/*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" 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; } 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; }; ///////////////////////////// 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 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_*/