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float_dsp_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 
21 #include "libavutil/attributes.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/float_dsp.h"
24 #include "cpu.h"
25 #include "asm.h"
26 
27 void ff_vector_fmul_sse(float *dst, const float *src0, const float *src1,
28  int len);
29 void ff_vector_fmul_avx(float *dst, const float *src0, const float *src1,
30  int len);
31 
32 void ff_vector_fmac_scalar_sse(float *dst, const float *src, float mul,
33  int len);
34 void ff_vector_fmac_scalar_avx(float *dst, const float *src, float mul,
35  int len);
36 
37 void ff_vector_fmul_scalar_sse(float *dst, const float *src, float mul,
38  int len);
39 
40 void ff_vector_dmul_scalar_sse2(double *dst, const double *src,
41  double mul, int len);
42 void ff_vector_dmul_scalar_avx(double *dst, const double *src,
43  double mul, int len);
44 
45 void ff_vector_fmul_add_sse(float *dst, const float *src0, const float *src1,
46  const float *src2, int len);
47 void ff_vector_fmul_add_avx(float *dst, const float *src0, const float *src1,
48  const float *src2, int len);
49 
50 void ff_vector_fmul_reverse_sse(float *dst, const float *src0,
51  const float *src1, int len);
52 void ff_vector_fmul_reverse_avx(float *dst, const float *src0,
53  const float *src1, int len);
54 
55 float ff_scalarproduct_float_sse(const float *v1, const float *v2, int order);
56 
57 void ff_butterflies_float_sse(float *src0, float *src1, int len);
58 
59 #if HAVE_6REGS && HAVE_INLINE_ASM
60 static void vector_fmul_window_3dnowext(float *dst, const float *src0,
61  const float *src1, const float *win,
62  int len)
63 {
64  x86_reg i = -len * 4;
65  x86_reg j = len * 4 - 8;
66  __asm__ volatile (
67  "1: \n"
68  "pswapd (%5, %1), %%mm1 \n"
69  "movq (%5, %0), %%mm0 \n"
70  "pswapd (%4, %1), %%mm5 \n"
71  "movq (%3, %0), %%mm4 \n"
72  "movq %%mm0, %%mm2 \n"
73  "movq %%mm1, %%mm3 \n"
74  "pfmul %%mm4, %%mm2 \n" // src0[len + i] * win[len + i]
75  "pfmul %%mm5, %%mm3 \n" // src1[j] * win[len + j]
76  "pfmul %%mm4, %%mm1 \n" // src0[len + i] * win[len + j]
77  "pfmul %%mm5, %%mm0 \n" // src1[j] * win[len + i]
78  "pfadd %%mm3, %%mm2 \n"
79  "pfsub %%mm0, %%mm1 \n"
80  "pswapd %%mm2, %%mm2 \n"
81  "movq %%mm1, (%2, %0) \n"
82  "movq %%mm2, (%2, %1) \n"
83  "sub $8, %1 \n"
84  "add $8, %0 \n"
85  "jl 1b \n"
86  "femms \n"
87  : "+r"(i), "+r"(j)
88  : "r"(dst + len), "r"(src0 + len), "r"(src1), "r"(win + len)
89  );
90 }
91 
92 static void vector_fmul_window_sse(float *dst, const float *src0,
93  const float *src1, const float *win, int len)
94 {
95  x86_reg i = -len * 4;
96  x86_reg j = len * 4 - 16;
97  __asm__ volatile (
98  "1: \n"
99  "movaps (%5, %1), %%xmm1 \n"
100  "movaps (%5, %0), %%xmm0 \n"
101  "movaps (%4, %1), %%xmm5 \n"
102  "movaps (%3, %0), %%xmm4 \n"
103  "shufps $0x1b, %%xmm1, %%xmm1 \n"
104  "shufps $0x1b, %%xmm5, %%xmm5 \n"
105  "movaps %%xmm0, %%xmm2 \n"
106  "movaps %%xmm1, %%xmm3 \n"
107  "mulps %%xmm4, %%xmm2 \n" // src0[len + i] * win[len + i]
108  "mulps %%xmm5, %%xmm3 \n" // src1[j] * win[len + j]
109  "mulps %%xmm4, %%xmm1 \n" // src0[len + i] * win[len + j]
110  "mulps %%xmm5, %%xmm0 \n" // src1[j] * win[len + i]
111  "addps %%xmm3, %%xmm2 \n"
112  "subps %%xmm0, %%xmm1 \n"
113  "shufps $0x1b, %%xmm2, %%xmm2 \n"
114  "movaps %%xmm1, (%2, %0) \n"
115  "movaps %%xmm2, (%2, %1) \n"
116  "sub $16, %1 \n"
117  "add $16, %0 \n"
118  "jl 1b \n"
119  : "+r"(i), "+r"(j)
120  : "r"(dst + len), "r"(src0 + len), "r"(src1), "r"(win + len)
121  );
122 }
123 #endif /* HAVE_6REGS && HAVE_INLINE_ASM */
124 
125 av_cold void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
126 {
127  int mm_flags = av_get_cpu_flags();
128 
129 #if HAVE_6REGS && HAVE_INLINE_ASM
130  if (INLINE_AMD3DNOWEXT(mm_flags)) {
131  fdsp->vector_fmul_window = vector_fmul_window_3dnowext;
132  }
133  if (INLINE_SSE(mm_flags)) {
134  fdsp->vector_fmul_window = vector_fmul_window_sse;
135  }
136 #endif
137  if (EXTERNAL_SSE(mm_flags)) {
138  fdsp->vector_fmul = ff_vector_fmul_sse;
139  fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_sse;
140  fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_sse;
141  fdsp->vector_fmul_add = ff_vector_fmul_add_sse;
142  fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_sse;
143  fdsp->scalarproduct_float = ff_scalarproduct_float_sse;
144  fdsp->butterflies_float = ff_butterflies_float_sse;
145  }
146  if (EXTERNAL_SSE2(mm_flags)) {
147  fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_sse2;
148  }
149  if (EXTERNAL_AVX(mm_flags)) {
150  fdsp->vector_fmul = ff_vector_fmul_avx;
151  fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_avx;
152  fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_avx;
153  fdsp->vector_fmul_add = ff_vector_fmul_add_avx;
154  fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_avx;
155  }
156 }
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