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/*
Copyright (C) 2000 Stefan Westerfeld
stefan@space.twc.de
This library 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; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "audioio.h"
#include <map>
#include <list>
#include <assert.h>
#include <cstring>
using namespace Arts;
using namespace std;
class Arts::AudioIOPrivate {
public:
map<AudioIO::AudioParam, int> paramMap;
map<AudioIO::AudioParam, string> paramStrMap;
};
AudioIO::AudioIO() :d(new AudioIOPrivate)
{
}
AudioIO::~AudioIO()
{
delete d;
}
int& AudioIO::param(AudioParam param)
{
/*
* returns d->paramMap[param], initializes new elements with -1 (for those
* parameters not handled explicitly by the derived AudioIO* class).
*/
map<AudioIO::AudioParam, int>::iterator pi = d->paramMap.find(param);
if(pi == d->paramMap.end())
{
int& result = d->paramMap[param];
result = -1;
return result;
}
else return pi->second;
}
string& AudioIO::paramStr(AudioParam param)
{
return d->paramStrMap[param];
}
void AudioIO::setParamStr(AudioParam p, const char *value)
{
paramStr(p) = value;
}
void AudioIO::setParam(AudioParam p, int& value)
{
param(p) = value;
}
int AudioIO::getParam(AudioParam p)
{
return param(p);
}
const char *AudioIO::getParamStr(AudioParam p)
{
return paramStr(p).c_str();
}
/* ---- factories ---- */
static list<AudioIOFactory *> *audioIOFactories = 0;
AudioIO *AudioIO::createAudioIO(const char *name)
{
if(audioIOFactories)
{
list<AudioIOFactory *>::iterator i;
for(i = audioIOFactories->begin(); i != audioIOFactories->end(); i++)
{
AudioIOFactory *factory = *i;
if(strcmp(factory->name(),name) == 0)
return factory->createAudioIO();
}
}
return 0;
}
int AudioIO::queryAudioIOCount()
{
return audioIOFactories->size();
}
int AudioIO::queryAudioIOParam(int /*audioIO*/, AudioParam /*p*/)
{
return 0;
}
const char *AudioIO::queryAudioIOParamStr(int audioIO, AudioParam p)
{
list<AudioIOFactory *>::iterator i = audioIOFactories->begin();
while(audioIO && i != audioIOFactories->end()) { i++; audioIO--; }
if(i == audioIOFactories->end()) return 0;
switch(p)
{
case name:
return (*i)->name();
case fullName:
return (*i)->fullName();
default:
return 0;
}
}
void AudioIO::addFactory(AudioIOFactory *factory)
{
if(!audioIOFactories)
audioIOFactories = new list<AudioIOFactory *>;
audioIOFactories->push_back(factory);
}
void AudioIO::removeFactory(AudioIOFactory *factory)
{
assert(audioIOFactories);
audioIOFactories->remove(factory);
if(audioIOFactories->empty())
{
delete audioIOFactories;
audioIOFactories = 0;
}
}
void AudioIOFactory::startup()
{
AudioIO::addFactory(this);
}
void AudioIOFactory::shutdown()
{
AudioIO::removeFactory(this);
}
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