FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
lossless_audiodsp_init.c
Go to the documentation of this file.
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg 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  *
9  * FFmpeg is distributed in the hope that it will be useful,
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 FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "libavutil/attributes.h"
20 #include "libavutil/cpu.h"
21 #include "libavutil/x86/cpu.h"
23 
24 int32_t ff_scalarproduct_and_madd_int16_mmxext(int16_t *v1, const int16_t *v2,
25  const int16_t *v3,
26  int order, int mul);
27 int32_t ff_scalarproduct_and_madd_int16_sse2(int16_t *v1, const int16_t *v2,
28  const int16_t *v3,
29  int order, int mul);
30 int32_t ff_scalarproduct_and_madd_int16_ssse3(int16_t *v1, const int16_t *v2,
31  const int16_t *v3,
32  int order, int mul);
33 
35 {
36 #if HAVE_YASM
37  int cpu_flags = av_get_cpu_flags();
38 
39  if (EXTERNAL_MMXEXT(cpu_flags))
41 
42  if (EXTERNAL_SSE2(cpu_flags))
44 
45  if (EXTERNAL_SSSE3(cpu_flags) &&
46  !(cpu_flags & (AV_CPU_FLAG_SSE42 | AV_CPU_FLAG_3DNOW))) // cachesplit
48 #endif
49 }
int32_t ff_scalarproduct_and_madd_int16_sse2(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:74
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:56
#define AV_CPU_FLAG_SSE42
Nehalem SSE4.2 functions.
Definition: cpu.h:44
int32_t
int32_t ff_scalarproduct_and_madd_int16_ssse3(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
#define AV_CPU_FLAG_3DNOW
AMD 3DNOW.
Definition: cpu.h:32
int32_t ff_scalarproduct_and_madd_int16_mmxext(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
#define EXTERNAL_SSSE3(flags)
Definition: cpu.h:62
int32_t(* scalarproduct_and_madd_int16)(int16_t *v1, const int16_t *v2, const int16_t *v3, int len, int mul)
Calculate scalar product of v1 and v2, and v1[i] += v3[i] * mul.
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
av_cold void ff_llauddsp_init_x86(LLAudDSPContext *c)
#define EXTERNAL_MMXEXT(flags)
Definition: cpu.h:54
static double c[64]