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//
// "$Id: Fl_JPEG_Image.cxx,v 1.1.2.5 2002/05/25 02:56:59 easysw Exp $"
//
// Fl_JPEG_Image routines.
//
// Copyright 1997-2002 by Easy Software Products.
// Image support donated by Matthias Melcher, Copyright 2000.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
// Contents:
//
//
//
// Include necessary header files...
//
#include <FL/Fl_JPEG_Image.H>
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
extern "C"
{
#ifdef HAVE_LIBJPEG
# include <jpeglib.h>
#endif // HAVE_LIBJPEG
}
//
// 'Fl_JPEG_Image::Fl_JPEG_Image()' - Load a JPEG image file.
//
Fl_JPEG_Image::Fl_JPEG_Image(const char *jpeg) // I - File to load
: Fl_RGB_Image(0,0,0) {
#ifdef HAVE_LIBJPEG
FILE *fp; // File pointer
struct jpeg_decompress_struct cinfo; // Decompressor info
struct jpeg_error_mgr jerr; // Error handler info
JSAMPROW row; // Sample row pointer
if ((fp = fopen(jpeg, "rb")) == NULL) return;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo);
jpeg_stdio_src(&cinfo, fp);
jpeg_read_header(&cinfo, 1);
cinfo.quantize_colors = (boolean)FALSE;
cinfo.out_color_space = JCS_RGB;
cinfo.out_color_components = 3;
cinfo.output_components = 3;
jpeg_calc_output_dimensions(&cinfo);
w(cinfo.output_width);
h(cinfo.output_height);
d(cinfo.output_components);
array = new uchar[w() * h() * d()];
alloc_array = 1;
jpeg_start_decompress(&cinfo);
while (cinfo.output_scanline < cinfo.output_height)
{
row = (JSAMPROW)(array +
cinfo.output_scanline * cinfo.output_width *
cinfo.output_components);
jpeg_read_scanlines(&cinfo, &row, (JDIMENSION)1);
}
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
fclose(fp);
#endif // HAVE_LIBJPEG
}
//
// End of "$Id: Fl_JPEG_Image.cxx,v 1.1.2.5 2002/05/25 02:56:59 easysw Exp $".
//
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