jcgray-altivec.c (4013B)
1 /* 2 * AltiVec optimizations for libjpeg-turbo 3 * 4 * Copyright (C) 2014, D. R. Commander. All Rights Reserved. 5 * 6 * This software is provided 'as-is', without any express or implied 7 * warranty. In no event will the authors be held liable for any damages 8 * arising from the use of this software. 9 * 10 * Permission is granted to anyone to use this software for any purpose, 11 * including commercial applications, and to alter it and redistribute it 12 * freely, subject to the following restrictions: 13 * 14 * 1. The origin of this software must not be misrepresented; you must not 15 * claim that you wrote the original software. If you use this software 16 * in a product, an acknowledgment in the product documentation would be 17 * appreciated but is not required. 18 * 2. Altered source versions must be plainly marked as such, and must not be 19 * misrepresented as being the original software. 20 * 3. This notice may not be removed or altered from any source distribution. 21 */ 22 23 /* RGB --> GRAYSCALE CONVERSION */ 24 25 #include "jsimd_altivec.h" 26 27 28 #define F_0_114 7471 /* FIX(0.11400) */ 29 #define F_0_250 16384 /* FIX(0.25000) */ 30 #define F_0_299 19595 /* FIX(0.29900) */ 31 #define F_0_587 38470 /* FIX(0.58700) */ 32 #define F_0_337 (F_0_587 - F_0_250) /* FIX(0.58700) - FIX(0.25000) */ 33 34 #define SCALEBITS 16 35 #define ONE_HALF (1 << (SCALEBITS - 1)) 36 37 38 #define RGBG_INDEX0 \ 39 { 0, 1, 3, 4, 6, 7, 9, 10, 2, 1, 5, 4, 8, 7, 11, 10 } 40 #define RGBG_INDEX1 \ 41 { 12, 13, 15, 16, 18, 19, 21, 22, 14, 13, 17, 16, 20, 19, 23, 22 } 42 #define RGBG_INDEX2 \ 43 { 8, 9, 11, 12, 14, 15, 17, 18, 10, 9, 13, 12, 16, 15, 19, 18 } 44 #define RGBG_INDEX3 \ 45 { 4, 5, 7, 8, 10, 11, 13, 14, 6, 5, 9, 8, 12, 11, 15, 14 } 46 #include "jcgryext-altivec.c" 47 #undef RGB_PIXELSIZE 48 49 #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE 50 #define jsimd_rgb_gray_convert_altivec jsimd_extrgb_gray_convert_altivec 51 #include "jcgryext-altivec.c" 52 #undef RGB_PIXELSIZE 53 #undef RGBG_INDEX0 54 #undef RGBG_INDEX1 55 #undef RGBG_INDEX2 56 #undef RGBG_INDEX3 57 #undef jsimd_rgb_gray_convert_altivec 58 59 #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE 60 #define RGBG_INDEX \ 61 { 0, 1, 4, 5, 8, 9, 12, 13, 2, 1, 6, 5, 10, 9, 14, 13 } 62 #define jsimd_rgb_gray_convert_altivec jsimd_extrgbx_gray_convert_altivec 63 #include "jcgryext-altivec.c" 64 #undef RGB_PIXELSIZE 65 #undef RGBG_INDEX 66 #undef jsimd_rgb_gray_convert_altivec 67 68 #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE 69 #define RGBG_INDEX0 \ 70 { 2, 1, 5, 4, 8, 7, 11, 10, 0, 1, 3, 4, 6, 7, 9, 10 } 71 #define RGBG_INDEX1 \ 72 { 14, 13, 17, 16, 20, 19, 23, 22, 12, 13, 15, 16, 18, 19, 21, 22 } 73 #define RGBG_INDEX2 \ 74 { 10, 9, 13, 12, 16, 15, 19, 18, 8, 9, 11, 12, 14, 15, 17, 18 } 75 #define RGBG_INDEX3 \ 76 { 6, 5, 9, 8, 12, 11, 15, 14, 4, 5, 7, 8, 10, 11, 13, 14 } 77 #define jsimd_rgb_gray_convert_altivec jsimd_extbgr_gray_convert_altivec 78 #include "jcgryext-altivec.c" 79 #undef RGB_PIXELSIZE 80 #undef RGBG_INDEX0 81 #undef RGBG_INDEX1 82 #undef RGBG_INDEX2 83 #undef RGBG_INDEX3 84 #undef jsimd_rgb_gray_convert_altivec 85 86 #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE 87 #define RGBG_INDEX \ 88 { 2, 1, 6, 5, 10, 9, 14, 13, 0, 1, 4, 5, 8, 9, 12, 13 } 89 #define jsimd_rgb_gray_convert_altivec jsimd_extbgrx_gray_convert_altivec 90 #include "jcgryext-altivec.c" 91 #undef RGB_PIXELSIZE 92 #undef RGBG_INDEX 93 #undef jsimd_rgb_gray_convert_altivec 94 95 #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE 96 #define RGBG_INDEX \ 97 { 3, 2, 7, 6, 11, 10, 15, 14, 1, 2, 5, 6, 9, 10, 13, 14 } 98 #define jsimd_rgb_gray_convert_altivec jsimd_extxbgr_gray_convert_altivec 99 #include "jcgryext-altivec.c" 100 #undef RGB_PIXELSIZE 101 #undef RGBG_INDEX 102 #undef jsimd_rgb_gray_convert_altivec 103 104 #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE 105 #define RGBG_INDEX \ 106 { 1, 2, 5, 6, 9, 10, 13, 14, 3, 2, 7, 6, 11, 10, 15, 14 } 107 #define jsimd_rgb_gray_convert_altivec jsimd_extxrgb_gray_convert_altivec 108 #include "jcgryext-altivec.c" 109 #undef RGB_PIXELSIZE 110 #undef RGBG_INDEX 111 #undef jsimd_rgb_gray_convert_altivec