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/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mediaobjectaudionode.h"
#include "quicktimeaudioplayer.h"
#include "quicktimevideoplayer.h"
#include "audiomixer.h"
QT_BEGIN_NAMESPACE
namespace Phonon
{
namespace QT7
{
MediaObjectAudioNode::MediaObjectAudioNode(QuickTimeAudioPlayer *player1, QuickTimeAudioPlayer *player2) : AudioNode(0, 1)
{
m_mute = false;
m_player1 = player1;
m_player2 = player2;
m_mixer = new AudioMixerAudioNode();
m_connection1 = new AudioConnection(m_player1, 0, m_mixer, 0);
m_connection2 = new AudioConnection(m_player2, 0, m_mixer, 1);
m_fadeDuration = 0;
}
MediaObjectAudioNode::~MediaObjectAudioNode()
{
setGraph(0);
delete m_player1;
delete m_player2;
delete m_mixer;
delete m_connection1;
delete m_connection2;
}
void MediaObjectAudioNode::createAndConnectAUNodes()
{
DEBUG_AUDIO_GRAPH("(MediaObjectAudioNode" << int(this) << "createAndConnectAUNodes called)" )
m_player1->createAndConnectAUNodes();
m_player2->createAndConnectAUNodes();
m_mixer->createAndConnectAUNodes();
m_connection1->connect(m_audioGraph);
m_connection2->connect(m_audioGraph);
}
void MediaObjectAudioNode::createAudioUnits()
{
DEBUG_AUDIO_GRAPH("(MediaObjectAudioNode" << int(this) << "createAudioUnits called)" )
m_player1->createAudioUnits();
m_player2->createAudioUnits();
m_mixer->createAudioUnits();
}
void MediaObjectAudioNode::setGraph(AudioGraph *audioGraph)
{
DEBUG_AUDIO_GRAPH("MediaObjectAudioNode" << int(this) << "is setting graph:" << int(audioGraph))
m_audioGraph = audioGraph;
m_player1->setGraph(audioGraph);
m_player2->setGraph(audioGraph);
m_mixer->setGraph(audioGraph);
}
AUNode MediaObjectAudioNode::getOutputAUNode()
{
return m_mixer->getOutputAUNode();
}
bool MediaObjectAudioNode::fillInStreamSpecification(AudioConnection *connection, ConnectionSide side)
{
if (side == Source){
DEBUG_AUDIO_STREAM("(MediaObjectAudioNode" << int(this) << "fillInStreamSpecification called, role = source)")
return m_mixer->fillInStreamSpecification(connection, side);
} else {
DEBUG_AUDIO_STREAM("(MediaObjectAudioNode" << int(this) << "fillInStreamSpecification called, role = sink)")
return (m_connection2->updateStreamSpecification() && m_connection1->updateStreamSpecification());
}
}
bool MediaObjectAudioNode::setStreamSpecification(AudioConnection *connection, ConnectionSide side)
{
if (side == Source){
DEBUG_AUDIO_STREAM("(MediaObjectAudioNode" << int(this) << "setStreamSpecification called, role = source)")
return m_mixer->setStreamSpecification(connection, side);
}
return true;
}
void MediaObjectAudioNode::setMute(bool mute)
{
m_mute = mute;
m_mixer->setVolume(m_mute ? 0 : m_volume1, m_connection1->m_sinkInputBus);
m_mixer->setVolume(m_mute ? 0 : m_volume2, m_connection2->m_sinkInputBus);
}
void MediaObjectAudioNode::updateVolume()
{
if (m_mute)
return;
QuickTimeVideoPlayer *player1 = static_cast<QuickTimeAudioPlayer *>(m_connection1->m_sourceAudioNode)->videoPlayer();
QuickTimeVideoPlayer *player2 = static_cast<QuickTimeAudioPlayer *>(m_connection2->m_sourceAudioNode)->videoPlayer();
if (player1)
player1->setRelativeVolume(m_volume1);
if (player2)
player2->setRelativeVolume(m_volume2);
m_mixer->setVolume(m_volume1, m_connection1->m_sinkInputBus);
m_mixer->setVolume(m_volume2, m_connection2->m_sinkInputBus);
}
void MediaObjectAudioNode::startCrossFade(qint64 duration)
{
m_fadeDuration = duration;
// Swap:
AudioConnection *tmp = m_connection1;
m_connection1 = m_connection2;
m_connection2 = tmp;
// Init volume:
if (m_fadeDuration > 0){
m_volume1 = 0;
m_volume2 = 1;
} else {
m_volume1 = 1;
m_volume2 = 0;
}
updateVolume();
}
float MediaObjectAudioNode::applyCurve(float volume)
{
float newValue = 0;
if (volume > 0)
newValue = float(0.5f * (2 + log10(volume)));
return newValue;
}
void MediaObjectAudioNode::updateCrossFade(qint64 currentTime)
{
// Assume that currentTime starts at 0 and progress.
if (m_fadeDuration > 0){
float volume = float(currentTime) / float(m_fadeDuration);
if (volume >= 1){
volume = 1;
m_fadeDuration = 0;
}
m_volume1 = applyCurve(volume);
m_volume2 = 1 - volume;
updateVolume();
}
}
bool MediaObjectAudioNode::isCrossFading()
{
return (m_fadeDuration > 0);
}
void MediaObjectAudioNode::cancelCrossFade()
{
m_fadeDuration = 0;
m_volume1 = 1;
m_volume2 = 0;
updateVolume();
}
void MediaObjectAudioNode::mediaNodeEvent(const MediaNodeEvent *event)
{
switch (event->type()){
case MediaNodeEvent::AudioGraphAboutToBeDeleted:
m_connection1->invalidate();
m_connection2->invalidate();
break;
case MediaNodeEvent::AudioGraphCannotPlay:
case MediaNodeEvent::AudioGraphInitialized:
updateVolume();
break;
default:
break;
}
m_player1->mediaNodeEvent(event);
m_player2->mediaNodeEvent(event);
m_mixer->mediaNodeEvent(event);
}
}} //namespace Phonon::QT7
QT_END_NAMESPACE
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