/*

* 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:    Class is used for controlling MCC.

*

*/

#ifndef MMCCINTERFACE_H

#define MMCCINTERFACE_H

//  INCLUDES

#include <e32base.h>

#include <mmf/common/mmffourcc.h>

#include <mmf/common/mmfstandardcustomcommands.h>

#include <mmccnetworksettings.h>

#include <mmccinterfacedef.h>

#include <mmccevents.h>

// FORWARD DECLARATIONS

class CMccCodecInformation;

class CMccEvent;

class TCameraInfo;

// CONSTANTS

const TUid KUidMccInterface     = { 0x102073F7 };

const TUid KUidMccFileSink      = { 0x102747D7 };

const TUid KUidMccFileSource    = { 0x102747D5 };

const TUid KUidMccRtpSource     = { 0x1020740B };

const TUid KUidMccRtpSink       = { 0x1020740C };

const TUid KUidMccVideoSource   = { 0x102747D6 };

const TUid KUidMccVideoSink     = { 0x102747D8 };

const TUid KUidMccTranscoder    = { 0x10282897 };

const TUid KUidMccAnySource     = { 0x10283394 };

const TUid KUidMccAnySink       = { 0x10283395 };

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// CLASS DECLARATION

/**

*  MCC subsystem client interface. Class is used for setting up and controlling

*  multimedia streams. Details of resources needed by the cleint are unknown, 

*  hence specified in details in every session.

*

*  MCC interface is based on four components: Session, link, stream and endpoint

*  (sink or source). In order to create multimedia streams, client need to

*  construct it by using these four components. 

*

*  @lib mmccinterface.lib

*/

class CMccInterface : public CBase

{

public:  // Constructors and destructor

    /**

    * Two-phased constructor.

    * @param aObserver A callback object to receive and handle

    *                    event notifications from MCC subsystem.

    * @return CMccInterface* Pointer to the interface object created

    */

    IMPORT_C static CMccInterface* NewL( MMccCtrlObserver& aObserver );

    /**

    * Destructor.

    */

    virtual ~CMccInterface();

public: // New functions

    /**

    * Creates a new MCC session. The session is needed to create

    * links and streams into MCC. A single session may have any

    * number of links.

    * @param aSessionID ID of the new session if successful

    * @return KErrNone if success; otherwise system wide error code.

    */

    IMPORT_C TInt CreateSession( TUint32& aSessionId );

    /**

    * Closes MCC session. All links and streams of the session are also

    * closed.

    * @param aSessionId session ID

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt CloseSession( TUint32 aSessionId );

    /**

    * Creates a new MCC link with a remote participant. Link creates

    * new RTP session with given network settings.

    * @param aSessionId session ID

    * @param aLinkType Defines is stream Up- or Downlink

    * @param aLinkId ID of new link

    * @param aNetSettings network settings for the link

    * @return KErrNone if success; otherwise system wide error code.

    */

    IMPORT_C TInt CreateLink( TUint32 aSessionId,

                              TInt aLinkType,

                              TUint32& aLinkId,

                              TMccNetSettings& aNetSettings );

    /**

    * Closes MCC link. All streams of the link are also closed.

    * @param aSessionId session ID

    * @param aLinkId link ID

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt CloseLink( TUint32 aSessionId, TUint32 aLinkId );

    /**

    * Creates a stream into a MCC link. Constructs the datapath

    * for stream, but no media resources reserved yet.

    * @param aSessionId session where stream is created to

    * @param aLinkId link ID where stream is created to

    * @param aStreamId Stream ID for the stream created.

    * @param aStreamType type of the stream

    * @param aCodecInformation Codec information for the stream.

    * @return KErrNone if success; otherwise system wide error code.

    */

    IMPORT_C TInt CreateStream( TUint32 aSessionId, TUint32 aLinkId,

                                TUint32& aStreamId, TInt aStreamType,

                                CMccCodecInformation& aCodecInformation );

    /**

    * Prepares a stream so that it is ready to be started. Media resources

    * are reserved and RTP stream is created.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID where stream belongs to

    * @param aStreamId ID identifying stream to be prepared

    * @param aEndpointId ID identifying endpoint of the stream to be prepared.

    *         If value 0, both endpoints prepared.

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt PrepareStream( TUint32 aSessionId, TUint32 aLinkId, 

                                 TUint32 aStreamId, TUint32 aEndpointId = 0 );

    /**

    * Starts to send/receive media stream in a given session.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be started

    * @param aPaused ETrue, if stream paused after start

    * @param aEndpointId ID identifying endpoint of the stream to be started.

    *         If value 0, both endpoints started.

    * @param aEnableRTCP ETrue, if RTCP sent.

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt StartStream( TUint32 aSessionId, TUint32 aLinkId, 

                               TUint32 aStreamId, TUint32 aEndpointId = 0,

                               TBool aPaused = EFalse, TBool aEnableRTCP = ETrue );

    /**

    * Pauses media stream in a given session. No RTP packets are 

    * sent/received anymore. However, RTCP packets may still be sent and

    * received.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be paused

    * @param aEndpointId ID identifying endpoint of the stream to be paused.

    *         If value 0, both endpoints paused.

    * @param aEnableRTCP ETrue, if RTCP sent while paused.

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt PauseStream( TUint32 aSessionId, TUint32 aLinkId, 

                               TUint32 aStreamId, TUint32 aEndpointId = 0,

                               TBool aEnableRTCP = ETrue );

    /**

    * Resumes paused media stream in a given session.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId Stream ID identifying stream to be resumed

    * @param aEndpointId ID identifying endpoint of the stream to be resumed.

    *         If value 0, both endpoints resumed.

    * @param aEnableRTCP ETrue, if RTCP sent while playing.

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt ResumeStream( TUint32 aSessionId, TUint32 aLinkId, 

                                TUint32 aStreamId, TUint32 aEndpointId = 0,

                                TBool aEnableRTCP = ETrue );

    /**

    * Stops sending/receiving media stream in a given session.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId Stream ID identifying stream to be stopped

    * @param aEndpointId ID identifying endpoint of the stream to be stopped.

    *         If value 0, both endpoints stopped.

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt StopStream( TUint32 aSessionId, TUint32 aLinkId, 

                               TUint32 aStreamId, TUint32 aEndpointId = 0 );

    /**

    * Deletes media stream in a given session.

    * @param aSessionId  session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId  Stream ID identifying stream to be deleted

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt DeleteStream( TUint32 aSessionId, TUint32 aLinkId, 

                                TUint32 aStreamId  );

    /**

    * Starts inactivity timer for a stream in a given session.

    * If RTP data is not received in given tive, inactivy

    * event is sent to client. In case of timeout, inactivity

    * timer is stopped. Client may restart the timer is needed.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId Stream ID identifying stream

    * @param aTimeoutTime timeout value in microseconds

    * @param aEndpointId ID identifying endpoint of the stream to be monitored.

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt StartInactivityTimer( TUint32 aSessionId,

                                        TUint32 aLinkId, TUint32 aStreamId,

                                        TUint32 aTimeoutTime, TUint32 aEndpointId = 0 );

    /**

    * Stops inactivity timer for a stream in a given session.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId Stream ID identifying stream

    * @param aEndpointId ID identifying endpoint of the stream where monitoring stopped.

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt StopInactivityTimer( TUint32 aSessionId, TUint32 aLinkId,

                                       TUint32 aStreamId, TUint32 aEndpointId = 0 );

    /**

    * Set remote IP address and port number for a given session.

    * @param aSessionId session ID

    * @param aLinkId link ID

    * @param aRemoteAddr Remote address to set

    * @param aRemoteRtcpPort Remote RTCP port to set, if not RTP port +1

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt SetRemoteAddress( TUint32 aSessionId, TUint32 aLinkId,

                                    const TInetAddr& aRemoteAddr, TUint aRemoteRtcpPort = 0 );

    /**

    * Gets current codec used in a given stream.

    * @param aSessionId session ID

    * @param aLinkId Link ID

    * @param aStreamId Stream ID

    * @return Current codec used with the specified stream, ownership is transferred.

    */

    IMPORT_C CMccCodecInformation* CodecL( TUint32 aSessionId,

                                           TUint32 aLinkId,

                                           TUint32 aStreamId );

    /**

    * Sets codec to be used in a given stream.

    * @param aSessionId session ID

    * @param aLinkId Link ID

    * @param aStreamId Stream ID

    * @param aCodec Codec to be used

    * @return One of the standard system-wide error codes.

    */

    IMPORT_C TInt SetCodec( TUint32 aSessionId, TUint32 aLinkId,

                            TUint32 aStreamId,

                            CMccCodecInformation& aCodecInformation );

    /**

    * Get supported codecs by the system. Certain sinks and sources

    * however may have limitations on which codecs they support, hence

    * all these codecs may not allowed in all streams.

    * @param aCodecs An array to be filled with FourCC codes

    * @return One of the standard system-wide error codes.

    */

    TInt GetSupportedCodecs( RArray<TFourCC>& aCodecs );

    /**

    * Returns array of supported codecs in the system with their default values.

    * Note that data that the aCapabilities contains before calling this function 

    * will be lost during the excecution of this function. Note also that the client

    * is responsible for the destruction of the objects contained in the

    * parameter array.

    * @param aCapabilities Codec capabilities

    * @return KErrNone if successful

    */

    IMPORT_C TInt GetCapabilities(

            RPointerArray<CMccCodecInformation>& aCapabilities ) const;

    /**

    * Returns array of supported codecs of specific sink or source. Note that data that

    * the aCapabilities contains before calling this function will be

    * lost during the excecution of this function. Note also that the client

    * is responsible for the destruction of the objects contained in the

    * parameter array.

    * @param aType, type identifier of source or sink

    * @param aStreamType type of the stream

    * @param aParam, source or sink specific param

    * @param aCapabilities Codec capabilities

    * @return KErrNone if successful

    */

    IMPORT_C TInt GetCapabilities( const TUid aType, TInt aStreamType, const TDesC8& aParam,

            RPointerArray<CMccCodecInformation>& aCapabilities );

    /**

    * Get Synchronization source identifier.

    * @param aSessionId session ID

    * @param aLinkId Link ID

    * @param aStreamId Stream ID

    * @param aEndpointId ID identifying endpoint of the stream.

    * @param aSSRC SSRC value

    * @return One of the standard system-wide error codes.

    */   

    IMPORT_C TInt GetSSRC ( TUint32 aSessionId,

                            TUint32 aLinkId,

                            TUint32 aStreamId,

                            TUint32 aEndpointId,

                            TUint32& aSSRC );

    /**

    * Sends media signal (e.g. DTMF,RTCP) to uplink if possible.

    * @param aEvent Event to be sent

    * @return void

    */

    IMPORT_C void SendMediaSignalL( const TMccEvent& aEvent );

    /**

    * Adds new sink to the session. User must later

    * call CreateStream to connect this sink to some stream.

    * @param aSinkType type identifier of the sink.

    * @param aParam initialization parameters of the sink.

    * @param aEndpointId idenfier of the created sink on return.

    * @return KErrNotFound, if sink type not found

    */

    IMPORT_C TInt AddDataSink( const TUid aSinkType, const TDesC8& aParam, 

                               TUint32& aEndpointId );

    /**

    * Adds new source to the session. User must later

    * call CreateStream to connect this source to some stream.

    * @param aSourceType type identifier of the source.

    * @param aParam initialization parameters of the source.

    * @param aEndpointId idenfier of the created source on return.

    * @return KErrNotFound, if source type not found

    */

    IMPORT_C TInt AddDataSource( const TUid aSourceType, const TDesC8& aParam,

                                 TUint32& aEndpointId );

    /**

    * Checks if link already exists based on local port

    * @param aSessionId session ID

    * @param aLinkId ID of the link

    * @param aNetSettings network settings for the link

    * @return ETrue if found; otherwise EFalse.

    */

    IMPORT_C TBool LinkExists( TUint32 aSessionId,

                               TUint32& aLinkId,

                               const TMccNetSettings& aNetSettings );

    /**

    * Checks if link contains streams

    * @param aSessionId session ID

    * @param aLinkId ID of the link

    * @return ETrue if found; otherwise EFalse.

    */

    IMPORT_C TBool StreamsExists( TUint32 aSessionId,

                                  TUint32 aLinkId );

    /** 

    * Gets sink or source parameter

    * @param aSessionId session where sink or source belongs to

    * @param aLinkId link ID where sink or source belongs to

    * @param aStreamId stream ID where sink or source belongs to

    * @param aEndpointId endpoint ID identifying sink or source.

    * @param aParam a parameter to get

    * @param aVal on return will contain parameter value in TPkgBuf structure

    * @return KErrNotFound if parameter was not found, KErrNone otherwise

    */

    IMPORT_C TInt GetParameter( TUint32 aSessionId, TUint32 aLinkId, 

                                TUint32 aStreamId, TUint32 aEndpointId,

                                TUint32 aParam, TDes8& aVal );

    /** 

    * Sets sink or source parameter

    * @param aSessionId session where sink or source belongs to

    * @param aLinkId link ID where sink or source belongs to

    * @param aStreamId stream ID where sink or source belongs to

    * @param aEndpointId endpoint ID identifying sink or source.

    * @param aParam a parameter to get

    * @param aVal on return will contain parameter value in TPkgBuf structure

    * @return KErrNotFound if parameter was not found, KErrNone otherwise

    */

    IMPORT_C TInt SetParameter( TUint32 aSessionId, TUint32 aLinkId, 

                                TUint32 aStreamId, TUint32 aEndpointId,

                                TUint32 aParam, const TDesC8& aVal );

    /**

    * Updates sink of the stream.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be updated

    * @param aEndpointId ID identifying endpoint of the stream to be updated.

    * @param aParam initialization parameters of the sink.

    * @return KErrNotFound, if sink type not found

    */

    IMPORT_C TInt UpdateDataSink( TUint32 aSessionId, TUint32 aLinkId, 

                               TUint32 aStreamId, TUint32 aEndpointId,

                               const TDesC8& aParam );

    /**

    * Updates source of the stream. 

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be updated

    * @param aEndpointId ID identifying endpoint of the stream to be updated.

    * @param aParam initialization parameters of the source.

    * @return KErrNotFound, if source type not found

    */

    IMPORT_C TInt UpdateDataSource( TUint32 aSessionId, TUint32 aLinkId, 

                                 TUint32 aStreamId, TUint32 aEndpointId,

                                 const TDesC8& aParam );

    /**

    * Removes sink from MCC.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be updated

    * @param aEndpointId ID identifying endpoint of the stream to be updated.

    * @return KErrNotFound, if sink type not found

    */

    IMPORT_C TInt RemoveDataSink( TUint32 aSessionId, TUint32 aLinkId, 

                                  TUint32 aStreamId, TUint32 aEndpointId );

    /**

    * Removes source from MCC. 

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be updated

    * @param aEndpointId ID identifying endpoint of the stream to be updated.

    * @return KErrNotFound, if source type not found

    */

    IMPORT_C TInt RemoveDataSource( TUint32 aSessionId, TUint32 aLinkId, 

                                    TUint32 aStreamId, TUint32 aEndpointId );

    /**

    * Reuses sink or source of the stream. Reused sink or source may be

    * simultaneously shared by two or more stream. It is also possible,that only one stream 

    * can use it at a time. User must later call CreateStream to connect this sink or source

    * to some stream.

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be updated

    * @param aEndpointId ID identifying endpoint of the stream to be reused.

    * @return KErrNotFound, if endpoint not found

    */

    IMPORT_C TInt Reuse( TUint32 aSessionId, TUint32 aLinkId, 

                         TUint32 aStreamId, TUint32 aEndpointId );

    /**

    * Get the reference count of given sink or source. 

    * @param aSessionId session where stream belongs to

    * @param aLinkId link ID

    * @param aStreamId ID identifying stream to be updated

    * @param aEndpointId ID identifying endpoint of the stream to be updated.

    * @param aCount number of references using this sink or source.

    * @return KErrNotFound, if endpoint not found

    */

    IMPORT_C TInt ReferenceCount( TUint32 aSessionId, TUint32 aLinkId, 

                                  TUint32 aStreamId, TUint32 aEndpointId,

                                  TUint& aCount );

    /**

    * Get the reference count of given sink or source. 

    * @param aSessionId session where stream belongs to

    * @param aBundle new bundle to be added in the session.

    * @param aBundleId identifier of the added bundle on return.

    * @return KErrNone if successful

    */

    IMPORT_C TInt AddBundle( TUint32 aSessionId, TMccStreamBundle& aBundle, TUint32& aBundleId );

    /**

    * Get the reference count of given sink or source. 

    * @param aSessionId session where stream belongs to

    * @param aBundleId identifier of the removed bundle.

    * @return KErrNotFound, if bundle not found

    */

    IMPORT_C TInt RemoveBundle( TUint32 aSessionId, TUint32 aBundleId );

    /**

    * Get the reference count of given sink or source. 

    * @param aSessionId session where stream belongs to

    * @param aBundles an array of bundles in given session.

    * @return KErrNone if successful

    */

    IMPORT_C TInt GetBundles( TUint32 aSessionId, RArray<TMccStreamBundle>& aBundles);

    /**

    * Transcodes media file in non-realtime. Progress of transcoding

    * can be monitored through MMccCtrlObserver::MccEventReceived.

    * @param aSourceFile source file for transcoding

    * @param aDestFile destination file for transcoding

    * @param aQuality requested quality for transcoding

    * @param aSessionId session identifier for transcoding

    * @param aVideoCodec requested video parameters for transcoding, overrides aQuality parameter.

    *         Ownership is not transferred.    

    * @param aAudioCodec requested audio parameters for transcoding, overrides aQuality parameter.

    *         Ownership is not transferred.    

    * @return ETrue if succesfull; otherwise EFalse.

    */

    IMPORT_C TInt TranscodeFile( const TDesC8& aSourceFile, const TDesC8& aDestFile,

                                 TUint32 aQuality, TUint32& aSessionId,  

                                 const CMccCodecInformation* aVideoCodec = 0,

                                 const CMccCodecInformation* aAudioCodec = 0 );