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mouhid.sys: Parse HID reports to track contact points.

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Rémi Bernon 2024-02-13 11:31:37 +01:00 committed by Alexandre Julliard
parent 683710fbc7
commit d88f92eb4e
1 changed files with 90 additions and 2 deletions
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92
dlls/mouhid.sys/main.c
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@ -38,6 +38,13 @@
WINE_DEFAULT_DEBUG_CHANNEL(hid);
struct contact
{
struct list entry;
ULONG id;
POINT pos;
};
struct device
{
LONG removed;
@ -49,6 +56,9 @@ struct device
ULONG report_len;
char *report_buf;
ULONG contact_count;
struct list contacts;
ULONG caps_count;
ULONG contact_max;
HIDP_VALUE_CAPS *id_caps;
@ -101,10 +111,56 @@ static NTSTATUS start_device_read( DEVICE_OBJECT *device )
return STATUS_SUCCESS;
}
static void add_contact( struct device *impl, struct list *old_contacts, ULONG id, LONG x, LONG y )
{
struct contact *contact;
LIST_FOR_EACH_ENTRY( contact, old_contacts, struct contact, entry )
if (contact->id == id) break;
if (&contact->entry != old_contacts)
{
list_remove( &contact->entry );
contact->pos.x = x;
contact->pos.y = y;
TRACE( "updating contact %#lx, pos %s\n", contact->id, wine_dbgstr_point( &contact->pos ) );
}
else if ((contact = calloc( 1, sizeof(*contact) )))
{
contact->id = id;
contact->pos.x = x;
contact->pos.y = y;
TRACE( "new contact %#lx, pos %s\n", contact->id, wine_dbgstr_point( &contact->pos ) );
}
else
{
ERR( "failed to allocate new contact\n" );
return;
}
list_add_tail( &impl->contacts, &contact->entry );
}
static void release_contacts( struct list *contacts )
{
struct contact *contact, *next;
LIST_FOR_EACH_ENTRY_SAFE( contact, next, contacts, struct contact, entry )
{
TRACE( "releasing contact %#lx, pos %s\n", contact->id, wine_dbgstr_point( &contact->pos ) );
list_remove( &contact->entry );
free( contact );
}
}
static void process_hid_report( struct device *impl, char *report_buf, UINT report_len )
{
ULONG contact_count;
struct list old_contacts = LIST_INIT( old_contacts );
ULONG i, value, contact_count, usage_count, id;
LONG x = 0, y = 0;
NTSTATUS status;
USHORT usage;
TRACE( "impl %p, report_buf %p, report_len %u\n", impl, report_buf, report_len );
@ -117,7 +173,36 @@ static void process_hid_report( struct device *impl, char *report_buf, UINT repo
contact_count = impl->contact_max;
}
FIXME( "Not implemented\n" );
list_move_tail( &old_contacts, &impl->contacts );
for (i = 0; i < impl->caps_count; i++)
{
USHORT collection = impl->id_caps[i].LinkCollection;
usage_count = 1;
usage = HID_USAGE_DIGITIZER_TIP_SWITCH;
status = HidP_GetUsages( HidP_Input, HID_USAGE_PAGE_DIGITIZER, collection, &usage, &usage_count,
impl->preparsed, report_buf, report_len );
if (status != HIDP_STATUS_SUCCESS || !usage_count) continue;
status = HidP_GetUsageValue( HidP_Input, HID_USAGE_PAGE_DIGITIZER, collection, HID_USAGE_DIGITIZER_CONTACT_ID,
&id, impl->preparsed, report_buf, report_len );
if (status != HIDP_STATUS_SUCCESS) continue;
status = HidP_GetUsageValue( HidP_Input, HID_USAGE_PAGE_GENERIC, collection, HID_USAGE_GENERIC_X,
&value, impl->preparsed, report_buf, report_len );
if (status != HIDP_STATUS_SUCCESS) continue;
else x = scale_value( value, impl->x_caps + i, 0, 65535 );
status = HidP_GetUsageValue( HidP_Input, HID_USAGE_PAGE_GENERIC, collection, HID_USAGE_GENERIC_Y,
&value, impl->preparsed, report_buf, report_len );
if (status != HIDP_STATUS_SUCCESS) continue;
else y = scale_value( value, impl->y_caps + i, 0, 65535 );
add_contact( impl, &old_contacts, id, x, y );
}
release_contacts( &old_contacts );
}
static NTSTATUS WINAPI read_completion( DEVICE_OBJECT *device, IRP *irp, void *context )
@ -200,6 +285,8 @@ static NTSTATUS initialize_device( DEVICE_OBJECT *device )
NTSTATUS status;
HIDP_CAPS caps;
list_init( &impl->contacts );
if ((status = call_hid_device( device, IRP_MJ_CREATE, 0, NULL, 0, NULL, 0 ))) return status;
if ((status = call_hid_device( device, IRP_MJ_DEVICE_CONTROL, IOCTL_HID_GET_COLLECTION_INFORMATION,
&info, 0, &info, sizeof(info) )))
@ -314,6 +401,7 @@ static NTSTATUS WINAPI driver_pnp( DEVICE_OBJECT *device, IRP *irp )
IoSkipCurrentIrpStackLocation( irp );
status = IoCallDriver( impl->bus_device, irp );
IoDetachDevice( impl->bus_device );
release_contacts( &impl->contacts );
free( impl->id_caps );
free( impl->x_caps );
free( impl->y_caps );