src/wav.c

   1 /*
   2 ** Copyright (C) 1999-2016 Erik de Castro Lopo <erikd@mega-nerd.com>
   3 ** Copyright (C) 2004-2005 David Viens <davidv@plogue.com>
   4 **
   5 ** This program is free software; you can redistribute it and/or modify
   6 ** it under the terms of the GNU Lesser General Public License as published by
   7 ** the Free Software Foundation; either version 2.1 of the License, or
   8 ** (at your option) any later version.
   9 **
  10 ** This program is distributed in the hope that it will be useful,
  11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 ** GNU Lesser General Public License for more details.
  14 **
  15 ** You should have received a copy of the GNU Lesser General Public License
  16 ** along with this program; if not, write to the Free Software
  17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 */
  19
  20 #include        "sfconfig.h"
  21
  22 #include        <stdio.h>
  23 #include        <stdlib.h>
  24 #include        <string.h>
  25 #include        <ctype.h>
  26 #include        <time.h>
  27 #include        <inttypes.h>
  28
  29 #include        "sndfile.h"
  30 #include        "sfendian.h"
  31 #include        "common.h"
  32 #include        "wavlike.h"
  33
  34 /*------------------------------------------------------------------------------
  35  * Macros to handle big/little endian issues.
  36  */
  37
  38 #define RIFF_MARKER             (MAKE_MARKER ('R', 'I', 'F', 'F'))
  39 #define RIFX_MARKER             (MAKE_MARKER ('R', 'I', 'F', 'X'))
  40 #define WAVE_MARKER             (MAKE_MARKER ('W', 'A', 'V', 'E'))
  41 #define fmt_MARKER              (MAKE_MARKER ('f', 'm', 't', ' '))
  42 #define fact_MARKER             (MAKE_MARKER ('f', 'a', 'c', 't'))
  43
  44 #define cue_MARKER              (MAKE_MARKER ('c', 'u', 'e', ' '))
  45 #define slnt_MARKER             (MAKE_MARKER ('s', 'l', 'n', 't'))
  46 #define wavl_MARKER             (MAKE_MARKER ('w', 'a', 'v', 'l'))
  47 #define plst_MARKER             (MAKE_MARKER ('p', 'l', 's', 't'))
  48 #define smpl_MARKER             (MAKE_MARKER ('s', 'm', 'p', 'l'))
  49 #define iXML_MARKER             (MAKE_MARKER ('i', 'X', 'M', 'L'))
  50 #define levl_MARKER             (MAKE_MARKER ('l', 'e', 'v', 'l'))
  51 #define MEXT_MARKER             (MAKE_MARKER ('M', 'E', 'X', 'T'))
  52 #define acid_MARKER             (MAKE_MARKER ('a', 'c', 'i', 'd'))
  53 #define strc_MARKER             (MAKE_MARKER ('s', 't', 'r', 'c'))
  54 #define afsp_MARKER             (MAKE_MARKER ('a', 'f', 's', 'p'))
  55 #define clm_MARKER              (MAKE_MARKER ('c', 'l', 'm', ' '))
  56 #define elmo_MARKER             (MAKE_MARKER ('e', 'l', 'm', 'o'))
  57 #define FLLR_MARKER             (MAKE_MARKER ('F', 'L', 'L', 'R'))
  58
  59 #define minf_MARKER             (MAKE_MARKER ('m', 'i', 'n', 'f'))
  60 #define elm1_MARKER             (MAKE_MARKER ('e', 'l', 'm', '1'))
  61 #define regn_MARKER             (MAKE_MARKER ('r', 'e', 'g', 'n'))
  62 #define ovwf_MARKER             (MAKE_MARKER ('o', 'v', 'w', 'f'))
  63 #define umid_MARKER             (MAKE_MARKER ('u', 'm', 'i', 'd'))
  64 #define SyLp_MARKER             (MAKE_MARKER ('S', 'y', 'L', 'p'))
  65 #define Cr8r_MARKER             (MAKE_MARKER ('C', 'r', '8', 'r'))
  66 #define JUNK_MARKER             (MAKE_MARKER ('J', 'U', 'N', 'K'))
  67 #define PMX_MARKER              (MAKE_MARKER ('_', 'P', 'M', 'X'))
  68 #define inst_MARKER             (MAKE_MARKER ('i', 'n', 's', 't'))
  69 #define AFAn_MARKER             (MAKE_MARKER ('A', 'F', 'A', 'n'))
  70
  71
  72 /* Weird WAVPACK marker which can show up at the start of the DATA section. */
  73 #define wvpk_MARKER (MAKE_MARKER ('w', 'v', 'p', 'k'))
  74 #define OggS_MARKER (MAKE_MARKER ('O', 'g', 'g', 'S'))
  75
  76 #define WAVLIKE_PEAK_CHUNK_SIZE(ch)     (2 * sizeof (int) + ch * (sizeof (float) + sizeof (int)))
  77
  78
  79 enum
  80 {       HAVE_RIFF       = 0x01,
  81         HAVE_WAVE       = 0x02,
  82         HAVE_fmt        = 0x04,
  83         HAVE_fact       = 0x08,
  84         HAVE_PEAK       = 0x10,
  85         HAVE_data       = 0x20,
  86         HAVE_other      = 0x80000000
  87 } ;
  88
  89
  90
  91 /*  known WAVEFORMATEXTENSIBLE GUIDS  */
  92 static const EXT_SUBFORMAT MSGUID_SUBTYPE_PCM =
  93 {       0x00000001, 0x0000, 0x0010, {   0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
  94 } ;
  95
  96 #if 0
  97 static const EXT_SUBFORMAT MSGUID_SUBTYPE_MS_ADPCM =
  98 {       0x00000002, 0x0000, 0x0010, {   0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
  99 } ;
 100 #endif
 101
 102 static const EXT_SUBFORMAT MSGUID_SUBTYPE_IEEE_FLOAT =
 103 {       0x00000003, 0x0000, 0x0010, {   0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
 104 } ;
 105
 106 static const EXT_SUBFORMAT MSGUID_SUBTYPE_ALAW =
 107 {       0x00000006, 0x0000, 0x0010, {   0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
 108 } ;
 109
 110 static const EXT_SUBFORMAT MSGUID_SUBTYPE_MULAW =
 111 {       0x00000007, 0x0000, 0x0010, {   0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
 112 } ;
 113
 114 /*
 115 ** the next two are from
 116 ** http://dream.cs.bath.ac.uk/researchdev/wave-ex/bformat.html
 117 */
 118 static const EXT_SUBFORMAT MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_PCM =
 119 {       0x00000001, 0x0721, 0x11d3, {   0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00 }
 120 } ;
 121
 122 static const EXT_SUBFORMAT MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_IEEE_FLOAT =
 123 {       0x00000003, 0x0721, 0x11d3, {   0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00 }
 124 } ;
 125
 126
 127 #if 0
 128 /* maybe interesting one day to read the following through sf_read_raw */
 129 /* http://www.bath.ac.uk/~masrwd/pvocex/pvocex.html */
 130 static const EXT_SUBFORMAT MSGUID_SUBTYPE_PVOCEX =
 131 {       0x8312B9C2, 0x2E6E, 0x11d4, {   0xA8, 0x24, 0xDE, 0x5B, 0x96, 0xC3, 0xAB, 0x21 }
 132 } ;
 133 #endif
 134
 135 /*------------------------------------------------------------------------------
 136 ** Private static functions.
 137 */
 138
 139 static int      wav_read_header         (SF_PRIVATE *psf, int *blockalign, int *framesperblock) ;
 140 static int      wav_write_header        (SF_PRIVATE *psf, int calc_length) ;
 141
 142 static int      wav_write_tailer (SF_PRIVATE *psf) ;
 143 static int      wav_command (SF_PRIVATE *psf, int command, void *data, int datasize) ;
 144 static int      wav_close (SF_PRIVATE *psf) ;
 145
 146 static int      wav_read_smpl_chunk (SF_PRIVATE *psf, uint32_t chunklen) ;
 147 static int      wav_read_acid_chunk (SF_PRIVATE *psf, uint32_t chunklen) ;
 148
 149 static int wav_set_chunk (SF_PRIVATE *psf, const SF_CHUNK_INFO * chunk_info) ;
 150 static SF_CHUNK_ITERATOR * wav_next_chunk_iterator (SF_PRIVATE *psf, SF_CHUNK_ITERATOR * iterator) ;
 151 static int wav_get_chunk_size (SF_PRIVATE *psf, const SF_CHUNK_ITERATOR * iterator, SF_CHUNK_INFO * chunk_info) ;
 152 static int wav_get_chunk_data (SF_PRIVATE *psf, const SF_CHUNK_ITERATOR * iterator, SF_CHUNK_INFO * chunk_info) ;
 153
 154 /*------------------------------------------------------------------------------
 155 ** Public function.
 156 */
 157
 158 int
 159 wav_open        (SF_PRIVATE *psf)
 160 {       WAVLIKE_PRIVATE * wpriv ;
 161         int     format, subformat, error, blockalign = 0, framesperblock = 0 ;
 162
 163         if ((wpriv = calloc (1, sizeof (WAVLIKE_PRIVATE))) == NULL)
 164                 return SFE_MALLOC_FAILED ;
 165         psf->container_data = wpriv ;
 166
 167         wpriv->wavex_ambisonic = SF_AMBISONIC_NONE ;
 168         psf->strings.flags = SF_STR_ALLOW_START | SF_STR_ALLOW_END ;
 169
 170         if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
 171         {       if ((error = wav_read_header (psf, &blockalign, &framesperblock)))
 172                         return error ;
 173
 174                 psf->next_chunk_iterator = wav_next_chunk_iterator ;
 175                 psf->get_chunk_size = wav_get_chunk_size ;
 176                 psf->get_chunk_data = wav_get_chunk_data ;
 177                 } ;
 178
 179         subformat = SF_CODEC (psf->sf.format) ;
 180
 181         if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
 182         {       if (psf->is_pipe)
 183                         return SFE_NO_PIPE_WRITE ;
 184
 185                 wpriv->wavex_ambisonic = SF_AMBISONIC_NONE ;
 186
 187                 format = SF_CONTAINER (psf->sf.format) ;
 188                 if (format != SF_FORMAT_WAV && format != SF_FORMAT_WAVEX)
 189                         return  SFE_BAD_OPEN_FORMAT ;
 190
 191                 psf->blockwidth = psf->bytewidth * psf->sf.channels ;
 192
 193                 /* RIFF WAVs are little-endian, RIFX WAVs are big-endian, default to little */
 194                 psf->endian = SF_ENDIAN (psf->sf.format) ;
 195                 if (CPU_IS_BIG_ENDIAN && psf->endian == SF_ENDIAN_CPU)
 196                         psf->endian = SF_ENDIAN_BIG ;
 197                 else if (psf->endian != SF_ENDIAN_BIG)
 198                         psf->endian = SF_ENDIAN_LITTLE ;
 199
 200                 if (psf->file.mode != SFM_RDWR || psf->filelength < 44)
 201                 {       psf->filelength = 0 ;
 202                         psf->datalength = 0 ;
 203                         psf->dataoffset = 0 ;
 204                         psf->sf.frames = 0 ;
 205                         } ;
 206
 207                 if (subformat == SF_FORMAT_IMA_ADPCM || subformat == SF_FORMAT_MS_ADPCM)
 208                 {       blockalign = wavlike_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
 209                         framesperblock = -1 ; /* Corrected later. */
 210                         } ;
 211
 212                 /* By default, add the peak chunk to floating point files. Default behaviour
 213                 ** can be switched off using sf_command (SFC_SET_PEAK_CHUNK, SF_FALSE).
 214                 */
 215                 if (psf->file.mode == SFM_WRITE && (subformat == SF_FORMAT_FLOAT || subformat == SF_FORMAT_DOUBLE))
 216                 {       if ((psf->peak_info = peak_info_calloc (psf->sf.channels)) == NULL)
 217                                 return SFE_MALLOC_FAILED ;
 218                         psf->peak_info->peak_loc = SF_PEAK_START ;
 219                         } ;
 220
 221                 psf->write_header       = wav_write_header ;
 222                 psf->set_chunk          = wav_set_chunk ;
 223                 } ;
 224
 225         psf->container_close = wav_close ;
 226         psf->command = wav_command ;
 227
 228         switch (subformat)
 229         {       case SF_FORMAT_PCM_U8 :
 230                 case SF_FORMAT_PCM_16 :
 231                 case SF_FORMAT_PCM_24 :
 232                 case SF_FORMAT_PCM_32 :
 233                                         error = pcm_init (psf) ;
 234                                         break ;
 235
 236                 case SF_FORMAT_ULAW :
 237                                         error = ulaw_init (psf) ;
 238                                         break ;
 239
 240                 case SF_FORMAT_ALAW :
 241                                         error = alaw_init (psf) ;
 242                                         break ;
 243
 244                 /* Lite remove start */
 245                 case SF_FORMAT_FLOAT :
 246                                         error = float32_init (psf) ;
 247                                         break ;
 248
 249                 case SF_FORMAT_DOUBLE :
 250                                         error = double64_init (psf) ;
 251                                         break ;
 252
 253                 case SF_FORMAT_IMA_ADPCM :
 254                                         error = wavlike_ima_init (psf, blockalign, framesperblock) ;
 255                                         break ;
 256
 257                 case SF_FORMAT_MS_ADPCM :
 258                                         error = wavlike_msadpcm_init (psf, blockalign, framesperblock) ;
 259                                         break ;
 260
 261                 case SF_FORMAT_G721_32 :
 262                                         error = g72x_init (psf) ;
 263                                         break ;
 264                 /* Lite remove end */
 265
 266                 case SF_FORMAT_GSM610 :
 267                                         error = gsm610_init (psf) ;
 268                                         break ;
 269
 270                 default :       return SFE_UNIMPLEMENTED ;
 271                 } ;
 272
 273         if (psf->file.mode == SFM_WRITE || (psf->file.mode == SFM_RDWR && psf->filelength == 0))
 274                 return psf->write_header (psf, SF_FALSE) ;
 275
 276         return error ;
 277 } /* wav_open */
 278
 279 /*=========================================================================
 280 ** Private functions.
 281 */
 282
 283 static int
 284 wav_read_header (SF_PRIVATE *psf, int *blockalign, int *framesperblock)
 285 {       WAVLIKE_PRIVATE *wpriv ;
 286         WAV_FMT         *wav_fmt ;
 287         FACT_CHUNK      fact_chunk ;
 288         uint32_t        marker, chunk_size = 0, RIFFsize = 0, done = 0 ;
 289         int                     parsestage = 0, error, format = 0 ;
 290
 291         if (psf->is_pipe == 0 && psf->filelength > SF_PLATFORM_S64 (0xffffffff))
 292                 psf_log_printf (psf, "Warning : filelength > 0xffffffff. This is bad!!!!\n") ;
 293
 294         if ((wpriv = psf->container_data) == NULL)
 295                 return SFE_INTERNAL ;
 296         wav_fmt = &wpriv->wav_fmt ;
 297
 298         /* Set position to start of file to begin reading header. */
 299         psf_binheader_readf (psf, "pmj", 0, &marker, -4) ;
 300         psf->header.indx = 0 ;
 301
 302         /* RIFX signifies big-endian format for all header and data  to prevent
 303         ** lots of code copying here, we'll set the psf->rwf_endian flag once here,
 304         ** and never specify endian-ness for all other header ops/
 305         */
 306         psf->rwf_endian = (marker == RIFF_MARKER) ? SF_ENDIAN_LITTLE : SF_ENDIAN_BIG ;
 307
 308         while (! done)
 309         {       size_t jump = chunk_size & 1 ;
 310
 311                 marker = chunk_size = 0 ;
 312                 psf_binheader_readf (psf, "jm4", jump, &marker, &chunk_size) ;
 313                 if (marker == 0)
 314                 {       sf_count_t pos = psf_ftell (psf) ;
 315                         psf_log_printf (psf, "Have 0 marker at position %D (0x%x).\n", pos, pos) ;
 316                         break ;
 317                         } ;
 318
 319                 psf_store_read_chunk_u32 (&psf->rchunks, marker, psf_ftell (psf), chunk_size) ;
 320
 321                 switch (marker)
 322                 {       case RIFF_MARKER :
 323                         case RIFX_MARKER :
 324                                         if (parsestage)
 325                                                 return SFE_WAV_NO_RIFF ;
 326
 327                                         parsestage |= HAVE_RIFF ;
 328
 329                                         RIFFsize = chunk_size ;
 330
 331                                         if (psf->fileoffset > 0 && psf->filelength > RIFFsize + 8)
 332                                         {       /* Set file length. */
 333                                                 psf->filelength = RIFFsize + 8 ;
 334                                                 if (marker == RIFF_MARKER)
 335                                                         psf_log_printf (psf, "RIFF : %u\n", RIFFsize) ;
 336                                                 else
 337                                                         psf_log_printf (psf, "RIFX : %u\n", RIFFsize) ;
 338                                                 }
 339                                         else if (psf->filelength < RIFFsize + 2 * SIGNED_SIZEOF (marker))
 340                                         {       if (marker == RIFF_MARKER)
 341                                                         psf_log_printf (psf, "RIFF : %u (should be %D)\n", RIFFsize, psf->filelength - 2 * SIGNED_SIZEOF (marker)) ;
 342                                                 else
 343                                                         psf_log_printf (psf, "RIFX : %u (should be %D)\n", RIFFsize, psf->filelength - 2 * SIGNED_SIZEOF (marker)) ;
 344
 345                                                 RIFFsize = psf->filelength - 2 * SIGNED_SIZEOF (RIFFsize) ;
 346                                                 }
 347                                         else
 348                                         {       if (marker == RIFF_MARKER)
 349                                                         psf_log_printf (psf, "RIFF : %u\n", RIFFsize) ;
 350                                                 else
 351                                                         psf_log_printf (psf, "RIFX : %u\n", RIFFsize) ;
 352                                         } ;
 353
 354                                         psf_binheader_readf (psf, "m", &marker) ;
 355                                         if (marker != WAVE_MARKER)
 356                                                 return SFE_WAV_NO_WAVE ;
 357                                         parsestage |= HAVE_WAVE ;
 358                                         psf_log_printf (psf, "WAVE\n") ;
 359                                         chunk_size = 0 ;
 360                                         break ;
 361
 362                         case fmt_MARKER :
 363                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE)) != (HAVE_RIFF | HAVE_WAVE))
 364                                                 return SFE_WAV_NO_FMT ;
 365
 366                                         /* If this file has a SECOND fmt chunk, I don't want to know about it. */
 367                                         if (parsestage & HAVE_fmt)
 368                                                 break ;
 369
 370                                         parsestage |= HAVE_fmt ;
 371
 372                                         psf_log_printf (psf, "fmt  : %d\n", chunk_size) ;
 373
 374                                         if ((error = wavlike_read_fmt_chunk (psf, chunk_size)))
 375                                                 return error ;
 376
 377                                         format = wav_fmt->format ;
 378                                         break ;
 379
 380                         case data_MARKER :
 381                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE | HAVE_fmt)) != (HAVE_RIFF | HAVE_WAVE | HAVE_fmt))
 382                                                 return SFE_WAV_NO_DATA ;
 383
 384                                         if (psf->file.mode == SFM_RDWR && (parsestage & HAVE_other) != 0)
 385                                                 return SFE_RDWR_BAD_HEADER ;
 386
 387                                         parsestage |= HAVE_data ;
 388
 389                                         psf->datalength = chunk_size ;
 390                                         if (psf->datalength & 1)
 391                                                 psf_log_printf (psf, "*** 'data' chunk should be an even number of bytes in length.\n") ;
 392
 393                                         psf->dataoffset = psf_ftell (psf) ;
 394
 395                                         if (psf->dataoffset > 0)
 396                                         {       if (chunk_size == 0 && RIFFsize == 8 && psf->filelength > 44)
 397                                                 {       psf_log_printf (psf, "*** Looks like a WAV file which wasn't closed properly. Fixing it.\n") ;
 398                                                         psf->datalength = psf->filelength - psf->dataoffset ;
 399                                                         } ;
 400
 401                                                 if (psf->datalength > psf->filelength - psf->dataoffset)
 402                                                 {       psf_log_printf (psf, "data : %D (should be %D)\n", psf->datalength, psf->filelength - psf->dataoffset) ;
 403                                                         psf->datalength = psf->filelength - psf->dataoffset ;
 404                                                         }
 405                                                 else
 406                                                         psf_log_printf (psf, "data : %D\n", psf->datalength) ;
 407
 408                                                 /* Only set dataend if there really is data at the end. */
 409                                                 if (psf->datalength + psf->dataoffset < psf->filelength)
 410                                                         psf->dataend = psf->datalength + psf->dataoffset ;
 411
 412                                                 psf->datalength += chunk_size & 1 ;
 413                                                 chunk_size = 0 ;
 414                                                 } ;
 415
 416                                         if (! psf->sf.seekable || psf->dataoffset < 0)
 417                                                 break ;
 418
 419                                         /* Seek past data and continue reading header. */
 420                                         psf_fseek (psf, psf->datalength, SEEK_CUR) ;
 421
 422                                         if (psf_ftell (psf) != psf->datalength + psf->dataoffset)
 423                                                 psf_log_printf (psf, "*** psf_fseek past end error ***\n") ;
 424                                         break ;
 425
 426                         case fact_MARKER :
 427                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE)) != (HAVE_RIFF | HAVE_WAVE))
 428                                                 return SFE_WAV_BAD_FACT ;
 429
 430                                         parsestage |= HAVE_fact ;
 431
 432                                         if ((parsestage & HAVE_fmt) != HAVE_fmt)
 433                                                 psf_log_printf (psf, "*** Should have 'fmt ' chunk before 'fact'\n") ;
 434
 435                                         psf_binheader_readf (psf, "4", & (fact_chunk.frames)) ;
 436
 437                                         if (chunk_size > SIGNED_SIZEOF (fact_chunk))
 438                                                 psf_binheader_readf (psf, "j", (int) (chunk_size - SIGNED_SIZEOF (fact_chunk))) ;
 439
 440                                         if (chunk_size)
 441                                                 psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 442                                         else
 443                                                 psf_log_printf (psf, "%M : %u (should not be zero)\n", marker, chunk_size) ;
 444
 445                                         psf_log_printf (psf, "  frames  : %d\n", fact_chunk.frames) ;
 446                                         break ;
 447
 448                         case PEAK_MARKER :
 449                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE | HAVE_fmt)) != (HAVE_RIFF | HAVE_WAVE | HAVE_fmt))
 450                                                 return SFE_WAV_PEAK_B4_FMT ;
 451
 452                                         parsestage |= HAVE_PEAK ;
 453
 454                                         psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 455                                         if ((error = wavlike_read_peak_chunk (psf, chunk_size)) != 0)
 456                                                 return error ;
 457                                         psf->peak_info->peak_loc = ((parsestage & HAVE_data) == 0) ? SF_PEAK_START : SF_PEAK_END ;
 458                                         break ;
 459
 460                         case cue_MARKER :
 461                                         parsestage |= HAVE_other ;
 462
 463                                         {       uint32_t thisread, bytesread, cue_count, position, offset ;
 464                                                 int id, chunk_id, chunk_start, block_start, cue_index ;
 465
 466                                                 bytesread = psf_binheader_readf (psf, "4", &cue_count) ;
 467                                                 psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 468
 469                                                 if (cue_count > 1000)
 470                                                 {       psf_log_printf (psf, "  Count : %u (skipping)\n", cue_count) ;
 471                                                         psf_binheader_readf (psf, "j", (cue_count > 20 ? 20 : cue_count) * 24) ;
 472                                                         break ;
 473                                                         } ;
 474
 475                                                 psf_log_printf (psf, "  Count : %d\n", cue_count) ;
 476
 477                                                 if ((psf->cues = psf_cues_alloc (cue_count)) == NULL)
 478                                                         return SFE_MALLOC_FAILED ;
 479
 480                                                 cue_index = 0 ;
 481
 482                                                 while (cue_count)
 483                                                 {
 484                                                         if ((thisread = psf_binheader_readf (psf, "e44m444", &id, &position, &chunk_id, &chunk_start, &block_start, &offset)) == 0)
 485                                                                 break ;
 486                                                         bytesread += thisread ;
 487
 488                                                         psf_log_printf (psf,    "   Cue ID : %2d"
 489                                                                                                         "  Pos : %5u  Chunk : %M"
 490                                                                                                         "  Chk Start : %d  Blk Start : %d"
 491                                                                                                         "  Offset : %5d\n",
 492                                                                         id, position, chunk_id, chunk_start, block_start, offset) ;
 493                                                         psf->cues->cue_points [cue_index].indx = id ;
 494                                                         psf->cues->cue_points [cue_index].position = position ;
 495                                                         psf->cues->cue_points [cue_index].fcc_chunk = chunk_id ;
 496                                                         psf->cues->cue_points [cue_index].chunk_start = chunk_start ;
 497                                                         psf->cues->cue_points [cue_index].block_start = block_start ;
 498                                                         psf->cues->cue_points [cue_index].sample_offset = offset ;
 499                                                         psf->cues->cue_points [cue_index].name [0] = '\0' ;
 500                                                         cue_count -- ;
 501                                                         cue_index ++ ;
 502                                                         } ;
 503
 504                                                 if (bytesread != chunk_size)
 505                                                 {       psf_log_printf (psf, "**** Chunk size weirdness (%d != %d)\n", chunk_size, bytesread) ;
 506                                                         psf_binheader_readf (psf, "j", chunk_size - bytesread) ;
 507                                                         } ;
 508                                                 } ;
 509                                         break ;
 510
 511                         case smpl_MARKER :
 512                                         parsestage |= HAVE_other ;
 513
 514                                         psf_log_printf (psf, "smpl : %u\n", chunk_size) ;
 515
 516                                         if ((error = wav_read_smpl_chunk (psf, chunk_size)))
 517                                                 return error ;
 518                                         break ;
 519
 520                         case acid_MARKER :
 521                                         parsestage |= HAVE_other ;
 522
 523                                         psf_log_printf (psf, "acid : %u\n", chunk_size) ;
 524
 525                                         if ((error = wav_read_acid_chunk (psf, chunk_size)))
 526                                                 return error ;
 527                                         break ;
 528
 529                         case INFO_MARKER :
 530                         case LIST_MARKER :
 531                                         parsestage |= HAVE_other ;
 532
 533                                         if ((error = wavlike_subchunk_parse (psf, marker, chunk_size)) != 0)
 534                                                 return error ;
 535                                         break ;
 536
 537                         case bext_MARKER :
 538                                         /*
 539                                         The 'bext' chunk can actually be updated, so don't need to set this.
 540                                         parsestage |= HAVE_other ;
 541                                         */
 542                                         if ((error = wavlike_read_bext_chunk (psf, chunk_size)))
 543                                                 return error ;
 544                                         break ;
 545
 546                         case PAD_MARKER :
 547                                         /*
 548                                         We can eat into a 'PAD ' chunk if we need to.
 549                                         parsestage |= HAVE_other ;
 550                                         */
 551                                         psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 552                                         psf_binheader_readf (psf, "j", chunk_size) ;
 553                                         break ;
 554
 555                         case cart_MARKER:
 556                                         if ((error = wavlike_read_cart_chunk (psf, chunk_size)))
 557                                                 return error ;
 558                                         break ;
 559
 560                         case iXML_MARKER : /* See http://en.wikipedia.org/wiki/IXML */
 561                         case strc_MARKER : /* Multiple of 32 bytes. */
 562                         case afsp_MARKER :
 563                         case clm_MARKER :
 564                         case elmo_MARKER :
 565                         case levl_MARKER :
 566                         case plst_MARKER :
 567                         case minf_MARKER :
 568                         case elm1_MARKER :
 569                         case regn_MARKER :
 570                         case ovwf_MARKER :
 571                         case inst_MARKER :
 572                         case AFAn_MARKER :
 573                         case umid_MARKER :
 574                         case SyLp_MARKER :
 575                         case Cr8r_MARKER :
 576                         case JUNK_MARKER :
 577                         case PMX_MARKER :
 578                         case DISP_MARKER :
 579                         case MEXT_MARKER :
 580                         case FLLR_MARKER :
 581                                         psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 582                                         psf_binheader_readf (psf, "j", chunk_size) ;
 583                                         break ;
 584
 585                         default :
 586                                         if (chunk_size >= 0xffff0000)
 587                                         {       done = SF_TRUE ;
 588                                                 psf_log_printf (psf, "*** Unknown chunk marker (%X) at position %D with length %u. Exiting parser.\n", marker, psf_ftell (psf) - 8, chunk_size) ;
 589                                                 break ;
 590                                                 } ;
 591
 592                                         if (psf_isprint ((marker >> 24) & 0xFF) && psf_isprint ((marker >> 16) & 0xFF)
 593                                                 && psf_isprint ((marker >> 8) & 0xFF) && psf_isprint (marker & 0xFF))
 594                                         {       psf_log_printf (psf, "*** %M : %u (unknown marker)\n", marker, chunk_size) ;
 595                                                 psf_binheader_readf (psf, "j", chunk_size) ;
 596                                                 break ;
 597                                                 } ;
 598                                         if (psf_ftell (psf) & 0x03)
 599                                         {       psf_log_printf (psf, "  Unknown chunk marker at position %D. Resynching.\n", psf_ftell (psf) - 8) ;
 600                                                 psf_binheader_readf (psf, "j", -3) ;
 601                                                 /* File is too messed up so we prevent editing in RDWR mode here. */
 602                                                 parsestage |= HAVE_other ;
 603                                                 break ;
 604                                                 } ;
 605                                         psf_log_printf (psf, "*** Unknown chunk marker (%X) at position %D. Exiting parser.\n", marker, psf_ftell (psf) - 8) ;
 606                                         done = SF_TRUE ;
 607                                         break ;
 608                         } ;     /* switch (marker) */
 609
 610                 if (chunk_size >= psf->filelength)
 611                 {       psf_log_printf (psf, "*** Chunk size %u > file length %D. Exiting parser.\n", chunk_size, psf->filelength) ;
 612                         break ;
 613                         } ;
 614
 615                 if (! psf->sf.seekable && (parsestage & HAVE_data))
 616                         break ;
 617
 618                 if (psf_ftell (psf) >= psf->filelength - SIGNED_SIZEOF (chunk_size))
 619                 {       psf_log_printf (psf, "End\n") ;
 620                         break ;
 621                         } ;
 622                 } ; /* while (1) */
 623
 624         if (psf->dataoffset <= 0)
 625                 return SFE_WAV_NO_DATA ;
 626
 627         if (psf->sf.channels < 1)
 628                 return SFE_CHANNEL_COUNT_ZERO ;
 629
 630         if (psf->sf.channels >= SF_MAX_CHANNELS)
 631                 return SFE_CHANNEL_COUNT ;
 632
 633         if (format != WAVE_FORMAT_PCM && (parsestage & HAVE_fact) == 0)
 634                 psf_log_printf (psf, "**** All non-PCM format files should have a 'fact' chunk.\n") ;
 635
 636         /* WAVs can be little or big endian */
 637         psf->endian = psf->rwf_endian ;
 638
 639         psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
 640
 641         if (psf->is_pipe == 0)
 642         {       /*
 643                 ** Check for 'wvpk' at the start of the DATA section. Not able to
 644                 ** handle this.
 645                 */
 646                 psf_binheader_readf (psf, "4", &marker) ;
 647                 if (marker == wvpk_MARKER || marker == OggS_MARKER)
 648                         return SFE_WAV_WVPK_DATA ;
 649                 } ;
 650
 651         /* Seek to start of DATA section. */
 652         psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
 653
 654         if (psf->blockwidth)
 655         {       if (psf->filelength - psf->dataoffset < psf->datalength)
 656                         psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
 657                 else
 658                         psf->sf.frames = psf->datalength / psf->blockwidth ;
 659                 } ;
 660
 661         switch (format)
 662         {       case WAVE_FORMAT_EXTENSIBLE :
 663                         if (psf->sf.format == (SF_FORMAT_WAVEX | SF_FORMAT_MS_ADPCM))
 664                         {       *blockalign = wav_fmt->msadpcm.blockalign ;
 665                                 *framesperblock = wav_fmt->msadpcm.samplesperblock ;
 666                                 } ;
 667                         break ;
 668
 669                 case WAVE_FORMAT_PCM :
 670                                         psf->sf.format = SF_FORMAT_WAV | u_bitwidth_to_subformat (psf->bytewidth * 8) ;
 671                                         break ;
 672
 673                 case WAVE_FORMAT_MULAW :
 674                 case IBM_FORMAT_MULAW :
 675                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_ULAW) ;
 676                                         break ;
 677
 678                 case WAVE_FORMAT_ALAW :
 679                 case IBM_FORMAT_ALAW :
 680                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_ALAW) ;
 681                                         break ;
 682
 683                 case WAVE_FORMAT_MS_ADPCM :
 684                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_MS_ADPCM) ;
 685                                         *blockalign = wav_fmt->msadpcm.blockalign ;
 686                                         *framesperblock = wav_fmt->msadpcm.samplesperblock ;
 687                                         break ;
 688
 689                 case WAVE_FORMAT_IMA_ADPCM :
 690                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_IMA_ADPCM) ;
 691                                         *blockalign = wav_fmt->ima.blockalign ;
 692                                         *framesperblock = wav_fmt->ima.samplesperblock ;
 693                                         break ;
 694
 695                 case WAVE_FORMAT_GSM610 :
 696                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_GSM610) ;
 697                                         break ;
 698
 699                 case WAVE_FORMAT_IEEE_FLOAT :
 700                                         psf->sf.format = SF_FORMAT_WAV ;
 701                                         psf->sf.format |= (psf->bytewidth == 8) ? SF_FORMAT_DOUBLE : SF_FORMAT_FLOAT ;
 702                                         break ;
 703
 704                 case WAVE_FORMAT_G721_ADPCM :
 705                                         psf->sf.format = SF_FORMAT_WAV | SF_FORMAT_G721_32 ;
 706                                         break ;
 707
 708                 default : return SFE_UNIMPLEMENTED ;
 709                 } ;
 710
 711         if (wpriv->fmt_is_broken)
 712                 wavlike_analyze (psf) ;
 713
 714         /* Only set the format endian-ness if its non-standard big-endian. */
 715         if (psf->endian == SF_ENDIAN_BIG)
 716                 psf->sf.format |= SF_ENDIAN_BIG ;
 717
 718         return 0 ;
 719 } /* wav_read_header */
 720
 721 static int
 722 wav_write_fmt_chunk (SF_PRIVATE *psf)
 723 {       int subformat, fmt_size, add_fact_chunk = 0 ;
 724
 725         subformat = SF_CODEC (psf->sf.format) ;
 726
 727         switch (subformat)
 728         {       case SF_FORMAT_PCM_U8 :
 729                 case SF_FORMAT_PCM_16 :
 730                 case SF_FORMAT_PCM_24 :
 731                 case SF_FORMAT_PCM_32 :
 732                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
 733
 734                                         /* fmt : format, channels, samplerate */
 735                                         psf_binheader_writef (psf, "4224", fmt_size, WAVE_FORMAT_PCM, psf->sf.channels, psf->sf.samplerate) ;
 736                                         /*  fmt : bytespersec */
 737                                         psf_binheader_writef (psf, "4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
 738                                         /*  fmt : blockalign, bitwidth */
 739                                         psf_binheader_writef (psf, "22", psf->bytewidth * psf->sf.channels, psf->bytewidth * 8) ;
 740                                         break ;
 741
 742                 case SF_FORMAT_FLOAT :
 743                 case SF_FORMAT_DOUBLE :
 744                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
 745
 746                                         /* fmt : format, channels, samplerate */
 747                                         psf_binheader_writef (psf, "4224", fmt_size, WAVE_FORMAT_IEEE_FLOAT, psf->sf.channels, psf->sf.samplerate) ;
 748                                         /*  fmt : bytespersec */
 749                                         psf_binheader_writef (psf, "4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
 750                                         /*  fmt : blockalign, bitwidth */
 751                                         psf_binheader_writef (psf, "22", psf->bytewidth * psf->sf.channels, psf->bytewidth * 8) ;
 752
 753                                         add_fact_chunk = SF_TRUE ;
 754                                         break ;
 755
 756                 case SF_FORMAT_ULAW :
 757                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 ;
 758
 759                                         /* fmt : format, channels, samplerate */
 760                                         psf_binheader_writef (psf, "4224", fmt_size, WAVE_FORMAT_MULAW, psf->sf.channels, psf->sf.samplerate) ;
 761                                         /*  fmt : bytespersec */
 762                                         psf_binheader_writef (psf, "4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
 763                                         /*  fmt : blockalign, bitwidth, extrabytes */
 764                                         psf_binheader_writef (psf, "222", psf->bytewidth * psf->sf.channels, 8, 0) ;
 765
 766                                         add_fact_chunk = SF_TRUE ;
 767                                         break ;
 768
 769                 case SF_FORMAT_ALAW :
 770                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 ;
 771
 772                                         /* fmt : format, channels, samplerate */
 773                                         psf_binheader_writef (psf, "4224", fmt_size, WAVE_FORMAT_ALAW, psf->sf.channels, psf->sf.samplerate) ;
 774                                         /*  fmt : bytespersec */
 775                                         psf_binheader_writef (psf, "4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
 776                                         /*  fmt : blockalign, bitwidth, extrabytes */
 777                                         psf_binheader_writef (psf, "222", psf->bytewidth * psf->sf.channels, 8, 0) ;
 778
 779                                         add_fact_chunk = SF_TRUE ;
 780                                         break ;
 781
 782                 /* Lite remove start */
 783                 case SF_FORMAT_IMA_ADPCM :
 784                                         {       int blockalign, framesperblock, bytespersec ;
 785
 786                                                 blockalign              = wavlike_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
 787                                                 framesperblock  = 2 * (blockalign - 4 * psf->sf.channels) / psf->sf.channels + 1 ;
 788                                                 bytespersec             = (psf->sf.samplerate * blockalign) / framesperblock ;
 789
 790                                                 /* fmt chunk. */
 791                                                 fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
 792
 793                                                 /* fmt : size, WAV format type, channels, samplerate, bytespersec */
 794                                                 psf_binheader_writef (psf, "42244", fmt_size, WAVE_FORMAT_IMA_ADPCM,
 795                                                                         psf->sf.channels, psf->sf.samplerate, bytespersec) ;
 796
 797                                                 /* fmt : blockalign, bitwidth, extrabytes, framesperblock. */
 798                                                 psf_binheader_writef (psf, "2222", blockalign, 4, 2, framesperblock) ;
 799                                                 } ;
 800
 801                                         add_fact_chunk = SF_TRUE ;
 802                                         break ;
 803
 804                 case SF_FORMAT_MS_ADPCM :
 805                                         {       int     blockalign, framesperblock, bytespersec, extrabytes ;
 806
 807                                                 blockalign              = wavlike_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
 808                                                 framesperblock  = 2 + 2 * (blockalign - 7 * psf->sf.channels) / psf->sf.channels ;
 809                                                 bytespersec             = (psf->sf.samplerate * blockalign) / framesperblock ;
 810
 811                                                 /* fmt chunk. */
 812                                                 extrabytes      = 2 + 2 + WAVLIKE_MSADPCM_ADAPT_COEFF_COUNT * (2 + 2) ;
 813                                                 fmt_size        = 2 + 2 + 4 + 4 + 2 + 2 + 2 + extrabytes ;
 814
 815                                                 /* fmt : size, WAV format type, channels. */
 816                                                 psf_binheader_writef (psf, "422", fmt_size, WAVE_FORMAT_MS_ADPCM, psf->sf.channels) ;
 817
 818                                                 /* fmt : samplerate, bytespersec. */
 819                                                 psf_binheader_writef (psf, "44", psf->sf.samplerate, bytespersec) ;
 820
 821                                                 /* fmt : blockalign, bitwidth, extrabytes, framesperblock. */
 822                                                 psf_binheader_writef (psf, "22222", blockalign, 4, extrabytes, framesperblock, 7) ;
 823
 824                                                 wavlike_msadpcm_write_adapt_coeffs (psf) ;
 825                                                 } ;
 826
 827                                         add_fact_chunk = SF_TRUE ;
 828                                         break ;
 829
 830
 831                 case SF_FORMAT_G721_32 :
 832                                         /* fmt chunk. */
 833                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
 834
 835                                         /* fmt : size, WAV format type, channels, samplerate, bytespersec */
 836                                         psf_binheader_writef (psf, "42244", fmt_size, WAVE_FORMAT_G721_ADPCM,
 837                                                                 psf->sf.channels, psf->sf.samplerate, psf->sf.samplerate * psf->sf.channels / 2) ;
 838
 839                                         /* fmt : blockalign, bitwidth, extrabytes, auxblocksize. */
 840                                         psf_binheader_writef (psf, "2222", 64, 4, 2, 0) ;
 841
 842                                         add_fact_chunk = SF_TRUE ;
 843                                         break ;
 844
 845                 /* Lite remove end */
 846
 847                 case SF_FORMAT_GSM610 :
 848                                         {       int     blockalign, framesperblock, bytespersec ;
 849
 850                                                 blockalign              = WAVLIKE_GSM610_BLOCKSIZE ;
 851                                                 framesperblock  = WAVLIKE_GSM610_SAMPLES ;
 852                                                 bytespersec             = (psf->sf.samplerate * blockalign) / framesperblock ;
 853
 854                                                 /* fmt chunk. */
 855                                                 fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
 856
 857                                                 /* fmt : size, WAV format type, channels. */
 858                                                 psf_binheader_writef (psf, "422", fmt_size, WAVE_FORMAT_GSM610, psf->sf.channels) ;
 859
 860                                                 /* fmt : samplerate, bytespersec. */
 861                                                 psf_binheader_writef (psf, "44", psf->sf.samplerate, bytespersec) ;
 862
 863                                                 /* fmt : blockalign, bitwidth, extrabytes, framesperblock. */
 864                                                 psf_binheader_writef (psf, "2222", blockalign, 0, 2, framesperblock) ;
 865                                                 } ;
 866
 867                                         add_fact_chunk = SF_TRUE ;
 868                                         break ;
 869
 870                 default :       return SFE_UNIMPLEMENTED ;
 871                 } ;
 872
 873         if (add_fact_chunk)
 874                 psf_binheader_writef (psf, "tm48", fact_MARKER, 4, psf->sf.frames) ;
 875
 876         return 0 ;
 877 } /* wav_write_fmt_chunk */
 878
 879 static int
 880 wavex_write_fmt_chunk (SF_PRIVATE *psf)
 881 {       WAVLIKE_PRIVATE *wpriv ;
 882         int subformat, fmt_size ;
 883
 884         if ((wpriv = psf->container_data) == NULL)
 885                 return SFE_INTERNAL ;
 886
 887         subformat = SF_CODEC (psf->sf.format) ;
 888
 889         /* initial section (same for all, it appears) */
 890         switch (subformat)
 891         {       case SF_FORMAT_PCM_U8 :
 892                 case SF_FORMAT_PCM_16 :
 893                 case SF_FORMAT_PCM_24 :
 894                 case SF_FORMAT_PCM_32 :
 895                 case SF_FORMAT_FLOAT :
 896                 case SF_FORMAT_DOUBLE :
 897                 case SF_FORMAT_ULAW :
 898                 case SF_FORMAT_ALAW :
 899                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 + 4 + 4 + 2 + 2 + 8 ;
 900
 901                         /* fmt : format, channels, samplerate */
 902                         psf_binheader_writef (psf, "4224", fmt_size, WAVE_FORMAT_EXTENSIBLE, psf->sf.channels, psf->sf.samplerate) ;
 903                         /*  fmt : bytespersec */
 904                         psf_binheader_writef (psf, "4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
 905                         /*  fmt : blockalign, bitwidth */
 906                         psf_binheader_writef (psf, "22", psf->bytewidth * psf->sf.channels, psf->bytewidth * 8) ;
 907
 908                         /* cbSize 22 is sizeof (WAVEFORMATEXTENSIBLE) - sizeof (WAVEFORMATEX) */
 909                         psf_binheader_writef (psf, "2", 22) ;
 910
 911                         /* wValidBitsPerSample, for our use same as bitwidth as we use it fully */
 912                         psf_binheader_writef (psf, "2", psf->bytewidth * 8) ;
 913
 914                         /* For an Ambisonic file set the channel mask to zero.
 915                         ** Otherwise use a default based on the channel count.
 916                         */
 917                         if (wpriv->wavex_ambisonic != SF_AMBISONIC_NONE)
 918                                 psf_binheader_writef (psf, "4", 0) ;
 919                         else if (wpriv->wavex_channelmask != 0)
 920                                 psf_binheader_writef (psf, "4", wpriv->wavex_channelmask) ;
 921                         else
 922                         {       /*
 923                                 ** Ok some liberty is taken here to use the most commonly used channel masks
 924                                 ** instead of "no mapping". If you really want to use "no mapping" for 8 channels and less
 925                                 ** please don't use wavex. (otherwise we'll have to create a new SF_COMMAND)
 926                                 */
 927                                 switch (psf->sf.channels)
 928                                 {       case 1 :        /* center channel mono */
 929                                                 psf_binheader_writef (psf, "4", 0x4) ;
 930                                                 break ;
 931
 932                                         case 2 :        /* front left and right */
 933                                                 psf_binheader_writef (psf, "4", 0x1 | 0x2) ;
 934                                                 break ;
 935
 936                                         case 4 :        /* Quad */
 937                                                 psf_binheader_writef (psf, "4", 0x1 | 0x2 | 0x10 | 0x20) ;
 938                                                 break ;
 939
 940                                         case 6 :        /* 5.1 */
 941                                                 psf_binheader_writef (psf, "4", 0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20) ;
 942                                                 break ;
 943
 944                                         case 8 :        /* 7.1 */
 945                                                 psf_binheader_writef (psf, "4", 0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20 | 0x40 | 0x80) ;
 946                                                 break ;
 947
 948                                         default :       /* 0 when in doubt , use direct out, ie NO mapping*/
 949                                                 psf_binheader_writef (psf, "4", 0x0) ;
 950                                                 break ;
 951                                         } ;
 952                                 } ;
 953                         break ;
 954
 955                 case SF_FORMAT_MS_ADPCM : /* Todo, GUID exists might have different header as per wav_write_header */
 956                 default :
 957                         return SFE_UNIMPLEMENTED ;
 958                 } ;
 959
 960         /* GUID section, different for each */
 961
 962         switch (subformat)
 963         {       case SF_FORMAT_PCM_U8 :
 964                 case SF_FORMAT_PCM_16 :
 965                 case SF_FORMAT_PCM_24 :
 966                 case SF_FORMAT_PCM_32 :
 967                         wavlike_write_guid (psf, wpriv->wavex_ambisonic == SF_AMBISONIC_NONE ?
 968                                                 &MSGUID_SUBTYPE_PCM : &MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_PCM) ;
 969                         break ;
 970
 971                 case SF_FORMAT_FLOAT :
 972                 case SF_FORMAT_DOUBLE :
 973                         wavlike_write_guid (psf, wpriv->wavex_ambisonic == SF_AMBISONIC_NONE ?
 974                                                 &MSGUID_SUBTYPE_IEEE_FLOAT : &MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_IEEE_FLOAT) ;
 975                         break ;
 976
 977                 case SF_FORMAT_ULAW :
 978                         wavlike_write_guid (psf, &MSGUID_SUBTYPE_MULAW) ;
 979                         break ;
 980
 981                 case SF_FORMAT_ALAW :
 982                         wavlike_write_guid (psf, &MSGUID_SUBTYPE_ALAW) ;
 983                         break ;
 984
 985 #if 0
 986                 /* This is dead code due to return in previous switch statement. */
 987                 case SF_FORMAT_MS_ADPCM : /* todo, GUID exists */
 988                         wavlike_write_guid (psf, &MSGUID_SUBTYPE_MS_ADPCM) ;
 989                         break ;
 990                         return SFE_UNIMPLEMENTED ;
 991 #endif
 992
 993                 default : return SFE_UNIMPLEMENTED ;
 994                 } ;
 995
 996         psf_binheader_writef (psf, "tm48", fact_MARKER, 4, psf->sf.frames) ;
 997
 998         return 0 ;
 999 } /* wavex_write_fmt_chunk */
1000
1001
1002 static int
1003 wav_write_header (SF_PRIVATE *psf, int calc_length)
1004 {       sf_count_t      current ;
1005         int             error, has_data = SF_FALSE ;
1006
1007         current = psf_ftell (psf) ;
1008
1009         if (current > psf->dataoffset)
1010                 has_data = SF_TRUE ;
1011
1012         if (calc_length)
1013         {       psf->filelength = psf_get_filelen (psf) ;
1014
1015                 psf->datalength = psf->filelength - psf->dataoffset ;
1016
1017                 if (psf->dataend)
1018                         psf->datalength -= psf->filelength - psf->dataend ;
1019                 else if (psf->bytewidth > 0 && psf->sf.seekable == SF_TRUE)
1020                         psf->datalength = psf->sf.frames * psf->bytewidth * psf->sf.channels ;
1021                 } ;
1022
1023         /* Reset the current header length to zero. */
1024         psf->header.ptr [0] = 0 ;
1025         psf->header.indx = 0 ;
1026         psf_fseek (psf, 0, SEEK_SET) ;
1027
1028         /*
1029         ** RIFX signifies big-endian format for all header and data.
1030         ** To prevent lots of code copying here, we'll set the psf->rwf_endian flag
1031         ** once here, and never specify endian-ness for all other header operations.
1032         */
1033
1034         /* RIFF/RIFX marker, length, WAVE and 'fmt ' markers. */
1035
1036         if (psf->endian == SF_ENDIAN_LITTLE)
1037                 psf_binheader_writef (psf, "etm8", RIFF_MARKER, (psf->filelength < 8) ? 8 : psf->filelength - 8) ;
1038         else
1039                 psf_binheader_writef (psf, "Etm8", RIFX_MARKER, (psf->filelength < 8) ? 8 : psf->filelength - 8) ;
1040
1041         /* WAVE and 'fmt ' markers. */
1042         psf_binheader_writef (psf, "mm", WAVE_MARKER, fmt_MARKER) ;
1043
1044         /* Write the 'fmt ' chunk. */
1045         switch (SF_CONTAINER (psf->sf.format))
1046         {       case SF_FORMAT_WAV :
1047                                 if ((error = wav_write_fmt_chunk (psf)) != 0)
1048                                         return error ;
1049                                 break ;
1050
1051                 case SF_FORMAT_WAVEX :
1052                                 if ((error = wavex_write_fmt_chunk (psf)) != 0)
1053                                         return error ;
1054                                 break ;
1055
1056                 default :
1057                                 return SFE_UNIMPLEMENTED ;
1058                 } ;
1059
1060         /* The LIST/INFO chunk. */
1061         if (psf->strings.flags & SF_STR_LOCATE_START)
1062                 wavlike_write_strings (psf, SF_STR_LOCATE_START) ;
1063
1064         if (psf->peak_info != NULL && psf->peak_info->peak_loc == SF_PEAK_START)
1065                 wavlike_write_peak_chunk (psf) ;
1066
1067         if (psf->broadcast_16k != NULL)
1068                 wavlike_write_bext_chunk (psf) ;
1069
1070         if (psf->cart_16k != NULL)
1071                 wavlike_write_cart_chunk (psf) ;
1072
1073         if (psf->cues != NULL)
1074         {       uint32_t k ;
1075
1076                 psf_binheader_writef (psf, "em44", cue_MARKER, 4 + psf->cues->cue_count * 6 * 4, psf->cues->cue_count) ;
1077
1078                 for (k = 0 ; k < psf->cues->cue_count ; k++)
1079                         psf_binheader_writef (psf, "e44m444", psf->cues->cue_points [k].indx, psf->cues->cue_points [k].position,
1080                                                 psf->cues->cue_points [k].fcc_chunk, psf->cues->cue_points [k].chunk_start,
1081                                                 psf->cues->cue_points [k].block_start, psf->cues->cue_points [k].sample_offset) ;
1082                 } ;
1083
1084         if (psf->instrument != NULL)
1085         {       int             tmp ;
1086                 double  dtune = (double) (0x40000000) / 25.0 ;
1087
1088                 psf_binheader_writef (psf, "m4", smpl_MARKER, 9 * 4 + psf->instrument->loop_count * 6 * 4) ;
1089                 psf_binheader_writef (psf, "44", 0, 0) ; /* Manufacturer zero is everyone */
1090                 tmp = (int) (1.0e9 / psf->sf.samplerate) ; /* Sample period in nano seconds */
1091                 psf_binheader_writef (psf, "44", tmp, psf->instrument->basenote) ;
1092                 tmp = (uint32_t) (psf->instrument->detune * dtune + 0.5) ;
1093                 psf_binheader_writef (psf, "4", tmp) ;
1094                 psf_binheader_writef (psf, "44", 0, 0) ; /* SMTPE format */
1095                 psf_binheader_writef (psf, "44", psf->instrument->loop_count, 0) ;
1096
1097                 for (tmp = 0 ; tmp < psf->instrument->loop_count ; tmp++)
1098                 {       int type ;
1099
1100                         type = psf->instrument->loops [tmp].mode ;
1101                         type = (type == SF_LOOP_FORWARD ? 0 : type == SF_LOOP_BACKWARD ? 2 : type == SF_LOOP_ALTERNATING ? 1 : 32) ;
1102
1103                         psf_binheader_writef (psf, "44", tmp, type) ;
1104                         psf_binheader_writef (psf, "44", psf->instrument->loops [tmp].start, psf->instrument->loops [tmp].end - 1) ;
1105                         psf_binheader_writef (psf, "44", 0, psf->instrument->loops [tmp].count) ;
1106                         } ;
1107                 } ;
1108
1109         /* Write custom headers. */
1110         if (psf->wchunks.used > 0)
1111                 wavlike_write_custom_chunks (psf) ;
1112
1113         if (psf->header.indx + 16 < psf->dataoffset)
1114         {       /* Add PAD data if necessary. */
1115                 size_t k = psf->dataoffset - (psf->header.indx + 16) ;
1116                 psf_binheader_writef (psf, "m4z", PAD_MARKER, k, k) ;
1117                 } ;
1118
1119         psf_binheader_writef (psf, "tm8", data_MARKER, psf->datalength) ;
1120         psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ;
1121         if (psf->error)
1122                 return psf->error ;
1123
1124         if (has_data && psf->dataoffset != psf->header.indx)
1125         {       psf_log_printf (psf, "Oooops : has_data && psf->dataoffset != psf->header.indx\n") ;
1126                 return psf->error = SFE_INTERNAL ;
1127                 } ;
1128
1129         psf->dataoffset = psf->header.indx ;
1130
1131         if (! has_data)
1132                 psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
1133         else if (current > 0)
1134                 psf_fseek (psf, current, SEEK_SET) ;
1135
1136         return psf->error ;
1137 } /* wav_write_header */
1138
1139
1140 static int
1141 wav_write_tailer (SF_PRIVATE *psf)
1142 {
1143         /* Reset the current header buffer length to zero. */
1144         psf->header.ptr [0] = 0 ;
1145         psf->header.indx = 0 ;
1146
1147         if (psf->bytewidth > 0 && psf->sf.seekable == SF_TRUE)
1148         {       psf->datalength = psf->sf.frames * psf->bytewidth * psf->sf.channels ;
1149                 psf->dataend = psf->dataoffset + psf->datalength ;
1150                 } ;
1151
1152         if (psf->dataend > 0)
1153                 psf_fseek (psf, psf->dataend, SEEK_SET) ;
1154         else
1155                 psf->dataend = psf_fseek (psf, 0, SEEK_END) ;
1156
1157         if (psf->dataend & 1)
1158                 psf_binheader_writef (psf, "z", 1) ;
1159
1160         /* Add a PEAK chunk if requested. */
1161         if (psf->peak_info != NULL && psf->peak_info->peak_loc == SF_PEAK_END)
1162                 wavlike_write_peak_chunk (psf) ;
1163
1164         if (psf->strings.flags & SF_STR_LOCATE_END)
1165                 wavlike_write_strings (psf, SF_STR_LOCATE_END) ;
1166
1167         /* Write the tailer. */
1168         if (psf->header.indx > 0)
1169                 psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ;
1170
1171         return 0 ;
1172 } /* wav_write_tailer */
1173
1174 static int
1175 wav_close (SF_PRIVATE *psf)
1176 {
1177         if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
1178         {       wav_write_tailer (psf) ;
1179
1180                 if (psf->file.mode == SFM_RDWR)
1181                 {       sf_count_t current = psf_ftell (psf) ;
1182
1183                         /*
1184                         **      If the mode is RDWR and the current position is less than the
1185                         **      filelength, truncate the file.
1186                         */
1187
1188                         if (current < psf->filelength)
1189                         {       psf_ftruncate (psf, current) ;
1190                                 psf->filelength = current ;
1191                                 } ;
1192                         } ;
1193
1194                 psf->write_header (psf, SF_TRUE) ;
1195                 } ;
1196
1197         return 0 ;
1198 } /* wav_close */
1199
1200 static int
1201 wav_command (SF_PRIVATE *psf, int command, void * UNUSED (data), int datasize)
1202 {       WAVLIKE_PRIVATE *wpriv ;
1203
1204         if ((wpriv = psf->container_data) == NULL)
1205                 return SFE_INTERNAL ;
1206
1207         switch (command)
1208         {       case SFC_WAVEX_SET_AMBISONIC :
1209                         if ((SF_CONTAINER (psf->sf.format)) == SF_FORMAT_WAVEX)
1210                         {       if (datasize == SF_AMBISONIC_NONE)
1211                                         wpriv->wavex_ambisonic = SF_AMBISONIC_NONE ;
1212                                 else if (datasize == SF_AMBISONIC_B_FORMAT)
1213                                         wpriv->wavex_ambisonic = SF_AMBISONIC_B_FORMAT ;
1214                                 else
1215                                         return 0 ;
1216                                 } ;
1217                         return wpriv->wavex_ambisonic ;
1218
1219                 case SFC_WAVEX_GET_AMBISONIC :
1220                         return wpriv->wavex_ambisonic ;
1221
1222                 case SFC_SET_CHANNEL_MAP_INFO :
1223                         wpriv->wavex_channelmask = wavlike_gen_channel_mask (psf->channel_map, psf->sf.channels) ;
1224                         return (wpriv->wavex_channelmask != 0) ;
1225
1226                 default :
1227                         break ;
1228         } ;
1229
1230         return 0 ;
1231 } /* wav_command */
1232
1233 static int
1234 wav_read_smpl_chunk (SF_PRIVATE *psf, uint32_t chunklen)
1235 {       char buffer [512] ;
1236         uint32_t thisread, bytesread = 0, dword, sampler_data, loop_count ;
1237         uint32_t note, start, end, type = -1, count ;
1238         int j, k ;
1239
1240         chunklen += (chunklen & 1) ;
1241
1242         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1243         psf_log_printf (psf, "  Manufacturer : %X\n", dword) ;
1244
1245         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1246         psf_log_printf (psf, "  Product      : %u\n", dword) ;
1247
1248         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1249         psf_log_printf (psf, "  Period       : %u nsec\n", dword) ;
1250
1251         bytesread += psf_binheader_readf (psf, "4", &note) ;
1252         psf_log_printf (psf, "  Midi Note    : %u\n", note) ;
1253
1254         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1255         if (dword != 0)
1256         {       snprintf (buffer, sizeof (buffer), "%f",
1257                                         (1.0 * 0x80000000) / ((uint32_t) dword)) ;
1258                 psf_log_printf (psf, "  Pitch Fract. : %s\n", buffer) ;
1259                 }
1260         else
1261                 psf_log_printf (psf, "  Pitch Fract. : 0\n") ;
1262
1263         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1264         psf_log_printf (psf, "  SMPTE Format : %u\n", dword) ;
1265
1266         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1267         snprintf (buffer, sizeof (buffer), "%02d:%02d:%02d %02d",
1268                                 (dword >> 24) & 0x7F, (dword >> 16) & 0x7F, (dword >> 8) & 0x7F, dword & 0x7F) ;
1269         psf_log_printf (psf, "  SMPTE Offset : %s\n", buffer) ;
1270
1271         bytesread += psf_binheader_readf (psf, "4", &loop_count) ;
1272         psf_log_printf (psf, "  Loop Count   : %u\n", loop_count) ;
1273
1274         if (loop_count == 0 && chunklen == bytesread)
1275                 return 0 ;
1276
1277         /* Sampler Data holds the number of data bytes after the CUE chunks which
1278         ** is not actually CUE data. Display value after CUE data.
1279         */
1280         bytesread += psf_binheader_readf (psf, "4", &sampler_data) ;
1281
1282         if ((psf->instrument = psf_instrument_alloc ()) == NULL)
1283                 return SFE_MALLOC_FAILED ;
1284
1285         psf->instrument->loop_count = loop_count ;
1286
1287         for (j = 0 ; loop_count > 0 && chunklen - bytesread >= 24 ; j ++)
1288         {       if ((thisread = psf_binheader_readf (psf, "4", &dword)) == 0)
1289                         break ;
1290                 bytesread += thisread ;
1291                 psf_log_printf (psf, "    Cue ID : %2u", dword) ;
1292
1293                 bytesread += psf_binheader_readf (psf, "4", &type) ;
1294                 psf_log_printf (psf, "  Type : %2u", type) ;
1295
1296                 bytesread += psf_binheader_readf (psf, "4", &start) ;
1297                 psf_log_printf (psf, "  Start : %5u", start) ;
1298
1299                 bytesread += psf_binheader_readf (psf, "4", &end) ;
1300                 psf_log_printf (psf, "  End : %5u", end) ;
1301
1302                 bytesread += psf_binheader_readf (psf, "4", &dword) ;
1303                 psf_log_printf (psf, "  Fraction : %5u", dword) ;
1304
1305                 bytesread += psf_binheader_readf (psf, "4", &count) ;
1306                 psf_log_printf (psf, "  Count : %5u\n", count) ;
1307
1308                 if (j < ARRAY_LEN (psf->instrument->loops))
1309                 {       psf->instrument->loops [j].start = start ;
1310                         psf->instrument->loops [j].end = end + 1 ;
1311                         psf->instrument->loops [j].count = count ;
1312
1313                         switch (type)
1314                         {       case 0 :
1315                                         psf->instrument->loops [j].mode = SF_LOOP_FORWARD ;
1316                                         break ;
1317                                 case 1 :
1318                                         psf->instrument->loops [j].mode = SF_LOOP_ALTERNATING ;
1319                                         break ;
1320                                 case 2 :
1321                                         psf->instrument->loops [j].mode = SF_LOOP_BACKWARD ;
1322                                         break ;
1323                                 default:
1324                                         psf->instrument->loops [j].mode = SF_LOOP_NONE ;
1325                                         break ;
1326                                 } ;
1327                         } ;
1328
1329                 loop_count -- ;
1330                 } ;
1331
1332         if (chunklen - bytesread == 0)
1333         {       if (sampler_data != 0)
1334                         psf_log_printf (psf, "  Sampler Data : %u (should be 0)\n", sampler_data) ;
1335                 else
1336                         psf_log_printf (psf, "  Sampler Data : %u\n", sampler_data) ;
1337                 }
1338         else
1339         {       if (sampler_data != chunklen - bytesread)
1340                 {       psf_log_printf (psf, "  Sampler Data : %u (should have been %u)\n", sampler_data, chunklen - bytesread) ;
1341                         sampler_data = chunklen - bytesread ;
1342                         }
1343                 else
1344                         psf_log_printf (psf, "  Sampler Data : %u\n", sampler_data) ;
1345
1346                 psf_log_printf (psf, "      ") ;
1347                 for (k = 0 ; k < (int) sampler_data ; k++)
1348                 {       char ch ;
1349
1350                         if (k > 0 && (k % 20) == 0)
1351                                 psf_log_printf (psf, "\n      ") ;
1352
1353                         if ((thisread = psf_binheader_readf (psf, "1", &ch)) == 0)
1354                                 break ;
1355                         bytesread += thisread ;
1356                         psf_log_printf (psf, "%02X ", ch & 0xFF) ;
1357                         } ;
1358
1359                 psf_log_printf (psf, "\n") ;
1360                 } ;
1361
1362         psf->instrument->basenote = note ;
1363         psf->instrument->gain = 1 ;
1364         psf->instrument->velocity_lo = psf->instrument->key_lo = 0 ;
1365         psf->instrument->velocity_hi = psf->instrument->key_hi = 127 ;
1366
1367         return 0 ;
1368 } /* wav_read_smpl_chunk */
1369
1370 /*
1371 ** The acid chunk goes a little something like this:
1372 **
1373 ** 4 bytes          'acid'
1374 ** 4 bytes (int)     length of chunk starting at next byte
1375 **
1376 ** 4 bytes (int)     type of file:
1377 **        this appears to be a bit mask,however some combinations
1378 **        are probably impossible and/or qualified as "errors"
1379 **
1380 **        0x01 On: One Shot         Off: Loop
1381 **        0x02 On: Root note is Set Off: No root
1382 **        0x04 On: Stretch is On,   Off: Strech is OFF
1383 **        0x08 On: Disk Based       Off: Ram based
1384 **        0x10 On: ??????????       Off: ????????? (Acidizer puts that ON)
1385 **
1386 ** 2 bytes (short)      root note
1387 **        if type 0x10 is OFF : [C,C#,(...),B] -> [0x30 to 0x3B]
1388 **        if type 0x10 is ON  : [C,C#,(...),B] -> [0x3C to 0x47]
1389 **         (both types fit on same MIDI pitch albeit different octaves, so who cares)
1390 **
1391 ** 2 bytes (short)      ??? always set to 0x8000
1392 ** 4 bytes (float)      ??? seems to be always 0
1393 ** 4 bytes (int)        number of beats
1394 ** 2 bytes (short)      meter denominator   //always 4 in SF/ACID
1395 ** 2 bytes (short)      meter numerator     //always 4 in SF/ACID
1396 **                      //are we sure about the order?? usually its num/denom
1397 ** 4 bytes (float)      tempo
1398 **
1399 */
1400
1401 static int
1402 wav_read_acid_chunk (SF_PRIVATE *psf, uint32_t chunklen)
1403 {       char buffer [512] ;
1404         uint32_t bytesread = 0 ;
1405         int     beats, flags ;
1406         short rootnote, q1, meter_denom, meter_numer ;
1407         float q2, tempo ;
1408
1409         chunklen += (chunklen & 1) ;
1410
1411         bytesread += psf_binheader_readf (psf, "422f", &flags, &rootnote, &q1, &q2) ;
1412
1413         snprintf (buffer, sizeof (buffer), "%f", q2) ;
1414
1415         psf_log_printf (psf, "  Flags     : 0x%04x (%s,%s,%s,%s,%s)\n", flags,
1416                         (flags & 0x01) ? "OneShot" : "Loop",
1417                         (flags & 0x02) ? "RootNoteValid" : "RootNoteInvalid",
1418                         (flags & 0x04) ? "StretchOn" : "StretchOff",
1419                         (flags & 0x08) ? "DiskBased" : "RAMBased",
1420                         (flags & 0x10) ? "??On" : "??Off") ;
1421
1422         psf_log_printf (psf, "  Root note : 0x%x\n  ????      : 0x%04x\n  ????      : %s\n",
1423                                 rootnote, q1, buffer) ;
1424
1425         bytesread += psf_binheader_readf (psf, "422f", &beats, &meter_denom, &meter_numer, &tempo) ;
1426         snprintf (buffer, sizeof (buffer), "%f", tempo) ;
1427         psf_log_printf (psf, "  Beats     : %d\n  Meter     : %d/%d\n  Tempo     : %s\n",
1428                                 beats, meter_numer, meter_denom, buffer) ;
1429
1430         psf_binheader_readf (psf, "j", chunklen - bytesread) ;
1431
1432         if ((psf->loop_info = calloc (1, sizeof (SF_LOOP_INFO))) == NULL)
1433                 return SFE_MALLOC_FAILED ;
1434
1435         psf->loop_info->time_sig_num    = meter_numer ;
1436         psf->loop_info->time_sig_den    = meter_denom ;
1437         psf->loop_info->loop_mode               = (flags & 0x01) ? SF_LOOP_NONE : SF_LOOP_FORWARD ;
1438         psf->loop_info->num_beats               = beats ;
1439         psf->loop_info->bpm                             = tempo ;
1440         psf->loop_info->root_key                = (flags & 0x02) ? rootnote : -1 ;
1441
1442         return 0 ;
1443 } /* wav_read_acid_chunk */
1444
1445 /*==============================================================================
1446 */
1447
1448 static int
1449 wav_set_chunk (SF_PRIVATE *psf, const SF_CHUNK_INFO * chunk_info)
1450 {       return psf_save_write_chunk (&psf->wchunks, chunk_info) ;
1451 } /* wav_set_chunk */
1452
1453 static SF_CHUNK_ITERATOR *
1454 wav_next_chunk_iterator (SF_PRIVATE *psf, SF_CHUNK_ITERATOR * iterator)
1455 {       return psf_next_chunk_iterator (&psf->rchunks, iterator) ;
1456 } /* wav_next_chunk_iterator */
1457
1458 static int
1459 wav_get_chunk_size (SF_PRIVATE *psf, const SF_CHUNK_ITERATOR * iterator, SF_CHUNK_INFO * chunk_info)
1460 {       int indx ;
1461
1462         if ((indx = psf_find_read_chunk_iterator (&psf->rchunks, iterator)) < 0)
1463                 return SFE_UNKNOWN_CHUNK ;
1464
1465         chunk_info->datalen = psf->rchunks.chunks [indx].len ;
1466
1467         return SFE_NO_ERROR ;
1468 } /* wav_get_chunk_size */
1469
1470 static int
1471 wav_get_chunk_data (SF_PRIVATE *psf, const SF_CHUNK_ITERATOR * iterator, SF_CHUNK_INFO * chunk_info)
1472 {       int indx ;
1473         sf_count_t pos ;
1474
1475         if ((indx = psf_find_read_chunk_iterator (&psf->rchunks, iterator)) < 0)
1476                 return SFE_UNKNOWN_CHUNK ;
1477
1478         if (chunk_info->data == NULL)
1479                 return SFE_BAD_CHUNK_DATA_PTR ;
1480
1481         chunk_info->id_size = psf->rchunks.chunks [indx].id_size ;
1482         memcpy (chunk_info->id, psf->rchunks.chunks [indx].id, sizeof (chunk_info->id) / sizeof (*chunk_info->id)) ;
1483
1484         pos = psf_ftell (psf) ;
1485         psf_fseek (psf, psf->rchunks.chunks [indx].offset, SEEK_SET) ;
1486         psf_fread (chunk_info->data, SF_MIN (chunk_info->datalen, psf->rchunks.chunks [indx].len), 1, psf) ;
1487         psf_fseek (psf, pos, SEEK_SET) ;
1488
1489         return SFE_NO_ERROR ;
1490 } /* wav_get_chunk_data */