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fmtconvert_init.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  * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 #include "libavutil/attributes.h"
26 #include "libavutil/cpu.h"
27 #include "libavutil/x86/asm.h"
28 #include "libavutil/x86/cpu.h"
29 #include "libavcodec/fmtconvert.h"
30 
31 #if HAVE_YASM
32 
33 void ff_int32_to_float_fmul_scalar_sse (float *dst, const int32_t *src, float mul, int len);
34 void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int32_t *src, float mul, int len);
35 
36 void ff_float_to_int16_3dnow(int16_t *dst, const float *src, long len);
37 void ff_float_to_int16_sse (int16_t *dst, const float *src, long len);
38 void ff_float_to_int16_sse2 (int16_t *dst, const float *src, long len);
39 
40 void ff_float_to_int16_step_3dnow(int16_t *dst, const float *src, long len, long step);
41 void ff_float_to_int16_step_sse (int16_t *dst, const float *src, long len, long step);
42 void ff_float_to_int16_step_sse2 (int16_t *dst, const float *src, long len, long step);
43 
44 void ff_float_to_int16_interleave2_3dnow(int16_t *dst, const float **src, long len);
45 void ff_float_to_int16_interleave2_sse (int16_t *dst, const float **src, long len);
46 void ff_float_to_int16_interleave2_sse2 (int16_t *dst, const float **src, long len);
47 
48 void ff_float_to_int16_interleave6_sse(int16_t *dst, const float **src, int len);
49 void ff_float_to_int16_interleave6_3dnow(int16_t *dst, const float **src, int len);
50 void ff_float_to_int16_interleave6_3dnowext(int16_t *dst, const float **src, int len);
51 
52 #define ff_float_to_int16_interleave6_sse2 ff_float_to_int16_interleave6_sse
53 
54 #define FLOAT_TO_INT16_INTERLEAVE(cpu) \
55 /* gcc pessimizes register allocation if this is in the same function as float_to_int16_interleave_sse2*/\
56 static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const float **src, long len, int channels){\
57  int c;\
58  for(c=0; c<channels; c++){\
59  ff_float_to_int16_step_##cpu(dst+c, src[c], len, channels);\
60  }\
61 }\
62 \
63 static void float_to_int16_interleave_##cpu(int16_t *dst, const float **src, long len, int channels){\
64  if(channels==1)\
65  ff_float_to_int16_##cpu(dst, src[0], len);\
66  else if(channels==2){\
67  ff_float_to_int16_interleave2_##cpu(dst, src, len);\
68  }else if(channels==6){\
69  ff_float_to_int16_interleave6_##cpu(dst, src, len);\
70  }else\
71  float_to_int16_interleave_misc_##cpu(dst, src, len, channels);\
72 }
73 
74 FLOAT_TO_INT16_INTERLEAVE(3dnow)
75 FLOAT_TO_INT16_INTERLEAVE(sse)
76 FLOAT_TO_INT16_INTERLEAVE(sse2)
77 
78 static void float_to_int16_interleave_3dnowext(int16_t *dst, const float **src,
79  long len, int channels)
80 {
81  if(channels==6)
82  ff_float_to_int16_interleave6_3dnowext(dst, src, len);
83  else
84  float_to_int16_interleave_3dnow(dst, src, len, channels);
85 }
86 
87 void ff_float_interleave2_mmx(float *dst, const float **src, unsigned int len);
88 void ff_float_interleave2_sse(float *dst, const float **src, unsigned int len);
89 
90 void ff_float_interleave6_mmx(float *dst, const float **src, unsigned int len);
91 void ff_float_interleave6_sse(float *dst, const float **src, unsigned int len);
92 
93 static void float_interleave_mmx(float *dst, const float **src,
94  unsigned int len, int channels)
95 {
96  if (channels == 2) {
97  ff_float_interleave2_mmx(dst, src, len);
98  } else if (channels == 6)
99  ff_float_interleave6_mmx(dst, src, len);
100  else
101  ff_float_interleave_c(dst, src, len, channels);
102 }
103 
104 static void float_interleave_sse(float *dst, const float **src,
105  unsigned int len, int channels)
106 {
107  if (channels == 2) {
108  ff_float_interleave2_sse(dst, src, len);
109  } else if (channels == 6)
110  ff_float_interleave6_sse(dst, src, len);
111  else
112  ff_float_interleave_c(dst, src, len, channels);
113 }
114 #endif /* HAVE_YASM */
115 
117 {
118 #if HAVE_YASM
119  int cpu_flags = av_get_cpu_flags();
120 
121  if (EXTERNAL_MMX(cpu_flags)) {
122  c->float_interleave = float_interleave_mmx;
123  }
124  if (EXTERNAL_AMD3DNOW(cpu_flags)) {
125  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
126  c->float_to_int16 = ff_float_to_int16_3dnow;
127  c->float_to_int16_interleave = float_to_int16_interleave_3dnow;
128  }
129  }
130  if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
131  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
132  c->float_to_int16_interleave = float_to_int16_interleave_3dnowext;
133  }
134  }
135  if (EXTERNAL_SSE(cpu_flags)) {
136  c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
137  c->float_to_int16 = ff_float_to_int16_sse;
138  c->float_to_int16_interleave = float_to_int16_interleave_sse;
139  c->float_interleave = float_interleave_sse;
140  }
141  if (EXTERNAL_SSE2(cpu_flags)) {
142  c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
143  c->float_to_int16 = ff_float_to_int16_sse2;
144  c->float_to_int16_interleave = float_to_int16_interleave_sse2;
145  }
146 #endif /* HAVE_YASM */
147 }