src/flac/encode.c

   1 /* flac - Command-line FLAC encoder/decoder
   2  * Copyright (C) 2000,2001,2002  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 #ifdef FLAC__HAS_OGG
  92         FLAC__bool use_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 && x != 24) {
 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(fseek(infile, bytes_per_wide_sample * (unsigned)options.common.skip, SEEK_CUR) < 0) {
 278                                                 /* can't seek input, read ahead manually... */
 279                                                 unsigned left, need;
 280                                                 for(left = (unsigned)options.common.skip; left > 0; ) { /*@@@ WATCHOUT: 4GB limit */
 281                                                         need = min(left, CHUNK_OF_SAMPLES);
 282                                                         if(fread(ucbuffer, bytes_per_wide_sample, need, infile) < need) {
 283                                                                 fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_wrapper.inbasefilename);
 284                                                                 goto wav_abort_;
 285                                                         }
 286                                                         left -= need;
 287                                                 }
 288                                         }
 289                                 }
 290
 291                                 data_bytes -= (unsigned)options.common.skip * bytes_per_wide_sample; /*@@@ WATCHOUT: 4GB limit */
 292                                 encoder_wrapper.total_samples_to_encode = data_bytes / bytes_per_wide_sample + *options.align_reservoir_samples;
 293                                 if(options.sector_align) {
 294                                         align_remainder = (unsigned)(encoder_wrapper.total_samples_to_encode % 588);
 295                                         if(options.is_last_file)
 296                                                 encoder_wrapper.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
 297                                         else
 298                                                 encoder_wrapper.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
 299                                 }
 300
 301                                 /* +44 for the size of the WAV headers; this is just an estimate for the progress indicator and doesn't need to be exact */
 302                                 encoder_wrapper.unencoded_size = encoder_wrapper.total_samples_to_encode * bytes_per_wide_sample + 44;
 303
 304                                 if(!init_encoder(options.common, channels, bps, sample_rate, &encoder_wrapper))
 305                                         goto wav_abort_;
 306
 307                                 encoder_wrapper.verify_fifo.into_frames = true;
 308
 309                                 /*
 310                                  * first do any samples in the reservoir
 311                                  */
 312                                 if(options.sector_align && *options.align_reservoir_samples > 0) {
 313                                         /* 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: */
 314                                         append_to_verify_fifo(&encoder_wrapper, options.align_reservoir, channels, *options.align_reservoir_samples);
 315
 316                                         /* 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: */
 317                                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, options.align_reservoir, *options.align_reservoir_samples)) {
 318                                                 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)]);
 319                                                 goto wav_abort_;
 320                                         }
 321                                 }
 322
 323                                 /*
 324                                  * decrement the data_bytes counter if we need to align the file
 325                                  */
 326                                 if(options.sector_align) {
 327                                         if(options.is_last_file) {
 328                                                 *options.align_reservoir_samples = 0;
 329                                         }
 330                                         else {
 331                                                 *options.align_reservoir_samples = align_remainder;
 332                                                 data_bytes -= (*options.align_reservoir_samples) * bytes_per_wide_sample;
 333                                         }
 334                                 }
 335
 336                                 /*
 337                                  * now do from the file
 338                                  */
 339                                 while(data_bytes > 0) {
 340                                         bytes_read = fread(ucbuffer, sizeof(unsigned char), min(data_bytes, CHUNK_OF_SAMPLES * bytes_per_wide_sample), infile);
 341                                         if(bytes_read == 0) {
 342                                                 if(ferror(infile)) {
 343                                                         fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 344                                                         goto wav_abort_;
 345                                                 }
 346                                                 else if(feof(infile)) {
 347                                                         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);
 348                                                         data_bytes = 0;
 349                                                 }
 350                                         }
 351                                         else {
 352                                                 if(bytes_read % bytes_per_wide_sample != 0) {
 353                                                         fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_wrapper.inbasefilename);
 354                                                         goto wav_abort_;
 355                                                 }
 356                                                 else {
 357                                                         unsigned wide_samples = bytes_read / bytes_per_wide_sample;
 358                                                         format_input(input, wide_samples, false, is_unsigned_samples, channels, bps, &encoder_wrapper);
 359
 360                                                         /* 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: */
 361                                                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, input, wide_samples)) {
 362                                                                 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)]);
 363                                                                 goto wav_abort_;
 364                                                         }
 365                                                         data_bytes -= bytes_read;
 366                                                 }
 367                                         }
 368                                 }
 369
 370                                 /*
 371                                  * now read unaligned samples into reservoir or pad with zeroes if necessary
 372                                  */
 373                                 if(options.sector_align) {
 374                                         if(options.is_last_file) {
 375                                                 unsigned wide_samples = 588 - align_remainder;
 376                                                 if(wide_samples < 588) {
 377                                                         unsigned channel;
 378
 379                                                         info_align_zero = wide_samples;
 380                                                         data_bytes = wide_samples * bytes_per_wide_sample;
 381                                                         for(channel = 0; channel < channels; channel++)
 382                                                                 memset(input[channel], 0, data_bytes);
 383                                                         /* 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: */
 384                                                         append_to_verify_fifo(&encoder_wrapper, input, channels, wide_samples);
 385
 386                                                         /* 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: */
 387                                                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, input, wide_samples)) {
 388                                                                 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)]);
 389                                                                 goto wav_abort_;
 390                                                         }
 391                                                 }
 392                                         }
 393                                         else {
 394                                                 if(*options.align_reservoir_samples > 0) {
 395                                                         FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
 396                                                         bytes_read = fread(ucbuffer, sizeof(unsigned char), (*options.align_reservoir_samples) * bytes_per_wide_sample, infile);
 397                                                         if(bytes_read == 0 && ferror(infile)) {
 398                                                                 fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 399                                                                 goto wav_abort_;
 400                                                         }
 401                                                         else if(bytes_read != (*options.align_reservoir_samples) * bytes_per_wide_sample) {
 402                                                                 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);
 403                                                                 data_bytes = 0;
 404                                                         }
 405                                                         else {
 406                                                                 info_align_carry = *options.align_reservoir_samples;
 407                                                                 format_input(options.align_reservoir, *options.align_reservoir_samples, false, is_unsigned_samples, channels, bps, &encoder_wrapper);
 408                                                         }
 409                                                 }
 410                                         }
 411                                 }
 412
 413                                 got_data_chunk = true;
 414                         }
 415                 }
 416                 else {
 417                         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));
 418                         /* sub-chunk size */
 419                         if(!read_little_endian_uint32(infile, &xx, false, encoder_wrapper.inbasefilename))
 420                                 goto wav_abort_;
 421                         if(fseek(infile, xx, SEEK_CUR) < 0) {
 422                                 /* can't seek input, read ahead manually... */
 423                                 unsigned left, need;
 424                                 const unsigned chunk = sizeof(ucbuffer);
 425                                 for(left = xx; left > 0; ) {
 426                                         need = min(left, chunk);
 427                                         if(fread(ucbuffer, 1, need, infile) < need) {
 428                                                 fprintf(stderr, "%s: ERROR during read while skipping unsupported sub-chunk\n", encoder_wrapper.inbasefilename);
 429                                                 goto wav_abort_;
 430                                         }
 431                                         left -= need;
 432                                 }
 433                         }
 434                 }
 435         }
 436
 437         if(encoder_wrapper.encoder) {
 438                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 439                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 440                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 441 #ifdef FLAC__HAS_OGG
 442                 if(encoder_wrapper.use_ogg)
 443                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 444 #endif
 445         }
 446         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0) {
 447                 print_stats(&encoder_wrapper);
 448                 fprintf(stderr, "\n");
 449         }
 450         if(0 != encoder_wrapper.seek_table.points)
 451                 free(encoder_wrapper.seek_table.points);
 452         if(options.common.verify) {
 453                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 454                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 455                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 456                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 457                         return 1;
 458                 }
 459         }
 460         if(info_align_carry >= 0)
 461                 fprintf(stderr, "%s: INFO: sector alignment causing %d samples to be carried over\n", encoder_wrapper.inbasefilename, info_align_carry);
 462         if(info_align_zero >= 0)
 463                 fprintf(stderr, "%s: INFO: sector alignment causing %d zero samples to be appended\n", encoder_wrapper.inbasefilename, info_align_zero);
 464         if(infile != stdin)
 465                 fclose(infile);
 466         return 0;
 467 wav_abort_:
 468         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0)
 469                 fprintf(stderr, "\n");
 470         if(encoder_wrapper.encoder) {
 471                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 472                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 473                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 474 #ifdef FLAC__HAS_OGG
 475                 if(encoder_wrapper.use_ogg)
 476                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 477 #endif
 478         }
 479         if(0 != encoder_wrapper.seek_table.points)
 480                 free(encoder_wrapper.seek_table.points);
 481         if(options.common.verify) {
 482                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 483                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 484                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 485                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 486                         return 1;
 487                 }
 488         }
 489         if(infile != stdin)
 490                 fclose(infile);
 491         unlink(outfilename);
 492         return 1;
 493 }
 494
 495 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)
 496 {
 497         encoder_wrapper_struct encoder_wrapper;
 498         size_t bytes_read;
 499         const size_t bytes_per_wide_sample = options.channels * (options.bps >> 3);
 500
 501         encoder_wrapper.encoder = 0;
 502         encoder_wrapper.verify = options.common.verify;
 503         encoder_wrapper.verbose = options.common.verbose;
 504         encoder_wrapper.bytes_written = 0;
 505         encoder_wrapper.samples_written = 0;
 506         encoder_wrapper.stream_offset = 0;
 507         encoder_wrapper.inbasefilename = flac__file_get_basename(infilename);
 508         encoder_wrapper.outfilename = outfilename;
 509         encoder_wrapper.seek_table.points = 0;
 510         encoder_wrapper.first_seek_point_to_check = 0;
 511 #ifdef FLAC__HAS_OGG
 512         encoder_wrapper.use_ogg = options.common.use_ogg;
 513 #endif
 514
 515         if(0 == strcmp(outfilename, "-")) {
 516                 encoder_wrapper.fout = stdout;
 517         }
 518         else {
 519                 if(0 == (encoder_wrapper.fout = fopen(outfilename, "wb"))) {
 520                         fprintf(stderr, "ERROR: can't open output file %s\n", outfilename);
 521                         fclose(infile);
 522                         return 1;
 523                 }
 524         }
 525
 526         if(!init(&encoder_wrapper))
 527                 goto raw_abort_;
 528
 529         /* get the file length */
 530         if(infilesize < 0) {
 531                 encoder_wrapper.total_samples_to_encode = encoder_wrapper.unencoded_size = 0;
 532         }
 533         else {
 534                 encoder_wrapper.total_samples_to_encode = (unsigned)infilesize / bytes_per_wide_sample - options.common.skip;
 535                 encoder_wrapper.unencoded_size = encoder_wrapper.total_samples_to_encode * bytes_per_wide_sample;
 536         }
 537
 538         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode <= 0)
 539                 fprintf(stderr, "(No runtime statistics possible; please wait for encoding to finish...)\n");
 540
 541         if(options.common.skip > 0) {
 542                 unsigned skip_bytes = bytes_per_wide_sample * (unsigned)options.common.skip;
 543                 if(skip_bytes > lookahead_length) {
 544                         skip_bytes -= lookahead_length;
 545                         lookahead_length = 0;
 546                         if(fseek(infile, (long)skip_bytes, SEEK_CUR) < 0) {
 547                                 /* can't seek input, read ahead manually... */
 548                                 unsigned left, need;
 549                                 const unsigned chunk = sizeof(ucbuffer);
 550                                 for(left = skip_bytes; left > 0; ) {
 551                                         need = min(left, chunk);
 552                                         if(fread(ucbuffer, 1, need, infile) < need) {
 553                                                 fprintf(stderr, "%s: ERROR during read while skipping samples\n", encoder_wrapper.inbasefilename);
 554                                                 goto raw_abort_;
 555                                         }
 556                                         left -= need;
 557                                 }
 558                         }
 559                 }
 560                 else {
 561                         lookahead += skip_bytes;
 562                         lookahead_length -= skip_bytes;
 563                 }
 564         }
 565
 566         if(!init_encoder(options.common, options.channels, options.bps, options.sample_rate, &encoder_wrapper))
 567                 goto raw_abort_;
 568
 569         encoder_wrapper.verify_fifo.into_frames = true;
 570
 571         while(!feof(infile)) {
 572                 if(lookahead_length > 0) {
 573                         FLAC__ASSERT(lookahead_length < CHUNK_OF_SAMPLES * bytes_per_wide_sample);
 574                         memcpy(ucbuffer, lookahead, lookahead_length);
 575                         bytes_read = fread(ucbuffer+lookahead_length, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample - lookahead_length, infile) + lookahead_length;
 576                         if(ferror(infile)) {
 577                                 fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 578                                 goto raw_abort_;
 579                         }
 580                         lookahead_length = 0;
 581                 }
 582                 else
 583                         bytes_read = fread(ucbuffer, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample, infile);
 584
 585                 if(bytes_read == 0) {
 586                         if(ferror(infile)) {
 587                                 fprintf(stderr, "%s: ERROR during read\n", encoder_wrapper.inbasefilename);
 588                                 goto raw_abort_;
 589                         }
 590                 }
 591                 else if(bytes_read % bytes_per_wide_sample != 0) {
 592                         fprintf(stderr, "%s: ERROR: got partial sample\n", encoder_wrapper.inbasefilename);
 593                         goto raw_abort_;
 594                 }
 595                 else {
 596                         unsigned wide_samples = bytes_read / bytes_per_wide_sample;
 597                         format_input(input, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps, &encoder_wrapper);
 598
 599                         /* 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: */
 600                         if(!FLAC__stream_encoder_process(encoder_wrapper.encoder, input, wide_samples)) {
 601                                 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)]);
 602                                 goto raw_abort_;
 603                         }
 604                 }
 605         }
 606
 607         if(encoder_wrapper.encoder) {
 608                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 609                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 610                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 611 #ifdef FLAC__HAS_OGG
 612                 if(encoder_wrapper.use_ogg)
 613                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 614 #endif
 615         }
 616         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0) {
 617                 print_stats(&encoder_wrapper);
 618                 fprintf(stderr, "\n");
 619         }
 620         if(0 != encoder_wrapper.seek_table.points)
 621                 free(encoder_wrapper.seek_table.points);
 622         if(options.common.verify) {
 623                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 624                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 625                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 626                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 627                         return 1;
 628                 }
 629         }
 630         if(infile != stdin)
 631                 fclose(infile);
 632         return 0;
 633 raw_abort_:
 634         if(encoder_wrapper.verbose && encoder_wrapper.total_samples_to_encode > 0)
 635                 fprintf(stderr, "\n");
 636         if(encoder_wrapper.encoder) {
 637                 if(FLAC__stream_encoder_get_state(encoder_wrapper.encoder) == FLAC__STREAM_ENCODER_OK)
 638                         FLAC__stream_encoder_finish(encoder_wrapper.encoder);
 639                 FLAC__stream_encoder_delete(encoder_wrapper.encoder);
 640 #ifdef FLAC__HAS_OGG
 641                 if(encoder_wrapper.use_ogg)
 642                         ogg_stream_clear(&encoder_wrapper.ogg.os);
 643 #endif
 644         }
 645         if(0 != encoder_wrapper.seek_table.points)
 646                 free(encoder_wrapper.seek_table.points);
 647         if(options.common.verify) {
 648                 FLAC__stream_decoder_finish(encoder_wrapper.verify_fifo.decoder);
 649                 FLAC__stream_decoder_delete(encoder_wrapper.verify_fifo.decoder);
 650                 if(encoder_wrapper.verify_fifo.result != FLAC__VERIFY_OK) {
 651                         fprintf(stderr, "Verify FAILED! (%s)  Do not trust %s\n", verify_code_string[encoder_wrapper.verify_fifo.result], outfilename);
 652                         return 1;
 653                 }
 654         }
 655         if(infile != stdin)
 656                 fclose(infile);
 657         unlink(outfilename);
 658         return 1;
 659 }
 660
 661 FLAC__bool init(encoder_wrapper_struct *encoder_wrapper)
 662 {
 663         unsigned i;
 664         FLAC__uint32 test = 1;
 665
 666         is_big_endian_host = (*((FLAC__byte*)(&test)))? false : true;
 667
 668         for(i = 0; i < FLAC__MAX_CHANNELS; i++)
 669                 input[i] = &(in[i][0]);
 670
 671         encoder_wrapper->encoder = FLAC__stream_encoder_new();
 672         if(0 == encoder_wrapper->encoder) {
 673                 fprintf(stderr, "%s: ERROR creating the encoder instance\n", encoder_wrapper->inbasefilename);
 674                 return false;
 675         }
 676
 677 #ifdef FLAC__HAS_OGG
 678         if(encoder_wrapper->use_ogg) {
 679                 if(ogg_stream_init(&encoder_wrapper->ogg.os, 0) != 0) {
 680                         fprintf(stderr, "%s: ERROR initializing the Ogg stream\n", encoder_wrapper->inbasefilename);
 681                         FLAC__stream_encoder_delete(encoder_wrapper->encoder);
 682                         return false;
 683                 }
 684         }
 685 #endif
 686
 687         return true;
 688 }
 689
 690 FLAC__bool init_encoder(encode_options_t options, unsigned channels, unsigned bps, unsigned sample_rate, encoder_wrapper_struct *encoder_wrapper)
 691 {
 692         unsigned i;
 693
 694         if(channels != 2)
 695                 options.do_mid_side = options.loose_mid_side = false;
 696
 697         if(encoder_wrapper->verify) {
 698                 /* set up the fifo which will hold the original signal to compare against */
 699                 encoder_wrapper->verify_fifo.size = options.blocksize + CHUNK_OF_SAMPLES;
 700                 for(i = 0; i < channels; i++) {
 701                         if(0 == (encoder_wrapper->verify_fifo.original[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder_wrapper->verify_fifo.size))) {
 702                                 fprintf(stderr, "%s: ERROR allocating verify buffers\n", encoder_wrapper->inbasefilename);
 703                                 return false;
 704                         }
 705                 }
 706                 encoder_wrapper->verify_fifo.tail = 0;
 707                 encoder_wrapper->verify_fifo.into_frames = false;
 708                 encoder_wrapper->verify_fifo.result = FLAC__VERIFY_OK;
 709
 710                 /* set up a stream decoder for verification */
 711                 encoder_wrapper->verify_fifo.decoder = FLAC__stream_decoder_new();
 712                 if(0 == encoder_wrapper->verify_fifo.decoder) {
 713                         fprintf(stderr, "%s: ERROR creating the verify decoder instance\n", encoder_wrapper->inbasefilename);
 714                         return false;
 715                 }
 716                 FLAC__stream_decoder_set_read_callback(encoder_wrapper->verify_fifo.decoder, verify_read_callback);
 717                 FLAC__stream_decoder_set_write_callback(encoder_wrapper->verify_fifo.decoder, verify_write_callback);
 718                 FLAC__stream_decoder_set_metadata_callback(encoder_wrapper->verify_fifo.decoder, verify_metadata_callback);
 719                 FLAC__stream_decoder_set_error_callback(encoder_wrapper->verify_fifo.decoder, verify_error_callback);
 720                 FLAC__stream_decoder_set_client_data(encoder_wrapper->verify_fifo.decoder, encoder_wrapper);
 721                 if(FLAC__stream_decoder_init(encoder_wrapper->verify_fifo.decoder) != FLAC__STREAM_DECODER_SEARCH_FOR_METADATA) {
 722                         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)]);
 723                         return false;
 724                 }
 725         }
 726
 727         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)) {
 728                 fprintf(stderr, "%s: ERROR allocating seek table\n", encoder_wrapper->inbasefilename);
 729                 return false;
 730         }
 731
 732         FLAC__stream_encoder_set_streamable_subset(encoder_wrapper->encoder, !options.lax);
 733         FLAC__stream_encoder_set_do_mid_side_stereo(encoder_wrapper->encoder, options.do_mid_side);
 734         FLAC__stream_encoder_set_loose_mid_side_stereo(encoder_wrapper->encoder, options.loose_mid_side);
 735         FLAC__stream_encoder_set_channels(encoder_wrapper->encoder, channels);
 736         FLAC__stream_encoder_set_bits_per_sample(encoder_wrapper->encoder, bps);
 737         FLAC__stream_encoder_set_sample_rate(encoder_wrapper->encoder, sample_rate);
 738         FLAC__stream_encoder_set_blocksize(encoder_wrapper->encoder, options.blocksize);
 739         FLAC__stream_encoder_set_max_lpc_order(encoder_wrapper->encoder, options.max_lpc_order);
 740         FLAC__stream_encoder_set_qlp_coeff_precision(encoder_wrapper->encoder, options.qlp_coeff_precision);
 741         FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder_wrapper->encoder, options.do_qlp_coeff_prec_search);
 742         FLAC__stream_encoder_set_do_escape_coding(encoder_wrapper->encoder, options.do_escape_coding);
 743         FLAC__stream_encoder_set_do_exhaustive_model_search(encoder_wrapper->encoder, options.do_exhaustive_model_search);
 744         FLAC__stream_encoder_set_min_residual_partition_order(encoder_wrapper->encoder, options.min_residual_partition_order);
 745         FLAC__stream_encoder_set_max_residual_partition_order(encoder_wrapper->encoder, options.max_residual_partition_order);
 746         FLAC__stream_encoder_set_rice_parameter_search_dist(encoder_wrapper->encoder, options.rice_parameter_search_dist);
 747         FLAC__stream_encoder_set_total_samples_estimate(encoder_wrapper->encoder, encoder_wrapper->total_samples_to_encode);
 748         FLAC__stream_encoder_set_seek_table(encoder_wrapper->encoder, (encoder_wrapper->seek_table.num_points > 0)? &encoder_wrapper->seek_table : 0);
 749         FLAC__stream_encoder_set_padding(encoder_wrapper->encoder, options.padding);
 750         FLAC__stream_encoder_set_last_metadata_is_last(encoder_wrapper->encoder, true);
 751         FLAC__stream_encoder_set_write_callback(encoder_wrapper->encoder, write_callback);
 752         FLAC__stream_encoder_set_metadata_callback(encoder_wrapper->encoder, metadata_callback);
 753         FLAC__stream_encoder_set_client_data(encoder_wrapper->encoder, encoder_wrapper);
 754
 755         if(FLAC__stream_encoder_init(encoder_wrapper->encoder) != FLAC__STREAM_ENCODER_OK) {
 756                 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)]);
 757                 return false;
 758         }
 759
 760         /* the above call writes all the metadata, so we save the stream offset now */
 761         encoder_wrapper->stream_offset = encoder_wrapper->bytes_written;
 762
 763         return true;
 764 }
 765
 766 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)
 767 {
 768         unsigned i, j, real_points, placeholders;
 769         char *pt = requested_seek_points, *q;
 770         FLAC__bool first;
 771
 772         seek_table->num_points = 0;
 773
 774         if(num_requested_seek_points == 0)
 775                 return true;
 776
 777         if(num_requested_seek_points < 0) {
 778                 strcpy(requested_seek_points, "100x<");
 779                 num_requested_seek_points = 1;
 780         }
 781
 782         /* first count how many individual seek point we may need */
 783         real_points = placeholders = 0;
 784         for(i = 0; i < (unsigned)num_requested_seek_points; i++) {
 785                 q = strchr(pt, '<');
 786                 FLAC__ASSERT(0 != q);
 787                 *q = '\0';
 788
 789                 if(0 == strcmp(pt, "X")) { /* -S X */
 790                         placeholders++;
 791                 }
 792                 else if(pt[strlen(pt)-1] == 'x') { /* -S #x */
 793                         if(stream_samples > 0) /* we can only do these if we know the number of samples to encode up front */
 794                                 real_points += (unsigned)atoi(pt);
 795                 }
 796                 else { /* -S # */
 797                         real_points++;
 798                 }
 799                 *q++ = '<';
 800
 801                 pt = q;
 802         }
 803         pt = requested_seek_points;
 804
 805         /* make some space */
 806         if(0 == (seek_table->points = (FLAC__StreamMetaData_SeekPoint*)malloc(sizeof(FLAC__StreamMetaData_SeekPoint) * (real_points+placeholders))))
 807                 return false;
 808
 809         /* initialize the seek_table.  we set frame_samples to zero to signify the points have not yet been hit by a frame write yet. */
 810         for(i = 0; i < real_points+placeholders; i++) {
 811                 seek_table->points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
 812                 seek_table->points[i].stream_offset = 0;
 813                 seek_table->points[i].frame_samples = 0;
 814         }
 815
 816         for(i = 0; i < (unsigned)num_requested_seek_points; i++) {
 817                 q = strchr(pt, '<');
 818                 FLAC__ASSERT(0 != q);
 819                 *q++ = '\0';
 820
 821                 if(0 == strcmp(pt, "X")) { /* -S X */
 822                         ; /* we append placeholders later */
 823                 }
 824                 else if(pt[strlen(pt)-1] == 'x') { /* -S #x */
 825                         if(stream_samples > 0) { /* we can only do these if we know the number of samples to encode up front */
 826                                 unsigned j, n;
 827                                 n = (unsigned)atoi(pt);
 828                                 for(j = 0; j < n; j++)
 829                                         append_point_to_seek_table(seek_table, stream_samples * (FLAC__uint64)j / (FLAC__uint64)n, stream_samples, blocksize);
 830                         }
 831                 }
 832                 else { /* -S # */
 833                         append_point_to_seek_table(seek_table, (FLAC__uint64)atoi(pt), stream_samples, blocksize);
 834                 }
 835
 836                 pt = q;
 837         }
 838
 839         /* sort the seekpoints */
 840         qsort(seek_table->points, seek_table->num_points, sizeof(FLAC__StreamMetaData_SeekPoint), (int (*)(const void *, const void *))seekpoint_compare);
 841
 842         /* uniqify the seekpoints */
 843         first = true;
 844         for(i = j = 0; i < seek_table->num_points; i++) {
 845                 if(!first) {
 846                         if(seek_table->points[i].sample_number == seek_table->points[j-1].sample_number)
 847                                 continue;
 848                 }
 849                 first = false;
 850                 seek_table->points[j++] = seek_table->points[i];
 851         }
 852         seek_table->num_points = j;
 853
 854         /* append placeholders */
 855         for(i = 0, j = seek_table->num_points; i < placeholders; i++, j++)
 856                 seek_table->points[j].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
 857         seek_table->num_points += placeholders;
 858
 859         return true;
 860 }
 861
 862 void append_point_to_seek_table(FLAC__StreamMetaData_SeekTable *seek_table, FLAC__uint64 sample, FLAC__uint64 stream_samples, FLAC__uint64 blocksize)
 863 {
 864         const FLAC__uint64 target_sample = (sample / blocksize) * blocksize;
 865
 866         if(stream_samples == 0 || target_sample < stream_samples)
 867                 seek_table->points[seek_table->num_points++].sample_number = target_sample;
 868 }
 869
 870 int seekpoint_compare(const FLAC__StreamMetaData_SeekPoint *l, const FLAC__StreamMetaData_SeekPoint *r)
 871 {
 872         /* we don't just 'return l->sample_number - r->sample_number' since the result (FLAC__int64) might overflow an 'int' */
 873         if(l->sample_number == r->sample_number)
 874                 return 0;
 875         else if(l->sample_number < r->sample_number)
 876                 return -1;
 877         else
 878                 return 1;
 879 }
 880
 881 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)
 882 {
 883         unsigned wide_sample, sample, channel, byte;
 884
 885         if(bps == 8) {
 886                 if(is_unsigned_samples) {
 887                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 888                                 for(channel = 0; channel < channels; channel++, sample++)
 889                                         dest[channel][wide_sample] = (FLAC__int32)ucbuffer[sample] - 0x80;
 890                 }
 891                 else {
 892                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 893                                 for(channel = 0; channel < channels; channel++, sample++)
 894                                         dest[channel][wide_sample] = (FLAC__int32)scbuffer[sample];
 895                 }
 896         }
 897         else if(bps == 16) {
 898                 if(is_big_endian != is_big_endian_host) {
 899                         unsigned char tmp;
 900                         const unsigned bytes = wide_samples * channels * (bps >> 3);
 901                         for(byte = 0; byte < bytes; byte += 2) {
 902                                 tmp = ucbuffer[byte];
 903                                 ucbuffer[byte] = ucbuffer[byte+1];
 904                                 ucbuffer[byte+1] = tmp;
 905                         }
 906                 }
 907                 if(is_unsigned_samples) {
 908                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 909                                 for(channel = 0; channel < channels; channel++, sample++)
 910                                         dest[channel][wide_sample] = (FLAC__int32)usbuffer[sample] - 0x8000;
 911                 }
 912                 else {
 913                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 914                                 for(channel = 0; channel < channels; channel++, sample++)
 915                                         dest[channel][wide_sample] = (FLAC__int32)ssbuffer[sample];
 916                 }
 917         }
 918         else if(bps == 24) {
 919                 if(!is_big_endian) {
 920                         unsigned char tmp;
 921                         const unsigned bytes = wide_samples * channels * (bps >> 3);
 922                         for(byte = 0; byte < bytes; byte += 3) {
 923                                 tmp = ucbuffer[byte];
 924                                 ucbuffer[byte] = ucbuffer[byte+2];
 925                                 ucbuffer[byte+2] = tmp;
 926                         }
 927                 }
 928                 if(is_unsigned_samples) {
 929                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 930                                 for(channel = 0; channel < channels; channel++, sample++) {
 931                                         dest[channel][wide_sample]  = ucbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 932                                         dest[channel][wide_sample] |= ucbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 933                                         dest[channel][wide_sample] |= ucbuffer[byte++];
 934                                         dest[channel][wide_sample] -= 0x800000;
 935                                 }
 936                 }
 937                 else {
 938                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
 939                                 for(channel = 0; channel < channels; channel++, sample++) {
 940                                         dest[channel][wide_sample]  = scbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 941                                         dest[channel][wide_sample] |= ucbuffer[byte++]; dest[channel][wide_sample] <<= 8;
 942                                         dest[channel][wide_sample] |= ucbuffer[byte++];
 943                                 }
 944                 }
 945         }
 946         else {
 947                 FLAC__ASSERT(0);
 948         }
 949
 950         /* 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: */
 951         append_to_verify_fifo(encoder_wrapper, dest, channels, wide_samples);
 952 }
 953
 954 void append_to_verify_fifo(encoder_wrapper_struct *encoder_wrapper, const FLAC__int32 *src[], unsigned channels, unsigned wide_samples)
 955 {
 956         if(encoder_wrapper->verify) {
 957                 unsigned channel;
 958                 for(channel = 0; channel < channels; channel++)
 959                         memcpy(&encoder_wrapper->verify_fifo.original[channel][encoder_wrapper->verify_fifo.tail], src[channel], sizeof(FLAC__int32) * wide_samples);
 960                 encoder_wrapper->verify_fifo.tail += wide_samples;
 961                 FLAC__ASSERT(encoder_wrapper->verify_fifo.tail <= encoder_wrapper->verify_fifo.size);
 962         }
 963 }
 964
 965 FLAC__StreamEncoderWriteStatus write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
 966 {
 967         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
 968         const unsigned mask = (FLAC__stream_encoder_get_do_exhaustive_model_search(encoder) || FLAC__stream_encoder_get_do_qlp_coeff_prec_search(encoder))? 0x1f : 0x7f;
 969
 970         /* 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) */
 971         if(encoder_wrapper->stream_offset > 0 && encoder_wrapper->seek_table.num_points > 0) {
 972                 FLAC__uint64 current_sample = (FLAC__uint64)current_frame * (FLAC__uint64)FLAC__stream_encoder_get_blocksize(encoder), test_sample;
 973                 unsigned i;
 974                 for(i = encoder_wrapper->first_seek_point_to_check; i < encoder_wrapper->seek_table.num_points; i++) {
 975                         test_sample = encoder_wrapper->seek_table.points[i].sample_number;
 976                         if(test_sample > current_sample) {
 977                                 break;
 978                         }
 979                         else if(test_sample == current_sample) {
 980                                 encoder_wrapper->seek_table.points[i].stream_offset = encoder_wrapper->bytes_written - encoder_wrapper->stream_offset;
 981                                 encoder_wrapper->seek_table.points[i].frame_samples = FLAC__stream_encoder_get_blocksize(encoder);
 982                                 encoder_wrapper->first_seek_point_to_check++;
 983                                 break;
 984                         }
 985                         else {
 986                                 encoder_wrapper->first_seek_point_to_check++;
 987                         }
 988                 }
 989         }
 990
 991         encoder_wrapper->bytes_written += bytes;
 992         encoder_wrapper->samples_written += samples;
 993         encoder_wrapper->current_frame = current_frame;
 994
 995         if(samples && encoder_wrapper->verbose && encoder_wrapper->total_samples_to_encode > 0 && !(current_frame & mask))
 996                 print_stats(encoder_wrapper);
 997
 998         if(encoder_wrapper->verify) {
 999                 encoder_wrapper->verify_fifo.encoded_signal = buffer;
1000                 encoder_wrapper->verify_fifo.encoded_bytes = bytes;
1001                 if(encoder_wrapper->verify_fifo.into_frames) {
1002                         if(!FLAC__stream_decoder_process_one_frame(encoder_wrapper->verify_fifo.decoder)) {
1003                                 encoder_wrapper->verify_fifo.result = FLAC__VERIFY_FAILED_IN_FRAME;
1004                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1005                         }
1006                 }
1007                 else {
1008                         if(!FLAC__stream_decoder_process_metadata(encoder_wrapper->verify_fifo.decoder)) {
1009                                 encoder_wrapper->verify_fifo.result = FLAC__VERIFY_FAILED_IN_METADATA;
1010                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1011                         }
1012                 }
1013         }
1014
1015 #ifdef FLAC__HAS_OGG
1016         if(encoder_wrapper->use_ogg) {
1017                 ogg_packet op;
1018
1019                 memset(&op, 0, sizeof(op));
1020                 op.packet = (unsigned char *)buffer;
1021                 op.granulepos = encoder_wrapper->samples_written - 1;
1022                 /*@@@ WATCHOUT:
1023                  * this depends on the behavior of libFLAC that we will get one
1024                  * write_callback first with all the metadata (and 'samples'
1025                  * will be 0), then one write_callback for each frame.
1026                  */
1027                 op.packetno = (samples == 0? -1 : (int)encoder_wrapper->current_frame);
1028                 op.bytes = bytes;
1029
1030                 if (encoder_wrapper->bytes_written == bytes)
1031                         op.b_o_s = 1;
1032
1033                 if (encoder_wrapper->total_samples_to_encode == encoder_wrapper->samples_written)
1034                         op.e_o_s = 1;
1035
1036                 ogg_stream_packetin(&encoder_wrapper->ogg.os, &op);
1037
1038                 while(ogg_stream_pageout(&encoder_wrapper->ogg.os, &encoder_wrapper->ogg.og) != 0) {
1039                         int written;
1040                         written = fwrite(encoder_wrapper->ogg.og.header, 1, encoder_wrapper->ogg.og.header_len, encoder_wrapper->fout);
1041                         if (written != encoder_wrapper->ogg.og.header_len)
1042                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1043
1044                         written = fwrite(encoder_wrapper->ogg.og.body, 1, encoder_wrapper->ogg.og.body_len, encoder_wrapper->fout);
1045                         if (written != encoder_wrapper->ogg.og.body_len)
1046                                 return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1047                 }
1048
1049                 return FLAC__STREAM_ENCODER_WRITE_OK;
1050         }
1051         else
1052 #endif
1053         {
1054                 if(fwrite(buffer, sizeof(FLAC__byte), bytes, encoder_wrapper->fout) == bytes)
1055                         return FLAC__STREAM_ENCODER_WRITE_OK;
1056                 else
1057                         return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
1058         }
1059 }
1060
1061 void metadata_callback(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetaData *metadata, void *client_data)
1062 {
1063         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1064         FLAC__byte b;
1065         FILE *f;
1066         const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
1067         const unsigned min_framesize = metadata->data.stream_info.min_framesize;
1068         const unsigned max_framesize = metadata->data.stream_info.max_framesize;
1069
1070         FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
1071
1072         /*
1073          * If we are writing to an ogg stream, there is no need to go back
1074          * and update the STREAMINFO or SEEKTABLE blocks; the values we would
1075          * update are not necessary with Ogg as the transport.  We can't do
1076          * it reliably anyway without knowing the Ogg structure.
1077          */
1078 #ifdef FLAC__HAS_OGG
1079         if(encoder_wrapper->use_ogg)
1080                 return;
1081 #endif
1082
1083         /*
1084          * we get called by the encoder when the encoding process has
1085          * finished so that we can update the STREAMINFO and SEEKTABLE
1086          * blocks.
1087          */
1088
1089         (void)encoder; /* silence compiler warning about unused parameter */
1090
1091         if(encoder_wrapper->fout != stdout) {
1092                 fclose(encoder_wrapper->fout);
1093                 if(0 == (f = fopen(encoder_wrapper->outfilename, "r+b")))
1094                         return;
1095         }
1096         else
1097                 f = stdout;
1098
1099         /* all this is based on intimate knowledge of the stream header
1100          * layout, but a change to the header format that would break this
1101          * would also break all streams encoded in the previous format.
1102          */
1103
1104         if(-1 == fseek(f, 26, SEEK_SET)) goto end_;
1105         fwrite(metadata->data.stream_info.md5sum, 1, 16, f);
1106
1107 samples_:
1108         /* if we get this far we know we can seek so no need to check the
1109          * return value from fseek()
1110          */
1111         fseek(f, 21, SEEK_SET);
1112         if(fread(&b, 1, 1, f) != 1) goto framesize_;
1113         fseek(f, 21, SEEK_SET);
1114         b = (b & 0xf0) | (FLAC__byte)((samples >> 32) & 0x0F);
1115         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1116         b = (FLAC__byte)((samples >> 24) & 0xFF);
1117         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1118         b = (FLAC__byte)((samples >> 16) & 0xFF);
1119         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1120         b = (FLAC__byte)((samples >> 8) & 0xFF);
1121         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1122         b = (FLAC__byte)(samples & 0xFF);
1123         if(fwrite(&b, 1, 1, f) != 1) goto framesize_;
1124
1125 framesize_:
1126         fseek(f, 12, SEEK_SET);
1127         b = (FLAC__byte)((min_framesize >> 16) & 0xFF);
1128         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1129         b = (FLAC__byte)((min_framesize >> 8) & 0xFF);
1130         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1131         b = (FLAC__byte)(min_framesize & 0xFF);
1132         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1133         b = (FLAC__byte)((max_framesize >> 16) & 0xFF);
1134         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1135         b = (FLAC__byte)((max_framesize >> 8) & 0xFF);
1136         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1137         b = (FLAC__byte)(max_framesize & 0xFF);
1138         if(fwrite(&b, 1, 1, f) != 1) goto seektable_;
1139
1140 seektable_:
1141         if(encoder_wrapper->seek_table.num_points > 0) {
1142                 long pos;
1143                 unsigned i;
1144
1145                 /* convert any unused seek points to placeholders */
1146                 for(i = 0; i < encoder_wrapper->seek_table.num_points; i++) {
1147                         if(encoder_wrapper->seek_table.points[i].sample_number == FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER)
1148                                 break;
1149                         else if(encoder_wrapper->seek_table.points[i].frame_samples == 0)
1150                                 encoder_wrapper->seek_table.points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
1151                 }
1152
1153                 /* the offset of the seek table data 'pos' should be after then stream sync and STREAMINFO block and SEEKTABLE header */
1154                 pos = (FLAC__STREAM_SYNC_LEN + FLAC__STREAM_METADATA_IS_LAST_LEN + FLAC__STREAM_METADATA_TYPE_LEN + FLAC__STREAM_METADATA_LENGTH_LEN) / 8;
1155                 pos += metadata->length;
1156                 pos += (FLAC__STREAM_METADATA_IS_LAST_LEN + FLAC__STREAM_METADATA_TYPE_LEN + FLAC__STREAM_METADATA_LENGTH_LEN) / 8;
1157                 fseek(f, pos, SEEK_SET);
1158                 for(i = 0; i < encoder_wrapper->seek_table.num_points; i++) {
1159                         if(!write_big_endian_uint64(f, encoder_wrapper->seek_table.points[i].sample_number)) goto end_;
1160                         if(!write_big_endian_uint64(f, encoder_wrapper->seek_table.points[i].stream_offset)) goto end_;
1161                         if(!write_big_endian_uint16(f, (FLAC__uint16)encoder_wrapper->seek_table.points[i].frame_samples)) goto end_;
1162                 }
1163         }
1164
1165 end_:
1166         fclose(f);
1167         return;
1168 }
1169
1170 FLAC__StreamDecoderReadStatus verify_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
1171 {
1172         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1173         const unsigned encoded_bytes = encoder_wrapper->verify_fifo.encoded_bytes;
1174         (void)decoder;
1175
1176         if(encoded_bytes <= *bytes) {
1177                 *bytes = encoded_bytes;
1178                 memcpy(buffer, encoder_wrapper->verify_fifo.encoded_signal, *bytes);
1179         }
1180         else {
1181                 memcpy(buffer, encoder_wrapper->verify_fifo.encoded_signal, *bytes);
1182                 encoder_wrapper->verify_fifo.encoded_signal += *bytes;
1183                 encoder_wrapper->verify_fifo.encoded_bytes -= *bytes;
1184         }
1185
1186         return FLAC__STREAM_DECODER_READ_CONTINUE;
1187 }
1188
1189 FLAC__StreamDecoderWriteStatus verify_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data)
1190 {
1191         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1192         unsigned channel, l, r;
1193         const unsigned channels = FLAC__stream_decoder_get_channels(decoder);
1194         const unsigned bytes_per_block = sizeof(FLAC__int32) * FLAC__stream_decoder_get_blocksize(decoder);
1195
1196         for(channel = 0; channel < channels; channel++) {
1197                 if(0 != memcmp(buffer[channel], encoder_wrapper->verify_fifo.original[channel], bytes_per_block)) {
1198                         unsigned sample = 0;
1199                         int expect = 0, got = 0;
1200                         fprintf(stderr, "\n%s: ERROR: mismatch in decoded data, verify FAILED!\n", encoder_wrapper->inbasefilename);
1201                         fprintf(stderr, "       Please submit a bug report to\n");
1202                         fprintf(stderr, "           http://sourceforge.net/bugs/?func=addbug&group_id=13478\n");
1203                         fprintf(stderr, "       Make sure to include an email contact in the comment and/or use the\n");
1204                         fprintf(stderr, "       \"Monitor\" feature to monitor the bug status.\n");
1205                         for(l = 0, r = FLAC__stream_decoder_get_blocksize(decoder); l < r; l++) {
1206                                 if(buffer[channel][l] != encoder_wrapper->verify_fifo.original[channel][l]) {
1207                                         sample = l;
1208                                         expect = (int)encoder_wrapper->verify_fifo.original[channel][l];
1209                                         got = (int)buffer[channel][l];
1210                                         break;
1211                                 }
1212                         }
1213                         FLAC__ASSERT(l < r);
1214                         FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
1215                         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 */
1216                         return FLAC__STREAM_DECODER_WRITE_ABORT;
1217                 }
1218         }
1219         /* dequeue the frame from the fifo */
1220         for(channel = 0; channel < channels; channel++) {
1221                 for(l = 0, r = frame->header.blocksize; r < encoder_wrapper->verify_fifo.tail; l++, r++) {
1222                         encoder_wrapper->verify_fifo.original[channel][l] = encoder_wrapper->verify_fifo.original[channel][r];
1223                 }
1224         }
1225         encoder_wrapper->verify_fifo.tail -= frame->header.blocksize;
1226         return FLAC__STREAM_DECODER_WRITE_CONTINUE;
1227 }
1228
1229 void verify_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data)
1230 {
1231         (void)decoder;
1232         (void)metadata;
1233         (void)client_data;
1234 }
1235
1236 void verify_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
1237 {
1238         encoder_wrapper_struct *encoder_wrapper = (encoder_wrapper_struct *)client_data;
1239         (void)decoder;
1240         fprintf(stderr, "\n%s: ERROR: verification decoder returned error %d:%s\n", encoder_wrapper->inbasefilename, status, FLAC__StreamDecoderErrorStatusString[status]);
1241 }
1242
1243 void print_stats(const encoder_wrapper_struct *encoder_wrapper)
1244 {
1245 #if defined _MSC_VER || defined __MINGW32__
1246         /* with VC++ you have to spoon feed it the casting */
1247         const double progress = (double)(FLAC__int64)encoder_wrapper->samples_written / (double)(FLAC__int64)encoder_wrapper->total_samples_to_encode;
1248         const double ratio = (double)(FLAC__int64)encoder_wrapper->bytes_written / ((double)(FLAC__int64)encoder_wrapper->unencoded_size * progress);
1249 #else
1250         const double progress = (double)encoder_wrapper->samples_written / (double)encoder_wrapper->total_samples_to_encode;
1251         const double ratio = (double)encoder_wrapper->bytes_written / ((double)encoder_wrapper->unencoded_size * progress);
1252 #endif
1253
1254         if(encoder_wrapper->samples_written == encoder_wrapper->total_samples_to_encode) {
1255                 fprintf(stderr, "\r%s:%s wrote %u bytes, ratio=%0.3f",
1256                         encoder_wrapper->inbasefilename,
1257                         encoder_wrapper->verify? (encoder_wrapper->verify_fifo.result == FLAC__VERIFY_OK? " Verify OK," : " Verify FAILED!") : "",
1258                         (unsigned)encoder_wrapper->bytes_written,
1259                         ratio
1260                 );
1261         }
1262         else {
1263                 fprintf(stderr, "\r%s: %u%% complete, ratio=%0.3f", encoder_wrapper->inbasefilename, (unsigned)floor(progress * 100.0 + 0.5), ratio);
1264         }
1265 }
1266
1267 FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
1268 {
1269         size_t bytes_read = fread(val, 1, 2, f);
1270
1271         if(bytes_read == 0) {
1272                 if(!eof_ok) {
1273                         fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1274                         return false;
1275                 }
1276                 else
1277                         return true;
1278         }
1279         else if(bytes_read < 2) {
1280                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1281                 return false;
1282         }
1283         else {
1284                 if(is_big_endian_host) {
1285                         FLAC__byte tmp, *b = (FLAC__byte*)val;
1286                         tmp = b[1]; b[1] = b[0]; b[0] = tmp;
1287                 }
1288                 return true;
1289         }
1290 }
1291
1292 FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
1293 {
1294         size_t bytes_read = fread(val, 1, 4, f);
1295
1296         if(bytes_read == 0) {
1297                 if(!eof_ok) {
1298                         fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1299                         return false;
1300                 }
1301                 else
1302                         return true;
1303         }
1304         else if(bytes_read < 4) {
1305                 fprintf(stderr, "%s: ERROR: unexpected EOF\n", fn);
1306                 return false;
1307         }
1308         else {
1309                 if(is_big_endian_host) {
1310                         FLAC__byte tmp, *b = (FLAC__byte*)val;
1311                         tmp = b[3]; b[3] = b[0]; b[0] = tmp;
1312                         tmp = b[2]; b[2] = b[1]; b[1] = tmp;
1313                 }
1314                 return true;
1315         }
1316 }
1317
1318 FLAC__bool write_big_endian_uint16(FILE *f, FLAC__uint16 val)
1319 {
1320         if(!is_big_endian_host) {
1321                 FLAC__byte *b = (FLAC__byte *)&val, tmp;
1322                 tmp = b[0]; b[0] = b[1]; b[1] = tmp;
1323         }
1324         return fwrite(&val, 1, 2, f) == 2;
1325 }
1326
1327 FLAC__bool write_big_endian_uint64(FILE *f, FLAC__uint64 val)
1328 {
1329         if(!is_big_endian_host) {
1330                 FLAC__byte *b = (FLAC__byte *)&val, tmp;
1331                 tmp = b[0]; b[0] = b[7]; b[7] = tmp;
1332                 tmp = b[1]; b[1] = b[6]; b[6] = tmp;
1333                 tmp = b[2]; b[2] = b[5]; b[5] = tmp;
1334                 tmp = b[3]; b[3] = b[4]; b[4] = tmp;
1335         }
1336         return fwrite(&val, 1, 8, f) == 8;
1337 }