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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/media/mediasource/MediaSource.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/mediasource/MediaSource.cpp')
-rw-r--r--dom/media/mediasource/MediaSource.cpp591
1 files changed, 591 insertions, 0 deletions
diff --git a/dom/media/mediasource/MediaSource.cpp b/dom/media/mediasource/MediaSource.cpp
new file mode 100644
index 000000000..af541bbbb
--- /dev/null
+++ b/dom/media/mediasource/MediaSource.cpp
@@ -0,0 +1,591 @@
+/* -*- 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/. */
+
+#include "MediaSource.h"
+
+#include "AsyncEventRunner.h"
+#include "DecoderTraits.h"
+#include "Benchmark.h"
+#include "DecoderDoctorDiagnostics.h"
+#include "MediaContentType.h"
+#include "MediaResult.h"
+#include "MediaSourceUtils.h"
+#include "SourceBuffer.h"
+#include "SourceBufferList.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/FloatingPoint.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/HTMLMediaElement.h"
+#include "mozilla/mozalloc.h"
+#include "nsDebug.h"
+#include "nsError.h"
+#include "nsIRunnable.h"
+#include "nsIScriptObjectPrincipal.h"
+#include "nsPIDOMWindow.h"
+#include "nsString.h"
+#include "nsThreadUtils.h"
+#include "mozilla/Logging.h"
+#include "nsServiceManagerUtils.h"
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/Sprintf.h"
+
+#ifdef MOZ_WIDGET_ANDROID
+#include "AndroidBridge.h"
+#endif
+
+struct JSContext;
+class JSObject;
+
+mozilla::LogModule* GetMediaSourceLog()
+{
+ static mozilla::LazyLogModule sLogModule("MediaSource");
+ return sLogModule;
+}
+
+mozilla::LogModule* GetMediaSourceAPILog()
+{
+ static mozilla::LazyLogModule sLogModule("MediaSource");
+ return sLogModule;
+}
+
+#define MSE_DEBUG(arg, ...) MOZ_LOG(GetMediaSourceLog(), mozilla::LogLevel::Debug, ("MediaSource(%p)::%s: " arg, this, __func__, ##__VA_ARGS__))
+#define MSE_API(arg, ...) MOZ_LOG(GetMediaSourceAPILog(), mozilla::LogLevel::Debug, ("MediaSource(%p)::%s: " arg, this, __func__, ##__VA_ARGS__))
+
+// Arbitrary limit.
+static const unsigned int MAX_SOURCE_BUFFERS = 16;
+
+namespace mozilla {
+
+// Returns true if we should enable MSE webm regardless of preferences.
+// 1. If MP4/H264 isn't supported:
+// * Windows XP
+// * Windows Vista and Server 2008 without the optional "Platform Update Supplement"
+// * N/KN editions (Europe and Korea) of Windows 7/8/8.1/10 without the
+// optional "Windows Media Feature Pack"
+// 2. If H264 hardware acceleration is not available.
+// 3. The CPU is considered to be fast enough
+static bool
+IsWebMForced(DecoderDoctorDiagnostics* aDiagnostics)
+{
+ bool mp4supported =
+ DecoderTraits::IsMP4TypeAndEnabled(NS_LITERAL_CSTRING("video/mp4"),
+ aDiagnostics);
+ bool hwsupported = gfx::gfxVars::CanUseHardwareVideoDecoding();
+#ifdef MOZ_WIDGET_ANDROID
+ return !mp4supported || !hwsupported || VP9Benchmark::IsVP9DecodeFast() ||
+ java::HardwareCodecCapabilityUtils::HasHWVP9();
+#else
+ return !mp4supported || !hwsupported || VP9Benchmark::IsVP9DecodeFast();
+#endif
+}
+
+namespace dom {
+
+/* static */
+nsresult
+MediaSource::IsTypeSupported(const nsAString& aType, DecoderDoctorDiagnostics* aDiagnostics)
+{
+ if (aType.IsEmpty()) {
+ return NS_ERROR_DOM_TYPE_ERR;
+ }
+
+ MediaContentType contentType{aType};
+ if (!contentType.IsValid()) {
+ return NS_ERROR_DOM_TYPE_ERR;
+ }
+
+ if (DecoderTraits::CanHandleContentType(contentType, aDiagnostics)
+ == CANPLAY_NO) {
+ return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+ }
+
+ // Now we know that this media type could be played.
+ // MediaSource imposes extra restrictions, and some prefs.
+ const nsACString& mimeType = contentType.GetMIMEType();
+ if (mimeType.EqualsASCII("video/mp4") || mimeType.EqualsASCII("audio/mp4")) {
+ if (!Preferences::GetBool("media.mediasource.mp4.enabled", false)) {
+ return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+ }
+ return NS_OK;
+ }
+ if (mimeType.EqualsASCII("video/webm")) {
+ if (!(Preferences::GetBool("media.mediasource.webm.enabled", false) ||
+ IsWebMForced(aDiagnostics))) {
+ return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+ }
+ return NS_OK;
+ }
+ if (mimeType.EqualsASCII("audio/webm")) {
+ if (!(Preferences::GetBool("media.mediasource.webm.enabled", false) ||
+ Preferences::GetBool("media.mediasource.webm.audio.enabled", true))) {
+ return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+ }
+ return NS_OK;
+ }
+
+ return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+}
+
+/* static */ already_AddRefed<MediaSource>
+MediaSource::Constructor(const GlobalObject& aGlobal,
+ ErrorResult& aRv)
+{
+ nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal.GetAsSupports());
+ if (!window) {
+ aRv.Throw(NS_ERROR_UNEXPECTED);
+ return nullptr;
+ }
+
+ RefPtr<MediaSource> mediaSource = new MediaSource(window);
+ return mediaSource.forget();
+}
+
+MediaSource::~MediaSource()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_API("");
+ if (mDecoder) {
+ mDecoder->DetachMediaSource();
+ }
+}
+
+SourceBufferList*
+MediaSource::SourceBuffers()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT_IF(mReadyState == MediaSourceReadyState::Closed, mSourceBuffers->IsEmpty());
+ return mSourceBuffers;
+}
+
+SourceBufferList*
+MediaSource::ActiveSourceBuffers()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT_IF(mReadyState == MediaSourceReadyState::Closed, mActiveSourceBuffers->IsEmpty());
+ return mActiveSourceBuffers;
+}
+
+MediaSourceReadyState
+MediaSource::ReadyState()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ return mReadyState;
+}
+
+double
+MediaSource::Duration()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ if (mReadyState == MediaSourceReadyState::Closed) {
+ return UnspecifiedNaN<double>();
+ }
+ MOZ_ASSERT(mDecoder);
+ return mDecoder->GetDuration();
+}
+
+void
+MediaSource::SetDuration(double aDuration, ErrorResult& aRv)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_API("SetDuration(aDuration=%f, ErrorResult)", aDuration);
+ if (aDuration < 0 || IsNaN(aDuration)) {
+ aRv.Throw(NS_ERROR_DOM_TYPE_ERR);
+ return;
+ }
+ if (mReadyState != MediaSourceReadyState::Open ||
+ mSourceBuffers->AnyUpdating()) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+ DurationChange(aDuration, aRv);
+}
+
+void
+MediaSource::SetDuration(double aDuration)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_API("SetDuration(aDuration=%f)", aDuration);
+ mDecoder->SetMediaSourceDuration(aDuration);
+}
+
+already_AddRefed<SourceBuffer>
+MediaSource::AddSourceBuffer(const nsAString& aType, ErrorResult& aRv)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ DecoderDoctorDiagnostics diagnostics;
+ nsresult rv = IsTypeSupported(aType, &diagnostics);
+ diagnostics.StoreFormatDiagnostics(GetOwner()
+ ? GetOwner()->GetExtantDoc()
+ : nullptr,
+ aType, NS_SUCCEEDED(rv), __func__);
+ MSE_API("AddSourceBuffer(aType=%s)%s",
+ NS_ConvertUTF16toUTF8(aType).get(),
+ rv == NS_OK ? "" : " [not supported]");
+ if (NS_FAILED(rv)) {
+ aRv.Throw(rv);
+ return nullptr;
+ }
+ if (mSourceBuffers->Length() >= MAX_SOURCE_BUFFERS) {
+ aRv.Throw(NS_ERROR_DOM_QUOTA_EXCEEDED_ERR);
+ return nullptr;
+ }
+ if (mReadyState != MediaSourceReadyState::Open) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return nullptr;
+ }
+ MediaContentType contentType{aType};
+ if (!contentType.IsValid()) {
+ aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
+ return nullptr;
+ }
+ const nsACString& mimeType = contentType.GetMIMEType();
+ RefPtr<SourceBuffer> sourceBuffer = new SourceBuffer(this, mimeType);
+ if (!sourceBuffer) {
+ aRv.Throw(NS_ERROR_FAILURE); // XXX need a better error here
+ return nullptr;
+ }
+ mSourceBuffers->Append(sourceBuffer);
+ MSE_DEBUG("sourceBuffer=%p", sourceBuffer.get());
+ return sourceBuffer.forget();
+}
+
+void
+MediaSource::SourceBufferIsActive(SourceBuffer* aSourceBuffer)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ mActiveSourceBuffers->ClearSimple();
+ bool found = false;
+ for (uint32_t i = 0; i < mSourceBuffers->Length(); i++) {
+ SourceBuffer* sourceBuffer = mSourceBuffers->IndexedGetter(i, found);
+ MOZ_ALWAYS_TRUE(found);
+ if (sourceBuffer == aSourceBuffer) {
+ mActiveSourceBuffers->Append(aSourceBuffer);
+ } else if (sourceBuffer->IsActive()) {
+ mActiveSourceBuffers->AppendSimple(sourceBuffer);
+ }
+ }
+}
+
+void
+MediaSource::RemoveSourceBuffer(SourceBuffer& aSourceBuffer, ErrorResult& aRv)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ SourceBuffer* sourceBuffer = &aSourceBuffer;
+ MSE_API("RemoveSourceBuffer(aSourceBuffer=%p)", sourceBuffer);
+ if (!mSourceBuffers->Contains(sourceBuffer)) {
+ aRv.Throw(NS_ERROR_DOM_NOT_FOUND_ERR);
+ return;
+ }
+
+ sourceBuffer->AbortBufferAppend();
+ // TODO:
+ // abort stream append loop (if running)
+
+ // TODO:
+ // For all sourceBuffer audioTracks, videoTracks, textTracks:
+ // set sourceBuffer to null
+ // remove sourceBuffer video, audio, text Tracks from MediaElement tracks
+ // remove sourceBuffer video, audio, text Tracks and fire "removetrack" at affected lists
+ // fire "removetrack" at modified MediaElement track lists
+ // If removed enabled/selected, fire "change" at affected MediaElement list.
+ if (mActiveSourceBuffers->Contains(sourceBuffer)) {
+ mActiveSourceBuffers->Remove(sourceBuffer);
+ }
+ mSourceBuffers->Remove(sourceBuffer);
+ // TODO: Free all resources associated with sourceBuffer
+}
+
+void
+MediaSource::EndOfStream(const Optional<MediaSourceEndOfStreamError>& aError, ErrorResult& aRv)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_API("EndOfStream(aError=%d)",
+ aError.WasPassed() ? uint32_t(aError.Value()) : 0);
+ if (mReadyState != MediaSourceReadyState::Open ||
+ mSourceBuffers->AnyUpdating()) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+
+ SetReadyState(MediaSourceReadyState::Ended);
+ mSourceBuffers->Ended();
+ if (!aError.WasPassed()) {
+ DurationChange(mSourceBuffers->GetHighestBufferedEndTime(), aRv);
+ // Notify reader that all data is now available.
+ mDecoder->Ended(true);
+ return;
+ }
+ switch (aError.Value()) {
+ case MediaSourceEndOfStreamError::Network:
+ mDecoder->NetworkError();
+ break;
+ case MediaSourceEndOfStreamError::Decode:
+ mDecoder->DecodeError(NS_ERROR_DOM_MEDIA_FATAL_ERR);
+ break;
+ default:
+ aRv.Throw(NS_ERROR_DOM_TYPE_ERR);
+ }
+}
+
+void
+MediaSource::EndOfStream(const MediaResult& aError)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_API("EndOfStream(aError=%d)", aError.Code());
+
+ SetReadyState(MediaSourceReadyState::Ended);
+ mSourceBuffers->Ended();
+ mDecoder->DecodeError(aError);
+}
+
+/* static */ bool
+MediaSource::IsTypeSupported(const GlobalObject& aOwner, const nsAString& aType)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ DecoderDoctorDiagnostics diagnostics;
+ nsresult rv = IsTypeSupported(aType, &diagnostics);
+ nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aOwner.GetAsSupports());
+ diagnostics.StoreFormatDiagnostics(window ? window->GetExtantDoc() : nullptr,
+ aType, NS_SUCCEEDED(rv), __func__);
+#define this nullptr
+ MSE_API("IsTypeSupported(aType=%s)%s ",
+ NS_ConvertUTF16toUTF8(aType).get(), rv == NS_OK ? "OK" : "[not supported]");
+#undef this // don't ever remove this line !
+ return NS_SUCCEEDED(rv);
+}
+
+/* static */ bool
+MediaSource::Enabled(JSContext* cx, JSObject* aGlobal)
+{
+ return Preferences::GetBool("media.mediasource.enabled");
+}
+
+void
+MediaSource::SetLiveSeekableRange(double aStart, double aEnd, ErrorResult& aRv)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+
+ // 1. If the readyState attribute is not "open" then throw an InvalidStateError
+ // exception and abort these steps.
+ if (mReadyState != MediaSourceReadyState::Open) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+
+ // 2. If start is negative or greater than end, then throw a TypeError
+ // exception and abort these steps.
+ if (aStart < 0 || aStart > aEnd) {
+ aRv.Throw(NS_ERROR_DOM_TYPE_ERR);
+ return;
+ }
+
+ // 3. Set live seekable range to be a new normalized TimeRanges object
+ // containing a single range whose start position is start and end position is
+ // end.
+ mLiveSeekableRange =
+ Some(media::TimeInterval(media::TimeUnit::FromSeconds(aStart),
+ media::TimeUnit::FromSeconds(aEnd)));
+}
+
+void
+MediaSource::ClearLiveSeekableRange(ErrorResult& aRv)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+
+ // 1. If the readyState attribute is not "open" then throw an InvalidStateError
+ // exception and abort these steps.
+ if (mReadyState != MediaSourceReadyState::Open) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+
+ // 2. If live seekable range contains a range, then set live seekable range to
+ // be a new empty TimeRanges object.
+ mLiveSeekableRange.reset();
+}
+
+bool
+MediaSource::Attach(MediaSourceDecoder* aDecoder)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_DEBUG("Attach(aDecoder=%p) owner=%p", aDecoder, aDecoder->GetOwner());
+ MOZ_ASSERT(aDecoder);
+ MOZ_ASSERT(aDecoder->GetOwner());
+ if (mReadyState != MediaSourceReadyState::Closed) {
+ return false;
+ }
+ MOZ_ASSERT(!mMediaElement);
+ mMediaElement = aDecoder->GetOwner()->GetMediaElement();
+ MOZ_ASSERT(!mDecoder);
+ mDecoder = aDecoder;
+ mDecoder->AttachMediaSource(this);
+ SetReadyState(MediaSourceReadyState::Open);
+ return true;
+}
+
+void
+MediaSource::Detach()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_DEBUG("mDecoder=%p owner=%p",
+ mDecoder.get(), mDecoder ? mDecoder->GetOwner() : nullptr);
+ if (!mDecoder) {
+ MOZ_ASSERT(mReadyState == MediaSourceReadyState::Closed);
+ MOZ_ASSERT(mActiveSourceBuffers->IsEmpty() && mSourceBuffers->IsEmpty());
+ return;
+ }
+ mMediaElement = nullptr;
+ SetReadyState(MediaSourceReadyState::Closed);
+ if (mActiveSourceBuffers) {
+ mActiveSourceBuffers->Clear();
+ }
+ if (mSourceBuffers) {
+ mSourceBuffers->Clear();
+ }
+ mDecoder->DetachMediaSource();
+ mDecoder = nullptr;
+}
+
+MediaSource::MediaSource(nsPIDOMWindowInner* aWindow)
+ : DOMEventTargetHelper(aWindow)
+ , mDecoder(nullptr)
+ , mPrincipal(nullptr)
+ , mReadyState(MediaSourceReadyState::Closed)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ mSourceBuffers = new SourceBufferList(this);
+ mActiveSourceBuffers = new SourceBufferList(this);
+
+ nsCOMPtr<nsIScriptObjectPrincipal> sop = do_QueryInterface(aWindow);
+ if (sop) {
+ mPrincipal = sop->GetPrincipal();
+ }
+
+ MSE_API("MediaSource(aWindow=%p) mSourceBuffers=%p mActiveSourceBuffers=%p",
+ aWindow, mSourceBuffers.get(), mActiveSourceBuffers.get());
+}
+
+void
+MediaSource::SetReadyState(MediaSourceReadyState aState)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(aState != mReadyState);
+ MSE_DEBUG("SetReadyState(aState=%d) mReadyState=%d", aState, mReadyState);
+
+ MediaSourceReadyState oldState = mReadyState;
+ mReadyState = aState;
+
+ if (mReadyState == MediaSourceReadyState::Open &&
+ (oldState == MediaSourceReadyState::Closed ||
+ oldState == MediaSourceReadyState::Ended)) {
+ QueueAsyncSimpleEvent("sourceopen");
+ if (oldState == MediaSourceReadyState::Ended) {
+ // Notify reader that more data may come.
+ mDecoder->Ended(false);
+ }
+ return;
+ }
+
+ if (mReadyState == MediaSourceReadyState::Ended &&
+ oldState == MediaSourceReadyState::Open) {
+ QueueAsyncSimpleEvent("sourceended");
+ return;
+ }
+
+ if (mReadyState == MediaSourceReadyState::Closed &&
+ (oldState == MediaSourceReadyState::Open ||
+ oldState == MediaSourceReadyState::Ended)) {
+ QueueAsyncSimpleEvent("sourceclose");
+ return;
+ }
+
+ NS_WARNING("Invalid MediaSource readyState transition");
+}
+
+void
+MediaSource::DispatchSimpleEvent(const char* aName)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_API("Dispatch event '%s'", aName);
+ DispatchTrustedEvent(NS_ConvertUTF8toUTF16(aName));
+}
+
+void
+MediaSource::QueueAsyncSimpleEvent(const char* aName)
+{
+ MSE_DEBUG("Queuing event '%s'", aName);
+ nsCOMPtr<nsIRunnable> event = new AsyncEventRunner<MediaSource>(this, aName);
+ NS_DispatchToMainThread(event);
+}
+
+void
+MediaSource::DurationChange(double aNewDuration, ErrorResult& aRv)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MSE_DEBUG("DurationChange(aNewDuration=%f)", aNewDuration);
+
+ // 1. If the current value of duration is equal to new duration, then return.
+ if (mDecoder->GetDuration() == aNewDuration) {
+ return;
+ }
+
+ // 2. If new duration is less than the highest starting presentation timestamp
+ // of any buffered coded frames for all SourceBuffer objects in sourceBuffers,
+ // then throw an InvalidStateError exception and abort these steps.
+ if (aNewDuration < mSourceBuffers->HighestStartTime()) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+
+ // 3. Let highest end time be the largest track buffer ranges end time across
+ // all the track buffers across all SourceBuffer objects in sourceBuffers.
+ double highestEndTime = mSourceBuffers->HighestEndTime();
+ // 4. If new duration is less than highest end time, then
+ // 4.1 Update new duration to equal highest end time.
+ aNewDuration =
+ std::max(aNewDuration, highestEndTime);
+
+ // 5. Update the media duration to new duration and run the HTMLMediaElement
+ // duration change algorithm.
+ mDecoder->SetMediaSourceDuration(aNewDuration);
+}
+
+void
+MediaSource::GetMozDebugReaderData(nsAString& aString)
+{
+ mDecoder->GetMozDebugReaderData(aString);
+}
+
+nsPIDOMWindowInner*
+MediaSource::GetParentObject() const
+{
+ return GetOwner();
+}
+
+JSObject*
+MediaSource::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+ return MediaSourceBinding::Wrap(aCx, this, aGivenProto);
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(MediaSource, DOMEventTargetHelper,
+ mMediaElement,
+ mSourceBuffers, mActiveSourceBuffers)
+
+NS_IMPL_ADDREF_INHERITED(MediaSource, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(MediaSource, DOMEventTargetHelper)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(MediaSource)
+ NS_INTERFACE_MAP_ENTRY(mozilla::dom::MediaSource)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+#undef MSE_DEBUG
+#undef MSE_API
+
+} // namespace dom
+
+} // namespace mozilla