FFmpeg  4.0
resample_init.c
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1 /*
2  * audio resampling
3  * Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * audio resampling
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #include "libavutil/x86/cpu.h"
29 #include "libswresample/resample.h"
30 
31 #define RESAMPLE_FUNCS(type, opt) \
32 int ff_resample_common_##type##_##opt(ResampleContext *c, void *dst, \
33  const void *src, int sz, int upd); \
34 int ff_resample_linear_##type##_##opt(ResampleContext *c, void *dst, \
35  const void *src, int sz, int upd)
36 
37 RESAMPLE_FUNCS(int16, mmxext);
38 RESAMPLE_FUNCS(int16, sse2);
39 RESAMPLE_FUNCS(int16, xop);
40 RESAMPLE_FUNCS(float, sse);
41 RESAMPLE_FUNCS(float, avx);
42 RESAMPLE_FUNCS(float, fma3);
43 RESAMPLE_FUNCS(float, fma4);
44 RESAMPLE_FUNCS(double, sse2);
45 RESAMPLE_FUNCS(double, avx);
46 RESAMPLE_FUNCS(double, fma3);
47 
49 {
50  int av_unused mm_flags = av_get_cpu_flags();
51 
52  switch(c->format){
53  case AV_SAMPLE_FMT_S16P:
54  if (ARCH_X86_32 && EXTERNAL_MMXEXT(mm_flags)) {
55  c->dsp.resample_linear = ff_resample_linear_int16_mmxext;
56  c->dsp.resample_common = ff_resample_common_int16_mmxext;
57  }
58  if (EXTERNAL_SSE2(mm_flags)) {
59  c->dsp.resample_linear = ff_resample_linear_int16_sse2;
60  c->dsp.resample_common = ff_resample_common_int16_sse2;
61  }
62  if (EXTERNAL_XOP(mm_flags)) {
63  c->dsp.resample_linear = ff_resample_linear_int16_xop;
64  c->dsp.resample_common = ff_resample_common_int16_xop;
65  }
66  break;
67  case AV_SAMPLE_FMT_FLTP:
68  if (EXTERNAL_SSE(mm_flags)) {
69  c->dsp.resample_linear = ff_resample_linear_float_sse;
70  c->dsp.resample_common = ff_resample_common_float_sse;
71  }
72  if (EXTERNAL_AVX_FAST(mm_flags)) {
73  c->dsp.resample_linear = ff_resample_linear_float_avx;
74  c->dsp.resample_common = ff_resample_common_float_avx;
75  }
76  if (EXTERNAL_FMA3_FAST(mm_flags)) {
77  c->dsp.resample_linear = ff_resample_linear_float_fma3;
78  c->dsp.resample_common = ff_resample_common_float_fma3;
79  }
80  if (EXTERNAL_FMA4(mm_flags)) {
81  c->dsp.resample_linear = ff_resample_linear_float_fma4;
82  c->dsp.resample_common = ff_resample_common_float_fma4;
83  }
84  break;
85  case AV_SAMPLE_FMT_DBLP:
86  if (EXTERNAL_SSE2(mm_flags)) {
87  c->dsp.resample_linear = ff_resample_linear_double_sse2;
88  c->dsp.resample_common = ff_resample_common_double_sse2;
89  }
90  if (EXTERNAL_AVX_FAST(mm_flags)) {
91  c->dsp.resample_linear = ff_resample_linear_double_avx;
92  c->dsp.resample_common = ff_resample_common_double_avx;
93  }
94  if (EXTERNAL_FMA3_FAST(mm_flags)) {
95  c->dsp.resample_linear = ff_resample_linear_double_fma3;
96  c->dsp.resample_common = ff_resample_common_double_fma3;
97  }
98  break;
99  }
100 }
float, planar
Definition: samplefmt.h:69
double, planar
Definition: samplefmt.h:70
static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride)
#define EXTERNAL_SSE(flags)
Definition: cpu.h:58
enum AVSampleFormat format
Definition: resample.h:48
#define av_cold
Definition: attributes.h:82
#define EXTERNAL_AVX_FAST(flags)
Definition: cpu.h:71
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
#define EXTERNAL_FMA4(flags)
Definition: cpu.h:77
av_cold void swri_resample_dsp_x86_init(ResampleContext *c)
Definition: resample_init.c:48
struct ResampleContext::@267 dsp
int(* resample_common)(struct ResampleContext *c, void *dst, const void *src, int n, int update_ctx)
Definition: resample.h:56
#define ARCH_X86_32
Definition: config.h:39
#define EXTERNAL_FMA3_FAST(flags)
Definition: cpu.h:75
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:93
int(* resample_linear)(struct ResampleContext *c, void *dst, const void *src, int n, int update_ctx)
Definition: resample.h:58
#define EXTERNAL_MMXEXT(flags)
Definition: cpu.h:57
static double c[64]
#define EXTERNAL_XOP(flags)
Definition: cpu.h:73
signed 16 bits, planar
Definition: samplefmt.h:67
#define RESAMPLE_FUNCS(type, opt)
Definition: resample_init.c:31
#define av_unused
Definition: attributes.h:125