USBD_ISO_PACKET_DESCRIPTOR - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// usb.h
typedef struct _USBD_ISO_PACKET_DESCRIPTOR {
ULONG Offset;
ULONG Length;
USBD_STATUS Status;
} USBD_ISO_PACKET_DESCRIPTOR, *PUSBD_ISO_PACKET_DESCRIPTOR;
View the official Windows Driver Kit DDI referenceNo description available.
The USBD_ISO_PACKET_DESCRIPTOR structure is used by USB client drivers to describe an isochronous transfer packet.
OffsetSpecifies the offset, in bytes, of the buffer for this packet from the beginning of the entire isochronous transfer buffer.
LengthSet by the host controller to indicate the actual number of bytes received from the device for isochronous IN transfers. Length not used for isochronous OUT transfers.
StatusContains the status, on return from the host controller driver, of this transfer packet.
This structure is used as part of an isochronous transfer request to the host controller driver using the _URB_ISOCH_TRANSFER structure. The Offset member contains the offset from the beginning of the TransferBuffer or TransferBufferMDL members of _URB_ISOCH_TRANSFER.
How to Transfer Data to USB Isochronous Endpoints