fix compiler warnings
[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 #include <unistd.h>
32
33 #if !defined _MSC_VER && !defined __MINGW32__
34 /* unlink is in stdio.h in VC++ */
35 #include <unistd.h> /* for unlink() */
36 #endif
37 #include "FLAC/all.h"
38 #include "share/grabbag.h"
39 #include "analyze.h"
40 #include "decode.h"
41 #include "encode.h"
42 #include "local_string_utils.h" /* for flac__strlcat() and flac__strlcpy() */
43 #include "utils.h"
44 #include "vorbiscomment.h"
45
46 #if defined _MSC_VER || defined __MINGW32__ || defined __EMX__
47 #define FLAC__STRCASECMP stricmp
48 #else
49 #define FLAC__STRCASECMP strcasecmp
50 #endif
51
52 #if 0
53 /*[JEC] was:#if HAVE_GETOPT_LONG*/
54 /*[JEC] see flac/include/share/getopt.h as to why the change */
55 #  include <getopt.h>
56 #else
57 #  include "share/getopt.h"
58 #endif
59
60 typedef enum { RAW, WAV, AIF, FLAC, OGGFLAC } FileFormat;
61
62 static int do_it(void);
63
64 static FLAC__bool init_options(void);
65 static int parse_options(int argc, char *argv[]);
66 static int parse_option(int short_option, const char *long_option, const char *option_argument);
67 static void free_options(void);
68 static void add_compression_setting_bool(compression_setting_type_t type, FLAC__bool value);
69 static void add_compression_setting_string(compression_setting_type_t type, const char *value);
70 static void add_compression_setting_unsigned(compression_setting_type_t type, unsigned value);
71
72 static int usage_error(const char *message, ...);
73 static void short_usage(void);
74 static void show_version(void);
75 static void show_help(void);
76 static void show_explain(void);
77 static void format_mistake(const char *infilename, FileFormat wrong, FileFormat right);
78
79 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
80 static int decode_file(const char *infilename);
81
82 static const char *get_encoded_outfilename(const char *infilename);
83 static const char *get_decoded_outfilename(const char *infilename);
84 static const char *get_outfilename(const char *infilename, const char *suffix);
85
86 static void die(const char *message);
87 static int conditional_fclose(FILE *f);
88 static char *local_strdup(const char *source);
89 #ifdef _MSC_VER
90 /* There's no strtoll() in MSVC6 so we just write a specialized one */
91 static FLAC__int64 local__strtoll(const char *src, char **endptr);
92 #endif
93
94
95 /*
96  * share__getopt format struct; note that for long options with no
97  * short option equivalent we just set the 'val' field to 0.
98  */
99 static struct share__option long_options_[] = {
100         /*
101          * general options
102          */
103         { "help"              , share__no_argument, 0, 'h' },
104         { "explain"           , share__no_argument, 0, 'H' },
105         { "version"           , share__no_argument, 0, 'v' },
106         { "decode"            , share__no_argument, 0, 'd' },
107         { "analyze"           , share__no_argument, 0, 'a' },
108         { "test"              , share__no_argument, 0, 't' },
109         { "stdout"            , share__no_argument, 0, 'c' },
110         { "silent"            , share__no_argument, 0, 's' },
111         { "totally-silent"    , share__no_argument, 0, 0 },
112         { "warnings-as-errors", share__no_argument, 0, 'w' },
113         { "force"             , share__no_argument, 0, 'f' },
114         { "delete-input-file" , share__no_argument, 0, 0 },
115         { "output-prefix"     , share__required_argument, 0, 0 },
116         { "output-name"       , share__required_argument, 0, 'o' },
117         { "skip"              , share__required_argument, 0, 0 },
118         { "until"             , share__required_argument, 0, 0 },
119         { "channel-map"       , share__required_argument, 0, 0 }, /* undocumented */
120
121         /*
122          * decoding options
123          */
124         { "decode-through-errors", share__no_argument, 0, 'F' },
125         { "cue"                  , share__required_argument, 0, 0 },
126         { "apply-replaygain-which-is-not-lossless", share__optional_argument, 0, 0 }, /* undocumented */
127
128         /*
129          * encoding options
130          */
131         { "cuesheet"                  , share__required_argument, 0, 0 },
132         { "no-cued-seekpoints"        , share__no_argument, 0, 0 },
133         { "picture"                   , share__required_argument, 0, 0 },
134         { "tag"                       , share__required_argument, 0, 'T' },
135         { "tag-from-file"             , share__required_argument, 0, 0 },
136         { "compression-level-0"       , share__no_argument, 0, '0' },
137         { "compression-level-1"       , share__no_argument, 0, '1' },
138         { "compression-level-2"       , share__no_argument, 0, '2' },
139         { "compression-level-3"       , share__no_argument, 0, '3' },
140         { "compression-level-4"       , share__no_argument, 0, '4' },
141         { "compression-level-5"       , share__no_argument, 0, '5' },
142         { "compression-level-6"       , share__no_argument, 0, '6' },
143         { "compression-level-7"       , share__no_argument, 0, '7' },
144         { "compression-level-8"       , share__no_argument, 0, '8' },
145         { "compression-level-9"       , share__no_argument, 0, '9' },
146         { "best"                      , share__no_argument, 0, '8' },
147         { "fast"                      , share__no_argument, 0, '0' },
148         { "verify"                    , share__no_argument, 0, 'V' },
149         { "force-aiff-format"         , share__no_argument, 0, 0 },
150         { "force-raw-format"          , share__no_argument, 0, 0 },
151         { "lax"                       , share__no_argument, 0, 0 },
152         { "replay-gain"               , share__no_argument, 0, 0 },
153         { "ignore-chunk-sizes"        , share__no_argument, 0, 0 },
154         { "sector-align"              , share__no_argument, 0, 0 },
155         { "seekpoint"                 , share__required_argument, 0, 'S' },
156         { "padding"                   , share__required_argument, 0, 'P' },
157 #if FLAC__HAS_OGG
158         { "ogg"                       , share__no_argument, 0, 0 },
159         { "serial-number"             , share__required_argument, 0, 0 },
160 #endif
161         { "blocksize"                 , share__required_argument, 0, 'b' },
162         { "exhaustive-model-search"   , share__no_argument, 0, 'e' },
163         { "max-lpc-order"             , share__required_argument, 0, 'l' },
164         { "apodization"               , share__required_argument, 0, 'A' },
165         { "mid-side"                  , share__no_argument, 0, 'm' },
166         { "adaptive-mid-side"         , share__no_argument, 0, 'M' },
167         { "qlp-coeff-precision-search", share__no_argument, 0, 'p' },
168         { "qlp-coeff-precision"       , share__required_argument, 0, 'q' },
169         { "rice-partition-order"      , share__required_argument, 0, 'r' },
170         { "endian"                    , share__required_argument, 0, 0 },
171         { "channels"                  , share__required_argument, 0, 0 },
172         { "bps"                       , share__required_argument, 0, 0 },
173         { "sample-rate"               , share__required_argument, 0, 0 },
174         { "sign"                      , share__required_argument, 0, 0 },
175         { "input-size"                , share__required_argument, 0, 0 },
176
177         /*
178          * analysis options
179          */
180         { "residual-gnuplot", share__no_argument, 0, 0 },
181         { "residual-text", share__no_argument, 0, 0 },
182
183         /*
184          * negatives
185          */
186         { "no-decode-through-errors"  , share__no_argument, 0, 0 },
187         { "no-silent"                 , share__no_argument, 0, 0 },
188         { "no-force"                  , share__no_argument, 0, 0 },
189         { "no-seektable"              , share__no_argument, 0, 0 },
190         { "no-delete-input-file"      , share__no_argument, 0, 0 },
191         { "no-replay-gain"            , share__no_argument, 0, 0 },
192         { "no-ignore-chunk-sizes"     , share__no_argument, 0, 0 },
193         { "no-sector-align"           , share__no_argument, 0, 0 },
194         { "no-utf8-convert"           , share__no_argument, 0, 0 },
195         { "no-lax"                    , share__no_argument, 0, 0 },
196 #if FLAC__HAS_OGG
197         { "no-ogg"                    , share__no_argument, 0, 0 },
198 #endif
199         { "no-exhaustive-model-search", share__no_argument, 0, 0 },
200         { "no-mid-side"               , share__no_argument, 0, 0 },
201         { "no-adaptive-mid-side"      , share__no_argument, 0, 0 },
202         { "no-qlp-coeff-prec-search"  , share__no_argument, 0, 0 },
203         { "no-padding"                , share__no_argument, 0, 0 },
204         { "no-verify"                 , share__no_argument, 0, 0 },
205         { "no-warnings-as-errors"     , share__no_argument, 0, 0 },
206         { "no-residual-gnuplot"       , share__no_argument, 0, 0 },
207         { "no-residual-text"          , share__no_argument, 0, 0 },
208         /*
209          * undocumented debugging options for the test suite
210          */
211         { "disable-constant-subframes", share__no_argument, 0, 0 },
212         { "disable-fixed-subframes"   , share__no_argument, 0, 0 },
213         { "disable-verbatim-subframes", share__no_argument, 0, 0 },
214         { "no-md5-sum"                , share__no_argument, 0, 0 },
215
216         {0, 0, 0, 0}
217 };
218
219
220 /*
221  * global to hold command-line option values
222  */
223
224 static struct {
225         FLAC__bool show_help;
226         FLAC__bool show_explain;
227         FLAC__bool show_version;
228         FLAC__bool mode_decode;
229         FLAC__bool verify;
230         FLAC__bool treat_warnings_as_errors;
231         FLAC__bool force_file_overwrite;
232         FLAC__bool continue_through_decode_errors;
233         replaygain_synthesis_spec_t replaygain_synthesis_spec;
234         FLAC__bool lax;
235         FLAC__bool test_only;
236         FLAC__bool analyze;
237         FLAC__bool use_ogg;
238         FLAC__bool has_serial_number; /* true iff --serial-number was used */
239         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
240         FLAC__bool force_to_stdout;
241         FLAC__bool force_aiff_format;
242         FLAC__bool force_raw_format;
243         FLAC__bool delete_input;
244         FLAC__bool replay_gain;
245         FLAC__bool ignore_chunk_sizes;
246         FLAC__bool sector_align;
247         FLAC__bool utf8_convert; /* true by default, to convert tag strings from locale to utf-8, false if --no-utf8-convert used */
248         const char *cmdline_forced_outfilename;
249         const char *output_prefix;
250         analysis_options aopts;
251         int padding; /* -1 => no -P options were given, 0 => -P- was given, else -P value */
252         size_t num_compression_settings;
253         compression_setting_t compression_settings[64]; /* bad MAGIC NUMBER but buffer overflow is checked */
254         const char *skip_specification;
255         const char *until_specification;
256         const char *cue_specification;
257         int format_is_big_endian;
258         int format_is_unsigned_samples;
259         int format_channels;
260         int format_bps;
261         int format_sample_rate;
262         off_t format_input_size;
263         char requested_seek_points[5000]; /* bad MAGIC NUMBER but buffer overflow is checked */
264         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
265         const char *cuesheet_filename;
266         FLAC__bool cued_seekpoints;
267         FLAC__bool channel_map_none; /* --channel-map=none specified, eventually will expand to take actual channel map */
268
269         unsigned num_files;
270         char **filenames;
271
272         FLAC__StreamMetadata *vorbis_comment;
273         FLAC__StreamMetadata *pictures[64];
274         unsigned num_pictures;
275
276         struct {
277                 FLAC__bool disable_constant_subframes;
278                 FLAC__bool disable_fixed_subframes;
279                 FLAC__bool disable_verbatim_subframes;
280                 FLAC__bool do_md5;
281         } debug;
282 } option_values;
283
284
285 /*
286  * miscellaneous globals
287  */
288
289 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
290 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
291 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
292
293
294 int main(int argc, char *argv[])
295 {
296         int retval = 0;
297
298 #ifdef __EMX__
299         _response(&argc, &argv);
300         _wildcard(&argc, &argv);
301 #endif
302
303         srand((unsigned)time(0));
304         setlocale(LC_ALL, "");
305         if(!init_options()) {
306                 flac__utils_printf(stderr, 1, "ERROR: allocating memory\n");
307                 retval = 1;
308         }
309         else {
310                 if((retval = parse_options(argc, argv)) == 0)
311                         retval = do_it();
312         }
313
314         free_options();
315
316         return retval;
317 }
318
319 int do_it(void)
320 {
321         int retval = 0;
322
323         if(option_values.show_version) {
324                 show_version();
325                 return 0;
326         }
327         else if(option_values.show_explain) {
328                 show_explain();
329                 return 0;
330         }
331         else if(option_values.show_help) {
332                 show_help();
333                 return 0;
334         }
335         else {
336                 if(option_values.num_files == 0) {
337                         if(flac__utils_verbosity_ >= 1)
338                                 short_usage();
339                         return 0;
340                 }
341
342                 /*
343                  * tweak options; validate the values
344                  */
345                 if(!option_values.mode_decode) {
346                         if(0 != option_values.cue_specification)
347                                 return usage_error("ERROR: --cue is not allowed in test mode\n");
348                 }
349                 else {
350                         if(option_values.test_only) {
351                                 if(0 != option_values.skip_specification)
352                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
353                                 if(0 != option_values.until_specification)
354                                         return usage_error("ERROR: --until is not allowed in test mode\n");
355                                 if(0 != option_values.cue_specification)
356                                         return usage_error("ERROR: --cue is not allowed in test mode\n");
357                                 if(0 != option_values.analyze)
358                                         return usage_error("ERROR: analysis mode (-a/--analyze) and test mode (-t/--test) cannot be used together\n");
359                         }
360                 }
361
362                 if(0 != option_values.cue_specification && (0 != option_values.skip_specification || 0 != option_values.until_specification))
363                         return usage_error("ERROR: --cue may not be combined with --skip or --until\n");
364
365                 if(option_values.format_channels >= 0) {
366                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
367                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
368                 }
369                 if(option_values.format_bps >= 0) {
370                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
371                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
372                 }
373                 if(option_values.format_sample_rate >= 0) {
374                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
375                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
376                 }
377                 if(option_values.force_raw_format && option_values.force_aiff_format)
378                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
379                 if(option_values.mode_decode) {
380                         if(!option_values.force_raw_format) {
381                                 if(option_values.format_is_big_endian >= 0)
382                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
383                                 if(option_values.format_is_unsigned_samples >= 0)
384                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
385                         }
386                         if(option_values.format_channels >= 0)
387                                 return usage_error("ERROR: --channels not allowed with --decode\n");
388                         if(option_values.format_bps >= 0)
389                                 return usage_error("ERROR: --bps not allowed with --decode\n");
390                         if(option_values.format_sample_rate >= 0)
391                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
392                 }
393
394                 if(option_values.ignore_chunk_sizes) {
395                         if(option_values.mode_decode)
396                                 return usage_error("ERROR: --ignore-chunk-sizes only allowed for encoding\n");
397                         if(0 != option_values.sector_align)
398                                 return usage_error("ERROR: --ignore-chunk-sizes not allowed with --sector-align\n");
399                         if(0 != option_values.until_specification)
400                                 return usage_error("ERROR: --ignore-chunk-sizes not allowed with --until\n");
401                         if(0 != option_values.cue_specification)
402                                 return usage_error("ERROR: --ignore-chunk-sizes not allowed with --cue\n");
403                         if(0 != option_values.cuesheet_filename)
404                                 return usage_error("ERROR: --ignore-chunk-sizes not allowed with --cuesheet\n");
405                 }
406                 if(option_values.sector_align) {
407                         if(option_values.mode_decode)
408                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
409                         if(0 != option_values.skip_specification)
410                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
411                         if(0 != option_values.until_specification)
412                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
413                         if(0 != option_values.cue_specification)
414                                 return usage_error("ERROR: --sector-align not allowed with --cue\n");
415                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
416                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
417                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
418                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
419                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
420                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
421                 }
422                 if(option_values.replay_gain) {
423                         if(option_values.force_to_stdout)
424                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
425                         if(option_values.mode_decode)
426                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
427                         if(option_values.format_channels > 2)
428                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
429                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
430                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
431                         /*
432                          * We want to reserve padding space for the ReplayGain
433                          * tags that we will set later, to avoid rewriting the
434                          * whole file.
435                          */
436                         if(
437                                 (option_values.padding >= 0 && option_values.padding < GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED) ||
438                                 (option_values.padding < 0 && FLAC_ENCODE__DEFAULT_PADDING < GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED)
439                         ) {
440                                 flac__utils_printf(stderr, 1, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
441                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
442                         }
443                         else {
444                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
445                         }
446                 }
447                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
448                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
449                 }
450                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
451                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
452                 }
453                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
454                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
455                 }
456         }
457
458         flac__utils_printf(stderr, 2, "\n");
459         flac__utils_printf(stderr, 2, "flac %s, Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson\n", FLAC__VERSION_STRING);
460         flac__utils_printf(stderr, 2, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
461         flac__utils_printf(stderr, 2, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
462
463         if(option_values.mode_decode) {
464                 FLAC__bool first = true;
465
466                 if(option_values.num_files == 0) {
467                         retval = decode_file("-");
468                 }
469                 else {
470                         unsigned i;
471                         if(option_values.num_files > 1)
472                                 option_values.cmdline_forced_outfilename = 0;
473                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
474                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
475                                         continue;
476                                 retval |= decode_file(option_values.filenames[i]);
477                                 first = false;
478                         }
479                 }
480         }
481         else { /* encode */
482                 FLAC__bool first = true;
483
484                 if(option_values.ignore_chunk_sizes)
485                         flac__utils_printf(stderr, 1, "INFO: Make sure you know what you're doing when using --ignore-chunk-sizes.\n      Improper use can cause flac to encode non-audio data as audio.\n");
486
487                 if(option_values.num_files == 0) {
488                         retval = encode_file("-", first, true);
489                 }
490                 else {
491                         unsigned i;
492                         if(option_values.num_files > 1)
493                                 option_values.cmdline_forced_outfilename = 0;
494                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
495                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
496                                         continue;
497                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
498                                 first = false;
499                         }
500                         if(option_values.replay_gain && retval == 0) {
501                                 float album_gain, album_peak;
502                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
503                                 for(i = 0; i < option_values.num_files; i++) {
504                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
505                                         if(0 == outfilename) {
506                                                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", option_values.filenames[i]);
507                                                 return 1;
508                                         }
509                                         if(0 == strcmp(option_values.filenames[i], "-")) {
510                                                 FLAC__ASSERT(0);
511                                                 /* double protection */
512                                                 flac__utils_printf(stderr, 1, "internal error\n");
513                                                 return 2;
514                                         }
515                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
516                                                 flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain album tags (%s)\n", outfilename, error);
517                                                 retval = 1;
518                                         }
519                                 }
520                         }
521                 }
522         }
523
524         return retval;
525 }
526
527 FLAC__bool init_options(void)
528 {
529         option_values.show_help = false;
530         option_values.show_explain = false;
531         option_values.mode_decode = false;
532         option_values.verify = false;
533         option_values.treat_warnings_as_errors = false;
534         option_values.force_file_overwrite = false;
535         option_values.continue_through_decode_errors = false;
536         option_values.replaygain_synthesis_spec.apply = false;
537         option_values.replaygain_synthesis_spec.use_album_gain = true;
538         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
539         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
540         option_values.replaygain_synthesis_spec.preamp = 0.0;
541         option_values.lax = false;
542         option_values.test_only = false;
543         option_values.analyze = false;
544         option_values.use_ogg = false;
545         option_values.has_serial_number = false;
546         option_values.serial_number = 0;
547         option_values.force_to_stdout = false;
548         option_values.force_aiff_format = false;
549         option_values.force_raw_format = false;
550         option_values.delete_input = false;
551         option_values.replay_gain = false;
552         option_values.ignore_chunk_sizes = false;
553         option_values.sector_align = false;
554         option_values.utf8_convert = true;
555         option_values.cmdline_forced_outfilename = 0;
556         option_values.output_prefix = 0;
557         option_values.aopts.do_residual_text = false;
558         option_values.aopts.do_residual_gnuplot = false;
559         option_values.padding = -1;
560         option_values.num_compression_settings = 1;
561         option_values.compression_settings[0].type = CST_COMPRESSION_LEVEL;
562         option_values.compression_settings[0].value.t_unsigned = 5;
563         option_values.skip_specification = 0;
564         option_values.until_specification = 0;
565         option_values.cue_specification = 0;
566         option_values.format_is_big_endian = -1;
567         option_values.format_is_unsigned_samples = -1;
568         option_values.format_channels = -1;
569         option_values.format_bps = -1;
570         option_values.format_sample_rate = -1;
571         option_values.format_input_size = (off_t)(-1);
572         option_values.requested_seek_points[0] = '\0';
573         option_values.num_requested_seek_points = -1;
574         option_values.cuesheet_filename = 0;
575         option_values.cued_seekpoints = true;
576         option_values.channel_map_none = false;
577
578         option_values.num_files = 0;
579         option_values.filenames = 0;
580
581         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
582                 return false;
583         option_values.num_pictures = 0;
584
585         option_values.debug.disable_constant_subframes = false;
586         option_values.debug.disable_fixed_subframes = false;
587         option_values.debug.disable_verbatim_subframes = false;
588         option_values.debug.do_md5 = true;
589
590         return true;
591 }
592
593 int parse_options(int argc, char *argv[])
594 {
595         int short_option;
596         int option_index = 1;
597         FLAC__bool had_error = false;
598         const char *short_opts = "0123456789aA:b:cdefFhHl:mMo:pP:q:r:sS:tT:vVw";
599
600         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
601                 switch (short_option) {
602                         case 0: /* long option with no equivalent short option */
603                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
604                                 break;
605                         case '?':
606                         case ':':
607                                 had_error = true;
608                                 break;
609                         default: /* short option */
610                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
611                                 break;
612                 }
613         }
614
615         if(had_error) {
616                 return 1;
617         }
618
619         FLAC__ASSERT(share__optind <= argc);
620
621         option_values.num_files = argc - share__optind;
622
623         if(option_values.num_files > 0) {
624                 unsigned i = 0;
625                 if(0 == (option_values.filenames = (char**)malloc(sizeof(char*) * option_values.num_files)))
626                         die("out of memory allocating space for file names list");
627                 while(share__optind < argc)
628                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
629         }
630
631         return 0;
632 }
633
634 int parse_option(int short_option, const char *long_option, const char *option_argument)
635 {
636         const char *violation;
637         char *p;
638         int i;
639
640         if(short_option == 0) {
641                 FLAC__ASSERT(0 != long_option);
642                 if(0 == strcmp(long_option, "totally-silent")) {
643                         flac__utils_verbosity_ = 0;
644                 }
645                 else if(0 == strcmp(long_option, "delete-input-file")) {
646                         option_values.delete_input = true;
647                 }
648                 else if(0 == strcmp(long_option, "output-prefix")) {
649                         FLAC__ASSERT(0 != option_argument);
650                         option_values.output_prefix = option_argument;
651                 }
652                 else if(0 == strcmp(long_option, "skip")) {
653                         FLAC__ASSERT(0 != option_argument);
654                         option_values.skip_specification = option_argument;
655                 }
656                 else if(0 == strcmp(long_option, "until")) {
657                         FLAC__ASSERT(0 != option_argument);
658                         option_values.until_specification = option_argument;
659                 }
660                 else if(0 == strcmp(long_option, "input-size")) {
661                         FLAC__ASSERT(0 != option_argument);
662                         {
663                                 char *end;
664 #ifdef _MSC_VER
665                                 FLAC__int64 i;
666                                 i = local__strtoll(option_argument, &end);
667 #else
668                                 long long i;
669                                 i = strtoll(option_argument, &end, 10);
670 #endif
671                                 if(0 == strlen(option_argument) || *end)
672                                         return usage_error("ERROR: --%s must be a number\n", long_option);
673                                 option_values.format_input_size = (off_t)i;
674                                 if(option_values.format_input_size != i) /* check if off_t is smaller than long long */
675                                         return usage_error("ERROR: --%s too large; this build of flac does not support filesizes over 2GB\n", long_option);
676                                 if(option_values.format_input_size <= 0)
677                                         return usage_error("ERROR: --%s must be > 0\n", long_option);
678                         }
679                 }
680                 else if(0 == strcmp(long_option, "cue")) {
681                         FLAC__ASSERT(0 != option_argument);
682                         option_values.cue_specification = option_argument;
683                 }
684                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
685                         option_values.replaygain_synthesis_spec.apply = true;
686                         if (0 != option_argument) {
687                                 char *p;
688                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
689                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
690                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
691                                 for ( ; *p; p++) {
692                                         if (*p == 'a')
693                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
694                                         else if (*p == 't')
695                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
696                                         else if (*p == 'l')
697                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
698                                         else if (*p == 'L')
699                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
700                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
701                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
702                                                 p++;
703                                         }
704                                         else
705                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
706                                 }
707                         }
708                 }
709                 else if(0 == strcmp(long_option, "channel-map")) {
710                         if (0 == option_argument || strcmp(option_argument, "none"))
711                                 return usage_error("ERROR: only --channel-map=none currently supported\n");
712                         option_values.channel_map_none = true;
713                 }
714                 else if(0 == strcmp(long_option, "cuesheet")) {
715                         FLAC__ASSERT(0 != option_argument);
716                         option_values.cuesheet_filename = option_argument;
717                 }
718                 else if(0 == strcmp(long_option, "picture")) {
719                         const unsigned max_pictures = sizeof(option_values.pictures)/sizeof(option_values.pictures[0]);
720                         FLAC__ASSERT(0 != option_argument);
721                         if(option_values.num_pictures >= max_pictures)
722                                 return usage_error("ERROR: too many --picture arguments, only %u allowed\n", max_pictures);
723                         if(0 == (option_values.pictures[option_values.num_pictures] = grabbag__picture_parse_specification(option_argument, &violation)))
724                                 return usage_error("ERROR: (--picture) %s\n", violation);
725                         option_values.num_pictures++;
726                 }
727                 else if(0 == strcmp(long_option, "tag-from-file")) {
728                         FLAC__ASSERT(0 != option_argument);
729                         if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/true, /*raw=*/!option_values.utf8_convert, &violation))
730                                 return usage_error("ERROR: (--tag-from-file) %s\n", violation);
731                 }
732                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
733                         option_values.cued_seekpoints = false;
734                 }
735                 else if(0 == strcmp(long_option, "force-aiff-format")) {
736                         option_values.force_aiff_format = true;
737                 }
738                 else if(0 == strcmp(long_option, "force-raw-format")) {
739                         option_values.force_raw_format = true;
740                 }
741                 else if(0 == strcmp(long_option, "lax")) {
742                         option_values.lax = true;
743                 }
744                 else if(0 == strcmp(long_option, "replay-gain")) {
745                         option_values.replay_gain = true;
746                 }
747                 else if(0 == strcmp(long_option, "ignore-chunk-sizes")) {
748                         option_values.ignore_chunk_sizes = true;
749                 }
750                 else if(0 == strcmp(long_option, "sector-align")) {
751                         option_values.sector_align = true;
752                 }
753 #if FLAC__HAS_OGG
754                 else if(0 == strcmp(long_option, "ogg")) {
755                         option_values.use_ogg = true;
756                 }
757                 else if(0 == strcmp(long_option, "serial-number")) {
758                         option_values.has_serial_number = true;
759                         option_values.serial_number = atol(option_argument);
760                 }
761 #endif
762                 else if(0 == strcmp(long_option, "endian")) {
763                         FLAC__ASSERT(0 != option_argument);
764                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
765                                 option_values.format_is_big_endian = true;
766                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
767                                 option_values.format_is_big_endian = false;
768                         else
769                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
770                 }
771                 else if(0 == strcmp(long_option, "channels")) {
772                         FLAC__ASSERT(0 != option_argument);
773                         option_values.format_channels = atoi(option_argument);
774                 }
775                 else if(0 == strcmp(long_option, "bps")) {
776                         FLAC__ASSERT(0 != option_argument);
777                         option_values.format_bps = atoi(option_argument);
778                 }
779                 else if(0 == strcmp(long_option, "sample-rate")) {
780                         FLAC__ASSERT(0 != option_argument);
781                         option_values.format_sample_rate = atoi(option_argument);
782                 }
783                 else if(0 == strcmp(long_option, "sign")) {
784                         FLAC__ASSERT(0 != option_argument);
785                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
786                                 option_values.format_is_unsigned_samples = false;
787                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
788                                 option_values.format_is_unsigned_samples = true;
789                         else
790                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
791                 }
792                 else if(0 == strcmp(long_option, "residual-gnuplot")) {
793                         option_values.aopts.do_residual_gnuplot = true;
794                 }
795                 else if(0 == strcmp(long_option, "residual-text")) {
796                         option_values.aopts.do_residual_text = true;
797                 }
798                 /*
799                  * negatives
800                  */
801                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
802                         option_values.continue_through_decode_errors = false;
803                 }
804                 else if(0 == strcmp(long_option, "no-silent")) {
805                         flac__utils_verbosity_ = 2;
806                 }
807                 else if(0 == strcmp(long_option, "no-force")) {
808                         option_values.force_file_overwrite = false;
809                 }
810                 else if(0 == strcmp(long_option, "no-seektable")) {
811                         option_values.num_requested_seek_points = 0;
812                         option_values.requested_seek_points[0] = '\0';
813                 }
814                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
815                         option_values.delete_input = false;
816                 }
817                 else if(0 == strcmp(long_option, "no-replay-gain")) {
818                         option_values.replay_gain = false;
819                 }
820                 else if(0 == strcmp(long_option, "no-ignore-chunk-sizes")) {
821                         option_values.ignore_chunk_sizes = false;
822                 }
823                 else if(0 == strcmp(long_option, "no-sector-align")) {
824                         option_values.sector_align = false;
825                 }
826                 else if(0 == strcmp(long_option, "no-utf8-convert")) {
827                         option_values.utf8_convert = false;
828                 }
829                 else if(0 == strcmp(long_option, "no-lax")) {
830                         option_values.lax = false;
831                 }
832 #if FLAC__HAS_OGG
833                 else if(0 == strcmp(long_option, "no-ogg")) {
834                         option_values.use_ogg = false;
835                 }
836 #endif
837                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
838                         add_compression_setting_bool(CST_DO_EXHAUSTIVE_MODEL_SEARCH, false);
839                 }
840                 else if(0 == strcmp(long_option, "no-mid-side")) {
841                         add_compression_setting_bool(CST_DO_MID_SIDE, false);
842                         add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
843                 }
844                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
845                         add_compression_setting_bool(CST_DO_MID_SIDE, false);
846                         add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
847                 }
848                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
849                         add_compression_setting_bool(CST_DO_QLP_COEFF_PREC_SEARCH, false);
850                 }
851                 else if(0 == strcmp(long_option, "no-padding")) {
852                         option_values.padding = 0;
853                 }
854                 else if(0 == strcmp(long_option, "no-verify")) {
855                         option_values.verify = false;
856                 }
857                 else if(0 == strcmp(long_option, "no-warnings-as-errors")) {
858                         option_values.treat_warnings_as_errors = false;
859                 }
860                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
861                         option_values.aopts.do_residual_gnuplot = false;
862                 }
863                 else if(0 == strcmp(long_option, "no-residual-text")) {
864                         option_values.aopts.do_residual_text = false;
865                 }
866                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
867                         option_values.debug.disable_constant_subframes = true;
868                 }
869                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
870                         option_values.debug.disable_fixed_subframes = true;
871                 }
872                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
873                         option_values.debug.disable_verbatim_subframes = true;
874                 }
875                 else if(0 == strcmp(long_option, "no-md5-sum")) {
876                         option_values.debug.do_md5 = false;
877                 }
878         }
879         else {
880                 switch(short_option) {
881                         case 'h':
882                                 option_values.show_help = true;
883                                 break;
884                         case 'H':
885                                 option_values.show_explain = true;
886                                 break;
887                         case 'v':
888                                 option_values.show_version = true;
889                                 break;
890                         case 'd':
891                                 option_values.mode_decode = true;
892                                 break;
893                         case 'a':
894                                 option_values.mode_decode = true;
895                                 option_values.analyze = true;
896                                 break;
897                         case 't':
898                                 option_values.mode_decode = true;
899                                 option_values.test_only = true;
900                                 break;
901                         case 'c':
902                                 option_values.force_to_stdout = true;
903                                 break;
904                         case 's':
905                                 flac__utils_verbosity_ = 1;
906                                 break;
907                         case 'f':
908                                 option_values.force_file_overwrite = true;
909                                 break;
910                         case 'o':
911                                 FLAC__ASSERT(0 != option_argument);
912                                 option_values.cmdline_forced_outfilename = option_argument;
913                                 break;
914                         case 'F':
915                                 option_values.continue_through_decode_errors = true;
916                                 break;
917                         case 'T':
918                                 FLAC__ASSERT(0 != option_argument);
919                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, /*value_from_file=*/false, /*raw=*/!option_values.utf8_convert, &violation))
920                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
921                                 break;
922                         case '0':
923                         case '1':
924                         case '2':
925                         case '3':
926                         case '4':
927                         case '5':
928                         case '6':
929                         case '7':
930                         case '8':
931                                 add_compression_setting_unsigned(CST_COMPRESSION_LEVEL, short_option-'0');
932                                 break;
933                         case '9':
934                                 return usage_error("ERROR: compression level '9' is reserved\n");
935                         case 'V':
936                                 option_values.verify = true;
937                                 break;
938                         case 'w':
939                                 option_values.treat_warnings_as_errors = true;
940                                 break;
941                         case 'S':
942                                 FLAC__ASSERT(0 != option_argument);
943                                 if(0 == strcmp(option_argument, "-")) {
944                                         option_values.num_requested_seek_points = 0;
945                                         option_values.requested_seek_points[0] = '\0';
946                                 }
947                                 else {
948                                         if(option_values.num_requested_seek_points < 0)
949                                                 option_values.num_requested_seek_points = 0;
950                                         option_values.num_requested_seek_points++;
951                                         if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
952                                                 return usage_error("ERROR: too many seekpoints requested\n");
953                                         }
954                                         else {
955                                                 strcat(option_values.requested_seek_points, option_argument);
956                                                 strcat(option_values.requested_seek_points, ";");
957                                         }
958                                 }
959                                 break;
960                         case 'P':
961                                 FLAC__ASSERT(0 != option_argument);
962                                 option_values.padding = atoi(option_argument);
963                                 if(option_values.padding < 0)
964                                         return usage_error("ERROR: argument to -%c must be >= 0; for no padding use -%c-\n", short_option, short_option);
965                                 break;
966                         case 'b':
967                                 FLAC__ASSERT(0 != option_argument);
968                                 i = atoi(option_argument);
969                                 if((i < (int)FLAC__MIN_BLOCK_SIZE || i > (int)FLAC__MAX_BLOCK_SIZE))
970                                         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);
971                                 add_compression_setting_unsigned(CST_BLOCKSIZE, (unsigned)i);
972                                 break;
973                         case 'e':
974                                 add_compression_setting_bool(CST_DO_EXHAUSTIVE_MODEL_SEARCH, true);
975                                 break;
976                         case 'E':
977                                 add_compression_setting_bool(CST_DO_ESCAPE_CODING, true);
978                                 break;
979                         case 'l':
980                                 FLAC__ASSERT(0 != option_argument);
981                                 i = atoi(option_argument);
982                                 if((i < 0 || i > (int)FLAC__MAX_LPC_ORDER))
983                                         return usage_error("ERROR: invalid LPC order (-%c) '%d', must be >= %u and <= %u\n", short_option, i, 0, FLAC__MAX_LPC_ORDER);
984                                 add_compression_setting_unsigned(CST_MAX_LPC_ORDER, (unsigned)i);
985                                 break;
986                         case 'A':
987                                 FLAC__ASSERT(0 != option_argument);
988                                 add_compression_setting_string(CST_APODIZATION, option_argument);
989                                 break;
990                         case 'm':
991                                 add_compression_setting_bool(CST_DO_MID_SIDE, true);
992                                 add_compression_setting_bool(CST_LOOSE_MID_SIDE, false);
993                                 break;
994                         case 'M':
995                                 add_compression_setting_bool(CST_DO_MID_SIDE, true);
996                                 add_compression_setting_bool(CST_LOOSE_MID_SIDE, true);
997                                 break;
998                         case 'p':
999                                 add_compression_setting_bool(CST_DO_QLP_COEFF_PREC_SEARCH, true);
1000                                 break;
1001                         case 'q':
1002                                 FLAC__ASSERT(0 != option_argument);
1003                                 i = atoi(option_argument);
1004                                 if(i < 0 || (i > 0 && (i < (int)FLAC__MIN_QLP_COEFF_PRECISION || i > (int)FLAC__MAX_QLP_COEFF_PRECISION)))
1005                                         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);
1006                                 add_compression_setting_unsigned(CST_QLP_COEFF_PRECISION, (unsigned)i);
1007                                 break;
1008                         case 'r':
1009                                 FLAC__ASSERT(0 != option_argument);
1010                                 p = strchr(option_argument, ',');
1011                                 if(0 == p) {
1012                                         add_compression_setting_unsigned(CST_MIN_RESIDUAL_PARTITION_ORDER, 0);
1013                                         i = atoi(option_argument);
1014                                         if(i < 0)
1015                                                 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);
1016                                         add_compression_setting_unsigned(CST_MAX_RESIDUAL_PARTITION_ORDER, (unsigned)i);
1017                                 }
1018                                 else {
1019                                         i = atoi(option_argument);
1020                                         if(i < 0)
1021                                                 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);
1022                                         add_compression_setting_unsigned(CST_MIN_RESIDUAL_PARTITION_ORDER, (unsigned)i);
1023                                         i = atoi(++p);
1024                                         if(i < 0)
1025                                                 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);
1026                                         add_compression_setting_unsigned(CST_MAX_RESIDUAL_PARTITION_ORDER, (unsigned)i);
1027                                 }
1028                                 break;
1029                         case 'R':
1030                                 i = atoi(option_argument);
1031                                 if(i < 0)
1032                                         return usage_error("ERROR: invalid value '%d' for Rice parameter search distance (-%c), must be >= 0\n", i, short_option);
1033                                 add_compression_setting_unsigned(CST_RICE_PARAMETER_SEARCH_DIST, (unsigned)i);
1034                                 break;
1035                         default:
1036                                 FLAC__ASSERT(0);
1037                 }
1038         }
1039
1040         return 0;
1041 }
1042
1043 void free_options(void)
1044 {
1045         unsigned i;
1046         if(0 != option_values.filenames) {
1047                 for(i = 0; i < option_values.num_files; i++) {
1048                         if(0 != option_values.filenames[i])
1049                                 free(option_values.filenames[i]);
1050                 }
1051                 free(option_values.filenames);
1052         }
1053         if(0 != option_values.vorbis_comment)
1054                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1055         for(i = 0; i < option_values.num_pictures; i++)
1056                 FLAC__metadata_object_delete(option_values.pictures[i]);
1057 }
1058
1059 void add_compression_setting_bool(compression_setting_type_t type, FLAC__bool value)
1060 {
1061         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1062                 die("too many compression settings");
1063         option_values.compression_settings[option_values.num_compression_settings].type = type;
1064         option_values.compression_settings[option_values.num_compression_settings].value.t_bool = value;
1065         option_values.num_compression_settings++;
1066 }
1067
1068 void add_compression_setting_string(compression_setting_type_t type, const char *value)
1069 {
1070         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1071                 die("too many compression settings");
1072         option_values.compression_settings[option_values.num_compression_settings].type = type;
1073         option_values.compression_settings[option_values.num_compression_settings].value.t_string = value;
1074         option_values.num_compression_settings++;
1075 }
1076
1077 void add_compression_setting_unsigned(compression_setting_type_t type, unsigned value)
1078 {
1079         if(option_values.num_compression_settings >= sizeof(option_values.compression_settings)/sizeof(option_values.compression_settings[0]))
1080                 die("too many compression settings");
1081         option_values.compression_settings[option_values.num_compression_settings].type = type;
1082         option_values.compression_settings[option_values.num_compression_settings].value.t_unsigned = value;
1083         option_values.num_compression_settings++;
1084 }
1085
1086 int usage_error(const char *message, ...)
1087 {
1088         if(flac__utils_verbosity_ >= 1) {
1089                 va_list args;
1090
1091                 FLAC__ASSERT(0 != message);
1092
1093                 va_start(args, message);
1094
1095                 (void) vfprintf(stderr, message, args);
1096
1097                 va_end(args);
1098
1099                 printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1100         }
1101
1102         return 1;
1103 }
1104
1105 void show_version(void)
1106 {
1107         printf("flac %s\n", FLAC__VERSION_STRING);
1108 }
1109
1110 static void usage_header(void)
1111 {
1112         printf("===============================================================================\n");
1113         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1114         printf("Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson\n");
1115         printf("\n");
1116         printf("This program is free software; you can redistribute it and/or\n");
1117         printf("modify it under the terms of the GNU General Public License\n");
1118         printf("as published by the Free Software Foundation; either version 2\n");
1119         printf("of the License, or (at your option) any later version.\n");
1120         printf("\n");
1121         printf("This program is distributed in the hope that it will be useful,\n");
1122         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1123         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1124         printf("GNU General Public License for more details.\n");
1125         printf("\n");
1126         printf("You should have received a copy of the GNU General Public License\n");
1127         printf("along with this program; if not, write to the Free Software\n");
1128         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1129         printf("===============================================================================\n");
1130 }
1131
1132 static void usage_summary(void)
1133 {
1134         printf("Usage:\n");
1135         printf("\n");
1136         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1137         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1138         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1139         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1140         printf("\n");
1141 }
1142
1143 void short_usage(void)
1144 {
1145         usage_header();
1146         printf("\n");
1147         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1148         printf("instructions use 'flac --explain'\n");
1149         printf("\n");
1150         printf("To encode:\n");
1151         printf("  flac [-#] [INPUTFILE [...]]\n");
1152         printf("\n");
1153         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1154         printf("\n");
1155         printf("To decode:\n");
1156         printf("  flac -d [INPUTFILE [...]]\n");
1157         printf("\n");
1158         printf("To test:\n");
1159         printf("  flac -t [INPUTFILE [...]]\n");
1160 }
1161
1162 void show_help(void)
1163 {
1164         usage_header();
1165         usage_summary();
1166         printf("general options:\n");
1167         printf("  -v, --version                Show the flac version number\n");
1168         printf("  -h, --help                   Show this screen\n");
1169         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1170         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1171         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1172         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1173         printf("  -c, --stdout                 Write output to stdout\n");
1174         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1175         printf("      --totally-silent         Do not print anything, including errors\n");
1176         printf("      --no-utf8-convert        Do not convert tags from local charset to UTF-8\n");
1177         printf("  -w, --warnings-as-errors     Treat all warnings as errors\n");
1178         printf("  -f, --force                  Force overwriting of output files\n");
1179         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1180         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1181         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1182         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1183         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1184 #if FLAC__HAS_OGG
1185         printf("      --ogg                    Use Ogg as transport layer\n");
1186         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1187 #endif
1188         printf("analysis options:\n");
1189         printf("      --residual-text          Include residual signal in text output\n");
1190         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1191         printf("decoding options:\n");
1192         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1193         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to decode\n");
1194         printf("encoding options:\n");
1195         printf("  -V, --verify                 Verify a correct encoding\n");
1196         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1197 #if 0 /*@@@ currently undocumented */
1198         printf("      --ignore-chunk-sizes     Ignore data chunk sizes in WAVE/AIFF files\n");
1199 #endif
1200         printf("      --sector-align           Align multiple files on sector boundaries\n");
1201         printf("      --replay-gain            Calculate ReplayGain & store in FLAC tags\n");
1202         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1203         printf("      --picture=SPECIFICATION  Import picture and store in PICTURE block\n");
1204         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag; may appear multiple times\n");
1205         printf("      --tag-from-file=FIELD=FILENAME   Like --tag but gets value from file\n");
1206         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1207         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1208         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 3\n");
1209         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 3\n");
1210         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1211         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4096 -r 4\n");
1212         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4096 -M -r 4\n");
1213         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4096 -m -r 5\n");
1214         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4096 -m -r 6\n");
1215         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4096 -m -e -r 6\n");
1216         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4096 -m -e -r 6\n");
1217         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1218         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1219         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1220         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1221         printf("  -A, --apodization=\"function\"       Window audio data with given the function\n");
1222         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1223         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1224         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1225         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1226         printf("format options:\n");
1227         printf("      --endian={big|little}    Set byte order for samples\n");
1228         printf("      --channels=#             Number of channels\n");
1229         printf("      --bps=#                  Number of bits per sample\n");
1230         printf("      --sample-rate=#          Sample rate in Hz\n");
1231         printf("      --sign={signed|unsigned} Sign of samples\n");
1232         printf("      --input-size=#           Size of the raw input in bytes\n");
1233         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1234         printf("      --force-raw-format       Treat input or output as raw samples\n");
1235         printf("negative options:\n");
1236         printf("      --no-adaptive-mid-side\n");
1237         printf("      --no-decode-through-errors\n");
1238         printf("      --no-delete-input-file\n");
1239         printf("      --no-exhaustive-model-search\n");
1240         printf("      --no-lax\n");
1241         printf("      --no-mid-side\n");
1242 #if FLAC__HAS_OGG
1243         printf("      --no-ogg\n");
1244 #endif
1245         printf("      --no-padding\n");
1246         printf("      --no-qlp-coeff-prec-search\n");
1247         printf("      --no-replay-gain\n");
1248         printf("      --no-residual-gnuplot\n");
1249         printf("      --no-residual-text\n");
1250 #if 0 /*@@@ currently undocumented */
1251         printf("      --no-ignore-chunk-sizes\n");
1252 #endif
1253         printf("      --no-sector-align\n");
1254         printf("      --no-seektable\n");
1255         printf("      --no-silent\n");
1256         printf("      --no-force\n");
1257         printf("      --no-verify\n");
1258         printf("      --no-warnings-as-errors\n");
1259 }
1260
1261 void show_explain(void)
1262 {
1263         usage_header();
1264         usage_summary();
1265         printf("For encoding:\n");
1266         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF (or uncompressed AIFF-C)\n");
1267         printf("  file, or raw samples.\n");
1268         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1269         printf("For decoding, the reverse is true.\n");
1270         printf("\n");
1271         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1272         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1273         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1274         printf("instead of:\n");
1275         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1276         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1277         printf("WAVE/AIFF header contents when necessary.\n");
1278         printf("\n");
1279         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1280         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1281         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1282         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1283         printf("files using -fr.\n");
1284         printf("\n");
1285         printf("general options:\n");
1286         printf("  -v, --version                Show the flac version number\n");
1287         printf("  -h, --help                   Show basic usage a list of all options\n");
1288         printf("  -H, --explain                Show this screen\n");
1289         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1290         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1291         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1292         printf("  -c, --stdout                 Write output to stdout\n");
1293         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1294         printf("      --totally-silent         Do not print anything of any kind, including\n");
1295         printf("                               warnings or errors.  The exit code will be the\n");
1296         printf("                               only way to determine successful completion.\n");
1297         printf("      --no-utf8-convert        Do not convert tags from local charset to UTF-8.\n");
1298         printf("                               This is useful for scripts, and setting tags in\n");
1299         printf("                               situations where the locale is wrong.  This\n");
1300         printf("                               option must appear before any tag options!\n");
1301         printf("  -w, --warnings-as-errors     Treat all warnings as errors\n");
1302         printf("  -f, --force                  Force overwriting of output files\n");
1303         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1304         printf("                               changes the extension.  May only be used when\n");
1305         printf("                               encoding a single file.  May not be used in\n");
1306         printf("                               conjunction with --output-prefix.\n");
1307         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1308         printf("                               STRING.  This can be useful for encoding or\n");
1309         printf("                               decoding files to a different directory.  Make\n");
1310         printf("                               sure if your STRING is a path name that it ends\n");
1311         printf("                               with a '/' slash.\n");
1312         printf("      --delete-input-file      Automatically delete the input file after a\n");
1313         printf("                               successful encode or decode.  If there was an\n");
1314         printf("                               error (including a verify error) the input file\n");
1315         printf("                               is left intact.\n");
1316         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1317         printf("                               be used both for encoding and decoding.  The\n");
1318         printf("                               alternative form mm:ss.ss can be used to specify\n");
1319         printf("                               minutes, seconds, and fractions of a second.\n");
1320         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1321         printf("                               file.  The given sample number is not included\n");
1322         printf("                               in the decoded output.  The alternative form\n");
1323         printf("                               mm:ss.ss can be used to specify minutes,\n");
1324         printf("                               seconds, and fractions of a second.  If a `+'\n");
1325         printf("                               sign is at the beginning, the --until point is\n");
1326         printf("                               relative to the --skip point.  If a `-' sign is\n");
1327         printf("                               at the beginning, the --until point is relative\n");
1328         printf("                               to end of the audio.\n");
1329 #if FLAC__HAS_OGG
1330         printf("      --ogg                    When encoding, generate Ogg FLAC output instead\n");
1331         printf("                               of native FLAC.  Ogg FLAC streams are FLAC\n");
1332         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1333         printf("                               resulting file should have an '.oga' extension\n");
1334         printf("                               and will still be decodable by flac.  When\n");
1335         printf("                               decoding, force the input to be treated as\n");
1336         printf("                               Ogg FLAC.  This is useful when piping input\n");
1337         printf("                               from stdin or when the filename does not end in\n");
1338         printf("                               '.oga' or '.ogg'.\n");
1339         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1340         printf("                               encoding and no serial number is given, flac\n");
1341         printf("                               uses a random one.  If encoding to multiple files\n");
1342         printf("                               the serial number is incremented for each file.\n");
1343         printf("                               When decoding and no number is given, flac uses\n");
1344         printf("                               the serial number of the first page.\n");
1345 #endif
1346         printf("analysis options:\n");
1347         printf("      --residual-text          Include residual signal in text output.  This\n");
1348         printf("                               will make the file very big, much larger than\n");
1349         printf("                               even the decoded file.\n");
1350         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1351         printf("                               of each subframe\n");
1352         printf("decoding options:\n");
1353         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1354         printf("                               and removes the partially decoded file if it\n");
1355         printf("                               encounters a bitstream error.  With -F, errors\n");
1356         printf("                               are still printed but flac will continue\n");
1357         printf("                               decoding to completion.  Note that errors may\n");
1358         printf("                               cause the decoded audio to be missing some\n");
1359         printf("                               samples or have silent sections.\n");
1360         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to\n");
1361         printf("                               decode.  The optional first #.# is the track and\n");
1362         printf("                               index point at which decoding will start; the\n");
1363         printf("                               default is the beginning of the stream.  The\n");
1364         printf("                               optional second #.# is the track and index point\n");
1365         printf("                               at which decoding will end; the default is the\n");
1366         printf("                               end of the stream.  If the cuepoint does not\n");
1367         printf("                               exist, the closest one before it (for the start\n");
1368         printf("                               point) or after it (for the end point) will be\n");
1369         printf("                               used.  The cuepoints are merely translated into\n");
1370         printf("                               sample numbers then used as --skip and --until.\n");
1371         printf("                               A CD track can always be cued by, for example,\n");
1372         printf("                               --cue=9.1-10.1 for track 9, even if the CD has\n");
1373         printf("                               no 10th track.\n");
1374         printf("encoding options:\n");
1375         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1376         printf("                               output in parallel and comparing to the\n");
1377         printf("                               original\n");
1378         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1379 #if 0 /*@@@ currently undocumented */
1380         printf("      --ignore-chunk-sizes     Ignore data chunk sizes in WAVE/AIFF files;\n");
1381         printf("                               useful when piping data from programs which\n");
1382         printf("                               generate bogus data chunk sizes.\n");
1383 #endif
1384         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1385         printf("                               on sector boundaries.\n");
1386         printf("      --replay-gain            Calculate ReplayGain values and store them as\n");
1387         printf("                               FLAC tags.  Title gains/peaks will be computed\n");
1388         printf("                               for each file, and an album gain/peak will be\n");
1389         printf("                               computed for all files.  All input files must\n");
1390         printf("                               have the same resolution, sample rate, and\n");
1391         printf("                               number of channels.  The sample rate must be\n");
1392         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1393         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1394         printf("                               few extra bytes in the PADDING block.\n");
1395         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1396         printf("                               a CUESHEET metadata block.  This option may only\n");
1397         printf("                               be used when encoding a single file.  A\n");
1398         printf("                               seekpoint will be added for each index point in\n");
1399         printf("                               the cuesheet to the SEEKTABLE unless\n");
1400         printf("                               --no-cued-seekpoints is specified.\n");
1401         printf("      --picture=SPECIFICATION  Import a picture and store it in a PICTURE block.\n");
1402         printf("                               More than one --picture command can be specified.\n");
1403         printf("                               The SPECIFICATION can either be a simple filename\n");
1404         printf("                               for the picture file, or a complete specification\n");
1405         printf("                               whose parts are separated by | characters.  Some\n");
1406         printf("                               parts may be left empty to invoke default values.\n");
1407         printf("                               Using a filename is shorthand for \"||||FILE\".\n");
1408         printf("                               The SPECIFICATION format is:\n");
1409         printf("         [TYPE]|[MIME-TYPE]|[DESCRIPTION]|[WIDTHxHEIGHTxDEPTH[/COLORS]]|FILE\n");
1410         printf("           TYPE is optional; it is a number from one of:\n");
1411         printf("              0: Other\n");
1412         printf("              1: 32x32 pixels 'file icon' (PNG only)\n");
1413         printf("              2: Other file icon\n");
1414         printf("              3: Cover (front)\n");
1415         printf("              4: Cover (back)\n");
1416         printf("              5: Leaflet page\n");
1417         printf("              6: Media (e.g. label side of CD)\n");
1418         printf("              7: Lead artist/lead performer/soloist\n");
1419         printf("              8: Artist/performer\n");
1420         printf("              9: Conductor\n");
1421         printf("             10: Band/Orchestra\n");
1422         printf("             11: Composer\n");
1423         printf("             12: Lyricist/text writer\n");
1424         printf("             13: Recording Location\n");
1425         printf("             14: During recording\n");
1426         printf("             15: During performance\n");
1427         printf("             16: Movie/video screen capture\n");
1428         printf("             17: A bright coloured fish\n");
1429         printf("             18: Illustration\n");
1430         printf("             19: Band/artist logotype\n");
1431         printf("             20: Publisher/Studio logotype\n");
1432         printf("             The default is 3 (front cover).  There may only be one picture each\n");
1433         printf("             of type 1 and 2 in a file.\n");
1434         printf("           MIME-TYPE is optional; if left blank, it will be detected from the\n");
1435         printf("             file.  For best compatibility with players, use pictures with MIME\n");
1436         printf("             type image/jpeg or image/png.  The MIME type can also be --> to\n");
1437         printf("             mean that FILE is actually a URL to an image, though this use is\n");
1438         printf("             discouraged.\n");
1439         printf("           DESCRIPTION is optional; the default is an empty string\n");
1440         printf("           The next part specfies the resolution and color information.  If\n");
1441         printf("             the MIME-TYPE is image/jpeg, image/png, or image/gif, you can\n");
1442         printf("             usually leave this empty and they can be detected from the file.\n");
1443         printf("             Otherwise, you must specify the width in pixels, height in pixels,\n");
1444         printf("             and color depth in bits-per-pixel.  If the image has indexed colors\n");
1445         printf("             you should also specify the number of colors used.\n");
1446         printf("           FILE is the path to the picture file to be imported, or the URL if\n");
1447         printf("             MIME type is -->\n");
1448         printf("  -T, --tag=FIELD=VALUE        Add a FLAC tag.  Make sure to quote the\n");
1449         printf("                               comment if necessary.  This option may appear\n");
1450         printf("                               more than once to add several comments.  NOTE:\n");
1451         printf("                               all tags will be added to all encoded files.\n");
1452         printf("      --tag-from-file=FIELD=FILENAME   Like --tag, except FILENAME is a file\n");
1453         printf("                               whose contents will be read verbatim to set the\n");
1454         printf("                               tag value.  The contents will be converted to\n");
1455         printf("                               UTF-8 from the local charset.  This can be used\n");
1456         printf("                               to store a cuesheet in a tag (e.g.\n");
1457         printf("                               --tag-from-file=\"CUESHEET=image.cue\").  Do not\n");
1458         printf("                               try to store binary data in tag fields!  Use\n");
1459         printf("                               APPLICATION blocks for that.\n");
1460         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1461         printf("       #  : a specific sample number for a seek point\n");
1462         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1463         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1464         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1465         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1466         printf("           ified union of all such values.\n");
1467         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1468         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1469         printf("           input size before starting.\n");
1470         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1471         printf("           either no seek point entered (if the input size is determinable\n");
1472         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1473         printf("           determinable)\n");
1474         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1475         printf("                               block of the given length (in bytes) after the\n");
1476         printf("                               STREAMINFO block.  This is useful if you plan\n");
1477         printf("                               to tag the file later with an APPLICATION\n");
1478         printf("                               block; instead of having to rewrite the entire\n");
1479         printf("                               file later just to insert your block, you can\n");
1480         printf("                               write directly over the PADDING block.  Note\n");
1481         printf("                               that the total length of the PADDING block will\n");
1482         printf("                               be 4 bytes longer than the length given because\n");
1483         printf("                               of the 4 metadata block header bytes.  You can\n");
1484         printf("                               force no PADDING block at all to be written with\n");
1485         printf("                               --no-padding.  The encoder writes a PADDING\n");
1486         printf("                               block of 8192 bytes by default, or 65536 bytes\n");
1487         printf("                               if the input audio is more than 20 minutes long.\n");
1488         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1489         printf("                               1152 for -l 0, else 4096; must be one of 192,\n");
1490         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1491         printf("                               4096 (and 8192 or 16384 if the sample rate is\n");
1492         printf("                               >48kHz) for Subset streams.\n");
1493         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 3\n");
1494         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 3\n");
1495         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1496         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4096 -r 4\n");
1497         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4096 -M -r 4\n");
1498         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4096 -m -r 5\n");
1499         printf("                                     -5 is the default setting\n");
1500         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4096 -m -r 6\n");
1501         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4096 -m -e -r 6\n");
1502         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4096 -m -e -r 6\n");
1503         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1504         printf("                                     (stereo only)\n");
1505         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1506         printf("                                     (stereo only)\n");
1507         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1508         printf("  -A, --apodization=\"function\"       Window audio data with given the function.\n");
1509         printf("                                     The functions are: bartlett, bartlett_hann,\n");
1510         printf("                                     blackman, blackman_harris_4term_92db,\n");
1511         printf("                                     connes, flattop, gauss(STDDEV), hamming,\n");
1512         printf("                                     hann, kaiser_bessel, nuttall, rectangle,\n");
1513         printf("                                     triangle, tukey(P), welch.  More than one\n");
1514         printf("                                     may be specified but encoding time is a\n");
1515         printf("                                     multiple of the number of functions since\n");
1516         printf("                                     they are each tried in turn.  The encoder\n");
1517         printf("                                     chooses suitable defaults in the absence\n");
1518         printf("                                     of any -A options.\n");
1519         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors.\n");
1520         printf("                                     Must be <= 12 for Subset streams if sample\n");
1521         printf("                                     rate is <=48kHz.\n");
1522         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1523         printf("                                     quantization (expensive!); overrides -q;\n");
1524         printf("                                     does nothing if using -l 0\n");
1525         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1526         printf("                                     linear-predictor coefficients; 0 => let\n");
1527         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1528         printf("                                     default is -q 0)\n");
1529         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1530         printf("                                     (# is 0..16; min defaults to 0; the\n");
1531         printf("                                     default is -r 0; above 4 doesn't usually\n");
1532         printf("                                     help much)\n");
1533         printf("format options:\n");
1534         printf("      --endian={big|little}    Set byte order for samples\n");
1535         printf("      --channels=#             Number of channels\n");
1536         printf("      --bps=#                  Number of bits per sample\n");
1537         printf("      --sample-rate=#          Sample rate in Hz\n");
1538         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1539         printf("      --input-size=#           Size of the raw input in bytes.  If you are\n");
1540         printf("                               encoding raw samples from stdin, you must set\n");
1541         printf("                               this option in order to be able to use --skip,\n");
1542         printf("                               --until, --cue-sheet, or other options that need\n");
1543         printf("                               to know the size of the input beforehand.  If\n");
1544         printf("                               the size given is greater than what is found in\n");
1545         printf("                               the input stream, the encoder will complain\n");
1546         printf("                               about an unexpected end-of-file.  If the size\n");
1547         printf("                               given is less, samples will be truncated.\n");
1548         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1549         printf("                               option is not needed if the output filename (as\n");
1550         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1551         printf("                               has no effect when encoding since input AIFF is\n");
1552         printf("                               auto-detected.\n");
1553         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1554         printf("                               decoding) to be treated as raw samples\n");
1555         printf("negative options:\n");
1556         printf("      --no-adaptive-mid-side\n");
1557         printf("      --no-decode-through-errors\n");
1558         printf("      --no-delete-input-file\n");
1559         printf("      --no-exhaustive-model-search\n");
1560         printf("      --no-lax\n");
1561         printf("      --no-mid-side\n");
1562 #if FLAC__HAS_OGG
1563         printf("      --no-ogg\n");
1564 #endif
1565         printf("      --no-padding\n");
1566         printf("      --no-qlp-coeff-prec-search\n");
1567         printf("      --no-residual-gnuplot\n");
1568         printf("      --no-residual-text\n");
1569 #if 0 /*@@@ currently undocumented */
1570         printf("      --no-ignore-chunk-sizes\n");
1571 #endif
1572         printf("      --no-sector-align\n");
1573         printf("      --no-seektable\n");
1574         printf("      --no-silent\n");
1575         printf("      --no-force\n");
1576         printf("      --no-verify\n");
1577         printf("      --no-warnings-as-errors\n");
1578 }
1579
1580 void format_mistake(const char *infilename, FileFormat wrong, FileFormat right)
1581 {
1582         /* WATCHOUT: indexed by FileFormat */
1583         static const char * const ff[] = { "raw", "WAVE", "AIFF", "FLAC", "Ogg FLAC" };
1584         flac__utils_printf(stderr, 1, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, ff[wrong], ff[right]);
1585 }
1586
1587 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1588 {
1589         FILE *encode_infile;
1590         FLAC__byte lookahead[12];
1591         unsigned lookahead_length = 0;
1592         FileFormat fmt = RAW;
1593         FLAC__bool is_aifc = false;
1594         int retval;
1595         off_t infilesize;
1596         encode_options_t common_options;
1597         const char *outfilename = get_encoded_outfilename(infilename); /* the final name of the encoded file */
1598         /* internal_outfilename is the file we will actually write to; it will be a temporary name if infilename==outfilename */
1599         char *internal_outfilename = 0; /* NULL implies 'use outfilename' */
1600
1601         if(0 == outfilename) {
1602                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1603                 return 1;
1604         }
1605
1606         if(0 == strcmp(infilename, "-")) {
1607                 infilesize = (off_t)(-1);
1608                 encode_infile = grabbag__file_get_binary_stdin();
1609         }
1610         else {
1611                 infilesize = grabbag__file_get_filesize(infilename);
1612                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1613                         flac__utils_printf(stderr, 1, "ERROR: can't open input file %s: %s\n", infilename, strerror(errno));
1614                         return 1;
1615                 }
1616         }
1617
1618         if(!option_values.force_raw_format) {
1619                 /* first set format based on name */
1620                 if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".wav"))
1621                         fmt= WAV;
1622                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".aif"))
1623                         fmt= AIF;
1624                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".aiff"))
1625                         fmt= AIF;
1626                 else if(strlen(infilename) >= 5 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-5), ".flac"))
1627                         fmt= FLAC;
1628                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".oga"))
1629                         fmt= OGGFLAC;
1630                 else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".ogg"))
1631                         fmt= OGGFLAC;
1632
1633                 /* attempt to guess the file type based on the first 12 bytes */
1634                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1635                         if(fmt != RAW) {
1636                                 format_mistake(infilename, fmt, RAW);
1637                                 if(option_values.treat_warnings_as_errors) {
1638                                         conditional_fclose(encode_infile);
1639                                         return 1;
1640                                 }
1641                         }
1642                         fmt= RAW;
1643                 }
1644                 else {
1645                         if(!strncmp((const char *)lookahead, "ID3", 3)) {
1646                                 flac__utils_printf(stderr, 1, "ERROR: input file %s has an ID3v2 tag\n", infilename);
1647                                 return 1;
1648                         }
1649                         else if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1650                                 fmt= WAV;
1651                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1652                                 fmt= AIF;
1653                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFC", 4)) {
1654                                 fmt= AIF;
1655                                 is_aifc = true;
1656                         }
1657                         else if(!memcmp(lookahead, FLAC__STREAM_SYNC_STRING, sizeof(FLAC__STREAM_SYNC_STRING)))
1658                                 fmt= FLAC;
1659                         /* this could be made more accurate by looking at the first packet */
1660                         else if(!memcmp(lookahead, "OggS", 4))
1661                                 fmt= OGGFLAC;
1662                         else {
1663                                 if(fmt != RAW) {
1664                                         format_mistake(infilename, fmt, RAW);
1665                                         if(option_values.treat_warnings_as_errors) {
1666                                                 conditional_fclose(encode_infile);
1667                                                 return 1;
1668                                         }
1669                                 }
1670                                 fmt= RAW;
1671                         }
1672                 }
1673         }
1674
1675         /*
1676          * Error if output file already exists (and -f not used).
1677          * Use grabbag__file_get_filesize() as a cheap way to check.
1678          */
1679         if(!option_values.test_only && !option_values.force_file_overwrite && strcmp(outfilename, "-") && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1680                 if(fmt == FLAC) {
1681                         /* need more detailed error message when re-flac'ing to avoid confusing the user */
1682                         flac__utils_printf(stderr, 1,
1683                                 "ERROR: output file %s already exists.\n\n"
1684                                 "By default flac encodes files to FLAC format; if you meant to decode this file\n"
1685                                 "from FLAC to something else, use -d.  If you meant to re-encode this file from\n"
1686                                 "FLAC to FLAC again, use -f to force writing to the same file, or -o to specify\n"
1687                                 "a different output filename.\n",
1688                                 outfilename
1689                         );
1690                 }
1691                 else if(fmt == OGGFLAC) {
1692                         /* need more detailed error message when re-flac'ing to avoid confusing the user */
1693                         flac__utils_printf(stderr, 1,
1694                                 "ERROR: output file %s already exists.\n\n"
1695                                 "By default 'flac -ogg' encodes files to Ogg FLAC format; if you meant to decode\n"
1696                                 "this file from Ogg FLAC to something else, use -d.  If you meant to re-encode\n"
1697                                 "this file from Ogg FLAC to Ogg FLAC again, use -f to force writing to the same\n"
1698                                 "file, or -o to specify a different output filename.\n",
1699                                 outfilename
1700                         );
1701                 }
1702                 else
1703                         flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1704                 conditional_fclose(encode_infile);
1705                 return 1;
1706         }
1707
1708         if(option_values.format_input_size >= 0) {
1709                 if (fmt != RAW || infilesize >= 0) {
1710                         flac__utils_printf(stderr, 1, "ERROR: can only use --input-size when encoding raw samples from stdin\n");
1711                         conditional_fclose(encode_infile);
1712                         return 1;
1713                 }
1714                 else {
1715                         infilesize = option_values.format_input_size;
1716                 }
1717         }
1718
1719         if(option_values.sector_align && (fmt == FLAC || fmt == OGGFLAC)) {
1720                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input file is FLAC or Ogg FLAC\n");
1721                 conditional_fclose(encode_infile);
1722                 return 1;
1723         }
1724         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1725                 flac__utils_printf(stderr, 1, "ERROR: can't use --sector-align when the input size is unknown\n");
1726                 conditional_fclose(encode_infile);
1727                 return 1;
1728         }
1729
1730         if(fmt == RAW) {
1731                 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) {
1732                         conditional_fclose(encode_infile);
1733                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1734                 }
1735         }
1736
1737         if(encode_infile == stdin || option_values.force_to_stdout) {
1738                 if(option_values.replay_gain) {
1739                         conditional_fclose(encode_infile);
1740                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1741                 }
1742         }
1743         if(option_values.replay_gain && option_values.use_ogg) {
1744                 conditional_fclose(encode_infile);
1745                 return usage_error("ERROR: --replay-gain cannot be used when encoding to Ogg FLAC yet\n");
1746         }
1747
1748         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative) {
1749                 conditional_fclose(encode_infile);
1750                 return usage_error("ERROR: invalid value for --skip\n");
1751         }
1752
1753         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 */
1754                 conditional_fclose(encode_infile);
1755                 return usage_error("ERROR: invalid value for --until\n");
1756         }
1757         /* if there is no "--until" we want to default to "--until=-0" */
1758         if(0 == option_values.until_specification)
1759                 common_options.until_specification.is_relative = true;
1760
1761         common_options.verify = option_values.verify;
1762         common_options.treat_warnings_as_errors = option_values.treat_warnings_as_errors;
1763 #if FLAC__HAS_OGG
1764         common_options.use_ogg = option_values.use_ogg;
1765         /* set a random serial number if one has not yet been specified */
1766         if(!option_values.has_serial_number) {
1767                 option_values.serial_number = rand();
1768                 option_values.has_serial_number = true;
1769         }
1770         common_options.serial_number = option_values.serial_number++;
1771 #endif
1772         common_options.lax = option_values.lax;
1773         common_options.padding = option_values.padding;
1774         common_options.num_compression_settings = option_values.num_compression_settings;
1775         FLAC__ASSERT(sizeof(common_options.compression_settings) >= sizeof(option_values.compression_settings));
1776         memcpy(common_options.compression_settings, option_values.compression_settings, sizeof(option_values.compression_settings));
1777         common_options.requested_seek_points = option_values.requested_seek_points;
1778         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1779         common_options.cuesheet_filename = option_values.cuesheet_filename;
1780         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1781         common_options.cued_seekpoints = option_values.cued_seekpoints;
1782         common_options.channel_map_none = option_values.channel_map_none;
1783         common_options.is_first_file = is_first_file;
1784         common_options.is_last_file = is_last_file;
1785         common_options.align_reservoir = align_reservoir;
1786         common_options.align_reservoir_samples = &align_reservoir_samples;
1787         common_options.replay_gain = option_values.replay_gain;
1788         common_options.ignore_chunk_sizes = option_values.ignore_chunk_sizes;
1789         common_options.sector_align = option_values.sector_align;
1790         common_options.vorbis_comment = option_values.vorbis_comment;
1791         FLAC__ASSERT(sizeof(common_options.pictures) >= sizeof(option_values.pictures));
1792         memcpy(common_options.pictures, option_values.pictures, sizeof(option_values.pictures));
1793         common_options.num_pictures = option_values.num_pictures;
1794         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1795         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1796         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1797         common_options.debug.do_md5 = option_values.debug.do_md5;
1798
1799         /* if infilename and outfilename point to the same file, we need to write to a temporary file */
1800         if(encode_infile != stdin && grabbag__file_are_same(infilename, outfilename)) {
1801                 static const char *tmp_suffix = ".tmp,fl-ac+en'c";
1802                 /*@@@@ still a remote possibility that a file with this filename exists */
1803                 if(0 == (internal_outfilename = (char *)malloc(strlen(outfilename)+strlen(tmp_suffix)+1))) {
1804                         flac__utils_printf(stderr, 1, "ERROR allocating memory for tempfile name\n");
1805                         conditional_fclose(encode_infile);
1806                         return 1;
1807                 }
1808                 strcpy(internal_outfilename, outfilename);
1809                 strcat(internal_outfilename, tmp_suffix);
1810         }
1811
1812         if(fmt == RAW) {
1813                 raw_encode_options_t options;
1814
1815                 options.common = common_options;
1816                 options.is_big_endian = option_values.format_is_big_endian;
1817                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1818                 options.channels = option_values.format_channels;
1819                 options.bps = option_values.format_bps;
1820                 options.sample_rate = option_values.format_sample_rate;
1821
1822                 retval = flac__encode_raw(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1823         }
1824         else if(fmt == FLAC || fmt == OGGFLAC) {
1825                 flac_encode_options_t options;
1826
1827                 options.common = common_options;
1828
1829                 retval = flac__encode_flac(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options, fmt==OGGFLAC);
1830         }
1831         else {
1832                 wav_encode_options_t options;
1833
1834                 options.common = common_options;
1835
1836                 if(fmt == AIF)
1837                         retval = flac__encode_aif(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options, is_aifc);
1838                 else
1839                         retval = flac__encode_wav(encode_infile, infilesize, infilename, internal_outfilename? internal_outfilename : outfilename, lookahead, lookahead_length, options);
1840         }
1841
1842         if(retval == 0) {
1843                 if(strcmp(outfilename, "-")) {
1844                         if(option_values.replay_gain) {
1845                                 float title_gain, title_peak;
1846                                 const char *error;
1847                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1848                                 if(
1849                                         0 != (error = grabbag__replaygain_store_to_file_reference(internal_outfilename? internal_outfilename : outfilename, /*preserve_modtime=*/true)) ||
1850                                         0 != (error = grabbag__replaygain_store_to_file_title(internal_outfilename? internal_outfilename : outfilename, title_gain, title_peak, /*preserve_modtime=*/true))
1851                                 ) {
1852                                         flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain reference/title tags (%s)\n", outfilename, error);
1853                                 }
1854                         }
1855                         if(strcmp(infilename, "-"))
1856                                 grabbag__file_copy_metadata(infilename, internal_outfilename? internal_outfilename : outfilename);
1857                 }
1858         }
1859
1860         /* rename temporary file if necessary */
1861         if(retval == 0 && internal_outfilename != 0) {
1862                 if(rename(internal_outfilename, outfilename) < 0) {
1863 #if defined _MSC_VER || defined __MINGW32__ || defined __EMX__
1864                         /* on some flavors of windows, rename() will fail if the destination already exists, so we unlink and try again */
1865                         if(unlink(outfilename) < 0) {
1866                                 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);
1867                                 retval = 1;
1868                         }
1869                         else if(rename(internal_outfilename, outfilename) < 0) {
1870                                 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);
1871                                 retval = 1;
1872                         }
1873 #else
1874                         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);
1875                         retval = 1;
1876 #endif
1877                 }
1878         }
1879
1880         /* handle --delete-input-file, but don't want to delete if piping from stdin, or if input filename and output filename are the same */
1881         if(retval == 0 && option_values.delete_input && strcmp(infilename, "-") && internal_outfilename == 0)
1882                 unlink(infilename);
1883
1884         if(internal_outfilename != 0)
1885                 free(internal_outfilename);
1886
1887         return retval;
1888 }
1889
1890 int decode_file(const char *infilename)
1891 {
1892         int retval;
1893         FLAC__bool treat_as_ogg = false;
1894         decode_options_t common_options;
1895         const char *outfilename = get_decoded_outfilename(infilename);
1896
1897         if(0 == outfilename) {
1898                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1899                 return 1;
1900         }
1901
1902         /*
1903          * Error if output file already exists (and -f not used).
1904          * Use grabbag__file_get_filesize() as a cheap way to check.
1905          */
1906         if(!option_values.test_only && !option_values.force_file_overwrite && strcmp(outfilename, "-") && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1907                 flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1908                 return 1;
1909         }
1910
1911         if(!option_values.test_only && !option_values.analyze) {
1912                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1913                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1914         }
1915
1916         if(option_values.use_ogg)
1917                 treat_as_ogg = true;
1918         else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".oga"))
1919                 treat_as_ogg = true;
1920         else if(strlen(infilename) >= 4 && 0 == FLAC__STRCASECMP(infilename+(strlen(infilename)-4), ".ogg"))
1921                 treat_as_ogg = true;
1922         else
1923                 treat_as_ogg = false;
1924
1925 #if !FLAC__HAS_OGG
1926         if(treat_as_ogg) {
1927                 flac__utils_printf(stderr, 1, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1928                 return 1;
1929         }
1930 #endif
1931
1932         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1933                 return usage_error("ERROR: invalid value for --skip\n");
1934
1935         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 */
1936                 return usage_error("ERROR: invalid value for --until\n");
1937         /* if there is no "--until" we want to default to "--until=-0" */
1938         if(0 == option_values.until_specification)
1939                 common_options.until_specification.is_relative = true;
1940
1941         if(option_values.cue_specification) {
1942                 if(!flac__utils_parse_cue_specification(option_values.cue_specification, &common_options.cue_specification))
1943                         return usage_error("ERROR: invalid value for --cue\n");
1944                 common_options.has_cue_specification = true;
1945         }
1946         else
1947                 common_options.has_cue_specification = false;
1948
1949         common_options.treat_warnings_as_errors = option_values.treat_warnings_as_errors;
1950         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1951         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1952 #if FLAC__HAS_OGG
1953         common_options.is_ogg = treat_as_ogg;
1954         common_options.use_first_serial_number = !option_values.has_serial_number;
1955         common_options.serial_number = option_values.serial_number;
1956 #endif
1957         common_options.channel_map_none = option_values.channel_map_none;
1958
1959         if(!option_values.force_raw_format) {
1960                 wav_decode_options_t options;
1961
1962                 options.common = common_options;
1963
1964                 if(
1965                         option_values.force_aiff_format ||
1966                         (strlen(outfilename) >= 4 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-4), ".aif")) ||
1967                         (strlen(outfilename) >= 5 && 0 == FLAC__STRCASECMP(outfilename+(strlen(outfilename)-5), ".aiff"))
1968                 )
1969                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1970                 else
1971                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1972         }
1973         else {
1974                 raw_decode_options_t options;
1975
1976                 options.common = common_options;
1977                 options.is_big_endian = option_values.format_is_big_endian;
1978                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1979
1980                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1981         }
1982
1983         if(retval == 0 && strcmp(infilename, "-")) {
1984                 if(strcmp(outfilename, "-"))
1985                         grabbag__file_copy_metadata(infilename, outfilename);
1986                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1987                         unlink(infilename);
1988         }
1989
1990         return retval;
1991 }
1992
1993 const char *get_encoded_outfilename(const char *infilename)
1994 {
1995         const char *suffix = (option_values.use_ogg? ".oga" : ".flac");
1996         return get_outfilename(infilename, suffix);
1997 }
1998
1999 const char *get_decoded_outfilename(const char *infilename)
2000 {
2001         const char *suffix;
2002         if(option_values.analyze) {
2003                 suffix = ".ana";
2004         }
2005         else if(option_values.force_raw_format) {
2006                 suffix = ".raw";
2007         }
2008         else if(option_values.force_aiff_format) {
2009                 suffix = ".aiff";
2010         }
2011         else {
2012                 suffix = ".wav";
2013         }
2014         return get_outfilename(infilename, suffix);
2015 }
2016
2017 const char *get_outfilename(const char *infilename, const char *suffix)
2018 {
2019         if(0 == option_values.cmdline_forced_outfilename) {
2020                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
2021
2022                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
2023                         strcpy(buffer, "-");
2024                 }
2025                 else {
2026                         char *p;
2027                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
2028                                 return 0;
2029                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
2030                                 return 0;
2031                         /* the . must come after any / to avoid problems with, e.g. "some.directory/extensionless-filename" */
2032                         if(0 == (p = strrchr(buffer, '.')) || strchr(p, '/')) {
2033                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
2034                                         return 0;
2035                         }
2036                         else {
2037                                 *p = '\0';
2038                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
2039                                         return 0;
2040                         }
2041                 }
2042                 return buffer;
2043         }
2044         else
2045                 return option_values.cmdline_forced_outfilename;
2046 }
2047
2048 void die(const char *message)
2049 {
2050         FLAC__ASSERT(0 != message);
2051         flac__utils_printf(stderr, 1, "ERROR: %s\n", message);
2052         exit(1);
2053 }
2054
2055 int conditional_fclose(FILE *f)
2056 {
2057         if(f == 0 || f == stdin || f == stdout)
2058                 return 0;
2059         else
2060                 return fclose(f);
2061 }
2062
2063 char *local_strdup(const char *source)
2064 {
2065         char *ret;
2066         FLAC__ASSERT(0 != source);
2067         if(0 == (ret = strdup(source)))
2068                 die("out of memory during strdup()");
2069         return ret;
2070 }
2071
2072 #ifdef _MSC_VER
2073 /* There's no strtoll() in MSVC6 so we just write a specialized one */
2074 FLAC__int64 local__strtoll(const char *src, char **endptr)
2075 {
2076         FLAC__bool neg = false;
2077         FLAC__int64 ret = 0;
2078         int c;
2079         FLAC__ASSERT(0 != src);
2080         if(*src == '-') {
2081                 neg = true;
2082                 src++;
2083         }
2084         while(0 != (c = *src)) {
2085                 c -= '0';
2086                 if(c >= 0 && c <= 9)
2087                         ret = (ret * 10) + c;
2088                 else
2089                         break;
2090                 src++;
2091         }
2092         if(endptr)
2093                 *endptr = (char*)src;
2094         return neg? -ret : ret;
2095 }
2096 #endif