b19336b815bc2b842e3f2b57f4cf4553ac5fb5e6
[flac.git] / src / flac / encode.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 #if defined _WIN32 && !defined __CYGWIN__
20 /* where MSVC puts unlink() */
21 # include <io.h>
22 #else
23 # include <unistd.h>
24 #endif
25 #include <limits.h> /* for LONG_MAX */
26 #include <math.h> /* for floor() */
27 #include <stdarg.h>
28 #include <stdio.h> /* for FILE etc. */
29 #include <stdlib.h> /* for malloc */
30 #include <string.h> /* for strcmp() */
31 #include "FLAC/all.h"
32 #include "share/grabbag.h"
33 #include "encode.h"
34
35 #ifdef HAVE_CONFIG_H
36 #include <config.h>
37 #endif
38
39 #ifdef FLAC__HAS_OGG
40 #include "OggFLAC/stream_encoder.h"
41 #include "OggFLAC/file_encoder.h"
42 #endif
43
44 #ifdef min
45 #undef min
46 #endif
47 #define min(x,y) ((x)<(y)?(x):(y))
48 #ifdef max
49 #undef max
50 #endif
51 #define max(x,y) ((x)>(y)?(x):(y))
52
53 /* this MUST be >= 588 so that sector aligning can take place with one read */
54 #define CHUNK_OF_SAMPLES 2048
55
56 typedef struct {
57 #ifdef FLAC__HAS_OGG
58         FLAC__bool use_ogg;
59 #endif
60         FLAC__bool verify;
61         FLAC__bool verbose;
62         FLAC__bool is_stdout;
63         const char *inbasefilename;
64         const char *outfilename;
65
66         FLAC__uint64 skip;
67         FLAC__uint64 until; /* a value of 0 mean end-of-stream (i.e. --until=-0) */
68         FLAC__bool replay_gain;
69         unsigned channels;
70         unsigned bits_per_sample;
71         unsigned sample_rate;
72         FLAC__uint64 unencoded_size;
73         FLAC__uint64 total_samples_to_encode;
74         FLAC__uint64 bytes_written;
75         FLAC__uint64 samples_written;
76         unsigned blocksize;
77         unsigned stats_mask;
78
79         /*
80          * We use *.stream for encoding to stdout
81          * We use *.file for encoding to a regular file
82          */
83         union {
84                 union {
85                         FLAC__StreamEncoder *stream;
86                         FLAC__FileEncoder *file;
87                 } flac;
88 #ifdef FLAC__HAS_OGG
89                 union {
90                         OggFLAC__StreamEncoder *stream;
91                         OggFLAC__FileEncoder *file;
92                 } ogg;
93 #endif
94         } encoder;
95
96         FILE *fin;
97         FILE *fout;
98         FLAC__StreamMetadata *seek_table_template;
99 } EncoderSession;
100
101
102 static FLAC__bool is_big_endian_host_;
103
104 static unsigned char ucbuffer_[CHUNK_OF_SAMPLES*FLAC__MAX_CHANNELS*((FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE+7)/8)];
105 static signed char *scbuffer_ = (signed char *)ucbuffer_;
106 static FLAC__uint16 *usbuffer_ = (FLAC__uint16 *)ucbuffer_;
107 static FLAC__int16 *ssbuffer_ = (FLAC__int16 *)ucbuffer_;
108
109 static FLAC__int32 in_[FLAC__MAX_CHANNELS][CHUNK_OF_SAMPLES];
110 static FLAC__int32 *input_[FLAC__MAX_CHANNELS];
111
112
113 /*
114  * unpublished debug routines from the FLAC libs
115  */
116 extern FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
117 extern FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
118 extern FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
119 extern FLAC__bool FLAC__file_encoder_disable_constant_subframes(FLAC__FileEncoder *encoder, FLAC__bool value);
120 extern FLAC__bool FLAC__file_encoder_disable_fixed_subframes(FLAC__FileEncoder *encoder, FLAC__bool value);
121 extern FLAC__bool FLAC__file_encoder_disable_verbatim_subframes(FLAC__FileEncoder *encoder, FLAC__bool value);
122 #ifdef FLAC__HAS_OGG
123 extern FLAC__bool OggFLAC__stream_encoder_disable_constant_subframes(OggFLAC__StreamEncoder *encoder, FLAC__bool value);
124 extern FLAC__bool OggFLAC__stream_encoder_disable_fixed_subframes(OggFLAC__StreamEncoder *encoder, FLAC__bool value);
125 extern FLAC__bool OggFLAC__stream_encoder_disable_verbatim_subframes(OggFLAC__StreamEncoder *encoder, FLAC__bool value);
126 extern FLAC__bool OggFLAC__file_encoder_disable_constant_subframes(OggFLAC__FileEncoder *encoder, FLAC__bool value);
127 extern FLAC__bool OggFLAC__file_encoder_disable_fixed_subframes(OggFLAC__FileEncoder *encoder, FLAC__bool value);
128 extern FLAC__bool OggFLAC__file_encoder_disable_verbatim_subframes(OggFLAC__FileEncoder *encoder, FLAC__bool value);
129 #endif
130
131 /*
132  * local routines
133  */
134 static FLAC__bool EncoderSession_construct(EncoderSession *e, FLAC__bool use_ogg, FLAC__bool verify, FLAC__bool verbose, FILE *infile, const char *infilename, const char *outfilename);
135 static void EncoderSession_destroy(EncoderSession *e);
136 static int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero);
137 static int EncoderSession_finish_error(EncoderSession *e);
138 static FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options, unsigned channels, unsigned bps, unsigned sample_rate);
139 static FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], unsigned samples);
140 static FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e);
141 static FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input);
142 static void format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps);
143 #ifdef FLAC__HAS_OGG
144 static FLAC__StreamEncoderWriteStatus ogg_stream_encoder_write_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
145 static void ogg_stream_encoder_metadata_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data);
146 static void ogg_file_encoder_progress_callback(const OggFLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data);
147 #endif
148 static FLAC__StreamEncoderWriteStatus flac_stream_encoder_write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
149 static void flac_stream_encoder_metadata_callback(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data);
150 static void flac_file_encoder_progress_callback(const FLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data);
151 static FLAC__bool parse_cuesheet_(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset);
152 static void print_stats(const EncoderSession *encoder_session);
153 static void print_error_with_state(const EncoderSession *e, const char *message);
154 static void print_verify_error(EncoderSession *e);
155 static FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn);
156 static FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
157 static FLAC__bool read_big_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn);
158 static FLAC__bool read_big_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
159 static FLAC__bool read_sane_extended(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
160
161 /*
162  * public routines
163  */
164 int
165 flac__encode_aif(FILE *infile, long infilesize, const char *infilename, const char *outfilename,
166         const FLAC__byte *lookahead, unsigned lookahead_length, wav_encode_options_t options)
167 {
168         EncoderSession encoder_session;
169         FLAC__uint16 x;
170         FLAC__uint32 xx;
171         unsigned int channels= 0U, bps= 0U, sample_rate= 0U, sample_frames= 0U;
172         FLAC__bool got_comm_chunk= false, got_ssnd_chunk= false;
173         int info_align_carry= -1, info_align_zero= -1;
174
175         (void)infilesize; /* silence compiler warning about unused parameter */
176         (void)lookahead; /* silence compiler warning about unused parameter */
177         (void)lookahead_length; /* silence compiler warning about unused parameter */
178
179         if(!
180                 EncoderSession_construct(
181                         &encoder_session,
182 #ifdef FLAC__HAS_OGG
183                         options.common.use_ogg,
184 #else
185                         /*use_ogg=*/false,
186 #endif
187                         options.common.verify,
188                         options.common.verbose,
189                         infile,
190                         infilename,
191                         outfilename
192                 )
193         )
194                 return 1;
195
196         /* lookahead[] already has "FORMxxxxAIFF", do sub-chunks */
197
198         while(1) {
199                 size_t c= 0U;
200                 char chunk_id[4];
201
202                 /* chunk identifier; really conservative about behavior of fread() and feof() */
203                 if(feof(infile) || ((c= fread(chunk_id, 1U, 4U, infile)), c==0U && feof(infile)))
204                         break;
205                 else if(c<4U || feof(infile)) {
206                         fprintf(stderr, "%s: ERROR: incomplete chunk identifier\n", encoder_session.inbasefilename);
207                         return EncoderSession_finish_error(&encoder_session);
208                 }
209
210                 if(got_comm_chunk==false && !strncmp(chunk_id, "COMM", 4)) { /* common chunk */
211                         unsigned long skip;
212
213                         /* COMM chunk size */
214                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
215                                 return EncoderSession_finish_error(&encoder_session);
216                         else if(xx<18U) {
217                                 fprintf(stderr, "%s: ERROR: non-standard 'COMM' chunk has length = %u\n", encoder_session.inbasefilename, (unsigned int)xx);
218                                 return EncoderSession_finish_error(&encoder_session);
219                         }
220                         else if(xx!=18U)
221                                 fprintf(stderr, "%s: WARNING: non-standard 'COMM' chunk has length = %u\n", encoder_session.inbasefilename, (unsigned int)xx);
222                         skip= (xx-18U)+(xx & 1U);
223
224                         /* number of channels */
225                         if(!read_big_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
226                                 return EncoderSession_finish_error(&encoder_session);
227                         else if(x==0U || x>FLAC__MAX_CHANNELS) {
228                                 fprintf(stderr, "%s: ERROR: unsupported number channels %u\n", encoder_session.inbasefilename, (unsigned int)x);
229                                 return EncoderSession_finish_error(&encoder_session);
230                         }
231                         else if(options.common.sector_align && x!=2U) {
232                                 fprintf(stderr, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)x);
233                                 return EncoderSession_finish_error(&encoder_session);
234                         }
235                         channels= x;
236
237                         /* number of sample frames */
238                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
239                                 return EncoderSession_finish_error(&encoder_session);
240                         sample_frames= xx;
241
242                         /* bits per sample */
243                         if(!read_big_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
244                                 return EncoderSession_finish_error(&encoder_session);
245                         else if(x!=8U && x!=16U && x!=24U) {
246                                 fprintf(stderr, "%s: ERROR: unsupported bits per sample %u\n", encoder_session.inbasefilename, (unsigned int)x);
247                                 return EncoderSession_finish_error(&encoder_session);
248                         }
249                         else if(options.common.sector_align && x!=16U) {
250                                 fprintf(stderr, "%s: ERROR: file has %u bits per sample, must be 16 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)x);
251                                 return EncoderSession_finish_error(&encoder_session);
252                         }
253                         bps= x;
254
255                         /* sample rate */
256                         if(!read_sane_extended(infile, &xx, false, encoder_session.inbasefilename))
257                                 return EncoderSession_finish_error(&encoder_session);
258                         else if(!FLAC__format_sample_rate_is_valid(xx)) {
259                                 fprintf(stderr, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, (unsigned int)xx);
260                                 return EncoderSession_finish_error(&encoder_session);
261                         }
262                         else if(options.common.sector_align && xx!=44100U) {
263                                 fprintf(stderr, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)xx);
264                                 return EncoderSession_finish_error(&encoder_session);
265                         }
266                         sample_rate= xx;
267
268                         /* skip any extra data in the COMM chunk */
269                         FLAC__ASSERT(skip<=LONG_MAX);
270                         while(skip>0U && fseek(infile, skip, SEEK_CUR)<0) {
271                                 unsigned int need= min(skip, sizeof ucbuffer_);
272                                 if(fread(ucbuffer_, 1U, need, infile)<need) {
273                                         fprintf(stderr, "%s: ERROR during read while skipping extra COMM data\n", encoder_session.inbasefilename);
274                                         return EncoderSession_finish_error(&encoder_session);
275                                 }
276                                 skip-= need;
277                         }
278
279                         /*
280                          * now that we know the sample rate, canonicalize the
281                          * --skip string to a number of samples:
282                          */
283                         flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, sample_rate);
284                         FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
285                         encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
286                         FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
287
288                         got_comm_chunk= true;
289                 }
290                 else if(got_ssnd_chunk==false && !strncmp(chunk_id, "SSND", 4)) { /* sound data chunk */
291                         unsigned int offset= 0U, block_size= 0U, align_remainder= 0U, data_bytes;
292                         size_t bytes_per_frame= channels*(bps>>3);
293                         FLAC__uint64 total_samples_in_input, trim = 0;
294                         FLAC__bool pad= false;
295
296                         if(got_comm_chunk==false) {
297                                 fprintf(stderr, "%s: ERROR: got 'SSND' chunk before 'COMM' chunk\n", encoder_session.inbasefilename);
298                                 return EncoderSession_finish_error(&encoder_session);
299                         }
300
301                         /* SSND chunk size */
302                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
303                                 return EncoderSession_finish_error(&encoder_session);
304                         else if(xx!=(sample_frames*bytes_per_frame + 8U)) {
305                                 fprintf(stderr, "%s: ERROR: SSND chunk size inconsistent with sample frame count\n", encoder_session.inbasefilename);
306                                 return EncoderSession_finish_error(&encoder_session);
307                         }
308                         data_bytes= xx;
309                         pad= (data_bytes & 1U) ? true : false;
310                         data_bytes-= 8U; /* discount the offset and block size fields */
311
312                         /* offset */
313                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
314                                 return EncoderSession_finish_error(&encoder_session);
315                         else if(xx!=0U) {
316                                 fprintf(stderr, "%s: ERROR: offset is %u; must be 0\n", encoder_session.inbasefilename, (unsigned int)xx);
317                                 return EncoderSession_finish_error(&encoder_session);
318                         }
319                         offset= xx;
320
321                         /* block size */
322                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
323                                 return EncoderSession_finish_error(&encoder_session);
324                         else if(xx!=0U) {
325                                 fprintf(stderr, "%s: ERROR: block size is %u; must be 0\n", encoder_session.inbasefilename, (unsigned int)xx);
326                                 return EncoderSession_finish_error(&encoder_session);
327                         }
328                         block_size= xx;
329
330                         /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
331                         FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
332                         total_samples_in_input = data_bytes / bytes_per_frame + *options.common.align_reservoir_samples;
333
334                         /*
335                          * now that we know the input size, canonicalize the
336                          * --until string to an absolute sample number:
337                          */
338                         if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, sample_rate, encoder_session.skip, total_samples_in_input))
339                                 return EncoderSession_finish_error(&encoder_session);
340                         encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
341                         FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
342
343                         if(encoder_session.skip>0U) {
344                                 FLAC__uint64 remaining= encoder_session.skip*bytes_per_frame;
345
346                                 /* do 1<<30 bytes at a time, since 1<<30 is a nice round number, and */
347                                 /* is guaranteed to be less than LONG_MAX */
348                                 while(remaining>0U)
349                                 {
350                                         unsigned long skip= (unsigned long)(remaining % (1U<<30));
351
352                                         FLAC__ASSERT(skip<=LONG_MAX);
353                                         while(skip>0 && fseek(infile, skip, SEEK_CUR)<0) {
354                                                 unsigned int need= min(skip, sizeof ucbuffer_);
355                                                 if(fread(ucbuffer_, 1U, need, infile)<need) {
356                                                         fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
357                                                         return EncoderSession_finish_error(&encoder_session);
358                                                 }
359                                                 skip-= need;
360                                         }
361
362                                         remaining-= skip;
363                                 }
364                         }
365
366                         data_bytes-= (unsigned int)encoder_session.skip*bytes_per_frame; /*@@@ WATCHOUT: 4GB limit */
367                         encoder_session.total_samples_to_encode= total_samples_in_input - encoder_session.skip;
368                         if(encoder_session.until > 0) {
369                                 trim = total_samples_in_input - encoder_session.until;
370                                 FLAC__ASSERT(total_samples_in_input > 0);
371                                 FLAC__ASSERT(!options.common.sector_align);
372                                 data_bytes-= (unsigned int)trim*bytes_per_frame;
373                                 encoder_session.total_samples_to_encode-= trim;
374                         }
375                         if(options.common.sector_align) {
376                                 align_remainder= (unsigned int)(encoder_session.total_samples_to_encode % 588U);
377                                 if(options.common.is_last_file)
378                                         encoder_session.total_samples_to_encode+= (588U-align_remainder); /* will pad with zeroes */
379                                 else
380                                         encoder_session.total_samples_to_encode-= align_remainder; /* will stop short and carry over to next file */
381                         }
382
383                         /* +54 for the size of the AIFF headers; this is just an estimate for the progress indicator and doesn't need to be exact */
384                         encoder_session.unencoded_size= encoder_session.total_samples_to_encode*bytes_per_frame+54;
385
386                         if(!EncoderSession_init_encoder(&encoder_session, options.common, channels, bps, sample_rate))
387                                 return EncoderSession_finish_error(&encoder_session);
388
389                         /* first do any samples in the reservoir */
390                         if(options.common.sector_align && *options.common.align_reservoir_samples>0U) {
391
392                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
393                                         print_error_with_state(&encoder_session, "ERROR during encoding");
394                                         return EncoderSession_finish_error(&encoder_session);
395                                 }
396                         }
397
398                         /* decrement the data_bytes counter if we need to align the file */
399                         if(options.common.sector_align) {
400                                 if(options.common.is_last_file)
401                                         *options.common.align_reservoir_samples= 0U;
402                                 else {
403                                         *options.common.align_reservoir_samples= align_remainder;
404                                         data_bytes-= (*options.common.align_reservoir_samples)*bytes_per_frame;
405                                 }
406                         }
407
408                         /* now do from the file */
409                         while(data_bytes>0) {
410                                 size_t bytes_read= fread(ucbuffer_, 1U, min(data_bytes, CHUNK_OF_SAMPLES*bytes_per_frame), infile);
411
412                                 if(bytes_read==0U) {
413                                         if(ferror(infile)) {
414                                                 fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
415                                                 return EncoderSession_finish_error(&encoder_session);
416                                         }
417                                         else if(feof(infile)) {
418                                                 fprintf(stderr, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned int)encoder_session.total_samples_to_encode, (unsigned int)encoder_session.samples_written);
419                                                 data_bytes= 0;
420                                         }
421                                 }
422                                 else {
423                                         if(bytes_read % bytes_per_frame != 0U) {
424                                                 fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
425                                                 return EncoderSession_finish_error(&encoder_session);
426                                         }
427                                         else {
428                                                 unsigned int frames= bytes_read/bytes_per_frame;
429                                                 format_input(input_, frames, true, false, channels, bps);
430
431                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, frames)) {
432                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
433                                                         return EncoderSession_finish_error(&encoder_session);
434                                                 }
435                                                 else
436                                                         data_bytes-= bytes_read;
437                                         }
438                                 }
439                         }
440
441                         if(trim>0) {
442                                 FLAC__uint64 remaining= (unsigned int)trim*bytes_per_frame;
443
444                                 FLAC__ASSERT(!options.common.sector_align);
445
446                                 /* do 1<<30 bytes at a time, since 1<<30 is a nice round number, and */
447                                 /* is guaranteed to be less than LONG_MAX */
448                                 while(remaining>0U)
449                                 {
450                                         unsigned long skip= (unsigned long)(remaining % (1U<<30));
451
452                                         FLAC__ASSERT(skip<=LONG_MAX);
453                                         while(skip>0 && fseek(infile, skip, SEEK_CUR)<0) {
454                                                 unsigned int need= min(skip, sizeof ucbuffer_);
455                                                 if(fread(ucbuffer_, 1U, need, infile)<need) {
456                                                         fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
457                                                         return EncoderSession_finish_error(&encoder_session);
458                                                 }
459                                                 skip-= need;
460                                         }
461
462                                         remaining-= skip;
463                                 }
464                         }
465
466                         /* now read unaligned samples into reservoir or pad with zeroes if necessary */
467                         if(options.common.sector_align) {
468                                 if(options.common.is_last_file) {
469                                         unsigned int pad_frames= 588U-align_remainder;
470
471                                         if(pad_frames<588U) {
472                                                 unsigned int i;
473
474                                                 info_align_zero= pad_frames;
475                                                 for(i= 0U; i<channels; ++i)
476                                                         memset(input_[i], 0, pad_frames*(bps>>3));
477
478                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, pad_frames)) {
479                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
480                                                         return EncoderSession_finish_error(&encoder_session);
481                                                 }
482                                         }
483                                 }
484                                 else {
485                                         if(*options.common.align_reservoir_samples > 0) {
486                                                 size_t bytes_read= fread(ucbuffer_, 1U, (*options.common.align_reservoir_samples)*bytes_per_frame, infile);
487
488                                                 FLAC__ASSERT(CHUNK_OF_SAMPLES>=588U);
489                                                 if(bytes_read==0U && ferror(infile)) {
490                                                         fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
491                                                         return EncoderSession_finish_error(&encoder_session);
492                                                 }
493                                                 else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_frame)
494                                                         fprintf(stderr, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned int)bytes_read, (unsigned int)encoder_session.total_samples_to_encode, (unsigned int)encoder_session.samples_written);
495                                                 else {
496                                                         info_align_carry= *options.common.align_reservoir_samples;
497                                                         format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, true, false, channels, bps);
498                                                 }
499                                         }
500                                 }
501                         }
502
503                         if(pad==true) {
504                                 unsigned char tmp;
505
506                                 if(fread(&tmp, 1U, 1U, infile)<1U) {
507                                         fprintf(stderr, "%s: ERROR during read of SSND pad byte\n", encoder_session.inbasefilename);
508                                         return EncoderSession_finish_error(&encoder_session);
509                                 }
510                         }
511
512                         got_ssnd_chunk= true;
513                 }
514                 else { /* other chunk */
515                         if(!strncmp(chunk_id, "COMM", 4))
516                                 fprintf(stderr, "%s: WARNING: skipping extra 'COMM' chunk\n", encoder_session.inbasefilename);
517                         else if(!strncmp(chunk_id, "SSND", 4))
518                                 fprintf(stderr, "%s: WARNING: skipping extra 'SSND' chunk\n", encoder_session.inbasefilename);
519                         else
520                                 fprintf(stderr, "%s: WARNING: skipping unknown chunk '%s'\n", encoder_session.inbasefilename, chunk_id);
521
522                         /* chunk size */
523                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
524                                 return EncoderSession_finish_error(&encoder_session);
525                         else {
526                                 unsigned long skip= xx+(xx & 1U);
527
528                                 FLAC__ASSERT(skip<=LONG_MAX);
529                                 while(skip>0U && fseek(infile, skip, SEEK_CUR)<0) {
530                                         unsigned int need= min(skip, sizeof ucbuffer_);
531                                         if(fread(ucbuffer_, 1U, need, infile)<need) {
532                                                 fprintf(stderr, "%s: ERROR during read while skipping unknown chunk\n", encoder_session.inbasefilename);
533                                                 return EncoderSession_finish_error(&encoder_session);
534                                         }
535                                         skip-= need;
536                                 }
537                         }
538                 }
539         }
540
541         if(got_ssnd_chunk==false && sample_frames!=0U) {
542                 fprintf(stderr, "%s: ERROR: missing SSND chunk\n", encoder_session.inbasefilename);
543                 return EncoderSession_finish_error(&encoder_session);
544         }
545
546         return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero);
547 }
548
549 int flac__encode_wav(FILE *infile, long infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, unsigned lookahead_length, wav_encode_options_t options)
550 {
551         EncoderSession encoder_session;
552         FLAC__bool is_unsigned_samples = false;
553         unsigned channels = 0, bps = 0, sample_rate = 0, data_bytes;
554         size_t bytes_per_wide_sample, bytes_read;
555         FLAC__uint16 x;
556         FLAC__uint32 xx;
557         FLAC__bool got_fmt_chunk = false, got_data_chunk = false;
558         unsigned align_remainder = 0;
559         int info_align_carry = -1, info_align_zero = -1;
560
561         (void)infilesize;
562         (void)lookahead;
563         (void)lookahead_length;
564
565         if(!
566                 EncoderSession_construct(
567                         &encoder_session,
568 #ifdef FLAC__HAS_OGG
569                         options.common.use_ogg,
570 #else
571                         /*use_ogg=*/false,
572 #endif
573                         options.common.verify,
574                         options.common.verbose,
575                         infile,
576                         infilename,
577                         outfilename
578                 )
579         )
580                 return 1;
581
582         /*
583          * lookahead[] already has "RIFFxxxxWAVE", do sub-chunks
584          */
585         while(!feof(infile)) {
586                 if(!read_little_endian_uint32(infile, &xx, true, encoder_session.inbasefilename))
587                         return EncoderSession_finish_error(&encoder_session);
588                 if(feof(infile))
589                         break;
590                 if(xx == 0x20746d66 && !got_fmt_chunk) { /* "fmt " */
591                         unsigned block_align;
592
593                         /* fmt sub-chunk size */
594                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
595                                 return EncoderSession_finish_error(&encoder_session);
596                         if(xx < 16) {
597                                 fprintf(stderr, "%s: ERROR: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_session.inbasefilename, (unsigned)xx);
598                                 return EncoderSession_finish_error(&encoder_session);
599                         }
600                         else if(xx != 16 && xx != 18) {
601                                 fprintf(stderr, "%s: WARNING: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_session.inbasefilename, (unsigned)xx);
602                         }
603                         data_bytes = xx;
604                         /* compression code */
605                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
606                                 return EncoderSession_finish_error(&encoder_session);
607                         if(x != 1) {
608                                 fprintf(stderr, "%s: ERROR: unsupported compression type %u\n", encoder_session.inbasefilename, (unsigned)x);
609                                 return EncoderSession_finish_error(&encoder_session);
610                         }
611                         /* number of channels */
612                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
613                                 return EncoderSession_finish_error(&encoder_session);
614                         if(x == 0 || x > FLAC__MAX_CHANNELS) {
615                                 fprintf(stderr, "%s: ERROR: unsupported number channels %u\n", encoder_session.inbasefilename, (unsigned)x);
616                                 return EncoderSession_finish_error(&encoder_session);
617                         }
618                         else if(options.common.sector_align && x != 2) {
619                                 fprintf(stderr, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, (unsigned)x);
620                                 return EncoderSession_finish_error(&encoder_session);
621                         }
622                         channels = x;
623                         /* sample rate */
624                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
625                                 return EncoderSession_finish_error(&encoder_session);
626                         if(!FLAC__format_sample_rate_is_valid(xx)) {
627                                 fprintf(stderr, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, (unsigned)xx);
628                                 return EncoderSession_finish_error(&encoder_session);
629                         }
630                         else if(options.common.sector_align && xx != 44100) {
631                                 fprintf(stderr, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, (unsigned)xx);
632                                 return EncoderSession_finish_error(&encoder_session);
633                         }
634                         sample_rate = xx;
635                         /* avg bytes per second (ignored) */
636                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
637                                 return EncoderSession_finish_error(&encoder_session);
638                         /* block align */
639                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
640                                 return EncoderSession_finish_error(&encoder_session);
641                         block_align = x;
642                         /* bits per sample */
643                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
644                                 return EncoderSession_finish_error(&encoder_session);
645                         if(x != 8 && x != 16 && x != 24) {
646                                 fprintf(stderr, "%s: ERROR: unsupported bits-per-sample %u\n", encoder_session.inbasefilename, (unsigned)x);
647                                 return EncoderSession_finish_error(&encoder_session);
648                         }
649                         else if(options.common.sector_align && x != 16) {
650                                 fprintf(stderr, "%s: ERROR: file has %u bits per sample, must be 16 for --sector-align\n", encoder_session.inbasefilename, (unsigned)x);
651                                 return EncoderSession_finish_error(&encoder_session);
652                         }
653                         bps = x;
654                         if(bps * channels != block_align * 8) {
655                                 fprintf(stderr, "%s: ERROR: unsupported block alignment (%u), for bits-per-sample=%u, channels=%u\n", encoder_session.inbasefilename, block_align, bps, channels);
656                                 return EncoderSession_finish_error(&encoder_session);
657                         }
658                         is_unsigned_samples = (x == 8);
659
660                         /* skip any extra data in the fmt sub-chunk */
661                         data_bytes -= 16;
662                         if(data_bytes > 0) {
663                                 unsigned left, need;
664                                 for(left = data_bytes; left > 0; ) {
665                                         need = min(left, CHUNK_OF_SAMPLES);
666                                         if(fread(ucbuffer_, 1U, need, infile) < need) {
667                                                 fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
668                                                 return EncoderSession_finish_error(&encoder_session);
669                                         }
670                                         left -= need;
671                                 }
672                         }
673
674                         /*
675                          * now that we know the sample rate, canonicalize the
676                          * --skip string to a number of samples:
677                          */
678                         flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, sample_rate);
679                         FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
680                         encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
681                         FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
682
683                         got_fmt_chunk = true;
684                 }
685                 else if(xx == 0x61746164 && !got_data_chunk && got_fmt_chunk) { /* "data" */
686                         FLAC__uint64 total_samples_in_input, trim = 0;
687
688                         /* data size */
689                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
690                                 return EncoderSession_finish_error(&encoder_session);
691                         data_bytes = xx;
692
693                         bytes_per_wide_sample = channels * (bps >> 3);
694
695                         /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
696                         FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
697                         total_samples_in_input = data_bytes / bytes_per_wide_sample + *options.common.align_reservoir_samples;
698
699                         /*
700                          * now that we know the input size, canonicalize the
701                          * --until string to an absolute sample number:
702                          */
703                         if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, sample_rate, encoder_session.skip, total_samples_in_input))
704                                 return EncoderSession_finish_error(&encoder_session);
705                         encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
706                         FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
707
708                         if(encoder_session.skip > 0) {
709                                 if(fseek(infile, bytes_per_wide_sample * (unsigned)encoder_session.skip, SEEK_CUR) < 0) {
710                                         /* can't seek input, read ahead manually... */
711                                         unsigned left, need;
712                                         for(left = (unsigned)encoder_session.skip; left > 0; ) { /*@@@ WATCHOUT: 4GB limit */
713                                                 need = min(left, CHUNK_OF_SAMPLES);
714                                                 if(fread(ucbuffer_, bytes_per_wide_sample, need, infile) < need) {
715                                                         fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
716                                                         return EncoderSession_finish_error(&encoder_session);
717                                                 }
718                                                 left -= need;
719                                         }
720                                 }
721                         }
722
723                         data_bytes -= (unsigned)encoder_session.skip * bytes_per_wide_sample; /*@@@ WATCHOUT: 4GB limit */
724                         encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
725                         if(encoder_session.until > 0) {
726                                 trim = total_samples_in_input - encoder_session.until;
727                                 FLAC__ASSERT(total_samples_in_input > 0);
728                                 FLAC__ASSERT(!options.common.sector_align);
729                                 data_bytes -= (unsigned int)trim * bytes_per_wide_sample;
730                                 encoder_session.total_samples_to_encode -= trim;
731                         }
732                         if(options.common.sector_align) {
733                                 align_remainder = (unsigned)(encoder_session.total_samples_to_encode % 588);
734                                 if(options.common.is_last_file)
735                                         encoder_session.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
736                                 else
737                                         encoder_session.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
738                         }
739
740                         /* +44 for the size of the WAV headers; this is just an estimate for the progress indicator and doesn't need to be exact */
741                         encoder_session.unencoded_size = encoder_session.total_samples_to_encode * bytes_per_wide_sample + 44;
742
743                         if(!EncoderSession_init_encoder(&encoder_session, options.common, channels, bps, sample_rate))
744                                 return EncoderSession_finish_error(&encoder_session);
745
746                         /*
747                          * first do any samples in the reservoir
748                          */
749                         if(options.common.sector_align && *options.common.align_reservoir_samples > 0) {
750                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
751                                         print_error_with_state(&encoder_session, "ERROR during encoding");
752                                         return EncoderSession_finish_error(&encoder_session);
753                                 }
754                         }
755
756                         /*
757                          * decrement the data_bytes counter if we need to align the file
758                          */
759                         if(options.common.sector_align) {
760                                 if(options.common.is_last_file) {
761                                         *options.common.align_reservoir_samples = 0;
762                                 }
763                                 else {
764                                         *options.common.align_reservoir_samples = align_remainder;
765                                         data_bytes -= (*options.common.align_reservoir_samples) * bytes_per_wide_sample;
766                                 }
767                         }
768
769                         /*
770                          * now do from the file
771                          */
772                         while(data_bytes > 0) {
773                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), min(data_bytes, CHUNK_OF_SAMPLES * bytes_per_wide_sample), infile);
774                                 if(bytes_read == 0) {
775                                         if(ferror(infile)) {
776                                                 fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
777                                                 return EncoderSession_finish_error(&encoder_session);
778                                         }
779                                         else if(feof(infile)) {
780                                                 fprintf(stderr, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
781                                                 data_bytes = 0;
782                                         }
783                                 }
784                                 else {
785                                         if(bytes_read % bytes_per_wide_sample != 0) {
786                                                 fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
787                                                 return EncoderSession_finish_error(&encoder_session);
788                                         }
789                                         else {
790                                                 unsigned wide_samples = bytes_read / bytes_per_wide_sample;
791                                                 format_input(input_, wide_samples, false, is_unsigned_samples, channels, bps);
792
793                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
794                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
795                                                         return EncoderSession_finish_error(&encoder_session);
796                                                 }
797                                                 data_bytes -= bytes_read;
798                                         }
799                                 }
800                         }
801
802                         if(trim > 0) {
803                                 if(fseek(infile, bytes_per_wide_sample * (unsigned)trim, SEEK_CUR) < 0) {
804                                         /* can't seek input, read ahead manually... */
805                                         unsigned left, need;
806                                         for(left = (unsigned)trim; left > 0; ) { /*@@@ WATCHOUT: 4GB limit */
807                                                 need = min(left, CHUNK_OF_SAMPLES);
808                                                 if(fread(ucbuffer_, bytes_per_wide_sample, need, infile) < need) {
809                                                         fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
810                                                         return EncoderSession_finish_error(&encoder_session);
811                                                 }
812                                                 left -= need;
813                                         }
814                                 }
815                         }
816
817                         /*
818                          * now read unaligned samples into reservoir or pad with zeroes if necessary
819                          */
820                         if(options.common.sector_align) {
821                                 if(options.common.is_last_file) {
822                                         unsigned wide_samples = 588 - align_remainder;
823                                         if(wide_samples < 588) {
824                                                 unsigned channel;
825
826                                                 info_align_zero = wide_samples;
827                                                 data_bytes = wide_samples * (bps >> 3);
828                                                 for(channel = 0; channel < channels; channel++)
829                                                         memset(input_[channel], 0, data_bytes);
830
831                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
832                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
833                                                         return EncoderSession_finish_error(&encoder_session);
834                                                 }
835                                         }
836                                 }
837                                 else {
838                                         if(*options.common.align_reservoir_samples > 0) {
839                                                 FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
840                                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), (*options.common.align_reservoir_samples) * bytes_per_wide_sample, infile);
841                                                 if(bytes_read == 0 && ferror(infile)) {
842                                                         fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
843                                                         return EncoderSession_finish_error(&encoder_session);
844                                                 }
845                                                 else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_wide_sample) {
846                                                         fprintf(stderr, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)bytes_read, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
847                                                         data_bytes = 0;
848                                                 }
849                                                 else {
850                                                         info_align_carry = *options.common.align_reservoir_samples;
851                                                         format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, false, is_unsigned_samples, channels, bps);
852                                                 }
853                                         }
854                                 }
855                         }
856
857                         got_data_chunk = true;
858                 }
859                 else {
860                         if(xx == 0x20746d66 && got_fmt_chunk) { /* "fmt " */
861                                 fprintf(stderr, "%s: WARNING: skipping extra 'fmt ' sub-chunk\n", encoder_session.inbasefilename);
862                         }
863                         else if(xx == 0x61746164) { /* "data" */
864                                 if(got_data_chunk) {
865                                         fprintf(stderr, "%s: WARNING: skipping extra 'data' sub-chunk\n", encoder_session.inbasefilename);
866                                 }
867                                 else if(!got_fmt_chunk) {
868                                         fprintf(stderr, "%s: ERROR: got 'data' sub-chunk before 'fmt' sub-chunk\n", encoder_session.inbasefilename);
869                                         return EncoderSession_finish_error(&encoder_session);
870                                 }
871                                 else {
872                                         FLAC__ASSERT(0);
873                                 }
874                         }
875                         else {
876                                 fprintf(stderr, "%s: WARNING: skipping unknown sub-chunk '%c%c%c%c'\n", encoder_session.inbasefilename, (char)(xx&255), (char)((xx>>8)&255), (char)((xx>>16)&255), (char)(xx>>24));
877                         }
878                         /* sub-chunk size */
879                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
880                                 return EncoderSession_finish_error(&encoder_session);
881                         if(fseek(infile, xx, SEEK_CUR) < 0) {
882                                 /* can't seek input, read ahead manually... */
883                                 unsigned left, need;
884                                 const unsigned chunk = sizeof(ucbuffer_);
885                                 for(left = xx; left > 0; ) {
886                                         need = min(left, chunk);
887                                         if(fread(ucbuffer_, 1, need, infile) < need) {
888                                                 fprintf(stderr, "%s: ERROR during read while skipping unsupported sub-chunk\n", encoder_session.inbasefilename);
889                                                 return EncoderSession_finish_error(&encoder_session);
890                                         }
891                                         left -= need;
892                                 }
893                         }
894                 }
895         }
896
897         return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero);
898 }
899
900 int flac__encode_raw(FILE *infile, long infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, unsigned lookahead_length, raw_encode_options_t options)
901 {
902         EncoderSession encoder_session;
903         size_t bytes_read;
904         const size_t bytes_per_wide_sample = options.channels * (options.bps >> 3);
905         unsigned align_remainder = 0;
906         int info_align_carry = -1, info_align_zero = -1;
907         FLAC__uint64 total_samples_in_input = 0;;
908
909         FLAC__ASSERT(!options.common.sector_align || options.channels == 2);
910         FLAC__ASSERT(!options.common.sector_align || options.bps == 16);
911         FLAC__ASSERT(!options.common.sector_align || options.sample_rate == 44100);
912         FLAC__ASSERT(!options.common.sector_align || infilesize >= 0);
913         FLAC__ASSERT(!options.common.replay_gain || options.channels <= 2);
914         FLAC__ASSERT(!options.common.replay_gain || grabbag__replaygain_is_valid_sample_frequency(options.sample_rate));
915
916         if(!
917                 EncoderSession_construct(
918                         &encoder_session,
919 #ifdef FLAC__HAS_OGG
920                         options.common.use_ogg,
921 #else
922                         /*use_ogg=*/false,
923 #endif
924                         options.common.verify,
925                         options.common.verbose,
926                         infile,
927                         infilename,
928                         outfilename
929                 )
930         )
931                 return 1;
932
933         /*
934          * now that we know the sample rate, canonicalize the
935          * --skip string to a number of samples:
936          */
937         flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, options.sample_rate);
938         FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
939         encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
940         FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
941
942         if(infilesize < 0)
943                 total_samples_in_input = 0;
944         else {
945                 /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
946                 FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
947                 total_samples_in_input = (unsigned)infilesize / bytes_per_wide_sample + *options.common.align_reservoir_samples;
948         }
949
950         /*
951          * now that we know the input size, canonicalize the
952          * --until strings to a number of samples:
953          */
954         if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, options.sample_rate, encoder_session.skip, total_samples_in_input))
955                 return EncoderSession_finish_error(&encoder_session);
956         encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
957         FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
958
959         encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
960         if(encoder_session.until > 0) {
961                 const FLAC__uint64 trim = total_samples_in_input - encoder_session.until;
962                 FLAC__ASSERT(total_samples_in_input > 0);
963                 FLAC__ASSERT(!options.common.sector_align);
964                 encoder_session.total_samples_to_encode -= trim;
965         }
966         if(infilesize >= 0 && options.common.sector_align) {
967                 FLAC__ASSERT(encoder_session.skip == 0);
968                 align_remainder = (unsigned)(encoder_session.total_samples_to_encode % 588);
969                 if(options.common.is_last_file)
970                         encoder_session.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
971                 else
972                         encoder_session.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
973         }
974         encoder_session.unencoded_size = encoder_session.total_samples_to_encode * bytes_per_wide_sample;
975
976         if(encoder_session.verbose && encoder_session.total_samples_to_encode <= 0)
977                 fprintf(stderr, "(No runtime statistics possible; please wait for encoding to finish...)\n");
978
979         if(encoder_session.skip > 0) {
980                 unsigned skip_bytes = bytes_per_wide_sample * (unsigned)encoder_session.skip;
981                 if(skip_bytes > lookahead_length) {
982                         skip_bytes -= lookahead_length;
983                         lookahead_length = 0;
984                         if(fseek(infile, (long)skip_bytes, SEEK_CUR) < 0) {
985                                 /* can't seek input, read ahead manually... */
986                                 unsigned left, need;
987                                 const unsigned chunk = sizeof(ucbuffer_);
988                                 for(left = skip_bytes; left > 0; ) {
989                                         need = min(left, chunk);
990                                         if(fread(ucbuffer_, 1, need, infile) < need) {
991                                                 fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
992                                                 return EncoderSession_finish_error(&encoder_session);
993                                         }
994                                         left -= need;
995                                 }
996                         }
997                 }
998                 else {
999                         lookahead += skip_bytes;
1000                         lookahead_length -= skip_bytes;
1001                 }
1002         }
1003
1004         if(!EncoderSession_init_encoder(&encoder_session, options.common, options.channels, options.bps, options.sample_rate))
1005                 return EncoderSession_finish_error(&encoder_session);
1006
1007         /*
1008          * first do any samples in the reservoir
1009          */
1010         if(options.common.sector_align && *options.common.align_reservoir_samples > 0) {
1011                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
1012                         print_error_with_state(&encoder_session, "ERROR during encoding");
1013                         return EncoderSession_finish_error(&encoder_session);
1014                 }
1015         }
1016
1017         /*
1018          * decrement infilesize if we need to align the file
1019          */
1020         if(options.common.sector_align) {
1021                 FLAC__ASSERT(infilesize >= 0);
1022                 if(options.common.is_last_file) {
1023                         *options.common.align_reservoir_samples = 0;
1024                 }
1025                 else {
1026                         *options.common.align_reservoir_samples = align_remainder;
1027                         infilesize -= (long)((*options.common.align_reservoir_samples) * bytes_per_wide_sample);
1028                         FLAC__ASSERT(infilesize >= 0);
1029                 }
1030         }
1031
1032         /*
1033          * now do from the file
1034          */
1035         if(infilesize < 0) {
1036                 while(!feof(infile)) {
1037                         if(lookahead_length > 0) {
1038                                 FLAC__ASSERT(lookahead_length < CHUNK_OF_SAMPLES * bytes_per_wide_sample);
1039                                 memcpy(ucbuffer_, lookahead, lookahead_length);
1040                                 bytes_read = fread(ucbuffer_+lookahead_length, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample - lookahead_length, infile) + lookahead_length;
1041                                 if(ferror(infile)) {
1042                                         fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
1043                                         return EncoderSession_finish_error(&encoder_session);
1044                                 }
1045                                 lookahead_length = 0;
1046                         }
1047                         else
1048                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample, infile);
1049
1050                         if(bytes_read == 0) {
1051                                 if(ferror(infile)) {
1052                                         fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
1053                                         return EncoderSession_finish_error(&encoder_session);
1054                                 }
1055                         }
1056                         else if(bytes_read % bytes_per_wide_sample != 0) {
1057                                 fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
1058                                 return EncoderSession_finish_error(&encoder_session);
1059                         }
1060                         else {
1061                                 unsigned wide_samples = bytes_read / bytes_per_wide_sample;
1062                                 format_input(input_, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps);
1063
1064                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
1065                                         print_error_with_state(&encoder_session, "ERROR during encoding");
1066                                         return EncoderSession_finish_error(&encoder_session);
1067                                 }
1068                         }
1069                 }
1070         }
1071         else {
1072                 const FLAC__uint64 max_input_bytes = encoder_session.total_samples_to_encode * bytes_per_wide_sample;
1073                 FLAC__uint64 total_input_bytes_read = 0;
1074                 while(total_input_bytes_read < max_input_bytes) {
1075                         {
1076                                 size_t wanted = (CHUNK_OF_SAMPLES * bytes_per_wide_sample);
1077                                 wanted = min(wanted, (size_t)(max_input_bytes - total_input_bytes_read));
1078
1079                                 if(lookahead_length > 0) {
1080                                         FLAC__ASSERT(lookahead_length <= wanted);
1081                                         memcpy(ucbuffer_, lookahead, lookahead_length);
1082                                         wanted -= lookahead_length;
1083                                         bytes_read = lookahead_length;
1084                                         if(wanted > 0) {
1085                                                 bytes_read += fread(ucbuffer_+lookahead_length, sizeof(unsigned char), wanted, infile);
1086                                                 if(ferror(infile)) {
1087                                                         fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
1088                                                         return EncoderSession_finish_error(&encoder_session);
1089                                                 }
1090                                         }
1091                                         lookahead_length = 0;
1092                                 }
1093                                 else
1094                                         bytes_read = fread(ucbuffer_, sizeof(unsigned char), wanted, infile);
1095                         }
1096
1097                         if(bytes_read == 0) {
1098                                 if(ferror(infile)) {
1099                                         fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
1100                                         return EncoderSession_finish_error(&encoder_session);
1101                                 }
1102                                 else if(feof(infile)) {
1103                                         fprintf(stderr, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
1104                                         total_input_bytes_read = max_input_bytes;
1105                                 }
1106                         }
1107                         else {
1108                                 if(bytes_read % bytes_per_wide_sample != 0) {
1109                                         fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
1110                                         return EncoderSession_finish_error(&encoder_session);
1111                                 }
1112                                 else {
1113                                         unsigned wide_samples = bytes_read / bytes_per_wide_sample;
1114                                         format_input(input_, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps);
1115
1116                                         if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
1117                                                 print_error_with_state(&encoder_session, "ERROR during encoding");
1118                                                 return EncoderSession_finish_error(&encoder_session);
1119                                         }
1120                                         total_input_bytes_read += bytes_read;
1121                                 }
1122                         }
1123                 }
1124         }
1125
1126         /*
1127          * now read unaligned samples into reservoir or pad with zeroes if necessary
1128          */
1129         if(options.common.sector_align) {
1130                 if(options.common.is_last_file) {
1131                         unsigned wide_samples = 588 - align_remainder;
1132                         if(wide_samples < 588) {
1133                                 unsigned channel, data_bytes;
1134
1135                                 info_align_zero = wide_samples;
1136                                 data_bytes = wide_samples * (options.bps >> 3);
1137                                 for(channel = 0; channel < options.channels; channel++)
1138                                         memset(input_[channel], 0, data_bytes);
1139
1140                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
1141                                         print_error_with_state(&encoder_session, "ERROR during encoding");
1142                                         return EncoderSession_finish_error(&encoder_session);
1143                                 }
1144                         }
1145                 }
1146                 else {
1147                         if(*options.common.align_reservoir_samples > 0) {
1148                                 FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
1149                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), (*options.common.align_reservoir_samples) * bytes_per_wide_sample, infile);
1150                                 if(bytes_read == 0 && ferror(infile)) {
1151                                         fprintf(stderr, "%s: ERROR during read\n", encoder_session.inbasefilename);
1152                                         return EncoderSession_finish_error(&encoder_session);
1153                                 }
1154                                 else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_wide_sample) {
1155                                         fprintf(stderr, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)bytes_read, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
1156                                 }
1157                                 else {
1158                                         info_align_carry = *options.common.align_reservoir_samples;
1159                                         format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, false, options.is_unsigned_samples, options.channels, options.bps);
1160                                 }
1161                         }
1162                 }
1163         }
1164
1165         return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero);
1166 }
1167
1168 FLAC__bool EncoderSession_construct(EncoderSession *e, FLAC__bool use_ogg, FLAC__bool verify, FLAC__bool verbose, FILE *infile, const char *infilename, const char *outfilename)
1169 {
1170         unsigned i;
1171         FLAC__uint32 test = 1;
1172
1173         /*
1174          * initialize globals
1175          */
1176
1177         is_big_endian_host_ = (*((FLAC__byte*)(&test)))? false : true;
1178
1179         for(i = 0; i < FLAC__MAX_CHANNELS; i++)
1180                 input_[i] = &(in_[i][0]);
1181
1182
1183         /*
1184          * initialize instance
1185          */
1186
1187 #ifdef FLAC__HAS_OGG
1188         e->use_ogg = use_ogg;
1189 #else
1190         (void)use_ogg;
1191 #endif
1192         e->verify = verify;
1193         e->verbose = verbose;
1194
1195         e->is_stdout = (0 == strcmp(outfilename, "-"));
1196
1197         e->inbasefilename = grabbag__file_get_basename(infilename);
1198         e->outfilename = outfilename;
1199
1200         e->skip = 0; /* filled in later after the sample_rate is known */
1201         e->unencoded_size = 0;
1202         e->total_samples_to_encode = 0;
1203         e->bytes_written = 0;
1204         e->samples_written = 0;
1205         e->blocksize = 0;
1206         e->stats_mask = 0;
1207
1208         e->encoder.flac.stream = 0;
1209         e->encoder.flac.file = 0;
1210 #ifdef FLAC__HAS_OGG
1211         e->encoder.ogg.stream = 0;
1212         e->encoder.ogg.file = 0;
1213 #endif
1214
1215         e->fin = infile;
1216         e->fout = 0;
1217         e->seek_table_template = 0;
1218
1219         if(e->is_stdout) {
1220                 e->fout = grabbag__file_get_binary_stdout();
1221         }
1222
1223         if(0 == (e->seek_table_template = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE))) {
1224                 fprintf(stderr, "%s: ERROR allocating memory for seek table\n", e->inbasefilename);
1225                 return false;
1226         }
1227
1228 #ifdef FLAC__HAS_OGG
1229         if(e->use_ogg) {
1230                 if(e->is_stdout) {
1231                         e->encoder.ogg.stream = OggFLAC__stream_encoder_new();
1232                         if(0 == e->encoder.ogg.stream) {
1233                                 fprintf(stderr, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1234                                 EncoderSession_destroy(e);
1235                                 return false;
1236                         }
1237                 }
1238                 else {
1239                         e->encoder.ogg.file = OggFLAC__file_encoder_new();
1240                         if(0 == e->encoder.ogg.file) {
1241                                 fprintf(stderr, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1242                                 EncoderSession_destroy(e);
1243                                 return false;
1244                         }
1245                 }
1246         }
1247         else
1248 #endif
1249         if(e->is_stdout) {
1250                 e->encoder.flac.stream = FLAC__stream_encoder_new();
1251                 if(0 == e->encoder.flac.stream) {
1252                         fprintf(stderr, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1253                         EncoderSession_destroy(e);
1254                         return false;
1255                 }
1256         }
1257         else {
1258                 e->encoder.flac.file = FLAC__file_encoder_new();
1259                 if(0 == e->encoder.flac.file) {
1260                         fprintf(stderr, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1261                         EncoderSession_destroy(e);
1262                         return false;
1263                 }
1264         }
1265
1266         return true;
1267 }
1268
1269 void EncoderSession_destroy(EncoderSession *e)
1270 {
1271         if(e->fin != stdin)
1272                 fclose(e->fin);
1273         if(0 != e->fout && e->fout != stdout)
1274                 fclose(e->fout);
1275
1276 #ifdef FLAC__HAS_OGG
1277         if(e->use_ogg) {
1278                 if(e->is_stdout) {
1279                         if(0 != e->encoder.ogg.stream) {
1280                                 OggFLAC__stream_encoder_delete(e->encoder.ogg.stream);
1281                                 e->encoder.ogg.stream = 0;
1282                         }
1283                 }
1284                 else {
1285                         if(0 != e->encoder.ogg.file) {
1286                                 OggFLAC__file_encoder_delete(e->encoder.ogg.file);
1287                                 e->encoder.ogg.file = 0;
1288                         }
1289                 }
1290         }
1291         else
1292 #endif
1293         if(e->is_stdout) {
1294                 if(0 != e->encoder.flac.stream) {
1295                         FLAC__stream_encoder_delete(e->encoder.flac.stream);
1296                         e->encoder.flac.stream = 0;
1297                 }
1298         }
1299         else {
1300                 if(0 != e->encoder.flac.file) {
1301                         FLAC__file_encoder_delete(e->encoder.flac.file);
1302                         e->encoder.flac.file = 0;
1303                 }
1304         }
1305
1306         if(0 != e->seek_table_template) {
1307                 FLAC__metadata_object_delete(e->seek_table_template);
1308                 e->seek_table_template = 0;
1309         }
1310 }
1311
1312 int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero)
1313 {
1314         FLAC__StreamEncoderState fse_state = FLAC__STREAM_ENCODER_OK;
1315         int ret = 0;
1316
1317 #ifdef FLAC__HAS_OGG
1318         if(e->use_ogg) {
1319                 if(e->is_stdout) {
1320                         if(e->encoder.ogg.stream) {
1321                                 fse_state = OggFLAC__stream_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.stream);
1322                                 OggFLAC__stream_encoder_finish(e->encoder.ogg.stream);
1323                         }
1324                 }
1325                 else {
1326                         if(e->encoder.ogg.file) {
1327                                 fse_state = OggFLAC__file_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.file);
1328                                 OggFLAC__file_encoder_finish(e->encoder.ogg.file);
1329                         }
1330                 }
1331         }
1332         else
1333 #endif
1334         if(e->is_stdout) {
1335                 if(e->encoder.flac.stream) {
1336                         fse_state = FLAC__stream_encoder_get_state(e->encoder.flac.stream);
1337                         FLAC__stream_encoder_finish(e->encoder.flac.stream);
1338                 }
1339         }
1340         else {
1341                 if(e->encoder.flac.file) {
1342                         fse_state = FLAC__file_encoder_get_stream_encoder_state(e->encoder.flac.file);
1343                         FLAC__file_encoder_finish(e->encoder.flac.file);
1344                 }
1345         }
1346
1347         if(e->verbose && e->total_samples_to_encode > 0) {
1348                 print_stats(e);
1349                 fprintf(stderr, "\n");
1350         }
1351
1352         if(fse_state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA) {
1353                 print_verify_error(e);
1354                 ret = 1;
1355         }
1356         else {
1357                 if(info_align_carry >= 0)
1358                         fprintf(stderr, "%s: INFO: sector alignment causing %d samples to be carried over\n", e->inbasefilename, info_align_carry);
1359                 if(info_align_zero >= 0)
1360                         fprintf(stderr, "%s: INFO: sector alignment causing %d zero samples to be appended\n", e->inbasefilename, info_align_zero);
1361         }
1362
1363         EncoderSession_destroy(e);
1364
1365         return ret;
1366 }
1367
1368 int EncoderSession_finish_error(EncoderSession *e)
1369 {
1370         FLAC__StreamEncoderState fse_state;
1371
1372         if(e->verbose && e->total_samples_to_encode > 0)
1373                 fprintf(stderr, "\n");
1374
1375 #ifdef FLAC__HAS_OGG
1376         if(e->use_ogg) {
1377                 if(e->is_stdout) {
1378                         fse_state = OggFLAC__stream_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.stream);
1379                 }
1380                 else {
1381                         fse_state = OggFLAC__file_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.file);
1382                 }
1383         }
1384         else
1385 #endif
1386         if(e->is_stdout) {
1387                 fse_state = FLAC__stream_encoder_get_state(e->encoder.flac.stream);
1388         }
1389         else {
1390                 fse_state = FLAC__file_encoder_get_stream_encoder_state(e->encoder.flac.file);
1391         }
1392
1393         if(fse_state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
1394                 print_verify_error(e);
1395         else
1396                 unlink(e->outfilename);
1397
1398         EncoderSession_destroy(e);
1399
1400         return 1;
1401 }
1402
1403 FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options, unsigned channels, unsigned bps, unsigned sample_rate)
1404 {
1405         unsigned num_metadata;
1406         FLAC__StreamMetadata padding, *cuesheet = 0;
1407         FLAC__StreamMetadata *metadata[4];
1408         const FLAC__bool is_cdda = (channels == 1 || channels == 2) && (bps == 16) && (sample_rate == 44100);
1409
1410         e->replay_gain = options.replay_gain;
1411         e->channels = channels;
1412         e->bits_per_sample = bps;
1413         e->sample_rate = sample_rate;
1414
1415         if(e->replay_gain) {
1416                 if(channels != 1 && channels != 2) {
1417                         fprintf(stderr, "%s: ERROR, number of channels (%u) must be 1 or 2 for --replay-gain\n", e->inbasefilename, channels);
1418                         return false;
1419                 }
1420                 if(!grabbag__replaygain_is_valid_sample_frequency(sample_rate)) {
1421                         fprintf(stderr, "%s: ERROR, invalid sample rate (%u) for --replay-gain\n", e->inbasefilename, sample_rate);
1422                         return false;
1423                 }
1424                 if(options.is_first_file) {
1425                         if(!grabbag__replaygain_init(sample_rate)) {
1426                                 fprintf(stderr, "%s: ERROR initializing ReplayGain stage\n", e->inbasefilename);
1427                                 return false;
1428                         }
1429                 }
1430         }
1431
1432         if(channels != 2)
1433                 options.do_mid_side = options.loose_mid_side = false;
1434
1435         if(!parse_cuesheet_(&cuesheet, options.cuesheet_filename, e->inbasefilename, is_cdda, e->total_samples_to_encode))
1436                 return false;
1437
1438         if(!convert_to_seek_table_template(options.requested_seek_points, options.num_requested_seek_points, options.cued_seekpoints? cuesheet : 0, e)) {
1439                 fprintf(stderr, "%s: ERROR allocating memory for seek table\n", e->inbasefilename);
1440                 if(0 != cuesheet)
1441                         free(cuesheet);
1442                 return false;
1443         }
1444
1445         num_metadata = 0;
1446         if(e->seek_table_template->data.seek_table.num_points > 0) {
1447                 e->seek_table_template->is_last = false; /* the encoder will set this for us */
1448                 metadata[num_metadata++] = e->seek_table_template;
1449         }
1450         if(0 != cuesheet)
1451                 metadata[num_metadata++] = cuesheet;
1452         metadata[num_metadata++] = options.vorbis_comment;
1453         if(options.padding > 0) {
1454                 padding.is_last = false; /* the encoder will set this for us */
1455                 padding.type = FLAC__METADATA_TYPE_PADDING;
1456                 padding.length = (unsigned)options.padding;
1457                 metadata[num_metadata++] = &padding;
1458         }
1459
1460         e->blocksize = options.blocksize;
1461         e->stats_mask = (options.do_exhaustive_model_search || options.do_qlp_coeff_prec_search)? 0x0f : 0x3f;
1462
1463 #ifdef FLAC__HAS_OGG
1464         if(e->use_ogg) {
1465                 if(e->is_stdout) {
1466                         OggFLAC__stream_encoder_set_serial_number(e->encoder.ogg.stream, options.serial_number);
1467                         OggFLAC__stream_encoder_set_verify(e->encoder.ogg.stream, options.verify);
1468                         OggFLAC__stream_encoder_set_streamable_subset(e->encoder.ogg.stream, !options.lax);
1469                         OggFLAC__stream_encoder_set_do_mid_side_stereo(e->encoder.ogg.stream, options.do_mid_side);
1470                         OggFLAC__stream_encoder_set_loose_mid_side_stereo(e->encoder.ogg.stream, options.loose_mid_side);
1471                         OggFLAC__stream_encoder_set_channels(e->encoder.ogg.stream, channels);
1472                         OggFLAC__stream_encoder_set_bits_per_sample(e->encoder.ogg.stream, bps);
1473                         OggFLAC__stream_encoder_set_sample_rate(e->encoder.ogg.stream, sample_rate);
1474                         OggFLAC__stream_encoder_set_blocksize(e->encoder.ogg.stream, options.blocksize);
1475                         OggFLAC__stream_encoder_set_max_lpc_order(e->encoder.ogg.stream, options.max_lpc_order);
1476                         OggFLAC__stream_encoder_set_qlp_coeff_precision(e->encoder.ogg.stream, options.qlp_coeff_precision);
1477                         OggFLAC__stream_encoder_set_do_qlp_coeff_prec_search(e->encoder.ogg.stream, options.do_qlp_coeff_prec_search);
1478                         OggFLAC__stream_encoder_set_do_escape_coding(e->encoder.ogg.stream, options.do_escape_coding);
1479                         OggFLAC__stream_encoder_set_do_exhaustive_model_search(e->encoder.ogg.stream, options.do_exhaustive_model_search);
1480                         OggFLAC__stream_encoder_set_min_residual_partition_order(e->encoder.ogg.stream, options.min_residual_partition_order);
1481                         OggFLAC__stream_encoder_set_max_residual_partition_order(e->encoder.ogg.stream, options.max_residual_partition_order);
1482                         OggFLAC__stream_encoder_set_rice_parameter_search_dist(e->encoder.ogg.stream, options.rice_parameter_search_dist);
1483                         OggFLAC__stream_encoder_set_total_samples_estimate(e->encoder.ogg.stream, e->total_samples_to_encode);
1484                         OggFLAC__stream_encoder_set_metadata(e->encoder.ogg.stream, (num_metadata > 0)? metadata : 0, num_metadata);
1485                         OggFLAC__stream_encoder_set_write_callback(e->encoder.ogg.stream, ogg_stream_encoder_write_callback);
1486                         OggFLAC__stream_encoder_set_metadata_callback(e->encoder.ogg.stream, ogg_stream_encoder_metadata_callback);
1487                         OggFLAC__stream_encoder_set_client_data(e->encoder.ogg.stream, e);
1488
1489                         OggFLAC__stream_encoder_disable_constant_subframes(e->encoder.ogg.stream, options.debug.disable_constant_subframes);
1490                         OggFLAC__stream_encoder_disable_fixed_subframes(e->encoder.ogg.stream, options.debug.disable_fixed_subframes);
1491                         OggFLAC__stream_encoder_disable_verbatim_subframes(e->encoder.ogg.stream, options.debug.disable_verbatim_subframes);
1492
1493                         if(OggFLAC__stream_encoder_init(e->encoder.ogg.stream) != FLAC__STREAM_ENCODER_OK) {
1494                                 print_error_with_state(e, "ERROR initializing encoder");
1495                                 if(0 != cuesheet)
1496                                         free(cuesheet);
1497                                 return false;
1498                         }
1499                 }
1500                 else {
1501                         OggFLAC__file_encoder_set_serial_number(e->encoder.ogg.file, options.serial_number);
1502                         OggFLAC__file_encoder_set_filename(e->encoder.ogg.file, e->outfilename);
1503                         OggFLAC__file_encoder_set_verify(e->encoder.ogg.file, options.verify);
1504                         OggFLAC__file_encoder_set_streamable_subset(e->encoder.ogg.file, !options.lax);
1505                         OggFLAC__file_encoder_set_do_mid_side_stereo(e->encoder.ogg.file, options.do_mid_side);
1506                         OggFLAC__file_encoder_set_loose_mid_side_stereo(e->encoder.ogg.file, options.loose_mid_side);
1507                         OggFLAC__file_encoder_set_channels(e->encoder.ogg.file, channels);
1508                         OggFLAC__file_encoder_set_bits_per_sample(e->encoder.ogg.file, bps);
1509                         OggFLAC__file_encoder_set_sample_rate(e->encoder.ogg.file, sample_rate);
1510                         OggFLAC__file_encoder_set_blocksize(e->encoder.ogg.file, options.blocksize);
1511                         OggFLAC__file_encoder_set_max_lpc_order(e->encoder.ogg.file, options.max_lpc_order);
1512                         OggFLAC__file_encoder_set_qlp_coeff_precision(e->encoder.ogg.file, options.qlp_coeff_precision);
1513                         OggFLAC__file_encoder_set_do_qlp_coeff_prec_search(e->encoder.ogg.file, options.do_qlp_coeff_prec_search);
1514                         OggFLAC__file_encoder_set_do_escape_coding(e->encoder.ogg.file, options.do_escape_coding);
1515                         OggFLAC__file_encoder_set_do_exhaustive_model_search(e->encoder.ogg.file, options.do_exhaustive_model_search);
1516                         OggFLAC__file_encoder_set_min_residual_partition_order(e->encoder.ogg.file, options.min_residual_partition_order);
1517                         OggFLAC__file_encoder_set_max_residual_partition_order(e->encoder.ogg.file, options.max_residual_partition_order);
1518                         OggFLAC__file_encoder_set_rice_parameter_search_dist(e->encoder.ogg.file, options.rice_parameter_search_dist);
1519                         OggFLAC__file_encoder_set_total_samples_estimate(e->encoder.ogg.file, e->total_samples_to_encode);
1520                         OggFLAC__file_encoder_set_metadata(e->encoder.ogg.file, (num_metadata > 0)? metadata : 0, num_metadata);
1521                         OggFLAC__file_encoder_set_progress_callback(e->encoder.ogg.file, ogg_file_encoder_progress_callback);
1522                         OggFLAC__file_encoder_set_client_data(e->encoder.ogg.file, e);
1523
1524                         OggFLAC__file_encoder_disable_constant_subframes(e->encoder.ogg.file, options.debug.disable_constant_subframes);
1525                         OggFLAC__file_encoder_disable_fixed_subframes(e->encoder.ogg.file, options.debug.disable_fixed_subframes);
1526                         OggFLAC__file_encoder_disable_verbatim_subframes(e->encoder.ogg.file, options.debug.disable_verbatim_subframes);
1527
1528                         if(OggFLAC__file_encoder_init(e->encoder.ogg.file) != OggFLAC__FILE_ENCODER_OK) {
1529                                 print_error_with_state(e, "ERROR initializing encoder");
1530                                 if(0 != cuesheet)
1531                                         free(cuesheet);
1532                                 return false;
1533                         }
1534                 }
1535         }
1536         else
1537 #endif
1538         if(e->is_stdout) {
1539                 FLAC__stream_encoder_set_verify(e->encoder.flac.stream, options.verify);
1540                 FLAC__stream_encoder_set_streamable_subset(e->encoder.flac.stream, !options.lax);
1541                 FLAC__stream_encoder_set_do_mid_side_stereo(e->encoder.flac.stream, options.do_mid_side);
1542                 FLAC__stream_encoder_set_loose_mid_side_stereo(e->encoder.flac.stream, options.loose_mid_side);
1543                 FLAC__stream_encoder_set_channels(e->encoder.flac.stream, channels);
1544                 FLAC__stream_encoder_set_bits_per_sample(e->encoder.flac.stream, bps);
1545                 FLAC__stream_encoder_set_sample_rate(e->encoder.flac.stream, sample_rate);
1546                 FLAC__stream_encoder_set_blocksize(e->encoder.flac.stream, options.blocksize);
1547                 FLAC__stream_encoder_set_max_lpc_order(e->encoder.flac.stream, options.max_lpc_order);
1548                 FLAC__stream_encoder_set_qlp_coeff_precision(e->encoder.flac.stream, options.qlp_coeff_precision);
1549                 FLAC__stream_encoder_set_do_qlp_coeff_prec_search(e->encoder.flac.stream, options.do_qlp_coeff_prec_search);
1550                 FLAC__stream_encoder_set_do_escape_coding(e->encoder.flac.stream, options.do_escape_coding);
1551                 FLAC__stream_encoder_set_do_exhaustive_model_search(e->encoder.flac.stream, options.do_exhaustive_model_search);
1552                 FLAC__stream_encoder_set_min_residual_partition_order(e->encoder.flac.stream, options.min_residual_partition_order);
1553                 FLAC__stream_encoder_set_max_residual_partition_order(e->encoder.flac.stream, options.max_residual_partition_order);
1554                 FLAC__stream_encoder_set_rice_parameter_search_dist(e->encoder.flac.stream, options.rice_parameter_search_dist);
1555                 FLAC__stream_encoder_set_total_samples_estimate(e->encoder.flac.stream, e->total_samples_to_encode);
1556                 FLAC__stream_encoder_set_metadata(e->encoder.flac.stream, (num_metadata > 0)? metadata : 0, num_metadata);
1557                 FLAC__stream_encoder_set_write_callback(e->encoder.flac.stream, flac_stream_encoder_write_callback);
1558                 FLAC__stream_encoder_set_metadata_callback(e->encoder.flac.stream, flac_stream_encoder_metadata_callback);
1559                 FLAC__stream_encoder_set_client_data(e->encoder.flac.stream, e);
1560
1561                 FLAC__stream_encoder_disable_constant_subframes(e->encoder.flac.stream, options.debug.disable_constant_subframes);
1562                 FLAC__stream_encoder_disable_fixed_subframes(e->encoder.flac.stream, options.debug.disable_fixed_subframes);
1563                 FLAC__stream_encoder_disable_verbatim_subframes(e->encoder.flac.stream, options.debug.disable_verbatim_subframes);
1564
1565                 if(FLAC__stream_encoder_init(e->encoder.flac.stream) != FLAC__STREAM_ENCODER_OK) {
1566                         print_error_with_state(e, "ERROR initializing encoder");
1567                         if(0 != cuesheet)
1568                                 free(cuesheet);
1569                         return false;
1570                 }
1571         }
1572         else {
1573                 FLAC__file_encoder_set_filename(e->encoder.flac.file, e->outfilename);
1574                 FLAC__file_encoder_set_verify(e->encoder.flac.file, options.verify);
1575                 FLAC__file_encoder_set_streamable_subset(e->encoder.flac.file, !options.lax);
1576                 FLAC__file_encoder_set_do_mid_side_stereo(e->encoder.flac.file, options.do_mid_side);
1577                 FLAC__file_encoder_set_loose_mid_side_stereo(e->encoder.flac.file, options.loose_mid_side);
1578                 FLAC__file_encoder_set_channels(e->encoder.flac.file, channels);
1579                 FLAC__file_encoder_set_bits_per_sample(e->encoder.flac.file, bps);
1580                 FLAC__file_encoder_set_sample_rate(e->encoder.flac.file, sample_rate);
1581                 FLAC__file_encoder_set_blocksize(e->encoder.flac.file, options.blocksize);
1582                 FLAC__file_encoder_set_max_lpc_order(e->encoder.flac.file, options.max_lpc_order);
1583                 FLAC__file_encoder_set_qlp_coeff_precision(e->encoder.flac.file, options.qlp_coeff_precision);
1584                 FLAC__file_encoder_set_do_qlp_coeff_prec_search(e->encoder.flac.file, options.do_qlp_coeff_prec_search);
1585                 FLAC__file_encoder_set_do_escape_coding(e->encoder.flac.file, options.do_escape_coding);
1586                 FLAC__file_encoder_set_do_exhaustive_model_search(e->encoder.flac.file, options.do_exhaustive_model_search);
1587                 FLAC__file_encoder_set_min_residual_partition_order(e->encoder.flac.file, options.min_residual_partition_order);
1588                 FLAC__file_encoder_set_max_residual_partition_order(e->encoder.flac.file, options.max_residual_partition_order);
1589                 FLAC__file_encoder_set_rice_parameter_search_dist(e->encoder.flac.file, options.rice_parameter_search_dist);
1590                 FLAC__file_encoder_set_total_samples_estimate(e->encoder.flac.file, e->total_samples_to_encode);
1591                 FLAC__file_encoder_set_metadata(e->encoder.flac.file, (num_metadata > 0)? metadata : 0, num_metadata);
1592                 FLAC__file_encoder_set_progress_callback(e->encoder.flac.file, flac_file_encoder_progress_callback);
1593                 FLAC__file_encoder_set_client_data(e->encoder.flac.file, e);
1594
1595                 FLAC__file_encoder_disable_constant_subframes(e->encoder.flac.file, options.debug.disable_constant_subframes);
1596                 FLAC__file_encoder_disable_fixed_subframes(e->encoder.flac.file, options.debug.disable_fixed_subframes);
1597                 FLAC__file_encoder_disable_verbatim_subframes(e->encoder.flac.file, options.debug.disable_verbatim_subframes);
1598
1599                 if(FLAC__file_encoder_init(e->encoder.flac.file) != FLAC__FILE_ENCODER_OK) {
1600                         print_error_with_state(e, "ERROR initializing encoder");
1601                         if(0 != cuesheet)
1602                                 free(cuesheet);
1603                         return false;
1604                 }
1605         }
1606
1607         if(0 != cuesheet)
1608                 free(cuesheet);
1609
1610         return true;
1611 }
1612
1613 FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], unsigned samples)
1614 {
1615         if(e->replay_gain) {
1616                 if(!grabbag__replaygain_analyze(buffer, e->channels==2, e->bits_per_sample, samples))
1617                         fprintf(stderr, "%s: WARNING, error while calculating ReplayGain\n", e->inbasefilename);
1618         }
1619
1620 #ifdef FLAC__HAS_OGG
1621         if(e->use_ogg) {
1622                 if(e->is_stdout) {
1623                         return OggFLAC__stream_encoder_process(e->encoder.ogg.stream, buffer, samples);
1624                 }
1625                 else {
1626                         return OggFLAC__file_encoder_process(e->encoder.ogg.file, buffer, samples);
1627                 }
1628         }
1629         else
1630 #endif
1631         if(e->is_stdout) {
1632                 return FLAC__stream_encoder_process(e->encoder.flac.stream, buffer, samples);
1633         }
1634         else {
1635                 return FLAC__file_encoder_process(e->encoder.flac.file, buffer, samples);
1636         }
1637 }
1638
1639 FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e)
1640 {
1641         const FLAC__bool only_placeholders = e->is_stdout;
1642         FLAC__bool has_real_points;
1643
1644         if(num_requested_seek_points == 0 && 0 == cuesheet)
1645                 return true;
1646
1647         if(num_requested_seek_points < 0) {
1648                 requested_seek_points = "10s;";
1649                 num_requested_seek_points = 1;
1650         }
1651
1652         if(num_requested_seek_points > 0) {
1653                 if(!grabbag__seektable_convert_specification_to_template(requested_seek_points, only_placeholders, e->total_samples_to_encode, e->sample_rate, e->seek_table_template, &has_real_points))
1654                         return false;
1655         }
1656
1657         if(0 != cuesheet) {
1658                 unsigned i, j;
1659                 const FLAC__StreamMetadata_CueSheet *cs = &cuesheet->data.cue_sheet;
1660                 for(i = 0; i < cs->num_tracks; i++) {
1661                         const FLAC__StreamMetadata_CueSheet_Track *tr = cs->tracks+i;
1662                         for(j = 0; j < tr->num_indices; j++) {
1663                                 if(!FLAC__metadata_object_seektable_template_append_point(e->seek_table_template, tr->offset + tr->indices[j].offset))
1664                                         return false;
1665                                 has_real_points = true;
1666                         }
1667                 }
1668                 if(has_real_points)
1669                         if(!FLAC__metadata_object_seektable_template_sort(e->seek_table_template, /*compact=*/true))
1670                                 return false;
1671         }
1672
1673         if(has_real_points) {
1674                 if(e->is_stdout)
1675                         fprintf(stderr, "%s: WARNING, cannot write back seekpoints when encoding to stdout\n", e->inbasefilename);
1676         }
1677
1678         return true;
1679 }
1680
1681 FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input)
1682 {
1683         /* convert from mm:ss.sss to sample number if necessary */
1684         flac__utils_canonicalize_skip_until_specification(spec, sample_rate);
1685
1686         /* special case: if "--until=-0", use the special value '0' to mean "end-of-stream" */
1687         if(spec->is_relative && spec->value.samples == 0) {
1688                 spec->is_relative = false;
1689                 return true;
1690         }
1691
1692         /* in any other case the total samples in the input must be known */
1693         if(total_samples_in_input == 0) {
1694                 fprintf(stderr, "%s: ERROR, cannot use --until when input length is unknown\n", inbasefilename);
1695                 return false;
1696         }
1697
1698         FLAC__ASSERT(spec->value_is_samples);
1699
1700         /* convert relative specifications to absolute */
1701         if(spec->is_relative) {
1702                 if(spec->value.samples <= 0)
1703                         spec->value.samples += (FLAC__int64)total_samples_in_input;
1704                 else
1705                         spec->value.samples += skip;
1706                 spec->is_relative = false;
1707         }
1708
1709         /* error check */
1710         if(spec->value.samples < 0) {
1711                 fprintf(stderr, "%s: ERROR, --until value is before beginning of input\n", inbasefilename);
1712                 return false;
1713         }
1714         if((FLAC__uint64)spec->value.samples <= skip) {
1715                 fprintf(stderr, "%s: ERROR, --until value is before --skip point\n", inbasefilename);
1716                 return false;
1717         }
1718         if((FLAC__uint64)spec->value.samples > total_samples_in_input) {
1719                 fprintf(stderr, "%s: ERROR, --until value is after end of input\n", inbasefilename);
1720                 return false;
1721         }
1722
1723         return true;
1724 }
1725
1726 void format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps)
1727 {
1728         unsigned wide_sample, sample, channel, byte;
1729
1730         if(bps == 8) {
1731                 if(is_unsigned_samples) {
1732                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1733                                 for(channel = 0; channel < channels; channel++, sample++)
1734                                         dest[channel][wide_sample] = (FLAC__int32)ucbuffer_[sample] - 0x80;
1735                 }
1736                 else {
1737                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1738                                 for(channel = 0; channel < channels; channel++, sample++)
1739                                         dest[channel][wide_sample] = (FLAC__int32)scbuffer_[sample];
1740                 }
1741         }
1742         else if(bps == 16) {
1743                 if(is_big_endian != is_big_endian_host_) {
1744                         unsigned char tmp;
1745                         const unsigned bytes = wide_samples * channels * (bps >> 3);
1746                         for(byte = 0; byte < bytes; byte += 2) {
1747                                 tmp = ucbuffer_[byte];
1748                                 ucbuffer_[byte] = ucbuffer_[byte+1];
1749                                 ucbuffer_[byte+1] = tmp;
1750                         }
1751                 }
1752                 if(is_unsigned_samples) {
1753                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1754                                 for(channel = 0; channel < channels; channel++, sample++)
1755                                         dest[channel][wide_sample] = (FLAC__int32)usbuffer_[sample] - 0x8000;
1756                 }
1757                 else {
1758                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1759                                 for(channel = 0; channel < channels; channel++, sample++)
1760                                         dest[channel][wide_sample] = (FLAC__int32)ssbuffer_[sample];
1761                 }
1762         }
1763         else if(bps == 24) {
1764                 if(!is_big_endian) {
1765                         unsigned char tmp;
1766                         const unsigned bytes = wide_samples * channels * (bps >> 3);
1767                         for(byte = 0; byte < bytes; byte += 3) {
1768                                 tmp = ucbuffer_[byte];
1769                                 ucbuffer_[byte] = ucbuffer_[byte+2];
1770                                 ucbuffer_[byte+2] = tmp;
1771                         }
1772                 }
1773                 if(is_unsigned_samples) {
1774                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1775                                 for(channel = 0; channel < channels; channel++, sample++) {
1776                                         dest[channel][wide_sample]  = ucbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1777                                         dest[channel][wide_sample] |= ucbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1778                                         dest[channel][wide_sample] |= ucbuffer_[byte++];
1779                                         dest[channel][wide_sample] -= 0x800000;
1780                                 }
1781                 }
1782                 else {
1783                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1784                                 for(channel = 0; channel < channels; channel++, sample++) {
1785                                         dest[channel][wide_sample]  = scbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1786                                         dest[channel][wide_sample] |= ucbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1787                                         dest[channel][wide_sample] |= ucbuffer_[byte++];
1788                                 }
1789                 }
1790         }
1791         else {
1792                 FLAC__ASSERT(0);
1793         }
1794 }
1795
1796 #ifdef FLAC__HAS_OGG
1797 FLAC__StreamEncoderWriteStatus ogg_stream_encoder_write_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
1798 {
1799         EncoderSession *encoder_session = (EncoderSession*)client_data;
1800
1801         (void)encoder;
1802
1803         encoder_session->bytes_written += bytes;
1804         /*
1805          * With Ogg FLAC we don't get one write callback per frame and
1806          * we don't have a good number for 'samples', so we estimate based
1807          * on the frame number and the knowledge that all blocks (except
1808          * the last) are the same size.
1809          */
1810         (void)samples;
1811         encoder_session->samples_written = (current_frame+1) * encoder_session->blocksize;
1812
1813         if(encoder_session->verbose && encoder_session->total_samples_to_encode > 0 && !(current_frame & encoder_session->stats_mask))
1814                 print_stats(encoder_session);
1815
1816         if(flac__utils_fwrite(buffer, sizeof(FLAC__byte), bytes, encoder_session->fout) == bytes)
1817                 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
1818         else
1819                 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
1820 }
1821
1822 void ogg_stream_encoder_metadata_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
1823 {
1824         // do nothing, for compatibilty.  soon we will be using the ogg file encoder anyway.
1825         (void)encoder, (void)metadata, (void)client_data;
1826 }
1827
1828 void ogg_file_encoder_progress_callback(const OggFLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data)
1829 {
1830         EncoderSession *encoder_session = (EncoderSession*)client_data;
1831
1832         (void)encoder;
1833
1834         /*
1835          * With Ogg FLAC we don't get a value for 'samples_written', so we
1836          * estimate based on the frames written and the knowledge that all
1837          * blocks (except the last) are the same size.
1838          */
1839         samples_written = frames_written * encoder_session->blocksize;
1840         flac_file_encoder_progress_callback(0, bytes_written, samples_written, frames_written, total_frames_estimate, client_data);
1841 }
1842
1843 #endif
1844
1845 FLAC__StreamEncoderWriteStatus flac_stream_encoder_write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
1846 {
1847         EncoderSession *encoder_session = (EncoderSession*)client_data;
1848
1849         (void)encoder;
1850
1851         encoder_session->bytes_written += bytes;
1852         encoder_session->samples_written += samples;
1853
1854         if(samples && encoder_session->verbose && encoder_session->total_samples_to_encode > 0 && !(current_frame & encoder_session->stats_mask))
1855                 print_stats(encoder_session);
1856
1857         if(flac__utils_fwrite(buffer, sizeof(FLAC__byte), bytes, encoder_session->fout) == bytes)
1858                 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
1859         else
1860                 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
1861 }
1862
1863 void flac_stream_encoder_metadata_callback(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
1864 {
1865         /*
1866          * Nothing to do; if we get here, we're decoding to stdout, in
1867          * which case we can't seek backwards to write new metadata.
1868          */
1869         (void)encoder, (void)metadata, (void)client_data;
1870 }
1871
1872 void flac_file_encoder_progress_callback(const FLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data)
1873 {
1874         EncoderSession *encoder_session = (EncoderSession*)client_data;
1875
1876         (void)encoder, (void)total_frames_estimate;
1877
1878         encoder_session->bytes_written = bytes_written;
1879         encoder_session->samples_written = samples_written;
1880
1881         if(encoder_session->verbose && encoder_session->total_samples_to_encode > 0 && !((frames_written-1) & encoder_session->stats_mask))
1882                 print_stats(encoder_session);
1883 }
1884
1885 FLAC__bool parse_cuesheet_(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset)
1886 {
1887         FILE *f;
1888         unsigned last_line_read;
1889         const char *error_message;
1890
1891         if(0 == cuesheet_filename)
1892                 return true;
1893
1894         if(lead_out_offset == 0) {
1895                 fprintf(stderr, "%s: ERROR cannot import cuesheet when the number of input samples to encode is unknown\n", inbasefilename);
1896                 return false;
1897         }
1898
1899         if(0 == (f = fopen(cuesheet_filename, "r"))) {
1900                 fprintf(stderr, "%s: ERROR opening cuesheet \"%s\" for reading\n", inbasefilename, cuesheet_filename);
1901                 return false;
1902         }
1903
1904         *cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, is_cdda, lead_out_offset);
1905
1906         fclose(f);
1907
1908         if(0 == *cuesheet) {
1909                 fprintf(stderr, "%s: ERROR parsing cuesheet \"%s\" on line %u: %s\n", inbasefilename, cuesheet_filename, last_line_read, error_message);
1910                 return false;
1911         }
1912
1913         return true;
1914 }
1915
1916 void print_stats(const EncoderSession *encoder_session)
1917 {
1918         const FLAC__uint64 samples_written = min(encoder_session->total_samples_to_encode, encoder_session->samples_written);
1919 #if defined _MSC_VER || defined __MINGW32__
1920         /* with VC++ you have to spoon feed it the casting */
1921         const double progress = (double)(FLAC__int64)samples_written / (double)(FLAC__int64)encoder_session->total_samples_to_encode;
1922         const double ratio = (double)(FLAC__int64)encoder_session->bytes_written / ((double)(FLAC__int64)encoder_session->unencoded_size * progress);
1923 #else
1924         const double progress = (double)samples_written / (double)encoder_session->total_samples_to_encode;
1925         const double ratio = (double)encoder_session->bytes_written / ((double)encoder_session->unencoded_size * max(1.0, progress));
1926 #endif
1927
1928         if(samples_written == encoder_session->total_samples_to_encode) {
1929                 fprintf(stderr, "\r%s:%s wrote %u bytes, ratio=%0.3f",
1930                         encoder_session->inbasefilename,
1931                         encoder_session->verify? " Verify OK," : "",
1932                         (unsigned)encoder_session->bytes_written,
1933                         ratio
1934                 );
1935         }
1936         else {
1937                 fprintf(stderr, "\r%s: %u%% complete, ratio=%0.3f", encoder_session->inbasefilename, (unsigned)floor(progress * 100.0 + 0.5), ratio);
1938         }
1939 }
1940
1941 void print_error_with_state(const EncoderSession *e, const char *message)
1942 {
1943         const int ilen = strlen(e->inbasefilename) + 1;
1944         const char *state_string;
1945
1946         fprintf(stderr, "\n%s: %s\n", e->inbasefilename, message);
1947
1948 #ifdef FLAC__HAS_OGG
1949         if(e->use_ogg) {
1950                 if(e->is_stdout) {
1951                         state_string = OggFLAC__stream_encoder_get_resolved_state_string(e->encoder.ogg.stream);
1952                 }
1953                 else {
1954                         state_string = OggFLAC__file_encoder_get_resolved_state_string(e->encoder.ogg.file);
1955                 }
1956         }
1957         else
1958 #endif
1959         if(e->is_stdout) {
1960                 state_string = FLAC__stream_encoder_get_resolved_state_string(e->encoder.flac.stream);
1961         }
1962         else {
1963                 state_string = FLAC__file_encoder_get_resolved_state_string(e->encoder.flac.file);
1964         }
1965
1966         fprintf(stderr, "%*s state = %s\n", ilen, "", state_string);
1967 }
1968
1969 void print_verify_error(EncoderSession *e)
1970 {
1971         FLAC__uint64 absolute_sample;
1972         unsigned frame_number;
1973         unsigned channel;
1974         unsigned sample;
1975         FLAC__int32 expected;
1976         FLAC__int32 got;
1977
1978 #ifdef FLAC__HAS_OGG
1979         if(e->use_ogg) {
1980                 if(e->is_stdout) {
1981                         OggFLAC__stream_encoder_get_verify_decoder_error_stats(e->encoder.ogg.stream, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1982                 }
1983                 else {
1984                         OggFLAC__file_encoder_get_verify_decoder_error_stats(e->encoder.ogg.file, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1985                 }
1986         }
1987         else
1988 #endif
1989         if(e->is_stdout) {
1990                 FLAC__stream_encoder_get_verify_decoder_error_stats(e->encoder.flac.stream, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1991         }
1992         else {
1993                 FLAC__file_encoder_get_verify_decoder_error_stats(e->encoder.flac.file, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1994         }
1995
1996         fprintf(stderr, "%s: ERROR: mismatch in decoded data, verify FAILED!\n", e->inbasefilename);
1997         fprintf(stderr, "       Absolute sample=%u, frame=%u, channel=%u, sample=%u, expected %d, got %d\n", (unsigned)absolute_sample, frame_number, channel, sample, expected, got);
1998         fprintf(stderr, "       Please submit a bug report to\n");
1999         fprintf(stderr, "           http://sourceforge.net/bugs/?func=addbug&group_id=13478\n");
2000         fprintf(stderr, "       Make sure to include an email contact in the comment and/or use the\n");
2001         fprintf(stderr, "       \"Monitor\" feature to monitor the bug status.\n");
2002         fprintf(stderr, "Verify FAILED!  Do not trust %s\n", e->outfilename);
2003 }
2004
2005 FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
2006 {
2007         size_t bytes_read = fread(val, 1, 2, f);
2008
2009         if(bytes_read == 0) {
2010                 if(!eof_ok) {
2011                         fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
2012                         return false;
2013                 }
2014                 else
2015                         return true;
2016         }
2017         else if(bytes_read < 2) {
2018                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
2019                 return false;
2020         }
2021         else {
2022                 if(is_big_endian_host_) {
2023                         FLAC__byte tmp, *b = (FLAC__byte*)val;
2024                         tmp = b[1]; b[1] = b[0]; b[0] = tmp;
2025                 }
2026                 return true;
2027         }
2028 }
2029
2030 FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
2031 {
2032         size_t bytes_read = fread(val, 1, 4, f);
2033
2034         if(bytes_read == 0) {
2035                 if(!eof_ok) {
2036                         fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
2037                         return false;
2038                 }
2039                 else
2040                         return true;
2041         }
2042         else if(bytes_read < 4) {
2043                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
2044                 return false;
2045         }
2046         else {
2047                 if(is_big_endian_host_) {
2048                         FLAC__byte tmp, *b = (FLAC__byte*)val;
2049                         tmp = b[3]; b[3] = b[0]; b[0] = tmp;
2050                         tmp = b[2]; b[2] = b[1]; b[1] = tmp;
2051                 }
2052                 return true;
2053         }
2054 }
2055
2056 FLAC__bool
2057 read_big_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
2058 {
2059         unsigned char buf[4];
2060         size_t bytes_read= fread(buf, 1, 2, f);
2061
2062         if(bytes_read==0U && eof_ok)
2063                 return true;
2064         else if(bytes_read<2U) {
2065                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
2066                 return false;
2067         }
2068
2069         /* this is independent of host endianness */
2070         *val= (FLAC__uint16)(buf[0])<<8 | buf[1];
2071
2072         return true;
2073 }
2074
2075 FLAC__bool
2076 read_big_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
2077 {
2078         unsigned char buf[4];
2079         size_t bytes_read= fread(buf, 1, 4, f);
2080
2081         if(bytes_read==0U && eof_ok)
2082                 return true;
2083         else if(bytes_read<4U) {
2084                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
2085                 return false;
2086         }
2087
2088         /* this is independent of host endianness */
2089         *val= (FLAC__uint32)(buf[0])<<24 | (FLAC__uint32)(buf[1])<<16 |
2090                 (FLAC__uint32)(buf[2])<<8 | buf[3];
2091
2092         return true;
2093 }
2094
2095 FLAC__bool
2096 read_sane_extended(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
2097         /* Read an IEEE 754 80-bit (aka SANE) extended floating point value from 'f',
2098          * convert it into an integral value and store in 'val'.  Return false if only
2099          * between 1 and 9 bytes remain in 'f', if 0 bytes remain in 'f' and 'eof_ok' is
2100          * false, or if the value is negative, between zero and one, or too large to be
2101          * represented by 'val'; return true otherwise.
2102          */
2103 {
2104         unsigned int i;
2105         unsigned char buf[10];
2106         size_t bytes_read= fread(buf, 1U, 10U, f);
2107         FLAC__int16 e= ((FLAC__uint16)(buf[0])<<8 | (FLAC__uint16)(buf[1]))-0x3FFF;
2108         FLAC__int16 shift= 63-e;
2109         FLAC__uint64 p= 0U;
2110
2111         if(bytes_read==0U && eof_ok)
2112                 return true;
2113         else if(bytes_read<10U) {
2114                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
2115                 return false;
2116         }
2117         else if((buf[0]>>7)==1U || e<0 || e>63) {
2118                 fprintf(stderr, "%s: ERROR: invalid floating-point value\n", fn);
2119                 return false;
2120         }
2121
2122         for(i= 0U; i<8U; ++i)
2123                 p|= (FLAC__uint64)(buf[i+2])<<(56U-i*8);
2124         *val= (FLAC__uint32)((p>>shift)+(p>>(shift-1) & 0x1));
2125
2126         return true;
2127 }