/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Implementation of interface for playbackutility

*

*/

#ifndef CMPXPLAYBACKUTILITY_H

#define CMPXPLAYBACKUTILITY_H

#include <e32base.h>

#include <f32file.h>

#include <mpxplaybackobserver.h>

#include <mpxplaybackmessage.h>

#include <mpxsession.h>

#include <mpxmessageobserver.h>

#include "mpxplaybackutility.h"

class CMPXMessageMonitor;

class CMPXTaskQueue;

NONSHARABLE_STRUCT( TMPXPlaybackUtilityStruct )

    {

    // Default mode playback utility

    MMPXPlaybackUtility* iDefaultPlaybackUtility;

    };

/**

*  Implementation of playback utility interface

*  this interface:

*/

NONSHARABLE_CLASS(CMPXPlaybackUtility) : public MMPXPlaybackUtility,

					                               public MMPXSource

    {

public:

    /**

    * Two-phased constructor

    *

    * @param aModeId playback mode id

    * @param aObs observer

	* @param aCategory category of client / engine

    * @return object of constructed

    */

    static CMPXPlaybackUtility* NewL(const TUid& aModeId,

                                     MMPXPlaybackObserver* aObs,

                                     const TMPXCategory aCategory);

    /**

    * Gets the interface for the client, or creates a new one.

    * This interface could be a singleton

    */

    static MMPXPlaybackUtility* UtilityL( const TUid& aModeId,

                                        const TMPXCategory aCategory);										

private:

    /**

    * Destructor

    */

    ~CMPXPlaybackUtility();

    /**

    * C++ constructor

    */

    CMPXPlaybackUtility();

    /**

    * Second phase constructor

    *

    * @param aModeId playback mode id

    * @param aObs observer

	* @param aCategory category of client / engine

    */

    void ConstructL(const TUid& aModeId, MMPXPlaybackObserver* aObs, const TMPXCategory aCategory);

    /**

    * Second phase constructor

    *

    * @param aObs observer

    */

    void ConstructL(MMPXPlaybackObserver* aObs);

    /**

    *  From MMPXPlaybackUtility

    *  Add a Observer. Clients only receive events from the engine corresponding

    *  to the specific mode the interface was created in

    *

    *  @param aObs, observer to be added

    */

    void AddObserverL(MMPXPlaybackObserver& aObs);

    /**

    *  From MMPXPlaybackUtility

    *  Remove a observer.

    *

    *  @param aObs, observer to be removed

    */

    void RemoveObserverL(MMPXPlaybackObserver& aObs);

    /**

    *  From MMPXPlaybackUtility

    *  Returns PIds of clients that are using the engine in the mode this

    *  interface was created in. For example, if a client was interested in all

    *  the clients' pids with an active engine, they would:

    *

    *       MMPXPlaybackUtility* m=MMPXPlaybackUtility::NewL(EActivePlayer);

    *       RArray<TProcessId> pids;

    *       m->GetClients(pids);

    *       .........

    *       pids->Close();

    *       m->Close();

    *

    *  @param aClients Array of Pids returned.

    */

    void GetClientsL(RArray<TProcessId>& aClients);

    /**

    *  From MMPXPlaybackUtility

    *  Initializes a track given by aCollectionPath

    *

    *  @param aCollectionPath collection path

    *  @param aPlay Whether to initialize for playback, or

    *               else just to setup the engine first

    */

    virtual void InitL(const CMPXCollectionPlaylist& aPlaylist,

                       TBool aPlay=ETrue);

    /**

    *  From MMPXPlaybackUtility

    *  Inititialises with a single item, may not be part of any collection

    *

    *  @param aUri URI of the item

    *  @param aType the mime type of the item

    */

    void InitL(const TDesC& aUri,const TDesC8* aType=NULL);

    /**

    *  From MMPXPlaybackUtility

    *  Inititialises with a single item, may not be part of any collection

    *  Before this function can be called, the file server session which owns

    *  this file handle must first be marked as shareable by calling

    *  RFs::ShareProtected().

    *

    *  @param aFile file handle

    */

    void InitL(RFile& aShareableFile);

    /**

    *  From MMPXPlaybackUtility

    *  Frees up client side resources only; a player is freed when there are no

    *  clients using it, and all resources are freed when the last client closed

    */

    void Close();

    /**

    *  From MMPXPlaybackUtility

    *  Stops any async operations that are currently under way

    */

    void CancelRequest();

    /**

    *  From MMPXPlaybackUtility

    *  Issue player commands, with optional data. ECommandReceived and

    *  ECommandComplete events should follow

    *

    *  @param aCmd the command

    *  @param aData optional data

    */

    void CommandL(TMPXPlaybackCommand aCmd,TInt aData=0);

    /**

     *  From MMPXPlaybackUtility

     *  Send a command to the playback server

     *

     *  @param aCmd, reference to command object

     *  @param aCallback, call back when command exection completed.

     *                    Asynchronously command only

     */

    void CommandL(CMPXCommand& aCmd, MMPXPlaybackCallback* aCallback=NULL);

    /**

    *  From MMPXPlaybackUtility

    *  Current state of player

    *  @return current state

    */

    TMPXPlaybackState StateL() const;

    /**

    *  From MMPXPlaybackUtility

    *  Current source being played, NULL if none was supplied

    *

    *  @return source object

    */

    MMPXSource* Source();

    /**

    *  From MMPXPlaybackUtility

    *  Player manager

    *

    *  @return reference to player manager

    */

    MMPXPlayerManager& PlayerManager();

    /**

    *  From MMPXPlaybackUtility

    *  Set playback property, EPropertyChanged event when complete

    *

    *  @param aProperty the property to be set

    *  @param aValue the the value of the property

    */

    void SetL(TMPXPlaybackProperty aProperty,TInt aValue);

    /**

    *  From MMPXPlaybackUtility

    *  Get value of a playback property, Asyc

    *

    *  @param aCallback playback callback

    *  @param aProperty the property

    */

    void ValueL(MMPXPlaybackCallback& aCallback,TMPXPlaybackProperty aProperty);

    /**

     *  Get value of a playback property, Asyc

     *  Result will be called back in HandleProperty

     *

     *  @param aCallback playback callback

     *  @param aProperty the property

     */

    void PropertyL(MMPXPlaybackCallback& aCallback,

                   TMPXPlaybackProperty aProperty);

    /**

    *  From MMPXPlaybackUtility

    *  Return a list of mime types supported by playback framework

    *

    *  @return an array of mime types

    */

    virtual CDesCArray* SupportedMimeTypes();

    /**

    *  From MMPXPlaybackUtility

    *  Return a list of file extensions supported by playback framework

    *

    *  @return an array of extensions

    */

    virtual CDesCArray* SupportedExtensions();

    /**

    *  From MMPXPlaybackUtility

    *  Return a list of schemas supported by playback framework

    *

    *  @return an array of schemas

    */

    virtual CDesCArray* SupportedSchemas();

    /**

    *  Sets the priority of the playback utility

    *

    *  @param aPriority Priority to set

    */

    virtual void SetPriority( TInt aPriority );

    /**

    * Adds a message subscription for this client.

    * @param aSubscription subscription to be added

    */

    void AddSubscriptionL(const CMPXSubscription& aSubscription);

    /**

    * Removes a message subscription for this client.

    * @param aSubscription subscription to be removed.

    */

    void RemoveSubscriptionL(const CMPXSubscription& aSubscription);

    /**

    * Removes all message subscriptions for this client.

    */

    void ClearSubscriptionsL();

    /**

    *  From MMPXPlayerManager

    *  Typically, a client will obtain the list of all the (non-duplicated)

    *  player 'types' in the system from GetPlayerTypesL and present localized

    *  type names (e.g. "Local","Home network", if possible, else if

    *  non-standard type,should use PlayerTypeDisplayNameL to get text from

    *  player).

    *

    *  User should be given opportunity to choose IF there is more than one

    *  type available, or if there is one type but more than one sub players,

    *  the user could be presented with the sub player list.

    *

    *  @param aTypes the list of player types

    */

    void GetPlayerTypesL(RArray<TMPXPlaybackPlayerType>& aTypes);

    /**

    *  From MMPXPlayerManager

    *  Returns display name for custom types; standard types should be

    *  recognized by client and localized - calling this method would then not

    *  be required

    *

    *  @param aType playback type

    */

    HBufC* PlayerTypeDisplayNameL(TMPXPlaybackPlayerType aType);

    /**

    *  From MMPXPlayerManager

    *  Get the list of UIDs of all players

    *

    *  @param aPlayers All the players' uids in the system

    */

    void GetPlayerListL(RArray<TUid>& aPlayers);

    /**

    *  From MMPXPlayerManager

    *  Get the list of UIDs of players with the specific type

    *

    *  @param aPlayers All the players' uids with the same type

    *  @param aType the type of players

    */

    void GetPlayerListL(RArray<TUid>& aPlayers,TMPXPlaybackPlayerType aType);

    /**

    *  From MMPXPlayerManager

    *  Get the list of sub player names, Async

    *

    *  @param aCallback sub players returned in call back interface

    *  @param aPlayer UID of the player

    */

    void SubPlayerNamesL(MMPXPlaybackCallback& aCallback,TUid aPlayer);

    /**

    *  From MMPXPlayerManager

    *  Client selects all players with the type aType, the specific player used

    *  then being resolved on the basis of the content.

    *

    *  @param aType the type of player

    */

    void SelectPlayersL(TMPXPlaybackPlayerType aType);

    /**

    *  From MMPXPlayerManager

    *  Client selects specific player aPlayer and sub player aSubPlayerIndex

    *  from array returned by SubPlayerNamesL

    *

    *  @param aPlayer the UID of player

    *  @param aSubPlayerIndex the index of the sub player

    */

    void SelectSubPlayerL(TUid aPlayer,TInt aSubPlayerIndex);

    /**

    *  From MMPXPlayerManager

    *  Client selects a specific player

    *

    *  @param aPlayer the UID of the player

    */

    void SelectPlayerL(TUid aPlayer);

    /**

    *  From MMPXPlayerManager

    *  Clears all selection criteria. Essentially the same as

    *  SelectPlayersL(EPbLocal).

    */

    void ClearSelectPlayersL();

    /**

    *  From MMPXPlayerManager

    *  Retreives the current selection: KNullUid and KErrNotFound are possible

    *  return values for aPlayer and aSubPlayerIndex respectively if none are

    *  explicitly selected

    *

    *  @param aType player type

    *  @param aPlayer the UID of player

    *  @param aSubPlayerIndex index of the subplayer

    *  @param aSubPlayerName friendly name of the subplayer

    *         Notes: Client owns the returned aSubPlayerName object.

    */

    void GetSelectionL(TMPXPlaybackPlayerType& aType,

                       TUid& aPlayer,

                       TInt& aSubPlayerIndex,

                       HBufC*& aSubPlayerName);

    /**

    *  From MMPXPlayerManager

    *  The current player, may change with each item, NULL if none found

    *

    *  @return object of current player

    */

    MMPXPlayer* CurrentPlayer();

    /**

    *  From MMPXPlayer

    *  The 'type' of the player. Built-in types are EPbLocal and EPbRemote, but

    *  the plug-ins could extend this if they desire to be a different type

    *  which can be selected by the user

    *

    *  @return player type

    */

    TMPXPlaybackPlayerType TypeL();

    /**

    *  From MMPXPlayer

    *  If TypeL returns a value that is not known to the UI (and therefore

    *  can't localize it),then TypeNameL can be used for unlocalized display

    *  purposes.

    *

    *  @return player name.

    */

    HBufC* TypeNameL();

    /**

    *  From MMPXPlayer

    *  If the player supports other 'players', else array count == 0.

    *

    *  @param aCallback sub players returned in the callback

    */

    void SubPlayerNamesL(MMPXPlaybackCallback& aCallback);

    /**

    *  From MMPXPlayer

    *  Selected sub player index, corresponding to sub player names array.

    *

    *  @return sub player index. KErrNotFound if none

    */

    TInt SubPlayerL() const;

    /**

    *  From MMPXPlayer

    *  The UID identifying this player

    *

    *  @return UID of the player

    */

    TUid UidL() const;

    /**

    *  From MMPXSource

    *  Path to the collection, or NULL if not in any collection

    *  Ownership transferred

    *

    *  @return collection path

    */

    CMPXCollectionPlaylist* PlaylistL();

    /**

    *  From MMPXSource

    *  File passed in, or NULL if none passed in

    *

    *  @return pointer to file handle

    */

    RFile* FileL();

    /**

    *  From MMPXSource

    *  URI of current item

    *

    *  @return URI of the item

    */

    HBufC* UriL();

    /**

    *  From MMPXSource

    *

    *  DEPRECATED

    *

    *  Media request

    *  HandleMediaL of the callback

    *

    *  @param aAttrs attributes requested

    *  @param aCallback playback callback

    */

    void MediaL(const TArray<TMPXAttribute>& aAttrs,

                MMPXPlaybackCallback& aCallback);

    /**

    *  From MMPXSource

    *  Media request

    *  HandleMediaL of the callback

    *

    *  @param aAttrs attributes requested

    *  @param aCallback playback callback

    *  @param aSpecs, specifications for attributes

    */

    void MediaL(const TArray<TMPXAttribute>& aAttrs,

                MMPXPlaybackCallback& aCallback,

                CMPXAttributeSpecs* aSpecs);

#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

    /**

    *  From MMPXSource

    *  File passed in, or NULL if none passed in

    *

    *  @return pointer to file handle

    */

    RFile64* File64L();

#endif // SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API

    /**

    * From CActive

    * Handles an active object's request completion event

    */

    void RunL();

    /**

    * From CActive

    * Implements cancellation of an outstanding request.

    */

    void DoCancel();

    /**

    * From CActive

    * Handles a leave occurring in the request completion event handler RunL()

    *

    * @param aError error code

    */

    TInt RunError(TInt aError);

    /**

     * From MMPXMessageObserver