DRC | b1fec4f | 2014-12-22 14:10:33 +0000 | [diff] [blame] | 1 | /* |
| 2 | * AltiVec optimizations for libjpeg-turbo |
| 3 | * |
| 4 | * Copyright (C) 2014, D. R. Commander. |
| 5 | * All rights reserved. |
| 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 | |
DRC | b1fec4f | 2014-12-22 14:10:33 +0000 | [diff] [blame] | 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 |