add --no-md5-sum
[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         { "no-md5-sum"                , share__no_argument, 0, 0 },
211
212         {0, 0, 0, 0}
213 };
214
215
216 /*
217  * global to hold command-line option values
218  */
219
220 static struct {
221         FLAC__bool show_help;
222         FLAC__bool show_explain;
223         FLAC__bool show_version;
224         FLAC__bool mode_decode;
225         FLAC__bool verify;
226         FLAC__bool treat_warnings_as_errors;
227         FLAC__bool force_file_overwrite;
228         FLAC__bool continue_through_decode_errors;
229         replaygain_synthesis_spec_t replaygain_synthesis_spec;
230         FLAC__bool lax;
231         FLAC__bool test_only;
232         FLAC__bool analyze;
233         FLAC__bool use_ogg;
234         FLAC__bool has_serial_number; /* true iff --serial-number was used */
235         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
236         FLAC__bool force_to_stdout;
237         FLAC__bool force_aiff_format;
238         FLAC__bool force_raw_format;
239         FLAC__bool delete_input;
240         FLAC__bool replay_gain;
241         FLAC__bool sector_align;
242         const char *cmdline_forced_outfilename;
243         const char *output_prefix;
244         analysis_options aopts;
245         int padding; /* -1 => no -P options were given, 0 => -P- was given, else -P value */
246         size_t num_compression_settings;
247         compression_setting_t compression_settings[64]; /* bad MAGIC NUMBER but buffer overflow is checked */
248         const char *skip_specification;
249         const char *until_specification;
250         const char *cue_specification;
251         int format_is_big_endian;
252         int format_is_unsigned_samples;
253         int format_channels;
254         int format_bps;
255         int format_sample_rate;
256         off_t format_input_size;
257         char requested_seek_points[5000]; /* bad MAGIC NUMBER but buffer overflow is checked */
258         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
259         const char *cuesheet_filename;
260         FLAC__bool cued_seekpoints;
261         FLAC__bool channel_map_none; /* --channel-map=none specified, eventually will expand to take actual channel map */
262
263         unsigned num_files;
264         char **filenames;
265
266         FLAC__StreamMetadata *vorbis_comment;
267         FLAC__StreamMetadata *pictures[64];
268         unsigned num_pictures;
269
270         struct {
271                 FLAC__bool disable_constant_subframes;
272                 FLAC__bool disable_fixed_subframes;
273                 FLAC__bool disable_verbatim_subframes;
274                 FLAC__bool do_md5;
275         } debug;
276 } option_values;
277
278
279 /*
280  * miscellaneous globals
281  */
282
283 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
284 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
285 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
286
287
288 int main(int argc, char *argv[])
289 {
290         int retval = 0;
291
292 #ifdef __EMX__
293         _response(&argc, &argv);
294         _wildcard(&argc, &argv);
295 #endif
296
297         srand((unsigned)time(0));
298         setlocale(LC_ALL, "");
299         if(!init_options()) {
300                 flac__utils_printf(stderr, 1, "ERROR: allocating memory\n");
301                 retval = 1;
302         }
303         else {
304                 if((retval = parse_options(argc, argv)) == 0)
305                         retval = do_it();
306         }
307
308         free_options();
309
310         return retval;
311 }
312
313 int do_it(void)
314 {
315         int retval = 0;
316
317         if(option_values.show_version) {
318                 show_version();
319                 return 0;
320         }
321         else if(option_values.show_explain) {
322                 show_explain();
323                 return 0;
324         }
325         else if(option_values.show_help) {
326                 show_help();
327                 return 0;
328         }
329         else {
330                 if(option_values.num_files == 0) {
331                         if(flac__utils_verbosity_ >= 1)
332                                 short_usage();
333                         return 0;
334                 }
335
336                 /*
337                  * tweak options; validate the values
338                  */
339                 if(!option_values.mode_decode) {
340                         if(0 != option_values.cue_specification)
341                                 return usage_error("ERROR: --cue is not allowed in test mode\n");
342                 }
343                 else {
344                         if(option_values.test_only) {
345                                 if(0 != option_values.skip_specification)
346                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
347                                 if(0 != option_values.until_specification)
348                                         return usage_error("ERROR: --until is not allowed in test mode\n");
349                                 if(0 != option_values.cue_specification)
350                                         return usage_error("ERROR: --cue is not allowed in test mode\n");
351                                 if(0 != option_values.analyze)
352                                         return usage_error("ERROR: analysis mode (-a/--analyze) and test mode (-t/--test) cannot be used together\n");
353                         }
354                 }
355
356                 if(0 != option_values.cue_specification && (0 != option_values.skip_specification || 0 != option_values.until_specification))
357                         return usage_error("ERROR: --cue may not be combined with --skip or --until\n");
358
359                 if(option_values.format_channels >= 0) {
360                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
361                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
362                 }
363                 if(option_values.format_bps >= 0) {
364                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
365                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
366                 }
367                 if(option_values.format_sample_rate >= 0) {
368                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
369                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
370                 }
371                 if(option_values.force_raw_format && option_values.force_aiff_format)
372                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
373                 if(option_values.mode_decode) {
374                         if(!option_values.force_raw_format) {
375                                 if(option_values.format_is_big_endian >= 0)
376                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
377                                 if(option_values.format_is_unsigned_samples >= 0)
378                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
379                         }
380                         if(option_values.format_channels >= 0)
381                                 return usage_error("ERROR: --channels not allowed with --decode\n");
382                         if(option_values.format_bps >= 0)
383                                 return usage_error("ERROR: --bps not allowed with --decode\n");
384                         if(option_values.format_sample_rate >= 0)
385                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
386                 }
387
388                 if(option_values.sector_align) {
389                         if(option_values.mode_decode)
390                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
391                         if(0 != option_values.skip_specification)
392                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
393                         if(0 != option_values.until_specification)
394                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
395                         if(0 != option_values.cue_specification)
396                                 return usage_error("ERROR: --sector-align not allowed with --cue\n");
397                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
398                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
399                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
400                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
401                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
402                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
403                 }
404                 if(option_values.replay_gain) {
405                         if(option_values.force_to_stdout)
406                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
407                         if(option_values.mode_decode)
408                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
409                         if(option_values.format_channels > 2)
410                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
411                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
412                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
413                         /*
414                          * We want to reserve padding space for the ReplayGain
415                          * tags that we will set later, to avoid rewriting the
416                          * whole file.
417                          */
418                         if(option_values.padding <= 0) {
419                                 flac__utils_printf(stderr, 1, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
420                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
421                         }
422                         else {
423                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
424                         }
425                 }
426                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
427                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
428                 }
429                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
430                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
431                 }
432                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
433                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
434                 }
435         }
436
437         flac__utils_printf(stderr, 2, "\n");
438         flac__utils_printf(stderr, 2, "flac %s, Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson\n", FLAC__VERSION_STRING);
439         flac__utils_printf(stderr, 2, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
440         flac__utils_printf(stderr, 2, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
441
442         if(option_values.mode_decode) {
443                 FLAC__bool first = true;
444
445                 if(option_values.num_files == 0) {
446                         retval = decode_file("-");
447                 }
448                 else {
449                         unsigned i;
450                         if(option_values.num_files > 1)
451                                 option_values.cmdline_forced_outfilename = 0;
452                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
453                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
454                                         continue;
455                                 retval |= decode_file(option_values.filenames[i]);
456                                 first = false;
457                         }
458                 }
459         }
460         else { /* encode */
461                 FLAC__bool first = true;
462
463                 if(option_values.num_files == 0) {
464                         retval = encode_file("-", first, true);
465                 }
466                 else {
467                         unsigned i;
468                         if(option_values.num_files > 1)
469                                 option_values.cmdline_forced_outfilename = 0;
470                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
471                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
472                                         continue;
473                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
474                                 first = false;
475                         }
476                         if(option_values.replay_gain && retval == 0) {
477                                 float album_gain, album_peak;
478                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
479                                 for(i = 0; i < option_values.num_files; i++) {
480                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
481                                         if(0 == outfilename) {
482                                                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", option_values.filenames[i]);
483                                                 return 1;
484                                         }
485                                         if(0 == strcmp(option_values.filenames[i], "-")) {
486                                                 FLAC__ASSERT(0);
487                                                 /* double protection */
488                                                 flac__utils_printf(stderr, 1, "internal error\n");
489                                                 return 2;
490                                         }
491                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
492                                                 flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain album tags (%s)\n", outfilename, error);
493                                                 retval = 1;
494                                         }
495                                 }
496                         }
497                 }
498         }
499
500         return retval;
501 }
502
503 FLAC__bool init_options(void)
504 {
505         option_values.show_help = false;
506         option_values.show_explain = false;
507         option_values.mode_decode = false;
508         option_values.verify = false;
509         option_values.treat_warnings_as_errors = false;
510         option_values.force_file_overwrite = false;
511         option_values.continue_through_decode_errors = false;
512         option_values.replaygain_synthesis_spec.apply = false;
513         option_values.replaygain_synthesis_spec.use_album_gain = true;
514         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
515         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
516         option_values.replaygain_synthesis_spec.preamp = 0.0;
517         option_values.lax = false;
518         option_values.test_only = false;
519         option_values.analyze = false;
520         option_values.use_ogg = false;
521         option_values.has_serial_number = false;
522         option_values.serial_number = 0;
523         option_values.force_to_stdout = false;
524         option_values.force_aiff_format = false;
525         option_values.force_raw_format = false;
526         option_values.delete_input = false;
527         option_values.replay_gain = false;
528         option_values.sector_align = false;
529         option_values.cmdline_forced_outfilename = 0;
530         option_values.output_prefix = 0;
531         option_values.aopts.do_residual_text = false;
532         option_values.aopts.do_residual_gnuplot = false;
533         option_values.padding = -1;
534         option_values.num_compression_settings = 1;
535         option_values.compression_settings[0].type = CST_COMPRESSION_LEVEL;
536         option_values.compression_settings[0].value.t_unsigned = 5;
537         option_values.skip_specification = 0;
538         option_values.until_specification = 0;
539         option_values.cue_specification = 0;
540         option_values.format_is_big_endian = -1;
541         option_values.format_is_unsigned_samples = -1;
542         option_values.format_channels = -1;
543         option_values.format_bps = -1;
544         option_values.format_sample_rate = -1;
545         option_values.format_input_size = (off_t)(-1);
546         option_values.requested_seek_points[0] = '\0';
547         option_values.num_requested_seek_points = -1;
548         option_values.cuesheet_filename = 0;
549         option_values.cued_seekpoints = true;
550         option_values.channel_map_none = false;
551
552         option_values.num_files = 0;
553         option_values.filenames = 0;
554
555         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
556                 return false;
557         option_values.num_pictures = 0;
558
559         option_values.debug.disable_constant_subframes = false;
560         option_values.debug.disable_fixed_subframes = false;
561         option_values.debug.disable_verbatim_subframes = false;
562         option_values.debug.do_md5 = true;
563
564         return true;
565 }
566
567 int parse_options(int argc, char *argv[])
568 {
569         int short_option;
570         int option_index = 1;
571         FLAC__bool had_error = false;
572         const char *short_opts = "0123456789aA:b:cdefFhHl:mMo:pP:q:r:sS:tT:vVw";
573
574         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
575                 switch (short_option) {
576                         case 0: /* long option with no equivalent short option */
577                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
578                                 break;
579                         case '?':
580                         case ':':
581                                 had_error = true;
582                                 break;
583                         default: /* short option */
584                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
585                                 break;
586                 }
587         }
588
589         if(had_error) {
590                 return 1;
591         }
592
593         FLAC__ASSERT(share__optind <= argc);
594
595         option_values.num_files = argc - share__optind;
596
597         if(option_values.num_files > 0) {
598                 unsigned i = 0;
599                 if(0 == (option_values.filenames = (char**)malloc(sizeof(char*) * option_values.num_files)))
600                         die("out of memory allocating space for file names list");
601                 while(share__optind < argc)
602                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
603         }
604
605         return 0;
606 }
607
608 int parse_option(int short_option, const char *long_option, const char *option_argument)
609 {
610         const char *violation;
611         char *p;
612         int i;
613
614         if(short_option == 0) {
615                 FLAC__ASSERT(0 != long_option);
616                 if(0 == strcmp(long_option, "totally-silent")) {
617                         flac__utils_verbosity_ = 0;
618                 }
619                 else if(0 == strcmp(long_option, "delete-input-file")) {
620                         option_values.delete_input = true;
621                 }
622                 else if(0 == strcmp(long_option, "output-prefix")) {
623                         FLAC__ASSERT(0 != option_argument);
624                         option_values.output_prefix = option_argument;
625                 }
626                 else if(0 == strcmp(long_option, "skip")) {
627                         FLAC__ASSERT(0 != option_argument);
628                         option_values.skip_specification = option_argument;
629                 }
630                 else if(0 == strcmp(long_option, "until")) {
631                         FLAC__ASSERT(0 != option_argument);
632                         option_values.until_specification = option_argument;
633                 }
634                 else if(0 == strcmp(long_option, "input-size")) {
635                         FLAC__ASSERT(0 != option_argument);
636                         {
637                                 char *end;
638 #ifdef _MSC_VER
639                                 FLAC__int64 i;
640                                 i = local__strtoll(option_argument, &end);
641 #else
642                                 long long i;
643                                 i = strtoll(option_argument, &end, 10);
644 #endif
645                                 if(0 == strlen(option_argument) || *end)
646                                         return usage_error("ERROR: --%s must be a number\n", long_option);
647                                 option_values.format_input_size = (off_t)i;
648                                 if(option_values.format_input_size != i) /* check if off_t is smaller than long long */
649                                         return usage_error("ERROR: --%s too large; this build of flac does not support filesizes over 2GB\n", long_option);
650                                 if(option_values.format_input_size <= 0)
651                                         return usage_error("ERROR: --%s must be > 0\n", long_option);
652                         }
653                 }
654                 else if(0 == strcmp(long_option, "cue")) {
655                         FLAC__ASSERT(0 != option_argument);
656                         option_values.cue_specification = option_argument;
657                 }
658                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
659                         option_values.replaygain_synthesis_spec.apply = true;
660                         if (0 != option_argument) {
661                                 char *p;
662                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
663                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
664                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
665                                 for ( ; *p; p++) {
666                                         if (*p == 'a')
667                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
668                                         else if (*p == 't')
669                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
670                                         else if (*p == 'l')
671                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
672                                         else if (*p == 'L')
673                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
674                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
675                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
676                                                 p++;
677                                         }
678                                         else
679                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
680                                 }
681                         }
682                 }
683                 else if(0 == strcmp(long_option, "channel-map")) {
684                         if (0 == option_argument || strcmp(option_argument, "none"))
685                                 return usage_error("ERROR: only --channel-map=none currently supported\n");
686                         option_values.channel_map_none = true;
687                 }
688                 else if(0 == strcmp(long_option, "cuesheet")) {
689                         FLAC__ASSERT(0 != option_argument);
690                         option_values.cuesheet_filename = option_argument;
691                 }
692                 else if(0 == strcmp(long_option, "picture")) {
693                         const unsigned max_pictures = sizeof(option_values.pictures)/sizeof(option_values.pictures[0]);
694                         FLAC__ASSERT(0 != option_argument);
695                         if(option_values.num_pictures >= max_pictures)
696                                 return usage_error("ERROR: too many --picture arguments, only %u allowed\n", max_pictures);
697                         if(0 == (option_values.pictures[option_values.num_pictures] = grabbag__picture_parse_specification(option_argument, &violation)))
698                                 return usage_error("ERROR: (--picture) %s\n", violation);
699                         option_values.num_pictures++;
700                 }
701                 else if(0 == strcmp(long_option, "tag-from-file")) {
702                         FLAC__ASSERT(0 != option_argument);
703                         if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/true, &violation))
704                                 return usage_error("ERROR: (--tag-from-file) %s\n", violation);
705                 }
706                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
707                         option_values.cued_seekpoints = false;
708                 }
709                 else if(0 == strcmp(long_option, "force-aiff-format")) {
710                         option_values.force_aiff_format = true;
711                 }
712                 else if(0 == strcmp(long_option, "force-raw-format")) {
713                         option_values.force_raw_format = true;
714                 }
715                 else if(0 == strcmp(long_option, "lax")) {
716                         option_values.lax = true;
717                 }
718                 else if(0 == strcmp(long_option, "replay-gain")) {
719                         option_values.replay_gain = true;
720                 }
721                 else if(0 == strcmp(long_option, "sector-align")) {
722                         option_values.sector_align = true;
723                 }
724 #if FLAC__HAS_OGG
725                 else if(0 == strcmp(long_option, "ogg")) {
726                         option_values.use_ogg = true;
727                 }
728                 else if(0 == strcmp(long_option, "serial-number")) {
729                         option_values.has_serial_number = true;
730                         option_values.serial_number = atol(option_argument);
731                 }
732 #endif
733                 else if(0 == strcmp(long_option, "endian")) {
734                         FLAC__ASSERT(0 != option_argument);
735                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
736                                 option_values.format_is_big_endian = true;
737                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
738                                 option_values.format_is_big_endian = false;
739                         else
740                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
741                 }
742                 else if(0 == strcmp(long_option, "channels")) {
743                         FLAC__ASSERT(0 != option_argument);
744                         option_values.format_channels = atoi(option_argument);
745                 }
746                 else if(0 == strcmp(long_option, "bps")) {
747                         FLAC__ASSERT(0 != option_argument);
748                         option_values.format_bps = atoi(option_argument);
749                 }
750                 else if(0 == strcmp(long_option, "sample-rate")) {
751                         FLAC__ASSERT(0 != option_argument);
752                         option_values.format_sample_rate = atoi(option_argument);
753                 }
754                 else if(0 == strcmp(long_option, "sign")) {
755                         FLAC__ASSERT(0 != option_argument);
756                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
757                                 option_values.format_is_unsigned_samples = false;
758                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
759                                 option_values.format_is_unsigned_samples = true;
760                         else
761                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
762                 }
763                 else if(0 == strcmp(long_option, "residual-gnuplot")) {
764                         option_values.aopts.do_residual_gnuplot = true;
765                 }
766                 else if(0 == strcmp(long_option, "residual-text")) {
767                         option_values.aopts.do_residual_text = true;
768                 }
769                 /*
770                  * negatives
771                  */
772                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
773                         option_values.continue_through_decode_errors = false;
774                 }
775                 else if(0 == strcmp(long_option, "no-silent")) {
776                         flac__utils_verbosity_ = 2;
777                 }
778                 else if(0 == strcmp(long_option, "no-force")) {
779                         option_values.force_file_overwrite = false;
780                 }
781                 else if(0 == strcmp(long_option, "no-seektable")) {
782                         option_values.num_requested_seek_points = 0;
783                         option_values.requested_seek_points[0] = '\0';
784                 }
785                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
786                         option_values.delete_input = false;
787                 }
788                 else if(0 == strcmp(long_option, "no-replay-gain")) {
789                         option_values.replay_gain = false;
790                 }
791                 else if(0 == strcmp(long_option, "no-sector-align")) {
792                         option_values.sector_align = false;
793                 }
794                 else if(0 == strcmp(long_option, "no-lax")) {
795                         option_values.lax = false;
796                 }
797 #if FLAC__HAS_OGG
798                 else if(0 == strcmp(long_option, "no-ogg")) {
799                         option_values.use_ogg = false;
800                 }
801 #endif
802                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
803                         add_compression_setting_bool(CST_DO_EXHAUSTIVE_MODEL_SEARCH, false);
804                 }
805                 else if(0 == strcmp(long_option, "no-mid-side")) {
806                         add_compression_setting_bool(CST_DO_MID_SIDE, false);
807                         add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
808                 }
809                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
810                         add_compression_setting_bool(CST_DO_MID_SIDE, false);
811                         add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
812                 }
813                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
814                         add_compression_setting_bool(CST_DO_QLP_COEFF_PREC_SEARCH, false);
815                 }
816                 else if(0 == strcmp(long_option, "no-padding")) {
817                         option_values.padding = 0;
818                 }
819                 else if(0 == strcmp(long_option, "no-verify")) {
820                         option_values.verify = false;
821                 }
822                 else if(0 == strcmp(long_option, "no-warnings-as-errors")) {
823                         option_values.treat_warnings_as_errors = false;
824                 }
825                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
826                         option_values.aopts.do_residual_gnuplot = false;
827                 }
828                 else if(0 == strcmp(long_option, "no-residual-text")) {
829                         option_values.aopts.do_residual_text = false;
830                 }
831                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
832                         option_values.debug.disable_constant_subframes = true;
833                 }
834                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
835                         option_values.debug.disable_fixed_subframes = true;
836                 }
837                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
838                         option_values.debug.disable_verbatim_subframes = true;
839                 }
840                 else if(0 == strcmp(long_option, "no-md5-sum")) {
841                         option_values.debug.do_md5 = false;
842                 }
843         }
844         else {
845                 switch(short_option) {
846                         case 'h':
847                                 option_values.show_help = true;
848                                 break;
849                         case 'H':
850                                 option_values.show_explain = true;
851                                 break;
852                         case 'v':
853                                 option_values.show_version = true;
854                                 break;
855                         case 'd':
856                                 option_values.mode_decode = true;
857                                 break;
858                         case 'a':
859                                 option_values.mode_decode = true;
860                                 option_values.analyze = true;
861                                 break;
862                         case 't':
863                                 option_values.mode_decode = true;
864                                 option_values.test_only = true;
865                                 break;
866                         case 'c':
867                                 option_values.force_to_stdout = true;
868                                 break;
869                         case 's':
870                                 flac__utils_verbosity_ = 1;
871                                 break;
872                         case 'f':
873                                 option_values.force_file_overwrite = true;
874                                 break;
875                         case 'o':
876                                 FLAC__ASSERT(0 != option_argument);
877                                 option_values.cmdline_forced_outfilename = option_argument;
878                                 break;
879                         case 'F':
880                                 option_values.continue_through_decode_errors = true;
881                                 break;
882                         case 'T':
883                                 FLAC__ASSERT(0 != option_argument);
884                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/false, &violation))
885                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
886                                 break;
887                         case '0':
888                         case '1':
889                         case '2':
890                         case '3':
891                         case '4':
892                         case '5':
893                         case '6':
894                         case '7':
895                         case '8':
896                                 add_compression_setting_unsigned(CST_COMPRESSION_LEVEL, short_option-'0');
897                                 break;
898                         case '9':
899                                 return usage_error("ERROR: compression level '9' is reserved\n");
900                         case 'V':
901                                 option_values.verify = true;
902                                 break;
903                         case 'w':
904                                 option_values.treat_warnings_as_errors = true;
905                                 break;
906                         case 'S':
907                                 FLAC__ASSERT(0 != option_argument);
908                                 if(0 == strcmp(option_argument, "-")) {
909                                         option_values.num_requested_seek_points = 0;
910                                         option_values.requested_seek_points[0] = '\0';
911                                 }
912                                 else {
913                                         if(option_values.num_requested_seek_points < 0)
914                                                 option_values.num_requested_seek_points = 0;
915                                         option_values.num_requested_seek_points++;
916                                         if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
917                                                 return usage_error("ERROR: too many seekpoints requested\n");
918                                         }
919                                         else {
920                                                 strcat(option_values.requested_seek_points, option_argument);
921                                                 strcat(option_values.requested_seek_points, ";");
922                                         }
923                                 }
924                                 break;
925                         case 'P':
926                                 FLAC__ASSERT(0 != option_argument);
927                                 option_values.padding = atoi(option_argument);
928                                 if(option_values.padding < 0)
929                                         return usage_error("ERROR: argument to -%c must be >= 0; for no padding use -%c-\n", short_option, short_option);
930                                 break;
931                         case 'b':
932                                 FLAC__ASSERT(0 != option_argument);
933                                 i = atoi(option_argument);
934                                 if((i < (int)FLAC__MIN_BLOCK_SIZE || i > (int)FLAC__MAX_BLOCK_SIZE))
935                                         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);
936                                 add_compression_setting_unsigned(CST_BLOCKSIZE, (unsigned)i);
937                                 break;
938                         case 'e':
939                                 add_compression_setting_bool(CST_DO_EXHAUSTIVE_MODEL_SEARCH, true);
940                                 break;
941                         case 'E':
942                                 add_compression_setting_bool(CST_DO_ESCAPE_CODING, true);
943                                 break;
944                         case 'l':
945                                 FLAC__ASSERT(0 != option_argument);
946                                 i = atoi(option_argument);
947                                 if((i < 0 || i > (int)FLAC__MAX_LPC_ORDER))
948                                         return usage_error("ERROR: invalid LPC order (-%c) '%d', must be >= %u and <= %u\n", short_option, i, 0, FLAC__MAX_LPC_ORDER);
949                                 add_compression_setting_unsigned(CST_MAX_LPC_ORDER, (unsigned)i);
950                                 break;
951                         case 'A':
952                                 FLAC__ASSERT(0 != option_argument);
953                                 add_compression_setting_string(CST_APODIZATION, option_argument);
954                                 break;
955                         case 'm':
956                                 add_compression_setting_bool(CST_DO_MID_SIDE, true);
957                                 add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
958                                 break;
959                         case 'M':
960                                 add_compression_setting_bool(CST_DO_MID_SIDE, true);
961                                 add_compression_setting_bool(CST_LOOSE_MID_SIDE, true);
962                                 break;
963                         case 'p':
964                                 add_compression_setting_bool(CST_DO_QLP_COEFF_PREC_SEARCH, true);
965                                 break;
966                         case 'q':
967                                 FLAC__ASSERT(0 != option_argument);
968                                 i = atoi(option_argument);
969                                 if(i < 0 || (i > 0 && (i < (int)FLAC__MIN_QLP_COEFF_PRECISION || i > (int)FLAC__MAX_QLP_COEFF_PRECISION)))
970                                         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);
971                                 add_compression_setting_unsigned(CST_QLP_COEFF_PRECISION, (unsigned)i);
972                                 break;
973                         case 'r':
974                                 FLAC__ASSERT(0 != option_argument);
975                                 p = strchr(option_argument, ',');
976                                 if(0 == p) {
977                                         add_compression_setting_unsigned(CST_MIN_RESIDUAL_PARTITION_ORDER, 0);
978                                         i = atoi(option_argument);
979                                         if(i < 0)
980                                                 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);
981                                         add_compression_setting_unsigned(CST_MAX_RESIDUAL_PARTITION_ORDER, (unsigned)i);
982                                 }
983                                 else {
984                                         i = atoi(option_argument);
985                                         if(i < 0)
986                                                 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);
987                                         add_compression_setting_unsigned(CST_MIN_RESIDUAL_PARTITION_ORDER, (unsigned)i);
988                                         i = atoi(++p);
989                                         if(i < 0)
990                                                 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);
991                                         add_compression_setting_unsigned(CST_MAX_RESIDUAL_PARTITION_ORDER, (unsigned)i);
992                                 }
993                                 break;
994                         case 'R':
995                                 i = atoi(option_argument);
996                                 if(i < 0)
997                                         return usage_error("ERROR: invalid value '%d' for Rice parameter search distance (-%c), must be >= 0\n", i, short_option);
998                                 add_compression_setting_unsigned(CST_RICE_PARAMETER_SEARCH_DIST, (unsigned)i);
999                                 break;
1000                         default:
1001                                 FLAC__ASSERT(0);
1002                 }
1003         }
1004
1005         return 0;
1006 }
1007
1008 void free_options(void)
1009 {
1010         unsigned i;
1011         if(0 != option_values.filenames) {
1012                 for(i = 0; i < option_values.num_files; i++) {
1013                         if(0 != option_values.filenames[i])
1014                                 free(option_values.filenames[i]);
1015                 }
1016                 free(option_values.filenames);
1017         }
1018         if(0 != option_values.vorbis_comment)
1019                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1020         for(i = 0; i < option_values.num_pictures; i++)
1021                 FLAC__metadata_object_delete(option_values.pictures[i]);
1022 }
1023
1024 void add_compression_setting_bool(compression_setting_type_t type, FLAC__bool value)
1025 {
1026         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1027                 die("too many compression settings");
1028         option_values.compression_settings[option_values.num_compression_settings].type = type;
1029         option_values.compression_settings[option_values.num_compression_settings].value.t_bool = value;
1030         option_values.num_compression_settings++;
1031 }
1032
1033 void add_compression_setting_string(compression_setting_type_t type, const char *value)
1034 {
1035         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1036                 die("too many compression settings");
1037         option_values.compression_settings[option_values.num_compression_settings].type = type;
1038         option_values.compression_settings[option_values.num_compression_settings].value.t_string = value;
1039         option_values.num_compression_settings++;
1040 }
1041
1042 void add_compression_setting_unsigned(compression_setting_type_t type, unsigned value)
1043 {
1044         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1045                 die("too many compression settings");
1046         option_values.compression_settings[option_values.num_compression_settings].type = type;
1047         option_values.compression_settings[option_values.num_compression_settings].value.t_unsigned = value;
1048         option_values.num_compression_settings++;
1049 }
1050
1051 int usage_error(const char *message, ...)
1052 {
1053         if(flac__utils_verbosity_ >= 1) {
1054                 va_list args;
1055
1056                 FLAC__ASSERT(0 != message);
1057
1058                 va_start(args, message);
1059
1060                 (void) vfprintf(stderr, message, args);
1061
1062                 va_end(args);
1063
1064                 printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1065         }
1066
1067         return 1;
1068 }
1069
1070 void show_version(void)
1071 {
1072         printf("flac %s\n", FLAC__VERSION_STRING);
1073 }
1074
1075 static void usage_header(void)
1076 {
1077         printf("===============================================================================\n");
1078         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1079         printf("Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson\n");
1080         printf("\n");
1081         printf("This program is free software; you can redistribute it and/or\n");
1082         printf("modify it under the terms of the GNU General Public License\n");
1083         printf("as published by the Free Software Foundation; either version 2\n");
1084         printf("of the License, or (at your option) any later version.\n");
1085         printf("\n");
1086         printf("This program is distributed in the hope that it will be useful,\n");
1087         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1088         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1089         printf("GNU General Public License for more details.\n");
1090         printf("\n");
1091         printf("You should have received a copy of the GNU General Public License\n");
1092         printf("along with this program; if not, write to the Free Software\n");
1093         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1094         printf("===============================================================================\n");
1095 }
1096
1097 static void usage_summary(void)
1098 {
1099         printf("Usage:\n");
1100         printf("\n");
1101         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1102         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1103         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1104         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1105         printf("\n");
1106 }
1107
1108 void short_usage(void)
1109 {
1110         usage_header();
1111         printf("\n");
1112         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1113         printf("instructions use 'flac --explain'\n");
1114         printf("\n");
1115         printf("To encode:\n");
1116         printf("  flac [-#] [INPUTFILE [...]]\n");
1117         printf("\n");
1118         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1119         printf("\n");
1120         printf("To decode:\n");
1121         printf("  flac -d [INPUTFILE [...]]\n");
1122         printf("\n");
1123         printf("To test:\n");
1124         printf("  flac -t [INPUTFILE [...]]\n");
1125 }
1126
1127 void show_help(void)
1128 {
1129         usage_header();
1130         usage_summary();
1131         printf("general options:\n");
1132         printf("  -v, --version                Show the flac version number\n");
1133         printf("  -h, --help                   Show this screen\n");
1134         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1135         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1136         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1137         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1138         printf("  -c, --stdout                 Write output to stdout\n");
1139         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1140         printf("      --totally-silent         Do not print anything, including errors\n");
1141         printf("  -w, --warnings-as-errors     Treat all warnings as errors\n");
1142         printf("  -f, --force                  Force overwriting of output files\n");
1143         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1144         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1145         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1146         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1147         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1148 #if FLAC__HAS_OGG
1149         printf("      --ogg                    Use Ogg as transport layer\n");
1150         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1151 #endif
1152         printf("analysis options:\n");
1153         printf("      --residual-text          Include residual signal in text output\n");
1154         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1155         printf("decoding options:\n");
1156         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1157         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to decode\n");
1158         printf("encoding options:\n");
1159         printf("  -V, --verify                 Verify a correct encoding\n");
1160         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1161         printf("      --sector-align           Align multiple files on sector boundaries\n");
1162         printf("      --replay-gain            Calculate ReplayGain & store in FLAC tags\n");
1163         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1164         printf("      --picture=SPECIFICATION  Import picture and store in PICTURE block\n");
1165         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag; may appear multiple times\n");
1166         printf("      --tag-from-file=FIELD=FILENAME   Like --tag but gets value from file\n");
1167         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1168         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1169         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 3\n");
1170         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 3\n");
1171         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1172         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4096 -r 4\n");
1173         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4096 -M -r 4\n");
1174         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4096 -m -r 5\n");
1175         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4096 -m -r 6\n");
1176         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4096 -m -e -r 6\n");
1177         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4096 -m -e -r 6\n");
1178         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1179         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1180         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1181         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1182         printf("  -A, --apodization=\"function\"       Window audio data with given the function\n");
1183         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1184         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1185         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1186         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1187         printf("format options:\n");
1188         printf("      --endian={big|little}    Set byte order for samples\n");
1189         printf("      --channels=#             Number of channels\n");
1190         printf("      --bps=#                  Number of bits per sample\n");
1191         printf("      --sample-rate=#          Sample rate in Hz\n");
1192         printf("      --sign={signed|unsigned} Sign of samples\n");
1193         printf("      --input-size=#           Size of the raw input in bytes\n");
1194         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1195         printf("      --force-raw-format       Treat input or output as raw samples\n");
1196         printf("negative options:\n");
1197         printf("      --no-adaptive-mid-side\n");
1198         printf("      --no-decode-through-errors\n");
1199         printf("      --no-delete-input-file\n");
1200         printf("      --no-exhaustive-model-search\n");
1201         printf("      --no-lax\n");
1202         printf("      --no-mid-side\n");
1203 #if FLAC__HAS_OGG
1204         printf("      --no-ogg\n");
1205 #endif
1206         printf("      --no-padding\n");
1207         printf("      --no-qlp-coeff-prec-search\n");
1208         printf("      --no-replay-gain\n");
1209         printf("      --no-residual-gnuplot\n");
1210         printf("      --no-residual-text\n");
1211         printf("      --no-sector-align\n");
1212         printf("      --no-seektable\n");
1213         printf("      --no-silent\n");
1214         printf("      --no-force\n");
1215         printf("      --no-verify\n");
1216         printf("      --no-warnings-as-errors\n");
1217 }
1218
1219 void show_explain(void)
1220 {
1221         usage_header();
1222         usage_summary();
1223         printf("For encoding:\n");
1224         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF (or uncompressed AIFF-C)\n");
1225         printf("  file, or raw samples.\n");
1226         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1227         printf("For decoding, the reverse is true.\n");
1228         printf("\n");
1229         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1230         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1231         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1232         printf("instead of:\n");
1233         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1234         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1235         printf("WAVE/AIFF header contents when necessary.\n");
1236         printf("\n");
1237         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1238         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1239         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1240         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1241         printf("files using -fr.\n");
1242         printf("\n");
1243         printf("general options:\n");
1244         printf("  -v, --version                Show the flac version number\n");
1245         printf("  -h, --help                   Show basic usage a list of all options\n");
1246         printf("  -H, --explain                Show this screen\n");
1247         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1248         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1249         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1250         printf("  -c, --stdout                 Write output to stdout\n");
1251         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1252         printf("      --totally-silent         Do not print anything of any kind, including\n");
1253         printf("                               warnings or errors.  The exit code will be the\n");
1254         printf("                               only way to determine successful completion.\n");
1255         printf("  -w, --warnings-as-errors     Treat all warnings as errors\n");
1256         printf("  -f, --force                  Force overwriting of output files\n");
1257         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1258         printf("                               changes the extension.  May only be used when\n");
1259         printf("                               encoding a single file.  May not be used in\n");
1260         printf("                               conjunction with --output-prefix.\n");
1261         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1262         printf("                               STRING.  This can be useful for encoding or\n");
1263         printf("                               decoding files to a different directory.  Make\n");
1264         printf("                               sure if your STRING is a path name that it ends\n");
1265         printf("                               with a '/' slash.\n");
1266         printf("      --delete-input-file      Automatically delete the input file after a\n");
1267         printf("                               successful encode or decode.  If there was an\n");
1268         printf("                               error (including a verify error) the input file\n");
1269         printf("                               is left intact.\n");
1270         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1271         printf("                               be used both for encoding and decoding.  The\n");
1272         printf("                               alternative form mm:ss.ss can be used to specify\n");
1273         printf("                               minutes, seconds, and fractions of a second.\n");
1274         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1275         printf("                               file.  The given sample number is not included\n");
1276         printf("                               in the decoded output.  The alternative form\n");
1277         printf("                               mm:ss.ss can be used to specify minutes,\n");
1278         printf("                               seconds, and fractions of a second.  If a `+'\n");
1279         printf("                               sign is at the beginning, the --until point is\n");
1280         printf("                               relative to the --skip point.  If a `-' sign is\n");
1281         printf("                               at the beginning, the --until point is relative\n");
1282         printf("                               to end of the audio.\n");
1283 #if FLAC__HAS_OGG
1284         printf("      --ogg                    When encoding, generate Ogg FLAC output instead\n");
1285         printf("                               of native FLAC.  Ogg FLAC streams are FLAC\n");
1286         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1287         printf("                               resulting file should have an '.ogg' extension\n");
1288         printf("                               and will still be decodable by flac.  When\n");
1289         printf("                               decoding, force the input to be treated as\n");
1290         printf("                               Ogg FLAC.  This is useful when piping input\n");
1291         printf("                               from stdin or when the filename does not end in\n");
1292         printf("                               '.ogg'.\n");
1293         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1294         printf("                               encoding and no serial number is given, flac\n");
1295         printf("                               uses a random one.  If encoding to multiple files\n");
1296         printf("                               the serial number is incremented for each file.\n");
1297         printf("                               When decoding and no number is given, flac uses\n");
1298         printf("                               the serial number of the first page.\n");
1299 #endif
1300         printf("analysis options:\n");
1301         printf("      --residual-text          Include residual signal in text output.  This\n");
1302         printf("                               will make the file very big, much larger than\n");
1303         printf("                               even the decoded file.\n");
1304         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1305         printf("                               of each subframe\n");
1306         printf("decoding options:\n");
1307         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1308         printf("                               and removes the partially decoded file if it\n");
1309         printf("                               encounters a bitstream error.  With -F, errors\n");
1310         printf("                               are still printed but flac will continue\n");
1311         printf("                               decoding to completion.  Note that errors may\n");
1312         printf("                               cause the decoded audio to be missing some\n");
1313         printf("                               samples or have silent sections.\n");
1314         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to\n");
1315         printf("                               decode.  The optional first #.# is the track and\n");
1316         printf("                               index point at which decoding will start; the\n");
1317         printf("                               default is the beginning of the stream.  The\n");
1318         printf("                               optional second #.# is the track and index point\n");
1319         printf("                               at which decoding will end; the default is the\n");
1320         printf("                               end of the stream.  If the cuepoint does not\n");
1321         printf("                               exist, the closest one before it (for the start\n");
1322         printf("                               point) or after it (for the end point) will be\n");
1323         printf("                               used.  The cuepoints are merely translated into\n");
1324         printf("                               sample numbers then used as --skip and --until.\n");
1325         printf("                               A CD track can always be cued by, for example,\n");
1326         printf("                               --cue=9.1-10.1 for track 9, even if the CD has\n");
1327         printf("                               no 10th track.\n");
1328         printf("encoding options:\n");
1329         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1330         printf("                               output in parallel and comparing to the\n");
1331         printf("                               original\n");
1332         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1333         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1334         printf("                               on sector boundaries.\n");
1335         printf("      --replay-gain            Calculate ReplayGain values and store them as\n");
1336         printf("                               FLAC tags.  Title gains/peaks will be computed\n");
1337         printf("                               for each file, and an album gain/peak will be\n");
1338         printf("                               computed for all files.  All input files must\n");
1339         printf("                               have the same resolution, sample rate, and\n");
1340         printf("                               number of channels.  The sample rate must be\n");
1341         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1342         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1343         printf("                               few extra bytes in the PADDING block.\n");
1344         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1345         printf("                               a CUESHEET metadata block.  This option may only\n");
1346         printf("                               be used when encoding a single file.  A\n");
1347         printf("                               seekpoint will be added for each index point in\n");
1348         printf("                               the cuesheet to the SEEKTABLE unless\n");
1349         printf("                               --no-cued-seekpoints is specified.\n");
1350         printf("      --picture=SPECIFICATION  Import a picture and store it in a PICTURE block.\n");
1351         printf("                               More than one --picture command can be specified.\n");
1352         printf("                               The SPECIFICATION can either be a simple filename\n");
1353         printf("                               for the picture file, or a complete specification\n");
1354         printf("                               whose parts are separated by | characters.  Some\n");
1355         printf("                               parts may be left empty to invoke default values.\n");
1356         printf("                               Using a filename is shorthand for \"||||FILE\".\n");
1357         printf("                               The SPECIFICATION format is:\n");
1358         printf("         [TYPE]|[MIME-TYPE]|[DESCRIPTION]|[WIDTHxHEIGHTxDEPTH[/COLORS]]|FILE\n");
1359         printf("           TYPE is optional; it is a number from one of:\n");
1360         printf("              0: Other\n");
1361         printf("              1: 32x32 pixels 'file icon' (PNG only)\n");
1362         printf("              2: Other file icon\n");
1363         printf("              3: Cover (front)\n");
1364         printf("              4: Cover (back)\n");
1365         printf("              5: Leaflet page\n");
1366         printf("              6: Media (e.g. label side of CD)\n");
1367         printf("              7: Lead artist/lead performer/soloist\n");
1368         printf("              8: Artist/performer\n");
1369         printf("              9: Conductor\n");
1370         printf("             10: Band/Orchestra\n");
1371         printf("             11: Composer\n");
1372         printf("             12: Lyricist/text writer\n");
1373         printf("             13: Recording Location\n");
1374         printf("             14: During recording\n");
1375         printf("             15: During performance\n");
1376         printf("             16: Movie/video screen capture\n");
1377         printf("             17: A bright coloured fish\n");
1378         printf("             18: Illustration\n");
1379         printf("             19: Band/artist logotype\n");
1380         printf("             20: Publisher/Studio logotype\n");
1381         printf("             The default is 3 (front cover).  There may only be one picture each\n");
1382         printf("             of type 1 and 2 in a file.\n");
1383         printf("           MIME-TYPE is optional; if left blank, it will be detected from the\n");
1384         printf("             file.  For best compatibility with players, use pictures with MIME\n");
1385         printf("             type image/jpeg or image/png.  The MIME type can also be --> to\n");
1386         printf("             mean that FILE is actually a URL to an image, though this use is\n");
1387         printf("             discouraged.\n");
1388         printf("           DESCRIPTION is optional; the default is an empty string\n");
1389         printf("           The next part specfies the resolution and color information.  If\n");
1390         printf("             the MIME-TYPE is image/jpeg, image/png, or image/gif, you can\n");
1391         printf("             usually leave this empty and they can be detected from the file.\n");
1392         printf("             Otherwise, you must specify the width in pixels, height in pixels,\n");
1393         printf("             and color depth in bits-per-pixel.  If the image has indexed colors\n");
1394         printf("             you should also specify the number of colors used.\n");
1395         printf("           FILE is the path to the picture file to be imported, or the URL if\n");
1396         printf("             MIME type is -->\n");
1397         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag.  Make sure to quote the\n");
1398         printf("                               comment if necessary.  This option may appear\n");
1399         printf("                               more than once to add several comments.  NOTE:\n");
1400         printf("                               all tags will be added to all encoded files.\n");
1401         printf("      --tag-from-file=FIELD=FILENAME   Like --tag, except FILENAME is a file\n");
1402         printf("                               whose contents will be read verbatim to set the\n");
1403         printf("                               tag value.  The contents will be converted to\n");
1404         printf("                               UTF-8 from the local charset.  This can be used\n");
1405         printf("                               to store a cuesheet in a tag (e.g.\n");
1406         printf("                               --tag-from-file=\"CUESHEET=image.cue\").  Do not\n");
1407         printf("                               try to store binary data in tag fields!  Use\n");
1408         printf("                               APPLICATION blocks for that.\n");
1409         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1410         printf("       #  : a specific sample number for a seek point\n");
1411         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1412         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1413         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1414         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1415         printf("           ified union of all such values.\n");
1416         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1417         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1418         printf("           input size before starting.\n");
1419         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1420         printf("           either no seek point entered (if the input size is determinable\n");
1421         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1422         printf("           determinable)\n");
1423         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1424         printf("                               block of the given length (in bytes) after the\n");
1425         printf("                               STREAMINFO block.  This is useful if you plan\n");
1426         printf("                               to tag the file later with an APPLICATION\n");
1427         printf("                               block; instead of having to rewrite the entire\n");
1428         printf("                               file later just to insert your block, you can\n");
1429         printf("                               write directly over the PADDING block.  Note\n");
1430         printf("                               that the total length of the PADDING block will\n");
1431         printf("                               be 4 bytes longer than the length given because\n");
1432         printf("                               of the 4 metadata block header bytes.  You can\n");
1433         printf("                               force no PADDING block at all to be written with\n");
1434         printf("                               --no-padding.  The encoder writes a PADDING\n");
1435         printf("                               block of 8192 bytes by default, or 65536 bytes\n");
1436         printf("                               if the input audio is more than 20 minutes long.\n");
1437         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1438         printf("                               1152 for -l 0, else 4096; must be one of 192,\n");
1439         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1440         printf("                               4096 (and 8192 or 16384 if the sample rate is\n");
1441         printf("                               >48kHz) for Subset streams.\n");
1442         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 3\n");
1443         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 3\n");
1444         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1445         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4096 -r 4\n");
1446         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4096 -M -r 4\n");
1447         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4096 -m -r 5\n");
1448         printf("                                     -5 is the default setting\n");
1449         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4096 -m -r 6\n");
1450         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4096 -m -e -r 6\n");
1451         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4096 -m -e -r 6\n");
1452         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1453         printf("                                     (stereo only)\n");
1454         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1455         printf("                                     (stereo only)\n");
1456         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1457         printf("  -A, --apodization=\"function\"       Window audio data with given the function.\n");
1458         printf("                                     The functions are: bartlett, bartlett_hann,\n");
1459         printf("                                     blackman, blackman_harris_4term_92db,\n");
1460         printf("                                     connes, flattop, gauss(STDDEV), hamming,\n");
1461         printf("                                     hann, kaiser_bessel, nuttall, rectangle,\n");
1462         printf("                                     triangle, tukey(P), welch.  More than one\n");
1463         printf("                                     may be specified but encoding time is a\n");
1464         printf("                                     multiple of the number of functions since\n");
1465         printf("                                     they are each tried in turn.  The encoder\n");
1466         printf("                                     chooses suitable defaults in the absence\n");
1467         printf("                                     of any -A options.\n");
1468         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors.\n");
1469         printf("                                     Must be <= 12 for Subset streams if sample\n");
1470         printf("                                     rate is <=48kHz.\n");
1471         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1472         printf("                                     quantization (expensive!); overrides -q;\n");
1473         printf("                                     does nothing if using -l 0\n");
1474         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1475         printf("                                     linear-predictor coefficients; 0 => let\n");
1476         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1477         printf("                                     default is -q 0)\n");
1478         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1479         printf("                                     (# is 0..16; min defaults to 0; the\n");
1480         printf("                                     default is -r 0; above 4 doesn't usually\n");
1481         printf("                                     help much)\n");
1482         printf("format options:\n");
1483         printf("      --endian={big|little}    Set byte order for samples\n");
1484         printf("      --channels=#             Number of channels\n");
1485         printf("      --bps=#                  Number of bits per sample\n");
1486         printf("      --sample-rate=#          Sample rate in Hz\n");
1487         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1488         printf("      --input-size=#           Size of the raw input in bytes.  If you are\n");
1489         printf("                               encoding raw samples from stdin, you must set\n");
1490         printf("                               this option in order to be able to use --skip,\n");
1491         printf("                               --until, --cue-sheet, or other options that need\n");
1492         printf("                               to know the size of the input beforehand.  If\n");
1493         printf("                               the size given is greater than what is found in\n");
1494         printf("                               the input stream, the encoder will complain\n");
1495         printf("                               about an unexpected end-of-file.  If the size\n");
1496         printf("                               given is less, samples will be truncated.\n");
1497         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1498         printf("                               option is not needed if the output filename (as\n");
1499         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1500         printf("                               has no effect when encoding since input AIFF is\n");
1501         printf("                               auto-detected.\n");
1502         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1503         printf("                               decoding) to be treated as raw samples\n");
1504         printf("negative options:\n");
1505         printf("      --no-adaptive-mid-side\n");
1506         printf("      --no-decode-through-errors\n");
1507         printf("      --no-delete-input-file\n");
1508         printf("      --no-exhaustive-model-search\n");
1509         printf("      --no-lax\n");
1510         printf("      --no-mid-side\n");
1511 #if FLAC__HAS_OGG
1512         printf("      --no-ogg\n");
1513 #endif
1514         printf("      --no-padding\n");
1515         printf("      --no-qlp-coeff-prec-search\n");
1516         printf("      --no-residual-gnuplot\n");
1517         printf("      --no-residual-text\n");
1518         printf("      --no-sector-align\n");
1519         printf("      --no-seektable\n");
1520         printf("      --no-silent\n");
1521         printf("      --no-force\n");
1522         printf("      --no-verify\n");
1523         printf("      --no-warnings-as-errors\n");
1524 }
1525
1526 void format_mistake(const char *infilename, FileFormat wrong, FileFormat right)
1527 {
1528         /* WATCHOUT: indexed by FileFormat */
1529         static const char * const ff[] = { "raw", "WAVE", "AIFF", "FLAC", "Ogg FLAC" };
1530         flac__utils_printf(stderr, 1, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, ff[wrong], ff[right]);
1531 }
1532
1533 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1534 {
1535         FILE *encode_infile;
1536         FLAC__byte lookahead[12];
1537         unsigned lookahead_length = 0;
1538         FileFormat fmt = RAW;
1539         FLAC__bool is_aifc = false;
1540         int retval;
1541         off_t infilesize;
1542         encode_options_t common_options;
1543         const char *outfilename = get_encoded_outfilename(infilename); /* the final name of the encoded file */
1544         /* internal_outfilename is the file we will actually write to; it will be a temporary name if infilename==outfilename */
1545         char *internal_outfilename = 0; /* NULL implies 'use outfilename' */
1546
1547         if(0 == outfilename) {
1548                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1549                 return 1;
1550         }
1551
1552         if(0 == strcmp(infilename, "-")) {
1553                 infilesize = (off_t)(-1);
1554                 encode_infile = grabbag__file_get_binary_stdin();
1555         }
1556         else {
1557                 infilesize = grabbag__file_get_filesize(infilename);
1558                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1559                         flac__utils_printf(stderr, 1, "ERROR: can't open input file %s: %s\n", infilename, strerror(errno));
1560                         return 1;
1561                 }
1562         }
1563
1564         if(!option_values.force_raw_format) {
1565                 /* first set format based on name */
1566                 if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".wav"))
1567                         fmt= WAV;
1568                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".aif"))
1569                         fmt= AIF;
1570                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".aiff"))
1571                         fmt= AIF;
1572                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".flac"))
1573                         fmt= FLAC;
1574                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".ogg"))
1575                         fmt= OGGFLAC;
1576
1577                 /* attempt to guess the file type based on the first 12 bytes */
1578                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1579                         if(fmt != RAW) {
1580                                 format_mistake(infilename, fmt, RAW);
1581                                 if(option_values.treat_warnings_as_errors) {
1582                                         conditional_fclose(encode_infile);
1583                                         return 1;
1584                                 }
1585                         }
1586                         fmt= RAW;
1587                 }
1588                 else {
1589                         if(!strncmp((const char *)lookahead, "ID3", 3)) {
1590                                 flac__utils_printf(stderr, 1, "ERROR: input file %s has an ID3v2 tag\n", infilename);
1591                                 return 1;
1592                         }
1593                         else if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1594                                 fmt= WAV;
1595                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1596                                 fmt= AIF;
1597                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFC", 4)) {
1598                                 fmt= AIF;
1599                                 is_aifc = true;
1600                         }
1601                         else if(!memcmp(lookahead, FLAC__STREAM_SYNC_STRING, sizeof(FLAC__STREAM_SYNC_STRING)))
1602                                 fmt= FLAC;
1603                         /* this could be made more accurate by looking at the first packet */
1604                         else if(!memcmp(lookahead, "OggS", 4))
1605                                 fmt= OGGFLAC;
1606                         else {
1607                                 if(fmt != RAW) {
1608                                         format_mistake(infilename, fmt, RAW);
1609                                         if(option_values.treat_warnings_as_errors) {
1610                                                 conditional_fclose(encode_infile);
1611                                                 return 1;
1612                                         }
1613                                 }
1614                                 fmt= RAW;
1615                         }
1616                 }
1617         }
1618
1619         /*
1620          * Error if output file already exists (and -f not used).
1621          * Use grabbag__file_get_filesize() as a cheap way to check.
1622          */
1623         if(!option_values.test_only && !option_values.force_file_overwrite && strcmp(outfilename, "-") && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1624                 if(fmt == FLAC) {
1625                         /* need more detailed error message when re-flac'ing to avoid confusing the user */
1626                         flac__utils_printf(stderr, 1,
1627                                 "ERROR: output file %s already exists.\n\n"
1628                                 "By default flac encodes files to FLAC format; if you meant to decode this file\n"
1629                                 "from FLAC to something else, use -d.  If you meant to re-encode this file from\n"
1630                                 "FLAC to FLAC again, use -f to force writing to the same file, or -o to specify\n"
1631                                 "a different output filename.\n",
1632                                 outfilename
1633                         );
1634                 }
1635                 else if(fmt == OGGFLAC) {
1636                         /* need more detailed error message when re-flac'ing to avoid confusing the user */
1637                         flac__utils_printf(stderr, 1,
1638                                 "ERROR: output file %s already exists.\n\n"
1639                                 "By default 'flac -ogg' encodes files to Ogg FLAC format; if you meant to decode\n"
1640                                 "this file from Ogg FLAC to something else, use -d.  If you meant to re-encode\n"
1641                                 "this file from Ogg FLAC to Ogg FLAC again, use -f to force writing to the same\n"
1642                                 "file, or -o to specify a different output filename.\n",
1643                                 outfilename
1644                         );
1645                 }
1646                 else
1647                         flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1648                 conditional_fclose(encode_infile);
1649                 return 1;
1650         }
1651
1652         if(option_values.format_input_size >= 0) {
1653                 if (fmt != RAW || infilesize >= 0) {
1654                         flac__utils_printf(stderr, 1, "ERROR: can only use --input-size when encoding raw samples from stdin\n");
1655                         conditional_fclose(encode_infile);
1656                         return 1;
1657                 }
1658                 else {
1659                         infilesize = option_values.format_input_size;
1660                 }
1661         }
1662
1663         if(option_values.sector_align && (fmt == FLAC || fmt == OGGFLAC)) {
1664                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input file is FLAC or Ogg FLAC\n");
1665                 conditional_fclose(encode_infile);
1666                 return 1;
1667         }
1668         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1669                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input size is unknown\n");
1670                 conditional_fclose(encode_infile);
1671                 return 1;
1672         }
1673
1674         if(fmt == RAW) {
1675                 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) {
1676                         conditional_fclose(encode_infile);
1677                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1678                 }
1679         }
1680
1681         if(encode_infile == stdin || option_values.force_to_stdout) {
1682                 if(option_values.replay_gain) {
1683                         conditional_fclose(encode_infile);
1684                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1685                 }
1686         }
1687         if(option_values.replay_gain && option_values.use_ogg) {
1688                 conditional_fclose(encode_infile);
1689                 return usage_error("ERROR: --replay-gain cannot be used when encoding to Ogg FLAC yet\n");
1690         }
1691
1692         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative) {
1693                 conditional_fclose(encode_infile);
1694                 return usage_error("ERROR: invalid value for --skip\n");
1695         }
1696
1697         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 */
1698                 conditional_fclose(encode_infile);
1699                 return usage_error("ERROR: invalid value for --until\n");
1700         }
1701         /* if there is no "--until" we want to default to "--until=-0" */
1702         if(0 == option_values.until_specification)
1703                 common_options.until_specification.is_relative = true;
1704
1705         common_options.verify = option_values.verify;
1706         common_options.treat_warnings_as_errors = option_values.treat_warnings_as_errors;
1707 #if FLAC__HAS_OGG
1708         common_options.use_ogg = option_values.use_ogg;
1709         /* set a random serial number if one has not yet been specified */
1710         if(!option_values.has_serial_number) {
1711                 option_values.serial_number = rand();
1712                 option_values.has_serial_number = true;
1713         }
1714         common_options.serial_number = option_values.serial_number++;
1715 #endif
1716         common_options.lax = option_values.lax;
1717         common_options.padding = option_values.padding;
1718         common_options.num_compression_settings = option_values.num_compression_settings;
1719         FLAC__ASSERT(sizeof(common_options.compression_settings) >= sizeof(option_values.compression_settings));
1720         memcpy(common_options.compression_settings, option_values.compression_settings, sizeof(option_values.compression_settings));
1721         common_options.requested_seek_points = option_values.requested_seek_points;
1722         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1723         common_options.cuesheet_filename = option_values.cuesheet_filename;
1724         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1725         common_options.cued_seekpoints = option_values.cued_seekpoints;
1726         common_options.channel_map_none = option_values.channel_map_none;
1727         common_options.is_first_file = is_first_file;
1728         common_options.is_last_file = is_last_file;
1729         common_options.align_reservoir = align_reservoir;
1730         common_options.align_reservoir_samples = &align_reservoir_samples;
1731         common_options.replay_gain = option_values.replay_gain;
1732         common_options.sector_align = option_values.sector_align;
1733         common_options.vorbis_comment = option_values.vorbis_comment;
1734         FLAC__ASSERT(sizeof(common_options.pictures) >= sizeof(option_values.pictures));
1735         memcpy(common_options.pictures, option_values.pictures, sizeof(option_values.pictures));
1736         common_options.num_pictures = option_values.num_pictures;
1737         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1738         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1739         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1740         common_options.debug.do_md5 = option_values.debug.do_md5;
1741
1742         /* if infilename and outfilename point to the same file, we need to write to a temporary file */
1743         if(encode_infile != stdin && grabbag__file_are_same(infilename, outfilename)) {
1744                 static const char *tmp_suffix = ".tmp,fl-ac+en'c";
1745                 /*@@@@ still a remote possibility that a file with this filename exists */
1746                 if(0 == (internal_outfilename = malloc(strlen(outfilename)+strlen(tmp_suffix)+1))) {
1747                         flac__utils_printf(stderr, 1, "ERROR allocating memory for tempfile name\n");
1748                         conditional_fclose(encode_infile);
1749                         return 1;
1750                 }
1751                 strcpy(internal_outfilename, outfilename);
1752                 strcat(internal_outfilename, tmp_suffix);
1753         }
1754
1755         if(fmt == RAW) {
1756                 raw_encode_options_t options;
1757
1758                 options.common = common_options;
1759                 options.is_big_endian = option_values.format_is_big_endian;
1760                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1761                 options.channels = option_values.format_channels;
1762                 options.bps = option_values.format_bps;
1763                 options.sample_rate = option_values.format_sample_rate;
1764
1765                 retval = flac__encode_raw(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1766         }
1767         else if(fmt == FLAC || fmt == OGGFLAC) {
1768                 flac_encode_options_t options;
1769
1770                 options.common = common_options;
1771
1772                 retval = flac__encode_flac(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options, fmt==OGGFLAC);
1773         }
1774         else {
1775                 wav_encode_options_t options;
1776
1777                 options.common = common_options;
1778
1779                 if(fmt == AIF)
1780                         retval = flac__encode_aif(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options, is_aifc);
1781                 else
1782                         retval = flac__encode_wav(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1783         }
1784
1785         if(retval == 0) {
1786                 if(strcmp(outfilename, "-")) {
1787                         if(option_values.replay_gain) {
1788                                 float title_gain, title_peak;
1789                                 const char *error;
1790                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1791                                 if(
1792                                         0 != (error = grabbag__replaygain_store_to_file_reference(internal_outfilename? internal_outfilename : outfilename, /*preserve_modtime=*/true)) ||
1793                                         0 != (error = grabbag__replaygain_store_to_file_title(internal_outfilename? internal_outfilename : outfilename, title_gain, title_peak, /*preserve_modtime=*/true))
1794                                 ) {
1795                                         flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain reference/title tags (%s)\n", outfilename, error);
1796                                 }
1797                         }
1798                         if(strcmp(infilename, "-"))
1799                                 grabbag__file_copy_metadata(infilename, internal_outfilename? internal_outfilename : outfilename);
1800                 }
1801         }
1802
1803         /* rename temporary file if necessary */
1804         if(retval == 0 && internal_outfilename != 0) {
1805                 if(rename(internal_outfilename, outfilename) < 0) {
1806 #if defined _MSC_VER || defined __MINGW32__ || defined __EMX__
1807                         /* on some flavors of windows, rename() will fail if the destination already exists, so we unlink and try again */
1808                         if(unlink(outfilename) < 0) {
1809                                 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);
1810                                 retval = 1;
1811                         }
1812                         else if(rename(internal_outfilename, outfilename) < 0) {
1813                                 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);
1814                                 retval = 1;
1815                         }
1816 #else
1817                         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);
1818                         retval = 1;
1819 #endif
1820                 }
1821         }
1822
1823         /* handle --delete-input-file, but don't want to delete if piping from stdin, or if input filename and output filename are the same */
1824         if(retval == 0 && option_values.delete_input && strcmp(infilename, "-") && internal_outfilename == 0)
1825                 unlink(infilename);
1826
1827         if(internal_outfilename != 0)
1828                 free(internal_outfilename);
1829
1830         return retval;
1831 }
1832
1833 int decode_file(const char *infilename)
1834 {
1835         int retval;
1836         FLAC__bool treat_as_ogg = false;
1837         decode_options_t common_options;
1838         const char *outfilename = get_decoded_outfilename(infilename);
1839
1840         if(0 == outfilename) {
1841                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1842                 return 1;
1843         }
1844
1845         /*
1846          * Error if output file already exists (and -f not used).
1847          * Use grabbag__file_get_filesize() as a cheap way to check.
1848          */
1849         if(!option_values.test_only && !option_values.force_file_overwrite && strcmp(outfilename, "-") && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1850                 flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1851                 return 1;
1852         }
1853
1854         if(!option_values.test_only && !option_values.analyze) {
1855                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1856                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1857         }
1858
1859         if(option_values.use_ogg)
1860                 treat_as_ogg = true;
1861         else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".ogg"))
1862                 treat_as_ogg = true;
1863         else
1864                 treat_as_ogg = false;
1865
1866 #if !FLAC__HAS_OGG
1867         if(treat_as_ogg) {
1868                 flac__utils_printf(stderr, 1, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1869                 return 1;
1870         }
1871 #endif
1872
1873         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1874                 return usage_error("ERROR: invalid value for --skip\n");
1875
1876         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 */
1877                 return usage_error("ERROR: invalid value for --until\n");
1878         /* if there is no "--until" we want to default to "--until=-0" */
1879         if(0 == option_values.until_specification)
1880                 common_options.until_specification.is_relative = true;
1881
1882         if(option_values.cue_specification) {
1883                 if(!flac__utils_parse_cue_specification(option_values.cue_specification, &common_options.cue_specification))
1884                         return usage_error("ERROR: invalid value for --cue\n");
1885                 common_options.has_cue_specification = true;
1886         }
1887         else
1888                 common_options.has_cue_specification = false;
1889
1890         common_options.treat_warnings_as_errors = option_values.treat_warnings_as_errors;
1891         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1892         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1893 #if FLAC__HAS_OGG
1894         common_options.is_ogg = treat_as_ogg;
1895         common_options.use_first_serial_number = !option_values.has_serial_number;
1896         common_options.serial_number = option_values.serial_number;
1897 #endif
1898         common_options.channel_map_none = option_values.channel_map_none;
1899
1900         if(!option_values.force_raw_format) {
1901                 wav_decode_options_t options;
1902
1903                 options.common = common_options;
1904
1905                 if(
1906                         option_values.force_aiff_format ||
1907                         (strlen(outfilename) >= 4 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-4), ".aif")) ||
1908                         (strlen(outfilename) >= 5 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-5), ".aiff"))
1909                 )
1910                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1911                 else
1912                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1913         }
1914         else {
1915                 raw_decode_options_t options;
1916
1917                 options.common = common_options;
1918                 options.is_big_endian = option_values.format_is_big_endian;
1919                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1920
1921                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1922         }
1923
1924         if(retval == 0 && strcmp(infilename, "-")) {
1925                 if(strcmp(outfilename, "-"))
1926                         grabbag__file_copy_metadata(infilename, outfilename);
1927                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1928                         unlink(infilename);
1929         }
1930
1931         return retval;
1932 }
1933
1934 const char *get_encoded_outfilename(const char *infilename)
1935 {
1936         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1937         return get_outfilename(infilename, suffix);
1938 }
1939
1940 const char *get_decoded_outfilename(const char *infilename)
1941 {
1942         const char *suffix;
1943         if(option_values.analyze) {
1944                 suffix = ".ana";
1945         }
1946         else if(option_values.force_raw_format) {
1947                 suffix = ".raw";
1948         }
1949         else if(option_values.force_aiff_format) {
1950                 suffix = ".aiff";
1951         }
1952         else {
1953                 suffix = ".wav";
1954         }
1955         return get_outfilename(infilename, suffix);
1956 }
1957
1958 const char *get_outfilename(const char *infilename, const char *suffix)
1959 {
1960         if(0 == option_values.cmdline_forced_outfilename) {
1961                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1962
1963                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1964                         strcpy(buffer, "-");
1965                 }
1966                 else {
1967                         char *p;
1968                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
1969                                 return 0;
1970                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
1971                                 return 0;
1972                         /* the . must come after any / to avoid problems with, e.g. "some.directory/extensionless-filename" */
1973                         if(0 == (p = strrchr(buffer, '.')) || strchr(p, '/')) {
1974                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1975                                         return 0;
1976                         }
1977                         else {
1978                                 *p = '\0';
1979                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1980                                         return 0;
1981                         }
1982                 }
1983                 return buffer;
1984         }
1985         else
1986                 return option_values.cmdline_forced_outfilename;
1987 }
1988
1989 void die(const char *message)
1990 {
1991         FLAC__ASSERT(0 != message);
1992         flac__utils_printf(stderr, 1, "ERROR: %s\n", message);
1993         exit(1);
1994 }
1995
1996 int conditional_fclose(FILE *f)
1997 {
1998         if(f == 0 || f == stdin || f == stdout)
1999                 return 0;
2000         else
2001                 return fclose(f);
2002 }
2003
2004 char *local_strdup(const char *source)
2005 {
2006         char *ret;
2007         FLAC__ASSERT(0 != source);
2008         if(0 == (ret = strdup(source)))
2009                 die("out of memory during strdup()");
2010         return ret;
2011 }
2012
2013 #ifdef _MSC_VER
2014 /* There's no strtoll() in MSVC6 so we just write a specialized one */
2015 FLAC__int64 local__strtoll(const char *src, char **endptr)
2016 {
2017         FLAC__bool neg = false;
2018         FLAC__int64 ret = 0;
2019         int c;
2020         FLAC__ASSERT(0 != src);
2021         if(*src == '-') {
2022                 neg = true;
2023                 src++;
2024         }
2025         while(0 != (c = *src)) {
2026                 c -= '0';
2027                 if(c >= 0 && c <= 9)
2028                         ret = (ret * 10) + c;
2029                 else
2030                         break;
2031                 src++;
2032         }
2033         if(endptr)
2034                 *endptr = (char*)src;
2035         return neg? -ret : ret;
2036 }
2037 #endif