libktorrent  2.1.1
torrentfilestream.h
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2  * Copyright (C) 2010 by Joris Guisson *
3  * joris.guisson@gmail.com *
4  * *
5  * This program is free software; you can redistribute it and/or modify *
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13  * GNU General Public License for more details. *
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17  * Free Software Foundation, Inc., *
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20 
21 #ifndef BT_TORRENTFILESTREAM_H
22 #define BT_TORRENTFILESTREAM_H
23 
24 #include <QIODevice>
25 #include <QWeakPointer>
26 #include <QSharedPointer>
27 #include <ktorrent_export.h>
28 #include <util/constants.h>
29 
30 
31 namespace bt
32 {
33  class ChunkManager;
34  class TorrentControl;
35  class TorrentInterface;
36  class BitSet;
37 
38 
43  class KTORRENT_EXPORT TorrentFileStream : public QIODevice
44  {
45  Q_OBJECT
46  public:
47  TorrentFileStream(TorrentControl* tc,ChunkManager* cman,bool streaming_mode,QObject* parent);
48  TorrentFileStream(TorrentControl* tc,Uint32 file_index,ChunkManager* cman,bool streaming_mode,QObject* parent);
49  ~TorrentFileStream() override;
50 
52  bool open(QIODevice::OpenMode mode) override;
53 
55  void close() override;
56 
58  qint64 pos() const override;
59 
61  qint64 size() const override;
62 
64  bool seek(qint64 pos) override;
65 
67  bool atEnd() const override;
68 
70  bool reset() override;
71 
73  qint64 bytesAvailable() const override;
74 
76  bool isSequential() const override {return false;}
77 
79  QString path() const;
80 
82  const BitSet & chunksBitSet() const;
83 
85  Uint32 currentChunk() const;
86 
87  typedef QSharedPointer<TorrentFileStream> Ptr;
88  typedef QWeakPointer<TorrentFileStream> WPtr;
89 
90  protected:
91  qint64 writeData(const char* data, qint64 len) override;
92  qint64 readData(char* data, qint64 maxlen) override;
93  void emitReadChannelFinished();
94 
95  private Q_SLOTS:
96  void chunkDownloaded(bt::TorrentInterface* tc, bt::Uint32 chunk);
97 
98  private:
99  class Private;
100  Private* d;
101  };
102 
103 }
104 
105 #endif // BT_TORRENTFILESTREAM_H
bt::BitSet
Simple implementation of a BitSet.
Definition: bitset.h:55
bt::TorrentInterface
Interface for an object which controls one torrent.
Definition: torrentinterface.h:108