kc3-lang/libjpeg-turbo/simd/powerpc/jcgray-altivec.c

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• Hash : 293263c3
  Author :
  Date : 2018-03-17T15:14:35
  

  Format preprocessor macros more consistently
  
  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.
  

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• simd/powerpc/jcgray-altivec.c

• /*
   * 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
  

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