Reland "Add Linux support for the Bluetooth API"

device/bluetooth/bluetooth_audio_sink_chromeos.h

Index: device/bluetooth/bluetooth_audio_sink_chromeos.h
diff --git a/device/bluetooth/bluetooth_audio_sink_chromeos.h b/device/bluetooth/bluetooth_audio_sink_chromeos.h
deleted file mode 100644
index 750b31de5f9589d1bbb833732487815a674d104c..0000000000000000000000000000000000000000
--- a/device/bluetooth/bluetooth_audio_sink_chromeos.h
+++ /dev/null
@@ -1,222 +0,0 @@
-// Copyright 2015 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_AUDIO_SINK_CHROMEOS_H_
-#define DEVICE_BLUETOOTH_BLUETOOTH_AUDIO_SINK_CHROMEOS_H_
-
-#include <stdint.h>
-#include <string>
-#include <vector>
-
-#include "base/files/file.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "base/observer_list.h"
-#include "dbus/file_descriptor.h"
-#include "dbus/object_path.h"
-#include "device/bluetooth/bluetooth_adapter.h"
-#include "device/bluetooth/bluetooth_audio_sink.h"
-#include "device/bluetooth/bluetooth_export.h"
-#include "device/bluetooth/dbus/bluetooth_media_client.h"
-#include "device/bluetooth/dbus/bluetooth_media_endpoint_service_provider.h"
-#include "device/bluetooth/dbus/bluetooth_media_transport_client.h"
-
-namespace chromeos {
-
-class BluetoothAudioSinkChromeOSTest;
-
-class DEVICE_BLUETOOTH_EXPORT BluetoothAudioSinkChromeOS
-    : public device::BluetoothAudioSink,
-      public device::BluetoothAdapter::Observer,
-      public bluez::BluetoothMediaClient::Observer,
-      public bluez::BluetoothMediaTransportClient::Observer,
-      public bluez::BluetoothMediaEndpointServiceProvider::Delegate,
-      public base::MessageLoopForIO::Watcher {
- public:
-  explicit BluetoothAudioSinkChromeOS(
-      scoped_refptr<device::BluetoothAdapter> adapter);
-
-  // device::BluetoothAudioSink overrides.
-  // Unregisters a BluetoothAudioSink. |callback| should handle
-  // the clean-up after the audio sink is deleted successfully, otherwise
-  // |error_callback| will be called.
-  void Unregister(
-      const base::Closure& callback,
-      const device::BluetoothAudioSink::ErrorCallback& error_callback) override;
-  void AddObserver(BluetoothAudioSink::Observer* observer) override;
-  void RemoveObserver(BluetoothAudioSink::Observer* observer) override;
-  device::BluetoothAudioSink::State GetState() const override;
-  uint16_t GetVolume() const override;
-
-  // Registers a BluetoothAudioSink. User applications can use |options| to
-  // configure the audio sink. |callback| will be executed if the audio sink is
-  // successfully registered, otherwise |error_callback| will be called. Called
-  // by BluetoothAdapterChromeOS.
-  void Register(
-      const device::BluetoothAudioSink::Options& options,
-      const base::Closure& callback,
-      const device::BluetoothAudioSink::ErrorCallback& error_callback);
-
-  // Returns a pointer to the media endpoint object. This function should be
-  // used for testing purpose only.
-  bluez::BluetoothMediaEndpointServiceProvider* GetEndpointServiceProvider();
-
- private:
-  ~BluetoothAudioSinkChromeOS() override;
-
-  // device::BluetoothAdapter::Observer overrides.
-  void AdapterPresentChanged(device::BluetoothAdapter* adapter,
-                             bool present) override;
-  void AdapterPoweredChanged(device::BluetoothAdapter* adapter,
-                             bool powered) override;
-
-  // bluez::BluetoothMediaClient::Observer overrides.
-  void MediaRemoved(const dbus::ObjectPath& object_path) override;
-
-  // bluez::BluetoothMediaTransportClient::Observer overrides.
-  void MediaTransportRemoved(const dbus::ObjectPath& object_path) override;
-  void MediaTransportPropertyChanged(const dbus::ObjectPath& object_path,
-                                     const std::string& property_name) override;
-
-  // bluez::BluetoothMediaEndpointServiceProvider::Delegate overrides.
-  void SetConfiguration(const dbus::ObjectPath& transport_path,
-                        const TransportProperties& properties) override;
-  void SelectConfiguration(
-      const std::vector<uint8_t>& capabilities,
-      const SelectConfigurationCallback& callback) override;
-  void ClearConfiguration(const dbus::ObjectPath& transport_path) override;
-  void Released() override;
-
-  // base::MessageLoopForIO::Watcher overrides.
-  void OnFileCanReadWithoutBlocking(int fd) override;
-  void OnFileCanWriteWithoutBlocking(int fd) override;
-
-  // Acquires file descriptor via current transport object when the state change
-  // is triggered by MediaTransportPropertyChanged.
-  void AcquireFD();
-
-  // Watches if there is any available data from |fd_|.
-  void WatchFD();
-
-  // Stops watching |fd_| and resets |fd_|.
-  void StopWatchingFD();
-
-  // Reads from the file descriptor acquired via Media Transport object and
-  // notify |observer_| while the audio data is available.
-  void ReadFromFile();
-
-  // Called when the state property of BluetoothMediaTransport has been updated.
-  void StateChanged(device::BluetoothAudioSink::State state);
-
-  // Called when the volume property of BluetoothMediaTransport has been
-  // updated.
-  void VolumeChanged(uint16_t volume);
-
-  // Called when the registration of Media Endpoint has succeeded.
-  void OnRegisterSucceeded(const base::Closure& callback);
-
-  // Called when the registration of Media Endpoint failed.
-  void OnRegisterFailed(
-      const device::BluetoothAudioSink::ErrorCallback& error_callback,
-      const std::string& error_name,
-      const std::string& error_message);
-
-  // Called when the unregistration of Media Endpoint has succeeded. The
-  // clean-up of media, media transport and media endpoint will be handled here.
-  void OnUnregisterSucceeded(const base::Closure& callback);
-
-  // Called when the unregistration of Media Endpoint failed.
-  void OnUnregisterFailed(
-      const device::BluetoothAudioSink::ErrorCallback& error_callback,
-      const std::string& error_name,
-      const std::string& error_message);
-
-  // Called when the file descriptor, read MTU and write MTU are retrieved
-  // successfully using |transport_path_|.
-  void OnAcquireSucceeded(dbus::FileDescriptor* fd,
-                          const uint16_t read_mtu,
-                          const uint16_t write_mtu);
-
-  // Called when acquiring the file descriptor, read MTU and write MTU failed.
-  void OnAcquireFailed(const std::string& error_name,
-                       const std::string& error_message);
-
-  // Called when the file descriptor is released successfully.
-  void OnReleaseFDSucceeded();
-
-  // Called when it failed to release file descriptor.
-  void OnReleaseFDFailed(const std::string& error_name,
-                         const std::string& error_message);
-
-  // Helper functions to clean up media, media transport and media endpoint.
-  // Called when the |state_| changes to either STATE_INVALID or
-  // STATE_DISCONNECTED.
-  void ResetMedia();
-  void ResetTransport();
-  void ResetEndpoint();
-
-  // The connection state between the BluetoothAudioSinkChromeOS and the remote
-  // device.
-  device::BluetoothAudioSink::State state_;
-
-  // The volume control by the remote device during the streaming. The valid
-  // range of volume is 0-127, and 128 is used to represent invalid volume.
-  uint16_t volume_;
-
-  // Read MTU of the file descriptor acquired via Media Transport object.
-  uint16_t read_mtu_;
-
-  // Write MTU of the file descriptor acquired via Media Transport object.
-  uint16_t write_mtu_;
-
-  // Flag for logging the read failure in ReadFromFD.
-  bool read_has_failed_;
-
-  // The file which takes ownership of the file descriptor acquired via Media
-  // Transport object.
-  scoped_ptr<base::File> file_;
-
-  // To avoid reallocation of memory, data will be updated only when |read_mtu_|
-  // changes.
-  scoped_ptr<char[]> data_;
-
-  // File descriptor watcher for the file descriptor acquired via Media
-  // Transport object.
-  base::MessageLoopForIO::FileDescriptorWatcher fd_read_watcher_;
-
-  // Object path of the media object being used.
-  dbus::ObjectPath media_path_;
-
-  // Object path of the transport object being used.
-  dbus::ObjectPath transport_path_;
-
-  // Object path of the media endpoint object being used.
-  dbus::ObjectPath endpoint_path_;
-
-  // BT adapter which the audio sink binds to. |adapter_| should outlive
-  // a BluetoothAudioSinkChromeOS object.
-  scoped_refptr<device::BluetoothAdapter> adapter_;
-
-  // Options used to initiate Media Endpoint and select configuration for the
-  // transport.
-  device::BluetoothAudioSink::Options options_;
-
-  // Media Endpoint object owned by the audio sink object.
-  scoped_ptr<bluez::BluetoothMediaEndpointServiceProvider> media_endpoint_;
-
-  // List of observers interested in event notifications from us. Objects in
-  // |observers_| are expected to outlive a BluetoothAudioSinkChromeOS object.
-  base::ObserverList<BluetoothAudioSink::Observer> observers_;
-
-  // Note: This should remain the last member so it'll be destroyed and
-  // invalidate its weak pointers before any other members are destroyed.
-  base::WeakPtrFactory<BluetoothAudioSinkChromeOS> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(BluetoothAudioSinkChromeOS);
-};
-
-}  // namespace chromeos
-
-#endif  // DEVICE_BLUETOOTH_BLUETOOTH_AUDIO_SINK_CHROMEOS_H_