kc3-lang/libjpeg-turbo/wrppm.h

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• 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
  

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• wrppm.h

• /*
   * wrppm.h
   *
   * This file was part of the Independent JPEG Group's software:
   * Copyright (C) 1994, Thomas G. Lane.
   * For conditions of distribution and use, see the accompanying README.ijg
   * file.
   */
  
  #ifdef PPM_SUPPORTED
  
  /* Private version of data destination object */
  
  typedef struct {
    struct djpeg_dest_struct pub; /* public fields */
  
    /* Usually these two pointers point to the same place: */
    char *iobuffer;               /* fwrite's I/O buffer */
    JSAMPROW pixrow;              /* decompressor output buffer */
    size_t buffer_width;          /* width of I/O buffer */
    JDIMENSION samples_per_row;   /* JSAMPLEs per output row */
  } ppm_dest_struct;
  
  typedef ppm_dest_struct *ppm_dest_ptr;
  
  #endif
  

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