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gecko-dev/dom/audiochannel/AudioChannelService.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "AudioChannelService.h"
#include "base/basictypes.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/Unused.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/TabParent.h"
#include "nsContentUtils.h"
#include "nsIScriptSecurityManager.h"
#include "nsISupportsPrimitives.h"
#include "nsThreadUtils.h"
#include "nsHashPropertyBag.h"
#include "nsComponentManagerUtils.h"
#include "nsGlobalWindow.h"
#include "nsPIDOMWindow.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/dom/SettingChangeNotificationBinding.h"
#ifdef MOZ_WIDGET_GONK
#include "nsJSUtils.h"
#include "SpeakerManagerService.h"
#endif
#include "mozilla/Preferences.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::hal;
namespace {
// If true, any new AudioChannelAgent will be muted when created.
bool sAudioChannelMutedByDefault = false;
bool sAudioChannelCompeting = false;
bool sXPCOMShuttingDown = false;
class NotifyChannelActiveRunnable final : public Runnable
{
public:
NotifyChannelActiveRunnable(uint64_t aWindowID, AudioChannel aAudioChannel,
bool aActive)
: mWindowID(aWindowID)
, mAudioChannel(aAudioChannel)
, mActive(aActive)
{}
NS_IMETHOD Run() override
{
nsCOMPtr<nsIObserverService> observerService =
services::GetObserverService();
if (NS_WARN_IF(!observerService)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsISupportsPRUint64> wrapper =
do_CreateInstance(NS_SUPPORTS_PRUINT64_CONTRACTID);
if (NS_WARN_IF(!wrapper)) {
return NS_ERROR_FAILURE;
}
wrapper->SetData(mWindowID);
nsAutoString name;
AudioChannelService::GetAudioChannelString(mAudioChannel, name);
nsAutoCString topic;
topic.Assign("audiochannel-activity-");
topic.Append(NS_ConvertUTF16toUTF8(name));
observerService->NotifyObservers(wrapper, topic.get(),
mActive
? u"active"
: u"inactive");
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("NotifyChannelActiveRunnable, type = %d, active = %d\n",
mAudioChannel, mActive));
return NS_OK;
}
private:
const uint64_t mWindowID;
const AudioChannel mAudioChannel;
const bool mActive;
};
bool
IsParentProcess()
{
return XRE_GetProcessType() == GeckoProcessType_Default;
}
class AudioPlaybackRunnable final : public Runnable
{
public:
AudioPlaybackRunnable(nsPIDOMWindowOuter* aWindow, bool aActive,
AudioChannelService::AudibleChangedReasons aReason)
: mWindow(aWindow)
, mActive(aActive)
, mReason(aReason)
{}
NS_IMETHOD Run() override
{
nsCOMPtr<nsIObserverService> observerService =
services::GetObserverService();
if (NS_WARN_IF(!observerService)) {
return NS_ERROR_FAILURE;
}
nsAutoString state;
GetActiveState(state);
observerService->NotifyObservers(ToSupports(mWindow),
"audio-playback",
state.get());
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioPlaybackRunnable, active = %d, reason = %d\n",
mActive, mReason));
return NS_OK;
}
private:
void GetActiveState(nsAString& astate)
{
if (mActive) {
CopyASCIItoUTF16("active", astate);
} else {
if(mReason == AudioChannelService::AudibleChangedReasons::ePauseStateChanged) {
CopyASCIItoUTF16("inactive-pause", astate);
} else {
CopyASCIItoUTF16("inactive-nonaudible", astate);
}
}
}
nsCOMPtr<nsPIDOMWindowOuter> mWindow;
bool mActive;
AudioChannelService::AudibleChangedReasons mReason;
};
} // anonymous namespace
StaticRefPtr<AudioChannelService> gAudioChannelService;
// Mappings from 'mozaudiochannel' attribute strings to an enumeration.
static const nsAttrValue::EnumTable kMozAudioChannelAttributeTable[] = {
{ "normal", (int16_t)AudioChannel::Normal },
{ "content", (int16_t)AudioChannel::Content },
{ "notification", (int16_t)AudioChannel::Notification },
{ "alarm", (int16_t)AudioChannel::Alarm },
{ "telephony", (int16_t)AudioChannel::Telephony },
{ "ringer", (int16_t)AudioChannel::Ringer },
{ "publicnotification", (int16_t)AudioChannel::Publicnotification },
{ "system", (int16_t)AudioChannel::System },
{ nullptr }
};
/* static */ void
AudioChannelService::CreateServiceIfNeeded()
{
MOZ_ASSERT(NS_IsMainThread());
if (!gAudioChannelService) {
gAudioChannelService = new AudioChannelService();
}
}
/* static */ already_AddRefed<AudioChannelService>
AudioChannelService::GetOrCreate()
{
if (sXPCOMShuttingDown) {
return nullptr;
}
CreateServiceIfNeeded();
RefPtr<AudioChannelService> service = gAudioChannelService.get();
return service.forget();
}
/* static */ PRLogModuleInfo*
AudioChannelService::GetAudioChannelLog()
{
static PRLogModuleInfo *gAudioChannelLog;
if (!gAudioChannelLog) {
gAudioChannelLog = PR_NewLogModule("AudioChannel");
}
return gAudioChannelLog;
}
/* static */ void
AudioChannelService::Shutdown()
{
if (gAudioChannelService) {
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->RemoveObserver(gAudioChannelService, "xpcom-shutdown");
obs->RemoveObserver(gAudioChannelService, "outer-window-destroyed");
if (IsParentProcess()) {
obs->RemoveObserver(gAudioChannelService, "ipc:content-shutdown");
#ifdef MOZ_WIDGET_GONK
// To monitor the volume settings based on audio channel.
obs->RemoveObserver(gAudioChannelService, "mozsettings-changed");
#endif
}
}
gAudioChannelService->mWindows.Clear();
gAudioChannelService->mPlayingChildren.Clear();
gAudioChannelService->mTabParents.Clear();
#ifdef MOZ_WIDGET_GONK
gAudioChannelService->mSpeakerManager.Clear();
#endif
gAudioChannelService = nullptr;
}
}
/* static */ bool
AudioChannelService::IsEnableAudioCompeting()
{
CreateServiceIfNeeded();
return sAudioChannelCompeting;
}
NS_INTERFACE_MAP_BEGIN(AudioChannelService)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIAudioChannelService)
NS_INTERFACE_MAP_ENTRY(nsIAudioChannelService)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(AudioChannelService)
NS_IMPL_RELEASE(AudioChannelService)
AudioChannelService::AudioChannelService()
: mDefChannelChildID(CONTENT_PROCESS_ID_UNKNOWN)
, mTelephonyChannel(false)
, mContentOrNormalChannel(false)
, mAnyChannel(false)
{
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->AddObserver(this, "xpcom-shutdown", false);
obs->AddObserver(this, "outer-window-destroyed", false);
if (IsParentProcess()) {
obs->AddObserver(this, "ipc:content-shutdown", false);
#ifdef MOZ_WIDGET_GONK
// To monitor the volume settings based on audio channel.
obs->AddObserver(this, "mozsettings-changed", false);
#endif
}
}
Preferences::AddBoolVarCache(&sAudioChannelMutedByDefault,
"dom.audiochannel.mutedByDefault");
Preferences::AddBoolVarCache(&sAudioChannelCompeting,
"dom.audiochannel.audioCompeting");
}
AudioChannelService::~AudioChannelService()
{
}
void
AudioChannelService::RegisterAudioChannelAgent(AudioChannelAgent* aAgent,
AudibleState aAudible)
{
MOZ_ASSERT(aAgent);
uint64_t windowID = aAgent->WindowID();
AudioChannelWindow* winData = GetWindowData(windowID);
if (!winData) {
winData = new AudioChannelWindow(windowID);
mWindows.AppendElement(winData);
}
// To make sure agent would be alive because AppendAgent() would trigger the
// callback function of AudioChannelAgentOwner that means the agent might be
// released in their callback.
RefPtr<AudioChannelAgent> kungFuDeathGrip(aAgent);
winData->AppendAgent(aAgent, aAudible);
MaybeSendStatusUpdate();
}
void
AudioChannelService::UnregisterAudioChannelAgent(AudioChannelAgent* aAgent)
{
MOZ_ASSERT(aAgent);
AudioChannelWindow* winData = GetWindowData(aAgent->WindowID());
if (!winData) {
return;
}
// To make sure agent would be alive because AppendAgent() would trigger the
// callback function of AudioChannelAgentOwner that means the agent might be
// released in their callback.
RefPtr<AudioChannelAgent> kungFuDeathGrip(aAgent);
winData->RemoveAgent(aAgent);
#ifdef MOZ_WIDGET_GONK
bool active = AnyAudioChannelIsActive();
for (uint32_t i = 0; i < mSpeakerManager.Length(); i++) {
mSpeakerManager[i]->SetAudioChannelActive(active);
}
#endif
MaybeSendStatusUpdate();
}
void
AudioChannelService::RegisterTabParent(TabParent* aTabParent)
{
MOZ_ASSERT(aTabParent);
MOZ_ASSERT(!mTabParents.Contains(aTabParent));
mTabParents.AppendElement(aTabParent);
}
void
AudioChannelService::UnregisterTabParent(TabParent* aTabParent)
{
MOZ_ASSERT(aTabParent);
mTabParents.RemoveElement(aTabParent);
}
AudioPlaybackConfig
AudioChannelService::GetMediaConfig(nsPIDOMWindowOuter* aWindow,
uint32_t aAudioChannel) const
{
MOZ_ASSERT(!aWindow || aWindow->IsOuterWindow());
MOZ_ASSERT(aAudioChannel < NUMBER_OF_AUDIO_CHANNELS);
AudioPlaybackConfig config(1.0, false,
nsISuspendedTypes::NONE_SUSPENDED);
if (!aWindow || !aWindow->IsOuterWindow()) {
config.SetConfig(0.0, true,
nsISuspendedTypes::SUSPENDED_BLOCK);
return config;
}
AudioChannelWindow* winData = nullptr;
nsCOMPtr<nsPIDOMWindowOuter> window = aWindow;
// The volume must be calculated based on the window hierarchy. Here we go up
// to the top window and we calculate the volume and the muted flag.
do {
winData = GetWindowData(window->WindowID());
if (winData) {
config.mVolume *= winData->mChannels[aAudioChannel].mVolume;
config.mMuted = config.mMuted || winData->mChannels[aAudioChannel].mMuted;
config.mSuspend = winData->mOwningAudioFocus ?
config.mSuspend : nsISuspendedTypes::SUSPENDED_STOP_DISPOSABLE;
}
config.mVolume *= window->GetAudioVolume();
config.mMuted = config.mMuted || window->GetAudioMuted();
if (window->GetMediaSuspend() != nsISuspendedTypes::NONE_SUSPENDED) {
config.mSuspend = window->GetMediaSuspend();
}
nsCOMPtr<nsPIDOMWindowOuter> win = window->GetScriptableParentOrNull();
if (!win) {
break;
}
window = do_QueryInterface(win);
// If there is no parent, or we are the toplevel we don't continue.
} while (window && window != aWindow);
return config;
}
void
AudioChannelService::AudioAudibleChanged(AudioChannelAgent* aAgent,
AudibleState aAudible,
AudibleChangedReasons aReason)
{
MOZ_ASSERT(aAgent);
uint64_t windowID = aAgent->WindowID();
AudioChannelWindow* winData = GetWindowData(windowID);
if (winData) {
winData->AudioAudibleChanged(aAgent, aAudible, aReason);
}
}
bool
AudioChannelService::TelephonyChannelIsActive()
{
nsTObserverArray<nsAutoPtr<AudioChannelWindow>>::ForwardIterator windowsIter(mWindows);
while (windowsIter.HasMore()) {
AudioChannelWindow* next = windowsIter.GetNext();
if (next->mChannels[(uint32_t)AudioChannel::Telephony].mNumberOfAgents != 0 &&
!next->mChannels[(uint32_t)AudioChannel::Telephony].mMuted) {
return true;
}
}
if (IsParentProcess()) {
nsTObserverArray<nsAutoPtr<AudioChannelChildStatus>>::ForwardIterator
childrenIter(mPlayingChildren);
while (childrenIter.HasMore()) {
AudioChannelChildStatus* child = childrenIter.GetNext();
if (child->mActiveTelephonyChannel) {
return true;
}
}
}
return false;
}
bool
AudioChannelService::ContentOrNormalChannelIsActive()
{
// This method is meant to be used just by the child to send status update.
MOZ_ASSERT(!IsParentProcess());
nsTObserverArray<nsAutoPtr<AudioChannelWindow>>::ForwardIterator iter(mWindows);
while (iter.HasMore()) {
AudioChannelWindow* next = iter.GetNext();
if (next->mChannels[(uint32_t)AudioChannel::Content].mNumberOfAgents > 0 ||
next->mChannels[(uint32_t)AudioChannel::Normal].mNumberOfAgents > 0) {
return true;
}
}
return false;
}
AudioChannelService::AudioChannelChildStatus*
AudioChannelService::GetChildStatus(uint64_t aChildID) const
{
nsTObserverArray<nsAutoPtr<AudioChannelChildStatus>>::ForwardIterator
iter(mPlayingChildren);
while (iter.HasMore()) {
AudioChannelChildStatus* child = iter.GetNext();
if (child->mChildID == aChildID) {
return child;
}
}
return nullptr;
}
void
AudioChannelService::RemoveChildStatus(uint64_t aChildID)
{
nsTObserverArray<nsAutoPtr<AudioChannelChildStatus>>::ForwardIterator
iter(mPlayingChildren);
while (iter.HasMore()) {
nsAutoPtr<AudioChannelChildStatus>& child = iter.GetNext();
if (child->mChildID == aChildID) {
mPlayingChildren.RemoveElement(child);
break;
}
}
}
bool
AudioChannelService::ProcessContentOrNormalChannelIsActive(uint64_t aChildID)
{
AudioChannelChildStatus* child = GetChildStatus(aChildID);
if (!child) {
return false;
}
return child->mActiveContentOrNormalChannel;
}
bool
AudioChannelService::AnyAudioChannelIsActive()
{
nsTObserverArray<nsAutoPtr<AudioChannelWindow>>::ForwardIterator iter(mWindows);
while (iter.HasMore()) {
AudioChannelWindow* next = iter.GetNext();
for (uint32_t i = 0; kMozAudioChannelAttributeTable[i].tag; ++i) {
if (next->mChannels[kMozAudioChannelAttributeTable[i].value].mNumberOfAgents
!= 0) {
return true;
}
}
}
if (IsParentProcess()) {
return !mPlayingChildren.IsEmpty();
}
return false;
}
NS_IMETHODIMP
AudioChannelService::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData)
{
if (!strcmp(aTopic, "xpcom-shutdown")) {
sXPCOMShuttingDown = true;
Shutdown();
} else if (!strcmp(aTopic, "outer-window-destroyed")) {
nsCOMPtr<nsISupportsPRUint64> wrapper = do_QueryInterface(aSubject);
NS_ENSURE_TRUE(wrapper, NS_ERROR_FAILURE);
uint64_t outerID;
nsresult rv = wrapper->GetData(&outerID);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsAutoPtr<AudioChannelWindow> winData;
{
nsTObserverArray<nsAutoPtr<AudioChannelWindow>>::ForwardIterator
iter(mWindows);
while (iter.HasMore()) {
nsAutoPtr<AudioChannelWindow>& next = iter.GetNext();
if (next->mWindowID == outerID) {
uint32_t pos = mWindows.IndexOf(next);
winData = next.forget();
mWindows.RemoveElementAt(pos);
break;
}
}
}
if (winData) {
nsTObserverArray<AudioChannelAgent*>::ForwardIterator
iter(winData->mAgents);
while (iter.HasMore()) {
iter.GetNext()->WindowVolumeChanged();
}
}
#ifdef MOZ_WIDGET_GONK
bool active = AnyAudioChannelIsActive();
for (uint32_t i = 0; i < mSpeakerManager.Length(); i++) {
mSpeakerManager[i]->SetAudioChannelActive(active);
}
#endif
} else if (!strcmp(aTopic, "ipc:content-shutdown")) {
nsCOMPtr<nsIPropertyBag2> props = do_QueryInterface(aSubject);
if (!props) {
NS_WARNING("ipc:content-shutdown message without property bag as subject");
return NS_OK;
}
uint64_t childID = 0;
nsresult rv = props->GetPropertyAsUint64(NS_LITERAL_STRING("childID"),
&childID);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (mDefChannelChildID == childID) {
SetDefaultVolumeControlChannelInternal(-1, false, childID);
mDefChannelChildID = CONTENT_PROCESS_ID_UNKNOWN;
}
RemoveChildStatus(childID);
}
return NS_OK;
}
void
AudioChannelService::RefreshAgentsVolumeAndPropagate(AudioChannel aAudioChannel,
nsPIDOMWindowOuter* aWindow)
{
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
nsCOMPtr<nsPIDOMWindowOuter> topWindow = aWindow->GetScriptableTop();
if (!topWindow) {
return;
}
AudioChannelWindow* winData = GetWindowData(topWindow->WindowID());
if (!winData) {
return;
}
for (uint32_t i = 0; i < mTabParents.Length(); ++i) {
mTabParents[i]->AudioChannelChangeNotification(aWindow, aAudioChannel,
winData->mChannels[(uint32_t)aAudioChannel].mVolume,
winData->mChannels[(uint32_t)aAudioChannel].mMuted);
}
RefreshAgentsVolume(aWindow);
}
void
AudioChannelService::RefreshAgents(nsPIDOMWindowOuter* aWindow,
mozilla::function<void(AudioChannelAgent*)> aFunc)
{
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
nsCOMPtr<nsPIDOMWindowOuter> topWindow = aWindow->GetScriptableTop();
if (!topWindow) {
return;
}
AudioChannelWindow* winData = GetWindowData(topWindow->WindowID());
if (!winData) {
return;
}
nsTObserverArray<AudioChannelAgent*>::ForwardIterator
iter(winData->mAgents);
while (iter.HasMore()) {
aFunc(iter.GetNext());
}
}
void
AudioChannelService::RefreshAgentsVolume(nsPIDOMWindowOuter* aWindow)
{
RefreshAgents(aWindow, [] (AudioChannelAgent* agent) {
agent->WindowVolumeChanged();
});
}
void
AudioChannelService::RefreshAgentsSuspend(nsPIDOMWindowOuter* aWindow,
nsSuspendedTypes aSuspend)
{
RefreshAgents(aWindow, [aSuspend] (AudioChannelAgent* agent) {
agent->WindowSuspendChanged(aSuspend);
});
}
void
AudioChannelService::SetWindowAudioCaptured(nsPIDOMWindowOuter* aWindow,
uint64_t aInnerWindowID,
bool aCapture)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
MOZ_LOG(GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelService, SetWindowAudioCaptured, window = %p, "
"aCapture = %d\n", aWindow, aCapture));
nsCOMPtr<nsPIDOMWindowOuter> topWindow = aWindow->GetScriptableTop();
if (!topWindow) {
return;
}
AudioChannelWindow* winData = GetWindowData(topWindow->WindowID());
// This can happen, but only during shutdown, because the the outer window
// changes ScriptableTop, so that its ID is different.
// In this case either we are capturing, and it's too late because the window
// has been closed anyways, or we are un-capturing, and everything has already
// been cleaned up by the HTMLMediaElements or the AudioContexts.
if (!winData) {
return;
}
if (aCapture != winData->mIsAudioCaptured) {
winData->mIsAudioCaptured = aCapture;
nsTObserverArray<AudioChannelAgent*>::ForwardIterator
iter(winData->mAgents);
while (iter.HasMore()) {
iter.GetNext()->WindowAudioCaptureChanged(aInnerWindowID, aCapture);
}
}
}
/* static */ const nsAttrValue::EnumTable*
AudioChannelService::GetAudioChannelTable()
{
return kMozAudioChannelAttributeTable;
}
/* static */ AudioChannel
AudioChannelService::GetAudioChannel(const nsAString& aChannel)
{
for (uint32_t i = 0; kMozAudioChannelAttributeTable[i].tag; ++i) {
if (aChannel.EqualsASCII(kMozAudioChannelAttributeTable[i].tag)) {
return static_cast<AudioChannel>(kMozAudioChannelAttributeTable[i].value);
}
}
return AudioChannel::Normal;
}
/* static */ AudioChannel
AudioChannelService::GetDefaultAudioChannel()
{
nsAutoString audioChannel(Preferences::GetString("media.defaultAudioChannel"));
if (audioChannel.IsEmpty()) {
return AudioChannel::Normal;
}
for (uint32_t i = 0; kMozAudioChannelAttributeTable[i].tag; ++i) {
if (audioChannel.EqualsASCII(kMozAudioChannelAttributeTable[i].tag)) {
return static_cast<AudioChannel>(kMozAudioChannelAttributeTable[i].value);
}
}
return AudioChannel::Normal;
}
/* static */ void
AudioChannelService::GetAudioChannelString(AudioChannel aChannel,
nsAString& aString)
{
aString.AssignASCII("normal");
for (uint32_t i = 0; kMozAudioChannelAttributeTable[i].tag; ++i) {
if (aChannel ==
static_cast<AudioChannel>(kMozAudioChannelAttributeTable[i].value)) {
aString.AssignASCII(kMozAudioChannelAttributeTable[i].tag);
break;
}
}
}
/* static */ void
AudioChannelService::GetDefaultAudioChannelString(nsAString& aString)
{
aString.AssignASCII("normal");
nsAutoString audioChannel(Preferences::GetString("media.defaultAudioChannel"));
if (!audioChannel.IsEmpty()) {
for (uint32_t i = 0; kMozAudioChannelAttributeTable[i].tag; ++i) {
if (audioChannel.EqualsASCII(kMozAudioChannelAttributeTable[i].tag)) {
aString = audioChannel;
break;
}
}
}
}
AudioChannelService::AudioChannelWindow*
AudioChannelService::GetOrCreateWindowData(nsPIDOMWindowOuter* aWindow)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
AudioChannelWindow* winData = GetWindowData(aWindow->WindowID());
if (!winData) {
winData = new AudioChannelWindow(aWindow->WindowID());
mWindows.AppendElement(winData);
}
return winData;
}
AudioChannelService::AudioChannelWindow*
AudioChannelService::GetWindowData(uint64_t aWindowID) const
{
nsTObserverArray<nsAutoPtr<AudioChannelWindow>>::ForwardIterator
iter(mWindows);
while (iter.HasMore()) {
AudioChannelWindow* next = iter.GetNext();
if (next->mWindowID == aWindowID) {
return next;
}
}
return nullptr;
}
float
AudioChannelService::GetAudioChannelVolume(nsPIDOMWindowOuter* aWindow,
AudioChannel aAudioChannel)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
return winData->mChannels[(uint32_t)aAudioChannel].mVolume;
}
NS_IMETHODIMP
AudioChannelService::GetAudioChannelVolume(mozIDOMWindowProxy* aWindow,
unsigned short aAudioChannel,
float* aVolume)
{
MOZ_ASSERT(NS_IsMainThread());
auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
*aVolume = GetAudioChannelVolume(window, (AudioChannel)aAudioChannel);
return NS_OK;
}
void
AudioChannelService::SetAudioChannelVolume(nsPIDOMWindowOuter* aWindow,
AudioChannel aAudioChannel,
float aVolume)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
MOZ_LOG(GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelService, SetAudioChannelVolume, window = %p, type = %d, "
"volume = %f\n", aWindow, aAudioChannel, aVolume));
AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
winData->mChannels[(uint32_t)aAudioChannel].mVolume = aVolume;
RefreshAgentsVolumeAndPropagate(aAudioChannel, aWindow);
}
NS_IMETHODIMP
AudioChannelService::SetAudioChannelVolume(mozIDOMWindowProxy* aWindow,
unsigned short aAudioChannel,
float aVolume)
{
MOZ_ASSERT(NS_IsMainThread());
auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
SetAudioChannelVolume(window, (AudioChannel)aAudioChannel, aVolume);
return NS_OK;
}
bool
AudioChannelService::GetAudioChannelMuted(nsPIDOMWindowOuter* aWindow,
AudioChannel aAudioChannel)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
return winData->mChannels[(uint32_t)aAudioChannel].mMuted;
}
NS_IMETHODIMP
AudioChannelService::GetAudioChannelMuted(mozIDOMWindowProxy* aWindow,
unsigned short aAudioChannel,
bool* aMuted)
{
MOZ_ASSERT(NS_IsMainThread());
auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
*aMuted = GetAudioChannelMuted(window, (AudioChannel)aAudioChannel);
return NS_OK;
}
void
AudioChannelService::SetAudioChannelMuted(nsPIDOMWindowOuter* aWindow,
AudioChannel aAudioChannel,
bool aMuted)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
MOZ_LOG(GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelService, SetAudioChannelMuted, window = %p, type = %d, "
"mute = %d\n", aWindow, aAudioChannel, aMuted));
if (aAudioChannel == AudioChannel::System) {
// Workaround for bug1183033, system channel type can always playback.
return;
}
AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
winData->mChannels[(uint32_t)aAudioChannel].mMuted = aMuted;
RefreshAgentsVolumeAndPropagate(aAudioChannel, aWindow);
}
NS_IMETHODIMP
AudioChannelService::SetAudioChannelMuted(mozIDOMWindowProxy* aWindow,
unsigned short aAudioChannel,
bool aMuted)
{
MOZ_ASSERT(NS_IsMainThread());
auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
SetAudioChannelMuted(window, (AudioChannel)aAudioChannel, aMuted);
return NS_OK;
}
bool
AudioChannelService::IsAudioChannelActive(nsPIDOMWindowOuter* aWindow,
AudioChannel aAudioChannel)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
MOZ_ASSERT(aWindow->IsOuterWindow());
AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
return !!winData->mChannels[(uint32_t)aAudioChannel].mNumberOfAgents;
}
NS_IMETHODIMP
AudioChannelService::IsAudioChannelActive(mozIDOMWindowProxy* aWindow,
unsigned short aAudioChannel,
bool* aActive)
{
MOZ_ASSERT(NS_IsMainThread());
auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
*aActive = IsAudioChannelActive(window, (AudioChannel)aAudioChannel);
return NS_OK;
}
void
AudioChannelService::SetDefaultVolumeControlChannel(int32_t aChannel,
bool aVisible)
{
SetDefaultVolumeControlChannelInternal(aChannel, aVisible,
CONTENT_PROCESS_ID_MAIN);
}
void
AudioChannelService::SetDefaultVolumeControlChannelInternal(int32_t aChannel,
bool aVisible,
uint64_t aChildID)
{
if (!IsParentProcess()) {
ContentChild* cc = ContentChild::GetSingleton();
if (cc) {
cc->SendAudioChannelChangeDefVolChannel(aChannel, aVisible);
}
return;
}
// If this child is in the background and mDefChannelChildID is set to
// others then it means other child in the foreground already set it's
// own default channel.
if (!aVisible && mDefChannelChildID != aChildID) {
return;
}
// Workaround for the call screen app. The call screen app is running on the
// main process, that will results in wrong visible state. Because we use the
// docshell's active state as visible state, the main process is always
// active. Therefore, we will see the strange situation that the visible
// state of the call screen is always true. If the mDefChannelChildID is set
// to others then it means other child in the foreground already set it's
// own default channel already.
// Summary :
// Child process : foreground app always can set type.
// Parent process : check the mDefChannelChildID.
else if (aChildID == CONTENT_PROCESS_ID_MAIN &&
mDefChannelChildID != CONTENT_PROCESS_ID_UNKNOWN) {
return;
}
mDefChannelChildID = aVisible ? aChildID : CONTENT_PROCESS_ID_UNKNOWN;
nsAutoString channelName;
if (aChannel == -1) {
channelName.AssignASCII("unknown");
} else {
GetAudioChannelString(static_cast<AudioChannel>(aChannel), channelName);
}
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->NotifyObservers(nullptr, "default-volume-channel-changed",
channelName.get());
}
}
void
AudioChannelService::MaybeSendStatusUpdate()
{
if (IsParentProcess()) {
return;
}
bool telephonyChannel = TelephonyChannelIsActive();
bool contentOrNormalChannel = ContentOrNormalChannelIsActive();
bool anyChannel = AnyAudioChannelIsActive();
if (telephonyChannel == mTelephonyChannel &&
contentOrNormalChannel == mContentOrNormalChannel &&
anyChannel == mAnyChannel) {
return;
}
mTelephonyChannel = telephonyChannel;
mContentOrNormalChannel = contentOrNormalChannel;
mAnyChannel = anyChannel;
ContentChild* cc = ContentChild::GetSingleton();
if (cc) {
cc->SendAudioChannelServiceStatus(telephonyChannel, contentOrNormalChannel,
anyChannel);
}
}
void
AudioChannelService::ChildStatusReceived(uint64_t aChildID,
bool aTelephonyChannel,
bool aContentOrNormalChannel,
bool aAnyChannel)
{
if (!aAnyChannel) {
RemoveChildStatus(aChildID);
return;
}
AudioChannelChildStatus* data = GetChildStatus(aChildID);
if (!data) {
data = new AudioChannelChildStatus(aChildID);
mPlayingChildren.AppendElement(data);
}
data->mActiveTelephonyChannel = aTelephonyChannel;
data->mActiveContentOrNormalChannel = aContentOrNormalChannel;
}
void
AudioChannelService::RefreshAgentsAudioFocusChanged(AudioChannelAgent* aAgent,
bool aActive)
{
MOZ_ASSERT(aAgent);
nsTObserverArray<nsAutoPtr<AudioChannelWindow>>::ForwardIterator
iter(mWindows);
while (iter.HasMore()) {
AudioChannelWindow* winData = iter.GetNext();
if (winData->mOwningAudioFocus) {
winData->AudioFocusChanged(aAgent, aActive);
}
}
}
void
AudioChannelService::AudioChannelWindow::RequestAudioFocus(AudioChannelAgent* aAgent)
{
MOZ_ASSERT(aAgent);
// We already have the audio focus. No operation is needed.
if (mOwningAudioFocus) {
return;
}
// Only foreground window can request audio focus, but it would still own the
// audio focus even it goes to background. Audio focus would be abandoned
// only when other foreground window starts audio competing.
// One exception is if the pref "media.block-autoplay-until-in-foreground"
// is on and the background page is the non-visited before. Because the media
// in that page would be blocked until the page is going to foreground.
mOwningAudioFocus = (!(aAgent->Window()->IsBackground()) ||
aAgent->Window()->GetMediaSuspend() == nsISuspendedTypes::SUSPENDED_BLOCK) ;
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelWindow, RequestAudioFocus, this = %p, "
"agent = %p, owning audio focus = %d\n",
this, aAgent, mOwningAudioFocus));
}
void
AudioChannelService::AudioChannelWindow::NotifyAudioCompetingChanged(AudioChannelAgent* aAgent,
bool aActive)
{
// This function may be called after RemoveAgentAndReduceAgentsNum(), so the
// agent may be not contained in mAgent. In addition, the agent would still
// be alive because we have kungFuDeathGrip in UnregisterAudioChannelAgent().
MOZ_ASSERT(aAgent);
RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
MOZ_ASSERT(service);
if (!service->IsEnableAudioCompeting()) {
return;
}
if (!IsAgentInvolvingInAudioCompeting(aAgent)) {
return;
}
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelWindow, NotifyAudioCompetingChanged, this = %p, "
"agent = %p, active = %d\n",
this, aAgent, aActive));
service->RefreshAgentsAudioFocusChanged(aAgent, aActive);
}
bool
AudioChannelService::AudioChannelWindow::IsAgentInvolvingInAudioCompeting(AudioChannelAgent* aAgent) const
{
MOZ_ASSERT(aAgent);
if(!mOwningAudioFocus) {
return false;
}
if (IsAudioCompetingInSameTab()) {
return false;
}
// TODO : add MediaSession::ambient kind, because it doens't interact with
// other kinds.
return true;
}
bool
AudioChannelService::AudioChannelWindow::IsAudioCompetingInSameTab() const
{
return (mOwningAudioFocus && mAudibleAgents.Length() > 1);
}
void
AudioChannelService::AudioChannelWindow::AudioFocusChanged(AudioChannelAgent* aNewPlayingAgent,
bool aActive)
{
// This agent isn't always known for the current window, because it can comes
// from other window.
MOZ_ASSERT(aNewPlayingAgent);
if (mAudibleAgents.IsEmpty()) {
// These would happen in two situations,
// (1) Audio in page A was ended, and another page B want to play audio.
// Page A should abandon its focus.
// (2) Audio was paused by remote-control, page should still own the focus.
mOwningAudioFocus = IsContainingPlayingAgent(aNewPlayingAgent);
} else {
nsTObserverArray<AudioChannelAgent*>::ForwardIterator iter(mAudibleAgents);
while (iter.HasMore()) {
AudioChannelAgent* agent = iter.GetNext();
MOZ_ASSERT(agent);
// Don't need to update the playing state of new playing agent.
if (agent == aNewPlayingAgent) {
continue;
}
uint32_t type = GetCompetingBehavior(agent,
aNewPlayingAgent->AudioChannelType(),
aActive);
// If window will be suspended, it needs to abandon the audio focus
// because only one window can own audio focus at a time. However, we
// would support multiple audio focus at the same time in the future.
mOwningAudioFocus = (type == nsISuspendedTypes::NONE_SUSPENDED);
// TODO : support other behaviors which are definded in MediaSession API.
switch (type) {
case nsISuspendedTypes::NONE_SUSPENDED:
case nsISuspendedTypes::SUSPENDED_STOP_DISPOSABLE:
agent->WindowSuspendChanged(type);
break;
}
}
}
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelWindow, AudioFocusChanged, this = %p, "
"OwningAudioFocus = %d\n", this, mOwningAudioFocus));
}
bool
AudioChannelService::AudioChannelWindow::IsContainingPlayingAgent(AudioChannelAgent* aAgent) const
{
return (aAgent->WindowID() == mWindowID);
}
uint32_t
AudioChannelService::AudioChannelWindow::GetCompetingBehavior(AudioChannelAgent* aAgent,
int32_t aIncomingChannelType,
bool aIncomingChannelActive) const
{
MOZ_ASSERT(aAgent);
MOZ_ASSERT(mAudibleAgents.Contains(aAgent));
uint32_t competingBehavior = nsISuspendedTypes::NONE_SUSPENDED;
int32_t presentChannelType = aAgent->AudioChannelType();
// TODO : add other competing cases for MediaSession API
if (presentChannelType == int32_t(AudioChannel::Normal) &&
aIncomingChannelType == int32_t(AudioChannel::Normal) &&
aIncomingChannelActive) {
competingBehavior = nsISuspendedTypes::SUSPENDED_STOP_DISPOSABLE;
}
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelWindow, GetCompetingBehavior, this = %p, "
"present type = %d, incoming channel = %d, behavior = %d\n",
this, presentChannelType, aIncomingChannelType, competingBehavior));
return competingBehavior;
}
/* static */ bool
AudioChannelService::IsAudioChannelMutedByDefault()
{
CreateServiceIfNeeded();
return sAudioChannelMutedByDefault;
}
void
AudioChannelService::AudioChannelWindow::AppendAgent(AudioChannelAgent* aAgent,
AudibleState aAudible)
{
MOZ_ASSERT(aAgent);
RequestAudioFocus(aAgent);
AppendAgentAndIncreaseAgentsNum(aAgent);
AudioCapturedChanged(aAgent, AudioCaptureState::eCapturing);
if (aAudible) {
AudioAudibleChanged(aAgent,
AudibleState::eAudible,
AudibleChangedReasons::eDataAudibleChanged);
}
}
void
AudioChannelService::AudioChannelWindow::RemoveAgent(AudioChannelAgent* aAgent)
{
MOZ_ASSERT(aAgent);
RemoveAgentAndReduceAgentsNum(aAgent);
AudioCapturedChanged(aAgent, AudioCaptureState::eNotCapturing);
AudioAudibleChanged(aAgent,
AudibleState::eNotAudible,
AudibleChangedReasons::ePauseStateChanged);
}
void
AudioChannelService::AudioChannelWindow::AppendAgentAndIncreaseAgentsNum(AudioChannelAgent* aAgent)
{
MOZ_ASSERT(aAgent);
MOZ_ASSERT(!mAgents.Contains(aAgent));
int32_t channel = aAgent->AudioChannelType();
mAgents.AppendElement(aAgent);
++mChannels[channel].mNumberOfAgents;
// The first one, we must inform the BrowserElementAudioChannel.
if (mChannels[channel].mNumberOfAgents == 1) {
NotifyChannelActive(aAgent->WindowID(),
static_cast<AudioChannel>(channel),
true);
}
}
void
AudioChannelService::AudioChannelWindow::RemoveAgentAndReduceAgentsNum(AudioChannelAgent* aAgent)
{
MOZ_ASSERT(aAgent);
MOZ_ASSERT(mAgents.Contains(aAgent));
int32_t channel = aAgent->AudioChannelType();
mAgents.RemoveElement(aAgent);
MOZ_ASSERT(mChannels[channel].mNumberOfAgents > 0);
--mChannels[channel].mNumberOfAgents;
if (mChannels[channel].mNumberOfAgents == 0) {
NotifyChannelActive(aAgent->WindowID(),
static_cast<AudioChannel>(channel),
false);
}
}
void
AudioChannelService::AudioChannelWindow::AudioCapturedChanged(AudioChannelAgent* aAgent,
AudioCaptureState aCapture)
{
MOZ_ASSERT(aAgent);
if (mIsAudioCaptured) {
aAgent->WindowAudioCaptureChanged(aAgent->InnerWindowID(), aCapture);
}
}
void
AudioChannelService::AudioChannelWindow::AudioAudibleChanged(AudioChannelAgent* aAgent,
AudibleState aAudible,
AudibleChangedReasons aReason)
{
MOZ_ASSERT(aAgent);
if (aAudible) {
AppendAudibleAgentIfNotContained(aAgent, aReason);
} else {
RemoveAudibleAgentIfContained(aAgent, aReason);
}
NotifyAudioCompetingChanged(aAgent, aAudible);
}
void
AudioChannelService::AudioChannelWindow::AppendAudibleAgentIfNotContained(AudioChannelAgent* aAgent,
AudibleChangedReasons aReason)
{
MOZ_ASSERT(aAgent);
MOZ_ASSERT(mAgents.Contains(aAgent));
if (!mAudibleAgents.Contains(aAgent)) {
mAudibleAgents.AppendElement(aAgent);
if (IsFirstAudibleAgent()) {
NotifyAudioAudibleChanged(aAgent->Window(), AudibleState::eAudible, aReason);
}
}
}
void
AudioChannelService::AudioChannelWindow::RemoveAudibleAgentIfContained(AudioChannelAgent* aAgent,
AudibleChangedReasons aReason)
{
MOZ_ASSERT(aAgent);
if (mAudibleAgents.Contains(aAgent)) {
mAudibleAgents.RemoveElement(aAgent);
if (IsLastAudibleAgent()) {
NotifyAudioAudibleChanged(aAgent->Window(), AudibleState::eNotAudible, aReason);
}
}
}
bool
AudioChannelService::AudioChannelWindow::IsFirstAudibleAgent() const
{
return (mAudibleAgents.Length() == 1);
}
bool
AudioChannelService::AudioChannelWindow::IsLastAudibleAgent() const
{
return mAudibleAgents.IsEmpty();
}
void
AudioChannelService::AudioChannelWindow::NotifyAudioAudibleChanged(nsPIDOMWindowOuter* aWindow,
AudibleState aAudible,
AudibleChangedReasons aReason)
{
RefPtr<AudioPlaybackRunnable> runnable =
new AudioPlaybackRunnable(aWindow, aAudible, aReason);
nsresult rv = NS_DispatchToCurrentThread(runnable);
NS_WARN_IF(NS_FAILED(rv));
}
void
AudioChannelService::AudioChannelWindow::NotifyChannelActive(uint64_t aWindowID,
AudioChannel aChannel,
bool aActive)
{
RefPtr<NotifyChannelActiveRunnable> runnable =
new NotifyChannelActiveRunnable(aWindowID, aChannel, aActive);
nsresult rv = NS_DispatchToCurrentThread(runnable);
NS_WARN_IF(NS_FAILED(rv));
}
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