FFmpeg
dct_init.c
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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 "config.h"
20 #include "libavutil/attributes.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavcodec/dct.h"
24 
25 void ff_dct32_float_sse(FFTSample *out, const FFTSample *in);
26 void ff_dct32_float_sse2(FFTSample *out, const FFTSample *in);
27 void ff_dct32_float_avx(FFTSample *out, const FFTSample *in);
28 
30 {
32 
33 #if ARCH_X86_32
35  s->dct32 = ff_dct32_float_sse;
36 #endif
38  s->dct32 = ff_dct32_float_sse2;
40  s->dct32 = ff_dct32_float_avx;
41 }
cpu.h
out
FILE * out
Definition: movenc.c:54
ff_dct32_float_avx
void ff_dct32_float_avx(FFTSample *out, const FFTSample *in)
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
av_cold
#define av_cold
Definition: attributes.h:90
dct.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
EXTERNAL_SSE
#define EXTERNAL_SSE(flags)
Definition: cpu.h:58
ff_dct32_float_sse
void ff_dct32_float_sse(FFTSample *out, const FFTSample *in)
EXTERNAL_AVX_FAST
#define EXTERNAL_AVX_FAST(flags)
Definition: cpu.h:71
FFTSample
float FFTSample
Definition: avfft.h:35
cpu.h
ff_dct32_float_sse2
void ff_dct32_float_sse2(FFTSample *out, const FFTSample *in)
attributes.h
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
DCTContext
Definition: dct.h:32
ff_dct_init_x86
av_cold void ff_dct_init_x86(DCTContext *s)
Definition: dct_init.c:29