OpenSceneGraph/examples/osgphotoalbum/ImageReaderWriter.h

97 lines
3.4 KiB
C++

/* -*-c++-*-
*
* OpenSceneGraph example, osgphotoalbum.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef IMAGEREADERWRITER_H
#define IMAGEREADERWRITER_H
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
#include <osgDB/ImageOptions>
#include <OpenThreads/ScopedLock>
#include <OpenThreads/ReentrantMutex>
#include "PhotoArchive.h"
#define SERIALIZER() OpenThreads::ScopedLock<OpenThreads::ReentrantMutex> lock(_serializerMutex)
class ImageReaderWriter : public osgDB::ReaderWriter
{
public:
ImageReaderWriter();
virtual const char* className() const { return "ImageReader"; }
void addPhotoArchive(PhotoArchive* archive) { _photoArchiveList.push_back(archive); }
std::string insertReference(const std::string& fileName, unsigned int res, float width, float height, bool backPage)
{
SERIALIZER();
return const_cast<ImageReaderWriter*>(this)->local_insertReference(fileName, res, width, height, backPage);
}
virtual ReadResult readNode(const std::string& fileName, const Options* options) const
{
SERIALIZER();
return const_cast<ImageReaderWriter*>(this)->local_readNode(fileName, options);
}
protected:
std::string local_insertReference(const std::string& fileName, unsigned int res, float width, float height, bool backPage);
ReadResult local_readNode(const std::string& fileName, const Options*);
mutable OpenThreads::ReentrantMutex _serializerMutex;
struct DataReference
{
DataReference();
DataReference(const std::string& fileName, unsigned int res, float width, float height,bool backPage);
DataReference(const DataReference& rhs);
std::string _fileName;
unsigned int _resolutionX;
unsigned int _resolutionY;
osg::Vec3 _center;
osg::Vec3 _maximumWidth;
osg::Vec3 _maximumHeight;
unsigned int _numPointsAcross;
unsigned int _numPointsUp;
bool _backPage;
};
osg::Image* readImage_Archive(DataReference& dr, float& s,float& t);
osg::Image* readImage_DynamicSampling(DataReference& dr, float& s,float& t);
typedef std::map< std::string,DataReference > DataReferenceMap;
typedef std::vector< osg::ref_ptr<PhotoArchive> > PhotoArchiveList;
DataReferenceMap _dataReferences;
PhotoArchiveList _photoArchiveList;
};
#endif