/*

* 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:  

*

*/

#include <e32std.h>

#include <es_sock.h>

#include <e32math.h>

#include "mccfilevideo.h"

#include "mmcccodecinformation.h"

#include "mccperiodicrunner.h"

#include "mccfilesourcelogs.h"

#include "mccfilesourceimpl.h"

#include "mccinternaldef.h"

#include "mccresources.h"

const TUint32 KMccFileSourceParameterSetsIntervalInMicroSeconds = 2000000;

// -----------------------------------------------------------------------------

// CMccFileVideo::NewL

// -----------------------------------------------------------------------------

//

CMccFileVideo* CMccFileVideo::NewL( 

    CMccFileSourceImpl& aSource, 

    MMccResources* aMccResources,

    TUint32 aEndpointId )

	{

	CMccFileVideo* self = 

        new (ELeave) CMccFileVideo( aSource, aMccResources, aEndpointId );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

	return self;

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::ConstructL

// -----------------------------------------------------------------------------

//

void CMccFileVideo::ConstructL()

	{

	CMccFileSourceTypeBase::ConstructL();

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::CMccFileVideo

// -----------------------------------------------------------------------------

//

CMccFileVideo::CMccFileVideo( 

    CMccFileSourceImpl& aSource, MMccResources* aMccResources, TUint32 aEndpointId )

	: CMccFileSourceTypeBase ( aSource, KUidMediaTypeVideo ),

	  iMccResources( aMccResources ),

	  iEndpointId( aEndpointId ),

	  iBufferType ( CCMRMediaBuffer::EVideoH263 )

	{

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::~CMccFileVideo

// -----------------------------------------------------------------------------

//

CMccFileVideo::~CMccFileVideo()

	{

	delete iAVCNALUsBuffer;

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::FillBufferL

// -----------------------------------------------------------------------------

//

void CMccFileVideo::FillBufferL( 

    CMMFBuffer* aBuffer,

    MDataSink* aConsumer )

	{

	CMccFileSourceTypeBase::FillBufferL( aBuffer, aConsumer );

	// There might be pending video frames, read the oldest one immediately

	WriteBufferL();

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::ParseUpdateAudioDescriptions

// -----------------------------------------------------------------------------

//

TBool CMccFileVideo::ParseUpdateVideoDescriptions( MP4Handle aMP4Handle )

	{

	TBool containVideo = EFalse;

	mp4_u32 timeScale = 0;

	if ( MP4ParseRequestVideoDescription( aMP4Handle,

		 ( mp4_u32* ) &iLength,  &iFrameRate, ( mp4_u32* ) &iType,

	 	 ( mp4_u32* ) &iWidth,  ( mp4_u32* ) &iHeight,

         ( mp4_u32* ) &timeScale ) 

         == MP4_OK )

		{

		if ( iType == MP4_TYPE_H263_PROFILE_0 )

		    {

		    __FILESOURCE_CONTROLL( "CMccFileVideo::ParseUpdateVideoDescriptions \

MP4_TYPE_H263_PROFILE_0" )

		    iBufferType = CCMRMediaBuffer::EVideoH263;

		    containVideo = ETrue;

		    iFourCC = TFourCC( KMccFourCCIdH263 );

            TVideoClipProperties clipProperties;

        	MP4ParseGetVideoClipProperties( aMP4Handle, clipProperties );

        	iLevel = clipProperties.iH263Level;

		    }

		else if ( iType == MP4_TYPE_MPEG4_VIDEO )

		    {

		    __FILESOURCE_CONTROLL( "CMccFileVideo::ParseUpdateVideoDescriptions \

MP4_TYPE_MPEG4_VIDEO!" )

		    iBufferType = CCMRMediaBuffer::EVideoH263;

		    containVideo = ETrue;

		    iFourCC = TFourCC( KMccFourCCIdAVC );

		    }

		else if ( IsAVC() )

		    {

		    __FILESOURCE_CONTROLL( "CMccFileVideo::\

ParseUpdateVideoDescriptions AVC!" )

		    iBufferType = CCMRMediaBuffer::EVideoH263;

		    containVideo = ETrue;

		    iFourCC = TFourCC( KMccFourCCIdAVC );

		    iIsFirstFrame = ETrue;

		    iInsertParameterSets = ETrue;

		    }

		else if ( iType != MP4_TYPE_NONE )

		    {

		    __FILESOURCE_CONTROLL( "CMccFileVideo::\

ParseUpdateVideoDescriptions contains unsupported video" )

		    iFourCC = TFourCC( KMccFourCCUnsupported );

		    }

		else

		    {

		    // NOP

		    }

		}

	return containVideo;	

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::IsAVC

// -----------------------------------------------------------------------------

//

TBool CMccFileVideo::IsAVC()

	{

	if ( ( iType == MP4_TYPE_AVC_PROFILE_BASELINE ) ||

         ( iType == MP4_TYPE_AVC_PROFILE_MAIN )	 ||

         ( iType == MP4_TYPE_AVC_PROFILE_EXTENDED )

       )

	    {

	   	return ETrue;

	    }

    return EFalse;	

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::DoSetPositionL

// -----------------------------------------------------------------------------

//

void CMccFileVideo::DoSetPositionL( TUint32 aPosition )

	{

	__FILESOURCE_CONTROLL( "CMccFileVideo::DoSetPositionL" )

    __ASSERT_ALWAYS( aPosition <= iLength, User::Leave( KErrArgument ) );

    mp4_u32 audioPos = 0;

    // if retrun value is MP4_OK, iPosition is updated

    if ( MP4ParseSeek( iMP4Handle, ( mp4_u32 ) aPosition,

         ( mp4_u32* )&audioPos, ( mp4_u32* ) &iPosition, MP4TRUE )

        != MP4_OK )

	    {

	   	User::Leave( KErrGeneral );

	    }

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::Type

// -----------------------------------------------------------------------------

//

CCMRMediaBuffer::TBufferType CMccFileVideo::Type()

	{

	return iBufferType;	

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::GetFourCC

// -----------------------------------------------------------------------------

//

TFourCC CMccFileVideo::GetFourCC()

	{

	return iFourCC;

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::TickCallBack

// -----------------------------------------------------------------------------

//

TCallBack CMccFileVideo::TickCallBack()

    {

    return TCallBack( TickVideoL, this );

    }

// -----------------------------------------------------------------------------

// CMccFileVideo::GetConfigKeyL

// -----------------------------------------------------------------------------

//

HBufC8* CMccFileVideo::GetConfigKeyL()

    {

    __ASSERT_ALWAYS( IsAVC(), User::Leave( KErrNotSupported ) );

    HBufC8* configKey = NULL;

    ExtractH264ParameterSetNALUsL( &configKey, ETrue );

    return configKey;

    }

// -----------------------------------------------------------------------------

// CMccFileVideo::Position

// -----------------------------------------------------------------------------

//

TUint32 CMccFileVideo::Position()

	{

	return iPosition;

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::DurationL

// -----------------------------------------------------------------------------

//

TUint32 CMccFileVideo::Duration()

	{

	return iLength;	

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::AudioBitRateL

// -----------------------------------------------------------------------------

//

TUint32 CMccFileVideo::AudioBitRate()

	{

    return 0;

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::VideoFrameSizeL

// -----------------------------------------------------------------------------

//

TSize CMccFileVideo::VideoFrameSize()

	{

	TSize size;

	size.iWidth = iWidth;

	size. iHeight = iHeight;

	return size;	

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::VideoFrameRateL

// -----------------------------------------------------------------------------

//

TReal CMccFileVideo::VideoFrameRateL()

	{

	// Round to have zero decimals for clearness sake

	TReal roundedFrameRate;

	User::LeaveIfError( Math::Round( roundedFrameRate, iFrameRate, 0 ) );

    return roundedFrameRate;	

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::StartTimerL

// -----------------------------------------------------------------------------

//                     

void CMccFileVideo::StartTimerL()        

	{

	__FILESOURCE_CONTROLL( "CMccFileVideo::StartTimerL" )

	if ( IsPaused() )

	    {

	    SetPaused( EFalse );

	    SetPositionL( iPosition, ETrue );

	    }

	else

	    {

	    SetStartTime();

	    }

	const TReal KMccSecondInMicroSeconds = 1000000;

	TInt tickIntervalVideo = (TInt)KMccSecondInMicroSeconds;

    if ( iFrameRate != 0 )

        {

        // Set interval for video

        tickIntervalVideo = (TInt)( KMccSecondInMicroSeconds / iFrameRate ); 

        // Increase tick rate 22%

        const TReal KMccTickModifier = 0.78;

        tickIntervalVideo =(TInt) (tickIntervalVideo * KMccTickModifier);

        }

	__FILESOURCE_CONTROLL_INT1( "CMccFileVideo::StartTimer (timer):", 

                                tickIntervalVideo )

    iTimerInterval = tickIntervalVideo;

    iCorrectionInterval = iTimerInterval;

	iPeriodicRunner->Start( tickIntervalVideo, TCallBack( TickVideoL, this ));	

	__FILESOURCE_CONTROLL( "CMccFileVideo::StartTimerL, exit" )

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::TickVideoL

// -----------------------------------------------------------------------------

//

TInt CMccFileVideo::TickVideoL( TAny* aObject )

	{

	__FILESOURCE_CONTROLL( "CMccFileVideo::TickVideoL" )

	static_cast<CMccFileVideo*>(aObject)->ReadFrameL();

	return KErrNone;

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::ReadFrameL

// -----------------------------------------------------------------------------

// 

void CMccFileVideo::ReadFrameL()

	{

	__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL" )

    MP4Err retval = MP4ParseIsFrameAvailable( iMP4Handle, iType );

  	if (  retval != MP4_OK )

	  	{

	    __FILESOURCE_CONTROLL_INT1( "CMccFileVideo::ReadFrameL, no video", retval )

		SetPaused( ETrue );

		TRAPD( positionErr, SetPositionL( 0 ) );

		iSource.PauseVideoL( positionErr );	

        return;

	  	}

    // Read the size of next video frame

  	__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, reading frame" ) 

    if ( MP4ParseNextFrameSize( iMP4Handle, iType,

        ( mp4_u32* ) &iBufferSize ) != MP4_OK )

	    {

	    __FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, \

MP4ParseNextFrameSize not Ok" ) 

        return;

	    }

    TInt aVCNALUsBufferLen = 0;

    if ( IsAVC() && iIsFirstFrame )

    	{

    	delete iAVCNALUsBuffer;

	    iAVCNALUsBuffer = NULL;	

    	ExtractH264ParameterSetNALUsL( &iAVCNALUsBuffer );

    	if( iAVCNALUsBuffer )

	    	{

	    	aVCNALUsBufferLen += iAVCNALUsBuffer->Length();	

	    	}

    	iIsFirstFrame = EFalse;

    	}

    // Allocate a buffer big enough for the next video frame

  	__FILESOURCE_CONTROLL_INT1( "CMccFileVideo::ReadFrameL, reading frame, size", iBufferSize )

    HBufC8* mediaBuffer = HBufC8::NewLC( iBufferSize + aVCNALUsBufferLen );

    TPtr8 mediaSinkBuffer = mediaBuffer->Des();

    mediaSinkBuffer.SetLength( iBufferSize + aVCNALUsBufferLen );

    TUint8* ptrMediaBuffer = CONST_CAST(TUint8*, mediaBuffer->Ptr());

    TBool keyFrame = EFalse;

    TUint32 oldPosition = iPosition;

    if ( MP4ParseReadVideoFrame( iMP4Handle,

        ( mp4_u8* ) ptrMediaBuffer, ( mp4_u32 ) iBufferSize,

        ( mp4_u32* ) &iFrameSize, ( mp4_u32* ) &iPosition,

        ( mp4_bool* ) &keyFrame, NULL ) != MP4_OK )

		{

		__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, reading frame, NOT OK" )

		CleanupStack::PopAndDestroy( mediaBuffer );

        }

    else

    	{

 		__FILESOURCE_CONTROLL_INT1( "CMccFileVideo::ReadFrameL, reading frame, OK, position", 

 		                            iPosition )   		

        DoTimingCorrection( iPosition );

        // Update read interval (how much position changes on each frame read)

        iReadInterval = iPosition - oldPosition;

        if ( IsAVC() )

	        {

	        MarkWithNALUDelimiters( iBufferSize, mediaSinkBuffer );

	    	}

        TTimeIntervalMicroSeconds timeStamp = GetTimeStamp();

        CMccFrameItem* item = new (ELeave) CMccFrameItem();

        item->iFrame = mediaBuffer;

        CleanupStack::Pop( mediaBuffer );

        CleanupStack::PushL( item );

        item->iTimeStamp = timeStamp;

        item->iKeyFrame = keyFrame;

        iFrames.AppendL( item );

        CleanupStack::Pop( item );

        WriteBufferL();

		}

    __FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, Time Check 2" )    		

  	__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, \

writing buffer to sink complete" ) 		

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::MarkWithNALUDelimiters()

// -----------------------------------------------------------------------------

//

void CMccFileVideo::MarkWithNALUDelimiters( 

	const TInt aAccessUnitSize, TDes8& aBuffer )

	{

    __FILESOURCE_CONTROLL( "CMccFileVideo::MarkWithNALUDelimiters" )

    TUint8* ptrByte = NULL;

    TInt indx = 0;

    TUint32 size;

    const TUint32 size_field_len = 4;

    do

	    {

    	ptrByte = const_cast<TUint8*> ( aBuffer.Mid( indx ).Ptr() );	// get starting point of NALU size

    	size = BigEndian::Get32(ptrByte);	// get NALU size

    	aBuffer[indx+0] = 0x00;

    	aBuffer[indx+1] = 0x00;

    	aBuffer[indx+2] = 0x00;

    	aBuffer[indx+3] = 0x01;

    	indx = indx + size + size_field_len;

	    }while(indx < aAccessUnitSize);

	}

// -----------------------------------------------------------------------------

// CMccFileVideo::ExtractH264ParameterSetNALUsL()

// -----------------------------------------------------------------------------

//

void CMccFileVideo::ExtractH264ParameterSetNALUsL( 

    HBufC8** aBufferOut, 

    TBool aSdpFormat )

	{

	__FILESOURCE_CONTROLL( "CMccFileVideo::ExtractH264ParameterSetNALUsL" )

	*aBufferOut = NULL;

	HBufC8* buffer = NULL;

	HBufC8* bufferOut = NULL;

	TUint32 decspecinfosize;

	TUint8* ptrByte;

	// Query for size, buffer too small error is ok as we give zero length buffer

	MP4Err retval = MP4ParseReadVideoDecoderSpecificInfo( 

	    iMP4Handle, ( mp4_u8* ) NULL, 0, ( mp4_u32* ) &decspecinfosize );

	if ( retval != MP4_OK && retval != MP4_BUFFER_TOO_SMALL )

		{

		User::Leave(KErrGeneral);

		}

	buffer = HBufC8::NewLC(decspecinfosize);

	ptrByte = const_cast<TUint8*> ( buffer->Des().Ptr() );

	if( MP4ParseReadVideoDecoderSpecificInfo( iMP4Handle,

											  ( mp4_u8* ) ptrByte,

											  ( mp4_u32 ) buffer->Des().MaxSize(),

											  ( mp4_u32* ) &decspecinfosize

											 ) != MP4_OK )

		{

		User::Leave(KErrGeneral);

		}

	else

		{

		buffer->Des().SetLength( decspecinfosize );

		}