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https://gitlab.kitware.com/vtk/vtk-m
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1e91b32ace
Updated the image reader classes to better follow VTK-m naming convention (i.e. use `ImageReaderPNG` instead of `PNGReader`). The structure of the image reader class now also better matches the interface for the VTK reader. Also put the implementation of the image readers into the `vtkm_io` library so that it only has to be compiled once.
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_io_ImageReaderPNM_h
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#define vtk_m_io_ImageReaderPNM_h
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#include <vtkm/io/ImageReaderBase.h>
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namespace vtkm
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{
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namespace io
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{
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/// \brief Manages reading images using the PNM format
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///
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/// `ImageReaderPNM` extends `ImageReaderBase`, and implements reading images from a
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/// valid PNM format (for magic number P6). More details on the PNM
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/// format can be found here: http://netpbm.sourceforge.net/doc/ppm.html
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///
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/// When a file is read the parsed MagicNumber and MaxColorSize provided
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/// are utilized to correctly parse the bits from the file
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class VTKM_IO_EXPORT ImageReaderPNM : public ImageReaderBase
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{
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using Superclass = ImageReaderBase;
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public:
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using Superclass::Superclass;
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VTKM_CONT ~ImageReaderPNM() noexcept override;
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ImageReaderPNM(const ImageReaderPNM&) = delete;
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ImageReaderPNM& operator=(const ImageReaderPNM&) = delete;
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protected:
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VTKM_CONT void Read() override;
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/// Reads image data from the provided inStream with the supplied width/height
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/// Stores the data in a vector of PixelType which is converted to an DataSet
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///
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template <typename PixelType>
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void DecodeFile(std::ifstream& inStream, const vtkm::Id& width, const vtkm::Id& height);
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};
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}
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} // namespace vtkm::io
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#endif //vtk_m_io_ImageReaderPNM_h
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