pluginlist.cpp

Qtopia下的多媒体录音源码

/****************************************************************************
**
** Copyright (C) 2000-2006 TROLLTECH ASA. All rights reserved.
**
** This file is part of the Phone Edition of the Qtopia Toolkit.
**
** Licensees holding a valid license agreement from Trolltech or any of its
** authorized distributors may use this file in accordance with
** the License Agreement provided with the Licensed Software.
**
** See http://www.trolltech.com/pricing.html or email [e-mail] for
**   information about Trolltech's Commercial License Agreements.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
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**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include "pluginlist.h"

#include <qtopia/qtopiaapplication.h>

#include <qtopia/qpluginmanager.h>
#include <qtopia/qtopialog.h>
#include <qdir.h>


#ifdef QT_NO_COMPONENT
// Plugins that are compiled in when no plugin architecture available.
#include "../../plugins/codecs/wavrecord/wavrecordimpl.h"

#endif // QT_NO_COMPONENT


MediaRecorderPluginList::MediaRecorderPluginList()
{
#ifndef QT_NO_COMPONENT
    loader = new QPluginManager( "codecs" );
    foreach( QString name, loader->list() ) {
	MediaRecorderCodecPlugin *plugin = 0;
	qDebug() << "querying: " << name;
        QObject *obj = loader->instance( name );
        
        if( ( plugin = qobject_cast<MediaRecorderCodecPlugin*>( obj ) ) != 0 ) {
            if( plugin->keys().contains( "MediaRecorderCodecPlugin" ) ) {
		addFormats( plugin );
	    }
	}
    }
    if ( pluginList.count() ) 
	qDebug() << pluginList.count() << " encoders found"; // No tr
    else
	qDebug() << "No encoders found"; // No tr
#else
    // No component support - load the compiled-in encoders.
    loader = 0;
    MediaRecorderPluginInterface *iface = new WavRecorderPluginImpl();
    addFormats( iface );
#endif
}


MediaRecorderPluginList::~MediaRecorderPluginList()
{
#ifndef QT_NO_COMPONENT
    if ( loader ) {
        foreach( MediaRecorderPlugin codec, pluginList ) {
	    if ( codec.plugin )
		delete codec.plugin;
        }
	pluginList.clear();
	delete loader;
	loader = 0;
    }
#else
    pluginList.clear();
#endif
}


MediaRecorderEncoder *MediaRecorderPluginList::fromType( const QString& type, const QString& tag )
{
    uint numPlugins;
    uint plugin;
    MediaRecorderEncoder *encoder;
    QString format;

    numPlugins = count();

    for ( plugin = 0; plugin < numPlugins; ++plugin ) {
	encoder = pluginList[plugin].encoder;
	format = pluginList[plugin].format;
	if ( type == encoder->pluginMimeType() && tag == format ) {
	    return encoder;
	}
    }

    return 0;
}


int MediaRecorderPluginList::indexFromType( const QString& type, const QString& tag )
{
    uint numPlugins;
    uint plugin;
    MediaRecorderEncoder *encoder;
    QString format;

    numPlugins = count();

    for ( plugin = 0; plugin < numPlugins; ++plugin ) {
	encoder = pluginList[plugin].encoder;
	format = pluginList[plugin].format;
	if ( type == encoder->pluginMimeType() && tag == format ) {
	    return (int)plugin;
	}
    }

    return -1;
}


void MediaRecorderPluginList::addFormats( MediaRecorderCodecPlugin *iface )
{
    MediaRecorderPlugin plugin;
    MediaRecorderEncoder *encoder;
    int nformats, format;

    encoder = iface->encoder();
    nformats = encoder->pluginNumFormats();

    for ( format = 0; format < nformats; ++format ) {

	plugin.plugin = iface;
	plugin.encoder = encoder;
	plugin.format = encoder->pluginFormatTag( format );
	plugin.formatName = encoder->pluginFormatName( format );
	pluginList.append( plugin );

        qDebug() << "recorder found for " // No tr
	         << plugin.encoder->pluginMimeType()
		 << " ["
		 << plugin.format
		 << "]";

	iface = 0;
    }
}