123f7258a8
The IJG convention is to format copyright notices as: Copyright (C) YYYY, Owner. We try to maintain this convention for any code that is part of the libjpeg API library (with the exception of preserving the copyright notices from Cendio's code verbatim, since those predate libjpeg-turbo.) Note that the phrase "All Rights Reserved" is no longer necessary, since all Buenos Aires Convention signatories signed onto the Berne Convention in 2000. However, our convention is to retain this phrase for any files that have a self-contained copyright header but to leave it off of any files that refer to another file for conditions of distribution and use. For instance, all of the non-SIMD files in the libjpeg API library refer to README.ijg, and the copyright message in that file contains "All Rights Reserved", so it is unnecessary to add it to the individual files. The TurboJPEG code retains my preferred formatting convention for copyright notices, which is based on that of VirtualGL (where the TurboJPEG API originated.)
97 lines
3.5 KiB
C
97 lines
3.5 KiB
C
/*
|
|
* AltiVec optimizations for libjpeg-turbo
|
|
*
|
|
* Copyright (C) 2015, 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.
|
|
*/
|
|
|
|
/* YCC --> RGB CONVERSION */
|
|
|
|
#include "jsimd_altivec.h"
|
|
|
|
|
|
#define F_0_344 22554 /* FIX(0.34414) */
|
|
#define F_0_714 46802 /* FIX(0.71414) */
|
|
#define F_1_402 91881 /* FIX(1.40200) */
|
|
#define F_1_772 116130 /* FIX(1.77200) */
|
|
#define F_0_402 (F_1_402 - 65536) /* FIX(1.40200) - FIX(1) */
|
|
#define F_0_285 (65536 - F_0_714) /* FIX(1) - FIX(0.71414) */
|
|
#define F_0_228 (131072 - F_1_772) /* FIX(2) - FIX(1.77200) */
|
|
|
|
#define SCALEBITS 16
|
|
#define ONE_HALF (1 << (SCALEBITS - 1))
|
|
|
|
#define RGB_INDEX0 {0,1,8,2,3,10,4,5,12,6,7,14,16,17,24,18}
|
|
#define RGB_INDEX1 {3,10,4,5,12,6,7,14,16,17,24,18,19,26,20,21}
|
|
#define RGB_INDEX2 {12,6,7,14,16,17,24,18,19,26,20,21,28,22,23,30}
|
|
#include "jdcolext-altivec.c"
|
|
#undef RGB_PIXELSIZE
|
|
|
|
#define RGB_PIXELSIZE EXT_RGB_PIXELSIZE
|
|
#define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extrgb_convert_altivec
|
|
#include "jdcolext-altivec.c"
|
|
#undef RGB_PIXELSIZE
|
|
#undef RGB_INDEX0
|
|
#undef RGB_INDEX1
|
|
#undef RGB_INDEX2
|
|
#undef jsimd_ycc_rgb_convert_altivec
|
|
|
|
#define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE
|
|
#define RGB_INDEX {0,1,8,9,2,3,10,11,4,5,12,13,6,7,14,15}
|
|
#define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extrgbx_convert_altivec
|
|
#include "jdcolext-altivec.c"
|
|
#undef RGB_PIXELSIZE
|
|
#undef RGB_INDEX
|
|
#undef jsimd_ycc_rgb_convert_altivec
|
|
|
|
#define RGB_PIXELSIZE EXT_BGR_PIXELSIZE
|
|
#define RGB_INDEX0 {8,1,0,10,3,2,12,5,4,14,7,6,24,17,16,26}
|
|
#define RGB_INDEX1 {3,2,12,5,4,14,7,6,24,17,16,26,19,18,28,21}
|
|
#define RGB_INDEX2 {4,14,7,6,24,17,16,26,19,18,28,21,20,30,23,22}
|
|
#define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extbgr_convert_altivec
|
|
#include "jdcolext-altivec.c"
|
|
#undef RGB_PIXELSIZE
|
|
#undef RGB_INDEX0
|
|
#undef RGB_INDEX1
|
|
#undef RGB_INDEX2
|
|
#undef jsimd_ycc_rgb_convert_altivec
|
|
|
|
#define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE
|
|
#define RGB_INDEX {8,1,0,9,10,3,2,11,12,5,4,13,14,7,6,15}
|
|
#define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extbgrx_convert_altivec
|
|
#include "jdcolext-altivec.c"
|
|
#undef RGB_PIXELSIZE
|
|
#undef RGB_INDEX
|
|
#undef jsimd_ycc_rgb_convert_altivec
|
|
|
|
#define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE
|
|
#define RGB_INDEX {9,8,1,0,11,10,3,2,13,12,5,4,15,14,7,6}
|
|
#define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extxbgr_convert_altivec
|
|
#include "jdcolext-altivec.c"
|
|
#undef RGB_PIXELSIZE
|
|
#undef RGB_INDEX
|
|
#undef jsimd_ycc_rgb_convert_altivec
|
|
|
|
#define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE
|
|
#define RGB_INDEX {9,0,1,8,11,2,3,10,13,4,5,12,15,6,7,14}
|
|
#define jsimd_ycc_rgb_convert_altivec jsimd_ycc_extxrgb_convert_altivec
|
|
#include "jdcolext-altivec.c"
|
|
#undef RGB_PIXELSIZE
|
|
#undef RGB_INDEX
|
|
#undef jsimd_ycc_rgb_convert_altivec
|