The Tor Browser: content/media/mediasource/MediaSource.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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/. */

     7 #ifndef mozilla_dom_MediaSource_h_

     8 #define mozilla_dom_MediaSource_h_

    10 #include "MediaSourceDecoder.h"

    11 #include "js/RootingAPI.h"

    12 #include "mozilla/Assertions.h"

    13 #include "mozilla/Attributes.h"

    14 #include "mozilla/DOMEventTargetHelper.h"

    15 #include "mozilla/dom/MediaSourceBinding.h"

    16 #include "nsAutoPtr.h"

    17 #include "nsCOMPtr.h"

    18 #include "nsCycleCollectionNoteChild.h"

    19 #include "nsCycleCollectionParticipant.h"

    20 #include "nsID.h"

    21 #include "nsISupports.h"

    22 #include "nscore.h"

    24 struct JSContext;

    25 class JSObject;

    26 class nsPIDOMWindow;

    28 namespace mozilla {

    30 class ErrorResult;

    31 template <typename T> class AsyncEventRunner;

    33 namespace dom {

    35 class GlobalObject;

    36 class SourceBuffer;

    37 class SourceBufferList;

    38 template <typename T> class Optional;

    40 #define MOZILLA_DOM_MEDIASOURCE_IMPLEMENTATION_IID \

    41   { 0x3839d699, 0x22c5, 0x439f, \

    42   { 0x94, 0xca, 0x0e, 0x0b, 0x26, 0xf9, 0xca, 0xbf } }

    44 class MediaSource MOZ_FINAL : public DOMEventTargetHelper

    45 {

    46 public:

    47   /** WebIDL Methods. */

    48   static already_AddRefed<MediaSource>

    49   Constructor(const GlobalObject& aGlobal,

    50               ErrorResult& aRv);

    52   SourceBufferList* SourceBuffers();

    53   SourceBufferList* ActiveSourceBuffers();

    54   MediaSourceReadyState ReadyState();

    56   double Duration();

    57   void SetDuration(double aDuration, ErrorResult& aRv);

    59   already_AddRefed<SourceBuffer> AddSourceBuffer(const nsAString& aType, ErrorResult& aRv);

    60   void RemoveSourceBuffer(SourceBuffer& aSourceBuffer, ErrorResult& aRv);

    62   void EndOfStream(const Optional<MediaSourceEndOfStreamError>& aError, ErrorResult& aRv);

    63   static bool IsTypeSupported(const GlobalObject&, const nsAString& aType);

    64   /** End WebIDL Methods. */

    66   NS_DECL_ISUPPORTS_INHERITED

    67   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MediaSource, DOMEventTargetHelper)

    68   NS_DECLARE_STATIC_IID_ACCESSOR(MOZILLA_DOM_MEDIASOURCE_IMPLEMENTATION_IID)

    70   nsPIDOMWindow* GetParentObject() const;

    72   JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;

    74   // Attach this MediaSource to Decoder aDecoder.  Returns false if already attached.

    75   bool Attach(MediaSourceDecoder* aDecoder);

    76   void Detach();

    78   // Set mReadyState to aState and fire the required events at the MediaSource.

    79   void SetReadyState(MediaSourceReadyState aState);

    81  // Used by SourceBuffer to call CreateSubDecoder.

    82   MediaSourceDecoder* GetDecoder()

    83   {

    84     return mDecoder;

    85   }

    87   // Called by SourceBuffers to notify this MediaSource that data has

    88   // been evicted from the buffered data. The start and end times

    89   // that were evicted are provided.

    90   void NotifyEvicted(double aStart, double aEnd);

    92 private:

    93   explicit MediaSource(nsPIDOMWindow* aWindow);

    95   friend class AsyncEventRunner<MediaSource>;

    96   void DispatchSimpleEvent(const char* aName);

    97   void QueueAsyncSimpleEvent(const char* aName);

    99   void DurationChange(double aNewDuration, ErrorResult& aRv);

   101   double mDuration;

   103   nsRefPtr<SourceBufferList> mSourceBuffers;

   104   nsRefPtr<SourceBufferList> mActiveSourceBuffers;

   106   nsRefPtr<MediaSourceDecoder> mDecoder;

   108   MediaSourceReadyState mReadyState;

   109 };

   111 NS_DEFINE_STATIC_IID_ACCESSOR(MediaSource, MOZILLA_DOM_MEDIASOURCE_IMPLEMENTATION_IID)

   113 } // namespace dom

   115 } // namespace mozilla

   116 #endif /* mozilla_dom_MediaSource_h_ */

The Tor Browser / file revision

content/media/mediasource/MediaSource.h@97036ab72558

content/media/mediasource/MediaSource.h