Add discovering of primary GATT services on Windows

It is still partially implemented where are discovered
only the primary services UUID's.

Change-Id: I2765a8f83be4716cfe875a2f7a3593ba1af211a4
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>

2 files changed, 40 insertions, 0 deletions

diff --git a/src/bluetooth/windows/qwinlowenergybluetooth.cpp b/src/bluetooth/windows/qwinlowenergybluetooth.cpp
index 275c5f64..5fe4e16b 100644
--- a/src/bluetooth/windows/qwinlowenergybluetooth.cpp
+++ b/src/bluetooth/windows/qwinlowenergybluetooth.cpp
@@ -182,6 +182,11 @@ DeviceDiscoveryResult::DeviceDiscoveryResult()
 {
 }
 
+ServicesDiscoveryResult::ServicesDiscoveryResult()
+    : error(NO_ERROR)
+{
+}
+
 static DeviceDiscoveryResult availableSystemInterfaces(
         const GUID &deviceInterface)
 {
@@ -312,6 +317,32 @@ DeviceDiscoveryResult startDiscoveryOfRemoteDevices()
                 QUuid("781aee18-7733-4ce4-add0-91f41c67b592"));
 }
 
+ServicesDiscoveryResult startDiscoveryOfPrimaryServices(
+        HANDLE hDevice)
+{
+    ServicesDiscoveryResult result;
+    USHORT servicesCount = 0;
+    forever {
+        const HRESULT hr = BluetoothGATTGetServices(
+                    hDevice,
+                    result.services.count(),
+                    result.services.isEmpty() ? NULL : &result.services[0],
+                    &servicesCount,
+                    BLUETOOTH_GATT_FLAG_NONE);
+
+        if (hr == HRESULT_FROM_WIN32(ERROR_MORE_DATA)) {
+            result.services.resize(servicesCount);
+        } else if (hr == S_OK) {
+            break;
+        } else {
+            result.error = ::GetLastError();
+            result.services.clear();
+            break;
+        }
+    }
+    return result;
+}
+
 bool isSupported()
 {
     static bool resolved = resolveFunctions(bluetoothapis());
diff --git a/src/bluetooth/windows/qwinlowenergybluetooth_p.h b/src/bluetooth/windows/qwinlowenergybluetooth_p.h
index d7987966..cf83f331 100644
--- a/src/bluetooth/windows/qwinlowenergybluetooth_p.h
+++ b/src/bluetooth/windows/qwinlowenergybluetooth_p.h
@@ -36,6 +36,7 @@
 #define QWINLOWENERGYBLUETOOTH_P_H
 
 #include <QtCore/qstringlist.h>
+#include <QtCore/qvector.h>
 
 #include <QtBluetooth/qbluetoothaddress.h>
 
@@ -173,10 +174,18 @@ struct DeviceDiscoveryResult
     DWORD error;
 };
 
+struct ServicesDiscoveryResult
+{
+    ServicesDiscoveryResult();
+    QVector<BTH_LE_GATT_SERVICE> services;
+    DWORD error;
+};
+
 bool isSupported();
 bool hasLocalRadio();
 
 DeviceDiscoveryResult startDiscoveryOfRemoteDevices();
+ServicesDiscoveryResult startDiscoveryOfPrimaryServices(HANDLE hDevice);
 
 } // namespace WinLowEnergyBluetooth