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87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AudioStreamTrack.h"
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#include "MediaTrackGraph.h"
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#include "nsContentUtils.h"
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namespace mozilla::dom {
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RefPtr<GenericPromise> AudioStreamTrack::AddAudioOutput(
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void* aKey, AudioDeviceInfo* aSink) {
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MOZ_ASSERT(!mCrossGraphs.Get(aKey),
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"A previous audio output for this aKey should have been removed");
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if (Ended()) {
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return GenericPromise::CreateAndResolve(true, __func__);
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}
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UniquePtr<CrossGraphPort> manager;
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if (!aSink || !(manager = CrossGraphPort::Connect(this, aSink, mWindow))) {
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// We are setting the default output device.
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mTrack->AddAudioOutput(aKey);
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return GenericPromise::CreateAndResolve(true, __func__);
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}
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// We are setting a non-default output device.
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const UniquePtr<CrossGraphPort>& crossGraph = mCrossGraphs.WithEntryHandle(
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aKey, [&manager](auto entry) -> UniquePtr<CrossGraphPort>& {
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return entry.Insert(std::move(manager));
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});
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crossGraph->AddAudioOutput(aKey);
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return crossGraph->EnsureConnected();
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}
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void AudioStreamTrack::RemoveAudioOutput(void* aKey) {
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if (Ended()) {
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return;
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}
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if (auto entry = mCrossGraphs.Lookup(aKey)) {
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// The audio output for this track is directed to a non-default device.
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// The CrossGraphPort for this output is no longer required so remove it.
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entry.Remove();
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return;
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}
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mTrack->RemoveAudioOutput(aKey);
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}
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void AudioStreamTrack::SetAudioOutputVolume(void* aKey, float aVolume) {
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if (Ended()) {
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return;
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}
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if (CrossGraphPort* cgm = mCrossGraphs.Get(aKey)) {
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cgm->SetAudioOutputVolume(aKey, aVolume);
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return;
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}
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mTrack->SetAudioOutputVolume(aKey, aVolume);
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}
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void AudioStreamTrack::GetLabel(nsAString& aLabel, CallerType aCallerType) {
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nsIGlobalObject* global =
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GetParentObject() ? GetParentObject()->AsGlobal() : nullptr;
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if (nsContentUtils::ShouldResistFingerprinting(aCallerType, global)) {
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aLabel.AssignLiteral("Internal Microphone");
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return;
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}
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MediaStreamTrack::GetLabel(aLabel, aCallerType);
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}
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already_AddRefed<MediaStreamTrack> AudioStreamTrack::CloneInternal() {
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return do_AddRef(new AudioStreamTrack(mWindow, mInputTrack, mSource,
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ReadyState(), Muted(), mConstraints));
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}
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void AudioStreamTrack::SetReadyState(MediaStreamTrackState aState) {
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if (!mCrossGraphs.IsEmpty() && !Ended() &&
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mReadyState == MediaStreamTrackState::Live &&
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aState == MediaStreamTrackState::Ended) {
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mCrossGraphs.Clear();
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}
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MediaStreamTrack::SetReadyState(aState);
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}
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} // namespace mozilla::dom
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