src/flac/encode.c

   1 /* flac - Command-line FLAC encoder/decoder
   2  * Copyright (C) 2000,2001,2002,2003,2004  Josh Coalson
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #if defined _WIN32 && !defined __CYGWIN__
  20 /* where MSVC puts unlink() */
  21 # include <io.h>
  22 #else
  23 # include <unistd.h>
  24 #endif
  25 #include <limits.h> /* for LONG_MAX */
  26 #include <math.h> /* for floor() */
  27 #include <stdio.h> /* for FILE etc. */
  28 #include <stdlib.h> /* for malloc */
  29 #include <string.h> /* for strcmp() */
  30 #include "FLAC/all.h"
  31 #include "share/grabbag.h"
  32 #include "encode.h"
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #ifdef FLAC__HAS_OGG
  39 #include "OggFLAC/stream_encoder.h"
  40 #include "OggFLAC/file_encoder.h"
  41 #endif
  42
  43 #ifdef min
  44 #undef min
  45 #endif
  46 #define min(x,y) ((x)<(y)?(x):(y))
  47 #ifdef max
  48 #undef max
  49 #endif
  50 #define max(x,y) ((x)>(y)?(x):(y))
  51
  52 /* this MUST be >= 588 so that sector aligning can take place with one read */
  53 #define CHUNK_OF_SAMPLES 2048
  54
  55 typedef struct {
  56 #ifdef FLAC__HAS_OGG
  57         FLAC__bool use_ogg;
  58 #endif
  59         FLAC__bool verify;
  60         FLAC__bool is_stdout;
  61         const char *inbasefilename;
  62         const char *outfilename;
  63
  64         FLAC__uint64 skip;
  65         FLAC__uint64 until; /* a value of 0 mean end-of-stream (i.e. --until=-0) */
  66         FLAC__bool replay_gain;
  67         unsigned channels;
  68         unsigned bits_per_sample;
  69         unsigned sample_rate;
  70         FLAC__uint64 unencoded_size;
  71         FLAC__uint64 total_samples_to_encode;
  72         FLAC__uint64 bytes_written;
  73         FLAC__uint64 samples_written;
  74         unsigned blocksize;
  75         unsigned stats_mask;
  76
  77         /*
  78          * We use *.stream for encoding to stdout
  79          * We use *.file for encoding to a regular file
  80          */
  81         union {
  82                 union {
  83                         FLAC__StreamEncoder *stream;
  84                         FLAC__FileEncoder *file;
  85                 } flac;
  86 #ifdef FLAC__HAS_OGG
  87                 union {
  88                         OggFLAC__StreamEncoder *stream;
  89                         OggFLAC__FileEncoder *file;
  90                 } ogg;
  91 #endif
  92         } encoder;
  93
  94         FILE *fin;
  95         FILE *fout;
  96         FLAC__StreamMetadata *seek_table_template;
  97 } EncoderSession;
  98
  99
 100 static FLAC__bool is_big_endian_host_;
 101
 102 static unsigned char ucbuffer_[CHUNK_OF_SAMPLES*FLAC__MAX_CHANNELS*((FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE+7)/8)];
 103 static signed char *scbuffer_ = (signed char *)ucbuffer_;
 104 static FLAC__uint16 *usbuffer_ = (FLAC__uint16 *)ucbuffer_;
 105 static FLAC__int16 *ssbuffer_ = (FLAC__int16 *)ucbuffer_;
 106
 107 static FLAC__int32 in_[FLAC__MAX_CHANNELS][CHUNK_OF_SAMPLES];
 108 static FLAC__int32 *input_[FLAC__MAX_CHANNELS];
 109
 110
 111 /*
 112  * unpublished debug routines from the FLAC libs
 113  */
 114 extern FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
 115 extern FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
 116 extern FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);
 117 extern FLAC__bool FLAC__file_encoder_disable_constant_subframes(FLAC__FileEncoder *encoder, FLAC__bool value);
 118 extern FLAC__bool FLAC__file_encoder_disable_fixed_subframes(FLAC__FileEncoder *encoder, FLAC__bool value);
 119 extern FLAC__bool FLAC__file_encoder_disable_verbatim_subframes(FLAC__FileEncoder *encoder, FLAC__bool value);
 120 #ifdef FLAC__HAS_OGG
 121 extern FLAC__bool OggFLAC__stream_encoder_disable_constant_subframes(OggFLAC__StreamEncoder *encoder, FLAC__bool value);
 122 extern FLAC__bool OggFLAC__stream_encoder_disable_fixed_subframes(OggFLAC__StreamEncoder *encoder, FLAC__bool value);
 123 extern FLAC__bool OggFLAC__stream_encoder_disable_verbatim_subframes(OggFLAC__StreamEncoder *encoder, FLAC__bool value);
 124 extern FLAC__bool OggFLAC__file_encoder_disable_constant_subframes(OggFLAC__FileEncoder *encoder, FLAC__bool value);
 125 extern FLAC__bool OggFLAC__file_encoder_disable_fixed_subframes(OggFLAC__FileEncoder *encoder, FLAC__bool value);
 126 extern FLAC__bool OggFLAC__file_encoder_disable_verbatim_subframes(OggFLAC__FileEncoder *encoder, FLAC__bool value);
 127 #endif
 128
 129 /*
 130  * local routines
 131  */
 132 static FLAC__bool EncoderSession_construct(EncoderSession *e, FLAC__bool use_ogg, FLAC__bool verify, FILE *infile, const char *infilename, const char *outfilename);
 133 static void EncoderSession_destroy(EncoderSession *e);
 134 static int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero);
 135 static int EncoderSession_finish_error(EncoderSession *e);
 136 static FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options, unsigned channels, unsigned bps, unsigned sample_rate);
 137 static FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], unsigned samples);
 138 static FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e);
 139 static FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input);
 140 static void format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps);
 141 #ifdef FLAC__HAS_OGG
 142 static FLAC__StreamEncoderWriteStatus ogg_stream_encoder_write_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
 143 static void ogg_stream_encoder_metadata_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data);
 144 static void ogg_file_encoder_progress_callback(const OggFLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data);
 145 #endif
 146 static FLAC__StreamEncoderWriteStatus flac_stream_encoder_write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
 147 static void flac_stream_encoder_metadata_callback(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data);
 148 static void flac_file_encoder_progress_callback(const FLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data);
 149 static FLAC__bool parse_cuesheet_(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset);
 150 static void print_stats(const EncoderSession *encoder_session);
 151 static void print_error_with_state(const EncoderSession *e, const char *message);
 152 static void print_verify_error(EncoderSession *e);
 153 static FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn);
 154 static FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
 155 static FLAC__bool read_big_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn);
 156 static FLAC__bool read_big_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
 157 static FLAC__bool read_sane_extended(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn);
 158 static FLAC__bool fskip_ahead(FILE *f, FLAC__uint64 offset);
 159
 160 /*
 161  * public routines
 162  */
 163 int
 164 flac__encode_aif(FILE *infile, long infilesize, const char *infilename, const char *outfilename,
 165         const FLAC__byte *lookahead, unsigned lookahead_length, wav_encode_options_t options)
 166 {
 167         EncoderSession encoder_session;
 168         FLAC__uint16 x;
 169         FLAC__uint32 xx;
 170         unsigned int channels= 0U, bps= 0U, sample_rate= 0U, sample_frames= 0U;
 171         FLAC__bool got_comm_chunk= false, got_ssnd_chunk= false;
 172         int info_align_carry= -1, info_align_zero= -1;
 173
 174         (void)infilesize; /* silence compiler warning about unused parameter */
 175         (void)lookahead; /* silence compiler warning about unused parameter */
 176         (void)lookahead_length; /* silence compiler warning about unused parameter */
 177
 178         if(!
 179                 EncoderSession_construct(
 180                         &encoder_session,
 181 #ifdef FLAC__HAS_OGG
 182                         options.common.use_ogg,
 183 #else
 184                         /*use_ogg=*/false,
 185 #endif
 186                         options.common.verify,
 187                         infile,
 188                         infilename,
 189                         outfilename
 190                 )
 191         )
 192                 return 1;
 193
 194         /* lookahead[] already has "FORMxxxxAIFF", do sub-chunks */
 195
 196         while(1) {
 197                 size_t c= 0U;
 198                 char chunk_id[4];
 199
 200                 /* chunk identifier; really conservative about behavior of fread() and feof() */
 201                 if(feof(infile) || ((c= fread(chunk_id, 1U, 4U, infile)), c==0U && feof(infile)))
 202                         break;
 203                 else if(c<4U || feof(infile)) {
 204                         flac__utils_printf(stderr, 1, "%s: ERROR: incomplete chunk identifier\n", encoder_session.inbasefilename);
 205                         return EncoderSession_finish_error(&encoder_session);
 206                 }
 207
 208                 if(got_comm_chunk==false && !strncmp(chunk_id, "COMM", 4)) { /* common chunk */
 209                         unsigned long skip;
 210
 211                         /* COMM chunk size */
 212                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 213                                 return EncoderSession_finish_error(&encoder_session);
 214                         else if(xx<18U) {
 215                                 flac__utils_printf(stderr, 1, "%s: ERROR: non-standard 'COMM' chunk has length = %u\n", encoder_session.inbasefilename, (unsigned int)xx);
 216                                 return EncoderSession_finish_error(&encoder_session);
 217                         }
 218                         else if(xx!=18U) {
 219                                 flac__utils_printf(stderr, 1, "%s: WARNING: non-standard 'COMM' chunk has length = %u\n", encoder_session.inbasefilename, (unsigned int)xx);
 220                         }
 221                         skip= (xx-18U)+(xx & 1U);
 222
 223                         /* number of channels */
 224                         if(!read_big_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
 225                                 return EncoderSession_finish_error(&encoder_session);
 226                         else if(x==0U || x>FLAC__MAX_CHANNELS) {
 227                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number channels %u\n", encoder_session.inbasefilename, (unsigned int)x);
 228                                 return EncoderSession_finish_error(&encoder_session);
 229                         }
 230                         else if(options.common.sector_align && x!=2U) {
 231                                 flac__utils_printf(stderr, 1, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)x);
 232                                 return EncoderSession_finish_error(&encoder_session);
 233                         }
 234                         channels= x;
 235
 236                         /* number of sample frames */
 237                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 238                                 return EncoderSession_finish_error(&encoder_session);
 239                         sample_frames= xx;
 240
 241                         /* bits per sample */
 242                         if(!read_big_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
 243                                 return EncoderSession_finish_error(&encoder_session);
 244                         else if(x!=8U && x!=16U && x!=24U) {
 245                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported bits per sample %u\n", encoder_session.inbasefilename, (unsigned int)x);
 246                                 return EncoderSession_finish_error(&encoder_session);
 247                         }
 248                         else if(options.common.sector_align && x!=16U) {
 249                                 flac__utils_printf(stderr, 1, "%s: ERROR: file has %u bits per sample, must be 16 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)x);
 250                                 return EncoderSession_finish_error(&encoder_session);
 251                         }
 252                         bps= x;
 253
 254                         /* sample rate */
 255                         if(!read_sane_extended(infile, &xx, false, encoder_session.inbasefilename))
 256                                 return EncoderSession_finish_error(&encoder_session);
 257                         else if(!FLAC__format_sample_rate_is_valid(xx)) {
 258                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, (unsigned int)xx);
 259                                 return EncoderSession_finish_error(&encoder_session);
 260                         }
 261                         else if(options.common.sector_align && xx!=44100U) {
 262                                 flac__utils_printf(stderr, 1, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, (unsigned int)xx);
 263                                 return EncoderSession_finish_error(&encoder_session);
 264                         }
 265                         sample_rate= xx;
 266
 267                         /* skip any extra data in the COMM chunk */
 268                         if(!fskip_ahead(infile, skip)) {
 269                                 flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping extra COMM data\n", encoder_session.inbasefilename);
 270                                 return EncoderSession_finish_error(&encoder_session);
 271                         }
 272
 273                         /*
 274                          * now that we know the sample rate, canonicalize the
 275                          * --skip string to a number of samples:
 276                          */
 277                         flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, sample_rate);
 278                         FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
 279                         encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
 280                         FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
 281
 282                         got_comm_chunk= true;
 283                 }
 284                 else if(got_ssnd_chunk==false && !strncmp(chunk_id, "SSND", 4)) { /* sound data chunk */
 285                         unsigned int offset= 0U, block_size= 0U, align_remainder= 0U, data_bytes;
 286                         size_t bytes_per_frame= channels*(bps>>3);
 287                         FLAC__uint64 total_samples_in_input, trim = 0;
 288                         FLAC__bool pad= false;
 289
 290                         if(got_comm_chunk==false) {
 291                                 flac__utils_printf(stderr, 1, "%s: ERROR: got 'SSND' chunk before 'COMM' chunk\n", encoder_session.inbasefilename);
 292                                 return EncoderSession_finish_error(&encoder_session);
 293                         }
 294
 295                         /* SSND chunk size */
 296                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 297                                 return EncoderSession_finish_error(&encoder_session);
 298                         data_bytes= xx;
 299                         pad= (data_bytes & 1U) ? true : false;
 300                         data_bytes-= 8U; /* discount the offset and block size fields */
 301
 302                         /* offset */
 303                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 304                                 return EncoderSession_finish_error(&encoder_session);
 305                         offset= xx;
 306                         data_bytes-= offset;
 307
 308                         /* block size */
 309                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 310                                 return EncoderSession_finish_error(&encoder_session);
 311                         else if(xx!=0U) {
 312                                 flac__utils_printf(stderr, 1, "%s: ERROR: block size is %u; must be 0\n", encoder_session.inbasefilename, (unsigned int)xx);
 313                                 return EncoderSession_finish_error(&encoder_session);
 314                         }
 315                         block_size= xx;
 316
 317                         /* skip any SSND offset bytes */
 318                         FLAC__ASSERT(offset<=LONG_MAX);
 319                         if(!fskip_ahead(infile, offset)) {
 320                                 flac__utils_printf(stderr, 1, "%s: ERROR: skipping offset in SSND chunk\n", encoder_session.inbasefilename);
 321                                 return EncoderSession_finish_error(&encoder_session);
 322                         }
 323                         if(data_bytes!=(sample_frames*bytes_per_frame)) {
 324                                 flac__utils_printf(stderr, 1, "%s: ERROR: SSND chunk size inconsistent with sample frame count\n", encoder_session.inbasefilename);
 325                                 return EncoderSession_finish_error(&encoder_session);
 326                         }
 327
 328                         /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
 329                         FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
 330                         total_samples_in_input = data_bytes / bytes_per_frame + *options.common.align_reservoir_samples;
 331
 332                         /*
 333                          * now that we know the input size, canonicalize the
 334                          * --until string to an absolute sample number:
 335                          */
 336                         if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, sample_rate, encoder_session.skip, total_samples_in_input))
 337                                 return EncoderSession_finish_error(&encoder_session);
 338                         encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
 339                         FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
 340
 341                         if(encoder_session.skip>0U) {
 342                                 if(!fskip_ahead(infile, encoder_session.skip*bytes_per_frame)) {
 343                                         flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
 344                                         return EncoderSession_finish_error(&encoder_session);
 345                                 }
 346                         }
 347
 348                         data_bytes-= (unsigned int)encoder_session.skip*bytes_per_frame; /*@@@ WATCHOUT: 4GB limit */
 349                         encoder_session.total_samples_to_encode= total_samples_in_input - encoder_session.skip;
 350                         if(encoder_session.until > 0) {
 351                                 trim = total_samples_in_input - encoder_session.until;
 352                                 FLAC__ASSERT(total_samples_in_input > 0);
 353                                 FLAC__ASSERT(!options.common.sector_align);
 354                                 data_bytes-= (unsigned int)trim*bytes_per_frame;
 355                                 encoder_session.total_samples_to_encode-= trim;
 356                         }
 357                         if(options.common.sector_align) {
 358                                 align_remainder= (unsigned int)(encoder_session.total_samples_to_encode % 588U);
 359                                 if(options.common.is_last_file)
 360                                         encoder_session.total_samples_to_encode+= (588U-align_remainder); /* will pad with zeroes */
 361                                 else
 362                                         encoder_session.total_samples_to_encode-= align_remainder; /* will stop short and carry over to next file */
 363                         }
 364
 365                         /* +54 for the size of the AIFF headers; this is just an estimate for the progress indicator and doesn't need to be exact */
 366                         encoder_session.unencoded_size= encoder_session.total_samples_to_encode*bytes_per_frame+54;
 367
 368                         if(!EncoderSession_init_encoder(&encoder_session, options.common, channels, bps, sample_rate))
 369                                 return EncoderSession_finish_error(&encoder_session);
 370
 371                         /* first do any samples in the reservoir */
 372                         if(options.common.sector_align && *options.common.align_reservoir_samples>0U) {
 373
 374                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
 375                                         print_error_with_state(&encoder_session, "ERROR during encoding");
 376                                         return EncoderSession_finish_error(&encoder_session);
 377                                 }
 378                         }
 379
 380                         /* decrement the data_bytes counter if we need to align the file */
 381                         if(options.common.sector_align) {
 382                                 if(options.common.is_last_file)
 383                                         *options.common.align_reservoir_samples= 0U;
 384                                 else {
 385                                         *options.common.align_reservoir_samples= align_remainder;
 386                                         data_bytes-= (*options.common.align_reservoir_samples)*bytes_per_frame;
 387                                 }
 388                         }
 389
 390                         /* now do from the file */
 391                         while(data_bytes>0) {
 392                                 size_t bytes_read= fread(ucbuffer_, 1U, min(data_bytes, CHUNK_OF_SAMPLES*bytes_per_frame), infile);
 393
 394                                 if(bytes_read==0U) {
 395                                         if(ferror(infile)) {
 396                                                 flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
 397                                                 return EncoderSession_finish_error(&encoder_session);
 398                                         }
 399                                         else if(feof(infile)) {
 400                                                 flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned int)encoder_session.total_samples_to_encode, (unsigned int)encoder_session.samples_written);
 401                                                 data_bytes= 0;
 402                                         }
 403                                 }
 404                                 else {
 405                                         if(bytes_read % bytes_per_frame != 0U) {
 406                                                 flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
 407                                                 return EncoderSession_finish_error(&encoder_session);
 408                                         }
 409                                         else {
 410                                                 unsigned int frames= bytes_read/bytes_per_frame;
 411                                                 format_input(input_, frames, true, false, channels, bps);
 412
 413                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, frames)) {
 414                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
 415                                                         return EncoderSession_finish_error(&encoder_session);
 416                                                 }
 417                                                 else
 418                                                         data_bytes-= bytes_read;
 419                                         }
 420                                 }
 421                         }
 422
 423                         if(trim>0) {
 424                                 FLAC__ASSERT(!options.common.sector_align);
 425                                 if(!fskip_ahead(infile, trim*bytes_per_frame)) {
 426                                         flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
 427                                         return EncoderSession_finish_error(&encoder_session);
 428                                 }
 429                         }
 430
 431                         /* now read unaligned samples into reservoir or pad with zeroes if necessary */
 432                         if(options.common.sector_align) {
 433                                 if(options.common.is_last_file) {
 434                                         unsigned int pad_frames= 588U-align_remainder;
 435
 436                                         if(pad_frames<588U) {
 437                                                 unsigned int i;
 438
 439                                                 info_align_zero= pad_frames;
 440                                                 for(i= 0U; i<channels; ++i)
 441                                                         memset(input_[i], 0, pad_frames*(bps>>3));
 442
 443                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 *const *)input_, pad_frames)) {
 444                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
 445                                                         return EncoderSession_finish_error(&encoder_session);
 446                                                 }
 447                                         }
 448                                 }
 449                                 else {
 450                                         if(*options.common.align_reservoir_samples > 0) {
 451                                                 size_t bytes_read= fread(ucbuffer_, 1U, (*options.common.align_reservoir_samples)*bytes_per_frame, infile);
 452
 453                                                 FLAC__ASSERT(CHUNK_OF_SAMPLES>=588U);
 454                                                 if(bytes_read==0U && ferror(infile)) {
 455                                                         flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
 456                                                         return EncoderSession_finish_error(&encoder_session);
 457                                                 }
 458                                                 else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_frame) {
 459                                                         flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned int)bytes_read, (unsigned int)encoder_session.total_samples_to_encode, (unsigned int)encoder_session.samples_written);
 460                                                 }
 461                                                 else {
 462                                                         info_align_carry= *options.common.align_reservoir_samples;
 463                                                         format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, true, false, channels, bps);
 464                                                 }
 465                                         }
 466                                 }
 467                         }
 468
 469                         if(pad==true) {
 470                                 unsigned char tmp;
 471
 472                                 if(fread(&tmp, 1U, 1U, infile)<1U) {
 473                                         flac__utils_printf(stderr, 1, "%s: ERROR during read of SSND pad byte\n", encoder_session.inbasefilename);
 474                                         return EncoderSession_finish_error(&encoder_session);
 475                                 }
 476                         }
 477
 478                         got_ssnd_chunk= true;
 479                 }
 480                 else { /* other chunk */
 481                         if(!strncmp(chunk_id, "COMM", 4)) {
 482                                 flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'COMM' chunk\n", encoder_session.inbasefilename);
 483                         }
 484                         else if(!strncmp(chunk_id, "SSND", 4)) {
 485                                 flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'SSND' chunk\n", encoder_session.inbasefilename);
 486                         }
 487                         else {
 488                                 flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown chunk '%s'\n", encoder_session.inbasefilename, chunk_id);
 489                         }
 490
 491                         /* chunk size */
 492                         if(!read_big_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 493                                 return EncoderSession_finish_error(&encoder_session);
 494                         else {
 495                                 unsigned long skip= xx+(xx & 1U);
 496
 497                                 FLAC__ASSERT(skip<=LONG_MAX);
 498                                 if(!fskip_ahead(infile, skip)) {
 499                                         fprintf(stderr, "%s: ERROR during read while skipping unknown chunk\n", encoder_session.inbasefilename);
 500                                         return EncoderSession_finish_error(&encoder_session);
 501                                 }
 502                         }
 503                 }
 504         }
 505
 506         if(got_ssnd_chunk==false && sample_frames!=0U) {
 507                 flac__utils_printf(stderr, 1, "%s: ERROR: missing SSND chunk\n", encoder_session.inbasefilename);
 508                 return EncoderSession_finish_error(&encoder_session);
 509         }
 510
 511         return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero);
 512 }
 513
 514 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)
 515 {
 516         EncoderSession encoder_session;
 517         FLAC__bool is_unsigned_samples = false;
 518         unsigned channels = 0, bps = 0, sample_rate = 0, data_bytes;
 519         size_t bytes_per_wide_sample, bytes_read;
 520         FLAC__uint16 x;
 521         FLAC__uint32 xx;
 522         FLAC__bool got_fmt_chunk = false, got_data_chunk = false;
 523         unsigned align_remainder = 0;
 524         int info_align_carry = -1, info_align_zero = -1;
 525
 526         (void)infilesize;
 527         (void)lookahead;
 528         (void)lookahead_length;
 529
 530         if(!
 531                 EncoderSession_construct(
 532                         &encoder_session,
 533 #ifdef FLAC__HAS_OGG
 534                         options.common.use_ogg,
 535 #else
 536                         /*use_ogg=*/false,
 537 #endif
 538                         options.common.verify,
 539                         infile,
 540                         infilename,
 541                         outfilename
 542                 )
 543         )
 544                 return 1;
 545
 546         /*
 547          * lookahead[] already has "RIFFxxxxWAVE", do sub-chunks
 548          */
 549         while(!feof(infile)) {
 550                 if(!read_little_endian_uint32(infile, &xx, true, encoder_session.inbasefilename))
 551                         return EncoderSession_finish_error(&encoder_session);
 552                 if(feof(infile))
 553                         break;
 554                 if(xx == 0x20746d66 && !got_fmt_chunk) { /* "fmt " */
 555                         unsigned block_align;
 556
 557                         /* fmt sub-chunk size */
 558                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 559                                 return EncoderSession_finish_error(&encoder_session);
 560                         if(xx < 16) {
 561                                 flac__utils_printf(stderr, 1, "%s: ERROR: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_session.inbasefilename, (unsigned)xx);
 562                                 return EncoderSession_finish_error(&encoder_session);
 563                         }
 564                         else if(xx != 16 && xx != 18) {
 565                                 flac__utils_printf(stderr, 1, "%s: WARNING: found non-standard 'fmt ' sub-chunk which has length = %u\n", encoder_session.inbasefilename, (unsigned)xx);
 566                         }
 567                         data_bytes = xx;
 568                         /* compression code */
 569                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
 570                                 return EncoderSession_finish_error(&encoder_session);
 571                         if(x != 1) {
 572                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported compression type %u\n", encoder_session.inbasefilename, (unsigned)x);
 573                                 return EncoderSession_finish_error(&encoder_session);
 574                         }
 575                         /* number of channels */
 576                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
 577                                 return EncoderSession_finish_error(&encoder_session);
 578                         if(x == 0 || x > FLAC__MAX_CHANNELS) {
 579                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number channels %u\n", encoder_session.inbasefilename, (unsigned)x);
 580                                 return EncoderSession_finish_error(&encoder_session);
 581                         }
 582                         else if(options.common.sector_align && x != 2) {
 583                                 flac__utils_printf(stderr, 1, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, (unsigned)x);
 584                                 return EncoderSession_finish_error(&encoder_session);
 585                         }
 586                         channels = x;
 587                         /* sample rate */
 588                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 589                                 return EncoderSession_finish_error(&encoder_session);
 590                         if(!FLAC__format_sample_rate_is_valid(xx)) {
 591                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, (unsigned)xx);
 592                                 return EncoderSession_finish_error(&encoder_session);
 593                         }
 594                         else if(options.common.sector_align && xx != 44100) {
 595                                 flac__utils_printf(stderr, 1, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, (unsigned)xx);
 596                                 return EncoderSession_finish_error(&encoder_session);
 597                         }
 598                         sample_rate = xx;
 599                         /* avg bytes per second (ignored) */
 600                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 601                                 return EncoderSession_finish_error(&encoder_session);
 602                         /* block align */
 603                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
 604                                 return EncoderSession_finish_error(&encoder_session);
 605                         block_align = x;
 606                         /* bits per sample */
 607                         if(!read_little_endian_uint16(infile, &x, false, encoder_session.inbasefilename))
 608                                 return EncoderSession_finish_error(&encoder_session);
 609                         if(x != 8 && x != 16 && x != 24) {
 610                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported bits-per-sample %u\n", encoder_session.inbasefilename, (unsigned)x);
 611                                 return EncoderSession_finish_error(&encoder_session);
 612                         }
 613                         else if(options.common.sector_align && x != 16) {
 614                                 flac__utils_printf(stderr, 1, "%s: ERROR: file has %u bits per sample, must be 16 for --sector-align\n", encoder_session.inbasefilename, (unsigned)x);
 615                                 return EncoderSession_finish_error(&encoder_session);
 616                         }
 617                         bps = x;
 618                         if(bps * channels != block_align * 8) {
 619                                 flac__utils_printf(stderr, 1, "%s: ERROR: unsupported block alignment (%u), for bits-per-sample=%u, channels=%u\n", encoder_session.inbasefilename, block_align, bps, channels);
 620                                 return EncoderSession_finish_error(&encoder_session);
 621                         }
 622                         is_unsigned_samples = (x == 8);
 623
 624                         /* skip any extra data in the fmt sub-chunk */
 625                         data_bytes -= 16;
 626                         if(data_bytes > 0) {
 627                                 unsigned left, need;
 628                                 for(left = data_bytes; left > 0; ) {
 629                                         need = min(left, CHUNK_OF_SAMPLES);
 630                                         if(fread(ucbuffer_, 1U, need, infile) < need) {
 631                                                 flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
 632                                                 return EncoderSession_finish_error(&encoder_session);
 633                                         }
 634                                         left -= need;
 635                                 }
 636                         }
 637
 638                         /*
 639                          * now that we know the sample rate, canonicalize the
 640                          * --skip string to a number of samples:
 641                          */
 642                         flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, sample_rate);
 643                         FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
 644                         encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
 645                         FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
 646
 647                         got_fmt_chunk = true;
 648                 }
 649                 else if(xx == 0x61746164 && !got_data_chunk && got_fmt_chunk) { /* "data" */
 650                         FLAC__uint64 total_samples_in_input, trim = 0;
 651                         FLAC__bool pad = false;
 652
 653                         /* data size */
 654                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 655                                 return EncoderSession_finish_error(&encoder_session);
 656                         data_bytes = xx;
 657                         pad = (data_bytes & 1U) ? true : false;
 658
 659                         bytes_per_wide_sample = channels * (bps >> 3);
 660
 661                         /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
 662                         FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
 663                         total_samples_in_input = data_bytes / bytes_per_wide_sample + *options.common.align_reservoir_samples;
 664
 665                         /*
 666                          * now that we know the input size, canonicalize the
 667                          * --until string to an absolute sample number:
 668                          */
 669                         if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, sample_rate, encoder_session.skip, total_samples_in_input))
 670                                 return EncoderSession_finish_error(&encoder_session);
 671                         encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
 672                         FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
 673
 674                         if(encoder_session.skip > 0) {
 675                                 if(!fskip_ahead(infile, encoder_session.skip * bytes_per_wide_sample)) {
 676                                         flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
 677                                         return EncoderSession_finish_error(&encoder_session);
 678                                 }
 679                         }
 680
 681                         data_bytes -= (unsigned)encoder_session.skip * bytes_per_wide_sample; /*@@@ WATCHOUT: 4GB limit */
 682                         encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
 683                         if(encoder_session.until > 0) {
 684                                 trim = total_samples_in_input - encoder_session.until;
 685                                 FLAC__ASSERT(total_samples_in_input > 0);
 686                                 FLAC__ASSERT(!options.common.sector_align);
 687                                 data_bytes -= (unsigned int)trim * bytes_per_wide_sample;
 688                                 encoder_session.total_samples_to_encode -= trim;
 689                         }
 690                         if(options.common.sector_align) {
 691                                 align_remainder = (unsigned)(encoder_session.total_samples_to_encode % 588);
 692                                 if(options.common.is_last_file)
 693                                         encoder_session.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
 694                                 else
 695                                         encoder_session.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
 696                         }
 697
 698                         /* +44 for the size of the WAV headers; this is just an estimate for the progress indicator and doesn't need to be exact */
 699                         encoder_session.unencoded_size = encoder_session.total_samples_to_encode * bytes_per_wide_sample + 44;
 700
 701                         if(!EncoderSession_init_encoder(&encoder_session, options.common, channels, bps, sample_rate))
 702                                 return EncoderSession_finish_error(&encoder_session);
 703
 704                         /*
 705                          * first do any samples in the reservoir
 706                          */
 707                         if(options.common.sector_align && *options.common.align_reservoir_samples > 0) {
 708                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
 709                                         print_error_with_state(&encoder_session, "ERROR during encoding");
 710                                         return EncoderSession_finish_error(&encoder_session);
 711                                 }
 712                         }
 713
 714                         /*
 715                          * decrement the data_bytes counter if we need to align the file
 716                          */
 717                         if(options.common.sector_align) {
 718                                 if(options.common.is_last_file) {
 719                                         *options.common.align_reservoir_samples = 0;
 720                                 }
 721                                 else {
 722                                         *options.common.align_reservoir_samples = align_remainder;
 723                                         data_bytes -= (*options.common.align_reservoir_samples) * bytes_per_wide_sample;
 724                                 }
 725                         }
 726
 727                         /*
 728                          * now do from the file
 729                          */
 730                         while(data_bytes > 0) {
 731                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), min(data_bytes, CHUNK_OF_SAMPLES * bytes_per_wide_sample), infile);
 732                                 if(bytes_read == 0) {
 733                                         if(ferror(infile)) {
 734                                                 flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
 735                                                 return EncoderSession_finish_error(&encoder_session);
 736                                         }
 737                                         else if(feof(infile)) {
 738                                                 flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
 739                                                 data_bytes = 0;
 740                                         }
 741                                 }
 742                                 else {
 743                                         if(bytes_read % bytes_per_wide_sample != 0) {
 744                                                 flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
 745                                                 return EncoderSession_finish_error(&encoder_session);
 746                                         }
 747                                         else {
 748                                                 unsigned wide_samples = bytes_read / bytes_per_wide_sample;
 749                                                 format_input(input_, wide_samples, false, is_unsigned_samples, channels, bps);
 750
 751                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
 752                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
 753                                                         return EncoderSession_finish_error(&encoder_session);
 754                                                 }
 755                                                 data_bytes -= bytes_read;
 756                                         }
 757                                 }
 758                         }
 759
 760                         if(trim > 0) {
 761                                 FLAC__ASSERT(!options.common.sector_align);
 762                                 if(!fskip_ahead(infile, trim * bytes_per_wide_sample)) {
 763                                         flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
 764                                         return EncoderSession_finish_error(&encoder_session);
 765                                 }
 766                         }
 767
 768                         /*
 769                          * now read unaligned samples into reservoir or pad with zeroes if necessary
 770                          */
 771                         if(options.common.sector_align) {
 772                                 if(options.common.is_last_file) {
 773                                         unsigned wide_samples = 588 - align_remainder;
 774                                         if(wide_samples < 588) {
 775                                                 unsigned channel;
 776
 777                                                 info_align_zero = wide_samples;
 778                                                 data_bytes = wide_samples * (bps >> 3);
 779                                                 for(channel = 0; channel < channels; channel++)
 780                                                         memset(input_[channel], 0, data_bytes);
 781
 782                                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
 783                                                         print_error_with_state(&encoder_session, "ERROR during encoding");
 784                                                         return EncoderSession_finish_error(&encoder_session);
 785                                                 }
 786                                         }
 787                                 }
 788                                 else {
 789                                         if(*options.common.align_reservoir_samples > 0) {
 790                                                 FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
 791                                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), (*options.common.align_reservoir_samples) * bytes_per_wide_sample, infile);
 792                                                 if(bytes_read == 0 && ferror(infile)) {
 793                                                         flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
 794                                                         return EncoderSession_finish_error(&encoder_session);
 795                                                 }
 796                                                 else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_wide_sample) {
 797                                                         flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)bytes_read, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
 798                                                         data_bytes = 0;
 799                                                 }
 800                                                 else {
 801                                                         info_align_carry = *options.common.align_reservoir_samples;
 802                                                         format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, false, is_unsigned_samples, channels, bps);
 803                                                 }
 804                                         }
 805                                 }
 806                         }
 807
 808                         if(pad == true) {
 809                                 unsigned char tmp;
 810
 811                                 if(fread(&tmp, 1U, 1U, infile) < 1U) {
 812                                         flac__utils_printf(stderr, 1, "%s: ERROR during read of data pad byte\n", encoder_session.inbasefilename);
 813                                         return EncoderSession_finish_error(&encoder_session);
 814                                 }
 815                         }
 816
 817                         got_data_chunk = true;
 818                 }
 819                 else {
 820                         if(xx == 0x20746d66 && got_fmt_chunk) { /* "fmt " */
 821                                 flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'fmt ' sub-chunk\n", encoder_session.inbasefilename);
 822                         }
 823                         else if(xx == 0x61746164) { /* "data" */
 824                                 if(got_data_chunk) {
 825                                         flac__utils_printf(stderr, 1, "%s: WARNING: skipping extra 'data' sub-chunk\n", encoder_session.inbasefilename);
 826                                 }
 827                                 else if(!got_fmt_chunk) {
 828                                         flac__utils_printf(stderr, 1, "%s: ERROR: got 'data' sub-chunk before 'fmt' sub-chunk\n", encoder_session.inbasefilename);
 829                                         return EncoderSession_finish_error(&encoder_session);
 830                                 }
 831                                 else {
 832                                         FLAC__ASSERT(0);
 833                                 }
 834                         }
 835                         else {
 836                                 flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown sub-chunk '%c%c%c%c'\n", encoder_session.inbasefilename, (char)(xx&255), (char)((xx>>8)&255), (char)((xx>>16)&255), (char)(xx>>24));
 837                         }
 838                         /* sub-chunk size */
 839                         if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
 840                                 return EncoderSession_finish_error(&encoder_session);
 841                         else {
 842                                 unsigned long skip = xx+(xx & 1U);
 843
 844                                 FLAC__ASSERT(skip<=LONG_MAX);
 845                                 if(!fskip_ahead(infile, skip)) {
 846                                         flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping unsupported sub-chunk\n", encoder_session.inbasefilename);
 847                                         return EncoderSession_finish_error(&encoder_session);
 848                                 }
 849                         }
 850                 }
 851         }
 852
 853         return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero);
 854 }
 855
 856 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)
 857 {
 858         EncoderSession encoder_session;
 859         size_t bytes_read;
 860         const size_t bytes_per_wide_sample = options.channels * (options.bps >> 3);
 861         unsigned align_remainder = 0;
 862         int info_align_carry = -1, info_align_zero = -1;
 863         FLAC__uint64 total_samples_in_input = 0;;
 864
 865         FLAC__ASSERT(!options.common.sector_align || options.channels == 2);
 866         FLAC__ASSERT(!options.common.sector_align || options.bps == 16);
 867         FLAC__ASSERT(!options.common.sector_align || options.sample_rate == 44100);
 868         FLAC__ASSERT(!options.common.sector_align || infilesize >= 0);
 869         FLAC__ASSERT(!options.common.replay_gain || options.channels <= 2);
 870         FLAC__ASSERT(!options.common.replay_gain || grabbag__replaygain_is_valid_sample_frequency(options.sample_rate));
 871
 872         if(!
 873                 EncoderSession_construct(
 874                         &encoder_session,
 875 #ifdef FLAC__HAS_OGG
 876                         options.common.use_ogg,
 877 #else
 878                         /*use_ogg=*/false,
 879 #endif
 880                         options.common.verify,
 881                         infile,
 882                         infilename,
 883                         outfilename
 884                 )
 885         )
 886                 return 1;
 887
 888         /*
 889          * now that we know the sample rate, canonicalize the
 890          * --skip string to a number of samples:
 891          */
 892         flac__utils_canonicalize_skip_until_specification(&options.common.skip_specification, options.sample_rate);
 893         FLAC__ASSERT(options.common.skip_specification.value.samples >= 0);
 894         encoder_session.skip = (FLAC__uint64)options.common.skip_specification.value.samples;
 895         FLAC__ASSERT(!options.common.sector_align || encoder_session.skip == 0);
 896
 897         if(infilesize < 0)
 898                 total_samples_in_input = 0;
 899         else {
 900                 /* *options.common.align_reservoir_samples will be 0 unless --sector-align is used */
 901                 FLAC__ASSERT(options.common.sector_align || *options.common.align_reservoir_samples == 0);
 902                 total_samples_in_input = (unsigned)infilesize / bytes_per_wide_sample + *options.common.align_reservoir_samples;
 903         }
 904
 905         /*
 906          * now that we know the input size, canonicalize the
 907          * --until strings to a number of samples:
 908          */
 909         if(!canonicalize_until_specification(&options.common.until_specification, encoder_session.inbasefilename, options.sample_rate, encoder_session.skip, total_samples_in_input))
 910                 return EncoderSession_finish_error(&encoder_session);
 911         encoder_session.until = (FLAC__uint64)options.common.until_specification.value.samples;
 912         FLAC__ASSERT(!options.common.sector_align || encoder_session.until == 0);
 913
 914         encoder_session.total_samples_to_encode = total_samples_in_input - encoder_session.skip;
 915         if(encoder_session.until > 0) {
 916                 const FLAC__uint64 trim = total_samples_in_input - encoder_session.until;
 917                 FLAC__ASSERT(total_samples_in_input > 0);
 918                 FLAC__ASSERT(!options.common.sector_align);
 919                 encoder_session.total_samples_to_encode -= trim;
 920         }
 921         if(infilesize >= 0 && options.common.sector_align) {
 922                 FLAC__ASSERT(encoder_session.skip == 0);
 923                 align_remainder = (unsigned)(encoder_session.total_samples_to_encode % 588);
 924                 if(options.common.is_last_file)
 925                         encoder_session.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */
 926                 else
 927                         encoder_session.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */
 928         }
 929         encoder_session.unencoded_size = encoder_session.total_samples_to_encode * bytes_per_wide_sample;
 930
 931         if(encoder_session.total_samples_to_encode <= 0)
 932                 flac__utils_printf(stderr, 2, "(No runtime statistics possible; please wait for encoding to finish...)\n");
 933
 934         if(encoder_session.skip > 0) {
 935                 unsigned skip_bytes = bytes_per_wide_sample * (unsigned)encoder_session.skip;
 936                 if(skip_bytes > lookahead_length) {
 937                         skip_bytes -= lookahead_length;
 938                         lookahead_length = 0;
 939                         if(!fskip_ahead(infile, skip_bytes)) {
 940                                 flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename);
 941                                 return EncoderSession_finish_error(&encoder_session);
 942                         }
 943                 }
 944                 else {
 945                         lookahead += skip_bytes;
 946                         lookahead_length -= skip_bytes;
 947                 }
 948         }
 949
 950         if(!EncoderSession_init_encoder(&encoder_session, options.common, options.channels, options.bps, options.sample_rate))
 951                 return EncoderSession_finish_error(&encoder_session);
 952
 953         /*
 954          * first do any samples in the reservoir
 955          */
 956         if(options.common.sector_align && *options.common.align_reservoir_samples > 0) {
 957                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)options.common.align_reservoir, *options.common.align_reservoir_samples)) {
 958                         print_error_with_state(&encoder_session, "ERROR during encoding");
 959                         return EncoderSession_finish_error(&encoder_session);
 960                 }
 961         }
 962
 963         /*
 964          * decrement infilesize if we need to align the file
 965          */
 966         if(options.common.sector_align) {
 967                 FLAC__ASSERT(infilesize >= 0);
 968                 if(options.common.is_last_file) {
 969                         *options.common.align_reservoir_samples = 0;
 970                 }
 971                 else {
 972                         *options.common.align_reservoir_samples = align_remainder;
 973                         infilesize -= (long)((*options.common.align_reservoir_samples) * bytes_per_wide_sample);
 974                         FLAC__ASSERT(infilesize >= 0);
 975                 }
 976         }
 977
 978         /*
 979          * now do from the file
 980          */
 981         if(infilesize < 0) {
 982                 while(!feof(infile)) {
 983                         if(lookahead_length > 0) {
 984                                 FLAC__ASSERT(lookahead_length < CHUNK_OF_SAMPLES * bytes_per_wide_sample);
 985                                 memcpy(ucbuffer_, lookahead, lookahead_length);
 986                                 bytes_read = fread(ucbuffer_+lookahead_length, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample - lookahead_length, infile) + lookahead_length;
 987                                 if(ferror(infile)) {
 988                                         flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
 989                                         return EncoderSession_finish_error(&encoder_session);
 990                                 }
 991                                 lookahead_length = 0;
 992                         }
 993                         else
 994                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), CHUNK_OF_SAMPLES * bytes_per_wide_sample, infile);
 995
 996                         if(bytes_read == 0) {
 997                                 if(ferror(infile)) {
 998                                         flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
 999                                         return EncoderSession_finish_error(&encoder_session);
1000                                 }
1001                         }
1002                         else if(bytes_read % bytes_per_wide_sample != 0) {
1003                                 flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
1004                                 return EncoderSession_finish_error(&encoder_session);
1005                         }
1006                         else {
1007                                 unsigned wide_samples = bytes_read / bytes_per_wide_sample;
1008                                 format_input(input_, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps);
1009
1010                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
1011                                         print_error_with_state(&encoder_session, "ERROR during encoding");
1012                                         return EncoderSession_finish_error(&encoder_session);
1013                                 }
1014                         }
1015                 }
1016         }
1017         else {
1018                 const FLAC__uint64 max_input_bytes = encoder_session.total_samples_to_encode * bytes_per_wide_sample;
1019                 FLAC__uint64 total_input_bytes_read = 0;
1020                 while(total_input_bytes_read < max_input_bytes) {
1021                         {
1022                                 size_t wanted = (CHUNK_OF_SAMPLES * bytes_per_wide_sample);
1023                                 wanted = min(wanted, (size_t)(max_input_bytes - total_input_bytes_read));
1024
1025                                 if(lookahead_length > 0) {
1026                                         FLAC__ASSERT(lookahead_length <= wanted);
1027                                         memcpy(ucbuffer_, lookahead, lookahead_length);
1028                                         wanted -= lookahead_length;
1029                                         bytes_read = lookahead_length;
1030                                         if(wanted > 0) {
1031                                                 bytes_read += fread(ucbuffer_+lookahead_length, sizeof(unsigned char), wanted, infile);
1032                                                 if(ferror(infile)) {
1033                                                         flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
1034                                                         return EncoderSession_finish_error(&encoder_session);
1035                                                 }
1036                                         }
1037                                         lookahead_length = 0;
1038                                 }
1039                                 else
1040                                         bytes_read = fread(ucbuffer_, sizeof(unsigned char), wanted, infile);
1041                         }
1042
1043                         if(bytes_read == 0) {
1044                                 if(ferror(infile)) {
1045                                         flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
1046                                         return EncoderSession_finish_error(&encoder_session);
1047                                 }
1048                                 else if(feof(infile)) {
1049                                         flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
1050                                         total_input_bytes_read = max_input_bytes;
1051                                 }
1052                         }
1053                         else {
1054                                 if(bytes_read % bytes_per_wide_sample != 0) {
1055                                         flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename);
1056                                         return EncoderSession_finish_error(&encoder_session);
1057                                 }
1058                                 else {
1059                                         unsigned wide_samples = bytes_read / bytes_per_wide_sample;
1060                                         format_input(input_, wide_samples, options.is_big_endian, options.is_unsigned_samples, options.channels, options.bps);
1061
1062                                         if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
1063                                                 print_error_with_state(&encoder_session, "ERROR during encoding");
1064                                                 return EncoderSession_finish_error(&encoder_session);
1065                                         }
1066                                         total_input_bytes_read += bytes_read;
1067                                 }
1068                         }
1069                 }
1070         }
1071
1072         /*
1073          * now read unaligned samples into reservoir or pad with zeroes if necessary
1074          */
1075         if(options.common.sector_align) {
1076                 if(options.common.is_last_file) {
1077                         unsigned wide_samples = 588 - align_remainder;
1078                         if(wide_samples < 588) {
1079                                 unsigned channel, data_bytes;
1080
1081                                 info_align_zero = wide_samples;
1082                                 data_bytes = wide_samples * (options.bps >> 3);
1083                                 for(channel = 0; channel < options.channels; channel++)
1084                                         memset(input_[channel], 0, data_bytes);
1085
1086                                 if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) {
1087                                         print_error_with_state(&encoder_session, "ERROR during encoding");
1088                                         return EncoderSession_finish_error(&encoder_session);
1089                                 }
1090                         }
1091                 }
1092                 else {
1093                         if(*options.common.align_reservoir_samples > 0) {
1094                                 FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588);
1095                                 bytes_read = fread(ucbuffer_, sizeof(unsigned char), (*options.common.align_reservoir_samples) * bytes_per_wide_sample, infile);
1096                                 if(bytes_read == 0 && ferror(infile)) {
1097                                         flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename);
1098                                         return EncoderSession_finish_error(&encoder_session);
1099                                 }
1100                                 else if(bytes_read != (*options.common.align_reservoir_samples) * bytes_per_wide_sample) {
1101                                         flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %u bytes; expected %u samples, got %u samples\n", encoder_session.inbasefilename, (unsigned)bytes_read, (unsigned)encoder_session.total_samples_to_encode, (unsigned)encoder_session.samples_written);
1102                                 }
1103                                 else {
1104                                         info_align_carry = *options.common.align_reservoir_samples;
1105                                         format_input(options.common.align_reservoir, *options.common.align_reservoir_samples, false, options.is_unsigned_samples, options.channels, options.bps);
1106                                 }
1107                         }
1108                 }
1109         }
1110
1111         return EncoderSession_finish_ok(&encoder_session, info_align_carry, info_align_zero);
1112 }
1113
1114 FLAC__bool EncoderSession_construct(EncoderSession *e, FLAC__bool use_ogg, FLAC__bool verify, FILE *infile, const char *infilename, const char *outfilename)
1115 {
1116         unsigned i;
1117         FLAC__uint32 test = 1;
1118
1119         /*
1120          * initialize globals
1121          */
1122
1123         is_big_endian_host_ = (*((FLAC__byte*)(&test)))? false : true;
1124
1125         for(i = 0; i < FLAC__MAX_CHANNELS; i++)
1126                 input_[i] = &(in_[i][0]);
1127
1128
1129         /*
1130          * initialize instance
1131          */
1132
1133 #ifdef FLAC__HAS_OGG
1134         e->use_ogg = use_ogg;
1135 #else
1136         (void)use_ogg;
1137 #endif
1138         e->verify = verify;
1139
1140         e->is_stdout = (0 == strcmp(outfilename, "-"));
1141
1142         e->inbasefilename = grabbag__file_get_basename(infilename);
1143         e->outfilename = outfilename;
1144
1145         e->skip = 0; /* filled in later after the sample_rate is known */
1146         e->unencoded_size = 0;
1147         e->total_samples_to_encode = 0;
1148         e->bytes_written = 0;
1149         e->samples_written = 0;
1150         e->blocksize = 0;
1151         e->stats_mask = 0;
1152
1153         e->encoder.flac.stream = 0;
1154         e->encoder.flac.file = 0;
1155 #ifdef FLAC__HAS_OGG
1156         e->encoder.ogg.stream = 0;
1157         e->encoder.ogg.file = 0;
1158 #endif
1159
1160         e->fin = infile;
1161         e->fout = 0;
1162         e->seek_table_template = 0;
1163
1164         if(e->is_stdout) {
1165                 e->fout = grabbag__file_get_binary_stdout();
1166         }
1167
1168         if(0 == (e->seek_table_template = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE))) {
1169                 flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for seek table\n", e->inbasefilename);
1170                 return false;
1171         }
1172
1173 #ifdef FLAC__HAS_OGG
1174         if(e->use_ogg) {
1175                 if(e->is_stdout) {
1176                         e->encoder.ogg.stream = OggFLAC__stream_encoder_new();
1177                         if(0 == e->encoder.ogg.stream) {
1178                                 flac__utils_printf(stderr, 1, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1179                                 EncoderSession_destroy(e);
1180                                 return false;
1181                         }
1182                 }
1183                 else {
1184                         e->encoder.ogg.file = OggFLAC__file_encoder_new();
1185                         if(0 == e->encoder.ogg.file) {
1186                                 flac__utils_printf(stderr, 1, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1187                                 EncoderSession_destroy(e);
1188                                 return false;
1189                         }
1190                 }
1191         }
1192         else
1193 #endif
1194         if(e->is_stdout) {
1195                 e->encoder.flac.stream = FLAC__stream_encoder_new();
1196                 if(0 == e->encoder.flac.stream) {
1197                         flac__utils_printf(stderr, 1, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1198                         EncoderSession_destroy(e);
1199                         return false;
1200                 }
1201         }
1202         else {
1203                 e->encoder.flac.file = FLAC__file_encoder_new();
1204                 if(0 == e->encoder.flac.file) {
1205                         flac__utils_printf(stderr, 1, "%s: ERROR creating the encoder instance\n", e->inbasefilename);
1206                         EncoderSession_destroy(e);
1207                         return false;
1208                 }
1209         }
1210
1211         return true;
1212 }
1213
1214 void EncoderSession_destroy(EncoderSession *e)
1215 {
1216         if(e->fin != stdin)
1217                 fclose(e->fin);
1218         if(0 != e->fout && e->fout != stdout)
1219                 fclose(e->fout);
1220
1221 #ifdef FLAC__HAS_OGG
1222         if(e->use_ogg) {
1223                 if(e->is_stdout) {
1224                         if(0 != e->encoder.ogg.stream) {
1225                                 OggFLAC__stream_encoder_delete(e->encoder.ogg.stream);
1226                                 e->encoder.ogg.stream = 0;
1227                         }
1228                 }
1229                 else {
1230                         if(0 != e->encoder.ogg.file) {
1231                                 OggFLAC__file_encoder_delete(e->encoder.ogg.file);
1232                                 e->encoder.ogg.file = 0;
1233                         }
1234                 }
1235         }
1236         else
1237 #endif
1238         if(e->is_stdout) {
1239                 if(0 != e->encoder.flac.stream) {
1240                         FLAC__stream_encoder_delete(e->encoder.flac.stream);
1241                         e->encoder.flac.stream = 0;
1242                 }
1243         }
1244         else {
1245                 if(0 != e->encoder.flac.file) {
1246                         FLAC__file_encoder_delete(e->encoder.flac.file);
1247                         e->encoder.flac.file = 0;
1248                 }
1249         }
1250
1251         if(0 != e->seek_table_template) {
1252                 FLAC__metadata_object_delete(e->seek_table_template);
1253                 e->seek_table_template = 0;
1254         }
1255 }
1256
1257 int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero)
1258 {
1259         FLAC__StreamEncoderState fse_state = FLAC__STREAM_ENCODER_OK;
1260         int ret = 0;
1261
1262 #ifdef FLAC__HAS_OGG
1263         if(e->use_ogg) {
1264                 if(e->is_stdout) {
1265                         if(e->encoder.ogg.stream) {
1266                                 fse_state = OggFLAC__stream_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.stream);
1267                                 OggFLAC__stream_encoder_finish(e->encoder.ogg.stream);
1268                         }
1269                 }
1270                 else {
1271                         if(e->encoder.ogg.file) {
1272                                 fse_state = OggFLAC__file_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.file);
1273                                 OggFLAC__file_encoder_finish(e->encoder.ogg.file);
1274                         }
1275                 }
1276         }
1277         else
1278 #endif
1279         if(e->is_stdout) {
1280                 if(e->encoder.flac.stream) {
1281                         fse_state = FLAC__stream_encoder_get_state(e->encoder.flac.stream);
1282                         FLAC__stream_encoder_finish(e->encoder.flac.stream);
1283                 }
1284         }
1285         else {
1286                 if(e->encoder.flac.file) {
1287                         fse_state = FLAC__file_encoder_get_stream_encoder_state(e->encoder.flac.file);
1288                         FLAC__file_encoder_finish(e->encoder.flac.file);
1289                 }
1290         }
1291
1292         if(e->total_samples_to_encode > 0) {
1293                 print_stats(e);
1294                 flac__utils_printf(stderr, 2, "\n");
1295         }
1296
1297         if(fse_state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA) {
1298                 print_verify_error(e);
1299                 ret = 1;
1300         }
1301         else {
1302                 if(info_align_carry >= 0) {
1303                         flac__utils_printf(stderr, 1, "%s: INFO: sector alignment causing %d samples to be carried over\n", e->inbasefilename, info_align_carry);
1304                 }
1305                 if(info_align_zero >= 0) {
1306                         flac__utils_printf(stderr, 1, "%s: INFO: sector alignment causing %d zero samples to be appended\n", e->inbasefilename, info_align_zero);
1307                 }
1308         }
1309
1310         EncoderSession_destroy(e);
1311
1312         return ret;
1313 }
1314
1315 int EncoderSession_finish_error(EncoderSession *e)
1316 {
1317         FLAC__StreamEncoderState fse_state;
1318
1319         if(e->total_samples_to_encode > 0)
1320                 flac__utils_printf(stderr, 2, "\n");
1321
1322 #ifdef FLAC__HAS_OGG
1323         if(e->use_ogg) {
1324                 if(e->is_stdout) {
1325                         fse_state = OggFLAC__stream_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.stream);
1326                 }
1327                 else {
1328                         fse_state = OggFLAC__file_encoder_get_FLAC_stream_encoder_state(e->encoder.ogg.file);
1329                 }
1330         }
1331         else
1332 #endif
1333         if(e->is_stdout) {
1334                 fse_state = FLAC__stream_encoder_get_state(e->encoder.flac.stream);
1335         }
1336         else {
1337                 fse_state = FLAC__file_encoder_get_stream_encoder_state(e->encoder.flac.file);
1338         }
1339
1340         if(fse_state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
1341                 print_verify_error(e);
1342         else
1343                 unlink(e->outfilename);
1344
1345         EncoderSession_destroy(e);
1346
1347         return 1;
1348 }
1349
1350 FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options, unsigned channels, unsigned bps, unsigned sample_rate)
1351 {
1352         unsigned num_metadata;
1353         FLAC__StreamMetadata padding, *cuesheet = 0;
1354         FLAC__StreamMetadata *metadata[4];
1355         const FLAC__bool is_cdda = (channels == 1 || channels == 2) && (bps == 16) && (sample_rate == 44100);
1356
1357         e->replay_gain = options.replay_gain;
1358         e->channels = channels;
1359         e->bits_per_sample = bps;
1360         e->sample_rate = sample_rate;
1361
1362         if(e->replay_gain) {
1363                 if(channels != 1 && channels != 2) {
1364                         flac__utils_printf(stderr, 1, "%s: ERROR, number of channels (%u) must be 1 or 2 for --replay-gain\n", e->inbasefilename, channels);
1365                         return false;
1366                 }
1367                 if(!grabbag__replaygain_is_valid_sample_frequency(sample_rate)) {
1368                         flac__utils_printf(stderr, 1, "%s: ERROR, invalid sample rate (%u) for --replay-gain\n", e->inbasefilename, sample_rate);
1369                         return false;
1370                 }
1371                 if(options.is_first_file) {
1372                         if(!grabbag__replaygain_init(sample_rate)) {
1373                                 flac__utils_printf(stderr, 1, "%s: ERROR initializing ReplayGain stage\n", e->inbasefilename);
1374                                 return false;
1375                         }
1376                 }
1377         }
1378
1379         if(channels != 2)
1380                 options.do_mid_side = options.loose_mid_side = false;
1381
1382         if(!parse_cuesheet_(&cuesheet, options.cuesheet_filename, e->inbasefilename, is_cdda, e->total_samples_to_encode))
1383                 return false;
1384
1385         if(!convert_to_seek_table_template(options.requested_seek_points, options.num_requested_seek_points, options.cued_seekpoints? cuesheet : 0, e)) {
1386                 flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for seek table\n", e->inbasefilename);
1387                 if(0 != cuesheet)
1388                         FLAC__metadata_object_delete(cuesheet);
1389                 return false;
1390         }
1391
1392         num_metadata = 0;
1393         if(e->seek_table_template->data.seek_table.num_points > 0) {
1394                 e->seek_table_template->is_last = false; /* the encoder will set this for us */
1395                 metadata[num_metadata++] = e->seek_table_template;
1396         }
1397         if(0 != cuesheet)
1398                 metadata[num_metadata++] = cuesheet;
1399         metadata[num_metadata++] = options.vorbis_comment;
1400         if(options.padding > 0) {
1401                 padding.is_last = false; /* the encoder will set this for us */
1402                 padding.type = FLAC__METADATA_TYPE_PADDING;
1403                 padding.length = (unsigned)options.padding;
1404                 metadata[num_metadata++] = &padding;
1405         }
1406
1407         e->blocksize = options.blocksize;
1408         e->stats_mask = (options.do_exhaustive_model_search || options.do_qlp_coeff_prec_search)? 0x0f : 0x3f;
1409
1410 #ifdef FLAC__HAS_OGG
1411         if(e->use_ogg) {
1412                 if(e->is_stdout) {
1413                         OggFLAC__stream_encoder_set_serial_number(e->encoder.ogg.stream, options.serial_number);
1414                         OggFLAC__stream_encoder_set_verify(e->encoder.ogg.stream, options.verify);
1415                         OggFLAC__stream_encoder_set_streamable_subset(e->encoder.ogg.stream, !options.lax);
1416                         OggFLAC__stream_encoder_set_do_mid_side_stereo(e->encoder.ogg.stream, options.do_mid_side);
1417                         OggFLAC__stream_encoder_set_loose_mid_side_stereo(e->encoder.ogg.stream, options.loose_mid_side);
1418                         OggFLAC__stream_encoder_set_channels(e->encoder.ogg.stream, channels);
1419                         OggFLAC__stream_encoder_set_bits_per_sample(e->encoder.ogg.stream, bps);
1420                         OggFLAC__stream_encoder_set_sample_rate(e->encoder.ogg.stream, sample_rate);
1421                         OggFLAC__stream_encoder_set_blocksize(e->encoder.ogg.stream, options.blocksize);
1422                         OggFLAC__stream_encoder_set_max_lpc_order(e->encoder.ogg.stream, options.max_lpc_order);
1423                         OggFLAC__stream_encoder_set_qlp_coeff_precision(e->encoder.ogg.stream, options.qlp_coeff_precision);
1424                         OggFLAC__stream_encoder_set_do_qlp_coeff_prec_search(e->encoder.ogg.stream, options.do_qlp_coeff_prec_search);
1425                         OggFLAC__stream_encoder_set_do_escape_coding(e->encoder.ogg.stream, options.do_escape_coding);
1426                         OggFLAC__stream_encoder_set_do_exhaustive_model_search(e->encoder.ogg.stream, options.do_exhaustive_model_search);
1427                         OggFLAC__stream_encoder_set_min_residual_partition_order(e->encoder.ogg.stream, options.min_residual_partition_order);
1428                         OggFLAC__stream_encoder_set_max_residual_partition_order(e->encoder.ogg.stream, options.max_residual_partition_order);
1429                         OggFLAC__stream_encoder_set_rice_parameter_search_dist(e->encoder.ogg.stream, options.rice_parameter_search_dist);
1430                         OggFLAC__stream_encoder_set_total_samples_estimate(e->encoder.ogg.stream, e->total_samples_to_encode);
1431                         OggFLAC__stream_encoder_set_metadata(e->encoder.ogg.stream, (num_metadata > 0)? metadata : 0, num_metadata);
1432                         OggFLAC__stream_encoder_set_write_callback(e->encoder.ogg.stream, ogg_stream_encoder_write_callback);
1433                         OggFLAC__stream_encoder_set_metadata_callback(e->encoder.ogg.stream, ogg_stream_encoder_metadata_callback);
1434                         OggFLAC__stream_encoder_set_client_data(e->encoder.ogg.stream, e);
1435
1436                         OggFLAC__stream_encoder_disable_constant_subframes(e->encoder.ogg.stream, options.debug.disable_constant_subframes);
1437                         OggFLAC__stream_encoder_disable_fixed_subframes(e->encoder.ogg.stream, options.debug.disable_fixed_subframes);
1438                         OggFLAC__stream_encoder_disable_verbatim_subframes(e->encoder.ogg.stream, options.debug.disable_verbatim_subframes);
1439
1440                         if(OggFLAC__stream_encoder_init(e->encoder.ogg.stream) != FLAC__STREAM_ENCODER_OK) {
1441                                 print_error_with_state(e, "ERROR initializing encoder");
1442                                 if(0 != cuesheet)
1443                                         FLAC__metadata_object_delete(cuesheet);
1444                                 return false;
1445                         }
1446                 }
1447                 else {
1448                         OggFLAC__file_encoder_set_serial_number(e->encoder.ogg.file, options.serial_number);
1449                         OggFLAC__file_encoder_set_filename(e->encoder.ogg.file, e->outfilename);
1450                         OggFLAC__file_encoder_set_verify(e->encoder.ogg.file, options.verify);
1451                         OggFLAC__file_encoder_set_streamable_subset(e->encoder.ogg.file, !options.lax);
1452                         OggFLAC__file_encoder_set_do_mid_side_stereo(e->encoder.ogg.file, options.do_mid_side);
1453                         OggFLAC__file_encoder_set_loose_mid_side_stereo(e->encoder.ogg.file, options.loose_mid_side);
1454                         OggFLAC__file_encoder_set_channels(e->encoder.ogg.file, channels);
1455                         OggFLAC__file_encoder_set_bits_per_sample(e->encoder.ogg.file, bps);
1456                         OggFLAC__file_encoder_set_sample_rate(e->encoder.ogg.file, sample_rate);
1457                         OggFLAC__file_encoder_set_blocksize(e->encoder.ogg.file, options.blocksize);
1458                         OggFLAC__file_encoder_set_max_lpc_order(e->encoder.ogg.file, options.max_lpc_order);
1459                         OggFLAC__file_encoder_set_qlp_coeff_precision(e->encoder.ogg.file, options.qlp_coeff_precision);
1460                         OggFLAC__file_encoder_set_do_qlp_coeff_prec_search(e->encoder.ogg.file, options.do_qlp_coeff_prec_search);
1461                         OggFLAC__file_encoder_set_do_escape_coding(e->encoder.ogg.file, options.do_escape_coding);
1462                         OggFLAC__file_encoder_set_do_exhaustive_model_search(e->encoder.ogg.file, options.do_exhaustive_model_search);
1463                         OggFLAC__file_encoder_set_min_residual_partition_order(e->encoder.ogg.file, options.min_residual_partition_order);
1464                         OggFLAC__file_encoder_set_max_residual_partition_order(e->encoder.ogg.file, options.max_residual_partition_order);
1465                         OggFLAC__file_encoder_set_rice_parameter_search_dist(e->encoder.ogg.file, options.rice_parameter_search_dist);
1466                         OggFLAC__file_encoder_set_total_samples_estimate(e->encoder.ogg.file, e->total_samples_to_encode);
1467                         OggFLAC__file_encoder_set_metadata(e->encoder.ogg.file, (num_metadata > 0)? metadata : 0, num_metadata);
1468                         OggFLAC__file_encoder_set_progress_callback(e->encoder.ogg.file, ogg_file_encoder_progress_callback);
1469                         OggFLAC__file_encoder_set_client_data(e->encoder.ogg.file, e);
1470
1471                         OggFLAC__file_encoder_disable_constant_subframes(e->encoder.ogg.file, options.debug.disable_constant_subframes);
1472                         OggFLAC__file_encoder_disable_fixed_subframes(e->encoder.ogg.file, options.debug.disable_fixed_subframes);
1473                         OggFLAC__file_encoder_disable_verbatim_subframes(e->encoder.ogg.file, options.debug.disable_verbatim_subframes);
1474
1475                         if(OggFLAC__file_encoder_init(e->encoder.ogg.file) != OggFLAC__FILE_ENCODER_OK) {
1476                                 print_error_with_state(e, "ERROR initializing encoder");
1477                                 if(0 != cuesheet)
1478                                         FLAC__metadata_object_delete(cuesheet);
1479                                 return false;
1480                         }
1481                 }
1482         }
1483         else
1484 #endif
1485         if(e->is_stdout) {
1486                 FLAC__stream_encoder_set_verify(e->encoder.flac.stream, options.verify);
1487                 FLAC__stream_encoder_set_streamable_subset(e->encoder.flac.stream, !options.lax);
1488                 FLAC__stream_encoder_set_do_mid_side_stereo(e->encoder.flac.stream, options.do_mid_side);
1489                 FLAC__stream_encoder_set_loose_mid_side_stereo(e->encoder.flac.stream, options.loose_mid_side);
1490                 FLAC__stream_encoder_set_channels(e->encoder.flac.stream, channels);
1491                 FLAC__stream_encoder_set_bits_per_sample(e->encoder.flac.stream, bps);
1492                 FLAC__stream_encoder_set_sample_rate(e->encoder.flac.stream, sample_rate);
1493                 FLAC__stream_encoder_set_blocksize(e->encoder.flac.stream, options.blocksize);
1494                 FLAC__stream_encoder_set_max_lpc_order(e->encoder.flac.stream, options.max_lpc_order);
1495                 FLAC__stream_encoder_set_qlp_coeff_precision(e->encoder.flac.stream, options.qlp_coeff_precision);
1496                 FLAC__stream_encoder_set_do_qlp_coeff_prec_search(e->encoder.flac.stream, options.do_qlp_coeff_prec_search);
1497                 FLAC__stream_encoder_set_do_escape_coding(e->encoder.flac.stream, options.do_escape_coding);
1498                 FLAC__stream_encoder_set_do_exhaustive_model_search(e->encoder.flac.stream, options.do_exhaustive_model_search);
1499                 FLAC__stream_encoder_set_min_residual_partition_order(e->encoder.flac.stream, options.min_residual_partition_order);
1500                 FLAC__stream_encoder_set_max_residual_partition_order(e->encoder.flac.stream, options.max_residual_partition_order);
1501                 FLAC__stream_encoder_set_rice_parameter_search_dist(e->encoder.flac.stream, options.rice_parameter_search_dist);
1502                 FLAC__stream_encoder_set_total_samples_estimate(e->encoder.flac.stream, e->total_samples_to_encode);
1503                 FLAC__stream_encoder_set_metadata(e->encoder.flac.stream, (num_metadata > 0)? metadata : 0, num_metadata);
1504                 FLAC__stream_encoder_set_write_callback(e->encoder.flac.stream, flac_stream_encoder_write_callback);
1505                 FLAC__stream_encoder_set_metadata_callback(e->encoder.flac.stream, flac_stream_encoder_metadata_callback);
1506                 FLAC__stream_encoder_set_client_data(e->encoder.flac.stream, e);
1507
1508                 FLAC__stream_encoder_disable_constant_subframes(e->encoder.flac.stream, options.debug.disable_constant_subframes);
1509                 FLAC__stream_encoder_disable_fixed_subframes(e->encoder.flac.stream, options.debug.disable_fixed_subframes);
1510                 FLAC__stream_encoder_disable_verbatim_subframes(e->encoder.flac.stream, options.debug.disable_verbatim_subframes);
1511
1512                 if(FLAC__stream_encoder_init(e->encoder.flac.stream) != FLAC__STREAM_ENCODER_OK) {
1513                         print_error_with_state(e, "ERROR initializing encoder");
1514                         if(0 != cuesheet)
1515                                 FLAC__metadata_object_delete(cuesheet);
1516                         return false;
1517                 }
1518         }
1519         else {
1520                 FLAC__file_encoder_set_filename(e->encoder.flac.file, e->outfilename);
1521                 FLAC__file_encoder_set_verify(e->encoder.flac.file, options.verify);
1522                 FLAC__file_encoder_set_streamable_subset(e->encoder.flac.file, !options.lax);
1523                 FLAC__file_encoder_set_do_mid_side_stereo(e->encoder.flac.file, options.do_mid_side);
1524                 FLAC__file_encoder_set_loose_mid_side_stereo(e->encoder.flac.file, options.loose_mid_side);
1525                 FLAC__file_encoder_set_channels(e->encoder.flac.file, channels);
1526                 FLAC__file_encoder_set_bits_per_sample(e->encoder.flac.file, bps);
1527                 FLAC__file_encoder_set_sample_rate(e->encoder.flac.file, sample_rate);
1528                 FLAC__file_encoder_set_blocksize(e->encoder.flac.file, options.blocksize);
1529                 FLAC__file_encoder_set_max_lpc_order(e->encoder.flac.file, options.max_lpc_order);
1530                 FLAC__file_encoder_set_qlp_coeff_precision(e->encoder.flac.file, options.qlp_coeff_precision);
1531                 FLAC__file_encoder_set_do_qlp_coeff_prec_search(e->encoder.flac.file, options.do_qlp_coeff_prec_search);
1532                 FLAC__file_encoder_set_do_escape_coding(e->encoder.flac.file, options.do_escape_coding);
1533                 FLAC__file_encoder_set_do_exhaustive_model_search(e->encoder.flac.file, options.do_exhaustive_model_search);
1534                 FLAC__file_encoder_set_min_residual_partition_order(e->encoder.flac.file, options.min_residual_partition_order);
1535                 FLAC__file_encoder_set_max_residual_partition_order(e->encoder.flac.file, options.max_residual_partition_order);
1536                 FLAC__file_encoder_set_rice_parameter_search_dist(e->encoder.flac.file, options.rice_parameter_search_dist);
1537                 FLAC__file_encoder_set_total_samples_estimate(e->encoder.flac.file, e->total_samples_to_encode);
1538                 FLAC__file_encoder_set_metadata(e->encoder.flac.file, (num_metadata > 0)? metadata : 0, num_metadata);
1539                 FLAC__file_encoder_set_progress_callback(e->encoder.flac.file, flac_file_encoder_progress_callback);
1540                 FLAC__file_encoder_set_client_data(e->encoder.flac.file, e);
1541
1542                 FLAC__file_encoder_disable_constant_subframes(e->encoder.flac.file, options.debug.disable_constant_subframes);
1543                 FLAC__file_encoder_disable_fixed_subframes(e->encoder.flac.file, options.debug.disable_fixed_subframes);
1544                 FLAC__file_encoder_disable_verbatim_subframes(e->encoder.flac.file, options.debug.disable_verbatim_subframes);
1545
1546                 if(FLAC__file_encoder_init(e->encoder.flac.file) != FLAC__FILE_ENCODER_OK) {
1547                         print_error_with_state(e, "ERROR initializing encoder");
1548                         if(0 != cuesheet)
1549                                 FLAC__metadata_object_delete(cuesheet);
1550                         return false;
1551                 }
1552         }
1553
1554         if(0 != cuesheet)
1555                 FLAC__metadata_object_delete(cuesheet);
1556
1557         return true;
1558 }
1559
1560 FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], unsigned samples)
1561 {
1562         if(e->replay_gain) {
1563                 if(!grabbag__replaygain_analyze(buffer, e->channels==2, e->bits_per_sample, samples)) {
1564                         flac__utils_printf(stderr, 1, "%s: WARNING, error while calculating ReplayGain\n", e->inbasefilename);
1565                 }
1566         }
1567
1568 #ifdef FLAC__HAS_OGG
1569         if(e->use_ogg) {
1570                 if(e->is_stdout) {
1571                         return OggFLAC__stream_encoder_process(e->encoder.ogg.stream, buffer, samples);
1572                 }
1573                 else {
1574                         return OggFLAC__file_encoder_process(e->encoder.ogg.file, buffer, samples);
1575                 }
1576         }
1577         else
1578 #endif
1579         if(e->is_stdout) {
1580                 return FLAC__stream_encoder_process(e->encoder.flac.stream, buffer, samples);
1581         }
1582         else {
1583                 return FLAC__file_encoder_process(e->encoder.flac.file, buffer, samples);
1584         }
1585 }
1586
1587 FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e)
1588 {
1589         const FLAC__bool only_placeholders = e->is_stdout;
1590         FLAC__bool has_real_points;
1591
1592         if(num_requested_seek_points == 0 && 0 == cuesheet)
1593                 return true;
1594
1595         if(num_requested_seek_points < 0) {
1596                 requested_seek_points = "10s;";
1597                 num_requested_seek_points = 1;
1598         }
1599
1600         if(num_requested_seek_points > 0) {
1601                 if(!grabbag__seektable_convert_specification_to_template(requested_seek_points, only_placeholders, e->total_samples_to_encode, e->sample_rate, e->seek_table_template, &has_real_points))
1602                         return false;
1603         }
1604
1605         if(0 != cuesheet) {
1606                 unsigned i, j;
1607                 const FLAC__StreamMetadata_CueSheet *cs = &cuesheet->data.cue_sheet;
1608                 for(i = 0; i < cs->num_tracks; i++) {
1609                         const FLAC__StreamMetadata_CueSheet_Track *tr = cs->tracks+i;
1610                         for(j = 0; j < tr->num_indices; j++) {
1611                                 if(!FLAC__metadata_object_seektable_template_append_point(e->seek_table_template, tr->offset + tr->indices[j].offset))
1612                                         return false;
1613                                 has_real_points = true;
1614                         }
1615                 }
1616                 if(has_real_points)
1617                         if(!FLAC__metadata_object_seektable_template_sort(e->seek_table_template, /*compact=*/true))
1618                                 return false;
1619         }
1620
1621         if(has_real_points) {
1622                 if(e->is_stdout) {
1623                         flac__utils_printf(stderr, 1, "%s: WARNING, cannot write back seekpoints when encoding to stdout\n", e->inbasefilename);
1624                 }
1625         }
1626
1627         return true;
1628 }
1629
1630 FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, unsigned sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input)
1631 {
1632         /* convert from mm:ss.sss to sample number if necessary */
1633         flac__utils_canonicalize_skip_until_specification(spec, sample_rate);
1634
1635         /* special case: if "--until=-0", use the special value '0' to mean "end-of-stream" */
1636         if(spec->is_relative && spec->value.samples == 0) {
1637                 spec->is_relative = false;
1638                 return true;
1639         }
1640
1641         /* in any other case the total samples in the input must be known */
1642         if(total_samples_in_input == 0) {
1643                 flac__utils_printf(stderr, 1, "%s: ERROR, cannot use --until when input length is unknown\n", inbasefilename);
1644                 return false;
1645         }
1646
1647         FLAC__ASSERT(spec->value_is_samples);
1648
1649         /* convert relative specifications to absolute */
1650         if(spec->is_relative) {
1651                 if(spec->value.samples <= 0)
1652                         spec->value.samples += (FLAC__int64)total_samples_in_input;
1653                 else
1654                         spec->value.samples += skip;
1655                 spec->is_relative = false;
1656         }
1657
1658         /* error check */
1659         if(spec->value.samples < 0) {
1660                 flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before beginning of input\n", inbasefilename);
1661                 return false;
1662         }
1663         if((FLAC__uint64)spec->value.samples <= skip) {
1664                 flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before --skip point\n", inbasefilename);
1665                 return false;
1666         }
1667         if((FLAC__uint64)spec->value.samples > total_samples_in_input) {
1668                 flac__utils_printf(stderr, 1, "%s: ERROR, --until value is after end of input\n", inbasefilename);
1669                 return false;
1670         }
1671
1672         return true;
1673 }
1674
1675 void format_input(FLAC__int32 *dest[], unsigned wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, unsigned channels, unsigned bps)
1676 {
1677         unsigned wide_sample, sample, channel, byte;
1678
1679         if(bps == 8) {
1680                 if(is_unsigned_samples) {
1681                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1682                                 for(channel = 0; channel < channels; channel++, sample++)
1683                                         dest[channel][wide_sample] = (FLAC__int32)ucbuffer_[sample] - 0x80;
1684                 }
1685                 else {
1686                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1687                                 for(channel = 0; channel < channels; channel++, sample++)
1688                                         dest[channel][wide_sample] = (FLAC__int32)scbuffer_[sample];
1689                 }
1690         }
1691         else if(bps == 16) {
1692                 if(is_big_endian != is_big_endian_host_) {
1693                         unsigned char tmp;
1694                         const unsigned bytes = wide_samples * channels * (bps >> 3);
1695                         for(byte = 0; byte < bytes; byte += 2) {
1696                                 tmp = ucbuffer_[byte];
1697                                 ucbuffer_[byte] = ucbuffer_[byte+1];
1698                                 ucbuffer_[byte+1] = tmp;
1699                         }
1700                 }
1701                 if(is_unsigned_samples) {
1702                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1703                                 for(channel = 0; channel < channels; channel++, sample++)
1704                                         dest[channel][wide_sample] = (FLAC__int32)usbuffer_[sample] - 0x8000;
1705                 }
1706                 else {
1707                         for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1708                                 for(channel = 0; channel < channels; channel++, sample++)
1709                                         dest[channel][wide_sample] = (FLAC__int32)ssbuffer_[sample];
1710                 }
1711         }
1712         else if(bps == 24) {
1713                 if(!is_big_endian) {
1714                         unsigned char tmp;
1715                         const unsigned bytes = wide_samples * channels * (bps >> 3);
1716                         for(byte = 0; byte < bytes; byte += 3) {
1717                                 tmp = ucbuffer_[byte];
1718                                 ucbuffer_[byte] = ucbuffer_[byte+2];
1719                                 ucbuffer_[byte+2] = tmp;
1720                         }
1721                 }
1722                 if(is_unsigned_samples) {
1723                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1724                                 for(channel = 0; channel < channels; channel++, sample++) {
1725                                         dest[channel][wide_sample]  = ucbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1726                                         dest[channel][wide_sample] |= ucbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1727                                         dest[channel][wide_sample] |= ucbuffer_[byte++];
1728                                         dest[channel][wide_sample] -= 0x800000;
1729                                 }
1730                 }
1731                 else {
1732                         for(byte = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++)
1733                                 for(channel = 0; channel < channels; channel++, sample++) {
1734                                         dest[channel][wide_sample]  = scbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1735                                         dest[channel][wide_sample] |= ucbuffer_[byte++]; dest[channel][wide_sample] <<= 8;
1736                                         dest[channel][wide_sample] |= ucbuffer_[byte++];
1737                                 }
1738                 }
1739         }
1740         else {
1741                 FLAC__ASSERT(0);
1742         }
1743 }
1744
1745 #ifdef FLAC__HAS_OGG
1746 FLAC__StreamEncoderWriteStatus ogg_stream_encoder_write_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
1747 {
1748         EncoderSession *encoder_session = (EncoderSession*)client_data;
1749
1750         (void)encoder;
1751
1752         encoder_session->bytes_written += bytes;
1753         /*
1754          * With Ogg FLAC we don't get one write callback per frame and
1755          * we don't have a good number for 'samples', so we estimate based
1756          * on the frame number and the knowledge that all blocks (except
1757          * the last) are the same size.
1758          */
1759         (void)samples;
1760         encoder_session->samples_written = (current_frame+1) * encoder_session->blocksize;
1761
1762         if(encoder_session->total_samples_to_encode > 0 && !(current_frame & encoder_session->stats_mask))
1763                 print_stats(encoder_session);
1764
1765         if(flac__utils_fwrite(buffer, sizeof(FLAC__byte), bytes, encoder_session->fout) == bytes)
1766                 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
1767         else
1768                 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
1769 }
1770
1771 void ogg_stream_encoder_metadata_callback(const OggFLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
1772 {
1773         // do nothing, for compatibilty.  soon we will be using the ogg file encoder anyway.
1774         (void)encoder, (void)metadata, (void)client_data;
1775 }
1776
1777 void ogg_file_encoder_progress_callback(const OggFLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data)
1778 {
1779         EncoderSession *encoder_session = (EncoderSession*)client_data;
1780
1781         (void)encoder;
1782
1783         /*
1784          * With Ogg FLAC we don't get a value for 'samples_written', so we
1785          * estimate based on the frames written and the knowledge that all
1786          * blocks (except the last) are the same size.
1787          */
1788         samples_written = frames_written * encoder_session->blocksize;
1789         flac_file_encoder_progress_callback(0, bytes_written, samples_written, frames_written, total_frames_estimate, client_data);
1790 }
1791
1792 #endif
1793
1794 FLAC__StreamEncoderWriteStatus flac_stream_encoder_write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
1795 {
1796         EncoderSession *encoder_session = (EncoderSession*)client_data;
1797
1798         (void)encoder;
1799
1800         encoder_session->bytes_written += bytes;
1801         encoder_session->samples_written += samples;
1802
1803         if(samples && encoder_session->total_samples_to_encode > 0 && !(current_frame & encoder_session->stats_mask))
1804                 print_stats(encoder_session);
1805
1806         if(flac__utils_fwrite(buffer, sizeof(FLAC__byte), bytes, encoder_session->fout) == bytes)
1807                 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
1808         else
1809                 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
1810 }
1811
1812 void flac_stream_encoder_metadata_callback(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetadata *metadata, void *client_data)
1813 {
1814         /*
1815          * Nothing to do; if we get here, we're decoding to stdout, in
1816          * which case we can't seek backwards to write new metadata.
1817          */
1818         (void)encoder, (void)metadata, (void)client_data;
1819 }
1820
1821 void flac_file_encoder_progress_callback(const FLAC__FileEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, unsigned frames_written, unsigned total_frames_estimate, void *client_data)
1822 {
1823         EncoderSession *encoder_session = (EncoderSession*)client_data;
1824
1825         (void)encoder, (void)total_frames_estimate;
1826
1827         encoder_session->bytes_written = bytes_written;
1828         encoder_session->samples_written = samples_written;
1829
1830         if(encoder_session->total_samples_to_encode > 0 && !((frames_written-1) & encoder_session->stats_mask))
1831                 print_stats(encoder_session);
1832 }
1833
1834 FLAC__bool parse_cuesheet_(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset)
1835 {
1836         FILE *f;
1837         unsigned last_line_read;
1838         const char *error_message;
1839
1840         if(0 == cuesheet_filename)
1841                 return true;
1842
1843         if(lead_out_offset == 0) {
1844                 flac__utils_printf(stderr, 1, "%s: ERROR cannot import cuesheet when the number of input samples to encode is unknown\n", inbasefilename);
1845                 return false;
1846         }
1847
1848         if(0 == (f = fopen(cuesheet_filename, "r"))) {
1849                 flac__utils_printf(stderr, 1, "%s: ERROR opening cuesheet \"%s\" for reading\n", inbasefilename, cuesheet_filename);
1850                 return false;
1851         }
1852
1853         *cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, is_cdda, lead_out_offset);
1854
1855         fclose(f);
1856
1857         if(0 == *cuesheet) {
1858                 flac__utils_printf(stderr, 1, "%s: ERROR parsing cuesheet \"%s\" on line %u: %s\n", inbasefilename, cuesheet_filename, last_line_read, error_message);
1859                 return false;
1860         }
1861
1862         return true;
1863 }
1864
1865 void print_stats(const EncoderSession *encoder_session)
1866 {
1867         const FLAC__uint64 samples_written = min(encoder_session->total_samples_to_encode, encoder_session->samples_written);
1868 #if defined _MSC_VER || defined __MINGW32__
1869         /* with MSVC you have to spoon feed it the casting */
1870         const double progress = (double)(FLAC__int64)samples_written / (double)(FLAC__int64)encoder_session->total_samples_to_encode;
1871         const double ratio = (double)(FLAC__int64)encoder_session->bytes_written / ((double)(FLAC__int64)encoder_session->unencoded_size * min(1.0, progress));
1872 #else
1873         const double progress = (double)samples_written / (double)encoder_session->total_samples_to_encode;
1874         const double ratio = (double)encoder_session->bytes_written / ((double)encoder_session->unencoded_size * min(1.0, progress));
1875 #endif
1876
1877
1878         if(samples_written == encoder_session->total_samples_to_encode) {
1879                 flac__utils_printf(stderr, 2, "\r%s:%s wrote %u bytes, ratio=%0.3f",
1880                         encoder_session->inbasefilename,
1881                         encoder_session->verify? " Verify OK," : "",
1882                         (unsigned)encoder_session->bytes_written,
1883                         ratio
1884                 );
1885         }
1886         else {
1887                 flac__utils_printf(stderr, 2, "\r%s: %u%% complete, ratio=%0.3f", encoder_session->inbasefilename, (unsigned)floor(progress * 100.0 + 0.5), ratio);
1888         }
1889 }
1890
1891 void print_error_with_state(const EncoderSession *e, const char *message)
1892 {
1893         const int ilen = strlen(e->inbasefilename) + 1;
1894         const char *state_string;
1895
1896         flac__utils_printf(stderr, 1, "\n%s: %s\n", e->inbasefilename, message);
1897
1898 #ifdef FLAC__HAS_OGG
1899         if(e->use_ogg) {
1900                 if(e->is_stdout) {
1901                         state_string = OggFLAC__stream_encoder_get_resolved_state_string(e->encoder.ogg.stream);
1902                 }
1903                 else {
1904                         state_string = OggFLAC__file_encoder_get_resolved_state_string(e->encoder.ogg.file);
1905                 }
1906         }
1907         else
1908 #endif
1909         if(e->is_stdout) {
1910                 state_string = FLAC__stream_encoder_get_resolved_state_string(e->encoder.flac.stream);
1911         }
1912         else {
1913                 state_string = FLAC__file_encoder_get_resolved_state_string(e->encoder.flac.file);
1914         }
1915
1916         flac__utils_printf(stderr, 1, "%*s state = %s\n", ilen, "", state_string);
1917
1918         /* print out some more info for some errors: */
1919         if(0 == strcmp(state_string, FLAC__StreamEncoderStateString[FLAC__STREAM_ENCODER_NOT_STREAMABLE])) {
1920                 flac__utils_printf(stderr, 1,
1921                         "\n"
1922                         "The encoding parameters specified do not conform to the FLAC Subset and may not\n"
1923                         "be streamable or playable in hardware devices.  Add --lax to the command-line\n"
1924                         "options to encode with these parameters.\n"
1925                 );
1926         }
1927         else if(
1928                 0 == strcmp(state_string, FLAC__FileEncoderStateString[FLAC__FILE_ENCODER_FATAL_ERROR_WHILE_WRITING])
1929 #ifdef FLAC__HAS_OGG
1930                 || 0 == strcmp(state_string, OggFLAC__FileEncoderStateString[OggFLAC__FILE_ENCODER_FATAL_ERROR_WHILE_WRITING])
1931 #endif
1932         ) {
1933                 flac__utils_printf(stderr, 1,
1934                         "\n"
1935                         "An error occurred while writing; the most common cause is that the disk is full.\n"
1936                 );
1937         }
1938         else if(
1939                 0 == strcmp(state_string, FLAC__FileEncoderStateString[FLAC__FILE_ENCODER_ERROR_OPENING_FILE])
1940 #ifdef FLAC__HAS_OGG
1941                 || 0 == strcmp(state_string, OggFLAC__FileEncoderStateString[OggFLAC__FILE_ENCODER_ERROR_OPENING_FILE])
1942 #endif
1943         ) {
1944                 flac__utils_printf(stderr, 1,
1945                         "\n"
1946                         "An error occurred opening the output file; it is likely that the output\n"
1947                         "directory does not exist or is not writable, the output file already exists and\n"
1948                         "is not writable, or the disk is full.\n"
1949                 );
1950         }
1951 }
1952
1953 void print_verify_error(EncoderSession *e)
1954 {
1955         FLAC__uint64 absolute_sample;
1956         unsigned frame_number;
1957         unsigned channel;
1958         unsigned sample;
1959         FLAC__int32 expected;
1960         FLAC__int32 got;
1961
1962 #ifdef FLAC__HAS_OGG
1963         if(e->use_ogg) {
1964                 if(e->is_stdout) {
1965                         OggFLAC__stream_encoder_get_verify_decoder_error_stats(e->encoder.ogg.stream, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1966                 }
1967                 else {
1968                         OggFLAC__file_encoder_get_verify_decoder_error_stats(e->encoder.ogg.file, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1969                 }
1970         }
1971         else
1972 #endif
1973         if(e->is_stdout) {
1974                 FLAC__stream_encoder_get_verify_decoder_error_stats(e->encoder.flac.stream, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1975         }
1976         else {
1977                 FLAC__file_encoder_get_verify_decoder_error_stats(e->encoder.flac.file, &absolute_sample, &frame_number, &channel, &sample, &expected, &got);
1978         }
1979
1980         flac__utils_printf(stderr, 1, "%s: ERROR: mismatch in decoded data, verify FAILED!\n", e->inbasefilename);
1981         flac__utils_printf(stderr, 1, "       Absolute sample=%u, frame=%u, channel=%u, sample=%u, expected %d, got %d\n", (unsigned)absolute_sample, frame_number, channel, sample, expected, got);
1982         flac__utils_printf(stderr, 1, "       In all known cases, verify errors are caused by hardware problems,\n");
1983         flac__utils_printf(stderr, 1, "       usually overclocking or bad RAM.  Delete %s\n", e->inbasefilename);
1984         flac__utils_printf(stderr, 1, "       and repeat the flac command exactly as before.  If it does not give a\n");
1985         flac__utils_printf(stderr, 1, "       verify error in the exact same place each time you try it, then there is\n");
1986         flac__utils_printf(stderr, 1, "       a problem with your hardware.  If it does, keep the bad FLAC file and\n");
1987         flac__utils_printf(stderr, 1, "       submit a bug report to:\n");
1988         flac__utils_printf(stderr, 1, "           http://sourceforge.net/bugs/?func=addbug&group_id=13478\n");
1989         flac__utils_printf(stderr, 1, "       Make sure to include an email contact in the comment and/or use the\n");
1990         flac__utils_printf(stderr, 1, "       \"Monitor\" feature to monitor the bug status.\n");
1991         flac__utils_printf(stderr, 1, "Verify FAILED!  Do not trust %s\n", e->outfilename);
1992 }
1993
1994 FLAC__bool read_little_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
1995 {
1996         size_t bytes_read = fread(val, 1, 2, f);
1997
1998         if(bytes_read == 0) {
1999                 if(!eof_ok) {
2000                         flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
2001                         return false;
2002                 }
2003                 else
2004                         return true;
2005         }
2006         else if(bytes_read < 2) {
2007                 flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
2008                 return false;
2009         }
2010         else {
2011                 if(is_big_endian_host_) {
2012                         FLAC__byte tmp, *b = (FLAC__byte*)val;
2013                         tmp = b[1]; b[1] = b[0]; b[0] = tmp;
2014                 }
2015                 return true;
2016         }
2017 }
2018
2019 FLAC__bool read_little_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
2020 {
2021         size_t bytes_read = fread(val, 1, 4, f);
2022
2023         if(bytes_read == 0) {
2024                 if(!eof_ok) {
2025                         flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
2026                         return false;
2027                 }
2028                 else
2029                         return true;
2030         }
2031         else if(bytes_read < 4) {
2032                 flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
2033                 return false;
2034         }
2035         else {
2036                 if(is_big_endian_host_) {
2037                         FLAC__byte tmp, *b = (FLAC__byte*)val;
2038                         tmp = b[3]; b[3] = b[0]; b[0] = tmp;
2039                         tmp = b[2]; b[2] = b[1]; b[1] = tmp;
2040                 }
2041                 return true;
2042         }
2043 }
2044
2045 FLAC__bool read_big_endian_uint16(FILE *f, FLAC__uint16 *val, FLAC__bool eof_ok, const char *fn)
2046 {
2047         unsigned char buf[4];
2048         size_t bytes_read= fread(buf, 1, 2, f);
2049
2050         if(bytes_read==0U && eof_ok)
2051                 return true;
2052         else if(bytes_read<2U) {
2053                 flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
2054                 return false;
2055         }
2056
2057         /* this is independent of host endianness */
2058         *val= (FLAC__uint16)(buf[0])<<8 | buf[1];
2059
2060         return true;
2061 }
2062
2063 FLAC__bool read_big_endian_uint32(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
2064 {
2065         unsigned char buf[4];
2066         size_t bytes_read= fread(buf, 1, 4, f);
2067
2068         if(bytes_read==0U && eof_ok)
2069                 return true;
2070         else if(bytes_read<4U) {
2071                 flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
2072                 return false;
2073         }
2074
2075         /* this is independent of host endianness */
2076         *val= (FLAC__uint32)(buf[0])<<24 | (FLAC__uint32)(buf[1])<<16 |
2077                 (FLAC__uint32)(buf[2])<<8 | buf[3];
2078
2079         return true;
2080 }
2081
2082 FLAC__bool read_sane_extended(FILE *f, FLAC__uint32 *val, FLAC__bool eof_ok, const char *fn)
2083         /* Read an IEEE 754 80-bit (aka SANE) extended floating point value from 'f',
2084          * convert it into an integral value and store in 'val'.  Return false if only
2085          * between 1 and 9 bytes remain in 'f', if 0 bytes remain in 'f' and 'eof_ok' is
2086          * false, or if the value is negative, between zero and one, or too large to be
2087          * represented by 'val'; return true otherwise.
2088          */
2089 {
2090         unsigned int i;
2091         unsigned char buf[10];
2092         size_t bytes_read= fread(buf, 1U, 10U, f);
2093         FLAC__int16 e= ((FLAC__uint16)(buf[0])<<8 | (FLAC__uint16)(buf[1]))-0x3FFF;
2094         FLAC__int16 shift= 63-e;
2095         FLAC__uint64 p= 0U;
2096
2097         if(bytes_read==0U && eof_ok)
2098                 return true;
2099         else if(bytes_read<10U) {
2100                 flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn);
2101                 return false;
2102         }
2103         else if((buf[0]>>7)==1U || e<0 || e>63) {
2104                 flac__utils_printf(stderr, 1, "%s: ERROR: invalid floating-point value\n", fn);
2105                 return false;
2106         }
2107
2108         for(i= 0U; i<8U; ++i)
2109                 p|= (FLAC__uint64)(buf[i+2])<<(56U-i*8);
2110         *val= (FLAC__uint32)((p>>shift)+(p>>(shift-1) & 0x1));
2111
2112         return true;
2113 }
2114
2115 FLAC__bool fskip_ahead(FILE *f, FLAC__uint64 offset)
2116 {
2117         static unsigned char dump[8192];
2118
2119         while(offset > 0) {
2120                 long need = (long)min(offset, LONG_MAX);
2121                 if(fseek(f, need, SEEK_CUR) < 0) {
2122                         need = (long)min(offset, sizeof(dump));
2123                         if(fread(dump, need, 1, f) < 1)
2124                                 return false;
2125                 }
2126                 offset -= need;
2127         }
2128         return true;
2129 }