source: trunk/src/3rdparty/phonon/qt7/quicktimeaudioplayer.h

/*  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/>.
*/

#ifndef Phonon_QT7_QUICKTIMEAUDIOPLAYER_H
#define Phonon_QT7_QUICKTIMEAUDIOPLAYER_H

#include "backendheader.h"

#ifdef QUICKTIME_C_API_AVAILABLE
    #include <QuickTime/QuickTime.h>
    #undef check // avoid name clash;
#endif

#include <phonon/mediasource.h>
#include <Carbon/Carbon.h>
#include <QtCore/QString>
#include "audionode.h"

QT_BEGIN_NAMESPACE

namespace Phonon
{
namespace QT7
{
    class AudioGraph;
    class MediaNodeEvent;
    class QuickTimeVideoPlayer;

    class QuickTimeAudioPlayer : public AudioNode
    {
        public:
            enum State {Playing, Paused, NoMedia, NoState};

            QuickTimeAudioPlayer();
            virtual ~QuickTimeAudioPlayer();

            void play();
            void pause();
            void seek(quint64 milliseconds);
            void enableAudio(bool enable);
                bool audioEnabled();
            void flush();

            void setVideoPlayer(QuickTimeVideoPlayer *videoPlayer);
            void unsetVideoPlayer();

            bool hasAudio();
            bool isPlaying();
            void scheduleAudioToGraph();
            long regularTaskFrequency();
            quint64 currentTime();
            QString currentTimeString();
            QuickTimeVideoPlayer *videoPlayer();

            ComponentDescription getAudioNodeDescription() const;
            void initializeAudioUnit();
            bool fillInStreamSpecification(AudioConnection *connection, ConnectionSide side);
            void mediaNodeEvent(const MediaNodeEvent *event);

            static bool soundPlayerIsAwailable();

        private:
            void initSoundExtraction();
            void newGraphNotification();
            void allocateSoundSlices();
            void scheduleSoundSlices();

            State m_state;
            QuickTimeVideoPlayer *m_videoPlayer;

#ifdef QUICKTIME_C_API_AVAILABLE
            MovieAudioExtractionRef m_audioExtractionRef;
#endif

            ScheduledAudioSlice *m_sliceList;
            AudioChannelLayout *m_audioChannelLayout;
            UInt32 m_audioChannelLayoutSize;
            AudioStreamBasicDescription m_audioStreamDescription;

            bool m_discrete;
            bool m_playerUnitStarted;
            bool m_audioExtractionComplete;
            bool m_audioEnabled;
            bool m_audioUnitIsReset;

            long m_samplesRemaining;
            int m_sliceCount;
            int m_maxExtractionPacketCount;

            Float64 m_sampleTimeStamp;
            quint64 m_startTime;
    };

}} // namespace Phonon::QT7

QT_END_NAMESPACE

#endif // Phonon_QT7_QUICKTIMEAUDIOPLAYER_H