--- /dev/null
+/*
+** Copyright (C) 1999-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <math.h>
+
+#include "sndfile.h"
+#include "sfendian.h"
+#include "common.h"
+
+#if CPU_IS_LITTLE_ENDIAN
+ #define DOUBLE64_READ double64_le_read
+ #define DOUBLE64_WRITE double64_le_write
+#elif CPU_IS_BIG_ENDIAN
+ #define DOUBLE64_READ double64_be_read
+ #define DOUBLE64_WRITE double64_be_write
+#endif
+
+/* A 32 number which will not overflow when multiplied by sizeof (double). */
+#define SENSIBLE_LEN (0x8000000)
+
+/*--------------------------------------------------------------------------------------------
+** Processor floating point capabilities. double64_get_capability () returns one of the
+** latter three values.
+*/
+
+enum
+{ DOUBLE_UNKNOWN = 0x00,
+ DOUBLE_CAN_RW_LE = 0x23,
+ DOUBLE_CAN_RW_BE = 0x34,
+ DOUBLE_BROKEN_LE = 0x45,
+ DOUBLE_BROKEN_BE = 0x56
+} ;
+
+/*--------------------------------------------------------------------------------------------
+** Prototypes for private functions.
+*/
+
+static sf_count_t host_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
+static sf_count_t host_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
+static sf_count_t host_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
+static sf_count_t host_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
+
+static sf_count_t host_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ;
+static sf_count_t host_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ;
+static sf_count_t host_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ;
+static sf_count_t host_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ;
+
+static void double64_peak_update (SF_PRIVATE *psf, const double *buffer, int count, sf_count_t indx) ;
+
+static int double64_get_capability (SF_PRIVATE *psf) ;
+
+static sf_count_t replace_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
+static sf_count_t replace_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
+static sf_count_t replace_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
+static sf_count_t replace_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
+
+static sf_count_t replace_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ;
+static sf_count_t replace_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ;
+static sf_count_t replace_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ;
+static sf_count_t replace_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ;
+
+static void d2bd_read (double *buffer, int count) ;
+static void bd2d_write (double *buffer, int count) ;
+
+/*--------------------------------------------------------------------------------------------
+** Exported functions.
+*/
+
+int
+double64_init (SF_PRIVATE *psf)
+{ static int double64_caps ;
+
+ double64_caps = double64_get_capability (psf) ;
+
+ psf->blockwidth = sizeof (double) * psf->sf.channels ;
+
+ if (psf->file.mode == SFM_READ || psf->file.mode == SFM_RDWR)
+ { switch (psf->endian + double64_caps)
+ { case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_BE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->read_short = host_read_d2s ;
+ psf->read_int = host_read_d2i ;
+ psf->read_float = host_read_d2f ;
+ psf->read_double = host_read_d ;
+ break ;
+
+ case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_LE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->read_short = host_read_d2s ;
+ psf->read_int = host_read_d2i ;
+ psf->read_float = host_read_d2f ;
+ psf->read_double = host_read_d ;
+ break ;
+
+ case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_LE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->read_short = host_read_d2s ;
+ psf->read_int = host_read_d2i ;
+ psf->read_float = host_read_d2f ;
+ psf->read_double = host_read_d ;
+ break ;
+
+ case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_BE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->read_short = host_read_d2s ;
+ psf->read_int = host_read_d2i ;
+ psf->read_float = host_read_d2f ;
+ psf->read_double = host_read_d ;
+ break ;
+
+ /* When the CPU is not IEEE compatible. */
+ case (SF_ENDIAN_BIG + DOUBLE_BROKEN_BE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->read_short = replace_read_d2s ;
+ psf->read_int = replace_read_d2i ;
+ psf->read_float = replace_read_d2f ;
+ psf->read_double = replace_read_d ;
+ break ;
+
+ case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_LE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->read_short = replace_read_d2s ;
+ psf->read_int = replace_read_d2i ;
+ psf->read_float = replace_read_d2f ;
+ psf->read_double = replace_read_d ;
+ break ;
+
+ case (SF_ENDIAN_BIG + DOUBLE_BROKEN_LE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->read_short = replace_read_d2s ;
+ psf->read_int = replace_read_d2i ;
+ psf->read_float = replace_read_d2f ;
+ psf->read_double = replace_read_d ;
+ break ;
+
+ case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_BE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->read_short = replace_read_d2s ;
+ psf->read_int = replace_read_d2i ;
+ psf->read_float = replace_read_d2f ;
+ psf->read_double = replace_read_d ;
+ break ;
+
+ default : break ;
+ } ;
+ } ;
+
+ if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+ { switch (psf->endian + double64_caps)
+ { case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_LE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->write_short = host_write_s2d ;
+ psf->write_int = host_write_i2d ;
+ psf->write_float = host_write_f2d ;
+ psf->write_double = host_write_d ;
+ break ;
+
+ case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_BE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->write_short = host_write_s2d ;
+ psf->write_int = host_write_i2d ;
+ psf->write_float = host_write_f2d ;
+ psf->write_double = host_write_d ;
+ break ;
+
+ case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_LE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->write_short = host_write_s2d ;
+ psf->write_int = host_write_i2d ;
+ psf->write_float = host_write_f2d ;
+ psf->write_double = host_write_d ;
+ break ;
+
+ case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_BE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->write_short = host_write_s2d ;
+ psf->write_int = host_write_i2d ;
+ psf->write_float = host_write_f2d ;
+ psf->write_double = host_write_d ;
+ break ;
+
+ /* When the CPU is not IEEE compatible. */
+ case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_LE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->write_short = replace_write_s2d ;
+ psf->write_int = replace_write_i2d ;
+ psf->write_float = replace_write_f2d ;
+ psf->write_double = replace_write_d ;
+ break ;
+
+ case (SF_ENDIAN_BIG + DOUBLE_BROKEN_BE) :
+ psf->data_endswap = SF_FALSE ;
+ psf->write_short = replace_write_s2d ;
+ psf->write_int = replace_write_i2d ;
+ psf->write_float = replace_write_f2d ;
+ psf->write_double = replace_write_d ;
+ break ;
+
+ case (SF_ENDIAN_BIG + DOUBLE_BROKEN_LE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->write_short = replace_write_s2d ;
+ psf->write_int = replace_write_i2d ;
+ psf->write_float = replace_write_f2d ;
+ psf->write_double = replace_write_d ;
+ break ;
+
+ case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_BE) :
+ psf->data_endswap = SF_TRUE ;
+ psf->write_short = replace_write_s2d ;
+ psf->write_int = replace_write_i2d ;
+ psf->write_float = replace_write_f2d ;
+ psf->write_double = replace_write_d ;
+ break ;
+
+ default : break ;
+ } ;
+ } ;
+
+ if (psf->filelength > psf->dataoffset)
+ { psf->datalength = (psf->dataend > 0) ? psf->dataend - psf->dataoffset :
+ psf->filelength - psf->dataoffset ;
+ }
+ else
+ psf->datalength = 0 ;
+
+ psf->sf.frames = psf->datalength / psf->blockwidth ;
+
+ return 0 ;
+} /* double64_init */
+
+/*----------------------------------------------------------------------------
+** From : http://www.hpcf.cam.ac.uk/fp_formats.html
+**
+** 64 bit double precision layout (big endian)
+** Sign bit 0
+** Exponent bits 1-11
+** Mantissa bits 12-63
+** Exponent Offset 1023
+**
+** double single
+**
+** +INF 7FF0000000000000 7F800000
+** -INF FFF0000000000000 FF800000
+** NaN 7FF0000000000001 7F800001
+** to to
+** 7FFFFFFFFFFFFFFF 7FFFFFFF
+** and and
+** FFF0000000000001 FF800001
+** to to
+** FFFFFFFFFFFFFFFF FFFFFFFF
+** +OVER 7FEFFFFFFFFFFFFF 7F7FFFFF
+** -OVER FFEFFFFFFFFFFFFF FF7FFFFF
+** +UNDER 0010000000000000 00800000
+** -UNDER 8010000000000000 80800000
+*/
+
+double
+double64_be_read (unsigned char *cptr)
+{ int exponent, negative, upper, lower ;
+ double dvalue ;
+
+ negative = (cptr [0] & 0x80) ? 1 : 0 ;
+ exponent = ((cptr [0] & 0x7F) << 4) | ((cptr [1] >> 4) & 0xF) ;
+
+ /* Might not have a 64 bit long, so load the mantissa into a double. */
+ upper = (((cptr [1] & 0xF) << 24) | (cptr [2] << 16) | (cptr [3] << 8) | cptr [4]) ;
+ lower = (cptr [5] << 16) | (cptr [6] << 8) | cptr [7] ;
+
+ if (exponent == 0 && upper == 0 && lower == 0)
+ return 0.0 ;
+
+ dvalue = upper + lower / ((double) 0x1000000) ;
+ dvalue += 0x10000000 ;
+
+ exponent = exponent - 0x3FF ;
+
+ dvalue = dvalue / ((double) 0x10000000) ;
+
+ if (negative)
+ dvalue *= -1 ;
+
+ if (exponent > 0)
+ dvalue *= pow (2.0, exponent) ;
+ else if (exponent < 0)
+ dvalue /= pow (2.0, abs (exponent)) ;
+
+ return dvalue ;
+} /* double64_be_read */
+
+double
+double64_le_read (unsigned char *cptr)
+{ int exponent, negative, upper, lower ;
+ double dvalue ;
+
+ negative = (cptr [7] & 0x80) ? 1 : 0 ;
+ exponent = ((cptr [7] & 0x7F) << 4) | ((cptr [6] >> 4) & 0xF) ;
+
+ /* Might not have a 64 bit long, so load the mantissa into a double. */
+ upper = ((cptr [6] & 0xF) << 24) | (cptr [5] << 16) | (cptr [4] << 8) | cptr [3] ;
+ lower = (cptr [2] << 16) | (cptr [1] << 8) | cptr [0] ;
+
+ if (exponent == 0 && upper == 0 && lower == 0)
+ return 0.0 ;
+
+ dvalue = upper + lower / ((double) 0x1000000) ;
+ dvalue += 0x10000000 ;
+
+ exponent = exponent - 0x3FF ;
+
+ dvalue = dvalue / ((double) 0x10000000) ;
+
+ if (negative)
+ dvalue *= -1 ;
+
+ if (exponent > 0)
+ dvalue *= pow (2.0, exponent) ;
+ else if (exponent < 0)
+ dvalue /= pow (2.0, abs (exponent)) ;
+
+ return dvalue ;
+} /* double64_le_read */
+
+void
+double64_be_write (double in, unsigned char *out)
+{ int exponent, mantissa ;
+
+ memset (out, 0, sizeof (double)) ;
+
+ if (fabs (in) < 1e-30)
+ return ;
+
+ if (in < 0.0)
+ { in *= -1.0 ;
+ out [0] |= 0x80 ;
+ } ;
+
+ in = frexp (in, &exponent) ;
+
+ exponent += 1022 ;
+
+ out [0] |= (exponent >> 4) & 0x7F ;
+ out [1] |= (exponent << 4) & 0xF0 ;
+
+ in *= 0x20000000 ;
+ mantissa = lrint (floor (in)) ;
+
+ out [1] |= (mantissa >> 24) & 0xF ;
+ out [2] = (mantissa >> 16) & 0xFF ;
+ out [3] = (mantissa >> 8) & 0xFF ;
+ out [4] = mantissa & 0xFF ;
+
+ in = fmod (in, 1.0) ;
+ in *= 0x1000000 ;
+ mantissa = lrint (floor (in)) ;
+
+ out [5] = (mantissa >> 16) & 0xFF ;
+ out [6] = (mantissa >> 8) & 0xFF ;
+ out [7] = mantissa & 0xFF ;
+
+ return ;
+} /* double64_be_write */
+
+void
+double64_le_write (double in, unsigned char *out)
+{ int exponent, mantissa ;
+
+ memset (out, 0, sizeof (double)) ;
+
+ if (fabs (in) < 1e-30)
+ return ;
+
+ if (in < 0.0)
+ { in *= -1.0 ;
+ out [7] |= 0x80 ;
+ } ;
+
+ in = frexp (in, &exponent) ;
+
+ exponent += 1022 ;
+
+ out [7] |= (exponent >> 4) & 0x7F ;
+ out [6] |= (exponent << 4) & 0xF0 ;
+
+ in *= 0x20000000 ;
+ mantissa = lrint (floor (in)) ;
+
+ out [6] |= (mantissa >> 24) & 0xF ;
+ out [5] = (mantissa >> 16) & 0xFF ;
+ out [4] = (mantissa >> 8) & 0xFF ;
+ out [3] = mantissa & 0xFF ;
+
+ in = fmod (in, 1.0) ;
+ in *= 0x1000000 ;
+ mantissa = lrint (floor (in)) ;
+
+ out [2] = (mantissa >> 16) & 0xFF ;
+ out [1] = (mantissa >> 8) & 0xFF ;
+ out [0] = mantissa & 0xFF ;
+
+ return ;
+} /* double64_le_write */
+
+/*==============================================================================================
+** Private functions.
+*/
+
+static void
+double64_peak_update (SF_PRIVATE *psf, const double *buffer, int count, sf_count_t indx)
+{ int chan ;
+ int k, position ;
+ float fmaxval ;
+
+ for (chan = 0 ; chan < psf->sf.channels ; chan++)
+ { fmaxval = fabs (buffer [chan]) ;
+ position = 0 ;
+ for (k = chan ; k < count ; k += psf->sf.channels)
+ if (fmaxval < fabs (buffer [k]))
+ { fmaxval = fabs (buffer [k]) ;
+ position = k ;
+ } ;
+
+ if (fmaxval > psf->peak_info->peaks [chan].value)
+ { psf->peak_info->peaks [chan].value = fmaxval ;
+ psf->peak_info->peaks [chan].position = psf->write_current + indx + (position / psf->sf.channels) ;
+ } ;
+ } ;
+
+ return ;
+} /* double64_peak_update */
+
+static int
+double64_get_capability (SF_PRIVATE *psf)
+{ union
+ { double d ;
+ unsigned char c [8] ;
+ } data ;
+
+ data.d = 1.234567890123456789 ; /* Some abitrary value. */
+
+ if (! psf->ieee_replace)
+ { /* If this test is true ints and floats are compatible and little endian. */
+ if (data.c [0] == 0xfb && data.c [1] == 0x59 && data.c [2] == 0x8c && data.c [3] == 0x42 &&
+ data.c [4] == 0xca && data.c [5] == 0xc0 && data.c [6] == 0xf3 && data.c [7] == 0x3f)
+ return DOUBLE_CAN_RW_LE ;
+
+ /* If this test is true ints and floats are compatible and big endian. */
+ if (data.c [0] == 0x3f && data.c [1] == 0xf3 && data.c [2] == 0xc0 && data.c [3] == 0xca &&
+ data.c [4] == 0x42 && data.c [5] == 0x8c && data.c [6] == 0x59 && data.c [7] == 0xfb)
+ return DOUBLE_CAN_RW_BE ;
+ } ;
+
+ /* Doubles are broken. Don't expect reading or writing to be fast. */
+ psf_log_printf (psf, "Using IEEE replacement code for double.\n") ;
+
+ return (CPU_IS_LITTLE_ENDIAN) ? DOUBLE_BROKEN_LE : DOUBLE_BROKEN_BE ;
+} /* double64_get_capability */
+
+/*=======================================================================================
+*/
+
+static void
+d2s_array (const double *src, int count, short *dest, double scale)
+{ while (--count >= 0)
+ { dest [count] = lrint (scale * src [count]) ;
+ } ;
+} /* d2s_array */
+
+static void
+d2s_clip_array (const double *src, int count, short *dest, double scale)
+{ while (--count >= 0)
+ { double tmp = scale * src [count] ;
+
+ if (CPU_CLIPS_POSITIVE == 0 && tmp > 32767.0)
+ dest [count] = SHRT_MAX ;
+ else if (CPU_CLIPS_NEGATIVE == 0 && tmp < -32768.0)
+ dest [count] = SHRT_MIN ;
+ else
+ dest [count] = lrint (tmp) ;
+ } ;
+} /* d2s_clip_array */
+
+static void
+d2i_array (const double *src, int count, int *dest, double scale)
+{ while (--count >= 0)
+ { dest [count] = lrint (scale * src [count]) ;
+ } ;
+} /* d2i_array */
+
+static void
+d2i_clip_array (const double *src, int count, int *dest, double scale)
+{ while (--count >= 0)
+ { float tmp = scale * src [count] ;
+
+ if (CPU_CLIPS_POSITIVE == 0 && tmp > (1.0 * INT_MAX))
+ dest [count] = INT_MAX ;
+ else if (CPU_CLIPS_NEGATIVE == 0 && tmp < (-1.0 * INT_MAX))
+ dest [count] = INT_MIN ;
+ else
+ dest [count] = lrint (tmp) ;
+ } ;
+} /* d2i_clip_array */
+
+static inline void
+d2f_array (const double *src, int count, float *dest)
+{ while (--count >= 0)
+ { dest [count] = src [count] ;
+ } ;
+} /* d2f_array */
+
+static inline void
+s2d_array (const short *src, double *dest, int count, double scale)
+{ while (--count >= 0)
+ { dest [count] = scale * src [count] ;
+ } ;
+} /* s2d_array */
+
+static inline void
+i2d_array (const int *src, double *dest, int count, double scale)
+{ while (--count >= 0)
+ { dest [count] = scale * src [count] ;
+ } ;
+} /* i2d_array */
+
+static inline void
+f2d_array (const float *src, double *dest, int count)
+{ while (--count >= 0)
+ { dest [count] = src [count] ;
+ } ;
+} /* f2d_array */
+
+/*----------------------------------------------------------------------------------------------
+*/
+
+static sf_count_t
+host_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len)
+{ void (*convert) (const double *, int, short *, double) ;
+ int bufferlen, readcount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ convert = (psf->add_clipping) ? d2s_clip_array : d2s_array ;
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+ scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFF / psf->float_max ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, readcount) ;
+
+ convert (psf->u.dbuf, readcount, ptr + total, scale) ;
+ total += readcount ;
+ len -= readcount ;
+ if (readcount < bufferlen)
+ break ;
+ } ;
+
+ return total ;
+} /* host_read_d2s */
+
+static sf_count_t
+host_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len)
+{ void (*convert) (const double *, int, int *, double) ;
+ int bufferlen, readcount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ convert = (psf->add_clipping) ? d2i_clip_array : d2i_array ;
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+ scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFFFFFF / psf->float_max ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ convert (psf->u.dbuf, readcount, ptr + total, scale) ;
+ total += readcount ;
+ len -= readcount ;
+ if (readcount < bufferlen)
+ break ;
+ } ;
+
+ return total ;
+} /* host_read_d2i */
+
+static sf_count_t
+host_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len)
+{ int bufferlen, readcount ;
+ sf_count_t total = 0 ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ d2f_array (psf->u.dbuf, readcount, ptr + total) ;
+ total += readcount ;
+ len -= readcount ;
+ if (readcount < bufferlen)
+ break ;
+ } ;
+
+ return total ;
+} /* host_read_d2f */
+
+static sf_count_t
+host_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len)
+{ int bufferlen ;
+ sf_count_t readcount, total = 0 ;
+
+ readcount = psf_fread (ptr, sizeof (double), len, psf) ;
+
+ if (psf->data_endswap != SF_TRUE)
+ return readcount ;
+
+ /* If the read length was sensible, endswap output in one go. */
+ if (readcount < SENSIBLE_LEN)
+ { endswap_double_array (ptr, readcount) ;
+ return readcount ;
+ } ;
+
+ bufferlen = SENSIBLE_LEN ;
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+
+ endswap_double_array (ptr + total, bufferlen) ;
+
+ total += bufferlen ;
+ len -= bufferlen ;
+ } ;
+
+ return total ;
+} /* host_read_d */
+
+static sf_count_t
+host_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / 0x8000 ;
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+
+ s2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ;
+
+ if (psf->peak_info)
+ double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* host_write_s2d */
+
+static sf_count_t
+host_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / (8.0 * 0x10000000) ;
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ i2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ;
+
+ if (psf->peak_info)
+ double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* host_write_i2d */
+
+static sf_count_t
+host_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ f2d_array (ptr + total, psf->u.dbuf, bufferlen) ;
+
+ if (psf->peak_info)
+ double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* host_write_f2d */
+
+static sf_count_t
+host_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+
+ if (psf->peak_info)
+ double64_peak_update (psf, ptr, len, 0) ;
+
+ if (psf->data_endswap != SF_TRUE)
+ return psf_fwrite (ptr, sizeof (double), len, psf) ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+
+ endswap_double_copy (psf->u.dbuf, ptr + total, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* host_write_d */
+
+/*=======================================================================================
+*/
+
+static sf_count_t
+replace_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len)
+{ int bufferlen, readcount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+ scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFF / psf->float_max ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ d2bd_read (psf->u.dbuf, bufferlen) ;
+
+ d2s_array (psf->u.dbuf, readcount, ptr + total, scale) ;
+ total += readcount ;
+ if (readcount < bufferlen)
+ break ;
+ len -= readcount ;
+ } ;
+
+ return total ;
+} /* replace_read_d2s */
+
+static sf_count_t
+replace_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len)
+{ int bufferlen, readcount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+ scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFFFFFF / psf->float_max ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ d2bd_read (psf->u.dbuf, bufferlen) ;
+
+ d2i_array (psf->u.dbuf, readcount, ptr + total, scale) ;
+ total += readcount ;
+ if (readcount < bufferlen)
+ break ;
+ len -= readcount ;
+ } ;
+
+ return total ;
+} /* replace_read_d2i */
+
+static sf_count_t
+replace_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len)
+{ int bufferlen, readcount ;
+ sf_count_t total = 0 ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ d2bd_read (psf->u.dbuf, bufferlen) ;
+
+ memcpy (ptr + total, psf->u.dbuf, bufferlen * sizeof (double)) ;
+
+ total += readcount ;
+ if (readcount < bufferlen)
+ break ;
+ len -= readcount ;
+ } ;
+
+ return total ;
+} /* replace_read_d2f */
+
+static sf_count_t
+replace_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len)
+{ int bufferlen, readcount ;
+ sf_count_t total = 0 ;
+
+ /* FIXME : This is probably nowhere near optimal. */
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, readcount) ;
+
+ d2bd_read (psf->u.dbuf, readcount) ;
+
+ memcpy (ptr + total, psf->u.dbuf, readcount * sizeof (double)) ;
+
+ total += readcount ;
+ if (readcount < bufferlen)
+ break ;
+ len -= readcount ;
+ } ;
+
+ return total ;
+} /* replace_read_d */
+
+static sf_count_t
+replace_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / 0x8000 ;
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ s2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ;
+
+ if (psf->peak_info)
+ double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ;
+
+ bd2d_write (psf->u.dbuf, bufferlen) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* replace_write_s2d */
+
+static sf_count_t
+replace_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+ double scale ;
+
+ scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / (8.0 * 0x10000000) ;
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ i2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ;
+
+ if (psf->peak_info)
+ double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ;
+
+ bd2d_write (psf->u.dbuf, bufferlen) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* replace_write_i2d */
+
+static sf_count_t
+replace_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+ f2d_array (ptr + total, psf->u.dbuf, bufferlen) ;
+
+ bd2d_write (psf->u.dbuf, bufferlen) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* replace_write_f2d */
+
+static sf_count_t
+replace_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len)
+{ int bufferlen, writecount ;
+ sf_count_t total = 0 ;
+
+ /* FIXME : This is probably nowhere near optimal. */
+ if (psf->peak_info)
+ double64_peak_update (psf, ptr, len, 0) ;
+
+ bufferlen = ARRAY_LEN (psf->u.dbuf) ;
+
+ while (len > 0)
+ { if (len < bufferlen)
+ bufferlen = (int) len ;
+
+ memcpy (psf->u.dbuf, ptr + total, bufferlen * sizeof (double)) ;
+
+ bd2d_write (psf->u.dbuf, bufferlen) ;
+
+ if (psf->data_endswap == SF_TRUE)
+ endswap_double_array (psf->u.dbuf, bufferlen) ;
+
+ writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ;
+ total += writecount ;
+ if (writecount < bufferlen)
+ break ;
+ len -= writecount ;
+ } ;
+
+ return total ;
+} /* replace_write_d */
+
+/*----------------------------------------------------------------------------------------------
+*/
+
+static void
+d2bd_read (double *buffer, int count)
+{ while (--count >= 0)
+ { buffer [count] = DOUBLE64_READ ((unsigned char *) (buffer + count)) ;
+ } ;
+} /* d2bd_read */
+
+static void
+bd2d_write (double *buffer, int count)
+{ while (--count >= 0)
+ { DOUBLE64_WRITE (buffer [count], (unsigned char*) (buffer + count)) ;
+ } ;
+} /* bd2d_write */
+
projects / Faustine.git / blobdiff