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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/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
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