src/wav.c

   1 /*
   2 ** Copyright (C) 1999-2017 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                 /* Lite remove end */
 262
 263                 default :       return SFE_UNIMPLEMENTED ;
 264                 } ;
 265
 266         if (psf->file.mode == SFM_WRITE || (psf->file.mode == SFM_RDWR && psf->filelength == 0))
 267                 return psf->write_header (psf, SF_FALSE) ;
 268
 269         return error ;
 270 } /* wav_open */
 271
 272 /*=========================================================================
 273 ** Private functions.
 274 */
 275
 276 static int
 277 wav_read_header (SF_PRIVATE *psf, int *blockalign, int *framesperblock)
 278 {       WAVLIKE_PRIVATE *wpriv ;
 279         WAV_FMT         *wav_fmt ;
 280         FACT_CHUNK      fact_chunk ;
 281         uint32_t        marker, chunk_size = 0, RIFFsize = 0, done = 0 ;
 282         int                     parsestage = 0, error, format = 0 ;
 283
 284         if (psf->is_pipe == 0 && psf->filelength > SF_PLATFORM_S64 (0xffffffff))
 285                 psf_log_printf (psf, "Warning : filelength > 0xffffffff. This is bad!!!!\n") ;
 286
 287         if ((wpriv = psf->container_data) == NULL)
 288                 return SFE_INTERNAL ;
 289         wav_fmt = &wpriv->wav_fmt ;
 290
 291         /* Set position to start of file to begin reading header. */
 292         psf_binheader_readf (psf, "pmj", 0, &marker, -4) ;
 293         psf->header.indx = 0 ;
 294
 295         /* RIFX signifies big-endian format for all header and data  to prevent
 296         ** lots of code copying here, we'll set the psf->rwf_endian flag once here,
 297         ** and never specify endian-ness for all other header ops/
 298         */
 299         psf->rwf_endian = (marker == RIFF_MARKER) ? SF_ENDIAN_LITTLE : SF_ENDIAN_BIG ;
 300
 301         while (! done)
 302         {       size_t jump = chunk_size & 1 ;
 303
 304                 marker = chunk_size = 0 ;
 305                 psf_binheader_readf (psf, "jm4", jump, &marker, &chunk_size) ;
 306                 if (marker == 0)
 307                 {       sf_count_t pos = psf_ftell (psf) ;
 308                         psf_log_printf (psf, "Have 0 marker at position %D (0x%x).\n", pos, pos) ;
 309                         break ;
 310                         } ;
 311
 312                 psf_store_read_chunk_u32 (&psf->rchunks, marker, psf_ftell (psf), chunk_size) ;
 313
 314                 switch (marker)
 315                 {       case RIFF_MARKER :
 316                         case RIFX_MARKER :
 317                                         if (parsestage)
 318                                                 return SFE_WAV_NO_RIFF ;
 319
 320                                         parsestage |= HAVE_RIFF ;
 321
 322                                         RIFFsize = chunk_size ;
 323
 324                                         if (psf->fileoffset > 0 && psf->filelength > RIFFsize + 8)
 325                                         {       /* Set file length. */
 326                                                 psf->filelength = RIFFsize + 8 ;
 327                                                 if (marker == RIFF_MARKER)
 328                                                         psf_log_printf (psf, "RIFF : %u\n", RIFFsize) ;
 329                                                 else
 330                                                         psf_log_printf (psf, "RIFX : %u\n", RIFFsize) ;
 331                                                 }
 332                                         else if (psf->filelength < RIFFsize + 2 * SIGNED_SIZEOF (marker))
 333                                         {       if (marker == RIFF_MARKER)
 334                                                         psf_log_printf (psf, "RIFF : %u (should be %D)\n", RIFFsize, psf->filelength - 2 * SIGNED_SIZEOF (marker)) ;
 335                                                 else
 336                                                         psf_log_printf (psf, "RIFX : %u (should be %D)\n", RIFFsize, psf->filelength - 2 * SIGNED_SIZEOF (marker)) ;
 337
 338                                                 RIFFsize = psf->filelength - 2 * SIGNED_SIZEOF (RIFFsize) ;
 339                                                 }
 340                                         else
 341                                         {       if (marker == RIFF_MARKER)
 342                                                         psf_log_printf (psf, "RIFF : %u\n", RIFFsize) ;
 343                                                 else
 344                                                         psf_log_printf (psf, "RIFX : %u\n", RIFFsize) ;
 345                                         } ;
 346
 347                                         psf_binheader_readf (psf, "m", &marker) ;
 348                                         if (marker != WAVE_MARKER)
 349                                                 return SFE_WAV_NO_WAVE ;
 350                                         parsestage |= HAVE_WAVE ;
 351                                         psf_log_printf (psf, "WAVE\n") ;
 352                                         chunk_size = 0 ;
 353                                         break ;
 354
 355                         case fmt_MARKER :
 356                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE)) != (HAVE_RIFF | HAVE_WAVE))
 357                                                 return SFE_WAV_NO_FMT ;
 358
 359                                         /* If this file has a SECOND fmt chunk, I don't want to know about it. */
 360                                         if (parsestage & HAVE_fmt)
 361                                                 break ;
 362
 363                                         parsestage |= HAVE_fmt ;
 364
 365                                         psf_log_printf (psf, "fmt  : %d\n", chunk_size) ;
 366
 367                                         if ((error = wavlike_read_fmt_chunk (psf, chunk_size)))
 368                                                 return error ;
 369
 370                                         format = wav_fmt->format ;
 371                                         break ;
 372
 373                         case data_MARKER :
 374                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE | HAVE_fmt)) != (HAVE_RIFF | HAVE_WAVE | HAVE_fmt))
 375                                                 return SFE_WAV_NO_DATA ;
 376
 377                                         if (psf->file.mode == SFM_RDWR && (parsestage & HAVE_other) != 0)
 378                                                 return SFE_RDWR_BAD_HEADER ;
 379
 380                                         parsestage |= HAVE_data ;
 381
 382                                         psf->datalength = chunk_size ;
 383                                         if (psf->datalength & 1)
 384                                                 psf_log_printf (psf, "*** 'data' chunk should be an even number of bytes in length.\n") ;
 385
 386                                         psf->dataoffset = psf_ftell (psf) ;
 387
 388                                         if (psf->dataoffset > 0)
 389                                         {       if (chunk_size == 0 && RIFFsize == 8 && psf->filelength > 44)
 390                                                 {       psf_log_printf (psf, "*** Looks like a WAV file which wasn't closed properly. Fixing it.\n") ;
 391                                                         psf->datalength = psf->filelength - psf->dataoffset ;
 392                                                         } ;
 393
 394                                                 if (psf->datalength > psf->filelength - psf->dataoffset)
 395                                                 {       psf_log_printf (psf, "data : %D (should be %D)\n", psf->datalength, psf->filelength - psf->dataoffset) ;
 396                                                         psf->datalength = psf->filelength - psf->dataoffset ;
 397                                                         }
 398                                                 else
 399                                                         psf_log_printf (psf, "data : %D\n", psf->datalength) ;
 400
 401                                                 /* Only set dataend if there really is data at the end. */
 402                                                 if (psf->datalength + psf->dataoffset < psf->filelength)
 403                                                         psf->dataend = psf->datalength + psf->dataoffset ;
 404
 405                                                 psf->datalength += chunk_size & 1 ;
 406                                                 chunk_size = 0 ;
 407                                                 } ;
 408
 409                                         if (! psf->sf.seekable || psf->dataoffset < 0)
 410                                                 break ;
 411
 412                                         /* Seek past data and continue reading header. */
 413                                         psf_fseek (psf, psf->datalength, SEEK_CUR) ;
 414
 415                                         if (psf_ftell (psf) != psf->datalength + psf->dataoffset)
 416                                                 psf_log_printf (psf, "*** psf_fseek past end error ***\n") ;
 417                                         break ;
 418
 419                         case fact_MARKER :
 420                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE)) != (HAVE_RIFF | HAVE_WAVE))
 421                                                 return SFE_WAV_BAD_FACT ;
 422
 423                                         parsestage |= HAVE_fact ;
 424
 425                                         if ((parsestage & HAVE_fmt) != HAVE_fmt)
 426                                                 psf_log_printf (psf, "*** Should have 'fmt ' chunk before 'fact'\n") ;
 427
 428                                         psf_binheader_readf (psf, "4", & (fact_chunk.frames)) ;
 429
 430                                         if (chunk_size > SIGNED_SIZEOF (fact_chunk))
 431                                                 psf_binheader_readf (psf, "j", (int) (chunk_size - SIGNED_SIZEOF (fact_chunk))) ;
 432
 433                                         if (chunk_size)
 434                                                 psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 435                                         else
 436                                                 psf_log_printf (psf, "%M : %u (should not be zero)\n", marker, chunk_size) ;
 437
 438                                         psf_log_printf (psf, "  frames  : %d\n", fact_chunk.frames) ;
 439                                         break ;
 440
 441                         case PEAK_MARKER :
 442                                         if ((parsestage & (HAVE_RIFF | HAVE_WAVE | HAVE_fmt)) != (HAVE_RIFF | HAVE_WAVE | HAVE_fmt))
 443                                                 return SFE_WAV_PEAK_B4_FMT ;
 444
 445                                         parsestage |= HAVE_PEAK ;
 446
 447                                         psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 448                                         if ((error = wavlike_read_peak_chunk (psf, chunk_size)) != 0)
 449                                                 return error ;
 450                                         psf->peak_info->peak_loc = ((parsestage & HAVE_data) == 0) ? SF_PEAK_START : SF_PEAK_END ;
 451                                         break ;
 452
 453                         case cue_MARKER :
 454                                         parsestage |= HAVE_other ;
 455
 456                                         {       uint32_t thisread, bytesread, cue_count, position, offset ;
 457                                                 int id, chunk_id, chunk_start, block_start, cue_index ;
 458
 459                                                 bytesread = psf_binheader_readf (psf, "4", &cue_count) ;
 460                                                 psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 461
 462                                                 if (cue_count > 1000)
 463                                                 {       psf_log_printf (psf, "  Count : %u (skipping)\n", cue_count) ;
 464                                                         psf_binheader_readf (psf, "j", (cue_count > 20 ? 20 : cue_count) * 24) ;
 465                                                         break ;
 466                                                         } ;
 467
 468                                                 psf_log_printf (psf, "  Count : %d\n", cue_count) ;
 469
 470                                                 if ((psf->cues = psf_cues_alloc (cue_count)) == NULL)
 471                                                         return SFE_MALLOC_FAILED ;
 472
 473                                                 cue_index = 0 ;
 474
 475                                                 while (cue_count)
 476                                                 {
 477                                                         if ((thisread = psf_binheader_readf (psf, "e44m444", &id, &position, &chunk_id, &chunk_start, &block_start, &offset)) == 0)
 478                                                                 break ;
 479                                                         bytesread += thisread ;
 480
 481                                                         psf_log_printf (psf,    "   Cue ID : %2d"
 482                                                                                                         "  Pos : %5u  Chunk : %M"
 483                                                                                                         "  Chk Start : %d  Blk Start : %d"
 484                                                                                                         "  Offset : %5d\n",
 485                                                                         id, position, chunk_id, chunk_start, block_start, offset) ;
 486                                                         psf->cues->cue_points [cue_index].indx = id ;
 487                                                         psf->cues->cue_points [cue_index].position = position ;
 488                                                         psf->cues->cue_points [cue_index].fcc_chunk = chunk_id ;
 489                                                         psf->cues->cue_points [cue_index].chunk_start = chunk_start ;
 490                                                         psf->cues->cue_points [cue_index].block_start = block_start ;
 491                                                         psf->cues->cue_points [cue_index].sample_offset = offset ;
 492                                                         psf->cues->cue_points [cue_index].name [0] = '\0' ;
 493                                                         cue_count -- ;
 494                                                         cue_index ++ ;
 495                                                         } ;
 496
 497                                                 if (bytesread != chunk_size)
 498                                                 {       psf_log_printf (psf, "**** Chunk size weirdness (%d != %d)\n", chunk_size, bytesread) ;
 499                                                         psf_binheader_readf (psf, "j", chunk_size - bytesread) ;
 500                                                         } ;
 501                                                 } ;
 502                                         break ;
 503
 504                         case smpl_MARKER :
 505                                         parsestage |= HAVE_other ;
 506
 507                                         psf_log_printf (psf, "smpl : %u\n", chunk_size) ;
 508
 509                                         if ((error = wav_read_smpl_chunk (psf, chunk_size)))
 510                                                 return error ;
 511                                         break ;
 512
 513                         case acid_MARKER :
 514                                         parsestage |= HAVE_other ;
 515
 516                                         psf_log_printf (psf, "acid : %u\n", chunk_size) ;
 517
 518                                         if ((error = wav_read_acid_chunk (psf, chunk_size)))
 519                                                 return error ;
 520                                         break ;
 521
 522                         case INFO_MARKER :
 523                         case LIST_MARKER :
 524                                         parsestage |= HAVE_other ;
 525
 526                                         if ((error = wavlike_subchunk_parse (psf, marker, chunk_size)) != 0)
 527                                                 return error ;
 528                                         break ;
 529
 530                         case bext_MARKER :
 531                                         /*
 532                                         The 'bext' chunk can actually be updated, so don't need to set this.
 533                                         parsestage |= HAVE_other ;
 534                                         */
 535                                         if ((error = wavlike_read_bext_chunk (psf, chunk_size)))
 536                                                 return error ;
 537                                         break ;
 538
 539                         case PAD_MARKER :
 540                                         /*
 541                                         We can eat into a 'PAD ' chunk if we need to.
 542                                         parsestage |= HAVE_other ;
 543                                         */
 544                                         psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 545                                         psf_binheader_readf (psf, "j", chunk_size) ;
 546                                         break ;
 547
 548                         case cart_MARKER:
 549                                         if ((error = wavlike_read_cart_chunk (psf, chunk_size)))
 550                                                 return error ;
 551                                         break ;
 552
 553                         case iXML_MARKER : /* See http://en.wikipedia.org/wiki/IXML */
 554                         case strc_MARKER : /* Multiple of 32 bytes. */
 555                         case afsp_MARKER :
 556                         case clm_MARKER :
 557                         case elmo_MARKER :
 558                         case levl_MARKER :
 559                         case plst_MARKER :
 560                         case minf_MARKER :
 561                         case elm1_MARKER :
 562                         case regn_MARKER :
 563                         case ovwf_MARKER :
 564                         case inst_MARKER :
 565                         case AFAn_MARKER :
 566                         case umid_MARKER :
 567                         case SyLp_MARKER :
 568                         case Cr8r_MARKER :
 569                         case JUNK_MARKER :
 570                         case PMX_MARKER :
 571                         case DISP_MARKER :
 572                         case MEXT_MARKER :
 573                         case FLLR_MARKER :
 574                                         psf_log_printf (psf, "%M : %u\n", marker, chunk_size) ;
 575                                         psf_binheader_readf (psf, "j", chunk_size) ;
 576                                         break ;
 577
 578                         default :
 579                                         if (chunk_size >= 0xffff0000)
 580                                         {       done = SF_TRUE ;
 581                                                 psf_log_printf (psf, "*** Unknown chunk marker (%X) at position %D with length %u. Exiting parser.\n", marker, psf_ftell (psf) - 8, chunk_size) ;
 582                                                 break ;
 583                                                 } ;
 584
 585                                         if (psf_isprint ((marker >> 24) & 0xFF) && psf_isprint ((marker >> 16) & 0xFF)
 586                                                 && psf_isprint ((marker >> 8) & 0xFF) && psf_isprint (marker & 0xFF))
 587                                         {       psf_log_printf (psf, "*** %M : %u (unknown marker)\n", marker, chunk_size) ;
 588                                                 psf_binheader_readf (psf, "j", chunk_size) ;
 589                                                 break ;
 590                                                 } ;
 591                                         if (psf_ftell (psf) & 0x03)
 592                                         {       psf_log_printf (psf, "  Unknown chunk marker at position %D. Resynching.\n", psf_ftell (psf) - 8) ;
 593                                                 psf_binheader_readf (psf, "j", -3) ;
 594                                                 /* File is too messed up so we prevent editing in RDWR mode here. */
 595                                                 parsestage |= HAVE_other ;
 596                                                 break ;
 597                                                 } ;
 598                                         psf_log_printf (psf, "*** Unknown chunk marker (%X) at position %D. Exiting parser.\n", marker, psf_ftell (psf) - 8) ;
 599                                         done = SF_TRUE ;
 600                                         break ;
 601                         } ;     /* switch (marker) */
 602
 603                 if (chunk_size >= psf->filelength)
 604                 {       psf_log_printf (psf, "*** Chunk size %u > file length %D. Exiting parser.\n", chunk_size, psf->filelength) ;
 605                         break ;
 606                         } ;
 607
 608                 if (! psf->sf.seekable && (parsestage & HAVE_data))
 609                         break ;
 610
 611                 if (psf_ftell (psf) >= psf->filelength - SIGNED_SIZEOF (chunk_size))
 612                 {       psf_log_printf (psf, "End\n") ;
 613                         break ;
 614                         } ;
 615                 } ; /* while (1) */
 616
 617         if (psf->dataoffset <= 0)
 618                 return SFE_WAV_NO_DATA ;
 619
 620         if (psf->sf.channels < 1)
 621                 return SFE_CHANNEL_COUNT_ZERO ;
 622
 623         if (psf->sf.channels >= SF_MAX_CHANNELS)
 624                 return SFE_CHANNEL_COUNT ;
 625
 626         if (format != WAVE_FORMAT_PCM && (parsestage & HAVE_fact) == 0)
 627                 psf_log_printf (psf, "**** All non-PCM format files should have a 'fact' chunk.\n") ;
 628
 629         /* WAVs can be little or big endian */
 630         psf->endian = psf->rwf_endian ;
 631
 632         psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
 633
 634         if (psf->is_pipe == 0)
 635         {       /*
 636                 ** Check for 'wvpk' at the start of the DATA section. Not able to
 637                 ** handle this.
 638                 */
 639                 psf_binheader_readf (psf, "4", &marker) ;
 640                 if (marker == wvpk_MARKER || marker == OggS_MARKER)
 641                         return SFE_WAV_WVPK_DATA ;
 642                 } ;
 643
 644         /* Seek to start of DATA section. */
 645         psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
 646
 647         if (psf->blockwidth)
 648         {       if (psf->filelength - psf->dataoffset < psf->datalength)
 649                         psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
 650                 else
 651                         psf->sf.frames = psf->datalength / psf->blockwidth ;
 652                 } ;
 653
 654         switch (format)
 655         {       case WAVE_FORMAT_EXTENSIBLE :
 656                         if (psf->sf.format == (SF_FORMAT_WAVEX | SF_FORMAT_MS_ADPCM))
 657                         {       *blockalign = wav_fmt->msadpcm.blockalign ;
 658                                 *framesperblock = wav_fmt->msadpcm.samplesperblock ;
 659                                 } ;
 660                         break ;
 661
 662                 case WAVE_FORMAT_PCM :
 663                                         psf->sf.format = SF_FORMAT_WAV | u_bitwidth_to_subformat (psf->bytewidth * 8) ;
 664                                         break ;
 665
 666                 case WAVE_FORMAT_MULAW :
 667                 case IBM_FORMAT_MULAW :
 668                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_ULAW) ;
 669                                         break ;
 670
 671                 case WAVE_FORMAT_ALAW :
 672                 case IBM_FORMAT_ALAW :
 673                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_ALAW) ;
 674                                         break ;
 675
 676                 case WAVE_FORMAT_MS_ADPCM :
 677                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_MS_ADPCM) ;
 678                                         *blockalign = wav_fmt->msadpcm.blockalign ;
 679                                         *framesperblock = wav_fmt->msadpcm.samplesperblock ;
 680                                         break ;
 681
 682                 case WAVE_FORMAT_IMA_ADPCM :
 683                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_IMA_ADPCM) ;
 684                                         *blockalign = wav_fmt->ima.blockalign ;
 685                                         *framesperblock = wav_fmt->ima.samplesperblock ;
 686                                         break ;
 687
 688                 case WAVE_FORMAT_GSM610 :
 689                                         psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_GSM610) ;
 690                                         break ;
 691
 692                 case WAVE_FORMAT_IEEE_FLOAT :
 693                                         psf->sf.format = SF_FORMAT_WAV ;
 694                                         psf->sf.format |= (psf->bytewidth == 8) ? SF_FORMAT_DOUBLE : SF_FORMAT_FLOAT ;
 695                                         break ;
 696
 697                 case WAVE_FORMAT_G721_ADPCM :
 698                                         psf->sf.format = SF_FORMAT_WAV | SF_FORMAT_G721_32 ;
 699                                         break ;
 700
 701                 default : return SFE_UNIMPLEMENTED ;
 702                 } ;
 703
 704         if (wpriv->fmt_is_broken)
 705                 wavlike_analyze (psf) ;
 706
 707         /* Only set the format endian-ness if its non-standard big-endian. */
 708         if (psf->endian == SF_ENDIAN_BIG)
 709                 psf->sf.format |= SF_ENDIAN_BIG ;
 710
 711         return 0 ;
 712 } /* wav_read_header */
 713
 714 static int
 715 wav_write_fmt_chunk (SF_PRIVATE *psf)
 716 {       int subformat, fmt_size, add_fact_chunk = 0 ;
 717
 718         subformat = SF_CODEC (psf->sf.format) ;
 719
 720         switch (subformat)
 721         {       case SF_FORMAT_PCM_U8 :
 722                 case SF_FORMAT_PCM_16 :
 723                 case SF_FORMAT_PCM_24 :
 724                 case SF_FORMAT_PCM_32 :
 725                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
 726
 727                                         /* fmt : format, channels, samplerate */
 728                                         psf_binheader_writef (psf, "4224", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_PCM), BHW2 (psf->sf.channels), BHW4 (psf->sf.samplerate)) ;
 729                                         /*  fmt : bytespersec */
 730                                         psf_binheader_writef (psf, "4", BHW4 (psf->sf.samplerate * psf->bytewidth * psf->sf.channels)) ;
 731                                         /*  fmt : blockalign, bitwidth */
 732                                         psf_binheader_writef (psf, "22", BHW2 (psf->bytewidth * psf->sf.channels), BHW2 (psf->bytewidth * 8)) ;
 733                                         break ;
 734
 735                 case SF_FORMAT_FLOAT :
 736                 case SF_FORMAT_DOUBLE :
 737                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
 738
 739                                         /* fmt : format, channels, samplerate */
 740                                         psf_binheader_writef (psf, "4224", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_IEEE_FLOAT), BHW2 (psf->sf.channels), BHW4 (psf->sf.samplerate)) ;
 741                                         /*  fmt : bytespersec */
 742                                         psf_binheader_writef (psf, "4", BHW4 (psf->sf.samplerate * psf->bytewidth * psf->sf.channels)) ;
 743                                         /*  fmt : blockalign, bitwidth */
 744                                         psf_binheader_writef (psf, "22", BHW2 (psf->bytewidth * psf->sf.channels), BHW2 (psf->bytewidth * 8)) ;
 745
 746                                         add_fact_chunk = SF_TRUE ;
 747                                         break ;
 748
 749                 case SF_FORMAT_ULAW :
 750                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 ;
 751
 752                                         /* fmt : format, channels, samplerate */
 753                                         psf_binheader_writef (psf, "4224", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_MULAW), BHW2 (psf->sf.channels), BHW4 (psf->sf.samplerate)) ;
 754                                         /*  fmt : bytespersec */
 755                                         psf_binheader_writef (psf, "4", BHW4 (psf->sf.samplerate * psf->bytewidth * psf->sf.channels)) ;
 756                                         /*  fmt : blockalign, bitwidth, extrabytes */
 757                                         psf_binheader_writef (psf, "222", BHW2 (psf->bytewidth * psf->sf.channels), BHW2 (8), BHW2 (0)) ;
 758
 759                                         add_fact_chunk = SF_TRUE ;
 760                                         break ;
 761
 762                 case SF_FORMAT_ALAW :
 763                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 ;
 764
 765                                         /* fmt : format, channels, samplerate */
 766                                         psf_binheader_writef (psf, "4224", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_ALAW), BHW2 (psf->sf.channels), BHW4 (psf->sf.samplerate)) ;
 767                                         /*  fmt : bytespersec */
 768                                         psf_binheader_writef (psf, "4", BHW4 (psf->sf.samplerate * psf->bytewidth * psf->sf.channels)) ;
 769                                         /*  fmt : blockalign, bitwidth, extrabytes */
 770                                         psf_binheader_writef (psf, "222", BHW2 (psf->bytewidth * psf->sf.channels), BHW2 (8), BHW2 (0)) ;
 771
 772                                         add_fact_chunk = SF_TRUE ;
 773                                         break ;
 774
 775                 /* Lite remove start */
 776                 case SF_FORMAT_IMA_ADPCM :
 777                                         {       int blockalign, framesperblock, bytespersec ;
 778
 779                                                 blockalign              = wavlike_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
 780                                                 framesperblock  = 2 * (blockalign - 4 * psf->sf.channels) / psf->sf.channels + 1 ;
 781                                                 bytespersec             = (psf->sf.samplerate * blockalign) / framesperblock ;
 782
 783                                                 /* fmt chunk. */
 784                                                 fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
 785
 786                                                 /* fmt : size, WAV format type, channels, samplerate, bytespersec */
 787                                                 psf_binheader_writef (psf, "42244", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_IMA_ADPCM),
 788                                                                         BHW2 (psf->sf.channels), BHW4 (psf->sf.samplerate), BHW4 (bytespersec)) ;
 789
 790                                                 /* fmt : blockalign, bitwidth, extrabytes, framesperblock. */
 791                                                 psf_binheader_writef (psf, "2222", BHW2 (blockalign), BHW2 (4), BHW2 (2), BHW2 (framesperblock)) ;
 792                                                 } ;
 793
 794                                         add_fact_chunk = SF_TRUE ;
 795                                         break ;
 796
 797                 case SF_FORMAT_MS_ADPCM :
 798                                         {       int     blockalign, framesperblock, bytespersec, extrabytes ;
 799
 800                                                 blockalign              = wavlike_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
 801                                                 framesperblock  = 2 + 2 * (blockalign - 7 * psf->sf.channels) / psf->sf.channels ;
 802                                                 bytespersec             = (psf->sf.samplerate * blockalign) / framesperblock ;
 803
 804                                                 /* fmt chunk. */
 805                                                 extrabytes      = 2 + 2 + WAVLIKE_MSADPCM_ADAPT_COEFF_COUNT * (2 + 2) ;
 806                                                 fmt_size        = 2 + 2 + 4 + 4 + 2 + 2 + 2 + extrabytes ;
 807
 808                                                 /* fmt : size, WAV format type, channels. */
 809                                                 psf_binheader_writef (psf, "422", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_MS_ADPCM), BHW2 (psf->sf.channels)) ;
 810
 811                                                 /* fmt : samplerate, bytespersec. */
 812                                                 psf_binheader_writef (psf, "44", BHW4 (psf->sf.samplerate), BHW4 (bytespersec)) ;
 813
 814                                                 /* fmt : blockalign, bitwidth, extrabytes, framesperblock. */
 815                                                 psf_binheader_writef (psf, "22222", BHW2 (blockalign), BHW2 (4), BHW2 (extrabytes), BHW2 (framesperblock), BHW2 (7)) ;
 816
 817                                                 wavlike_msadpcm_write_adapt_coeffs (psf) ;
 818                                                 } ;
 819
 820                                         add_fact_chunk = SF_TRUE ;
 821                                         break ;
 822
 823
 824                 case SF_FORMAT_G721_32 :
 825                                         /* fmt chunk. */
 826                                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
 827
 828                                         /* fmt : size, WAV format type, channels, samplerate, bytespersec */
 829                                         psf_binheader_writef (psf, "42244", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_G721_ADPCM),
 830                                                                 BHW2 (psf->sf.channels), BHW4 (psf->sf.samplerate), BHW4 (psf->sf.samplerate * psf->sf.channels / 2)) ;
 831
 832                                         /* fmt : blockalign, bitwidth, extrabytes, auxblocksize. */
 833                                         psf_binheader_writef (psf, "2222", BHW2 (64), BHW2 (4), BHW2 (2), BHW2 (0)) ;
 834
 835                                         add_fact_chunk = SF_TRUE ;
 836                                         break ;
 837
 838                 /* Lite remove end */
 839
 840                 case SF_FORMAT_GSM610 :
 841                                         {       int     blockalign, framesperblock, bytespersec ;
 842
 843                                                 blockalign              = WAVLIKE_GSM610_BLOCKSIZE ;
 844                                                 framesperblock  = WAVLIKE_GSM610_SAMPLES ;
 845                                                 bytespersec             = (psf->sf.samplerate * blockalign) / framesperblock ;
 846
 847                                                 /* fmt chunk. */
 848                                                 fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
 849
 850                                                 /* fmt : size, WAV format type, channels. */
 851                                                 psf_binheader_writef (psf, "422", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_GSM610), BHW2 (psf->sf.channels)) ;
 852
 853                                                 /* fmt : samplerate, bytespersec. */
 854                                                 psf_binheader_writef (psf, "44", BHW4 (psf->sf.samplerate), BHW4 (bytespersec)) ;
 855
 856                                                 /* fmt : blockalign, bitwidth, extrabytes, framesperblock. */
 857                                                 psf_binheader_writef (psf, "2222", BHW2 (blockalign), BHW2 (0), BHW2 (2), BHW2 (framesperblock)) ;
 858                                                 } ;
 859
 860                                         add_fact_chunk = SF_TRUE ;
 861                                         break ;
 862
 863                 default :       return SFE_UNIMPLEMENTED ;
 864                 } ;
 865
 866         if (add_fact_chunk)
 867                 psf_binheader_writef (psf, "tm48", BHWm (fact_MARKER), BHW4 (4), BHW8 (psf->sf.frames)) ;
 868
 869         return 0 ;
 870 } /* wav_write_fmt_chunk */
 871
 872 static int
 873 wavex_write_fmt_chunk (SF_PRIVATE *psf)
 874 {       WAVLIKE_PRIVATE *wpriv ;
 875         int subformat, fmt_size ;
 876
 877         if ((wpriv = psf->container_data) == NULL)
 878                 return SFE_INTERNAL ;
 879
 880         subformat = SF_CODEC (psf->sf.format) ;
 881
 882         /* initial section (same for all, it appears) */
 883         switch (subformat)
 884         {       case SF_FORMAT_PCM_U8 :
 885                 case SF_FORMAT_PCM_16 :
 886                 case SF_FORMAT_PCM_24 :
 887                 case SF_FORMAT_PCM_32 :
 888                 case SF_FORMAT_FLOAT :
 889                 case SF_FORMAT_DOUBLE :
 890                 case SF_FORMAT_ULAW :
 891                 case SF_FORMAT_ALAW :
 892                         fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 + 4 + 4 + 2 + 2 + 8 ;
 893
 894                         /* fmt : format, channels, samplerate */
 895                         psf_binheader_writef (psf, "4224", BHW4 (fmt_size), BHW2 (WAVE_FORMAT_EXTENSIBLE), BHW2 (psf->sf.channels), BHW4 (psf->sf.samplerate)) ;
 896                         /*  fmt : bytespersec */
 897                         psf_binheader_writef (psf, "4", BHW4 (psf->sf.samplerate * psf->bytewidth * psf->sf.channels)) ;
 898                         /*  fmt : blockalign, bitwidth */
 899                         psf_binheader_writef (psf, "22", BHW2 (psf->bytewidth * psf->sf.channels), BHW2 (psf->bytewidth * 8)) ;
 900
 901                         /* cbSize 22 is sizeof (WAVEFORMATEXTENSIBLE) - sizeof (WAVEFORMATEX) */
 902                         psf_binheader_writef (psf, "2", BHW2 (22)) ;
 903
 904                         /* wValidBitsPerSample, for our use same as bitwidth as we use it fully */
 905                         psf_binheader_writef (psf, "2", BHW2 (psf->bytewidth * 8)) ;
 906
 907                         /* For an Ambisonic file set the channel mask to zero.
 908                         ** Otherwise use a default based on the channel count.
 909                         */
 910                         if (wpriv->wavex_ambisonic != SF_AMBISONIC_NONE)
 911                                 psf_binheader_writef (psf, "4", BHW4 (0)) ;
 912                         else if (wpriv->wavex_channelmask != 0)
 913                                 psf_binheader_writef (psf, "4", BHW4 (wpriv->wavex_channelmask)) ;
 914                         else
 915                         {       /*
 916                                 ** Ok some liberty is taken here to use the most commonly used channel masks
 917                                 ** instead of "no mapping". If you really want to use "no mapping" for 8 channels and less
 918                                 ** please don't use wavex. (otherwise we'll have to create a new SF_COMMAND)
 919                                 */
 920                                 switch (psf->sf.channels)
 921                                 {       case 1 :        /* center channel mono */
 922                                                 psf_binheader_writef (psf, "4", BHW4 (0x4)) ;
 923                                                 break ;
 924
 925                                         case 2 :        /* front left and right */
 926                                                 psf_binheader_writef (psf, "4", BHW4 (0x1 | 0x2)) ;
 927                                                 break ;
 928
 929                                         case 4 :        /* Quad */
 930                                                 psf_binheader_writef (psf, "4", BHW4 (0x1 | 0x2 | 0x10 | 0x20)) ;
 931                                                 break ;
 932
 933                                         case 6 :        /* 5.1 */
 934                                                 psf_binheader_writef (psf, "4", BHW4 (0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20)) ;
 935                                                 break ;
 936
 937                                         case 8 :        /* 7.1 */
 938                                                 psf_binheader_writef (psf, "4", BHW4 (0x1 | 0x2 | 0x4 | 0x8 | 0x10 | 0x20 | 0x40 | 0x80)) ;
 939                                                 break ;
 940
 941                                         default :       /* 0 when in doubt , use direct out, ie NO mapping*/
 942                                                 psf_binheader_writef (psf, "4", BHW4 (0x0)) ;
 943                                                 break ;
 944                                         } ;
 945                                 } ;
 946                         break ;
 947
 948                 case SF_FORMAT_MS_ADPCM : /* Todo, GUID exists might have different header as per wav_write_header */
 949                 default :
 950                         return SFE_UNIMPLEMENTED ;
 951                 } ;
 952
 953         /* GUID section, different for each */
 954
 955         switch (subformat)
 956         {       case SF_FORMAT_PCM_U8 :
 957                 case SF_FORMAT_PCM_16 :
 958                 case SF_FORMAT_PCM_24 :
 959                 case SF_FORMAT_PCM_32 :
 960                         wavlike_write_guid (psf, wpriv->wavex_ambisonic == SF_AMBISONIC_NONE ?
 961                                                 &MSGUID_SUBTYPE_PCM : &MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_PCM) ;
 962                         break ;
 963
 964                 case SF_FORMAT_FLOAT :
 965                 case SF_FORMAT_DOUBLE :
 966                         wavlike_write_guid (psf, wpriv->wavex_ambisonic == SF_AMBISONIC_NONE ?
 967                                                 &MSGUID_SUBTYPE_IEEE_FLOAT : &MSGUID_SUBTYPE_AMBISONIC_B_FORMAT_IEEE_FLOAT) ;
 968                         break ;
 969
 970                 case SF_FORMAT_ULAW :
 971                         wavlike_write_guid (psf, &MSGUID_SUBTYPE_MULAW) ;
 972                         break ;
 973
 974                 case SF_FORMAT_ALAW :
 975                         wavlike_write_guid (psf, &MSGUID_SUBTYPE_ALAW) ;
 976                         break ;
 977
 978 #if 0
 979                 /* This is dead code due to return in previous switch statement. */
 980                 case SF_FORMAT_MS_ADPCM : /* todo, GUID exists */
 981                         wavlike_write_guid (psf, &MSGUID_SUBTYPE_MS_ADPCM) ;
 982                         break ;
 983                         return SFE_UNIMPLEMENTED ;
 984 #endif
 985
 986                 default : return SFE_UNIMPLEMENTED ;
 987                 } ;
 988
 989         psf_binheader_writef (psf, "tm48", BHWm (fact_MARKER), BHW4 (4), BHW8 (psf->sf.frames)) ;
 990
 991         return 0 ;
 992 } /* wavex_write_fmt_chunk */
 993
 994
 995 static int
 996 wav_write_header (SF_PRIVATE *psf, int calc_length)
 997 {       sf_count_t      current ;
 998         int             error, has_data = SF_FALSE ;
 999
1000         current = psf_ftell (psf) ;
1001
1002         if (current > psf->dataoffset)
1003                 has_data = SF_TRUE ;
1004
1005         if (calc_length)
1006         {       psf->filelength = psf_get_filelen (psf) ;
1007
1008                 psf->datalength = psf->filelength - psf->dataoffset ;
1009
1010                 if (psf->dataend)
1011                         psf->datalength -= psf->filelength - psf->dataend ;
1012                 else if (psf->bytewidth > 0 && psf->sf.seekable == SF_TRUE)
1013                         psf->datalength = psf->sf.frames * psf->bytewidth * psf->sf.channels ;
1014                 } ;
1015
1016         /* Reset the current header length to zero. */
1017         psf->header.ptr [0] = 0 ;
1018         psf->header.indx = 0 ;
1019         psf_fseek (psf, 0, SEEK_SET) ;
1020
1021         /*
1022         ** RIFX signifies big-endian format for all header and data.
1023         ** To prevent lots of code copying here, we'll set the psf->rwf_endian flag
1024         ** once here, and never specify endian-ness for all other header operations.
1025         */
1026
1027         /* RIFF/RIFX marker, length, WAVE and 'fmt ' markers. */
1028
1029         if (psf->endian == SF_ENDIAN_LITTLE)
1030                 psf_binheader_writef (psf, "etm8", BHWm (RIFF_MARKER), BHW8 ((psf->filelength < 8) ? 8 : psf->filelength - 8)) ;
1031         else
1032                 psf_binheader_writef (psf, "Etm8", BHWm (RIFX_MARKER), BHW8 ((psf->filelength < 8) ? 8 : psf->filelength - 8)) ;
1033
1034         /* WAVE and 'fmt ' markers. */
1035         psf_binheader_writef (psf, "mm", BHWm (WAVE_MARKER), BHWm (fmt_MARKER)) ;
1036
1037         /* Write the 'fmt ' chunk. */
1038         switch (SF_CONTAINER (psf->sf.format))
1039         {       case SF_FORMAT_WAV :
1040                                 if ((error = wav_write_fmt_chunk (psf)) != 0)
1041                                         return error ;
1042                                 break ;
1043
1044                 case SF_FORMAT_WAVEX :
1045                                 if ((error = wavex_write_fmt_chunk (psf)) != 0)
1046                                         return error ;
1047                                 break ;
1048
1049                 default :
1050                                 return SFE_UNIMPLEMENTED ;
1051                 } ;
1052
1053         /* The LIST/INFO chunk. */
1054         if (psf->strings.flags & SF_STR_LOCATE_START)
1055                 wavlike_write_strings (psf, SF_STR_LOCATE_START) ;
1056
1057         if (psf->peak_info != NULL && psf->peak_info->peak_loc == SF_PEAK_START)
1058                 wavlike_write_peak_chunk (psf) ;
1059
1060         if (psf->broadcast_16k != NULL)
1061                 wavlike_write_bext_chunk (psf) ;
1062
1063         if (psf->cart_16k != NULL)
1064                 wavlike_write_cart_chunk (psf) ;
1065
1066         if (psf->cues != NULL)
1067         {       uint32_t k ;
1068
1069                 psf_binheader_writef (psf, "em44", BHWm (cue_MARKER), BHW4 (4 + psf->cues->cue_count * 6 * 4), BHW4 (psf->cues->cue_count)) ;
1070
1071                 for (k = 0 ; k < psf->cues->cue_count ; k++)
1072                         psf_binheader_writef (psf, "e44m444", BHW4 (psf->cues->cue_points [k].indx), BHW4 (psf->cues->cue_points [k].position),
1073                                                 BHWm (psf->cues->cue_points [k].fcc_chunk), BHW4 (psf->cues->cue_points [k].chunk_start),
1074                                                 BHW4 (psf->cues->cue_points [k].block_start), BHW4 (psf->cues->cue_points [k].sample_offset)) ;
1075                 } ;
1076
1077         if (psf->instrument != NULL)
1078         {       int             tmp ;
1079                 double  dtune = (double) (0x40000000) / 25.0 ;
1080
1081                 psf_binheader_writef (psf, "m4", BHWm (smpl_MARKER), BHW4 (9 * 4 + psf->instrument->loop_count * 6 * 4)) ;
1082                 psf_binheader_writef (psf, "44", BHW4 (0), BHW4 (0)) ; /* Manufacturer zero is everyone */
1083                 tmp = (int) (1.0e9 / psf->sf.samplerate) ; /* Sample period in nano seconds */
1084                 psf_binheader_writef (psf, "44", BHW4 (tmp), BHW4 (psf->instrument->basenote)) ;
1085                 tmp = (uint32_t) (psf->instrument->detune * dtune + 0.5) ;
1086                 psf_binheader_writef (psf, "4", BHW4 (tmp)) ;
1087                 psf_binheader_writef (psf, "44", BHW4 (0), BHW4 (0)) ; /* SMTPE format */
1088                 psf_binheader_writef (psf, "44", BHW4 (psf->instrument->loop_count), BHW4 (0)) ;
1089
1090                 for (tmp = 0 ; tmp < psf->instrument->loop_count ; tmp++)
1091                 {       int type ;
1092
1093                         type = psf->instrument->loops [tmp].mode ;
1094                         type = (type == SF_LOOP_FORWARD ? 0 : type == SF_LOOP_BACKWARD ? 2 : type == SF_LOOP_ALTERNATING ? 1 : 32) ;
1095
1096                         psf_binheader_writef (psf, "44", BHW4 (tmp), BHW4 (type)) ;
1097                         psf_binheader_writef (psf, "44", BHW4 (psf->instrument->loops [tmp].start), BHW4 (psf->instrument->loops [tmp].end - 1)) ;
1098                         psf_binheader_writef (psf, "44", BHW4 (0), BHW4 (psf->instrument->loops [tmp].count)) ;
1099                         } ;
1100                 } ;
1101
1102         /* Write custom headers. */
1103         if (psf->wchunks.used > 0)
1104                 wavlike_write_custom_chunks (psf) ;
1105
1106         if (psf->header.indx + 16 < psf->dataoffset)
1107         {       /* Add PAD data if necessary. */
1108                 size_t k = psf->dataoffset - (psf->header.indx + 16) ;
1109                 psf_binheader_writef (psf, "m4z", BHWm (PAD_MARKER), BHW4 (k), BHWz (k)) ;
1110                 } ;
1111
1112         psf_binheader_writef (psf, "tm8", BHWm (data_MARKER), BHW8 (psf->datalength)) ;
1113         psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ;
1114         if (psf->error)
1115                 return psf->error ;
1116
1117         if (has_data && psf->dataoffset != psf->header.indx)
1118         {       psf_log_printf (psf, "Oooops : has_data && psf->dataoffset != psf->header.indx\n") ;
1119                 return psf->error = SFE_INTERNAL ;
1120                 } ;
1121
1122         psf->dataoffset = psf->header.indx ;
1123
1124         if (! has_data)
1125                 psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
1126         else if (current > 0)
1127                 psf_fseek (psf, current, SEEK_SET) ;
1128
1129         return psf->error ;
1130 } /* wav_write_header */
1131
1132
1133 static int
1134 wav_write_tailer (SF_PRIVATE *psf)
1135 {
1136         /* Reset the current header buffer length to zero. */
1137         psf->header.ptr [0] = 0 ;
1138         psf->header.indx = 0 ;
1139
1140         if (psf->bytewidth > 0 && psf->sf.seekable == SF_TRUE)
1141         {       psf->datalength = psf->sf.frames * psf->bytewidth * psf->sf.channels ;
1142                 psf->dataend = psf->dataoffset + psf->datalength ;
1143                 } ;
1144
1145         if (psf->dataend > 0)
1146                 psf_fseek (psf, psf->dataend, SEEK_SET) ;
1147         else
1148                 psf->dataend = psf_fseek (psf, 0, SEEK_END) ;
1149
1150         if (psf->dataend & 1)
1151                 psf_binheader_writef (psf, "z", BHWz (1)) ;
1152
1153         /* Add a PEAK chunk if requested. */
1154         if (psf->peak_info != NULL && psf->peak_info->peak_loc == SF_PEAK_END)
1155                 wavlike_write_peak_chunk (psf) ;
1156
1157         if (psf->strings.flags & SF_STR_LOCATE_END)
1158                 wavlike_write_strings (psf, SF_STR_LOCATE_END) ;
1159
1160         /* Write the tailer. */
1161         if (psf->header.indx > 0)
1162                 psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ;
1163
1164         return 0 ;
1165 } /* wav_write_tailer */
1166
1167 static int
1168 wav_close (SF_PRIVATE *psf)
1169 {
1170         if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
1171         {       wav_write_tailer (psf) ;
1172
1173                 if (psf->file.mode == SFM_RDWR)
1174                 {       sf_count_t current = psf_ftell (psf) ;
1175
1176                         /*
1177                         **      If the mode is RDWR and the current position is less than the
1178                         **      filelength, truncate the file.
1179                         */
1180
1181                         if (current < psf->filelength)
1182                         {       psf_ftruncate (psf, current) ;
1183                                 psf->filelength = current ;
1184                                 } ;
1185                         } ;
1186
1187                 psf->write_header (psf, SF_TRUE) ;
1188                 } ;
1189
1190         return 0 ;
1191 } /* wav_close */
1192
1193 static int
1194 wav_command (SF_PRIVATE *psf, int command, void * UNUSED (data), int datasize)
1195 {       WAVLIKE_PRIVATE *wpriv ;
1196
1197         if ((wpriv = psf->container_data) == NULL)
1198                 return SFE_INTERNAL ;
1199
1200         switch (command)
1201         {       case SFC_WAVEX_SET_AMBISONIC :
1202                         if ((SF_CONTAINER (psf->sf.format)) == SF_FORMAT_WAVEX)
1203                         {       if (datasize == SF_AMBISONIC_NONE)
1204                                         wpriv->wavex_ambisonic = SF_AMBISONIC_NONE ;
1205                                 else if (datasize == SF_AMBISONIC_B_FORMAT)
1206                                         wpriv->wavex_ambisonic = SF_AMBISONIC_B_FORMAT ;
1207                                 else
1208                                         return 0 ;
1209                                 } ;
1210                         return wpriv->wavex_ambisonic ;
1211
1212                 case SFC_WAVEX_GET_AMBISONIC :
1213                         return wpriv->wavex_ambisonic ;
1214
1215                 case SFC_SET_CHANNEL_MAP_INFO :
1216                         wpriv->wavex_channelmask = wavlike_gen_channel_mask (psf->channel_map, psf->sf.channels) ;
1217                         return (wpriv->wavex_channelmask != 0) ;
1218
1219                 default :
1220                         break ;
1221         } ;
1222
1223         return 0 ;
1224 } /* wav_command */
1225
1226 static int
1227 wav_read_smpl_chunk (SF_PRIVATE *psf, uint32_t chunklen)
1228 {       char buffer [512] ;
1229         uint32_t thisread, bytesread = 0, dword, sampler_data, loop_count ;
1230         uint32_t note, pitch, start, end, type = -1, count ;
1231         int j, k ;
1232
1233         chunklen += (chunklen & 1) ;
1234
1235         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1236         psf_log_printf (psf, "  Manufacturer : %X\n", dword) ;
1237
1238         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1239         psf_log_printf (psf, "  Product      : %u\n", dword) ;
1240
1241         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1242         psf_log_printf (psf, "  Period       : %u nsec\n", dword) ;
1243
1244         bytesread += psf_binheader_readf (psf, "4", &note) ;
1245         psf_log_printf (psf, "  Midi Note    : %u\n", note) ;
1246
1247         bytesread += psf_binheader_readf (psf, "4", &pitch) ;
1248         if (pitch != 0)
1249         {       snprintf (buffer, sizeof (buffer), "%f",
1250                                         (1.0 * 0x80000000) / ((uint32_t) pitch)) ;
1251                 psf_log_printf (psf, "  Pitch Fract. : %s\n", buffer) ;
1252                 }
1253         else
1254                 psf_log_printf (psf, "  Pitch Fract. : 0\n") ;
1255
1256         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1257         psf_log_printf (psf, "  SMPTE Format : %u\n", dword) ;
1258
1259         bytesread += psf_binheader_readf (psf, "4", &dword) ;
1260         snprintf (buffer, sizeof (buffer), "%02d:%02d:%02d %02d",
1261                                 (dword >> 24) & 0x7F, (dword >> 16) & 0x7F, (dword >> 8) & 0x7F, dword & 0x7F) ;
1262         psf_log_printf (psf, "  SMPTE Offset : %s\n", buffer) ;
1263
1264         bytesread += psf_binheader_readf (psf, "4", &loop_count) ;
1265         psf_log_printf (psf, "  Loop Count   : %u\n", loop_count) ;
1266
1267         if (loop_count == 0 && chunklen == bytesread)
1268                 return 0 ;
1269
1270         /* Sampler Data holds the number of data bytes after the CUE chunks which
1271         ** is not actually CUE data. Display value after CUE data.
1272         */
1273         bytesread += psf_binheader_readf (psf, "4", &sampler_data) ;
1274
1275         if ((psf->instrument = psf_instrument_alloc ()) == NULL)
1276                 return SFE_MALLOC_FAILED ;
1277
1278         psf->instrument->loop_count = loop_count ;
1279
1280         for (j = 0 ; loop_count > 0 && chunklen - bytesread >= 24 ; j ++)
1281         {       if ((thisread = psf_binheader_readf (psf, "4", &dword)) == 0)
1282                         break ;
1283                 bytesread += thisread ;
1284                 psf_log_printf (psf, "    Cue ID : %2u", dword) ;
1285
1286                 bytesread += psf_binheader_readf (psf, "4", &type) ;
1287                 psf_log_printf (psf, "  Type : %2u", type) ;
1288
1289                 bytesread += psf_binheader_readf (psf, "4", &start) ;
1290                 psf_log_printf (psf, "  Start : %5u", start) ;
1291
1292                 bytesread += psf_binheader_readf (psf, "4", &end) ;
1293                 psf_log_printf (psf, "  End : %5u", end) ;
1294
1295                 bytesread += psf_binheader_readf (psf, "4", &dword) ;
1296                 psf_log_printf (psf, "  Fraction : %5u", dword) ;
1297
1298                 bytesread += psf_binheader_readf (psf, "4", &count) ;
1299                 psf_log_printf (psf, "  Count : %5u\n", count) ;
1300
1301                 if (j < ARRAY_LEN (psf->instrument->loops))
1302                 {       psf->instrument->loops [j].start = start ;
1303                         psf->instrument->loops [j].end = end + 1 ;
1304                         psf->instrument->loops [j].count = count ;
1305
1306                         switch (type)
1307                         {       case 0 :
1308                                         psf->instrument->loops [j].mode = SF_LOOP_FORWARD ;
1309                                         break ;
1310                                 case 1 :
1311                                         psf->instrument->loops [j].mode = SF_LOOP_ALTERNATING ;
1312                                         break ;
1313                                 case 2 :
1314                                         psf->instrument->loops [j].mode = SF_LOOP_BACKWARD ;
1315                                         break ;
1316                                 default:
1317                                         psf->instrument->loops [j].mode = SF_LOOP_NONE ;
1318                                         break ;
1319                                 } ;
1320                         } ;
1321
1322                 loop_count -- ;
1323                 } ;
1324
1325         if (chunklen - bytesread == 0)
1326         {       if (sampler_data != 0)
1327                         psf_log_printf (psf, "  Sampler Data : %u (should be 0)\n", sampler_data) ;
1328                 else
1329                         psf_log_printf (psf, "  Sampler Data : %u\n", sampler_data) ;
1330                 }
1331         else
1332         {       if (sampler_data != chunklen - bytesread)
1333                 {       psf_log_printf (psf, "  Sampler Data : %u (should have been %u)\n", sampler_data, chunklen - bytesread) ;
1334                         sampler_data = chunklen - bytesread ;
1335                         }
1336                 else
1337                         psf_log_printf (psf, "  Sampler Data : %u\n", sampler_data) ;
1338
1339                 psf_log_printf (psf, "      ") ;
1340                 for (k = 0 ; k < (int) sampler_data ; k++)
1341                 {       char ch ;
1342
1343                         if (k > 0 && (k % 20) == 0)
1344                                 psf_log_printf (psf, "\n      ") ;
1345
1346                         if ((thisread = psf_binheader_readf (psf, "1", &ch)) == 0)
1347                                 break ;
1348                         bytesread += thisread ;
1349                         psf_log_printf (psf, "%02X ", ch & 0xFF) ;
1350                         } ;
1351
1352                 psf_log_printf (psf, "\n") ;
1353                 } ;
1354
1355         psf->instrument->basenote = note ;
1356         psf->instrument->detune = (int8_t)(pitch / (0x40000000 / 25.0) + 0.5) ;
1357         psf->instrument->gain = 1 ;
1358         psf->instrument->velocity_lo = psf->instrument->key_lo = 0 ;
1359         psf->instrument->velocity_hi = psf->instrument->key_hi = 127 ;
1360
1361         return 0 ;
1362 } /* wav_read_smpl_chunk */
1363
1364 /*
1365 ** The acid chunk goes a little something like this:
1366 **
1367 ** 4 bytes          'acid'
1368 ** 4 bytes (int)     length of chunk starting at next byte
1369 **
1370 ** 4 bytes (int)     type of file:
1371 **        this appears to be a bit mask,however some combinations
1372 **        are probably impossible and/or qualified as "errors"
1373 **
1374 **        0x01 On: One Shot         Off: Loop
1375 **        0x02 On: Root note is Set Off: No root
1376 **        0x04 On: Stretch is On,   Off: Strech is OFF
1377 **        0x08 On: Disk Based       Off: Ram based
1378 **        0x10 On: ??????????       Off: ????????? (Acidizer puts that ON)
1379 **
1380 ** 2 bytes (short)      root note
1381 **        if type 0x10 is OFF : [C,C#,(...),B] -> [0x30 to 0x3B]
1382 **        if type 0x10 is ON  : [C,C#,(...),B] -> [0x3C to 0x47]
1383 **         (both types fit on same MIDI pitch albeit different octaves, so who cares)
1384 **
1385 ** 2 bytes (short)      ??? always set to 0x8000
1386 ** 4 bytes (float)      ??? seems to be always 0
1387 ** 4 bytes (int)        number of beats
1388 ** 2 bytes (short)      meter denominator   //always 4 in SF/ACID
1389 ** 2 bytes (short)      meter numerator     //always 4 in SF/ACID
1390 **                      //are we sure about the order?? usually its num/denom
1391 ** 4 bytes (float)      tempo
1392 **
1393 */
1394
1395 static int
1396 wav_read_acid_chunk (SF_PRIVATE *psf, uint32_t chunklen)
1397 {       char buffer [512] ;
1398         uint32_t bytesread = 0 ;
1399         int     beats, flags ;
1400         short rootnote, q1, meter_denom, meter_numer ;
1401         float q2, tempo ;
1402
1403         chunklen += (chunklen & 1) ;
1404
1405         bytesread += psf_binheader_readf (psf, "422f", &flags, &rootnote, &q1, &q2) ;
1406
1407         snprintf (buffer, sizeof (buffer), "%f", q2) ;
1408
1409         psf_log_printf (psf, "  Flags     : 0x%04x (%s,%s,%s,%s,%s)\n", flags,
1410                         (flags & 0x01) ? "OneShot" : "Loop",
1411                         (flags & 0x02) ? "RootNoteValid" : "RootNoteInvalid",
1412                         (flags & 0x04) ? "StretchOn" : "StretchOff",
1413                         (flags & 0x08) ? "DiskBased" : "RAMBased",
1414                         (flags & 0x10) ? "??On" : "??Off") ;
1415
1416         psf_log_printf (psf, "  Root note : 0x%x\n  ????      : 0x%04x\n  ????      : %s\n",
1417                                 rootnote, q1, buffer) ;
1418
1419         bytesread += psf_binheader_readf (psf, "422f", &beats, &meter_denom, &meter_numer, &tempo) ;
1420         snprintf (buffer, sizeof (buffer), "%f", tempo) ;
1421         psf_log_printf (psf, "  Beats     : %d\n  Meter     : %d/%d\n  Tempo     : %s\n",
1422                                 beats, meter_numer, meter_denom, buffer) ;
1423
1424         psf_binheader_readf (psf, "j", chunklen - bytesread) ;
1425
1426         if ((psf->loop_info = calloc (1, sizeof (SF_LOOP_INFO))) == NULL)
1427                 return SFE_MALLOC_FAILED ;
1428
1429         psf->loop_info->time_sig_num    = meter_numer ;
1430         psf->loop_info->time_sig_den    = meter_denom ;
1431         psf->loop_info->loop_mode               = (flags & 0x01) ? SF_LOOP_NONE : SF_LOOP_FORWARD ;
1432         psf->loop_info->num_beats               = beats ;
1433         psf->loop_info->bpm                             = tempo ;
1434         psf->loop_info->root_key                = (flags & 0x02) ? rootnote : -1 ;
1435
1436         return 0 ;
1437 } /* wav_read_acid_chunk */
1438
1439 /*==============================================================================
1440 */
1441
1442 static int
1443 wav_set_chunk (SF_PRIVATE *psf, const SF_CHUNK_INFO * chunk_info)
1444 {       return psf_save_write_chunk (&psf->wchunks, chunk_info) ;
1445 } /* wav_set_chunk */
1446
1447 static SF_CHUNK_ITERATOR *
1448 wav_next_chunk_iterator (SF_PRIVATE *psf, SF_CHUNK_ITERATOR * iterator)
1449 {       return psf_next_chunk_iterator (&psf->rchunks, iterator) ;
1450 } /* wav_next_chunk_iterator */
1451
1452 static int
1453 wav_get_chunk_size (SF_PRIVATE *psf, const SF_CHUNK_ITERATOR * iterator, SF_CHUNK_INFO * chunk_info)
1454 {       int indx ;
1455
1456         if ((indx = psf_find_read_chunk_iterator (&psf->rchunks, iterator)) < 0)
1457                 return SFE_UNKNOWN_CHUNK ;
1458
1459         chunk_info->datalen = psf->rchunks.chunks [indx].len ;
1460
1461         return SFE_NO_ERROR ;
1462 } /* wav_get_chunk_size */
1463
1464 static int
1465 wav_get_chunk_data (SF_PRIVATE *psf, const SF_CHUNK_ITERATOR * iterator, SF_CHUNK_INFO * chunk_info)
1466 {       int indx ;
1467         sf_count_t pos ;
1468
1469         if ((indx = psf_find_read_chunk_iterator (&psf->rchunks, iterator)) < 0)
1470                 return SFE_UNKNOWN_CHUNK ;
1471
1472         if (chunk_info->data == NULL)
1473                 return SFE_BAD_CHUNK_DATA_PTR ;
1474
1475         chunk_info->id_size = psf->rchunks.chunks [indx].id_size ;
1476         memcpy (chunk_info->id, psf->rchunks.chunks [indx].id, sizeof (chunk_info->id) / sizeof (*chunk_info->id)) ;
1477
1478         pos = psf_ftell (psf) ;
1479         psf_fseek (psf, psf->rchunks.chunks [indx].offset, SEEK_SET) ;
1480         psf_fread (chunk_info->data, SF_MIN (chunk_info->datalen, psf->rchunks.chunks [indx].len), 1, psf) ;
1481         psf_fseek (psf, pos, SEEK_SET) ;
1482
1483         return SFE_NO_ERROR ;
1484 } /* wav_get_chunk_data */