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/* |
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* Copyright 2005 Balatoni Denes
* Copyright 2006 Loren Merritt |
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* |
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* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
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* 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.
* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* 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 |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h" |
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#include "attributes.h" |
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#include "float_dsp.h"
static void vector_fmul_c(float *dst, const float *src0, const float *src1,
int len)
{
int i;
for (i = 0; i < len; i++)
dst[i] = src0[i] * src1[i];
}
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static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
int len)
{
int i;
for (i = 0; i < len; i++)
dst[i] += src[i] * mul;
}
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static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
int len)
{
int i;
for (i = 0; i < len; i++)
dst[i] = src[i] * mul;
}
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static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
int len)
{
int i;
for (i = 0; i < len; i++)
dst[i] = src[i] * mul;
}
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static void vector_fmul_window_c(float *dst, const float *src0,
const float *src1, const float *win, int len)
{
int i, j;
dst += len;
win += len;
src0 += len;
for (i = -len, j = len - 1; i < 0; i++, j--) {
float s0 = src0[i];
float s1 = src1[j];
float wi = win[i];
float wj = win[j];
dst[i] = s0 * wj - s1 * wi;
dst[j] = s0 * wi + s1 * wj;
}
}
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static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
const float *src2, int len){
int i;
for (i = 0; i < len; i++)
dst[i] = src0[i] * src1[i] + src2[i];
}
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static void vector_fmul_reverse_c(float *dst, const float *src0,
const float *src1, int len)
{
int i;
src1 += len-1;
for (i = 0; i < len; i++)
dst[i] = src0[i] * src1[-i];
}
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static void butterflies_float_c(float *av_restrict v1, float *av_restrict v2, |
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int len)
{
int i;
for (i = 0; i < len; i++) {
float t = v1[i] - v2[i];
v1[i] += v2[i];
v2[i] = t;
}
}
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float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
{
float p = 0.0;
int i;
for (i = 0; i < len; i++)
p += v1[i] * v2[i];
return p;
}
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av_cold void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact) |
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{
fdsp->vector_fmul = vector_fmul_c; |
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fdsp->vector_fmac_scalar = vector_fmac_scalar_c; |
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fdsp->vector_fmul_scalar = vector_fmul_scalar_c; |
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fdsp->vector_dmul_scalar = vector_dmul_scalar_c; |
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fdsp->vector_fmul_window = vector_fmul_window_c; |
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fdsp->vector_fmul_add = vector_fmul_add_c; |
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fdsp->vector_fmul_reverse = vector_fmul_reverse_c; |
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fdsp->butterflies_float = butterflies_float_c; |
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fdsp->scalarproduct_float = avpriv_scalarproduct_float_c; |
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#if ARCH_ARM
ff_float_dsp_init_arm(fdsp);
#elif ARCH_PPC
ff_float_dsp_init_ppc(fdsp, bit_exact);
#elif ARCH_X86
ff_float_dsp_init_x86(fdsp); |
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#elif ARCH_MIPS
ff_float_dsp_init_mips(fdsp); |
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#endif
} |