1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/system/gonk/AudioChannelManager.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,156 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#include "nsIDOMClassInfo.h"
1.9 +#include "nsIDOMEvent.h"
1.10 +#include "nsIDOMEventListener.h"
1.11 +#include "nsPIDOMWindow.h"
1.12 +#include "nsIDocShell.h"
1.13 +#include "nsIPermissionManager.h"
1.14 +#include "nsIInterfaceRequestorUtils.h"
1.15 +#include "AudioChannelManager.h"
1.16 +#include "mozilla/dom/AudioChannelManagerBinding.h"
1.17 +
1.18 +using namespace mozilla::hal;
1.19 +
1.20 +namespace mozilla {
1.21 +namespace dom {
1.22 +namespace system {
1.23 +
1.24 +NS_IMPL_QUERY_INTERFACE_INHERITED(AudioChannelManager, DOMEventTargetHelper,
1.25 + nsIDOMEventListener)
1.26 +NS_IMPL_ADDREF_INHERITED(AudioChannelManager, DOMEventTargetHelper)
1.27 +NS_IMPL_RELEASE_INHERITED(AudioChannelManager, DOMEventTargetHelper)
1.28 +
1.29 +AudioChannelManager::AudioChannelManager()
1.30 + : mState(SWITCH_STATE_UNKNOWN)
1.31 + , mVolumeChannel(-1)
1.32 +{
1.33 + RegisterSwitchObserver(SWITCH_HEADPHONES, this);
1.34 + mState = GetCurrentSwitchState(SWITCH_HEADPHONES);
1.35 + SetIsDOMBinding();
1.36 +}
1.37 +
1.38 +AudioChannelManager::~AudioChannelManager()
1.39 +{
1.40 + UnregisterSwitchObserver(SWITCH_HEADPHONES, this);
1.41 +
1.42 + nsCOMPtr<EventTarget> target = do_QueryInterface(GetOwner());
1.43 + NS_ENSURE_TRUE_VOID(target);
1.44 +
1.45 + target->RemoveSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
1.46 + this,
1.47 + /* useCapture = */ true);
1.48 +}
1.49 +
1.50 +void
1.51 +AudioChannelManager::Init(nsPIDOMWindow* aWindow)
1.52 +{
1.53 + BindToOwner(aWindow->IsOuterWindow() ?
1.54 + aWindow->GetCurrentInnerWindow() : aWindow);
1.55 +
1.56 + nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(GetOwner());
1.57 + NS_ENSURE_TRUE_VOID(target);
1.58 +
1.59 + target->AddSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
1.60 + this,
1.61 + /* useCapture = */ true,
1.62 + /* wantsUntrusted = */ false);
1.63 +}
1.64 +
1.65 +JSObject*
1.66 +AudioChannelManager::WrapObject(JSContext* aCx)
1.67 +{
1.68 + return AudioChannelManagerBinding::Wrap(aCx, this);
1.69 +}
1.70 +
1.71 +void
1.72 +AudioChannelManager::Notify(const SwitchEvent& aEvent)
1.73 +{
1.74 + mState = aEvent.status();
1.75 +
1.76 + DispatchTrustedEvent(NS_LITERAL_STRING("headphoneschange"));
1.77 +}
1.78 +
1.79 +bool
1.80 +AudioChannelManager::SetVolumeControlChannel(const nsAString& aChannel)
1.81 +{
1.82 + if (aChannel.EqualsASCII("publicnotification")) {
1.83 + return false;
1.84 + }
1.85 +
1.86 + AudioChannel newChannel = AudioChannelService::GetAudioChannel(aChannel);
1.87 +
1.88 + // Only normal channel doesn't need permission.
1.89 + if (newChannel != AudioChannel::Normal) {
1.90 + nsCOMPtr<nsIPermissionManager> permissionManager =
1.91 + do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
1.92 + if (!permissionManager) {
1.93 + return false;
1.94 + }
1.95 + uint32_t perm = nsIPermissionManager::UNKNOWN_ACTION;
1.96 + permissionManager->TestPermissionFromWindow(GetOwner(),
1.97 + nsCString(NS_LITERAL_CSTRING("audio-channel-") +
1.98 + NS_ConvertUTF16toUTF8(aChannel)).get(), &perm);
1.99 + if (perm != nsIPermissionManager::ALLOW_ACTION) {
1.100 + return false;
1.101 + }
1.102 + }
1.103 +
1.104 + if (mVolumeChannel == (int32_t)newChannel) {
1.105 + return true;
1.106 + }
1.107 +
1.108 + mVolumeChannel = (int32_t)newChannel;
1.109 +
1.110 + NotifyVolumeControlChannelChanged();
1.111 + return true;
1.112 +}
1.113 +
1.114 +bool
1.115 +AudioChannelManager::GetVolumeControlChannel(nsAString & aChannel)
1.116 +{
1.117 + if (mVolumeChannel >= 0) {
1.118 + AudioChannelService::GetAudioChannelString(
1.119 + static_cast<AudioChannel>(mVolumeChannel),
1.120 + aChannel);
1.121 + } else {
1.122 + aChannel.AssignASCII("");
1.123 + }
1.124 +
1.125 + return true;
1.126 +}
1.127 +
1.128 +void
1.129 +AudioChannelManager::NotifyVolumeControlChannelChanged()
1.130 +{
1.131 + nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
1.132 + NS_ENSURE_TRUE_VOID(docshell);
1.133 +
1.134 + bool isActive = false;
1.135 + docshell->GetIsActive(&isActive);
1.136 +
1.137 + AudioChannelService* service = AudioChannelService::GetAudioChannelService();
1.138 + if (isActive) {
1.139 + service->SetDefaultVolumeControlChannel(mVolumeChannel, isActive);
1.140 + } else {
1.141 + service->SetDefaultVolumeControlChannel(-1, isActive);
1.142 + }
1.143 +}
1.144 +
1.145 +NS_IMETHODIMP
1.146 +AudioChannelManager::HandleEvent(nsIDOMEvent* aEvent)
1.147 +{
1.148 + nsAutoString type;
1.149 + aEvent->GetType(type);
1.150 +
1.151 + if (type.EqualsLiteral("visibilitychange")) {
1.152 + NotifyVolumeControlChannelChanged();
1.153 + }
1.154 + return NS_OK;
1.155 +}
1.156 +
1.157 +} // namespace system
1.158 +} // namespace dom
1.159 +} // namespace mozilla
