зеркало из https://github.com/mozilla/gecko-dev.git
138 строки
4.5 KiB
C++
138 строки
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 et tw=78: */
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "MediaTrack.h"
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#include "MediaTrackList.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/dom/HTMLMediaElement.h"
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#include "mozilla/dom/AudioTrack.h"
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#include "mozilla/dom/VideoStreamTrack.h"
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#include "mozilla/dom/VideoTrack.h"
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#include "mozilla/dom/TrackEvent.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace dom {
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MediaTrackList::MediaTrackList(nsIGlobalObject* aOwnerObject,
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HTMLMediaElement* aMediaElement)
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: DOMEventTargetHelper(aOwnerObject), mMediaElement(aMediaElement) {}
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MediaTrackList::~MediaTrackList() {}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(MediaTrackList, DOMEventTargetHelper,
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mTracks, mMediaElement)
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NS_IMPL_ADDREF_INHERITED(MediaTrackList, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(MediaTrackList, DOMEventTargetHelper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaTrackList)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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MediaTrack* MediaTrackList::operator[](uint32_t aIndex) {
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return mTracks.ElementAt(aIndex);
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}
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MediaTrack* MediaTrackList::IndexedGetter(uint32_t aIndex, bool& aFound) {
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aFound = aIndex < mTracks.Length();
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if (!aFound) {
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return nullptr;
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}
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return mTracks[aIndex];
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}
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MediaTrack* MediaTrackList::GetTrackById(const nsAString& aId) {
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for (uint32_t i = 0; i < mTracks.Length(); ++i) {
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if (aId.Equals(mTracks[i]->GetId())) {
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return mTracks[i];
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}
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}
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return nullptr;
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}
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void MediaTrackList::AddTrack(MediaTrack* aTrack) {
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MOZ_ASSERT(aTrack->GetOwnerGlobal() == GetOwnerGlobal(),
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"Where is this track from?");
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mTracks.AppendElement(aTrack);
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aTrack->SetTrackList(this);
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CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("addtrack"));
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if ((!aTrack->AsAudioTrack() || !aTrack->AsAudioTrack()->Enabled()) &&
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(!aTrack->AsVideoTrack() || !aTrack->AsVideoTrack()->Selected())) {
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// Track not enabled, no need to notify media element.
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return;
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}
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if (HTMLMediaElement* element = GetMediaElement()) {
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element->NotifyMediaTrackEnabled(aTrack);
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}
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}
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void MediaTrackList::RemoveTrack(const RefPtr<MediaTrack>& aTrack) {
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mTracks.RemoveElement(aTrack);
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aTrack->SetEnabledInternal(false, MediaTrack::FIRE_NO_EVENTS);
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aTrack->SetTrackList(nullptr);
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CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("removetrack"));
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}
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void MediaTrackList::RemoveTracks() {
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while (!mTracks.IsEmpty()) {
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RefPtr<MediaTrack> track = mTracks.LastElement();
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RemoveTrack(track);
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}
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}
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already_AddRefed<AudioTrack> MediaTrackList::CreateAudioTrack(
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nsIGlobalObject* aOwnerGlobal, const nsAString& aId, const nsAString& aKind,
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const nsAString& aLabel, const nsAString& aLanguage, bool aEnabled) {
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RefPtr<AudioTrack> track =
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new AudioTrack(aOwnerGlobal, aId, aKind, aLabel, aLanguage, aEnabled);
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return track.forget();
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}
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already_AddRefed<VideoTrack> MediaTrackList::CreateVideoTrack(
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nsIGlobalObject* aOwnerGlobal, const nsAString& aId, const nsAString& aKind,
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const nsAString& aLabel, const nsAString& aLanguage,
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VideoStreamTrack* aVideoTrack) {
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RefPtr<VideoTrack> track =
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new VideoTrack(aOwnerGlobal, aId, aKind, aLabel, aLanguage, aVideoTrack);
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return track.forget();
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}
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void MediaTrackList::EmptyTracks() {
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for (uint32_t i = 0; i < mTracks.Length(); ++i) {
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mTracks[i]->SetEnabledInternal(false, MediaTrack::FIRE_NO_EVENTS);
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mTracks[i]->SetTrackList(nullptr);
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}
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mTracks.Clear();
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}
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void MediaTrackList::CreateAndDispatchChangeEvent() {
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RefPtr<AsyncEventDispatcher> asyncDispatcher = new AsyncEventDispatcher(
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this, NS_LITERAL_STRING("change"), CanBubble::eNo);
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asyncDispatcher->PostDOMEvent();
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}
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void MediaTrackList::CreateAndDispatchTrackEventRunner(
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MediaTrack* aTrack, const nsAString& aEventName) {
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TrackEventInit eventInit;
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if (aTrack->AsAudioTrack()) {
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eventInit.mTrack.SetValue().SetAsAudioTrack() = aTrack->AsAudioTrack();
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} else if (aTrack->AsVideoTrack()) {
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eventInit.mTrack.SetValue().SetAsVideoTrack() = aTrack->AsVideoTrack();
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}
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RefPtr<TrackEvent> event =
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TrackEvent::Constructor(this, aEventName, eventInit);
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RefPtr<AsyncEventDispatcher> asyncDispatcher =
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new AsyncEventDispatcher(this, event);
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asyncDispatcher->PostDOMEvent();
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}
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} // namespace dom
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} // namespace mozilla
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