[Digikam-devel] [Bug 112801] digikarm refuses to start: Unsupported JPEG data precision 12

[Renchi Raju]

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http://bugs.kde.org/show_bug.cgi?id=112801         
renchi.raju kdemail net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED



------- Additional Comments From renchi.raju kdemail net  2005-09-18 02:07 -------
SVN commit 461552 by pahlibar:

override default jpeg error handling so that the 
program doesn't bail out on encoutering a rogue jpeg
file
BUGS: 112801


 M  +37 -8     jpegmetadata.cpp  


--- trunk/extragear/graphics/digikam/libs/jpegutils/jpegmetadata.cpp #461551:461552
 @ -19,6 +19,7  @
  * ============================================================ */
 
 #include <qfile.h>
+#include <kdebug.h>
 #include <libkexif/kexifdata.h>
 
 #include "jpegmetadata.h"
 @ -27,8 +28,28  @
 extern "C" {
 #include <stdio.h>
 #include <jpeglib.h>
+#include <setjmp.h>
 }         
 
+struct readJPEGMetaData_error_mgr : public jpeg_error_mgr
+{
+    jmp_buf setjmp_buffer;
+};
+
+extern "C"
+{
+    static void readJPEGMetaData_error_exit(j_common_ptr cinfo)
+    {
+        readJPEGMetaData_error_mgr* myerr =
+            (readJPEGMetaData_error_mgr*) cinfo->err;
+
+        char buffer[JMSG_LENGTH_MAX];
+        (*cinfo->err->format_message)(cinfo, buffer);
+        kdWarning() << buffer << endl;
+        longjmp(myerr->setjmp_buffer, 1);
+    }
+}
+
 namespace Digikam
 {
 
 @ -42,18 +63,26  @
     comments = QString();
     datetime = QDateTime();
 
-    struct jpeg_decompress_struct srcinfo;
-    struct jpeg_error_mgr jsrcerr;
+    FILE *input_file = fopen(QFile::encodeName(filePath), "rb");
+    if (!input_file)
+        return;
+    
+    struct jpeg_decompress_struct     srcinfo;
+    struct readJPEGMetaData_error_mgr jerr;
 
-    srcinfo.err = jpeg_std_error(&jsrcerr);
+    srcinfo.err             = jpeg_std_error(&jerr);
+    srcinfo.err->error_exit = readJPEGMetaData_error_exit;
+
+    if (setjmp(jerr.setjmp_buffer))
+    {
+        jpeg_destroy_decompress(&srcinfo);
+        fclose(input_file);
+        return;
+    }
+    
     jpeg_create_decompress(&srcinfo);
 
-    FILE *input_file;
 
-    input_file = fopen(QFile::encodeName(filePath), "rb");
-    if (!input_file)
-        return;
-
     unsigned short header;
     
     if (fread(&header, 2, 1, input_file) != 1)