FFmpeg
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
float_dsp_init.c
Go to the documentation of this file.
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/cpu.h"
22 #include "libavutil/float_dsp.h"
23 #include "cpu.h"
24 #include "asm.h"
25 
26 extern void ff_vector_fmul_sse(float *dst, const float *src0, const float *src1,
27  int len);
28 extern void ff_vector_fmul_avx(float *dst, const float *src0, const float *src1,
29  int len);
30 
31 extern void ff_vector_fmac_scalar_sse(float *dst, const float *src, float mul,
32  int len);
33 extern void ff_vector_fmac_scalar_avx(float *dst, const float *src, float mul,
34  int len);
35 
36 extern void ff_vector_fmul_scalar_sse(float *dst, const float *src, float mul,
37  int len);
38 
39 extern void ff_vector_dmul_scalar_sse2(double *dst, const double *src,
40  double mul, int len);
41 extern void ff_vector_dmul_scalar_avx(double *dst, const double *src,
42  double mul, int len);
43 
44 void ff_vector_fmul_add_sse(float *dst, const float *src0, const float *src1,
45  const float *src2, int len);
46 void ff_vector_fmul_add_avx(float *dst, const float *src0, const float *src1,
47  const float *src2, int len);
48 
49 void ff_vector_fmul_reverse_sse(float *dst, const float *src0,
50  const float *src1, int len);
51 void ff_vector_fmul_reverse_avx(float *dst, const float *src0,
52  const float *src1, int len);
53 
54 float ff_scalarproduct_float_sse(const float *v1, const float *v2, int order);
55 
56 #if HAVE_6REGS && HAVE_INLINE_ASM
57 static void vector_fmul_window_3dnowext(float *dst, const float *src0,
58  const float *src1, const float *win,
59  int len)
60 {
61  x86_reg i = -len * 4;
62  x86_reg j = len * 4 - 8;
63  __asm__ volatile (
64  "1: \n"
65  "pswapd (%5, %1), %%mm1 \n"
66  "movq (%5, %0), %%mm0 \n"
67  "pswapd (%4, %1), %%mm5 \n"
68  "movq (%3, %0), %%mm4 \n"
69  "movq %%mm0, %%mm2 \n"
70  "movq %%mm1, %%mm3 \n"
71  "pfmul %%mm4, %%mm2 \n" // src0[len + i] * win[len + i]
72  "pfmul %%mm5, %%mm3 \n" // src1[j] * win[len + j]
73  "pfmul %%mm4, %%mm1 \n" // src0[len + i] * win[len + j]
74  "pfmul %%mm5, %%mm0 \n" // src1[j] * win[len + i]
75  "pfadd %%mm3, %%mm2 \n"
76  "pfsub %%mm0, %%mm1 \n"
77  "pswapd %%mm2, %%mm2 \n"
78  "movq %%mm1, (%2, %0) \n"
79  "movq %%mm2, (%2, %1) \n"
80  "sub $8, %1 \n"
81  "add $8, %0 \n"
82  "jl 1b \n"
83  "femms \n"
84  : "+r"(i), "+r"(j)
85  : "r"(dst + len), "r"(src0 + len), "r"(src1), "r"(win + len)
86  );
87 }
88 
89 static void vector_fmul_window_sse(float *dst, const float *src0,
90  const float *src1, const float *win, int len)
91 {
92  x86_reg i = -len * 4;
93  x86_reg j = len * 4 - 16;
94  __asm__ volatile (
95  "1: \n"
96  "movaps (%5, %1), %%xmm1 \n"
97  "movaps (%5, %0), %%xmm0 \n"
98  "movaps (%4, %1), %%xmm5 \n"
99  "movaps (%3, %0), %%xmm4 \n"
100  "shufps $0x1b, %%xmm1, %%xmm1 \n"
101  "shufps $0x1b, %%xmm5, %%xmm5 \n"
102  "movaps %%xmm0, %%xmm2 \n"
103  "movaps %%xmm1, %%xmm3 \n"
104  "mulps %%xmm4, %%xmm2 \n" // src0[len + i] * win[len + i]
105  "mulps %%xmm5, %%xmm3 \n" // src1[j] * win[len + j]
106  "mulps %%xmm4, %%xmm1 \n" // src0[len + i] * win[len + j]
107  "mulps %%xmm5, %%xmm0 \n" // src1[j] * win[len + i]
108  "addps %%xmm3, %%xmm2 \n"
109  "subps %%xmm0, %%xmm1 \n"
110  "shufps $0x1b, %%xmm2, %%xmm2 \n"
111  "movaps %%xmm1, (%2, %0) \n"
112  "movaps %%xmm2, (%2, %1) \n"
113  "sub $16, %1 \n"
114  "add $16, %0 \n"
115  "jl 1b \n"
116  : "+r"(i), "+r"(j)
117  : "r"(dst + len), "r"(src0 + len), "r"(src1), "r"(win + len)
118  );
119 }
120 #endif /* HAVE_6REGS && HAVE_INLINE_ASM */
121 
122 void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
123 {
124  int mm_flags = av_get_cpu_flags();
125 
126 #if HAVE_6REGS && HAVE_INLINE_ASM
127  if (INLINE_AMD3DNOWEXT(mm_flags)) {
128  fdsp->vector_fmul_window = vector_fmul_window_3dnowext;
129  }
130  if (INLINE_SSE(mm_flags)) {
131  fdsp->vector_fmul_window = vector_fmul_window_sse;
132  }
133 #endif
134  if (EXTERNAL_SSE(mm_flags)) {
135  fdsp->vector_fmul = ff_vector_fmul_sse;
136  fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_sse;
137  fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_sse;
138  fdsp->vector_fmul_add = ff_vector_fmul_add_sse;
139  fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_sse;
140  fdsp->scalarproduct_float = ff_scalarproduct_float_sse;
141  }
142  if (EXTERNAL_SSE2(mm_flags)) {
143  fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_sse2;
144  }
145  if (EXTERNAL_AVX(mm_flags)) {
146  fdsp->vector_fmul = ff_vector_fmul_avx;
147  fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_avx;
148  fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_avx;
149  fdsp->vector_fmul_add = ff_vector_fmul_add_avx;
150  fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_avx;
151  }
152 }
Generated on Sat May 25 2013 04:01:21 for FFmpeg by   doxygen 1.8.2