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166 lines
3.4 KiB
166 lines
3.4 KiB
/*
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Copyright (C) 2000 Stefan Westerfeld
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stefan@space.twc.de
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "audioio.h"
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#include <map>
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#include <list>
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#include <assert.h>
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#include <cstring>
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using namespace Arts;
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using namespace std;
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class Arts::AudioIOPrivate {
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public:
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map<AudioIO::AudioParam, int> paramMap;
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map<AudioIO::AudioParam, string> paramStrMap;
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};
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AudioIO::AudioIO() :d(new AudioIOPrivate)
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{
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}
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AudioIO::~AudioIO()
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{
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delete d;
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}
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int& AudioIO::param(AudioParam param)
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{
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/*
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* returns d->paramMap[param], initializes new elements with -1 (for those
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* parameters not handled explicitly by the derived AudioIO* class).
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*/
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map<AudioIO::AudioParam, int>::iterator pi = d->paramMap.find(param);
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if(pi == d->paramMap.end())
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{
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int& result = d->paramMap[param];
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result = -1;
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return result;
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}
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else return pi->second;
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}
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string& AudioIO::paramStr(AudioParam param)
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{
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return d->paramStrMap[param];
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}
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void AudioIO::setParamStr(AudioParam p, const char *value)
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{
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paramStr(p) = value;
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}
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void AudioIO::setParam(AudioParam p, int& value)
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{
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param(p) = value;
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}
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int AudioIO::getParam(AudioParam p)
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{
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return param(p);
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}
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const char *AudioIO::getParamStr(AudioParam p)
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{
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return paramStr(p).c_str();
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}
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/* ---- factories ---- */
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static list<AudioIOFactory *> *audioIOFactories = 0;
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AudioIO *AudioIO::createAudioIO(const char *name)
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{
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if(audioIOFactories)
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{
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list<AudioIOFactory *>::iterator i;
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for(i = audioIOFactories->begin(); i != audioIOFactories->end(); i++)
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{
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AudioIOFactory *factory = *i;
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if(strcmp(factory->name(),name) == 0)
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return factory->createAudioIO();
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}
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}
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return 0;
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}
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int AudioIO::queryAudioIOCount()
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{
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return audioIOFactories->size();
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}
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int AudioIO::queryAudioIOParam(int /*audioIO*/, AudioParam /*p*/)
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{
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return 0;
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}
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const char *AudioIO::queryAudioIOParamStr(int audioIO, AudioParam p)
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{
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list<AudioIOFactory *>::iterator i = audioIOFactories->begin();
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while(audioIO && i != audioIOFactories->end()) { i++; audioIO--; }
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if(i == audioIOFactories->end()) return 0;
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switch(p)
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{
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case name:
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return (*i)->name();
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case fullName:
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return (*i)->fullName();
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default:
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return 0;
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}
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}
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void AudioIO::addFactory(AudioIOFactory *factory)
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{
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if(!audioIOFactories)
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audioIOFactories = new list<AudioIOFactory *>;
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audioIOFactories->push_back(factory);
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}
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void AudioIO::removeFactory(AudioIOFactory *factory)
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{
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assert(audioIOFactories);
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audioIOFactories->remove(factory);
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if(audioIOFactories->empty())
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{
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delete audioIOFactories;
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audioIOFactories = 0;
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}
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}
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void AudioIOFactory::startup()
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{
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AudioIO::addFactory(this);
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}
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void AudioIOFactory::shutdown()
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{
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AudioIO::removeFactory(this);
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}
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