Refactor DBusThreadManager to split away BT clients.

chromeos/dbus/bluetooth_media_endpoint_service_provider.h

-// Copyright 2014 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 CHROMEOS_DBUS_BLUETOOTH_MEDIA_ENDPOINT_SERVICE_PROVIDER_H_
-#define CHROMEOS_DBUS_BLUETOOTH_MEDIA_ENDPOINT_SERVICE_PROVIDER_H_
-
-#include <string>
-#include <vector>
-
-#include "base/callback.h"
-#include "chromeos/chromeos_export.h"
-#include "dbus/bus.h"
-#include "dbus/message.h"
-#include "dbus/object_path.h"
-
-namespace chromeos {
-
-// BluetoothMediaEndpointServiceProvider is used to provide a D-Bus object that
-// the Bluetooth daemon can commuicate with to serve as a media source/sink.
-//
-// Instantiate with a chosen D-Bus object path and a delegate object, and pass
-// the D-Bus object path as |endpoint_path| argument to the
-// chromeos::BluetoothMediaClient::RegisterEndoint() method.
-//
-// After initiating a connection between an audio source and an audio sink, the
-// Bluetooth daemon will make calls to this endpoint object and they will be
-// passed to user's Delegate object for handling. For SelectConfiguration method
-// the response is returned using the SelectConfiguration callback.
-class CHROMEOS_EXPORT BluetoothMediaEndpointServiceProvider {
- public:
-  // Delegate is the interface for reacting to endpoint requests. User
-  // applications will implement this interface to handle either A2DP Sink or
-  // Source.
-  class Delegate {
-   public:
-    // Transport-specific properties.
-    struct CHROMEOS_EXPORT TransportProperties {
-      TransportProperties();
-      ~TransportProperties();
-
-      // The path to the device object which the transport is connected to.
-      dbus::ObjectPath device;
-
-      // The UUID of the profile which the transport is for.
-      std::string uuid;
-
-      // The Codec value agreed by the remote device and used by the media
-      // transport.
-      uint8_t codec;
-
-      // The configuration used by the media transport.
-      std::vector<uint8_t> configuration;
-
-      // The state of the transport. The values can be one of the following:
-      // "idle": not streaming
-      // "pending": streaming but not acquired
-      // "active": streaming and acquired
-      std::string state;
-
-      // The unit of transport is in 1/10 millisecond. Optional.
-      scoped_ptr<uint16_t> delay;
-
-      // The volume level of the transport. Optional.
-      scoped_ptr<uint16_t> volume;
-
-     private:
-      DISALLOW_COPY_AND_ASSIGN(TransportProperties);
-    };
-
-    virtual ~Delegate() {}
-
-    // SelectConfigurationCallback is used for the SelectConfiguration() method,
-    // it should be called with two arguements, the |configuration| which is
-    // agreed by the application and the |length| of |configuration|.
-    typedef base::Callback<void(const std::vector<uint8_t>&)>
-        SelectConfigurationCallback;
-
-    // This method will be called after an Audio Source receives the agreed
-    // capabilities from the Audio Sink to set the configuration for the
-    // media transport object. |transport_path| is the path to the
-    // MediaTransport object, and |properties| are the properties for that
-    // MediaTransport object.
-    virtual void SetConfiguration(const dbus::ObjectPath& transport_path,
-                                  const TransportProperties& properties) = 0;
-
-    // This method will be called when an Audio Source connects to an Audio Sink
-    // and asks it to decide the configuration to be used during the oncoming
-    // streaming. Audio Sources provide |capabilities| as a reference, where
-    // a user application can use these |capabilities| to figure out
-    // a well-matched configuration and return it to the Audio Source via
-    // |callback|.
-    virtual void SelectConfiguration(
-        const std::vector<uint8_t>& capabilities,
-        const SelectConfigurationCallback& callback) = 0;
-
-    // This method will be called when an Audio Source disconnects from an Audio
-    // Sink. A user application is supposed to clear any of its resources which
-    // it keeps for that particular connection. |transport_path| is the Media
-    // Transport object which has been kept by an endpoint during the
-    // connection.
-    virtual void ClearConfiguration(const dbus::ObjectPath& transport_path) = 0;
-
-    // This method will be called when the Bluetooth daemon unregisters the
-    // Media Endpoint. Media Endpoint objects can use this method to clean up
-    // tasks. There is no need to unregister the endpoint, since when this
-    // method gets called, that endpoint has been unregistered. This corresponds
-    // to the org.bluez.MediaEndpoint1.Release and is renamed to avoid
-    // a conflict with base::RefCounted<T>.
-    virtual void Released() = 0;
-  };
-
-  virtual ~BluetoothMediaEndpointServiceProvider();
-
-  // Creates the instance where |bus| is the D-Bus bus connection to export the
-  // object onto, |object_path| is the object path that it should have and
-  // |delegate| is the object to which all method calls will be passed and
-  // responses generated from.
-  static BluetoothMediaEndpointServiceProvider* Create(
-      dbus::Bus* bus,
-      const dbus::ObjectPath& object_path,
-      Delegate* delegate);
-
- protected:
-  BluetoothMediaEndpointServiceProvider();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BluetoothMediaEndpointServiceProvider);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_BLUETOOTH_MEDIA_ENDPOINT_SERVICE_PROVIDER_H_