kc3-lang/libjpeg-turbo/simd/mips64/jcgray-mmi.c

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• Author : DRC
  Date : 2019-12-17 14:18:35
  Hash : 81b8c0ee
  Message : Loongson MMI: Merge with MIPS64/add auto-detection Modern Loongson processors are MIPS64-compatible, and MMI instructions are now supported in the mainline of GCC. Thus, this commit adds compile-time and run-time auto-detection of MMI instructions and moves the MMI SIMD extensions for libjpeg-turbo from simd/loongson/ to simd/mips64/. That will allow MMI and MSA instructions to co-exist in the same build once #377 has been integrated. Based on: https://github.com/FlyGoat/libjpeg-turbo/commit/82953ddd61549428f58066f7eff0d60ce7429865 Closes #383

• simd/mips64/jcgray-mmi.c

• /*
   * Loongson MMI optimizations for libjpeg-turbo
   *
   * Copyright (C) 2011, 2014, D. R. Commander.  All Rights Reserved.
   * Copyright (C) 2016-2018, Loongson Technology Corporation Limited, BeiJing.
   *                          All Rights Reserved.
   * Authors:  ZhangLixia <zhanglixia-hf@loongson.cn>
   *
   * 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_mmi.h"
  
  
  #define F_0_114  ((short)7471)                /* FIX(0.11400) */
  #define F_0_250  ((short)16384)               /* FIX(0.25000) */
  #define F_0_299  ((short)19595)               /* FIX(0.29900) */
  #define F_0_587  ((short)38470)               /* FIX(0.58700) */
  #define F_0_337  ((short)(F_0_587 - F_0_250)) /* FIX(0.58700) - FIX(0.25000) */
  
  enum const_index {
    index_PD_ONEHALF,
    index_PW_F0299_F0337,
    index_PW_F0114_F0250
  };
  
  static uint64_t const_value[] = {
    _uint64_set_pi32((int)(1 << (SCALEBITS - 1)), (int)(1 << (SCALEBITS - 1))),
    _uint64_set_pi16(F_0_337, F_0_299, F_0_337, F_0_299),
    _uint64_set_pi16(F_0_250, F_0_114, F_0_250, F_0_114)
  };
  
  #define get_const_value(index)  (*(__m64 *)&const_value[index])
  
  #define PD_ONEHALF       get_const_value(index_PD_ONEHALF)
  #define PW_F0299_F0337   get_const_value(index_PW_F0299_F0337)
  #define PW_F0114_F0250   get_const_value(index_PW_F0114_F0250)
  
  
  #include "jcgryext-mmi.c"
  #undef RGB_RED
  #undef RGB_GREEN
  #undef RGB_BLUE
  #undef RGB_PIXELSIZE
  
  #define RGB_RED  EXT_RGB_RED
  #define RGB_GREEN  EXT_RGB_GREEN
  #define RGB_BLUE  EXT_RGB_BLUE
  #define RGB_PIXELSIZE  EXT_RGB_PIXELSIZE
  #define jsimd_rgb_gray_convert_mmi  jsimd_extrgb_gray_convert_mmi
  #include "jcgryext-mmi.c"
  #undef RGB_RED
  #undef RGB_GREEN
  #undef RGB_BLUE
  #undef RGB_PIXELSIZE
  #undef jsimd_rgb_gray_convert_mmi
  
  #define RGB_RED  EXT_RGBX_RED
  #define RGB_GREEN  EXT_RGBX_GREEN
  #define RGB_BLUE  EXT_RGBX_BLUE
  #define RGB_PIXELSIZE  EXT_RGBX_PIXELSIZE
  #define jsimd_rgb_gray_convert_mmi  jsimd_extrgbx_gray_convert_mmi
  #include "jcgryext-mmi.c"
  #undef RGB_RED
  #undef RGB_GREEN
  #undef RGB_BLUE
  #undef RGB_PIXELSIZE
  #undef jsimd_rgb_gray_convert_mmi
  
  #define RGB_RED  EXT_BGR_RED
  #define RGB_GREEN  EXT_BGR_GREEN
  #define RGB_BLUE  EXT_BGR_BLUE
  #define RGB_PIXELSIZE  EXT_BGR_PIXELSIZE
  #define jsimd_rgb_gray_convert_mmi  jsimd_extbgr_gray_convert_mmi
  #include "jcgryext-mmi.c"
  #undef RGB_RED
  #undef RGB_GREEN
  #undef RGB_BLUE
  #undef RGB_PIXELSIZE
  #undef jsimd_rgb_gray_convert_mmi
  
  #define RGB_RED  EXT_BGRX_RED
  #define RGB_GREEN  EXT_BGRX_GREEN
  #define RGB_BLUE  EXT_BGRX_BLUE
  #define RGB_PIXELSIZE  EXT_BGRX_PIXELSIZE
  #define jsimd_rgb_gray_convert_mmi  jsimd_extbgrx_gray_convert_mmi
  #include "jcgryext-mmi.c"
  #undef RGB_RED
  #undef RGB_GREEN
  #undef RGB_BLUE
  #undef RGB_PIXELSIZE
  #undef jsimd_rgb_gray_convert_mmi
  
  #define RGB_RED  EXT_XBGR_RED
  #define RGB_GREEN  EXT_XBGR_GREEN
  #define RGB_BLUE  EXT_XBGR_BLUE
  #define RGB_PIXELSIZE  EXT_XBGR_PIXELSIZE
  #define jsimd_rgb_gray_convert_mmi  jsimd_extxbgr_gray_convert_mmi
  #include "jcgryext-mmi.c"
  #undef RGB_RED
  #undef RGB_GREEN
  #undef RGB_BLUE
  #undef RGB_PIXELSIZE
  #undef jsimd_rgb_gray_convert_mmi
  
  #define RGB_RED  EXT_XRGB_RED
  #define RGB_GREEN  EXT_XRGB_GREEN
  #define RGB_BLUE  EXT_XRGB_BLUE
  #define RGB_PIXELSIZE  EXT_XRGB_PIXELSIZE
  #define jsimd_rgb_gray_convert_mmi  jsimd_extxrgb_gray_convert_mmi
  #include "jcgryext-mmi.c"
  #undef RGB_RED
  #undef RGB_GREEN
  #undef RGB_BLUE
  #undef RGB_PIXELSIZE
  #undef jsimd_rgb_gray_convert_mmi