Audio Routing API

[marsiliano]

Hi, I developed an application, that shows a video, i would like to have the audio output routed to the earphones, I have tried in this way:

#ifndef __AUDIOENGINE_H__
#define __AUDIOENGINE_H__


#include <MdaAudioSamplePlayer.h> // for playing audio
#include "AudioOutput.h"
#include "MAudioOutputObserver.h"
#include <QDebug>
#include <mda\\client\\utility.h>
class CMySound : public CBase ,public MMdaAudioPlayerCallback,public MAudioOutputObserver
{

public:
	
	static CMySound* NewL();
	static CMySound* NewLC();
	
	void MapcInitComplete(TInt aError, const TTimeIntervalMicroSeconds& aDuration);
	void MapcPlayComplete(TInt aError);
	
	void PlayL();
	
	void SetRoutingL(CAudioOutput::TAudioOutputPreference& aAudioOutput);
        void SetRoutingLPrivate();
	void DefaultAudioOutputChanged( CAudioOutput& aAudioOutput,
                                        CAudioOutput::TAudioOutputPreference aNewDefault );
	virtual ~CMySound();
	
private:

	CMySound();

	void ConstructL();
	void PlayFile();
	
private:

	CMdaAudioPlayerUtility* iMyAudioPlayerUtility;
	CAudioOutput* iAudioOutput;
	
};

#endif

and

#include "AudioEngine.h"
#include <eikenv.h>
#include <AudioOutput.h>
#include <AknNoteWrappers.h>

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

// Standard construction sequence
CMySound* CMySound::NewL()
    {
   	CMySound* self = CMySound::NewLC();
    CleanupStack::Pop( self );
    return self;
    }

CMySound* CMySound::NewLC()
    {
    CMySound* self = new ( ELeave ) CMySound;
    CleanupStack::PushL( self );
    self->ConstructL();
    return self;
    }
void CMySound::ConstructL()
    {
    iMyAudioPlayerUtility = CMdaAudioPlayerUtility::NewL(*this);
    }

CMySound::CMySound()
	{
	// No implementation required
	}

CMySound::~CMySound()
	{
	if(iMyAudioPlayerUtility)
		{
		delete iMyAudioPlayerUtility;
		iMyAudioPlayerUtility = NULL;
		}
	if(iAudioOutput)
		{
		delete iAudioOutput;
		iAudioOutput = NULL;
		}
	}
//////////////////////////////////////////////////////////////////////
// MClass/Callbacks
//////////////////////////////////////////////////////////////////////

void CMySound::MapcInitComplete(TInt aError, const TTimeIntervalMicroSeconds& /*aDuration*/)
	{
	if(aError == KErrNone)
		{
		iMyAudioPlayerUtility->SetVolume(iMyAudioPlayerUtility->MaxVolume());
		PlayFile();
		}
	}

void CMySound::MapcPlayComplete(TInt aError)
	{
	if(aError == KErrDied)
		{
                qDebug()<<"Player Died";
                //CEikonEnv::InfoWinL(_L("Player died"),_L(""));
		}
	else
		{
                qDebug()<<"Play Completed";
//		CEikonEnv::InfoWinL(_L("Play Completed"),_L(""));
		}
	}

void CMySound::DefaultAudioOutputChanged( CAudioOutput& aAudioOutput,
                                        CAudioOutput::TAudioOutputPreference aNewDefault )
	{
//        CEikonEnv::InfoWinL(_L("In Callback"),_L("AudioOutput Routed"));
        qDebug()<<"OUTPUT CHANGED";
	}

//////////////////////////////////////////////////////////////////////
// Audio functions
//////////////////////////////////////////////////////////////////////
void CMySound::PlayL()
	{
	iMyAudioPlayerUtility->Close();
	iMyAudioPlayerUtility->OpenFileL(_L("C:\\Theme.mp3"));
	}

void CMySound::PlayFile()
	{
	iMyAudioPlayerUtility->Play();
	}


//////////////////////////////////////////////////////////////////////
// Audio Routing
//////////////////////////////////////////////////////////////////////

void CMySound::SetRoutingL(CAudioOutput::TAudioOutputPreference& aAudioOutput)
	{
	if(iAudioOutput)
	{
		delete iAudioOutput;
		iAudioOutput = NULL;
	}
	iAudioOutput = CAudioOutput::NewL(*iMyAudioPlayerUtility);
	iAudioOutput->RegisterObserverL(*this);
	iAudioOutput->SetAudioOutputL(aAudioOutput);
	}


void CMySound::SetRoutingLPrivate()
        {
        if(iAudioOutput)
        {
                delete iAudioOutput;
                iAudioOutput = NULL;
        }
        iAudioOutput = CAudioOutput::NewL(*iMyAudioPlayerUtility);
        iAudioOutput->RegisterObserverL(*this);
        CAudioOutput::TAudioOutputPreference aAudioOutput = CAudioOutput::EPrivate;
        iAudioOutput->SetAudioOutputL(aAudioOutput);
        }

then i put this in my widget:

  CMySound*  sound = CMySound::NewL();
sound->SetRoutingLPrivate();

but it returns me:

[Qt Message] CActiveScheduler::RunIfReady() returned error: -1

What's wrong??
Tnx so much

[vineet.jain]

And you are testing it for which platform/edition?

[marsiliano]

I'm testing it on Symbian^3, Device E7, using Nokia Qt Sdk 1.0.2

[wizard_hu_]

The message is a bit misleading, RunIfReady returns a boolean, true/false. However it also propagates back the error code produced by the active object it was executing. So something is not found (http://wiki.forum.nokia.com/index.php/Error_codes), my bet would go for that file, c:\Theme.mp3 - make sure that it is really installed.

[marsiliano]

This is not the problem also if i comment that line it returns me that error