dom/media/eme/MediaEncryptedEvent.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "MediaEncryptedEvent.h"
   8 #include "mozilla/dom/MediaEncryptedEventBinding.h"
   9 #include "nsContentUtils.h"
  10 #include "js/ArrayBuffer.h"
  11 #include "jsfriendapi.h"
  12 #include "nsINode.h"
  13 #include "mozilla/dom/MediaKeys.h"
  14 #include "mozilla/HoldDropJSObjects.h"
  15
  16 namespace mozilla::dom {
  17
  18 NS_IMPL_CYCLE_COLLECTION_CLASS(MediaEncryptedEvent)
  19
  20 NS_IMPL_ADDREF_INHERITED(MediaEncryptedEvent, Event)
  21 NS_IMPL_RELEASE_INHERITED(MediaEncryptedEvent, Event)
  22
  23 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(MediaEncryptedEvent, Event)
  24 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
  25
  26 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(MediaEncryptedEvent, Event)
  27   NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mInitData)
  28 NS_IMPL_CYCLE_COLLECTION_TRACE_END
  29
  30 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(MediaEncryptedEvent, Event)
  31   mozilla::DropJSObjects(tmp);
  32 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
  33
  34 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaEncryptedEvent)
  35 NS_INTERFACE_MAP_END_INHERITING(Event)
  36
  37 MediaEncryptedEvent::MediaEncryptedEvent(EventTarget* aOwner)
  38     : Event(aOwner, nullptr, nullptr) {
  39   mozilla::HoldJSObjects(this);
  40 }
  41
  42 MediaEncryptedEvent::~MediaEncryptedEvent() { mozilla::DropJSObjects(this); }
  43
  44 JSObject* MediaEncryptedEvent::WrapObjectInternal(
  45     JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  46   return MediaEncryptedEvent_Binding::Wrap(aCx, this, aGivenProto);
  47 }
  48
  49 already_AddRefed<MediaEncryptedEvent> MediaEncryptedEvent::Constructor(
  50     EventTarget* aOwner) {
  51   RefPtr<MediaEncryptedEvent> e = new MediaEncryptedEvent(aOwner);
  52   e->InitEvent(u"encrypted"_ns, CanBubble::eNo, Cancelable::eNo);
  53   e->SetTrusted(true);
  54   return e.forget();
  55 }
  56
  57 already_AddRefed<MediaEncryptedEvent> MediaEncryptedEvent::Constructor(
  58     EventTarget* aOwner, const nsAString& aInitDataType,
  59     const nsTArray<uint8_t>& aInitData) {
  60   RefPtr<MediaEncryptedEvent> e = new MediaEncryptedEvent(aOwner);
  61   e->InitEvent(u"encrypted"_ns, CanBubble::eNo, Cancelable::eNo);
  62   e->mInitDataType = aInitDataType;
  63   e->mRawInitData = aInitData.Clone();
  64   e->SetTrusted(true);
  65   return e.forget();
  66 }
  67
  68 already_AddRefed<MediaEncryptedEvent> MediaEncryptedEvent::Constructor(
  69     const GlobalObject& aGlobal, const nsAString& aType,
  70     const MediaKeyNeededEventInit& aEventInitDict, ErrorResult& aRv) {
  71   nsCOMPtr<EventTarget> owner = do_QueryInterface(aGlobal.GetAsSupports());
  72   RefPtr<MediaEncryptedEvent> e = new MediaEncryptedEvent(owner);
  73   bool trusted = e->Init(owner);
  74   e->InitEvent(aType, aEventInitDict.mBubbles, aEventInitDict.mCancelable);
  75   e->mInitDataType = aEventInitDict.mInitDataType;
  76   if (!aEventInitDict.mInitData.IsNull()) {
  77     JS::Rooted<JSObject*> buffer(aGlobal.Context(),
  78                                  aEventInitDict.mInitData.Value().Obj());
  79     e->mInitData = JS::CopyArrayBuffer(aGlobal.Context(), buffer);
  80     if (!e->mInitData) {
  81       aRv.NoteJSContextException(aGlobal.Context());
  82       return nullptr;
  83     }
  84   }
  85   e->SetTrusted(trusted);
  86   return e.forget();
  87 }
  88
  89 void MediaEncryptedEvent::GetInitDataType(nsString& aRetVal) const {
  90   aRetVal = mInitDataType;
  91 }
  92
  93 void MediaEncryptedEvent::GetInitData(JSContext* cx,
  94                                       JS::MutableHandle<JSObject*> aData,
  95                                       ErrorResult& aRv) {
  96   if (mRawInitData.Length()) {
  97     mInitData = ArrayBuffer::Create(cx, this, mRawInitData.Length(),
  98                                     mRawInitData.Elements());
  99     if (!mInitData) {
 100       aRv.NoteJSContextException(cx);
 101       return;
 102     }
 103     mRawInitData.Clear();
 104   }
 105   aData.set(mInitData);
 106 }
 107
 108 }  // namespace mozilla::dom