kc3-lang/libjpeg-turbo/jsimddct.h

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• Hash : bd49803f
  Author :
  Date : 2016-02-19T08:53:33
  

  Use consistent/modern code formatting for pointers
  
  The convention used by libjpeg:
  
      type * variable;
  
  is not very common anymore, because it looks too much like
  multiplication.  Some (particularly C++ programmers) prefer to tuck the
  pointer symbol against the type:
  
      type* variable;
  
  to emphasize that a pointer to a type is effectively a new type.
  However, this can also be confusing, since defining multiple variables
  on the same line would not work properly:
  
      type* variable1, variable2;  /* Only variable1 is actually a
                                      pointer. */
  
  This commit reformats the entirety of the libjpeg-turbo code base so
  that it uses the same code formatting convention for pointers that the
  TurboJPEG API code uses:
  
      type *variable1, *variable2;
  
  This seems to be the most common convention among C programmers, and
  it is the convention used by other codec libraries, such as libpng and
  libtiff.
  

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• jsimddct.h

• /*
   * jsimddct.h
   *
   * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
   *
   * Based on the x86 SIMD extension for IJG JPEG library,
   * Copyright (C) 1999-2006, MIYASAKA Masaru.
   * For conditions of distribution and use, see copyright notice in jsimdext.inc
   *
   */
  
  EXTERN(int) jsimd_can_convsamp (void);
  EXTERN(int) jsimd_can_convsamp_float (void);
  
  EXTERN(void) jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col,
                               DCTELEM *workspace);
  EXTERN(void) jsimd_convsamp_float (JSAMPARRAY sample_data,
                                     JDIMENSION start_col,
                                     FAST_FLOAT *workspace);
  
  EXTERN(int) jsimd_can_fdct_islow (void);
  EXTERN(int) jsimd_can_fdct_ifast (void);
  EXTERN(int) jsimd_can_fdct_float (void);
  
  EXTERN(void) jsimd_fdct_islow (DCTELEM *data);
  EXTERN(void) jsimd_fdct_ifast (DCTELEM *data);
  EXTERN(void) jsimd_fdct_float (FAST_FLOAT *data);
  
  EXTERN(int) jsimd_can_quantize (void);
  EXTERN(int) jsimd_can_quantize_float (void);
  
  EXTERN(void) jsimd_quantize (JCOEFPTR coef_block, DCTELEM *divisors,
                               DCTELEM *workspace);
  EXTERN(void) jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT *divisors,
                                     FAST_FLOAT *workspace);
  
  EXTERN(int) jsimd_can_idct_2x2 (void);
  EXTERN(int) jsimd_can_idct_4x4 (void);
  EXTERN(int) jsimd_can_idct_6x6 (void);
  EXTERN(int) jsimd_can_idct_12x12 (void);
  
  EXTERN(void) jsimd_idct_2x2 (j_decompress_ptr cinfo,
                               jpeg_component_info *compptr,
                               JCOEFPTR coef_block, JSAMPARRAY output_buf,
                               JDIMENSION output_col);
  EXTERN(void) jsimd_idct_4x4 (j_decompress_ptr cinfo,
                               jpeg_component_info *compptr,
                               JCOEFPTR coef_block, JSAMPARRAY output_buf,
                               JDIMENSION output_col);
  EXTERN(void) jsimd_idct_6x6 (j_decompress_ptr cinfo,
                               jpeg_component_info *compptr,
                               JCOEFPTR coef_block, JSAMPARRAY output_buf,
                               JDIMENSION output_col);
  EXTERN(void) jsimd_idct_12x12 (j_decompress_ptr cinfo,
                                 jpeg_component_info *compptr,
                                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
                                 JDIMENSION output_col);
  
  EXTERN(int) jsimd_can_idct_islow (void);
  EXTERN(int) jsimd_can_idct_ifast (void);
  EXTERN(int) jsimd_can_idct_float (void);
  
  EXTERN(void) jsimd_idct_islow (j_decompress_ptr cinfo,
                                 jpeg_component_info *compptr,
                                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
                                 JDIMENSION output_col);
  EXTERN(void) jsimd_idct_ifast (j_decompress_ptr cinfo,
                                 jpeg_component_info *compptr,
                                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
                                 JDIMENSION output_col);
  EXTERN(void) jsimd_idct_float (j_decompress_ptr cinfo,
                                 jpeg_component_info *compptr,
                                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
                                 JDIMENSION output_col);
  

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