Added support in osgTerrain/osgdem for setting the image format to use when writing tiles out to disk

applications/osgdem/osgdem.cpp

@@ -164,6 +164,7 @@ int main( int argc, char **argv )
     arguments.getApplicationUsage()->addCommandLineOption("-a <archivename>","Specify the archive to place the generated database");
     arguments.getApplicationUsage()->addCommandLineOption("-o <outputfile>","Specify the output master file to generate");
     arguments.getApplicationUsage()->addCommandLineOption("-l <numOfLevels>","Specify the number of PagedLOD levels to generate");
+    arguments.getApplicationUsage()->addCommandLineOption("--image-ext <ext>","Specify the Image format to output to via its plugin name, i.e. rgb, dds, jp2, jpeg.");
     arguments.getApplicationUsage()->addCommandLineOption("--levels <begin_level> <end_level>","Specify the range of lavels that the next source Texture or DEM will contribute to.");
     arguments.getApplicationUsage()->addCommandLineOption("--layer <layer_num>","Specify the layer that the next source Texture will contribute to..");
     arguments.getApplicationUsage()->addCommandLineOption("-e <x> <y> <w> <h>","Extents of the model to generate");
@@ -296,6 +297,26 @@ int main( int argc, char **argv )
         dataset->setRadiusToMaxVisibleDistanceRatio(radiusToMaxVisibleDistanceRatio);
     }
 
+    std::string image_ext;
+    while (arguments.read("--image-ext",image_ext))
+    {
+        std::string::size_type dot = image_ext.find_last_of('.');
+        if (dot!=std::string::npos) image_ext.erase(0,dot+1);
+
+        osgDB::ReaderWriter* rw = osgDB::Registry::instance()->getReaderWriterForExtension(image_ext);
+        if (rw) 
+        {
+            image_ext.insert(0,".");
+            dataset->setDestinationImageExtension(image_ext);
+            return 1;
+        }
+        else
+        {
+            std::cout<<"Error: can not find plugin to write out image with extension '"<<image_ext<<"'"<<std::endl;
+            return 1;
+        }
+    }
+
 
     // if user request help write it out to cout.
     if (arguments.read("-h") || arguments.read("--help"))

include/osgTerrain/DataSet

@@ -982,6 +982,9 @@ class OSGTERRAIN_EXPORT DataSet : public osg::Referenced
         
         void setDestinationTileExtension(const std::string& extension) { _tileExtension = extension; }
         const std::string& getDestinationTileExtension() const { return _tileExtension; }
+
+        void setDestinationImageExtension(const std::string& extension) { _imageExtension = extension; }
+        const std::string& getDestinationImageExtension() const { return _imageExtension; }
         
         enum DatabaseType
         {
@@ -1125,6 +1128,7 @@ class OSGTERRAIN_EXPORT DataSet : public osg::Referenced
         osg::ref_ptr<osgDB::Archive>                _archive;
         std::string                                 _tileBasename;
         std::string                                 _tileExtension;
+        std::string                                 _imageExtension;
         osg::Vec4                                   _defaultColor;
         DatabaseType                                _databaseType;
         GeometryType                                _geometryType;

src/osgTerrain/DataSet.cpp

@@ -1508,9 +1508,7 @@ void DataSet::DestinationTile::allocate()
 
             imageData._imagery->_image = new osg::Image;
 
-            std::string imageExension(".dds"); // ".rgb"
+            std::string imageName(_name+_dataSet->getDestinationImageExtension());
-            //std::string imageExension(".jp2"); // ".rgb"
-            std::string imageName(_name+imageExension);
             imageData._imagery->_image->setFileName(imageName.c_str());
 
             imageData._imagery->_image->allocateImage(texture_numColumns,texture_numRows,1,_pixelFormat,GL_UNSIGNED_BYTE);
@@ -3705,6 +3703,11 @@ DataSet::DataSet()
 
     _convertFromGeographicToGeocentric = false;
     
+    _tileBasename = "output";
+    _tileExtension = ".ive";
+    _imageExtension = ".dds";
+
+    
     _defaultColor.set(0.5f,0.5f,1.0f,1.0f);
     _databaseType = PagedLOD_DATABASE;
     _geometryType = POLYGONAL;