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76 lines
1.9 KiB
76 lines
1.9 KiB
/*
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queues audio frames in an IOQueue, allows streaming from frames
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Copyright (C) 2001 Martin Vogt
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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 Library General Public License as published by
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the Free Software Foundation.
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For more information look at the file COPYRIGHT in this package
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*/
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#ifndef __AUDIOFRAMEQUE_H
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#define __AUDIOFRAMEQUE_H
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#include "IOFrameQueue.h"
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#include "floatFrame.h"
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#include "pcmFrame.h"
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#include <kdemacros.h>
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/**
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This class solves the problem that we produce audioFrames
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in a packet, but often we want that these packets looks
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like a stream.
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This class can convert from packets back to a stream.
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*/
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class KDE_EXPORT AudioFrameQueue : public IOFrameQueue {
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int frameType;
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int len;
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AudioFrame* currentAudioFrame;
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int currentRead;
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public:
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AudioFrameQueue(int queueSize,int frameSize,int frameType);
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~AudioFrameQueue();
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void emptyQueueEnqueue(AudioFrame* frame);
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AudioFrame* emptyQueueDequeue();
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void dataQueueEnqueue(AudioFrame* frame);
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AudioFrame* dataQueueDequeue();
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// Meta info about stream
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AudioFrame* getCurrent();
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// Data info about "stream" (calculated from the packets)
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int getLen();
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// copy from packets to destination
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int copy(float* left,float* right,int len);
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int copy(short int* left,short int* right,int len);
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void forwardStreamDouble(int len);
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int copy(short int* dest,int len);
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int copy(float* dest,int len);
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void forwardStreamSingle(int len);
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void clear();
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private:
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void transferFrame(float* left,float* right,FloatFrame*,int start,int len);
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void transferFrame(short int* left,short int* right,
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PCMFrame*,int start,int len);
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void transferFrame(short int* dest,
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PCMFrame*,int start,int len);
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void transferFrame(float* dest,
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FloatFrame*,int start,int len);
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int copygeneric(char* left,char* right,int wantLen,int version,int mux);
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};
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#endif
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