author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 12 Mar 2010 15:45:41 +0200 | |
branch | RCL_3 |
changeset 7 | 709f89d8c047 |
parent 0 | 71ca22bcf22a |
child 41 | a36789189b53 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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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 "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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* |
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* Description: Definition of Advance Audio Decoder base class. |
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* |
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*/ |
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#ifndef CADVANCEDAUDIODECODER_H |
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#define CADVANCEDAUDIODECODER_H |
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// INCLUDES |
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#include "AdvancedAudioHelper.h" // for MAdvancedAudioDecoderUtilityObserver |
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#include <FrameTable.h> // for CFrameTable |
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#include <e32base.h> |
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#include <sounddevice.h> |
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#include <mmfcodecimplementationuids.hrh> |
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#include <mmfcodec.h> |
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#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS |
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#include <mmf/common/mmfhelper.h> |
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#endif |
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// CONSTANTS |
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const TUid KUidConfig = {KUidMmfCodecAudioSettings}; |
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const TInt KErrBufferNotReady = -1000; // standard error on NextSharedBufferL called and the desire buffer is not EFull |
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// FORWARD DECLARATIONS |
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class CMMFBuffer; |
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class CMMFDataBuffer; |
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class CMMFCodec; |
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// CLASS DECLARATION |
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class TMMFPtr8 : public TPtr8 |
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{ |
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public: |
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TMMFPtr8() |
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: TPtr8(0,0,0) {}; |
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inline void Set(const TDes8& aDes) |
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{ TPtr8::Set((TUint8*)(aDes.Ptr()),aDes.Length(),aDes.MaxLength()); }; |
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inline void SetLengthOnly(const TDes8& aDes) |
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{ TPtr8::Set((TUint8*)(aDes.Ptr()),aDes.Length(),aDes.Length()); }; |
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inline void Set(const TPtrC8& aDes) |
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{ TPtr8::Set((TUint8*)(aDes.Ptr()),aDes.Length(),aDes.Length()); }; |
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inline void Shift(TInt aOffset) |
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{ SetLength(Length()-aOffset); iMaxLength-=aOffset; iPtr+=aOffset; }; |
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}; |
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/** |
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* Mixin observer class to define an object capable of handling a callback from |
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* CAdvancedAudioDecoder objects |
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* |
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* @lib AdvancedAudioController.lib |
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* @since 3.0 |
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*/ |
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class MAdvancedAudioDecoderObserver |
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{ |
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public: |
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/** |
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* Callback function from CAdvancedAudioDecoder when the specified buffer |
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* has been filled. |
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* @param aFilledBuffer data buffer filled with converted data |
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* @return - |
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*/ |
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virtual void BufferFilled(CMMFBuffer* aFilledBuffer) = 0; |
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/** |
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* Callback function from CAdvancedAudioDecoder when the specified buffer |
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* needs to be refilled. This indicates a shared buffer is to be refilled. |
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* @param aEmptyBuffer an empty buffer to be refilled |
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* @return - |
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*/ |
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virtual void RefillBuffer(CMMFBuffer* aEmptyBuffer) = 0; |
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/** |
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* Callback function from CAdvancedAudioDecoder when the specified buffer |
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* needs to be refilled. This indicates a shared buffer is to be refilled. |
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* @param aEmptyBuffer an empty buffer to be refilled |
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* @param aDoSynchronousRead if the operation should be perform Synchronuously |
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* @return - |
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*/ |
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//virtual void RefillBuffer(CMMFBuffer* aEmptyBuffer, TBool aDoSynchronousRead) = 0; |
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/** |
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* Callback function from CAdvancedAudioDecoder to handle specified event |
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* @param aEvent the event to be handled |
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* @return void |
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*/ |
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virtual void SendEvent(const TMMFEvent& aEvent) = 0; |
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}; |
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/** |
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* This is the base class for all audio converter classes. |
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* It contains common behaviour for all audio decoders. The audio decoder class |
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* provides the interface to audio decoders. |
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* |
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* @lib AdvancedAudioController.lib |
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* @since 3.0 |
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*/ |
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class CAdvancedAudioDecoder : public CActive, public MFrameTableEventObserver |
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{ |
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protected: |
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enum TCodecCmd |
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{ |
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ERenderDisable, |
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ERenderEnable, |
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EDisable, |
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EEnable, |
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EMarkPlayEnd, |
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EUnMarkPlayEnd |
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}; |
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|
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public: |
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/** |
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* Destructor. |
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*/ |
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IMPORT_C virtual ~CAdvancedAudioDecoder(); |
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|
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protected: |
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|
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/** |
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* C++ default constructor. |
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*/ |
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IMPORT_C CAdvancedAudioDecoder(TInt aPriority); |
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|
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public: // New functions |
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|
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/** |
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* Sets the DevSound instance to be used by the audio decoder. |
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* @since 3.0 |
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* @param aDevSound Devsound instance |
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* @return void |
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*/ |
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IMPORT_C virtual void SetDevSound(CMMFDevSound& aDevSound); |
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|
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/** |
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* Sets the observer object that will handle callbacks |
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* @since 3.0 |
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* @param aObserver Observer object that will handle callbacks |
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* @return void |
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*/ |
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IMPORT_C virtual void SetObserver(MAdvancedAudioDecoderObserver& aObserver); |
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|
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/** |
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* Sets the DecoderUtilityObserver object that will handle callbacks |
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* @since 3.0 |
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* @param aDecoderUtilityObserver DecoderUtilityObserver object that will handle callbacks |
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* @return void |
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*/ |
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IMPORT_C virtual void SetDecoderUtilityObserver(MAdvancedAudioDecoderUtilityObserver& aDecoderUtilityObserver); |
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|
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/** |
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* Sets the source buffer for decoding operations. |
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* @since 3.0 |
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* @param aBuffers Pointer to shared buffers. |
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* @return void |
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*/ |
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IMPORT_C virtual void SetSourceBuffers(RPointerArray<CMMFDataBuffer>* aBuffers); |
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|
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/** |
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* Sets audio decoder settings and attributes. |
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* @since 3.0 |
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* @param aSampleRate a source sampling rate |
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* @param aNumChannel required number of channels (mono/stereo indication) |
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* @param aSWConvertSampleRate a sampling rate after conversion |
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* @param aSWConvertChannels number of channels after conversion |
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* @param aCodecConfigData specific codec configuration data |
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* @param aIndex specify the index in iSharedBuffers |
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* |
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* @return void |
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*/ |
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IMPORT_C virtual void SetConfigL(TUint aSampleRate, TUint aChannels, |
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TUint aSWConvertSampleRate, TUint aSWConvertChannels, |
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const RArray<TInt>& aCodecConfigData, TInt aIndex); |
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|
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|
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/** |
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* Provides the audio converter a buffer to fill with decoded data. |
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* @since 3.0 |
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* @param aBuffer a data buffer to be filled with decoded data |
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* @return - |
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*/ |
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IMPORT_C virtual void FillBufferL(CMMFBuffer* aBuffer); |
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|
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/** |
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* Resets audio decoder settings and attributes. |
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* @since 3.0 |
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* @return void |
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*/ |
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IMPORT_C virtual void ResetL(); |
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|
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/** |
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* Check if the audio converter is hardware accelerated. |
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* @since 3.0 |
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* @return ETrue if hardare accelerated, otherwise, EFalse. |
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*/ |
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IMPORT_C virtual TBool IsHwAccelerated(); |
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|
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/** |
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* Stops decoding process. |
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* @since 3.0 |
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* @param none |
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* @return void |
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*/ |
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IMPORT_C virtual void Stop(); |
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|
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/** |
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* Set source reference offset in frametable |
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* added to support AAC optimization |
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* @since 3.2 |
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* @param aOffset offset of the source position |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt SetSourceReference(TUint aTimeMs, TUint aPos); |
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|
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/** |
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* Find the closest Frame's position from a given time (millisec) in frametable |
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* added to support AAC optimization |
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* @since 3.2 |
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* @param aTimeMs Time to search from in millisec |
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* @param aPos Bytes Position found in frametable if return is KErrNone |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt FindFramePosFromTime(TUint& aTimeMs, TUint& aPos); |
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|
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IMPORT_C virtual TInt FindFrameTimeFromPos(TUint& aTimeMs, TUint& aPos); |
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|
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/** |
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* Find the last record Frame's position in frametable |
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* added to support AAC optimization |
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* @since 3.2 |
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* @param aPos Bytes Position found in frametable if return is KErrNone |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt LastFramePos(TUint& aPos); |
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|
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/* |
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* Find the last Frame's position relative time (millisec) in frametable |
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* added to support AAC optimization |
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* @since 3.2 |
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* @param aTimeMs Time of the last Frame in millisec if return is KErrNone |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt LastFrameTime(TUint& aTimeMs); |
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|
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/* |
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* Reset the frame table |
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* added to support AAC optimization |
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* @since 3.2 |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt ResetTable(); |
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/** |
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* Cause FrameTable to generate an event when the desire Position is recorded in FrameTable |
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* added to support AAC optimization |
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* @since 3.2 |
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* @param aTimeMs Time to be Seek to when callback occurs in millisec |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt SeekToTimeMs(TUint aTimeMs); |
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IMPORT_C virtual TInt SetPlayWindowEndTimeMs(TUint aTimeMs); |
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/** |
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* Get the average bitrate inside the FrameTable |
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* added to support AAC optimization |
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* @since 3.2 |
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* return TInt averate bitrate at the moment |
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*/ |
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IMPORT_C virtual TInt BitRate(); |
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|
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/** |
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* Cause FrameTable to generate an event when desire interval of data has been decoded |
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* added to support AAC optimization |
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* @since 3.2 |
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* @param aEnable Enable/Disable the event |
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* @param aTimeMs Time of the desire interval in millisec |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt EnableDecodeIntervalEvent(TBool aEnable, TUint aTimeMs = 0); |
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|
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IMPORT_C virtual void RenderDisable(); |
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IMPORT_C virtual void RenderEnable(); |
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|
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IMPORT_C virtual void QueueThisBuffer(TUint aBufferIndex); |
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|
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public: // from MFrameTableEventObserver |
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/** |
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* Callback from FrameTable when event occur |
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* added to support AAC optimization |
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* @since 3.2 |
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* @param CFrameTable::TFrameTableEvent |
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* event from FrameTable |
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* return TInt standard system error |
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*/ |
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IMPORT_C virtual TInt HandleFrameTableEvent(CFrameTable::TFrameTableEvent aEvent); |
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// IMPORT_C virtual TInt IsSeeking(TBool& aIsSeeking); |
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|
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protected: // New functions |
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|
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/** |
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* Handle filling the requested buffer received in FillBufferL() |
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* @param none |
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* @return void |
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*/ |
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IMPORT_C virtual void HandleFillBufferL(); |
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IMPORT_C virtual TCodecProcessResult ProcessL(CMMFBuffer& aSrc, CMMFBuffer& aDst); |
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IMPORT_C virtual TInt CodecCmd(TCodecCmd aCmd); |
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IMPORT_C virtual TInt CodecConfig(RArray<TInt>& aCodecConfigData); |
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// IMPORT_C void RenderDisable(); |
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// IMPORT_C void RenderEnable(); |
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IMPORT_C void MarkPlayEnd(); |
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IMPORT_C void UnMarkPlayEnd(); |
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IMPORT_C void Disable(); |
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IMPORT_C void Enable(); |
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327 |
|
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IMPORT_C virtual TCodecProcessResult ProcessHwL(CMMFBuffer& aSrc, CMMFBuffer& aDst); |
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IMPORT_C virtual void ProcessParseL(TMMFPtr8* aSrc, TMMFPtr8* aDst); |
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IMPORT_C virtual TUint8* PrepareInFrame(TUint8* aSrc, TInt aSrcLen, TInt& aSrcUsed); |
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IMPORT_C virtual void ParseL(TUint8* aSrc, TInt& aSrcUsed, TUint8* aDst, TInt& aDstLen); |
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virtual TInt SeekSync(TUint8* aBuf, TInt aBufLen); |
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virtual TInt FrameLength(const TUint8* aBuf, TInt aBufLen, TInt& aFrameLength); |
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334 |
|
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private: |
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/** |
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* Completes own request. |
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*/ |
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void Ready(TInt aRequest); |
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void NextSharedBufferL(); |
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|
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protected: // Functions from base classes |
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|
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/** |
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* From CActive |
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*/ |
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IMPORT_C virtual void RunL(); |
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348 |
|
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/** |
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* From CActive |
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*/ |
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IMPORT_C virtual void DoCancel(); |
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353 |
|
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protected: // Data |
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355 |
|
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enum TAudioDecoderState |
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{ |
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EIdle, |
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EDecoding |
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}; |
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361 |
|
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enum TNextEvent |
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{ |
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EDoNothing, |
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ERefillBuffer, |
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EPlayEnd |
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}; |
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368 |
|
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// Decoder state |
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TAudioDecoderState iState; |
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371 |
|
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// array of shared buffers |
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RPointerArray<CMMFDataBuffer>* iSharedBuffers; |
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// next available buffer index |
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TInt iSharedBufferIndex; |
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376 |
|
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// audio buffer to fill pointer |
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CMMFBuffer* iBufferToFill; |
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// audio buffer to empty pointer |
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CMMFBuffer* iBufferToEmpty; |
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// next available buffer pointer |
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CMMFBuffer* iNextBuffer; |
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383 |
|
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// DevSound pointer |
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CMMFDevSound* iMMFDevSound; |
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386 |
|
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// Audio Converter observer |
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MAdvancedAudioDecoderObserver* iObserver; |
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MAdvancedAudioDecoderUtilityObserver* iDecoderUtilityObserver; // the Utility object as Observer to Decoder event |
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390 |
|
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CFrameTable* iFrameTable; // FrameTable that record decoded frame position, added for AAC optimization |
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392 |
|
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TBool iRenderEnabled; // indicate whether audio buffer should be given to DevSound, added for AAC optimization |
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TBool iEnabled; // indicates if decoding in codec is enabled |
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TBool iMarkPlayEnd; |
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TUint iSeekToTimeMs; |
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397 |
|
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// soft codec pointer if soft codec is used |
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CMMFCodec* iSoftCodec; |
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400 |
|
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// True if sampling rate conversion is required |
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TBool iNeedsSWConversion; |
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// Sample rate to convert to |
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TUint iSWConvertSampleRate; |
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// Number of channels to convert to |
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TUint iSWConvertChannels; |
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407 |
|
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// sample rate converter factory pointer |
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CMMFChannelAndSampleRateConverterFactory* iChannelAndSampleRateConverterFactory; |
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// sample rate converter pointer |
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CMMFChannelAndSampleRateConverter* iChannelAndSampleRateConverter; |
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412 |
|
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// converter buffer pointer |
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CMMFDataBuffer* iConvertBuffer; |
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TUint iEventPos; |
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416 |
|
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417 |
|
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RArray<TInt> iRenderEnableConfig; |
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RArray<TInt> iRenderDisableConfig; |
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RArray<TInt> iMarkPlayEndConfig; |
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RArray<TInt> iUnMarkPlayEndConfig; |
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RArray<TInt> iEnableConfig; |
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RArray<TInt> iDisableConfig; |
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|
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// below are for the hw decoding and could be moved to another header file |
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// local input buffer |
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TUint8* iInBuffer; |
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TInt iInBufferCount; |
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TInt iInBufferIndx; |
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TInt iSavedBytesCopiedFromSrc; |
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TBool iInBufferFilled; |
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TUint iAccLen; |
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TInt iUsedInBuffer; |
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|
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// local output buffer |
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TUint8* iOutBuffer; |
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TInt iOutBufferCount; |
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TInt iOutBufferLength; |
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|
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TUint8* iOutBufferPtr; |
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TInt iOutFrameLength; |
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|
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const CMMFDataBuffer* iSrc; |
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CMMFDataBuffer* iDst; |
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|
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TInt iMaxFrameSize; |
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TInt iSizeOfInBuffer; |
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|
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}; |
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|
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#endif // CADVANCEDAUDIODECODER_H |