1 files changed, 165 insertions, 0 deletions
diff --git a/flow/audioio.cc b/flow/audioio.cc
new file mode 100644
index 0000000..e5924ab
--- /dev/null
+++ b/flow/audioio.cc
@@ -0,0 +1,165 @@
+    /*
+
+    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., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, 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);
+}