blob: 3815bc8778c8ada5c4da81aa1f42be2fd9454375 [file] [log] [blame]
// 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.
#include "device/bluetooth/dbus/bluetooth_media_client.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/observer_list.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_manager.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace {
// Since there is no property associated with Media objects, an empty callback
// is used.
void DoNothing(const std::string& property_name) {}
// TODO(mcchou): Add these service constants into dbus/service_constants.h
// later.
const char kBluetoothMediaInterface[] = "org.bluez.Media1";
// Method names supported by Media Interface.
const char kRegisterEndpoint[] = "RegisterEndpoint";
const char kUnregisterEndpoint[] = "UnregisterEndpoint";
// The set of properties which are used to register a media endpoint.
const char kUUIDEndpointProperty[] = "UUID";
const char kCodecEndpointProperty[] = "Codec";
const char kCapabilitiesEndpointProperty[] = "Capabilities";
} // namespace
namespace bluez {
// static
const char BluetoothMediaClient::kNoResponseError[] =
"org.chromium.Error.NoResponse";
// static
const char BluetoothMediaClient::kBluetoothAudioSinkUUID[] =
"0000110b-0000-1000-8000-00805f9b34fb";
BluetoothMediaClient::EndpointProperties::EndpointProperties() : codec(0x00) {}
BluetoothMediaClient::EndpointProperties::~EndpointProperties() {}
class BluetoothMediaClientImpl : public BluetoothMediaClient,
dbus::ObjectManager::Interface {
public:
BluetoothMediaClientImpl()
: object_manager_(nullptr), weak_ptr_factory_(this) {}
~BluetoothMediaClientImpl() override {
object_manager_->UnregisterInterface(kBluetoothMediaInterface);
}
// dbus::ObjectManager::Interface overrides.
dbus::PropertySet* CreateProperties(
dbus::ObjectProxy* object_proxy,
const dbus::ObjectPath& object_path,
const std::string& interface_name) override {
return new dbus::PropertySet(object_proxy, interface_name,
base::Bind(&DoNothing));
}
void ObjectAdded(const dbus::ObjectPath& object_path,
const std::string& interface_name) override {
VLOG(1) << "Remote Media added: " << object_path.value();
FOR_EACH_OBSERVER(BluetoothMediaClient::Observer, observers_,
MediaAdded(object_path));
}
void ObjectRemoved(const dbus::ObjectPath& object_path,
const std::string& interface_name) override {
VLOG(1) << "Remote Media removed: " << object_path.value();
FOR_EACH_OBSERVER(BluetoothMediaClient::Observer, observers_,
MediaRemoved(object_path));
}
// BluetoothMediaClient overrides.
void AddObserver(BluetoothMediaClient::Observer* observer) override {
DCHECK(observer);
observers_.AddObserver(observer);
}
void RemoveObserver(BluetoothMediaClient::Observer* observer) override {
DCHECK(observer);
observers_.RemoveObserver(observer);
}
void RegisterEndpoint(const dbus::ObjectPath& object_path,
const dbus::ObjectPath& endpoint_path,
const EndpointProperties& properties,
const base::Closure& callback,
const ErrorCallback& error_callback) override {
VLOG(1) << "RegisterEndpoint - endpoint: " << endpoint_path.value();
dbus::MethodCall method_call(kBluetoothMediaInterface, kRegisterEndpoint);
dbus::MessageWriter writer(&method_call);
dbus::MessageWriter array_writer(nullptr);
dbus::MessageWriter dict_entry_writer(nullptr);
// Send the path to the endpoint.
writer.AppendObjectPath(endpoint_path);
writer.OpenArray("{sv}", &array_writer);
// Send UUID.
array_writer.OpenDictEntry(&dict_entry_writer);
dict_entry_writer.AppendString(kUUIDEndpointProperty);
dict_entry_writer.AppendVariantOfString(properties.uuid);
array_writer.CloseContainer(&dict_entry_writer);
// Send Codec.
array_writer.OpenDictEntry(&dict_entry_writer);
dict_entry_writer.AppendString(kCodecEndpointProperty);
dict_entry_writer.AppendVariantOfByte(properties.codec);
array_writer.CloseContainer(&dict_entry_writer);
// Send Capabilities.
dbus::MessageWriter variant_writer(nullptr);
array_writer.OpenDictEntry(&dict_entry_writer);
dict_entry_writer.AppendString(kCapabilitiesEndpointProperty);
dict_entry_writer.OpenVariant("ay", &variant_writer);
variant_writer.AppendArrayOfBytes(properties.capabilities.data(),
properties.capabilities.size());
dict_entry_writer.CloseContainer(&variant_writer);
array_writer.CloseContainer(&dict_entry_writer);
writer.CloseContainer(&array_writer);
// Get Object Proxy based on the service name and the service path and call
// RegisterEndpoint medthod.
scoped_refptr<dbus::ObjectProxy> object_proxy(
object_manager_->GetObjectProxy(object_path));
object_proxy->CallMethodWithErrorCallback(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&BluetoothMediaClientImpl::OnSuccess,
weak_ptr_factory_.GetWeakPtr(), callback),
base::Bind(&BluetoothMediaClientImpl::OnError,
weak_ptr_factory_.GetWeakPtr(), error_callback));
}
void UnregisterEndpoint(const dbus::ObjectPath& object_path,
const dbus::ObjectPath& endpoint_path,
const base::Closure& callback,
const ErrorCallback& error_callback) override {
VLOG(1) << "UnregisterEndpoint - endpoint: " << endpoint_path.value();
dbus::MethodCall method_call(kBluetoothMediaInterface, kUnregisterEndpoint);
// Send the path to the endpoint.
dbus::MessageWriter writer(&method_call);
writer.AppendObjectPath(endpoint_path);
// Get Object Proxy based on the service name and the service path and call
// RegisterEndpoint medthod.
scoped_refptr<dbus::ObjectProxy> object_proxy(
object_manager_->GetObjectProxy(object_path));
object_proxy->CallMethodWithErrorCallback(
&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&BluetoothMediaClientImpl::OnSuccess,
weak_ptr_factory_.GetWeakPtr(), callback),
base::Bind(&BluetoothMediaClientImpl::OnError,
weak_ptr_factory_.GetWeakPtr(), error_callback));
}
protected:
void Init(dbus::Bus* bus) override {
DCHECK(bus);
object_manager_ = bus->GetObjectManager(
bluetooth_object_manager::kBluetoothObjectManagerServiceName,
dbus::ObjectPath(
bluetooth_object_manager::kBluetoothObjectManagerServicePath));
object_manager_->RegisterInterface(kBluetoothMediaInterface, this);
}
private:
// Called when a response for successful method call is received.
void OnSuccess(const base::Closure& callback, dbus::Response* response) {
DCHECK(response);
callback.Run();
}
// Called when a response for a failed method call is received.
void OnError(const ErrorCallback& error_callback,
dbus::ErrorResponse* response) {
// Error response has an optional error message argument.
std::string error_name;
std::string error_message;
if (response) {
dbus::MessageReader reader(response);
error_name = response->GetErrorName();
reader.PopString(&error_message);
} else {
error_name = kNoResponseError;
}
error_callback.Run(error_name, error_message);
}
dbus::ObjectManager* object_manager_;
// List of observers interested in event notifications from us.
base::ObserverList<BluetoothMediaClient::Observer> observers_;
base::WeakPtrFactory<BluetoothMediaClientImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(BluetoothMediaClientImpl);
};
BluetoothMediaClient::BluetoothMediaClient() {}
BluetoothMediaClient::~BluetoothMediaClient() {}
BluetoothMediaClient* BluetoothMediaClient::Create() {
return new BluetoothMediaClientImpl();
}
} // namespace bluez