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67 lines
2.5 KiB
67 lines
2.5 KiB
/***************************************************************************
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multibuffer.h
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-------------------
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begin : Sat Aug 20 2005
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copyright : (C) 2005 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_MULTIBUFFER_H
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#define KRADIO_MULTIBUFFER_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 <tqsemaphore.h>
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#include <tqstring.h>
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#include <kdemacros.h>
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class KDE_EXPORT MultiBuffer
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{
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public:
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MultiBuffer(size_t n_buffers, size_t buffersize);
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~MultiBuffer();
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char *lockWriteBuffer (size_t &bufferSize);
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bool unlockWriteBuffer (size_t bufferSize); // return value: complete buffer full / ready for read
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void unlockAllWriteBuffers();
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char *wait4ReadBuffer (size_t &buffer_fill);
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char *getCurrentReadBuffer(size_t &buffer_fill) const;
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const TQString &getErrorString() const { return m_errorString; }
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bool hasError() const { return m_error; }
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void resetError();
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size_t getWriteBufferFill() const { return (m_currentReadBuffer != m_currentWriteBuffer) ? m_buffersFill[m_currentWriteBuffer] : 0; }
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size_t getAvailableWriteBuffer() const;
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size_t getAvailableReadBuffers() const;
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size_t getCurrentReadBufferIdx() const { return m_currentReadBuffer; }
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size_t getCurrentWriteBufferIdx() const { return m_currentWriteBuffer; }
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protected:
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size_t m_nBuffers;
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size_t m_BufferSize;
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char **m_buffers;
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size_t *m_buffersFill;
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size_t m_currentReadBuffer;
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size_t m_currentWriteBuffer;
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TQSemaphore m_readLock;
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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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