kc3-lang/libjpeg-turbo/simd/mips64/jcsample.h

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• Hash : 81b8c0ee
  Author :
  Date : 2019-12-17T14:18:35
  

  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
  

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• simd/mips64/jcsample.h

• /*
   * jcsample.h
   *
   * This file was part of the Independent JPEG Group's software:
   * Copyright (C) 1991-1996, Thomas G. Lane.
   * For conditions of distribution and use, see the accompanying README.ijg
   * file.
   */
  
  LOCAL(void)
  expand_right_edge(JSAMPARRAY image_data, int num_rows, JDIMENSION input_cols,
                    JDIMENSION output_cols)
  {
    register JSAMPROW ptr;
    register JSAMPLE pixval;
    register int count;
    int row;
    int numcols = (int)(output_cols - input_cols);
  
    if (numcols > 0) {
      for (row = 0; row < num_rows; row++) {
        ptr = image_data[row] + input_cols;
        pixval = ptr[-1];
        for (count = numcols; count > 0; count--)
          *ptr++ = pixval;
      }
    }
  }
  

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