/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim:set ts=2 sw=2 et tw=78: */ /* 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 "MediaTrack.h" #include "MediaTrackList.h" #include "mozilla/AsyncEventDispatcher.h" #include "mozilla/dom/HTMLMediaElement.h" #include "mozilla/dom/AudioTrack.h" #include "mozilla/dom/VideoStreamTrack.h" #include "mozilla/dom/VideoTrack.h" #include "mozilla/dom/TrackEvent.h" #include "nsThreadUtils.h" namespace mozilla { namespace dom { MediaTrackList::MediaTrackList(nsPIDOMWindowInner* aOwnerWindow, HTMLMediaElement* aMediaElement) : DOMEventTargetHelper(aOwnerWindow) , mMediaElement(aMediaElement) { } MediaTrackList::~MediaTrackList() { } NS_IMPL_CYCLE_COLLECTION_INHERITED(MediaTrackList, DOMEventTargetHelper, mTracks, mMediaElement) NS_IMPL_ADDREF_INHERITED(MediaTrackList, DOMEventTargetHelper) NS_IMPL_RELEASE_INHERITED(MediaTrackList, DOMEventTargetHelper) NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(MediaTrackList) NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper) MediaTrack* MediaTrackList::operator[](uint32_t aIndex) { return mTracks.ElementAt(aIndex); } MediaTrack* MediaTrackList::IndexedGetter(uint32_t aIndex, bool& aFound) { aFound = aIndex < mTracks.Length(); if (!aFound) { return nullptr; } return mTracks[aIndex]; } MediaTrack* MediaTrackList::GetTrackById(const nsAString& aId) { for (uint32_t i = 0; i < mTracks.Length(); ++i) { if (aId.Equals(mTracks[i]->GetId())) { return mTracks[i]; } } return nullptr; } void MediaTrackList::AddTrack(MediaTrack* aTrack) { mTracks.AppendElement(aTrack); aTrack->Init(GetOwner()); aTrack->SetTrackList(this); CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("addtrack")); if ((!aTrack->AsAudioTrack() || !aTrack->AsAudioTrack()->Enabled()) && (!aTrack->AsVideoTrack() || !aTrack->AsVideoTrack()->Selected())) { // Track not enabled, no need to notify media element. return; } if (HTMLMediaElement* element = GetMediaElement()) { element->NotifyMediaTrackEnabled(aTrack); } } void MediaTrackList::RemoveTrack(const RefPtr<MediaTrack>& aTrack) { mTracks.RemoveElement(aTrack); aTrack->SetEnabledInternal(false, MediaTrack::FIRE_NO_EVENTS); aTrack->SetTrackList(nullptr); CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("removetrack")); } void MediaTrackList::RemoveTracks() { while (!mTracks.IsEmpty()) { RefPtr<MediaTrack> track = mTracks.LastElement(); RemoveTrack(track); } } already_AddRefed<AudioTrack> MediaTrackList::CreateAudioTrack(const nsAString& aId, const nsAString& aKind, const nsAString& aLabel, const nsAString& aLanguage, bool aEnabled) { RefPtr<AudioTrack> track = new AudioTrack(aId, aKind, aLabel, aLanguage, aEnabled); return track.forget(); } already_AddRefed<VideoTrack> MediaTrackList::CreateVideoTrack(const nsAString& aId, const nsAString& aKind, const nsAString& aLabel, const nsAString& aLanguage, VideoStreamTrack* aVideoTrack) { RefPtr<VideoTrack> track = new VideoTrack(aId, aKind, aLabel, aLanguage, aVideoTrack); return track.forget(); } void MediaTrackList::EmptyTracks() { for (uint32_t i = 0; i < mTracks.Length(); ++i) { mTracks[i]->SetEnabledInternal(false, MediaTrack::FIRE_NO_EVENTS); mTracks[i]->SetTrackList(nullptr); } mTracks.Clear(); } void MediaTrackList::CreateAndDispatchChangeEvent() { RefPtr<AsyncEventDispatcher> asyncDispatcher = new AsyncEventDispatcher(this, NS_LITERAL_STRING("change"), false); asyncDispatcher->PostDOMEvent(); } void MediaTrackList::CreateAndDispatchTrackEventRunner(MediaTrack* aTrack, const nsAString& aEventName) { TrackEventInit eventInit; if (aTrack->AsAudioTrack()) { eventInit.mTrack.SetValue().SetAsAudioTrack() = aTrack->AsAudioTrack(); } else if (aTrack->AsVideoTrack()) { eventInit.mTrack.SetValue().SetAsVideoTrack() = aTrack->AsVideoTrack(); } RefPtr<TrackEvent> event = TrackEvent::Constructor(this, aEventName, eventInit); RefPtr<AsyncEventDispatcher> asyncDispatcher = new AsyncEventDispatcher(this, event); asyncDispatcher->PostDOMEvent(); } } // namespace dom } // namespace mozilla