dom/media/AudioStreamTrack.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   4  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "AudioStreamTrack.h"
   7
   8 #include "MediaTrackGraph.h"
   9 #include "nsContentUtils.h"
  10
  11 namespace mozilla::dom {
  12
  13 RefPtr<GenericPromise> AudioStreamTrack::AddAudioOutput(
  14     void* aKey, AudioDeviceInfo* aSink) {
  15   if (Ended()) {
  16     return GenericPromise::CreateAndResolve(true, __func__);
  17   }
  18
  19   mTrack->AddAudioOutput(aKey, aSink);
  20   return mTrack->Graph()->NotifyWhenDeviceStarted(aSink);
  21 }
  22
  23 void AudioStreamTrack::RemoveAudioOutput(void* aKey) {
  24   if (Ended()) {
  25     return;
  26   }
  27
  28   mTrack->RemoveAudioOutput(aKey);
  29 }
  30
  31 void AudioStreamTrack::SetAudioOutputVolume(void* aKey, float aVolume) {
  32   if (Ended()) {
  33     return;
  34   }
  35
  36   mTrack->SetAudioOutputVolume(aKey, aVolume);
  37 }
  38
  39 void AudioStreamTrack::GetLabel(nsAString& aLabel, CallerType aCallerType) {
  40   nsIGlobalObject* global =
  41       GetParentObject() ? GetParentObject()->AsGlobal() : nullptr;
  42   if (nsContentUtils::ShouldResistFingerprinting(aCallerType, global,
  43                                                  RFPTarget::StreamTrackLabel)) {
  44     aLabel.AssignLiteral("Internal Microphone");
  45     return;
  46   }
  47   MediaStreamTrack::GetLabel(aLabel, aCallerType);
  48 }
  49
  50 already_AddRefed<MediaStreamTrack> AudioStreamTrack::CloneInternal() {
  51   return do_AddRef(new AudioStreamTrack(mWindow, mInputTrack, mSource,
  52                                         ReadyState(), Muted(), mConstraints));
  53 }
  54
  55 }  // namespace mozilla::dom