multimediacommscontroller/mmccfilesourcesink/src/mccfilevideo.cpp
changeset 0 1bce908db942
child 18 91f50911ea81
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-1:000000000000 0:1bce908db942
       
     1 /*
       
     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 #include <e32std.h>
       
    22 #include <es_sock.h>
       
    23 #include <e32math.h>
       
    24 #include "mccfilevideo.h"
       
    25 #include "mmcccodecinformation.h"
       
    26 #include "mccperiodicrunner.h"
       
    27 #include "mccfilesourcelogs.h"
       
    28 #include "mccfilesourceimpl.h"
       
    29 #include "mccinternaldef.h"
       
    30 #include "mccresources.h"
       
    31 
       
    32 
       
    33 const TUint32 KMccFileSourceParameterSetsIntervalInMicroSeconds = 2000000;
       
    34 
       
    35 // -----------------------------------------------------------------------------
       
    36 // CMccFileVideo::NewL
       
    37 // -----------------------------------------------------------------------------
       
    38 //
       
    39 CMccFileVideo* CMccFileVideo::NewL( 
       
    40     CMccFileSourceImpl& aSource, 
       
    41     MMccResources* aMccResources,
       
    42     TUint32 aEndpointId )
       
    43 	{
       
    44 	CMccFileVideo* self = 
       
    45         new (ELeave) CMccFileVideo( aSource, aMccResources, aEndpointId );
       
    46     CleanupStack::PushL( self );
       
    47     self->ConstructL();
       
    48     CleanupStack::Pop( self );
       
    49     
       
    50 	return self;
       
    51 	}
       
    52 
       
    53 // -----------------------------------------------------------------------------
       
    54 // CMccFileVideo::ConstructL
       
    55 // -----------------------------------------------------------------------------
       
    56 //
       
    57 void CMccFileVideo::ConstructL()
       
    58 	{
       
    59 	CMccFileSourceTypeBase::ConstructL();
       
    60 	}
       
    61 
       
    62 // -----------------------------------------------------------------------------
       
    63 // CMccFileVideo::CMccFileVideo
       
    64 // -----------------------------------------------------------------------------
       
    65 //
       
    66 CMccFileVideo::CMccFileVideo( 
       
    67     CMccFileSourceImpl& aSource, MMccResources* aMccResources, TUint32 aEndpointId )
       
    68 	: CMccFileSourceTypeBase ( aSource, KUidMediaTypeVideo ),
       
    69 	  iMccResources( aMccResources ),
       
    70 	  iEndpointId( aEndpointId ),
       
    71 	  iBufferType ( CCMRMediaBuffer::EVideoH263 )
       
    72 	{
       
    73 	}
       
    74 
       
    75 // -----------------------------------------------------------------------------
       
    76 // CMccFileVideo::~CMccFileVideo
       
    77 // -----------------------------------------------------------------------------
       
    78 //
       
    79 CMccFileVideo::~CMccFileVideo()
       
    80 	{
       
    81 	delete iAVCNALUsBuffer;
       
    82 	}
       
    83 
       
    84 // -----------------------------------------------------------------------------
       
    85 // CMccFileVideo::FillBufferL
       
    86 // -----------------------------------------------------------------------------
       
    87 //
       
    88 void CMccFileVideo::FillBufferL( 
       
    89     CMMFBuffer* aBuffer,
       
    90     MDataSink* aConsumer )
       
    91 	{
       
    92 	CMccFileSourceTypeBase::FillBufferL( aBuffer, aConsumer );
       
    93 	
       
    94 	// There might be pending video frames, read the oldest one immediately
       
    95 	WriteBufferL();
       
    96 	}
       
    97 		
       
    98 // -----------------------------------------------------------------------------
       
    99 // CMccFileVideo::ParseUpdateAudioDescriptions
       
   100 // -----------------------------------------------------------------------------
       
   101 //
       
   102 TBool CMccFileVideo::ParseUpdateVideoDescriptions( MP4Handle aMP4Handle )
       
   103 	{
       
   104 	TBool containVideo = EFalse;
       
   105 	mp4_u32 timeScale = 0;
       
   106 	if ( MP4ParseRequestVideoDescription( aMP4Handle,
       
   107 		 ( mp4_u32* ) &iLength,  &iFrameRate, ( mp4_u32* ) &iType,
       
   108 	 	 ( mp4_u32* ) &iWidth,  ( mp4_u32* ) &iHeight,
       
   109          ( mp4_u32* ) &timeScale ) 
       
   110          == MP4_OK )
       
   111 		{
       
   112 		if ( iType == MP4_TYPE_H263_PROFILE_0 )
       
   113 		    {
       
   114 		    __FILESOURCE_CONTROLL( "CMccFileVideo::ParseUpdateVideoDescriptions \
       
   115 MP4_TYPE_H263_PROFILE_0" )
       
   116 
       
   117 		    iBufferType = CCMRMediaBuffer::EVideoH263;
       
   118 		    containVideo = ETrue;
       
   119 		    iFourCC = TFourCC( KMccFourCCIdH263 );
       
   120 
       
   121             TVideoClipProperties clipProperties;
       
   122         	MP4ParseGetVideoClipProperties( aMP4Handle, clipProperties );
       
   123         	iLevel = clipProperties.iH263Level;
       
   124 		    }
       
   125 		else if ( iType == MP4_TYPE_MPEG4_VIDEO )
       
   126 		    {
       
   127 		    __FILESOURCE_CONTROLL( "CMccFileVideo::ParseUpdateVideoDescriptions \
       
   128 MP4_TYPE_MPEG4_VIDEO!" )
       
   129 
       
   130 		    iBufferType = CCMRMediaBuffer::EVideoH263;
       
   131 		    containVideo = ETrue;
       
   132 		    iFourCC = TFourCC( KMccFourCCIdAVC );
       
   133 		    }
       
   134 		else if ( IsAVC() )
       
   135 		    {
       
   136 		    __FILESOURCE_CONTROLL( "CMccFileVideo::\
       
   137 ParseUpdateVideoDescriptions AVC!" )
       
   138 
       
   139 		    iBufferType = CCMRMediaBuffer::EVideoH263;
       
   140 		    containVideo = ETrue;
       
   141 		    iFourCC = TFourCC( KMccFourCCIdAVC );
       
   142 		    iIsFirstFrame = ETrue;
       
   143 		    iInsertParameterSets = ETrue;
       
   144 		    }
       
   145 		else if ( iType != MP4_TYPE_NONE )
       
   146 		    {
       
   147 		    __FILESOURCE_CONTROLL( "CMccFileVideo::\
       
   148 ParseUpdateVideoDescriptions contains unsupported video" )
       
   149 		    iFourCC = TFourCC( KMccFourCCUnsupported );
       
   150 		    }
       
   151 		else
       
   152 		    {
       
   153 		    // NOP
       
   154 		    }
       
   155 		}
       
   156         
       
   157 	return containVideo;	
       
   158 	}
       
   159 
       
   160 // -----------------------------------------------------------------------------
       
   161 // CMccFileVideo::IsAVC
       
   162 // -----------------------------------------------------------------------------
       
   163 //
       
   164 TBool CMccFileVideo::IsAVC()
       
   165 	{
       
   166 	if ( ( iType == MP4_TYPE_AVC_PROFILE_BASELINE ) ||
       
   167          ( iType == MP4_TYPE_AVC_PROFILE_MAIN )	 ||
       
   168          ( iType == MP4_TYPE_AVC_PROFILE_EXTENDED )
       
   169        )
       
   170 	    {
       
   171 	   	return ETrue;
       
   172 	    }
       
   173     
       
   174     return EFalse;	
       
   175 	}
       
   176 	
       
   177 // -----------------------------------------------------------------------------
       
   178 // CMccFileVideo::DoSetPositionL
       
   179 // -----------------------------------------------------------------------------
       
   180 //
       
   181 void CMccFileVideo::DoSetPositionL( TUint32 aPosition )
       
   182 	{
       
   183 	__FILESOURCE_CONTROLL( "CMccFileVideo::DoSetPositionL" )
       
   184 
       
   185     __ASSERT_ALWAYS( aPosition <= iLength, User::Leave( KErrArgument ) );
       
   186     mp4_u32 audioPos = 0;
       
   187     // if retrun value is MP4_OK, iPosition is updated
       
   188     if ( MP4ParseSeek( iMP4Handle, ( mp4_u32 ) aPosition,
       
   189          ( mp4_u32* )&audioPos, ( mp4_u32* ) &iPosition, MP4TRUE )
       
   190         != MP4_OK )
       
   191 	    {
       
   192 	   	User::Leave( KErrGeneral );
       
   193 	    }
       
   194 	}
       
   195 
       
   196 // -----------------------------------------------------------------------------
       
   197 // CMccFileVideo::Type
       
   198 // -----------------------------------------------------------------------------
       
   199 //
       
   200 CCMRMediaBuffer::TBufferType CMccFileVideo::Type()
       
   201 	{
       
   202 	return iBufferType;	
       
   203 	}
       
   204 
       
   205 // -----------------------------------------------------------------------------
       
   206 // CMccFileVideo::GetFourCC
       
   207 // -----------------------------------------------------------------------------
       
   208 //
       
   209 TFourCC CMccFileVideo::GetFourCC()
       
   210 	{
       
   211 	return iFourCC;
       
   212 	}
       
   213 
       
   214 // -----------------------------------------------------------------------------
       
   215 // CMccFileVideo::TickCallBack
       
   216 // -----------------------------------------------------------------------------
       
   217 //
       
   218 TCallBack CMccFileVideo::TickCallBack()
       
   219     {
       
   220     return TCallBack( TickVideoL, this );
       
   221     }
       
   222 
       
   223 // -----------------------------------------------------------------------------
       
   224 // CMccFileVideo::GetConfigKeyL
       
   225 // -----------------------------------------------------------------------------
       
   226 //
       
   227 HBufC8* CMccFileVideo::GetConfigKeyL()
       
   228     {
       
   229     __ASSERT_ALWAYS( IsAVC(), User::Leave( KErrNotSupported ) );
       
   230     HBufC8* configKey = NULL;
       
   231     ExtractH264ParameterSetNALUsL( &configKey, ETrue );
       
   232     return configKey;
       
   233     }
       
   234     
       
   235 // -----------------------------------------------------------------------------
       
   236 // CMccFileVideo::Position
       
   237 // -----------------------------------------------------------------------------
       
   238 //
       
   239 TUint32 CMccFileVideo::Position()
       
   240 	{
       
   241 	return iPosition;
       
   242 	}
       
   243 	
       
   244 // -----------------------------------------------------------------------------
       
   245 // CMccFileVideo::DurationL
       
   246 // -----------------------------------------------------------------------------
       
   247 //
       
   248 TUint32 CMccFileVideo::Duration()
       
   249 	{
       
   250 	return iLength;	
       
   251 	}
       
   252 	
       
   253 // -----------------------------------------------------------------------------
       
   254 // CMccFileVideo::AudioBitRateL
       
   255 // -----------------------------------------------------------------------------
       
   256 //
       
   257 TUint32 CMccFileVideo::AudioBitRate()
       
   258 	{
       
   259     return 0;
       
   260 	}
       
   261 
       
   262 
       
   263 // -----------------------------------------------------------------------------
       
   264 // CMccFileVideo::VideoFrameSizeL
       
   265 // -----------------------------------------------------------------------------
       
   266 //
       
   267 TSize CMccFileVideo::VideoFrameSize()
       
   268 	{
       
   269 	TSize size;
       
   270 	size.iWidth = iWidth;
       
   271 	size. iHeight = iHeight;
       
   272 	
       
   273 	return size;	
       
   274 	}
       
   275 
       
   276 // -----------------------------------------------------------------------------
       
   277 // CMccFileVideo::VideoFrameRateL
       
   278 // -----------------------------------------------------------------------------
       
   279 //
       
   280 TReal CMccFileVideo::VideoFrameRateL()
       
   281 	{
       
   282 	// Round to have zero decimals for clearness sake
       
   283 	TReal roundedFrameRate;
       
   284 	User::LeaveIfError( Math::Round( roundedFrameRate, iFrameRate, 0 ) );
       
   285     return roundedFrameRate;	
       
   286 	}
       
   287  
       
   288 // -----------------------------------------------------------------------------
       
   289 // CMccFileVideo::StartTimerL
       
   290 // -----------------------------------------------------------------------------
       
   291 //                     
       
   292 void CMccFileVideo::StartTimerL()        
       
   293 	{
       
   294 	__FILESOURCE_CONTROLL( "CMccFileVideo::StartTimerL" )
       
   295 
       
   296 	if ( IsPaused() )
       
   297 	    {
       
   298 	    SetPaused( EFalse );
       
   299 	    
       
   300 	    SetPositionL( iPosition, ETrue );
       
   301 	    }
       
   302 	else
       
   303 	    {
       
   304 	    SetStartTime();
       
   305 	    }
       
   306 	    
       
   307 	const TReal KMccSecondInMicroSeconds = 1000000;
       
   308 	TInt tickIntervalVideo = (TInt)KMccSecondInMicroSeconds;
       
   309     if ( iFrameRate != 0 )
       
   310         {
       
   311         // Set interval for video
       
   312         tickIntervalVideo = (TInt)( KMccSecondInMicroSeconds / iFrameRate ); 
       
   313         
       
   314         // Increase tick rate 22%
       
   315         const TReal KMccTickModifier = 0.78;
       
   316         tickIntervalVideo =(TInt) (tickIntervalVideo * KMccTickModifier);
       
   317         }
       
   318 	
       
   319 	__FILESOURCE_CONTROLL_INT1( "CMccFileVideo::StartTimer (timer):", 
       
   320                                 tickIntervalVideo )
       
   321     
       
   322     iTimerInterval = tickIntervalVideo;
       
   323     iCorrectionInterval = iTimerInterval;
       
   324                             
       
   325 	iPeriodicRunner->Start( tickIntervalVideo, TCallBack( TickVideoL, this ));	
       
   326 	
       
   327 	__FILESOURCE_CONTROLL( "CMccFileVideo::StartTimerL, exit" )
       
   328 	}
       
   329 
       
   330 // -----------------------------------------------------------------------------
       
   331 // CMccFileVideo::TickVideoL
       
   332 // -----------------------------------------------------------------------------
       
   333 //
       
   334 TInt CMccFileVideo::TickVideoL( TAny* aObject )
       
   335 	{
       
   336 	__FILESOURCE_CONTROLL( "CMccFileVideo::TickVideoL" )
       
   337 	
       
   338 	static_cast<CMccFileVideo*>(aObject)->ReadFrameL();
       
   339 	return KErrNone;
       
   340 	}
       
   341 
       
   342 // -----------------------------------------------------------------------------
       
   343 // CMccFileVideo::ReadFrameL
       
   344 // -----------------------------------------------------------------------------
       
   345 // 
       
   346 void CMccFileVideo::ReadFrameL()
       
   347 	{
       
   348 	__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL" )
       
   349 	
       
   350         
       
   351     MP4Err retval = MP4ParseIsFrameAvailable( iMP4Handle, iType );
       
   352     
       
   353   	if (  retval != MP4_OK )
       
   354 	  	{
       
   355 	    __FILESOURCE_CONTROLL_INT1( "CMccFileVideo::ReadFrameL, no video", retval )
       
   356 
       
   357 		SetPaused( ETrue );
       
   358 		TRAPD( positionErr, SetPositionL( 0 ) );
       
   359 		iSource.PauseVideoL( positionErr );	
       
   360         return;
       
   361 	  	}
       
   362     
       
   363     // Read the size of next video frame
       
   364   	__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, reading frame" ) 
       
   365    
       
   366     if ( MP4ParseNextFrameSize( iMP4Handle, iType,
       
   367         ( mp4_u32* ) &iBufferSize ) != MP4_OK )
       
   368 	    {
       
   369 	    __FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, \
       
   370 MP4ParseNextFrameSize not Ok" ) 
       
   371         return;
       
   372 	    }
       
   373     
       
   374     TInt aVCNALUsBufferLen = 0;
       
   375     if ( IsAVC() && iIsFirstFrame )
       
   376     	{
       
   377     	delete iAVCNALUsBuffer;
       
   378 	    iAVCNALUsBuffer = NULL;	
       
   379 
       
   380     	ExtractH264ParameterSetNALUsL( &iAVCNALUsBuffer );
       
   381     	if( iAVCNALUsBuffer )
       
   382 	    	{
       
   383 	    	aVCNALUsBufferLen += iAVCNALUsBuffer->Length();	
       
   384 	    	}
       
   385     	iIsFirstFrame = EFalse;
       
   386     	}
       
   387     	
       
   388     // Allocate a buffer big enough for the next video frame
       
   389   	__FILESOURCE_CONTROLL_INT1( "CMccFileVideo::ReadFrameL, reading frame, size", iBufferSize )
       
   390     HBufC8* mediaBuffer = HBufC8::NewLC( iBufferSize + aVCNALUsBufferLen );
       
   391     TPtr8 mediaSinkBuffer = mediaBuffer->Des();
       
   392     mediaSinkBuffer.SetLength( iBufferSize + aVCNALUsBufferLen );
       
   393     TUint8* ptrMediaBuffer = CONST_CAST(TUint8*, mediaBuffer->Ptr());
       
   394 
       
   395     TBool keyFrame = EFalse;
       
   396     
       
   397     TUint32 oldPosition = iPosition;
       
   398     if ( MP4ParseReadVideoFrame( iMP4Handle,
       
   399         ( mp4_u8* ) ptrMediaBuffer, ( mp4_u32 ) iBufferSize,
       
   400         ( mp4_u32* ) &iFrameSize, ( mp4_u32* ) &iPosition,
       
   401         ( mp4_bool* ) &keyFrame, NULL ) != MP4_OK )
       
   402 		{
       
   403 		__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, reading frame, NOT OK" )
       
   404 		CleanupStack::PopAndDestroy( mediaBuffer );
       
   405         }
       
   406     else
       
   407     	{
       
   408  		__FILESOURCE_CONTROLL_INT1( "CMccFileVideo::ReadFrameL, reading frame, OK, position", 
       
   409  		                            iPosition )   		
       
   410 
       
   411         DoTimingCorrection( iPosition );
       
   412                
       
   413         // Update read interval (how much position changes on each frame read)
       
   414         iReadInterval = iPosition - oldPosition;
       
   415                
       
   416         if ( IsAVC() )
       
   417 	        {
       
   418 	        MarkWithNALUDelimiters( iBufferSize, mediaSinkBuffer );
       
   419 	    	}
       
   420 
       
   421         TTimeIntervalMicroSeconds timeStamp = GetTimeStamp();
       
   422         
       
   423         CMccFrameItem* item = new (ELeave) CMccFrameItem();
       
   424         item->iFrame = mediaBuffer;
       
   425         CleanupStack::Pop( mediaBuffer );
       
   426         CleanupStack::PushL( item );
       
   427         item->iTimeStamp = timeStamp;
       
   428         item->iKeyFrame = keyFrame;
       
   429         iFrames.AppendL( item );
       
   430         CleanupStack::Pop( item );
       
   431         
       
   432         WriteBufferL();
       
   433 		}
       
   434     
       
   435     __FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, Time Check 2" )    		
       
   436 
       
   437   	__FILESOURCE_CONTROLL( "CMccFileVideo::ReadFrameL, \
       
   438 writing buffer to sink complete" ) 		
       
   439 	}
       
   440 
       
   441 // -----------------------------------------------------------------------------
       
   442 // CMccFileVideo::MarkWithNALUDelimiters()
       
   443 // -----------------------------------------------------------------------------
       
   444 //
       
   445 void CMccFileVideo::MarkWithNALUDelimiters( 
       
   446 	const TInt aAccessUnitSize, TDes8& aBuffer )
       
   447 	{
       
   448     __FILESOURCE_CONTROLL( "CMccFileVideo::MarkWithNALUDelimiters" )
       
   449     
       
   450     TUint8* ptrByte = NULL;
       
   451     TInt indx = 0;
       
   452     TUint32 size;
       
   453     const TUint32 size_field_len = 4;
       
   454     
       
   455     do
       
   456 	    {
       
   457     	ptrByte = const_cast<TUint8*> ( aBuffer.Mid( indx ).Ptr() );	// get starting point of NALU size
       
   458     	size = BigEndian::Get32(ptrByte);	// get NALU size
       
   459     	aBuffer[indx+0] = 0x00;
       
   460     	aBuffer[indx+1] = 0x00;
       
   461     	aBuffer[indx+2] = 0x00;
       
   462     	aBuffer[indx+3] = 0x01;
       
   463     	indx = indx + size + size_field_len;
       
   464     	
       
   465 	    }while(indx < aAccessUnitSize);
       
   466     
       
   467 	}
       
   468 
       
   469 // -----------------------------------------------------------------------------
       
   470 // CMccFileVideo::ExtractH264ParameterSetNALUsL()
       
   471 // -----------------------------------------------------------------------------
       
   472 //
       
   473 void CMccFileVideo::ExtractH264ParameterSetNALUsL( 
       
   474     HBufC8** aBufferOut, 
       
   475     TBool aSdpFormat )
       
   476 	{
       
   477 	__FILESOURCE_CONTROLL( "CMccFileVideo::ExtractH264ParameterSetNALUsL" )
       
   478 	
       
   479 	*aBufferOut = NULL;
       
   480 	
       
   481 	HBufC8* buffer = NULL;
       
   482 	HBufC8* bufferOut = NULL;
       
   483 	TUint32 decspecinfosize;
       
   484 	TUint8* ptrByte;
       
   485 	
       
   486 	// Query for size, buffer too small error is ok as we give zero length buffer
       
   487 	MP4Err retval = MP4ParseReadVideoDecoderSpecificInfo( 
       
   488 	    iMP4Handle, ( mp4_u8* ) NULL, 0, ( mp4_u32* ) &decspecinfosize );
       
   489 	    
       
   490 	if ( retval != MP4_OK && retval != MP4_BUFFER_TOO_SMALL )
       
   491 		{
       
   492 		User::Leave(KErrGeneral);
       
   493 		}
       
   494 	
       
   495 	buffer = HBufC8::NewLC(decspecinfosize);
       
   496 	ptrByte = const_cast<TUint8*> ( buffer->Des().Ptr() );
       
   497 	
       
   498 	if( MP4ParseReadVideoDecoderSpecificInfo( iMP4Handle,
       
   499 											  ( mp4_u8* ) ptrByte,
       
   500 											  ( mp4_u32 ) buffer->Des().MaxSize(),
       
   501 											  ( mp4_u32* ) &decspecinfosize
       
   502 											 ) != MP4_OK )
       
   503 		{
       
   504 		User::Leave(KErrGeneral);
       
   505 		}
       
   506 	else
       
   507 		{
       
   508 		buffer->Des().SetLength( decspecinfosize );
       
   509 		}
       
   510 	    
       
   511 	const TUint two = 2;
       
   512 	bufferOut = HBufC8::NewLC( buffer->Size() * two );
       
   513 	TPtr8 ptrBufferOut = bufferOut->Des();
       
   514 	TPtr8 ptrBuffer = buffer->Des();
       
   515 	    
       
   516 	// find NALUs in decoder info and put in buffer by marking with delimiters
       
   517 	
       
   518 	TUint8 tmpByte;
       
   519 	TUint16 size16;
       
   520 	TInt indx = 5;		// skip other info in the beginning
       
   521 	TInt numNALUs = 0;
       
   522 	TInt lp_indx;
       
   523 	
       
   524 	// get number of seq. parameter set NALUs
       
   525 	tmpByte = ptrBuffer[indx++];
       
   526 	numNALUs = tmpByte & 0x1F;		// get rid of reserved '111' bits
       
   527 	
       
   528 	// extract seq. parameter set NALUs
       
   529 	
       
   530 	for ( lp_indx = 0; lp_indx < numNALUs; lp_indx++ )
       
   531 		{
       
   532 		size16 = BigEndian::Get16( ptrBuffer.Mid( indx ).Ptr() );
       
   533 		indx += 2;
       
   534 		
       
   535 		if ( aSdpFormat )
       
   536 		    {
       
   537 		    // TBD: take possibility of multiple nalus into account
       
   538 		    HBufC8* base64Encoded = 
       
   539 		        MccConversionUtility::Base64EncodeLC( ptrBuffer.Mid( indx, size16 ) ); 
       
   540 		    ptrBufferOut.Append( *base64Encoded );
       
   541 		    CleanupStack::PopAndDestroy( base64Encoded );
       
   542     		}
       
   543         else
       
   544             {
       
   545             // insert delimiter
       
   546     		tmpByte = 0x00;
       
   547     		ptrBufferOut.Append( &tmpByte, 1 );
       
   548     		ptrBufferOut.Append( &tmpByte, 1 );
       
   549     		ptrBufferOut.Append( &tmpByte, 1 );
       
   550     		tmpByte = 0x01;
       
   551     		ptrBufferOut.Append( &tmpByte, 1 );
       
   552 
       
   553     		ptrBufferOut.Append( ptrBuffer.Mid( indx, size16 ) );
       
   554 	    	}
       
   555 	    	
       
   556 		indx  += size16;
       
   557 		}
       
   558 	
       
   559 	// get number of pic. parameter set NALUs
       
   560 	tmpByte = ptrBuffer[indx++];
       
   561 	numNALUs = tmpByte;
       
   562 	
       
   563 	// extract pic. parameter set NALUs
       
   564 	
       
   565 	for ( lp_indx = 0; lp_indx < numNALUs; lp_indx++ )
       
   566 		{
       
   567 		size16 = BigEndian::Get16( ptrBuffer.Mid( indx ).Ptr() );
       
   568 		indx += 2;
       
   569 		
       
   570 		if ( aSdpFormat )
       
   571 		    {
       
   572 		    // TBD: take possibility of multiple nalus into account
       
   573 		    _LIT8( KMccFileSinkNaluSeparator, "," );
       
   574 		    ptrBufferOut.Append( KMccFileSinkNaluSeparator );
       
   575 		    HBufC8* base64Encoded = 
       
   576 		        MccConversionUtility::Base64EncodeLC( ptrBuffer.Mid( indx, size16 ) ); 
       
   577 		    ptrBufferOut.Append( *base64Encoded );
       
   578 		    CleanupStack::PopAndDestroy( base64Encoded );
       
   579     		}
       
   580         else
       
   581             {
       
   582     		// insert delimiter
       
   583     		tmpByte = 0x00;
       
   584     		ptrBufferOut.Append( &tmpByte, 1 );
       
   585     		ptrBufferOut.Append( &tmpByte, 1 );
       
   586     		ptrBufferOut.Append( &tmpByte, 1 );
       
   587     		tmpByte = 0x01;
       
   588     		ptrBufferOut.Append( &tmpByte, 1 );
       
   589     		
       
   590     		ptrBufferOut.Append( ptrBuffer.Mid( indx, size16 ) );
       
   591             }
       
   592 		
       
   593 		indx  += size16;
       
   594 		}
       
   595 	
       
   596 	CleanupStack::Pop( bufferOut );	
       
   597 	CleanupStack::PopAndDestroy( buffer );
       
   598 	
       
   599 	*aBufferOut = bufferOut;
       
   600 	
       
   601 	__FILESOURCE_CONTROLL( "CMccFileVideo::ExtractH264ParameterSetNALUsL, exit" )
       
   602 	}
       
   603 
       
   604 // -----------------------------------------------------------------------------
       
   605 // CMccFileVideo::InsertParameterSetNALUs
       
   606 // -----------------------------------------------------------------------------
       
   607 //
       
   608 TBool CMccFileVideo::InsertParameterSetNALUs()
       
   609     {
       
   610     TBool insertParameterSets( iInsertParameterSets );
       
   611     if ( insertParameterSets )
       
   612         {
       
   613         iInsertParameterSets = EFalse;
       
   614         iInsertParameterSetsTime.HomeTime();
       
   615         }
       
   616     else
       
   617         {
       
   618         TTime currentTime;
       
   619         currentTime.HomeTime();
       
   620         if ( currentTime.MicroSecondsFrom( iInsertParameterSetsTime ).Int64() > 
       
   621                 KMccFileSourceParameterSetsIntervalInMicroSeconds )
       
   622             {
       
   623             // Enough time elapsed from previous parameter set NALUs,
       
   624             // insert them at next round.
       
   625             iInsertParameterSets = ETrue;
       
   626             }
       
   627         }
       
   628     return insertParameterSets;
       
   629     }
       
   630 
       
   631 // -----------------------------------------------------------------------------
       
   632 // CMccFileVideo::GetTimeStamp
       
   633 // -----------------------------------------------------------------------------
       
   634 //
       
   635 TTimeIntervalMicroSeconds CMccFileVideo::GetTimeStamp()
       
   636 	{
       
   637     TInt64 position = iPosition + iPositionModifier;
       
   638     TUint32 position2 = ( position < 0 ) ? 0 : (TUint32)position;
       
   639 	TTimeIntervalMicroSeconds timeStamp = 
       
   640 	    TTimeIntervalMicroSeconds ( (TInt64) position2 * KMccMicroToMilliConst );
       
   641    	
       
   642    	__FILESOURCE_CONTROLL_INT1( "CMccFileVideo::GetTimeStamp timestamp (without clock frequency):", 
       
   643                                 timeStamp.Int64() )
       
   644    	return timeStamp;
       
   645 	}
       
   646 
       
   647 // -----------------------------------------------------------------------------
       
   648 // CMccFileVideo::WriteBufferL
       
   649 // If AVC NALUS buffer exists, it is passed always before keyframe and it uses
       
   650 // timestamp of that frame. It is also passed always at beginning even if first
       
   651 // frame wouldn't be keyframe.
       
   652 // -----------------------------------------------------------------------------
       
   653 //
       
   654 void CMccFileVideo::WriteBufferL()
       
   655     {
       
   656     __FILESOURCE_CONTROLL("CMccFileVideo::WriteBufferL")
       
   657     
       
   658     if ( iFrames.Count() && iConsumer && iConsumerBuffer )
       
   659 	    {
       
   660 	    TBool removeCurrentFrame( ETrue );
       
   661 	    
       
   662         CMMFDataBuffer* buf = static_cast<CMMFDataBuffer*>(iConsumerBuffer); 		
       
   663 
       
   664         CMccFrameItem* item = iFrames[0];
       
   665         HBufC8* videoFrame = item->iFrame;
       
   666         
       
   667         if ( iAVCNALUsBuffer && InsertParameterSetNALUs() )
       
   668             {
       
   669             videoFrame = iAVCNALUsBuffer;
       
   670             removeCurrentFrame = EFalse;
       
   671             }
       
   672         
       
   673 	    if ( buf->Data().MaxLength() >= videoFrame->Des().Length() )
       
   674 		    {   
       
   675 		    buf->Data().Delete( 0, buf->BufferSize() );
       
   676             	
       
   677 			buf->Data().Append( *videoFrame );	
       
   678 			
       
   679 			iConsumerBuffer->SetTimeToPlay(item->iTimeStamp);
       
   680 			iConsumerBuffer->SetLastBuffer(EFalse);
       
   681 			iConsumerBuffer->SetFrameNumber( iSequenceNum );
       
   682 			
       
   683 			if ( removeCurrentFrame )
       
   684 			    {
       
   685 		        if ( iMccResources && item->iKeyFrame )
       
   686 		            {
       
   687 		            iMccResources->StoreKeyFrameInfoL( iEndpointId, *iConsumerBuffer );
       
   688 		            }
       
   689 		         
       
   690 			    delete item;
       
   691     			iFrames.Remove(0);
       
   692 			    }
       
   693 
       
   694 			videoFrame = NULL;
       
   695 		
       
   696 			iConsumer->BufferFilledL( iConsumerBuffer );
       
   697 			iConsumer = NULL;
       
   698 			iConsumerBuffer = NULL;
       
   699 			iSequenceNum++;
       
   700 			__FILESOURCE_CONTROLL("CMccFileVideo::WriteBufferL, done")
       
   701 		    }
       
   702 		else
       
   703 			{
       
   704 			__FILESOURCE_CONTROLL("CMccFileVideo::WriteBufferL, drop frame")
       
   705 			delete iFrames[0];
       
   706 			iFrames.Remove(0);
       
   707 			videoFrame = NULL;
       
   708 			}
       
   709 	    }
       
   710 	else
       
   711 	    {
       
   712 	    __FILESOURCE_CONTROLL("CMccFileVideo::WriteBufferL, writing ignored")
       
   713 	    }
       
   714     }
       
   715 
       
   716