rename string.* to more unambiguous local_string_utils.*
[flac.git] / src / flac / main.c
1 /* flac - Command-line FLAC encoder/decoder
2  * Copyright (C) 2000,2001,2002,2003  Josh Coalson
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
17  */
18
19 #include <ctype.h>
20 #include <locale.h>
21 #include <stdarg.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #ifdef HAVE_CONFIG_H
27 #include <config.h>
28 #endif
29
30 #if !defined _MSC_VER && !defined __MINGW32__
31 /* unlink is in stdio.h in VC++ */
32 #include <unistd.h> /* for unlink() */
33 #else
34 #define strcasecmp stricmp
35 #endif
36 #include "FLAC/all.h"
37 #include "share/grabbag.h"
38 #include "analyze.h"
39 #include "decode.h"
40 #include "encode.h"
41 #include "local_string_utils.h" /* for flac__strlcat() and flac__strlcpy() */
42 #include "utils.h"
43 #include "vorbiscomment.h"
44
45 #if 0
46 /*[JEC] was:#if HAVE_GETOPT_LONG*/
47 /*[JEC] see flac/include/share/getopt.h as to why the change */
48 #  include <getopt.h>
49 #else
50 #  include "share/getopt.h"
51 #endif
52
53 typedef enum { RAW, WAV, AIF } FileFormat;
54
55 static int do_it();
56
57 static FLAC__bool init_options();
58 static int parse_options(int argc, char *argv[]);
59 static int parse_option(int short_option, const char *long_option, const char *option_argument);
60 static void free_options();
61
62 static int usage_error(const char *message, ...);
63 static void short_usage();
64 static void show_version();
65 static void show_help();
66 static void show_explain();
67 static void format_mistake(const char *infilename, const char *wrong, const char *right);
68
69 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
70 static int decode_file(const char *infilename);
71
72 static const char *get_encoded_outfilename(const char *infilename);
73 static const char *get_decoded_outfilename(const char *infilename);
74 static const char *get_outfilename(const char *infilename, const char *suffix);
75
76 static void die(const char *message);
77 static char *local_strdup(const char *source);
78
79
80 /*
81  * share__getopt format struct; note that for long options with no
82  * short option equivalent we just set the 'val' field to 0.
83  */
84 static struct share__option long_options_[] = {
85         /*
86          * general options
87          */
88         { "help"             , share__no_argument, 0, 'h' },
89         { "explain"          , share__no_argument, 0, 'H' },
90         { "version"          , share__no_argument, 0, 'v' },
91         { "decode"           , share__no_argument, 0, 'd' },
92         { "analyze"          , share__no_argument, 0, 'a' },
93         { "test"             , share__no_argument, 0, 't' },
94         { "stdout"           , share__no_argument, 0, 'c' },
95         { "silent"           , share__no_argument, 0, 's' },
96         { "delete-input-file", share__no_argument, 0, 0 },
97         { "output-prefix"    , share__required_argument, 0, 0 },
98         { "output-name"      , share__required_argument, 0, 'o' },
99         { "skip"             , share__required_argument, 0, 0 },
100         { "until"            , share__required_argument, 0, 0 },
101
102         /*
103          * decoding options
104          */
105         { "decode-through-errors", share__no_argument, 0, 'F' },
106         { "apply-replaygain-which-is-not-lossless", share__optional_argument, 0, 0 }, /* undocumented */
107
108         /*
109          * encoding options
110          */
111         { "cuesheet"                  , share__required_argument, 0, 0 },
112         { "no-cued-seekpoints"        , share__no_argument, 0, 0 },
113         { "tag"                       , share__required_argument, 0, 'T' },
114         { "compression-level-0"       , share__no_argument, 0, '0' },
115         { "compression-level-1"       , share__no_argument, 0, '1' },
116         { "compression-level-2"       , share__no_argument, 0, '2' },
117         { "compression-level-3"       , share__no_argument, 0, '3' },
118         { "compression-level-4"       , share__no_argument, 0, '4' },
119         { "compression-level-5"       , share__no_argument, 0, '5' },
120         { "compression-level-6"       , share__no_argument, 0, '6' },
121         { "compression-level-7"       , share__no_argument, 0, '7' },
122         { "compression-level-8"       , share__no_argument, 0, '8' },
123         { "compression-level-9"       , share__no_argument, 0, '9' },
124         { "best"                      , share__no_argument, 0, '8' },
125         { "fast"                      , share__no_argument, 0, '0' },
126         { "super-secret-totally-impractical-compression-level", share__no_argument, 0, 0 },
127         { "verify"                    , share__no_argument, 0, 'V' },
128         { "force-aiff-format"         , share__no_argument, 0, 0 },
129         { "force-raw-format"          , share__no_argument, 0, 0 },
130         { "lax"                       , share__no_argument, 0, 0 },
131         { "replay-gain"               , share__no_argument, 0, 0 },
132         { "sector-align"              , share__no_argument, 0, 0 },
133         { "seekpoint"                 , share__required_argument, 0, 'S' },
134         { "padding"                   , share__required_argument, 0, 'P' },
135 #ifdef FLAC__HAS_OGG
136         { "ogg"                       , share__no_argument, 0, 0 },
137         { "serial-number"             , share__required_argument, 0, 0 },
138 #endif
139         { "blocksize"                 , share__required_argument, 0, 'b' },
140         { "exhaustive-model-search"   , share__no_argument, 0, 'e' },
141         { "max-lpc-order"             , share__required_argument, 0, 'l' },
142         { "mid-side"                  , share__no_argument, 0, 'm' },
143         { "adaptive-mid-side"         , share__no_argument, 0, 'M' },
144         { "qlp-coeff-precision-search", share__no_argument, 0, 'p' },
145         { "qlp-coeff-precision"       , share__required_argument, 0, 'q' },
146         { "rice-partition-order"      , share__required_argument, 0, 'r' },
147         { "endian"                    , share__required_argument, 0, 0 },
148         { "channels"                  , share__required_argument, 0, 0 },
149         { "bps"                       , share__required_argument, 0, 0 },
150         { "sample-rate"               , share__required_argument, 0, 0 },
151         { "sign"                      , share__required_argument, 0, 0 },
152
153         /*
154          * analysis options
155          */
156         { "residual-gnu-plot", share__no_argument, 0, 0 },
157         { "residual-text", share__no_argument, 0, 0 },
158
159         /*
160          * negatives
161          */
162         { "no-decode-through-errors"  , share__no_argument, 0, 0 },
163         { "no-silent"                 , share__no_argument, 0, 0 },
164         { "no-seektable"              , share__no_argument, 0, 0 },
165         { "no-delete-input-file"      , share__no_argument, 0, 0 },
166         { "no-replay-gain"            , share__no_argument, 0, 0 },
167         { "no-sector-align"           , share__no_argument, 0, 0 },
168         { "no-lax"                    , share__no_argument, 0, 0 },
169 #ifdef FLAC__HAS_OGG
170         { "no-ogg"                    , share__no_argument, 0, 0 },
171 #endif
172         { "no-exhaustive-model-search", share__no_argument, 0, 0 },
173         { "no-mid-side"               , share__no_argument, 0, 0 },
174         { "no-adaptive-mid-side"      , share__no_argument, 0, 0 },
175         { "no-qlp-coeff-prec-search"  , share__no_argument, 0, 0 },
176         { "no-padding"                , share__no_argument, 0, 0 },
177         { "no-verify"                 , share__no_argument, 0, 0 },
178         { "no-residual-gnuplot"       , share__no_argument, 0, 0 },
179         { "no-residual-text"          , share__no_argument, 0, 0 },
180         /*
181          * undocumented debugging options for the test suite
182          */
183         { "disable-constant-subframes", share__no_argument, 0, 0 },
184         { "disable-fixed-subframes"   , share__no_argument, 0, 0 },
185         { "disable-verbatim-subframes", share__no_argument, 0, 0 },
186
187         {0, 0, 0, 0}
188 };
189
190
191 /*
192  * global to hold command-line option values
193  */
194
195 static struct {
196         FLAC__bool show_help;
197         FLAC__bool show_explain;
198         FLAC__bool show_version;
199         FLAC__bool mode_decode;
200         FLAC__bool verify;
201         FLAC__bool verbose;
202         FLAC__bool continue_through_decode_errors;
203         replaygain_synthesis_spec_t replaygain_synthesis_spec;
204         FLAC__bool lax;
205         FLAC__bool test_only;
206         FLAC__bool analyze;
207         FLAC__bool use_ogg;
208         FLAC__bool has_serial_number; /* true iff --serial-number was used */
209         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
210         FLAC__bool do_mid_side;
211         FLAC__bool loose_mid_side;
212         FLAC__bool do_exhaustive_model_search;
213         FLAC__bool do_escape_coding;
214         FLAC__bool do_qlp_coeff_prec_search;
215         FLAC__bool force_to_stdout;
216         FLAC__bool force_aiff_format;
217         FLAC__bool force_raw_format;
218         FLAC__bool delete_input;
219         FLAC__bool replay_gain;
220         FLAC__bool sector_align;
221         const char *cmdline_forced_outfilename;
222         const char *output_prefix;
223         analysis_options aopts;
224         int padding;
225         unsigned max_lpc_order;
226         unsigned qlp_coeff_precision;
227         const char *skip_specification;
228         const char *until_specification;
229         int format_is_big_endian;
230         int format_is_unsigned_samples;
231         int format_channels;
232         int format_bps;
233         int format_sample_rate;
234         int blocksize;
235         int min_residual_partition_order;
236         int max_residual_partition_order;
237         int rice_parameter_search_dist;
238         char requested_seek_points[50000]; /* bad MAGIC NUMBER but buffer overflow is checked */
239         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
240         const char *cuesheet_filename;
241         FLAC__bool cued_seekpoints;
242
243         unsigned num_files;
244         char **filenames;
245
246         FLAC__StreamMetadata *vorbis_comment;
247
248         struct {
249                 FLAC__bool disable_constant_subframes;
250                 FLAC__bool disable_fixed_subframes;
251                 FLAC__bool disable_verbatim_subframes;
252         } debug;
253 } option_values;
254
255
256 /*
257  * miscellaneous globals
258  */
259
260 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
261 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
262 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
263
264
265 int main(int argc, char *argv[])
266 {
267         int retval = 0;
268
269         setlocale(LC_ALL, "");
270         if(!init_options()) {
271                 fprintf(stderr, "ERROR: allocating memory\n");
272                 retval = 1;
273         }
274         else {
275                 if((retval = parse_options(argc, argv)) == 0)
276                         retval = do_it();
277         }
278
279         free_options();
280
281         return retval;
282 }
283
284 int do_it()
285 {
286         int retval = 0;
287
288         if(option_values.show_version) {
289                 show_version();
290                 return 0;
291         }
292         else if(option_values.show_explain) {
293                 show_explain();
294                 return 0;
295         }
296         else if(option_values.show_help) {
297                 show_help();
298                 return 0;
299         }
300         else {
301                 if(option_values.num_files == 0) {
302                         short_usage();
303                         return 0;
304                 }
305
306                 /*
307                  * tweak options; validate the values
308                  */
309                 if(!option_values.mode_decode) {
310                         if(option_values.blocksize < 0) {
311                                 if(option_values.max_lpc_order == 0)
312                                         option_values.blocksize = 1152;
313                                 else
314                                         option_values.blocksize = 4608;
315                         }
316                         if(option_values.max_residual_partition_order < 0) {
317                                 if(option_values.blocksize <= 1152)
318                                         option_values.max_residual_partition_order = 2;
319                                 else if(option_values.blocksize <= 2304)
320                                         option_values.max_residual_partition_order = 3;
321                                 else if(option_values.blocksize <= 4608)
322                                         option_values.max_residual_partition_order = 3;
323                                 else
324                                         option_values.max_residual_partition_order = 4;
325                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
326                         }
327                         if(option_values.rice_parameter_search_dist < 0) {
328                                 option_values.rice_parameter_search_dist = 0;
329                         }
330                 }
331                 else {
332                         if(option_values.test_only) {
333                                 if(0 != option_values.skip_specification)
334                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
335                                 if(0 != option_values.until_specification)
336                                         return usage_error("ERROR: --until is not allowed in test mode\n");
337                         }
338                 }
339
340                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
341
342                 if(option_values.format_channels >= 0) {
343                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
344                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
345                 }
346                 if(option_values.format_bps >= 0) {
347                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
348                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
349                 }
350                 if(option_values.format_sample_rate >= 0) {
351                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
352                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
353                 }
354                 if(option_values.force_raw_format && option_values.force_aiff_format)
355                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
356                 if(option_values.mode_decode) {
357                         if(!option_values.force_raw_format) {
358                                 if(option_values.format_is_big_endian >= 0)
359                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
360                                 if(option_values.format_is_unsigned_samples >= 0)
361                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
362                         }
363                         if(option_values.format_channels >= 0)
364                                 return usage_error("ERROR: --channels not allowed with --decode\n");
365                         if(option_values.format_bps >= 0)
366                                 return usage_error("ERROR: --bps not allowed with --decode\n");
367                         if(option_values.format_sample_rate >= 0)
368                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
369                 }
370                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
371                         return usage_error("ERROR: invalid blocksize '%u', must be >= %u and <= %u\n", (unsigned)option_values.blocksize, FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE);
372                 }
373                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
374                         return usage_error("ERROR: invalid value '%u' for qlp coeff precision, must be 0 or >= %u\n", option_values.qlp_coeff_precision, FLAC__MIN_QLP_COEFF_PRECISION);
375                 }
376
377                 if(option_values.sector_align) {
378                         if(option_values.mode_decode)
379                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
380                         if(0 != option_values.skip_specification)
381                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
382                         if(0 != option_values.until_specification)
383                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
384                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
385                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
386                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
387                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
388                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
389                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
390                 }
391                 if(option_values.replay_gain) {
392                         if(option_values.force_to_stdout)
393                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
394                         if(option_values.mode_decode)
395                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
396                         if(option_values.format_channels > 2)
397                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
398                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
399                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
400                         /*
401                          * We want to reserve padding space for the ReplayGain
402                          * tags that we will set later, to avoid rewriting the
403                          * whole file.
404                          */
405                         if(option_values.padding < 0) {
406                                 fprintf(stderr, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
407                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
408                         }
409                         else {
410                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
411                         }
412                 }
413                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
414                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
415                 }
416                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
417                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
418                 }
419                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
420                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
421                 }
422         }
423         if(option_values.verbose) {
424                 fprintf(stderr, "\n");
425                 fprintf(stderr, "flac %s, Copyright (C) 2000,2001,2002,2003 Josh Coalson\n", FLAC__VERSION_STRING);
426                 fprintf(stderr, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
427                 fprintf(stderr, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
428
429                 if(!option_values.mode_decode) {
430                         char padopt[16];
431                         if(option_values.padding < 0)
432                                 strcpy(padopt, "-");
433                         else
434                                 sprintf(padopt, " %d", option_values.padding);
435                         fprintf(stderr,
436                                 "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
437                                 option_values.delete_input?" --delete-input-file":"",
438                                 option_values.sector_align?" --sector-align":"",
439                                 option_values.use_ogg?" --ogg":"",
440                                 option_values.lax?" --lax":"",
441                                 padopt,
442                                 (unsigned)option_values.blocksize,
443                                 option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
444                                 option_values.max_lpc_order,
445                                 option_values.do_exhaustive_model_search?" -e":"",
446                                 option_values.do_escape_coding?" -E":"",
447                                 option_values.do_qlp_coeff_prec_search?" -p":"",
448                                 option_values.qlp_coeff_precision,
449                                 (unsigned)option_values.min_residual_partition_order,
450                                 (unsigned)option_values.max_residual_partition_order,
451                                 option_values.verify? " -V":""
452                         );
453                 }
454         }
455
456         if(option_values.mode_decode) {
457                 FLAC__bool first = true;
458
459                 if(option_values.num_files == 0) {
460                         retval = decode_file("-");
461                 }
462                 else {
463                         unsigned i;
464                         if(option_values.num_files > 1)
465                                 option_values.cmdline_forced_outfilename = 0;
466                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
467                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
468                                         continue;
469                                 retval |= decode_file(option_values.filenames[i]);
470                                 first = false;
471                         }
472                 }
473         }
474         else { /* encode */
475                 FLAC__bool first = true;
476
477                 if(option_values.num_files == 0) {
478                         retval = encode_file("-", first, true);
479                 }
480                 else {
481                         unsigned i;
482                         if(option_values.num_files > 1)
483                                 option_values.cmdline_forced_outfilename = 0;
484                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
485                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
486                                         continue;
487                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
488                                 first = false;
489                         }
490                         if(option_values.replay_gain && retval == 0) {
491                                 float album_gain, album_peak;
492                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
493                                 for(i = 0; i < option_values.num_files; i++) {
494                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
495                                         if(0 == outfilename) {
496                                                 fprintf(stderr, "ERROR: filename too long: %s", option_values.filenames[i]);
497                                                 return 1;
498                                         }
499                                         if(0 == strcmp(option_values.filenames[i], "-")) {
500                                                 FLAC__ASSERT(0);
501                                                 /* double protection */
502                                                 fprintf(stderr, "internal error\n");
503                                                 return 2;
504                                         }
505                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
506                                                 fprintf(stderr, "%s: ERROR writing ReplayGain album tags\n", outfilename);
507                                                 retval = 1;
508                                         }
509                                 }
510                         }
511                 }
512         }
513
514         return retval;
515 }
516
517 FLAC__bool init_options()
518 {
519         option_values.show_help = false;
520         option_values.show_explain = false;
521         option_values.mode_decode = false;
522         option_values.verify = false;
523         option_values.verbose = true;
524         option_values.continue_through_decode_errors = false;
525         option_values.replaygain_synthesis_spec.apply = false;
526         option_values.replaygain_synthesis_spec.use_album_gain = true;
527         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
528         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
529         option_values.replaygain_synthesis_spec.preamp = 0.0;
530         option_values.lax = false;
531         option_values.test_only = false;
532         option_values.analyze = false;
533         option_values.use_ogg = false;
534         option_values.has_serial_number = false;
535         option_values.serial_number = 0;
536         option_values.do_mid_side = true;
537         option_values.loose_mid_side = false;
538         option_values.do_exhaustive_model_search = false;
539         option_values.do_escape_coding = false;
540         option_values.do_qlp_coeff_prec_search = false;
541         option_values.force_to_stdout = false;
542         option_values.force_aiff_format = false;
543         option_values.force_raw_format = false;
544         option_values.delete_input = false;
545         option_values.replay_gain = false;
546         option_values.sector_align = false;
547         option_values.cmdline_forced_outfilename = 0;
548         option_values.output_prefix = 0;
549         option_values.aopts.do_residual_text = false;
550         option_values.aopts.do_residual_gnuplot = false;
551         option_values.padding = 4096;
552         option_values.max_lpc_order = 8;
553         option_values.qlp_coeff_precision = 0;
554         option_values.skip_specification = 0;
555         option_values.until_specification = 0;
556         option_values.format_is_big_endian = -1;
557         option_values.format_is_unsigned_samples = -1;
558         option_values.format_channels = -1;
559         option_values.format_bps = -1;
560         option_values.format_sample_rate = -1;
561         option_values.blocksize = -1;
562         option_values.min_residual_partition_order = -1;
563         option_values.max_residual_partition_order = -1;
564         option_values.rice_parameter_search_dist = -1;
565         option_values.requested_seek_points[0] = '\0';
566         option_values.num_requested_seek_points = -1;
567         option_values.cuesheet_filename = 0;
568         option_values.cued_seekpoints = true;
569
570         option_values.num_files = 0;
571         option_values.filenames = 0;
572
573         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
574                 return false;
575
576         option_values.debug.disable_constant_subframes = false;
577         option_values.debug.disable_fixed_subframes = false;
578         option_values.debug.disable_verbatim_subframes = false;
579
580         return true;
581 }
582
583 int parse_options(int argc, char *argv[])
584 {
585         int short_option;
586         int option_index = 1;
587         FLAC__bool had_error = false;
588         const char *short_opts = "0123456789ab:cdeFhHl:mMo:pP:q:r:sS:tT:vV";
589
590         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
591                 switch (short_option) {
592                         case 0: /* long option with no equivalent short option */
593                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
594                                 break;
595                         case '?':
596                         case ':':
597                                 had_error = true;
598                                 break;
599                         default: /* short option */
600                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
601                                 break;
602                 }
603         }
604
605         if(had_error) {
606                 return 1;
607         }
608
609         FLAC__ASSERT(share__optind <= argc);
610
611         option_values.num_files = argc - share__optind;
612
613         if(option_values.num_files > 0) {
614                 unsigned i = 0;
615                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
616                         die("out of memory allocating space for file names list");
617                 while(share__optind < argc)
618                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
619         }
620
621         return 0;
622 }
623
624 int parse_option(int short_option, const char *long_option, const char *option_argument)
625 {
626         char *p;
627
628         if(short_option == 0) {
629                 FLAC__ASSERT(0 != long_option);
630                 if(0 == strcmp(long_option, "delete-input-file")) {
631                         option_values.delete_input = true;
632                 }
633                 else if(0 == strcmp(long_option, "output-prefix")) {
634                         FLAC__ASSERT(0 != option_argument);
635                         option_values.output_prefix = option_argument;
636                 }
637                 else if(0 == strcmp(long_option, "skip")) {
638                         FLAC__ASSERT(0 != option_argument);
639                         option_values.skip_specification = option_argument;
640                 }
641                 else if(0 == strcmp(long_option, "until")) {
642                         FLAC__ASSERT(0 != option_argument);
643                         option_values.until_specification = option_argument;
644                 }
645                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
646                         option_values.replaygain_synthesis_spec.apply = true;
647                         if (0 != option_argument) {
648                                 char *p;
649                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
650                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
651                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
652                                 for ( ; *p; p++) {
653                                         if (*p == 'a')
654                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
655                                         else if (*p == 't')
656                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
657                                         else if (*p == 'l')
658                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
659                                         else if (*p == 'L')
660                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
661                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
662                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
663                                                 p++;
664                                         }
665                                         else
666                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
667                                 }
668                         }
669                 }
670                 else if(0 == strcmp(long_option, "cuesheet")) {
671                         FLAC__ASSERT(0 != option_argument);
672                         option_values.cuesheet_filename = option_argument;
673                 }
674                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
675                         option_values.cued_seekpoints = false;
676                 }
677                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
678                         option_values.lax = true;
679                         option_values.do_exhaustive_model_search = true;
680                         option_values.do_escape_coding = true;
681                         option_values.do_mid_side = true;
682                         option_values.loose_mid_side = false;
683                         option_values.do_qlp_coeff_prec_search = true;
684                         option_values.min_residual_partition_order = 0;
685                         option_values.max_residual_partition_order = 16;
686                         option_values.rice_parameter_search_dist = 0;
687                         option_values.max_lpc_order = 32;
688                 }
689                 else if(0 == strcmp(long_option, "force-aiff-format")) {
690                         option_values.force_aiff_format = true;
691                 }
692                 else if(0 == strcmp(long_option, "force-raw-format")) {
693                         option_values.force_raw_format = true;
694                 }
695                 else if(0 == strcmp(long_option, "lax")) {
696                         option_values.lax = true;
697                 }
698                 else if(0 == strcmp(long_option, "replay-gain")) {
699                         option_values.replay_gain = true;
700                 }
701                 else if(0 == strcmp(long_option, "sector-align")) {
702                         option_values.sector_align = true;
703                 }
704 #ifdef FLAC__HAS_OGG
705                 else if(0 == strcmp(long_option, "ogg")) {
706                         option_values.use_ogg = true;
707                 }
708                 else if(0 == strcmp(long_option, "serial-number")) {
709                         option_values.has_serial_number = true;
710                         option_values.serial_number = atol(option_argument);
711                 }
712 #endif
713                 else if(0 == strcmp(long_option, "endian")) {
714                         FLAC__ASSERT(0 != option_argument);
715                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
716                                 option_values.format_is_big_endian = true;
717                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
718                                 option_values.format_is_big_endian = false;
719                         else
720                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
721                 }
722                 else if(0 == strcmp(long_option, "channels")) {
723                         FLAC__ASSERT(0 != option_argument);
724                         option_values.format_channels = atoi(option_argument);
725                 }
726                 else if(0 == strcmp(long_option, "bps")) {
727                         FLAC__ASSERT(0 != option_argument);
728                         option_values.format_bps = atoi(option_argument);
729                 }
730                 else if(0 == strcmp(long_option, "sample-rate")) {
731                         FLAC__ASSERT(0 != option_argument);
732                         option_values.format_sample_rate = atoi(option_argument);
733                 }
734                 else if(0 == strcmp(long_option, "sign")) {
735                         FLAC__ASSERT(0 != option_argument);
736                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
737                                 option_values.format_is_unsigned_samples = false;
738                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
739                                 option_values.format_is_unsigned_samples = true;
740                         else
741                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
742                 }
743                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
744                         option_values.aopts.do_residual_gnuplot = true;
745                 }
746                 else if(0 == strcmp(long_option, "residual-text")) {
747                         option_values.aopts.do_residual_text = true;
748                 }
749                 /*
750                  * negatives
751                  */
752                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
753                         option_values.continue_through_decode_errors = false;
754                 }
755                 else if(0 == strcmp(long_option, "no-silent")) {
756                         option_values.verbose = true;
757                 }
758                 else if(0 == strcmp(long_option, "no-seektable")) {
759                         option_values.num_requested_seek_points = 0;
760                         option_values.requested_seek_points[0] = '\0';
761                 }
762                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
763                         option_values.delete_input = false;
764                 }
765                 else if(0 == strcmp(long_option, "no-replay-gain")) {
766                         option_values.replay_gain = false;
767                 }
768                 else if(0 == strcmp(long_option, "no-sector-align")) {
769                         option_values.sector_align = false;
770                 }
771                 else if(0 == strcmp(long_option, "no-lax")) {
772                         option_values.lax = false;
773                 }
774 #ifdef FLAC__HAS_OGG
775                 else if(0 == strcmp(long_option, "no-ogg")) {
776                         option_values.use_ogg = false;
777                 }
778 #endif
779                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
780                         option_values.do_exhaustive_model_search = false;
781                 }
782                 else if(0 == strcmp(long_option, "no-mid-side")) {
783                         option_values.do_mid_side = option_values.loose_mid_side = false;
784                 }
785                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
786                         option_values.loose_mid_side = option_values.do_mid_side = false;
787                 }
788                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
789                         option_values.do_qlp_coeff_prec_search = false;
790                 }
791                 else if(0 == strcmp(long_option, "no-padding")) {
792                         option_values.padding = -1;
793                 }
794                 else if(0 == strcmp(long_option, "no-verify")) {
795                         option_values.verify = false;
796                 }
797                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
798                         option_values.aopts.do_residual_gnuplot = false;
799                 }
800                 else if(0 == strcmp(long_option, "no-residual-text")) {
801                         option_values.aopts.do_residual_text = false;
802                 }
803                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
804                         option_values.debug.disable_constant_subframes = true;
805                 }
806                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
807                         option_values.debug.disable_fixed_subframes = true;
808                 }
809                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
810                         option_values.debug.disable_verbatim_subframes = true;
811                 }
812         }
813         else {
814                 const char *violation;
815                 switch(short_option) {
816                         case 'h':
817                                 option_values.show_help = true;
818                                 break;
819                         case 'H':
820                                 option_values.show_explain = true;
821                                 break;
822                         case 'v':
823                                 option_values.show_version = true;
824                                 break;
825                         case 'd':
826                                 option_values.mode_decode = true;
827                                 break;
828                         case 'a':
829                                 option_values.mode_decode = true;
830                                 option_values.analyze = true;
831                                 break;
832                         case 't':
833                                 option_values.mode_decode = true;
834                                 option_values.test_only = true;
835                                 break;
836                         case 'c':
837                                 option_values.force_to_stdout = true;
838                                 break;
839                         case 's':
840                                 option_values.verbose = false;
841                                 break;
842                         case 'o':
843                                 FLAC__ASSERT(0 != option_argument);
844                                 option_values.cmdline_forced_outfilename = option_argument;
845                                 break;
846                         case 'F':
847                                 option_values.continue_through_decode_errors = true;
848                                 break;
849                         case 'T':
850                                 FLAC__ASSERT(0 != option_argument);
851                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
852                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
853                                 break;
854                         case '0':
855                                 option_values.do_exhaustive_model_search = false;
856                                 option_values.do_escape_coding = false;
857                                 option_values.do_mid_side = false;
858                                 option_values.loose_mid_side = false;
859                                 option_values.qlp_coeff_precision = 0;
860                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
861                                 option_values.rice_parameter_search_dist = 0;
862                                 option_values.max_lpc_order = 0;
863                                 break;
864                         case '1':
865                                 option_values.do_exhaustive_model_search = false;
866                                 option_values.do_escape_coding = false;
867                                 option_values.do_mid_side = true;
868                                 option_values.loose_mid_side = true;
869                                 option_values.qlp_coeff_precision = 0;
870                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
871                                 option_values.rice_parameter_search_dist = 0;
872                                 option_values.max_lpc_order = 0;
873                                 break;
874                         case '2':
875                                 option_values.do_exhaustive_model_search = false;
876                                 option_values.do_escape_coding = false;
877                                 option_values.do_mid_side = true;
878                                 option_values.loose_mid_side = false;
879                                 option_values.qlp_coeff_precision = 0;
880                                 option_values.min_residual_partition_order = 0;
881                                 option_values.max_residual_partition_order = 3;
882                                 option_values.rice_parameter_search_dist = 0;
883                                 option_values.max_lpc_order = 0;
884                                 break;
885                         case '3':
886                                 option_values.do_exhaustive_model_search = false;
887                                 option_values.do_escape_coding = false;
888                                 option_values.do_mid_side = false;
889                                 option_values.loose_mid_side = false;
890                                 option_values.qlp_coeff_precision = 0;
891                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
892                                 option_values.rice_parameter_search_dist = 0;
893                                 option_values.max_lpc_order = 6;
894                                 break;
895                         case '4':
896                                 option_values.do_exhaustive_model_search = false;
897                                 option_values.do_escape_coding = false;
898                                 option_values.do_mid_side = true;
899                                 option_values.loose_mid_side = true;
900                                 option_values.qlp_coeff_precision = 0;
901                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
902                                 option_values.rice_parameter_search_dist = 0;
903                                 option_values.max_lpc_order = 8;
904                                 break;
905                         case '5':
906                                 option_values.do_exhaustive_model_search = false;
907                                 option_values.do_escape_coding = false;
908                                 option_values.do_mid_side = true;
909                                 option_values.loose_mid_side = false;
910                                 option_values.qlp_coeff_precision = 0;
911                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
912                                 option_values.rice_parameter_search_dist = 0;
913                                 option_values.max_lpc_order = 8;
914                                 break;
915                         case '6':
916                                 option_values.do_exhaustive_model_search = false;
917                                 option_values.do_escape_coding = false;
918                                 option_values.do_mid_side = true;
919                                 option_values.loose_mid_side = false;
920                                 option_values.qlp_coeff_precision = 0;
921                                 option_values.min_residual_partition_order = 0;
922                                 option_values.max_residual_partition_order = 4;
923                                 option_values.rice_parameter_search_dist = 0;
924                                 option_values.max_lpc_order = 8;
925                                 break;
926                         case '7':
927                                 option_values.do_exhaustive_model_search = true;
928                                 option_values.do_escape_coding = false;
929                                 option_values.do_mid_side = true;
930                                 option_values.loose_mid_side = false;
931                                 option_values.qlp_coeff_precision = 0;
932                                 option_values.min_residual_partition_order = 0;
933                                 option_values.max_residual_partition_order = 6;
934                                 option_values.rice_parameter_search_dist = 0;
935                                 option_values.max_lpc_order = 8;
936                                 break;
937                         case '8':
938                                 option_values.do_exhaustive_model_search = true;
939                                 option_values.do_escape_coding = false;
940                                 option_values.do_mid_side = true;
941                                 option_values.loose_mid_side = false;
942                                 option_values.qlp_coeff_precision = 0;
943                                 option_values.min_residual_partition_order = 0;
944                                 option_values.max_residual_partition_order = 6;
945                                 option_values.rice_parameter_search_dist = 0;
946                                 option_values.max_lpc_order = 12;
947                                 break;
948                         case '9':
949                                 return usage_error("ERROR: compression level '9' is reserved\n");
950                         case 'V':
951                                 option_values.verify = true;
952                                 break;
953                         case 'S':
954                                 FLAC__ASSERT(0 != option_argument);
955                                 if(option_values.num_requested_seek_points < 0)
956                                         option_values.num_requested_seek_points = 0;
957                                 option_values.num_requested_seek_points++;
958                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
959                                         return usage_error("ERROR: too many seekpoints requested\n");
960                                 }
961                                 else {
962                                         strcat(option_values.requested_seek_points, option_argument);
963                                         strcat(option_values.requested_seek_points, ";");
964                                 }
965                                 break;
966                         case 'P':
967                                 FLAC__ASSERT(0 != option_argument);
968                                 option_values.padding = atoi(option_argument);
969                                 if(option_values.padding < 0)
970                                         return usage_error("ERROR: argument to -P must be >= 0\n");
971                                 break;
972                         case 'b':
973                                 FLAC__ASSERT(0 != option_argument);
974                                 option_values.blocksize = atoi(option_argument);
975                                 break;
976                         case 'e':
977                                 option_values.do_exhaustive_model_search = true;
978                                 break;
979                         case 'E':
980                                 option_values.do_escape_coding = true;
981                                 break;
982                         case 'l':
983                                 FLAC__ASSERT(0 != option_argument);
984                                 option_values.max_lpc_order = atoi(option_argument);
985                                 break;
986                         case 'm':
987                                 option_values.do_mid_side = true;
988                                 option_values.loose_mid_side = false;
989                                 break;
990                         case 'M':
991                                 option_values.loose_mid_side = option_values.do_mid_side = true;
992                                 break;
993                         case 'p':
994                                 option_values.do_qlp_coeff_prec_search = true;
995                                 break;
996                         case 'q':
997                                 FLAC__ASSERT(0 != option_argument);
998                                 option_values.qlp_coeff_precision = atoi(option_argument);
999                                 break;
1000                         case 'r':
1001                                 FLAC__ASSERT(0 != option_argument);
1002                                 p = strchr(option_argument, ',');
1003                                 if(0 == p) {
1004                                         option_values.min_residual_partition_order = 0;
1005                                         option_values.max_residual_partition_order = atoi(option_argument);
1006                                 }
1007                                 else {
1008                                         option_values.min_residual_partition_order = atoi(option_argument);
1009                                         option_values.max_residual_partition_order = atoi(++p);
1010                                 }
1011                                 break;
1012                         case 'R':
1013                                 FLAC__ASSERT(0 != option_argument);
1014                                 option_values.rice_parameter_search_dist = atoi(option_argument);
1015                                 break;
1016                         default:
1017                                 FLAC__ASSERT(0);
1018                 }
1019         }
1020
1021         return 0;
1022 }
1023
1024 void free_options()
1025 {
1026         unsigned i;
1027         if(0 != option_values.filenames) {
1028                 for(i = 0; i < option_values.num_files; i++) {
1029                         if(0 != option_values.filenames[i])
1030                                 free(option_values.filenames[i]);
1031                 }
1032                 free(option_values.filenames);
1033         }
1034         if(0 != option_values.vorbis_comment)
1035                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1036 }
1037
1038 int usage_error(const char *message, ...)
1039 {
1040         va_list args;
1041
1042         FLAC__ASSERT(0 != message);
1043
1044         va_start(args, message);
1045
1046         (void) vfprintf(stderr, message, args);
1047
1048         va_end(args);
1049
1050         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1051
1052         return 1;
1053 }
1054
1055 void show_version()
1056 {
1057         printf("flac %s\n", FLAC__VERSION_STRING);
1058 }
1059
1060 static void usage_header()
1061 {
1062         printf("===============================================================================\n");
1063         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1064         printf("Copyright (C) 2000,2001,2002,2003  Josh Coalson\n");
1065         printf("\n");
1066         printf("This program is free software; you can redistribute it and/or\n");
1067         printf("modify it under the terms of the GNU General Public License\n");
1068         printf("as published by the Free Software Foundation; either version 2\n");
1069         printf("of the License, or (at your option) any later version.\n");
1070         printf("\n");
1071         printf("This program is distributed in the hope that it will be useful,\n");
1072         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1073         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1074         printf("GNU General Public License for more details.\n");
1075         printf("\n");
1076         printf("You should have received a copy of the GNU General Public License\n");
1077         printf("along with this program; if not, write to the Free Software\n");
1078         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1079         printf("===============================================================================\n");
1080 }
1081
1082 static void usage_summary()
1083 {
1084         printf("Usage:\n");
1085         printf("\n");
1086         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1087         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1088         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1089         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1090         printf("\n");
1091 }
1092
1093 void short_usage()
1094 {
1095         usage_header();
1096         printf("\n");
1097         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1098         printf("instructions use 'flac --explain'\n");
1099         printf("\n");
1100         printf("To encode:\n");
1101         printf("  flac [-#] [INPUTFILE [...]]\n");
1102         printf("\n");
1103         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1104         printf("\n");
1105         printf("To decode:\n");
1106         printf("  flac -d [INPUTFILE [...]]\n");
1107         printf("\n");
1108         printf("To test:\n");
1109         printf("  flac -t [INPUTFILE [...]]\n");
1110 }
1111
1112 void show_help()
1113 {
1114         usage_header();
1115         usage_summary();
1116         printf("general options:\n");
1117         printf("  -v, --version                Show the flac version number\n");
1118         printf("  -h, --help                   Show this screen\n");
1119         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1120         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1121         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1122         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1123         printf("  -c, --stdout                 Write output to stdout\n");
1124         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1125         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1126         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1127         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1128         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1129         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1130 #ifdef FLAC__HAS_OGG
1131         printf("      --ogg                    Use Ogg as transport layer\n");
1132         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1133 #endif
1134         printf("analysis options:\n");
1135         printf("      --residual-text          Include residual signal in text output\n");
1136         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1137         printf("decoding options:\n");
1138         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1139         printf("encoding options:\n");
1140         printf("  -V, --verify                 Verify a correct encoding\n");
1141         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1142         printf("      --sector-align           Align multiple files on sector boundaries\n");
1143         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1144         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1145         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1146         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1147         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1148         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1149         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1150         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1151         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1152         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1153         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1154         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1155         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1156         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1157         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1158         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1159         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1160         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1161         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1162         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1163         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1164         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1165         printf("format options:\n");
1166         printf("      --endian={big|little}    Set byte order for samples\n");
1167         printf("      --channels=#             Number of channels\n");
1168         printf("      --bps=#                  Number of bits per sample\n");
1169         printf("      --sample-rate=#          Sample rate in Hz\n");
1170         printf("      --sign={signed|unsigned} Sign of samples\n");
1171         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1172         printf("      --force-raw-format       Treat input or output as raw samples\n");
1173         printf("negative options:\n");
1174         printf("      --no-adaptive-mid-side\n");
1175         printf("      --no-decode-through-errors\n");
1176         printf("      --no-delete-input-file\n");
1177         printf("      --no-exhaustive-model-search\n");
1178         printf("      --no-lax\n");
1179         printf("      --no-mid-side\n");
1180 #ifdef FLAC__HAS_OGG
1181         printf("      --no-ogg\n");
1182 #endif
1183         printf("      --no-padding\n");
1184         printf("      --no-qlp-coeff-prec-search\n");
1185         printf("      --no-replay-gain\n");
1186         printf("      --no-residual-gnuplot\n");
1187         printf("      --no-residual-text\n");
1188         printf("      --no-sector-align\n");
1189         printf("      --no-seektable\n");
1190         printf("      --no-silent\n");
1191         printf("      --no-verify\n");
1192 }
1193
1194 void show_explain()
1195 {
1196         usage_header();
1197         usage_summary();
1198         printf("For encoding:\n");
1199         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1200         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1201         printf("For decoding, the reverse is true.\n");
1202         printf("\n");
1203         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1204         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1205         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1206         printf("instead of:\n");
1207         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1208         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1209         printf("WAVE/AIFF header contents when necessary.\n");
1210         printf("\n");
1211         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1212         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1213         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1214         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1215         printf("files using -fr.\n");
1216         printf("\n");
1217         printf("general options:\n");
1218         printf("  -v, --version                Show the flac version number\n");
1219         printf("  -h, --help                   Show basic usage a list of all options\n");
1220         printf("  -H, --explain                Show this screen\n");
1221         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1222         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1223         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1224         printf("  -c, --stdout                 Write output to stdout\n");
1225         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1226         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1227         printf("                               changes the extension.  May only be used when\n");
1228         printf("                               encoding a single file.  May not be used in\n");
1229         printf("                               conjunction with --output-prefix.\n");
1230         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1231         printf("                               STRING.  This can be useful for encoding or\n");
1232         printf("                               decoding files to a different directory.  Make\n");
1233         printf("                               sure if your STRING is a path name that it ends\n");
1234         printf("                               with a '/' slash.\n");
1235         printf("      --delete-input-file      Automatically delete the input file after a\n");
1236         printf("                               successful encode or decode.  If there was an\n");
1237         printf("                               error (including a verify error) the input file\n");
1238         printf("                               is left intact.\n");
1239         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1240         printf("                               be used both for encoding and decoding.  The\n");
1241         printf("                               alternative form mm:ss.ss can be used to specify\n");
1242         printf("                               minutes, seconds, and fractions of a second.\n");
1243         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1244         printf("                               file.  The given sample number is not included\n");
1245         printf("                               in the decoded output.  The alternative form\n");
1246         printf("                               mm:ss.ss can be used to specify minutes,\n");
1247         printf("                               seconds, and fractions of a second.  If a `+'\n");
1248         printf("                               sign is at the beginning, the --until point is\n");
1249         printf("                               relative to the --skip point.  If a `-' sign is\n");
1250         printf("                               at the beginning, the --until point is relative\n");
1251         printf("                               to end of the audio.\n");
1252 #ifdef FLAC__HAS_OGG
1253         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1254         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1255         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1256         printf("                               resulting file should have an '.ogg' extension\n");
1257         printf("                               and will still be decodable by flac.  When\n");
1258         printf("                               decoding, force the input to be treated as\n");
1259         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1260         printf("                               from stdin or when the filename does not end in\n");
1261         printf("                               '.ogg'.\n");
1262         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1263         printf("                               encoding and no serial number is given, flac\n");
1264         printf("                               uses '0'.  When decoding and no number is\n");
1265         printf("                               given, flac uses the serial number of the first\n");
1266         printf("                               page.\n");
1267 #endif
1268         printf("analysis options:\n");
1269         printf("      --residual-text          Include residual signal in text output.  This\n");
1270         printf("                               will make the file very big, much larger than\n");
1271         printf("                               even the decoded file.\n");
1272         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1273         printf("                               of each subframe\n");
1274         printf("decoding options:\n");
1275         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1276         printf("                               and removes the partially decoded file if it\n");
1277         printf("                               encounters a bitstream error.  With -F, errors\n");
1278         printf("                               are still printed but flac will continue\n");
1279         printf("                               decoding to completion.  Note that errors may\n");
1280         printf("                               cause the decoded audio to be missing some\n");
1281         printf("                               samples or have silent sections.\n");
1282         printf("encoding options:\n");
1283         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1284         printf("                               output in parallel and comparing to the\n");
1285         printf("                               original\n");
1286         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1287         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1288         printf("                               on sector boundaries.\n");
1289         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1290         printf("                               comments.  Title gains/peaks will be computed\n");
1291         printf("                               for each file, and an album gain/peak will be\n");
1292         printf("                               computed for all files.  All input files must\n");
1293         printf("                               have the same resolution, sample rate, and\n");
1294         printf("                               number of channels.  The sample rate must be\n");
1295         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1296         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1297         printf("                               few extra bytes in the PADDING block.\n");
1298         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1299         printf("                               a CUESHEET metadata block.  This option may only\n");
1300         printf("                               be used when encoding a single file.  A\n");
1301         printf("                               seekpoint will be added for each index point in\n");
1302         printf("                               the cuesheet to the SEEKTABLE unless\n");
1303         printf("                               --no-cued-seekpoints is specified.\n");
1304         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1305         printf("                               comment if necessary.  This option may appear\n");
1306         printf("                               more than once to add several comments.  NOTE:\n");
1307         printf("                               all tags will be added to all encoded files.\n");
1308         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1309         printf("       #  : a specific sample number for a seek point\n");
1310         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1311         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1312         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1313         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1314         printf("           ified union of all such values.\n");
1315         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1316         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1317         printf("           input size before starting.\n");
1318         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1319         printf("           either no seek point entered (if the input size is determinable\n");
1320         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1321         printf("           determinable)\n");
1322         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1323         printf("                               block of the given length (in bytes) after the\n");
1324         printf("                               STREAMINFO block.  This is useful if you plan\n");
1325         printf("                               to tag the file later with an APPLICATION\n");
1326         printf("                               block; instead of having to rewrite the entire\n");
1327         printf("                               file later just to insert your block, you can\n");
1328         printf("                               write directly over the PADDING block.  Note\n");
1329         printf("                               that the total length of the PADDING block will\n");
1330         printf("                               be 4 bytes longer than the length given because\n");
1331         printf("                               of the 4 metadata block header bytes.  You can\n");
1332         printf("                               force no PADDING block at all to be written with\n");
1333         printf("                               --no-padding.  The encoder writes a PADDING\n");
1334         printf("                               block of 4096 bytes by default.\n");
1335         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1336         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1337         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1338         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1339         printf("                               used)\n");
1340         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1341         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1342         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1343         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1344         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1345         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1346         printf("                                     -5 is the default setting\n");
1347         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1348         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1349         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1350         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1351         printf("                                     (stereo only)\n");
1352         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1353         printf("                                     (stereo only)\n");
1354         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1355         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1356         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1357         printf("                                     quantization (expensive!); overrides -q;\n");
1358         printf("                                     does nothing if using -l 0\n");
1359         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1360         printf("                                     linear-predictor coefficients; 0 => let\n");
1361         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1362         printf("                                     default is -q 0)\n");
1363         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1364         printf("                                     (# is 0..16; min defaults to 0; the\n");
1365         printf("                                     default is -r 0; above 4 doesn't usually\n");
1366         printf("                                     help much)\n");
1367         printf("format options:\n");
1368         printf("      --endian={big|little}    Set byte order for samples\n");
1369         printf("      --channels=#             Number of channels\n");
1370         printf("      --bps=#                  Number of bits per sample\n");
1371         printf("      --sample-rate=#          Sample rate in Hz\n");
1372         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1373         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1374         printf("                               option is not needed if the output filename (as\n");
1375         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1376         printf("                               has no effect when encoding since input AIFF is\n");
1377         printf("                               auto-detected.\n");
1378         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1379         printf("                               decoding) to be treated as raw samples\n");
1380         printf("negative options:\n");
1381         printf("      --no-adaptive-mid-side\n");
1382         printf("      --no-decode-through-errors\n");
1383         printf("      --no-delete-input-file\n");
1384         printf("      --no-exhaustive-model-search\n");
1385         printf("      --no-lax\n");
1386         printf("      --no-mid-side\n");
1387 #ifdef FLAC__HAS_OGG
1388         printf("      --no-ogg\n");
1389 #endif
1390         printf("      --no-padding\n");
1391         printf("      --no-qlp-coeff-prec-search\n");
1392         printf("      --no-residual-gnuplot\n");
1393         printf("      --no-residual-text\n");
1394         printf("      --no-sector-align\n");
1395         printf("      --no-seektable\n");
1396         printf("      --no-silent\n");
1397         printf("      --no-verify\n");
1398 }
1399
1400 void
1401 format_mistake(const char *infilename, const char *wrong, const char *right)
1402 {
1403         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1404 }
1405
1406 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1407 {
1408         FILE *encode_infile;
1409         FLAC__byte lookahead[12];
1410         unsigned lookahead_length = 0;
1411         FileFormat fmt= RAW;
1412         int retval;
1413         long infilesize;
1414         encode_options_t common_options;
1415         const char *outfilename = get_encoded_outfilename(infilename);
1416
1417         if(0 == outfilename) {
1418                 fprintf(stderr, "ERROR: filename too long: %s", infilename);
1419                 return 1;
1420         }
1421
1422         if(0 == strcmp(infilename, "-")) {
1423                 infilesize = -1;
1424                 encode_infile = grabbag__file_get_binary_stdin();
1425         }
1426         else {
1427                 infilesize = grabbag__file_get_filesize(infilename);
1428                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1429                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1430                         return 1;
1431                 }
1432         }
1433
1434         if(!option_values.force_raw_format) {
1435                 /* first set format based on name */
1436                 if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1437                         fmt= WAV;
1438                 else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1439                         fmt= AIF;
1440                 else if(strlen(infilename) >= 5 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1441                         fmt= AIF;
1442
1443                 /* attempt to guess the file type based on the first 12 bytes */
1444                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1445                         if(fmt != RAW)
1446                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1447                         fmt= RAW;
1448                 }
1449                 else {
1450                         if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1451                                 fmt= WAV;
1452                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1453                                 fmt= AIF;
1454                         else {
1455                                 if(fmt != RAW)
1456                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1457                                 fmt= RAW;
1458                         }
1459                 }
1460         }
1461
1462         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1463                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1464                 return 1;
1465         }
1466
1467         if(fmt == RAW) {
1468                 if(option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0 || option_values.format_channels < 0 || option_values.format_bps < 0 || option_values.format_sample_rate < 0)
1469                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1470         }
1471
1472         if(encode_infile == stdin || option_values.force_to_stdout) {
1473                 if(option_values.replay_gain)
1474                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1475         }
1476
1477         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1478                 return usage_error("ERROR: invalid value for --skip\n");
1479
1480         if(!flac__utils_parse_skip_until_specification(option_values.until_specification, &common_options.until_specification)) /*@@@ more checks: no + without --skip, no - unless known total_samples_to_{en,de}code */
1481                 return usage_error("ERROR: invalid value for --until\n");
1482         /* if there is no "--until" we want to default to "--until=-0" */
1483         if(0 == option_values.until_specification)
1484                 common_options.until_specification.is_relative = true;
1485
1486         common_options.verbose = option_values.verbose;
1487         common_options.verify = option_values.verify;
1488 #ifdef FLAC__HAS_OGG
1489         common_options.use_ogg = option_values.use_ogg;
1490         common_options.has_serial_number = option_values.has_serial_number;
1491         common_options.serial_number = option_values.serial_number;
1492 #endif
1493         common_options.lax = option_values.lax;
1494         common_options.do_mid_side = option_values.do_mid_side;
1495         common_options.loose_mid_side = option_values.loose_mid_side;
1496         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1497         common_options.do_escape_coding = option_values.do_escape_coding;
1498         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1499         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1500         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1501         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1502         common_options.max_lpc_order = option_values.max_lpc_order;
1503         common_options.blocksize = (unsigned)option_values.blocksize;
1504         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1505         common_options.padding = option_values.padding;
1506         common_options.requested_seek_points = option_values.requested_seek_points;
1507         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1508         common_options.cuesheet_filename = option_values.cuesheet_filename;
1509         common_options.cued_seekpoints = option_values.cued_seekpoints;
1510         common_options.is_first_file = is_first_file;
1511         common_options.is_last_file = is_last_file;
1512         common_options.align_reservoir = align_reservoir;
1513         common_options.align_reservoir_samples = &align_reservoir_samples;
1514         common_options.replay_gain = option_values.replay_gain;
1515         common_options.sector_align = option_values.sector_align;
1516         common_options.vorbis_comment = option_values.vorbis_comment;
1517         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1518         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1519         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1520
1521         if(fmt == RAW) {
1522                 raw_encode_options_t options;
1523
1524                 options.common = common_options;
1525                 options.is_big_endian = option_values.format_is_big_endian;
1526                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1527                 options.channels = option_values.format_channels;
1528                 options.bps = option_values.format_bps;
1529                 options.sample_rate = option_values.format_sample_rate;
1530
1531                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1532         }
1533         else {
1534                 wav_encode_options_t options;
1535
1536                 options.common = common_options;
1537
1538                 if(fmt == AIF)
1539                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1540                 else
1541                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1542         }
1543
1544         if(retval == 0 && strcmp(infilename, "-")) {
1545                 if(strcmp(outfilename, "-")) {
1546                         if(option_values.replay_gain) {
1547                                 float title_gain, title_peak;
1548                                 const char *error;
1549                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1550                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1551                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1552                                 }
1553                         }
1554                         grabbag__file_copy_metadata(infilename, outfilename);
1555                 }
1556                 if(option_values.delete_input)
1557                         unlink(infilename);
1558         }
1559
1560         return retval;
1561 }
1562
1563 int decode_file(const char *infilename)
1564 {
1565         int retval;
1566         FLAC__bool treat_as_ogg = false;
1567         decode_options_t common_options;
1568         const char *outfilename = get_decoded_outfilename(infilename);
1569
1570         if(0 == outfilename) {
1571                 fprintf(stderr, "ERROR: filename too long: %s", infilename);
1572                 return 1;
1573         }
1574
1575         if(!option_values.test_only && !option_values.analyze) {
1576                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1577                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1578         }
1579
1580         if(option_values.use_ogg)
1581                 treat_as_ogg = true;
1582         else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1583                 treat_as_ogg = true;
1584         else
1585                 treat_as_ogg = false;
1586
1587 #ifndef FLAC__HAS_OGG
1588         if(treat_as_ogg) {
1589                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1590                 return 1;
1591         }
1592 #endif
1593
1594         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1595                 return usage_error("ERROR: invalid value for --skip\n");
1596
1597         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 */
1598                 return usage_error("ERROR: invalid value for --until\n");
1599         /* if there is no "--until" we want to default to "--until=-0" */
1600         if(0 == option_values.until_specification)
1601                 common_options.until_specification.is_relative = true;
1602
1603         common_options.verbose = option_values.verbose;
1604         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1605         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1606 #ifdef FLAC__HAS_OGG
1607         common_options.is_ogg = treat_as_ogg;
1608         common_options.use_first_serial_number = !option_values.has_serial_number;
1609         common_options.serial_number = option_values.serial_number;
1610 #endif
1611
1612         if(!option_values.force_raw_format) {
1613                 wav_decode_options_t options;
1614
1615                 options.common = common_options;
1616
1617                 if(
1618                         option_values.force_aiff_format ||
1619                         (strlen(outfilename) >= 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1620                         (strlen(outfilename) >= 5 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1621                 )
1622                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1623                 else
1624                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1625         }
1626         else {
1627                 raw_decode_options_t options;
1628
1629                 options.common = common_options;
1630                 options.is_big_endian = option_values.format_is_big_endian;
1631                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1632
1633                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1634         }
1635
1636         if(retval == 0 && strcmp(infilename, "-")) {
1637                 if(strcmp(outfilename, "-"))
1638                         grabbag__file_copy_metadata(infilename, outfilename);
1639                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1640                         unlink(infilename);
1641         }
1642
1643         return retval;
1644 }
1645
1646 const char *get_encoded_outfilename(const char *infilename)
1647 {
1648         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1649         return get_outfilename(infilename, suffix);
1650 }
1651
1652 const char *get_decoded_outfilename(const char *infilename)
1653 {
1654         const char *suffix;
1655         if(option_values.analyze) {
1656                 suffix = ".ana";
1657         }
1658         else if(option_values.force_raw_format) {
1659                 suffix = ".raw";
1660         }
1661         else if(option_values.force_aiff_format) {
1662                 suffix = ".aiff";
1663         }
1664         else {
1665                 suffix = ".wav";
1666         }
1667         return get_outfilename(infilename, suffix);
1668 }
1669
1670 const char *get_outfilename(const char *infilename, const char *suffix)
1671 {
1672         if(0 == option_values.cmdline_forced_outfilename) {
1673                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1674
1675                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1676                         strcpy(buffer, "-");
1677                 }
1678                 else {
1679                         char *p;
1680                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
1681                                 return 0;
1682                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
1683                                 return 0;
1684                         if(0 == (p = strrchr(buffer, '.'))) {
1685                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1686                                         return 0;
1687                         }
1688                         else {
1689                                 if(0 == strcmp(p, suffix)) {
1690                                         *p = '\0';
1691                                         if (flac__strlcat(buffer, "_new", sizeof buffer) >= sizeof buffer)
1692                                                 return 0;
1693                                 }
1694                                 else {
1695                                         *p = '\0';
1696                                 }
1697                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1698                                         return 0;
1699                         }
1700                 }
1701                 return buffer;
1702         }
1703         else
1704                 return option_values.cmdline_forced_outfilename;
1705 }
1706
1707 void die(const char *message)
1708 {
1709         FLAC__ASSERT(0 != message);
1710         fprintf(stderr, "ERROR: %s\n", message);
1711         exit(1);
1712 }
1713
1714 char *local_strdup(const char *source)
1715 {
1716         char *ret;
1717         FLAC__ASSERT(0 != source);
1718         if(0 == (ret = strdup(source)))
1719                 die("out of memory during strdup()");
1720         return ret;
1721 }