Load fltk-1.1.3 into branches/upstream/current.

1 files changed, 111 insertions, 0 deletions

diff --git a/src/Fl_JPEG_Image.cxx b/src/Fl_JPEG_Image.cxx
new file mode 100644
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--- /dev/null
+++ b/src/Fl_JPEG_Image.cxx
@@ -0,0 +1,111 @@
+//
+// "$Id: Fl_JPEG_Image.cxx,v 1.1.2.7 2003/01/30 21:42:02 easysw Exp $"
+//
+// Fl_JPEG_Image routines.
+//
+// Copyright 1997-2003 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:
+//
+//   Fl_JPEG_Image::Fl_JPEG_Image() - Load a JPEG image file.
+//
+
+//
+// Include necessary header files...
+//
+
+#include <FL/Fl_JPEG_Image.H>
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+// Some releases of the Cygwin JPEG libraries don't have a correctly
+// updated header file for the INT32 data type; the following define
+// from Shane Hill seems to be a usable workaround...
+
+#if defined(WIN32) && defined(__CYGWIN__)
+#  define XMD_H
+#endif // WIN32 && __CYGWIN__
+
+
+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 1.1.2.7 2003/01/30 21:42:02 easysw Exp $".
+//