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