author | Mikael Laine <mikael.laine@ixonos.com> |
Fri, 29 Jan 2010 14:08:33 +0200 | |
changeset 0 | 951a5db380a0 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Ixonos Plc. |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - Initial contribution |
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* |
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* Contributors: |
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* Ixonos Plc |
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* |
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* Description: |
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* |
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*/ |
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#ifndef __CPROCAACFRAMEHANDLER_H__ |
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#define __CPROCAACFRAMEHANDLER_H__ |
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#include <e32base.h> |
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#include "AudCommon.h" |
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#include "ProcConstants.h" |
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#include "ProcFrameHandler.h" |
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#include "AACConstants.h" |
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#include "AACAPI.h" |
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class CProcAACFrameHandler : public CProcFrameHandler |
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{ |
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public: |
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// aGain -40(dB) - +20(dB) |
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virtual TBool ManipulateGainL(const HBufC8* aFrameIn, HBufC8*& aFrameOut, TInt8 aGain); |
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// From base class |
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virtual TBool GetGainL(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain) const; |
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virtual TBool GetNormalizingMargin(const HBufC8* aFrame, TInt8& aMargin) const; |
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virtual ~CProcAACFrameHandler(); |
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static CProcAACFrameHandler* NewL(TAACFrameHandlerInfo aAACInfo); |
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static CProcAACFrameHandler* NewLC(TAACFrameHandlerInfo aAACInfo); |
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/* |
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* |
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* If there are several AAC frames in a row, their start positions and |
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* lengths can be parsed with this function |
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* |
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* @param aFrame input frame to be parsed |
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* @param aFrameStarts starting locations of each frame |
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* @param aFrameLengths frame lengths of each frame |
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*/ |
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TBool ParseFramesL(HBufC8* aFrame, RArray<TInt>& aFrameStarts, RArray<TInt>& aFrameLengths); |
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/* |
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* GetEnhancedAACPlusParametersL |
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* |
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* Fills in aacPlus related fields in aProperties |
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* |
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* |
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* @param buf audio data |
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* @param bufLen lenght of "buf" |
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* @param aProperties properties to fill in |
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* @param aAACInfo info for AAC framehandler |
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* |
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*/ |
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static void GetEnhancedAACPlusParametersL(TUint8* buf, TInt bufLen, |
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TAudFileProperties* aProperties, |
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TAACFrameHandlerInfo *aAACInfo); |
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/* |
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* CalculateNumberOfHeaderBytes returns the number of ADTS header bytes |
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* and the number of data blocks in a given frame |
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* |
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* @param aFrame input frame |
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* @param aNumBlocks (output) number of data blocks in the frame (usually 1) |
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* |
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* @return the number of ADTS header bytes |
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*/ |
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TInt CalculateNumberOfHeaderBytes(const HBufC8* aFrame, TInt& aNumBlocksInFrame) const; |
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private: |
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// constructL |
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void ConstructL(TAACFrameHandlerInfo aAACInfo); |
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// c++ constructor |
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CProcAACFrameHandler(); |
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// updates the ADTS header if the lenght has |
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// been changed after modifying AACPlus gain |
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TBool UpdateHeaderL(HBufC8* aFrame); |
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private: |
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// AAC decoder handle |
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CAACAudDec* iDecHandle; |
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// stores the starting points of raw data blocks if there are |
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// more than one data block in AAC frame |
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RArray<TInt> iFrameStarts; |
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// lenghts of the data blocks |
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RArray<TInt> iFrameLengths; |
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// info needed for AAC decoder handle creation |
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TAACFrameHandlerInfo iAACInfo; |
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Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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}; |
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Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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#endif |