--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccamrpayloadformat/src/AmrPayloadEncoderOA.cpp Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,180 @@
+/*
+* 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: PayloadFormat plugin capable to read RTP payload containing
+* Amr audio.
+*
+*/
+
+
+
+
+// INCLUDE FILES
+#include "amrpayloadencoderoa.h"
+#include "amrpayloadheaderoa.h"
+#include "amrtocentryoa.h"
+
+
+// ============================ MEMBER FUNCTIONS =============================
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoderOA::CAmrPayloadEncoderOA
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// ---------------------------------------------------------------------------
+//
+CAmrPayloadEncoderOA::CAmrPayloadEncoderOA( TBool aIsNb )
+ : CAmrPayloadEncoder( aIsNb )
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::CAmrPayloadEncoderOA" );
+
+ CAmrPayloadEncoderOA::InitializeFrameEncoder( );
+ }
+
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoderOA::ConstructL
+// Symbian 2nd phase constructor can leave.
+// ---------------------------------------------------------------------------
+//
+void CAmrPayloadEncoderOA::ConstructL()
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::ConstructL" );
+
+ // Allocate memory for iHeaderEncoder and iTocEntryEncoder and set them
+ // to NULL to avoid codescanner errors
+ delete iHeaderEncoder;
+ iHeaderEncoder = NULL;
+ delete iTocEntryEncoder;
+ iTocEntryEncoder = NULL;
+
+ iHeaderEncoder = CAmrPayloadHeaderOA::NewL();
+ iTocEntryEncoder = CAmrTocEntryOA::NewL();
+ }
+
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoder::NewL
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CAmrPayloadEncoderOA* CAmrPayloadEncoderOA::NewL( TBool aIsNb )
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::NewL" );
+
+ CAmrPayloadEncoderOA* self = new( ELeave ) CAmrPayloadEncoderOA( aIsNb );
+
+ CleanupStack::PushL( self );
+ self->ConstructL( );
+ CleanupStack::Pop( self );
+
+ return self;
+ }
+
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoderOA::~CAmrPayloadEncoderOA
+// Destructor
+// ---------------------------------------------------------------------------
+//
+CAmrPayloadEncoderOA::~CAmrPayloadEncoderOA()
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::~CAmrPayloadEncoderOA" );
+ }
+
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoderOA::EncodeFrame
+// Encode a received Amr frame into the payload buffer.
+// ---------------------------------------------------------------------------
+//
+TBool CAmrPayloadEncoderOA::EncodeFrame( TInt aChannel,
+ TAmrFrameType aFrameType,
+ TUint8 aFrameQualityInd,
+ const TDes8& aFrameData )
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::EncodeFrame" );
+
+ TBool ret = CAmrPayloadEncoder::EncodeFrame( aChannel, aFrameType,
+ aFrameQualityInd, aFrameData );
+ if ( EFalse == ret )
+ {
+ // Encoding a frame data only. Payload Header and TOCs haven't been filled
+ // Padding frame data to Byte boundary.
+ if ( iFrameEncoder.BitIndex( ) != 0 )
+ {
+ iFrameEncoder.Encode( 0, ( KBitsIn1Byte - iFrameEncoder.BitIndex( ) ) );
+ }
+ }
+ else
+ {
+ InitializeFrameEncoder();
+ }
+
+ return ret;
+ }
+
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoderOA::SetChannelCount
+// Set number of audio channels.
+// ---------------------------------------------------------------------------
+//
+TInt CAmrPayloadEncoderOA::SetChannelCount( TInt aChannelCount )
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::SetChannelCount" );
+
+ TInt ret = CAmrPayloadFormatter::SetChannelCount( aChannelCount );
+ InitializeFrameEncoder( );
+ return ret;
+ }
+
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoderOA::SetFrameBlockCount
+// Set number of Amr frame blocks included in one RTP packet.
+// ---------------------------------------------------------------------------
+//
+TInt CAmrPayloadEncoderOA::SetFrameBlockCount( TInt aFrameblockCount )
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::SetFrameBlockCount" );
+
+ TInt ret = CAmrPayloadFormatter::SetFrameBlockCount( aFrameblockCount );
+ InitializeFrameEncoder();
+ return ret;
+ }
+
+
+// ---------------------------------------------------------------------------
+// CAmrPayloadEncoderOA::InitializeFrameEncoder
+// Initialize frame encoder ( Stream Encoder ). Starting position of first
+// AMR frame data is calculated. Refer to RFC3267 4.4.
+// ---------------------------------------------------------------------------
+//
+void CAmrPayloadEncoderOA::InitializeFrameEncoder()
+ {
+ DP_AMR_ENCODE( "CAmrPayloadEncoderOA::InitializeFrameEncoder" );
+
+ // Total number of TOCs: iFrameCount = iChannelCount * iFrameBlockCount
+ // In OA mode, Bit Index always equals to Zero.
+ TInt numOfRedFrames( 0 );
+ if ( iRedIntervalCollected )
+ {
+ numOfRedFrames = iFrameDatas.Count();
+ }
+
+ TInt frameByteIndex = ( KHeaderBitsOA
+ + KTOCFieldBitsOA * ( iFrameCount + numOfRedFrames ) ) / KBitsIn1Byte;
+
+ iFrameEncoder.Initialize( iPayload, frameByteIndex, 0 );
+ }