mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
64 lines
2.0 KiB
C++
64 lines
2.0 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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#include <vtkm/io/EncodePNG.h>
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#include <vtkm/io/FileUtils.h>
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#include <vtkm/cont/Logging.h>
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#include <vtkm/internal/Configure.h>
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VTKM_THIRDPARTY_PRE_INCLUDE
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#include <vtkm/thirdparty/lodepng/vtkmlodepng/lodepng.h>
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VTKM_THIRDPARTY_POST_INCLUDE
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namespace vtkm
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{
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namespace io
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{
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vtkm::UInt32 EncodePNG(std::vector<unsigned char> const& image,
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unsigned long width,
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unsigned long height,
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std::vector<unsigned char>& output_png)
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{
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// The default is 8 bit RGBA; does anyone care to have more options?
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// We can certainly add them in a backwards-compatible way if need be.
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vtkm::UInt32 error = vtkm::png::lodepng::encode(
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output_png, image, static_cast<unsigned int>(width), static_cast<unsigned int>(height));
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if (error)
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{
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VTKM_LOG_S(vtkm::cont::LogLevel::Error,
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"LodePNG Encoder error number " << error << ": " << png::lodepng_error_text(error));
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}
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return error;
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}
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vtkm::UInt32 SavePNG(std::string const& filename,
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std::vector<unsigned char> const& image,
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unsigned long width,
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unsigned long height)
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{
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if (!vtkm::io::EndsWith(filename, ".png"))
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{
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VTKM_LOG_S(vtkm::cont::LogLevel::Error,
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"File " << filename << " does not end with .png; this is required.");
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}
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std::vector<unsigned char> output_png;
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vtkm::UInt32 error = EncodePNG(image, width, height, output_png);
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if (!error)
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{
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vtkm::png::lodepng::save_file(output_png, filename);
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}
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return error;
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}
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}
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} // namespace vtkm::io
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