Implement read & write remote GATT characteristic value for Windows

device/bluetooth/bluetooth_task_manager_win.cc

Index: device/bluetooth/bluetooth_task_manager_win.cc
diff --git a/device/bluetooth/bluetooth_task_manager_win.cc b/device/bluetooth/bluetooth_task_manager_win.cc
index c45f022a9ec91761c2d394adc2ba1ba7f7568067..c201a623e3200430918e72845adbc7472d86a0e7 100644
--- a/device/bluetooth/bluetooth_task_manager_win.cc
+++ b/device/bluetooth/bluetooth_task_manager_win.cc
@@ -809,6 +809,44 @@ void BluetoothTaskManagerWin::GetGattIncludedDescriptors(
                             number_of_descriptors, hr));
 }
 
+void BluetoothTaskManagerWin::ReadCharacteristicValue(
+    base::FilePath service_path,
+    BTH_LE_GATT_CHARACTERISTIC characteristic,
+    const ReadGattCharacteristicValueCallback& callback) {
+  scoped_ptr<BTH_LE_GATT_CHARACTERISTIC_VALUE> win_characteristic_value;
+  HRESULT hr =
+      win::BluetoothLowEnergyWrapper::GetInstance()
+          ->ReadTheValueOfACharacteristic(
+              service_path, (PBTH_LE_GATT_CHARACTERISTIC)(&characteristic),
+              &win_characteristic_value);
+
+  ui_task_runner_->PostTask(
+      FROM_HERE,
+      base::Bind(callback, base::Passed(&win_characteristic_value), hr));
+}
+
+void BluetoothTaskManagerWin::WriteCharacteristicValue(
+    base::FilePath service_path,
+    BTH_LE_GATT_CHARACTERISTIC characteristic,
+    std::vector<uint8_t> new_value,
+    const HResultCallback& callback) {
+  ULONG length = sizeof(ULONG) + new_value.size();
+  PBTH_LE_GATT_CHARACTERISTIC_VALUE win_new_value =
+      (BTH_LE_GATT_CHARACTERISTIC_VALUE*)malloc(length);
+  win_new_value->DataSize = new_value.size();
+  for (ULONG i = 0; i < new_value.size(); i++)
+    win_new_value->Data[i] = new_value[i];
+
+  HRESULT hr =
+      win::BluetoothLowEnergyWrapper::GetInstance()
+          ->WriteTheValueOfACharacteristic(
+              service_path, (PBTH_LE_GATT_CHARACTERISTIC)(&characteristic),
+              win_new_value);
+  free(win_new_value);
+
+  ui_task_runner_->PostTask(FROM_HERE, base::Bind(callback, hr));
+}
+
 void BluetoothTaskManagerWin::PostGetGattIncludedCharacteristics(
     const base::FilePath& service_path,
     const BluetoothUUID& uuid,
@@ -832,4 +870,30 @@ void BluetoothTaskManagerWin::PostGetGattIncludedDescriptors(
                  service_path, *characteristic, callback));
 }
 
+void BluetoothTaskManagerWin::PostReadCharacteristicValue(
+    const base::FilePath& service_path,
+    const PBTH_LE_GATT_CHARACTERISTIC characteristic,
+    const ReadGattCharacteristicValueCallback& callback) {
+  DCHECK(ui_task_runner_->RunsTasksOnCurrentThread());
+  bluetooth_task_runner_->PostTask(
+      FROM_HERE, base::Bind(&BluetoothTaskManagerWin::ReadCharacteristicValue,
+                            this, service_path, *characteristic, callback));
+  FOR_EACH_OBSERVER(BluetoothTaskManagerWin::Observer, observers_,
+                    OnBluetoothAttemptReadGattCharacteristic());
+}
+
+void BluetoothTaskManagerWin::PostWriteCharacteristicValue(
+    const base::FilePath& service_path,
+    const PBTH_LE_GATT_CHARACTERISTIC characteristic,
+    const std::vector<uint8_t>& new_value,
+    const HResultCallback& callback) {
+  DCHECK(ui_task_runner_->RunsTasksOnCurrentThread());
+  bluetooth_task_runner_->PostTask(
+      FROM_HERE,
+      base::Bind(&BluetoothTaskManagerWin::WriteCharacteristicValue, this,
+                 service_path, *characteristic, new_value, callback));
+  FOR_EACH_OBSERVER(BluetoothTaskManagerWin::Observer, observers_,
+                    OnBluetoothAttemptWriteGattCharacteristic());
+}
+
 }  // namespace device