зеркало из https://github.com/mozilla/gecko-dev.git
478 строки
12 KiB
C++
478 строки
12 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "base/basictypes.h"
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#include "BluetoothA2dpManager.h"
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#include "BluetoothCommon.h"
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#include "BluetoothService.h"
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#include "BluetoothSocket.h"
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#include "BluetoothUtils.h"
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#include "mozilla/dom/bluetooth/BluetoothTypes.h"
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#include "mozilla/Services.h"
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#include "mozilla/StaticPtr.h"
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#include "nsIObserverService.h"
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#include "MainThreadUtils.h"
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using namespace mozilla;
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USING_BLUETOOTH_NAMESPACE
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namespace {
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StaticRefPtr<BluetoothA2dpManager> sBluetoothA2dpManager;
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bool sInShutdown = false;
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} // anonymous namespace
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NS_IMETHODIMP
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BluetoothA2dpManager::Observe(nsISupports* aSubject,
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const char* aTopic,
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const char16_t* aData)
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{
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MOZ_ASSERT(sBluetoothA2dpManager);
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if (!strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
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HandleShutdown();
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return NS_OK;
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}
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MOZ_ASSERT(false, "BluetoothA2dpManager got unexpected topic!");
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return NS_ERROR_UNEXPECTED;
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}
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BluetoothA2dpManager::BluetoothA2dpManager()
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{
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Reset();
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}
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void
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BluetoothA2dpManager::Reset()
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{
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ResetA2dp();
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ResetAvrcp();
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}
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bool
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BluetoothA2dpManager::Init()
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{
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MOZ_ASSERT(NS_IsMainThread());
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nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
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NS_ENSURE_TRUE(obs, false);
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if (NS_FAILED(obs->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false))) {
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BT_WARNING("Failed to add shutdown observer!");
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return false;
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}
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return true;
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}
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BluetoothA2dpManager::~BluetoothA2dpManager()
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{
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nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
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NS_ENSURE_TRUE_VOID(obs);
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if (NS_FAILED(obs->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID))) {
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BT_WARNING("Failed to remove shutdown observer!");
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}
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}
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void
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BluetoothA2dpManager::ResetA2dp()
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{
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mA2dpConnected = false;
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mSinkState = SinkState::SINK_DISCONNECTED;
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mController = nullptr;
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}
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void
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BluetoothA2dpManager::ResetAvrcp()
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{
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mAvrcpConnected = false;
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mDuration = 0;
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mMediaNumber = 0;
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mTotalMediaCount = 0;
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mPosition = 0;
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mPlayStatus = ControlPlayStatus::PLAYSTATUS_UNKNOWN;
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}
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static BluetoothA2dpManager::SinkState
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StatusStringToSinkState(const nsAString& aStatus)
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{
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BluetoothA2dpManager::SinkState state =
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BluetoothA2dpManager::SinkState::SINK_UNKNOWN;
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if (aStatus.EqualsLiteral("disconnected")) {
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state = BluetoothA2dpManager::SinkState::SINK_DISCONNECTED;
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} else if (aStatus.EqualsLiteral("connecting")) {
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state = BluetoothA2dpManager::SinkState::SINK_CONNECTING;
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} else if (aStatus.EqualsLiteral("connected")) {
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state = BluetoothA2dpManager::SinkState::SINK_CONNECTED;
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} else if (aStatus.EqualsLiteral("playing")) {
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state = BluetoothA2dpManager::SinkState::SINK_PLAYING;
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} else {
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BT_WARNING("Unknown sink state");
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}
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return state;
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}
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//static
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BluetoothA2dpManager*
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BluetoothA2dpManager::Get()
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{
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MOZ_ASSERT(NS_IsMainThread());
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// If sBluetoothA2dpManager already exists, exit early
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if (sBluetoothA2dpManager) {
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return sBluetoothA2dpManager;
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}
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// If we're in shutdown, don't create a new instance
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NS_ENSURE_FALSE(sInShutdown, nullptr);
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// Create a new instance, register, and return
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BluetoothA2dpManager* manager = new BluetoothA2dpManager();
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NS_ENSURE_TRUE(manager->Init(), nullptr);
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sBluetoothA2dpManager = manager;
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return sBluetoothA2dpManager;
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}
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void
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BluetoothA2dpManager::HandleShutdown()
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{
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MOZ_ASSERT(NS_IsMainThread());
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sInShutdown = true;
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Disconnect(nullptr);
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sBluetoothA2dpManager = nullptr;
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}
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void
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BluetoothA2dpManager::Connect(const nsAString& aDeviceAddress,
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BluetoothProfileController* aController)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(!aDeviceAddress.IsEmpty());
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MOZ_ASSERT(aController && !mController);
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BluetoothService* bs = BluetoothService::Get();
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if (!bs || sInShutdown) {
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aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
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return;
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}
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if (mA2dpConnected) {
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aController->NotifyCompletion(NS_LITERAL_STRING(ERR_ALREADY_CONNECTED));
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return;
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}
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mDeviceAddress = aDeviceAddress;
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mController = aController;
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if (NS_FAILED(bs->SendSinkMessage(aDeviceAddress,
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NS_LITERAL_STRING("Connect")))) {
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aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
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return;
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}
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}
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void
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BluetoothA2dpManager::Disconnect(BluetoothProfileController* aController)
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{
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BluetoothService* bs = BluetoothService::Get();
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if (!bs) {
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if (aController) {
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aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
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}
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return;
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}
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if (!mA2dpConnected) {
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if (aController) {
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aController->NotifyCompletion(NS_LITERAL_STRING(ERR_ALREADY_DISCONNECTED));
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}
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return;
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}
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MOZ_ASSERT(!mDeviceAddress.IsEmpty());
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MOZ_ASSERT(!mController);
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mController = aController;
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if (NS_FAILED(bs->SendSinkMessage(mDeviceAddress,
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NS_LITERAL_STRING("Disconnect")))) {
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aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
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return;
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}
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}
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void
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BluetoothA2dpManager::OnConnect(const nsAString& aErrorStr)
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{
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MOZ_ASSERT(NS_IsMainThread());
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/**
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* On the one hand, notify the controller that we've done for outbound
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* connections. On the other hand, we do nothing for inbound connections.
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*/
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NS_ENSURE_TRUE_VOID(mController);
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nsRefPtr<BluetoothProfileController> controller = mController.forget();
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controller->NotifyCompletion(aErrorStr);
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}
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void
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BluetoothA2dpManager::OnDisconnect(const nsAString& aErrorStr)
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{
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MOZ_ASSERT(NS_IsMainThread());
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/**
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* On the one hand, notify the controller that we've done for outbound
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* connections. On the other hand, we do nothing for inbound connections.
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*/
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NS_ENSURE_TRUE_VOID(mController);
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nsRefPtr<BluetoothProfileController> controller = mController.forget();
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controller->NotifyCompletion(aErrorStr);
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Reset();
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}
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/* HandleSinkPropertyChanged update sink state in A2dp
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*
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* Possible values: "disconnected", "connecting", "connected", "playing"
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*
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* 1. "disconnected" -> "connecting"
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* Either an incoming or outgoing connection attempt ongoing
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* 2. "connecting" -> "disconnected"
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* Connection attempt failed
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* 3. "connecting" -> "connected"
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* Successfully connected
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* 4. "connected" -> "playing"
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* Audio stream active
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* 5. "playing" -> "connected"
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* Audio stream suspended
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* 6. "connected" -> "disconnected"
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* "playing" -> "disconnected"
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* Disconnected from local or the remote device
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*/
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void
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BluetoothA2dpManager::HandleSinkPropertyChanged(const BluetoothSignal& aSignal)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(aSignal.value().type() == BluetoothValue::TArrayOfBluetoothNamedValue);
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const nsString& address = aSignal.path();
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/**
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* Update sink property only if
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* - mDeviceAddress is empty (A2dp is disconnected), or
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* - this property change is from the connected sink.
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*/
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NS_ENSURE_TRUE_VOID(mDeviceAddress.IsEmpty() ||
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mDeviceAddress.Equals(address));
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const InfallibleTArray<BluetoothNamedValue>& arr =
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aSignal.value().get_ArrayOfBluetoothNamedValue();
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MOZ_ASSERT(arr.Length() == 1);
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/**
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* There are three properties:
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* - "State": a string
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* - "Connected": a boolean value
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* - "Playing": a boolean value
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*
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* Note that only "State" is handled in this function.
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*/
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const nsString& name = arr[0].name();
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NS_ENSURE_TRUE_VOID(name.EqualsLiteral("State"));
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const BluetoothValue& value = arr[0].value();
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MOZ_ASSERT(value.type() == BluetoothValue::TnsString);
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SinkState newState = StatusStringToSinkState(value.get_nsString());
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NS_ENSURE_TRUE_VOID((newState != SinkState::SINK_UNKNOWN) &&
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(newState != mSinkState));
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/**
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* Reject 'connected' state change if bluetooth is already disabled.
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* Sink state would be reset to 'disconnected' when bluetooth is disabled.
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*
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* See bug 984284 for more information about the edge case.
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*/
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NS_ENSURE_FALSE_VOID(newState == SinkState::SINK_CONNECTED &&
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mSinkState == SinkState::SINK_DISCONNECTED);
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SinkState prevState = mSinkState;
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mSinkState = newState;
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switch(mSinkState) {
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case SinkState::SINK_CONNECTING:
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// case 1: Either an incoming or outgoing connection attempt ongoing
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MOZ_ASSERT(prevState == SinkState::SINK_DISCONNECTED);
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break;
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case SinkState::SINK_PLAYING:
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// case 4: Audio stream active
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MOZ_ASSERT(prevState == SinkState::SINK_CONNECTED);
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break;
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case SinkState::SINK_CONNECTED:
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// case 5: Audio stream suspended
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if (prevState == SinkState::SINK_PLAYING) {
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break;
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}
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// case 3: Successfully connected
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MOZ_ASSERT(prevState == SinkState::SINK_CONNECTING);
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mA2dpConnected = true;
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mDeviceAddress = address;
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NotifyConnectionStatusChanged();
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OnConnect(EmptyString());
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break;
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case SinkState::SINK_DISCONNECTED:
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// case 2: Connection attempt failed
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if (prevState == SinkState::SINK_CONNECTING) {
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OnConnect(NS_LITERAL_STRING(ERR_CONNECTION_FAILED));
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break;
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}
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// case 6: Disconnected from the remote device
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MOZ_ASSERT(prevState == SinkState::SINK_CONNECTED ||
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prevState == SinkState::SINK_PLAYING);
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mA2dpConnected = false;
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NotifyConnectionStatusChanged();
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mDeviceAddress.Truncate();
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OnDisconnect(EmptyString());
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break;
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default:
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break;
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}
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}
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void
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BluetoothA2dpManager::NotifyConnectionStatusChanged()
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{
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MOZ_ASSERT(NS_IsMainThread());
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// Notify Gecko observers
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nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
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NS_ENSURE_TRUE_VOID(obs);
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if (NS_FAILED(obs->NotifyObservers(this,
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BLUETOOTH_A2DP_STATUS_CHANGED_ID,
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mDeviceAddress.get()))) {
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BT_WARNING("Failed to notify bluetooth-a2dp-status-changed observsers!");
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}
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// Dispatch an event of status change
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DispatchStatusChangedEvent(
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NS_LITERAL_STRING(A2DP_STATUS_CHANGED_ID), mDeviceAddress, mA2dpConnected);
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}
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void
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BluetoothA2dpManager::OnGetServiceChannel(const nsAString& aDeviceAddress,
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const nsAString& aServiceUuid,
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int aChannel)
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{
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}
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void
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BluetoothA2dpManager::OnUpdateSdpRecords(const nsAString& aDeviceAddress)
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{
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}
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void
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BluetoothA2dpManager::GetAddress(nsAString& aDeviceAddress)
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{
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aDeviceAddress = mDeviceAddress;
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}
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bool
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BluetoothA2dpManager::IsConnected()
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{
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return mA2dpConnected;
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}
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void
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BluetoothA2dpManager::SetAvrcpConnected(bool aConnected)
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{
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mAvrcpConnected = aConnected;
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if (!aConnected) {
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ResetAvrcp();
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}
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}
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bool
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BluetoothA2dpManager::IsAvrcpConnected()
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{
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return mAvrcpConnected;
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}
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void
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BluetoothA2dpManager::UpdateMetaData(const nsAString& aTitle,
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const nsAString& aArtist,
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const nsAString& aAlbum,
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uint64_t aMediaNumber,
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uint64_t aTotalMediaCount,
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uint32_t aDuration)
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{
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mTitle.Assign(aTitle);
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mArtist.Assign(aArtist);
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mAlbum.Assign(aAlbum);
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mMediaNumber = aMediaNumber;
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mTotalMediaCount = aTotalMediaCount;
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mDuration = aDuration;
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}
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void
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BluetoothA2dpManager::UpdatePlayStatus(uint32_t aDuration,
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uint32_t aPosition,
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ControlPlayStatus aPlayStatus)
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{
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mDuration = aDuration;
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mPosition = aPosition;
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mPlayStatus = aPlayStatus;
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}
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void
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BluetoothA2dpManager::GetAlbum(nsAString& aAlbum)
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{
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aAlbum.Assign(mAlbum);
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}
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uint32_t
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BluetoothA2dpManager::GetDuration()
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{
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return mDuration;
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}
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ControlPlayStatus
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BluetoothA2dpManager::GetPlayStatus()
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{
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return mPlayStatus;
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}
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uint32_t
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BluetoothA2dpManager::GetPosition()
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{
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return mPosition;
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}
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uint64_t
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BluetoothA2dpManager::GetMediaNumber()
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{
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return mMediaNumber;
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}
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void
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BluetoothA2dpManager::GetTitle(nsAString& aTitle)
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{
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aTitle.Assign(mTitle);
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}
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NS_IMPL_ISUPPORTS(BluetoothA2dpManager, nsIObserver)
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