replace verbose/silent flags with a verbosity level
[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 #include <time.h>
26
27 #ifdef HAVE_CONFIG_H
28 #include <config.h>
29 #endif
30
31 #if !defined _MSC_VER && !defined __MINGW32__
32 /* unlink is in stdio.h in VC++ */
33 #include <unistd.h> /* for unlink() */
34 #else
35 #define strcasecmp stricmp
36 #endif
37 #include "FLAC/all.h"
38 #include "share/grabbag.h"
39 #include "analyze.h"
40 #include "decode.h"
41 #include "encode.h"
42 #include "local_string_utils.h" /* for flac__strlcat() and flac__strlcpy() */
43 #include "utils.h"
44 #include "vorbiscomment.h"
45
46 #if 0
47 /*[JEC] was:#if HAVE_GETOPT_LONG*/
48 /*[JEC] see flac/include/share/getopt.h as to why the change */
49 #  include <getopt.h>
50 #else
51 #  include "share/getopt.h"
52 #endif
53
54 typedef enum { RAW, WAV, AIF } FileFormat;
55
56 static int do_it();
57
58 static FLAC__bool init_options();
59 static int parse_options(int argc, char *argv[]);
60 static int parse_option(int short_option, const char *long_option, const char *option_argument);
61 static void free_options();
62
63 static int usage_error(const char *message, ...);
64 static void short_usage();
65 static void show_version();
66 static void show_help();
67 static void show_explain();
68 static void format_mistake(const char *infilename, const char *wrong, const char *right);
69
70 static int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file);
71 static int decode_file(const char *infilename);
72
73 static const char *get_encoded_outfilename(const char *infilename);
74 static const char *get_decoded_outfilename(const char *infilename);
75 static const char *get_outfilename(const char *infilename, const char *suffix);
76
77 static void die(const char *message);
78 static char *local_strdup(const char *source);
79
80
81 /*
82  * share__getopt format struct; note that for long options with no
83  * short option equivalent we just set the 'val' field to 0.
84  */
85 static struct share__option long_options_[] = {
86         /*
87          * general options
88          */
89         { "help"             , share__no_argument, 0, 'h' },
90         { "explain"          , share__no_argument, 0, 'H' },
91         { "version"          , share__no_argument, 0, 'v' },
92         { "decode"           , share__no_argument, 0, 'd' },
93         { "analyze"          , share__no_argument, 0, 'a' },
94         { "test"             , share__no_argument, 0, 't' },
95         { "stdout"           , share__no_argument, 0, 'c' },
96         { "silent"           , share__no_argument, 0, 's' },
97         { "totally-silent"   , share__no_argument, 0, 0 },
98         { "force"            , share__no_argument, 0, 'f' },
99         { "delete-input-file", share__no_argument, 0, 0 },
100         { "output-prefix"    , share__required_argument, 0, 0 },
101         { "output-name"      , share__required_argument, 0, 'o' },
102         { "skip"             , share__required_argument, 0, 0 },
103         { "until"            , share__required_argument, 0, 0 },
104
105         /*
106          * decoding options
107          */
108         { "decode-through-errors", share__no_argument, 0, 'F' },
109         { "cue"                  , share__required_argument, 0, 0 },
110         { "apply-replaygain-which-is-not-lossless", share__optional_argument, 0, 0 }, /* undocumented */
111
112         /*
113          * encoding options
114          */
115         { "cuesheet"                  , share__required_argument, 0, 0 },
116         { "no-cued-seekpoints"        , share__no_argument, 0, 0 },
117         { "tag"                       , share__required_argument, 0, 'T' },
118         { "compression-level-0"       , share__no_argument, 0, '0' },
119         { "compression-level-1"       , share__no_argument, 0, '1' },
120         { "compression-level-2"       , share__no_argument, 0, '2' },
121         { "compression-level-3"       , share__no_argument, 0, '3' },
122         { "compression-level-4"       , share__no_argument, 0, '4' },
123         { "compression-level-5"       , share__no_argument, 0, '5' },
124         { "compression-level-6"       , share__no_argument, 0, '6' },
125         { "compression-level-7"       , share__no_argument, 0, '7' },
126         { "compression-level-8"       , share__no_argument, 0, '8' },
127         { "compression-level-9"       , share__no_argument, 0, '9' },
128         { "best"                      , share__no_argument, 0, '8' },
129         { "fast"                      , share__no_argument, 0, '0' },
130         { "super-secret-totally-impractical-compression-level", share__no_argument, 0, 0 },
131         { "verify"                    , share__no_argument, 0, 'V' },
132         { "force-aiff-format"         , share__no_argument, 0, 0 },
133         { "force-raw-format"          , share__no_argument, 0, 0 },
134         { "lax"                       , share__no_argument, 0, 0 },
135         { "replay-gain"               , share__no_argument, 0, 0 },
136         { "sector-align"              , share__no_argument, 0, 0 },
137         { "seekpoint"                 , share__required_argument, 0, 'S' },
138         { "padding"                   , share__required_argument, 0, 'P' },
139 #ifdef FLAC__HAS_OGG
140         { "ogg"                       , share__no_argument, 0, 0 },
141         { "serial-number"             , share__required_argument, 0, 0 },
142 #endif
143         { "blocksize"                 , share__required_argument, 0, 'b' },
144         { "exhaustive-model-search"   , share__no_argument, 0, 'e' },
145         { "max-lpc-order"             , share__required_argument, 0, 'l' },
146         { "mid-side"                  , share__no_argument, 0, 'm' },
147         { "adaptive-mid-side"         , share__no_argument, 0, 'M' },
148         { "qlp-coeff-precision-search", share__no_argument, 0, 'p' },
149         { "qlp-coeff-precision"       , share__required_argument, 0, 'q' },
150         { "rice-partition-order"      , share__required_argument, 0, 'r' },
151         { "endian"                    , share__required_argument, 0, 0 },
152         { "channels"                  , share__required_argument, 0, 0 },
153         { "bps"                       , share__required_argument, 0, 0 },
154         { "sample-rate"               , share__required_argument, 0, 0 },
155         { "sign"                      , share__required_argument, 0, 0 },
156
157         /*
158          * analysis options
159          */
160         { "residual-gnu-plot", share__no_argument, 0, 0 },
161         { "residual-text", share__no_argument, 0, 0 },
162
163         /*
164          * negatives
165          */
166         { "no-decode-through-errors"  , share__no_argument, 0, 0 },
167         { "no-silent"                 , share__no_argument, 0, 0 },
168         { "no-force"                  , share__no_argument, 0, 0 },
169         { "no-seektable"              , share__no_argument, 0, 0 },
170         { "no-delete-input-file"      , share__no_argument, 0, 0 },
171         { "no-replay-gain"            , share__no_argument, 0, 0 },
172         { "no-sector-align"           , share__no_argument, 0, 0 },
173         { "no-lax"                    , share__no_argument, 0, 0 },
174 #ifdef FLAC__HAS_OGG
175         { "no-ogg"                    , share__no_argument, 0, 0 },
176 #endif
177         { "no-exhaustive-model-search", share__no_argument, 0, 0 },
178         { "no-mid-side"               , share__no_argument, 0, 0 },
179         { "no-adaptive-mid-side"      , share__no_argument, 0, 0 },
180         { "no-qlp-coeff-prec-search"  , share__no_argument, 0, 0 },
181         { "no-padding"                , share__no_argument, 0, 0 },
182         { "no-verify"                 , share__no_argument, 0, 0 },
183         { "no-residual-gnuplot"       , share__no_argument, 0, 0 },
184         { "no-residual-text"          , share__no_argument, 0, 0 },
185         /*
186          * undocumented debugging options for the test suite
187          */
188         { "disable-constant-subframes", share__no_argument, 0, 0 },
189         { "disable-fixed-subframes"   , share__no_argument, 0, 0 },
190         { "disable-verbatim-subframes", share__no_argument, 0, 0 },
191
192         {0, 0, 0, 0}
193 };
194
195
196 /*
197  * global to hold command-line option values
198  */
199
200 static struct {
201         FLAC__bool show_help;
202         FLAC__bool show_explain;
203         FLAC__bool show_version;
204         FLAC__bool mode_decode;
205         FLAC__bool verify;
206         FLAC__bool force_file_overwrite;
207         FLAC__bool continue_through_decode_errors;
208         replaygain_synthesis_spec_t replaygain_synthesis_spec;
209         FLAC__bool lax;
210         FLAC__bool test_only;
211         FLAC__bool analyze;
212         FLAC__bool use_ogg;
213         FLAC__bool has_serial_number; /* true iff --serial-number was used */
214         long serial_number; /* this is the Ogg serial number and is unused for native FLAC */
215         FLAC__bool do_mid_side;
216         FLAC__bool loose_mid_side;
217         FLAC__bool do_exhaustive_model_search;
218         FLAC__bool do_escape_coding;
219         FLAC__bool do_qlp_coeff_prec_search;
220         FLAC__bool force_to_stdout;
221         FLAC__bool force_aiff_format;
222         FLAC__bool force_raw_format;
223         FLAC__bool delete_input;
224         FLAC__bool replay_gain;
225         FLAC__bool sector_align;
226         const char *cmdline_forced_outfilename;
227         const char *output_prefix;
228         analysis_options aopts;
229         int padding;
230         unsigned max_lpc_order;
231         unsigned qlp_coeff_precision;
232         const char *skip_specification;
233         const char *until_specification;
234         const char *cue_specification;
235         int format_is_big_endian;
236         int format_is_unsigned_samples;
237         int format_channels;
238         int format_bps;
239         int format_sample_rate;
240         int blocksize;
241         int min_residual_partition_order;
242         int max_residual_partition_order;
243         int rice_parameter_search_dist;
244         char requested_seek_points[50000]; /* bad MAGIC NUMBER but buffer overflow is checked */
245         int num_requested_seek_points; /* -1 => no -S options were given, 0 => -S- was given */
246         const char *cuesheet_filename;
247         FLAC__bool cued_seekpoints;
248
249         unsigned num_files;
250         char **filenames;
251
252         FLAC__StreamMetadata *vorbis_comment;
253
254         struct {
255                 FLAC__bool disable_constant_subframes;
256                 FLAC__bool disable_fixed_subframes;
257                 FLAC__bool disable_verbatim_subframes;
258         } debug;
259 } option_values;
260
261
262 /*
263  * miscellaneous globals
264  */
265
266 static FLAC__int32 align_reservoir_0[588], align_reservoir_1[588]; /* for carrying over samples from --sector-align */
267 static FLAC__int32 *align_reservoir[2] = { align_reservoir_0, align_reservoir_1 };
268 static unsigned align_reservoir_samples = 0; /* 0 .. 587 */
269
270
271 int main(int argc, char *argv[])
272 {
273         int retval = 0;
274
275         setlocale(LC_ALL, "");
276         if(!init_options()) {
277                 flac__utils_printf(stderr, 1, "ERROR: allocating memory\n");
278                 retval = 1;
279         }
280         else {
281                 if((retval = parse_options(argc, argv)) == 0)
282                         retval = do_it();
283         }
284
285         free_options();
286
287         return retval;
288 }
289
290 int do_it()
291 {
292         int retval = 0;
293
294         if(option_values.show_version) {
295                 show_version();
296                 return 0;
297         }
298         else if(option_values.show_explain) {
299                 show_explain();
300                 return 0;
301         }
302         else if(option_values.show_help) {
303                 show_help();
304                 return 0;
305         }
306         else {
307                 if(option_values.num_files == 0) {
308                         if(flac__utils_verbosity_ >= 1)
309                                 short_usage();
310                         return 0;
311                 }
312
313                 /*
314                  * tweak options; validate the values
315                  */
316                 if(!option_values.mode_decode) {
317                         if(option_values.blocksize < 0) {
318                                 if(option_values.max_lpc_order == 0)
319                                         option_values.blocksize = 1152;
320                                 else
321                                         option_values.blocksize = 4608;
322                         }
323                         if(option_values.max_residual_partition_order < 0) {
324                                 if(option_values.blocksize <= 1152)
325                                         option_values.max_residual_partition_order = 2;
326                                 else if(option_values.blocksize <= 2304)
327                                         option_values.max_residual_partition_order = 3;
328                                 else if(option_values.blocksize <= 4608)
329                                         option_values.max_residual_partition_order = 3;
330                                 else
331                                         option_values.max_residual_partition_order = 4;
332                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order;
333                         }
334                         if(option_values.rice_parameter_search_dist < 0) {
335                                 option_values.rice_parameter_search_dist = 0;
336                         }
337                         if(0 != option_values.cue_specification)
338                                 return usage_error("ERROR: --cue is not allowed in test mode\n");
339                 }
340                 else {
341                         if(option_values.test_only) {
342                                 if(0 != option_values.skip_specification)
343                                         return usage_error("ERROR: --skip is not allowed in test mode\n");
344                                 if(0 != option_values.until_specification)
345                                         return usage_error("ERROR: --until is not allowed in test mode\n");
346                                 if(0 != option_values.cue_specification)
347                                         return usage_error("ERROR: --cue is not allowed in test mode\n");
348                         }
349                 }
350
351                 if(0 != option_values.cue_specification && (0 != option_values.skip_specification || 0 != option_values.until_specification))
352                         return usage_error("ERROR: --cue may not be combined with --skip or --until\n");
353
354                 FLAC__ASSERT(option_values.blocksize >= 0 || option_values.mode_decode);
355
356                 if(option_values.format_channels >= 0) {
357                         if(option_values.format_channels == 0 || (unsigned)option_values.format_channels > FLAC__MAX_CHANNELS)
358                                 return usage_error("ERROR: invalid number of channels '%u', must be > 0 and <= %u\n", option_values.format_channels, FLAC__MAX_CHANNELS);
359                 }
360                 if(option_values.format_bps >= 0) {
361                         if(option_values.format_bps != 8 && option_values.format_bps != 16 && option_values.format_bps != 24)
362                                 return usage_error("ERROR: invalid bits per sample '%u' (must be 8/16/24)\n", option_values.format_bps);
363                 }
364                 if(option_values.format_sample_rate >= 0) {
365                         if(!FLAC__format_sample_rate_is_valid(option_values.format_sample_rate))
366                                 return usage_error("ERROR: invalid sample rate '%u', must be > 0 and <= %u\n", option_values.format_sample_rate, FLAC__MAX_SAMPLE_RATE);
367                 }
368                 if(option_values.force_raw_format && option_values.force_aiff_format)
369                         return usage_error("ERROR: only one of --force-raw-format and --force-aiff-format allowed\n");
370                 if(option_values.mode_decode) {
371                         if(!option_values.force_raw_format) {
372                                 if(option_values.format_is_big_endian >= 0)
373                                         return usage_error("ERROR: --endian only allowed with --force-raw-format\n");
374                                 if(option_values.format_is_unsigned_samples >= 0)
375                                         return usage_error("ERROR: --sign only allowed with --force-raw-format\n");
376                         }
377                         if(option_values.format_channels >= 0)
378                                 return usage_error("ERROR: --channels not allowed with --decode\n");
379                         if(option_values.format_bps >= 0)
380                                 return usage_error("ERROR: --bps not allowed with --decode\n");
381                         if(option_values.format_sample_rate >= 0)
382                                 return usage_error("ERROR: --sample-rate not allowed with --decode\n");
383                 }
384                 if(!option_values.mode_decode && ((unsigned)option_values.blocksize < FLAC__MIN_BLOCK_SIZE || (unsigned)option_values.blocksize > FLAC__MAX_BLOCK_SIZE)) {
385                         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);
386                 }
387                 if(option_values.qlp_coeff_precision > 0 && option_values.qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION) {
388                         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);
389                 }
390
391                 if(option_values.sector_align) {
392                         if(option_values.mode_decode)
393                                 return usage_error("ERROR: --sector-align only allowed for encoding\n");
394                         if(0 != option_values.skip_specification)
395                                 return usage_error("ERROR: --sector-align not allowed with --skip\n");
396                         if(0 != option_values.until_specification)
397                                 return usage_error("ERROR: --sector-align not allowed with --until\n");
398                         if(0 != option_values.cue_specification)
399                                 return usage_error("ERROR: --sector-align not allowed with --cue\n");
400                         if(option_values.format_channels >= 0 && option_values.format_channels != 2)
401                                 return usage_error("ERROR: --sector-align can only be done with stereo input\n");
402                         if(option_values.format_bps >= 0 && option_values.format_bps != 16)
403                                 return usage_error("ERROR: --sector-align can only be done with 16-bit samples\n");
404                         if(option_values.format_sample_rate >= 0 && option_values.format_sample_rate != 44100)
405                                 return usage_error("ERROR: --sector-align can only be done with a sample rate of 44100\n");
406                 }
407                 if(option_values.replay_gain) {
408                         if(option_values.force_to_stdout)
409                                 return usage_error("ERROR: --replay-gain not allowed with -c/--stdout\n");
410                         if(option_values.mode_decode)
411                                 return usage_error("ERROR: --replay-gain only allowed for encoding\n");
412                         if(option_values.format_channels > 2)
413                                 return usage_error("ERROR: --replay-gain can only be done with mono/stereo input\n");
414                         if(option_values.format_sample_rate >= 0 && !grabbag__replaygain_is_valid_sample_frequency(option_values.format_sample_rate))
415                                 return usage_error("ERROR: invalid sample rate used with --replay-gain\n");
416                         /*
417                          * We want to reserve padding space for the ReplayGain
418                          * tags that we will set later, to avoid rewriting the
419                          * whole file.
420                          */
421                         if(option_values.padding < 0) {
422                                 flac__utils_printf(stderr, 1, "NOTE: --replay-gain may leave a small PADDING block even with --no-padding\n");
423                                 option_values.padding = GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
424                         }
425                         else {
426                                 option_values.padding += GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
427                         }
428                 }
429                 if(option_values.num_files > 1 && option_values.cmdline_forced_outfilename) {
430                         return usage_error("ERROR: -o/--output-name cannot be used with multiple files\n");
431                 }
432                 if(option_values.cmdline_forced_outfilename && option_values.output_prefix) {
433                         return usage_error("ERROR: --output-prefix conflicts with -o/--output-name\n");
434                 }
435                 if(!option_values.mode_decode && 0 != option_values.cuesheet_filename && option_values.num_files > 1) {
436                         return usage_error("ERROR: --cuesheet cannot be used when encoding multiple files\n");
437                 }
438         }
439
440         flac__utils_printf(stderr, 2, "\n");
441         flac__utils_printf(stderr, 2, "flac %s, Copyright (C) 2000,2001,2002,2003,2004 Josh Coalson\n", FLAC__VERSION_STRING);
442         flac__utils_printf(stderr, 2, "flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are\n");
443         flac__utils_printf(stderr, 2, "welcome to redistribute it under certain conditions.  Type `flac' for details.\n\n");
444
445         if(!option_values.mode_decode) {
446                 char padopt[16];
447                 if(option_values.padding < 0)
448                         strcpy(padopt, "-");
449                 else
450                         sprintf(padopt, " %d", option_values.padding);
451                 flac__utils_printf(stderr, 2,
452                         "options:%s%s%s%s -P%s -b %u%s -l %u%s%s%s -q %u -r %u,%u%s\n",
453                         option_values.delete_input?" --delete-input-file":"",
454                         option_values.sector_align?" --sector-align":"",
455                         option_values.use_ogg?" --ogg":"",
456                         option_values.lax?" --lax":"",
457                         padopt,
458                         (unsigned)option_values.blocksize,
459                         option_values.loose_mid_side?" -M":option_values.do_mid_side?" -m":"",
460                         option_values.max_lpc_order,
461                         option_values.do_exhaustive_model_search?" -e":"",
462                         option_values.do_escape_coding?" -E":"",
463                         option_values.do_qlp_coeff_prec_search?" -p":"",
464                         option_values.qlp_coeff_precision,
465                         (unsigned)option_values.min_residual_partition_order,
466                         (unsigned)option_values.max_residual_partition_order,
467                         option_values.verify? " -V":""
468                 );
469         }
470
471         if(option_values.mode_decode) {
472                 FLAC__bool first = true;
473
474                 if(option_values.num_files == 0) {
475                         retval = decode_file("-");
476                 }
477                 else {
478                         unsigned i;
479                         if(option_values.num_files > 1)
480                                 option_values.cmdline_forced_outfilename = 0;
481                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
482                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
483                                         continue;
484                                 retval |= decode_file(option_values.filenames[i]);
485                                 first = false;
486                         }
487                 }
488         }
489         else { /* encode */
490                 FLAC__bool first = true;
491
492                 if(option_values.num_files == 0) {
493                         retval = encode_file("-", first, true);
494                 }
495                 else {
496                         unsigned i;
497                         if(option_values.num_files > 1)
498                                 option_values.cmdline_forced_outfilename = 0;
499                         for(i = 0, retval = 0; i < option_values.num_files; i++) {
500                                 if(0 == strcmp(option_values.filenames[i], "-") && !first)
501                                         continue;
502                                 retval |= encode_file(option_values.filenames[i], first, i == (option_values.num_files-1));
503                                 first = false;
504                         }
505                         if(option_values.replay_gain && retval == 0) {
506                                 float album_gain, album_peak;
507                                 grabbag__replaygain_get_album(&album_gain, &album_peak);
508                                 for(i = 0; i < option_values.num_files; i++) {
509                                         const char *error, *outfilename = get_encoded_outfilename(option_values.filenames[i]);
510                                         if(0 == outfilename) {
511                                                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", option_values.filenames[i]);
512                                                 return 1;
513                                         }
514                                         if(0 == strcmp(option_values.filenames[i], "-")) {
515                                                 FLAC__ASSERT(0);
516                                                 /* double protection */
517                                                 flac__utils_printf(stderr, 1, "internal error\n");
518                                                 return 2;
519                                         }
520                                         if(0 != (error = grabbag__replaygain_store_to_file_album(outfilename, album_gain, album_peak, /*preserve_modtime=*/true))) {
521                                                 flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain album tags\n", outfilename);
522                                                 retval = 1;
523                                         }
524                                 }
525                         }
526                 }
527         }
528
529         return retval;
530 }
531
532 FLAC__bool init_options()
533 {
534         option_values.show_help = false;
535         option_values.show_explain = false;
536         option_values.mode_decode = false;
537         option_values.verify = false;
538         option_values.force_file_overwrite = false;
539         option_values.continue_through_decode_errors = false;
540         option_values.replaygain_synthesis_spec.apply = false;
541         option_values.replaygain_synthesis_spec.use_album_gain = true;
542         option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
543         option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_LOW;
544         option_values.replaygain_synthesis_spec.preamp = 0.0;
545         option_values.lax = false;
546         option_values.test_only = false;
547         option_values.analyze = false;
548         option_values.use_ogg = false;
549         option_values.has_serial_number = false;
550         option_values.serial_number = 0;
551         option_values.do_mid_side = true;
552         option_values.loose_mid_side = false;
553         option_values.do_exhaustive_model_search = false;
554         option_values.do_escape_coding = false;
555         option_values.do_qlp_coeff_prec_search = false;
556         option_values.force_to_stdout = false;
557         option_values.force_aiff_format = false;
558         option_values.force_raw_format = false;
559         option_values.delete_input = false;
560         option_values.replay_gain = false;
561         option_values.sector_align = false;
562         option_values.cmdline_forced_outfilename = 0;
563         option_values.output_prefix = 0;
564         option_values.aopts.do_residual_text = false;
565         option_values.aopts.do_residual_gnuplot = false;
566         option_values.padding = 4096;
567         option_values.max_lpc_order = 8;
568         option_values.qlp_coeff_precision = 0;
569         option_values.skip_specification = 0;
570         option_values.until_specification = 0;
571         option_values.cue_specification = 0;
572         option_values.format_is_big_endian = -1;
573         option_values.format_is_unsigned_samples = -1;
574         option_values.format_channels = -1;
575         option_values.format_bps = -1;
576         option_values.format_sample_rate = -1;
577         option_values.blocksize = -1;
578         option_values.min_residual_partition_order = -1;
579         option_values.max_residual_partition_order = -1;
580         option_values.rice_parameter_search_dist = -1;
581         option_values.requested_seek_points[0] = '\0';
582         option_values.num_requested_seek_points = -1;
583         option_values.cuesheet_filename = 0;
584         option_values.cued_seekpoints = true;
585
586         option_values.num_files = 0;
587         option_values.filenames = 0;
588
589         if(0 == (option_values.vorbis_comment = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)))
590                 return false;
591
592         option_values.debug.disable_constant_subframes = false;
593         option_values.debug.disable_fixed_subframes = false;
594         option_values.debug.disable_verbatim_subframes = false;
595
596         return true;
597 }
598
599 int parse_options(int argc, char *argv[])
600 {
601         int short_option;
602         int option_index = 1;
603         FLAC__bool had_error = false;
604         const char *short_opts = "0123456789ab:cdefFhHl:mMo:pP:q:r:sS:tT:vV";
605
606         while ((short_option = share__getopt_long(argc, argv, short_opts, long_options_, &option_index)) != -1) {
607                 switch (short_option) {
608                         case 0: /* long option with no equivalent short option */
609                                 had_error |= (parse_option(short_option, long_options_[option_index].name, share__optarg) != 0);
610                                 break;
611                         case '?':
612                         case ':':
613                                 had_error = true;
614                                 break;
615                         default: /* short option */
616                                 had_error |= (parse_option(short_option, 0, share__optarg) != 0);
617                                 break;
618                 }
619         }
620
621         if(had_error) {
622                 return 1;
623         }
624
625         FLAC__ASSERT(share__optind <= argc);
626
627         option_values.num_files = argc - share__optind;
628
629         if(option_values.num_files > 0) {
630                 unsigned i = 0;
631                 if(0 == (option_values.filenames = malloc(sizeof(char *) * option_values.num_files)))
632                         die("out of memory allocating space for file names list");
633                 while(share__optind < argc)
634                         option_values.filenames[i++] = local_strdup(argv[share__optind++]);
635         }
636
637         return 0;
638 }
639
640 int parse_option(int short_option, const char *long_option, const char *option_argument)
641 {
642         char *p;
643
644         if(short_option == 0) {
645                 FLAC__ASSERT(0 != long_option);
646                 if(0 == strcmp(long_option, "totally-silent")) {
647                         flac__utils_verbosity_ = 0;
648                 }
649                 else if(0 == strcmp(long_option, "delete-input-file")) {
650                         option_values.delete_input = true;
651                 }
652                 else if(0 == strcmp(long_option, "output-prefix")) {
653                         FLAC__ASSERT(0 != option_argument);
654                         option_values.output_prefix = option_argument;
655                 }
656                 else if(0 == strcmp(long_option, "skip")) {
657                         FLAC__ASSERT(0 != option_argument);
658                         option_values.skip_specification = option_argument;
659                 }
660                 else if(0 == strcmp(long_option, "until")) {
661                         FLAC__ASSERT(0 != option_argument);
662                         option_values.until_specification = option_argument;
663                 }
664                 else if(0 == strcmp(long_option, "cue")) {
665                         FLAC__ASSERT(0 != option_argument);
666                         option_values.cue_specification = option_argument;
667                 }
668                 else if(0 == strcmp(long_option, "apply-replaygain-which-is-not-lossless")) {
669                         option_values.replaygain_synthesis_spec.apply = true;
670                         if (0 != option_argument) {
671                                 char *p;
672                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__NONE;
673                                 option_values.replaygain_synthesis_spec.noise_shaping = NOISE_SHAPING_NONE;
674                                 option_values.replaygain_synthesis_spec.preamp = strtod(option_argument, &p);
675                                 for ( ; *p; p++) {
676                                         if (*p == 'a')
677                                                 option_values.replaygain_synthesis_spec.use_album_gain = true;
678                                         else if (*p == 't')
679                                                 option_values.replaygain_synthesis_spec.use_album_gain = false;
680                                         else if (*p == 'l')
681                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__PEAK;
682                                         else if (*p == 'L')
683                                                 option_values.replaygain_synthesis_spec.limiter = RGSS_LIMIT__HARD;
684                                         else if (*p == 'n' && p[1] >= '0' && p[1] <= '3') {
685                                                 option_values.replaygain_synthesis_spec.noise_shaping = p[1] - '0';
686                                                 p++;
687                                         }
688                                         else
689                                                 return usage_error("ERROR: bad specification string \"%s\" for --%s\n", option_argument, long_option);
690                                 }
691                         }
692                 }
693                 else if(0 == strcmp(long_option, "cuesheet")) {
694                         FLAC__ASSERT(0 != option_argument);
695                         option_values.cuesheet_filename = option_argument;
696                 }
697                 else if(0 == strcmp(long_option, "no-cued-seekpoints")) {
698                         option_values.cued_seekpoints = false;
699                 }
700                 else if(0 == strcmp(long_option, "super-secret-totally-impractical-compression-level")) {
701                         option_values.lax = true;
702                         option_values.do_exhaustive_model_search = true;
703                         option_values.do_escape_coding = true;
704                         option_values.do_mid_side = true;
705                         option_values.loose_mid_side = false;
706                         option_values.do_qlp_coeff_prec_search = true;
707                         option_values.min_residual_partition_order = 0;
708                         option_values.max_residual_partition_order = 16;
709                         option_values.rice_parameter_search_dist = 0;
710                         option_values.max_lpc_order = 32;
711                 }
712                 else if(0 == strcmp(long_option, "force-aiff-format")) {
713                         option_values.force_aiff_format = true;
714                 }
715                 else if(0 == strcmp(long_option, "force-raw-format")) {
716                         option_values.force_raw_format = true;
717                 }
718                 else if(0 == strcmp(long_option, "lax")) {
719                         option_values.lax = true;
720                 }
721                 else if(0 == strcmp(long_option, "replay-gain")) {
722                         option_values.replay_gain = true;
723                 }
724                 else if(0 == strcmp(long_option, "sector-align")) {
725                         option_values.sector_align = true;
726                 }
727 #ifdef FLAC__HAS_OGG
728                 else if(0 == strcmp(long_option, "ogg")) {
729                         option_values.use_ogg = true;
730                 }
731                 else if(0 == strcmp(long_option, "serial-number")) {
732                         option_values.has_serial_number = true;
733                         option_values.serial_number = atol(option_argument);
734                 }
735 #endif
736                 else if(0 == strcmp(long_option, "endian")) {
737                         FLAC__ASSERT(0 != option_argument);
738                         if(0 == strncmp(option_argument, "big", strlen(option_argument)))
739                                 option_values.format_is_big_endian = true;
740                         else if(0 == strncmp(option_argument, "little", strlen(option_argument)))
741                                 option_values.format_is_big_endian = false;
742                         else
743                                 return usage_error("ERROR: argument to --endian must be \"big\" or \"little\"\n");
744                 }
745                 else if(0 == strcmp(long_option, "channels")) {
746                         FLAC__ASSERT(0 != option_argument);
747                         option_values.format_channels = atoi(option_argument);
748                 }
749                 else if(0 == strcmp(long_option, "bps")) {
750                         FLAC__ASSERT(0 != option_argument);
751                         option_values.format_bps = atoi(option_argument);
752                 }
753                 else if(0 == strcmp(long_option, "sample-rate")) {
754                         FLAC__ASSERT(0 != option_argument);
755                         option_values.format_sample_rate = atoi(option_argument);
756                 }
757                 else if(0 == strcmp(long_option, "sign")) {
758                         FLAC__ASSERT(0 != option_argument);
759                         if(0 == strncmp(option_argument, "signed", strlen(option_argument)))
760                                 option_values.format_is_unsigned_samples = false;
761                         else if(0 == strncmp(option_argument, "unsigned", strlen(option_argument)))
762                                 option_values.format_is_unsigned_samples = true;
763                         else
764                                 return usage_error("ERROR: argument to --sign must be \"signed\" or \"unsigned\"\n");
765                 }
766                 else if(0 == strcmp(long_option, "residual-gnu-plot")) {
767                         option_values.aopts.do_residual_gnuplot = true;
768                 }
769                 else if(0 == strcmp(long_option, "residual-text")) {
770                         option_values.aopts.do_residual_text = true;
771                 }
772                 /*
773                  * negatives
774                  */
775                 else if(0 == strcmp(long_option, "no-decode-through-errors")) {
776                         option_values.continue_through_decode_errors = false;
777                 }
778                 else if(0 == strcmp(long_option, "no-silent")) {
779                         flac__utils_verbosity_ = 2;
780                 }
781                 else if(0 == strcmp(long_option, "no-force")) {
782                         option_values.force_file_overwrite = false;
783                 }
784                 else if(0 == strcmp(long_option, "no-seektable")) {
785                         option_values.num_requested_seek_points = 0;
786                         option_values.requested_seek_points[0] = '\0';
787                 }
788                 else if(0 == strcmp(long_option, "no-delete-input-file")) {
789                         option_values.delete_input = false;
790                 }
791                 else if(0 == strcmp(long_option, "no-replay-gain")) {
792                         option_values.replay_gain = false;
793                 }
794                 else if(0 == strcmp(long_option, "no-sector-align")) {
795                         option_values.sector_align = false;
796                 }
797                 else if(0 == strcmp(long_option, "no-lax")) {
798                         option_values.lax = false;
799                 }
800 #ifdef FLAC__HAS_OGG
801                 else if(0 == strcmp(long_option, "no-ogg")) {
802                         option_values.use_ogg = false;
803                 }
804 #endif
805                 else if(0 == strcmp(long_option, "no-exhaustive-model-search")) {
806                         option_values.do_exhaustive_model_search = false;
807                 }
808                 else if(0 == strcmp(long_option, "no-mid-side")) {
809                         option_values.do_mid_side = option_values.loose_mid_side = false;
810                 }
811                 else if(0 == strcmp(long_option, "no-adaptive-mid-side")) {
812                         option_values.loose_mid_side = option_values.do_mid_side = false;
813                 }
814                 else if(0 == strcmp(long_option, "no-qlp-coeff-prec-search")) {
815                         option_values.do_qlp_coeff_prec_search = false;
816                 }
817                 else if(0 == strcmp(long_option, "no-padding")) {
818                         option_values.padding = -1;
819                 }
820                 else if(0 == strcmp(long_option, "no-verify")) {
821                         option_values.verify = false;
822                 }
823                 else if(0 == strcmp(long_option, "no-residual-gnuplot")) {
824                         option_values.aopts.do_residual_gnuplot = false;
825                 }
826                 else if(0 == strcmp(long_option, "no-residual-text")) {
827                         option_values.aopts.do_residual_text = false;
828                 }
829                 else if(0 == strcmp(long_option, "disable-constant-subframes")) {
830                         option_values.debug.disable_constant_subframes = true;
831                 }
832                 else if(0 == strcmp(long_option, "disable-fixed-subframes")) {
833                         option_values.debug.disable_fixed_subframes = true;
834                 }
835                 else if(0 == strcmp(long_option, "disable-verbatim-subframes")) {
836                         option_values.debug.disable_verbatim_subframes = true;
837                 }
838         }
839         else {
840                 const char *violation;
841                 switch(short_option) {
842                         case 'h':
843                                 option_values.show_help = true;
844                                 break;
845                         case 'H':
846                                 option_values.show_explain = true;
847                                 break;
848                         case 'v':
849                                 option_values.show_version = true;
850                                 break;
851                         case 'd':
852                                 option_values.mode_decode = true;
853                                 break;
854                         case 'a':
855                                 option_values.mode_decode = true;
856                                 option_values.analyze = true;
857                                 break;
858                         case 't':
859                                 option_values.mode_decode = true;
860                                 option_values.test_only = true;
861                                 break;
862                         case 'c':
863                                 option_values.force_to_stdout = true;
864                                 break;
865                         case 's':
866                                 flac__utils_verbosity_ = 1;
867                                 break;
868                         case 'f':
869                                 option_values.force_file_overwrite = true;
870                                 break;
871                         case 'o':
872                                 FLAC__ASSERT(0 != option_argument);
873                                 option_values.cmdline_forced_outfilename = option_argument;
874                                 break;
875                         case 'F':
876                                 option_values.continue_through_decode_errors = true;
877                                 break;
878                         case 'T':
879                                 FLAC__ASSERT(0 != option_argument);
880                                 if(!flac__vorbiscomment_add(option_values.vorbis_comment, option_argument, &violation))
881                                         return usage_error("ERROR: (-T/--tag) %s\n", violation);
882                                 break;
883                         case '0':
884                                 option_values.do_exhaustive_model_search = false;
885                                 option_values.do_escape_coding = false;
886                                 option_values.do_mid_side = false;
887                                 option_values.loose_mid_side = false;
888                                 option_values.qlp_coeff_precision = 0;
889                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
890                                 option_values.rice_parameter_search_dist = 0;
891                                 option_values.max_lpc_order = 0;
892                                 break;
893                         case '1':
894                                 option_values.do_exhaustive_model_search = false;
895                                 option_values.do_escape_coding = false;
896                                 option_values.do_mid_side = true;
897                                 option_values.loose_mid_side = true;
898                                 option_values.qlp_coeff_precision = 0;
899                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 2;
900                                 option_values.rice_parameter_search_dist = 0;
901                                 option_values.max_lpc_order = 0;
902                                 break;
903                         case '2':
904                                 option_values.do_exhaustive_model_search = false;
905                                 option_values.do_escape_coding = false;
906                                 option_values.do_mid_side = true;
907                                 option_values.loose_mid_side = false;
908                                 option_values.qlp_coeff_precision = 0;
909                                 option_values.min_residual_partition_order = 0;
910                                 option_values.max_residual_partition_order = 3;
911                                 option_values.rice_parameter_search_dist = 0;
912                                 option_values.max_lpc_order = 0;
913                                 break;
914                         case '3':
915                                 option_values.do_exhaustive_model_search = false;
916                                 option_values.do_escape_coding = false;
917                                 option_values.do_mid_side = false;
918                                 option_values.loose_mid_side = false;
919                                 option_values.qlp_coeff_precision = 0;
920                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
921                                 option_values.rice_parameter_search_dist = 0;
922                                 option_values.max_lpc_order = 6;
923                                 break;
924                         case '4':
925                                 option_values.do_exhaustive_model_search = false;
926                                 option_values.do_escape_coding = false;
927                                 option_values.do_mid_side = true;
928                                 option_values.loose_mid_side = true;
929                                 option_values.qlp_coeff_precision = 0;
930                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
931                                 option_values.rice_parameter_search_dist = 0;
932                                 option_values.max_lpc_order = 8;
933                                 break;
934                         case '5':
935                                 option_values.do_exhaustive_model_search = false;
936                                 option_values.do_escape_coding = false;
937                                 option_values.do_mid_side = true;
938                                 option_values.loose_mid_side = false;
939                                 option_values.qlp_coeff_precision = 0;
940                                 option_values.min_residual_partition_order = option_values.max_residual_partition_order = 3;
941                                 option_values.rice_parameter_search_dist = 0;
942                                 option_values.max_lpc_order = 8;
943                                 break;
944                         case '6':
945                                 option_values.do_exhaustive_model_search = false;
946                                 option_values.do_escape_coding = false;
947                                 option_values.do_mid_side = true;
948                                 option_values.loose_mid_side = false;
949                                 option_values.qlp_coeff_precision = 0;
950                                 option_values.min_residual_partition_order = 0;
951                                 option_values.max_residual_partition_order = 4;
952                                 option_values.rice_parameter_search_dist = 0;
953                                 option_values.max_lpc_order = 8;
954                                 break;
955                         case '7':
956                                 option_values.do_exhaustive_model_search = true;
957                                 option_values.do_escape_coding = false;
958                                 option_values.do_mid_side = true;
959                                 option_values.loose_mid_side = false;
960                                 option_values.qlp_coeff_precision = 0;
961                                 option_values.min_residual_partition_order = 0;
962                                 option_values.max_residual_partition_order = 6;
963                                 option_values.rice_parameter_search_dist = 0;
964                                 option_values.max_lpc_order = 8;
965                                 break;
966                         case '8':
967                                 option_values.do_exhaustive_model_search = true;
968                                 option_values.do_escape_coding = false;
969                                 option_values.do_mid_side = true;
970                                 option_values.loose_mid_side = false;
971                                 option_values.qlp_coeff_precision = 0;
972                                 option_values.min_residual_partition_order = 0;
973                                 option_values.max_residual_partition_order = 6;
974                                 option_values.rice_parameter_search_dist = 0;
975                                 option_values.max_lpc_order = 12;
976                                 break;
977                         case '9':
978                                 return usage_error("ERROR: compression level '9' is reserved\n");
979                         case 'V':
980                                 option_values.verify = true;
981                                 break;
982                         case 'S':
983                                 FLAC__ASSERT(0 != option_argument);
984                                 if(option_values.num_requested_seek_points < 0)
985                                         option_values.num_requested_seek_points = 0;
986                                 option_values.num_requested_seek_points++;
987                                 if(strlen(option_values.requested_seek_points)+strlen(option_argument)+2 >= sizeof(option_values.requested_seek_points)) {
988                                         return usage_error("ERROR: too many seekpoints requested\n");
989                                 }
990                                 else {
991                                         strcat(option_values.requested_seek_points, option_argument);
992                                         strcat(option_values.requested_seek_points, ";");
993                                 }
994                                 break;
995                         case 'P':
996                                 FLAC__ASSERT(0 != option_argument);
997                                 option_values.padding = atoi(option_argument);
998                                 if(option_values.padding < 0)
999                                         return usage_error("ERROR: argument to -P must be >= 0\n");
1000                                 break;
1001                         case 'b':
1002                                 FLAC__ASSERT(0 != option_argument);
1003                                 option_values.blocksize = atoi(option_argument);
1004                                 break;
1005                         case 'e':
1006                                 option_values.do_exhaustive_model_search = true;
1007                                 break;
1008                         case 'E':
1009                                 option_values.do_escape_coding = true;
1010                                 break;
1011                         case 'l':
1012                                 FLAC__ASSERT(0 != option_argument);
1013                                 option_values.max_lpc_order = atoi(option_argument);
1014                                 break;
1015                         case 'm':
1016                                 option_values.do_mid_side = true;
1017                                 option_values.loose_mid_side = false;
1018                                 break;
1019                         case 'M':
1020                                 option_values.loose_mid_side = option_values.do_mid_side = true;
1021                                 break;
1022                         case 'p':
1023                                 option_values.do_qlp_coeff_prec_search = true;
1024                                 break;
1025                         case 'q':
1026                                 FLAC__ASSERT(0 != option_argument);
1027                                 option_values.qlp_coeff_precision = atoi(option_argument);
1028                                 break;
1029                         case 'r':
1030                                 FLAC__ASSERT(0 != option_argument);
1031                                 p = strchr(option_argument, ',');
1032                                 if(0 == p) {
1033                                         option_values.min_residual_partition_order = 0;
1034                                         option_values.max_residual_partition_order = atoi(option_argument);
1035                                 }
1036                                 else {
1037                                         option_values.min_residual_partition_order = atoi(option_argument);
1038                                         option_values.max_residual_partition_order = atoi(++p);
1039                                 }
1040                                 break;
1041                         case 'R':
1042                                 FLAC__ASSERT(0 != option_argument);
1043                                 option_values.rice_parameter_search_dist = atoi(option_argument);
1044                                 break;
1045                         default:
1046                                 FLAC__ASSERT(0);
1047                 }
1048         }
1049
1050         return 0;
1051 }
1052
1053 void free_options()
1054 {
1055         unsigned i;
1056         if(0 != option_values.filenames) {
1057                 for(i = 0; i < option_values.num_files; i++) {
1058                         if(0 != option_values.filenames[i])
1059                                 free(option_values.filenames[i]);
1060                 }
1061                 free(option_values.filenames);
1062         }
1063         if(0 != option_values.vorbis_comment)
1064                 FLAC__metadata_object_delete(option_values.vorbis_comment);
1065 }
1066
1067 int usage_error(const char *message, ...)
1068 {
1069         if(flac__utils_verbosity_ >= 1) {
1070                 va_list args;
1071
1072                 FLAC__ASSERT(0 != message);
1073
1074                 va_start(args, message);
1075
1076                 (void) vfprintf(stderr, message, args);
1077
1078                 va_end(args);
1079
1080                 printf("Type \"flac\" for a usage summary or \"flac --help\" for all options\n");
1081         }
1082
1083         return 1;
1084 }
1085
1086 void show_version()
1087 {
1088         printf("flac %s\n", FLAC__VERSION_STRING);
1089 }
1090
1091 static void usage_header()
1092 {
1093         printf("===============================================================================\n");
1094         printf("flac - Command-line FLAC encoder/decoder version %s\n", FLAC__VERSION_STRING);
1095         printf("Copyright (C) 2000,2001,2002,2003,2004  Josh Coalson\n");
1096         printf("\n");
1097         printf("This program is free software; you can redistribute it and/or\n");
1098         printf("modify it under the terms of the GNU General Public License\n");
1099         printf("as published by the Free Software Foundation; either version 2\n");
1100         printf("of the License, or (at your option) any later version.\n");
1101         printf("\n");
1102         printf("This program is distributed in the hope that it will be useful,\n");
1103         printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
1104         printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
1105         printf("GNU General Public License for more details.\n");
1106         printf("\n");
1107         printf("You should have received a copy of the GNU General Public License\n");
1108         printf("along with this program; if not, write to the Free Software\n");
1109         printf("Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.\n");
1110         printf("===============================================================================\n");
1111 }
1112
1113 static void usage_summary()
1114 {
1115         printf("Usage:\n");
1116         printf("\n");
1117         printf(" Encoding: flac [<general-options>] [<encoding/format-options>] [INPUTFILE [...]]\n");
1118         printf(" Decoding: flac -d [<general-options>] [<format-options>] [FLACFILE [...]]\n");
1119         printf("  Testing: flac -t [<general-options>] [FLACFILE [...]]\n");
1120         printf("Analyzing: flac -a [<general-options>] [<analysis-options>] [FLACFILE [...]]\n");
1121         printf("\n");
1122 }
1123
1124 void short_usage()
1125 {
1126         usage_header();
1127         printf("\n");
1128         printf("This is the short help; for all options use 'flac --help'; for even more\n");
1129         printf("instructions use 'flac --explain'\n");
1130         printf("\n");
1131         printf("To encode:\n");
1132         printf("  flac [-#] [INPUTFILE [...]]\n");
1133         printf("\n");
1134         printf("  -# is -0 (fastest compression) to -8 (highest compression); -5 is the default\n");
1135         printf("\n");
1136         printf("To decode:\n");
1137         printf("  flac -d [INPUTFILE [...]]\n");
1138         printf("\n");
1139         printf("To test:\n");
1140         printf("  flac -t [INPUTFILE [...]]\n");
1141 }
1142
1143 void show_help()
1144 {
1145         usage_header();
1146         usage_summary();
1147         printf("general options:\n");
1148         printf("  -v, --version                Show the flac version number\n");
1149         printf("  -h, --help                   Show this screen\n");
1150         printf("  -H, --explain                Show detailed explanation of usage and options\n");
1151         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1152         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1153         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1154         printf("  -c, --stdout                 Write output to stdout\n");
1155         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1156         printf("      --totally-silent         Do not print anything, including errors\n");
1157         printf("  -f, --force                  Force overwriting of output files\n");
1158         printf("  -o, --output-name=FILENAME   Force the output file name\n");
1159         printf("      --output-prefix=STRING   Prepend STRING to output names\n");
1160         printf("      --delete-input-file      Deletes after a successful encode/decode\n");
1161         printf("      --skip={#|mm:ss.ss}      Skip the given initial samples for each input\n");
1162         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample for each input file\n");
1163 #ifdef FLAC__HAS_OGG
1164         printf("      --ogg                    Use Ogg as transport layer\n");
1165         printf("      --serial-number          Serial number to use for the FLAC stream\n");
1166 #endif
1167         printf("analysis options:\n");
1168         printf("      --residual-text          Include residual signal in text output\n");
1169         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1170         printf("decoding options:\n");
1171         printf("  -F, --decode-through-errors  Continue decoding through stream errors\n");
1172         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to decode\n");
1173         printf("encoding options:\n");
1174         printf("  -V, --verify                 Verify a correct encoding\n");
1175         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1176         printf("      --sector-align           Align multiple files on sector boundaries\n");
1177         printf("      --replay-gain            Calculate ReplayGain & store in Vorbis comments\n");
1178         printf("      --cuesheet=FILENAME      Import cuesheet and store in CUESHEET block\n");
1179         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment; may appear multiple times\n");
1180         printf("  -S, --seekpoint={#|X|#x|#s}  Add seek point(s)\n");
1181         printf("  -P, --padding=#              Write a PADDING block of length #\n");
1182         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1183         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1184         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1185         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1186         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1187         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1188         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1189         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1190         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1191         printf("  -b, --blocksize=#                  Specify blocksize in samples\n");
1192         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1193         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1194         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1195         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1196         printf("  -p, --qlp-coeff-precision-search   Exhaustively search LP coeff quantization\n");
1197         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits\n");
1198         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1199         printf("format options:\n");
1200         printf("      --endian={big|little}    Set byte order for samples\n");
1201         printf("      --channels=#             Number of channels\n");
1202         printf("      --bps=#                  Number of bits per sample\n");
1203         printf("      --sample-rate=#          Sample rate in Hz\n");
1204         printf("      --sign={signed|unsigned} Sign of samples\n");
1205         printf("      --force-aiff-format      Force decoding to AIFF format\n");
1206         printf("      --force-raw-format       Treat input or output as raw samples\n");
1207         printf("negative options:\n");
1208         printf("      --no-adaptive-mid-side\n");
1209         printf("      --no-decode-through-errors\n");
1210         printf("      --no-delete-input-file\n");
1211         printf("      --no-exhaustive-model-search\n");
1212         printf("      --no-lax\n");
1213         printf("      --no-mid-side\n");
1214 #ifdef FLAC__HAS_OGG
1215         printf("      --no-ogg\n");
1216 #endif
1217         printf("      --no-padding\n");
1218         printf("      --no-qlp-coeff-prec-search\n");
1219         printf("      --no-replay-gain\n");
1220         printf("      --no-residual-gnuplot\n");
1221         printf("      --no-residual-text\n");
1222         printf("      --no-sector-align\n");
1223         printf("      --no-seektable\n");
1224         printf("      --no-silent\n");
1225         printf("      --no-force\n");
1226         printf("      --no-verify\n");
1227 }
1228
1229 void show_explain()
1230 {
1231         usage_header();
1232         usage_summary();
1233         printf("For encoding:\n");
1234         printf("  The input file(s) may be a PCM RIFF WAVE file, AIFF file, or raw samples.\n");
1235         printf("  The output file(s) will be in native FLAC or Ogg FLAC format\n");
1236         printf("For decoding, the reverse is true.\n");
1237         printf("\n");
1238         printf("A single INPUTFILE may be - for stdin.  No INPUTFILE implies stdin.  Use of\n");
1239         printf("stdin implies -c (write to stdout).  Normally you should use:\n");
1240         printf("   flac [options] -o outfilename  or  flac -d [options] -o outfilename\n");
1241         printf("instead of:\n");
1242         printf("   flac [options] > outfilename   or  flac -d [options] > outfilename\n");
1243         printf("since the former allows flac to seek backwards to write the STREAMINFO or\n");
1244         printf("WAVE/AIFF header contents when necessary.\n");
1245         printf("\n");
1246         printf("flac checks for the presence of a AIFF/WAVE header to decide whether or not to\n");
1247         printf("treat an input file as AIFF/WAVE format or raw samples.  If any input file is\n");
1248         printf("raw you must specify the format options {-fb|fl} -fc -fp and -fs, which will\n");
1249         printf("apply to all raw files.  You can force AIFF/WAVE files to be treated as raw\n");
1250         printf("files using -fr.\n");
1251         printf("\n");
1252         printf("general options:\n");
1253         printf("  -v, --version                Show the flac version number\n");
1254         printf("  -h, --help                   Show basic usage a list of all options\n");
1255         printf("  -H, --explain                Show this screen\n");
1256         printf("  -d, --decode                 Decode (the default behavior is to encode)\n");
1257         printf("  -t, --test                   Same as -d except no decoded file is written\n");
1258         printf("  -a, --analyze                Same as -d except an analysis file is written\n");
1259         printf("  -c, --stdout                 Write output to stdout\n");
1260         printf("  -s, --silent                 Do not write runtime encode/decode statistics\n");
1261         printf("      --totally-silent         Do not print anything of any kind, including\n");
1262         printf("                               warnings or errors.  The exit code will be the\n");
1263         printf("                               only way to determine successful completion.\n");
1264         printf("  -f, --force                  Force overwriting of output files\n");
1265         printf("  -o, --output-name=FILENAME   Force the output file name; usually flac just\n");
1266         printf("                               changes the extension.  May only be used when\n");
1267         printf("                               encoding a single file.  May not be used in\n");
1268         printf("                               conjunction with --output-prefix.\n");
1269         printf("      --output-prefix=STRING   Prefix each output file name with the given\n");
1270         printf("                               STRING.  This can be useful for encoding or\n");
1271         printf("                               decoding files to a different directory.  Make\n");
1272         printf("                               sure if your STRING is a path name that it ends\n");
1273         printf("                               with a '/' slash.\n");
1274         printf("      --delete-input-file      Automatically delete the input file after a\n");
1275         printf("                               successful encode or decode.  If there was an\n");
1276         printf("                               error (including a verify error) the input file\n");
1277         printf("                               is left intact.\n");
1278         printf("      --skip={#|mm:ss.ss}      Skip the first # samples of each input file; can\n");
1279         printf("                               be used both for encoding and decoding.  The\n");
1280         printf("                               alternative form mm:ss.ss can be used to specify\n");
1281         printf("                               minutes, seconds, and fractions of a second.\n");
1282         printf("      --until={#|[+|-]mm:ss.ss}  Stop at the given sample number for each input\n");
1283         printf("                               file.  The given sample number is not included\n");
1284         printf("                               in the decoded output.  The alternative form\n");
1285         printf("                               mm:ss.ss can be used to specify minutes,\n");
1286         printf("                               seconds, and fractions of a second.  If a `+'\n");
1287         printf("                               sign is at the beginning, the --until point is\n");
1288         printf("                               relative to the --skip point.  If a `-' sign is\n");
1289         printf("                               at the beginning, the --until point is relative\n");
1290         printf("                               to end of the audio.\n");
1291 #ifdef FLAC__HAS_OGG
1292         printf("      --ogg                    When encoding, generate Ogg-FLAC output instead\n");
1293         printf("                               of native-FLAC.  Ogg-FLAC streams are FLAC\n");
1294         printf("                               streams wrapped in an Ogg transport layer.  The\n");
1295         printf("                               resulting file should have an '.ogg' extension\n");
1296         printf("                               and will still be decodable by flac.  When\n");
1297         printf("                               decoding, force the input to be treated as\n");
1298         printf("                               Ogg-FLAC.  This is useful when piping input\n");
1299         printf("                               from stdin or when the filename does not end in\n");
1300         printf("                               '.ogg'.\n");
1301         printf("      --serial-number          Serial number to use for the FLAC stream.  When\n");
1302         printf("                               encoding and no serial number is given, flac\n");
1303         printf("                               uses '0'.  When decoding and no number is\n");
1304         printf("                               given, flac uses the serial number of the first\n");
1305         printf("                               page.\n");
1306 #endif
1307         printf("analysis options:\n");
1308         printf("      --residual-text          Include residual signal in text output.  This\n");
1309         printf("                               will make the file very big, much larger than\n");
1310         printf("                               even the decoded file.\n");
1311         printf("      --residual-gnuplot       Generate gnuplot files of residual distribution\n");
1312         printf("                               of each subframe\n");
1313         printf("decoding options:\n");
1314         printf("  -F, --decode-through-errors  By default flac stops decoding with an error\n");
1315         printf("                               and removes the partially decoded file if it\n");
1316         printf("                               encounters a bitstream error.  With -F, errors\n");
1317         printf("                               are still printed but flac will continue\n");
1318         printf("                               decoding to completion.  Note that errors may\n");
1319         printf("                               cause the decoded audio to be missing some\n");
1320         printf("                               samples or have silent sections.\n");
1321         printf("      --cue=[#.#][-[#.#]]      Set the beginning and ending cuepoints to\n");
1322         printf("                               decode.  The optional first #.# is the track and\n");
1323         printf("                               index point at which decoding will start; the\n");
1324         printf("                               default is the beginning of the stream.  The\n");
1325         printf("                               optional second #.# is the track and index point\n");
1326         printf("                               at which decoding will end; the default is the\n");
1327         printf("                               end of the stream.  If the seekpoint does not\n");
1328         printf("                               exist, the closest one before it (for the start\n");
1329         printf("                               point) or after it (for the end point) will be\n");
1330         printf("                               used.  The cuepoints are merely translated into\n");
1331         printf("                               sample numbers then used as --skip and --until.\n");
1332         printf("encoding options:\n");
1333         printf("  -V, --verify                 Verify a correct encoding by decoding the\n");
1334         printf("                               output in parallel and comparing to the\n");
1335         printf("                               original\n");
1336         printf("      --lax                    Allow encoder to generate non-Subset files\n");
1337         printf("      --sector-align           Align encoding of multiple CD format WAVE files\n");
1338         printf("                               on sector boundaries.\n");
1339         printf("      --replay-gain            Calculate ReplayGain values and store in Vorbis\n");
1340         printf("                               comments.  Title gains/peaks will be computed\n");
1341         printf("                               for each file, and an album gain/peak will be\n");
1342         printf("                               computed for all files.  All input files must\n");
1343         printf("                               have the same resolution, sample rate, and\n");
1344         printf("                               number of channels.  The sample rate must be\n");
1345         printf("                               one of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1,\n");
1346         printf("                               or 48 kHz.  NOTE: this option may also leave a\n");
1347         printf("                               few extra bytes in the PADDING block.\n");
1348         printf("      --cuesheet=FILENAME      Import the given cuesheet file and store it in\n");
1349         printf("                               a CUESHEET metadata block.  This option may only\n");
1350         printf("                               be used when encoding a single file.  A\n");
1351         printf("                               seekpoint will be added for each index point in\n");
1352         printf("                               the cuesheet to the SEEKTABLE unless\n");
1353         printf("                               --no-cued-seekpoints is specified.\n");
1354         printf("  -T, --tag=FIELD=VALUE        Add a Vorbis comment.  Make sure to quote the\n");
1355         printf("                               comment if necessary.  This option may appear\n");
1356         printf("                               more than once to add several comments.  NOTE:\n");
1357         printf("                               all tags will be added to all encoded files.\n");
1358         printf("  -S, --seekpoint={#|X|#x|#s}  Include a point or points in a SEEKTABLE\n");
1359         printf("       #  : a specific sample number for a seek point\n");
1360         printf("       X  : a placeholder point (always goes at the end of the SEEKTABLE)\n");
1361         printf("       #x : # evenly spaced seekpoints, the first being at sample 0\n");
1362         printf("       #s : a seekpoint every # seconds; # does not have to be a whole number\n");
1363         printf("     You may use many -S options; the resulting SEEKTABLE will be the unique-\n");
1364         printf("           ified union of all such values.\n");
1365         printf("     With no -S options, flac defaults to '-S 10s'.  Use -S- for no SEEKTABLE.\n");
1366         printf("     Note: -S #x and -S #s will not work if the encoder can't determine the\n");
1367         printf("           input size before starting.\n");
1368         printf("     Note: if you use -S # and # is >= samples in the input, there will be\n");
1369         printf("           either no seek point entered (if the input size is determinable\n");
1370         printf("           before encoding starts) or a placeholder point (if input size is not\n");
1371         printf("           determinable)\n");
1372         printf("  -P, --padding=#              Tell the encoder to write a PADDING metadata\n");
1373         printf("                               block of the given length (in bytes) after the\n");
1374         printf("                               STREAMINFO block.  This is useful if you plan\n");
1375         printf("                               to tag the file later with an APPLICATION\n");
1376         printf("                               block; instead of having to rewrite the entire\n");
1377         printf("                               file later just to insert your block, you can\n");
1378         printf("                               write directly over the PADDING block.  Note\n");
1379         printf("                               that the total length of the PADDING block will\n");
1380         printf("                               be 4 bytes longer than the length given because\n");
1381         printf("                               of the 4 metadata block header bytes.  You can\n");
1382         printf("                               force no PADDING block at all to be written with\n");
1383         printf("                               --no-padding.  The encoder writes a PADDING\n");
1384         printf("                               block of 4096 bytes by default.\n");
1385         printf("  -b, --blocksize=#            Specify the blocksize in samples; the default is\n");
1386         printf("                               1152 for -l 0, else 4608; must be one of 192,\n");
1387         printf("                               576, 1152, 2304, 4608, 256, 512, 1024, 2048,\n");
1388         printf("                               4096, 8192, 16384, or 32768 (unless --lax is\n");
1389         printf("                               used)\n");
1390         printf("  -0, --compression-level-0, --fast  Synonymous with -l 0 -b 1152 -r 2,2\n");
1391         printf("  -1, --compression-level-1          Synonymous with -l 0 -b 1152 -M -r 2,2\n");
1392         printf("  -2, --compression-level-2          Synonymous with -l 0 -b 1152 -m -r 3\n");
1393         printf("  -3, --compression-level-3          Synonymous with -l 6 -b 4608 -r 3,3\n");
1394         printf("  -4, --compression-level-4          Synonymous with -l 8 -b 4608 -M -r 3,3\n");
1395         printf("  -5, --compression-level-5          Synonymous with -l 8 -b 4608 -m -r 3,3\n");
1396         printf("                                     -5 is the default setting\n");
1397         printf("  -6, --compression-level-6          Synonymous with -l 8 -b 4608 -m -r 4\n");
1398         printf("  -7, --compression-level-7          Synonymous with -l 8 -b 4608 -m -e -r 6\n");
1399         printf("  -8, --compression-level-8, --best  Synonymous with -l 12 -b 4608 -m -e -r 6\n");
1400         printf("  -m, --mid-side                     Try mid-side coding for each frame\n");
1401         printf("                                     (stereo only)\n");
1402         printf("  -M, --adaptive-mid-side            Adaptive mid-side coding for all frames\n");
1403         printf("                                     (stereo only)\n");
1404         printf("  -e, --exhaustive-model-search      Do exhaustive model search (expensive!)\n");
1405         printf("  -l, --max-lpc-order=#              Max LPC order; 0 => only fixed predictors\n");
1406         printf("  -p, --qlp-coeff-precision-search   Do exhaustive search of LP coefficient\n");
1407         printf("                                     quantization (expensive!); overrides -q;\n");
1408         printf("                                     does nothing if using -l 0\n");
1409         printf("  -q, --qlp-coeff-precision=#        Specify precision in bits of quantized\n");
1410         printf("                                     linear-predictor coefficients; 0 => let\n");
1411         printf("                                     encoder decide (the minimun is %u, the\n", FLAC__MIN_QLP_COEFF_PRECISION);
1412         printf("                                     default is -q 0)\n");
1413         printf("  -r, --rice-partition-order=[#,]#   Set [min,]max residual partition order\n");
1414         printf("                                     (# is 0..16; min defaults to 0; the\n");
1415         printf("                                     default is -r 0; above 4 doesn't usually\n");
1416         printf("                                     help much)\n");
1417         printf("format options:\n");
1418         printf("      --endian={big|little}    Set byte order for samples\n");
1419         printf("      --channels=#             Number of channels\n");
1420         printf("      --bps=#                  Number of bits per sample\n");
1421         printf("      --sample-rate=#          Sample rate in Hz\n");
1422         printf("      --sign={signed|unsigned} Sign of samples (the default is signed)\n");
1423         printf("      --force-aiff-format      Force the decoder to output AIFF format.  This\n");
1424         printf("                               option is not needed if the output filename (as\n");
1425         printf("                               set by -o) ends with .aif or .aiff; this option\n");
1426         printf("                               has no effect when encoding since input AIFF is\n");
1427         printf("                               auto-detected.\n");
1428         printf("      --force-raw-format       Force input (when encoding) or output (when\n");
1429         printf("                               decoding) to be treated as raw samples\n");
1430         printf("negative options:\n");
1431         printf("      --no-adaptive-mid-side\n");
1432         printf("      --no-decode-through-errors\n");
1433         printf("      --no-delete-input-file\n");
1434         printf("      --no-exhaustive-model-search\n");
1435         printf("      --no-lax\n");
1436         printf("      --no-mid-side\n");
1437 #ifdef FLAC__HAS_OGG
1438         printf("      --no-ogg\n");
1439 #endif
1440         printf("      --no-padding\n");
1441         printf("      --no-qlp-coeff-prec-search\n");
1442         printf("      --no-residual-gnuplot\n");
1443         printf("      --no-residual-text\n");
1444         printf("      --no-sector-align\n");
1445         printf("      --no-seektable\n");
1446         printf("      --no-silent\n");
1447         printf("      --no-force\n");
1448         printf("      --no-verify\n");
1449 }
1450
1451 void format_mistake(const char *infilename, const char *wrong, const char *right)
1452 {
1453         flac__utils_printf(stderr, 1, "WARNING: %s is not a %s file; treating as a %s file\n", infilename, wrong, right);
1454 }
1455
1456 int encode_file(const char *infilename, FLAC__bool is_first_file, FLAC__bool is_last_file)
1457 {
1458         FILE *encode_infile;
1459         FLAC__byte lookahead[12];
1460         unsigned lookahead_length = 0;
1461         FileFormat fmt= RAW;
1462         int retval;
1463         long infilesize;
1464         encode_options_t common_options;
1465         const char *outfilename = get_encoded_outfilename(infilename);
1466
1467         if(0 == outfilename) {
1468                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1469                 return 1;
1470         }
1471
1472         /*
1473          * Error if output file already exists (and -f not used).
1474          * Use grabbag__file_get_filesize() as a cheap way to check.
1475          */
1476         if(!option_values.test_only && !option_values.force_file_overwrite && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1477                 flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1478                 return 1;
1479         }
1480
1481         if(0 == strcmp(infilename, "-")) {
1482                 infilesize = -1;
1483                 encode_infile = grabbag__file_get_binary_stdin();
1484         }
1485         else {
1486                 infilesize = grabbag__file_get_filesize(infilename);
1487                 if(0 == (encode_infile = fopen(infilename, "rb"))) {
1488                         flac__utils_printf(stderr, 1, "ERROR: can't open input file %s\n", infilename);
1489                         return 1;
1490                 }
1491         }
1492
1493         if(!option_values.force_raw_format) {
1494                 /* first set format based on name */
1495                 if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".wav"))
1496                         fmt= WAV;
1497                 else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".aif"))
1498                         fmt= AIF;
1499                 else if(strlen(infilename) >= 5 && 0 == strcasecmp(infilename+(strlen(infilename)-5), ".aiff"))
1500                         fmt= AIF;
1501
1502                 /* attempt to guess the file type based on the first 12 bytes */
1503                 if((lookahead_length = fread(lookahead, 1, 12, encode_infile)) < 12) {
1504                         if(fmt != RAW)
1505                                 format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1506                         fmt= RAW;
1507                 }
1508                 else {
1509                         if(!strncmp((const char *)lookahead, "RIFF", 4) && !strncmp((const char *)lookahead+8, "WAVE", 4))
1510                                 fmt= WAV;
1511                         else if(!strncmp((const char *)lookahead, "FORM", 4) && !strncmp((const char *)lookahead+8, "AIFF", 4))
1512                                 fmt= AIF;
1513                         else {
1514                                 if(fmt != RAW)
1515                                         format_mistake(infilename, fmt == AIF ? "AIFF" : "WAVE", "raw");
1516                                 fmt= RAW;
1517                         }
1518                 }
1519         }
1520
1521         if(option_values.sector_align && fmt == RAW && infilesize < 0) {
1522                 flac__utils_printf(stderr, 1, "ERROR: can't --sector-align when the input size is unknown\n");
1523                 return 1;
1524         }
1525
1526         if(fmt == RAW) {
1527                 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)
1528                         return usage_error("ERROR: for encoding a raw file you must specify a value for --endian, --sign, --channels, --bps, and --sample-rate\n");
1529         }
1530
1531         if(encode_infile == stdin || option_values.force_to_stdout) {
1532                 if(option_values.replay_gain)
1533                         return usage_error("ERROR: --replay-gain cannot be used when encoding to stdout\n");
1534         }
1535
1536         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1537                 return usage_error("ERROR: invalid value for --skip\n");
1538
1539         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 */
1540                 return usage_error("ERROR: invalid value for --until\n");
1541         /* if there is no "--until" we want to default to "--until=-0" */
1542         if(0 == option_values.until_specification)
1543                 common_options.until_specification.is_relative = true;
1544
1545         common_options.verify = option_values.verify;
1546 #ifdef FLAC__HAS_OGG
1547         common_options.use_ogg = option_values.use_ogg;
1548         /* set a random serial number if one has not yet been specified */
1549         if(!option_values.has_serial_number) {
1550                 srand(time(0));
1551                 option_values.serial_number = rand();
1552                 option_values.has_serial_number = true;
1553         }
1554         common_options.serial_number = option_values.serial_number++;
1555 #endif
1556         common_options.lax = option_values.lax;
1557         common_options.do_mid_side = option_values.do_mid_side;
1558         common_options.loose_mid_side = option_values.loose_mid_side;
1559         common_options.do_exhaustive_model_search = option_values.do_exhaustive_model_search;
1560         common_options.do_escape_coding = option_values.do_escape_coding;
1561         common_options.do_qlp_coeff_prec_search = option_values.do_qlp_coeff_prec_search;
1562         common_options.min_residual_partition_order = option_values.min_residual_partition_order;
1563         common_options.max_residual_partition_order = option_values.max_residual_partition_order;
1564         common_options.rice_parameter_search_dist = option_values.rice_parameter_search_dist;
1565         common_options.max_lpc_order = option_values.max_lpc_order;
1566         common_options.blocksize = (unsigned)option_values.blocksize;
1567         common_options.qlp_coeff_precision = option_values.qlp_coeff_precision;
1568         common_options.padding = option_values.padding;
1569         common_options.requested_seek_points = option_values.requested_seek_points;
1570         common_options.num_requested_seek_points = option_values.num_requested_seek_points;
1571         common_options.cuesheet_filename = option_values.cuesheet_filename;
1572         common_options.cued_seekpoints = option_values.cued_seekpoints;
1573         common_options.is_first_file = is_first_file;
1574         common_options.is_last_file = is_last_file;
1575         common_options.align_reservoir = align_reservoir;
1576         common_options.align_reservoir_samples = &align_reservoir_samples;
1577         common_options.replay_gain = option_values.replay_gain;
1578         common_options.sector_align = option_values.sector_align;
1579         common_options.vorbis_comment = option_values.vorbis_comment;
1580         common_options.debug.disable_constant_subframes = option_values.debug.disable_constant_subframes;
1581         common_options.debug.disable_fixed_subframes = option_values.debug.disable_fixed_subframes;
1582         common_options.debug.disable_verbatim_subframes = option_values.debug.disable_verbatim_subframes;
1583
1584         if(fmt == RAW) {
1585                 raw_encode_options_t options;
1586
1587                 options.common = common_options;
1588                 options.is_big_endian = option_values.format_is_big_endian;
1589                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1590                 options.channels = option_values.format_channels;
1591                 options.bps = option_values.format_bps;
1592                 options.sample_rate = option_values.format_sample_rate;
1593
1594                 retval = flac__encode_raw(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1595         }
1596         else {
1597                 wav_encode_options_t options;
1598
1599                 options.common = common_options;
1600
1601                 if(fmt == AIF)
1602                         retval = flac__encode_aif(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1603                 else
1604                         retval = flac__encode_wav(encode_infile, infilesize, infilename, outfilename, lookahead, lookahead_length, options);
1605         }
1606
1607         if(retval == 0 && strcmp(infilename, "-")) {
1608                 if(strcmp(outfilename, "-")) {
1609                         if(option_values.replay_gain) {
1610                                 float title_gain, title_peak;
1611                                 const char *error;
1612                                 grabbag__replaygain_get_title(&title_gain, &title_peak);
1613                                 if(0 != (error = grabbag__replaygain_store_to_file_title(outfilename, title_gain, title_peak, /*preserve_modtime=*/true))) {
1614                                         flac__utils_printf(stderr, 1, "%s: ERROR writing ReplayGain title tags\n", outfilename);
1615                                 }
1616                         }
1617                         grabbag__file_copy_metadata(infilename, outfilename);
1618                 }
1619                 if(option_values.delete_input)
1620                         unlink(infilename);
1621         }
1622
1623         return retval;
1624 }
1625
1626 int decode_file(const char *infilename)
1627 {
1628         int retval;
1629         FLAC__bool treat_as_ogg = false;
1630         decode_options_t common_options;
1631         const char *outfilename = get_decoded_outfilename(infilename);
1632
1633         if(0 == outfilename) {
1634                 flac__utils_printf(stderr, 1, "ERROR: filename too long: %s", infilename);
1635                 return 1;
1636         }
1637
1638         /*
1639          * Error if output file already exists (and -f not used).
1640          * Use grabbag__file_get_filesize() as a cheap way to check.
1641          */
1642         if(!option_values.test_only && !option_values.force_file_overwrite && grabbag__file_get_filesize(outfilename) != (off_t)(-1)) {
1643                 flac__utils_printf(stderr, 1, "ERROR: output file %s already exists, use -f to override\n", outfilename);
1644                 return 1;
1645         }
1646
1647         if(!option_values.test_only && !option_values.analyze) {
1648                 if(option_values.force_raw_format && (option_values.format_is_big_endian < 0 || option_values.format_is_unsigned_samples < 0))
1649                         return usage_error("ERROR: for decoding to a raw file you must specify a value for --endian and --sign\n");
1650         }
1651
1652         if(option_values.use_ogg)
1653                 treat_as_ogg = true;
1654         else if(strlen(infilename) >= 4 && 0 == strcasecmp(infilename+(strlen(infilename)-4), ".ogg"))
1655                 treat_as_ogg = true;
1656         else
1657                 treat_as_ogg = false;
1658
1659 #ifndef FLAC__HAS_OGG
1660         if(treat_as_ogg) {
1661                 flac__utils_printf(stderr, 1, "%s: Ogg support has not been built into this copy of flac\n", infilename);
1662                 return 1;
1663         }
1664 #endif
1665
1666         if(!flac__utils_parse_skip_until_specification(option_values.skip_specification, &common_options.skip_specification) || common_options.skip_specification.is_relative)
1667                 return usage_error("ERROR: invalid value for --skip\n");
1668
1669         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 */
1670                 return usage_error("ERROR: invalid value for --until\n");
1671         /* if there is no "--until" we want to default to "--until=-0" */
1672         if(0 == option_values.until_specification)
1673                 common_options.until_specification.is_relative = true;
1674
1675         if(option_values.cue_specification) {
1676                 if(!flac__utils_parse_cue_specification(option_values.cue_specification, &common_options.cue_specification))
1677                         return usage_error("ERROR: invalid value for --cue\n");
1678                 common_options.has_cue_specification = true;
1679         }
1680         else
1681                 common_options.has_cue_specification = false;
1682
1683         common_options.continue_through_decode_errors = option_values.continue_through_decode_errors;
1684         common_options.replaygain_synthesis_spec = option_values.replaygain_synthesis_spec;
1685 #ifdef FLAC__HAS_OGG
1686         common_options.is_ogg = treat_as_ogg;
1687         common_options.use_first_serial_number = !option_values.has_serial_number;
1688         common_options.serial_number = option_values.serial_number;
1689 #endif
1690
1691         if(!option_values.force_raw_format) {
1692                 wav_decode_options_t options;
1693
1694                 options.common = common_options;
1695
1696                 if(
1697                         option_values.force_aiff_format ||
1698                         (strlen(outfilename) >= 4 && 0 == strcasecmp(outfilename+(strlen(outfilename)-4), ".aif")) ||
1699                         (strlen(outfilename) >= 5 && 0 == strcasecmp(outfilename+(strlen(outfilename)-5), ".aiff"))
1700                 )
1701                         retval = flac__decode_aiff(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1702                 else
1703                         retval = flac__decode_wav(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1704         }
1705         else {
1706                 raw_decode_options_t options;
1707
1708                 options.common = common_options;
1709                 options.is_big_endian = option_values.format_is_big_endian;
1710                 options.is_unsigned_samples = option_values.format_is_unsigned_samples;
1711
1712                 retval = flac__decode_raw(infilename, option_values.test_only? 0 : outfilename, option_values.analyze, option_values.aopts, options);
1713         }
1714
1715         if(retval == 0 && strcmp(infilename, "-")) {
1716                 if(strcmp(outfilename, "-"))
1717                         grabbag__file_copy_metadata(infilename, outfilename);
1718                 if(option_values.delete_input && !option_values.test_only && !option_values.analyze)
1719                         unlink(infilename);
1720         }
1721
1722         return retval;
1723 }
1724
1725 const char *get_encoded_outfilename(const char *infilename)
1726 {
1727         const char *suffix = (option_values.use_ogg? ".ogg" : ".flac");
1728         return get_outfilename(infilename, suffix);
1729 }
1730
1731 const char *get_decoded_outfilename(const char *infilename)
1732 {
1733         const char *suffix;
1734         if(option_values.analyze) {
1735                 suffix = ".ana";
1736         }
1737         else if(option_values.force_raw_format) {
1738                 suffix = ".raw";
1739         }
1740         else if(option_values.force_aiff_format) {
1741                 suffix = ".aiff";
1742         }
1743         else {
1744                 suffix = ".wav";
1745         }
1746         return get_outfilename(infilename, suffix);
1747 }
1748
1749 const char *get_outfilename(const char *infilename, const char *suffix)
1750 {
1751         if(0 == option_values.cmdline_forced_outfilename) {
1752                 static char buffer[4096]; /* @@@ bad MAGIC NUMBER */
1753
1754                 if(0 == strcmp(infilename, "-") || option_values.force_to_stdout) {
1755                         strcpy(buffer, "-");
1756                 }
1757                 else {
1758                         char *p;
1759                         if (flac__strlcpy(buffer, option_values.output_prefix? option_values.output_prefix : "", sizeof buffer) >= sizeof buffer)
1760                                 return 0;
1761                         if (flac__strlcat(buffer, infilename, sizeof buffer) >= sizeof buffer)
1762                                 return 0;
1763                         if(0 == (p = strrchr(buffer, '.'))) {
1764                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1765                                         return 0;
1766                         }
1767                         else {
1768                                 if(0 == strcmp(p, suffix)) {
1769                                         *p = '\0';
1770                                         if (flac__strlcat(buffer, "_new", sizeof buffer) >= sizeof buffer)
1771                                                 return 0;
1772                                 }
1773                                 else {
1774                                         *p = '\0';
1775                                 }
1776                                 if (flac__strlcat(buffer, suffix, sizeof buffer) >= sizeof buffer)
1777                                         return 0;
1778                         }
1779                 }
1780                 return buffer;
1781         }
1782         else
1783                 return option_values.cmdline_forced_outfilename;
1784 }
1785
1786 void die(const char *message)
1787 {
1788         FLAC__ASSERT(0 != message);
1789         flac__utils_printf(stderr, 1, "ERROR: %s\n", message);
1790         exit(1);
1791 }
1792
1793 char *local_strdup(const char *source)
1794 {
1795         char *ret;
1796         FLAC__ASSERT(0 != source);
1797         if(0 == (ret = strdup(source)))
1798                 die("out of memory during strdup()");
1799         return ret;
1800 }