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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/asm.h"
31 #include "libavutil/x86/cpu.h"
32 #include "libavutil/cpu.h"
33 #include "libavutil/bswap.h"
34 #include "libswscale/rgb2rgb.h"
35 #include "libswscale/swscale.h"
36 #include "libswscale/swscale_internal.h"
37 
38 #if HAVE_INLINE_ASM
39 
40 DECLARE_ASM_CONST(8, uint64_t, mmx_ff) = 0x00000000000000FFULL;
41 DECLARE_ASM_CONST(8, uint64_t, mmx_null) = 0x0000000000000000ULL;
42 DECLARE_ASM_CONST(8, uint64_t, mmx_one) = 0xFFFFFFFFFFFFFFFFULL;
43 DECLARE_ASM_CONST(8, uint64_t, mask32b) = 0x000000FF000000FFULL;
44 DECLARE_ASM_CONST(8, uint64_t, mask32g) = 0x0000FF000000FF00ULL;
45 DECLARE_ASM_CONST(8, uint64_t, mask32r) = 0x00FF000000FF0000ULL;
46 DECLARE_ASM_CONST(8, uint64_t, mask32a) = 0xFF000000FF000000ULL;
47 DECLARE_ASM_CONST(8, uint64_t, mask32) = 0x00FFFFFF00FFFFFFULL;
48 DECLARE_ASM_CONST(8, uint64_t, mask3216br) = 0x00F800F800F800F8ULL;
49 DECLARE_ASM_CONST(8, uint64_t, mask3216g) = 0x0000FC000000FC00ULL;
50 DECLARE_ASM_CONST(8, uint64_t, mask3215g) = 0x0000F8000000F800ULL;
51 DECLARE_ASM_CONST(8, uint64_t, mul3216) = 0x2000000420000004ULL;
52 DECLARE_ASM_CONST(8, uint64_t, mul3215) = 0x2000000820000008ULL;
53 DECLARE_ASM_CONST(8, uint64_t, mask24b) = 0x00FF0000FF0000FFULL;
54 DECLARE_ASM_CONST(8, uint64_t, mask24g) = 0xFF0000FF0000FF00ULL;
55 DECLARE_ASM_CONST(8, uint64_t, mask24r) = 0x0000FF0000FF0000ULL;
56 DECLARE_ASM_CONST(8, uint64_t, mask24l) = 0x0000000000FFFFFFULL;
57 DECLARE_ASM_CONST(8, uint64_t, mask24h) = 0x0000FFFFFF000000ULL;
58 DECLARE_ASM_CONST(8, uint64_t, mask24hh) = 0xffff000000000000ULL;
59 DECLARE_ASM_CONST(8, uint64_t, mask24hhh) = 0xffffffff00000000ULL;
60 DECLARE_ASM_CONST(8, uint64_t, mask24hhhh) = 0xffffffffffff0000ULL;
61 DECLARE_ASM_CONST(8, uint64_t, mask15b) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
62 DECLARE_ASM_CONST(8, uint64_t, mask15rg) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
63 DECLARE_ASM_CONST(8, uint64_t, mask15s) = 0xFFE0FFE0FFE0FFE0ULL;
64 DECLARE_ASM_CONST(8, uint64_t, mask15g) = 0x03E003E003E003E0ULL;
65 DECLARE_ASM_CONST(8, uint64_t, mask15r) = 0x7C007C007C007C00ULL;
66 #define mask16b mask15b
67 DECLARE_ASM_CONST(8, uint64_t, mask16g) = 0x07E007E007E007E0ULL;
68 DECLARE_ASM_CONST(8, uint64_t, mask16r) = 0xF800F800F800F800ULL;
69 DECLARE_ASM_CONST(8, uint64_t, red_16mask) = 0x0000f8000000f800ULL;
70 DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
71 DECLARE_ASM_CONST(8, uint64_t, blue_16mask) = 0x0000001f0000001fULL;
72 DECLARE_ASM_CONST(8, uint64_t, red_15mask) = 0x00007c0000007c00ULL;
73 DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
74 DECLARE_ASM_CONST(8, uint64_t, blue_15mask) = 0x0000001f0000001fULL;
75 DECLARE_ASM_CONST(8, uint64_t, mul15_mid) = 0x4200420042004200ULL;
76 DECLARE_ASM_CONST(8, uint64_t, mul15_hi) = 0x0210021002100210ULL;
77 DECLARE_ASM_CONST(8, uint64_t, mul16_mid) = 0x2080208020802080ULL;
78 
79 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
80 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
81 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
82 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
83 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
84 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
85 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
86 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
87 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
88 
89 // Note: We have C, MMX, MMXEXT, 3DNOW versions, there is no 3DNOW + MMXEXT one.
90 
91 #define COMPILE_TEMPLATE_MMXEXT 0
92 #define COMPILE_TEMPLATE_AMD3DNOW 0
93 #define COMPILE_TEMPLATE_SSE2 0
94 #define COMPILE_TEMPLATE_AVX 0
95 
96 //MMX versions
97 #undef RENAME
98 #define RENAME(a) a ## _mmx
99 #include "rgb2rgb_template.c"
100 
101 // MMXEXT versions
102 #undef RENAME
103 #undef COMPILE_TEMPLATE_MMXEXT
104 #define COMPILE_TEMPLATE_MMXEXT 1
105 #define RENAME(a) a ## _mmxext
106 #include "rgb2rgb_template.c"
107 
108 //SSE2 versions
109 #undef RENAME
110 #undef COMPILE_TEMPLATE_SSE2
111 #define COMPILE_TEMPLATE_SSE2 1
112 #define RENAME(a) a ## _sse2
113 #include "rgb2rgb_template.c"
114 
115 //AVX versions
116 #undef RENAME
117 #undef COMPILE_TEMPLATE_AVX
118 #define COMPILE_TEMPLATE_AVX 1
119 #define RENAME(a) a ## _avx
120 #include "rgb2rgb_template.c"
121 
122 //3DNOW versions
123 #undef RENAME
124 #undef COMPILE_TEMPLATE_MMXEXT
125 #undef COMPILE_TEMPLATE_SSE2
126 #undef COMPILE_TEMPLATE_AVX
127 #undef COMPILE_TEMPLATE_AMD3DNOW
128 #define COMPILE_TEMPLATE_MMXEXT 0
129 #define COMPILE_TEMPLATE_SSE2 0
130 #define COMPILE_TEMPLATE_AVX 0
131 #define COMPILE_TEMPLATE_AMD3DNOW 1
132 #define RENAME(a) a ## _3dnow
133 #include "rgb2rgb_template.c"
134 
135 /*
136  RGB15->RGB16 original by Strepto/Astral
137  ported to gcc & bugfixed : A'rpi
138  MMXEXT, 3DNOW optimization by Nick Kurshev
139  32-bit C version, and and&add trick by Michael Niedermayer
140 */
141 
142 #endif /* HAVE_INLINE_ASM */
143 
144 av_cold void rgb2rgb_init_x86(void)
145 {
146 #if HAVE_INLINE_ASM
147  int cpu_flags = av_get_cpu_flags();
148 
149  if (INLINE_MMX(cpu_flags))
150  rgb2rgb_init_mmx();
151  if (INLINE_AMD3DNOW(cpu_flags))
152  rgb2rgb_init_3dnow();
153  if (INLINE_MMXEXT(cpu_flags))
154  rgb2rgb_init_mmxext();
155  if (INLINE_SSE2(cpu_flags))
156  rgb2rgb_init_sse2();
157  if (INLINE_AVX(cpu_flags))
158  rgb2rgb_init_avx();
159 #endif /* HAVE_INLINE_ASM */
160 }
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