/*
 * Copyright 2007-2009, Haiku. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Stephan Aßmus <superstippi@gmx.de>
 */
#ifndef CONTROLLER_OBSERVER_H
#define CONTROLLER_OBSERVER_H


#include "AbstractLOAdapter.h"
#include "Controller.h"


enum {
        MSG_CONTROLLER_FILE_FINISHED                    = 'cnff',
        MSG_CONTROLLER_FILE_CHANGED                             = 'cnfc',

        MSG_CONTROLLER_VIDEO_TRACK_CHANGED              = 'cnvt',
        MSG_CONTROLLER_AUDIO_TRACK_CHANGED              = 'cnat',
        MSG_CONTROLLER_SUB_TITLE_TRACK_CHANGED  = 'cnst',

        MSG_CONTROLLER_VIDEO_STATS_CHANGED              = 'cnvs',
        MSG_CONTROLLER_AUDIO_STATS_CHANGED              = 'cnas',

        MSG_CONTROLLER_PLAYBACK_STATE_CHANGED   = 'cnps',
        MSG_CONTROLLER_POSITION_CHANGED                 = 'cnpc',
        MSG_CONTROLLER_SEEK_HANDLED                             = 'cnsh',
        MSG_CONTROLLER_VOLUME_CHANGED                   = 'cnvc',
        MSG_CONTROLLER_MUTED_CHANGED                    = 'cnmc'
};

enum {
        OBSERVE_FILE_CHANGES                                    = 0x0001,
        OBSERVE_TRACK_CHANGES                                   = 0x0002,
        OBSERVE_STAT_CHANGES                                    = 0x0004,
        OBSERVE_PLAYBACK_STATE_CHANGES                  = 0x0008,
        OBSERVE_POSITION_CHANGES                                = 0x0010,
        OBSERVE_VOLUME_CHANGES                                  = 0x0020,

        OBSERVE_ALL_CHANGES                                             = 0xffff
};


class ControllerObserver
        : public Controller::Listener, public AbstractLOAdapter {
public:
                                                ControllerObserver(BHandler* target,
                                                        uint32 observeFlags = OBSERVE_ALL_CHANGES);
        virtual                         ~ControllerObserver();

        // Controller::Listener interface
        virtual void            FileFinished();
        virtual void            FileChanged(PlaylistItem* item, status_t result);

        virtual void            VideoTrackChanged(int32 index);
        virtual void            AudioTrackChanged(int32 index);
        virtual void            SubTitleTrackChanged(int32 index);

        virtual void            VideoStatsChanged();
        virtual void            AudioStatsChanged();

        virtual void            PlaybackStateChanged(uint32 state);
        virtual void            PositionChanged(float position);
        virtual void            SeekHandled(int64 seekFrame);
        virtual void            VolumeChanged(float volume);
        virtual void            MutedChanged(bool muted);

private:
                        uint32          fObserveFlags;
};

#endif // CONTROLLER_OBSERVER_H