Sample Report Descriptor - Parallel/Hybrid Mode (Windows 7)
This sample descriptor can serve as a starting point for creating a parallel or hybrid report descriptor. The mode used depends on the relationship between the maximum count and the contact count.
A hybrid report contains a contact count that is greater than the number of contacts that fit into one packet. A parallel report contains all contact information in a single packet. For more information, see Selecting Packet Reporting Modes in Multi-touch Drivers.
This report descriptor has a top-level collection with two embedded logical collections. Each logical collection represents data that can be received from a single physical contact. Be aware that the contact count usage is not contained in either logical collection; instead, it follows as part of the top-level collection.
0x05, 0x0d, // USAGE_PAGE (Digitizers)
0x09, 0x04, // USAGE (Touch Screen)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORTID_PEN, // REPORT_ID (Touch)
0x09, 0x22, // USAGE (Finger)
0xa1, 0x02, // COLLECTION (Logical)
0x09, 0x42, // USAGE (Tip Switch)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x32, // USAGE (In Range)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x47, // USAGE (Confidence)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x05, // REPORT_COUNT (5)
0x81, 0x03, // INPUT (Cnst,Ary,Abs)
0x75, 0x08, // REPORT_SIZE (8)
0x09, 0x51, // USAGE (Contact Identifier)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x05, 0x01, // USAGE_PAGE (Generic Desk..
0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767)
0x75, 0x10, // REPORT_SIZE (16)
0x55, 0x00, // UNIT_EXPONENT (0)
0x65, 0x00, // UNIT (None)
0x09, 0x30, // USAGE (X)
0x35, 0x00, // PHYSICAL_MINIMUM (0)
0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x31, // USAGE (Y)
0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0)
0x81, 0x02, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION
0xa1, 0x02, // COLLECTION (Logical)
0x05, 0x0d, // USAGE_PAGE (Digitizers)
0x09, 0x42, // USAGE (Tip Switch)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x32, // USAGE (In Range)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x47, // USAGE (Confidence)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x05, // REPORT_COUNT (5)
0x81, 0x03, // INPUT (Cnst,Ary,Abs)
0x75, 0x08, // REPORT_SIZE (8)
0x09, 0x51, // USAGE (Contact Identifier)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x05, 0x01, // USAGE_PAGE (Generic Desk..
0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767)
0x75, 0x10, // REPORT_SIZE (16)
0x55, 0x00, // UNIT_EXPONENT (0)
0x65, 0x00, // UNIT (None)
0x09, 0x30, // USAGE (X)
0x35, 0x00, // PHYSICAL_MINIMUM (0)
0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x31, // USAGE (Y)
0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0)
0x81, 0x02, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION
0x05, 0x0d, // USAGE_PAGE (Digitizers)
0x09, 0x54, // USAGE (Contact Count)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x08, // LOGICAL_MAXIMUM (8)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x55, // USAGE(Contact Count Maximum)
0xb1, 0x02, // FEATURE (Data,Var,Abs)
0xc0, // END_COLLECTION