FFmpeg
synth_filter_init.c
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1 /*
2  * Copyright (c) 2012-2014 Christophe Gisquet <christophe.gisquet@gmail.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/attributes.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/cpu.h"
25 
26 #define SYNTH_FILTER_FUNC(opt) \
27 void ff_synth_filter_inner_##opt(float *synth_buf_ptr, float synth_buf2[32], \
28  const float window[512], \
29  float out[32], intptr_t offset, float scale); \
30 static void synth_filter_##opt(FFTContext *imdct, \
31  float *synth_buf_ptr, int *synth_buf_offset, \
32  float synth_buf2[32], const float window[512], \
33  float out[32], const float in[32], float scale) \
34 { \
35  float *synth_buf= synth_buf_ptr + *synth_buf_offset; \
36  \
37  imdct->imdct_half(imdct, synth_buf, in); \
38  \
39  ff_synth_filter_inner_##opt(synth_buf, synth_buf2, window, \
40  out, *synth_buf_offset, scale); \
41  \
42  *synth_buf_offset = (*synth_buf_offset - 32) & 511; \
43 } \
44 
45 #if HAVE_X86ASM
46 #if ARCH_X86_32
48 #endif
52 #endif /* HAVE_X86ASM */
53 
55 {
56 #if HAVE_X86ASM
58 
59 #if ARCH_X86_32
60  if (EXTERNAL_SSE(cpu_flags)) {
61  s->synth_filter_float = synth_filter_sse;
62  }
63 #endif
64  if (EXTERNAL_SSE2(cpu_flags)) {
65  s->synth_filter_float = synth_filter_sse2;
66  }
68  s->synth_filter_float = synth_filter_avx;
69  }
71  s->synth_filter_float = synth_filter_fma3;
72  }
73 #endif /* HAVE_X86ASM */
74 }
cpu.h
synth_filter.h
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:96
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:50
SynthFilterContext
Definition: synth_filter.h:27
ff_synth_filter_init_x86
av_cold void ff_synth_filter_init_x86(SynthFilterContext *s)
Definition: synth_filter_init.c:54
av_cold
#define av_cold
Definition: attributes.h:90
s
#define s(width, name)
Definition: cbs_vp9.c:257
EXTERNAL_SSE
#define EXTERNAL_SSE(flags)
Definition: cpu.h:58
sse
static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride)
Definition: mpegvideo_enc.c:2571
EXTERNAL_AVX_FAST
#define EXTERNAL_AVX_FAST(flags)
Definition: cpu.h:71
cpu.h
attributes.h
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
EXTERNAL_FMA3_FAST
#define EXTERNAL_FMA3_FAST(flags)
Definition: cpu.h:75
SYNTH_FILTER_FUNC
#define SYNTH_FILTER_FUNC(opt)
Definition: synth_filter_init.c:26