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mouhid.sys: Parse HID reports to track contact points.
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parent
683710fbc7
commit
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@ -38,6 +38,13 @@
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WINE_DEFAULT_DEBUG_CHANNEL(hid);
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struct contact
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{
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struct list entry;
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ULONG id;
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POINT pos;
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};
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struct device
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{
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LONG removed;
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@ -49,6 +56,9 @@ struct device
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ULONG report_len;
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char *report_buf;
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ULONG contact_count;
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struct list contacts;
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ULONG caps_count;
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ULONG contact_max;
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HIDP_VALUE_CAPS *id_caps;
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@ -101,10 +111,56 @@ static NTSTATUS start_device_read( DEVICE_OBJECT *device )
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return STATUS_SUCCESS;
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}
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static void add_contact( struct device *impl, struct list *old_contacts, ULONG id, LONG x, LONG y )
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{
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struct contact *contact;
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LIST_FOR_EACH_ENTRY( contact, old_contacts, struct contact, entry )
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if (contact->id == id) break;
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if (&contact->entry != old_contacts)
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{
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list_remove( &contact->entry );
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contact->pos.x = x;
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contact->pos.y = y;
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TRACE( "updating contact %#lx, pos %s\n", contact->id, wine_dbgstr_point( &contact->pos ) );
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}
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else if ((contact = calloc( 1, sizeof(*contact) )))
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{
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contact->id = id;
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contact->pos.x = x;
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contact->pos.y = y;
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TRACE( "new contact %#lx, pos %s\n", contact->id, wine_dbgstr_point( &contact->pos ) );
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}
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else
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{
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ERR( "failed to allocate new contact\n" );
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return;
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}
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list_add_tail( &impl->contacts, &contact->entry );
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}
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static void release_contacts( struct list *contacts )
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{
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struct contact *contact, *next;
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LIST_FOR_EACH_ENTRY_SAFE( contact, next, contacts, struct contact, entry )
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{
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TRACE( "releasing contact %#lx, pos %s\n", contact->id, wine_dbgstr_point( &contact->pos ) );
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list_remove( &contact->entry );
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free( contact );
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}
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}
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static void process_hid_report( struct device *impl, char *report_buf, UINT report_len )
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{
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ULONG contact_count;
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struct list old_contacts = LIST_INIT( old_contacts );
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ULONG i, value, contact_count, usage_count, id;
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LONG x = 0, y = 0;
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NTSTATUS status;
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USHORT usage;
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TRACE( "impl %p, report_buf %p, report_len %u\n", impl, report_buf, report_len );
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@ -117,7 +173,36 @@ static void process_hid_report( struct device *impl, char *report_buf, UINT repo
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contact_count = impl->contact_max;
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}
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FIXME( "Not implemented\n" );
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list_move_tail( &old_contacts, &impl->contacts );
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for (i = 0; i < impl->caps_count; i++)
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{
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USHORT collection = impl->id_caps[i].LinkCollection;
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usage_count = 1;
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usage = HID_USAGE_DIGITIZER_TIP_SWITCH;
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status = HidP_GetUsages( HidP_Input, HID_USAGE_PAGE_DIGITIZER, collection, &usage, &usage_count,
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impl->preparsed, report_buf, report_len );
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if (status != HIDP_STATUS_SUCCESS || !usage_count) continue;
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status = HidP_GetUsageValue( HidP_Input, HID_USAGE_PAGE_DIGITIZER, collection, HID_USAGE_DIGITIZER_CONTACT_ID,
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&id, impl->preparsed, report_buf, report_len );
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if (status != HIDP_STATUS_SUCCESS) continue;
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status = HidP_GetUsageValue( HidP_Input, HID_USAGE_PAGE_GENERIC, collection, HID_USAGE_GENERIC_X,
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&value, impl->preparsed, report_buf, report_len );
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if (status != HIDP_STATUS_SUCCESS) continue;
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else x = scale_value( value, impl->x_caps + i, 0, 65535 );
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status = HidP_GetUsageValue( HidP_Input, HID_USAGE_PAGE_GENERIC, collection, HID_USAGE_GENERIC_Y,
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&value, impl->preparsed, report_buf, report_len );
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if (status != HIDP_STATUS_SUCCESS) continue;
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else y = scale_value( value, impl->y_caps + i, 0, 65535 );
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add_contact( impl, &old_contacts, id, x, y );
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}
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release_contacts( &old_contacts );
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}
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static NTSTATUS WINAPI read_completion( DEVICE_OBJECT *device, IRP *irp, void *context )
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@ -200,6 +285,8 @@ static NTSTATUS initialize_device( DEVICE_OBJECT *device )
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NTSTATUS status;
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HIDP_CAPS caps;
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list_init( &impl->contacts );
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if ((status = call_hid_device( device, IRP_MJ_CREATE, 0, NULL, 0, NULL, 0 ))) return status;
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if ((status = call_hid_device( device, IRP_MJ_DEVICE_CONTROL, IOCTL_HID_GET_COLLECTION_INFORMATION,
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&info, 0, &info, sizeof(info) )))
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@ -314,6 +401,7 @@ static NTSTATUS WINAPI driver_pnp( DEVICE_OBJECT *device, IRP *irp )
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IoSkipCurrentIrpStackLocation( irp );
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status = IoCallDriver( impl->bus_device, irp );
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IoDetachDevice( impl->bus_device );
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release_contacts( &impl->contacts );
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free( impl->id_caps );
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free( impl->x_caps );
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free( impl->y_caps );
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