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73 lines
2.6 KiB
73 lines
2.6 KiB
/***************************************************************************
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ringbuffer.h - description
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-------------------
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begin : Sun March 21 2004
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copyright : (C) 2004 by Martin Witte
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email : witte@kawo1.rwth-aachen.de
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef _KRADIO_FILE_RING_BUFFER_H
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#define _KRADIO_FILE_RING_BUFFER_H
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <tqstring.h>
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#include <kdemacros.h>
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#include <stdio.h>
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class KDE_EXPORT FileRingBuffer
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{
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public:
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FileRingBuffer(const TQString &filename, TQ_UINT64 max_size);
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~FileRingBuffer();
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bool resize(const TQString &filename, TQ_UINT64 new_max_size);
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size_t addData (const char *src, size_t size);
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size_t takeData(char *dst, size_t size);
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TQ_UINT64 removeData(TQ_UINT64 size);
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const TQString &getFileName () const { return m_FileName; }
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TQ_UINT64 getMaxSize() const { return m_MaxSize; }
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TQ_UINT64 getRealSize() const { return m_RealSize; }
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TQ_UINT64 getFillSize() const { return m_FillSize; }
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TQ_UINT64 getFreeSize() const { return (m_Start + m_FillSize > m_RealSize) ? m_RealSize - m_FillSize : m_MaxSize - m_FillSize; }
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void clear();
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bool error() const { return m_error; }
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const TQString &errorString() const { return m_errorString; }
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protected:
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TQ_UINT64 getFreeSpace(TQ_UINT64 &size); // returns position in file + size
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TQ_UINT64 removeFreeSpace(TQ_UINT64 size);
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TQ_UINT64 getData(TQ_UINT64 &size); // returns position in file + size
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int m_FileIdx;
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TQString m_BaseFileName;
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TQString m_FileName;
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FILE *m_File;
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TQ_UINT64 m_Start;
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TQ_UINT64 m_MaxSize;
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TQ_UINT64 m_RealSize;
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TQ_UINT64 m_FillSize;
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TQString m_errorString;
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bool m_error;
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};
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#endif
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