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 --> YCC CONVERSION */ 24 25 #include "jsimd_altivec.h" 26 27 28 #define F_0_081 5329 /* FIX(0.08131) */ 29 #define F_0_114 7471 /* FIX(0.11400) */ 30 #define F_0_168 11059 /* FIX(0.16874) */ 31 #define F_0_250 16384 /* FIX(0.25000) */ 32 #define F_0_299 19595 /* FIX(0.29900) */ 33 #define F_0_331 21709 /* FIX(0.33126) */ 34 #define F_0_418 27439 /* FIX(0.41869) */ 35 #define F_0_500 32768 /* FIX(0.50000) */ 36 #define F_0_587 38470 /* FIX(0.58700) */ 37 #define F_0_337 (F_0_587 - F_0_250) /* FIX(0.58700) - FIX(0.25000) */ 38 39 #define SCALEBITS 16 40 #define ONE_HALF (1 << (SCALEBITS - 1)) 41 42 43 #define RGBG_INDEX0 {0,1,3,4,6,7,9,10,2,1,5,4,8,7,11,10} 44 #define RGBG_INDEX1 {12,13,15,16,18,19,21,22,14,13,17,16,20,19,23,22} 45 #define RGBG_INDEX2 {8,9,11,12,14,15,17,18,10,9,13,12,16,15,19,18} 46 #define RGBG_INDEX3 {4,5,7,8,10,11,13,14,6,5,9,8,12,11,15,14} 47 #include "jccolext-altivec.c" 48 #undef RGB_PIXELSIZE 49 50 #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE 51 #define jsimd_rgb_ycc_convert_altivec jsimd_extrgb_ycc_convert_altivec 52 #include "jccolext-altivec.c" 53 #undef RGB_PIXELSIZE 54 #undef RGBG_INDEX0 55 #undef RGBG_INDEX1 56 #undef RGBG_INDEX2 57 #undef RGBG_INDEX3 58 #undef jsimd_rgb_ycc_convert_altivec 59 60 #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE 61 #define RGBG_INDEX {0,1,4,5,8,9,12,13,2,1,6,5,10,9,14,13} 62 #define jsimd_rgb_ycc_convert_altivec jsimd_extrgbx_ycc_convert_altivec 63 #include "jccolext-altivec.c" 64 #undef RGB_PIXELSIZE 65 #undef RGBG_INDEX 66 #undef jsimd_rgb_ycc_convert_altivec 67 68 #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE 69 #define RGBG_INDEX0 {2,1,5,4,8,7,11,10,0,1,3,4,6,7,9,10} 70 #define RGBG_INDEX1 {14,13,17,16,20,19,23,22,12,13,15,16,18,19,21,22} 71 #define RGBG_INDEX2 {10,9,13,12,16,15,19,18,8,9,11,12,14,15,17,18} 72 #define RGBG_INDEX3 {6,5,9,8,12,11,15,14,4,5,7,8,10,11,13,14} 73 #define jsimd_rgb_ycc_convert_altivec jsimd_extbgr_ycc_convert_altivec 74 #include "jccolext-altivec.c" 75 #undef RGB_PIXELSIZE 76 #undef RGBG_INDEX0 77 #undef RGBG_INDEX1 78 #undef RGBG_INDEX2 79 #undef RGBG_INDEX3 80 #undef jsimd_rgb_ycc_convert_altivec 81 82 #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE 83 #define RGBG_INDEX {2,1,6,5,10,9,14,13,0,1,4,5,8,9,12,13} 84 #define jsimd_rgb_ycc_convert_altivec jsimd_extbgrx_ycc_convert_altivec 85 #include "jccolext-altivec.c" 86 #undef RGB_PIXELSIZE 87 #undef RGBG_INDEX 88 #undef jsimd_rgb_ycc_convert_altivec 89 90 #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE 91 #define RGBG_INDEX {3,2,7,6,11,10,15,14,1,2,5,6,9,10,13,14} 92 #define jsimd_rgb_ycc_convert_altivec jsimd_extxbgr_ycc_convert_altivec 93 #include "jccolext-altivec.c" 94 #undef RGB_PIXELSIZE 95 #undef RGBG_INDEX 96 #undef jsimd_rgb_ycc_convert_altivec 97 98 #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE 99 #define RGBG_INDEX {1,2,5,6,9,10,13,14,3,2,7,6,11,10,15,14} 100 #define jsimd_rgb_ycc_convert_altivec jsimd_extxrgb_ycc_convert_altivec 101 #include "jccolext-altivec.c" 102 #undef RGB_PIXELSIZE 103 #undef RGBG_INDEX 104 #undef jsimd_rgb_ycc_convert_altivec 105
