diff options
Diffstat (limited to 'libs/libsndfile/src/float32.c')
| -rw-r--r-- | libs/libsndfile/src/float32.c | 961 |
1 files changed, 0 insertions, 961 deletions
diff --git a/libs/libsndfile/src/float32.c b/libs/libsndfile/src/float32.c deleted file mode 100644 index b376e60f7d..0000000000 --- a/libs/libsndfile/src/float32.c +++ /dev/null @@ -1,961 +0,0 @@ -/* -** Copyright (C) 1999-2005 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 "sndfile.h" -#include "sfendian.h" -#include "common.h" -#include "float_cast.h" - -#if CPU_IS_LITTLE_ENDIAN - #define FLOAT32_READ float32_le_read - #define FLOAT32_WRITE float32_le_write -#elif CPU_IS_BIG_ENDIAN - #define FLOAT32_READ float32_be_read - #define FLOAT32_WRITE float32_be_write -#endif - -/*-------------------------------------------------------------------------------------------- -** Processor floating point capabilities. float32_get_capability () returns one of the -** latter four values. -*/ - -enum -{ FLOAT_UNKNOWN = 0x00, - FLOAT_CAN_RW_LE = 0x12, - FLOAT_CAN_RW_BE = 0x23, - FLOAT_BROKEN_LE = 0x34, - FLOAT_BROKEN_BE = 0x45 -} ; - -/*-------------------------------------------------------------------------------------------- -** Prototypes for private functions. -*/ - -static sf_count_t host_read_f2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; -static sf_count_t host_read_f2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; -static sf_count_t host_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; -static sf_count_t host_read_f2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; - -static sf_count_t host_write_s2f (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; -static sf_count_t host_write_i2f (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; -static sf_count_t host_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; -static sf_count_t host_write_d2f (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; - -static void float32_peak_update (SF_PRIVATE *psf, const float *buffer, int count, sf_count_t indx) ; - -static sf_count_t replace_read_f2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; -static sf_count_t replace_read_f2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; -static sf_count_t replace_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; -static sf_count_t replace_read_f2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; - -static sf_count_t replace_write_s2f (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; -static sf_count_t replace_write_i2f (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; -static sf_count_t replace_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; -static sf_count_t replace_write_d2f (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; - -static void bf2f_array (float *buffer, int count) ; -static void f2bf_array (float *buffer, int count) ; - -static int float32_get_capability (SF_PRIVATE *psf) ; - -/*-------------------------------------------------------------------------------------------- -** Exported functions. -*/ - -int -float32_init (SF_PRIVATE *psf) -{ static int float_caps ; - - float_caps = float32_get_capability (psf) ; - - psf->blockwidth = sizeof (float) * psf->sf.channels ; - - if (psf->mode == SFM_READ || psf->mode == SFM_RDWR) - { switch (psf->endian + float_caps) - { case (SF_ENDIAN_BIG + FLOAT_CAN_RW_BE) : - psf->float_endswap = SF_FALSE ; - psf->read_short = host_read_f2s ; - psf->read_int = host_read_f2i ; - psf->read_float = host_read_f ; - psf->read_double = host_read_f2d ; - break ; - - case (SF_ENDIAN_LITTLE + FLOAT_CAN_RW_LE) : - psf->float_endswap = SF_FALSE ; - psf->read_short = host_read_f2s ; - psf->read_int = host_read_f2i ; - psf->read_float = host_read_f ; - psf->read_double = host_read_f2d ; - break ; - - case (SF_ENDIAN_BIG + FLOAT_CAN_RW_LE) : - psf->float_endswap = SF_TRUE ; - psf->read_short = host_read_f2s ; - psf->read_int = host_read_f2i ; - psf->read_float = host_read_f ; - psf->read_double = host_read_f2d ; - break ; - - case (SF_ENDIAN_LITTLE + FLOAT_CAN_RW_BE) : - psf->float_endswap = SF_TRUE ; - psf->read_short = host_read_f2s ; - psf->read_int = host_read_f2i ; - psf->read_float = host_read_f ; - psf->read_double = host_read_f2d ; - break ; - - /* When the CPU is not IEEE compatible. */ - case (SF_ENDIAN_BIG + FLOAT_BROKEN_LE) : - psf->float_endswap = SF_TRUE ; - psf->read_short = replace_read_f2s ; - psf->read_int = replace_read_f2i ; - psf->read_float = replace_read_f ; - psf->read_double = replace_read_f2d ; - break ; - - case (SF_ENDIAN_LITTLE + FLOAT_BROKEN_LE) : - psf->float_endswap = SF_FALSE ; - psf->read_short = replace_read_f2s ; - psf->read_int = replace_read_f2i ; - psf->read_float = replace_read_f ; - psf->read_double = replace_read_f2d ; - break ; - - case (SF_ENDIAN_BIG + FLOAT_BROKEN_BE) : - psf->float_endswap = SF_FALSE ; - psf->read_short = replace_read_f2s ; - psf->read_int = replace_read_f2i ; - psf->read_float = replace_read_f ; - psf->read_double = replace_read_f2d ; - break ; - - case (SF_ENDIAN_LITTLE + FLOAT_BROKEN_BE) : - psf->float_endswap = SF_TRUE ; - psf->read_short = replace_read_f2s ; - psf->read_int = replace_read_f2i ; - psf->read_float = replace_read_f ; - psf->read_double = replace_read_f2d ; - break ; - - default : break ; - } ; - } ; - - if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR) - { switch (psf->endian + float_caps) - { case (SF_ENDIAN_LITTLE + FLOAT_CAN_RW_LE) : - psf->float_endswap = SF_FALSE ; - psf->write_short = host_write_s2f ; - psf->write_int = host_write_i2f ; - psf->write_float = host_write_f ; - psf->write_double = host_write_d2f ; - break ; - - case (SF_ENDIAN_BIG + FLOAT_CAN_RW_BE) : - psf->float_endswap = SF_FALSE ; - psf->write_short = host_write_s2f ; - psf->write_int = host_write_i2f ; - psf->write_float = host_write_f ; - psf->write_double = host_write_d2f ; - break ; - - case (SF_ENDIAN_BIG + FLOAT_CAN_RW_LE) : - psf->float_endswap = SF_TRUE ; - psf->write_short = host_write_s2f ; - psf->write_int = host_write_i2f ; - psf->write_float = host_write_f ; - psf->write_double = host_write_d2f ; - break ; - - case (SF_ENDIAN_LITTLE + FLOAT_CAN_RW_BE) : - psf->float_endswap = SF_TRUE ; - psf->write_short = host_write_s2f ; - psf->write_int = host_write_i2f ; - psf->write_float = host_write_f ; - psf->write_double = host_write_d2f ; - break ; - - /* When the CPU is not IEEE compatible. */ - case (SF_ENDIAN_BIG + FLOAT_BROKEN_LE) : - psf->float_endswap = SF_TRUE ; - psf->write_short = replace_write_s2f ; - psf->write_int = replace_write_i2f ; - psf->write_float = replace_write_f ; - psf->write_double = replace_write_d2f ; - break ; - - case (SF_ENDIAN_LITTLE + FLOAT_BROKEN_LE) : - psf->float_endswap = SF_FALSE ; - psf->write_short = replace_write_s2f ; - psf->write_int = replace_write_i2f ; - psf->write_float = replace_write_f ; - psf->write_double = replace_write_d2f ; - break ; - - case (SF_ENDIAN_BIG + FLOAT_BROKEN_BE) : - psf->float_endswap = SF_FALSE ; - psf->write_short = replace_write_s2f ; - psf->write_int = replace_write_i2f ; - psf->write_float = replace_write_f ; - psf->write_double = replace_write_d2f ; - break ; - - case (SF_ENDIAN_LITTLE + FLOAT_BROKEN_BE) : - psf->float_endswap = SF_TRUE ; - psf->write_short = replace_write_s2f ; - psf->write_int = replace_write_i2f ; - psf->write_float = replace_write_f ; - psf->write_double = replace_write_d2f ; - 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 ; -} /* float32_init */ - -float -float32_be_read (unsigned char *cptr) -{ int exponent, mantissa, negative ; - float fvalue ; - - 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_be_read */ - -float -float32_le_read (unsigned char *cptr) -{ int exponent, mantissa, negative ; - float fvalue ; - - negative = cptr [3] & 0x80 ; - exponent = ((cptr [3] & 0x7F) << 1) | ((cptr [2] & 0x80) ? 1 : 0) ; - mantissa = ((cptr [2] & 0x7F) << 16) | (cptr [1] << 8) | (cptr [0]) ; - - 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_le_read */ - -void -float32_le_write (float in, unsigned char *out) -{ int exponent, mantissa, negative = 0 ; - - memset (out, 0, sizeof (int)) ; - - if (fabs (in) < 1e-30) - return ; - - if (in < 0.0) - { in *= -1.0 ; - negative = 1 ; - } ; - - in = frexp (in, &exponent) ; - - exponent += 126 ; - - in *= (float) 0x1000000 ; - mantissa = (((int) in) & 0x7FFFFF) ; - - 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 ; - - return ; -} /* float32_le_write */ - -void -float32_be_write (float in, unsigned char *out) -{ int exponent, mantissa, negative = 0 ; - - memset (out, 0, sizeof (int)) ; - - if (fabs (in) < 1e-30) - return ; - - if (in < 0.0) - { in *= -1.0 ; - negative = 1 ; - } ; - - in = frexp (in, &exponent) ; - - exponent += 126 ; - - in *= (float) 0x1000000 ; - mantissa = (((int) in) & 0x7FFFFF) ; - - 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_be_write */ - -/*============================================================================================== -** Private functions. -*/ - -static void -float32_peak_update (SF_PRIVATE *psf, const float *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 ; -} /* float32_peak_update */ - -static int -float32_get_capability (SF_PRIVATE *psf) -{ union - { float f ; - int i ; - unsigned char c [4] ; - } data ; - - data.f = (float) 1.23456789 ; /* Some abitrary value. */ - - if (! psf->ieee_replace) - { /* 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. */ - psf_log_printf (psf, "Using IEEE replacement code for float.\n") ; - - return (CPU_IS_LITTLE_ENDIAN) ? FLOAT_BROKEN_LE : FLOAT_BROKEN_BE ; -} /* float32_get_capability */ - -/*======================================================================================= -*/ - -static inline void -f2s_array (const float *src, int count, short *dest, float scale) -{ while (--count >= 0) - { dest [count] = lrintf (scale * src [count]) ; - } ; -} /* f2s_array */ - -static inline void -f2i_array (const float *src, int count, int *dest, float scale) -{ while (--count >= 0) - { dest [count] = lrintf (scale * src [count]) ; - } ; -} /* f2i_array */ - -static inline void -f2d_array (const float *src, int count, double *dest) -{ while (--count >= 0) - { dest [count] = src [count] ; - } ; -} /* f2d_array */ - -static inline void -s2f_array (const short *src, float *dest, int count) -{ while (--count >= 0) - { dest [count] = src [count] ; - } ; - -} /* s2f_array */ - -static inline void -i2f_array (const int *src, float *dest, int count) -{ while (--count >= 0) - { dest [count] = src [count] ; - } ; -} /* i2f_array */ - -static inline void -d2f_array (const double *src, float *dest, int count) -{ while (--count >= 0) - { dest [count] = src [count] ; - } ; -} /* d2f_array */ - -/*---------------------------------------------------------------------------------------------- -*/ - -static sf_count_t -host_read_f2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - float scale ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - 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.fbuf, sizeof (float), bufferlen, psf) ; - -/* Fix me : Need lef2s_array */ - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - f2s_array (psf->u.fbuf, readcount, ptr + total, scale) ; - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* host_read_f2s */ - -static sf_count_t -host_read_f2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - float scale ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - 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.fbuf, sizeof (float), bufferlen, psf) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - f2i_array (psf->u.fbuf, readcount, ptr + total, scale) ; - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* host_read_f2i */ - -static sf_count_t -host_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - - if (psf->float_endswap != SF_TRUE) - return psf_fread (ptr, sizeof (float), len, psf) ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - readcount = psf_fread (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - - endswap_int_copy ((int*) (ptr + total), psf->u.ibuf, readcount) ; - - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* host_read_f */ - -static sf_count_t -host_read_f2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - readcount = psf_fread (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - -/* Fix me : Need lef2d_array */ - f2d_array (psf->u.fbuf, readcount, ptr + total) ; - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* host_read_f2d */ - -static sf_count_t -host_write_s2f (SF_PRIVATE *psf, const short *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - s2f_array (ptr + total, psf->u.fbuf, bufferlen) ; - - if (psf->peak_info) - float32_peak_update (psf, psf->u.fbuf, bufferlen, total / psf->sf.channels) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* host_write_s2f */ - -static sf_count_t -host_write_i2f (SF_PRIVATE *psf, const int *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - i2f_array (ptr + total, psf->u.fbuf, bufferlen) ; - - if (psf->peak_info) - float32_peak_update (psf, psf->u.fbuf, bufferlen, total / psf->sf.channels) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float) , bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* host_write_i2f */ - -static sf_count_t -host_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - if (psf->peak_info) - float32_peak_update (psf, ptr, len, 0) ; - - if (psf->float_endswap != SF_TRUE) - return psf_fwrite (ptr, sizeof (float), len, psf) ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - - endswap_int_copy (psf->u.ibuf, (const int*) (ptr + total), bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* host_write_f */ - -static sf_count_t -host_write_d2f (SF_PRIVATE *psf, const double *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - - d2f_array (ptr + total, psf->u.fbuf, bufferlen) ; - - if (psf->peak_info) - float32_peak_update (psf, psf->u.fbuf, bufferlen, total / psf->sf.channels) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* host_write_d2f */ - -/*======================================================================================= -*/ - -static sf_count_t -replace_read_f2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - float scale ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - 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.fbuf, sizeof (float), bufferlen, psf) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - bf2f_array (psf->u.fbuf, bufferlen) ; - - f2s_array (psf->u.fbuf, readcount, ptr + total, scale) ; - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* replace_read_f2s */ - -static sf_count_t -replace_read_f2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - float scale ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - 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.fbuf, sizeof (float), bufferlen, psf) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - bf2f_array (psf->u.fbuf, bufferlen) ; - - f2i_array (psf->u.fbuf, readcount, ptr + total, scale) ; - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* replace_read_f2i */ - -static sf_count_t -replace_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - - /* FIX THIS */ - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - readcount = psf_fread (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - bf2f_array (psf->u.fbuf, bufferlen) ; - - memcpy (ptr + total, psf->u.fbuf, bufferlen * sizeof (float)) ; - - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* replace_read_f */ - -static sf_count_t -replace_read_f2d (SF_PRIVATE *psf, double *ptr, sf_count_t len) -{ int bufferlen, readcount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - readcount = psf_fread (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - bf2f_array (psf->u.fbuf, bufferlen) ; - - f2d_array (psf->u.fbuf, readcount, ptr + total) ; - total += readcount ; - if (readcount < bufferlen) - break ; - len -= readcount ; - } ; - - return total ; -} /* replace_read_f2d */ - -static sf_count_t -replace_write_s2f (SF_PRIVATE *psf, const short *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - s2f_array (ptr + total, psf->u.fbuf, bufferlen) ; - - if (psf->peak_info) - float32_peak_update (psf, psf->u.fbuf, bufferlen, total / psf->sf.channels) ; - - f2bf_array (psf->u.fbuf, bufferlen) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* replace_write_s2f */ - -static sf_count_t -replace_write_i2f (SF_PRIVATE *psf, const int *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - i2f_array (ptr + total, psf->u.fbuf, bufferlen) ; - - if (psf->peak_info) - float32_peak_update (psf, psf->u.fbuf, bufferlen, total / psf->sf.channels) ; - - f2bf_array (psf->u.fbuf, bufferlen) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* replace_write_i2f */ - -static sf_count_t -replace_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - /* FIX THIS */ - if (psf->peak_info) - float32_peak_update (psf, ptr, len, 0) ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - - memcpy (psf->u.fbuf, ptr + total, bufferlen * sizeof (float)) ; - - f2bf_array (psf->u.fbuf, bufferlen) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float) , bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* replace_write_f */ - -static sf_count_t -replace_write_d2f (SF_PRIVATE *psf, const double *ptr, sf_count_t len) -{ int bufferlen, writecount ; - sf_count_t total = 0 ; - - bufferlen = ARRAY_LEN (psf->u.fbuf) ; - - while (len > 0) - { if (len < bufferlen) - bufferlen = (int) len ; - d2f_array (ptr + total, psf->u.fbuf, bufferlen) ; - - if (psf->peak_info) - float32_peak_update (psf, psf->u.fbuf, bufferlen, total / psf->sf.channels) ; - - f2bf_array (psf->u.fbuf, bufferlen) ; - - if (psf->float_endswap == SF_TRUE) - endswap_int_array (psf->u.ibuf, bufferlen) ; - - writecount = psf_fwrite (psf->u.fbuf, sizeof (float), bufferlen, psf) ; - total += writecount ; - if (writecount < bufferlen) - break ; - len -= writecount ; - } ; - - return total ; -} /* replace_write_d2f */ - -/*---------------------------------------------------------------------------------------------- -*/ - -static void -bf2f_array (float *buffer, int count) -{ while (--count >= 0) - { buffer [count] = FLOAT32_READ ((unsigned char *) (buffer + count)) ; - } ; -} /* bf2f_array */ - -static void -f2bf_array (float *buffer, int count) -{ while (--count >= 0) - { FLOAT32_WRITE (buffer [count], (unsigned char*) (buffer + count)) ; - } ; -} /* f2bf_array */ - -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: b6c34917-488c-4145-9648-f4371fc4c889 -*/ |