f4334277
 Hu Chunming
提交3rdparty
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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_PNG_H_
#define _GRFMT_PNG_H_
#ifdef HAVE_PNG
#include "grfmt_base.hpp"
#include "bitstrm.hpp"
namespace cv
{
class PngDecoder CV_FINAL : public BaseImageDecoder
{
public:
PngDecoder();
virtual ~PngDecoder();
bool readData( Mat& img ) CV_OVERRIDE;
bool readHeader() CV_OVERRIDE;
void close();
ImageDecoder newDecoder() const CV_OVERRIDE;
protected:
static void readDataFromBuf(void* png_ptr, uchar* dst, size_t size);
int m_bit_depth;
void* m_png_ptr; // pointer to decompression structure
void* m_info_ptr; // pointer to image information structure
void* m_end_info; // pointer to one more image information structure
FILE* m_f;
int m_color_type;
size_t m_buf_pos;
};
class PngEncoder CV_FINAL : public BaseImageEncoder
{
public:
PngEncoder();
virtual ~PngEncoder();
bool isFormatSupported( int depth ) const CV_OVERRIDE;
bool write( const Mat& img, const std::vector<int>& params ) CV_OVERRIDE;
ImageEncoder newEncoder() const CV_OVERRIDE;
protected:
static void writeDataToBuf(void* png_ptr, uchar* src, size_t size);
static void flushBuf(void* png_ptr);
};
}
#endif
#endif/*_GRFMT_PNG_H_*/
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