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 {0,1,3,4,6,7,9,10,2,1,5,4,8,7,11,10} 39 #define RGBG_INDEX1 {12,13,15,16,18,19,21,22,14,13,17,16,20,19,23,22} 40 #define RGBG_INDEX2 {8,9,11,12,14,15,17,18,10,9,13,12,16,15,19,18} 41 #define RGBG_INDEX3 {4,5,7,8,10,11,13,14,6,5,9,8,12,11,15,14} 42 #include "jcgryext-altivec.c" 43 #undef RGB_PIXELSIZE 44 45 #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE 46 #define jsimd_rgb_gray_convert_altivec jsimd_extrgb_gray_convert_altivec 47 #include "jcgryext-altivec.c" 48 #undef RGB_PIXELSIZE 49 #undef RGBG_INDEX0 50 #undef RGBG_INDEX1 51 #undef RGBG_INDEX2 52 #undef RGBG_INDEX3 53 #undef jsimd_rgb_gray_convert_altivec 54 55 #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE 56 #define RGBG_INDEX {0,1,4,5,8,9,12,13,2,1,6,5,10,9,14,13} 57 #define jsimd_rgb_gray_convert_altivec jsimd_extrgbx_gray_convert_altivec 58 #include "jcgryext-altivec.c" 59 #undef RGB_PIXELSIZE 60 #undef RGBG_INDEX 61 #undef jsimd_rgb_gray_convert_altivec 62 63 #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE 64 #define RGBG_INDEX0 {2,1,5,4,8,7,11,10,0,1,3,4,6,7,9,10} 65 #define RGBG_INDEX1 {14,13,17,16,20,19,23,22,12,13,15,16,18,19,21,22} 66 #define RGBG_INDEX2 {10,9,13,12,16,15,19,18,8,9,11,12,14,15,17,18} 67 #define RGBG_INDEX3 {6,5,9,8,12,11,15,14,4,5,7,8,10,11,13,14} 68 #define jsimd_rgb_gray_convert_altivec jsimd_extbgr_gray_convert_altivec 69 #include "jcgryext-altivec.c" 70 #undef RGB_PIXELSIZE 71 #undef RGBG_INDEX0 72 #undef RGBG_INDEX1 73 #undef RGBG_INDEX2 74 #undef RGBG_INDEX3 75 #undef jsimd_rgb_gray_convert_altivec 76 77 #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE 78 #define RGBG_INDEX {2,1,6,5,10,9,14,13,0,1,4,5,8,9,12,13} 79 #define jsimd_rgb_gray_convert_altivec jsimd_extbgrx_gray_convert_altivec 80 #include "jcgryext-altivec.c" 81 #undef RGB_PIXELSIZE 82 #undef RGBG_INDEX 83 #undef jsimd_rgb_gray_convert_altivec 84 85 #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE 86 #define RGBG_INDEX {3,2,7,6,11,10,15,14,1,2,5,6,9,10,13,14} 87 #define jsimd_rgb_gray_convert_altivec jsimd_extxbgr_gray_convert_altivec 88 #include "jcgryext-altivec.c" 89 #undef RGB_PIXELSIZE 90 #undef RGBG_INDEX 91 #undef jsimd_rgb_gray_convert_altivec 92 93 #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE 94 #define RGBG_INDEX {1,2,5,6,9,10,13,14,3,2,7,6,11,10,15,14} 95 #define jsimd_rgb_gray_convert_altivec jsimd_extxrgb_gray_convert_altivec 96 #include "jcgryext-altivec.c" 97 #undef RGB_PIXELSIZE 98 #undef RGBG_INDEX 99 #undef jsimd_rgb_gray_convert_altivec 100