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124 lines
2.6 KiB
124 lines
2.6 KiB
15 years ago
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/*
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output to arts
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Copyright (C) 2000 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 __ARTSOUTPUTSTREAM_H
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#define __ARTSOUTPUTSTREAM_H
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#include "outputStream.h"
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#include "../input/bufferInputStream.h"
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#include "audioTime.h"
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class WindowOut;
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class AVSyncer;
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/**
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a word about synchronisation: Arts currently has not asynchronous
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starting of stream, which means, poll if stream is initialized
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or set a callbackfunction.
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mpeglib is threaded and would not have much problems
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with a "callback" but currently we only support blocking wait
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for initilisation.
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I think, if people realize that smooth mixing of streams
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is impossible(because of the blocking start behaviour),
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this will become a desired feature :-)
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*/
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/**
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This class offers a blocking device, its behaviour is similar
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to /dev/dsp we use a buffer to store the pcm data, if
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we open/close the buffer the stored data is removed
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and the blocking thread is "kicked"
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Arts must first wait for an init signal. it has its own
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method to check for eof. during seek we close this
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device, after seek we reopen it.
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close and open have the same functionality, they simply
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clear the buffer.
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*/
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class ArtsOutputStream : public OutputStream {
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BufferInputStream* stream;
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AudioTime* audioTime;
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void (*streamStateChangeCallback)(void*);
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WindowOut* x11Window;
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AVSyncer* avSyncer;
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int privateBufferSize;
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class ThreadQueue* threadQueue;
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public:
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ArtsOutputStream(void (*streamStateChangeCallback)(void*));
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~ArtsOutputStream();
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// Audio part
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int audioSetup(int freq,int stereo,int sign,int big,int sampleSize);
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void audioClose();
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void audioOpen();
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void audioFlush();
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int audioPlay(TimeStamp* startStamp,
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TimeStamp* endStamp,char *buffer, int size);
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AudioTime* getAudioTime();
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int getPreferredDeliverSize();
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// Video part
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int openWindow(int width, int height,const char *title);
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int x11WindowId();
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void closeWindow();
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void flushWindow();
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PictureArray* lockPictureArray();
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void unlockPictureArray(PictureArray* pictureArray);
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int getFrameusec();
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void config(const char* key,const char* value,void* user_data);
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// Remote read extension
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int read(char** buffer,int bytes);
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void forwardReadPtr(int bytes);
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// buffer control
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int getBufferFillgrade();
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// sync control
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void setAudioBufferSize(int size);
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private:
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void sendSignal(int state,int value);
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void initStream();
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};
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#endif
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