f4334277
 Hu Chunming
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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#ifndef _GRFMT_BASE_H_
#define _GRFMT_BASE_H_
#include "utils.hpp"
#include "bitstrm.hpp"
#include "exif.hpp"
namespace cv
{
class BaseImageDecoder;
class BaseImageEncoder;
typedef Ptr<BaseImageEncoder> ImageEncoder;
typedef Ptr<BaseImageDecoder> ImageDecoder;
///////////////////////////////// base class for decoders ////////////////////////
class BaseImageDecoder
{
public:
BaseImageDecoder();
virtual ~BaseImageDecoder() {}
int width() const { return m_width; }
int height() const { return m_height; }
virtual int type() const { return m_type; }
ExifEntry_t getExifTag(const ExifTagName tag) const;
virtual bool setSource( const String& filename );
virtual bool setSource( const Mat& buf );
virtual int setScale( const int& scale_denom );
virtual bool readHeader() = 0;
virtual bool readData( Mat& img ) = 0;
/// Called after readData to advance to the next page, if any.
virtual bool nextPage() { return false; }
virtual size_t signatureLength() const;
virtual bool checkSignature( const String& signature ) const;
virtual ImageDecoder newDecoder() const;
protected:
int m_width; // width of the image ( filled by readHeader )
int m_height; // height of the image ( filled by readHeader )
int m_type;
int m_scale_denom;
String m_filename;
String m_signature;
Mat m_buf;
bool m_buf_supported;
ExifReader m_exif;
};
///////////////////////////// base class for encoders ////////////////////////////
class BaseImageEncoder
{
public:
BaseImageEncoder();
virtual ~BaseImageEncoder() {}
virtual bool isFormatSupported( int depth ) const;
virtual bool setDestination( const String& filename );
virtual bool setDestination( std::vector<uchar>& buf );
virtual bool write( const Mat& img, const std::vector<int>& params ) = 0;
virtual bool writemulti(const std::vector<Mat>& img_vec, const std::vector<int>& params);
virtual String getDescription() const;
virtual ImageEncoder newEncoder() const;
virtual void throwOnEror() const;
protected:
String m_description;
String m_filename;
std::vector<uchar>* m_buf;
bool m_buf_supported;
String m_last_error;
};
}
#endif/*_GRFMT_BASE_H_*/
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