Mercurial > hg > orthanc
annotate Core/HttpServer/HttpStreamTranscoder.h @ 3810:e9b7e05bcd42 transcoding
integration mainline->transcoding
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 06 Apr 2020 12:36:49 +0200 |
| parents | 2a170a8f1faf |
| children | f9863630ec7f |
| rev | line source |
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| 1525 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
| 1525 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 1525 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU General Public License as | |
| 9 * published by the Free Software Foundation, either version 3 of the | |
| 10 * License, or (at your option) any later version. | |
| 11 * | |
| 12 * In addition, as a special exception, the copyright holders of this | |
| 13 * program give permission to link the code of its release with the | |
| 14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 15 * that use the same license as the "OpenSSL" library), and distribute | |
| 16 * the linked executables. You must obey the GNU General Public License | |
| 17 * in all respects for all of the code used other than "OpenSSL". If you | |
| 18 * modify file(s) with this exception, you may extend this exception to | |
| 19 * your version of the file(s), but you are not obligated to do so. If | |
| 20 * you do not wish to do so, delete this exception statement from your | |
| 21 * version. If you delete this exception statement from all source files | |
| 22 * in the program, then also delete it here. | |
| 23 * | |
| 24 * This program is distributed in the hope that it will be useful, but | |
| 25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 27 * General Public License for more details. | |
| 28 * | |
| 29 * You should have received a copy of the GNU General Public License | |
| 30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 31 **/ | |
| 32 | |
| 33 | |
| 34 #pragma once | |
| 35 | |
| 36 #include "BufferHttpSender.h" | |
| 37 | |
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38 #include "../Compatibility.h" |
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39 |
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40 #include <memory> // For std::unique_ptr |
| 1525 | 41 |
| 42 namespace Orthanc | |
| 43 { | |
| 44 class HttpStreamTranscoder : public IHttpStreamAnswer | |
| 45 { | |
| 46 private: | |
| 47 IHttpStreamAnswer& source_; | |
| 48 CompressionType sourceCompression_; | |
| 49 uint64_t bytesToSkip_; | |
| 50 uint64_t skipped_; | |
| 51 uint64_t currentChunkOffset_; | |
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52 bool ready_; |
| 1525 | 53 |
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54 std::unique_ptr<BufferHttpSender> uncompressed_; |
| 1525 | 55 |
| 56 void ReadSource(std::string& buffer); | |
| 57 | |
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58 HttpCompression SetupZlibCompression(bool deflateAllowed); |
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59 |
| 1525 | 60 public: |
| 61 HttpStreamTranscoder(IHttpStreamAnswer& source, | |
| 62 CompressionType compression) : | |
| 63 source_(source), | |
| 64 sourceCompression_(compression), | |
| 65 bytesToSkip_(0), | |
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66 skipped_(0), |
| 2223 | 67 currentChunkOffset_(0), |
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68 ready_(false) |
| 1525 | 69 { |
| 70 } | |
| 71 | |
| 72 // This is the first method to be called | |
| 73 virtual HttpCompression SetupHttpCompression(bool gzipAllowed, | |
| 74 bool deflateAllowed); | |
| 75 | |
| 76 virtual bool HasContentFilename(std::string& filename) | |
| 77 { | |
| 78 return source_.HasContentFilename(filename); | |
| 79 } | |
| 80 | |
| 81 virtual std::string GetContentType() | |
| 82 { | |
| 83 return source_.GetContentType(); | |
| 84 } | |
| 85 | |
| 86 virtual uint64_t GetContentLength(); | |
| 87 | |
| 88 virtual bool ReadNextChunk(); | |
| 89 | |
| 90 virtual const char* GetChunkContent(); | |
| 91 | |
| 92 virtual size_t GetChunkSize(); | |
| 93 }; | |
| 94 } |