mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-02-09 21:20:05 -06:00
febd298556
Also includes some additional minor changes from the original feature/solarbrowsing branch
89 lines
4.1 KiB
C++
89 lines
4.1 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2018 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_MODULE_SOLARBROWSING___J2KCODEC___H__
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#define __OPENSPACE_MODULE_SOLARBROWSING___J2KCODEC___H__
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#include <memory>
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#include <openjpeg.h>
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#include <string>
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namespace openspace {
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/**
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* TODO(mnoven): A simple wrapper around openjpeg. As of 08/24/17 openjpeg has 3 major
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* bottlenecks which are listed below:
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*
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* 1. We can't perform decoding on multiple threads, this feature is not stable and
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* results in a segmentation fault.
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* 2. We want to be able to decode directly into our buffer without having to go through
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* the opj_image_t object.
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* See: https://github.com/uclouvain/openjpeg/issues/837
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* 3. Decoding precison is always 32-bits integers, meaning conversion has to be done if
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* 8-bytes are preferred.
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* See: https://github.com/uclouvain/openjpeg/issues/836
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*/
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struct ImageData {
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int32_t* data;
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uint32_t w;
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uint32_t h;
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};
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class J2kCodec {
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public:
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static constexpr const int ALL_THREADS = 0;
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J2kCodec(bool verboseMode = false);
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~J2kCodec();
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// Decode into a client allocated buffer
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void decodeIntoBuffer(const std::string& path, unsigned char* buffer,
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int resolutionLevel, int numQualityLayers = 1, int x0 = -1, int y0 = -1,
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int x1 = -1, int y1 = -1, int numThreads = ALL_THREADS);
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// Experimental and not used at the moment
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void encodeAsTiles(const char* outfile, const int32_t* data, unsigned int imageWidth,
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unsigned int imageHeight, unsigned int tileWidth, unsigned int tileHeight,
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unsigned int numComps, unsigned int compPrec);
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private:
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void destroy();
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void createInfileStream(std::string filename);
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void setupDecoder(int resolutionLevel, int numQualityLayers, int x0, int x1, int y0,
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int y1, int nThreads);
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opj_codec_t* _decoder = nullptr;
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opj_dparameters_t _decoderParams;
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opj_image_t* _image = nullptr;
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std::string _infileName;
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opj_stream_t* _infileStream = nullptr;
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bool _verboseMode;
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};
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} // namespace openspace
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#endif // __OPENSPACE_MODULE_SOLARBROWSING___J2KCODEC___H__
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