swscale: add nv12/nv21->yuv420 converter
[libav.git] / libswscale / x86 / rgb2rgb.c
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c0038328
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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 Libav.
10 *
11 * Libav 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 * Libav 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 Libav; 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"
5a6e3c03 29#include "libavutil/attributes.h"
c318626c 30#include "libavutil/x86/asm.h"
e0c6cce4 31#include "libavutil/x86/cpu.h"
e66149e7 32#include "libavutil/cpu.h"
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33#include "libavutil/bswap.h"
34#include "libswscale/rgb2rgb.h"
35#include "libswscale/swscale.h"
36#include "libswscale/swscale_internal.h"
37
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38#if HAVE_INLINE_ASM
39
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40DECLARE_ASM_CONST(8, uint64_t, mmx_ff) = 0x00000000000000FFULL;
41DECLARE_ASM_CONST(8, uint64_t, mmx_null) = 0x0000000000000000ULL;
42DECLARE_ASM_CONST(8, uint64_t, mmx_one) = 0xFFFFFFFFFFFFFFFFULL;
43DECLARE_ASM_CONST(8, uint64_t, mask32b) = 0x000000FF000000FFULL;
44DECLARE_ASM_CONST(8, uint64_t, mask32g) = 0x0000FF000000FF00ULL;
45DECLARE_ASM_CONST(8, uint64_t, mask32r) = 0x00FF000000FF0000ULL;
46DECLARE_ASM_CONST(8, uint64_t, mask32a) = 0xFF000000FF000000ULL;
47DECLARE_ASM_CONST(8, uint64_t, mask32) = 0x00FFFFFF00FFFFFFULL;
48DECLARE_ASM_CONST(8, uint64_t, mask3216br) = 0x00F800F800F800F8ULL;
49DECLARE_ASM_CONST(8, uint64_t, mask3216g) = 0x0000FC000000FC00ULL;
50DECLARE_ASM_CONST(8, uint64_t, mask3215g) = 0x0000F8000000F800ULL;
51DECLARE_ASM_CONST(8, uint64_t, mul3216) = 0x2000000420000004ULL;
52DECLARE_ASM_CONST(8, uint64_t, mul3215) = 0x2000000820000008ULL;
53DECLARE_ASM_CONST(8, uint64_t, mask24b) = 0x00FF0000FF0000FFULL;
54DECLARE_ASM_CONST(8, uint64_t, mask24g) = 0xFF0000FF0000FF00ULL;
55DECLARE_ASM_CONST(8, uint64_t, mask24r) = 0x0000FF0000FF0000ULL;
56DECLARE_ASM_CONST(8, uint64_t, mask24l) = 0x0000000000FFFFFFULL;
57DECLARE_ASM_CONST(8, uint64_t, mask24h) = 0x0000FFFFFF000000ULL;
58DECLARE_ASM_CONST(8, uint64_t, mask24hh) = 0xffff000000000000ULL;
59DECLARE_ASM_CONST(8, uint64_t, mask24hhh) = 0xffffffff00000000ULL;
60DECLARE_ASM_CONST(8, uint64_t, mask24hhhh) = 0xffffffffffff0000ULL;
61DECLARE_ASM_CONST(8, uint64_t, mask15b) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
62DECLARE_ASM_CONST(8, uint64_t, mask15rg) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
63DECLARE_ASM_CONST(8, uint64_t, mask15s) = 0xFFE0FFE0FFE0FFE0ULL;
64DECLARE_ASM_CONST(8, uint64_t, mask15g) = 0x03E003E003E003E0ULL;
65DECLARE_ASM_CONST(8, uint64_t, mask15r) = 0x7C007C007C007C00ULL;
66#define mask16b mask15b
67DECLARE_ASM_CONST(8, uint64_t, mask16g) = 0x07E007E007E007E0ULL;
68DECLARE_ASM_CONST(8, uint64_t, mask16r) = 0xF800F800F800F800ULL;
69DECLARE_ASM_CONST(8, uint64_t, red_16mask) = 0x0000f8000000f800ULL;
70DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
71DECLARE_ASM_CONST(8, uint64_t, blue_16mask) = 0x0000001f0000001fULL;
72DECLARE_ASM_CONST(8, uint64_t, red_15mask) = 0x00007c0000007c00ULL;
73DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
74DECLARE_ASM_CONST(8, uint64_t, blue_15mask) = 0x0000001f0000001fULL;
75
76#define RGB2YUV_SHIFT 8
77#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
78#define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
79#define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
80#define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
81#define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
82#define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
83#define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
84#define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
85#define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
86
652f5185 87// Note: We have C, MMX, MMXEXT, 3DNOW versions, there is no 3DNOW + MMXEXT one.
c0038328 88
239fdf1b 89#define COMPILE_TEMPLATE_MMXEXT 0
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90#define COMPILE_TEMPLATE_AMD3DNOW 0
91#define COMPILE_TEMPLATE_SSE2 0
92
93//MMX versions
94#undef RENAME
c16bfb14 95#define RENAME(a) a ## _mmx
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96#include "rgb2rgb_template.c"
97
652f5185 98// MMXEXT versions
c0038328 99#undef RENAME
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100#undef COMPILE_TEMPLATE_MMXEXT
101#define COMPILE_TEMPLATE_MMXEXT 1
c16bfb14 102#define RENAME(a) a ## _mmxext
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103#include "rgb2rgb_template.c"
104
105//SSE2 versions
106#undef RENAME
107#undef COMPILE_TEMPLATE_SSE2
108#define COMPILE_TEMPLATE_SSE2 1
c16bfb14 109#define RENAME(a) a ## _sse2
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110#include "rgb2rgb_template.c"
111
112//3DNOW versions
113#undef RENAME
239fdf1b 114#undef COMPILE_TEMPLATE_MMXEXT
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115#undef COMPILE_TEMPLATE_SSE2
116#undef COMPILE_TEMPLATE_AMD3DNOW
239fdf1b 117#define COMPILE_TEMPLATE_MMXEXT 0
522d65ba 118#define COMPILE_TEMPLATE_SSE2 0
c0038328 119#define COMPILE_TEMPLATE_AMD3DNOW 1
c16bfb14 120#define RENAME(a) a ## _3dnow
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121#include "rgb2rgb_template.c"
122
123/*
124 RGB15->RGB16 original by Strepto/Astral
125 ported to gcc & bugfixed : A'rpi
652f5185 126 MMXEXT, 3DNOW optimization by Nick Kurshev
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127 32-bit C version, and and&add trick by Michael Niedermayer
128*/
129
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130#endif /* HAVE_INLINE_ASM */
131
5a6e3c03 132av_cold void rgb2rgb_init_x86(void)
c0038328 133{
b2668c85 134#if HAVE_INLINE_ASM
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135 int cpu_flags = av_get_cpu_flags();
136
e0c6cce4 137 if (INLINE_MMX(cpu_flags))
c16bfb14 138 rgb2rgb_init_mmx();
e0c6cce4 139 if (INLINE_AMD3DNOW(cpu_flags))
c16bfb14 140 rgb2rgb_init_3dnow();
e0c6cce4 141 if (INLINE_MMXEXT(cpu_flags))
c16bfb14 142 rgb2rgb_init_mmxext();
e0c6cce4 143 if (INLINE_SSE2(cpu_flags))
c16bfb14 144 rgb2rgb_init_sse2();
b2668c85 145#endif /* HAVE_INLINE_ASM */
c0038328 146}