nsresult
MediaManager::Observe(nsISupports* aSubject, const char* aTopic,
const PRUnichar* aData)
{
NS_ASSERTION(NS_IsMainThread(), "Observer invoked off the main thread");
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (!strcmp(aTopic, "xpcom-shutdown")) {
obs->RemoveObserver(this, "xpcom-shutdown");
obs->RemoveObserver(this, "getUserMedia:response:allow");
obs->RemoveObserver(this, "getUserMedia:response:deny");
obs->RemoveObserver(this, "getUserMedia:revoke");
// Close off any remaining active windows.
{
MutexAutoLock lock(mMutex);
GetActiveWindows()->Clear();
mActiveCallbacks.Clear();
sSingleton = nullptr;
}
return NS_OK;
}
if (!strcmp(aTopic, "getUserMedia:response:allow")) {
nsString key(aData);
nsRefPtr<nsRunnable> runnable;
if (!mActiveCallbacks.Get(key, getter_AddRefs(runnable))) {
return NS_OK;
}
mActiveCallbacks.Remove(key);
if (aSubject) {
// A particular device or devices were chosen by the user.
// NOTE: does not allow setting a device to null; assumes nullptr
GetUserMediaRunnable* gUMRunnable =
static_cast<GetUserMediaRunnable*>(runnable.get());
nsCOMPtr<nsISupportsArray> array(do_QueryInterface(aSubject));
MOZ_ASSERT(array);
uint32_t len = 0;
array->Count(&len);
MOZ_ASSERT(len);
if (!len) {
gUMRunnable->Denied(); // neither audio nor video were selected
return NS_OK;
}
for (uint32_t i = 0; i < len; i++) {
nsCOMPtr<nsISupports> supports;
array->GetElementAt(i,getter_AddRefs(supports));
nsCOMPtr<nsIMediaDevice> device(do_QueryInterface(supports));
MOZ_ASSERT(device); // shouldn't be returning anything else...
if (device) {
nsString type;
device->GetType(type);
if (type.EqualsLiteral("video")) {
gUMRunnable->SetVideoDevice(static_cast<MediaDevice*>(device.get()));
} else if (type.EqualsLiteral("audio")) {
gUMRunnable->SetAudioDevice(static_cast<MediaDevice*>(device.get()));
} else {
NS_WARNING("Unknown device type in getUserMedia");
}
}
}
}
// Reuse the same thread to save memory.
mMediaThread->Dispatch(runnable, NS_DISPATCH_NORMAL);
return NS_OK;
}
if (!strcmp(aTopic, "getUserMedia:response:deny")) {
nsString key(aData);
nsRefPtr<nsRunnable> runnable;
if (!mActiveCallbacks.Get(key, getter_AddRefs(runnable))) {
return NS_OK;
}
mActiveCallbacks.Remove(key);
GetUserMediaRunnable* gUMRunnable =
static_cast<GetUserMediaRunnable*>(runnable.get());
gUMRunnable->Denied();
return NS_OK;
}
if (!strcmp(aTopic, "getUserMedia:revoke")) {
nsresult rv;
uint64_t windowID = nsString(aData).ToInteger64(&rv);
MOZ_ASSERT(NS_SUCCEEDED(rv));
if (NS_SUCCEEDED(rv)) {
LOG(("Revoking MediaCapture access for window %llu",windowID));
OnNavigation(windowID);
}
return NS_OK;
}
return NS_OK;
}
nsresult
MediaManager::Observe(nsISupports* aSubject, const char* aTopic,
const PRUnichar* aData)
{
NS_ASSERTION(NS_IsMainThread(), "Observer invoked off the main thread");
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (!strcmp(aTopic, "xpcom-shutdown")) {
obs->RemoveObserver(this, "xpcom-shutdown");
obs->RemoveObserver(this, "getUserMedia:response:allow");
obs->RemoveObserver(this, "getUserMedia:response:deny");
// Close off any remaining active windows.
{
MutexAutoLock lock(mMutex);
GetActiveWindows()->Clear();
mActiveCallbacks.Clear();
sSingleton = nullptr;
}
return NS_OK;
}
if (!strcmp(aTopic, "getUserMedia:response:allow")) {
nsString key(aData);
nsRefPtr<nsRunnable> runnable;
if (!mActiveCallbacks.Get(key, getter_AddRefs(runnable))) {
return NS_OK;
}
mActiveCallbacks.Remove(key);
if (aSubject) {
// A particular device was chosen by the user.
// NOTE: does not allow setting a device to null; assumes nullptr
nsCOMPtr<nsIMediaDevice> device = do_QueryInterface(aSubject);
if (device) {
GetUserMediaRunnable* gUMRunnable =
static_cast<GetUserMediaRunnable*>(runnable.get());
nsString type;
device->GetType(type);
if (type.EqualsLiteral("video")) {
gUMRunnable->SetVideoDevice(static_cast<MediaDevice*>(device.get()));
} else if (type.EqualsLiteral("audio")) {
gUMRunnable->SetAudioDevice(static_cast<MediaDevice*>(device.get()));
} else {
NS_WARNING("Unknown device type in getUserMedia");
}
}
}
// Reuse the same thread to save memory.
mMediaThread->Dispatch(runnable, NS_DISPATCH_NORMAL);
return NS_OK;
}
if (!strcmp(aTopic, "getUserMedia:response:deny")) {
nsString key(aData);
nsRefPtr<nsRunnable> runnable;
if (!mActiveCallbacks.Get(key, getter_AddRefs(runnable))) {
return NS_OK;
}
mActiveCallbacks.Remove(key);
GetUserMediaRunnable* gUMRunnable =
static_cast<GetUserMediaRunnable*>(runnable.get());
gUMRunnable->Denied();
return NS_OK;
}
return NS_OK;
}