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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* 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 "AudioStreamTrack.h"
#include "MediaTrackGraph.h"
#include "nsContentUtils.h"
namespace mozilla::dom {
RefPtr<GenericPromise> AudioStreamTrack::AddAudioOutput(
void* aKey, AudioDeviceInfo* aSink) {
MOZ_ASSERT(!mCrossGraphs.Get(aKey),
"A previous audio output for this aKey should have been removed");
if (Ended()) {
return GenericPromise::CreateAndResolve(true, __func__);
}
UniquePtr<CrossGraphPort> manager;
if (!aSink || !(manager = CrossGraphPort::Connect(this, aSink, mWindow))) {
// We are setting the default output device.
mTrack->AddAudioOutput(aKey);
return GenericPromise::CreateAndResolve(true, __func__);
}
// We are setting a non-default output device.
const UniquePtr<CrossGraphPort>& crossGraph = mCrossGraphs.WithEntryHandle(
aKey, [&manager](auto entry) -> UniquePtr<CrossGraphPort>& {
return entry.Insert(std::move(manager));
});
crossGraph->AddAudioOutput(aKey);
return crossGraph->EnsureConnected();
}
void AudioStreamTrack::RemoveAudioOutput(void* aKey) {
if (Ended()) {
return;
}
if (auto entry = mCrossGraphs.Lookup(aKey)) {
// The audio output for this track is directed to a non-default device.
// The CrossGraphPort for this output is no longer required so remove it.
entry.Remove();
return;
}
mTrack->RemoveAudioOutput(aKey);
}
void AudioStreamTrack::SetAudioOutputVolume(void* aKey, float aVolume) {
if (Ended()) {
return;
}
if (CrossGraphPort* cgm = mCrossGraphs.Get(aKey)) {
cgm->SetAudioOutputVolume(aKey, aVolume);
return;
}
mTrack->SetAudioOutputVolume(aKey, aVolume);
}
void AudioStreamTrack::GetLabel(nsAString& aLabel, CallerType aCallerType) {
nsIGlobalObject* global =
GetParentObject() ? GetParentObject()->AsGlobal() : nullptr;
if (nsContentUtils::ShouldResistFingerprinting(aCallerType, global,
RFPTarget::StreamTrackLabel)) {
aLabel.AssignLiteral("Internal Microphone");
return;
}
MediaStreamTrack::GetLabel(aLabel, aCallerType);
}
already_AddRefed<MediaStreamTrack> AudioStreamTrack::CloneInternal() {
return do_AddRef(new AudioStreamTrack(mWindow, mInputTrack, mSource,
ReadyState(), Muted(), mConstraints));
}
void AudioStreamTrack::SetReadyState(MediaStreamTrackState aState) {
if (!mCrossGraphs.IsEmpty() && !Ended() &&
mReadyState == MediaStreamTrackState::Live &&
aState == MediaStreamTrackState::Ended) {
mCrossGraphs.Clear();
}
MediaStreamTrack::SetReadyState(aState);
}
} // namespace mozilla::dom
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