fmtconvert_mmx.c
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1 /*
2  * Format Conversion Utils
3  * Copyright (c) 2000, 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  *
22  * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
23  */
24 
25 #include "libavutil/cpu.h"
26 #include "libavutil/x86_cpu.h"
27 #include "libavcodec/fmtconvert.h"
28 
29 #if HAVE_YASM
30 
31 void ff_int32_to_float_fmul_scalar_sse (float *dst, const int *src, float mul, int len);
32 void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int *src, float mul, int len);
33 
34 void ff_float_to_int16_3dnow(int16_t *dst, const float *src, long len);
35 void ff_float_to_int16_sse (int16_t *dst, const float *src, long len);
36 void ff_float_to_int16_sse2 (int16_t *dst, const float *src, long len);
37 
38 void ff_float_to_int16_interleave2_3dnow(int16_t *dst, const float **src, long len);
39 void ff_float_to_int16_interleave2_sse (int16_t *dst, const float **src, long len);
40 void ff_float_to_int16_interleave2_sse2 (int16_t *dst, const float **src, long len);
41 
42 void ff_float_to_int16_interleave6_sse(int16_t *dst, const float **src, int len);
43 void ff_float_to_int16_interleave6_3dnow(int16_t *dst, const float **src, int len);
44 void ff_float_to_int16_interleave6_3dn2(int16_t *dst, const float **src, int len);
45 
46 #define ff_float_to_int16_interleave6_sse2 ff_float_to_int16_interleave6_sse
47 
48 #define FLOAT_TO_INT16_INTERLEAVE(cpu) \
49 /* gcc pessimizes register allocation if this is in the same function as float_to_int16_interleave_sse2*/\
50 static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const float **src, long len, int channels){\
51  DECLARE_ALIGNED(16, int16_t, tmp)[len];\
52  int i,j,c;\
53  for(c=0; c<channels; c++){\
54  ff_float_to_int16_##cpu(tmp, src[c], len);\
55  for(i=0, j=c; i<len; i++, j+=channels)\
56  dst[j] = tmp[i];\
57  }\
58 }\
59 \
60 static void float_to_int16_interleave_##cpu(int16_t *dst, const float **src, long len, int channels){\
61  if(channels==1)\
62  ff_float_to_int16_##cpu(dst, src[0], len);\
63  else if(channels==2){\
64  ff_float_to_int16_interleave2_##cpu(dst, src, len);\
65  }else if(channels==6){\
66  ff_float_to_int16_interleave6_##cpu(dst, src, len);\
67  }else\
68  float_to_int16_interleave_misc_##cpu(dst, src, len, channels);\
69 }
70 
71 FLOAT_TO_INT16_INTERLEAVE(3dnow)
72 FLOAT_TO_INT16_INTERLEAVE(sse)
73 FLOAT_TO_INT16_INTERLEAVE(sse2)
74 
75 static void float_to_int16_interleave_3dn2(int16_t *dst, const float **src, long len, int channels){
76  if(channels==6)
77  ff_float_to_int16_interleave6_3dn2(dst, src, len);
78  else
79  float_to_int16_interleave_3dnow(dst, src, len, channels);
80 }
81 
82 void ff_float_interleave2_mmx(float *dst, const float **src, unsigned int len);
83 void ff_float_interleave2_sse(float *dst, const float **src, unsigned int len);
84 
85 void ff_float_interleave6_mmx(float *dst, const float **src, unsigned int len);
86 void ff_float_interleave6_sse(float *dst, const float **src, unsigned int len);
87 
88 static void float_interleave_mmx(float *dst, const float **src,
89  unsigned int len, int channels)
90 {
91  if (channels == 2) {
92  ff_float_interleave2_mmx(dst, src, len);
93  } else if (channels == 6)
94  ff_float_interleave6_mmx(dst, src, len);
95  else
96  ff_float_interleave_c(dst, src, len, channels);
97 }
98 
99 static void float_interleave_sse(float *dst, const float **src,
100  unsigned int len, int channels)
101 {
102  if (channels == 2) {
103  ff_float_interleave2_sse(dst, src, len);
104  } else if (channels == 6)
105  ff_float_interleave6_sse(dst, src, len);
106  else
107  ff_float_interleave_c(dst, src, len, channels);
108 }
109 #endif
110 
112 {
113  int mm_flags = av_get_cpu_flags();
114 
115 #if HAVE_YASM
116  if (mm_flags & AV_CPU_FLAG_MMX) {
117  c->float_interleave = float_interleave_mmx;
118 
119  if (HAVE_AMD3DNOW && mm_flags & AV_CPU_FLAG_3DNOW) {
120  if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
121  c->float_to_int16 = ff_float_to_int16_3dnow;
122  c->float_to_int16_interleave = float_to_int16_interleave_3dnow;
123  }
124  }
125  if (HAVE_AMD3DNOWEXT && mm_flags & AV_CPU_FLAG_3DNOWEXT) {
126  if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
127  c->float_to_int16_interleave = float_to_int16_interleave_3dn2;
128  }
129  }
130  if (HAVE_SSE && mm_flags & AV_CPU_FLAG_SSE) {
131  c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
132  c->float_to_int16 = ff_float_to_int16_sse;
133  c->float_to_int16_interleave = float_to_int16_interleave_sse;
134  c->float_interleave = float_interleave_sse;
135  }
136  if (HAVE_SSE && mm_flags & AV_CPU_FLAG_SSE2) {
137  c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
138  c->float_to_int16 = ff_float_to_int16_sse2;
139  c->float_to_int16_interleave = float_to_int16_interleave_sse2;
140  }
141  }
142 #endif
143 }