Index: device/bluetooth/bluetooth_low_energy_win.cc |
diff --git a/device/bluetooth/bluetooth_low_energy_win.cc b/device/bluetooth/bluetooth_low_energy_win.cc |
index 1e985b54f1b00b2b771c61374519a5c76a19490b..3e2c7c2a900a0c387bcb73b261545dc5d2ba8037 100644 |
--- a/device/bluetooth/bluetooth_low_energy_win.cc |
+++ b/device/bluetooth/bluetooth_low_energy_win.cc |
@@ -757,5 +757,42 @@ HRESULT BluetoothLowEnergyWrapper::ReadCharacteristicsOfAService( |
return hr; |
} |
+HRESULT BluetoothLowEnergyWrapper::ReadDescriptorsOfACharacteristic( |
+ base::FilePath& service_path, |
+ const PBTH_LE_GATT_CHARACTERISTIC characteristic, |
+ scoped_ptr<BTH_LE_GATT_DESCRIPTOR>* out_included_descriptors, |
+ USHORT* out_counts) { |
+ base::File file(service_path, base::File::FLAG_OPEN | base::File::FLAG_READ); |
+ if (!file.IsValid()) |
+ return HRESULT_FROM_WIN32(ERROR_OPEN_FAILED); |
+ |
+ USHORT required_length = 0; |
+ HRESULT hr = BluetoothGATTGetDescriptors( |
+ file.GetPlatformFile(), characteristic, 0, NULL, &required_length, |
+ BLUETOOTH_GATT_FLAG_NONE); |
+ if (hr != HRESULT_FROM_WIN32(ERROR_MORE_DATA)) |
+ return hr; |
+ |
+ out_included_descriptors->reset(new BTH_LE_GATT_DESCRIPTOR[required_length]); |
+ USHORT actual_length = required_length; |
scheib
2016/03/01 00:06:22
I overlooked that you did not address this in prev
gogerald1
2016/03/01 17:00:13
Done.
|
+ hr = BluetoothGATTGetDescriptors(file.GetPlatformFile(), characteristic, |
+ actual_length, |
+ out_included_descriptors->get(), |
+ &required_length, BLUETOOTH_GATT_FLAG_NONE); |
+ if (SUCCEEDED(hr) && required_length != actual_length) { |
+ LOG(ERROR) << "Retrieved # of descriptors is not equal to expected" |
+ << " actual_length " << actual_length << " required_length " |
+ << required_length; |
+ hr = HRESULT_FROM_WIN32(ERROR_INVALID_USER_BUFFER); |
+ } |
+ *out_counts = actual_length; |
+ |
+ if (FAILED(hr)) { |
+ out_included_descriptors->reset(nullptr); |
+ *out_counts = 0; |
+ } |
+ return hr; |
+} |
+ |
} // namespace win |
} // namespace device |