NeroCOM - How does one Read/Write Packets? - Club CDFreaks

smohalanobish · 14-07-2004

I have written onto a blank DVD+RW a few files using the NERO_BURN_OPTIONS.NERO_BURN_OPTION_CREATE_UDF_FS option. Nero Burning Rom recognises the CD as an UDF cd, so it's fine there.

I am using C# and NeroCOM, and would like to be able to read and write packets. At this moment, this is the code I'm trying out:

Code:

Nero DVDBurners = new NeroClass();
try
{
	NeroDrives DVDWRoms = DVDBurners.GetDrives(NERO_MEDIA_TYPE.NERO_MEDIA_DVD_P_RW);
	NeroDrive DVDBurner = (NeroDrive) DVDWRoms.Item(0);
	//INeroFileSystemBlockWriter BlkWrt = DVDBurner.CreateBlockWriter(AccessMode.ePacketWriting);
	INeroFileSystemBlockReader BlkRd = DVDBurner.CreateBlockReader(AccessMode.eNoWriting);
	NeroFSSecNo startSec = new NeroFSSecNoClass();
	startSec.LoPart = 1;
	startSec.HiPart = 1;
	NeroFSSecNo secWritten = new NeroFSSecNoClass();
	secWritten.LoPart = 2;
	secWritten.HiPart = 2;
	NeroFSSecNo sec2Write = new NeroFSSecNoClass();
	sec2Write.LoPart = 0;
	sec2Write.HiPart = 0;
	Object pvarBuffer = new object();
	BlkRd.ReadSectorsBuffered(ref pvarBuffer, startSec, secWritten, ref sec2Write); //BlkWrt.WriteSectorsBuffered( pvarBuffer,
}
catch (System.Exception ee)
{
	System.Windows.Forms.MessageBox.Show("Nero Exception: " + ee.Message + ee.StackTrace);
}

At the indigo line, It throws an error: "Nero Exception: The parameter is incorrect." What is the correct usage of the Read/WriteSectorsBuffered so that I can read as well as write to an UDF formatted DVD+RW?

*alexp* · 14-07-2004

HiPart and LoPart should be treated as 64-bit integers. Try assigning zero to HiPart instead of 1 or 2. The way you wrote it startSec is 0x100000001 and secWritten is 0x200000002.

Other than this, pvarBuffer should be a VARIANT.

smohalanobish · 15-07-2004

Quote:

In vb.net in case of absence of any specific variable type, it will be declared as object type. Whereas in Vb it is considered as Variant data Type

http://www.dotnetspider.com/Technolo...QuestionId=222
So, I think I did no wrong by declaring it as an Object.
C# & VB.NET have a System.Int64 object, so it didn't occour to me that HiPart & LoPart might be of a 64-bit integer.

Ok, despite setting the high bits to 0 and low bits appropriately, I am not able to read anything. It still returns the error

Nero Exception : The parameter is incorrect. at NEROLib.NeroFileSystemBlockClass.ReadSectorsBuffered(Object& pvarBuffer, NeroFSSecNo pStartSector, NeroFSSecNo pNoSectors, NeroFSSecNo& ppNoSectorsRead)

14-07-2004	#1 (permalink)
smohalanobish New on Forum Join Date: Jul 2004 Posts: 5	NeroCOM - How does one Read/Write Packets? <a href='http://adstats.cdfreaks.com/www/delivery/ck.php?n=a13febf7&cb=INSERT_RANDOM_NUMBER_HERE' target='_blank'><img src='http://adstats.cdfreaks.com/www/delivery/avw.php?zoneid=30&cb=INSERT_RANDOM_NUMBER_HERE&n=a13febf7' border='0' alt='' /></a> I have written onto a blank DVD+RW a few files using the NERO_BURN_OPTIONS.NERO_BURN_OPTION_CREATE_UDF_FS option. Nero Burning Rom recognises the CD as an UDF cd, so it's fine there. I am using C# and NeroCOM, and would like to be able to read and write packets. At this moment, this is the code I'm trying out: Code: Nero DVDBurners = new NeroClass(); try { NeroDrives DVDWRoms = DVDBurners.GetDrives(NERO_MEDIA_TYPE.NERO_MEDIA_DVD_P_RW); NeroDrive DVDBurner = (NeroDrive) DVDWRoms.Item(0); //INeroFileSystemBlockWriter BlkWrt = DVDBurner.CreateBlockWriter(AccessMode.ePacketWriting); INeroFileSystemBlockReader BlkRd = DVDBurner.CreateBlockReader(AccessMode.eNoWriting); NeroFSSecNo startSec = new NeroFSSecNoClass(); startSec.LoPart = 1; startSec.HiPart = 1; NeroFSSecNo secWritten = new NeroFSSecNoClass(); secWritten.LoPart = 2; secWritten.HiPart = 2; NeroFSSecNo sec2Write = new NeroFSSecNoClass(); sec2Write.LoPart = 0; sec2Write.HiPart = 0; Object pvarBuffer = new object(); BlkRd.ReadSectorsBuffered(ref pvarBuffer, startSec, secWritten, ref sec2Write); //BlkWrt.WriteSectorsBuffered( pvarBuffer, } catch (System.Exception ee) { System.Windows.Forms.MessageBox.Show("Nero Exception: " + ee.Message + ee.StackTrace); } At the indigo line, It throws an error: "Nero Exception: The parameter is incorrect." What is the correct usage of the Read/WriteSectorsBuffered so that I can read as well as write to an UDF formatted DVD+RW?

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14-07-2004	#2 (permalink)
alexp Nero Developer Join Date: Oct 2003 Posts: 605	HiPart and LoPart should be treated as 64-bit integers. Try assigning zero to HiPart instead of 1 or 2. The way you wrote it startSec is 0x100000001 and secWritten is 0x200000002. Other than this, pvarBuffer should be a VARIANT.