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https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
ee5e1bf2da
Bug 1112424 adds an about:media page that gives debug information about HTMLMediaElements and in particular MediaSource objects that are live inside tabs. This patch adds methods to the MediaSource and HTMLMediaElement object to return the debug data as a string that gets displayed directly in the about:media page, inside a <pre> element.
164 lines
4.9 KiB
C++
164 lines
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_dom_MediaSource_h_
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#define mozilla_dom_MediaSource_h_
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#include "MediaSourceDecoder.h"
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#include "js/RootingAPI.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/dom/MediaSourceBinding.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionNoteChild.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsID.h"
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#include "nsISupports.h"
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#include "nscore.h"
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struct JSContext;
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class JSObject;
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class nsPIDOMWindow;
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namespace mozilla {
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class ErrorResult;
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template <typename T> class AsyncEventRunner;
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enum MSRangeRemovalAction: uint8_t {
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RUN = 0,
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SKIP = 1
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};
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namespace dom {
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class GlobalObject;
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class SourceBuffer;
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class SourceBufferList;
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template <typename T> class Optional;
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#define MOZILLA_DOM_MEDIASOURCE_IMPLEMENTATION_IID \
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{ 0x3839d699, 0x22c5, 0x439f, \
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{ 0x94, 0xca, 0x0e, 0x0b, 0x26, 0xf9, 0xca, 0xbf } }
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class MediaSource MOZ_FINAL : public DOMEventTargetHelper
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{
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public:
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/** WebIDL Methods. */
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static already_AddRefed<MediaSource>
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Constructor(const GlobalObject& aGlobal,
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ErrorResult& aRv);
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SourceBufferList* SourceBuffers();
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SourceBufferList* ActiveSourceBuffers();
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MediaSourceReadyState ReadyState();
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double Duration();
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void SetDuration(double aDuration, ErrorResult& aRv);
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already_AddRefed<SourceBuffer> AddSourceBuffer(const nsAString& aType, ErrorResult& aRv);
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void RemoveSourceBuffer(SourceBuffer& aSourceBuffer, ErrorResult& aRv);
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void EndOfStream(const Optional<MediaSourceEndOfStreamError>& aError, ErrorResult& aRv);
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static bool IsTypeSupported(const GlobalObject&, const nsAString& aType);
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static bool Enabled(JSContext* cx, JSObject* aGlobal);
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/** End WebIDL Methods. */
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MediaSource, DOMEventTargetHelper)
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NS_DECLARE_STATIC_IID_ACCESSOR(MOZILLA_DOM_MEDIASOURCE_IMPLEMENTATION_IID)
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nsPIDOMWindow* GetParentObject() const;
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JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
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// Attach this MediaSource to Decoder aDecoder. Returns false if already attached.
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bool Attach(MediaSourceDecoder* aDecoder);
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void Detach();
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// Set mReadyState to aState and fire the required events at the MediaSource.
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void SetReadyState(MediaSourceReadyState aState);
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// Used by SourceBuffer to call CreateSubDecoder.
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MediaSourceDecoder* GetDecoder()
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{
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return mDecoder;
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}
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nsIPrincipal* GetPrincipal()
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{
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return mPrincipal;
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}
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// Called by SourceBuffers to notify this MediaSource that data has
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// been evicted from the buffered data. The start and end times
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// that were evicted are provided.
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void NotifyEvicted(double aStart, double aEnd);
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// Queue InitializationEvent to run on the main thread. Called when a
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// SourceBuffer has an initialization segment appended, but only
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// dispatched the first time (using mFirstSourceBufferInitialized).
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// Demarcates the point in time at which only currently registered
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// TrackBuffers are treated as essential by the MediaSourceReader for
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// initialization.
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void QueueInitializationEvent();
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#if defined(DEBUG)
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// Dump the contents of each SourceBuffer to a series of files under aPath.
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// aPath must exist. Debug only, invoke from your favourite debugger.
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void Dump(const char* aPath);
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#endif
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// Returns a string describing the state of the MediaSource internal
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// buffered data. Used for debugging purposes.
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void GetMozDebugReaderData(nsAString& aString);
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private:
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// MediaSourceDecoder uses DurationChange to set the duration
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// without hitting the checks in SetDuration.
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friend class mozilla::MediaSourceDecoder;
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// SourceBuffer uses SetDuration
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friend class mozilla::dom::SourceBuffer;
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~MediaSource();
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explicit MediaSource(nsPIDOMWindow* aWindow);
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friend class AsyncEventRunner<MediaSource>;
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void DispatchSimpleEvent(const char* aName);
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void QueueAsyncSimpleEvent(const char* aName);
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void DurationChange(double aOldDuration, double aNewDuration);
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void InitializationEvent();
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// SetDuration with no checks.
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void SetDuration(double aDuration, MSRangeRemovalAction aAction);
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nsRefPtr<SourceBufferList> mSourceBuffers;
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nsRefPtr<SourceBufferList> mActiveSourceBuffers;
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nsRefPtr<MediaSourceDecoder> mDecoder;
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// Ensures the media element remains alive to dispatch progress and
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// durationchanged events.
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nsRefPtr<HTMLMediaElement> mMediaElement;
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nsRefPtr<nsIPrincipal> mPrincipal;
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MediaSourceReadyState mReadyState;
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bool mFirstSourceBufferInitialized;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(MediaSource, MOZILLA_DOM_MEDIASOURCE_IMPLEMENTATION_IID)
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_MediaSource_h_ */
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