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/* -*- 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/VideoTrack.h"
#include "mozilla/dom/TrackEvent.h"
#include "nsThreadUtils.h"
namespace mozilla::dom {
MediaTrackList::MediaTrackList(nsIGlobalObject* aOwnerObject,
HTMLMediaElement* aMediaElement)
: DOMEventTargetHelper(aOwnerObject), mMediaElement(aMediaElement) {}
MediaTrackList::~MediaTrackList() = default;
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(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) {
MOZ_ASSERT(aTrack->GetOwnerGlobal() == GetOwnerGlobal(),
"Where is this track from?");
mTracks.AppendElement(aTrack);
aTrack->SetTrackList(this);
CreateAndDispatchTrackEventRunner(aTrack, u"addtrack"_ns);
if (HTMLMediaElement* element = GetMediaElement()) {
element->NotifyMediaTrackAdded(aTrack);
}
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, u"removetrack"_ns);
if (HTMLMediaElement* element = GetMediaElement()) {
element->NotifyMediaTrackRemoved(aTrack);
}
}
void MediaTrackList::RemoveTracks() {
while (!mTracks.IsEmpty()) {
RefPtr<MediaTrack> track = mTracks.LastElement();
RemoveTrack(track);
}
}
already_AddRefed<AudioTrack> MediaTrackList::CreateAudioTrack(
nsIGlobalObject* aOwnerGlobal, const nsAString& aId, const nsAString& aKind,
const nsAString& aLabel, const nsAString& aLanguage, bool aEnabled,
AudioStreamTrack* aAudioTrack) {
RefPtr<AudioTrack> track = new AudioTrack(aOwnerGlobal, aId, aKind, aLabel,
aLanguage, aEnabled, aAudioTrack);
return track.forget();
}
already_AddRefed<VideoTrack> MediaTrackList::CreateVideoTrack(
nsIGlobalObject* aOwnerGlobal, const nsAString& aId, const nsAString& aKind,
const nsAString& aLabel, const nsAString& aLanguage,
VideoStreamTrack* aVideoTrack) {
RefPtr<VideoTrack> track =
new VideoTrack(aOwnerGlobal, 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, u"change"_ns, CanBubble::eNo);
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.forget());
asyncDispatcher->PostDOMEvent();
}
} // namespace mozilla::dom
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