ref: d44e2d7e3a6e0cba9781f5366003212652d542e5
dir: /common/libsndfile/src/float32.c/
/*
** Copyright (C) 1999-2001 Erik de Castro Lopo <erikd@zip.com.au>
**
** 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 <stdio.h>
#include <unistd.h>
#include <string.h>
#include <math.h>
#include "sndfile.h"
#include "config.h"
#include "sfendian.h"
#include "common.h"
/*--------------------------------------------------------------------------------------------
*/
/*--------------------------------------------------------------------------------------------
** Prototypes for private functions.
*/
static int host_read_f2s (SF_PRIVATE *psf, short *ptr, int len) ;
static int host_read_f2i (SF_PRIVATE *psf, int *ptr, int len) ;
static int host_read_f (SF_PRIVATE *psf, float *ptr, int len) ;
static int host_read_f2d (SF_PRIVATE *psf, double *ptr, int len, int normalize) ;
static int host_write_s2f (SF_PRIVATE *psf, short *ptr, int len) ;
static int host_write_i2f (SF_PRIVATE *psf, int *ptr, int len) ;
static int host_write_f (SF_PRIVATE *psf, float *ptr, int len) ;
static int host_write_d2f (SF_PRIVATE *psf, double *ptr, int len, int normalize) ;
static void f2s_array (float *buffer, unsigned int count, short *ptr, int index) ;
static void f2i_array (float *buffer, unsigned int count, int *ptr, int index) ;
static void f2d_array (float *buffer, unsigned int count, double *ptr, int index) ;
static void s2f_array (short *ptr, int index, float *buffer, unsigned int count) ;
static void i2f_array (int *ptr, int index, float *buffer, unsigned int count) ;
static void d2f_array (double *ptr, int index, float *buffer, unsigned int count) ;
static void float32_peak_update (SF_PRIVATE *psf, float *buffer, int count, int index) ;
static int broken_read_f2s (SF_PRIVATE *psf, short *ptr, int len) ;
static int broken_read_f2i (SF_PRIVATE *psf, int *ptr, int len) ;
static int broken_read_f (SF_PRIVATE *psf, float *ptr, int len) ;
static int broken_read_f2d (SF_PRIVATE *psf, double *ptr, int len, int normalize) ;
static int broken_write_s2f (SF_PRIVATE *psf, short *ptr, int len) ;
static int broken_write_i2f (SF_PRIVATE *psf, int *ptr, int len) ;
static int broken_write_f (SF_PRIVATE *psf, float *ptr, int len) ;
static int broken_write_d2f (SF_PRIVATE *psf, double *ptr, int len, int normalize) ;
static void bf2f_array (float *buffer, unsigned int count) ;
static void f2bf_array (float *buffer, unsigned int count) ;
/*--------------------------------------------------------------------------------------------
** Exported functions.
*/
int
float32_read_init (SF_PRIVATE *psf)
{ static int float_caps = FLOAT_UNKNOWN ;
if (float_caps == FLOAT_UNKNOWN)
float_caps = float32_get_capability (psf->endian) ;
switch (psf->endian + 0x1000 * float_caps)
{ case (SF_ENDIAN_BIG + 0x1000 * FLOAT_CAN_RW_BE) :
psf->fl32_endswap = SF_FALSE ;
psf->read_short = (func_short) host_read_f2s ;
psf->read_int = (func_int) host_read_f2i ;
psf->read_float = (func_float) host_read_f ;
psf->read_double = (func_double) host_read_f2d ;
break ;
case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_CAN_RW_LE) :
psf->fl32_endswap = SF_FALSE ;
psf->read_short = (func_short) host_read_f2s ;
psf->read_int = (func_int) host_read_f2i ;
psf->read_float = (func_float) host_read_f ;
psf->read_double = (func_double) host_read_f2d ;
break ;
case (SF_ENDIAN_BIG + 0x1000 * FLOAT_CAN_RW_LE) :
psf->fl32_endswap = SF_TRUE ;
psf->read_short = (func_short) host_read_f2s ;
psf->read_int = (func_int) host_read_f2i ;
psf->read_float = (func_float) host_read_f ;
psf->read_double = (func_double) host_read_f2d ;
break ;
case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_CAN_RW_BE) :
psf->fl32_endswap = SF_TRUE ;
psf->read_short = (func_short) host_read_f2s ;
psf->read_int = (func_int) host_read_f2i ;
psf->read_float = (func_float) host_read_f ;
psf->read_double = (func_double) host_read_f2d ;
break ;
case (SF_ENDIAN_BIG + 0x1000 * FLOAT_BROKEN_LE) :
psf->fl32_endswap = SF_TRUE ;
psf->read_short = (func_short) broken_read_f2s ;
psf->read_int = (func_int) broken_read_f2i ;
psf->read_float = (func_float) broken_read_f ;
psf->read_double = (func_double) broken_read_f2d ;
break ;
case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_BROKEN_LE) :
psf->fl32_endswap = SF_FALSE ;
psf->read_short = (func_short) broken_read_f2s ;
psf->read_int = (func_int) broken_read_f2i ;
psf->read_float = (func_float) broken_read_f ;
psf->read_double = (func_double) broken_read_f2d ;
break ;
case (SF_ENDIAN_BIG + 0x1000 * FLOAT_BROKEN_BE) :
psf->fl32_endswap = SF_FALSE ;
psf->read_short = (func_short) broken_read_f2s ;
psf->read_int = (func_int) broken_read_f2i ;
psf->read_float = (func_float) broken_read_f ;
psf->read_double = (func_double) broken_read_f2d ;
break ;
case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_BROKEN_BE) :
psf->fl32_endswap = SF_TRUE ;
psf->read_short = (func_short) broken_read_f2s ;
psf->read_int = (func_int) broken_read_f2i ;
psf->read_float = (func_float) broken_read_f ;
psf->read_double = (func_double) broken_read_f2d ;
break ;
default : break ;
} ;
return 0 ;
} /* float32_read_init */
int
float32_write_init (SF_PRIVATE *psf)
{ static int float_caps = FLOAT_UNKNOWN ;
if (float_caps == FLOAT_UNKNOWN)
float_caps = float32_get_capability (psf->endian) ;
switch (psf->endian + 0x1000 * float_caps)
{ case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_CAN_RW_LE) :
psf->fl32_endswap = SF_FALSE ;
psf->write_short = (func_short) host_write_s2f ;
psf->write_int = (func_int) host_write_i2f ;
psf->write_float = (func_float) host_write_f ;
psf->write_double = (func_double) host_write_d2f ;
break ;
case (SF_ENDIAN_BIG + 0x1000 * FLOAT_CAN_RW_BE) :
psf->fl32_endswap = SF_FALSE ;
psf->write_short = (func_short) host_write_s2f ;
psf->write_int = (func_int) host_write_i2f ;
psf->write_float = (func_float) host_write_f ;
psf->write_double = (func_double) host_write_d2f ;
break ;
case (SF_ENDIAN_BIG + 0x1000 * FLOAT_CAN_RW_LE) :
psf->fl32_endswap = SF_TRUE ;
psf->write_short = (func_short) host_write_s2f ;
psf->write_int = (func_int) host_write_i2f ;
psf->write_float = (func_float) host_write_f ;
psf->write_double = (func_double) host_write_d2f ;
break ;
case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_CAN_RW_BE) :
psf->fl32_endswap = SF_TRUE ;
psf->write_short = (func_short) host_write_s2f ;
psf->write_int = (func_int) host_write_i2f ;
psf->write_float = (func_float) host_write_f ;
psf->write_double = (func_double) host_write_d2f ;
break ;
case (SF_ENDIAN_BIG + 0x1000 * FLOAT_BROKEN_LE) :
psf->fl32_endswap = SF_TRUE ;
psf->write_short = (func_short) broken_write_s2f ;
psf->write_int = (func_int) broken_write_i2f ;
psf->write_float = (func_float) broken_write_f ;
psf->write_double = (func_double) broken_write_d2f ;
break ;
case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_BROKEN_LE) :
psf->fl32_endswap = SF_FALSE ;
psf->write_short = (func_short) broken_write_s2f ;
psf->write_int = (func_int) broken_write_i2f ;
psf->write_float = (func_float) broken_write_f ;
psf->write_double = (func_double) broken_write_d2f ;
break ;
case (SF_ENDIAN_BIG + 0x1000 * FLOAT_BROKEN_BE) :
psf->fl32_endswap = SF_FALSE ;
psf->write_short = (func_short) broken_write_s2f ;
psf->write_int = (func_int) broken_write_i2f ;
psf->write_float = (func_float) broken_write_f ;
psf->write_double = (func_double) broken_write_d2f ;
break ;
case (SF_ENDIAN_LITTLE + 0x1000 * FLOAT_BROKEN_BE) :
psf->fl32_endswap = SF_TRUE ;
psf->write_short = (func_short) broken_write_s2f ;
psf->write_int = (func_int) broken_write_i2f ;
psf->write_float = (func_float) broken_write_f ;
psf->write_double = (func_double) broken_write_d2f ;
break ;
default : break ;
} ;
return 0 ;
} /* float32_write_init */
float
float32_read (unsigned char *cptr)
{ int exponent, mantissa, negative ;
float fvalue ;
if (CPU_IS_LITTLE_ENDIAN)
{ negative = cptr [3] & 0x80 ;
exponent = ((cptr [3] & 0x7F) << 1) | ((cptr [2] & 0x80) ? 1 : 0);
mantissa = ((cptr [2] & 0x7F) << 16) | (cptr [1] << 8) | (cptr [0]) ;
}
else
{ negative = cptr [0] & 0x80 ;
exponent = ((cptr [0] & 0x7F) << 1) | ((cptr [1] & 0x80) ? 1 : 0);
mantissa = ((cptr [1] & 0x7F) << 16) | (cptr [2] << 8) | (cptr [3]) ;
} ;
if (! (exponent || mantissa))
return 0.0 ;
mantissa |= 0x800000 ;
exponent = exponent ? exponent - 127 : 0 ;
fvalue = mantissa ? ((float) mantissa) / ((float) 0x800000) : 0.0 ;
if (negative)
fvalue *= -1 ;
if (exponent > 0)
fvalue *= (1 << exponent) ;
else if (exponent < 0)
fvalue /= (1 << abs (exponent)) ;
return fvalue ;
} /* float32_read */
void
float32_write (float in, unsigned char *out)
{ int exponent, mantissa, negative = 0 ;
*((int*) out) = 0 ;
if (in == 0.0)
return ;
if (in < 0.0)
{ in *= -1.0 ;
negative = 1 ;
} ;
in = frexp (in, &exponent) ;
exponent += 126 ;
in *= (float) 0x1000000 ;
mantissa = (((int) in) & 0x7FFFFF) ;
if (CPU_IS_LITTLE_ENDIAN)
{ if (negative)
out [3] |= 0x80 ;
if (exponent & 0x01)
out [2] |= 0x80 ;
out [0] = mantissa & 0xFF ;
out [1] = (mantissa >> 8) & 0xFF ;
out [2] |= (mantissa >> 16) & 0x7F ;
out [3] |= (exponent >> 1) & 0x7F ;
}
else
{ if (negative)
out [0] |= 0x80 ;
if (exponent & 0x01)
out [1] |= 0x80 ;
out [3] = mantissa & 0xFF ;
out [2] = (mantissa >> 8) & 0xFF ;
out [1] |= (mantissa >> 16) & 0x7F ;
out [0] |= (exponent >> 1) & 0x7F ;
}
return ;
} /* float32_write */
/*==============================================================================================
** Private functions.
*/
static void
float32_peak_update (SF_PRIVATE *psf, float *buffer, int count, int index)
{ int k, chan, 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.peak[chan].value)
{ psf->peak.peak[chan].value = fmaxval ;
psf->peak.peak[chan].position = psf->current + index + (position /psf->sf.channels) ;
} ;
} ;
return ;
} /* float32_peak_update */
int
float32_get_capability (int endianness)
{ union
{ float f ;
int i ;
unsigned char c [4] ;
} data ;
data.f = 1.23456789 ; /* Some abitrary value. */
if (FORCE_BROKEN_FLOAT || data.i != 0x3f9e0652)
return (CPU_IS_LITTLE_ENDIAN) ? FLOAT_BROKEN_LE : FLOAT_BROKEN_BE ;
/* If this test is true ints and floats are compatible and little endian. */
if (data.c [0] == 0x52 && data.c [1] == 0x06 && data.c [2] == 0x9e && data.c [3] == 0x3f)
return FLOAT_CAN_RW_LE ;
/* If this test is true ints and floats are compatible and big endian. */
if (data.c [3] == 0x52 && data.c [2] == 0x06 && data.c [1] == 0x9e && data.c [0] == 0x3f)
return FLOAT_CAN_RW_BE ;
/* Floats are broken. Don't expect reading or writing to be fast. */
return 0 ;
} /* float32_get_capability */
/*----------------------------------------------------------------------------------------------
*/
static int
host_read_f2s (SF_PRIVATE *psf, short *ptr, int len)
{ unsigned int readcount, thisread ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
f2s_array ((float*) (psf->buffer), thisread / psf->bytewidth, ptr, index) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* host_read_f2s */
static int
host_read_f2i (SF_PRIVATE *psf, int *ptr, int len)
{ unsigned int readcount, thisread ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
f2i_array ((float*) (psf->buffer), thisread / psf->bytewidth, ptr, index) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* host_read_f2i */
static int
host_read_f (SF_PRIVATE *psf, float *ptr, int len)
{ unsigned int readcount, thisread ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
if (psf->fl32_endswap != SF_TRUE)
return fread (ptr, sizeof (float), len, psf->file) ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
memcpy (ptr + index, psf->buffer, thisread) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* host_read_f */
static int
host_read_f2d (SF_PRIVATE *psf, double *ptr, int len, int normalize)
{ unsigned int readcount, thisread ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
f2d_array ((float*) (psf->buffer), thisread / psf->bytewidth, ptr, index) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* host_read_f2d */
static int
host_write_s2f (SF_PRIVATE *psf, short *ptr, int len)
{ unsigned int writecount, thiswrite ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
s2f_array (ptr, index, (float*) (psf->buffer), writecount / psf->bytewidth) ;
float32_peak_update (psf, (float *) (psf->buffer), writecount / psf->bytewidth, index / psf->sf.channels) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* host_write_s2f */
static int
host_write_i2f (SF_PRIVATE *psf, int *ptr, int len)
{ unsigned int writecount, thiswrite ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
i2f_array (ptr, index, (float*) (psf->buffer), writecount / psf->bytewidth) ;
float32_peak_update (psf, (float *) (psf->buffer), writecount / psf->bytewidth, index / psf->sf.channels) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* host_write_i2f */
static int
host_write_f (SF_PRIVATE *psf, float *ptr, int len)
{ unsigned int writecount, thiswrite ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
float32_peak_update (psf, ptr, len, 0) ;
if (psf->fl32_endswap != SF_TRUE)
return fwrite (ptr, sizeof (float), len, psf->file) ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
memcpy (psf->buffer, ptr + index, writecount) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* host_write_f */
static int
host_write_d2f (SF_PRIVATE *psf, double *ptr, int len, int normalize)
{ unsigned int writecount, thiswrite ;
int bytecount, bufferlen ;
int index = 0, total = 0 ;
bufferlen = SF_BUFFER_LEN - (SF_BUFFER_LEN % psf->blockwidth) ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
d2f_array (ptr, index, (float*) (psf->buffer), writecount / psf->bytewidth) ;
float32_peak_update (psf, (float *) (psf->buffer), writecount / psf->bytewidth, index / psf->sf.channels) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* host_write_d2f */
/*=======================================================================================
*/
static void
f2s_array (float *buffer, unsigned int count, short *ptr, int index)
{ int k ;
for (k = 0 ; k < count ; k++)
{ ptr [index] = ((double) buffer [k]) ;
index ++ ;
} ;
} /* f2s_array */
static void
f2i_array (float *buffer, unsigned int count, int *ptr, int index)
{ int k ;
for (k = 0 ; k < count ; k++)
{ ptr [index] = (int) ((double) buffer [k]) ;
index ++ ;
} ;
} /* f2i_array */
static void
f2d_array (float *buffer, unsigned int count, double *ptr, int index)
{ int k ;
for (k = 0 ; k < count ; k++)
{ ptr [index] = ((double) buffer [k]) ;
index ++ ;
} ;
} /* f2d_array */
static void
s2f_array (short *ptr, int index, float *buffer, unsigned int count)
{ int k ;
for (k = 0 ; k < count ; k++)
{ buffer [k] = (float) (ptr [index]) ;
index ++ ;
} ;
} /* s2f_array */
static void
i2f_array (int *ptr, int index, float *buffer, unsigned int count)
{ int k ;
for (k = 0 ; k < count ; k++)
{ buffer [k] = (float) (ptr [index]) ;
index ++ ;
} ;
} /* i2f_array */
static void
d2f_array (double *ptr, int index, float *buffer, unsigned int count)
{ int k ;
for (k = 0 ; k < count ; k++)
{ buffer [k] = (float) (ptr [index]) ;
index ++ ;
} ;
} /* d2f_array */
/*=======================================================================================
*/
static int
broken_read_f2s (SF_PRIVATE *psf, short *ptr, int len)
{ unsigned int bytecount, readcount, bufferlen, thisread ;
int index = 0, total = 0 ;
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
bf2f_array ((float *) (psf->buffer), readcount / psf->bytewidth) ;
f2s_array ((float*) (psf->buffer), thisread / psf->bytewidth, ptr, index) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* broken_read_f2s */
static int
broken_read_f2i (SF_PRIVATE *psf, int *ptr, int len)
{ unsigned int bytecount, readcount, bufferlen, thisread ;
int index = 0, total = 0 ;
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
bf2f_array ((float *) (psf->buffer), readcount / psf->bytewidth) ;
f2i_array ((float*) (psf->buffer), thisread / psf->bytewidth, ptr, index) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* broken_read_f2i */
static int
broken_read_f (SF_PRIVATE *psf, float *ptr, int len)
{ unsigned int bytecount, readcount, bufferlen, thisread ;
int index = 0, total = 0 ;
/* FIX THIS */
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
bf2f_array ((float *) (psf->buffer), readcount / psf->bytewidth) ;
memcpy (ptr + index, psf->buffer, readcount) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* broken_read_f */
static int
broken_read_f2d (SF_PRIVATE *psf, double *ptr, int len, int normalize)
{ unsigned int bytecount, readcount, bufferlen, thisread ;
int index = 0, total = 0 ;
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ readcount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
thisread = fread (psf->buffer, 1, readcount, psf->file) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, readcount / sizeof (int)) ;
bf2f_array ((float *) (psf->buffer), readcount / psf->bytewidth) ;
f2d_array ((float*) (psf->buffer), thisread / psf->bytewidth, ptr, index) ;
total += thisread ;
if (thisread < readcount)
break ;
index += thisread / psf->bytewidth ;
bytecount -= thisread ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_READ ;
return total ;
} /* broken_read_f2d */
static int
broken_write_s2f (SF_PRIVATE *psf, short *ptr, int len)
{ unsigned int bytecount, writecount, bufferlen, thiswrite ;
int index = 0, total = 0 ;
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
s2f_array (ptr, index, (float*) (psf->buffer), writecount / psf->bytewidth) ;
float32_peak_update (psf, (float *) (psf->buffer), writecount / psf->bytewidth, index / psf->sf.channels) ;
f2bf_array ((float *) (psf->buffer), writecount / psf->bytewidth) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* broken_write_s2f */
static int
broken_write_i2f (SF_PRIVATE *psf, int *ptr, int len)
{ unsigned int bytecount, writecount, bufferlen, thiswrite ;
int index = 0, total = 0 ;
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
i2f_array (ptr, index, (float*) (psf->buffer), writecount / psf->bytewidth) ;
float32_peak_update (psf, (float *) (psf->buffer), writecount / psf->bytewidth, index / psf->sf.channels) ;
f2bf_array ((float *) (psf->buffer), writecount / psf->bytewidth) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* broken_write_i2f */
static int
broken_write_f (SF_PRIVATE *psf, float *ptr, int len)
{ unsigned int bytecount, writecount, bufferlen, thiswrite ;
int index = 0, total = 0 ;
/* FIX THIS */
float32_peak_update (psf, ptr, len, 0) ;
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
memcpy (psf->buffer, ptr + index, writecount) ;
f2bf_array ((float *) (psf->buffer), writecount / psf->bytewidth) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* broken_write_f */
static int
broken_write_d2f (SF_PRIVATE *psf, double *ptr, int len, int normalize)
{ unsigned int bytecount, writecount, bufferlen, thiswrite ;
int index = 0, total = 0 ;
bufferlen = (SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth ;
bytecount = len * psf->bytewidth ;
while (bytecount > 0)
{ writecount = (bytecount >= bufferlen) ? bufferlen : bytecount ;
d2f_array (ptr, index, (float*) (psf->buffer), writecount / psf->bytewidth) ;
float32_peak_update (psf, (float *) (psf->buffer), writecount / psf->bytewidth, index / psf->sf.channels) ;
f2bf_array ((float *) (psf->buffer), writecount / psf->bytewidth) ;
if (psf->fl32_endswap == SF_TRUE)
endswap_int_array ((int*) psf->buffer, writecount / sizeof (int)) ;
thiswrite = fwrite (psf->buffer, 1, writecount, psf->file) ;
total += thiswrite ;
if (thiswrite < writecount)
break ;
index += thiswrite / psf->bytewidth ;
bytecount -= thiswrite ;
} ;
total /= psf->bytewidth ;
if (total < len)
psf->error = SFE_SHORT_WRITE ;
return total ;
} /* broken_write_d2f */
/*==============================================================================
*/
/*----------------------------------------------------------------------------------------------
*/
static void
bf2f_array (float *buffer, unsigned int count)
{ int k ;
for (k = 0 ; k < count ; k++)
buffer [k] = float32_read ((unsigned char *) (buffer + k)) ;
} /* bf2f_array */
static void
f2bf_array (float *buffer, unsigned int count)
{ int k ;
for (k = 0 ; k < count ; k++)
float32_write (buffer [k], (unsigned char*) (buffer + k)) ;
} /* f2bf_array */