Do not play audio properly using MobiFLV open source code.

[SymbianTH]

Hi

I am doing work on 3rd edition MR, FP1 and FP2 and carbide c++ 2.0.

I download MobiFLV open source code and modified that code and now able to play FLV CODEC with audio and video.

But problem is that video played perfectly but audio do not play simultaneously, means video play properly and audio played little bit slow.

Other thing is that this problem happened when i test on real mobile device(N73, E71) but when same application i test on emulator Audio Video both played perfectly.

This is my problem, why this happened?

iAudioOutputStream->SetPriority(80 , EMdaPriorityPreferenceTimeAndQuality);
I read on SDK that SetPriority need "MultimediaDD" capability and this capability is restricted. And I am using Open signed certificate.

Is this a reason for do not play audio properly in real device?

Regards,
SymbianTH

[SymbianTH]

Hi

Please Help me. I am stuck at this point. I searched in google, nokia->wiki also.

Code Details
--------------
Sample Rate: 22050
Channel: 1

void CNeoStreamPlayer::ConstructL()
{
	iAudioOutputStream = CMdaAudioOutputStream::NewL(*this);
	iBufferLump = NULL;

	iMMFCodec = CMMFCodec::NewL(KMMFFourCCCodeMP3, KMMFFourCCCodePCM16);
	iSrcBuf = CMMFDescriptorBuffer::NewL(SRC_SIZE);
	iDstBuf = CMMFDescriptorBuffer::NewL(FRAME_SIZE * MAX_PCM_BUFFER_COUNT * 2);
	
	iOpened = EFalse;
	iVolume = 5;
}

void CNeoStreamPlayer::MaoscOpenComplete(TInt aError)
{
	if (aError == KErrNone)
	{
        iOpened = ETrue;
				iAudioOutputStream->SetAudioPropertiesL(iStreamSettings.iSampleRate, iStreamSettings.iChannels);
        iAudioOutputStream->SetVolume(iAudioOutputStream->MaxVolume() * iVolume / 10);
	} 
}


I set Audio setting  in following way.

iStreamSettings.iSampleRate = TMdaAudioDataSettings::ESampleRate22050Hz;
	if ( aChannels >= 2 )
		iStreamSettings.iChannels = TMdaAudioDataSettings::EChannelsStereo;
	else
		iStreamSettings.iChannels = TMdaAudioDataSettings::EChannelsMono;

	RArray<TInt> configParams;
	
	// Configure codec for 44.1kHz stereo output
	if (aChannels >= 2) //== 2)
		configParams.Append(0); // stereo to mono switch (TRUE(1) or default FALSE(0))
	else
		configParams.Append(1); // stereo to mono switch (TRUE(1) or default FALSE(0))
	
	configParams.Append(0); 
	configParams.Append(1);
	configParams.Append(1); 
	configParams.Append(16); // resolution of PCM samples (default 16 bits)
	configParams.Append(aSampleRate); // here 22050
	TUid codecId = TUid::Uid(KUidMmfCodecAudioSettings);
	TDesC8& codecData = REINTERPRET_CAST(TDesC8&, configParams);
	iMMFCodec->ConfigureL(codecId, codecData); 
	configParams.Close();
	
	iAudioOutputStream->SetPriority(80, EMdaPriorityPreferenceTimeAndQuality);
	iOpened = EFalse;
	iAudioOutputStream->Open(&iStreamSettings);
	iBufferLumpSize = FRAME_SIZE * MAX_PCM_BUFFER_COUNT * 2 * aChannels;
	iBufferLump = (unsigned char*)(User::AllocL(iBufferLumpSize));
	iBufferSize = iBufferLumpSize / MAX_PCM_BUFFER_COUNT;
	for (TInt i = 0; i < MAX_PCM_BUFFER_COUNT; i++)
	{
		TUint8* bufPtr = iBufferLump + (iBufferSize * i);
		User::LeaveIfError(iBuffersArray.Append(TPtr8(bufPtr, 0, iBufferSize)));
		iBufferValid[i] = EFalse;
	}

Regards,
SymbianTH

[SymbianTH]

I solved

SymbianTH