print error if output file already exists, instead of overwriting by default; add...
[flac.git] / src / flac / main.c
1 /* flac - Command-line FLAC encoder/decoder
2  * Copyright (C) 2000,2001,2002,2003,2004  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         { "force"            , share__no_argument, 0, 'f' },
97         { "delete-input-file", share__no_argument, 0, 0 },
98         { "output-prefix"    , share__required_argument, 0, 0 },
99         { "output-name"      , share__required_argument, 0, 'o' },
100         { "skip"             , share__required_argument, 0, 0 },
101         { "until"            , share__required_argument, 0, 0 },
102
103         /*
104          * decoding options
105          */
106         { "decode-through-errors", share__no_argument, 0, 'F' },
107         { "apply-replaygain-which-is-not-lossless", share__optional_argument, 0, 0 }, /* undocumented */
108
109         /*
110          * encoding options
111          */
112         { "cuesheet"                  , share__required_argument, 0, 0 },
113         { "no-cued-seekpoints"        , share__no_argument, 0, 0 },
114         { "tag"                       , share__required_argument, 0, 'T' },
115         { "compression-level-0"       , share__no_argument, 0, '0' },
116         { "compression-level-1"       , share__no_argument, 0, '1' },
117         { "compression-level-2"       , share__no_argument, 0, '2' },
118         { "compression-level-3"       , share__no_argument, 0, '3' },
119         { "compression-level-4"       , share__no_argument, 0, '4' },
120         { "compression-level-5"       , share__no_argument, 0, '5' },
121         { "compression-level-6"       , share__no_argument, 0, '6' },
122         { "compression-level-7"       , share__no_argument, 0, '7' },
123         { "compression-level-8"       , share__no_argument, 0, '8' },
124         { "compression-level-9"       , share__no_argument, 0, '9' },
125         { "best"                      , share__no_argument, 0, '8' },
126         { "fast"                      , share__no_argument, 0, '0' },
127         { "super-secret-totally-impractical-compression-level", share__no_argument, 0, 0 },
128         { "verify"                    , share__no_argument, 0, 'V' },
129         { "force-aiff-format"         , share__no_argument, 0, 0 },
130         { "force-raw-format"          , share__no_argument, 0, 0 },
131         { "lax"                       , share__no_argument, 0, 0 },
132         { "replay-gain"               , share__no_argument, 0, 0 },
133         { "sector-align"              , share__no_argument, 0, 0 },
134         { "seekpoint"                 , share__required_argument, 0, 'S' },
135         { "padding"                   , share__required_argument, 0, 'P' },
136 #ifdef FLAC__HAS_OGG
137         { "ogg"                       , share__no_argument, 0, 0 },
138         { "serial-number"             , share__required_argument, 0, 0 },
139 #endif
140         { "blocksize"                 , share__required_argument, 0, 'b' },
141         { "exhaustive-model-search"   , share__no_argument, 0, 'e' },
142         { "max-lpc-order"             , share__required_argument, 0, 'l' },
143         { "mid-side"                  , share__no_argument, 0, 'm' },
144         { "adaptive-mid-side"         , share__no_argument, 0, 'M' },
145         { "qlp-coeff-precision-search", share__no_argument, 0, 'p' },
146         { "qlp-coeff-precision"       , share__required_argument, 0, 'q' },
147         { "rice-partition-order"      , share__required_argument, 0, 'r' },
148         { "endian"                    , share__required_argument, 0, 0 },
149         { "channels"                  , share__required_argument, 0, 0 },
150         { "bps"                       , share__required_argument, 0, 0 },
151         { "sample-rate"               , share__required_argument, 0, 0 },
152         { "sign"                      , share__required_argument, 0, 0 },
153
154         /*
155          * analysis options
156          */
157         { "residual-gnu-plot", share__no_argument, 0, 0 },
158         { "residual-text", share__no_argument, 0, 0 },
159
160         /*
161          * negatives
162          */
163         { "no-decode-through-errors"  , share__no_argument, 0, 0 },
164         { "no-silent"                 , share__no_argument, 0, 0 },
165         { "no-force"                  , share__no_argument, 0, 0 },
166         { "no-seektable"              , share__no_argument, 0, 0 },
167         { "no-delete-input-file"      , share__no_argument, 0, 0 },
168         { "no-replay-gain"            , share__no_argument, 0, 0 },
169         { "no-sector-align"           , share__no_argument, 0, 0 },
170         { "no-lax"                    , share__no_argument, 0, 0 },
171 #ifdef FLAC__HAS_OGG
172         { "no-ogg"                    , share__no_argument, 0, 0 },
173 #endif
174         { "no-exhaustive-model-search", share__no_argument, 0, 0 },
175         { "no-mid-side"               , share__no_argument, 0, 0 },
176         { "no-adaptive-mid-side"      , share__no_argument, 0, 0 },
177         { "no-qlp-coeff-prec-search"  , share__no_argument, 0, 0 },
178         { "no-padding"                , share__no_argument, 0, 0 },
179         { "no-verify"                 , share__no_argument, 0, 0 },
180         { "no-residual-gnuplot"       , share__no_argument, 0, 0 },
181         { "no-residual-text"          , share__no_argument, 0, 0 },
182         /*
183          * undocumented debugging options for the test suite
184          */
185         { "disable-constant-subframes", share__no_argument, 0, 0 },
186         { "disable-fixed-subframes"   , share__no_argument, 0, 0 },
187         { "disable-verbatim-subframes", share__no_argument, 0, 0 },
188
189         {0, 0, 0, 0}
190 };
191
192
193 /*
194  * global to hold command-line option values
195  */
196
197 static struct {
198         FLAC__bool show_help;
199         FLAC__bool show_explain;
200         FLAC__bool show_version;
201         FLAC__bool mode_decode;
202         FLAC__bool verify;
203         FLAC__bool verbose;
204         FLAC__bool force_file_overwrite;
205         FLAC__bool continue_through_decode_errors;
206         replaygain_synthesis_spec_t replaygain_synthesis_spec;
207         FLAC__bool lax;
208         FLAC__bool test_only;
209         FLAC__bool analyze;
210         FLAC__bool use_ogg;
211         FLAC__bool has_serial_number; /* true iff --serial-number was used */
212         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
213         FLAC__bool do_mid_side;
214         FLAC__bool loose_mid_side;
215         FLAC__bool do_exhaustive_model_search;
216         FLAC__bool do_escape_coding;
217         FLAC__bool do_qlp_coeff_prec_search;
218         FLAC__bool force_to_stdout;
219         FLAC__bool force_aiff_format;
220         FLAC__bool force_raw_format;
221         FLAC__bool delete_input;
222         FLAC__bool replay_gain;
223         FLAC__bool sector_align;
224         const char *cmdline_forced_outfilename;
225         const char *output_prefix;
226         analysis_options aopts;
227         int padding;
228         unsigned max_lpc_order;
229         unsigned qlp_coeff_precision;
230         const char *skip_specification;
231         const char *until_specification;
232         int format_is_big_endian;
233         int format_is_unsigned_samples;
234         int format_channels;
235         int format_bps;
236         int format_sample_rate;
237         int blocksize;
238         int min_residual_partition_order;
239         int max_residual_partition_order;
240         int rice_parameter_search_dist;
241         char requested_seek_points[50000]; /* bad MAGIC NUMBER but buffer overflow is checked */
242         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
243         const char *cuesheet_filename;
244         FLAC__bool cued_seekpoints;
245
246         unsigned num_files;
247         char **filenames;
248
249         FLAC__StreamMetadata *vorbis_comment;
250
251         struct {
252                 FLAC__bool disable_constant_subframes;
253                 FLAC__bool disable_fixed_subframes;
254                 FLAC__bool disable_verbatim_subframes;
255         } debug;
256 } option_values;
257
258
259 /*
260  * miscellaneous globals
261  */
262
263 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
264 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
265 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
266
267
268 int main(int argc, char *argv[])
269 {
270         int retval = 0;
271
272         setlocale(LC_ALL, "");
273         if(!init_options()) {
274                 fprintf(stderr, "ERROR: allocating memory\n");
275                 retval = 1;
276         }
277         else {
278                 if((retval = parse_options(argc, argv)) == 0)
279                         retval = do_it();
280         }
281
282         free_options();
283
284         return retval;
285 }
286
287 int do_it()
288 {
289         int retval = 0;
290
291         if(option_values.show_version) {
292                 show_version();
293                 return 0;
294         }
295         else if(option_values.show_explain) {
296                 show_explain();
297                 return 0;
298         }
299         else if(option_values.show_help) {
300                 show_help();
301                 return 0;
302         }
303         else {
304                 if(option_values.num_files == 0) {
305                         short_usage();
306                         return 0;
307                 }
308
309                 /*
310                  * tweak options; validate the values
311                  */
312                 if(!option_values.mode_decode) {
313                         if(option_values.blocksize < 0) {
314                                 if(option_values.max_lpc_order == 0)
315                                         option_values.blocksize = 1152;
316                                 else
317                                         option_values.blocksize = 4608;
318                         }
319                         if(option_values.max_residual_partition_order < 0) {
320                                 if(option_values.blocksize <= 1152)
321                                         option_values.max_residual_partition_order = 2;
322                                 else if(option_values.blocksize <= 2304)
323                                         option_values.max_residual_partition_order = 3;
324                                 else if(option_values.blocksize <= 4608)
325                                         option_values.max_residual_partition_order = 3;
326                                 else
327                                         option_values.max_residual_partition_order = 4;
328                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
329                         }
330                         if(option_values.rice_parameter_search_dist < 0) {
331                                 option_values.rice_parameter_search_dist = 0;
332                         }
333                 }
334                 else {
335                         if(option_values.test_only) {
336                                 if(0 != option_values.skip_specification)
337                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
338                                 if(0 != option_values.until_specification)
339                                         return usage_error("ERROR: --until is not allowed in test mode\n");
340                         }
341                 }
342
343                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
344
345                 if(option_values.format_channels >= 0) {
346                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
347                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
348                 }
349                 if(option_values.format_bps >= 0) {
350                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
351                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
352                 }
353                 if(option_values.format_sample_rate >= 0) {
354                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
355                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
356                 }
357                 if(option_values.force_raw_format && option_values.force_aiff_format)
358                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
359                 if(option_values.mode_decode) {
360                         if(!option_values.force_raw_format) {
361                                 if(option_values.format_is_big_endian >= 0)
362                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
363                                 if(option_values.format_is_unsigned_samples >= 0)
364                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
365                         }
366                         if(option_values.format_channels >= 0)
367                                 return usage_error("ERROR: --channels not allowed with --decode\n");
368                         if(option_values.format_bps >= 0)
369                                 return usage_error("ERROR: --bps not allowed with --decode\n");
370                         if(option_values.format_sample_rate >= 0)
371                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
372                 }
373                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
374                         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);
375                 }
376                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
377                         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);
378                 }
379
380                 if(option_values.sector_align) {
381                         if(option_values.mode_decode)
382                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
383                         if(0 != option_values.skip_specification)
384                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
385                         if(0 != option_values.until_specification)
386                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
387                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
388                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
389                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
390                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
391                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
392                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
393                 }
394                 if(option_values.replay_gain) {
395                         if(option_values.force_to_stdout)
396                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
397                         if(option_values.mode_decode)
398                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
399                         if(option_values.format_channels > 2)
400                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
401                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
402                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
403                         /*
404                          * We want to reserve padding space for the ReplayGain
405                          * tags that we will set later, to avoid rewriting the
406                          * whole file.
407                          */
408                         if(option_values.padding < 0) {
409                                 fprintf(stderr, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
410                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
411                         }
412                         else {
413                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
414                         }
415                 }
416                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
417                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
418                 }
419                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
420                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
421                 }
422                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
423                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
424                 }
425         }
426         if(option_values.verbose) {
427                 fprintf(stderr, "\n");
428                 fprintf(stderr, "flac %s, Copyright (C) 2000,2001,2002,2003,2004 Josh Coalson\n", FLAC__VERSION_STRING);
429                 fprintf(stderr, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
430                 fprintf(stderr, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
431
432                 if(!option_values.mode_decode) {
433                         char padopt[16];
434                         if(option_values.padding < 0)
435                                 strcpy(padopt, "-");
436                         else
437                                 sprintf(padopt, " %d", option_values.padding);
438                         fprintf(stderr,
439                                 "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
440                                 option_values.delete_input?" --delete-input-file":"",
441                                 option_values.sector_align?" --sector-align":"",
442                                 option_values.use_ogg?" --ogg":"",
443                                 option_values.lax?" --lax":"",
444                                 padopt,
445                                 (unsigned)option_values.blocksize,
446                                 option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
447                                 option_values.max_lpc_order,
448                                 option_values.do_exhaustive_model_search?" -e":"",
449                                 option_values.do_escape_coding?" -E":"",
450                                 option_values.do_qlp_coeff_prec_search?" -p":"",
451                                 option_values.qlp_coeff_precision,
452                                 (unsigned)option_values.min_residual_partition_order,
453                                 (unsigned)option_values.max_residual_partition_order,
454                                 option_values.verify? " -V":""
455                         );
456                 }
457         }
458
459         if(option_values.mode_decode) {
460                 FLAC__bool first = true;
461
462                 if(option_values.num_files == 0) {
463                         retval = decode_file("-");
464                 }
465                 else {
466                         unsigned i;
467                         if(option_values.num_files > 1)
468                                 option_values.cmdline_forced_outfilename = 0;
469                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
470                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
471                                         continue;
472                                 retval |= decode_file(option_values.filenames[i]);
473                                 first = false;
474                         }
475                 }
476         }
477         else { /* encode */
478                 FLAC__bool first = true;
479
480                 if(option_values.num_files == 0) {
481                         retval = encode_file("-", first, true);
482                 }
483                 else {
484                         unsigned i;
485                         if(option_values.num_files > 1)
486                                 option_values.cmdline_forced_outfilename = 0;
487                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
488                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
489                                         continue;
490                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
491                                 first = false;
492                         }
493                         if(option_values.replay_gain && retval == 0) {
494                                 float album_gain, album_peak;
495                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
496                                 for(i = 0; i < option_values.num_files; i++) {
497                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
498                                         if(0 == outfilename) {
499                                                 fprintf(stderr, "ERROR: filename too long: %s", option_values.filenames[i]);
500                                                 return 1;
501                                         }
502                                         if(0 == strcmp(option_values.filenames[i], "-")) {
503                                                 FLAC__ASSERT(0);
504                                                 /* double protection */
505                                                 fprintf(stderr, "internal error\n");
506                                                 return 2;
507                                         }
508                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
509                                                 fprintf(stderr, "%s: ERROR writing ReplayGain album tags\n", outfilename);
510                                                 retval = 1;
511                                         }
512                                 }
513                         }
514                 }
515         }
516
517         return retval;
518 }
519
520 FLAC__bool init_options()
521 {
522         option_values.show_help = false;
523         option_values.show_explain = false;
524         option_values.mode_decode = false;
525         option_values.verify = false;
526         option_values.verbose = true;
527         option_values.force_file_overwrite = false;
528         option_values.continue_through_decode_errors = false;
529         option_values.replaygain_synthesis_spec.apply = false;
530         option_values.replaygain_synthesis_spec.use_album_gain = true;
531         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
532         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
533         option_values.replaygain_synthesis_spec.preamp = 0.0;
534         option_values.lax = false;
535         option_values.test_only = false;
536         option_values.analyze = false;
537         option_values.use_ogg = false;
538         option_values.has_serial_number = false;
539         option_values.serial_number = 0;
540         option_values.do_mid_side = true;
541         option_values.loose_mid_side = false;
542         option_values.do_exhaustive_model_search = false;
543         option_values.do_escape_coding = false;
544         option_values.do_qlp_coeff_prec_search = false;
545         option_values.force_to_stdout = false;
546         option_values.force_aiff_format = false;
547         option_values.force_raw_format = false;
548         option_values.delete_input = false;
549         option_values.replay_gain = false;
550         option_values.sector_align = false;
551         option_values.cmdline_forced_outfilename = 0;
552         option_values.output_prefix = 0;
553         option_values.aopts.do_residual_text = false;
554         option_values.aopts.do_residual_gnuplot = false;
555         option_values.padding = 4096;
556         option_values.max_lpc_order = 8;
557         option_values.qlp_coeff_precision = 0;
558         option_values.skip_specification = 0;
559         option_values.until_specification = 0;
560         option_values.format_is_big_endian = -1;
561         option_values.format_is_unsigned_samples = -1;
562         option_values.format_channels = -1;
563         option_values.format_bps = -1;
564         option_values.format_sample_rate = -1;
565         option_values.blocksize = -1;
566         option_values.min_residual_partition_order = -1;
567         option_values.max_residual_partition_order = -1;
568         option_values.rice_parameter_search_dist = -1;
569         option_values.requested_seek_points[0] = '\0';
570         option_values.num_requested_seek_points = -1;
571         option_values.cuesheet_filename = 0;
572         option_values.cued_seekpoints = true;
573
574         option_values.num_files = 0;
575         option_values.filenames = 0;
576
577         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
578                 return false;
579
580         option_values.debug.disable_constant_subframes = false;
581         option_values.debug.disable_fixed_subframes = false;
582         option_values.debug.disable_verbatim_subframes = false;
583
584         return true;
585 }
586
587 int parse_options(int argc, char *argv[])
588 {
589         int short_option;
590         int option_index = 1;
591         FLAC__bool had_error = false;
592         const char *short_opts = "0123456789ab:cdefFhHl:mMo:pP:q:r:sS:tT:vV";
593
594         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
595                 switch (short_option) {
596                         case 0: /* long option with no equivalent short option */
597                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
598                                 break;
599                         case '?':
600                         case ':':
601                                 had_error = true;
602                                 break;
603                         default: /* short option */
604                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
605                                 break;
606                 }
607         }
608
609         if(had_error) {
610                 return 1;
611         }
612
613         FLAC__ASSERT(share__optind <= argc);
614
615         option_values.num_files = argc - share__optind;
616
617         if(option_values.num_files > 0) {
618                 unsigned i = 0;
619                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
620                         die("out of memory allocating space for file names list");
621                 while(share__optind < argc)
622                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
623         }
624
625         return 0;
626 }
627
628 int parse_option(int short_option, const char *long_option, const char *option_argument)
629 {
630         char *p;
631
632         if(short_option == 0) {
633                 FLAC__ASSERT(0 != long_option);
634                 if(0 == strcmp(long_option, "delete-input-file")) {
635                         option_values.delete_input = true;
636                 }
637                 else if(0 == strcmp(long_option, "output-prefix")) {
638                         FLAC__ASSERT(0 != option_argument);
639                         option_values.output_prefix = option_argument;
640                 }
641                 else if(0 == strcmp(long_option, "skip")) {
642                         FLAC__ASSERT(0 != option_argument);
643                         option_values.skip_specification = option_argument;
644                 }
645                 else if(0 == strcmp(long_option, "until")) {
646                         FLAC__ASSERT(0 != option_argument);
647                         option_values.until_specification = option_argument;
648                 }
649                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
650                         option_values.replaygain_synthesis_spec.apply = true;
651                         if (0 != option_argument) {
652                                 char *p;
653                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
654                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
655                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
656                                 for ( ; *p; p++) {
657                                         if (*p == 'a')
658                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
659                                         else if (*p == 't')
660                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
661                                         else if (*p == 'l')
662                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
663                                         else if (*p == 'L')
664                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
665                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
666                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
667                                                 p++;
668                                         }
669                                         else
670                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
671                                 }
672                         }
673                 }
674                 else if(0 == strcmp(long_option, "cuesheet")) {
675                         FLAC__ASSERT(0 != option_argument);
676                         option_values.cuesheet_filename = option_argument;
677                 }
678                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
679                         option_values.cued_seekpoints = false;
680                 }
681                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
682                         option_values.lax = true;
683                         option_values.do_exhaustive_model_search = true;
684                         option_values.do_escape_coding = true;
685                         option_values.do_mid_side = true;
686                         option_values.loose_mid_side = false;
687                         option_values.do_qlp_coeff_prec_search = true;
688                         option_values.min_residual_partition_order = 0;
689                         option_values.max_residual_partition_order = 16;
690                         option_values.rice_parameter_search_dist = 0;
691                         option_values.max_lpc_order = 32;
692                 }
693                 else if(0 == strcmp(long_option, "force-aiff-format")) {
694                         option_values.force_aiff_format = true;
695                 }
696                 else if(0 == strcmp(long_option, "force-raw-format")) {
697                         option_values.force_raw_format = true;
698                 }
699                 else if(0 == strcmp(long_option, "lax")) {
700                         option_values.lax = true;
701                 }
702                 else if(0 == strcmp(long_option, "replay-gain")) {
703                         option_values.replay_gain = true;
704                 }
705                 else if(0 == strcmp(long_option, "sector-align")) {
706                         option_values.sector_align = true;
707                 }
708 #ifdef FLAC__HAS_OGG
709                 else if(0 == strcmp(long_option, "ogg")) {
710                         option_values.use_ogg = true;
711                 }
712                 else if(0 == strcmp(long_option, "serial-number")) {
713                         option_values.has_serial_number = true;
714                         option_values.serial_number = atol(option_argument);
715                 }
716 #endif
717                 else if(0 == strcmp(long_option, "endian")) {
718                         FLAC__ASSERT(0 != option_argument);
719                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
720                                 option_values.format_is_big_endian = true;
721                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
722                                 option_values.format_is_big_endian = false;
723                         else
724                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
725                 }
726                 else if(0 == strcmp(long_option, "channels")) {
727                         FLAC__ASSERT(0 != option_argument);
728                         option_values.format_channels = atoi(option_argument);
729                 }
730                 else if(0 == strcmp(long_option, "bps")) {
731                         FLAC__ASSERT(0 != option_argument);
732                         option_values.format_bps = atoi(option_argument);
733                 }
734                 else if(0 == strcmp(long_option, "sample-rate")) {
735                         FLAC__ASSERT(0 != option_argument);
736                         option_values.format_sample_rate = atoi(option_argument);
737                 }
738                 else if(0 == strcmp(long_option, "sign")) {
739                         FLAC__ASSERT(0 != option_argument);
740                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
741                                 option_values.format_is_unsigned_samples = false;
742                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
743                                 option_values.format_is_unsigned_samples = true;
744                         else
745                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
746                 }
747                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
748                         option_values.aopts.do_residual_gnuplot = true;
749                 }
750                 else if(0 == strcmp(long_option, "residual-text")) {
751                         option_values.aopts.do_residual_text = true;
752                 }
753                 /*
754                  * negatives
755                  */
756                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
757                         option_values.continue_through_decode_errors = false;
758                 }
759                 else if(0 == strcmp(long_option, "no-silent")) {
760                         option_values.verbose = true;
761                 }
762                 else if(0 == strcmp(long_option, "no-force")) {
763                         option_values.force_file_overwrite = false;
764                 }
765                 else if(0 == strcmp(long_option, "no-seektable")) {
766                         option_values.num_requested_seek_points = 0;
767                         option_values.requested_seek_points[0] = '\0';
768                 }
769                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
770                         option_values.delete_input = false;
771                 }
772                 else if(0 == strcmp(long_option, "no-replay-gain")) {
773                         option_values.replay_gain = false;
774                 }
775                 else if(0 == strcmp(long_option, "no-sector-align")) {
776                         option_values.sector_align = false;
777                 }
778                 else if(0 == strcmp(long_option, "no-lax")) {
779                         option_values.lax = false;
780                 }
781 #ifdef FLAC__HAS_OGG
782                 else if(0 == strcmp(long_option, "no-ogg")) {
783                         option_values.use_ogg = false;
784                 }
785 #endif
786                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
787                         option_values.do_exhaustive_model_search = false;
788                 }
789                 else if(0 == strcmp(long_option, "no-mid-side")) {
790                         option_values.do_mid_side = option_values.loose_mid_side = false;
791                 }
792                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
793                         option_values.loose_mid_side = option_values.do_mid_side = false;
794                 }
795                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
796                         option_values.do_qlp_coeff_prec_search = false;
797                 }
798                 else if(0 == strcmp(long_option, "no-padding")) {
799                         option_values.padding = -1;
800                 }
801                 else if(0 == strcmp(long_option, "no-verify")) {
802                         option_values.verify = false;
803                 }
804                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
805                         option_values.aopts.do_residual_gnuplot = false;
806                 }
807                 else if(0 == strcmp(long_option, "no-residual-text")) {
808                         option_values.aopts.do_residual_text = false;
809                 }
810                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
811                         option_values.debug.disable_constant_subframes = true;
812                 }
813                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
814                         option_values.debug.disable_fixed_subframes = true;
815                 }
816                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
817                         option_values.debug.disable_verbatim_subframes = true;
818                 }
819         }
820         else {
821                 const char *violation;
822                 switch(short_option) {
823                         case 'h':
824                                 option_values.show_help = true;
825                                 break;
826                         case 'H':
827                                 option_values.show_explain = true;
828                                 break;
829                         case 'v':
830                                 option_values.show_version = true;
831                                 break;
832                         case 'd':
833                                 option_values.mode_decode = true;
834                                 break;
835                         case 'a':
836                                 option_values.mode_decode = true;
837                                 option_values.analyze = true;
838                                 break;
839                         case 't':
840                                 option_values.mode_decode = true;
841                                 option_values.test_only = true;
842                                 break;
843                         case 'c':
844                                 option_values.force_to_stdout = true;
845                                 break;
846                         case 's':
847                                 option_values.verbose = false;
848                                 break;
849                         case 'f':
850                                 option_values.force_file_overwrite = true;
851                                 break;
852                         case 'o':
853                                 FLAC__ASSERT(0 != option_argument);
854                                 option_values.cmdline_forced_outfilename = option_argument;
855                                 break;
856                         case 'F':
857                                 option_values.continue_through_decode_errors = true;
858                                 break;
859                         case 'T':
860                                 FLAC__ASSERT(0 != option_argument);
861                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
862                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
863                                 break;
864                         case '0':
865                                 option_values.do_exhaustive_model_search = false;
866                                 option_values.do_escape_coding = false;
867                                 option_values.do_mid_side = false;
868                                 option_values.loose_mid_side = false;
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 '1':
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 = true;
879                                 option_values.qlp_coeff_precision = 0;
880                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
881                                 option_values.rice_parameter_search_dist = 0;
882                                 option_values.max_lpc_order = 0;
883                                 break;
884                         case '2':
885                                 option_values.do_exhaustive_model_search = false;
886                                 option_values.do_escape_coding = false;
887                                 option_values.do_mid_side = true;
888                                 option_values.loose_mid_side = false;
889                                 option_values.qlp_coeff_precision = 0;
890                                 option_values.min_residual_partition_order = 0;
891                                 option_values.max_residual_partition_order = 3;
892                                 option_values.rice_parameter_search_dist = 0;
893                                 option_values.max_lpc_order = 0;
894                                 break;
895                         case '3':
896                                 option_values.do_exhaustive_model_search = false;
897                                 option_values.do_escape_coding = false;
898                                 option_values.do_mid_side = false;
899                                 option_values.loose_mid_side = false;
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 = 6;
904                                 break;
905                         case '4':
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 = true;
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 '5':
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 = option_values.max_residual_partition_order = 3;
922                                 option_values.rice_parameter_search_dist = 0;
923                                 option_values.max_lpc_order = 8;
924                                 break;
925                         case '6':
926                                 option_values.do_exhaustive_model_search = false;
927                                 option_values.do_escape_coding = false;
928                                 option_values.do_mid_side = true;
929                                 option_values.loose_mid_side = false;
930                                 option_values.qlp_coeff_precision = 0;
931                                 option_values.min_residual_partition_order = 0;
932                                 option_values.max_residual_partition_order = 4;
933                                 option_values.rice_parameter_search_dist = 0;
934                                 option_values.max_lpc_order = 8;
935                                 break;
936                         case '7':
937                                 option_values.do_exhaustive_model_search = true;
938                                 option_values.do_escape_coding = false;
939                                 option_values.do_mid_side = true;
940                                 option_values.loose_mid_side = false;
941                                 option_values.qlp_coeff_precision = 0;
942                                 option_values.min_residual_partition_order = 0;
943                                 option_values.max_residual_partition_order = 6;
944                                 option_values.rice_parameter_search_dist = 0;
945                                 option_values.max_lpc_order = 8;
946                                 break;
947                         case '8':
948                                 option_values.do_exhaustive_model_search = true;
949                                 option_values.do_escape_coding = false;
950                                 option_values.do_mid_side = true;
951                                 option_values.loose_mid_side = false;
952                                 option_values.qlp_coeff_precision = 0;
953                                 option_values.min_residual_partition_order = 0;
954                                 option_values.max_residual_partition_order = 6;
955                                 option_values.rice_parameter_search_dist = 0;
956                                 option_values.max_lpc_order = 12;
957                                 break;
958                         case '9':
959                                 return usage_error("ERROR: compression level '9' is reserved\n");
960                         case 'V':
961                                 option_values.verify = true;
962                                 break;
963                         case 'S':
964                                 FLAC__ASSERT(0 != option_argument);
965                                 if(option_values.num_requested_seek_points < 0)
966                                         option_values.num_requested_seek_points = 0;
967                                 option_values.num_requested_seek_points++;
968                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
969                                         return usage_error("ERROR: too many seekpoints requested\n");
970                                 }
971                                 else {
972                                         strcat(option_values.requested_seek_points, option_argument);
973                                         strcat(option_values.requested_seek_points, ";");
974                                 }
975                                 break;
976                         case 'P':
977                                 FLAC__ASSERT(0 != option_argument);
978                                 option_values.padding = atoi(option_argument);
979                                 if(option_values.padding < 0)
980                                         return usage_error("ERROR: argument to -P must be >= 0\n");
981                                 break;
982                         case 'b':
983                                 FLAC__ASSERT(0 != option_argument);
984                                 option_values.blocksize = atoi(option_argument);
985                                 break;
986                         case 'e':
987                                 option_values.do_exhaustive_model_search = true;
988                                 break;
989                         case 'E':
990                                 option_values.do_escape_coding = true;
991                                 break;
992                         case 'l':
993                                 FLAC__ASSERT(0 != option_argument);
994                                 option_values.max_lpc_order = atoi(option_argument);
995                                 break;
996                         case 'm':
997                                 option_values.do_mid_side = true;
998                                 option_values.loose_mid_side = false;
999                                 break;
1000                         case 'M':
1001                                 option_values.loose_mid_side = option_values.do_mid_side = true;
1002                                 break;
1003                         case 'p':
1004                                 option_values.do_qlp_coeff_prec_search = true;
1005                                 break;
1006                         case 'q':
1007                                 FLAC__ASSERT(0 != option_argument);
1008                                 option_values.qlp_coeff_precision = atoi(option_argument);
1009                                 break;
1010                         case 'r':
1011                                 FLAC__ASSERT(0 != option_argument);
1012                                 p = strchr(option_argument, ',');
1013                                 if(0 == p) {
1014                                         option_values.min_residual_partition_order = 0;
1015                                         option_values.max_residual_partition_order = atoi(option_argument);
1016                                 }
1017                                 else {
1018                                         option_values.min_residual_partition_order = atoi(option_argument);
1019                                         option_values.max_residual_partition_order = atoi(++p);
1020                                 }
1021                                 break;
1022                         case 'R':
1023                                 FLAC__ASSERT(0 != option_argument);
1024                                 option_values.rice_parameter_search_dist = atoi(option_argument);
1025                                 break;
1026                         default:
1027                                 FLAC__ASSERT(0);
1028                 }
1029         }
1030
1031         return 0;
1032 }
1033
1034 void free_options()
1035 {
1036         unsigned i;
1037         if(0 != option_values.filenames) {
1038                 for(i = 0; i < option_values.num_files; i++) {
1039                         if(0 != option_values.filenames[i])
1040                                 free(option_values.filenames[i]);
1041                 }
1042                 free(option_values.filenames);
1043         }
1044         if(0 != option_values.vorbis_comment)
1045                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1046 }
1047
1048 int usage_error(const char *message, ...)
1049 {
1050         va_list args;
1051
1052         FLAC__ASSERT(0 != message);
1053
1054         va_start(args, message);
1055
1056         (void) vfprintf(stderr, message, args);
1057
1058         va_end(args);
1059
1060         printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1061
1062         return 1;
1063 }
1064
1065 void show_version()
1066 {
1067         printf("flac %s\n", FLAC__VERSION_STRING);
1068 }
1069
1070 static void usage_header()
1071 {
1072         printf("===============================================================================\n");
1073         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1074         printf("Copyright (C) 2000,2001,2002,2003,2004  Josh Coalson\n");
1075         printf("\n");
1076         printf("This program is free software; you can redistribute it and/or\n");
1077         printf("modify it under the terms of the GNU General Public License\n");
1078         printf("as published by the Free Software Foundation; either version 2\n");
1079         printf("of the License, or (at your option) any later version.\n");
1080         printf("\n");
1081         printf("This program is distributed in the hope that it will be useful,\n");
1082         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1083         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1084         printf("GNU General Public License for more details.\n");
1085         printf("\n");
1086         printf("You should have received a copy of the GNU General Public License\n");
1087         printf("along with this program; if not, write to the Free Software\n");
1088         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1089         printf("===============================================================================\n");
1090 }
1091
1092 static void usage_summary()
1093 {
1094         printf("Usage:\n");
1095         printf("\n");
1096         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1097         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1098         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1099         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1100         printf("\n");
1101 }
1102
1103 void short_usage()
1104 {
1105         usage_header();
1106         printf("\n");
1107         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1108         printf("instructions use 'flac --explain'\n");
1109         printf("\n");
1110         printf("To encode:\n");
1111         printf("  flac [-#] [INPUTFILE [...]]\n");
1112         printf("\n");
1113         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1114         printf("\n");
1115         printf("To decode:\n");
1116         printf("  flac -d [INPUTFILE [...]]\n");
1117         printf("\n");
1118         printf("To test:\n");
1119         printf("  flac -t [INPUTFILE [...]]\n");
1120 }
1121
1122 void show_help()
1123 {
1124         usage_header();
1125         usage_summary();
1126         printf("general options:\n");
1127         printf("  -v, --version                Show the flac version number\n");
1128         printf("  -h, --help                   Show this screen\n");
1129         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1130         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1131         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1132         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1133         printf("  -c, --stdout                 Write output to stdout\n");
1134         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1135         printf("  -f, --force                  Force overwriting of output files\n");
1136         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1137         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1138         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1139         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1140         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1141 #ifdef FLAC__HAS_OGG
1142         printf("      --ogg                    Use Ogg as transport layer\n");
1143         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1144 #endif
1145         printf("analysis options:\n");
1146         printf("      --residual-text          Include residual signal in text output\n");
1147         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1148         printf("decoding options:\n");
1149         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1150         printf("encoding options:\n");
1151         printf("  -V, --verify                 Verify a correct encoding\n");
1152         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1153         printf("      --sector-align           Align multiple files on sector boundaries\n");
1154         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1155         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1156         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1157         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1158         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1159         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1160         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1161         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1162         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1163         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1164         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1165         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1166         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1167         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1168         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1169         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1170         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1171         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1172         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1173         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1174         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1175         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1176         printf("format options:\n");
1177         printf("      --endian={big|little}    Set byte order for samples\n");
1178         printf("      --channels=#             Number of channels\n");
1179         printf("      --bps=#                  Number of bits per sample\n");
1180         printf("      --sample-rate=#          Sample rate in Hz\n");
1181         printf("      --sign={signed|unsigned} Sign of samples\n");
1182         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1183         printf("      --force-raw-format       Treat input or output as raw samples\n");
1184         printf("negative options:\n");
1185         printf("      --no-adaptive-mid-side\n");
1186         printf("      --no-decode-through-errors\n");
1187         printf("      --no-delete-input-file\n");
1188         printf("      --no-exhaustive-model-search\n");
1189         printf("      --no-lax\n");
1190         printf("      --no-mid-side\n");
1191 #ifdef FLAC__HAS_OGG
1192         printf("      --no-ogg\n");
1193 #endif
1194         printf("      --no-padding\n");
1195         printf("      --no-qlp-coeff-prec-search\n");
1196         printf("      --no-replay-gain\n");
1197         printf("      --no-residual-gnuplot\n");
1198         printf("      --no-residual-text\n");
1199         printf("      --no-sector-align\n");
1200         printf("      --no-seektable\n");
1201         printf("      --no-silent\n");
1202         printf("      --no-force\n");
1203         printf("      --no-verify\n");
1204 }
1205
1206 void show_explain()
1207 {
1208         usage_header();
1209         usage_summary();
1210         printf("For encoding:\n");
1211         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1212         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1213         printf("For decoding, the reverse is true.\n");
1214         printf("\n");
1215         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1216         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1217         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1218         printf("instead of:\n");
1219         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1220         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1221         printf("WAVE/AIFF header contents when necessary.\n");
1222         printf("\n");
1223         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1224         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1225         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1226         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1227         printf("files using -fr.\n");
1228         printf("\n");
1229         printf("general options:\n");
1230         printf("  -v, --version                Show the flac version number\n");
1231         printf("  -h, --help                   Show basic usage a list of all options\n");
1232         printf("  -H, --explain                Show this screen\n");
1233         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1234         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1235         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1236         printf("  -c, --stdout                 Write output to stdout\n");
1237         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1238         printf("  -f, --force                  Force overwriting of output files\n");
1239         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1240         printf("                               changes the extension.  May only be used when\n");
1241         printf("                               encoding a single file.  May not be used in\n");
1242         printf("                               conjunction with --output-prefix.\n");
1243         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1244         printf("                               STRING.  This can be useful for encoding or\n");
1245         printf("                               decoding files to a different directory.  Make\n");
1246         printf("                               sure if your STRING is a path name that it ends\n");
1247         printf("                               with a '/' slash.\n");
1248         printf("      --delete-input-file      Automatically delete the input file after a\n");
1249         printf("                               successful encode or decode.  If there was an\n");
1250         printf("                               error (including a verify error) the input file\n");
1251         printf("                               is left intact.\n");
1252         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1253         printf("                               be used both for encoding and decoding.  The\n");
1254         printf("                               alternative form mm:ss.ss can be used to specify\n");
1255         printf("                               minutes, seconds, and fractions of a second.\n");
1256         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1257         printf("                               file.  The given sample number is not included\n");
1258         printf("                               in the decoded output.  The alternative form\n");
1259         printf("                               mm:ss.ss can be used to specify minutes,\n");
1260         printf("                               seconds, and fractions of a second.  If a `+'\n");
1261         printf("                               sign is at the beginning, the --until point is\n");
1262         printf("                               relative to the --skip point.  If a `-' sign is\n");
1263         printf("                               at the beginning, the --until point is relative\n");
1264         printf("                               to end of the audio.\n");
1265 #ifdef FLAC__HAS_OGG
1266         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1267         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1268         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1269         printf("                               resulting file should have an '.ogg' extension\n");
1270         printf("                               and will still be decodable by flac.  When\n");
1271         printf("                               decoding, force the input to be treated as\n");
1272         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1273         printf("                               from stdin or when the filename does not end in\n");
1274         printf("                               '.ogg'.\n");
1275         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1276         printf("                               encoding and no serial number is given, flac\n");
1277         printf("                               uses '0'.  When decoding and no number is\n");
1278         printf("                               given, flac uses the serial number of the first\n");
1279         printf("                               page.\n");
1280 #endif
1281         printf("analysis options:\n");
1282         printf("      --residual-text          Include residual signal in text output.  This\n");
1283         printf("                               will make the file very big, much larger than\n");
1284         printf("                               even the decoded file.\n");
1285         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1286         printf("                               of each subframe\n");
1287         printf("decoding options:\n");
1288         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1289         printf("                               and removes the partially decoded file if it\n");
1290         printf("                               encounters a bitstream error.  With -F, errors\n");
1291         printf("                               are still printed but flac will continue\n");
1292         printf("                               decoding to completion.  Note that errors may\n");
1293         printf("                               cause the decoded audio to be missing some\n");
1294         printf("                               samples or have silent sections.\n");
1295         printf("encoding options:\n");
1296         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1297         printf("                               output in parallel and comparing to the\n");
1298         printf("                               original\n");
1299         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1300         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1301         printf("                               on sector boundaries.\n");
1302         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1303         printf("                               comments.  Title gains/peaks will be computed\n");
1304         printf("                               for each file, and an album gain/peak will be\n");
1305         printf("                               computed for all files.  All input files must\n");
1306         printf("                               have the same resolution, sample rate, and\n");
1307         printf("                               number of channels.  The sample rate must be\n");
1308         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1309         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1310         printf("                               few extra bytes in the PADDING block.\n");
1311         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1312         printf("                               a CUESHEET metadata block.  This option may only\n");
1313         printf("                               be used when encoding a single file.  A\n");
1314         printf("                               seekpoint will be added for each index point in\n");
1315         printf("                               the cuesheet to the SEEKTABLE unless\n");
1316         printf("                               --no-cued-seekpoints is specified.\n");
1317         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1318         printf("                               comment if necessary.  This option may appear\n");
1319         printf("                               more than once to add several comments.  NOTE:\n");
1320         printf("                               all tags will be added to all encoded files.\n");
1321         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1322         printf("       #  : a specific sample number for a seek point\n");
1323         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1324         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1325         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1326         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1327         printf("           ified union of all such values.\n");
1328         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1329         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1330         printf("           input size before starting.\n");
1331         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1332         printf("           either no seek point entered (if the input size is determinable\n");
1333         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1334         printf("           determinable)\n");
1335         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1336         printf("                               block of the given length (in bytes) after the\n");
1337         printf("                               STREAMINFO block.  This is useful if you plan\n");
1338         printf("                               to tag the file later with an APPLICATION\n");
1339         printf("                               block; instead of having to rewrite the entire\n");
1340         printf("                               file later just to insert your block, you can\n");
1341         printf("                               write directly over the PADDING block.  Note\n");
1342         printf("                               that the total length of the PADDING block will\n");
1343         printf("                               be 4 bytes longer than the length given because\n");
1344         printf("                               of the 4 metadata block header bytes.  You can\n");
1345         printf("                               force no PADDING block at all to be written with\n");
1346         printf("                               --no-padding.  The encoder writes a PADDING\n");
1347         printf("                               block of 4096 bytes by default.\n");
1348         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1349         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1350         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1351         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1352         printf("                               used)\n");
1353         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1354         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1355         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1356         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1357         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1358         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1359         printf("                                     -5 is the default setting\n");
1360         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1361         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1362         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1363         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1364         printf("                                     (stereo only)\n");
1365         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1366         printf("                                     (stereo only)\n");
1367         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1368         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1369         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1370         printf("                                     quantization (expensive!); overrides -q;\n");
1371         printf("                                     does nothing if using -l 0\n");
1372         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1373         printf("                                     linear-predictor coefficients; 0 => let\n");
1374         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1375         printf("                                     default is -q 0)\n");
1376         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1377         printf("                                     (# is 0..16; min defaults to 0; the\n");
1378         printf("                                     default is -r 0; above 4 doesn't usually\n");
1379         printf("                                     help much)\n");
1380         printf("format options:\n");
1381         printf("      --endian={big|little}    Set byte order for samples\n");
1382         printf("      --channels=#             Number of channels\n");
1383         printf("      --bps=#                  Number of bits per sample\n");
1384         printf("      --sample-rate=#          Sample rate in Hz\n");
1385         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1386         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1387         printf("                               option is not needed if the output filename (as\n");
1388         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1389         printf("                               has no effect when encoding since input AIFF is\n");
1390         printf("                               auto-detected.\n");
1391         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1392         printf("                               decoding) to be treated as raw samples\n");
1393         printf("negative options:\n");
1394         printf("      --no-adaptive-mid-side\n");
1395         printf("      --no-decode-through-errors\n");
1396         printf("      --no-delete-input-file\n");
1397         printf("      --no-exhaustive-model-search\n");
1398         printf("      --no-lax\n");
1399         printf("      --no-mid-side\n");
1400 #ifdef FLAC__HAS_OGG
1401         printf("      --no-ogg\n");
1402 #endif
1403         printf("      --no-padding\n");
1404         printf("      --no-qlp-coeff-prec-search\n");
1405         printf("      --no-residual-gnuplot\n");
1406         printf("      --no-residual-text\n");
1407         printf("      --no-sector-align\n");
1408         printf("      --no-seektable\n");
1409         printf("      --no-silent\n");
1410         printf("      --no-force\n");
1411         printf("      --no-verify\n");
1412 }
1413
1414 void
1415 format_mistake(const char *infilename, const char *wrong, const char *right)
1416 {
1417         fprintf(stderr, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1418 }
1419
1420 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1421 {
1422         FILE *encode_infile;
1423         FLAC__byte lookahead[12];
1424         unsigned lookahead_length = 0;
1425         FileFormat fmt= RAW;
1426         int retval;
1427         long infilesize;
1428         encode_options_t common_options;
1429         const char *outfilename = get_encoded_outfilename(infilename);
1430
1431         if(0 == outfilename) {
1432                 fprintf(stderr, "ERROR: filename too long: %s", infilename);
1433                 return 1;
1434         }
1435
1436         /*
1437          * Error if output file already exists (and -f not used).
1438          * Use grabbag__file_get_filesize() as a cheap way to check.
1439          */
1440         if(!option_values.test_only && !option_values.force_file_overwrite && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1441                 fprintf(stderr, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1442                 return 1;
1443         }
1444
1445         if(0 == strcmp(infilename, "-")) {
1446                 infilesize = -1;
1447                 encode_infile = grabbag__file_get_binary_stdin();
1448         }
1449         else {
1450                 infilesize = grabbag__file_get_filesize(infilename);
1451                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1452                         fprintf(stderr, "ERROR: can't open input file %s\n", infilename);
1453                         return 1;
1454                 }
1455         }
1456
1457         if(!option_values.force_raw_format) {
1458                 /* first set format based on name */
1459                 if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1460                         fmt= WAV;
1461                 else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1462                         fmt= AIF;
1463                 else if(strlen(infilename) >= 5 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1464                         fmt= AIF;
1465
1466                 /* attempt to guess the file type based on the first 12 bytes */
1467                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1468                         if(fmt != RAW)
1469                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1470                         fmt= RAW;
1471                 }
1472                 else {
1473                         if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1474                                 fmt= WAV;
1475                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1476                                 fmt= AIF;
1477                         else {
1478                                 if(fmt != RAW)
1479                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1480                                 fmt= RAW;
1481                         }
1482                 }
1483         }
1484
1485         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1486                 fprintf(stderr, "ERROR: can't --sector-align when the input size is unknown\n");
1487                 return 1;
1488         }
1489
1490         if(fmt == RAW) {
1491                 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)
1492                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1493         }
1494
1495         if(encode_infile == stdin || option_values.force_to_stdout) {
1496                 if(option_values.replay_gain)
1497                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1498         }
1499
1500         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1501                 return usage_error("ERROR: invalid value for --skip\n");
1502
1503         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 */
1504                 return usage_error("ERROR: invalid value for --until\n");
1505         /* if there is no "--until" we want to default to "--until=-0" */
1506         if(0 == option_values.until_specification)
1507                 common_options.until_specification.is_relative = true;
1508
1509         common_options.verbose = option_values.verbose;
1510         common_options.verify = option_values.verify;
1511 #ifdef FLAC__HAS_OGG
1512         common_options.use_ogg = option_values.use_ogg;
1513         common_options.has_serial_number = option_values.has_serial_number;
1514         common_options.serial_number = option_values.serial_number;
1515 #endif
1516         common_options.lax = option_values.lax;
1517         common_options.do_mid_side = option_values.do_mid_side;
1518         common_options.loose_mid_side = option_values.loose_mid_side;
1519         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1520         common_options.do_escape_coding = option_values.do_escape_coding;
1521         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1522         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1523         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1524         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1525         common_options.max_lpc_order = option_values.max_lpc_order;
1526         common_options.blocksize = (unsigned)option_values.blocksize;
1527         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1528         common_options.padding = option_values.padding;
1529         common_options.requested_seek_points = option_values.requested_seek_points;
1530         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1531         common_options.cuesheet_filename = option_values.cuesheet_filename;
1532         common_options.cued_seekpoints = option_values.cued_seekpoints;
1533         common_options.is_first_file = is_first_file;
1534         common_options.is_last_file = is_last_file;
1535         common_options.align_reservoir = align_reservoir;
1536         common_options.align_reservoir_samples = &align_reservoir_samples;
1537         common_options.replay_gain = option_values.replay_gain;
1538         common_options.sector_align = option_values.sector_align;
1539         common_options.vorbis_comment = option_values.vorbis_comment;
1540         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1541         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1542         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1543
1544         if(fmt == RAW) {
1545                 raw_encode_options_t options;
1546
1547                 options.common = common_options;
1548                 options.is_big_endian = option_values.format_is_big_endian;
1549                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1550                 options.channels = option_values.format_channels;
1551                 options.bps = option_values.format_bps;
1552                 options.sample_rate = option_values.format_sample_rate;
1553
1554                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1555         }
1556         else {
1557                 wav_encode_options_t options;
1558
1559                 options.common = common_options;
1560
1561                 if(fmt == AIF)
1562                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1563                 else
1564                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1565         }
1566
1567         if(retval == 0 && strcmp(infilename, "-")) {
1568                 if(strcmp(outfilename, "-")) {
1569                         if(option_values.replay_gain) {
1570                                 float title_gain, title_peak;
1571                                 const char *error;
1572                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1573                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1574                                         fprintf(stderr, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1575                                 }
1576                         }
1577                         grabbag__file_copy_metadata(infilename, outfilename);
1578                 }
1579                 if(option_values.delete_input)
1580                         unlink(infilename);
1581         }
1582
1583         return retval;
1584 }
1585
1586 int decode_file(const char *infilename)
1587 {
1588         int retval;
1589         FLAC__bool treat_as_ogg = false;
1590         decode_options_t common_options;
1591         const char *outfilename = get_decoded_outfilename(infilename);
1592
1593         if(0 == outfilename) {
1594                 fprintf(stderr, "ERROR: filename too long: %s", infilename);
1595                 return 1;
1596         }
1597
1598         /*
1599          * Error if output file already exists (and -f not used).
1600          * Use grabbag__file_get_filesize() as a cheap way to check.
1601          */
1602         if(!option_values.test_only && !option_values.force_file_overwrite && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1603                 fprintf(stderr, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1604                 return 1;
1605         }
1606
1607         if(!option_values.test_only && !option_values.analyze) {
1608                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1609                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1610         }
1611
1612         if(option_values.use_ogg)
1613                 treat_as_ogg = true;
1614         else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1615                 treat_as_ogg = true;
1616         else
1617                 treat_as_ogg = false;
1618
1619 #ifndef FLAC__HAS_OGG
1620         if(treat_as_ogg) {
1621                 fprintf(stderr, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1622                 return 1;
1623         }
1624 #endif
1625
1626         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1627                 return usage_error("ERROR: invalid value for --skip\n");
1628
1629         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 */
1630                 return usage_error("ERROR: invalid value for --until\n");
1631         /* if there is no "--until" we want to default to "--until=-0" */
1632         if(0 == option_values.until_specification)
1633                 common_options.until_specification.is_relative = true;
1634
1635         common_options.verbose = option_values.verbose;
1636         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1637         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1638 #ifdef FLAC__HAS_OGG
1639         common_options.is_ogg = treat_as_ogg;
1640         common_options.use_first_serial_number = !option_values.has_serial_number;
1641         common_options.serial_number = option_values.serial_number;
1642 #endif
1643
1644         if(!option_values.force_raw_format) {
1645                 wav_decode_options_t options;
1646
1647                 options.common = common_options;
1648
1649                 if(
1650                         option_values.force_aiff_format ||
1651                         (strlen(outfilename) >= 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1652                         (strlen(outfilename) >= 5 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1653                 )
1654                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1655                 else
1656                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1657         }
1658         else {
1659                 raw_decode_options_t options;
1660
1661                 options.common = common_options;
1662                 options.is_big_endian = option_values.format_is_big_endian;
1663                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1664
1665                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1666         }
1667
1668         if(retval == 0 && strcmp(infilename, "-")) {
1669                 if(strcmp(outfilename, "-"))
1670                         grabbag__file_copy_metadata(infilename, outfilename);
1671                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1672                         unlink(infilename);
1673         }
1674
1675         return retval;
1676 }
1677
1678 const char *get_encoded_outfilename(const char *infilename)
1679 {
1680         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1681         return get_outfilename(infilename, suffix);
1682 }
1683
1684 const char *get_decoded_outfilename(const char *infilename)
1685 {
1686         const char *suffix;
1687         if(option_values.analyze) {
1688                 suffix = ".ana";
1689         }
1690         else if(option_values.force_raw_format) {
1691                 suffix = ".raw";
1692         }
1693         else if(option_values.force_aiff_format) {
1694                 suffix = ".aiff";
1695         }
1696         else {
1697                 suffix = ".wav";
1698         }
1699         return get_outfilename(infilename, suffix);
1700 }
1701
1702 const char *get_outfilename(const char *infilename, const char *suffix)
1703 {
1704         if(0 == option_values.cmdline_forced_outfilename) {
1705                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1706
1707                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1708                         strcpy(buffer, "-");
1709                 }
1710                 else {
1711                         char *p;
1712                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
1713                                 return 0;
1714                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
1715                                 return 0;
1716                         if(0 == (p = strrchr(buffer, '.'))) {
1717                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1718                                         return 0;
1719                         }
1720                         else {
1721                                 if(0 == strcmp(p, suffix)) {
1722                                         *p = '\0';
1723                                         if (flac__strlcat(buffer, "_new", sizeof buffer) >= sizeof buffer)
1724                                                 return 0;
1725                                 }
1726                                 else {
1727                                         *p = '\0';
1728                                 }
1729                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1730                                         return 0;
1731                         }
1732                 }
1733                 return buffer;
1734         }
1735         else
1736                 return option_values.cmdline_forced_outfilename;
1737 }
1738
1739 void die(const char *message)
1740 {
1741         FLAC__ASSERT(0 != message);
1742         fprintf(stderr, "ERROR: %s\n", message);
1743         exit(1);
1744 }
1745
1746 char *local_strdup(const char *source)
1747 {
1748         char *ret;
1749         FLAC__ASSERT(0 != source);
1750         if(0 == (ret = strdup(source)))
1751                 die("out of memory during strdup()");
1752         return ret;
1753 }