--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/audioeditorengine/inc/ProcDecoder.h	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,159 @@
+/*
+* 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 __CPROCProcDecoder_H__
+#define __CPROCProcDecoder_H__
+
+#include <e32base.h>
+#include <f32file.h>
+#include <MMFCodec.h>
+
+#include "AudCommon.h"
+#include "ProcConstants.h"
+#include "RateConverter.h"
+
+class CProcDecoder : public CBase
+    {
+
+public:
+    
+    /*
+    * Symbian constructors
+    *
+    */
+    
+    static CProcDecoder* NewL();
+                                        
+    static CProcDecoder* NewLC();
+
+    /*
+    * Destructor
+    */
+    ~CProcDecoder();
+    
+    /*
+    * Initialize the decoder
+    *
+    * @param aProperties            properties of the input clip (in compressed domain)
+    * @param aTargetSamplingRate    sampling rate to decode to
+    * @param aChannelMode           channel mode to decode to
+    *
+    * @return ETrue if successful
+    *
+    */
+
+    TBool InitL(TAudFileProperties aProperties, TInt aTargetSamplingRate, TChannelMode aChannelMode);
+
+    /*
+    * Feed the encoder
+    *
+    * @param    aEncFrame   encoded input frame
+    * @param    aDecbuffer  buffer for decoded output data
+    *
+    * @return   ETrue if output was generated, EFalse if more data is needed
+    */
+        
+    TBool FillDecBufferL(const HBufC8* aEncFrame, HBufC8*& aDecBuffer);
+    
+    
+
+protected:
+    
+    // constructL    
+    void ConstructL();
+    
+    // C++ constructor
+    CProcDecoder();
+    
+    // configure AAC decoder
+    // configure AAC Plus decoder
+    void ConfigureAACPlusDecoderL();
+    
+    // configure MP3 decoder
+    void ConfigureMP3DecoderL();
+    
+    // if input buffer is too small
+    void ReAllocBufferL( CMMFDataBuffer* aBuffer, TInt aNewMaxSize );
+    
+    // feed the codec
+    void FeedCodecL( CMMFCodec* aCodec, CMMFDataBuffer* aSourceBuffer, CMMFDataBuffer* aDestBuffer );
+    
+    // decode
+    TCodecProcessResult DecodeL( CMMFCodec* aCodec, CMMFDataBuffer* aInBuffer, CMMFDataBuffer* aOutBuffer);
+ 
+    // is supported dest codec?
+    TBool GetIsSupportedSourceCodec();
+     
+    // set source codec
+    void SetSourceCodecL();
+     
+    // is codec available?
+    TBool CheckIfCodecAvailableL(const TDesC8& aCodecFourCCString, const TUid& aCodecUId );
+ 
+    // update output buffer
+    TBool UpdateOutputBufferL(CMMFDataBuffer* aInBuffer);
+     
+ protected:
+     
+    // properties of the input data
+    TAudFileProperties iProperties;
+    
+    // a flag to indicate if decoding can take place
+    TBool iReady;
+    
+    // Input buffer for decoder.
+    CMMFDataBuffer* iSourceInputBuffer;
+    
+    // Input buffer for encoder (alternative output buffer for decoder).
+    CMMFDataBuffer* iDestInputBuffer;
+    
+    CMMFDataBuffer* iSampleRateChannelBuffer;
+        
+    // Codec used in decoding input audio to PCM16
+    CMMFCodec* iSourceCodec;
+    
+    // Channel and sample rate converter
+    CRateConverter* iRateConverter;    
+    
+    // Whether audio converter needs to do channel and/or samplerate conversion.
+    TBool iDoSampleRateChannelConversion;
+    
+    // Whether decoding is required (not required if input is WAV)
+    TBool iDoDecoding;
+
+    // Samplerate to convert from.
+    TInt iFromSampleRate;
+    // Samplerate to convert to.
+    TInt iToSampleRate;
+    // Number of channels in input.
+    TInt iFromChannels;
+    // Number of channels in output.
+    TInt iToChannels;
+    
+    // a pointer to store output buffer
+    HBufC8* iDecBuffer;
+   
+    // decimation factor for decoder
+    TInt iDecimFactor;
+
+    
+    };
+
+#endif