jdmerge-altivec.c

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Author : DRC
Date : 2018-03-17 15:14:35
Hash : 293263c3
Message : 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.

simd/powerpc/jdmerge-altivec.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.
 */

/* MERGED YCC --> RGB CONVERSION AND UPSAMPLING */

#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 "jdmrgext-altivec.c"
#undef RGB_PIXELSIZE

#define RGB_PIXELSIZE  EXT_RGB_PIXELSIZE
#define jsimd_h2v1_merged_upsample_altivec \
  jsimd_h2v1_extrgb_merged_upsample_altivec
#define jsimd_h2v2_merged_upsample_altivec \
  jsimd_h2v2_extrgb_merged_upsample_altivec
#include "jdmrgext-altivec.c"
#undef RGB_PIXELSIZE
#undef RGB_INDEX0
#undef RGB_INDEX1
#undef RGB_INDEX2
#undef jsimd_h2v1_merged_upsample_altivec
#undef jsimd_h2v2_merged_upsample_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_h2v1_merged_upsample_altivec \
  jsimd_h2v1_extrgbx_merged_upsample_altivec
#define jsimd_h2v2_merged_upsample_altivec \
  jsimd_h2v2_extrgbx_merged_upsample_altivec
#include "jdmrgext-altivec.c"
#undef RGB_PIXELSIZE
#undef RGB_INDEX
#undef jsimd_h2v1_merged_upsample_altivec
#undef jsimd_h2v2_merged_upsample_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_h2v1_merged_upsample_altivec \
  jsimd_h2v1_extbgr_merged_upsample_altivec
#define jsimd_h2v2_merged_upsample_altivec \
  jsimd_h2v2_extbgr_merged_upsample_altivec
#include "jdmrgext-altivec.c"
#undef RGB_PIXELSIZE
#undef RGB_INDEX0
#undef RGB_INDEX1
#undef RGB_INDEX2
#undef jsimd_h2v1_merged_upsample_altivec
#undef jsimd_h2v2_merged_upsample_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_h2v1_merged_upsample_altivec \
  jsimd_h2v1_extbgrx_merged_upsample_altivec
#define jsimd_h2v2_merged_upsample_altivec \
  jsimd_h2v2_extbgrx_merged_upsample_altivec
#include "jdmrgext-altivec.c"
#undef RGB_PIXELSIZE
#undef RGB_INDEX
#undef jsimd_h2v1_merged_upsample_altivec
#undef jsimd_h2v2_merged_upsample_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_h2v1_merged_upsample_altivec \
  jsimd_h2v1_extxbgr_merged_upsample_altivec
#define jsimd_h2v2_merged_upsample_altivec \
  jsimd_h2v2_extxbgr_merged_upsample_altivec
#include "jdmrgext-altivec.c"
#undef RGB_PIXELSIZE
#undef RGB_INDEX
#undef jsimd_h2v1_merged_upsample_altivec
#undef jsimd_h2v2_merged_upsample_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_h2v1_merged_upsample_altivec \
  jsimd_h2v1_extxrgb_merged_upsample_altivec
#define jsimd_h2v2_merged_upsample_altivec \
  jsimd_h2v2_extxrgb_merged_upsample_altivec
#include "jdmrgext-altivec.c"
#undef RGB_PIXELSIZE
#undef RGB_INDEX
#undef jsimd_h2v1_merged_upsample_altivec
#undef jsimd_h2v2_merged_upsample_altivec

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

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