--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/audioeditorengine/inc/ProcEncoder.h	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,152 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "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:
+* Ixonos Plc
+*
+* Description:  
+*
+*/
+
+
+
+#ifndef __CPROCENCODER_H__
+#define __CPROCENCODER_H__
+
+#include <e32base.h>
+#include <f32file.h>
+#include <MMFCodec.h>
+
+#include "AudCommon.h"
+#include "ProcConstants.h"
+
+class CProcEncoder : public CBase
+    {
+
+public:
+    
+    /*
+    * Symbian constructors
+    */
+    
+    static CProcEncoder* NewL();
+                                        
+    static CProcEncoder* NewLC();
+
+    /*
+    * Destructor
+    */
+    ~CProcEncoder();
+
+    
+    /*
+    * Initializes encoder
+    *
+    * @param aAudioType             target audio type, EAudAMR and EAudAAC_MPEG4 supported
+    * @param aTargetSamplingRate    target sampling rate, 8000, 16000 supported, later 48000
+    * @param aChannelMode           target channel mode EAudSingleChannel supported, stereo later
+    *
+    * @return   ETrue if successful, EFalse if not
+    *
+    */
+    
+    TBool InitL(TAudType aAudioType, TInt aTargetSamplingRate, TChannelMode aChannelMode, TInt aBitrate);
+    
+    /*
+    * Feed the encoder
+    * If the encoder has enough data, output is written to aEncBuffer
+    *
+    * @param aRawFrame             input for the encoder, must have the same sample rate
+    *                              and channel mode as the desired target
+    * @param aEncBuffer            buffer for output
+    * @param aOutputDurationMilli  duration of the output buffer in return
+    *
+    * @return   ETrue if data was written to aEncBuffer, EFalse otherwise
+    *
+    */
+    TBool FillEncBufferL(const TDesC8& aRawFrame, HBufC8* aEncBuffer, TInt& aOutputDurationMilli);
+    
+    /*
+    * Returns the destination audio type
+    *
+    * @return destination audio type
+    */
+    TAudType DestAudType();
+    
+protected:
+    
+    // constructL    
+    void ConstructL();
+    
+    // C++ constructor
+    CProcEncoder();
+    
+    // reallocates a data buffer
+    void ReAllocBufferL( CMMFDataBuffer* aBuffer, TInt aNewMaxSize );
+    
+    // feed codec
+    void FeedCodecL( CMMFCodec* aCodec, CMMFDataBuffer* aSourceBuffer, CMMFDataBuffer* aDestBuffer );
+    
+    // encodeL
+    TCodecProcessResult EncodeL( CMMFCodec* aCodec, CMMFDataBuffer* aInBuffer, CMMFDataBuffer* aOutBuffer);
+ 
+    // is the destination codec supported?
+    TBool GetIsSupportedDestCodec();
+     
+    // configure AMR encoder
+    void ConfigureAMREncoderL();
+    
+    // configure AAC encoder
+    void ConfigureAACEncoderL();
+    
+    // set destination codec
+    void SetDestCodecL();
+     
+    // is codec available?
+    TBool CheckIfCodecAvailableL(const TDesC8& aCodecFourCCString, const TUid& aCodecUId);
+    
+protected:    
+
+    // target audio type
+    TAudType iAudioType;
+    
+    // is encoder ready for processing
+    TBool iReady;
+    
+    // Input buffer for raw data
+    CMMFDataBuffer* iSourceInputBuffer;
+    
+    // Input buffer for encoder (alternative output buffer for decoder).
+    CMMFDataBuffer* iDestInputBuffer;
+        
+    // Codec used in decoding input audio to PCM16
+    CMMFCodec* iDestCodec;
+    
+    // Samplerate to encode to.
+    TInt iToSampleRate;
+    // Number of channels in output and input
+    TInt iToChannels;
+    
+    // target bitrate
+    TInt iToBitRate;
+    
+    // output duration
+    TInt iOutputFrameDurationMilli;
+    
+    // sometimes more than one AMR frame are written to the output with one call
+    TInt iNumberOfFramesInOutputBuffer;
+    
+    // buffer for output
+    HBufC8* iEncBuffer;
+      
+    };
+
+#endif