1 files changed, 227 insertions, 0 deletions
diff --git a/device/bluetooth/dbus/bluetooth_media_client.cc b/device/bluetooth/dbus/bluetooth_media_client.cc
new file mode 100644
index 0000000..0927d45
--- /dev/null
+++ b/device/bluetooth/dbus/bluetooth_media_client.cc
@@ -0,0 +1,227 @@
+// 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/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