gecko-dev/dom/html/TextTrackManager.h

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C
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_TextTrackManager_h
#define mozilla_dom_TextTrackManager_h
#include "mozilla/dom/TextTrack.h"
#include "mozilla/dom/TextTrackList.h"
#include "mozilla/dom/TextTrackCueList.h"
#include "mozilla/StaticPtr.h"
#include "nsContentUtils.h"
class nsIWebVTTParserWrapper;
namespace mozilla {
namespace dom {
class HTMLMediaElement;
class CompareTextTracks {
private:
HTMLMediaElement* mMediaElement;
int32_t TrackChildPosition(TextTrack* aTrack) const;
public:
explicit CompareTextTracks(HTMLMediaElement* aMediaElement);
bool Equals(TextTrack* aOne, TextTrack* aTwo) const;
bool LessThan(TextTrack* aOne, TextTrack* aTwo) const;
};
class TextTrack;
class TextTrackCue;
class TextTrackManager final : public nsIDOMEventListener
{
~TextTrackManager();
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS(TextTrackManager)
NS_DECL_NSIDOMEVENTLISTENER
explicit TextTrackManager(HTMLMediaElement* aMediaElement);
TextTrackList* GetTextTracks() const;
already_AddRefed<TextTrack> AddTextTrack(TextTrackKind aKind,
const nsAString& aLabel,
const nsAString& aLanguage,
TextTrackMode aMode,
TextTrackReadyState aReadyState,
TextTrackSource aTextTrackSource);
void AddTextTrack(TextTrack* aTextTrack);
void RemoveTextTrack(TextTrack* aTextTrack, bool aPendingListOnly);
void DidSeek();
void NotifyCueAdded(TextTrackCue& aCue);
void AddCues(TextTrack* aTextTrack);
void NotifyCueRemoved(TextTrackCue& aCue);
/**
* Overview of WebVTT cuetext and anonymous content setup.
*
* WebVTT nodes are the parsed version of WebVTT cuetext. WebVTT cuetext is
* the portion of a WebVTT cue that specifies what the caption will actually
* show up as on screen.
*
* WebVTT cuetext can contain markup that loosely relates to HTML markup. It
* can contain tags like <b>, <u>, <i>, <c>, <v>, <ruby>, <rt>, <lang>,
* including timestamp tags.
*
* When the caption is ready to be displayed the WebVTT nodes are converted
* over to anonymous DOM content. <i>, <u>, <b>, <ruby>, and <rt> all become
* HTMLElements of their corresponding HTML markup tags. <c> and <v> are
* converted to <span> tags. Timestamp tags are converted to XML processing
* instructions. Additionally, all cuetext tags support specifying of classes.
* This takes the form of <foo.class.subclass>. These classes are then parsed
* and set as the anonymous content's class attribute.
*
* Rules on constructing DOM objects from WebVTT nodes can be found here
* http://dev.w3.org/html5/webvtt/#webvtt-cue-text-dom-construction-rules.
* Current rules are taken from revision on April 15, 2013.
*/
void PopulatePendingList();
void AddListeners();
// The HTMLMediaElement that this TextTrackManager manages the TextTracks of.
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<HTMLMediaElement> mMediaElement;
void DispatchTimeMarchesOn();
void TimeMarchesOn();
void DispatchUpdateCueDisplay();
void NotifyShutdown()
{
mShutdown = true;
}
void NotifyCueUpdated(TextTrackCue *aCue);
void NotifyReset();
bool IsLoaded();
private:
/**
* Converts the TextTrackCue's cuetext into a tree of DOM objects
* and attaches it to a div on its owning TrackElement's
* MediaElement's caption overlay.
*/
void UpdateCueDisplay();
// List of the TextTrackManager's owning HTMLMediaElement's TextTracks.
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<TextTrackList> mTextTracks;
// List of text track objects awaiting loading.
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<TextTrackList> mPendingTextTracks;
// List of newly introduced Text Track cues.
// Contain all cues for a MediaElement. Not sorted.
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<TextTrackCueList> mNewCues;
// The active cues for the last TimeMarchesOn iteration.
RefPtr<TextTrackCueList> mLastActiveCues;
// True if the media player playback changed due to seeking prior to and
// during running the "Time Marches On" algorithm.
bool mHasSeeked;
// Playback position at the time of last "Time Marches On" call
double mLastTimeMarchesOnCalled;
bool mTimeMarchesOnDispatched;
bool mUpdateCueDisplayDispatched;
static StaticRefPtr<nsIWebVTTParserWrapper> sParserWrapper;
bool performedTrackSelection;
// Runs the algorithm for performing automatic track selection.
void HonorUserPreferencesForTrackSelection();
// Performs track selection for a single TextTrackKind.
void PerformTrackSelection(TextTrackKind aTextTrackKind);
//Performs track selection for a set of TextTrackKinds, for example,
// 'subtitles' and 'captions' should be selected together.
void PerformTrackSelection(TextTrackKind aTextTrackKinds[], uint32_t size);
void GetTextTracksOfKinds(TextTrackKind aTextTrackKinds[], uint32_t size,
nsTArray<TextTrack*>& aTextTracks);
void GetTextTracksOfKind(TextTrackKind aTextTrackKind,
nsTArray<TextTrack*>& aTextTracks);
bool TrackIsDefault(TextTrack* aTextTrack);
void ReportTelemetryForTrack(TextTrack* aTextTrack) const;
void ReportTelemetryForCue();
bool IsShutdown() const;
// If there is at least one cue has been added to the cue list once, we would
// report the usage of cue to Telemetry.
bool mCueTelemetryReported;
class ShutdownObserverProxy final : public nsIObserver
{
NS_DECL_ISUPPORTS
public:
explicit ShutdownObserverProxy(TextTrackManager* aManager)
: mManager(aManager)
{
nsContentUtils::RegisterShutdownObserver(this);
}
NS_IMETHODIMP Observe(nsISupports *aSubject, const char *aTopic, const char16_t *aData) override
{
MOZ_ASSERT(NS_IsMainThread());
if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
nsContentUtils::UnregisterShutdownObserver(this);
mManager->NotifyShutdown();
}
return NS_OK;
}
private:
~ShutdownObserverProxy() {};
TextTrackManager* mManager;
};
RefPtr<ShutdownObserverProxy> mShutdownProxy;
bool mShutdown;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_TextTrackManager_h