mmfenh/advancedaudiocontroller/audiocontrollerpluginsvariant/mp3audioplaycontroller/Src/MP3AudioPlayControllerHwDecoder.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 02 Sep 2010 20:58:01 +0300
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parent 22 128eb6a32b84
permissions -rw-r--r--
Revision: 201033 Kit: 201035
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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:  The functions in this module implements the specific behavior
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*                for the advanced audio converter class for configuration of
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*				 hardware accelerated codec.
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*
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*/
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// INCLUDE FILES
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#include "MP3AudioPlayControllerDecoder.h"
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#include "DebugMacros.h"
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#include <mmfpaniccodes.h>
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#include <mmfcodec.h>
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const TUint KRawMp3MaxFrameSize  = 1441;
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const TUint KSizeOfInBuffer   = 2*KRawMp3MaxFrameSize;
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const TInt 	KRawMp3FrameHeaderSize = 5;
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class TAudioFrameInfo
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    {
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	public:
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		TInt iMode;            // encoding mode
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		TInt iBitRate;         // bitrate (bit/s)
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		TInt iSamplingRate;    // sampling frequency (Hz)
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		TInt iChannels;        // number of channels
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		TInt iFrameSize;       // encoded size (bytes)
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		TInt iFrameSamples;    // samples per frame
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		TInt iSamplingRateOut; // sampling frequency after conversion (Hz)
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		TInt iChannelsOut;     // number of audio channels after conversion (1 or 2)
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		TInt iFrameSamplesOut; // decoded size after conversion (samples per frame)
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		TInt iPadding;         // padding flag (TRUE or FALSE, TRUE if p slot exists)
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		TInt iId;              // id of algorithm (1 MPEG-1, 0 MPEG-2)
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    };
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// Bit rates in bits/sec supported by MPEG2, MPEG1 and MPEG2.5 respectively
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const TInt16 cBitRateTable[3][16] =
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	{
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		{-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,0},
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		{-1,32,40,48,56,64,80,96,112,128,160,192,224,256,320,0},
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		{-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,0},
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	};
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// Sampling frequencies supported by MPEG2, MPEG1 and MPEG2.5 respectively
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const TUint16 cSamplingFrequencyTable[3][4] =
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	{
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		{22050,24000,16000,0},
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		{44100,48000,32000,0},
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		{11025,12000,8000,0},
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	};
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CMP3AudioPlayControllerDecoder::CMP3AudioPlayControllerDecoder()
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    :   CAdvancedAudioDecoder(CActive::EPriorityStandard)
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    {
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    DP0(_L("CMP3AudioPlayControllerDecoder::CMP3AudioPlayControllerDecoder - Hardware Accelerated"));
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    iMaxFrameSize = KRawMp3MaxFrameSize;
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   	iSizeOfInBuffer = KSizeOfInBuffer;
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    }
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// -----------------------------------------------------------------------------
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// CMP3AudioPlayControllerDecoder::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CMP3AudioPlayControllerDecoder::ConstructL()
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    {
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    DP1(_L("CMP3AudioPlayControllerDecoder::ConstructL"), this);
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    iFrameTable = CFrameTable::NewL();
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	RenderEnable();
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	UnMarkPlayEnd();
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	Enable();
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    CActiveScheduler::Add(this);
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    }
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// -----------------------------------------------------------------------------
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CMP3AudioPlayControllerDecoder* CMP3AudioPlayControllerDecoder::NewL()
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    {
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    DP0(_L("CMP3AudioPlayControllerDecoder::NewL"));
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    CMP3AudioPlayControllerDecoder* self = new(ELeave) CMP3AudioPlayControllerDecoder();
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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diff changeset
   112
// Destructor
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   113
CMP3AudioPlayControllerDecoder::~CMP3AudioPlayControllerDecoder()
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   114
	{
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   115
    DP0(_L("CMP3AudioPlayControllerDecoder::~CMP3AudioPlayControllerDecoder"));
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   116
    delete iFrameTable;
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   117
	}
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   118
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   119
TInt CMP3AudioPlayControllerDecoder::CodecConfig(RArray<TInt>& aConfigData)
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   120
	{
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   121
	TInt status = KErrNone;
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   122
	TInt sampFreq = ((RArray<TInt>&) aConfigData)[5];
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   123
	TInt samplesPerFrame = ((RArray<TInt>&) aConfigData)[8];
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   124
	iFrameTable->InitFrameTable(sampFreq, samplesPerFrame);
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   125
	return status;
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   126
	}
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   127
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   128
// -----------------------------------------------------------------------------
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   129
// CMP3AudioPlayControllerDecoder::ResetL
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   130
// Resets configuration data and configures the codec.
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   131
// -----------------------------------------------------------------------------
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   132
//
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   133
void CMP3AudioPlayControllerDecoder::ResetL()
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   134
	{
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   135
    DP0(_L ("CMP3AudioPlayControllerDecoder::Reset - Enter"));
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   136
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   137
	delete[] iOutBuffer;
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   138
   	delete[] iInBuffer;
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   139
   	
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   140
   	iInBuffer = NULL;
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   141
   	iOutBuffer = NULL;
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   142
   	iInBufferCount = 0;
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   143
   	iOutBufferCount = 0;
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   144
   	iOutBufferPtr = NULL;
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   145
   	iOutFrameLength = KRawMp3MaxFrameSize; // since data is not decoded
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   146
   	iInBuffer = new (ELeave) TUint8[KSizeOfInBuffer];
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diff changeset
   147
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   148
    iOutBuffer = new (ELeave) TUint8[iOutFrameLength];
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   149
    iOutBufferPtr = iOutBuffer;
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   150
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   151
    iAccLen = 0;
12
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parents: 0
diff changeset
   152
0
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   153
    DP0(_L ("CMP3AudioPlayControllerDecoder::Reset - Exit"));
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   154
	}
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   155
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   156
TCodecProcessResult CMP3AudioPlayControllerDecoder::ProcessL(CMMFBuffer& aSrc, CMMFBuffer& aDst)
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   157
	{
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   158
    DP0(_L ("CMP3AudioPlayControllerDecoder::ProcessL"));
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   159
	return CAdvancedAudioDecoder::ProcessHwL(aSrc, aDst);
71ca22bcf22a Revision: 201003
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   160
	}
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parents:
diff changeset
   161
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   162
TInt CMP3AudioPlayControllerDecoder::FrameLength(const TUint8* aBuf, TInt aBufLen, TInt& aFrameLength)
71ca22bcf22a Revision: 201003
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   163
	{
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   164
	TInt stat = KErrNone;
71ca22bcf22a Revision: 201003
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   165
	TAudioFrameInfo info;
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   166
	TInt len = FrameInfo(aBuf, aBufLen, info);
71ca22bcf22a Revision: 201003
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   167
	if (len > 0)
71ca22bcf22a Revision: 201003
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   168
		{
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   169
		aFrameLength = len;
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   170
		}
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   171
	else
71ca22bcf22a Revision: 201003
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   172
		{
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   173
		stat = KErrUnknown;
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   174
		}
71ca22bcf22a Revision: 201003
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   175
	return stat;
71ca22bcf22a Revision: 201003
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   176
	}
71ca22bcf22a Revision: 201003
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diff changeset
   177
	
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   178
// -----------------------------------------------------------------------------
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   179
// CMP3AudioPlayControllerDecoder::FrameInfo
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   180
// -----------------------------------------------------------------------------
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   181
//
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   182
TInt CMP3AudioPlayControllerDecoder::FrameInfo(
71ca22bcf22a Revision: 201003
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   183
	const TUint8* aBuf,
71ca22bcf22a Revision: 201003
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diff changeset
   184
	TInt aBufLen,
71ca22bcf22a Revision: 201003
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diff changeset
   185
	TAudioFrameInfo& aInfo)
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   186
    {
71ca22bcf22a Revision: 201003
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diff changeset
   187
    TInt length = 0;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff changeset
   188
    TUint temp;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   189
    TUint lTempVal;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   190
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff changeset
   191
	if (aBufLen >= KRawMp3FrameHeaderSize)
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   192
	    {
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diff changeset
   193
		// Extract header fields to aInfo and check their bit syntax
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   194
		// (including the sync word!). If the syntax is not OK the length
71ca22bcf22a Revision: 201003
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diff changeset
   195
		// is set to zero.
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   196
71ca22bcf22a Revision: 201003
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diff changeset
   197
		temp = 0;
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   198
		temp = aBuf[0] << 24;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   199
		temp |= (aBuf[1] << 16);
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parents:
diff changeset
   200
		temp |= (aBuf[2] << 8);
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   201
		temp |= aBuf[3];
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   202
		if (((temp >> 21) & 0x7FF) != 0x7FF)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   203
			{
71ca22bcf22a Revision: 201003
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diff changeset
   204
			return length;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   205
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   206
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   207
		lTempVal = (temp >> 19) & 0x03;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   208
		switch (lTempVal)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   209
			{
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   210
			case 0:
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   211
				aInfo.iId = 2;  // MPEG2.5
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   212
				aInfo.iFrameSamples = 576;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   213
				break;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   214
			case 1:
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   215
				return length;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   216
			case 2:
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   217
				aInfo.iId = 0;  // MPEG 2
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   218
				aInfo.iFrameSamples = 576;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   219
				break;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   220
			case 3:
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   221
				aInfo.iId = 1;  // MPEG 1
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   222
				aInfo.iFrameSamples = 1152;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   223
				break;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   224
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   225
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   226
		lTempVal = (temp >> 17) & 0x03;
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   227
		if (lTempVal != 1)
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parents:
diff changeset
   228
			{
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parents:
diff changeset
   229
			return length;
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   230
			}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   231
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parents:
diff changeset
   232
		lTempVal = (temp >> 12) & 0x0F;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   233
		aInfo.iBitRate = cBitRateTable[aInfo.iId][lTempVal]*1000;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   234
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   235
		if (aInfo.iBitRate == 0)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   236
			{
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   237
			return length;
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   238
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   239
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   240
		lTempVal = (temp >> 10) & 0x03;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   241
		if (lTempVal == 3)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   242
			{
71ca22bcf22a Revision: 201003
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parents:
diff changeset
   243
			return length;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   244
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   245
		else
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   246
			{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   247
			aInfo.iSamplingRate = cSamplingFrequencyTable[aInfo.iId][lTempVal];
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   248
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   249
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   250
		aInfo.iPadding = (temp >> 9) & 0x01;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   251
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   252
		lTempVal = (temp >> 6) & 0x03;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   253
		aInfo.iMode = lTempVal;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   254
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   255
		if (lTempVal == 3)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   256
			{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   257
			aInfo.iChannels = 1;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   258
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   259
		else
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   260
            {
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   261
            aInfo.iChannels = 2;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   262
            }
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   263
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   264
        aInfo.iSamplingRateOut = aInfo.iSamplingRate;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   265
        aInfo.iChannelsOut = 2; /* always set to stereo output */
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   266
        aInfo.iFrameSamplesOut = aInfo.iFrameSamples;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   267
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   268
		if (aInfo.iBitRate == -1)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   269
			{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   270
			// For free mode operation
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   271
			length = KRawMp3MaxFrameSize;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   272
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   273
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   274
		if (aInfo.iSamplingRate > 0  &&  aInfo.iBitRate > 0)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   275
			{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   276
			length = (144*aInfo.iBitRate)/aInfo.iSamplingRate;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   277
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   278
			if (aInfo.iId != 1)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   279
				{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   280
				length >>= 1; /*for MPEG2 and MPEG2.5 */
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   281
				}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   282
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   283
			if (aInfo.iPadding)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   284
				{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   285
				length++;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   286
				}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   287
			}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   288
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   289
		aInfo.iFrameSize = length;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   290
//        iChannelsOut = aInfo.iChannelsOut;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   291
    	}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   292
    return length;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   293
    }
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   294
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   295
// -----------------------------------------------------------------------------
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   296
// CMP3AudioPlayControllerDecoder::SeekSync
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   297
// -----------------------------------------------------------------------------
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   298
TInt CMP3AudioPlayControllerDecoder::SeekSync(TUint8* aBuf, TInt aBufLen)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   299
    {
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   300
    const TInt KMaxFrames = 3;          // number of frames to check
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   301
    const TInt KNotFound = aBufLen;     // sync not found position
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   302
    TAudioFrameInfo frameInfo;           // frame parameters
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   303
    TInt i = 0;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   304
    TInt syncPos = KNotFound;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   305
    TInt maxSeek = KMaxFrames;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   306
    const TUint8* endPtr = aBuf+aBufLen;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   307
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   308
    // Seek a valid frame candidate byte by byte until a valid frame
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   309
    // is found or all bytes have been checked.
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   310
    while (aBuf < endPtr  &&  syncPos == KNotFound)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   311
	    {
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   312
        TInt seekCount = 0;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   313
        const TUint8* framePtr = aBuf;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   314
        TInt frameBufLen = aBufLen;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   315
        syncPos = i;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   316
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   317
		// Check the validity of this frame candidate and the nearest next
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   318
        // frames. If they are not OK, syncPos will be set to KNotFound.
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   319
        while (framePtr < endPtr  &&  syncPos != KNotFound  && seekCount < maxSeek)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   320
	        {
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   321
            TInt length = FrameInfo(framePtr, frameBufLen, frameInfo);
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   322
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   323
			if (length == 0)
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   324
            	{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   325
                syncPos = KNotFound;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   326
				}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   327
            if ((length > 0) && (frameInfo.iBitRate < 0))
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   328
            	{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   329
                maxSeek = 1; // free formatcase
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   330
				}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   331
            framePtr += length;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   332
            frameBufLen -= length;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   333
            seekCount++;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   334
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   335
			// consider SYNC not found if we reach end of buffer before finding 3 SYNC frames
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   336
			if ((framePtr >= endPtr) && (seekCount < maxSeek))
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   337
				{
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
				syncPos = KNotFound;
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
				aBuf += (aBufLen-1);      // force an exit from while loop
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
				}
71ca22bcf22a Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
        	}
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        aBuf++; aBufLen--; i++;
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    	}
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    return syncPos;
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    }
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   346
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   347
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// -----------------------------------------------------------------------------
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// CMP3AudioPlayControllerDecoder::IsHwAccelerated
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// Always return true when no soft codec is used.
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// -----------------------------------------------------------------------------
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//
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TBool CMP3AudioPlayControllerDecoder::IsHwAccelerated()
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	{
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	return ETrue;
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	}
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   357
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TInt CMP3AudioPlayControllerDecoder::CodecCmd(TCodecCmd /*aCmd*/)
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	{
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	return KErrNotSupported;
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	}
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   362
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   363
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// End of file