Extract imgcodecs module from highgui

2014-07-04 18:48:15 +04:00
parent 964b260937
commit 4286f60387
204 changed files with 968 additions and 439 deletions
--- a/modules/imgcodecs/src/grfmt_png.hpp
+++ b/modules/imgcodecs/src/grfmt_png.hpp
@@ -0,0 +1,101 @@
+/*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 : public BaseImageDecoder
+{
+public:
+
+    PngDecoder();
+    virtual ~PngDecoder();
+
+    bool  readData( Mat& img );
+    bool  readHeader();
+    void  close();
+
+    ImageDecoder newDecoder() const;
+
+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 : public BaseImageEncoder
+{
+public:
+    PngEncoder();
+    virtual ~PngEncoder();
+
+    bool  isFormatSupported( int depth ) const;
+    bool  write( const Mat& img, const std::vector<int>& params );
+
+    ImageEncoder newEncoder() const;
+
+protected:
+    static void writeDataToBuf(void* png_ptr, uchar* src, size_t size);
+    static void flushBuf(void* png_ptr);
+};
+
+}
+
+#endif
+
+#endif/*_GRFMT_PNG_H_*/