diff options
Diffstat (limited to 'gst-libs/gst/resample/dtos.c')
| -rw-r--r-- | gst-libs/gst/resample/dtos.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/gst-libs/gst/resample/dtos.c b/gst-libs/gst/resample/dtos.c deleted file mode 100644 index f1e2278e..00000000 --- a/gst-libs/gst/resample/dtos.c +++ /dev/null @@ -1,217 +0,0 @@ -/* Resampling library - * Copyright (C) <2001> David A. Schleef <ds@schleef.org> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or any later version. - * - * This library 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <string.h> -#include <math.h> -#include <stdio.h> -#include <stdlib.h> - -/*#include <ml.h> */ -#include <resample.h> - - - -#define short_to_double_table -/*#define short_to_double_altivec */ -#define short_to_double_unroll - -#ifdef short_to_double_table -static float ints_high[256]; -static float ints_low[256]; - -void -conv_double_short_table (double *dest, short *src, int n) -{ - static int init = 0; - int i; - unsigned int idx; - - if (!init) { - for (i = 0; i < 256; i++) { - ints_high[i] = 256.0 * ((i < 128) ? i : i - 256); - ints_low[i] = i; - } - init = 1; - } - - if (n & 1) { - idx = (unsigned short) *src++; - *dest++ = ints_high[(idx >> 8)] + ints_low[(idx & 0xff)]; - n -= 1; - } - for (i = 0; i < n; i += 2) { - idx = (unsigned short) *src++; - *dest++ = ints_high[(idx >> 8)] + ints_low[(idx & 0xff)]; - idx = (unsigned short) *src++; - *dest++ = ints_high[(idx >> 8)] + ints_low[(idx & 0xff)]; - } -} - -#endif - -#ifdef short_to_double_unroll -void -conv_double_short_unroll (double *dest, short *src, int n) -{ - if (n & 1) { - *dest++ = *src++; - n--; - } - if (n & 2) { - *dest++ = *src++; - *dest++ = *src++; - n -= 2; - } - while (n > 0) { - *dest++ = *src++; - *dest++ = *src++; - *dest++ = *src++; - *dest++ = *src++; - n -= 4; - } -} -#endif - -void -conv_double_short_ref (double *dest, short *src, int n) -{ - int i; - - for (i = 0; i < n; i++) { - dest[i] = src[i]; - } -} - -#ifdef HAVE_CPU_PPC -#if 0 -static union -{ - int i[4]; - float f[4]; -} -av_tmp __attribute__ ((__aligned__ (16))); - -void -conv_double_short_altivec (double *dest, short *src, int n) -{ - int i; - - for (i = 0; i < n; i += 4) { - av_tmp.i[0] = src[0]; - av_tmp.i[1] = src[1]; - av_tmp.i[2] = src[2]; - av_tmp.i[3] = src[3]; - - asm (" lvx 0,0,%0\n" " vcfsx 1,0,0\n" " stvx 1,0,%0\n": :"r" (&av_tmp) - ); - - dest[0] = av_tmp.f[0]; - dest[1] = av_tmp.f[1]; - dest[2] = av_tmp.f[2]; - dest[3] = av_tmp.f[3]; - src += 4; - dest += 4; - } -} -#endif -#endif - - - -/* double to short */ - -void -conv_short_double_ref (short *dest, double *src, int n) -{ - int i; - double x; - - for (i = 0; i < n; i++) { - x = *src++; - if (x < -32768.0) - x = -32768.0; - if (x > 32767.0) - x = 32767.0; - *dest++ = rint (x); - } -} - -/* #ifdef HAVE_CPU_PPC */ -#if 0 -void -conv_short_double_ppcasm (short *dest, double *src, int n) -{ - int tmp[2]; - double min = -32768.0; - double max = 32767.0; - double ftmp0, ftmp1; - - asm __volatile__ ("\taddic. %3,%3,-8\n" - "\taddic. %6,%6,-2\n" - "loop:\n" - "\tlfdu %0,8(%3)\n" - "\tfsub %1,%0,%4\n" - "\tfsel %0,%1,%0,%4\n" - "\tfsub %1,%0,%5\n" - "\tfsel %0,%1,%5,%0\n" - "\tfctiw %1,%0\n" - "\taddic. 5,5,-1\n" - "\tstfd %1,0(%2)\n" - "\tlhz 9,6(%2)\n" - "\tsthu 9,2(%6)\n" "\tbne loop\n":"=&f" (ftmp0), "=&f" (ftmp1) - :"b" (tmp), "r" (src), "f" (min), "f" (max), "r" (dest) - :"r9", "r5"); - -} -#endif - - -void -conv_double_short_dstr (double *dest, short *src, int n, int dstr) -{ - int i; - void *d = dest; - - for (i = 0; i < n; i++) { - (*(double *) d) = *src++; - d += dstr; - } -} - -void -conv_short_double_sstr (short *dest, double *src, int n, int sstr) -{ - int i; - double x; - void *s = src; - - for (i = 0; i < n; i++) { - x = *(double *) s; - if (x < -32768.0) - x = -32768.0; - if (x > 32767.0) - x = 32767.0; - *dest++ = rint (x); - s += sstr; - } -} |