293263c352
Within the libjpeg API code, it seems to be more the convention than not to separate the macro name and value by two or more spaces, which improves general readability. Making this consistent across all of libjpeg-turbo is less about my individual preferences and more about making it easy to automatically detect variations from our chosen formatting convention. I intend to release the script I'm using to validate this stuff, once it matures and stabilizes a bit.
112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
/*
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* AltiVec optimizations for libjpeg-turbo
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*
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* Copyright (C) 2014, D. R. Commander. All Rights Reserved.
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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/* RGB --> GRAYSCALE CONVERSION */
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#include "jsimd_altivec.h"
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#define F_0_114 7471 /* FIX(0.11400) */
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#define F_0_250 16384 /* FIX(0.25000) */
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#define F_0_299 19595 /* FIX(0.29900) */
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#define F_0_587 38470 /* FIX(0.58700) */
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#define F_0_337 (F_0_587 - F_0_250) /* FIX(0.58700) - FIX(0.25000) */
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#define SCALEBITS 16
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#define ONE_HALF (1 << (SCALEBITS - 1))
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#define RGBG_INDEX0 \
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{ 0, 1, 3, 4, 6, 7, 9, 10, 2, 1, 5, 4, 8, 7, 11, 10 }
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#define RGBG_INDEX1 \
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{ 12, 13, 15, 16, 18, 19, 21, 22, 14, 13, 17, 16, 20, 19, 23, 22 }
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#define RGBG_INDEX2 \
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{ 8, 9, 11, 12, 14, 15, 17, 18, 10, 9, 13, 12, 16, 15, 19, 18 }
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#define RGBG_INDEX3 \
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{ 4, 5, 7, 8, 10, 11, 13, 14, 6, 5, 9, 8, 12, 11, 15, 14 }
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#include "jcgryext-altivec.c"
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#undef RGB_PIXELSIZE
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#define RGB_PIXELSIZE EXT_RGB_PIXELSIZE
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#define jsimd_rgb_gray_convert_altivec jsimd_extrgb_gray_convert_altivec
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#include "jcgryext-altivec.c"
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX0
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#undef RGBG_INDEX1
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#undef RGBG_INDEX2
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#undef RGBG_INDEX3
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#undef jsimd_rgb_gray_convert_altivec
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#define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE
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#define RGBG_INDEX \
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{ 0, 1, 4, 5, 8, 9, 12, 13, 2, 1, 6, 5, 10, 9, 14, 13 }
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#define jsimd_rgb_gray_convert_altivec jsimd_extrgbx_gray_convert_altivec
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#include "jcgryext-altivec.c"
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX
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#undef jsimd_rgb_gray_convert_altivec
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#define RGB_PIXELSIZE EXT_BGR_PIXELSIZE
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#define RGBG_INDEX0 \
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{ 2, 1, 5, 4, 8, 7, 11, 10, 0, 1, 3, 4, 6, 7, 9, 10 }
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#define RGBG_INDEX1 \
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{ 14, 13, 17, 16, 20, 19, 23, 22, 12, 13, 15, 16, 18, 19, 21, 22 }
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#define RGBG_INDEX2 \
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{ 10, 9, 13, 12, 16, 15, 19, 18, 8, 9, 11, 12, 14, 15, 17, 18 }
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#define RGBG_INDEX3 \
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{ 6, 5, 9, 8, 12, 11, 15, 14, 4, 5, 7, 8, 10, 11, 13, 14 }
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#define jsimd_rgb_gray_convert_altivec jsimd_extbgr_gray_convert_altivec
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#include "jcgryext-altivec.c"
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX0
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#undef RGBG_INDEX1
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#undef RGBG_INDEX2
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#undef RGBG_INDEX3
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#undef jsimd_rgb_gray_convert_altivec
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#define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE
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#define RGBG_INDEX \
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{ 2, 1, 6, 5, 10, 9, 14, 13, 0, 1, 4, 5, 8, 9, 12, 13 }
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#define jsimd_rgb_gray_convert_altivec jsimd_extbgrx_gray_convert_altivec
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#include "jcgryext-altivec.c"
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX
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#undef jsimd_rgb_gray_convert_altivec
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#define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE
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#define RGBG_INDEX \
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{ 3, 2, 7, 6, 11, 10, 15, 14, 1, 2, 5, 6, 9, 10, 13, 14 }
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#define jsimd_rgb_gray_convert_altivec jsimd_extxbgr_gray_convert_altivec
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#include "jcgryext-altivec.c"
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX
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#undef jsimd_rgb_gray_convert_altivec
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#define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE
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#define RGBG_INDEX \
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{ 1, 2, 5, 6, 9, 10, 13, 14, 3, 2, 7, 6, 11, 10, 15, 14 }
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#define jsimd_rgb_gray_convert_altivec jsimd_extxrgb_gray_convert_altivec
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#include "jcgryext-altivec.c"
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX
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#undef jsimd_rgb_gray_convert_altivec
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