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/*
*
* $Id: k3baudioserver.cpp 619556 2007-01-03 17:38:12Z trueg $
* Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* See the file "COPYING" for the exact licensing terms.
*/
#include <k3bcore.h>
#include <k3bthread.h>
#include <k3bprogressinfoevent.h>
#include "k3baudioserver.h"
#include "k3baudioclient.h"
#include "k3bpluginmanager.h"
#include "k3baudiooutputplugin.h"
#include <kdebug.h>
#include <kapplication.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <k3bthread.h>
K3bAudioServer* K3bAudioServer::s_instance = 0;
class K3bAudioServer::Private : public K3bThread
{
public:
Private( K3bAudioServer* s )
: m_streaming(false),
m_server(s) {
setProgressInfoEventHandler( m_server );
}
void stop() {
m_streaming = false;
}
protected:
void run() {
m_streaming = true;
char buffer[2048*10];
while( m_streaming ) {
int len = m_server->m_client->read( buffer, 2048*10 );
if( len > 0 ) {
if( m_server->m_pluginInitialized ) {
if( write( buffer, len ) < 0 ) {
kdDebug() << "Audio Streaming failed: " << m_server->m_usedOutputPlugin->lastErrorMessage() << endl;
emitInfoMessage( m_server->m_usedOutputPlugin->lastErrorMessage(), 0 );
return;
}
}
// else just drop the data into space...
}
else {
// FIXME: no data or error... what to do?
}
}
}
int write( char* buffer, int len ) {
int written = m_server->m_usedOutputPlugin->write( buffer, len );
return written;
// if( written < 0 )
// return -1;
// else if( written < len )
// return write( buffer+written, len-written ) + written;
// else
// return len;
}
private:
bool m_streaming;
K3bAudioServer* m_server;
};
K3bAudioServer::K3bAudioServer( QObject* parent, const char* name )
: QObject( parent, name ),
m_usedOutputPlugin(0),
m_pluginInitialized(false),
m_client(0)
{
s_instance = this;
d = new Private( this );
}
K3bAudioServer::~K3bAudioServer()
{
delete d;
s_instance = 0;
}
bool K3bAudioServer::setOutputMethod( const QCString& name )
{
if( K3bAudioOutputPlugin* p = findOutputPlugin( name ) ) {
setOutputPlugin( p );
return true;
}
else
return false;
}
void K3bAudioServer::setOutputPlugin( K3bAudioOutputPlugin* p )
{
if( p != m_usedOutputPlugin ) {
bool restart = d->running();
if( restart ) {
d->stop();
d->wait();
}
if( m_usedOutputPlugin ) {
m_usedOutputPlugin->cleanup();
m_pluginInitialized = false;
}
m_usedOutputPlugin = p;
if( restart )
d->start();
}
}
void K3bAudioServer::attachClient( K3bAudioClient* c )
{
// for now we simply allow only one client and stop the old one
if( m_client ) {
kdDebug() << "(K3bAudioServer) leaving old client hanging. :(" << endl;
detachClient( m_client );
}
m_client = c;
if( m_usedOutputPlugin && !m_pluginInitialized ) {
if( !m_usedOutputPlugin->init() ) {
emit error( i18n("Could not initialize Audio Output plugin %1 (%2)")
.arg(m_usedOutputPlugin->pluginInfo().name())
.arg(m_usedOutputPlugin->lastErrorMessage()) );
}
else
m_pluginInitialized = true;
}
else
kdDebug() << "(K3bAudioServer::attachClient) no output plugin selected. Using null output." << endl;
// start the streaming
d->start();
}
void K3bAudioServer::detachClient( K3bAudioClient* c )
{
if( m_client == c ) {
m_client = 0;
// stop the streaming
d->stop();
d->wait();
if( m_usedOutputPlugin && m_pluginInitialized ) {
m_usedOutputPlugin->cleanup();
m_pluginInitialized = false;
}
}
}
K3bAudioOutputPlugin* K3bAudioServer::findOutputPlugin( const QCString& name )
{
QPtrList<K3bPlugin> fl = k3bcore->pluginManager()->plugins( "AudioOutput" );
for( QPtrListIterator<K3bPlugin> it( fl ); it.current(); ++it ) {
K3bAudioOutputPlugin* f = dynamic_cast<K3bAudioOutputPlugin*>( it.current() );
if( f && f->soundSystem() == name ) {
return f;
}
}
kdDebug() << "(K3bAudioServer::findOutputPlugin) could not find output plugin " << name << endl;
return 0;
}
void K3bAudioServer::customEvent( QCustomEvent* e )
{
if( K3bProgressInfoEvent* be = dynamic_cast<K3bProgressInfoEvent*>(e) ) {
if( be->type() == K3bProgressInfoEvent::InfoMessage ) {
emit error( be->firstString() );
}
}
}
#include "k3baudioserver.moc"
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