NeroEstimateTrackSize crashes - Club CDFreaks

fpa2 · 17-06-2005

Hi,

I want to estimate the size of the isoTrack I will burn to test if the space on the CD is sufficient or not...
I have problem wit the function NeroEstimateTrackSize that crashes
Her is my code :
Please could you tell what do I wrong.. ?

Code:

NERO_FILESYSTEMTRACK_OPTIONS pTrackOptions;
memset(&pTrackOptions, 0, sizeof(NERO_FILESYSTEMTRACK_OPTIONS));
pTrackOptions.netsStructureSize =sizeof (NERO_FILESYSTEMTRACK_OPTIONS);
pTrackOptions.netspCDStamp = NULL;
pTrackOptions.netsMediaType = MEDIA_CD;
pTrackOptions.netsDeviceHandle = m_NeroDeviceHandle;
pTrackOptions.netsFlags = NBF_WRITE | NBF_DISABLE_ABORT | NBF_BUF_UNDERRUN_PROT | NBF_DETECT_NON_EMPTY_CDRW | NBF_CD_TEXT | NBF_VERIFY;;
pTrackOptions.netsFSContainer = NULL;
pTrackOptions.netsFSContainerFlags = 0;



int v_NecessarySize = 0;
try{
    v_NecessarySize = NeroEstimateTrackSize(m_IsoTrack,NETS_EXACT_SIZE,&pTrackOptions);
}catch(...){
    char * NeroResult = NeroGetErrorLog();
    sprintf(vMsg,"%s \n  Nero error: <%s>",vMsg,NeroResult);
    NeroFreeMem(NeroResult);
    SetBurnStatus(vMsg);
    return ESTIM_TRACK_SIZE_ERROR;
}

The error is : Access violation ntdll.dll. I suppose that my object pTrackOption is not corredtly initialized.... but what is wrong ?

Thanks in advance for your help

Fpa2

Oliver M. · 17-06-2005

Just a wild guess: Is the ISO track and all items + referenced strings in the ISO track valid? Is the code located right before NeroBurn, which would succeed if you omitted the NeroEstimateTrackSize?

And a sidenote: NeroEstimateTrackSize returns an unsigned int.

Oliver M. · 17-06-2005

PS: The posted code snipped works for me, so the bug must be located somewhere else.

fpa2 · 17-06-2005

Hi Oliver,

The code posted has been taken from this forum and the person who posted this code said it was working...
But, my program works fine if I do not estimate the size...
I can burn in multisession with my NeroIsoTrack....

Strange isn't it ?

Fpa2

Oliver M. · 17-06-2005

Really, it is.
Please double-check it: Have you really placed the code directly before the NeroBurn command, just to be on the safe side?
Are you really using the correct variables?

fpa2 · 17-06-2005

Oliver,

Sorry, you're totally right!
This is not the function that is in cause....
If I delete its call, the programm crashes again....

It is crashing when I call NeroBurn, and the thing i don't understand is that the error is done on the Callback, on the first line! (creation on a CString!)

Code:

void NERO_CALLBACK_ATTR CTestNeroAPI_InterfaceDlg::SetPhaseCallback(void *pUserData, const char *text)
{
  // display the current phase the burn process is currently going through
  CString csTemp(text);
  ((CTestNeroAPI_InterfaceDlg*)pUserData)->AppendString("Phase: " + csTemp);
  return;
}

Do you have an idea of the origin of this error.. ?
If needed, I can put my code in attach....

thanks for your help

Fpa2

Oliver M. · 17-06-2005

Can you put a breakpoint on CString csTemp(text); and see
(a) where text is pointing to and
(b) whether the memory text is pointing to contains considerably valid string data
(c) whether the string data is correctly null-terminated (ANSI->1 byte)

[Edit]
I just peeked into my code: For whatever reason, I check the passed string pointer against NULL. Maybe it was just defensive programming...

17-06-2005	#2 (permalink)
Oliver M. CD Freaks Member Join Date: Mar 2005 Posts: 109	Re: NeroEstimateTrackSize crashes Just a wild guess: Is the ISO track and all items + referenced strings in the ISO track valid? Is the code located right before NeroBurn, which would succeed if you omitted the NeroEstimateTrackSize? And a sidenote: NeroEstimateTrackSize returns an unsigned int.

17-06-2005	#3 (permalink)
Oliver M. CD Freaks Member Join Date: Mar 2005 Posts: 109	Re: NeroEstimateTrackSize crashes PS: The posted code snipped works for me, so the bug must be located somewhere else.

17-06-2005	#4 (permalink)
fpa2 New on Forum Join Date: Apr 2005 Posts: 11	Re: NeroEstimateTrackSize crashes Hi Oliver, The code posted has been taken from this forum and the person who posted this code said it was working... But, my program works fine if I do not estimate the size... I can burn in multisession with my NeroIsoTrack.... Strange isn't it ? Fpa2

17-06-2005	#5 (permalink)
Oliver M. CD Freaks Member Join Date: Mar 2005 Posts: 109	Re: NeroEstimateTrackSize crashes Really, it is. Please double-check it: Have you really placed the code directly before the NeroBurn command, just to be on the safe side? Are you really using the correct variables?

17-06-2005	#6 (permalink)
fpa2 New on Forum Join Date: Apr 2005 Posts: 11	Re: NeroEstimateTrackSize crashes Oliver, Sorry, you're totally right! This is not the function that is in cause.... If I delete its call, the programm crashes again.... It is crashing when I call NeroBurn, and the thing i don't understand is that the error is done on the Callback, on the first line! (creation on a CString!) Code: void NERO_CALLBACK_ATTR CTestNeroAPI_InterfaceDlg::SetPhaseCallback(void pUserData, const char text) { // display the current phase the burn process is currently going through CString csTemp(text); ((CTestNeroAPI_InterfaceDlg*)pUserData)->AppendString("Phase: " + csTemp); return; } Do you have an idea of the origin of this error.. ? If needed, I can put my code in attach.... thanks for your help Fpa2

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17-06-2005	#7 (permalink)
Oliver M. CD Freaks Member Join Date: Mar 2005 Posts: 109	Re: NeroEstimateTrackSize crashes Can you put a breakpoint on CString csTemp(text); and see (a) where text is pointing to and (b) whether the memory text is pointing to contains considerably valid string data (c) whether the string data is correctly null-terminated (ANSI->1 byte) [Edit] I just peeked into my code: For whatever reason, I check the passed string pointer against NULL. Maybe it was just defensive programming...

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