diff -r 951a5db380a0 -r d87d32eab1a9 videoeditorengine/audioeditorengine/inc/ProcFrameHandler.h --- a/videoeditorengine/audioeditorengine/inc/ProcFrameHandler.h Fri Jan 29 14:08:33 2010 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,98 +0,0 @@ -/* -* 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 __CPROCFRAMEHANDLER_H__ -#define __CPROCFRAMEHANDLER_H__ - -#include -#include "AudCommon.h" -#include "ProcConstants.h" - -class CProcFrameHandler : public CBase - { - -public: - - - /** - * Manipulates the gain of a certain audio frame - * - * @param aFrameIn a frame to be modified - * @param aFrameOut a modified frame, the caller is responsible for releasing! - * @param aGain gain change. One step represents 0.5 dB, so that - * 0->no change, 10 -> +5dB and -10 -> -5dB - * @return ETrue if successful - * - * - */ - virtual TBool ManipulateGainL(const HBufC8* aFrameIn, HBufC8*& aFrameOut, TInt8 aGain) = 0; - - /** - * Retrieves the gains of a certain audio frame - * - * @param aFrame an audio frame - * @param aGains retrieved gains - * @param aMaxGain the biggest possible gain value - * @return ETrue if successful - * - * - */ - virtual TBool GetGainL(const HBufC8* aFrame, RArray& aGains, TInt& aMaxGain) const = 0; - - /** - * Calculates how many decibels this frame can be amplified - * - * @param aFrame an audio frame - * @param aMargin margin in debicels/2 -> 4 equals 2 decibels - */ - virtual TBool GetNormalizingMargin(const HBufC8* aFrame, TInt8& aMargin) const = 0; - - /** - * Tells whether mixing is available or not - * - * @return ETrue mixing is available - * @return EFalse mixing is not available - */ - virtual TBool IsMixingAvailable() const; - - /** - * Mixes two frames with each other - * - * @param aFrame1 frame 1 to be mixed - * @param aFrame2 frame 2 to be mixed - * @param aMixedFrame resulting mixed frame - * - * @return ETrue if mixing was successful. The caller is responsible for releasing memory - * EFalse if mixing was not successful. aMixedFrame = 0 and the caller - * doesn't need to release memory - */ - virtual TBool MixL(const HBufC8* aFrame1, const HBufC8* aFrame2, HBufC8*& aMixedFrame); - - - virtual ~CProcFrameHandler(); - -private: - -protected: - - - }; - -#endif