--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccamrpayloadformat/src/amrpayloadformatter.cpp Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,150 @@
+/*
+* Copyright (c) 2002-2006 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 "amrpayloadformatter.h"
+#include "amrcommonutil.h"
+
+// CONSTANTS
+
+// ============================= LOCAL FUNCTIONS ===============================
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+
+// -----------------------------------------------------------------------------
+// CAmrPayloadFormatter::CAmrPayloadFormatter
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CAmrPayloadFormatter::CAmrPayloadFormatter( TBool aIsNb )
+ : iIsNb( aIsNb ),
+ iChannelCount( 1 ),
+ iFrameBlockCount( 1 ),
+ iFrameCount( iChannelCount * iFrameBlockCount ),
+ iModeRequest( EAmrModeReqNone ),
+ iPayloadPtr( 0, 0, 0 )
+ {}
+
+// Destructor
+CAmrPayloadFormatter::~CAmrPayloadFormatter( )
+ {
+ iPayload = NULL;
+ iFrameDatas.ResetAndDestroy();
+ }
+
+// -----------------------------------------------------------------------------
+// CAmrPayloadFormatter::Initialize
+// Initialize formatter. MUST be done always when starting decoding/encoding
+// possibly after pause/stop. Redundant frames collected so far are destroyed as
+// well as frames received for redundancy detection.
+// -----------------------------------------------------------------------------
+//
+void CAmrPayloadFormatter::Initialize()
+ {
+ iFrameDatas.ResetAndDestroy();
+ DoInitialize();
+ }
+
+// -----------------------------------------------------------------------------
+// CAmrPayloadFormatter::SetPayloadBuffer
+// Set payload buffer.
+// -----------------------------------------------------------------------------
+//
+void CAmrPayloadFormatter::SetPayloadBuffer( TDes8& aBuffer )
+ {
+ iPayload = const_cast<TUint8*>( aBuffer.Ptr( ) );
+ iPayloadSize = aBuffer.Length( );
+ iPayloadPtr.Set( iPayload, aBuffer.Length( ), aBuffer.MaxLength( ) );
+ }
+
+
+// -----------------------------------------------------------------------------
+// CAmrPayloadFormatter::SetChannelCount
+// Set number of audio channels.
+// -----------------------------------------------------------------------------
+//
+TInt CAmrPayloadFormatter::SetChannelCount( TInt aChannelCount )
+ {
+ if ( KMaxChannelCount < aChannelCount || aChannelCount < 1 )
+ {
+ return KErrArgument;
+ }
+
+ iChannelCount = aChannelCount;
+ iFrameCount = iChannelCount * iFrameBlockCount;
+ return KErrNone;
+ }
+
+
+// -----------------------------------------------------------------------------
+// CAmrPayloadFormatter::SetFramesBlockCount
+// Set number of AMR frame blocks included in one RTP packet.
+// -----------------------------------------------------------------------------
+//
+TInt CAmrPayloadFormatter::SetFrameBlockCount( TInt aFrameblockCount )
+ {
+ if ( KMaxFrameBlocksPerPacket < aFrameblockCount || aFrameblockCount < 1 )
+ {
+ return KErrArgument;
+ }
+
+ iFrameBlockCount = aFrameblockCount;
+ iFrameCount = iChannelCount * iFrameBlockCount;
+ return KErrNone;
+ }
+
+
+// -----------------------------------------------------------------------------
+// CAmrPayloadFormatter::SpeechBitCount
+// Get number of speech bits in an AMR frame.
+// -----------------------------------------------------------------------------
+//
+TInt CAmrPayloadFormatter::SpeechBitCount( enum TAmrFrameType aFrameType ) const
+ {
+ if ( iIsNb )
+ {
+ if ( aFrameType > EAmrFrameSid)
+ {
+ return 0;
+ }
+ else
+ {
+ return KAmrNbTotalSpeechBits[TInt( aFrameType )];
+ }
+ }
+ else
+ {
+ if ( aFrameType > EAmrWbFrameSid)
+ {
+ return 0;
+ }
+ else
+ {
+ return KAmrWbTotalSpeechBits[TInt( aFrameType )];
+ }
+ }
+ }
+
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+// End of File