/*

 * Copyright (c) 2009 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:

 * CEDIDHandler class declaration.

 *

 */

#ifndef C_EDIDHANDLER_H

#define C_EDIDHANDLER_H

// INCLUDES

#include <e32base.h>

#include <ddc_access.h>

#include <tvoutconfig.h>

#include <accpolhdmiaudioformat.h>

#include <accpolhdmivideoformat.h>

#include <accpolhdmilatency.h>

#include <tvoutconfigdef.h>

#include "ediddatatypes.h"

#include "videotimings.h"

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CDdcPortAccess;

class MFSMForBody;

class CEdidParserBase;

class CCea861EdidParser;

class CTVOutConfigForHDMI;

class CAccPolHdmiSink;

class CAccPolHdmiLatency;

class CAccPolHdmiSpeakerAllocation;

// CLASS DECLARATION

/**

 *  Class to handle EDID data.

 *

 *  @code

 *   ?good_class_usage_example(s)

 *  @endcode

 *

 *  @lib none.

 *  @since TB 9.2

 */

NONSHARABLE_CLASS( CEDIDHandler ): public CActive

    {

public:

    // Request Identifier

    enum TRequestTypeID

        {

        EUndefRequest = 0x0,

        EDdcReadRequest,

        ERetryTimerRequest,

        };

    // Constructors and destructor

    /**

     * Symbian two phased constructor.

     * 

     * @since S60 TB9.2

     * @param aFSM A FSM.

     * @param CTVOutConfigForHDMI TV Out Configurer.

     * @return CEDIDHandler*

     */

    static CEDIDHandler* NewL( MFSMForBody& aFSM,

        CTVOutConfigForHDMI& aTVOutConfigForHDMI );

    /**

     * Destructor.

     */

    virtual ~CEDIDHandler();

public:

    // New methods

    /**

     * Fetch EDID Data.

     * 

     * @since TB9.2

     * @param None.

     * @return Error code, KErrNone if successfull.

     */

    TInt FetchEDIDData();

    /**

     * Set video parameters of TV Out Configuration.

     * 

     * @since TB9.2

     * @param None.

     * @return Error code, KErrNone if successfull.

     */

    TInt SetVideoParameters();

    /**

     * Reset EDID Data.

     * 

     * @since TB9.2

     * @param None.

     * @return void.

     */

    void ResetData();

    /**

     * Create HDMI Sink object.

     * 

     * @since TB9.2

     * @param None.

     * @return CAccPolHdmiSink* HDMI sink object.

     */

    CAccPolHdmiSink* CreateHdmiSinkL();

    /**

     * Create HDMI Video Format object.

     * 

     * @since TB9.2

     * @param aHdmiVideoFormatArray Array of CAccPolHdmiVideoFormat pointers.

     * @return void.

     */

    void CreateHdmiVideoFormatL( RAccPolHdmiVideoFormatArray& aHdmiVideoFormatArray );

    /**

     * Create HDMI Latency object.

     * 

     * @since TB9.2

     * @param aHdmiLatencyArray Array of CAccPolHdmiLatency pointers.

     * @return None.

     */

    void CreateHdmiLatencyL( RAccPolHdmiLatencyArray& aHdmiLatencyArray );

    /**

     * Create HDMI Audio Format object.

     * 

     * @since TB9.2

     * @param aHdmiAudioFormatArray Array of CAccPolHdmiAudioFormat pointers.

     * @return void.

     */

    void CreateHdmiAudioFormatL( RAccPolHdmiAudioFormatArray& aHdmiAudioFormatArray );

    /**

     * Create HDMI Speaker Allocation object.

     * 

     * @since TB9.2

     * @param None.

     * @return CAccPolHdmiSpeakerAllocation* HDMI Speaker Allocation object.

     */

    CAccPolHdmiSpeakerAllocation* CreateHdmiSpeakerAllocationL();

    /**

     * Tells whether or not HDCP is supported at the moment.

     * 

     * @since TB9.2

     * @param None.

     * @return TBool Symbian error code. KErrNone, if ok. KErrNotFound if cannot be defined.

     */

    TInt GetHdcpSupportStatus( TBool& aHdcpSupport ) const;

    /**

     * Update overscan values from cenrep.

     * 

     * @param None.

     * @return None.

     */

	void GetCurrentOverscanValue( TInt& aHOverscan, TInt& aVOverscan );

private:

    /**

     * Read EDID Data from DDC Access.

     * 

     * @since TB9.2

     * @param None.

     * @return Error code. KErrNone if successful.

     */

    TInt ReadEDIDDataL();

    // Functions from base class CActive

    /**

     * RunL()

     */

    void RunL();

    /**

     * DoCancel()

     */

    void DoCancel();

    /**

     * RunError()

     */

    TInt RunError( TInt aError );

private:

    // Constructors

    /**

     * C++ constructor.

     * @param aFSM A FSM.

     * @param CTVOutConfigForHDMI TV Out Configurer.

     */

    CEDIDHandler( MFSMForBody& aFSM,

            CTVOutConfigForHDMI& aTVOutConfigForHDMI );

    /**

     * Symbian 2nd phase constructor.

     * 

     */

    void ConstructL();

private:

    /**

     * Fills the common timing attributes which can be received from

     * edidparser or cenrep.

     * 

     * @param aTimings Timings struct which is filled.

     * @return None.

     */

    void FillCommonHdmiDviTimings( THdmiDviTimings& aTimings ) const;

    /**

     * Fills out the THdmiDviTimings based on the timing item.

     * 

     * @param aItem Timing item from which the data is used.

     * @param aTimings Timings struct which is filled.

     * @return None.

     */

    void FillHdmiDviTimings( const TTimingItem& aItem,

        THdmiDviTimings& aTimings ) const;

    /**

     * Fills out the THdmiDviTimings based on the descriptor block.

     * 

     * @param aDescBlock Descriptor block.

     * @param aTimings Timings struct which is filled.

     * @return None.

     */

    void FillHdmiDviTimings( const TEdidDescriptorBlock& aDescBlock,

        THdmiDviTimings& aTimings ) const;

    /**

     * Set cea modes.

     * 

     * @param aTimings Array to fill.

     * @return system error code.

     */

    TInt SetCeaModes( RArray<THdmiDviTimings>& aTimings ) const;

    /**

     * Set dmt modes.

     * 

     * @param aTimings Array to fill.

     * @return system error code.

     */

    TInt SetDmtModes( RArray<THdmiDviTimings>& aTimings ) const;

    /**

     * Set dmt modes from established timings 1 and 2.

     * 

     * @param aTimings Array to fill.

     * @return system error code.

     */

    TInt SetDmtModesFromEstablishedTimings( RArray<THdmiDviTimings>& aTimings ) const;

    /**

     * Set dmt modes from standard timings.

     * 

     * @param aTimings Array to fill.

     * @return None.

     */

    TInt SetDmtModesFromStandardTimings( RArray<THdmiDviTimings>& aTimings ) const;

    /**

     * Set dmt modes from timing descriptors.

     * 

     * @param aTimings Array to fill.

     * @return None.

     */

    TInt SetDmtModesFromTimingDescriptors( RArray<THdmiDviTimings>& aTimings ) const;

    /**

     * Get timing by index.

     * 

     * @param aIndex Indes of the item to get

     * @param aType Timing type: CEA or DMT.

     * @return const TTimingItem*

     */

    const TTimingItem* TimingByIndex( TInt aIndex,

        TTimingModeType aType ) const;

    /**

     * Get timing by resolution.

     * 

     * @param aWidth Horizontal size.

     * @param aHeight Vertical size.

     * @param 

     * @param aType Timing type: CEA or DMT.

     * @return const TTimingItem*

     */

    const TTimingItem* TimingByResolution( TUint16 aWidth,

        TUint16 aHeight,

        TUint16 aRefreshRate,

        TTimingModeType aType ) const;

    /**

     * Set DMT mode by resolution.

     * 

     * @param aTimings Array where to append new DMT timing.

     * @param aWidth Width of the resolution. 

     * @param aHeight Height of the resolution.

     * @param aRefreshRate Refresh rate used.

     * @return None.

     */

    TInt SetDmtModeByResolution( RArray<THdmiDviTimings>& aTimings,

        TUint16 aWidth,

        TUint16 aHeight,

        TUint16 aRefreshRate ) const;

    /**

     * Resolves aspect ratio from width and height.

     * 

     * @param aWidth Horizontal pixels.

     * @param aHeight Vertical lines.

     * @return TTvSettings::TAspectRatio.

     */

    TTvSettings::TAspectRatio ResolveAspectRatio( TUint16 aWidth,

        TUint16 aHeight ) const;

    /**

     * Calculates overscan in pixels. The top left and right bottom should

     * cover the full screen from which the overscan is calculated.

     * 

     * @param aTLCorner Top left corner.

     * @param aRBCorner Right bottom corner.

     * @return None.

     */

    void CalculateOverscan( TPoint& aTLCorner, TPoint& aBRCorner ) const;

	/**

	 * Filter out the unsupported TV configurations.

	 * 

	 * @param  aHdmiConfigs    Available HDMI/DVI Tv configurations.

	 * @return KErrNone if OK. KErrNotFound if the filtered list is empty.

	 *			 

	 */

	TInt FilterAvailableTvConfigList( RArray<THdmiDviTimings>& aHdmiConfigs );

private: // Data

    class TDataBlock

        {

    public:

        TUint8 iDataBlock[KSizeOfSegment];

        };

    // Display Data Channel

    // Own.

    CDdcPortAccess* iDdcPortAccess;

    // A FSM pointer.

    // Not own.

    MFSMForBody& iFSM;

    // CEdidParserBase is the base class for parsing EDID data

    // Own.

    CEdidParserBase* iEdidParserPtr;

    // CCea861EdidParser is the base class for parsing 

    // CEA 861 EDID extension data

    // Own.

    CCea861EdidParser* iExtensionParserPtr;

    // EDID Data Block pointer.

    // Own

    TDataBlock* iDataBlockPtr;

    // TV Out Configurer.

    // Not own.

    CTVOutConfigForHDMI& iTVOutConfigForHDMI;

    // Horizontal overscan in pixels (1% == 100)

    TInt iHOverscan;

    // Vertical overscan in pixels (1% == 100)

    TInt iVOverscan;

    // Timer for reading EDID data

    RTimer iRetryTimer;

    // Retry Counter

    TInt iRetryCounter;

    // Request ID

    TRequestTypeID iRequestID;

	// Number of extensions to read

	TInt inbrOfExtensions;

	// Current EDID block

	TInt iCurrentBlock;

    };

#endif // C_EDIDHANDLER_H