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Diffstat (limited to 'src/3rdparty/phonon/qt7/mediaobjectaudionode.mm')
| -rw-r--r-- | src/3rdparty/phonon/qt7/mediaobjectaudionode.mm | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/3rdparty/phonon/qt7/mediaobjectaudionode.mm b/src/3rdparty/phonon/qt7/mediaobjectaudionode.mm new file mode 100644 index 0000000000..66d6041514 --- /dev/null +++ b/src/3rdparty/phonon/qt7/mediaobjectaudionode.mm @@ -0,0 +1,207 @@ +/* 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 |