src/common/compressor.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2014 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
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  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
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  20
  21 #ifndef COMPRESSOR_H
  22 #define COMPRESSOR_H
  23
  24 #include <QObject>
  25
  26 class QTcpSocket;
  27
  28 class Compressor : public QObject
  29 {
  30     Q_OBJECT
  31
  32 public:
  33     enum CompressionLevel {
  34         NoCompression,
  35         DefaultCompression,
  36         BestCompression,
  37         BestSpeed
  38     };
  39
  40     enum Error {
  41         NoError,
  42         StreamError,
  43         DeviceError
  44     };
  45
  46     enum WriteBufferHint {
  47         NoFlush,
  48         Flush
  49     };
  50
  51     Compressor(QTcpSocket *socket, CompressionLevel level, QObject *parent = 0);
  52
  53     CompressionLevel compressionLevel() const { return _level; }
  54
  55     qint64 bytesAvailable() const;
  56
  57     qint64 read(char *data, qint64 maxSize);
  58     qint64 write(const char *data, qint64 count, WriteBufferHint flush = Flush);
  59
  60     void flush();
  61
  62 signals:
  63     void readyRead();
  64     void error(Compressor::Error errorCode);
  65
  66 private slots:
  67     void readData();
  68
  69 private:
  70     void writeData();
  71
  72 private:
  73     QTcpSocket *_socket;
  74     CompressionLevel _level;
  75
  76     QByteArray _readBuffer;
  77     QByteArray _writeBuffer;
  78 };
  79
  80 #endif