Alexandre Lision | 7c6f4a6 | 2013-09-05 13:27:01 -0400 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright (C) 1999-2011 Erik de Castro Lopo <erikd@mega-nerd.com> |
| 3 | ** |
| 4 | ** This program is free software; you can redistribute it and/or modify |
| 5 | ** it under the terms of the GNU Lesser General Public License as published by |
| 6 | ** the Free Software Foundation; either version 2.1 of the License, or |
| 7 | ** (at your option) any later version. |
| 8 | ** |
| 9 | ** This program is distributed in the hope that it will be useful, |
| 10 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | ** GNU Lesser General Public License for more details. |
| 13 | ** |
| 14 | ** You should have received a copy of the GNU Lesser General Public License |
| 15 | ** along with this program; if not, write to the Free Software |
| 16 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #include "sfconfig.h" |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <fcntl.h> |
| 24 | #include <string.h> |
| 25 | #include <ctype.h> |
| 26 | #include <math.h> |
| 27 | |
| 28 | #include "sndfile.h" |
| 29 | #include "sfendian.h" |
| 30 | #include "common.h" |
| 31 | |
| 32 | /*------------------------------------------------------------------------------ |
| 33 | ** Macros to handle big/little endian issues. |
| 34 | */ |
| 35 | |
| 36 | #define FAP_MARKER (MAKE_MARKER ('f', 'a', 'p', ' ')) |
| 37 | #define PAF_MARKER (MAKE_MARKER (' ', 'p', 'a', 'f')) |
| 38 | |
| 39 | /*------------------------------------------------------------------------------ |
| 40 | ** Other defines. |
| 41 | */ |
| 42 | |
| 43 | #define PAF_HEADER_LENGTH 2048 |
| 44 | |
| 45 | #define PAF24_SAMPLES_PER_BLOCK 10 |
| 46 | #define PAF24_BLOCK_SIZE 32 |
| 47 | |
| 48 | /*------------------------------------------------------------------------------ |
| 49 | ** Typedefs. |
| 50 | */ |
| 51 | |
| 52 | typedef struct |
| 53 | { int version ; |
| 54 | int endianness ; |
| 55 | int samplerate ; |
| 56 | int format ; |
| 57 | int channels ; |
| 58 | int source ; |
| 59 | } PAF_FMT ; |
| 60 | |
| 61 | typedef struct |
| 62 | { int max_blocks, channels, samplesperblock, blocksize ; |
| 63 | int read_block, write_block, read_count, write_count ; |
| 64 | sf_count_t sample_count ; |
| 65 | int *samples ; |
| 66 | unsigned char *block ; |
| 67 | #if HAVE_FLEXIBLE_ARRAY |
| 68 | int data [] ; /* ISO C99 struct flexible array. */ |
| 69 | #else |
| 70 | int data [1] ; /* This is a hack and may not work. */ |
| 71 | #endif |
| 72 | } PAF24_PRIVATE ; |
| 73 | |
| 74 | /*------------------------------------------------------------------------------ |
| 75 | ** Private static functions. |
| 76 | */ |
| 77 | |
| 78 | static int paf24_init (SF_PRIVATE *psf) ; |
| 79 | |
| 80 | static int paf_read_header (SF_PRIVATE *psf) ; |
| 81 | static int paf_write_header (SF_PRIVATE *psf, int calc_length) ; |
| 82 | |
| 83 | static sf_count_t paf24_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; |
| 84 | static sf_count_t paf24_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; |
| 85 | static sf_count_t paf24_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; |
| 86 | static sf_count_t paf24_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; |
| 87 | |
| 88 | static sf_count_t paf24_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; |
| 89 | static sf_count_t paf24_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; |
| 90 | static sf_count_t paf24_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; |
| 91 | static sf_count_t paf24_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; |
| 92 | |
| 93 | static sf_count_t paf24_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ; |
| 94 | |
| 95 | enum |
| 96 | { PAF_PCM_16 = 0, |
| 97 | PAF_PCM_24 = 1, |
| 98 | PAF_PCM_S8 = 2 |
| 99 | } ; |
| 100 | |
| 101 | /*------------------------------------------------------------------------------ |
| 102 | ** Public function. |
| 103 | */ |
| 104 | |
| 105 | int |
| 106 | paf_open (SF_PRIVATE *psf) |
| 107 | { int subformat, error, endian ; |
| 108 | |
| 109 | psf->dataoffset = PAF_HEADER_LENGTH ; |
| 110 | |
| 111 | if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) |
| 112 | { if ((error = paf_read_header (psf))) |
| 113 | return error ; |
| 114 | } ; |
| 115 | |
| 116 | subformat = SF_CODEC (psf->sf.format) ; |
| 117 | |
| 118 | if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) |
| 119 | { if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_PAF) |
| 120 | return SFE_BAD_OPEN_FORMAT ; |
| 121 | |
| 122 | endian = SF_ENDIAN (psf->sf.format) ; |
| 123 | |
| 124 | /* PAF is by default big endian. */ |
| 125 | psf->endian = SF_ENDIAN_BIG ; |
| 126 | |
| 127 | if (endian == SF_ENDIAN_LITTLE || (CPU_IS_LITTLE_ENDIAN && (endian == SF_ENDIAN_CPU))) |
| 128 | psf->endian = SF_ENDIAN_LITTLE ; |
| 129 | |
| 130 | if ((error = paf_write_header (psf, SF_FALSE))) |
| 131 | return error ; |
| 132 | |
| 133 | psf->write_header = paf_write_header ; |
| 134 | } ; |
| 135 | |
| 136 | switch (subformat) |
| 137 | { case SF_FORMAT_PCM_S8 : |
| 138 | psf->bytewidth = 1 ; |
| 139 | error = pcm_init (psf) ; |
| 140 | break ; |
| 141 | |
| 142 | case SF_FORMAT_PCM_16 : |
| 143 | psf->bytewidth = 2 ; |
| 144 | error = pcm_init (psf) ; |
| 145 | break ; |
| 146 | |
| 147 | case SF_FORMAT_PCM_24 : |
| 148 | /* No bytewidth because of whacky 24 bit encoding. */ |
| 149 | error = paf24_init (psf) ; |
| 150 | break ; |
| 151 | |
| 152 | default : return SFE_PAF_UNKNOWN_FORMAT ; |
| 153 | } ; |
| 154 | |
| 155 | return error ; |
| 156 | } /* paf_open */ |
| 157 | |
| 158 | /*------------------------------------------------------------------------------ |
| 159 | */ |
| 160 | |
| 161 | static int |
| 162 | paf_read_header (SF_PRIVATE *psf) |
| 163 | { PAF_FMT paf_fmt ; |
| 164 | int marker ; |
| 165 | |
| 166 | if (psf->filelength < PAF_HEADER_LENGTH) |
| 167 | return SFE_PAF_SHORT_HEADER ; |
| 168 | |
| 169 | memset (&paf_fmt, 0, sizeof (paf_fmt)) ; |
| 170 | psf_binheader_readf (psf, "pm", 0, &marker) ; |
| 171 | |
| 172 | psf_log_printf (psf, "Signature : '%M'\n", marker) ; |
| 173 | |
| 174 | if (marker == PAF_MARKER) |
| 175 | { psf_binheader_readf (psf, "E444444", &(paf_fmt.version), &(paf_fmt.endianness), |
| 176 | &(paf_fmt.samplerate), &(paf_fmt.format), &(paf_fmt.channels), &(paf_fmt.source)) ; |
| 177 | } |
| 178 | else if (marker == FAP_MARKER) |
| 179 | { psf_binheader_readf (psf, "e444444", &(paf_fmt.version), &(paf_fmt.endianness), |
| 180 | &(paf_fmt.samplerate), &(paf_fmt.format), &(paf_fmt.channels), &(paf_fmt.source)) ; |
| 181 | } |
| 182 | else |
| 183 | return SFE_PAF_NO_MARKER ; |
| 184 | |
| 185 | psf_log_printf (psf, "Version : %d\n", paf_fmt.version) ; |
| 186 | |
| 187 | if (paf_fmt.version != 0) |
| 188 | { psf_log_printf (psf, "*** Bad version number. should be zero.\n") ; |
| 189 | return SFE_PAF_VERSION ; |
| 190 | } ; |
| 191 | |
| 192 | psf_log_printf (psf, "Sample Rate : %d\n", paf_fmt.samplerate) ; |
| 193 | psf_log_printf (psf, "Channels : %d\n", paf_fmt.channels) ; |
| 194 | |
| 195 | psf_log_printf (psf, "Endianness : %d => ", paf_fmt.endianness) ; |
| 196 | if (paf_fmt.endianness) |
| 197 | { psf_log_printf (psf, "Little\n", paf_fmt.endianness) ; |
| 198 | psf->endian = SF_ENDIAN_LITTLE ; |
| 199 | } |
| 200 | else |
| 201 | { psf_log_printf (psf, "Big\n", paf_fmt.endianness) ; |
| 202 | psf->endian = SF_ENDIAN_BIG ; |
| 203 | } ; |
| 204 | |
| 205 | if (paf_fmt.channels > SF_MAX_CHANNELS) |
| 206 | return SFE_PAF_BAD_CHANNELS ; |
| 207 | |
| 208 | psf->datalength = psf->filelength - psf->dataoffset ; |
| 209 | |
| 210 | psf_binheader_readf (psf, "p", (int) psf->dataoffset) ; |
| 211 | |
| 212 | psf->sf.samplerate = paf_fmt.samplerate ; |
| 213 | psf->sf.channels = paf_fmt.channels ; |
| 214 | |
| 215 | /* Only fill in type major. */ |
| 216 | psf->sf.format = SF_FORMAT_PAF ; |
| 217 | |
| 218 | psf_log_printf (psf, "Format : %d => ", paf_fmt.format) ; |
| 219 | |
| 220 | /* PAF is by default big endian. */ |
| 221 | psf->sf.format |= paf_fmt.endianness ? SF_ENDIAN_LITTLE : SF_ENDIAN_BIG ; |
| 222 | |
| 223 | switch (paf_fmt.format) |
| 224 | { case PAF_PCM_S8 : |
| 225 | psf_log_printf (psf, "8 bit linear PCM\n") ; |
| 226 | psf->bytewidth = 1 ; |
| 227 | |
| 228 | psf->sf.format |= SF_FORMAT_PCM_S8 ; |
| 229 | |
| 230 | psf->blockwidth = psf->bytewidth * psf->sf.channels ; |
| 231 | psf->sf.frames = psf->datalength / psf->blockwidth ; |
| 232 | break ; |
| 233 | |
| 234 | case PAF_PCM_16 : |
| 235 | psf_log_printf (psf, "16 bit linear PCM\n") ; |
| 236 | psf->bytewidth = 2 ; |
| 237 | |
| 238 | psf->sf.format |= SF_FORMAT_PCM_16 ; |
| 239 | |
| 240 | psf->blockwidth = psf->bytewidth * psf->sf.channels ; |
| 241 | psf->sf.frames = psf->datalength / psf->blockwidth ; |
| 242 | break ; |
| 243 | |
| 244 | case PAF_PCM_24 : |
| 245 | psf_log_printf (psf, "24 bit linear PCM\n") ; |
| 246 | psf->bytewidth = 3 ; |
| 247 | |
| 248 | psf->sf.format |= SF_FORMAT_PCM_24 ; |
| 249 | |
| 250 | psf->blockwidth = 0 ; |
| 251 | psf->sf.frames = PAF24_SAMPLES_PER_BLOCK * psf->datalength / |
| 252 | (PAF24_BLOCK_SIZE * psf->sf.channels) ; |
| 253 | break ; |
| 254 | |
| 255 | default : psf_log_printf (psf, "Unknown\n") ; |
| 256 | return SFE_PAF_UNKNOWN_FORMAT ; |
| 257 | break ; |
| 258 | } ; |
| 259 | |
| 260 | psf_log_printf (psf, "Source : %d => ", paf_fmt.source) ; |
| 261 | |
| 262 | switch (paf_fmt.source) |
| 263 | { case 1 : psf_log_printf (psf, "Analog Recording\n") ; |
| 264 | break ; |
| 265 | case 2 : psf_log_printf (psf, "Digital Transfer\n") ; |
| 266 | break ; |
| 267 | case 3 : psf_log_printf (psf, "Multi-track Mixdown\n") ; |
| 268 | break ; |
| 269 | case 5 : psf_log_printf (psf, "Audio Resulting From DSP Processing\n") ; |
| 270 | break ; |
| 271 | default : psf_log_printf (psf, "Unknown\n") ; |
| 272 | break ; |
| 273 | } ; |
| 274 | |
| 275 | return 0 ; |
| 276 | } /* paf_read_header */ |
| 277 | |
| 278 | static int |
| 279 | paf_write_header (SF_PRIVATE *psf, int UNUSED (calc_length)) |
| 280 | { int paf_format ; |
| 281 | |
| 282 | /* PAF header already written so no need to re-write. */ |
| 283 | if (psf_ftell (psf) >= PAF_HEADER_LENGTH) |
| 284 | return 0 ; |
| 285 | |
| 286 | psf->dataoffset = PAF_HEADER_LENGTH ; |
| 287 | |
| 288 | switch (SF_CODEC (psf->sf.format)) |
| 289 | { case SF_FORMAT_PCM_S8 : |
| 290 | paf_format = PAF_PCM_S8 ; |
| 291 | break ; |
| 292 | |
| 293 | case SF_FORMAT_PCM_16 : |
| 294 | paf_format = PAF_PCM_16 ; |
| 295 | break ; |
| 296 | |
| 297 | case SF_FORMAT_PCM_24 : |
| 298 | paf_format = PAF_PCM_24 ; |
| 299 | break ; |
| 300 | |
| 301 | default : return SFE_PAF_UNKNOWN_FORMAT ; |
| 302 | } ; |
| 303 | |
| 304 | /* Reset the current header length to zero. */ |
| 305 | psf->header [0] = 0 ; |
| 306 | psf->headindex = 0 ; |
| 307 | |
| 308 | if (psf->endian == SF_ENDIAN_BIG) |
| 309 | { /* Marker, version, endianness, samplerate */ |
| 310 | psf_binheader_writef (psf, "Em444", PAF_MARKER, 0, 0, psf->sf.samplerate) ; |
| 311 | /* format, channels, source */ |
| 312 | psf_binheader_writef (psf, "E444", paf_format, psf->sf.channels, 0) ; |
| 313 | } |
| 314 | else if (psf->endian == SF_ENDIAN_LITTLE) |
| 315 | { /* Marker, version, endianness, samplerate */ |
| 316 | psf_binheader_writef (psf, "em444", FAP_MARKER, 0, 1, psf->sf.samplerate) ; |
| 317 | /* format, channels, source */ |
| 318 | psf_binheader_writef (psf, "e444", paf_format, psf->sf.channels, 0) ; |
| 319 | } ; |
| 320 | |
| 321 | /* Zero fill to dataoffset. */ |
| 322 | psf_binheader_writef (psf, "z", (size_t) (psf->dataoffset - psf->headindex)) ; |
| 323 | |
| 324 | psf_fwrite (psf->header, psf->headindex, 1, psf) ; |
| 325 | |
| 326 | return psf->error ; |
| 327 | } /* paf_write_header */ |
| 328 | |
| 329 | /*=============================================================================== |
| 330 | ** 24 bit PAF files have a really weird encoding. |
| 331 | ** For a mono file, 10 samples (each being 3 bytes) are packed into a 32 byte |
| 332 | ** block. The 8 ints in this 32 byte block are then endian swapped (as ints) |
| 333 | ** if necessary before being written to disk. |
| 334 | ** For a stereo file, blocks of 10 samples from the same channel are encoded |
| 335 | ** into 32 bytes as for the mono case. The 32 byte blocks are then interleaved |
| 336 | ** on disk. |
| 337 | ** Reading has to reverse the above process :-). |
| 338 | ** Weird!!! |
| 339 | ** |
| 340 | ** The code below attempts to gain efficiency while maintaining readability. |
| 341 | */ |
| 342 | |
| 343 | static int paf24_read_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) ; |
| 344 | static int paf24_write_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) ; |
| 345 | static int paf24_close (SF_PRIVATE *psf) ; |
| 346 | |
| 347 | |
| 348 | static int |
| 349 | paf24_init (SF_PRIVATE *psf) |
| 350 | { PAF24_PRIVATE *ppaf24 ; |
| 351 | int paf24size ; |
| 352 | |
| 353 | paf24size = sizeof (PAF24_PRIVATE) + psf->sf.channels * |
| 354 | (PAF24_BLOCK_SIZE + PAF24_SAMPLES_PER_BLOCK * sizeof (int)) ; |
| 355 | |
| 356 | /* |
| 357 | ** Not exatly sure why this needs to be here but the tests |
| 358 | ** fail without it. |
| 359 | */ |
| 360 | psf->last_op = 0 ; |
| 361 | |
| 362 | if (! (psf->codec_data = calloc (1, paf24size))) |
| 363 | return SFE_MALLOC_FAILED ; |
| 364 | |
| 365 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 366 | |
| 367 | ppaf24->channels = psf->sf.channels ; |
| 368 | ppaf24->samples = ppaf24->data ; |
| 369 | ppaf24->block = (unsigned char*) (ppaf24->data + PAF24_SAMPLES_PER_BLOCK * ppaf24->channels) ; |
| 370 | |
| 371 | ppaf24->blocksize = PAF24_BLOCK_SIZE * ppaf24->channels ; |
| 372 | ppaf24->samplesperblock = PAF24_SAMPLES_PER_BLOCK ; |
| 373 | |
| 374 | if (psf->file.mode == SFM_READ || psf->file.mode == SFM_RDWR) |
| 375 | { paf24_read_block (psf, ppaf24) ; /* Read first block. */ |
| 376 | |
| 377 | psf->read_short = paf24_read_s ; |
| 378 | psf->read_int = paf24_read_i ; |
| 379 | psf->read_float = paf24_read_f ; |
| 380 | psf->read_double = paf24_read_d ; |
| 381 | } ; |
| 382 | |
| 383 | if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) |
| 384 | { psf->write_short = paf24_write_s ; |
| 385 | psf->write_int = paf24_write_i ; |
| 386 | psf->write_float = paf24_write_f ; |
| 387 | psf->write_double = paf24_write_d ; |
| 388 | } ; |
| 389 | |
| 390 | psf->seek = paf24_seek ; |
| 391 | psf->container_close = paf24_close ; |
| 392 | |
| 393 | psf->filelength = psf_get_filelen (psf) ; |
| 394 | psf->datalength = psf->filelength - psf->dataoffset ; |
| 395 | |
| 396 | if (psf->datalength % PAF24_BLOCK_SIZE) |
| 397 | { if (psf->file.mode == SFM_READ) |
| 398 | psf_log_printf (psf, "*** Warning : file seems to be truncated.\n") ; |
| 399 | ppaf24->max_blocks = psf->datalength / ppaf24->blocksize + 1 ; |
| 400 | } |
| 401 | else |
| 402 | ppaf24->max_blocks = psf->datalength / ppaf24->blocksize ; |
| 403 | |
| 404 | ppaf24->read_block = 0 ; |
| 405 | if (psf->file.mode == SFM_RDWR) |
| 406 | ppaf24->write_block = ppaf24->max_blocks ; |
| 407 | else |
| 408 | ppaf24->write_block = 0 ; |
| 409 | |
| 410 | psf->sf.frames = ppaf24->samplesperblock * ppaf24->max_blocks ; |
| 411 | ppaf24->sample_count = psf->sf.frames ; |
| 412 | |
| 413 | return 0 ; |
| 414 | } /* paf24_init */ |
| 415 | |
| 416 | static sf_count_t |
| 417 | paf24_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) |
| 418 | { PAF24_PRIVATE *ppaf24 ; |
| 419 | int newblock, newsample ; |
| 420 | |
| 421 | if (psf->codec_data == NULL) |
| 422 | { psf->error = SFE_INTERNAL ; |
| 423 | return PSF_SEEK_ERROR ; |
| 424 | } ; |
| 425 | |
| 426 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 427 | |
| 428 | if (mode == SFM_READ && ppaf24->write_count > 0) |
| 429 | paf24_write_block (psf, ppaf24) ; |
| 430 | |
| 431 | newblock = offset / ppaf24->samplesperblock ; |
| 432 | newsample = offset % ppaf24->samplesperblock ; |
| 433 | |
| 434 | switch (mode) |
| 435 | { case SFM_READ : |
| 436 | if (psf->last_op == SFM_WRITE && ppaf24->write_count) |
| 437 | paf24_write_block (psf, ppaf24) ; |
| 438 | |
| 439 | psf_fseek (psf, psf->dataoffset + newblock * ppaf24->blocksize, SEEK_SET) ; |
| 440 | ppaf24->read_block = newblock ; |
| 441 | paf24_read_block (psf, ppaf24) ; |
| 442 | ppaf24->read_count = newsample ; |
| 443 | break ; |
| 444 | |
| 445 | case SFM_WRITE : |
| 446 | if (offset > ppaf24->sample_count) |
| 447 | { psf->error = SFE_BAD_SEEK ; |
| 448 | return PSF_SEEK_ERROR ; |
| 449 | } ; |
| 450 | |
| 451 | if (psf->last_op == SFM_WRITE && ppaf24->write_count) |
| 452 | paf24_write_block (psf, ppaf24) ; |
| 453 | |
| 454 | psf_fseek (psf, psf->dataoffset + newblock * ppaf24->blocksize, SEEK_SET) ; |
| 455 | ppaf24->write_block = newblock ; |
| 456 | paf24_read_block (psf, ppaf24) ; |
| 457 | ppaf24->write_count = newsample ; |
| 458 | break ; |
| 459 | |
| 460 | default : |
| 461 | psf->error = SFE_BAD_SEEK ; |
| 462 | return PSF_SEEK_ERROR ; |
| 463 | } ; |
| 464 | |
| 465 | return newblock * ppaf24->samplesperblock + newsample ; |
| 466 | } /* paf24_seek */ |
| 467 | |
| 468 | static int |
| 469 | paf24_close (SF_PRIVATE *psf) |
| 470 | { PAF24_PRIVATE *ppaf24 ; |
| 471 | |
| 472 | if (psf->codec_data == NULL) |
| 473 | return 0 ; |
| 474 | |
| 475 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 476 | |
| 477 | if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) |
| 478 | { if (ppaf24->write_count > 0) |
| 479 | paf24_write_block (psf, ppaf24) ; |
| 480 | } ; |
| 481 | |
| 482 | return 0 ; |
| 483 | } /* paf24_close */ |
| 484 | |
| 485 | /*--------------------------------------------------------------------------- |
| 486 | */ |
| 487 | static int |
| 488 | paf24_read_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) |
| 489 | { int k, channel ; |
| 490 | unsigned char *cptr ; |
| 491 | |
| 492 | ppaf24->read_block ++ ; |
| 493 | ppaf24->read_count = 0 ; |
| 494 | |
| 495 | if (ppaf24->read_block * ppaf24->samplesperblock > ppaf24->sample_count) |
| 496 | { memset (ppaf24->samples, 0, ppaf24->samplesperblock * ppaf24->channels) ; |
| 497 | return 1 ; |
| 498 | } ; |
| 499 | |
| 500 | /* Read the block. */ |
| 501 | if ((k = psf_fread (ppaf24->block, 1, ppaf24->blocksize, psf)) != ppaf24->blocksize) |
| 502 | psf_log_printf (psf, "*** Warning : short read (%d != %d).\n", k, ppaf24->blocksize) ; |
| 503 | |
| 504 | |
| 505 | if (CPU_IS_LITTLE_ENDIAN) |
| 506 | { /* Do endian swapping if necessary. */ |
| 507 | if (psf->endian == SF_ENDIAN_BIG) |
| 508 | endswap_int_array (ppaf24->data, 8 * ppaf24->channels) ; |
| 509 | |
| 510 | /* Unpack block. */ |
| 511 | for (k = 0 ; k < PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; k++) |
| 512 | { channel = k % ppaf24->channels ; |
| 513 | cptr = ppaf24->block + PAF24_BLOCK_SIZE * channel + 3 * (k / ppaf24->channels) ; |
| 514 | ppaf24->samples [k] = (cptr [0] << 8) | (cptr [1] << 16) | (cptr [2] << 24) ; |
| 515 | } ; |
| 516 | } |
| 517 | else |
| 518 | { /* Do endian swapping if necessary. */ |
| 519 | if (psf->endian == SF_ENDIAN_BIG) |
| 520 | endswap_int_array (ppaf24->data, 8 * ppaf24->channels) ; |
| 521 | |
| 522 | /* Unpack block. */ |
| 523 | for (k = 0 ; k < PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; k++) |
| 524 | { channel = k % ppaf24->channels ; |
| 525 | cptr = ppaf24->block + PAF24_BLOCK_SIZE * channel + 3 * (k / ppaf24->channels) ; |
| 526 | ppaf24->samples [k] = (cptr [0] << 8) | (cptr [1] << 16) | (cptr [2] << 24) ; |
| 527 | } ; |
| 528 | } ; |
| 529 | |
| 530 | return 1 ; |
| 531 | } /* paf24_read_block */ |
| 532 | |
| 533 | static int |
| 534 | paf24_read (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24, int *ptr, int len) |
| 535 | { int count, total = 0 ; |
| 536 | |
| 537 | while (total < len) |
| 538 | { if (ppaf24->read_block * ppaf24->samplesperblock >= ppaf24->sample_count) |
| 539 | { memset (&(ptr [total]), 0, (len - total) * sizeof (int)) ; |
| 540 | return total ; |
| 541 | } ; |
| 542 | |
| 543 | if (ppaf24->read_count >= ppaf24->samplesperblock) |
| 544 | paf24_read_block (psf, ppaf24) ; |
| 545 | |
| 546 | count = (ppaf24->samplesperblock - ppaf24->read_count) * ppaf24->channels ; |
| 547 | count = (len - total > count) ? count : len - total ; |
| 548 | |
| 549 | memcpy (&(ptr [total]), &(ppaf24->samples [ppaf24->read_count * ppaf24->channels]), count * sizeof (int)) ; |
| 550 | total += count ; |
| 551 | ppaf24->read_count += count / ppaf24->channels ; |
| 552 | } ; |
| 553 | |
| 554 | return total ; |
| 555 | } /* paf24_read */ |
| 556 | |
| 557 | static sf_count_t |
| 558 | paf24_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) |
| 559 | { PAF24_PRIVATE *ppaf24 ; |
| 560 | int *iptr ; |
| 561 | int k, bufferlen, readcount, count ; |
| 562 | sf_count_t total = 0 ; |
| 563 | |
| 564 | if (psf->codec_data == NULL) |
| 565 | return 0 ; |
| 566 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 567 | |
| 568 | iptr = psf->u.ibuf ; |
| 569 | bufferlen = ARRAY_LEN (psf->u.ibuf) ; |
| 570 | while (len > 0) |
| 571 | { readcount = (len >= bufferlen) ? bufferlen : len ; |
| 572 | count = paf24_read (psf, ppaf24, iptr, readcount) ; |
| 573 | for (k = 0 ; k < readcount ; k++) |
| 574 | ptr [total + k] = iptr [k] >> 16 ; |
| 575 | total += count ; |
| 576 | len -= readcount ; |
| 577 | } ; |
| 578 | return total ; |
| 579 | } /* paf24_read_s */ |
| 580 | |
| 581 | static sf_count_t |
| 582 | paf24_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) |
| 583 | { PAF24_PRIVATE *ppaf24 ; |
| 584 | int total ; |
| 585 | |
| 586 | if (psf->codec_data == NULL) |
| 587 | return 0 ; |
| 588 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 589 | |
| 590 | total = paf24_read (psf, ppaf24, ptr, len) ; |
| 591 | |
| 592 | return total ; |
| 593 | } /* paf24_read_i */ |
| 594 | |
| 595 | static sf_count_t |
| 596 | paf24_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) |
| 597 | { PAF24_PRIVATE *ppaf24 ; |
| 598 | int *iptr ; |
| 599 | int k, bufferlen, readcount, count ; |
| 600 | sf_count_t total = 0 ; |
| 601 | float normfact ; |
| 602 | |
| 603 | if (psf->codec_data == NULL) |
| 604 | return 0 ; |
| 605 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 606 | |
| 607 | normfact = (psf->norm_float == SF_TRUE) ? (1.0 / 0x80000000) : (1.0 / 0x100) ; |
| 608 | |
| 609 | iptr = psf->u.ibuf ; |
| 610 | bufferlen = ARRAY_LEN (psf->u.ibuf) ; |
| 611 | while (len > 0) |
| 612 | { readcount = (len >= bufferlen) ? bufferlen : len ; |
| 613 | count = paf24_read (psf, ppaf24, iptr, readcount) ; |
| 614 | for (k = 0 ; k < readcount ; k++) |
| 615 | ptr [total + k] = normfact * iptr [k] ; |
| 616 | total += count ; |
| 617 | len -= readcount ; |
| 618 | } ; |
| 619 | return total ; |
| 620 | } /* paf24_read_f */ |
| 621 | |
| 622 | static sf_count_t |
| 623 | paf24_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) |
| 624 | { PAF24_PRIVATE *ppaf24 ; |
| 625 | int *iptr ; |
| 626 | int k, bufferlen, readcount, count ; |
| 627 | sf_count_t total = 0 ; |
| 628 | double normfact ; |
| 629 | |
| 630 | if (psf->codec_data == NULL) |
| 631 | return 0 ; |
| 632 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 633 | |
| 634 | normfact = (psf->norm_double == SF_TRUE) ? (1.0 / 0x80000000) : (1.0 / 0x100) ; |
| 635 | |
| 636 | iptr = psf->u.ibuf ; |
| 637 | bufferlen = ARRAY_LEN (psf->u.ibuf) ; |
| 638 | while (len > 0) |
| 639 | { readcount = (len >= bufferlen) ? bufferlen : len ; |
| 640 | count = paf24_read (psf, ppaf24, iptr, readcount) ; |
| 641 | for (k = 0 ; k < readcount ; k++) |
| 642 | ptr [total + k] = normfact * iptr [k] ; |
| 643 | total += count ; |
| 644 | len -= readcount ; |
| 645 | } ; |
| 646 | return total ; |
| 647 | } /* paf24_read_d */ |
| 648 | |
| 649 | /*--------------------------------------------------------------------------- |
| 650 | */ |
| 651 | |
| 652 | static int |
| 653 | paf24_write_block (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24) |
| 654 | { int k, nextsample, channel ; |
| 655 | unsigned char *cptr ; |
| 656 | |
| 657 | /* First pack block. */ |
| 658 | |
| 659 | if (CPU_IS_LITTLE_ENDIAN) |
| 660 | { for (k = 0 ; k < PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; k++) |
| 661 | { channel = k % ppaf24->channels ; |
| 662 | cptr = ppaf24->block + PAF24_BLOCK_SIZE * channel + 3 * (k / ppaf24->channels) ; |
| 663 | nextsample = ppaf24->samples [k] >> 8 ; |
| 664 | cptr [0] = nextsample ; |
| 665 | cptr [1] = nextsample >> 8 ; |
| 666 | cptr [2] = nextsample >> 16 ; |
| 667 | } ; |
| 668 | |
| 669 | /* Do endian swapping if necessary. */ |
| 670 | if (psf->endian == SF_ENDIAN_BIG) |
| 671 | endswap_int_array (ppaf24->data, 8 * ppaf24->channels) ; |
| 672 | } |
| 673 | else if (CPU_IS_BIG_ENDIAN) |
| 674 | { /* This is correct. */ |
| 675 | for (k = 0 ; k < PAF24_SAMPLES_PER_BLOCK * ppaf24->channels ; k++) |
| 676 | { channel = k % ppaf24->channels ; |
| 677 | cptr = ppaf24->block + PAF24_BLOCK_SIZE * channel + 3 * (k / ppaf24->channels) ; |
| 678 | nextsample = ppaf24->samples [k] >> 8 ; |
| 679 | cptr [0] = nextsample ; |
| 680 | cptr [1] = nextsample >> 8 ; |
| 681 | cptr [2] = nextsample >> 16 ; |
| 682 | } ; |
| 683 | if (psf->endian == SF_ENDIAN_BIG) |
| 684 | endswap_int_array (ppaf24->data, 8 * ppaf24->channels) ; |
| 685 | } ; |
| 686 | |
| 687 | /* Write block to disk. */ |
| 688 | if ((k = psf_fwrite (ppaf24->block, 1, ppaf24->blocksize, psf)) != ppaf24->blocksize) |
| 689 | psf_log_printf (psf, "*** Warning : short write (%d != %d).\n", k, ppaf24->blocksize) ; |
| 690 | |
| 691 | if (ppaf24->sample_count < ppaf24->write_block * ppaf24->samplesperblock + ppaf24->write_count) |
| 692 | ppaf24->sample_count = ppaf24->write_block * ppaf24->samplesperblock + ppaf24->write_count ; |
| 693 | |
| 694 | if (ppaf24->write_count == ppaf24->samplesperblock) |
| 695 | { ppaf24->write_block ++ ; |
| 696 | ppaf24->write_count = 0 ; |
| 697 | } ; |
| 698 | |
| 699 | return 1 ; |
| 700 | } /* paf24_write_block */ |
| 701 | |
| 702 | static int |
| 703 | paf24_write (SF_PRIVATE *psf, PAF24_PRIVATE *ppaf24, const int *ptr, int len) |
| 704 | { int count, total = 0 ; |
| 705 | |
| 706 | while (total < len) |
| 707 | { count = (ppaf24->samplesperblock - ppaf24->write_count) * ppaf24->channels ; |
| 708 | |
| 709 | if (count > len - total) |
| 710 | count = len - total ; |
| 711 | |
| 712 | memcpy (&(ppaf24->samples [ppaf24->write_count * ppaf24->channels]), &(ptr [total]), count * sizeof (int)) ; |
| 713 | total += count ; |
| 714 | ppaf24->write_count += count / ppaf24->channels ; |
| 715 | |
| 716 | if (ppaf24->write_count >= ppaf24->samplesperblock) |
| 717 | paf24_write_block (psf, ppaf24) ; |
| 718 | } ; |
| 719 | |
| 720 | return total ; |
| 721 | } /* paf24_write */ |
| 722 | |
| 723 | static sf_count_t |
| 724 | paf24_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) |
| 725 | { PAF24_PRIVATE *ppaf24 ; |
| 726 | int *iptr ; |
| 727 | int k, bufferlen, writecount = 0, count ; |
| 728 | sf_count_t total = 0 ; |
| 729 | |
| 730 | if (psf->codec_data == NULL) |
| 731 | return 0 ; |
| 732 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 733 | |
| 734 | iptr = psf->u.ibuf ; |
| 735 | bufferlen = ARRAY_LEN (psf->u.ibuf) ; |
| 736 | while (len > 0) |
| 737 | { writecount = (len >= bufferlen) ? bufferlen : len ; |
| 738 | for (k = 0 ; k < writecount ; k++) |
| 739 | iptr [k] = ptr [total + k] << 16 ; |
| 740 | count = paf24_write (psf, ppaf24, iptr, writecount) ; |
| 741 | total += count ; |
| 742 | len -= writecount ; |
| 743 | if (count != writecount) |
| 744 | break ; |
| 745 | } ; |
| 746 | return total ; |
| 747 | } /* paf24_write_s */ |
| 748 | |
| 749 | static sf_count_t |
| 750 | paf24_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) |
| 751 | { PAF24_PRIVATE *ppaf24 ; |
| 752 | int writecount, count ; |
| 753 | sf_count_t total = 0 ; |
| 754 | |
| 755 | if (psf->codec_data == NULL) |
| 756 | return 0 ; |
| 757 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 758 | |
| 759 | while (len > 0) |
| 760 | { writecount = (len > 0x10000000) ? 0x10000000 : (int) len ; |
| 761 | |
| 762 | count = paf24_write (psf, ppaf24, ptr, writecount) ; |
| 763 | |
| 764 | total += count ; |
| 765 | len -= count ; |
| 766 | if (count != writecount) |
| 767 | break ; |
| 768 | } ; |
| 769 | |
| 770 | return total ; |
| 771 | } /* paf24_write_i */ |
| 772 | |
| 773 | static sf_count_t |
| 774 | paf24_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) |
| 775 | { PAF24_PRIVATE *ppaf24 ; |
| 776 | int *iptr ; |
| 777 | int k, bufferlen, writecount = 0, count ; |
| 778 | sf_count_t total = 0 ; |
| 779 | float normfact ; |
| 780 | |
| 781 | if (psf->codec_data == NULL) |
| 782 | return 0 ; |
| 783 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 784 | |
| 785 | normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7FFFFFFF) : (1.0 / 0x100) ; |
| 786 | |
| 787 | iptr = psf->u.ibuf ; |
| 788 | bufferlen = ARRAY_LEN (psf->u.ibuf) ; |
| 789 | while (len > 0) |
| 790 | { writecount = (len >= bufferlen) ? bufferlen : len ; |
| 791 | for (k = 0 ; k < writecount ; k++) |
| 792 | iptr [k] = lrintf (normfact * ptr [total + k]) ; |
| 793 | count = paf24_write (psf, ppaf24, iptr, writecount) ; |
| 794 | total += count ; |
| 795 | len -= writecount ; |
| 796 | if (count != writecount) |
| 797 | break ; |
| 798 | } ; |
| 799 | |
| 800 | return total ; |
| 801 | } /* paf24_write_f */ |
| 802 | |
| 803 | static sf_count_t |
| 804 | paf24_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) |
| 805 | { PAF24_PRIVATE *ppaf24 ; |
| 806 | int *iptr ; |
| 807 | int k, bufferlen, writecount = 0, count ; |
| 808 | sf_count_t total = 0 ; |
| 809 | double normfact ; |
| 810 | |
| 811 | if (psf->codec_data == NULL) |
| 812 | return 0 ; |
| 813 | ppaf24 = (PAF24_PRIVATE*) psf->codec_data ; |
| 814 | |
| 815 | normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x7FFFFFFF) : (1.0 / 0x100) ; |
| 816 | |
| 817 | iptr = psf->u.ibuf ; |
| 818 | bufferlen = ARRAY_LEN (psf->u.ibuf) ; |
| 819 | while (len > 0) |
| 820 | { writecount = (len >= bufferlen) ? bufferlen : len ; |
| 821 | for (k = 0 ; k < writecount ; k++) |
| 822 | iptr [k] = lrint (normfact * ptr [total+k]) ; |
| 823 | count = paf24_write (psf, ppaf24, iptr, writecount) ; |
| 824 | total += count ; |
| 825 | len -= writecount ; |
| 826 | if (count != writecount) |
| 827 | break ; |
| 828 | } ; |
| 829 | |
| 830 | return total ; |
| 831 | } /* paf24_write_d */ |
| 832 | |