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107 lines
2.8 KiB
107 lines
2.8 KiB
/*
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Copyright (C) 2000 Stefan Westerfeld
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stefan@space.twc.de
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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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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Permission is also granted to link this program with the Qt
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library, treating Qt like a library that normally accompanies the
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operating system kernel, whether or not that is in fact the case.
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*/
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#include "soundserver.h"
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#include "stdsynthmodule.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <iostream>
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#include <math.h>
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using namespace std;
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using namespace Arts;
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class Sender : public ByteSoundProducer_skel,
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public StdSynthModule
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{
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bool _finished;
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int pos;
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public:
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Sender() : _finished(false), pos(0)
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{
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}
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long samplingRate() { return 44100; }
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long channels() { return 2; }
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long bits() { return 16; }
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bool finished() { return _finished; }
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static const int packetCount = 10, packetCapacity = 1024;
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void streamStart()
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{
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/*
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* start streaming
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*/
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outdata.setPull(packetCount, packetCapacity);
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}
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void request_outdata(DataPacket<mcopbyte> *packet)
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{
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/*
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* fill the packet with new data
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*/
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// ----------------- audio fill up start -----------------
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int j;
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mcopbyte *to = &packet->contents[0];
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for(j=0;j<packetCapacity/4;j++)
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{
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// generate two sin waves
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float fpos = ((float)pos)/44100.0;
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long left = (long)(sin(fpos*6.28*440.0)*30000.0);
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long right = (long)(sin(fpos*6.28*880.0)*30000.0);
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pos++;
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// put the samples in the packet
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*to++ = left & 0xff;
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*to++ = (left >> 8) & 0xff;
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*to++ = right & 0xff;
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*to++ = (right >> 8) & 0xff;
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}
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// ------------------ audio fill up end ------------------
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packet->send();
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}
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};
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int main(int argc, char **argv)
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{
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Dispatcher dispatcher;
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SimpleSoundServer server = Reference("global:Arts_SimpleSoundServer");
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if(server.isNull())
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{
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cerr << "Can't connect to sound server" << endl;
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return 1;
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}
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ByteSoundProducer sender = ByteSoundProducer::_from_base(new Sender());
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server.attach(sender);
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sender.start();
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dispatcher.run();
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server.detach(sender); // in this example: not reached
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}
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