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The Tor Browser
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SourceBufferList.h (3134B)

      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
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_SourceBufferList_h_
      8 #define mozilla_dom_SourceBufferList_h_
      9 
     10 #include "SourceBuffer.h"
     11 #include "js/RootingAPI.h"
     12 #include "mozilla/DOMEventTargetHelper.h"
     13 #include "nsCycleCollectionNoteChild.h"
     14 #include "nsCycleCollectionParticipant.h"
     15 #include "nsISupports.h"
     16 #include "nsTArray.h"
     17 
     18 struct JSContext;
     19 class JSObject;
     20 
     21 namespace mozilla {
     22 
     23 template <typename T>
     24 class AsyncEventRunner;
     25 
     26 namespace dom {
     27 
     28 class MediaSource;
     29 
     30 class SourceBufferList final : public DOMEventTargetHelper {
     31 public:
     32  /** WebIDL Methods. */
     33  SourceBuffer* IndexedGetter(uint32_t aIndex, bool& aFound);
     34 
     35  uint32_t Length();
     36 
     37  IMPL_EVENT_HANDLER(addsourcebuffer);
     38  IMPL_EVENT_HANDLER(removesourcebuffer);
     39 
     40  /** End WebIDL methods. */
     41 
     42  NS_DECL_ISUPPORTS_INHERITED
     43  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SourceBufferList,
     44                                           DOMEventTargetHelper)
     45 
     46  explicit SourceBufferList(MediaSource* aMediaSource);
     47 
     48  MediaSource* GetParentObject() const;
     49 
     50  JSObject* WrapObject(JSContext* aCx,
     51                       JS::Handle<JSObject*> aGivenProto) override;
     52 
     53  // Append a SourceBuffer and fire "addsourcebuffer" at the list.
     54  void Append(SourceBuffer* aSourceBuffer);
     55 
     56  // Remove a SourceBuffer and fire "removesourcebuffer" at the list.
     57  void Remove(SourceBuffer* aSourceBuffer);
     58 
     59  // Returns true if aSourceBuffer is present in the list.
     60  bool Contains(SourceBuffer* aSourceBuffer);
     61 
     62  // Remove all SourceBuffers and fire a single "removesourcebuffer" at the
     63  // list.
     64  void Clear();
     65 
     66  // True if list has zero entries.
     67  bool IsEmpty();
     68 
     69  // Returns true if updating is true on any SourceBuffers in the list.
     70  bool AnyUpdating();
     71 
     72  // Runs the range removal steps from the MSE specification on each
     73  // SourceBuffer.
     74  void RangeRemoval(double aStart, double aEnd);
     75 
     76  // Mark all SourceBuffers input buffers as ended.
     77  void SetEnded(const Optional<MediaSourceEndOfStreamError>& aError);
     78 
     79  // Returns the highest end time of any of the Sourcebuffers.
     80  media::TimeUnit GetHighestBufferedEndTime();
     81 
     82  // Append a SourceBuffer to the list. No event is fired.
     83  void AppendSimple(SourceBuffer* aSourceBuffer);
     84 
     85  // Remove all SourceBuffers from mSourceBuffers.
     86  //  No event is fired and no action is performed on the sourcebuffers.
     87  void ClearSimple();
     88 
     89  media::TimeUnit HighestStartTime();
     90  media::TimeUnit HighestEndTime();
     91 
     92 private:
     93  ~SourceBufferList();
     94 
     95  friend class AsyncEventRunner<SourceBufferList>;
     96  void DispatchSimpleEvent(const char* aName);
     97  void QueueAsyncSimpleEvent(const char* aName);
     98 
     99  RefPtr<MediaSource> mMediaSource;
    100  nsTArray<RefPtr<SourceBuffer> > mSourceBuffers;
    101  const RefPtr<AbstractThread> mAbstractMainThread;
    102 };
    103 
    104 }  // namespace dom
    105 
    106 }  // namespace mozilla
    107 
    108 #endif /* mozilla_dom_SourceBufferList_h_ */