float_dsp.c
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
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10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with Libav; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "config.h"
20 
21 #include "float_dsp.h"
22 
23 static void vector_fmul_c(float *dst, const float *src0, const float *src1,
24  int len)
25 {
26  int i;
27  for (i = 0; i < len; i++)
28  dst[i] = src0[i] * src1[i];
29 }
30 
31 static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
32  int len)
33 {
34  int i;
35  for (i = 0; i < len; i++)
36  dst[i] += src[i] * mul;
37 }
38 
39 static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
40  int len)
41 {
42  int i;
43  for (i = 0; i < len; i++)
44  dst[i] = src[i] * mul;
45 }
46 
47 static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
48  int len)
49 {
50  int i;
51  for (i = 0; i < len; i++)
52  dst[i] = src[i] * mul;
53 }
54 
55 void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
56 {
57  fdsp->vector_fmul = vector_fmul_c;
61 
62 #if ARCH_ARM
64 #elif ARCH_PPC
65  ff_float_dsp_init_ppc(fdsp, bit_exact);
66 #elif ARCH_X86
68 #endif
69 }
void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
static void vector_fmul_scalar_c(float *dst, const float *src, float mul, int len)
Definition: float_dsp.c:39
void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp)
void(* vector_fmac_scalar)(float *dst, const float *src, float mul, int len)
Multiply a vector of floats by a scalar float and add to destination vector.
Definition: float_dsp.h:52
void(* vector_fmul)(float *dst, const float *src0, const float *src1, int len)
Calculate the product of two vectors of floats and store the result in a vector of floats...
Definition: float_dsp.h:36
void(* vector_dmul_scalar)(double *dst, const double *src, double mul, int len)
Multiply a vector of double by a scalar double.
Definition: float_dsp.h:82
static void vector_dmul_scalar_c(double *dst, const double *src, double mul, int len)
Definition: float_dsp.c:47
void(* vector_fmul_scalar)(float *dst, const float *src, float mul, int len)
Multiply a vector of floats by a scalar float.
Definition: float_dsp.h:67
void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int strict)
static void vector_fmul_c(float *dst, const float *src0, const float *src1, int len)
Definition: float_dsp.c:23
static void vector_fmac_scalar_c(float *dst, const float *src, float mul, int len)
Definition: float_dsp.c:31
int len
void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
Initialize a float DSP context.
Definition: float_dsp.c:55