83 lines
3.6 KiB
C
83 lines
3.6 KiB
C
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// ----------------------------------------------------------------------------
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// - Open3D: www.open3d.org -
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// ----------------------------------------------------------------------------
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// Copyright (c) 2018-2023 www.open3d.org
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// SPDX-License-Identifier: MIT
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// ----------------------------------------------------------------------------
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#pragma once
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#include <string>
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#include "open3d/geometry/Image.h"
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namespace open3d {
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namespace io {
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/// Factory function to create an image from a file (ImageFactory.cpp)
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/// Return an empty image if fail to read the file.
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std::shared_ptr<geometry::Image> CreateImageFromFile(
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const std::string &filename);
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/// Factory function to create an image from memory.
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std::shared_ptr<geometry::Image> CreateImageFromMemory(
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const std::string &image_format,
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const unsigned char *image_data_ptr,
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size_t image_data_size);
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/// The general entrance for reading an Image from a file
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/// The function calls read functions based on the extension name of filename.
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/// \return return true if the read function is successful, false otherwise.
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bool ReadImage(const std::string &filename, geometry::Image &image);
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/// The general entrance for reading an Image from memory
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/// The function calls read functions based on format of image.
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/// \param image_format the format of image, "png" or "jpg".
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/// \param image_data_ptr the pointer to image data in memory.
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/// \param image_data_size the size of image data in memory.
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/// \return return true if the read function is successful, false otherwise.
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bool ReadImageFromMemory(const std::string &image_format,
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const unsigned char *image_data_ptr,
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size_t image_data_size,
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geometry::Image &image);
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constexpr int kOpen3DImageIODefaultQuality = -1;
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/// The general entrance for writing an Image to a file
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/// The function calls write functions based on the extension name of filename.
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/// If the write function supports quality, the parameter will be used.
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/// Otherwise it will be ignored.
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/// \param quality: PNG: [0-9] <=2 fast write for storing intermediate data
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/// >=3 (default) normal write for balanced speed and
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/// file size
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/// JPEG: [0-100] Typically in [70,95]. 90 is default (good
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/// quality).
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/// \return return true if the write function is successful, false otherwise.
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bool WriteImage(const std::string &filename,
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const geometry::Image &image,
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int quality = kOpen3DImageIODefaultQuality);
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bool ReadImageFromPNG(const std::string &filename, geometry::Image &image);
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bool WriteImageToPNG(const std::string &filename,
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const geometry::Image &image,
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int quality = kOpen3DImageIODefaultQuality);
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bool ReadImageFromJPG(const std::string &filename, geometry::Image &image);
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bool WriteImageToJPG(const std::string &filename,
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const geometry::Image &image,
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int quality = kOpen3DImageIODefaultQuality);
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/// The general entrance for reading an Image from memory
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bool ReadPNGFromMemory(const unsigned char *image_data_ptr,
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size_t image_data_size,
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geometry::Image &image);
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bool ReadJPGFromMemory(const unsigned char *image_data_ptr,
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size_t image_data_size,
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geometry::Image &image);
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} // namespace io
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} // namespace open3d
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