/*

* 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 configuring media codecs.

*

*/

#ifndef MMCCCODECINFORMATION_H

#define MMCCCODECINFORMATION_H

// INCLUDES

#include <e32base.h>

#include <e32des8.h>

#include <e32svr.h>

#include <mmf/common/mmfcontroller.h>

// FORWARD DECLARATIONS

class TMccCodecInfo;

// CONSTANTS

// Codec names used in SDP messages

_LIT8( KPCMUSdpName, "PCMU" );

_LIT8( KPCMASdpName, "PCMA" );

_LIT8( KAMRSdpName, "AMR" );

_LIT8( KAMRWbSdpName, "AMR-WB" );

_LIT8( KILBCSdpName, "iLBC" );

_LIT8( KG729SdpName, "G729" );

_LIT8( KTelephoneEvent, "telephone-event" );

_LIT8( KRedSdpName, "red" );

_LIT8( KCnSdpName, "CN" );

_LIT8( KH263SdpName, "H263" );

_LIT8( KH2631998SdpName, "H263-1998" );

_LIT8( KH2632000SdpName, "H263-2000" );

_LIT8( KAVCSdpName, "H264" );

_LIT8( KAACSdpName, "AAC" );

_LIT8( KIlbcFmtp, "mode=" );

_LIT8( KSemicolonSpace, "; " );

_LIT8( KCommaSign, "," );

const TInt KPTimeFactor = 1000;

// Maximum buffer length for SDP names

const TInt KMaxSdpNameLength = 20;

const TUint8 KMaxPacketrate = 10;

const TInt KMaxFmtpLen( 120 ); // Change if this gets too small

const TInt KMaxKeepAliveDataLen( 161 );

// Dynamic payload type limits, see RFC 3551

const TUint8 KMaxPayloadType = 127;

const TUint8 KMinDynamicPT = 96;

const TUint8 KPayloadTypeUndefined = 128;

// Default payload types for codecs that use dynamic payload types

const TUint8 KDefaultAmrNbPT = 96;

const TUint8 KDefaultIlbcPT = 97;

const TUint8 KDefaultDtmfPT = 98;

const TUint8 KDefaultRedPT = 99;

const TUint8 KDefaultAmrWbPT = 100;

// Static payload types, see RFC 3551

const TUint8 KPcmuPayloadType = 0;

const TUint8 KPcmaPayloadType = 8;

const TUint8 KG729PayloadType = 18;

const TUint8 KCnPayloadType = 13;

const TUint8 KCnPayloadTypeReserved = 19;

// Packet length constants, in milliseconds

const TUint KMinPtime = 10;

const TUint KDefaultPtime = 20;

const TUint KMaxPtime = 200;

// Max gen red count

const TUint KMaxGenRedCount = 1;

// Max config key length

const TInt KMaxConfigKeyLen = 100;

// FourCC values for different codecs supported by MCC

// (' ', 'A', 'M', 'R')

const TUint32 KMccFourCCIdAMRNB = 0x524d4120;

// (' ', 'A', 'W', 'B')

const TUint32 KMccFourCCIdAMRWB = 0x42574120;

// ('G', '7', '1', '1')

const TUint32 KMccFourCCIdG711 = 0x31313747;

// ('G', '7', '2', '9')

const TUint32 KMccFourCCIdG729 = 0x39323747;

// ('i', 'L', 'B', 'C')

const TUint32 KMccFourCCIdILBC = 0x43424c49;

// ( 'D', 'T', 'M', 'F' )

const TUint32 KMccFourCCIdDTMF = 0x464d5444;

// ( 'H', '2', '6', '3' )

const TUint32 KMccFourCCIdH263 = 0x461A1B1C;

// ( 'H', '2', '6', '4' )

const TUint32 KMccFourCCIdAVC = 0x461A1BDD;

// Red - not official

const TUint32 KMccFourCCIdRed = 0x4DDDDDDD;

// Comfort noise - not official

const TUint32 KMccFourCCIdCN = 0x4DDDDDDE;

// DATA TYPES

/**

* Codec mode

*/

typedef TUint TCodecMode;

const TUint ENothing = 1;

const TUint EPCMU = 2;

const TUint EPCMA = 3;

const TUint EBandwidthEfficient = 4;

const TUint EOctetAligned = 5;

const TUint EDTMFModeEvent = 6;

const TUint EDTMFModeInband = 7;

const TUint EDTMFModeTone = 8;

const TUint EDTMFModeRedEvents = 9;

/**

* Algorithm used

*/      

typedef TUint TAlgoUsed;

const TUint ENoAlgoUsed = 1;  

const TUint EGenRedUsed = 2;

const TUint EAmrFecUsed = 3; 

// FUNCTION PROTOTYPES

// CLASS DECLARATION

/**

*  Container class for the codec information.

*

*  @lib mmccinterface.dll

*/

class CMccCodecInformation : public CBase

{

public:  // Constructors and destructor

    /**

    * Destructor.

    */

    virtual ~CMccCodecInformation();

protected:  // New functions

    /**

    * C++ default constructor.

    */

    CMccCodecInformation();

public: // New functions

    /**

    * Constructs a clone from this codec object. Note that the clone falls

    * back to given codec's default settings.

    * @return CMccCodecInformation Pointer to the newly created codec clone

    */

    virtual CMccCodecInformation* CloneDefaultsL() = 0;

    /**

    * Constructs a clone from this codec object and copies the original 

    * object's current settings to the newly created clone.

    * @return CMccCodecInformation Pointer to the newly created codec clone

    */

    virtual CMccCodecInformation* CloneDetailedL() = 0;

    /**

    * Checks the codec values if signalling is needed.

    * @param aCandidate new codec to be checked

    * @return ETrue if signalling is needed

    */

    virtual TBool RequireSignalling( const CMccCodecInformation& aCandidate ) const;      

public: // sets

    virtual void SetValues( TMccCodecInfo codecInfo );

    virtual void GetValues( TMccCodecInfo& codecInfo ) const;

    /**

    * Type of the codec, like KUidMediaTypeAudio or KUidMediaTypeVideo.

    * @return type of the codec.

    */

    virtual TUid Type() const;

    /**

    * Enable / Disable Voice Activity Detection.

    * @param aEnableVAD Boolean indicating whether to enable

    *     Voice Activity Detection

    * @return KErrNotSupported if codec doesn't support VAD; otherwise KErrNone.

    */

    virtual TInt EnableVAD( TBool aEnableVAD ) = 0;

    /**

    * Sets bitrate used with codec.

    * @param aBitrate New bitrate value

    * @return KErrNotSupported if codec doesn't support bitrate value

    *     issued; otherwise KErrNone.

    */

    virtual TInt SetBitrate( TUint aBitrate ) = 0;

    /**

    * Sets the sampling frequency.

    * @param aSamplingFreq Sampling frequency to be used

    * @return KErrNotSupported if codec doesn't support sampling frequency

    *     issued; otherwise KErrNone.

    */

    virtual TInt SetSamplingFreq( TUint32 aSamplingFreq ) = 0;

    /**

    * Sets the sdp name of the codec.

    * @param aSdpName sdp name of the codec.

    * @return KErrNotSupported if not allowed; otherwise KErrNone.

    */

    virtual TInt SetSdpName( const TDesC8& aSdpName ) = 0;

    /**

    * Sets the payload type.

    * @param aPayloadType type identifier to be used for payload.

    * @return KErrNotSupported if not allowed; otherwise KErrNone.

    */

    virtual TInt SetPayloadType( TUint8 aPayloadType ) = 0;

    /**

    * Sets the codec mode.

    * @param aMode Codec mode, eg. ULAW/ALAW, bandwidth eff / octet aligned

    * @return KErrNotSupported if codec doesnt' support codec mode

    *     value issued; otherwise KErrNone.

    */

    virtual TInt SetCodecMode( TCodecMode aCodecMode ) = 0;

    /**

    * Sets the allowed bitrates for the codec.

    * @param aBitrateMask bitrate mask.

    * @return KErrNotSupported if codec doesnt' support the bitrate mask

    *     value issued; otherwise KErrNone.

    */

    virtual TInt SetAllowedBitrates( TUint aBitrateMask );

    /**

    * Sets the packet time

    * @param aPTime PacketTime.

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

    */

    virtual TInt SetPTime( TUint aPTime ) = 0;        

    /**

    * Sets max packet time

    * @param aMaxPTime Maximum PacketTime

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

    */

    virtual TInt SetMaxPTime( TUint aMaxPTime ) = 0; 

    /**

    * Set JitterBuffer Buffer length

    * @param aJitterBufBufferLength length for buffer

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

    */

    virtual TInt SetJitterBufBufferLength( TUint aJitterBufBufferLength );      

    /**

    * Set JitterBuffer threshold

    * @param aJitterBufThreshold threshold value for buffer before playout starts

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

    */

    virtual TInt SetJitterBufThreshold( TUint aJitterBufThreshold );      

    /**

    * Set JitterBuffer inactivity timeout in millisecounds

    * @param aJitterBufInactivityTimeOut timeout value for RTP inactivity

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

    */

    virtual TInt SetJitterBufInactivityTimeOut( TUint aJitterBufInactivityTimeOut );     

    /**

    * Sets max bitrate

    * @param aMaxBitrate Maximum bitrate

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

    */

    virtual TInt SetMaxBitrate( TUint aMaxBitrate ); 

    /**

    * Sets average bitrate

    * @param aAverageBitrate average bitrate

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

    */

    virtual TInt SetAverageBitrate( TUint aAverageBitrate ); 

    /**

    * Sets framerate

    * @param aFramerate frame rate

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

    */

    virtual TInt SetFramerate( TReal aFramerate ); 

    /**

    * Sets height of the frame

    * @param aFrameHeight height of the frame

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

    */

    virtual TInt SetFrameHeight( TUint aFrameHeight ); 

    /**

    * Sets width of the frame

    * @param aFrameWidth width of the frame

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

    */

    virtual TInt SetFrameWidth( TUint aFrameWidth ); 

    /**

    * Set algorithm.

    * @param aAlgo codec specific algorithm to be used

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

    */

    virtual TInt SetAlgo( TAlgoUsed aAlgo );

    /**

    * Set redundancy count.

    * @param aRedCount count for redundancy

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

    */

    virtual TInt SetRedCount( TUint aRedCount );

    /**

    * Set redundancy payload type.

    * @param aRedPT payload type for redundancy

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

    */

    virtual TInt SetRedundancyPT( TUint8 aRedPT );

    /**

    * Set priority for media resource.

    * @param aPriority priority for media resource

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

    */

    virtual void SetPriority( TInt aPriority );

    /**

    * Set priority preference for media resource.

    * @param aPreference priority preference for media resource

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

    */

    virtual void SetPriorityPreference(TInt aPreference );

    /**

    * Set keep alive packets send timer value.

    * @param aTimerValue timer value in seconds for keep alive packets

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

    */

    virtual TInt SetKeepAliveTimer( TUint8 aTimerValue );

    /**

    * Set keep alive packets payload type.

    * @param aKeepAlivePT payload type for keep alive packets

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

    */

    virtual TInt SetKeepAlivePT( TUint8 aKeepAlivePT );

    /**

    * Set keep alive packets payload data.

    * @param aData payload data for keep alive packets

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

    */

    virtual TInt SetKeepAliveData( const TDesC8& aData );

    /**

    * Enable / Disable Comfort noise generation.

    * @param aComfortNoisePT Payloadtype value indicating what

    *        payload type should be used for comfort noise.

    *        KPayloadTypeUndefined can be used to turn comfor noise

    *        generation off.

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

    */

    virtual TInt SetComfortNoiseGeneration( TUint8 aComfortNoisePT );

    /**

    * Set number of channels. Range between 1 to 8. Refer to RFC3551 4.1

    * for interpretation of channels value. Default value is 1.

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

    */

    virtual TInt SetChannels( TInt aNumOfChannels );

    /**

    * Sets the upper limit on the usage of redundancy in milliseconds.

    * @param    aMaxRed   maximum redundancy

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

    */

    virtual TInt SetMaxRed( TInt aMaxRed );

    /**

    * Set encoder/decoder configuration key

    * @param aConfigKey, config key as Base64 encoded

    */    

    virtual void SetConfigKeyL( const TDesC8& aConfigKey );

    /**

    * Sets preferred encoding device for uplink stream and preferred decoding

    * device for downlink stream.

    * @param aEncodingDecodingDevice

    */

    virtual void SetPreferredEncodingDecodingDevice( 

                                    TUid aEncodingDecodingDevice );

public: // get

    /**

    * Get VAD status.

    * @return Boolean indicating is VAD activated

    */

    virtual TBool VAD( ) const;

    /**

    * Gets bitrate value used currently.

    * @return Bitrate value

    */

    virtual TUint Bitrate( ) const;

    /**

    * Gets the bitrate mask 

    * @return Bitrate mask

    */

    virtual TUint AllowedBitrates() const;

    /**

    * Gets sampling frequency used currently.

    * @return Sampling frequency

    */

    virtual TUint32 SamplingFreq( ) const;

    /**

    * Gets the sdp name.

    * @return Sdp name used

    */

    virtual const TDesC8& SdpName() const;

    /**

    * Gets the payload type.

    * @return Payload type used

    */

    virtual TUint8 PayloadType( ) const;

    /**

    * Gets the codec mode

    * @return Codec mode used

    */

    virtual TCodecMode CodecMode( ) const;

    /**

    * Gets the packet time.

    * @return Packet Time.

    */

    virtual TInt PTime( ) const;        

    /**

    * Gets max packet time.

    * @return Max PacketTime.

    */

    virtual TInt MaxPTime( ) const;        

    /**

    * Gets the codec specific fmtp value for SDP.

    * @return Fmtp.

    */

    virtual TDesC8& GetFmtpL( );        

    /**

    * Codec FourCC.

    * @return FourCC.

    */        

    virtual TUint32 FourCC( ) const;

    /**

    * Get HW FrameTime.

    * @return FrameTime in milliseconds

    */

    virtual TInt FrameTime( ) const;

    /**

    * Get FrameSize.

    * @return FrameSize in bytes

    */

    virtual TInt FrameSize( ) const;

    /**

    * Get Algorithm used.

    * @return FrameSize in bytes

    */

    virtual TAlgoUsed Algo( ) const;       

    /**

    * Get Redundancy Count.

    * @return Redundancy Count

    */

    virtual TUint RedCount( ) const;    

    /**

    * Get Redundancy PayloadType.

    * @return Redundancy PayloadType

    */