '%d' for residual partition order (-%c), must be between 0 and %u, inclusive\n", i, short_option, FLAC__MAX_RICE_PARTITION_ORDER);
975                                         add_compression_setting_unsigned(CST_MAX_RESIDUAL_PARTITION_ORDER, (unsigned)i);
976                                 }
977                                 else {
978                                         i = atoi(option_argument);
979                                         if(i < 0)
980                                                 return usage_error("ERROR: invalid value '%d' for min residual partition order (-%c), must be between 0 and %u, inclusive\n", i, short_option, FLAC__MAX_RICE_PARTITION_ORDER);
981                                         add_compression_setting_unsigned(CST_MIN_RESIDUAL_PARTITION_ORDER, (unsigned)i);
982                                         i = atoi(++p);
983                                         if(i < 0)
984                                                 return usage_error("ERROR: invalid value '%d' for max residual partition order (-%c), must be between 0 and %u, inclusive\n", i, short_option, FLAC__MAX_RICE_PARTITION_ORDER);
985                                         add_compression_setting_unsigned(CST_MAX_RESIDUAL_PARTITION_ORDER, (unsigned)i);
986                                 }
987                                 break;
988                         case 'R':
989                                 i = atoi(option_argument);
990                                 if(i < 0)
991                                         return usage_error("ERROR: invalid value '%d' for Rice parameter search distance (-%c), must be >= 0\n", i, short_option);
992                                 add_compression_setting_unsigned(CST_RICE_PARAMETER_SEARCH_DIST, (unsigned)i);
993                                 break;
994                         default:
995                                 FLAC__ASSERT(0);
996                 }
997         }
998
999         return 0;
1000 }
1001
1002 void free_options(void)
1003 {
1004         unsigned i;
1005         if(0 != option_values.filenames) {
1006                 for(i = 0; i < option_values.num_files; i++) {
1007                         if(0 != option_values.filenames[i])
1008                                 free(option_values.filenames[i]);
1009                 }
1010                 free(option_values.filenames);
1011         }
1012         if(0 != option_values.vorbis_comment)
1013                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1014         for(i = 0; i < option_values.num_pictures; i++)
1015                 FLAC__metadata_object_delete(option_values.pictures[i]);
1016 }
1017
1018 void add_compression_setting_bool(compression_setting_type_t type, FLAC__bool value)
1019 {
1020         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1021                 die("too many compression settings");
1022         option_values.compression_settings[option_values.num_compression_settings].type = type;
1023         option_values.compression_settings[option_values.num_compression_settings].value.t_bool = value;
1024         option_values.num_compression_settings++;
1025 }
1026
1027 void add_compression_setting_string(compression_setting_type_t type, const char *value)
1028 {
1029         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1030                 die("too many compression settings");
1031         option_values.compression_settings[option_values.num_compression_settings].type = type;
1032         option_values.compression_settings[option_values.num_compression_settings].value.t_string = value;
1033         option_values.num_compression_settings++;
1034 }
1035
1036 void add_compression_setting_unsigned(compression_setting_type_t type, unsigned value)
1037 {
1038         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1039                 die("too many compression settings");
1040         option_values.compression_settings[option_values.num_compression_settings].type = type;
1041         option_values.compression_settings[option_values.num_compression_settings].value.t_unsigned = value;
1042         option_values.num_compression_settings++;
1043 }
1044
1045 int usage_error(const char *message, ...)
1046 {
1047         if(flac__utils_verbosity_ >= 1) {
1048                 va_list args;
1049
1050                 FLAC__ASSERT(0 != message);
1051
1052                 va_start(args, message);
1053
1054                 (void) vfprintf(stderr, message, args);
1055
1056                 va_end(args);
1057
1058                 printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1059         }
1060
1061         return 1;
1062 }
1063
1064 void show_version(void)
1065 {
1066         printf("flac %s\n", FLAC__VERSION_STRING);
1067 }
1068
1069 static void usage_header(void)
1070 {
1071         printf("===============================================================================\n");
1072         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1073         printf("Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson\n");
1074         printf("\n");
1075         printf("This program is free software; you can redistribute it and/or\n");
1076         printf("modify it under the terms of the GNU General Public License\n");
1077         printf("as published by the Free Software Foundation; either version 2\n");
1078         printf("of the License, or (at your option) any later version.\n");
1079         printf("\n");
1080         printf("This program is distributed in the hope that it will be useful,\n");
1081         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1082         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1083         printf("GNU General Public License for more details.\n");
1084         printf("\n");
1085         printf("You should have received a copy of the GNU General Public License\n");
1086         printf("along with this program; if not, write to the Free Software\n");
1087         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1088         printf("===============================================================================\n");
1089 }
1090
1091 static void usage_summary(void)
1092 {
1093         printf("Usage:\n");
1094         printf("\n");
1095         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1096         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1097         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1098         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1099         printf("\n");
1100 }
1101
1102 void short_usage(void)
1103 {
1104         usage_header();
1105         printf("\n");
1106         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1107         printf("instructions use 'flac --explain'\n");
1108         printf("\n");
1109         printf("To encode:\n");
1110         printf("  flac [-#] [INPUTFILE [...]]\n");
1111         printf("\n");
1112         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1113         printf("\n");
1114         printf("To decode:\n");
1115         printf("  flac -d [INPUTFILE [...]]\n");
1116         printf("\n");
1117         printf("To test:\n");
1118         printf("  flac -t [INPUTFILE [...]]\n");
1119 }
1120
1121 void show_help(void)
1122 {
1123         usage_header();
1124         usage_summary();
1125         printf("general options:\n");
1126         printf("  -v, --version                Show the flac version number\n");
1127         printf("  -h, --help                   Show this screen\n");
1128         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1129         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1130         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1131         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1132         printf("  -c, --stdout                 Write output to stdout\n");
1133         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1134         printf("      --totally-silent         Do not print anything, including errors\n");
1135         printf("  -w, --warnings-as-errors     Treat all warnings as errors\n");
1136         printf("  -f, --force                  Force overwriting of output files\n");
1137         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1138         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1139         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1140         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1141         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1142 #if FLAC__HAS_OGG
1143         printf("      --ogg                    Use Ogg as transport layer\n");
1144         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1145 #endif
1146         printf("analysis options:\n");
1147         printf("      --residual-text          Include residual signal in text output\n");
1148         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1149         printf("decoding options:\n");
1150         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1151         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to decode\n");
1152         printf("encoding options:\n");
1153         printf("  -V, --verify                 Verify a correct encoding\n");
1154         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1155         printf("      --sector-align           Align multiple files on sector boundaries\n");
1156         printf("      --replay-gain            Calculate ReplayGain & store in FLAC tags\n");
1157         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1158         printf("      --picture=SPECIFICATION  Import picture and store in PICTURE block\n");
1159         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag; may appear multiple times\n");
1160         printf("      --tag-from-file=FIELD=FILENAME   Like --tag but gets value from file\n");
1161         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1162         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1163         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 3\n");
1164         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 3\n");
1165         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1166         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4096 -r 4\n");
1167         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4096 -M -r 4\n");
1168         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4096 -m -r 5\n");
1169         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4096 -m -r 6\n");
1170         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4096 -m -e -r 6\n");
1171         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4096 -m -e -r 6\n");
1172         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1173         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1174         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1175         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1176         printf("  -A, --apodization=\"function\"       Window audio data with given the function\n");
1177         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1178         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1179         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1180         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1181         printf("format options:\n");
1182         printf("      --endian={big|little}    Set byte order for samples\n");
1183         printf("      --channels=#             Number of channels\n");
1184         printf("      --bps=#                  Number of bits per sample\n");
1185         printf("      --sample-rate=#          Sample rate in Hz\n");
1186         printf("      --sign={signed|unsigned} Sign of samples\n");
1187         printf("      --input-size=#           Size of the raw input in bytes\n");
1188         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1189         printf("      --force-raw-format       Treat input or output as raw samples\n");
1190         printf("negative options:\n");
1191         printf("      --no-adaptive-mid-side\n");
1192         printf("      --no-decode-through-errors\n");
1193         printf("      --no-delete-input-file\n");
1194         printf("      --no-exhaustive-model-search\n");
1195         printf("      --no-lax\n");
1196         printf("      --no-mid-side\n");
1197 #if FLAC__HAS_OGG
1198         printf("      --no-ogg\n");
1199 #endif
1200         printf("      --no-padding\n");
1201         printf("      --no-qlp-coeff-prec-search\n");
1202         printf("      --no-replay-gain\n");
1203         printf("      --no-residual-gnuplot\n");
1204         printf("      --no-residual-text\n");
1205         printf("      --no-sector-align\n");
1206         printf("      --no-seektable\n");
1207         printf("      --no-silent\n");
1208         printf("      --no-force\n");
1209         printf("      --no-verify\n");
1210         printf("      --no-warnings-as-errors\n");
1211 }
1212
1213 void show_explain(void)
1214 {
1215         usage_header();
1216         usage_summary();
1217         printf("For encoding:\n");
1218         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF (or uncompressed AIFF-C)\n");
1219         printf("  file, or raw samples.\n");
1220         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1221         printf("For decoding, the reverse is true.\n");
1222         printf("\n");
1223         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1224         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1225         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1226         printf("instead of:\n");
1227         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1228         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1229         printf("WAVE/AIFF header contents when necessary.\n");
1230         printf("\n");
1231         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1232         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1233         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1234         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1235         printf("files using -fr.\n");
1236         printf("\n");
1237         printf("general options:\n");
1238         printf("  -v, --version                Show the flac version number\n");
1239         printf("  -h, --help                   Show basic usage a list of all options\n");
1240         printf("  -H, --explain                Show this screen\n");
1241         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1242         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1243         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1244         printf("  -c, --stdout                 Write output to stdout\n");
1245         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1246         printf("      --totally-silent         Do not print anything of any kind, including\n");
1247         printf("                               warnings or errors.  The exit code will be the\n");
1248         printf("                               only way to determine successful completion.\n");
1249         printf("  -w, --warnings-as-errors     Treat all warnings as errors\n");
1250         printf("  -f, --force                  Force overwriting of output files\n");
1251         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1252         printf("                               changes the extension.  May only be used when\n");
1253         printf("                               encoding a single file.  May not be used in\n");
1254         printf("                               conjunction with --output-prefix.\n");
1255         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1256         printf("                               STRING.  This can be useful for encoding or\n");
1257         printf("                               decoding files to a different directory.  Make\n");
1258         printf("                               sure if your STRING is a path name that it ends\n");
1259         printf("                               with a '/' slash.\n");
1260         printf("      --delete-input-file      Automatically delete the input file after a\n");
1261         printf("                               successful encode or decode.  If there was an\n");
1262         printf("                               error (including a verify error) the input file\n");
1263         printf("                               is left intact.\n");
1264         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1265         printf("                               be used both for encoding and decoding.  The\n");
1266         printf("                               alternative form mm:ss.ss can be used to specify\n");
1267         printf("                               minutes, seconds, and fractions of a second.\n");
1268         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1269         printf("                               file.  The given sample number is not included\n");
1270         printf("                               in the decoded output.  The alternative form\n");
1271         printf("                               mm:ss.ss can be used to specify minutes,\n");
1272         printf("                               seconds, and fractions of a second.  If a `+'\n");
1273         printf("                               sign is at the beginning, the --until point is\n");
1274         printf("                               relative to the --skip point.  If a `-' sign is\n");
1275         printf("                               at the beginning, the --until point is relative\n");
1276         printf("                               to end of the audio.\n");
1277 #if FLAC__HAS_OGG
1278         printf("      --ogg                    When encoding, generate Ogg FLAC output instead\n");
1279         printf("                               of native FLAC.  Ogg FLAC streams are FLAC\n");
1280         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1281         printf("                               resulting file should have an '.ogg' extension\n");
1282         printf("                               and will still be decodable by flac.  When\n");
1283         printf("                               decoding, force the input to be treated as\n");
1284         printf("                               Ogg FLAC.  This is useful when piping input\n");
1285         printf("                               from stdin or when the filename does not end in\n");
1286         printf("                               '.ogg'.\n");
1287         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1288         printf("                               encoding and no serial number is given, flac\n");
1289         printf("                               uses a random one.  If encoding to multiple files\n");
1290         printf("                               the serial number is incremented for each file.\n");
1291         printf("                               When decoding and no number is given, flac uses\n");
1292         printf("                               the serial number of the first page.\n");
1293 #endif
1294         printf("analysis options:\n");
1295         printf("      --residual-text          Include residual signal in text output.  This\n");
1296         printf("                               will make the file very big, much larger than\n");
1297         printf("                               even the decoded file.\n");
1298         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1299         printf("                               of each subframe\n");
1300         printf("decoding options:\n");
1301         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1302         printf("                               and removes the partially decoded file if it\n");
1303         printf("                               encounters a bitstream error.  With -F, errors\n");
1304         printf("                               are still printed but flac will continue\n");
1305         printf("                               decoding to completion.  Note that errors may\n");
1306         printf("                               cause the decoded audio to be missing some\n");
1307         printf("                               samples or have silent sections.\n");
1308         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to\n");
1309         printf("                               decode.  The optional first #.# is the track and\n");
1310         printf("                               index point at which decoding will start; the\n");
1311         printf("                               default is the beginning of the stream.  The\n");
1312         printf("                               optional second #.# is the track and index point\n");
1313         printf("                               at which decoding will end; the default is the\n");
1314         printf("                               end of the stream.  If the cuepoint does not\n");
1315         printf("                               exist, the closest one before it (for the start\n");
1316         printf("                               point) or after it (for the end point) will be\n");
1317         printf("                               used.  The cuepoints are merely translated into\n");
1318         printf("                               sample numbers then used as --skip and --until.\n");
1319         printf("                               A CD track can always be cued by, for example,\n");
1320         printf("                               --cue=9.1-10.1 for track 9, even if the CD has\n");
1321         printf("                               no 10th track.\n");
1322         printf("encoding options:\n");
1323         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1324         printf("                               output in parallel and comparing to the\n");
1325         printf("                               original\n");
1326         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1327         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1328         printf("                               on sector boundaries.\n");
1329         printf("      --replay-gain            Calculate ReplayGain values and store them as\n");
1330         printf("                               FLAC tags.  Title gains/peaks will be computed\n");
1331         printf("                               for each file, and an album gain/peak will be\n");
1332         printf("                               computed for all files.  All input files must\n");
1333         printf("                               have the same resolution, sample rate, and\n");
1334         printf("                               number of channels.  The sample rate must be\n");
1335         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1336         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1337         printf("                               few extra bytes in the PADDING block.\n");
1338         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1339         printf("                               a CUESHEET metadata block.  This option may only\n");
1340         printf("                               be used when encoding a single file.  A\n");
1341         printf("                               seekpoint will be added for each index point in\n");
1342         printf("                               the cuesheet to the SEEKTABLE unless\n");
1343         printf("                               --no-cued-seekpoints is specified.\n");
1344         printf("      --picture=SPECIFICATION  Import a picture and store it in a PICTURE block.\n");
1345         printf("                               More than one --picture command can be specified.\n");
1346         printf("                               The SPECIFICATION can either be a simple filename\n");
1347         printf("                               for the picture file, or a complete specification\n");
1348         printf("                               whose parts are separated by | characters.  Some\n");
1349         printf("                               parts may be left empty to invoke default values.\n");
1350         printf("                               Using a filename is shorthand for \"||||FILE\".\n");
1351         printf("                               The SPECIFICATION format is:\n");
1352         printf("         [TYPE]|[MIME-TYPE]|[DESCRIPTION]|[WIDTHxHEIGHTxDEPTH[/COLORS]]|FILE\n");
1353         printf("           TYPE is optional; it is a number from one of:\n");
1354         printf("              0: Other\n");
1355         printf("              1: 32x32 pixels 'file icon' (PNG only)\n");
1356         printf("              2: Other file icon\n");
1357         printf("              3: Cover (front)\n");
1358         printf("              4: Cover (back)\n");
1359         printf("              5: Leaflet page\n");
1360         printf("              6: Media (e.g. label side of CD)\n");
1361         printf("              7: Lead artist/lead performer/soloist\n");
1362         printf("              8: Artist/performer\n");
1363         printf("              9: Conductor\n");
1364         printf("             10: Band/Orchestra\n");
1365         printf("             11: Composer\n");
1366         printf("             12: Lyricist/text writer\n");
1367         printf("             13: Recording Location\n");
1368         printf("             14: During recording\n");
1369         printf("             15: During performance\n");
1370         printf("             16: Movie/video screen capture\n");
1371         printf("             17: A bright coloured fish\n");
1372         printf("             18: Illustration\n");
1373         printf("             19: Band/artist logotype\n");
1374         printf("             20: Publisher/Studio logotype\n");
1375         printf("             The default is 3 (front cover).  There may only be one picture each\n");
1376         printf("             of type 1 and 2 in a file.\n");
1377         printf("           MIME-TYPE is optional; if left blank, it will be detected from the\n");
1378         printf("             file.  For best compatibility with players, use pictures with MIME\n");
1379         printf("             type image/jpeg or image/png.  The MIME type can also be --> to\n");
1380         printf("             mean that FILE is actually a URL to an image, though this use is\n");
1381         printf("             discouraged.\n");
1382         printf("           DESCRIPTION is optional; the default is an empty string\n");
1383         printf("           The next part specfies the resolution and color information.  If\n");
1384         printf("             the MIME-TYPE is image/jpeg, image/png, or image/gif, you can\n");
1385         printf("             usually leave this empty and they can be detected from the file.\n");
1386         printf("             Otherwise, you must specify the width in pixels, height in pixels,\n");
1387         printf("             and color depth in bits-per-pixel.  If the image has indexed colors\n");
1388         printf("             you should also specify the number of colors used.\n");
1389         printf("           FILE is the path to the picture file to be imported, or the URL if\n");
1390         printf("             MIME type is -->\n");
1391         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag.  Make sure to quote the\n");
1392         printf("                               comment if necessary.  This option may appear\n");
1393         printf("                               more than once to add several comments.  NOTE:\n");
1394         printf("                               all tags will be added to all encoded files.\n");
1395         printf("      --tag-from-file=FIELD=FILENAME   Like --tag, except FILENAME is a file\n");
1396         printf("                               whose contents will be read verbatim to set the\n");
1397         printf("                               tag value.  The contents will be converted to\n");
1398         printf("                               UTF-8 from the local charset.  This can be used\n");
1399         printf("                               to store a cuesheet in a tag (e.g.\n");
1400         printf("                               --tag-from-file=\"CUESHEET=image.cue\").  Do not\n");
1401         printf("                               try to store binary data in tag fields!  Use\n");
1402         printf("                               APPLICATION blocks for that.\n");
1403         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1404         printf("       #  : a specific sample number for a seek point\n");
1405         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1406         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1407         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1408         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1409         printf("           ified union of all such values.\n");
1410         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1411         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1412         printf("           input size before starting.\n");
1413         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1414         printf("           either no seek point entered (if the input size is determinable\n");
1415         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1416         printf("           determinable)\n");
1417         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1418         printf("                               block of the given length (in bytes) after the\n");
1419         printf("                               STREAMINFO block.  This is useful if you plan\n");
1420         printf("                               to tag the file later with an APPLICATION\n");
1421         printf("                               block; instead of having to rewrite the entire\n");
1422         printf("                               file later just to insert your block, you can\n");
1423         printf("                               write directly over the PADDING block.  Note\n");
1424         printf("                               that the total length of the PADDING block will\n");
1425         printf("                               be 4 bytes longer than the length given because\n");
1426         printf("                               of the 4 metadata block header bytes.  You can\n");
1427         printf("                               force no PADDING block at all to be written with\n");
1428         printf("                               --no-padding.  The encoder writes a PADDING\n");
1429         printf("                               block of 8192 bytes by default, or 65536 bytes\n");
1430         printf("                               if the input audio is more than 20 minutes long.\n");
1431         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1432         printf("                               1152 for -l 0, else 4096; must be one of 192,\n");
1433         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1434         printf("                               4096 (and 8192 or 16384 if the sample rate is\n");
1435         printf("                               >48kHz) for Subset streams.\n");
1436         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 3\n");
1437         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 3\n");
1438         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1439         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4096 -r 4\n");
1440         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4096 -M -r 4\n");
1441         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4096 -m -r 5\n");
1442         printf("                                     -5 is the default setting\n");
1443         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4096 -m -r 6\n");
1444         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4096 -m -e -r 6\n");
1445         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4096 -m -e -r 6\n");
1446         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1447         printf("                                     (stereo only)\n");
1448         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1449         printf("                                     (stereo only)\n");
1450         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1451         printf("  -A, --apodization=\"function\"       Window audio data with given the function.\n");
1452         printf("                                     The functions are: bartlett, bartlett_hann,\n");
1453         printf("                                     blackman, blackman_harris_4term_92db,\n");
1454         printf("                                     connes, flattop, gauss(STDDEV), hamming,\n");
1455         printf("                                     hann, kaiser_bessel, nuttall, rectangle,\n");
1456         printf("                                     triangle, tukey(P), welch.  More than one\n");
1457         printf("                                     may be specified but encoding time is a\n");
1458         printf("                                     multiple of the number of functions since\n");
1459         printf("                                     they are each tried in turn.  The encoder\n");
1460         printf("                                     chooses suitable defaults in the absence\n");
1461         printf("                                     of any -A options.\n");
1462         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors.\n");
1463         printf("                                     Must be <= 12 for Subset streams if sample\n");
1464         printf("                                     rate is <=48kHz.\n");
1465         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1466         printf("                                     quantization (expensive!); overrides -q;\n");
1467         printf("                                     does nothing if using -l 0\n");
1468         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1469         printf("                                     linear-predictor coefficients; 0 => let\n");
1470         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1471         printf("                                     default is -q 0)\n");
1472         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1473         printf("                                     (# is 0..16; min defaults to 0; the\n");
1474         printf("                                     default is -r 0; above 4 doesn't usually\n");
1475         printf("                                     help much)\n");
1476         printf("format options:\n");
1477         printf("      --endian={big|little}    Set byte order for samples\n");
1478         printf("      --channels=#             Number of channels\n");
1479         printf("      --bps=#                  Number of bits per sample\n");
1480         printf("      --sample-rate=#          Sample rate in Hz\n");
1481         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1482         printf("      --input-size=#           Size of the raw input in bytes.  If you are\n");
1483         printf("                               encoding raw samples from stdin, you must set\n");
1484         printf("                               this option in order to be able to use --skip,\n");
1485         printf("                               --until, --cue-sheet, or other options that need\n");
1486         printf("                               to know the size of the input beforehand.  If\n");
1487         printf("                               the size given is greater than what is found in\n");
1488         printf("                               the input stream, the encoder will complain\n");
1489         printf("                               about an unexpected end-of-file.  If the size\n");
1490         printf("                               given is less, samples will be truncated.\n");
1491         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1492         printf("                               option is not needed if the output filename (as\n");
1493         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1494         printf("                               has no effect when encoding since input AIFF is\n");
1495         printf("                               auto-detected.\n");
1496         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1497         printf("                               decoding) to be treated as raw samples\n");
1498         printf("negative options:\n");
1499         printf("      --no-adaptive-mid-side\n");
1500         printf("      --no-decode-through-errors\n");
1501         printf("      --no-delete-input-file\n");
1502         printf("      --no-exhaustive-model-search\n");
1503         printf("      --no-lax\n");
1504         printf("      --no-mid-side\n");
1505 #if FLAC__HAS_OGG
1506         printf("      --no-ogg\n");
1507 #endif
1508         printf("      --no-padding\n");
1509         printf("      --no-qlp-coeff-prec-search\n");
1510         printf("      --no-residual-gnuplot\n");
1511         printf("      --no-residual-text\n");
1512         printf("      --no-sector-align\n");
1513         printf("      --no-seektable\n");
1514         printf("      --no-silent\n");
1515         printf("      --no-force\n");
1516         printf("      --no-verify\n");
1517         printf("      --no-warnings-as-errors\n");
1518 }
1519
1520 void format_mistake(const char *infilename, FileFormat wrong, FileFormat right)
1521 {
1522         /* WATCHOUT: indexed by FileFormat */
1523         static const char * const ff[] = { "raw", "WAVE", "AIFF", "FLAC", "Ogg FLAC" };
1524         flac__utils_printf(stderr, 1, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, ff[wrong], ff[right]);
1525 }
1526
1527 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1528 {
1529         FILE *encode_infile;
1530         FLAC__byte lookahead[12];
1531         unsigned lookahead_length = 0;
1532         FileFormat fmt = RAW;
1533         FLAC__bool is_aifc = false;
1534         int retval;
1535         off_t infilesize;
1536         encode_options_t common_options;
1537         const char *outfilename = get_encoded_outfilename(infilename); /* the final name of the encoded file */
1538         /* internal_outfilename is the file we will actually write to; it will be a temporary name if infilename==outfilename */
1539         char *internal_outfilename = 0; /* NULL implies 'use outfilename' */
1540
1541         if(0 == outfilename) {
1542                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1543                 return 1;
1544         }
1545
1546         if(0 == strcmp(infilename, "-")) {
1547                 infilesize = (off_t)(-1);
1548                 encode_infile = grabbag__file_get_binary_stdin();
1549         }
1550         else {
1551                 infilesize = grabbag__file_get_filesize(infilename);
1552                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1553                         flac__utils_printf(stderr, 1, "ERROR: can't open input file %s: %s\n", infilename, strerror(errno));
1554                         return 1;
1555                 }
1556         }
1557
1558         if(!option_values.force_raw_format) {
1559                 /* first set format based on name */
1560                 if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".wav"))
1561                         fmt= WAV;
1562                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".aif"))
1563                         fmt= AIF;
1564                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".aiff"))
1565                         fmt= AIF;
1566                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".flac"))
1567                         fmt= FLAC;
1568                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".ogg"))
1569                         fmt= OGGFLAC;
1570
1571                 /* attempt to guess the file type based on the first 12 bytes */
1572                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1573                         if(fmt != RAW) {
1574                                 format_mistake(infilename, fmt, RAW);
1575                                 if(option_values.treat_warnings_as_errors) {
1576                                         conditional_fclose(encode_infile);
1577                                         return 1;
1578                                 }
1579                         }
1580                         fmt= RAW;
1581                 }
1582                 else {
1583                         if(!strncmp((const char *)lookahead, "ID3", 3)) {
1584                                 flac__utils_printf(stderr, 1, "ERROR: input file %s has an ID3v2 tag\n", infilename);
1585                                 return 1;
1586                         }
1587                         else if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1588                                 fmt= WAV;
1589                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1590                                 fmt= AIF;
1591                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFC", 4)) {
1592                                 fmt= AIF;
1593                                 is_aifc = true;
1594                         }
1595                         else if(!memcmp(lookahead, FLAC__STREAM_SYNC_STRING, sizeof(FLAC__STREAM_SYNC_STRING)))
1596                                 fmt= FLAC;
1597                         /* this could be made more accurate by looking at the first packet */
1598                         else if(!memcmp(lookahead, "OggS", 4))
1599                                 fmt= OGGFLAC;
1600                         else {
1601                                 if(fmt != RAW) {
1602                                         format_mistake(infilename, fmt, RAW);
1603                                         if(option_values.treat_warnings_as_errors) {
1604                                                 conditional_fclose(encode_infile);
1605                                                 return 1;
1606                                         }
1607                                 }
1608                                 fmt= RAW;
1609                         }
1610                 }
1611         }
1612
1613         /*
1614          * Error if output file already exists (and -f not used).
1615          * Use grabbag__file_get_filesize() as a cheap way to check.
1616          */
1617         if(!option_values.test_only && !option_values.force_file_overwrite && strcmp(outfilename, "-") && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1618                 if(fmt == FLAC) {
1619                         /* need more detailed error message when re-flac'ing to avoid confusing the user */
1620                         flac__utils_printf(stderr, 1,
1621                                 "ERROR: output file %s already exists.\n\n"
1622                                 "By default flac encodes files to FLAC format; if you meant to decode this file\n"
1623                                 "from FLAC to something else, use -d.  If you meant to re-encode this file from\n"
1624                                 "FLAC to FLAC again, use -f to force writing to the same file, or -o to specify\n"
1625                                 "a different output filename.\n",
1626                                 outfilename
1627                         );
1628                 }
1629                 else if(fmt == OGGFLAC) {
1630                         /* need more detailed error message when re-flac'ing to avoid confusing the user */
1631                         flac__utils_printf(stderr, 1,
1632                                 "ERROR: output file %s already exists.\n\n"
1633                                 "By default 'flac -ogg' encodes files to Ogg FLAC format; if you meant to decode\n"
1634                                 "this file from Ogg FLAC to something else, use -d.  If you meant to re-encode\n"
1635                                 "this file from Ogg FLAC to Ogg FLAC again, use -f to force writing to the same\n"
1636                                 "file, or -o to specify a different output filename.\n",
1637                                 outfilename
1638                         );
1639                 }
1640                 else
1641                         flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1642                 conditional_fclose(encode_infile);
1643                 return 1;
1644         }
1645
1646         if(option_values.format_input_size >= 0) {
1647                 if (fmt != RAW || infilesize >= 0) {
1648                         flac__utils_printf(stderr, 1, "ERROR: can only use --input-size when encoding raw samples from stdin\n");
1649                         conditional_fclose(encode_infile);
1650                         return 1;
1651                 }
1652                 else {
1653                         infilesize = option_values.format_input_size;
1654                 }
1655         }
1656
1657         if(option_values.sector_align && (fmt == FLAC || fmt == OGGFLAC)) {
1658                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input file is FLAC or Ogg FLAC\n");
1659                 conditional_fclose(encode_infile);
1660                 return 1;
1661         }
1662         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1663                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input size is unknown\n");
1664                 conditional_fclose(encode_infile);
1665                 return 1;
1666         }
1667
1668         if(fmt == RAW) {
1669                 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) {
1670                         conditional_fclose(encode_infile);
1671                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1672                 }
1673         }
1674
1675         if(encode_infile == stdin || option_values.force_to_stdout) {
1676                 if(option_values.replay_gain) {
1677                         conditional_fclose(encode_infile);
1678                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1679                 }
1680         }
1681         if(option_values.replay_gain && option_values.use_ogg) {
1682                 conditional_fclose(encode_infile);
1683                 return usage_error("ERROR: --replay-gain cannot be used when encoding to Ogg FLAC yet\n");
1684         }
1685
1686         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative) {
1687                 conditional_fclose(encode_infile);
1688                 return usage_error("ERROR: invalid value for --skip\n");
1689         }
1690
1691         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 */
1692                 conditional_fclose(encode_infile);
1693                 return usage_error("ERROR: invalid value for --until\n");
1694         }
1695         /* if there is no "--until" we want to default to "--until=-0" */
1696         if(0 == option_values.until_specification)
1697                 common_options.until_specification.is_relative = true;
1698
1699         common_options.verify = option_values.verify;
1700         common_options.treat_warnings_as_errors = option_values.treat_warnings_as_errors;
1701 #if FLAC__HAS_OGG
1702         common_options.use_ogg = option_values.use_ogg;
1703         /* set a random serial number if one has not yet been specified */
1704         if(!option_values.has_serial_number) {
1705                 option_values.serial_number = rand();
1706                 option_values.has_serial_number = true;
1707         }
1708         common_options.serial_number = option_values.serial_number++;
1709 #endif
1710         common_options.lax = option_values.lax;
1711         common_options.padding = option_values.padding;
1712         common_options.num_compression_settings = option_values.num_compression_settings;
1713         FLAC__ASSERT(sizeof(common_options.compression_settings) >= sizeof(option_values.compression_settings));
1714         memcpy(common_options.compression_settings, option_values.compression_settings, sizeof(option_values.compression_settings));
1715         common_options.requested_seek_points = option_values.requested_seek_points;
1716         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1717         common_options.cuesheet_filename = option_values.cuesheet_filename;
1718         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1719         common_options.cued_seekpoints = option_values.cued_seekpoints;
1720         common_options.channel_map_none = option_values.channel_map_none;
1721         common_options.is_first_file = is_first_file;
1722         common_options.is_last_file = is_last_file;
1723         common_options.align_reservoir = align_reservoir;
1724         common_options.align_reservoir_samples = &align_reservoir_samples;
1725         common_options.replay_gain = option_values.replay_gain;
1726         common_options.sector_align = option_values.sector_align;
1727         common_options.vorbis_comment = option_values.vorbis_comment;
1728         FLAC__ASSERT(sizeof(common_options.pictures) >= sizeof(option_values.pictures));
1729         memcpy(common_options.pictures, option_values.pictures, sizeof(option_values.pictures));
1730         common_options.num_pictures = option_values.num_pictures;
1731         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1732         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1733         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1734
1735         /* if infilename and outfilename point to the same file, we need to write to a temporary file */
1736         if(encode_infile != stdin && grabbag__file_are_same(infilename, outfilename)) {
1737                 static const char *tmp_suffix = ".tmp,fl-ac+en'c";
1738                 /*@@@@ still a remote possibility that a file with this filename exists */
1739                 if(0 == (internal_outfilename = malloc(strlen(outfilename)+strlen(tmp_suffix)+1))) {
1740                         flac__utils_printf(stderr, 1, "ERROR allocating memory for tempfile name\n");
1741                         conditional_fclose(encode_infile);
1742                         return 1;
1743                 }
1744                 strcpy(internal_outfilename, outfilename);
1745                 strcat(internal_outfilename, tmp_suffix);
1746         }
1747
1748         if(fmt == RAW) {
1749                 raw_encode_options_t options;
1750
1751                 options.common = common_options;
1752                 options.is_big_endian = option_values.format_is_big_endian;
1753                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1754                 options.channels = option_values.format_channels;
1755                 options.bps = option_values.format_bps;
1756                 options.sample_rate = option_values.format_sample_rate;
1757
1758                 retval = flac__encode_raw(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1759         }
1760         else if(fmt == FLAC || fmt == OGGFLAC) {
1761                 flac_encode_options_t options;
1762
1763                 options.common = common_options;
1764
1765                 retval = flac__encode_flac(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options, fmt==OGGFLAC);
1766         }
1767         else {
1768                 wav_encode_options_t options;
1769
1770                 options.common = common_options;
1771
1772                 if(fmt == AIF)
1773                         retval = flac__encode_aif(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options, is_aifc);
1774                 else
1775                         retval = flac__encode_wav(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1776         }
1777
1778         if(retval == 0) {
1779                 if(strcmp(outfilename, "-")) {
1780                         if(option_values.replay_gain) {
1781                                 float title_gain, title_peak;
1782                                 const char *error;
1783                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1784                                 if(
1785                                         0 != (error = grabbag__replaygain_store_to_file_reference(internal_outfilename? internal_outfilename : outfilename, /*preserve_modtime=*/true)) ||
1786                                         0 != (error = grabbag__replaygain_store_to_file_title(internal_outfilename? internal_outfilename : outfilename, title_gain, title_peak, /*preserve_modtime=*/true))
1787                                 ) {
1788                                         flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain reference/title tags (%s)\n", outfilename, error);
1789                                 }
1790                         }
1791                         if(strcmp(infilename, "-"))
1792                                 grabbag__file_copy_metadata(infilename, internal_outfilename? internal_outfilename : outfilename);
1793                 }
1794         }
1795
1796         /* rename temporary file if necessary */
1797         if(retval == 0 && internal_outfilename != 0) {
1798                 if(rename(internal_outfilename, outfilename) < 0) {
1799 #if defined _MSC_VER || defined __MINGW32__ || defined __EMX__
1800                         /* on some flavors of windows, rename() will fail if the destination already exists, so we unlink and try again */
1801                         if(unlink(outfilename) < 0) {
1802                                 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);
1803                                 retval = 1;
1804                         }
1805                         else if(rename(internal_outfilename, outfilename) < 0) {
1806                                 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);
1807                                 retval = 1;
1808                         }
1809 #else
1810                         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);
1811                         retval = 1;
1812 #endif
1813                 }
1814         }
1815
1816         /* handle --delete-input-file, but don't want to delete if piping from stdin, or if input filename and output filename are the same */
1817         if(retval == 0 && option_values.delete_input && strcmp(infilename, "-") && internal_outfilename == 0)
1818                 unlink(infilename);
1819
1820         if(internal_outfilename != 0)
1821                 free(internal_outfilename);
1822
1823         return retval;
1824 }
1825
1826 int decode_file(const char *infilename)
1827 {
1828         int retval;
1829         FLAC__bool treat_as_ogg = false;
1830         decode_options_t common_options;
1831         const char *outfilename = get_decoded_outfilename(infilename);
1832
1833         if(0 == outfilename) {
1834                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1835                 return 1;
1836         }
1837
1838         /*
1839          * Error if output file already exists (and -f not used).
1840          * Use grabbag__file_get_filesize() as a cheap way to check.
1841          */
1842         if(!option_values.test_only && !option_values.force_file_overwrite && strcmp(outfilename, "-") && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1843                 flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1844                 return 1;
1845         }
1846
1847         if(!option_values.test_only && !option_values.analyze) {
1848                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1849                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1850         }
1851
1852         if(option_values.use_ogg)
1853                 treat_as_ogg = true;
1854         else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".ogg"))
1855                 treat_as_ogg = true;
1856         else
1857                 treat_as_ogg = false;
1858
1859 #if !FLAC__HAS_OGG
1860         if(treat_as_ogg) {
1861                 flac__utils_printf(stderr, 1, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1862                 return 1;
1863         }
1864 #endif
1865
1866         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1867                 return usage_error("ERROR: invalid value for --skip\n");
1868
1869         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 */
1870                 return usage_error("ERROR: invalid value for --until\n");
1871         /* if there is no "--until" we want to default to "--until=-0" */
1872         if(0 == option_values.until_specification)
1873                 common_options.until_specification.is_relative = true;
1874
1875         if(option_values.cue_specification) {
1876                 if(!flac__utils_parse_cue_specification(option_values.cue_specification, &common_options.cue_specification))
1877                         return usage_error("ERROR: invalid value for --cue\n");
1878                 common_options.has_cue_specification = true;
1879         }
1880         else
1881                 common_options.has_cue_specification = false;
1882
1883         common_options.treat_warnings_as_errors = option_values.treat_warnings_as_errors;
1884         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1885         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1886 #if FLAC__HAS_OGG
1887         common_options.is_ogg = treat_as_ogg;
1888         common_options.use_first_serial_number = !option_values.has_serial_number;
1889         common_options.serial_number = option_values.serial_number;
1890 #endif
1891         common_options.channel_map_none = option_values.channel_map_none;
1892
1893         if(!option_values.force_raw_format) {
1894                 wav_decode_options_t options;
1895
1896                 options.common = common_options;
1897
1898                 if(
1899                         option_values.force_aiff_format ||
1900                         (strlen(outfilename) >= 4 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-4), ".aif")) ||
1901                         (strlen(outfilename) >= 5 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-5), ".aiff"))
1902                 )
1903                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1904                 else
1905                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1906         }
1907         else {
1908                 raw_decode_options_t options;
1909
1910                 options.common = common_options;
1911                 options.is_big_endian = option_values.format_is_big_endian;
1912                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1913
1914                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1915         }
1916
1917         if(retval == 0 && strcmp(infilename, "-")) {
1918                 if(strcmp(outfilename, "-"))
1919                         grabbag__file_copy_metadata(infilename, outfilename);
1920                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1921                         unlink(infilename);
1922         }
1923
1924         return retval;
1925 }
1926
1927 const char *get_encoded_outfilename(const char *infilename)
1928 {
1929         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1930         return get_outfilename(infilename, suffix);
1931 }
1932
1933 const char *get_decoded_outfilename(const char *infilename)
1934 {
1935         const char *suffix;
1936         if(option_values.analyze) {
1937                 suffix = ".ana";
1938         }
1939         else if(option_values.force_raw_format) {
1940                 suffix = ".raw";
1941         }
1942         else if(option_values.force_aiff_format) {
1943                 suffix = ".aiff";
1944         }
1945         else {
1946                 suffix = ".wav";
1947         }
1948         return get_outfilename(infilename, suffix);
1949 }
1950
1951 const char *get_outfilename(const char *infilename, const char *suffix)
1952 {
1953         if(0 == option_values.cmdline_forced_outfilename) {
1954                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1955
1956                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1957                         strcpy(buffer, "-");
1958                 }
1959                 else {
1960                         char *p;
1961                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
1962                                 return 0;
1963                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
1964                                 return 0;
1965                         /* the . must come after any / to avoid problems with, e.g. "some.directory/extensionless-filename" */
1966                         if(0 == (p = strrchr(buffer, '.')) || strchr(p, '/')) {
1967                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1968                                         return 0;
1969                         }
1970                         else {
1971                                 *p = '\0';
1972                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1973                                         return 0;
1974                         }
1975                 }
1976                 return buffer;
1977         }
1978         else
1979                 return option_values.cmdline_forced_outfilename;
1980 }
1981
1982 void die(const char *message)
1983 {
1984         FLAC__ASSERT(0 != message);
1985         flac__utils_printf(stderr, 1, "ERROR: %s\n", message);
1986         exit(1);
1987 }
1988
1989 int conditional_fclose(FILE *f)
1990 {
1991         if(f == 0 || f == stdin || f == stdout)
1992                 return 0;
1993         else
1994                 return fclose(f);
1995 }
1996
1997 char *local_strdup(const char *source)
1998 {
1999         char *ret;
2000         FLAC__ASSERT(0 != source);
2001         if(0 == (ret = strdup(source)))
2002                 die("out of memory during strdup()");
2003         return ret;
2004 }
2005
2006 #ifdef _MSC_VER
2007 /* There's no strtoll() in MSVC6 so we just write a specialized one */
2008 FLAC__int64 local__strtoll(const char *src, char **endptr)
2009 {
2010         FLAC__bool neg = false;
2011         FLAC__int64 ret = 0;
2012         int c;
2013         FLAC__ASSERT(0 != src);
2014         if(*src == '-') {
2015                 neg = true;
2016                 src++;
2017         }
2018         while(0 != (c = *src)) {
2019                 c -= '0';
2020                 if(c >= 0 && c <= 9)
2021                         ret = (ret * 10) + c;
2022                 else
2023                         break;
2024                 src++;
2025         }
2026         if(endptr)
2027                 *endptr = (char*)src;
2028         return neg? -ret : ret;
2029 }
2030 #endif