2.2.9.8 TS_URB_ISOCH_TRANSFER
This packet represents the URB structure URB_ISOCH_TRANSFER, as specified in [MSFT-W2KDDK] Volume 2, Part 4, Chapter 3. If the TransferFlags field in URB_ISOCH_TRANSFER contains the USBD_TRANSFER_DIRECTION_IN flag, the packet is sent using the TRANSFER_IN_REQUEST message with the OutputBufferSize field set to TransferBufferLength as defined in URB_ISOCH_TRANSFER; otherwise, the packet is sent using the TRANSFER_OUT_REQUEST message with the OutputBufferSize field set to TransferBufferLength and the OutputBuffer field set to the data in TransferBuffer or TransferBufferMDL as defined in URB_ISOCH_TRANSFER.
|
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
|
2 |
|
|
|
|
|
|
|
|
|
3 |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
TS_URB_HEADER |
|||||||||||||||||||||||||||||||
|
... |
|||||||||||||||||||||||||||||||
|
PipeHandle |
|||||||||||||||||||||||||||||||
|
TransferFlags |
|||||||||||||||||||||||||||||||
|
StartFrame |
|||||||||||||||||||||||||||||||
|
NumberOfPackets |
|||||||||||||||||||||||||||||||
|
ErrorCount |
|||||||||||||||||||||||||||||||
|
IsoPacket (variable) |
|||||||||||||||||||||||||||||||
|
... |
|||||||||||||||||||||||||||||||
TS_URB_HEADER (8 bytes): A TS_URB_HEADER as specified in section 2.2.9.1.1.
PipeHandle (4 bytes): A 32-bit unsigned integer. The handle returned from the client after it successfully completes a TS_URB_SELECT_INTERFACE request.
TransferFlags (4 bytes): A 32-bit unsigned integer. This value is from the TransferFlags field in URB_ISOCH_TRANSFER.
StartFrame (4 bytes): A 32-bit unsigned integer. This value is from the StartFrame field in URB_ISOCH_TRANSFER.
NumberOfPackets (4 bytes): A 32-bit unsigned integer. This value is from the NumberOfPackets field in URB_ISOCH_TRANSFER.
ErrorCount (4 bytes): A 32-bit unsigned integer. This value is from the ErrorCount field in URB_ISOCH_TRANSFER.
IsoPacket (variable): An array of USBD_ISO_PACKET_DESCRIPTOR structures. This value is from the IsoPacket field in URB_ISOCH_TRANSFER.