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patextract.c

/*
 *  
 *  Copyright (c) 2002 Steve Slaven, All Rights Reserved.
 *  
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation; either version 2 of
 *  the License, or (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA 02111-1307 USA
 *  
*/
#include <stdio.h>
#include <stdlib.h>

#include "debug.h"
#include "image.h"

int main( int argc, char *argv[] ) {
  int width, height, x, y;
  IMAGE *in, *subimage;
  
  if( argc != 6 ) {
    printf( "patextract v" VERSION "\n"
          "Author: Steve Slaven - http://hoopajoo.net\n"
          "\n"
          "usage: %s infile.png\n"
          "\n"
          "infile is an RGB or RGBA PNG\n"
          "the resulting pat file is written to stdout\n"
          "\n"
          "The file can be used with visgrep to scrape screen content\n"
          "\n"
          , argv[ 0 ] );
    
    exit( 1 );
  }

  /* Pull args */
  sscanf( argv[ 2 ], "%d", &x );
  sscanf( argv[ 3 ], "%d", &y );
  sscanf( argv[ 4 ], "%d", &width );
  sscanf( argv[ 5 ], "%d", &height );

  dmsg( 1, "Reading image...\n" );
  in = img_load_from_png( argv[ 1 ] );
  if( ! in ) {
    printf( "Failed to load %s\n", argv[ 1 ] );
    exit( 1 );
  }

  dmsg( 1, "Image attribs: %dx%d\n", in -> width, in -> height );
  dmsg( 1, "Writing image to img.out...\n" );

  subimage = img_extract( in, x, y, width, height );
  img_write_fd( subimage, stdout );
  img_destroy( in );
  
  exit( 0 );
}

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