1 /* 2 * AltiVec optimizations for libjpeg-turbo 3 * 4 * Copyright (C) 2015, 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 /* YCC --> RGB CONVERSION */ 24 25 #include "jsimd_altivec.h" 26 27 28 #define F_0_344 22554 /* FIX(0.34414) */ 29 #define F_0_714 46802 /* FIX(0.71414) */ 30 #define F_1_402 91881 /* FIX(1.40200) */ 31 #define F_1_772 116130 /* FIX(1.77200) */ 32 #define F_0_402 (F_1_402 - 65536) /* FIX(1.40200) - FIX(1) */ 33 #define F_0_285 (65536 - F_0_714) /* FIX(1) - FIX(0.71414) */ 34 #define F_0_228 (131072 - F_1_772) /* FIX(2) - FIX(1.77200) */ 35 36 #define SCALEBITS 16 37 #define ONE_HALF (1 << (SCALEBITS - 1)) 38 39 #define RGB_INDEX0 {0,1,8,2,3,10,4,5,12,6,7,14,16,17,24,18} 40 #define RGB_INDEX1 {3,10,4,5,12,6,7,14,16,17,24,18,19,26,20,21} 41 #define RGB_INDEX2 {12,6,7,14,16,17,24,18,19,26,20,21,28,22,23,30} 42 #include "jdcolext-altivec.c" 43 #undef RGB_PIXELSIZE 44 45 #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE 46 #define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extrgb_convert_altivec 47 #include "jdcolext-altivec.c" 48 #undef RGB_PIXELSIZE 49 #undef RGB_INDEX0 50 #undef RGB_INDEX1 51 #undef RGB_INDEX2 52 #undef jsimd_ycc_rgb_convert_altivec 53 54 #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE 55 #define RGB_INDEX {0,1,8,9,2,3,10,11,4,5,12,13,6,7,14,15} 56 #define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extrgbx_convert_altivec 57 #include "jdcolext-altivec.c" 58 #undef RGB_PIXELSIZE 59 #undef RGB_INDEX 60 #undef jsimd_ycc_rgb_convert_altivec 61 62 #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE 63 #define RGB_INDEX0 {8,1,0,10,3,2,12,5,4,14,7,6,24,17,16,26} 64 #define RGB_INDEX1 {3,2,12,5,4,14,7,6,24,17,16,26,19,18,28,21} 65 #define RGB_INDEX2 {4,14,7,6,24,17,16,26,19,18,28,21,20,30,23,22} 66 #define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extbgr_convert_altivec 67 #include "jdcolext-altivec.c" 68 #undef RGB_PIXELSIZE 69 #undef RGB_INDEX0 70 #undef RGB_INDEX1 71 #undef RGB_INDEX2 72 #undef jsimd_ycc_rgb_convert_altivec 73 74 #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE 75 #define RGB_INDEX {8,1,0,9,10,3,2,11,12,5,4,13,14,7,6,15} 76 #define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extbgrx_convert_altivec 77 #include "jdcolext-altivec.c" 78 #undef RGB_PIXELSIZE 79 #undef RGB_INDEX 80 #undef jsimd_ycc_rgb_convert_altivec 81 82 #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE 83 #define RGB_INDEX {9,8,1,0,11,10,3,2,13,12,5,4,15,14,7,6} 84 #define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extxbgr_convert_altivec 85 #include "jdcolext-altivec.c" 86 #undef RGB_PIXELSIZE 87 #undef RGB_INDEX 88 #undef jsimd_ycc_rgb_convert_altivec 89 90 #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE 91 #define RGB_INDEX {9,0,1,8,11,2,3,10,13,4,5,12,15,6,7,14} 92 #define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extxrgb_convert_altivec 93 #include "jdcolext-altivec.c" 94 #undef RGB_PIXELSIZE 95 #undef RGB_INDEX 96 #undef jsimd_ycc_rgb_convert_altivec 97
