microsoft/onnxruntime-extensions
Publicmirrored fromhttps://github.com/microsoft/onnxruntime-extensionsAvailable
operators/vision/impl/png_encoder_decoder.hpp
103lines · modecode
| 1 | // Originally from https://github.com/opencv/opencv/tree/4.x/modules/imgcodecs/src |
| 2 | // Modified to remove opencv dependencies |
| 3 | |
| 4 | /*M/////////////////////////////////////////////////////////////////////////////////////// |
| 5 | // |
| 6 | // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. |
| 7 | // |
| 8 | // By downloading, copying, installing or using the software you agree to this license. |
| 9 | // If you do not agree to this license, do not download, install, |
| 10 | // copy or use the software. |
| 11 | // |
| 12 | // |
| 13 | // License Agreement |
| 14 | // For Open Source Computer Vision Library |
| 15 | // |
| 16 | // Copyright (C) 2000-2008, Intel Corporation, all rights reserved. |
| 17 | // Copyright (C) 2009, Willow Garage Inc., all rights reserved. |
| 18 | // Third party copyrights are property of their respective owners. |
| 19 | // |
| 20 | // Redistribution and use in source and binary forms, with or without modification, |
| 21 | // are permitted provided that the following conditions are met: |
| 22 | // |
| 23 | // * Redistribution's of source code must retain the above copyright notice, |
| 24 | // this list of conditions and the following disclaimer. |
| 25 | // |
| 26 | // * Redistribution's in binary form must reproduce the above copyright notice, |
| 27 | // this list of conditions and the following disclaimer in the documentation |
| 28 | // and/or other materials provided with the distribution. |
| 29 | // |
| 30 | // * The name of the copyright holders may not be used to endorse or promote products |
| 31 | // derived from this software without specific prior written permission. |
| 32 | // |
| 33 | // This software is provided by the copyright holders and contributors "as is" and |
| 34 | // any express or implied warranties, including, but not limited to, the implied |
| 35 | // warranties of merchantability and fitness for a particular purpose are disclaimed. |
| 36 | // In no event shall the Intel Corporation or contributors be liable for any direct, |
| 37 | // indirect, incidental, special, exemplary, or consequential damages |
| 38 | // (including, but not limited to, procurement of substitute goods or services; |
| 39 | // loss of use, data, or profits; or business interruption) however caused |
| 40 | // and on any theory of liability, whether in contract, strict liability, |
| 41 | // or tort (including negligence or otherwise) arising in any way out of |
| 42 | // the use of this software, even if advised of the possibility of such damage. |
| 43 | // |
| 44 | //M*/ |
| 45 | |
| 46 | #pragma once |
| 47 | |
| 48 | #include "vision/impl/image_encoder_decoder.hpp" |
| 49 | |
| 50 | #include <cassert> |
| 51 | #include <vector> |
| 52 | |
| 53 | namespace ort_extensions { |
| 54 | |
| 55 | class PngDecoder : public BaseImageDecoder { |
| 56 | public: |
| 57 | static bool IsPng(const uint8_t* bytes, uint64_t num_bytes); |
| 58 | |
| 59 | PngDecoder(const uint8_t* bytes, uint64_t num_bytes) |
| 60 | : BaseImageDecoder{bytes, num_bytes} { |
| 61 | ReadHeader(); |
| 62 | } |
| 63 | |
| 64 | virtual ~PngDecoder(); |
| 65 | |
| 66 | // ImageDecoder newDecoder() const CV_OVERRIDE; |
| 67 | |
| 68 | private: |
| 69 | static void ReadDataFromBuf(void* png_ptr, uint8_t* dst, size_t size); |
| 70 | |
| 71 | bool ReadHeader(); |
| 72 | bool ReadData(); |
| 73 | |
| 74 | bool DecodeImpl(uint8_t* output, uint64_t out_bytes) override; |
| 75 | |
| 76 | uint64_t cur_offset_{0}; // current read offset from bytes_ |
| 77 | |
| 78 | int bit_depth_{0}; |
| 79 | int color_type_{0}; |
| 80 | |
| 81 | // TODO: These are opaque assumably to keep png.h from being included here. not sure it's worth it. |
| 82 | // Created in ReadHeder. Freed in dtor. |
| 83 | void* png_ptr_{nullptr}; // pointer to decompression structure |
| 84 | void* info_ptr_{nullptr}; // pointer to image information structure |
| 85 | void* end_info_{nullptr}; // pointer to one more image information structure |
| 86 | }; |
| 87 | |
| 88 | class PngEncoder : public BaseImageEncoder { |
| 89 | public: |
| 90 | PngEncoder(const uint8_t* bytes, const std::vector<int64_t>& shape) |
| 91 | : BaseImageEncoder(bytes, shape) { |
| 92 | } |
| 93 | |
| 94 | private: |
| 95 | bool EncodeImpl() override; |
| 96 | |
| 97 | static void WriteDataToBuf(void* png_ptr, uint8_t* src, size_t size); |
| 98 | static void FlushBuf(void* png_ptr); |
| 99 | |
| 100 | uint64_t cur_offset_{0}; // current read offset from bytes_ |
| 101 | }; |
| 102 | |
| 103 | } // namespace ort_extensions |
| 104 | |