kc3-lang/libjpeg-turbo/jdmaster.h

• Show log

  Commit

• Hash : 3ab68cf5
  Author :
  Date : 2016-02-19T18:32:10
  

  libjpeg API: Partial scanline decompression
  
  This, in combination with the existing jpeg_skip_scanlines() function,
  provides the ability to crop the image both horizontally and vertically
  while decompressing (certain restrictions apply-- see libjpeg.txt.)
  
  This also cleans up the documentation of the line skipping feature and
  removes the "strip decompression" feature from djpeg, since the new
  cropping feature is a superset of it.
  
  Refer to #34 for discussion.
  
  Closes #34
  

Download

• jdmaster.h

• /*
   * jdmaster.h
   *
   * This file was part of the Independent JPEG Group's software:
   * Copyright (C) 1991-1995, Thomas G. Lane.
   * For conditions of distribution and use, see the accompanying README.ijg
   * file.
   *
   * This file contains the master control structure for the JPEG decompressor.
   */
  
  /* Private state */
  
  typedef struct {
    struct jpeg_decomp_master pub; /* public fields */
  
    int pass_number;              /* # of passes completed */
  
    boolean using_merged_upsample; /* TRUE if using merged upsample/cconvert */
  
    /* Saved references to initialized quantizer modules,
     * in case we need to switch modes.
     */
    struct jpeg_color_quantizer *quantizer_1pass;
    struct jpeg_color_quantizer *quantizer_2pass;
  } my_decomp_master;
  
  typedef my_decomp_master *my_master_ptr;
  

Download