2 ** Copyright (C) 2003-2006 Erik de Castro Lopo <erikd@mega-nerd.com>
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.
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.
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.
30 #include "float_cast.h"
32 #define MAX_XI_SAMPLES 16
34 /*------------------------------------------------------------------------------
35 ** Private static functions and tyepdefs.
39 { /* Warning, this filename is NOT nul terminated. */
42 char sample_name [22] ;
44 int loop_begin, loop_end ;
47 /* Data for encoder and decoder. */
51 static int xi_close (SF_PRIVATE *psf) ;
52 static int xi_write_header (SF_PRIVATE *psf, int calc_length) ;
53 static int xi_read_header (SF_PRIVATE *psf) ;
54 static int dpcm_init (SF_PRIVATE *psf) ;
57 static sf_count_t dpcm_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ;
59 /*------------------------------------------------------------------------------
64 xi_open (SF_PRIVATE *psf)
66 int subformat, error = 0 ;
69 return SFE_XI_NO_PIPE ;
73 else if ((pxi = calloc (1, sizeof (XI_PRIVATE))) == NULL)
74 return SFE_MALLOC_FAILED ;
78 if (psf->mode == SFM_READ || (psf->mode == SFM_RDWR && psf->filelength > 0))
79 { if ((error = xi_read_header (psf)))
83 subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
85 if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
86 { if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_XI)
87 return SFE_BAD_OPEN_FORMAT ;
89 psf->endian = SF_ENDIAN_LITTLE ;
90 psf->sf.channels = 1 ; /* Always mono */
91 psf->sf.samplerate = 44100 ; /* Always */
93 /* Set up default instrument and software name. */
94 memcpy (pxi->filename, "Default Name ", sizeof (pxi->filename)) ;
95 memcpy (pxi->software, PACKAGE "-" VERSION " ", sizeof (pxi->software)) ;
97 memset (pxi->sample_name, 0, sizeof (pxi->sample_name)) ;
98 LSF_SNPRINTF (pxi->sample_name, sizeof (pxi->sample_name), "%s", "Sample #1") ;
100 pxi->sample_flags = (subformat == SF_FORMAT_DPCM_16) ? 16 : 0 ;
102 if (xi_write_header (psf, SF_FALSE))
105 psf->write_header = xi_write_header ;
108 psf->container_close = xi_close ;
109 psf->seek = dpcm_seek ;
111 psf->sf.seekable = SF_FALSE ;
113 psf->blockwidth = psf->bytewidth * psf->sf.channels ;
116 { case SF_FORMAT_DPCM_8 : /* 8-bit differential PCM. */
117 case SF_FORMAT_DPCM_16 : /* 16-bit differential PCM. */
118 error = dpcm_init (psf) ;
127 /*------------------------------------------------------------------------------
131 xi_close (SF_PRIVATE *psf)
138 /*==============================================================================
141 static sf_count_t dpcm_read_dsc2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
142 static sf_count_t dpcm_read_dsc2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
143 static sf_count_t dpcm_read_dsc2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
144 static sf_count_t dpcm_read_dsc2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
146 static sf_count_t dpcm_write_s2dsc (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ;
147 static sf_count_t dpcm_write_i2dsc (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ;
148 static sf_count_t dpcm_write_f2dsc (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ;
149 static sf_count_t dpcm_write_d2dsc (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ;
151 static sf_count_t dpcm_read_dles2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
152 static sf_count_t dpcm_read_dles2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
153 static sf_count_t dpcm_read_dles2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
154 static sf_count_t dpcm_read_dles2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
156 static sf_count_t dpcm_write_s2dles (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ;
157 static sf_count_t dpcm_write_i2dles (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ;
158 static sf_count_t dpcm_write_f2dles (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ;
159 static sf_count_t dpcm_write_d2dles (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ;
162 dpcm_init (SF_PRIVATE *psf)
163 { if (psf->bytewidth == 0 || psf->sf.channels == 0)
164 return SFE_INTERNAL ;
166 psf->blockwidth = psf->bytewidth * psf->sf.channels ;
168 if (psf->mode == SFM_READ || psf->mode == SFM_RDWR)
169 { switch (psf->bytewidth)
171 psf->read_short = dpcm_read_dsc2s ;
172 psf->read_int = dpcm_read_dsc2i ;
173 psf->read_float = dpcm_read_dsc2f ;
174 psf->read_double = dpcm_read_dsc2d ;
177 psf->read_short = dpcm_read_dles2s ;
178 psf->read_int = dpcm_read_dles2i ;
179 psf->read_float = dpcm_read_dles2f ;
180 psf->read_double = dpcm_read_dles2d ;
183 psf_log_printf (psf, "dpcm_init() returning SFE_UNIMPLEMENTED\n") ;
184 return SFE_UNIMPLEMENTED ;
188 if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
189 { switch (psf->bytewidth)
191 psf->write_short = dpcm_write_s2dsc ;
192 psf->write_int = dpcm_write_i2dsc ;
193 psf->write_float = dpcm_write_f2dsc ;
194 psf->write_double = dpcm_write_d2dsc ;
197 psf->write_short = dpcm_write_s2dles ;
198 psf->write_int = dpcm_write_i2dles ;
199 psf->write_float = dpcm_write_f2dles ;
200 psf->write_double = dpcm_write_d2dles ;
203 psf_log_printf (psf, "dpcm_init() returning SFE_UNIMPLEMENTED\n") ;
204 return SFE_UNIMPLEMENTED ;
208 psf->filelength = psf_get_filelen (psf) ;
209 psf->datalength = (psf->dataend) ? psf->dataend - psf->dataoffset :
210 psf->filelength - psf->dataoffset ;
211 psf->sf.frames = psf->datalength / psf->blockwidth ;
216 /*==============================================================================
220 dpcm_seek (SF_PRIVATE *psf, int mode, sf_count_t offset)
222 int total, bufferlen, len ;
224 if ((pxi = psf->fdata) == NULL)
225 return SFE_INTERNAL ;
227 if (psf->datalength < 0 || psf->dataoffset < 0)
228 { psf->error = SFE_BAD_SEEK ;
229 return PSF_SEEK_ERROR ;
233 { psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
238 if (offset < 0 || offset > psf->sf.frames)
239 { psf->error = SFE_BAD_SEEK ;
240 return PSF_SEEK_ERROR ;
243 if (mode != SFM_READ)
244 { /* What to do about write??? */
245 psf->error = SFE_BAD_SEEK ;
246 return PSF_SEEK_ERROR ;
249 psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
251 if ((psf->sf.format & SF_FORMAT_SUBMASK) == SF_FORMAT_DPCM_16)
253 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
255 { len = (total > bufferlen) ? bufferlen : total ;
256 total -= dpcm_read_dles2s (psf, psf->u.sbuf, len) ;
261 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
263 { len = (total > bufferlen) ? bufferlen : total ;
264 total -= dpcm_read_dsc2s (psf, psf->u.sbuf, len) ;
273 xi_write_header (SF_PRIVATE *psf, int calc_length)
278 if ((pxi = psf->fdata) == NULL)
279 return SFE_INTERNAL ;
281 calc_length = calc_length ; /* Avoid a compiler warning. */
283 current = psf_ftell (psf) ;
285 /* Reset the current header length to zero. */
286 psf->header [0] = 0 ;
288 psf_fseek (psf, 0, SEEK_SET) ;
290 string = "Extended Instrument: " ;
291 psf_binheader_writef (psf, "b", string, strlen (string)) ;
292 psf_binheader_writef (psf, "b1", pxi->filename, sizeof (pxi->filename), 0x1A) ;
294 /* Write software version and two byte XI version. */
295 psf_binheader_writef (psf, "eb2", pxi->software, sizeof (pxi->software), (1 << 8) + 2) ;
298 ** Jump note numbers (96), volume envelope (48), pan envelope (48),
299 ** volume points (1), pan points (1)
301 psf_binheader_writef (psf, "z", (size_t) (96 + 48 + 48 + 1 + 1)) ;
303 /* Jump volume loop (3 bytes), pan loop (3), envelope flags (3), vibrato (3)
304 ** fade out (2), 22 unknown bytes, and then write sample_count (2 bytes).
306 psf_binheader_writef (psf, "ez2z2", (size_t) (4 * 3), 0x1234, make_size_t (22), 1) ;
308 pxi->loop_begin = 0 ;
311 psf_binheader_writef (psf, "et844", psf->sf.frames, pxi->loop_begin, pxi->loop_end) ;
313 /* volume, fine tune, flags, pan, note, namelen */
314 psf_binheader_writef (psf, "111111", 128, 0, pxi->sample_flags, 128, 0, strlen (pxi->sample_name)) ;
316 psf_binheader_writef (psf, "b", pxi->sample_name, sizeof (pxi->sample_name)) ;
322 /* Header construction complete so write it out. */
323 psf_fwrite (psf->header, psf->headindex, 1, psf) ;
328 psf->dataoffset = psf->headindex ;
331 psf_fseek (psf, current, SEEK_SET) ;
334 } /* xi_write_header */
337 xi_read_header (SF_PRIVATE *psf)
338 { char buffer [64], name [32] ;
339 short version, fade_out, sample_count ;
340 int k, loop_begin, loop_end ;
341 int sample_sizes [MAX_XI_SAMPLES] ;
343 psf_binheader_readf (psf, "pb", 0, buffer, 21) ;
345 memset (sample_sizes, 0, sizeof (sample_sizes)) ;
348 if (strcmp (buffer, "Extended Instrument:") != 0)
349 return SFE_XI_BAD_HEADER ;
351 memset (buffer, 0, sizeof (buffer)) ;
352 psf_binheader_readf (psf, "b", buffer, 23) ;
354 if (buffer [22] != 0x1A)
355 return SFE_XI_BAD_HEADER ;
358 psf_log_printf (psf, "Extended Instrument : %s\n", buffer) ;
360 psf_binheader_readf (psf, "be2", buffer, 20, &version) ;
362 psf_log_printf (psf, "Software : %s\nVersion : %d.%02d\n", buffer, version / 256, version % 256) ;
364 /* Jump note numbers (96), volume envelope (48), pan envelope (48),
365 ** volume points (1), pan points (1)
367 psf_binheader_readf (psf, "j", 96 + 48 + 48 + 1 + 1) ;
369 psf_binheader_readf (psf, "b", buffer, 12) ;
370 psf_log_printf (psf, "Volume Loop\n sustain : %u\n begin : %u\n end : %u\n",
371 buffer [0], buffer [1], buffer [2]) ;
372 psf_log_printf (psf, "Pan Loop\n sustain : %u\n begin : %u\n end : %u\n",
373 buffer [3], buffer [4], buffer [5]) ;
374 psf_log_printf (psf, "Envelope Flags\n volume : 0x%X\n pan : 0x%X\n",
375 buffer [6] & 0xFF, buffer [7] & 0xFF) ;
377 psf_log_printf (psf, "Vibrato\n type : %u\n sweep : %u\n depth : %u\n rate : %u\n",
378 buffer [8], buffer [9], buffer [10], buffer [11]) ;
381 ** Read fade_out then jump reserved (2 bytes) and ???? (20 bytes) and
384 psf_binheader_readf (psf, "e2j2", &fade_out, 2 + 20, &sample_count) ;
385 psf_log_printf (psf, "Fade out : %d\n", fade_out) ;
387 /* XI file can contain up to 16 samples. */
388 if (sample_count > MAX_XI_SAMPLES)
389 return SFE_XI_EXCESS_SAMPLES ;
391 if (psf->instrument == NULL && (psf->instrument = psf_instrument_alloc ()) == NULL)
392 return SFE_MALLOC_FAILED ;
394 /* Log all data for each sample. */
395 for (k = 0 ; k < sample_count ; k++)
396 { psf_binheader_readf (psf, "e444", &(sample_sizes [k]), &loop_begin, &loop_end) ;
398 /* Read 5 know bytes, 1 unknown byte and 22 name bytes. */
399 psf_binheader_readf (psf, "bb", buffer, 6, name, 22) ;
402 psf_log_printf (psf, "Sample #%d\n name : %s\n", k + 1, name) ;
404 psf_log_printf (psf, " size : %d\n", sample_sizes [k]) ;
408 psf_log_printf (psf, " loop\n begin : %d\n end : %d\n", loop_begin, loop_end) ;
410 psf_log_printf (psf, " volume : %u\n f. tune : %d\n flags : 0x%02X ",
411 buffer [0] & 0xFF, buffer [1] & 0xFF, buffer [2] & 0xFF) ;
413 psf_log_printf (psf, " (") ;
415 psf_log_printf (psf, " Loop") ;
417 psf_log_printf (psf, " PingPong") ;
418 psf_log_printf (psf, (buffer [2] & 16) ? " 16bit" : " 8bit") ;
419 psf_log_printf (psf, " )\n") ;
421 psf_log_printf (psf, " pan : %u\n note : %d\n namelen : %d\n",
422 buffer [3] & 0xFF, buffer [4], buffer [5]) ;
428 { psf->sf.format = SF_FORMAT_XI | SF_FORMAT_DPCM_16 ;
432 { psf->sf.format = SF_FORMAT_XI | SF_FORMAT_DPCM_8 ;
437 while (sample_count > 1 && sample_sizes [sample_count - 1] == 0)
440 /* Currently, we can only handle 1 sample per file. */
442 if (sample_count > 2)
443 { psf_log_printf (psf, "*** Sample count is less than 16 but more than 1.\n") ;
444 psf_log_printf (psf, " sample count : %d sample_sizes [%d] : %d\n",
445 sample_count, sample_count - 1, sample_sizes [sample_count - 1]) ;
446 return SFE_XI_EXCESS_SAMPLES ;
449 psf->dataoffset = psf_fseek (psf, 0, SEEK_CUR) ;
450 psf_log_printf (psf, "Data Offset : %D\n", psf->dataoffset) ;
452 psf->datalength = sample_sizes [0] ;
454 if (psf->dataoffset + psf->datalength > psf->filelength)
455 { psf_log_printf (psf, "*** File seems to be truncated. Should be at least %D bytes long.\n",
456 psf->dataoffset + sample_sizes [0]) ;
457 psf->datalength = psf->filelength - psf->dataoffset ;
460 if (psf_fseek (psf, psf->dataoffset, SEEK_SET) != psf->dataoffset)
461 return SFE_BAD_SEEK ;
463 psf->endian = SF_ENDIAN_LITTLE ;
464 psf->sf.channels = 1 ; /* Always mono */
465 psf->sf.samplerate = 44100 ; /* Always */
467 psf->blockwidth = psf->sf.channels * psf->bytewidth ;
469 if (! psf->sf.frames && psf->blockwidth)
470 psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
472 psf->instrument->basenote = 0 ;
473 psf->instrument->gain = 1 ;
474 psf->instrument->velocity_lo = psf->instrument->key_lo = 0 ;
475 psf->instrument->velocity_hi = psf->instrument->key_hi = 127 ;
478 } /* xi_read_header */
480 /*==============================================================================
483 static void dsc2s_array (XI_PRIVATE *pxi, signed char *src, int count, short *dest) ;
484 static void dsc2i_array (XI_PRIVATE *pxi, signed char *src, int count, int *dest) ;
485 static void dsc2f_array (XI_PRIVATE *pxi, signed char *src, int count, float *dest, float normfact) ;
486 static void dsc2d_array (XI_PRIVATE *pxi, signed char *src, int count, double *dest, double normfact) ;
488 static void dles2s_array (XI_PRIVATE *pxi, short *src, int count, short *dest) ;
489 static void dles2i_array (XI_PRIVATE *pxi, short *src, int count, int *dest) ;
490 static void dles2f_array (XI_PRIVATE *pxi, short *src, int count, float *dest, float normfact) ;
491 static void dles2d_array (XI_PRIVATE *pxi, short *src, int count, double *dest, double normfact) ;
494 dpcm_read_dsc2s (SF_PRIVATE *psf, short *ptr, sf_count_t len)
496 int bufferlen, readcount ;
497 sf_count_t total = 0 ;
499 if ((pxi = psf->fdata) == NULL)
502 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
505 { if (len < bufferlen)
506 bufferlen = (int) len ;
507 readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
508 dsc2s_array (pxi, psf->u.scbuf, readcount, ptr + total) ;
510 if (readcount < bufferlen)
516 } /* dpcm_read_dsc2s */
519 dpcm_read_dsc2i (SF_PRIVATE *psf, int *ptr, sf_count_t len)
521 int bufferlen, readcount ;
522 sf_count_t total = 0 ;
524 if ((pxi = psf->fdata) == NULL)
527 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
530 { if (len < bufferlen)
531 bufferlen = (int) len ;
532 readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
533 dsc2i_array (pxi, psf->u.scbuf, readcount, ptr + total) ;
535 if (readcount < bufferlen)
541 } /* dpcm_read_dsc2i */
544 dpcm_read_dsc2f (SF_PRIVATE *psf, float *ptr, sf_count_t len)
546 int bufferlen, readcount ;
547 sf_count_t total = 0 ;
550 if ((pxi = psf->fdata) == NULL)
553 normfact = (psf->norm_float == SF_TRUE) ? 1.0 / ((float) 0x80) : 1.0 ;
555 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
558 { if (len < bufferlen)
559 bufferlen = (int) len ;
560 readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
561 dsc2f_array (pxi, psf->u.scbuf, readcount, ptr + total, normfact) ;
563 if (readcount < bufferlen)
569 } /* dpcm_read_dsc2f */
572 dpcm_read_dsc2d (SF_PRIVATE *psf, double *ptr, sf_count_t len)
574 int bufferlen, readcount ;
575 sf_count_t total = 0 ;
578 if ((pxi = psf->fdata) == NULL)
581 normfact = (psf->norm_double == SF_TRUE) ? 1.0 / ((double) 0x80) : 1.0 ;
583 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
586 { if (len < bufferlen)
587 bufferlen = (int) len ;
588 readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
589 dsc2d_array (pxi, psf->u.scbuf, readcount, ptr + total, normfact) ;
591 if (readcount < bufferlen)
597 } /* dpcm_read_dsc2d */
599 /*------------------------------------------------------------------------------
603 dpcm_read_dles2s (SF_PRIVATE *psf, short *ptr, sf_count_t len)
605 int bufferlen, readcount ;
606 sf_count_t total = 0 ;
608 if ((pxi = psf->fdata) == NULL)
611 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
614 { if (len < bufferlen)
615 bufferlen = (int) len ;
616 readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
617 dles2s_array (pxi, psf->u.sbuf, readcount, ptr + total) ;
619 if (readcount < bufferlen)
625 } /* dpcm_read_dles2s */
628 dpcm_read_dles2i (SF_PRIVATE *psf, int *ptr, sf_count_t len)
630 int bufferlen, readcount ;
631 sf_count_t total = 0 ;
633 if ((pxi = psf->fdata) == NULL)
636 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
639 { if (len < bufferlen)
640 bufferlen = (int) len ;
641 readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
642 dles2i_array (pxi, psf->u.sbuf, readcount, ptr + total) ;
644 if (readcount < bufferlen)
650 } /* dpcm_read_dles2i */
653 dpcm_read_dles2f (SF_PRIVATE *psf, float *ptr, sf_count_t len)
655 int bufferlen, readcount ;
656 sf_count_t total = 0 ;
659 if ((pxi = psf->fdata) == NULL)
662 normfact = (psf->norm_float == SF_TRUE) ? 1.0 / ((float) 0x8000) : 1.0 ;
664 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
667 { if (len < bufferlen)
668 bufferlen = (int) len ;
669 readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
670 dles2f_array (pxi, psf->u.sbuf, readcount, ptr + total, normfact) ;
672 if (readcount < bufferlen)
678 } /* dpcm_read_dles2f */
681 dpcm_read_dles2d (SF_PRIVATE *psf, double *ptr, sf_count_t len)
683 int bufferlen, readcount ;
684 sf_count_t total = 0 ;
687 if ((pxi = psf->fdata) == NULL)
690 normfact = (psf->norm_double == SF_TRUE) ? 1.0 / ((double) 0x8000) : 1.0 ;
692 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
695 { if (len < bufferlen)
696 bufferlen = (int) len ;
697 readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
698 dles2d_array (pxi, psf->u.sbuf, readcount, ptr + total, normfact) ;
700 if (readcount < bufferlen)
706 } /* dpcm_read_dles2d */
708 /*==============================================================================
711 static void s2dsc_array (XI_PRIVATE *pxi, const short *src, signed char *dest, int count) ;
712 static void i2dsc_array (XI_PRIVATE *pxi, const int *src, signed char *dest, int count) ;
713 static void f2dsc_array (XI_PRIVATE *pxi, const float *src, signed char *dest, int count, float normfact) ;
714 static void d2dsc_array (XI_PRIVATE *pxi, const double *src, signed char *dest, int count, double normfact) ;
716 static void s2dles_array (XI_PRIVATE *pxi, const short *src, short *dest, int count) ;
717 static void i2dles_array (XI_PRIVATE *pxi, const int *src, short *dest, int count) ;
718 static void f2dles_array (XI_PRIVATE *pxi, const float *src, short *dest, int count, float normfact) ;
719 static void d2dles_array (XI_PRIVATE *pxi, const double *src, short *dest, int count, double normfact) ;
723 dpcm_write_s2dsc (SF_PRIVATE *psf, const short *ptr, sf_count_t len)
725 int bufferlen, writecount ;
726 sf_count_t total = 0 ;
728 if ((pxi = psf->fdata) == NULL)
731 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
734 { if (len < bufferlen)
735 bufferlen = (int) len ;
736 s2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen) ;
737 writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
738 total += writecount ;
739 if (writecount < bufferlen)
745 } /* dpcm_write_s2dsc */
748 dpcm_write_i2dsc (SF_PRIVATE *psf, const int *ptr, sf_count_t len)
750 int bufferlen, writecount ;
751 sf_count_t total = 0 ;
753 if ((pxi = psf->fdata) == NULL)
756 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
759 { if (len < bufferlen)
760 bufferlen = (int) len ;
761 i2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen) ;
762 writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
763 total += writecount ;
764 if (writecount < bufferlen)
770 } /* dpcm_write_i2dsc */
773 dpcm_write_f2dsc (SF_PRIVATE *psf, const float *ptr, sf_count_t len)
775 int bufferlen, writecount ;
776 sf_count_t total = 0 ;
779 if ((pxi = psf->fdata) == NULL)
782 normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7F) : 1.0 ;
784 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
787 { if (len < bufferlen)
788 bufferlen = (int) len ;
789 f2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen, normfact) ;
790 writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
791 total += writecount ;
792 if (writecount < bufferlen)
798 } /* dpcm_write_f2dsc */
801 dpcm_write_d2dsc (SF_PRIVATE *psf, const double *ptr, sf_count_t len)
803 int bufferlen, writecount ;
804 sf_count_t total = 0 ;
807 if ((pxi = psf->fdata) == NULL)
810 normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x7F) : 1.0 ;
812 bufferlen = ARRAY_LEN (psf->u.ucbuf) ;
815 { if (len < bufferlen)
816 bufferlen = (int) len ;
817 d2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen, normfact) ;
818 writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ;
819 total += writecount ;
820 if (writecount < bufferlen)
826 } /* dpcm_write_d2dsc */
830 dpcm_write_s2dles (SF_PRIVATE *psf, const short *ptr, sf_count_t len)
832 int bufferlen, writecount ;
833 sf_count_t total = 0 ;
835 if ((pxi = psf->fdata) == NULL)
838 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
841 { if (len < bufferlen)
842 bufferlen = (int) len ;
843 s2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen) ;
844 writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
845 total += writecount ;
846 if (writecount < bufferlen)
852 } /* dpcm_write_s2dles */
855 dpcm_write_i2dles (SF_PRIVATE *psf, const int *ptr, sf_count_t len)
857 int bufferlen, writecount ;
858 sf_count_t total = 0 ;
860 if ((pxi = psf->fdata) == NULL)
863 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
866 { if (len < bufferlen)
867 bufferlen = (int) len ;
868 i2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen) ;
869 writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
870 total += writecount ;
871 if (writecount < bufferlen)
877 } /* dpcm_write_i2dles */
880 dpcm_write_f2dles (SF_PRIVATE *psf, const float *ptr, sf_count_t len)
882 int bufferlen, writecount ;
883 sf_count_t total = 0 ;
886 if ((pxi = psf->fdata) == NULL)
889 normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7FFF) : 1.0 ;
891 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
894 { if (len < bufferlen)
895 bufferlen = (int) len ;
896 f2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen, normfact) ;
897 writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
898 total += writecount ;
899 if (writecount < bufferlen)
905 } /* dpcm_write_f2dles */
908 dpcm_write_d2dles (SF_PRIVATE *psf, const double *ptr, sf_count_t len)
910 int bufferlen, writecount ;
911 sf_count_t total = 0 ;
914 if ((pxi = psf->fdata) == NULL)
917 normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x7FFF) : 1.0 ;
919 bufferlen = ARRAY_LEN (psf->u.sbuf) ;
922 { if (len < bufferlen)
923 bufferlen = (int) len ;
924 d2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen, normfact) ;
925 writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ;
926 total += writecount ;
927 if (writecount < bufferlen)
933 } /* dpcm_write_d2dles */
936 /*==============================================================================
940 dsc2s_array (XI_PRIVATE *pxi, signed char *src, int count, short *dest)
941 { signed char last_val ;
944 last_val = pxi->last_16 >> 8 ;
946 for (k = 0 ; k < count ; k++)
947 { last_val += src [k] ;
948 dest [k] = last_val << 8 ;
951 pxi->last_16 = last_val << 8 ;
955 dsc2i_array (XI_PRIVATE *pxi, signed char *src, int count, int *dest)
956 { signed char last_val ;
959 last_val = pxi->last_16 >> 8 ;
961 for (k = 0 ; k < count ; k++)
962 { last_val += src [k] ;
963 dest [k] = last_val << 24 ;
966 pxi->last_16 = last_val << 8 ;
970 dsc2f_array (XI_PRIVATE *pxi, signed char *src, int count, float *dest, float normfact)
971 { signed char last_val ;
974 last_val = pxi->last_16 >> 8 ;
976 for (k = 0 ; k < count ; k++)
977 { last_val += src [k] ;
978 dest [k] = last_val * normfact ;
981 pxi->last_16 = last_val << 8 ;
985 dsc2d_array (XI_PRIVATE *pxi, signed char *src, int count, double *dest, double normfact)
986 { signed char last_val ;
989 last_val = pxi->last_16 >> 8 ;
991 for (k = 0 ; k < count ; k++)
992 { last_val += src [k] ;
993 dest [k] = last_val * normfact ;
996 pxi->last_16 = last_val << 8 ;
999 /*------------------------------------------------------------------------------
1003 s2dsc_array (XI_PRIVATE *pxi, const short *src, signed char *dest, int count)
1004 { signed char last_val, current ;
1007 last_val = pxi->last_16 >> 8 ;
1009 for (k = 0 ; k < count ; k++)
1010 { current = src [k] >> 8 ;
1011 dest [k] = current - last_val ;
1012 last_val = current ;
1015 pxi->last_16 = last_val << 8 ;
1019 i2dsc_array (XI_PRIVATE *pxi, const int *src, signed char *dest, int count)
1020 { signed char last_val, current ;
1023 last_val = pxi->last_16 >> 8 ;
1025 for (k = 0 ; k < count ; k++)
1026 { current = src [k] >> 24 ;
1027 dest [k] = current - last_val ;
1028 last_val = current ;
1031 pxi->last_16 = last_val << 8 ;
1035 f2dsc_array (XI_PRIVATE *pxi, const float *src, signed char *dest, int count, float normfact)
1036 { signed char last_val, current ;
1039 last_val = pxi->last_16 >> 8 ;
1041 for (k = 0 ; k < count ; k++)
1042 { current = lrintf (src [k] * normfact) ;
1043 dest [k] = current - last_val ;
1044 last_val = current ;
1047 pxi->last_16 = last_val << 8 ;
1051 d2dsc_array (XI_PRIVATE *pxi, const double *src, signed char *dest, int count, double normfact)
1052 { signed char last_val, current ;
1055 last_val = pxi->last_16 >> 8 ;
1057 for (k = 0 ; k < count ; k++)
1058 { current = lrint (src [k] * normfact) ;
1059 dest [k] = current - last_val ;
1060 last_val = current ;
1063 pxi->last_16 = last_val << 8 ;
1066 /*==============================================================================
1070 dles2s_array (XI_PRIVATE *pxi, short *src, int count, short *dest)
1074 last_val = pxi->last_16 ;
1076 for (k = 0 ; k < count ; k++)
1077 { last_val += LES2H_SHORT (src [k]) ;
1078 dest [k] = last_val ;
1081 pxi->last_16 = last_val ;
1082 } /* dles2s_array */
1085 dles2i_array (XI_PRIVATE *pxi, short *src, int count, int *dest)
1089 last_val = pxi->last_16 ;
1091 for (k = 0 ; k < count ; k++)
1092 { last_val += LES2H_SHORT (src [k]) ;
1093 dest [k] = last_val << 16 ;
1096 pxi->last_16 = last_val ;
1097 } /* dles2i_array */
1100 dles2f_array (XI_PRIVATE *pxi, short *src, int count, float *dest, float normfact)
1104 last_val = pxi->last_16 ;
1106 for (k = 0 ; k < count ; k++)
1107 { last_val += LES2H_SHORT (src [k]) ;
1108 dest [k] = last_val * normfact ;
1111 pxi->last_16 = last_val ;
1112 } /* dles2f_array */
1115 dles2d_array (XI_PRIVATE *pxi, short *src, int count, double *dest, double normfact)
1119 last_val = pxi->last_16 ;
1121 for (k = 0 ; k < count ; k++)
1122 { last_val += LES2H_SHORT (src [k]) ;
1123 dest [k] = last_val * normfact ;
1126 pxi->last_16 = last_val ;
1127 } /* dles2d_array */
1129 /*------------------------------------------------------------------------------
1133 s2dles_array (XI_PRIVATE *pxi, const short *src, short *dest, int count)
1134 { short diff, last_val ;
1137 last_val = pxi->last_16 ;
1139 for (k = 0 ; k < count ; k++)
1140 { diff = src [k] - last_val ;
1141 dest [k] = LES2H_SHORT (diff) ;
1142 last_val = src [k] ;
1145 pxi->last_16 = last_val ;
1146 } /* s2dles_array */
1149 i2dles_array (XI_PRIVATE *pxi, const int *src, short *dest, int count)
1150 { short diff, last_val ;
1153 last_val = pxi->last_16 ;
1155 for (k = 0 ; k < count ; k++)
1156 { diff = (src [k] >> 16) - last_val ;
1157 dest [k] = LES2H_SHORT (diff) ;
1158 last_val = src [k] >> 16 ;
1161 pxi->last_16 = last_val ;
1162 } /* i2dles_array */
1165 f2dles_array (XI_PRIVATE *pxi, const float *src, short *dest, int count, float normfact)
1166 { short diff, last_val, current ;
1169 last_val = pxi->last_16 ;
1171 for (k = 0 ; k < count ; k++)
1172 { current = lrintf (src [k] * normfact) ;
1173 diff = current - last_val ;
1174 dest [k] = LES2H_SHORT (diff) ;
1175 last_val = current ;
1178 pxi->last_16 = last_val ;
1179 } /* f2dles_array */
1182 d2dles_array (XI_PRIVATE *pxi, const double *src, short *dest, int count, double normfact)
1183 { short diff, last_val, current ;
1186 last_val = pxi->last_16 ;
1188 for (k = 0 ; k < count ; k++)
1189 { current = lrint (src [k] * normfact) ;
1190 diff = current - last_val ;
1191 dest [k] = LES2H_SHORT (diff) ;
1192 last_val = current ;
1195 pxi->last_16 = last_val ;
1196 } /* d2dles_array */
1199 ** Do not edit or modify anything in this comment block.
1200 ** The arch-tag line is a file identity tag for the GNU Arch
1201 ** revision control system.
1203 ** arch-tag: 1ab2dbe0-29af-4d80-9c6f-cb21b67521bc