src/flac/encode.c

   1 /* flac - Command-line FLAC encoder/decoder
   2  * Copyright (C) 2000,2001  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 <math.h> /* for floor() */
  26 #include <stdio.h> /* for FILE et al. */
  27 #include <stdlib.h> /* for malloc */
  28 #include <string.h> /* for strcmp() */
  29 #include "FLAC/all.h"
  30 #include "encode.h"
  31 #include "file.h"
  32 #ifdef FLAC__HAS_OGG
  33 #include "ogg/ogg.h"
  34 #endif
  35
  36 #ifdef min
  37 #undef min
  38 #endif
  39 #define min(x,y) ((x)<(y)?(x):(y))
  40
  41 /* this MUST be >= 588 so that sector aligning can take place with one read */
  42 #define CHUNK_OF_SAMPLES 2048
  43
  44 typedef enum {
  45         FLAC__VERIFY_OK,
  46         FLAC__VERIFY_FAILED_IN_FRAME,
  47         FLAC__VERIFY_FAILED_IN_METADATA
  48 } verify_code;
  49
  50 static const char *verify_code_string[] = {
  51         "FLAC__VERIFY_OK",
  52         "FLAC__VERIFY_FAILED_IN_FRAME",
  53         "FLAC__VERIFY_FAILED_IN_METADATA"
  54 };
  55
  56 typedef struct {
  57         FLAC__int32 *original[FLAC__MAX_CHANNELS];
  58         unsigned size; /* of each original[] in samples */
  59         unsigned tail; /* in wide samples */
  60         const FLAC__byte *encoded_signal;
  61         unsigned encoded_signal_capacity;
  62         unsigned encoded_bytes;
  63         FLAC__bool into_frames;
  64         verify_code result;
  65         FLAC__StreamDecoder *decoder;
  66 } verify_fifo_struct;
  67
  68 #ifdef FLAC__HAS_OGG
  69 typedef struct {
  70         ogg_stream_state os;
  71         ogg_page og;
  72 } ogg_info_struct;
  73 #endif
  74
  75 typedef struct {
  76         const char *inbasefilename;
  77         FILE *fout;
  78         const char *outfilename;
  79         FLAC__StreamEncoder *encoder;
  80         FLAC__bool verify;
  81         FLAC__bool verbose;
  82         FLAC__uint64 unencoded_size;
  83         FLAC__uint64 total_samples_to_encode;
  84         FLAC__uint64 bytes_written;
  85         FLAC__uint64 samples_written;
  86         FLAC__uint64 stream_offset; /* i.e. number of bytes before the first byte of the the first frame's header */
  87         unsigned current_frame;
  88         verify_fifo_struct verify_fifo;
  89         FLAC__StreamMetaData_SeekTable seek_table;
  90         unsigned first_seek_point_to_check;
  91         FLAC__bool use_ogg;
  92 #ifdef FLAC__HAS_OGG
  93         ogg_info_struct ogg;
  94 #endif
  95 } encoder_wrapper_struct;
  96
  97 static FLAC__bool is_big_endian_host;
  98
  99 static unsigned char ucbuffer[CHUNK_OF_SAMPLES*FLAC__MAX_CHANNELS*((FLAC__MAX_BITS_PER_SAMPLE+7)/8)];
 100 static signed char *scbuffer = (signed char *)ucbuffer;
 101 static FLAC__uint16 *usbuffer = (FLAC__uint16 *)ucbuffer;
 102 static FLAC__int16 *ssbuffer = (FLAC__int16 *)ucbuffer;
 103
 104 static FLAC__int32 in[FLAC__MAX_CHANNELS][CHUNK_OF_SAMPLES];
 105 static FLAC__int32 *input[FLAC__MAX_CHANNELS];
 106
 107 /* local routines */
 108 static FLAC__bool init(encoder_wrapper_struct *encoder_wrapper);
 109 static FLAC__bool init_encoder(encode_options_t options, unsigned channels, unsigned bps, unsigned sample_rate, encoder_wrapper_struct *encoder_wrapper);
 110 static FLAC__bool convert_to_seek_table(char *requested_seek_points, int num_requested_seek_points, FLAC__uint64 stream_samples, unsigned blocksize, FLAC__StreamMetaData_SeekTable *seek_table);
 111 static void append_point_to_seek_table(FLAC__StreamMetaData_SeekTable *seek_table, FLAC__uint64 sample, FLAC__uint64 stream_samples, FLAC__uint64 blocksize);
 112 static int seekpoint_compare(const FLAC__StreamMetaData_SeekPoint *l, const FLAC__StreamMetaData_SeekPoint *r);
 113 static void format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps, encoder_wrapper_struct *encoder_wrapper);
 114 static void append_to_verify_fifo(encoder_wrapper_struct *encoder_wrapper, const FLAC__int32 *input[], unsigned channels, unsigned wide_samples);
 115 static FLAC__StreamEncoderWriteStatus write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
 116 static void metadata_callback(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetaData *metadata, void *client_data);
 117 static FLAC__StreamDecoderReadStatus verify_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
 118 static FLAC__StreamDecoderWriteStatus verify_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data);
 119 static void verify_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data);
 120 static void verify_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
 121 static void print_stats(const encoder_wrapper_struct *encoder_wrapper);
 122 static FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn);
 123 static FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
 124 static FLAC__bool write_big_endian_uint16(FILE *f, FLAC__uint16 val);
 125 static FLAC__bool write_big_endian_uint64(FILE *f, FLAC__uint64 val);
 126
 127 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)
 128 {
 129         encoder_wrapper_struct encoder_wrapper;
 130         FLAC__bool is_unsigned_samples = false;
 131         unsigned channels = 0, bps = 0, sample_rate = 0, data_bytes;
 132         size_t bytes_per_wide_sample, bytes_read;
 133         FLAC__uint16 x;
 134         FLAC__uint32 xx;
 135         FLAC__bool got_fmt_chunk = false, got_data_chunk = false;
 136         unsigned align_remainder = 0;
 137         int info_align_carry = -1, info_align_zero = -1;
 138
 139         FLAC__ASSERT(!options.sector_align || options.common.skip == 0);
 140
 141         encoder_wrapper.encoder = 0;
 142         encoder_wrapper.verify = options.common.verify;
 143         encoder_wrapper.verbose = options.common.verbose;
 144         encoder_wrapper.bytes_written = 0;
 145         encoder_wrapper.samples_written = 0;
 146         encoder_wrapper.stream_offset = 0;
 147         encoder_wrapper.inbasefilename = flac__file_get_basename(infilename);
 148         encoder_wrapper.outfilename = outfilename;
 149         encoder_wrapper.seek_table.points = 0;
 150         encoder_wrapper.first_seek_point_to_check = 0;
 151 #ifdef FLAC__HAS_OGG
 152         encoder_wrapper.use_ogg = options.common.use_ogg;
 153 #endif
 154         (void)infilesize;
 155         (void)lookahead;
 156         (void)lookahead_length;
 157
 158         if(0 == strcmp(outfilename, "-")) {
 159                 encoder_wrapper.fout = stdout;
 160         }
 161         else {
 162                 if(0 == (encoder_wrapper.fout = fopen(outfilename, "wb"))) {
 163                         fprintf(stderr, "%s: ERROR: can't open output file %s\n", encoder_wrapper.inbasefilename, outfilename);
 164                         fclose(infile);
 165                         return 1;
 166                 }
 167         }
 168
 169         if(!init(&encoder_wrapper))
 170                 goto wav_abort_;
 171
 172         /*
 173          * lookahead[] already has "RIFFxxxxWAVE", do sub-chunks
 174          */
 175         while(!feof(infile)) {
 176                 if(!read_little_endian_uint32(infile, &xx, true, encoder_wrapper.inbasefilename))
 177                         goto wav_abort_;
 178                 if(feof(infile))
 179                         break;
 180                 if(xx == 0x20746d66) { /* "fmt " */
 181                         if(got_fmt_chunk) {
 182                                 fprintf(stderr, "%s: WARNING: skipping extra 'fmt ' sub-chunk\n", encoder_wrapper.inbasefilename);
 183                         }
 184                         else {
 185                                 /* fmt sub-chunk size */
 186                                 if(!read_little_endian_uint32(infile, &xx, false, encoder_wrapper.inbasefilename))
 187                                         goto wav_abort_;
 188                                 if(xx < 16) {
 189                                         fprintf(stderr, "%s: ERROR: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_wrapper.inbasefilename, (unsigned)xx);
 190                                         goto wav_abort_;
 191                                 }
 192                                 else if(xx != 16 && xx != 18) {
 193                                         fprintf(stderr, "%s: WARNING: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_wrapper.inbasefilename, (unsigned)xx);
 194                                 }
 195                                 data_bytes = xx;
 196                                 /* compression code */
 197                                 if(!read_little_endian_uint16(infile, &x, false, encoder_wrapper.inbasefilename))
 198                                         goto wav_abort_;
 199                                 if(x != 1) {
 200                                         fprintf(stderr, "%s: ERROR: unsupported compression type %u\n", encoder_wrapper.inbasefilename, (unsigned)x);
 201                                         goto wav_abort_;
 202                                 }
 203                                 /* number of channels */
 204                                 if(!read_little_endian_uint16(infile, &x, false, encoder_wrapper.inbasefilename))
 205                                         goto wav_abort_;
 206                                 if(x == 0 || x > FLAC__MAX_CHANNELS) {
 207                                         fprintf(stderr, "%s: ERROR: unsupported number channels %u\n", encoder_wrapper.inbasefilename, (unsigned)x);
 208                                         goto wav_abort_;
 209                                 }
 210                                 else if(options.sector_align && x != 2) {
 211                                         fprintf(stderr, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_wrapper.inbasefilename, (unsigned)x);
 212                                         goto wav_abort_;
 213                                 }
 214                                 channels = x;
 215                                 /* sample rate */
 216                                 if(!read_little_endian_uint32(infile, &xx, false, encoder_wrapper.inbasefilename))
 217                                         goto wav_abort_;
 218                                 if(xx == 0 || xx > FLAC__MAX_SAMPLE_RATE) {
 219                                         fprintf(stderr, "%s: ERROR: unsupported sample rate %u\n", encoder_wrapper.inbasefilename, (unsigned)xx);
 220                                         goto wav_abort_;
 221                                 }
 222                                 else if(options.sector_align && xx != 44100) {
 223                                         fprintf(stderr, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_wrapper.inbasefilename, (unsigned)xx);
 224                                         goto wav_abort_;
 225                                 }
 226                                 sample_rate = xx;
 227                                 /* avg bytes per second (ignored) */
 228                                 if(!read_little_endian_uint32(infile, &xx, false, encoder_wrapper.inbasefilename))
 229                                         goto wav_abort_;
 230                                 /* block align (ignored) */
 231                                 if(!read_little_endian_uint16(infile, &x, false, encoder_wrapper.inbasefilename))
 232                                         goto wav_abort_;
 233                                 /* bits per sample */
 234                                 if(!read_little_endian_uint16(infile, &x, false, encoder_wrapper.inbasefilename))
 235                                         goto wav_abort_;
 236                                 if(x != 8 && x != 16) {
 237                                         fprintf(stderr, "%s: ERROR: unsupported bits per sample %u\n", encoder_wrapper.inbasefilename, (unsigned)x);
 238                                         goto wav_abort_;
 239                                 }
 240                                 bps = x;
 241                                 is_unsigned_samples = (x == 8);
 242
 243                                 /* skip any extra data in the fmt sub-chunk */
 244                                 data_bytes -= 16;
 245                                 if(data_bytes > 0) {
 246                                         unsigned left, need;
 247                                         for(left = data_bytes; left > 0; ) {
 248                                                 need = min(left, CHUNK_OF_SAMPLES);
 249                                                 if(fread(ucbuffer, 1, need, infile) < need) {
 250                                                         fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_wrapper.inbasefilename);
 251                                                         goto wav_abort_;
 252                                                 }
 253                                                 left -= need;
 254                                         }
 255                                 }
 256
 257                                 got_fmt_chunk = true;
 258                         }
 259                 }
 260                 else if(xx == 0x61746164) { /* "data" */
 261                         if(got_data_chunk) {
 262                                 fprintf(stderr, "%s: WARNING: skipping extra 'data' sub-chunk\n", encoder_wrapper.inbasefilename);
 263                         }
 264                         else if(!got_fmt_chunk) {
 265                                 fprintf(stderr, "%s: ERROR: got data sub-chunk before fmt sub-chunk\n", encoder_wrapper.inbasefilename);
 266                                 goto wav_abort_;
 267                         }
 268                         else {
 269                                 /* data size */
 270                                 if(!read_little_endian_uint32(infile, &xx, false, encoder_wrapper.inbasefilename))
 271                                         goto wav_abort_;
 272                                 data_bytes = xx;
 273
 274                                 bytes_per_wide_sample = channels * (bps >> 3);
 275
 276                                 if(options.common.skip > 0) {
 277                                         if(infile != stdin) {
 278                                                 if(-1 == fseek(infile, bytes_per_wide_sample * (unsigned)options.common.skip, SEEK_CUR)) {
 279                                                         fprintf(stderr, "%s: ERROR during seek while skipping samples\n", encoder_wrapper.inbasefilename);
 280                                                         goto wav_abort_;
 281                                                 }
 282                                         }
 283                                         else {
 284                                                 unsigned left, need;
 285                                                 for(left = (unsigned)options.common.skip; left > 0; ) { /*@@@ WATCHOUT: 4GB limit */
 286                                                         need = min(left, CHUNK_OF_SAMPLES);
 287                                                         if(fread(ucbuffer, bytes_per_wide_sample, need, infile) < need) {
 288                                                                 fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_wrapper.inbasefilename);
 289                                                                 goto wav_abort_;
 290                                                         }
 291                                                         left -= need;
 292                                                 }
 293                                         }
 294                                 }
 295
 296                                 data_bytes -= (unsigned)options.common.skip * bytes_per_wide_sample; /*@@@ WATCHOUT: 4GB limit */
 297                                 encoder_wrapper.total_samples_to_encode = data_bytes / bytes_per_wide_sample + *options.align_reservoir_samples;
 298                                 if(options.sector_align) {
 299                                         align_remainder = (unsigned)(encoder_wrapper.total_samples_to_encode % 588);
 300                                         if(options.is_last_file)
 301                                                 encoder_wrapper.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
 302                                         else
 303                                                 encoder_wrapper.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
 304                                 }
 305
 306                                 /* +44 for the size of the WAV headers; this is just an estimate for the progress indicator and doesn't need to be exact */
 307                                 encoder_wrapper.unencoded_size = encoder_wrapper.total_samples_to_encode * bytes_per_wide_sample + 44;
 308
 309                                 if(!init_encoder(options.common, channels, bps, sample_rate, &encoder_wrapper))
 310                                         goto wav_abort_;
 311
 312                                 encoder_wrapper.verify_fifo.into_frames = true;
 313
 314                                 /*
 315                                  * first do any samples in the reservoir
 316                                  */
 317                                 if(options.sector_align && *options.align_reservoir_samples > 0) {
 318                                         /* NOTE: some versions of GCC can't figure out const-ness right and will give you an 'incompatible pointer type' warning on arg 2 here: */
 319                                         append_to_verify_fifo(&encoder_wrapper, options.align_reservoir, channels, *options.align_reservoir_samples);
 320
 321                                         /* NOTE: some versions of GCC can't figure out const-ness right and will give you an 'incompatible pointer type' warning on arg 2 here: */
 322                                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, options.align_reservoir, *options.align_reservoir_samples)) {
 323                                                 fprintf(stderr, "%s: ERROR during encoding, state = %d:%s\n", encoder_wrapper.inbasefilename, FLAC__stream_encoder_get_state(encoder_wrapper.encoder), FLAC__StreamEncoderStateString[FLAC__stream_encoder_get_state(encoder_wrapper.encoder)]);
 324                                                 goto wav_abort_;
 325                                         }
 326                                 }
 327
 328                                 /*
 329                                  * decrement the data_bytes counter if we need to align the file
 330                                  */
 331                                 if(options.sector_align) {
 332                                         if(options.is_last_file) {
 333                                                 *options.align_reservoir_samples = 0;
 334                                         }
 335                                         else {
 336                                                 *options.align_reservoir_samples = align_remainder;
 337                                                 data_bytes -= (*options.align_reservoir_samples) * bytes_per_wide_sample;
 338                                         }
 339                                 }
 340
 341                                 /*
 342                                  * now do from the file
 343                                  */
 344                                 while(data_bytes > 0) {
 345                                         bytes_read = fread(ucbuffer, sizeof(unsigned char), min(data_bytes, CHUNK_OF_SAMPLES * bytes_per_wide_sample), infile);
 346                                         if(bytes_read == 0) {
 347                                                 if(ferror(infile)) {
 348                                                         fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 349                                                         goto wav_abort_;
 350                                                 }
 351                                                 else if(feof(infile)) {
 352                                                         fprintf(stderr, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_wrapper.inbasefilename, (unsigned)encoder_wrapper.total_samples_to_encode, (unsigned)encoder_wrapper.samples_written);
 353                                                         data_bytes = 0;
 354                                                 }
 355                                         }
 356                                         else {
 357                                                 if(bytes_read % bytes_per_wide_sample != 0) {
 358                                                         fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_wrapper.inbasefilename);
 359                                                         goto wav_abort_;
 360                                                 }
 361                                                 else {
 362                                                         unsigned wide_samples = bytes_read / bytes_per_wide_sample;
 363                                                         format_input(input, wide_samples, false, is_unsigned_samples, channels, bps, &encoder_wrapper);
 364
 365                                                         /* NOTE: some versions of GCC can't figure out const-ness right and will give you an 'incompatible pointer type' warning on arg 2 here: */
 366                                                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, input, wide_samples)) {
 367                                                                 fprintf(stderr, "%s: ERROR during encoding, state = %d:%s\n", encoder_wrapper.inbasefilename, FLAC__stream_encoder_get_state(encoder_wrapper.encoder), FLAC__StreamEncoderStateString[FLAC__stream_encoder_get_state(encoder_wrapper.encoder)]);
 368                                                                 goto wav_abort_;
 369                                                         }
 370                                                         data_bytes -= bytes_read;
 371                                                 }
 372                                         }
 373                                 }
 374
 375                                 /*
 376                                  * now read unaligned samples into reservoir or pad with zeroes if necessary
 377                                  */
 378                                 if(options.sector_align) {
 379                                         if(options.is_last_file) {
 380                                                 unsigned wide_samples = 588 - align_remainder;
 381                                                 if(wide_samples < 588) {
 382                                                         unsigned channel;
 383
 384                                                         info_align_zero = wide_samples;
 385                                                         data_bytes = wide_samples * bytes_per_wide_sample;
 386                                                         for(channel = 0; channel < channels; channel++)
 387                                                                 memset(input[channel], 0, data_bytes);
 388                                                         /* NOTE: some versions of GCC can't figure out const-ness right and will give you an 'incompatible pointer type' warning on arg 2 here: */
 389                                                         append_to_verify_fifo(&encoder_wrapper, input, channels, wide_samples);
 390
 391                                                         /* NOTE: some versions of GCC can't figure out const-ness right and will give you an 'incompatible pointer type' warning on arg 2 here: */
 392                                                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, input, wide_samples)) {
 393                                                                 fprintf(stderr, "%s: ERROR during encoding, state = %d:%s\n", encoder_wrapper.inbasefilename, FLAC__stream_encoder_get_state(encoder_wrapper.encoder), FLAC__StreamEncoderStateString[FLAC__stream_encoder_get_state(encoder_wrapper.encoder)]);
 394                                                                 goto wav_abort_;
 395                                                         }
 396                                                 }
 397                                         }
 398                                         else {
 399                                                 if(*options.align_reservoir_samples > 0) {
 400                                                         FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
 401                                                         bytes_read = fread(ucbuffer, sizeof(unsigned char), (*options.align_reservoir_samples) * bytes_per_wide_sample, infile);
 402                                                         if(bytes_read == 0 && ferror(infile)) {
 403                                                                 fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 404                                                                 goto wav_abort_;
 405                                                         }
 406                                                         else if(bytes_read != (*options.align_reservoir_samples) * bytes_per_wide_sample) {
 407                                                                 fprintf(stderr, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_wrapper.inbasefilename, (unsigned)encoder_wrapper.total_samples_to_encode, (unsigned)encoder_wrapper.samples_written);
 408                                                                 data_bytes = 0;
 409                                                         }
 410                                                         else {
 411                                                                 info_align_carry = *options.align_reservoir_samples;
 412                                                                 format_input(options.align_reservoir, *options.align_reservoir_samples, false, is_unsigned_samples, channels, bps, &encoder_wrapper);
 413                                                         }
 414                                                 }
 415                                         }
 416                                 }
 417
 418                                 got_data_chunk = true;
 419                         }
 420                 }
 421                 else {
 422                         fprintf(stderr, "%s: WARNING: skipping unknown sub-chunk '%c%c%c%c'\n", encoder_wrapper.inbasefilename, (char)(xx&255), (char)((xx>>8)&255), (char)((xx>>16)&255), (char)(xx>>24));
 423                         /* sub-chunk size */
 424                         if(!read_little_endian_uint32(infile, &xx, false, encoder_wrapper.inbasefilename))
 425                                 goto wav_abort_;
 426                         if(infile != stdin) {
 427                                 if(-1 == fseek(infile, xx, SEEK_CUR)) {
 428                                         fprintf(stderr, "%s: ERROR during seek while skipping unsupported sub-chunk\n", encoder_wrapper.inbasefilename);
 429                                         goto wav_abort_;
 430                                 }
 431                         }
 432                         else {
 433                                 unsigned left, need;
 434                                 const unsigned chunk = sizeof(ucbuffer);
 435                                 for(left = xx; left > 0; ) {
 436                                         need = min(left, chunk);
 437                                         if(fread(ucbuffer, 1, need, infile) < need) {
 438                                                 fprintf(stderr, "%s: ERROR during read while skipping unsupported sub-chunk\n", encoder_wrapper.inbasefilename);
 439                                                 goto wav_abort_;
 440                                         }
 441                                         left -= need;
 442                                 }
 443                         }
 444                 }
 445         }
 446
 447         if(encoder_wrapper.encoder) {
 448                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 449                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 450                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 451 #ifdef FLAC__HAS_OGG
 452                 if(encoder_wrapper.use_ogg)
 453                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 454 #endif
 455         }
 456         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0) {
 457                 print_stats(&encoder_wrapper);
 458                 fprintf(stderr, "\n");
 459         }
 460         if(0 != encoder_wrapper.seek_table.points)
 461                 free(encoder_wrapper.seek_table.points);
 462         if(options.common.verify) {
 463                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 464                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 465                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 466                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 467                         return 1;
 468                 }
 469         }
 470         if(info_align_carry >= 0)
 471                 fprintf(stderr, "%s: INFO: sector alignment causing %d samples to be carried over\n", encoder_wrapper.inbasefilename, info_align_carry);
 472         if(info_align_zero >= 0)
 473                 fprintf(stderr, "%s: INFO: sector alignment causing %d zero samples to be appended\n", encoder_wrapper.inbasefilename, info_align_zero);
 474         if(infile != stdin)
 475                 fclose(infile);
 476         return 0;
 477 wav_abort_:
 478         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0)
 479                 fprintf(stderr, "\n");
 480         if(encoder_wrapper.encoder) {
 481                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 482                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 483                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 484 #ifdef FLAC__HAS_OGG
 485                 if(encoder_wrapper.use_ogg)
 486                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 487 #endif
 488         }
 489         if(0 != encoder_wrapper.seek_table.points)
 490                 free(encoder_wrapper.seek_table.points);
 491         if(options.common.verify) {
 492                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 493                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 494                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 495                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 496                         return 1;
 497                 }
 498         }
 499         if(infile != stdin)
 500                 fclose(infile);
 501         unlink(outfilename);
 502         return 1;
 503 }
 504
 505 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)
 506 {
 507         encoder_wrapper_struct encoder_wrapper;
 508         size_t bytes_read;
 509         const size_t bytes_per_wide_sample = options.channels * (options.bps >> 3);
 510
 511         encoder_wrapper.encoder = 0;
 512         encoder_wrapper.verify = options.common.verify;
 513         encoder_wrapper.verbose = options.common.verbose;
 514         encoder_wrapper.bytes_written = 0;
 515         encoder_wrapper.samples_written = 0;
 516         encoder_wrapper.stream_offset = 0;
 517         encoder_wrapper.inbasefilename = flac__file_get_basename(infilename);
 518         encoder_wrapper.outfilename = outfilename;
 519         encoder_wrapper.seek_table.points = 0;
 520         encoder_wrapper.first_seek_point_to_check = 0;
 521 #ifdef FLAC__HAS_OGG
 522         encoder_wrapper.use_ogg = options.common.use_ogg;
 523 #endif
 524
 525         if(0 == strcmp(outfilename, "-")) {
 526                 encoder_wrapper.fout = stdout;
 527         }
 528         else {
 529                 if(0 == (encoder_wrapper.fout = fopen(outfilename, "wb"))) {
 530                         fprintf(stderr, "ERROR: can't open output file %s\n", outfilename);
 531                         fclose(infile);
 532                         return 1;
 533                 }
 534         }
 535
 536         if(!init(&encoder_wrapper))
 537                 goto raw_abort_;
 538
 539         /* get the file length */
 540         if(infilesize < 0) {
 541                 encoder_wrapper.total_samples_to_encode = encoder_wrapper.unencoded_size = 0;
 542         }
 543         else {
 544                 encoder_wrapper.total_samples_to_encode = (unsigned)infilesize / bytes_per_wide_sample - options.common.skip;
 545                 encoder_wrapper.unencoded_size = encoder_wrapper.total_samples_to_encode * bytes_per_wide_sample;
 546         }
 547
 548         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode <= 0)
 549                 fprintf(stderr, "(No runtime statistics possible; please wait for encoding to finish...)\n");
 550
 551         if(options.common.skip > 0) {
 552                 unsigned skip_bytes = bytes_per_wide_sample * (unsigned)options.common.skip;
 553                 if(skip_bytes > lookahead_length) {
 554                         skip_bytes -= lookahead_length;
 555                         lookahead_length = 0;
 556                         if(infile != stdin) {
 557                                 if(-1 == fseek(infile, (long)skip_bytes, SEEK_CUR)) {
 558                                         fprintf(stderr, "%s: ERROR during seek while skipping samples\n", encoder_wrapper.inbasefilename);
 559                                         goto raw_abort_;
 560                                 }
 561                         }
 562                         else {
 563                                 unsigned left, need;
 564                                 const unsigned chunk = sizeof(ucbuffer);
 565                                 for(left = skip_bytes; left > 0; ) {
 566                                         need = min(left, chunk);
 567                                         if(fread(ucbuffer, 1, need, infile) < need) {
 568                                                 fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_wrapper.inbasefilename);
 569                                                 goto raw_abort_;
 570                                         }
 571                                         left -= need;
 572                                 }
 573                         }
 574                 }
 575                 else {
 576                         lookahead += skip_bytes;
 577                         lookahead_length -= skip_bytes;
 578                 }
 579         }
 580
 581         if(!init_encoder(options.common, options.channels, options.bps, options.sample_rate, &encoder_wrapper))
 582                 goto raw_abort_;
 583
 584         encoder_wrapper.verify_fifo.into_frames = true;
 585
 586         while(!feof(infile)) {
 587                 if(lookahead_length > 0) {
 588                         FLAC__ASSERT(lookahead_length < CHUNK_OF_SAMPLES * bytes_per_wide_sample);
 589                         memcpy(ucbuffer, lookahead, lookahead_length);
 590                         bytes_read = fread(ucbuffer+lookahead_length, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample - lookahead_length, infile) + lookahead_length;
 591                         if(ferror(infile)) {
 592                                 fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 593                                 goto raw_abort_;
 594                         }
 595                         lookahead_length = 0;
 596                 }
 597                 else
 598                         bytes_read = fread(ucbuffer, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample, infile);
 599
 600                 if(bytes_read == 0) {
 601                         if(ferror(infile)) {
 602                                 fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 603                                 goto raw_abort_;
 604                         }
 605                 }
 606                 else if(bytes_read % bytes_per_wide_sample != 0) {
 607                         fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_wrapper.inbasefilename);
 608                         goto raw_abort_;
 609                 }
 610                 else {
 611                         unsigned wide_samples = bytes_read / bytes_per_wide_sample;
 612                         format_input(input, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps, &encoder_wrapper);
 613
 614                         /* NOTE: some versions of GCC can't figure out const-ness right and will give you an 'incompatible pointer type' warning on arg 2 here: */
 615                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, input, wide_samples)) {
 616                                 fprintf(stderr, "%s: ERROR during encoding, state = %d:%s\n", encoder_wrapper.inbasefilename, FLAC__stream_encoder_get_state(encoder_wrapper.encoder), FLAC__StreamEncoderStateString[FLAC__stream_encoder_get_state(encoder_wrapper.encoder)]);
 617                                 goto raw_abort_;
 618                         }
 619                 }
 620         }
 621
 622         if(encoder_wrapper.encoder) {
 623                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 624                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 625                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 626 #ifdef FLAC__HAS_OGG
 627                 if(encoder_wrapper.use_ogg)
 628                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 629 #endif
 630         }
 631         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0) {
 632                 print_stats(&encoder_wrapper);
 633                 fprintf(stderr, "\n");
 634         }
 635         if(0 != encoder_wrapper.seek_table.points)
 636                 free(encoder_wrapper.seek_table.points);
 637         if(options.common.verify) {
 638                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 639                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 640                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 641                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 642                         return 1;
 643                 }
 644         }
 645         if(infile != stdin)
 646                 fclose(infile);
 647         return 0;
 648 raw_abort_:
 649         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0)
 650                 fprintf(stderr, "\n");
 651         if(encoder_wrapper.encoder) {
 652                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 653                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 654                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 655 #ifdef FLAC__HAS_OGG
 656                 if(encoder_wrapper.use_ogg)
 657                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 658 #endif
 659         }
 660         if(0 != encoder_wrapper.seek_table.points)
 661                 free(encoder_wrapper.seek_table.points);
 662         if(options.common.verify) {
 663                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 664                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 665                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 666                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 667                         return 1;
 668                 }
 669         }
 670         if(infile != stdin)
 671                 fclose(infile);
 672         unlink(outfilename);
 673         return 1;
 674 }
 675
 676 FLAC__bool init(encoder_wrapper_struct *encoder_wrapper)
 677 {
 678         unsigned i;
 679         FLAC__uint32 test = 1;
 680
 681         is_big_endian_host = (*((FLAC__byte*)(&test)))? false : true;
 682
 683         for(i = 0; i < FLAC__MAX_CHANNELS; i++)
 684                 input[i] = &(in[i][0]);
 685
 686         encoder_wrapper->encoder = FLAC__stream_encoder_new();
 687         if(0 == encoder_wrapper->encoder) {
 688                 fprintf(stderr, "%s: ERROR creating the encoder instance\n", encoder_wrapper->inbasefilename);
 689                 return false;
 690         }
 691
 692 #ifdef FLAC__HAS_OGG
 693         if(encoder_wrapper->use_ogg) {
 694                 if(ogg_stream_init(&encoder_wrapper->ogg.os, 0) != 0) {
 695                         fprintf(stderr, "%s: ERROR initializing the Ogg stream\n", encoder_wrapper->inbasefilename);
 696                         FLAC__stream_encoder_delete(encoder_wrapper->encoder);
 697                         return false;
 698                 }
 699         }
 700 #endif
 701
 702         return true;
 703 }
 704
 705 FLAC__bool init_encoder(encode_options_t options, unsigned channels, unsigned bps, unsigned sample_rate, encoder_wrapper_struct *encoder_wrapper)
 706 {
 707         unsigned i;
 708
 709         if(channels != 2)
 710                 options.do_mid_side = options.loose_mid_side = false;
 711
 712         if(encoder_wrapper->verify) {
 713                 /* set up the fifo which will hold the original signal to compare against */
 714                 encoder_wrapper->verify_fifo.size = options.blocksize + CHUNK_OF_SAMPLES;
 715                 for(i = 0; i < channels; i++) {
 716                         if(0 == (encoder_wrapper->verify_fifo.original[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder_wrapper->verify_fifo.size))) {
 717                                 fprintf(stderr, "%s: ERROR allocating verify buffers\n", encoder_wrapper->inbasefilename);
 718                                 return false;
 719                         }
 720                 }
 721                 encoder_wrapper->verify_fifo.tail = 0;
 722                 encoder_wrapper->verify_fifo.into_frames = false;
 723                 encoder_wrapper->verify_fifo.result = FLAC__VERIFY_OK;
 724
 725                 /* set up a stream decoder for verification */
 726                 encoder_wrapper->verify_fifo.decoder = FLAC__stream_decoder_new();
 727                 if(0 == encoder_wrapper->verify_fifo.decoder) {
 728                         fprintf(stderr, "%s: ERROR creating the verify decoder instance\n", encoder_wrapper->inbasefilename);
 729                         return false;
 730                 }
 731                 FLAC__stream_decoder_set_read_callback(encoder_wrapper->verify_fifo.decoder, verify_read_callback);
 732                 FLAC__stream_decoder_set_write_callback(encoder_wrapper->verify_fifo.decoder, verify_write_callback);
 733                 FLAC__stream_decoder_set_metadata_callback(encoder_wrapper->verify_fifo.decoder, verify_metadata_callback);
 734                 FLAC__stream_decoder_set_error_callback(encoder_wrapper->verify_fifo.decoder, verify_error_callback);
 735                 FLAC__stream_decoder_set_client_data(encoder_wrapper->verify_fifo.decoder, encoder_wrapper);
 736                 if(FLAC__stream_decoder_init(encoder_wrapper->verify_fifo.decoder) != FLAC__STREAM_DECODER_SEARCH_FOR_METADATA) {
 737                         fprintf(stderr, "%s: ERROR initializing decoder, state = %d:%s\n", encoder_wrapper->inbasefilename, FLAC__stream_decoder_get_state(encoder_wrapper->verify_fifo.decoder), FLAC__StreamDecoderStateString[FLAC__stream_decoder_get_state(encoder_wrapper->verify_fifo.decoder)]);
 738                         return false;
 739                 }
 740         }
 741
 742         if(!convert_to_seek_table(options.requested_seek_points, options.num_requested_seek_points, encoder_wrapper->total_samples_to_encode, options.blocksize, &encoder_wrapper->seek_table)) {
 743                 fprintf(stderr, "%s: ERROR allocating seek table\n", encoder_wrapper->inbasefilename);
 744                 return false;
 745         }
 746
 747         FLAC__stream_encoder_set_streamable_subset(encoder_wrapper->encoder, !options.lax);
 748         FLAC__stream_encoder_set_do_mid_side_stereo(encoder_wrapper->encoder, options.do_mid_side);
 749         FLAC__stream_encoder_set_loose_mid_side_stereo(encoder_wrapper->encoder, options.loose_mid_side);
 750         FLAC__stream_encoder_set_channels(encoder_wrapper->encoder, channels);
 751         FLAC__stream_encoder_set_bits_per_sample(encoder_wrapper->encoder, bps);
 752         FLAC__stream_encoder_set_sample_rate(encoder_wrapper->encoder, sample_rate);
 753         FLAC__stream_encoder_set_blocksize(encoder_wrapper->encoder, options.blocksize);
 754         FLAC__stream_encoder_set_max_lpc_order(encoder_wrapper->encoder, options.max_lpc_order);
 755         FLAC__stream_encoder_set_qlp_coeff_precision(encoder_wrapper->encoder, options.qlp_coeff_precision);
 756         FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder_wrapper->encoder, options.do_qlp_coeff_prec_search);
 757         FLAC__stream_encoder_set_do_escape_coding(encoder_wrapper->encoder, options.do_escape_coding);
 758         FLAC__stream_encoder_set_do_exhaustive_model_search(encoder_wrapper->encoder, options.do_exhaustive_model_search);
 759         FLAC__stream_encoder_set_min_residual_partition_order(encoder_wrapper->encoder, options.min_residual_partition_order);
 760         FLAC__stream_encoder_set_max_residual_partition_order(encoder_wrapper->encoder, options.max_residual_partition_order);
 761         FLAC__stream_encoder_set_rice_parameter_search_dist(encoder_wrapper->encoder, options.rice_parameter_search_dist);
 762         FLAC__stream_encoder_set_total_samples_estimate(encoder_wrapper->encoder, encoder_wrapper->total_samples_to_encode);
 763         FLAC__stream_encoder_set_seek_table(encoder_wrapper->encoder, (encoder_wrapper->seek_table.num_points > 0)? &encoder_wrapper->seek_table : 0);
 764         FLAC__stream_encoder_set_padding(encoder_wrapper->encoder, options.padding);
 765         FLAC__stream_encoder_set_last_metadata_is_last(encoder_wrapper->encoder, true);
 766         FLAC__stream_encoder_set_write_callback(encoder_wrapper->encoder, write_callback);
 767         FLAC__stream_encoder_set_metadata_callback(encoder_wrapper->encoder, metadata_callback);
 768         FLAC__stream_encoder_set_client_data(encoder_wrapper->encoder, encoder_wrapper);
 769
 770         if(FLAC__stream_encoder_init(encoder_wrapper->encoder) != FLAC__STREAM_ENCODER_OK) {
 771                 fprintf(stderr, "%s: ERROR initializing encoder, state = %d:%s\n", encoder_wrapper->inbasefilename, FLAC__stream_encoder_get_state(encoder_wrapper->encoder), FLAC__StreamEncoderStateString[FLAC__stream_encoder_get_state(encoder_wrapper->encoder)]);
 772                 return false;
 773         }
 774
 775         /* the above call writes all the metadata, so we save the stream offset now */
 776         encoder_wrapper->stream_offset = encoder_wrapper->bytes_written;
 777
 778         return true;
 779 }
 780
 781 FLAC__bool convert_to_seek_table(char *requested_seek_points, int num_requested_seek_points, FLAC__uint64 stream_samples, unsigned blocksize, FLAC__StreamMetaData_SeekTable *seek_table)
 782 {
 783         unsigned i, j, real_points, placeholders;
 784         char *pt = requested_seek_points, *q;
 785         FLAC__bool first;
 786
 787         seek_table->num_points = 0;
 788
 789         if(num_requested_seek_points == 0)
 790                 return true;
 791
 792         if(num_requested_seek_points < 0) {
 793                 strcpy(requested_seek_points, "100x<");
 794                 num_requested_seek_points = 1;
 795         }
 796
 797         /* first count how many individual seek point we may need */
 798         real_points = placeholders = 0;
 799         for(i = 0; i < (unsigned)num_requested_seek_points; i++) {
 800                 q = strchr(pt, '<');
 801                 FLAC__ASSERT(0 != q);
 802                 *q = '\0';
 803
 804                 if(0 == strcmp(pt, "X")) { /* -S X */
 805                         placeholders++;
 806                 }
 807                 else if(pt[strlen(pt)-1] == 'x') { /* -S #x */
 808                         if(stream_samples > 0) /* we can only do these if we know the number of samples to encode up front */
 809                                 real_points += (unsigned)atoi(pt);
 810                 }
 811                 else { /* -S # */
 812                         real_points++;
 813                 }
 814                 *q++ = '<';
 815
 816                 pt = q;
 817         }
 818         pt = requested_seek_points;
 819
 820         /* make some space */
 821         if(0 == (seek_table->points = (FLAC__StreamMetaData_SeekPoint*)malloc(sizeof(FLAC__StreamMetaData_SeekPoint) * (real_points+placeholders))))
 822                 return false;
 823
 824         /* initialize the seek_table.  we set frame_samples to zero to signify the points have not yet been hit by a frame write yet. */
 825         for(i = 0; i < real_points+placeholders; i++) {
 826                 seek_table->points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
 827                 seek_table->points[i].stream_offset = 0;
 828                 seek_table->points[i].frame_samples = 0;
 829         }
 830
 831         for(i = 0; i < (unsigned)num_requested_seek_points; i++) {
 832                 q = strchr(pt, '<');
 833                 FLAC__ASSERT(0 != q);
 834                 *q++ = '\0';
 835
 836                 if(0 == strcmp(pt, "X")) { /* -S X */
 837                         ; /* we append placeholders later */
 838                 }
 839                 else if(pt[strlen(pt)-1] == 'x') { /* -S #x */
 840                         if(stream_samples > 0) { /* we can only do these if we know the number of samples to encode up front */
 841                                 unsigned j, n;
 842                                 n = (unsigned)atoi(pt);
 843                                 for(j = 0; j < n; j++)
 844                                         append_point_to_seek_table(seek_table, stream_samples * (FLAC__uint64)j / (FLAC__uint64)n, stream_samples, blocksize);
 845                         }
 846                 }
 847                 else { /* -S # */
 848                         append_point_to_seek_table(seek_table, (FLAC__uint64)atoi(pt), stream_samples, blocksize);
 849                 }
 850
 851                 pt = q;
 852         }
 853
 854         /* sort the seekpoints */
 855         qsort(seek_table->points, seek_table->num_points, sizeof(FLAC__StreamMetaData_SeekPoint), (int (*)(const void *, const void *))seekpoint_compare);
 856
 857         /* uniqify the seekpoints */
 858         first = true;
 859         for(i = j = 0; i < seek_table->num_points; i++) {
 860                 if(!first) {
 861                         if(seek_table->points[i].sample_number == seek_table->points[j-1].sample_number)
 862                                 continue;
 863                 }
 864                 first = false;
 865                 seek_table->points[j++] = seek_table->points[i];
 866         }
 867         seek_table->num_points = j;
 868
 869         /* append placeholders */
 870         for(i = 0, j = seek_table->num_points; i < placeholders; i++, j++)
 871                 seek_table->points[j].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
 872         seek_table->num_points += placeholders;
 873
 874         return true;
 875 }
 876
 877 void append_point_to_seek_table(FLAC__StreamMetaData_SeekTable *seek_table, FLAC__uint64 sample, FLAC__uint64 stream_samples, FLAC__uint64 blocksize)
 878 {
 879         const FLAC__uint64 target_sample = (sample / blocksize) * blocksize;
 880
 881         if(stream_samples == 0 || target_sample < stream_samples)
 882                 seek_table->points[seek_table->num_points++].sample_number = target_sample;
 883 }
 884
 885 int seekpoint_compare(const FLAC__StreamMetaData_SeekPoint *l, const FLAC__StreamMetaData_SeekPoint *r)
 886 {
 887         /* we don't just 'return l->sample_number - r->sample_number' since the result (FLAC__int64) might overflow an 'int' */
 888         if(l->sample_number == r->sample_number)
 889                 return 0;
 890         else if(l->sample_number < r->sample_number)
 891                 return -1;
 892         else
 893                 return 1;
 894 }
 895
 896 void format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps, encoder_wrapper_struct *encoder_wrapper)
 897 {
 898         unsigned wide_sample, sample, channel, byte;
 899
 900         if(bps == 8) {
 901                 if(is_unsigned_samples) {
 902                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 903                                 for(channel = 0; channel < channels; channel++, sample++)
 904                                         dest[channel][wide_sample] = (FLAC__int32)ucbuffer[sample] - 0x80;
 905                 }
 906                 else {
 907                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 908                                 for(channel = 0; channel < channels; channel++, sample++)
 909                                         dest[channel][wide_sample] = (FLAC__int32)scbuffer[sample];
 910                 }
 911         }
 912         else if(bps == 16) {
 913                 if(is_big_endian != is_big_endian_host) {
 914                         unsigned char tmp;
 915                         const unsigned bytes = wide_samples * channels * (bps >> 3);
 916                         for(byte = 0; byte < bytes; byte += 2) {
 917                                 tmp = ucbuffer[byte];
 918                                 ucbuffer[byte] = ucbuffer[byte+1];
 919                                 ucbuffer[byte+1] = tmp;
 920                         }
 921                 }
 922                 if(is_unsigned_samples) {
 923                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 924                                 for(channel = 0; channel < channels; channel++, sample++)
 925                                         dest[channel][wide_sample] = (FLAC__int32)usbuffer[sample] - 0x8000;
 926                 }
 927                 else {
 928                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 929                                 for(channel = 0; channel < channels; channel++, sample++)
 930                                         dest[channel][wide_sample] = (FLAC__int32)ssbuffer[sample];
 931                 }
 932         }
 933         else if(bps == 24) {
 934                 if(!is_big_endian) {
 935                         unsigned char tmp;
 936                         const unsigned bytes = wide_samples * channels * (bps >> 3);
 937                         for(byte = 0; byte < bytes; byte += 3) {
 938                                 tmp = ucbuffer[byte];
 939                                 ucbuffer[byte] = ucbuffer[byte+2];
 940                                 ucbuffer[byte+2] = tmp;
 941                         }
 942                 }
 943                 if(is_unsigned_samples) {
 944                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 945                                 for(channel = 0; channel < channels; channel++, sample++) {
 946                                         dest[channel][wide_sample]  = ucbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 947                                         dest[channel][wide_sample] |= ucbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 948                                         dest[channel][wide_sample] |= ucbuffer[byte++];
 949                                         dest[channel][wide_sample] -= 0x800000;
 950                                 }
 951                 }
 952                 else {
 953                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 954                                 for(channel = 0; channel < channels; channel++, sample++) {
 955                                         dest[channel][wide_sample]  = scbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 956                                         dest[channel][wide_sample] |= ucbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 957                                         dest[channel][wide_sample] |= ucbuffer[byte++];
 958                                 }
 959                 }
 960         }
 961         else {
 962                 FLAC__ASSERT(0);
 963         }
 964
 965         /* NOTE: some versions of GCC can't figure out const-ness right and will give you an 'incompatible pointer type' warning on arg 2 here: */
 966         append_to_verify_fifo(encoder_wrapper, dest, channels, wide_samples);
 967 }
 968
 969 void append_to_verify_fifo(encoder_wrapper_struct *encoder_wrapper, const FLAC__int32 *src[], unsigned channels, unsigned wide_samples)
 970 {
 971         if(encoder_wrapper->verify) {
 972                 unsigned channel;
 973                 for(channel = 0; channel < channels; channel++)
 974                         memcpy(&encoder_wrapper->verify_fifo.original[channel][encoder_wrapper->verify_fifo.tail], src[channel], sizeof(FLAC__int32) * wide_samples);
 975                 encoder_wrapper->verify_fifo.tail += wide_samples;
 976                 FLAC__ASSERT(encoder_wrapper->verify_fifo.tail <= encoder_wrapper->verify_fifo.size);
 977         }
 978 }
 979
 980 FLAC__StreamEncoderWriteStatus write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
 981 {
 982         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
 983         const unsigned mask = (FLAC__stream_encoder_get_do_exhaustive_model_search(encoder) || FLAC__stream_encoder_get_do_qlp_coeff_prec_search(encoder))? 0x1f : 0x7f;
 984
 985         /* mark the current seek point if hit (if stream_offset == 0 that means we're still writing metadata and haven't hit the first frame yet) */
 986         if(encoder_wrapper->stream_offset > 0 && encoder_wrapper->seek_table.num_points > 0) {
 987                 FLAC__uint64 current_sample = (FLAC__uint64)current_frame * (FLAC__uint64)FLAC__stream_encoder_get_blocksize(encoder), test_sample;
 988                 unsigned i;
 989                 for(i = encoder_wrapper->first_seek_point_to_check; i < encoder_wrapper->seek_table.num_points; i++) {
 990                         test_sample = encoder_wrapper->seek_table.points[i].sample_number;
 991                         if(test_sample > current_sample) {
 992                                 break;
 993                         }
 994                         else if(test_sample == current_sample) {
 995                                 encoder_wrapper->seek_table.points[i].stream_offset = encoder_wrapper->bytes_written - encoder_wrapper->stream_offset;
 996                                 encoder_wrapper->seek_table.points[i].frame_samples = FLAC__stream_encoder_get_blocksize(encoder);
 997                                 encoder_wrapper->first_seek_point_to_check++;
 998                                 break;
 999                         }
1000                         else {
1001                                 encoder_wrapper->first_seek_point_to_check++;
1002                         }
1003                 }
1004         }
1005
1006         encoder_wrapper->bytes_written += bytes;
1007         encoder_wrapper->samples_written += samples;
1008         encoder_wrapper->current_frame = current_frame;
1009
1010         if(samples && encoder_wrapper->verbose && encoder_wrapper->total_samples_to_encode > 0 && !(current_frame & mask))
1011                 print_stats(encoder_wrapper);
1012
1013         if(encoder_wrapper->verify) {
1014                 encoder_wrapper->verify_fifo.encoded_signal = buffer;
1015                 encoder_wrapper->verify_fifo.encoded_bytes = bytes;
1016                 if(encoder_wrapper->verify_fifo.into_frames) {
1017                         if(!FLAC__stream_decoder_process_one_frame(encoder_wrapper->verify_fifo.decoder)) {
1018                                 encoder_wrapper->verify_fifo.result = FLAC__VERIFY_FAILED_IN_FRAME;
1019                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1020                         }
1021                 }
1022                 else {
1023                         if(!FLAC__stream_decoder_process_metadata(encoder_wrapper->verify_fifo.decoder)) {
1024                                 encoder_wrapper->verify_fifo.result = FLAC__VERIFY_FAILED_IN_METADATA;
1025                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1026                         }
1027                 }
1028         }
1029
1030 #ifdef FLAC__HAS_OGG
1031         if(encoder_wrapper->use_ogg) {
1032                 ogg_packet op;
1033
1034                 memset(&op, 0, sizeof(op));
1035                 op.packet = (unsigned char *)buffer;
1036                 op.packetno = encoder_wrapper->current_frame;
1037                 op.bytes = bytes;
1038
1039                 if (encoder_wrapper->bytes_written == bytes)
1040                         op.b_o_s = 1;
1041
1042                 if (encoder_wrapper->total_samples_to_encode == encoder_wrapper->samples_written)
1043                         op.e_o_s = 1;
1044
1045                 ogg_stream_packetin(&encoder_wrapper->ogg.os, &op);
1046
1047                 while(ogg_stream_pageout(&encoder_wrapper->ogg.os, &encoder_wrapper->ogg.og) != 0) {
1048                         int written;
1049                         written = fwrite(encoder_wrapper->ogg.og.header, 1, encoder_wrapper->ogg.og.header_len, encoder_wrapper->fout);
1050                         if (written != encoder_wrapper->ogg.og.header_len)
1051                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1052
1053                         written = fwrite(encoder_wrapper->ogg.og.body, 1, encoder_wrapper->ogg.og.body_len, encoder_wrapper->fout);
1054                         if (written != encoder_wrapper->ogg.og.body_len)
1055                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1056                 }
1057
1058                 return FLAC__STREAM_ENCODER_WRITE_OK;
1059         }
1060         else
1061 #endif
1062         {
1063                 if(fwrite(buffer, sizeof(FLAC__byte), bytes, encoder_wrapper->fout) == bytes)
1064                         return FLAC__STREAM_ENCODER_WRITE_OK;
1065                 else
1066                         return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1067         }
1068 }
1069
1070 void metadata_callback(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetaData *metadata, void *client_data)
1071 {
1072         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1073         FLAC__byte b;
1074         FILE *f;
1075         const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
1076         const unsigned min_framesize = metadata->data.stream_info.min_framesize;
1077         const unsigned max_framesize = metadata->data.stream_info.max_framesize;
1078
1079         FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
1080
1081         /*
1082          * If we are writing to an ogg stream, there is no need to go back
1083          * and update the STREAMINFO or SEEKTABLE blocks; the values we would
1084          * update are not necessary with Ogg as the transport.  We can't do
1085          * it reliably anyway without knowing the Ogg structure.
1086          */
1087         if(encoder_wrapper->use_ogg)
1088                 return;
1089
1090         /*
1091          * we get called by the encoder when the encoding process has
1092          * finished so that we can update the STREAMINFO and SEEKTABLE
1093          * blocks.
1094          */
1095
1096         (void)encoder; /* silence compiler warning about unused parameter */
1097
1098         if(encoder_wrapper->fout == stdout)
1099                 return;
1100
1101         fclose(encoder_wrapper->fout);
1102         if(0 == (f = fopen(encoder_wrapper->outfilename, "r+b")))
1103                 return;
1104
1105         /* all this is based on intimate knowledge of the stream header
1106          * layout, but a change to the header format that would break this
1107          * would also break all streams encoded in the previous format.
1108          */
1109
1110         if(-1 == fseek(f, 26, SEEK_SET)) goto samples_;
1111         fwrite(metadata->data.stream_info.md5sum, 1, 16, f);
1112
1113 samples_:
1114         if(-1 == fseek(f, 21, SEEK_SET)) goto framesize_;
1115         if(fread(&b, 1, 1, f) != 1) goto framesize_;
1116         if(-1 == fseek(f, 21, SEEK_SET)) goto framesize_;
1117         b = (b & 0xf0) | (FLAC__byte)((samples >> 32) & 0x0F);
1118         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1119         b = (FLAC__byte)((samples >> 24) & 0xFF);
1120         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1121         b = (FLAC__byte)((samples >> 16) & 0xFF);
1122         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1123         b = (FLAC__byte)((samples >> 8) & 0xFF);
1124         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1125         b = (FLAC__byte)(samples & 0xFF);
1126         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1127
1128 framesize_:
1129         if(-1 == fseek(f, 12, SEEK_SET)) goto seektable_;
1130         b = (FLAC__byte)((min_framesize >> 16) & 0xFF);
1131         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1132         b = (FLAC__byte)((min_framesize >> 8) & 0xFF);
1133         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1134         b = (FLAC__byte)(min_framesize & 0xFF);
1135         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1136         b = (FLAC__byte)((max_framesize >> 16) & 0xFF);
1137         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1138         b = (FLAC__byte)((max_framesize >> 8) & 0xFF);
1139         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1140         b = (FLAC__byte)(max_framesize & 0xFF);
1141         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1142
1143 seektable_:
1144         if(encoder_wrapper->seek_table.num_points > 0) {
1145                 long pos;
1146                 unsigned i;
1147
1148                 /* convert any unused seek points to placeholders */
1149                 for(i = 0; i < encoder_wrapper->seek_table.num_points; i++) {
1150                         if(encoder_wrapper->seek_table.points[i].sample_number == FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER)
1151                                 break;
1152                         else if(encoder_wrapper->seek_table.points[i].frame_samples == 0)
1153                                 encoder_wrapper->seek_table.points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
1154                 }
1155
1156                 /* the offset of the seek table data 'pos' should be after then stream sync and STREAMINFO block and SEEKTABLE header */
1157                 pos = (FLAC__STREAM_SYNC_LEN + FLAC__STREAM_METADATA_IS_LAST_LEN + FLAC__STREAM_METADATA_TYPE_LEN + FLAC__STREAM_METADATA_LENGTH_LEN) / 8;
1158                 pos += metadata->length;
1159                 pos += (FLAC__STREAM_METADATA_IS_LAST_LEN + FLAC__STREAM_METADATA_TYPE_LEN + FLAC__STREAM_METADATA_LENGTH_LEN) / 8;
1160                 if(-1 == fseek(f, pos, SEEK_SET)) goto end_;
1161                 for(i = 0; i < encoder_wrapper->seek_table.num_points; i++) {
1162                         if(!write_big_endian_uint64(f, encoder_wrapper->seek_table.points[i].sample_number)) goto end_;
1163                         if(!write_big_endian_uint64(f, encoder_wrapper->seek_table.points[i].stream_offset)) goto end_;
1164                         if(!write_big_endian_uint16(f, (FLAC__uint16)encoder_wrapper->seek_table.points[i].frame_samples)) goto end_;
1165                 }
1166         }
1167
1168 end_:
1169         fclose(f);
1170         return;
1171 }
1172
1173 FLAC__StreamDecoderReadStatus verify_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
1174 {
1175         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1176         const unsigned encoded_bytes = encoder_wrapper->verify_fifo.encoded_bytes;
1177         (void)decoder;
1178
1179         if(encoded_bytes <= *bytes) {
1180                 *bytes = encoded_bytes;
1181                 memcpy(buffer, encoder_wrapper->verify_fifo.encoded_signal, *bytes);
1182         }
1183         else {
1184                 memcpy(buffer, encoder_wrapper->verify_fifo.encoded_signal, *bytes);
1185                 encoder_wrapper->verify_fifo.encoded_signal += *bytes;
1186                 encoder_wrapper->verify_fifo.encoded_bytes -= *bytes;
1187         }
1188
1189         return FLAC__STREAM_DECODER_READ_CONTINUE;
1190 }
1191
1192 FLAC__StreamDecoderWriteStatus verify_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data)
1193 {
1194         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1195         unsigned channel, l, r;
1196         const unsigned channels = FLAC__stream_decoder_get_channels(decoder);
1197         const unsigned bytes_per_block = sizeof(FLAC__int32) * FLAC__stream_decoder_get_blocksize(decoder);
1198
1199         for(channel = 0; channel < channels; channel++) {
1200                 if(0 != memcmp(buffer[channel], encoder_wrapper->verify_fifo.original[channel], bytes_per_block)) {
1201                         unsigned sample = 0;
1202                         int expect = 0, got = 0;
1203                         fprintf(stderr, "\n%s: ERROR: mismatch in decoded data, verify FAILED!\n", encoder_wrapper->inbasefilename);
1204                         fprintf(stderr, "       Please submit a bug report to\n");
1205                         fprintf(stderr, "           http://sourceforge.net/bugs/?func=addbug&group_id=13478\n");
1206                         fprintf(stderr, "       Make sure to include an email contact in the comment and/or use the\n");
1207                         fprintf(stderr, "       \"Monitor\" feature to monitor the bug status.\n");
1208                         for(l = 0, r = FLAC__stream_decoder_get_blocksize(decoder); l < r; l++) {
1209                                 if(buffer[channel][l] != encoder_wrapper->verify_fifo.original[channel][l]) {
1210                                         sample = l;
1211                                         expect = (int)encoder_wrapper->verify_fifo.original[channel][l];
1212                                         got = (int)buffer[channel][l];
1213                                         break;
1214                                 }
1215                         }
1216                         FLAC__ASSERT(l < r);
1217                         FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
1218                         fprintf(stderr, "       Absolute sample=%u, frame=%u, channel=%u, sample=%u, expected %d, got %d\n", (unsigned)frame->header.number.sample_number + sample, (unsigned)frame->header.number.sample_number / FLAC__stream_decoder_get_blocksize(decoder), channel, sample, expect, got); /*@@@ WATCHOUT: 4GB limit */
1219                         return FLAC__STREAM_DECODER_WRITE_ABORT;
1220                 }
1221         }
1222         /* dequeue the frame from the fifo */
1223         for(channel = 0; channel < channels; channel++) {
1224                 for(l = 0, r = frame->header.blocksize; r < encoder_wrapper->verify_fifo.tail; l++, r++) {
1225                         encoder_wrapper->verify_fifo.original[channel][l] = encoder_wrapper->verify_fifo.original[channel][r];
1226                 }
1227         }
1228         encoder_wrapper->verify_fifo.tail -= frame->header.blocksize;
1229         return FLAC__STREAM_DECODER_WRITE_CONTINUE;
1230 }
1231
1232 void verify_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data)
1233 {
1234         (void)decoder;
1235         (void)metadata;
1236         (void)client_data;
1237 }
1238
1239 void verify_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
1240 {
1241         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1242         (void)decoder;
1243         fprintf(stderr, "\n%s: ERROR: verification decoder returned error %d:%s\n", encoder_wrapper->inbasefilename, status, FLAC__StreamDecoderErrorStatusString[status]);
1244 }
1245
1246 void print_stats(const encoder_wrapper_struct *encoder_wrapper)
1247 {
1248 #ifdef _MSC_VER
1249         /* with VC++ you have to spoon feed it the casting */
1250         const double progress = (double)(FLAC__int64)encoder_wrapper->samples_written / (double)(FLAC__int64)encoder_wrapper->total_samples_to_encode;
1251         const double ratio = (double)(FLAC__int64)encoder_wrapper->bytes_written / ((double)(FLAC__int64)encoder_wrapper->unencoded_size * progress);
1252 #else
1253         const double progress = (double)encoder_wrapper->samples_written / (double)encoder_wrapper->total_samples_to_encode;
1254         const double ratio = (double)encoder_wrapper->bytes_written / ((double)encoder_wrapper->unencoded_size * progress);
1255 #endif
1256
1257         if(encoder_wrapper->samples_written == encoder_wrapper->total_samples_to_encode) {
1258                 fprintf(stderr, "\r%s:%s wrote %u bytes, ratio=%0.3f",
1259                         encoder_wrapper->inbasefilename,
1260                         encoder_wrapper->verify? (encoder_wrapper->verify_fifo.result == FLAC__VERIFY_OK? " Verify OK," : " Verify FAILED!") : "",
1261                         (unsigned)encoder_wrapper->bytes_written,
1262                         ratio
1263                 );
1264         }
1265         else {
1266                 fprintf(stderr, "\r%s: %u%% complete, ratio=%0.3f", encoder_wrapper->inbasefilename, (unsigned)floor(progress * 100.0 + 0.5), ratio);
1267         }
1268 }
1269
1270 FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
1271 {
1272         size_t bytes_read = fread(val, 1, 2, f);
1273
1274         if(bytes_read == 0) {
1275                 if(!eof_ok) {
1276                         fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1277                         return false;
1278                 }
1279                 else
1280                         return true;
1281         }
1282         else if(bytes_read < 2) {
1283                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1284                 return false;
1285         }
1286         else {
1287                 if(is_big_endian_host) {
1288                         FLAC__byte tmp, *b = (FLAC__byte*)val;
1289                         tmp = b[1]; b[1] = b[0]; b[0] = tmp;
1290                 }
1291                 return true;
1292         }
1293 }
1294
1295 FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
1296 {
1297         size_t bytes_read = fread(val, 1, 4, f);
1298
1299         if(bytes_read == 0) {
1300                 if(!eof_ok) {
1301                         fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1302                         return false;
1303                 }
1304                 else
1305                         return true;
1306         }
1307         else if(bytes_read < 4) {
1308                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1309                 return false;
1310         }
1311         else {
1312                 if(is_big_endian_host) {
1313                         FLAC__byte tmp, *b = (FLAC__byte*)val;
1314                         tmp = b[3]; b[3] = b[0]; b[0] = tmp;
1315                         tmp = b[2]; b[2] = b[1]; b[1] = tmp;
1316                 }
1317                 return true;
1318         }
1319 }
1320
1321 FLAC__bool write_big_endian_uint16(FILE *f, FLAC__uint16 val)
1322 {
1323         if(!is_big_endian_host) {
1324                 FLAC__byte *b = (FLAC__byte *)&val, tmp;
1325                 tmp = b[0]; b[0] = b[1]; b[1] = tmp;
1326         }
1327         return fwrite(&val, 1, 2, f) == 2;
1328 }
1329
1330 FLAC__bool write_big_endian_uint64(FILE *f, FLAC__uint64 val)
1331 {
1332         if(!is_big_endian_host) {
1333                 FLAC__byte *b = (FLAC__byte *)&val, tmp;
1334                 tmp = b[0]; b[0] = b[7]; b[7] = tmp;
1335                 tmp = b[1]; b[1] = b[6]; b[6] = tmp;
1336                 tmp = b[2]; b[2] = b[5]; b[5] = tmp;
1337                 tmp = b[3]; b[3] = b[4]; b[4] = tmp;
1338         }
1339         return fwrite(&val, 1, 8, f) == 8;
1340 }