| // 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_endpoint_service_provider.h" |
| |
| #include <stddef.h> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/threading/platform_thread.h" |
| #include "dbus/exported_object.h" |
| #include "device/bluetooth/dbus/bluetooth_media_transport_client.h" |
| #include "device/bluetooth/dbus/bluez_dbus_manager.h" |
| #include "device/bluetooth/dbus/fake_bluetooth_media_endpoint_service_provider.h" |
| |
| namespace { |
| |
| // TODO(mcchou): Move these constants to dbus/service_constants.h. |
| // Bluetooth Media Endpoint service identifier. |
| const char kBluetoothMediaEndpointInterface[] = "org.bluez.MediaEndpoint1"; |
| |
| // Method names in Bluetooth Media Endpoint interface. |
| const char kSetConfiguration[] = "SetConfiguration"; |
| const char kSelectConfiguration[] = "SelectConfiguration"; |
| const char kClearConfiguration[] = "ClearConfiguration"; |
| const char kRelease[] = "Release"; |
| |
| const uint8_t kInvalidCodec = 0xff; |
| const char kInvalidState[] = "unknown"; |
| |
| } // namespace |
| |
| namespace bluez { |
| |
| // The BluetoothMediaEndopintServiceProvider implementation used in production. |
| class DEVICE_BLUETOOTH_EXPORT BluetoothMediaEndpointServiceProviderImpl |
| : public BluetoothMediaEndpointServiceProvider { |
| public: |
| BluetoothMediaEndpointServiceProviderImpl(dbus::Bus* bus, |
| const dbus::ObjectPath& object_path, |
| Delegate* delegate) |
| : origin_thread_id_(base::PlatformThread::CurrentId()), |
| bus_(bus), |
| delegate_(delegate), |
| object_path_(object_path), |
| weak_ptr_factory_(this) { |
| VLOG(1) << "Creating Bluetooth Media Endpoint: " << object_path_.value(); |
| DCHECK(bus_); |
| DCHECK(delegate_); |
| DCHECK(object_path_.IsValid()); |
| |
| exported_object_ = bus_->GetExportedObject(object_path_); |
| |
| exported_object_->ExportMethod( |
| kBluetoothMediaEndpointInterface, kSetConfiguration, |
| base::Bind(&BluetoothMediaEndpointServiceProviderImpl::SetConfiguration, |
| weak_ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, |
| weak_ptr_factory_.GetWeakPtr())); |
| |
| exported_object_->ExportMethod( |
| kBluetoothMediaEndpointInterface, kSelectConfiguration, |
| base::Bind( |
| &BluetoothMediaEndpointServiceProviderImpl::SelectConfiguration, |
| weak_ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, |
| weak_ptr_factory_.GetWeakPtr())); |
| |
| exported_object_->ExportMethod( |
| kBluetoothMediaEndpointInterface, kClearConfiguration, |
| base::Bind( |
| &BluetoothMediaEndpointServiceProviderImpl::ClearConfiguration, |
| weak_ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, |
| weak_ptr_factory_.GetWeakPtr())); |
| |
| exported_object_->ExportMethod( |
| kBluetoothMediaEndpointInterface, kRelease, |
| base::Bind(&BluetoothMediaEndpointServiceProviderImpl::Release, |
| weak_ptr_factory_.GetWeakPtr()), |
| base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| ~BluetoothMediaEndpointServiceProviderImpl() override { |
| VLOG(1) << "Cleaning up Bluetooth Media Endpoint: " << object_path_.value(); |
| |
| bus_->UnregisterExportedObject(object_path_); |
| } |
| |
| private: |
| // Returns true if the current thread is on the origin thread, false |
| // otherwise. |
| bool OnOriginThread() const { |
| return base::PlatformThread::CurrentId() == origin_thread_id_; |
| } |
| |
| // Called by dbus:: when a method is exported. |
| void OnExported(const std::string& interface_name, |
| const std::string& method_name, |
| bool success) { |
| LOG_IF(ERROR, !success) << "Failed to export " << interface_name << "." |
| << method_name; |
| } |
| |
| // Called by dbus:: when the remote device connects to the Media Endpoint. |
| void SetConfiguration(dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| VLOG(1) << "SetConfiguration"; |
| |
| DCHECK(OnOriginThread()); |
| DCHECK(delegate_); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::ObjectPath transport_path; |
| dbus::MessageReader property_reader(method_call); |
| if (!reader.PopObjectPath(&transport_path) || |
| !reader.PopArray(&property_reader)) { |
| LOG(ERROR) << "SetConfiguration called with incorrect parameters: " |
| << method_call->ToString(); |
| return; |
| } |
| |
| // Parses |properties| and passes the property set as a |
| // Delegate::TransportProperties structure to |delegate_|. |
| Delegate::TransportProperties properties; |
| while (property_reader.HasMoreData()) { |
| dbus::MessageReader dict_entry_reader(nullptr); |
| std::string key; |
| if (!property_reader.PopDictEntry(&dict_entry_reader) || |
| !dict_entry_reader.PopString(&key)) { |
| LOG(ERROR) << "SetConfiguration called with incorrect parameters: " |
| << method_call->ToString(); |
| } else if (key == BluetoothMediaTransportClient::kDeviceProperty) { |
| dict_entry_reader.PopVariantOfObjectPath(&properties.device); |
| } else if (key == BluetoothMediaTransportClient::kUUIDProperty) { |
| dict_entry_reader.PopVariantOfString(&properties.uuid); |
| } else if (key == BluetoothMediaTransportClient::kCodecProperty) { |
| dict_entry_reader.PopVariantOfByte(&properties.codec); |
| } else if (key == BluetoothMediaTransportClient::kConfigurationProperty) { |
| dbus::MessageReader variant_reader(nullptr); |
| const uint8_t* bytes = nullptr; |
| size_t length = 0; |
| dict_entry_reader.PopVariant(&variant_reader); |
| variant_reader.PopArrayOfBytes(&bytes, &length); |
| properties.configuration.assign(bytes, bytes + length); |
| } else if (key == BluetoothMediaTransportClient::kStateProperty) { |
| dict_entry_reader.PopVariantOfString(&properties.state); |
| } else if (key == BluetoothMediaTransportClient::kDelayProperty) { |
| properties.delay.reset(new uint16_t()); |
| dict_entry_reader.PopVariantOfUint16(properties.delay.get()); |
| } else if (key == BluetoothMediaTransportClient::kVolumeProperty) { |
| properties.volume.reset(new uint16_t()); |
| dict_entry_reader.PopVariantOfUint16(properties.volume.get()); |
| } |
| } |
| |
| if (properties.codec != kInvalidCodec && |
| properties.state != kInvalidState) { |
| delegate_->SetConfiguration(transport_path, properties); |
| } else { |
| LOG(ERROR) << "SetConfiguration called with incorrect parameters: " |
| << method_call->ToString(); |
| } |
| |
| response_sender.Run(dbus::Response::FromMethodCall(method_call)); |
| } |
| |
| // Called by dbus:: when the remote device receives the configuration for |
| // media transport. |
| void SelectConfiguration( |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| VLOG(1) << "SelectConfiguration"; |
| |
| DCHECK(OnOriginThread()); |
| DCHECK(delegate_); |
| |
| dbus::MessageReader reader(method_call); |
| const uint8_t* capabilities = nullptr; |
| size_t length = 0; |
| if (!reader.PopArrayOfBytes(&capabilities, &length)) { |
| LOG(ERROR) << "SelectConfiguration called with incorrect parameters: " |
| << method_call->ToString(); |
| return; |
| } |
| |
| std::vector<uint8_t> configuration(capabilities, capabilities + length); |
| |
| // |delegate_| generates the response to |SelectConfiguration| and sends it |
| // back via |callback|. |
| Delegate::SelectConfigurationCallback callback = base::Bind( |
| &BluetoothMediaEndpointServiceProviderImpl::OnConfiguration, |
| weak_ptr_factory_.GetWeakPtr(), method_call, response_sender); |
| |
| delegate_->SelectConfiguration(configuration, callback); |
| } |
| |
| // Called by dbus:: when the remote device is about to close the connection. |
| void ClearConfiguration( |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| VLOG(1) << "ClearConfiguration"; |
| |
| DCHECK(OnOriginThread()); |
| DCHECK(delegate_); |
| |
| dbus::MessageReader reader(method_call); |
| dbus::ObjectPath transport_path; |
| if (!reader.PopObjectPath(&transport_path)) { |
| LOG(ERROR) << "ClearConfiguration called with incorrect parameters: " |
| << method_call->ToString(); |
| return; |
| } |
| |
| delegate_->ClearConfiguration(transport_path); |
| |
| response_sender.Run(dbus::Response::FromMethodCall(method_call)); |
| } |
| |
| // Called by Bluetooth daemon to do the clean up after unregistering the Media |
| // Endpoint. |
| void Release(dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| VLOG(1) << "Release"; |
| |
| DCHECK(OnOriginThread()); |
| DCHECK(delegate_); |
| |
| delegate_->Released(); |
| |
| response_sender.Run(dbus::Response::FromMethodCall(method_call)); |
| } |
| |
| // Called by Delegate to response to a method requiring transport |
| // configuration. |
| void OnConfiguration(dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender, |
| const std::vector<uint8_t>& configuration) { |
| VLOG(1) << "OnConfiguration"; |
| |
| DCHECK(OnOriginThread()); |
| |
| // Generates the response to the method call. |
| scoped_ptr<dbus::Response> response( |
| dbus::Response::FromMethodCall(method_call)); |
| dbus::MessageWriter writer(response.get()); |
| if (configuration.empty()) { |
| LOG(ERROR) << "OnConfiguration called with empty configuration."; |
| writer.AppendArrayOfBytes(nullptr, 0); |
| } else { |
| writer.AppendArrayOfBytes(&configuration[0], configuration.size()); |
| } |
| response_sender.Run(std::move(response)); |
| } |
| |
| // Origin thread (i.e. the UI thread in production). |
| base::PlatformThreadId origin_thread_id_; |
| |
| // D-Bus Bus object is exported on. |
| dbus::Bus* bus_; |
| |
| // All incoming method calls are passed on to |delegate_|. |callback| passed |
| // to |delegate+| will generate the response for those methods whose returns |
| // are non-void. |
| Delegate* delegate_; |
| |
| // D-Bus object path of the object we are exporting, kept so we can unregister |
| // again in you destructor. |
| dbus::ObjectPath object_path_; |
| |
| // D-Bus object we are exporting, owned by this object. |
| scoped_refptr<dbus::ExportedObject> exported_object_; |
| |
| // Weak pointer factory for generating 'this' printers that might live longer |
| // than we do. |
| // Note This should remain the last member so it'll be destroyed and |
| // invalidate it's weak pointers before any other members are destroyed. |
| base::WeakPtrFactory<BluetoothMediaEndpointServiceProviderImpl> |
| weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BluetoothMediaEndpointServiceProviderImpl); |
| }; |
| |
| BluetoothMediaEndpointServiceProvider::Delegate::TransportProperties:: |
| TransportProperties() |
| : codec(kInvalidCodec), state(kInvalidState) {} |
| |
| BluetoothMediaEndpointServiceProvider::Delegate::TransportProperties:: |
| ~TransportProperties() {} |
| |
| BluetoothMediaEndpointServiceProvider::BluetoothMediaEndpointServiceProvider() { |
| } |
| |
| BluetoothMediaEndpointServiceProvider:: |
| ~BluetoothMediaEndpointServiceProvider() {} |
| |
| BluetoothMediaEndpointServiceProvider* |
| BluetoothMediaEndpointServiceProvider::Create( |
| dbus::Bus* bus, |
| const dbus::ObjectPath& object_path, |
| Delegate* delegate) { |
| // Returns a real implementation. |
| if (!bluez::BluezDBusManager::Get()->IsUsingStub()) { |
| return new BluetoothMediaEndpointServiceProviderImpl(bus, object_path, |
| delegate); |
| } |
| // Returns a fake implementation. |
| return new FakeBluetoothMediaEndpointServiceProvider(object_path, delegate); |
| } |
| |
| } // namespace bluez |