Bluetooth: Profile support for Chrome OS

device/bluetooth/bluetooth_socket_experimental_chromeos.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_EXPERIMENTAL_CHROMEOS_H_
+#define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_EXPERIMENTAL_CHROMEOS_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "chromeos/chromeos_export.h"
+#include "device/bluetooth/bluetooth_socket.h"
+
+namespace dbus {
+
+class FileDescriptor;
+
+}  // namespace dbus
+
+namespace net {
+
+class DrainableIOBuffer;
+class GrowableIOBuffer;
+
+}  // namespace net
+
+namespace chromeos {
+
+// The BluetoothSocketExperimentalChromeOS class is an alternate implementation
+// of BluetoothSocket for the Chrome OS platform using the Bluetooth Smart
+// capable backend. It will become the sole implementation for Chrome OS, and
+// be renamed to BluetoothSocketChromeOS, once the backend is switched.
+class CHROMEOS_EXPORT BluetoothSocketExperimentalChromeOS
+    : public device::BluetoothSocket {
+ public:
+  // BluetoothSocket override.
+  virtual bool Receive(net::GrowableIOBuffer* buffer) OVERRIDE;
+  virtual bool Send(net::DrainableIOBuffer* buffer) OVERRIDE;
+  virtual std::string GetLastErrorMessage() const OVERRIDE;
+
+  // Create an instance of a BluetoothSocket from the passed file descriptor
+  // received over D-Bus in |fd|, the descriptor will be taken from that object
+  // and ownership passed to the returned object.
+  static scoped_refptr<device::BluetoothSocket> Create(
+      dbus::FileDescriptor* fd);
+
+ protected:
+  virtual ~BluetoothSocketExperimentalChromeOS();
+
+ private:
+  BluetoothSocketExperimentalChromeOS(int fd);
+
+  // The different socket types have different reading patterns; l2cap sockets
+  // have to be read with boundaries between datagrams preserved while rfcomm
+  // sockets do not.
+  enum SocketType {
+    L2CAP,
+    RFCOMM
+  };
+
+  // File descriptor and socket type of the socket.
+  const int fd_;
+  SocketType socket_type_;
+
+  // Last error message, set during Receive() and Send() and retrieved using
+  // GetLastErrorMessage().
+  std::string error_message_;
+
+  DISALLOW_COPY_AND_ASSIGN(BluetoothSocketExperimentalChromeOS);
+};
+
+}  // namespace chromeos
+
+#endif  // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_EXPERIMENTAL_CHROMEOS_H_