Merge with master and fix conflicts

modules/imgcodecs/src/grfmt_gdal.hpp

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+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
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+//
+//  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.
+//
+//
+//                        Intel License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000, Intel Corporation, 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 Intel Corporation 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_GDAL_HPP__
+#define __GRFMT_GDAL_HPP__
+
+/// Macro to make sure we specified GDAL in CMake
+#ifdef HAVE_GDAL
+
+/// C++ Libraries
+#include <iostream>
+
+/// OpenCV Libraries
+#include "grfmt_base.hpp"
+#include "precomp.hpp"
+
+/// Geospatial Data Abstraction Library
+#include <gdal/cpl_conv.h>
+#include <gdal/gdal_priv.h>
+#include <gdal/gdal.h>
+
+
+/// Start of CV Namespace
+namespace cv {
+
+/**
+ * Convert GDAL Palette Interpretation to OpenCV Pixel Type
+*/
+int gdalPaletteInterpretation2OpenCV( GDALPaletteInterp const& paletteInterp,
+                                      GDALDataType const& gdalType );
+
+/**
+ * Convert a GDAL Raster Type to OpenCV Type
+*/
+int gdal2opencv( const GDALDataType& gdalType, const int& channels );
+
+/**
+ * Write an image to pixel
+*/
+void write_pixel( const double& pixelValue,
+                  GDALDataType const& gdalType,
+                  const int& gdalChannels,
+                  Mat& image,
+                  const int& row,
+                  const int& col,
+                  const int& channel );
+
+/**
+ * Write a color table pixel to the image
+*/
+void write_ctable_pixel( const double& pixelValue,
+                         const GDALDataType& gdalType,
+                         const GDALColorTable* gdalColorTable,
+                         Mat& image,
+                         const int& y,
+                         const int& x,
+                         const int& c );
+
+/**
+ * Loader for GDAL
+*/
+class GdalDecoder : public BaseImageDecoder{
+
+    public:
+
+        /**
+         * Default Constructor
+        */
+        GdalDecoder();
+
+        /**
+         * Destructor
+        */
+        ~GdalDecoder();
+
+        /**
+         * Read image data
+        */
+        bool readData( Mat& img );
+
+        /**
+         * Read the image header
+        */
+        bool readHeader();
+
+        /**
+         * Close the module
+        */
+        void close();
+
+        /**
+         * Create a new decoder
+        */
+        ImageDecoder newDecoder() const;
+
+        /**
+         * Test the file signature
+         *
+         * In general, this should be avoided as the user should specifically request GDAL.
+         * The reason is that GDAL tends to overlap with other image formats and it is probably
+         * safer to use other formats first.
+        */
+        virtual bool checkSignature( const String& signature ) const;
+
+    protected:
+
+        /// GDAL Dataset
+        GDALDataset* m_dataset;
+
+        /// GDAL Driver
+        GDALDriver* m_driver;
+
+        /// Check if we are reading from a color table
+        bool hasColorTable;
+
+}; /// End of GdalDecoder Class
+
+} /// End of Namespace cv
+
+#endif/*HAVE_GDAL*/
+
+#endif/*__GRFMT_GDAL_HPP__*/