/* ** 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 */