| /* |
| * AltiVec optimizations for libjpeg-turbo |
| * |
| * Copyright (C) 2014, D. R. Commander. |
| * All rights reserved. |
| * This software is provided 'as-is', without any express or implied |
| * warranty. In no event will the authors be held liable for any damages |
| * arising from the use of this software. |
| * |
| * Permission is granted to anyone to use this software for any purpose, |
| * including commercial applications, and to alter it and redistribute it |
| * freely, subject to the following restrictions: |
| * |
| * 1. The origin of this software must not be misrepresented; you must not |
| * claim that you wrote the original software. If you use this software |
| * in a product, an acknowledgment in the product documentation would be |
| * appreciated but is not required. |
| * 2. Altered source versions must be plainly marked as such, and must not be |
| * misrepresented as being the original software. |
| * 3. This notice may not be removed or altered from any source distribution. |
| */ |
| |
| /* RGB --> GRAYSCALE CONVERSION */ |
| |
| #include "jsimd_altivec.h" |
| |
| |
| #define F_0_114 7471 /* FIX(0.11400) */ |
| #define F_0_250 16384 /* FIX(0.25000) */ |
| #define F_0_299 19595 /* FIX(0.29900) */ |
| #define F_0_587 38470 /* FIX(0.58700) */ |
| #define F_0_337 (F_0_587 - F_0_250) /* FIX(0.58700) - FIX(0.25000) */ |
| |
| #define SCALEBITS 16 |
| #define ONE_HALF (1 << (SCALEBITS - 1)) |
| |
| |
| #define RGBG_INDEX0 {0,1,3,4,6,7,9,10,2,1,5,4,8,7,11,10} |
| #define RGBG_INDEX1 {12,13,15,16,18,19,21,22,14,13,17,16,20,19,23,22} |
| #define RGBG_INDEX2 {8,9,11,12,14,15,17,18,10,9,13,12,16,15,19,18} |
| #define RGBG_INDEX3 {4,5,7,8,10,11,13,14,6,5,9,8,12,11,15,14} |
| #include "jcgryext-altivec.c" |
| #undef RGB_PIXELSIZE |
| |
| #define RGB_PIXELSIZE EXT_RGB_PIXELSIZE |
| #define jsimd_rgb_gray_convert_altivec jsimd_extrgb_gray_convert_altivec |
| #include "jcgryext-altivec.c" |
| #undef RGB_PIXELSIZE |
| #undef RGBG_INDEX0 |
| #undef RGBG_INDEX1 |
| #undef RGBG_INDEX2 |
| #undef RGBG_INDEX3 |
| #undef jsimd_rgb_gray_convert_altivec |
| |
| #define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE |
| #define RGBG_INDEX {0,1,4,5,8,9,12,13,2,1,6,5,10,9,14,13} |
| #define jsimd_rgb_gray_convert_altivec jsimd_extrgbx_gray_convert_altivec |
| #include "jcgryext-altivec.c" |
| #undef RGB_PIXELSIZE |
| #undef RGBG_INDEX |
| #undef jsimd_rgb_gray_convert_altivec |
| |
| #define RGB_PIXELSIZE EXT_BGR_PIXELSIZE |
| #define RGBG_INDEX0 {2,1,5,4,8,7,11,10,0,1,3,4,6,7,9,10} |
| #define RGBG_INDEX1 {14,13,17,16,20,19,23,22,12,13,15,16,18,19,21,22} |
| #define RGBG_INDEX2 {10,9,13,12,16,15,19,18,8,9,11,12,14,15,17,18} |
| #define RGBG_INDEX3 {6,5,9,8,12,11,15,14,4,5,7,8,10,11,13,14} |
| #define jsimd_rgb_gray_convert_altivec jsimd_extbgr_gray_convert_altivec |
| #include "jcgryext-altivec.c" |
| #undef RGB_PIXELSIZE |
| #undef RGBG_INDEX0 |
| #undef RGBG_INDEX1 |
| #undef RGBG_INDEX2 |
| #undef RGBG_INDEX3 |
| #undef jsimd_rgb_gray_convert_altivec |
| |
| #define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE |
| #define RGBG_INDEX {2,1,6,5,10,9,14,13,0,1,4,5,8,9,12,13} |
| #define jsimd_rgb_gray_convert_altivec jsimd_extbgrx_gray_convert_altivec |
| #include "jcgryext-altivec.c" |
| #undef RGB_PIXELSIZE |
| #undef RGBG_INDEX |
| #undef jsimd_rgb_gray_convert_altivec |
| |
| #define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE |
| #define RGBG_INDEX {3,2,7,6,11,10,15,14,1,2,5,6,9,10,13,14} |
| #define jsimd_rgb_gray_convert_altivec jsimd_extxbgr_gray_convert_altivec |
| #include "jcgryext-altivec.c" |
| #undef RGB_PIXELSIZE |
| #undef RGBG_INDEX |
| #undef jsimd_rgb_gray_convert_altivec |
| |
| #define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE |
| #define RGBG_INDEX {1,2,5,6,9,10,13,14,3,2,7,6,11,10,15,14} |
| #define jsimd_rgb_gray_convert_altivec jsimd_extxrgb_gray_convert_altivec |
| #include "jcgryext-altivec.c" |
| #undef RGB_PIXELSIZE |
| #undef RGBG_INDEX |
| #undef jsimd_rgb_gray_convert_altivec |
