[betajaen]

Hello,

I having a strange issue with NewDTObject and the DTA_Handle tag item. When I do so, I get a #80000008 Guru when I do so.

I would like to read a JPEG image within a file, but its not at the beginning.

I am 100% certain where it seeks to is a valid JPEG header, and the BPTR is correct and seeked to the correct position.

I have checked this file and location with a hex editor. I have also extracted the JPEG file via a hex editor and it loads fine. Loading another similar JPEG file via the name as a path works fine as well.

This is my code (simplified):

BPTR file = Open("some-file", MODE_OLDFILE);

Seek(file, offset, OFFSET_BEGINNING);

Object* dtObj = NewDTObject(
	NULL,
	DTA_SourceType, DTST_FILE,
	DTA_GroupID, GID_PICTURE,
	PDTA_Remap, TRUE,
	PDTA_Screen, (ULONG) mScreen,
	PDTA_DestMode, PMODE_V43,
	DTA_Handle, (ULONG) file,           // << -------- This here.
	TAG_DONE
);

I know, there is a way to load in files through memory, but I don't want the Amiga to temporarily allocate 80kb each time I wish to load an image.

I am on AmigaOS 3.2.1, with the default JPEG data type.

If anyone can shed a light on this, It would be most appreciative.

Thankyou,

betajaen