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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chromeos/dbus/bluetooth_media_endpoint_service_provider.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "base/memory/ref_counted.h" | |
| 10 #include "base/memory/scoped_ptr.h" | |
| 11 #include "base/threading/platform_thread.h" | |
| 12 #include "chromeos/dbus/bluetooth_media_transport_client.h" | |
| 13 #include "chromeos/dbus/dbus_thread_manager.h" | |
| 14 #include "chromeos/dbus/fake_bluetooth_media_endpoint_service_provider.h" | |
| 15 #include "dbus/exported_object.h" | |
| 16 | |
| 17 namespace { | |
| 18 | |
| 19 // TODO(mcchou): Move these constants to dbus/service_constants.h. | |
| 20 // Bluetooth Media Endpoint service identifier. | |
| 21 const char kBluetoothMediaEndpointInterface[] = "org.bluez.MediaEndpoint1"; | |
| 22 | |
| 23 // Method names in Bluetooth Media Endpoint interface. | |
| 24 const char kSetConfiguration[] = "SetConfiguration"; | |
| 25 const char kSelectConfiguration[] = "SelectConfiguration"; | |
| 26 const char kClearConfiguration[] = "ClearConfiguration"; | |
| 27 const char kRelease[] = "Release"; | |
| 28 | |
| 29 const uint8_t kInvalidCodec = 0xff; | |
| 30 const char kInvalidState[] = "unknown"; | |
| 31 | |
| 32 } // namespace | |
| 33 | |
| 34 namespace chromeos { | |
| 35 | |
| 36 // The BluetoothMediaEndopintServiceProvider implementation used in production. | |
| 37 class CHROMEOS_EXPORT BluetoothMediaEndpointServiceProviderImpl | |
| 38 : public BluetoothMediaEndpointServiceProvider { | |
| 39 public: | |
| 40 BluetoothMediaEndpointServiceProviderImpl(dbus::Bus* bus, | |
| 41 const dbus::ObjectPath& object_path, | |
| 42 Delegate* delegate) | |
| 43 : origin_thread_id_(base::PlatformThread::CurrentId()), | |
| 44 bus_(bus), | |
| 45 delegate_(delegate), | |
| 46 object_path_(object_path), | |
| 47 weak_ptr_factory_(this) { | |
| 48 VLOG(1) << "Creating Bluetooth Media Endpoint: " << object_path_.value(); | |
| 49 DCHECK(bus_); | |
| 50 DCHECK(delegate_); | |
| 51 DCHECK(object_path_.IsValid()); | |
| 52 | |
| 53 exported_object_ = bus_->GetExportedObject(object_path_); | |
| 54 | |
| 55 exported_object_->ExportMethod( | |
| 56 kBluetoothMediaEndpointInterface, | |
| 57 kSetConfiguration, | |
| 58 base::Bind( | |
| 59 &BluetoothMediaEndpointServiceProviderImpl::SetConfiguration, | |
| 60 weak_ptr_factory_.GetWeakPtr()), | |
| 61 base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, | |
| 62 weak_ptr_factory_.GetWeakPtr())); | |
| 63 | |
| 64 exported_object_->ExportMethod( | |
| 65 kBluetoothMediaEndpointInterface, | |
| 66 kSelectConfiguration, | |
| 67 base::Bind( | |
| 68 &BluetoothMediaEndpointServiceProviderImpl::SelectConfiguration, | |
| 69 weak_ptr_factory_.GetWeakPtr()), | |
| 70 base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, | |
| 71 weak_ptr_factory_.GetWeakPtr())); | |
| 72 | |
| 73 exported_object_->ExportMethod( | |
| 74 kBluetoothMediaEndpointInterface, | |
| 75 kClearConfiguration, | |
| 76 base::Bind( | |
| 77 &BluetoothMediaEndpointServiceProviderImpl::ClearConfiguration, | |
| 78 weak_ptr_factory_.GetWeakPtr()), | |
| 79 base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, | |
| 80 weak_ptr_factory_.GetWeakPtr())); | |
| 81 | |
| 82 exported_object_->ExportMethod( | |
| 83 kBluetoothMediaEndpointInterface, | |
| 84 kRelease, | |
| 85 base::Bind(&BluetoothMediaEndpointServiceProviderImpl::Release, | |
| 86 weak_ptr_factory_.GetWeakPtr()), | |
| 87 base::Bind(&BluetoothMediaEndpointServiceProviderImpl::OnExported, | |
| 88 weak_ptr_factory_.GetWeakPtr())); | |
| 89 } | |
| 90 | |
| 91 ~BluetoothMediaEndpointServiceProviderImpl() override { | |
| 92 VLOG(1) << "Cleaning up Bluetooth Media Endpoint: " | |
| 93 << object_path_.value(); | |
| 94 | |
| 95 bus_->UnregisterExportedObject(object_path_); | |
| 96 } | |
| 97 | |
| 98 private: | |
| 99 // Returns true if the current thread is on the origin thread, false | |
| 100 // otherwise. | |
| 101 bool OnOriginThread() const { | |
| 102 return base::PlatformThread::CurrentId() == origin_thread_id_; | |
| 103 } | |
| 104 | |
| 105 // Called by dbus:: when a method is exported. | |
| 106 void OnExported(const std::string& interface_name, | |
| 107 const std::string& method_name, | |
| 108 bool success) { | |
| 109 LOG_IF(ERROR, !success) << "Failed to export " << interface_name << "." | |
| 110 << method_name; | |
| 111 } | |
| 112 | |
| 113 // Called by dbus:: when the remote device connects to the Media Endpoint. | |
| 114 void SetConfiguration(dbus::MethodCall* method_call, | |
| 115 dbus::ExportedObject::ResponseSender response_sender) { | |
| 116 VLOG(1) << "SetConfiguration"; | |
| 117 | |
| 118 DCHECK(OnOriginThread()); | |
| 119 DCHECK(delegate_); | |
| 120 | |
| 121 dbus::MessageReader reader(method_call); | |
| 122 dbus::ObjectPath transport_path; | |
| 123 dbus::MessageReader property_reader(method_call); | |
| 124 if (!reader.PopObjectPath(&transport_path) || | |
| 125 !reader.PopArray(&property_reader)) { | |
| 126 LOG(ERROR) << "SetConfiguration called with incorrect parameters: " | |
| 127 << method_call->ToString(); | |
| 128 return; | |
| 129 } | |
| 130 | |
| 131 // Parses |properties| and passes the property set as a | |
| 132 // Delegate::TransportProperties structure to |delegate_|. | |
| 133 Delegate::TransportProperties properties; | |
| 134 while (property_reader.HasMoreData()) { | |
| 135 dbus::MessageReader dict_entry_reader(nullptr); | |
| 136 std::string key; | |
| 137 if (!property_reader.PopDictEntry(&dict_entry_reader) || | |
| 138 !dict_entry_reader.PopString(&key)) { | |
| 139 LOG(ERROR) << "SetConfiguration called with incorrect parameters: " | |
| 140 << method_call->ToString(); | |
| 141 } else if (key == BluetoothMediaTransportClient::kDeviceProperty) { | |
| 142 dict_entry_reader.PopVariantOfObjectPath(&properties.device); | |
| 143 } else if (key == BluetoothMediaTransportClient::kUUIDProperty) { | |
| 144 dict_entry_reader.PopVariantOfString(&properties.uuid); | |
| 145 } else if (key == BluetoothMediaTransportClient::kCodecProperty) { | |
| 146 dict_entry_reader.PopVariantOfByte(&properties.codec); | |
| 147 } else if (key == BluetoothMediaTransportClient::kConfigurationProperty) { | |
| 148 dbus::MessageReader variant_reader(nullptr); | |
| 149 const uint8_t* bytes = nullptr; | |
| 150 size_t length = 0; | |
| 151 dict_entry_reader.PopVariant(&variant_reader); | |
| 152 variant_reader.PopArrayOfBytes(&bytes, &length); | |
| 153 properties.configuration.assign(bytes, bytes + length); | |
| 154 } else if (key == BluetoothMediaTransportClient::kStateProperty) { | |
| 155 dict_entry_reader.PopVariantOfString(&properties.state); | |
| 156 } else if (key == BluetoothMediaTransportClient::kDelayProperty) { | |
| 157 properties.delay.reset(new uint16_t()); | |
| 158 dict_entry_reader.PopVariantOfUint16(properties.delay.get()); | |
| 159 } else if (key == BluetoothMediaTransportClient::kVolumeProperty) { | |
| 160 properties.volume.reset(new uint16_t()); | |
| 161 dict_entry_reader.PopVariantOfUint16(properties.volume.get()); | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 if (properties.codec != kInvalidCodec && | |
| 166 properties.state != kInvalidState) { | |
| 167 delegate_->SetConfiguration(transport_path, properties); | |
| 168 } else { | |
| 169 LOG(ERROR) << "SetConfiguration called with incorrect parameters: " | |
| 170 << method_call->ToString(); | |
| 171 } | |
| 172 | |
| 173 response_sender.Run(dbus::Response::FromMethodCall(method_call)); | |
| 174 } | |
| 175 | |
| 176 // Called by dbus:: when the remote device receives the configuration for | |
| 177 // media transport. | |
| 178 void SelectConfiguration( | |
| 179 dbus::MethodCall* method_call, | |
| 180 dbus::ExportedObject::ResponseSender response_sender) { | |
| 181 VLOG(1) << "SelectConfiguration"; | |
| 182 | |
| 183 DCHECK(OnOriginThread()); | |
| 184 DCHECK(delegate_); | |
| 185 | |
| 186 dbus::MessageReader reader(method_call); | |
| 187 const uint8_t* capabilities = nullptr; | |
| 188 size_t length = 0; | |
| 189 if (!reader.PopArrayOfBytes(&capabilities, &length)) { | |
| 190 LOG(ERROR) << "SelectConfiguration called with incorrect parameters: " | |
| 191 << method_call->ToString(); | |
| 192 return; | |
| 193 } | |
| 194 | |
| 195 std::vector<uint8_t> configuration(capabilities, capabilities + length); | |
| 196 | |
| 197 // |delegate_| generates the response to |SelectConfiguration| and sends it | |
| 198 // back via |callback|. | |
| 199 Delegate::SelectConfigurationCallback callback = base::Bind( | |
| 200 &BluetoothMediaEndpointServiceProviderImpl::OnConfiguration, | |
| 201 weak_ptr_factory_.GetWeakPtr(), | |
| 202 method_call, | |
| 203 response_sender); | |
| 204 | |
| 205 delegate_->SelectConfiguration(configuration, callback); | |
| 206 } | |
| 207 | |
| 208 // Called by dbus:: when the remote device is about to close the connection. | |
| 209 void ClearConfiguration( | |
| 210 dbus::MethodCall* method_call, | |
| 211 dbus::ExportedObject::ResponseSender response_sender) { | |
| 212 VLOG(1) << "ClearConfiguration"; | |
| 213 | |
| 214 DCHECK(OnOriginThread()); | |
| 215 DCHECK(delegate_); | |
| 216 | |
| 217 dbus::MessageReader reader(method_call); | |
| 218 dbus::ObjectPath transport_path; | |
| 219 if (!reader.PopObjectPath(&transport_path)) { | |
| 220 LOG(ERROR) << "ClearConfiguration called with incorrect parameters: " | |
| 221 << method_call->ToString(); | |
| 222 return; | |
| 223 } | |
| 224 | |
| 225 delegate_->ClearConfiguration(transport_path); | |
| 226 | |
| 227 response_sender.Run(dbus::Response::FromMethodCall(method_call)); | |
| 228 } | |
| 229 | |
| 230 // Called by Bluetooth daemon to do the clean up after unregistering the Media | |
| 231 // Endpoint. | |
| 232 void Release(dbus::MethodCall* method_call, | |
| 233 dbus::ExportedObject::ResponseSender response_sender) { | |
| 234 VLOG(1) << "Release"; | |
| 235 | |
| 236 DCHECK(OnOriginThread()); | |
| 237 DCHECK(delegate_); | |
| 238 | |
| 239 delegate_->Released(); | |
| 240 | |
| 241 response_sender.Run(dbus::Response::FromMethodCall(method_call)); | |
| 242 } | |
| 243 | |
| 244 // Called by Delegate to response to a method requiring transport | |
| 245 // configuration. | |
| 246 void OnConfiguration(dbus::MethodCall* method_call, | |
| 247 dbus::ExportedObject::ResponseSender response_sender, | |
| 248 const std::vector<uint8_t>& configuration) { | |
| 249 VLOG(1) << "OnConfiguration"; | |
| 250 | |
| 251 DCHECK(OnOriginThread()); | |
| 252 | |
| 253 // Generates the response to the method call. | |
| 254 scoped_ptr<dbus::Response> response( | |
| 255 dbus::Response::FromMethodCall(method_call)); | |
| 256 dbus::MessageWriter writer(response.get()); | |
| 257 if (configuration.empty()) { | |
| 258 LOG(ERROR) << "OnConfiguration called with empty configuration."; | |
| 259 writer.AppendArrayOfBytes(nullptr, 0); | |
| 260 } else { | |
| 261 writer.AppendArrayOfBytes(&configuration[0], configuration.size()); | |
| 262 } | |
| 263 response_sender.Run(response.Pass()); | |
| 264 } | |
| 265 | |
| 266 // Origin thread (i.e. the UI thread in production). | |
| 267 base::PlatformThreadId origin_thread_id_; | |
| 268 | |
| 269 // D-Bus Bus object is exported on. | |
| 270 dbus::Bus* bus_; | |
| 271 | |
| 272 // All incoming method calls are passed on to |delegate_|. |callback| passed | |
| 273 // to |delegate+| will generate the response for those methods whose returns | |
| 274 // are non-void. | |
| 275 Delegate* delegate_; | |
| 276 | |
| 277 // D-Bus object path of the object we are exporting, kept so we can unregister | |
| 278 // again in you destructor. | |
| 279 dbus::ObjectPath object_path_; | |
| 280 | |
| 281 // D-Bus object we are exporting, owned by this object. | |
| 282 scoped_refptr<dbus::ExportedObject> exported_object_; | |
| 283 | |
| 284 // Weak pointer factory for generating 'this' printers that might live longer | |
| 285 // than we do. | |
| 286 // Note This should remain the last member so it'll be destroyed and | |
| 287 // invalidate it's weak pointers before any other members are destroyed. | |
| 288 base::WeakPtrFactory<BluetoothMediaEndpointServiceProviderImpl> | |
| 289 weak_ptr_factory_; | |
| 290 | |
| 291 DISALLOW_COPY_AND_ASSIGN(BluetoothMediaEndpointServiceProviderImpl); | |
| 292 }; | |
| 293 | |
| 294 BluetoothMediaEndpointServiceProvider::Delegate::TransportProperties:: | |
| 295 TransportProperties() | |
| 296 : codec(kInvalidCodec), | |
| 297 state(kInvalidState) { | |
| 298 } | |
| 299 | |
| 300 BluetoothMediaEndpointServiceProvider::Delegate::TransportProperties:: | |
| 301 ~TransportProperties() { | |
| 302 } | |
| 303 | |
| 304 BluetoothMediaEndpointServiceProvider::BluetoothMediaEndpointServiceProvider() { | |
| 305 } | |
| 306 | |
| 307 BluetoothMediaEndpointServiceProvider:: | |
| 308 ~BluetoothMediaEndpointServiceProvider() { | |
| 309 } | |
| 310 | |
| 311 BluetoothMediaEndpointServiceProvider* | |
| 312 BluetoothMediaEndpointServiceProvider::Create( | |
| 313 dbus::Bus* bus, | |
| 314 const dbus::ObjectPath& object_path, | |
| 315 Delegate* delegate) { | |
| 316 // Returns a real implementation. | |
| 317 if (!DBusThreadManager::Get()->IsUsingStub(DBusClientBundle::BLUETOOTH)) { | |
| 318 return new BluetoothMediaEndpointServiceProviderImpl( | |
| 319 bus, object_path, delegate); | |
| 320 } | |
| 321 // Returns a fake implementation. | |
| 322 return new FakeBluetoothMediaEndpointServiceProvider(object_path, delegate); | |
| 323 } | |
| 324 | |
| 325 } // namespace chromeos | |
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Chromium Code Reviews
Issue 1347193004:
Refactor DBusThreadManager to split away BT clients. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master