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(AVTXContext *imdct, \
31  float *synth_buf_ptr, int *synth_buf_offset, \
32  float synth_buf2[32], const float window[512], \
33  float out[32], float in[32], float scale, \
34  av_tx_fn imdct_fn) \
35 { \
36  float *synth_buf= synth_buf_ptr + *synth_buf_offset; \
37  \
38  imdct_fn(imdct, synth_buf, in, sizeof(float)); \
39  \
40  ff_synth_filter_inner_##opt(synth_buf, synth_buf2, window, \
41  out, *synth_buf_offset, scale); \
42  \
43  *synth_buf_offset = (*synth_buf_offset - 32) & 511; \
44 } \
45 
46 #if HAVE_X86ASM
50 #endif /* HAVE_X86ASM */
51 
53 {
54 #if HAVE_X86ASM
56 
57  if (EXTERNAL_SSE2(cpu_flags)) {
58  s->synth_filter_float = synth_filter_sse2;
59  }
61  s->synth_filter_float = synth_filter_avx;
62  }
64  s->synth_filter_float = synth_filter_fma3;
65  }
66 #endif /* HAVE_X86ASM */
67 }
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:107
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:56
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:52
av_cold
#define av_cold
Definition: attributes.h:90
s
#define s(width, name)
Definition: cbs_vp9.c:198
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