PlayUtility and Undefined symbol

[lykurg]

Hi,

this is a very dump question I know, but I struggle. I use PlayUtility.cpp and PlayUtility.h from the wiki page "Playing audio files" in my Qt-garden project. In the main function I call for testing purpose: CPlayerUtility *p = CPlayerUtility::NewL(_L("E:\\play.wav")); While compilation I get the error:

mwldsym2.exe: warning: Multiply defined symbol: __InitializeThreadDataIndex in
mwldsym2.exe: warning: files uc_cwhelp.obj (EEXE.LIB), ThreadLocalData.c.obj (msl_all_static_mse_symbian_d.lib),
mwldsym2.exe: warning: keeping definition in ThreadLocalData.c.obj
mwldsym2.exe: warning: Multiply defined symbol: ___get_MSL_init_count in
mwldsym2.exe: warning: files uc_cwhelp.obj (EEXE.LIB), startup.win32.c.obj (msl_all_static_mse_symbian_d.lib),
mwldsym2.exe: warning: keeping definition in startup.win32.c.obj
mwldsym2.exe: warning: Multiply defined symbol: __CleanUpMSL in
mwldsym2.exe: warning: files uc_cwhelp.obj (EEXE.LIB), startup.win32.c.obj (msl_all_static_mse_symbian_d.lib),
mwldsym2.exe: warning: keeping definition in startup.win32.c.obj
mwldsym2.exe: Undefined symbol: 'class CMdaAudioPlayerUtility * CMdaAudioPlayerUtility::NewFilePlayerL(class TDesC16 const &, class MMdaAudioPlayerCallback &, int, enum TMdaPriorityPreference, class CMdaServer *) (?NewFilePlayerL@CMdaAudioPlayerUtility@@SAPAV1@ABVTDesC16@@AAVMMdaAudioPlayerCallback@@HW4TMdaPriorityPreference@@PAVCMdaServer@@@Z)'
mwldsym2.exe: referenced from 'void CPlayerUtility::ConstructL(class TDesC16 const &) (?ConstructL@CPlayerUtility@@AAEXABVTDesC16@@@Z)' in PlayUtility.cpp:38

What I am missing? Which library is to additionaly to link?


Thanks for any hint...


Lykurg

For completeness:

#include <e32std.h>
#include <MdaAudioSamplePlayer.h>

class CPlayerUtility : public CBase, public MMdaAudioPlayerCallback
	{
public:
	static CPlayerUtility* NewL(const TDesC& aFileName);
	static CPlayerUtility* NewLC(const TDesC& aFileName);
	~CPlayerUtility();
private:
	CPlayerUtility();
	void ConstructL(const TDesC& aFileName);
public:
	void Play();
	void Stop();
public:
	// from MMdaAudioToneObserver
	void MapcInitComplete(TInt aError,
			const TTimeIntervalMicroSeconds& aDuration);
	void MapcPlayComplete(TInt aError);
private:
	CMdaAudioPlayerUtility* iPlayUtility;
	TBool iPlaying, iPrepared;
	};

#include "PlayUtility.h"

#include <MdaAudioTonePlayer.h>
#include <eikmenup.h>

CPlayerUtility* CPlayerUtility::NewL(const TDesC& aFileName)
	{
	CPlayerUtility* self = NewLC(aFileName);
	CleanupStack::Pop(self);
	return self;
	}

CPlayerUtility* CPlayerUtility::NewLC(const TDesC& aFileName)
	{
	CPlayerUtility* self = new (ELeave) CPlayerUtility();
	CleanupStack::PushL(self);
	self->ConstructL(aFileName);
	return self;
	}

CPlayerUtility::~CPlayerUtility()
	{
	if (iPlayUtility)
		{
		iPlayUtility->Stop();
//		iPlayUtility->Close(); // Comment out also because of compiler errors.
		}

	delete iPlayUtility;
	}

CPlayerUtility::CPlayerUtility()
	{
	}

void CPlayerUtility::ConstructL(const TDesC& aFileName)
	{
	iPlayUtility = CMdaAudioPlayerUtility::NewFilePlayerL(aFileName, *this);
	iPlaying = iPrepared = EFalse;
	}

void CPlayerUtility::Play()
	{
	iPlayUtility->Play();
	iPlaying = ETrue;
	}

void CPlayerUtility::Stop()
	{
	iPlayUtility->Stop();
	iPlaying = EFalse;
	}

void CPlayerUtility::MapcPlayComplete(TInt /*aError*/)
	{
	iPlaying = EFalse;
	}

void CPlayerUtility::MapcInitComplete(TInt aError,
		const TTimeIntervalMicroSeconds& /*aDuration*/)
	{
	if (aError == KErrNone)
		{
		iPrepared = ETrue;
		iPlayUtility->SetVolume(iPlayUtility->MaxVolume());
		}
	}

[wizard_hu_]

That is a linker error, and it is about a missing library. Check the one for CMdaAudioPlayerUtility in the SDK Help, and add it to the .mmp file.

[lykurg]

Check the one for CMdaAudioPlayerUtility in the SDK Help

Thanks, that's the point, but there is no library called CMdaAudioPlayerUtility? I have installed the S60_5th_Edition_SDK_v1_0_en. Is that possible?

[wizard_hu_]

Thanks, that's the point, but there is no library called CMdaAudioPlayerUtility?

That is why I have suggested checking it in the SDK Help. The library has some other name, but you will find it

I have installed the S60_5th_Edition_SDK_v1_0_en. Is that possible?

Sure, it is one of the oldest API-s, and it is still present in the N97 SDK, so I would definitely expect it to be present in the S60 5th edition one too.

» Symbian OS v9.4 » Symbian OS reference » C++ component reference » Multimedia Multimedia_Framework » CMdaAudioPlayerUtility


--------------------------------------------------------------------------------

#include <MdaAudioSamplePlayer.h>
Link against: ***

Class CMdaAudioPlayerUtility

class CMdaAudioPlayerUtility : public CBase, public MMMFClientUtility;

Description
Plays sampled audio data.

The class offers a simple interface to open, play and obtain information from, sampled audio data. The audio data can be supplied either in a file (file-based), as a descriptor (descriptor-based) or as a URL reference (since version 7.0s).

You already know the .h file (because of the example), but it is good to know, that the headers appear in the help. And the *** section will contain the required .lib file if you check it.

[lykurg]

That is why I have suggested checking it in the SDK Help.

I done it, but even now I having trouble reading and searching my local doc...

Switching to the online docs solved anything. Thanks for holding my Hand while reading the docs!

[arylson]

Fixed? I'm having the same problem.

[wizard_hu_]

Fixed?

Based on #5, yes.

I'm having the same problem.

Apply the same solution then: check the documentation.