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authorYuval Adam <yuv.adm@gmail.com>2014-08-08 14:42:07 +0300
committerYuval Adam <yuv.adm@gmail.com>2014-08-08 14:42:07 +0300
commita6163888f3c56123b1db313743c6147ba498732c (patch)
treeff7d15d991d1d09ba6cbc0cec80924f57445bfdd /third_party/windows/fltk-1.1.10/src/Fl_JPEG_Image.cxx
parentc3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (diff)
Add third_party libs
Diffstat (limited to 'third_party/windows/fltk-1.1.10/src/Fl_JPEG_Image.cxx')
-rw-r--r--third_party/windows/fltk-1.1.10/src/Fl_JPEG_Image.cxx193
1 files changed, 193 insertions, 0 deletions
diff --git a/third_party/windows/fltk-1.1.10/src/Fl_JPEG_Image.cxx b/third_party/windows/fltk-1.1.10/src/Fl_JPEG_Image.cxx
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+//
+// "$Id: Fl_JPEG_Image.cxx 5845 2007-05-20 00:01:06Z mike $"
+//
+// Fl_JPEG_Image routines.
+//
+// Copyright 1997-2005 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 on the following page:
+//
+// http://www.fltk.org/str.php
+//
+// 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>
+#include <setjmp.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
+}
+
+
+//
+// Custom JPEG error handling structure...
+//
+
+#ifdef HAVE_LIBJPEG
+struct fl_jpeg_error_mgr {
+ jpeg_error_mgr pub_; // Destination manager...
+ jmp_buf errhand_; // Error handler
+};
+#endif // HAVE_LIBJPEG
+
+
+//
+// Error handler for JPEG files...
+//
+
+#ifdef HAVE_LIBJPEG
+extern "C" {
+ static void
+ fl_jpeg_error_handler(j_common_ptr dinfo) { // I - Decompressor info
+ longjmp(((fl_jpeg_error_mgr *)(dinfo->err))->errhand_, 1);
+ }
+
+ static void
+ fl_jpeg_output_handler(j_common_ptr) { // I - Decompressor info (not used)
+ }
+}
+#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
+ jpeg_decompress_struct dinfo; // Decompressor info
+ fl_jpeg_error_mgr jerr; // Error handler info
+ JSAMPROW row; // Sample row pointer
+
+ // the following variables are pointers allocating some private space that
+ // is not reset by 'setjmp()'
+ char* max_finish_decompress_err; // count errors and give up afer a while
+ char* max_destroy_decompress_err; // to avoid recusion and deadlock
+
+ // Clear data...
+ alloc_array = 0;
+ array = (uchar *)0;
+
+ // Open the image file...
+ if ((fp = fopen(jpeg, "rb")) == NULL) return;
+
+ // Setup the decompressor info and read the header...
+ dinfo.err = jpeg_std_error((jpeg_error_mgr *)&jerr);
+ jerr.pub_.error_exit = fl_jpeg_error_handler;
+ jerr.pub_.output_message = fl_jpeg_output_handler;
+
+ // Setup error loop variables
+ max_finish_decompress_err = (char*)malloc(1); // allocate space on the frame for error counters
+ max_destroy_decompress_err = (char*)malloc(1); // otherwise, the variables are reset on the longjmp
+ *max_finish_decompress_err=10;
+ *max_destroy_decompress_err=10;
+
+ if (setjmp(jerr.errhand_))
+ {
+ // JPEG error handling...
+ // if any of the cleanup routines hits another error, we would end up
+ // in a loop. So instead, we decrement max_err for some upper cleanup limit.
+ if ( ((*max_finish_decompress_err)-- > 0) && array)
+ jpeg_finish_decompress(&dinfo);
+ if ( (*max_destroy_decompress_err)-- > 0)
+ jpeg_destroy_decompress(&dinfo);
+
+ fclose(fp);
+
+ w(0);
+ h(0);
+ d(0);
+
+ if (array) {
+ delete[] (uchar *)array;
+ array = 0;
+ alloc_array = 0;
+ }
+
+ free(max_destroy_decompress_err);
+ free(max_finish_decompress_err);
+
+ return;
+ }
+
+ jpeg_create_decompress(&dinfo);
+ jpeg_stdio_src(&dinfo, fp);
+ jpeg_read_header(&dinfo, 1);
+
+ dinfo.quantize_colors = (boolean)FALSE;
+ dinfo.out_color_space = JCS_RGB;
+ dinfo.out_color_components = 3;
+ dinfo.output_components = 3;
+
+ jpeg_calc_output_dimensions(&dinfo);
+
+ w(dinfo.output_width);
+ h(dinfo.output_height);
+ d(dinfo.output_components);
+
+ array = new uchar[w() * h() * d()];
+ alloc_array = 1;
+
+ jpeg_start_decompress(&dinfo);
+
+ while (dinfo.output_scanline < dinfo.output_height) {
+ row = (JSAMPROW)(array +
+ dinfo.output_scanline * dinfo.output_width *
+ dinfo.output_components);
+ jpeg_read_scanlines(&dinfo, &row, (JDIMENSION)1);
+ }
+
+ jpeg_finish_decompress(&dinfo);
+ jpeg_destroy_decompress(&dinfo);
+
+ free(max_destroy_decompress_err);
+ free(max_finish_decompress_err);
+
+ fclose(fp);
+#endif // HAVE_LIBJPEG
+}
+
+//
+// End of "$Id: Fl_JPEG_Image.cxx 5845 2007-05-20 00:01:06Z mike $".
+//