| /* |
| * 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 |
