fft_init.c
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav 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  * Libav 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 Libav; 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/cpu.h"
20 #include "libavutil/x86/cpu.h"
21 #include "libavcodec/dsputil.h"
22 #include "libavcodec/dct.h"
23 #include "fft.h"
24 
26 {
27  int has_vectors = av_get_cpu_flags();
28 #if ARCH_X86_32
29  if (EXTERNAL_AMD3DNOW(has_vectors)) {
30  /* 3DNow! for K6-2/3 */
34  }
35  if (EXTERNAL_AMD3DNOWEXT(has_vectors)) {
36  /* 3DNowEx for K7 */
40  }
41 #endif
42  if (EXTERNAL_SSE(has_vectors)) {
43  /* SSE for P3/P4/K8 */
49  }
50  if (EXTERNAL_AVX(has_vectors) && s->nbits >= 5) {
51  /* AVX for SB */
55  }
56 }
57 
58 #if CONFIG_DCT
60 {
61  int has_vectors = av_get_cpu_flags();
62  if (EXTERNAL_SSE(has_vectors))
64  if (EXTERNAL_SSE2(has_vectors))
66  if (EXTERNAL_AVX(has_vectors))
68 }
69 #endif
void ff_fft_calc_avx(FFTContext *s, FFTComplex *z)
av_cold void ff_fft_init_x86(FFTContext *s)
Definition: fft_init.c:25
void ff_imdct_half_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input)
void(* fft_permute)(struct FFTContext *s, FFTComplex *z)
Do the permutation needed BEFORE calling fft_calc().
Definition: fft.h:75
#define EXTERNAL_SSE(flags)
Definition: cpu.h:35
void ff_imdct_half_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input)
void ff_dct32_float_avx(FFTSample *out, const FFTSample *in)
void ff_dct_init_x86(DCTContext *s)
void ff_dct32_float_sse2(FFTSample *out, const FFTSample *in)
void ff_dct32_float_sse(FFTSample *out, const FFTSample *in)
void ff_fft_calc_3dnow(FFTContext *s, FFTComplex *z)
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:36
void ff_fft_calc_sse(FFTContext *s, FFTComplex *z)
#define EXTERNAL_AMD3DNOWEXT(flags)
Definition: cpu.h:32
void(* imdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
Definition: fft.h:81
void ff_imdct_calc_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input)
Definition: fft.h:62
int nbits
Definition: fft.h:63
Definition: dct.h:29
int fft_permutation
Definition: fft.h:85
#define FF_FFT_PERM_SWAP_LSBS
Definition: fft.h:87
void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
void ff_imdct_half_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
#define FF_FFT_PERM_AVX
Definition: fft.h:88
void(* dct32)(FFTSample *out, const FFTSample *in)
Definition: dct.h:36
void(* imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
Definition: fft.h:82
void ff_imdct_calc_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input)
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:25
void ff_fft_calc_3dnowext(FFTContext *s, FFTComplex *z)
void ff_imdct_half_avx(FFTContext *s, FFTSample *output, const FFTSample *input)
void(* fft_calc)(struct FFTContext *s, FFTComplex *z)
Do a complex FFT with the parameters defined in ff_fft_init().
Definition: fft.h:80
DSP utils.
void ff_fft_permute_sse(FFTContext *s, FFTComplex *z)
#define EXTERNAL_AMD3DNOW(flags)
Definition: cpu.h:31
#define EXTERNAL_AVX(flags)
Definition: cpu.h:41