Mercurial > hg > orthanc
annotate Core/HttpServer/HttpStreamTranscoder.h @ 3747:7b6058f8f7aa transcoding
new branch: transcoding
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 13 Mar 2020 08:32:13 +0100 |
parents | 2a170a8f1faf |
children | f9863630ec7f |
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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 } |