device/bluetooth:Implement Register() for BluetoothAudioSinkChromeOS.

device/bluetooth/bluetooth_adapter_chromeos.cc

 // Copyright 2013 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/bluetooth_adapter_chromeos.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
 #include "base/sys_info.h"
 #include "base/thread_task_runner_handle.h"
 #include "chromeos/dbus/bluetooth_adapter_client.h"
 #include "chromeos/dbus/bluetooth_agent_manager_client.h"
 #include "chromeos/dbus/bluetooth_agent_service_provider.h"
 #include "chromeos/dbus/bluetooth_device_client.h"
 #include "chromeos/dbus/bluetooth_input_client.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "device/bluetooth/bluetooth_adapter_profile_chromeos.h"
+#include "device/bluetooth/bluetooth_audio_sink_chromeos.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_device_chromeos.h"
 #include "device/bluetooth/bluetooth_pairing_chromeos.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic_chromeos.h"
 #include "device/bluetooth/bluetooth_remote_gatt_descriptor_chromeos.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service_chromeos.h"
 #include "device/bluetooth/bluetooth_socket_chromeos.h"
 #include "device/bluetooth/bluetooth_socket_thread.h"
 #include "device/bluetooth/bluetooth_uuid.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 using device::BluetoothAdapter;
+using device::BluetoothAudioSink;
 using device::BluetoothDevice;
 using device::BluetoothSocket;
 using device::BluetoothUUID;
 
 namespace {
 
 // The agent path is relatively meaningless since BlueZ only permits one to
 // exist per D-Bus connection, it just has to be unique within Chromium.
 const char kAgentPath[] = "/org/chromium/bluetooth_agent";
 
@@ skipping 250 matching lines @@
           ui_task_runner_, socket_thread_);
   socket->Listen(this,
                  BluetoothSocketChromeOS::kL2cap,
                  uuid,
                  options,
                  base::Bind(callback, socket),
                  error_callback);
 }
 
 void BluetoothAdapterChromeOS::RegisterAudioSink(
-    const device::BluetoothAudioSink::Options& options,
+    const BluetoothAudioSink::Options& options,
     const device::BluetoothAdapter::AcquiredCallback& callback,
-    const device::BluetoothAudioSink::ErrorCallback& error_callback) {
-  // TODO(mcchou): Create and register a BluetoothAudioSink. Add the
-  // newly-created audio sink as an observer of the adapter.
-  // Add OnRegisterAudioSink(AcquiredCallback& , BluetoothAudioSink*) and pass
-  // it as an argument to BluetoothAudioSinkChromeOS::Register.
-  error_callback.Run(device::BluetoothAudioSink::ERROR_UNSUPPORTED_PLATFORM);
+    const BluetoothAudioSink::ErrorCallback& error_callback) {
+  VLOG(1) << "Registering audio sink";
+  if (!this->IsPresent()) {
+    error_callback.Run(BluetoothAudioSink::ERROR_INVALID_ADAPTER);
+    return;
+  }
+  scoped_refptr<BluetoothAudioSinkChromeOS> audio_sink(
+      new BluetoothAudioSinkChromeOS(this));
+  audio_sink->Register(
+      options,
+      base::Bind(&BluetoothAdapterChromeOS::OnRegisterAudioSink,
+                 weak_ptr_factory_.GetWeakPtr(), callback, audio_sink),
+      error_callback);
 }
 
 void BluetoothAdapterChromeOS::RemovePairingDelegateInternal(
     BluetoothDevice::PairingDelegate* pairing_delegate) {
   DCHECK(IsPresent());
   // Before removing a pairing delegate make sure that there aren't any devices
   // currently using it; if there are, clear the pairing context which will
   // make any responses no-ops.
   for (DevicesMap::iterator iter = devices_.begin();
        iter != devices_.end(); ++iter) {
@@ skipping 321 matching lines @@
 }
 
 void BluetoothAdapterChromeOS::OnRequestDefaultAgentError(
     const std::string& error_name,
     const std::string& error_message) {
   DCHECK(IsPresent());
   LOG(WARNING) << ": Failed to make pairing agent default: "
                << error_name << ": " << error_message;
 }
 
+void BluetoothAdapterChromeOS::OnRegisterAudioSink(
+    const device::BluetoothAdapter::AcquiredCallback& callback,
+    scoped_refptr<BluetoothAudioSink> audio_sink) {
+  DCHECK(audio_sink.get());
+  callback.Run(audio_sink);
+}
+
 BluetoothDeviceChromeOS*
 BluetoothAdapterChromeOS::GetDeviceWithPath(
     const dbus::ObjectPath& object_path) {
   if (!IsPresent())
     return NULL;
 
   for (DevicesMap::iterator iter = devices_.begin(); iter != devices_.end();
        ++iter) {
     BluetoothDeviceChromeOS* device_chromeos =
         static_cast<BluetoothDeviceChromeOS*>(iter->second);
@@ skipping 383 matching lines @@
   // The adapter is already discovering.
   if (num_discovery_sessions_ > 0) {
     DCHECK(IsDiscovering());
     DCHECK(!discovery_request_pending_);
     num_discovery_sessions_++;
     callback.Run();
     return;
   }
 
   // There are no active discovery sessions.
-  DCHECK(num_discovery_sessions_ == 0);
+  DCHECK_EQ(num_discovery_sessions_, 0);
 
   // This is the first request to start device discovery.
   discovery_request_pending_ = true;
   DBusThreadManager::Get()->GetBluetoothAdapterClient()->
       StartDiscovery(
           object_path_,
           base::Bind(&BluetoothAdapterChromeOS::OnStartDiscovery,
                      weak_ptr_factory_.GetWeakPtr(),
                      callback),
           base::Bind(&BluetoothAdapterChromeOS::OnStartDiscoveryError,
@@ skipping 29 matching lines @@
     // TODO(armansito): This should never happen once we have the
     // DiscoverySession API. Replace this case with an assert once it's
     // the deprecated methods have been removed. (See crbug.com/3445008).
     VLOG(1) << "No active discovery sessions. Returning error.";
     error_callback.Run();
     return;
   }
 
   // There is exactly one active discovery session. Request BlueZ to stop
   // discovery.
-  DCHECK(num_discovery_sessions_ == 1);
+  DCHECK_EQ(num_discovery_sessions_, 1);
   discovery_request_pending_ = true;
   DBusThreadManager::Get()->GetBluetoothAdapterClient()->
       StopDiscovery(
           object_path_,
           base::Bind(&BluetoothAdapterChromeOS::OnStopDiscovery,
                      weak_ptr_factory_.GetWeakPtr(),
                      callback),
           base::Bind(&BluetoothAdapterChromeOS::OnStopDiscoveryError,
                      weak_ptr_factory_.GetWeakPtr(),
                      error_callback));
 }
 
 void BluetoothAdapterChromeOS::OnStartDiscovery(const base::Closure& callback) {
   DCHECK(IsPresent());
   // Report success on the original request and increment the count.
   VLOG(1) << __func__;
   DCHECK(discovery_request_pending_);
-  DCHECK(num_discovery_sessions_ == 0);
+  DCHECK_EQ(num_discovery_sessions_, 0);
   discovery_request_pending_ = false;
   num_discovery_sessions_++;
   callback.Run();
 
   // Try to add a new discovery session for each queued request.
   ProcessQueuedDiscoveryRequests();
 }
 
 void BluetoothAdapterChromeOS::OnStartDiscoveryError(
     const base::Closure& callback,
     const ErrorCallback& error_callback,
     const std::string& error_name,
     const std::string& error_message) {
   DCHECK(IsPresent());
   LOG(WARNING) << object_path_.value() << ": Failed to start discovery: "
                << error_name << ": " << error_message;
 
   // Failed to start discovery. This can only happen if the count is at 0.
-  DCHECK(num_discovery_sessions_ == 0);
+  DCHECK_EQ(num_discovery_sessions_, 0);
   DCHECK(discovery_request_pending_);
   discovery_request_pending_ = false;
 
   // Discovery request may fail if discovery was previously initiated by Chrome,
   // but the session were invalidated due to the discovery state unexpectedly
   // changing to false and then back to true. In this case, report success.
   if (error_name == bluetooth_device::kErrorInProgress && IsDiscovering()) {
     VLOG(1) << "Discovery previously initiated. Reporting success.";
     num_discovery_sessions_++;
     callback.Run();
   } else {
     error_callback.Run();
   }
 
   // Try to add a new discovery session for each queued request.
   ProcessQueuedDiscoveryRequests();
 }
 
 void BluetoothAdapterChromeOS::OnStopDiscovery(const base::Closure& callback) {
   DCHECK(IsPresent());
   // Report success on the original request and decrement the count.
   VLOG(1) << __func__;
   DCHECK(discovery_request_pending_);
-  DCHECK(num_discovery_sessions_ == 1);
+  DCHECK_EQ(num_discovery_sessions_, 1);
   discovery_request_pending_ = false;
   num_discovery_sessions_--;
   callback.Run();
 
   // Try to add a new discovery session for each queued request.
   ProcessQueuedDiscoveryRequests();
 }
 
 void BluetoothAdapterChromeOS::OnStopDiscoveryError(
     const ErrorCallback& error_callback,
     const std::string& error_name,
     const std::string& error_message) {
   DCHECK(IsPresent());
   LOG(WARNING) << object_path_.value() << ": Failed to stop discovery: "
                << error_name << ": " << error_message;
 
   // Failed to stop discovery. This can only happen if the count is at 1.
   DCHECK(discovery_request_pending_);
-  DCHECK(num_discovery_sessions_ == 1);
+  DCHECK_EQ(num_discovery_sessions_, 1);
   discovery_request_pending_ = false;
   error_callback.Run();
 
   // Try to add a new discovery session for each queued request.
   ProcessQueuedDiscoveryRequests();
 }
 
 void BluetoothAdapterChromeOS::ProcessQueuedDiscoveryRequests() {
   while (!discovery_request_queue_.empty()) {
     VLOG(1) << "Process queued discovery request.";
     DiscoveryCallbackPair callbacks = discovery_request_queue_.front();
     discovery_request_queue_.pop();
     AddDiscoverySession(callbacks.first, callbacks.second);
 
     // If the queued request resulted in a pending call, then let it
     // asynchonously process the remaining queued requests once the pending
     // call returns.
     if (discovery_request_pending_)
       return;
   }
 }
 
 }  // namespace chromeos