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rgb2rgb.c
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1 /*
2  * software RGB to RGB converter
3  * pluralize by software PAL8 to RGB converter
4  * software YUV to YUV converter
5  * software YUV to RGB converter
6  * Written by Nick Kurshev.
7  * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
8  *
9  * This file is part of FFmpeg.
10  *
11  * FFmpeg is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * FFmpeg is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with FFmpeg; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24  */
25 
26 #include <stdint.h>
27 
28 #include "config.h"
29 #include "libavutil/attributes.h"
30 #include "libavutil/x86/cpu.h"
31 #include "libavutil/cpu.h"
32 #include "libavutil/bswap.h"
33 #include "libswscale/rgb2rgb.h"
34 #include "libswscale/swscale.h"
35 #include "libswscale/swscale_internal.h"
36 
37 #if HAVE_INLINE_ASM
38 
39 DECLARE_ASM_CONST(8, uint64_t, mmx_ff) = 0x00000000000000FFULL;
40 DECLARE_ASM_CONST(8, uint64_t, mmx_null) = 0x0000000000000000ULL;
41 DECLARE_ASM_CONST(8, uint64_t, mmx_one) = 0xFFFFFFFFFFFFFFFFULL;
42 DECLARE_ASM_CONST(8, uint64_t, mask32b) = 0x000000FF000000FFULL;
43 DECLARE_ASM_CONST(8, uint64_t, mask32g) = 0x0000FF000000FF00ULL;
44 DECLARE_ASM_CONST(8, uint64_t, mask32r) = 0x00FF000000FF0000ULL;
45 DECLARE_ASM_CONST(8, uint64_t, mask32a) = 0xFF000000FF000000ULL;
46 DECLARE_ASM_CONST(8, uint64_t, mask32) = 0x00FFFFFF00FFFFFFULL;
47 DECLARE_ASM_CONST(8, uint64_t, mask3216br) = 0x00F800F800F800F8ULL;
48 DECLARE_ASM_CONST(8, uint64_t, mask3216g) = 0x0000FC000000FC00ULL;
49 DECLARE_ASM_CONST(8, uint64_t, mask3215g) = 0x0000F8000000F800ULL;
50 DECLARE_ASM_CONST(8, uint64_t, mul3216) = 0x2000000420000004ULL;
51 DECLARE_ASM_CONST(8, uint64_t, mul3215) = 0x2000000820000008ULL;
52 DECLARE_ASM_CONST(8, uint64_t, mask24b) = 0x00FF0000FF0000FFULL;
53 DECLARE_ASM_CONST(8, uint64_t, mask24g) = 0xFF0000FF0000FF00ULL;
54 DECLARE_ASM_CONST(8, uint64_t, mask24r) = 0x0000FF0000FF0000ULL;
55 DECLARE_ASM_CONST(8, uint64_t, mask24l) = 0x0000000000FFFFFFULL;
56 DECLARE_ASM_CONST(8, uint64_t, mask24h) = 0x0000FFFFFF000000ULL;
57 DECLARE_ASM_CONST(8, uint64_t, mask24hh) = 0xffff000000000000ULL;
58 DECLARE_ASM_CONST(8, uint64_t, mask24hhh) = 0xffffffff00000000ULL;
59 DECLARE_ASM_CONST(8, uint64_t, mask24hhhh) = 0xffffffffffff0000ULL;
60 DECLARE_ASM_CONST(8, uint64_t, mask15b) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
61 DECLARE_ASM_CONST(8, uint64_t, mask15rg) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
62 DECLARE_ASM_CONST(8, uint64_t, mask15s) = 0xFFE0FFE0FFE0FFE0ULL;
63 DECLARE_ASM_CONST(8, uint64_t, mask15g) = 0x03E003E003E003E0ULL;
64 DECLARE_ASM_CONST(8, uint64_t, mask15r) = 0x7C007C007C007C00ULL;
65 #define mask16b mask15b
66 DECLARE_ASM_CONST(8, uint64_t, mask16g) = 0x07E007E007E007E0ULL;
67 DECLARE_ASM_CONST(8, uint64_t, mask16r) = 0xF800F800F800F800ULL;
68 DECLARE_ASM_CONST(8, uint64_t, red_16mask) = 0x0000f8000000f800ULL;
69 DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
70 DECLARE_ASM_CONST(8, uint64_t, blue_16mask) = 0x0000001f0000001fULL;
71 DECLARE_ASM_CONST(8, uint64_t, red_15mask) = 0x00007c0000007c00ULL;
72 DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
73 DECLARE_ASM_CONST(8, uint64_t, blue_15mask) = 0x0000001f0000001fULL;
74 DECLARE_ASM_CONST(8, uint64_t, mul15_mid) = 0x4200420042004200ULL;
75 DECLARE_ASM_CONST(8, uint64_t, mul15_hi) = 0x0210021002100210ULL;
76 DECLARE_ASM_CONST(8, uint64_t, mul16_mid) = 0x2080208020802080ULL;
77 
78 DECLARE_ALIGNED(8, extern const uint64_t, ff_bgr2YOffset);
79 DECLARE_ALIGNED(8, extern const uint64_t, ff_w1111);
80 DECLARE_ALIGNED(8, extern const uint64_t, ff_bgr2UVOffset);
81 
82 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
83 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
84 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
85 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
86 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
87 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
88 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
89 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
90 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
91 
92 // Note: We have C, MMX, MMXEXT, 3DNOW versions, there is no 3DNOW + MMXEXT one.
93 
94 #define COMPILE_TEMPLATE_MMXEXT 0
95 #define COMPILE_TEMPLATE_AMD3DNOW 0
96 #define COMPILE_TEMPLATE_SSE2 0
97 #define COMPILE_TEMPLATE_AVX 0
98 
99 //MMX versions
100 #undef RENAME
101 #define RENAME(a) a ## _mmx
102 #include "rgb2rgb_template.c"
103 
104 // MMXEXT versions
105 #undef RENAME
106 #undef COMPILE_TEMPLATE_MMXEXT
107 #define COMPILE_TEMPLATE_MMXEXT 1
108 #define RENAME(a) a ## _mmxext
109 #include "rgb2rgb_template.c"
110 
111 //SSE2 versions
112 #undef RENAME
113 #undef COMPILE_TEMPLATE_SSE2
114 #define COMPILE_TEMPLATE_SSE2 1
115 #define RENAME(a) a ## _sse2
116 #include "rgb2rgb_template.c"
117 
118 //AVX versions
119 #undef RENAME
120 #undef COMPILE_TEMPLATE_AVX
121 #define COMPILE_TEMPLATE_AVX 1
122 #define RENAME(a) a ## _avx
123 #include "rgb2rgb_template.c"
124 
125 //3DNOW versions
126 #undef RENAME
127 #undef COMPILE_TEMPLATE_MMXEXT
128 #undef COMPILE_TEMPLATE_SSE2
129 #undef COMPILE_TEMPLATE_AVX
130 #undef COMPILE_TEMPLATE_AMD3DNOW
131 #define COMPILE_TEMPLATE_MMXEXT 0
132 #define COMPILE_TEMPLATE_SSE2 0
133 #define COMPILE_TEMPLATE_AVX 0
134 #define COMPILE_TEMPLATE_AMD3DNOW 1
135 #define RENAME(a) a ## _3dnow
136 #include "rgb2rgb_template.c"
137 
138 /*
139  RGB15->RGB16 original by Strepto/Astral
140  ported to gcc & bugfixed : A'rpi
141  MMXEXT, 3DNOW optimization by Nick Kurshev
142  32-bit C version, and and&add trick by Michael Niedermayer
143 */
144 
145 #endif /* HAVE_INLINE_ASM */
146 
147 av_cold void rgb2rgb_init_x86(void)
148 {
149 #if HAVE_INLINE_ASM
150  int cpu_flags = av_get_cpu_flags();
151 
152  if (INLINE_MMX(cpu_flags))
153  rgb2rgb_init_mmx();
154  if (INLINE_AMD3DNOW(cpu_flags))
155  rgb2rgb_init_3dnow();
156  if (INLINE_MMXEXT(cpu_flags))
157  rgb2rgb_init_mmxext();
158  if (INLINE_SSE2(cpu_flags))
159  rgb2rgb_init_sse2();
160  if (INLINE_AVX(cpu_flags))
161  rgb2rgb_init_avx();
162 #endif /* HAVE_INLINE_ASM */
163 }
INLINE_SSE2
#define INLINE_SSE2(flags)
Definition: cpu.h:88
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:50
rgb2rgb_init_x86
av_cold void rgb2rgb_init_x86(void)
Definition: rgb2rgb.c:147
INLINE_AVX
#define INLINE_AVX(flags)
Definition: cpu.h:99
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition: attributes.h:82
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:104
swscale.h
external API header
INLINE_MMX
#define INLINE_MMX(flags)
Definition: cpu.h:85
DECLARE_ASM_CONST
#define DECLARE_ASM_CONST(n, t, v)
Declare a static constant aligned variable appropriate for use in inline assembly code...
Definition: mem.h:105
INLINE_AMD3DNOW
#define INLINE_AMD3DNOW(flags)
Definition: cpu.h:83
swscale_internal.h
bswap.h
byte swapping routines
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:92
INLINE_MMXEXT
#define INLINE_MMXEXT(flags)
Definition: cpu.h:86
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