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// 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_CLIENT_H_
#define CHROMEOS_DBUS_BLUETOOTH_MEDIA_CLIENT_H_
#include <memory>
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/values.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/dbus_client.h"
#include "dbus/object_path.h"
#include "dbus/property.h"
namespace chromeos {
// BluetoothMediaClient is used to communicate with the Media interface of a
// local Bluetooth adapter.
class CHROMEOS_EXPORT BluetoothMediaClient : public DBusClient {
public:
// Properties used to register a Media Endpoint.
struct CHROMEOS_EXPORT EndpointProperties {
EndpointProperties();
~EndpointProperties();
// UUID of the profile implemented by the endpoint.
std::string uuid;
// Assigned codec value supported by the endpoint. The byte should match the
// codec specification indicated by the UUID.
// Since SBC codec is mandatory for A2DP, the default value of codec should
// be 0x00.
uint8_t codec;
// Capabilities of the endpoints. The order of bytes should match the bit
// arrangement in the specification indicated by the UUID.
std::vector<uint8_t> capabilities;
};
class Observer {
public:
virtual ~Observer() {}
// Called when the Media object with object path |object_path| is added to
// the system.
virtual void MediaAdded(const dbus::ObjectPath& object_path) {}
// Called when the Media object with object path |object_path| is removed
// from the system.
virtual void MediaRemoved(const dbus::ObjectPath& object_path) {}
};
// Constants used to indicate exceptional error conditions.
static const char kNoResponseError[];
// The string representation for the 128-bit UUID for A2DP Sink.
static const char kBluetoothAudioSinkUUID[];
~BluetoothMediaClient() override;
// The ErrorCallback is used by media API methods to indicate failure.
// It receives two arguments: the name of the error in |error_name| and
// an optional message in |error_message|.
typedef base::Callback<void(const std::string& error_name,
const std::string& error_message)> ErrorCallback;
// Adds and removes observers for events on all Media objects. Check the
// |object_path| parameter of observer methods to determine which Media object
// is issuing the event.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Registers a media endpoint to sender at the D-Bus object path
// |endpoint_path|. |properties| specifies profile UUID which the endpoint is
// for, Codec implemented by the endpoint and the Capabilities of the
// endpoint.
virtual void RegisterEndpoint(const dbus::ObjectPath& object_path,
const dbus::ObjectPath& endpoint_path,
const EndpointProperties& properties,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// Unregisters the media endpoint with the D-Bus object path |endpoint_path|.
virtual void UnregisterEndpoint(const dbus::ObjectPath& object_path,
const dbus::ObjectPath& endpoint_path,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// TODO(mcchou): The RegisterPlayer and UnregisterPlayer methods are not
// included, since they are not used. These two methods may be added later.
static BluetoothMediaClient* Create();
protected:
BluetoothMediaClient();
private:
DISALLOW_COPY_AND_ASSIGN(BluetoothMediaClient);
};
} // namespace chromeos
#endif // CHROMEOS_DBUS_BLUETOOTH_MEDIA_CLIENT_H_
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