1 /*  This file is part of the KDE project.

     2 

     3     Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 

     5     This library is free software: you can redistribute it and/or modify

     6     it under the terms of the GNU Lesser General Public License as published by

     7     the Free Software Foundation, either version 2.1 or 3 of the License.

     8 

     9     This library is distributed in the hope that it will be useful,

    10     but WITHOUT ANY WARRANTY; without even the implied warranty of

    11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12     GNU Lesser General Public License for more details.

    13 

    14     You should have received a copy of the GNU Lesser General Public License

    15     along with this library.  If not, see <http://www.gnu.org/licenses/>.

    16 */

    17 

    18 #ifndef Phonon_QT7_MEDIAOBJECTAUDIONODE_H

    19 #define Phonon_QT7_MEDIAOBJECTAUDIONODE_H

    20 

    21 #include <QtCore/qnamespace.h>

    22 #include "audionode.h"

    23 

    24 QT_BEGIN_NAMESPACE

    25 

    26 namespace Phonon

    27 {

    28 namespace QT7

    29 {

    30     class QuickTimeAudioPlayer;

    31     class AudioMixerAudioNode;

    32     class AudioConnection;

    33 

    34     class MediaObjectAudioNode : public AudioNode

    35     {

    36         public:

    37             MediaObjectAudioNode(QuickTimeAudioPlayer *player1, QuickTimeAudioPlayer *player2);

    38             ~MediaObjectAudioNode();

    39 

    40             // Overridden section from AudioNode:

    41             void createAndConnectAUNodes();

    42             void createAudioUnits();

    43             void setGraph(AudioGraph *audioGraph);

    44             AUNode getOutputAUNode();

    45             bool fillInStreamSpecification(AudioConnection *connection, ConnectionSide side);

    46             bool setStreamSpecification(AudioConnection *connection, ConnectionSide side);

    47 

    48             void startCrossFade(qint64 duration);

    49             void updateCrossFade(qint64 currentTime);

    50             void cancelCrossFade();

    51             void setMute(bool mute);

    52             bool isCrossFading();

    53 

    54             QuickTimeAudioPlayer *m_player1;

    55             QuickTimeAudioPlayer *m_player2;

    56             AudioMixerAudioNode *m_mixer;

    57 

    58             AudioConnection *m_connection1;

    59             AudioConnection *m_connection2;

    60 

    61             float m_fadeDuration;

    62             float m_volume1;

    63             float m_volume2;

    64             float m_mute;

    65 

    66             float applyCurve(float volume);

    67             void updateVolume();

    68 

    69             void mediaNodeEvent(const MediaNodeEvent *event);

    70     };

    71 

    72 }} //namespace Phonon::QT7

    73 

    74 QT_END_NAMESPACE

    75 #endif // Phonon_QT7_MEDIAOBJECTAUDIONODE_H