gecko-dev/dom/audiochannel/AudioChannelAgent.cpp

357 строки
10 KiB
C++

/* -*- 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 "AudioChannelAgent.h"
#include "AudioChannelService.h"
#include "mozilla/Preferences.h"
#include "nsContentUtils.h"
#include "nsIDocument.h"
#include "nsIDOMWindow.h"
#include "nsPIDOMWindow.h"
#include "nsIURI.h"
using namespace mozilla::dom;
NS_IMPL_CYCLE_COLLECTION_CLASS(AudioChannelAgent)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(AudioChannelAgent)
tmp->Shutdown();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCallback)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AudioChannelAgent)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCallback)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AudioChannelAgent)
NS_INTERFACE_MAP_ENTRY(nsIAudioChannelAgent)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(AudioChannelAgent)
NS_IMPL_CYCLE_COLLECTING_RELEASE(AudioChannelAgent)
AudioChannelAgent::AudioChannelAgent()
: mAudioChannelType(AUDIO_AGENT_CHANNEL_ERROR)
, mInnerWindowID(0)
, mIsRegToService(false)
{
}
AudioChannelAgent::~AudioChannelAgent()
{
Shutdown();
}
void
AudioChannelAgent::Shutdown()
{
if (mIsRegToService) {
NotifyStoppedPlaying();
}
}
NS_IMETHODIMP AudioChannelAgent::GetAudioChannelType(int32_t *aAudioChannelType)
{
*aAudioChannelType = mAudioChannelType;
return NS_OK;
}
NS_IMETHODIMP
AudioChannelAgent::Init(mozIDOMWindow* aWindow, int32_t aChannelType,
nsIAudioChannelAgentCallback *aCallback)
{
return InitInternal(nsPIDOMWindowInner::From(aWindow), aChannelType,
aCallback, /* useWeakRef = */ false);
}
NS_IMETHODIMP
AudioChannelAgent::InitWithWeakCallback(mozIDOMWindow* aWindow,
int32_t aChannelType,
nsIAudioChannelAgentCallback *aCallback)
{
return InitInternal(nsPIDOMWindowInner::From(aWindow), aChannelType,
aCallback, /* useWeakRef = */ true);
}
nsresult
AudioChannelAgent::FindCorrectWindow(nsPIDOMWindowInner* aWindow)
{
MOZ_ASSERT(aWindow->IsInnerWindow());
mWindow = aWindow->GetScriptableTop();
if (NS_WARN_IF(!mWindow)) {
return NS_OK;
}
// From here we do an hack for nested iframes.
// The system app doesn't have access to the nested iframe objects so it
// cannot control the volume of the agents running in nested apps. What we do
// here is to assign those Agents to the top scriptable window of the parent
// iframe (what is controlled by the system app).
// For doing this we go recursively back into the chain of windows until we
// find apps that are not the system one.
nsCOMPtr<nsPIDOMWindowOuter> outerParent = mWindow->GetParent();
if (!outerParent || outerParent == mWindow) {
return NS_OK;
}
nsCOMPtr<nsPIDOMWindowInner> parent = outerParent->GetCurrentInnerWindow();
if (!parent) {
return NS_OK;
}
nsCOMPtr<nsIDocument> doc = parent->GetExtantDoc();
if (!doc) {
return NS_OK;
}
if (nsContentUtils::IsChromeDoc(doc)) {
return NS_OK;
}
nsAdoptingCString systemAppUrl =
mozilla::Preferences::GetCString("b2g.system_startup_url");
if (!systemAppUrl) {
return NS_OK;
}
nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
nsCOMPtr<nsIURI> uri;
principal->GetURI(getter_AddRefs(uri));
if (uri) {
nsAutoCString spec;
uri->GetSpec(spec);
if (spec.Equals(systemAppUrl)) {
return NS_OK;
}
}
return FindCorrectWindow(parent);
}
nsresult
AudioChannelAgent::InitInternal(nsPIDOMWindowInner* aWindow,
int32_t aChannelType,
nsIAudioChannelAgentCallback *aCallback,
bool aUseWeakRef)
{
// We syncd the enum of channel type between nsIAudioChannelAgent.idl and
// AudioChannelBinding.h the same.
MOZ_ASSERT(int(AUDIO_AGENT_CHANNEL_NORMAL) == int(AudioChannel::Normal) &&
int(AUDIO_AGENT_CHANNEL_CONTENT) == int(AudioChannel::Content) &&
int(AUDIO_AGENT_CHANNEL_NOTIFICATION) == int(AudioChannel::Notification) &&
int(AUDIO_AGENT_CHANNEL_ALARM) == int(AudioChannel::Alarm) &&
int(AUDIO_AGENT_CHANNEL_TELEPHONY) == int(AudioChannel::Telephony) &&
int(AUDIO_AGENT_CHANNEL_RINGER) == int(AudioChannel::Ringer) &&
int(AUDIO_AGENT_CHANNEL_SYSTEM) == int(AudioChannel::System) &&
int(AUDIO_AGENT_CHANNEL_PUBLICNOTIFICATION) == int(AudioChannel::Publicnotification),
"Enum of channel on nsIAudioChannelAgent.idl should be the same with AudioChannelBinding.h");
if (mAudioChannelType != AUDIO_AGENT_CHANNEL_ERROR ||
aChannelType > AUDIO_AGENT_CHANNEL_SYSTEM ||
aChannelType < AUDIO_AGENT_CHANNEL_NORMAL) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!aWindow)) {
return NS_OK;
}
MOZ_ASSERT(aWindow->IsInnerWindow());
mInnerWindowID = aWindow->WindowID();
nsresult rv = FindCorrectWindow(aWindow);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
mAudioChannelType = aChannelType;
if (aUseWeakRef) {
mWeakCallback = do_GetWeakReference(aCallback);
} else {
mCallback = aCallback;
}
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelAgent, InitInternal, this = %p, type = %d, "
"owner = %p, hasCallback = %d\n", this, mAudioChannelType,
mWindow.get(), (!!mCallback || !!mWeakCallback)));
return NS_OK;
}
NS_IMETHODIMP
AudioChannelAgent::NotifyStartedPlaying(AudioPlaybackConfig* aConfig,
bool aAudible)
{
if (NS_WARN_IF(!aConfig)) {
return NS_ERROR_FAILURE;
}
RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
service == nullptr || mIsRegToService) {
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(AudioChannelService::AudibleState::eAudible == true &&
AudioChannelService::AudibleState::eNotAudible == false);
service->RegisterAudioChannelAgent(this,
static_cast<AudioChannelService::AudibleState>(aAudible));
AudioPlaybackConfig config = service->GetMediaConfig(mWindow,
mAudioChannelType);
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelAgent, NotifyStartedPlaying, this = %p, "
"audible = %d, mute = %d, volume = %f, suspend = %d\n", this,
aAudible, config.mMuted, config.mVolume, config.mSuspend));
aConfig->SetConfig(config.mVolume, config.mMuted, config.mSuspend);
mIsRegToService = true;
return NS_OK;
}
NS_IMETHODIMP
AudioChannelAgent::NotifyStoppedPlaying()
{
if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
!mIsRegToService) {
return NS_ERROR_FAILURE;
}
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelAgent, NotifyStoppedPlaying, this = %p\n", this));
RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
if (service) {
service->UnregisterAudioChannelAgent(this);
}
mIsRegToService = false;
return NS_OK;
}
NS_IMETHODIMP
AudioChannelAgent::NotifyStartedAudible(bool aAudible, uint32_t aReason)
{
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelAgent, NotifyStartedAudible, this = %p, "
"audible = %d, reason = %d\n", this, aAudible, aReason));
RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
if (NS_WARN_IF(!service)) {
return NS_ERROR_FAILURE;
}
service->AudioAudibleChanged(
this,
static_cast<AudioChannelService::AudibleState>(aAudible),
static_cast<AudioChannelService::AudibleChangedReasons>(aReason));
return NS_OK;
}
already_AddRefed<nsIAudioChannelAgentCallback>
AudioChannelAgent::GetCallback()
{
nsCOMPtr<nsIAudioChannelAgentCallback> callback = mCallback;
if (!callback) {
callback = do_QueryReferent(mWeakCallback);
}
return callback.forget();
}
void
AudioChannelAgent::WindowVolumeChanged()
{
nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
if (!callback) {
return;
}
AudioPlaybackConfig config = GetMediaConfig();
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelAgent, WindowVolumeChanged, this = %p, mute = %d, "
"volume = %f\n", this, config.mMuted, config.mVolume));
callback->WindowVolumeChanged(config.mVolume, config.mMuted);
}
void
AudioChannelAgent::WindowSuspendChanged(nsSuspendedTypes aSuspend)
{
nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
if (!callback) {
return;
}
if (!IsDisposableSuspend(aSuspend)) {
aSuspend = GetMediaConfig().mSuspend;
}
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelAgent, WindowSuspendChanged, this = %p, "
"suspended = %d\n", this, aSuspend));
callback->WindowSuspendChanged(aSuspend);
}
AudioPlaybackConfig
AudioChannelAgent::GetMediaConfig()
{
RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
AudioPlaybackConfig config(1.0, false, nsISuspendedTypes::NONE_SUSPENDED);
if (service) {
config = service->GetMediaConfig(mWindow, mAudioChannelType);
}
return config;
}
bool
AudioChannelAgent::IsDisposableSuspend(nsSuspendedTypes aSuspend) const
{
return (aSuspend == nsISuspendedTypes::SUSPENDED_PAUSE_DISPOSABLE ||
aSuspend == nsISuspendedTypes::SUSPENDED_STOP_DISPOSABLE);
}
uint64_t
AudioChannelAgent::WindowID() const
{
return mWindow ? mWindow->WindowID() : 0;
}
uint64_t
AudioChannelAgent::InnerWindowID() const
{
return mInnerWindowID;
}
void
AudioChannelAgent::WindowAudioCaptureChanged(uint64_t aInnerWindowID,
bool aCapture)
{
if (aInnerWindowID != mInnerWindowID) {
return;
}
nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
if (!callback) {
return;
}
MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
("AudioChannelAgent, WindowAudioCaptureChanged, this = %p, "
"capture = %d\n", this, aCapture));
callback->WindowAudioCaptureChanged(aCapture);
}