X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpreter/lib/src/libsndfile-1.0.25/src/xi.c?ds=sidebyside diff --git a/interpreter/lib/src/libsndfile-1.0.25/src/xi.c b/interpreter/lib/src/libsndfile-1.0.25/src/xi.c new file mode 100644 index 0000000..ee60a4b --- /dev/null +++ b/interpreter/lib/src/libsndfile-1.0.25/src/xi.c @@ -0,0 +1,1197 @@ +/* +** Copyright (C) 2003-2011 Erik de Castro Lopo +** +** This program is free software; you can redistribute it and/or modify +** it under the terms of the GNU Lesser General Public License as published by +** the Free Software Foundation; either version 2.1 of the License, or +** (at your option) any later version. +** +** This program is distributed in the hope that it will be useful, +** but WITHOUT ANY WARRANTY; without even the implied warranty of +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +** GNU Lesser General Public License for more details. +** +** You should have received a copy of the GNU Lesser General Public License +** along with this program; if not, write to the Free Software +** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +*/ + +#include "sfconfig.h" + +#include +#include +#include +#include +#include +#include + +#include "sndfile.h" +#include "sfendian.h" +#include "common.h" + +#define MAX_XI_SAMPLES 16 + +/*------------------------------------------------------------------------------ +** Private static functions and tyepdefs. +*/ + +typedef struct +{ /* Warning, this filename is NOT nul terminated. */ + char filename [22] ; + char software [20] ; + char sample_name [22] ; + + int loop_begin, loop_end ; + int sample_flags ; + + /* Data for encoder and decoder. */ + short last_16 ; +} XI_PRIVATE ; + +static int xi_close (SF_PRIVATE *psf) ; +static int xi_write_header (SF_PRIVATE *psf, int calc_length) ; +static int xi_read_header (SF_PRIVATE *psf) ; +static int dpcm_init (SF_PRIVATE *psf) ; + + +static sf_count_t dpcm_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ; + +/*------------------------------------------------------------------------------ +** Public function. +*/ + +int +xi_open (SF_PRIVATE *psf) +{ XI_PRIVATE *pxi ; + int subformat, error = 0 ; + + if (psf->is_pipe) + return SFE_XI_NO_PIPE ; + + if (psf->codec_data) + pxi = psf->codec_data ; + else if ((pxi = calloc (1, sizeof (XI_PRIVATE))) == NULL) + return SFE_MALLOC_FAILED ; + + psf->codec_data = pxi ; + + if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) + { if ((error = xi_read_header (psf))) + return error ; + } ; + + subformat = SF_CODEC (psf->sf.format) ; + + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + { if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_XI) + return SFE_BAD_OPEN_FORMAT ; + + psf->endian = SF_ENDIAN_LITTLE ; + psf->sf.channels = 1 ; /* Always mono */ + psf->sf.samplerate = 44100 ; /* Always */ + + /* Set up default instrument and software name. */ + memcpy (pxi->filename, "Default Name ", sizeof (pxi->filename)) ; + memcpy (pxi->software, PACKAGE "-" VERSION " ", sizeof (pxi->software)) ; + + memset (pxi->sample_name, 0, sizeof (pxi->sample_name)) ; + snprintf (pxi->sample_name, sizeof (pxi->sample_name), "%s", "Sample #1") ; + + pxi->sample_flags = (subformat == SF_FORMAT_DPCM_16) ? 16 : 0 ; + + if (xi_write_header (psf, SF_FALSE)) + return psf->error ; + + psf->write_header = xi_write_header ; + } ; + + psf->container_close = xi_close ; + psf->seek = dpcm_seek ; + + psf->sf.seekable = SF_FALSE ; + + psf->blockwidth = psf->bytewidth * psf->sf.channels ; + + switch (subformat) + { case SF_FORMAT_DPCM_8 : /* 8-bit differential PCM. */ + case SF_FORMAT_DPCM_16 : /* 16-bit differential PCM. */ + error = dpcm_init (psf) ; + break ; + + default : break ; + } ; + + return error ; +} /* xi_open */ + +/*------------------------------------------------------------------------------ +*/ + +static int +xi_close (SF_PRIVATE * UNUSED (psf)) +{ + return 0 ; +} /* xi_close */ + +/*============================================================================== +*/ + +static sf_count_t dpcm_read_dsc2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; +static sf_count_t dpcm_read_dsc2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; +static sf_count_t dpcm_read_dsc2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; +static sf_count_t dpcm_read_dsc2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; + +static sf_count_t dpcm_write_s2dsc (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; +static sf_count_t dpcm_write_i2dsc (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; +static sf_count_t dpcm_write_f2dsc (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; +static sf_count_t dpcm_write_d2dsc (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; + +static sf_count_t dpcm_read_dles2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; +static sf_count_t dpcm_read_dles2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; +static sf_count_t dpcm_read_dles2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; +static sf_count_t dpcm_read_dles2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; + +static sf_count_t dpcm_write_s2dles (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; +static sf_count_t dpcm_write_i2dles (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; +static sf_count_t dpcm_write_f2dles (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; +static sf_count_t dpcm_write_d2dles (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; + +static int +dpcm_init (SF_PRIVATE *psf) +{ if (psf->bytewidth == 0 || psf->sf.channels == 0) + return SFE_INTERNAL ; + + psf->blockwidth = psf->bytewidth * psf->sf.channels ; + + if (psf->file.mode == SFM_READ || psf->file.mode == SFM_RDWR) + { switch (psf->bytewidth) + { case 1 : + psf->read_short = dpcm_read_dsc2s ; + psf->read_int = dpcm_read_dsc2i ; + psf->read_float = dpcm_read_dsc2f ; + psf->read_double = dpcm_read_dsc2d ; + break ; + case 2 : + psf->read_short = dpcm_read_dles2s ; + psf->read_int = dpcm_read_dles2i ; + psf->read_float = dpcm_read_dles2f ; + psf->read_double = dpcm_read_dles2d ; + break ; + default : + psf_log_printf (psf, "dpcm_init() returning SFE_UNIMPLEMENTED\n") ; + return SFE_UNIMPLEMENTED ; + } ; + } ; + + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + { switch (psf->bytewidth) + { case 1 : + psf->write_short = dpcm_write_s2dsc ; + psf->write_int = dpcm_write_i2dsc ; + psf->write_float = dpcm_write_f2dsc ; + psf->write_double = dpcm_write_d2dsc ; + break ; + case 2 : + psf->write_short = dpcm_write_s2dles ; + psf->write_int = dpcm_write_i2dles ; + psf->write_float = dpcm_write_f2dles ; + psf->write_double = dpcm_write_d2dles ; + break ; + default : + psf_log_printf (psf, "dpcm_init() returning SFE_UNIMPLEMENTED\n") ; + return SFE_UNIMPLEMENTED ; + } ; + } ; + + psf->filelength = psf_get_filelen (psf) ; + psf->datalength = (psf->dataend) ? psf->dataend - psf->dataoffset : + psf->filelength - psf->dataoffset ; + psf->sf.frames = psf->datalength / psf->blockwidth ; + + return 0 ; +} /* dpcm_init */ + +/*============================================================================== +*/ + +static sf_count_t +dpcm_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) +{ XI_PRIVATE *pxi ; + int total, bufferlen, len ; + + if ((pxi = psf->codec_data) == NULL) + return SFE_INTERNAL ; + + if (psf->datalength < 0 || psf->dataoffset < 0) + { psf->error = SFE_BAD_SEEK ; + return PSF_SEEK_ERROR ; + } ; + + if (offset == 0) + { psf_fseek (psf, psf->dataoffset, SEEK_SET) ; + pxi->last_16 = 0 ; + return 0 ; + } ; + + if (offset < 0 || offset > psf->sf.frames) + { psf->error = SFE_BAD_SEEK ; + return PSF_SEEK_ERROR ; + } ; + + if (mode != SFM_READ) + { /* What to do about write??? */ + psf->error = SFE_BAD_SEEK ; + return PSF_SEEK_ERROR ; + } ; + + psf_fseek (psf, psf->dataoffset, SEEK_SET) ; + + if ((SF_CODEC (psf->sf.format)) == SF_FORMAT_DPCM_16) + { total = offset ; + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + while (total > 0) + { len = (total > bufferlen) ? bufferlen : total ; + total -= dpcm_read_dles2s (psf, psf->u.sbuf, len) ; + } ; + } + else + { total = offset ; + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + while (total > 0) + { len = (total > bufferlen) ? bufferlen : total ; + total -= dpcm_read_dsc2s (psf, psf->u.sbuf, len) ; + } ; + } ; + + return offset ; +} /* dpcm_seek */ + + +static int +xi_write_header (SF_PRIVATE *psf, int UNUSED (calc_length)) +{ XI_PRIVATE *pxi ; + sf_count_t current ; + const char *string ; + + if ((pxi = psf->codec_data) == NULL) + return SFE_INTERNAL ; + + current = psf_ftell (psf) ; + + /* Reset the current header length to zero. */ + psf->header [0] = 0 ; + psf->headindex = 0 ; + psf_fseek (psf, 0, SEEK_SET) ; + + string = "Extended Instrument: " ; + psf_binheader_writef (psf, "b", string, strlen (string)) ; + psf_binheader_writef (psf, "b1", pxi->filename, sizeof (pxi->filename), 0x1A) ; + + /* Write software version and two byte XI version. */ + psf_binheader_writef (psf, "eb2", pxi->software, sizeof (pxi->software), (1 << 8) + 2) ; + + /* + ** Jump note numbers (96), volume envelope (48), pan envelope (48), + ** volume points (1), pan points (1) + */ + psf_binheader_writef (psf, "z", (size_t) (96 + 48 + 48 + 1 + 1)) ; + + /* Jump volume loop (3 bytes), pan loop (3), envelope flags (3), vibrato (3) + ** fade out (2), 22 unknown bytes, and then write sample_count (2 bytes). + */ + psf_binheader_writef (psf, "ez2z2", (size_t) (4 * 3), 0x1234, make_size_t (22), 1) ; + + pxi->loop_begin = 0 ; + pxi->loop_end = 0 ; + + psf_binheader_writef (psf, "et844", psf->sf.frames, pxi->loop_begin, pxi->loop_end) ; + + /* volume, fine tune, flags, pan, note, namelen */ + psf_binheader_writef (psf, "111111", 128, 0, pxi->sample_flags, 128, 0, strlen (pxi->sample_name)) ; + + psf_binheader_writef (psf, "b", pxi->sample_name, sizeof (pxi->sample_name)) ; + + + + + + /* Header construction complete so write it out. */ + psf_fwrite (psf->header, psf->headindex, 1, psf) ; + + if (psf->error) + return psf->error ; + + psf->dataoffset = psf->headindex ; + + if (current > 0) + psf_fseek (psf, current, SEEK_SET) ; + + return psf->error ; +} /* xi_write_header */ + +static int +xi_read_header (SF_PRIVATE *psf) +{ char buffer [64], name [32] ; + short version, fade_out, sample_count ; + int k, loop_begin, loop_end ; + int sample_sizes [MAX_XI_SAMPLES] ; + + psf_binheader_readf (psf, "pb", 0, buffer, 21) ; + + memset (sample_sizes, 0, sizeof (sample_sizes)) ; + + buffer [20] = 0 ; + if (strcmp (buffer, "Extended Instrument:") != 0) + return SFE_XI_BAD_HEADER ; + + memset (buffer, 0, sizeof (buffer)) ; + psf_binheader_readf (psf, "b", buffer, 23) ; + + if (buffer [22] != 0x1A) + return SFE_XI_BAD_HEADER ; + + buffer [22] = 0 ; + psf_log_printf (psf, "Extended Instrument : %s\n", buffer) ; + + psf_binheader_readf (psf, "be2", buffer, 20, &version) ; + buffer [19] = 0 ; + psf_log_printf (psf, "Software : %s\nVersion : %d.%02d\n", buffer, version / 256, version % 256) ; + + /* Jump note numbers (96), volume envelope (48), pan envelope (48), + ** volume points (1), pan points (1) + */ + psf_binheader_readf (psf, "j", 96 + 48 + 48 + 1 + 1) ; + + psf_binheader_readf (psf, "b", buffer, 12) ; + psf_log_printf (psf, "Volume Loop\n sustain : %u\n begin : %u\n end : %u\n", + buffer [0], buffer [1], buffer [2]) ; + psf_log_printf (psf, "Pan Loop\n sustain : %u\n begin : %u\n end : %u\n", + buffer [3], buffer [4], buffer [5]) ; + psf_log_printf (psf, "Envelope Flags\n volume : 0x%X\n pan : 0x%X\n", + buffer [6] & 0xFF, buffer [7] & 0xFF) ; + + psf_log_printf (psf, "Vibrato\n type : %u\n sweep : %u\n depth : %u\n rate : %u\n", + buffer [8], buffer [9], buffer [10], buffer [11]) ; + + /* + ** Read fade_out then jump reserved (2 bytes) and ???? (20 bytes) and + ** sample_count. + */ + psf_binheader_readf (psf, "e2j2", &fade_out, 2 + 20, &sample_count) ; + psf_log_printf (psf, "Fade out : %d\n", fade_out) ; + + /* XI file can contain up to 16 samples. */ + if (sample_count > MAX_XI_SAMPLES) + return SFE_XI_EXCESS_SAMPLES ; + + if (psf->instrument == NULL && (psf->instrument = psf_instrument_alloc ()) == NULL) + return SFE_MALLOC_FAILED ; + + /* Log all data for each sample. */ + for (k = 0 ; k < sample_count ; k++) + { psf_binheader_readf (psf, "e444", &(sample_sizes [k]), &loop_begin, &loop_end) ; + + /* Read 5 know bytes, 1 unknown byte and 22 name bytes. */ + psf_binheader_readf (psf, "bb", buffer, 6, name, 22) ; + name [21] = 0 ; + + psf_log_printf (psf, "Sample #%d\n name : %s\n", k + 1, name) ; + + psf_log_printf (psf, " size : %d\n", sample_sizes [k]) ; + + + + psf_log_printf (psf, " loop\n begin : %d\n end : %d\n", loop_begin, loop_end) ; + + psf_log_printf (psf, " volume : %u\n f. tune : %d\n flags : 0x%02X ", + buffer [0] & 0xFF, buffer [1] & 0xFF, buffer [2] & 0xFF) ; + + psf_log_printf (psf, " (") ; + if (buffer [2] & 1) + psf_log_printf (psf, " Loop") ; + if (buffer [2] & 2) + psf_log_printf (psf, " PingPong") ; + psf_log_printf (psf, (buffer [2] & 16) ? " 16bit" : " 8bit") ; + psf_log_printf (psf, " )\n") ; + + psf_log_printf (psf, " pan : %u\n note : %d\n namelen : %d\n", + buffer [3] & 0xFF, buffer [4], buffer [5]) ; + + if (k != 0) + continue ; + + if (buffer [2] & 16) + { psf->sf.format = SF_FORMAT_XI | SF_FORMAT_DPCM_16 ; + psf->bytewidth = 2 ; + } + else + { psf->sf.format = SF_FORMAT_XI | SF_FORMAT_DPCM_8 ; + psf->bytewidth = 1 ; + } ; + } ; + + while (sample_count > 1 && sample_sizes [sample_count - 1] == 0) + sample_count -- ; + + /* Currently, we can only handle 1 sample per file. */ + + if (sample_count > 2) + { psf_log_printf (psf, "*** Sample count is less than 16 but more than 1.\n") ; + psf_log_printf (psf, " sample count : %d sample_sizes [%d] : %d\n", + sample_count, sample_count - 1, sample_sizes [sample_count - 1]) ; + return SFE_XI_EXCESS_SAMPLES ; + } ; + + psf->datalength = sample_sizes [0] ; + + psf->dataoffset = psf_ftell (psf) ; + if (psf->dataoffset < 0) + { psf_log_printf (psf, "*** Bad Data Offset : %D\n", psf->dataoffset) ; + return SFE_BAD_OFFSET ; + } ; + psf_log_printf (psf, "Data Offset : %D\n", psf->dataoffset) ; + + if (psf->dataoffset + psf->datalength > psf->filelength) + { psf_log_printf (psf, "*** File seems to be truncated. Should be at least %D bytes long.\n", + psf->dataoffset + sample_sizes [0]) ; + psf->datalength = psf->filelength - psf->dataoffset ; + } ; + + if (psf_fseek (psf, psf->dataoffset, SEEK_SET) != psf->dataoffset) + return SFE_BAD_SEEK ; + + psf->endian = SF_ENDIAN_LITTLE ; + psf->sf.channels = 1 ; /* Always mono */ + psf->sf.samplerate = 44100 ; /* Always */ + + psf->blockwidth = psf->sf.channels * psf->bytewidth ; + + if (! psf->sf.frames && psf->blockwidth) + psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ; + + psf->instrument->basenote = 0 ; + psf->instrument->gain = 1 ; + psf->instrument->velocity_lo = psf->instrument->key_lo = 0 ; + psf->instrument->velocity_hi = psf->instrument->key_hi = 127 ; + + return 0 ; +} /* xi_read_header */ + +/*============================================================================== +*/ + +static void dsc2s_array (XI_PRIVATE *pxi, signed char *src, int count, short *dest) ; +static void dsc2i_array (XI_PRIVATE *pxi, signed char *src, int count, int *dest) ; +static void dsc2f_array (XI_PRIVATE *pxi, signed char *src, int count, float *dest, float normfact) ; +static void dsc2d_array (XI_PRIVATE *pxi, signed char *src, int count, double *dest, double normfact) ; + +static void dles2s_array (XI_PRIVATE *pxi, short *src, int count, short *dest) ; +static void dles2i_array (XI_PRIVATE *pxi, short *src, int count, int *dest) ; +static void dles2f_array (XI_PRIVATE *pxi, short *src, int count, float *dest, float normfact) ; +static void dles2d_array (XI_PRIVATE *pxi, short *src, int count, double *dest, double normfact) ; + +static sf_count_t +dpcm_read_dsc2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + dsc2s_array (pxi, psf->u.scbuf, readcount, ptr + total) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dsc2s */ + +static sf_count_t +dpcm_read_dsc2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + dsc2i_array (pxi, psf->u.scbuf, readcount, ptr + total) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dsc2i */ + +static sf_count_t +dpcm_read_dsc2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + float normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_float == SF_TRUE) ? 1.0 / ((float) 0x80) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + dsc2f_array (pxi, psf->u.scbuf, readcount, ptr + total, normfact) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dsc2f */ + +static sf_count_t +dpcm_read_dsc2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + double normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_double == SF_TRUE) ? 1.0 / ((double) 0x80) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + dsc2d_array (pxi, psf->u.scbuf, readcount, ptr + total, normfact) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dsc2d */ + +/*------------------------------------------------------------------------------ +*/ + +static sf_count_t +dpcm_read_dles2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + dles2s_array (pxi, psf->u.sbuf, readcount, ptr + total) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dles2s */ + +static sf_count_t +dpcm_read_dles2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + dles2i_array (pxi, psf->u.sbuf, readcount, ptr + total) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dles2i */ + +static sf_count_t +dpcm_read_dles2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + float normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_float == SF_TRUE) ? 1.0 / ((float) 0x8000) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + dles2f_array (pxi, psf->u.sbuf, readcount, ptr + total, normfact) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dles2f */ + +static sf_count_t +dpcm_read_dles2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, readcount ; + sf_count_t total = 0 ; + double normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_double == SF_TRUE) ? 1.0 / ((double) 0x8000) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + readcount = psf_fread (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + dles2d_array (pxi, psf->u.sbuf, readcount, ptr + total, normfact) ; + total += readcount ; + if (readcount < bufferlen) + break ; + len -= readcount ; + } ; + + return total ; +} /* dpcm_read_dles2d */ + +/*============================================================================== +*/ + +static void s2dsc_array (XI_PRIVATE *pxi, const short *src, signed char *dest, int count) ; +static void i2dsc_array (XI_PRIVATE *pxi, const int *src, signed char *dest, int count) ; +static void f2dsc_array (XI_PRIVATE *pxi, const float *src, signed char *dest, int count, float normfact) ; +static void d2dsc_array (XI_PRIVATE *pxi, const double *src, signed char *dest, int count, double normfact) ; + +static void s2dles_array (XI_PRIVATE *pxi, const short *src, short *dest, int count) ; +static void i2dles_array (XI_PRIVATE *pxi, const int *src, short *dest, int count) ; +static void f2dles_array (XI_PRIVATE *pxi, const float *src, short *dest, int count, float normfact) ; +static void d2dles_array (XI_PRIVATE *pxi, const double *src, short *dest, int count, double normfact) ; + + +static sf_count_t +dpcm_write_s2dsc (SF_PRIVATE *psf, const short *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + s2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen) ; + writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_s2dsc */ + +static sf_count_t +dpcm_write_i2dsc (SF_PRIVATE *psf, const int *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + i2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen) ; + writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_i2dsc */ + +static sf_count_t +dpcm_write_f2dsc (SF_PRIVATE *psf, const float *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + float normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7F) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + f2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen, normfact) ; + writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_f2dsc */ + +static sf_count_t +dpcm_write_d2dsc (SF_PRIVATE *psf, const double *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + double normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x7F) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.ucbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + d2dsc_array (pxi, ptr + total, psf->u.scbuf, bufferlen, normfact) ; + writecount = psf_fwrite (psf->u.scbuf, sizeof (signed char), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_d2dsc */ + + +static sf_count_t +dpcm_write_s2dles (SF_PRIVATE *psf, const short *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + s2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen) ; + writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_s2dles */ + +static sf_count_t +dpcm_write_i2dles (SF_PRIVATE *psf, const int *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + i2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen) ; + writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_i2dles */ + +static sf_count_t +dpcm_write_f2dles (SF_PRIVATE *psf, const float *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + float normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7FFF) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + f2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen, normfact) ; + writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_f2dles */ + +static sf_count_t +dpcm_write_d2dles (SF_PRIVATE *psf, const double *ptr, sf_count_t len) +{ XI_PRIVATE *pxi ; + int bufferlen, writecount ; + sf_count_t total = 0 ; + double normfact ; + + if ((pxi = psf->codec_data) == NULL) + return 0 ; + + normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x7FFF) : 1.0 ; + + bufferlen = ARRAY_LEN (psf->u.sbuf) ; + + while (len > 0) + { if (len < bufferlen) + bufferlen = (int) len ; + d2dles_array (pxi, ptr + total, psf->u.sbuf, bufferlen, normfact) ; + writecount = psf_fwrite (psf->u.sbuf, sizeof (short), bufferlen, psf) ; + total += writecount ; + if (writecount < bufferlen) + break ; + len -= writecount ; + } ; + + return total ; +} /* dpcm_write_d2dles */ + + +/*============================================================================== +*/ + +static void +dsc2s_array (XI_PRIVATE *pxi, signed char *src, int count, short *dest) +{ signed char last_val ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { last_val += src [k] ; + dest [k] = last_val << 8 ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* dsc2s_array */ + +static void +dsc2i_array (XI_PRIVATE *pxi, signed char *src, int count, int *dest) +{ signed char last_val ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { last_val += src [k] ; + dest [k] = last_val << 24 ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* dsc2i_array */ + +static void +dsc2f_array (XI_PRIVATE *pxi, signed char *src, int count, float *dest, float normfact) +{ signed char last_val ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { last_val += src [k] ; + dest [k] = last_val * normfact ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* dsc2f_array */ + +static void +dsc2d_array (XI_PRIVATE *pxi, signed char *src, int count, double *dest, double normfact) +{ signed char last_val ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { last_val += src [k] ; + dest [k] = last_val * normfact ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* dsc2d_array */ + +/*------------------------------------------------------------------------------ +*/ + +static void +s2dsc_array (XI_PRIVATE *pxi, const short *src, signed char *dest, int count) +{ signed char last_val, current ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { current = src [k] >> 8 ; + dest [k] = current - last_val ; + last_val = current ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* s2dsc_array */ + +static void +i2dsc_array (XI_PRIVATE *pxi, const int *src, signed char *dest, int count) +{ signed char last_val, current ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { current = src [k] >> 24 ; + dest [k] = current - last_val ; + last_val = current ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* i2dsc_array */ + +static void +f2dsc_array (XI_PRIVATE *pxi, const float *src, signed char *dest, int count, float normfact) +{ signed char last_val, current ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { current = lrintf (src [k] * normfact) ; + dest [k] = current - last_val ; + last_val = current ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* f2dsc_array */ + +static void +d2dsc_array (XI_PRIVATE *pxi, const double *src, signed char *dest, int count, double normfact) +{ signed char last_val, current ; + int k ; + + last_val = pxi->last_16 >> 8 ; + + for (k = 0 ; k < count ; k++) + { current = lrint (src [k] * normfact) ; + dest [k] = current - last_val ; + last_val = current ; + } ; + + pxi->last_16 = last_val << 8 ; +} /* d2dsc_array */ + +/*============================================================================== +*/ + +static void +dles2s_array (XI_PRIVATE *pxi, short *src, int count, short *dest) +{ short last_val ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { last_val += LES2H_SHORT (src [k]) ; + dest [k] = last_val ; + } ; + + pxi->last_16 = last_val ; +} /* dles2s_array */ + +static void +dles2i_array (XI_PRIVATE *pxi, short *src, int count, int *dest) +{ short last_val ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { last_val += LES2H_SHORT (src [k]) ; + dest [k] = last_val << 16 ; + } ; + + pxi->last_16 = last_val ; +} /* dles2i_array */ + +static void +dles2f_array (XI_PRIVATE *pxi, short *src, int count, float *dest, float normfact) +{ short last_val ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { last_val += LES2H_SHORT (src [k]) ; + dest [k] = last_val * normfact ; + } ; + + pxi->last_16 = last_val ; +} /* dles2f_array */ + +static void +dles2d_array (XI_PRIVATE *pxi, short *src, int count, double *dest, double normfact) +{ short last_val ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { last_val += LES2H_SHORT (src [k]) ; + dest [k] = last_val * normfact ; + } ; + + pxi->last_16 = last_val ; +} /* dles2d_array */ + +/*------------------------------------------------------------------------------ +*/ + +static void +s2dles_array (XI_PRIVATE *pxi, const short *src, short *dest, int count) +{ short diff, last_val ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { diff = src [k] - last_val ; + dest [k] = LES2H_SHORT (diff) ; + last_val = src [k] ; + } ; + + pxi->last_16 = last_val ; +} /* s2dles_array */ + +static void +i2dles_array (XI_PRIVATE *pxi, const int *src, short *dest, int count) +{ short diff, last_val ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { diff = (src [k] >> 16) - last_val ; + dest [k] = LES2H_SHORT (diff) ; + last_val = src [k] >> 16 ; + } ; + + pxi->last_16 = last_val ; +} /* i2dles_array */ + +static void +f2dles_array (XI_PRIVATE *pxi, const float *src, short *dest, int count, float normfact) +{ short diff, last_val, current ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { current = lrintf (src [k] * normfact) ; + diff = current - last_val ; + dest [k] = LES2H_SHORT (diff) ; + last_val = current ; + } ; + + pxi->last_16 = last_val ; +} /* f2dles_array */ + +static void +d2dles_array (XI_PRIVATE *pxi, const double *src, short *dest, int count, double normfact) +{ short diff, last_val, current ; + int k ; + + last_val = pxi->last_16 ; + + for (k = 0 ; k < count ; k++) + { current = lrint (src [k] * normfact) ; + diff = current - last_val ; + dest [k] = LES2H_SHORT (diff) ; + last_val = current ; + } ; + + pxi->last_16 = last_val ; +} /* d2dles_array */ +