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 __CAUDPROCESSORIMPL_H__ |
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#define __CAUDPROCESSORIMPL_H__ |
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|
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#include <e32base.h> |
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#include <e32math.h> |
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#include "AudClipInfo.h" |
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#include "AudCommon.h" |
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#include "AudSong.h" |
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#include "ProcInFileHandler.h" |
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#include "ProcFrameHandler.h" |
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#include "ProcWAVFrameHandler.h" |
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#include "ProcTools.h" |
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class MProcClipInfoObserver; |
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class CAudProcessorImpl : public CBase |
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{ |
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public: |
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/* |
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* |
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* Symbian constructors and a destructor |
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* |
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*/ |
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static CAudProcessorImpl* NewL(); |
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static CAudProcessorImpl* NewLC(); |
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virtual ~CAudProcessorImpl(); |
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/** |
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* Performs all initializations needed for a song processing |
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* such as output file opening |
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* |
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* Can leave with one of the system wide error codes |
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* related to memory allocation and file opening |
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* |
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* Possible panic code |
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* <code>ESongProcessingOperationAlreadyRunning</code> |
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* |
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* |
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* |
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* @param aSong song to be processed |
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* @param aRawFrameSize length of raw audio frames |
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* @param aGetTimeEstimation ETrue if getting a time estimation |
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* |
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* @return |
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* |
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*/ |
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void ProcessSongL(const CAudSong* aSong, TInt aRawFrameSize, |
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TBool aGetTimeEstimation = EFalse); |
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/** |
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* Processes one audio frame and writes it to an output file |
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* |
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* Possible panic code |
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* <code>ESongProcessingOperationNotRunning</code> |
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* |
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* @param aProgress output parameter to indicate progress in percents |
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* |
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* |
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* @return ETrue if processing completed, EFalse otherwise |
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* |
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*/ |
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TBool ProcessSyncPieceL(HBufC8*& aFrame, TInt& aProgress, |
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TTimeIntervalMicroSeconds& aDuration, TBool& aRaw); |
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/** |
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* Gets properties of an audio file |
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* |
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* Can leave with one of the error codes related to file opening |
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* |
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* @param aFileName name of the file |
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* @param aFileHandle file handle of the file to read |
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* @param aProperties pointer to audio file properties (needs to be |
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* allocated before calling this function) |
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* |
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*/ |
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void GetAudFilePropertiesL(const TDesC& aFileName, RFile* aFileHandle, |
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TAudFileProperties* aProperties); |
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/** |
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* |
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* Gets time estimate once the time estimate has been calculated |
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* |
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* If time estimation has not been processed, returns 0 |
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* |
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* @return processing time estimate in microseconds |
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*/ |
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TInt64 GetFinalTimeEstimate() const; |
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private: |
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/* |
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* Symbian constructor |
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*/ |
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void ConstructL(); |
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/* |
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* Generates processing events for the output clip |
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*/ |
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void GetProcessingEventsL(); |
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/* |
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* Calculates a gain value on a given time |
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*/ |
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TInt8 GetGainNow(const CAudClip* aClip, TInt32 aTimeMilliSeconds); |
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/* |
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* Stops processing |
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*/ |
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TBool StopProcessing(); |
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/* |
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* Writes one frame of silence |
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*/ |
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TBool WriteSilenceL(HBufC8*& aFrame, TInt& aProgress, |
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TTimeIntervalMicroSeconds& aDuration, TBool& aRaw); |
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/* |
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* Returns the index of the clip with highest priority |
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*/ |
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TBool HighestInFilePriority(TInt& aFirst, TInt& aSecond); |
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/* |
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* Compares the two properties and returns true if decoding is required |
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*/ |
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TBool IsDecodingRequired(const TAudFileProperties& prop1, const TAudFileProperties& prop2); |
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/* |
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* C++ constructor |
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*/ |
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CAudProcessorImpl(); |
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private: |
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// Array for all the input clips |
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RPointerArray<CProcInFileHandler> iInFiles; |
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// Song |
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const CAudSong* iSong; |
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// frame handler for PCM operations such as mixing |
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CProcWAVFrameHandler* iWAVFrameHandler; |
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// time left before the end of last clip |
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// (additional silence may be written after that) |
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TInt32 iTimeLeft; |
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// index of the current processing event |
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TInt iCurEvent; |
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// array for processing events |
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RPointerArray<CProcessingEvent> iProcessingEvents; |
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// array for storing clip indexes that are currenty written |
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RArray<TInt> iClipsWritten; |
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// song duration in milliseconds |
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TInt iSongDurationMilliSeconds; |
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// how much has already been processed |
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TInt iSongProcessedMilliSeconds; |
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// index of the clip that was previously processed |
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TInt iLastInClip1; |
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// a flag to indicate if we are getting a processing time estimate |
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TBool iGetTimeEstimation; |
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// timer for calculating time estimation |
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TTime iTimer; |
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// a variable for time estimate |
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TInt64 iTimeEstimate; |
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// a variable for time estimate calculation |
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TReal iTimeEstimateCoefficient; |
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TBool iSilenceStarted; |
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}; |
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#endif |