From 46ad1199deeaf6ba2db31fb3398d3eaa9abdbb2e Mon Sep 17 00:00:00 2001 From: wolfbeast Date: Wed, 13 Dec 2017 12:07:12 +0100 Subject: Don't build EME-specific subroutines without EME. - Checks for restricted or encrypted content - Dispatching 'encrypted' events - Dispatching 'key needed' events - HTML Media Element media keys system - EME telemetry - HTML Media Element EME API This is the main bulk for #26, isolating EME-specific code. --- dom/canvas/CanvasRenderingContext2D.cpp | 2 + dom/html/HTMLMediaElement.cpp | 56 ++++++++++++++++++++++++++- dom/html/HTMLMediaElement.h | 10 +++++ dom/media/MediaDecoderOwner.h | 2 + dom/media/MediaFormatReader.cpp | 12 ++++++ dom/media/mediasource/TrackBuffersManager.cpp | 4 ++ dom/webidl/HTMLMediaElement.webidl | 2 + dom/webidl/moz.build | 2 +- 8 files changed, 88 insertions(+), 2 deletions(-) (limited to 'dom') diff --git a/dom/canvas/CanvasRenderingContext2D.cpp b/dom/canvas/CanvasRenderingContext2D.cpp index b0a430fe4..35ea2cd1a 100644 --- a/dom/canvas/CanvasRenderingContext2D.cpp +++ b/dom/canvas/CanvasRenderingContext2D.cpp @@ -4977,10 +4977,12 @@ CanvasRenderingContext2D::DrawImage(const CanvasImageSource& aImage, return; } +#ifdef MOZ_EME if (video->ContainsRestrictedContent()) { aError.Throw(NS_ERROR_NOT_AVAILABLE); return; } +#endif uint16_t readyState; if (NS_SUCCEEDED(video->GetReadyState(&readyState)) && diff --git a/dom/html/HTMLMediaElement.cpp b/dom/html/HTMLMediaElement.cpp index e81cd20bc..09a354c3d 100644 --- a/dom/html/HTMLMediaElement.cpp +++ b/dom/html/HTMLMediaElement.cpp @@ -11,7 +11,9 @@ #include "mozilla/ArrayUtils.h" #include "mozilla/MathAlgorithms.h" #include "mozilla/AsyncEventDispatcher.h" +#ifdef MOZ_EME #include "mozilla/dom/MediaEncryptedEvent.h" +#endif #include "base/basictypes.h" #include "nsIDOMHTMLMediaElement.h" @@ -820,7 +822,9 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLMediaElement, nsGenericHTM NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTextTrackManager) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAudioTrackList) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mVideoTrackList) +#ifdef MOZ_EME NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMediaKeys) +#endif NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelectedVideoStreamTrack) NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END @@ -845,7 +849,9 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLMediaElement, nsGenericHTMLE NS_IMPL_CYCLE_COLLECTION_UNLINK(mTextTrackManager) NS_IMPL_CYCLE_COLLECTION_UNLINK(mAudioTrackList) NS_IMPL_CYCLE_COLLECTION_UNLINK(mVideoTrackList) +#ifdef MOZ_EME NS_IMPL_CYCLE_COLLECTION_UNLINK(mMediaKeys) +#endif NS_IMPL_CYCLE_COLLECTION_UNLINK(mSelectedVideoStreamTrack) NS_IMPL_CYCLE_COLLECTION_UNLINK_END @@ -1020,12 +1026,14 @@ void HTMLMediaElement::ShutdownDecoder() void HTMLMediaElement::AbortExistingLoads() { +#ifdef MOZ_EME // If there is no existing decoder then we don't have anything to // report. This prevents reporting the initial load from an // empty video element as a failed EME load. if (mDecoder) { ReportEMETelemetry(); } +#endif // Abort any already-running instance of the resource selection algorithm. mLoadWaitStatus = NOT_WAITING; @@ -1084,7 +1092,13 @@ void HTMLMediaElement::AbortExistingLoads() mDownloadSuspendedByCache = false; mMediaInfo = MediaInfo(); mIsEncrypted = false; +<<<<<<< HEAD mPendingEncryptedInitData.mInitDatas.Clear(); +======= +#ifdef MOZ_EME + mPendingEncryptedInitData.Reset(); +#endif +>>>>>>> 8b6178ba9d... Don't build EME-specific subroutines without EME. mWaitingForKey = NOT_WAITING_FOR_KEY; mSourcePointer = nullptr; @@ -2681,9 +2695,11 @@ HTMLMediaElement::CaptureStreamInternal(bool aFinishWhenEnded, if (!window) { return nullptr; } +#ifdef MOZ_EME if (ContainsRestrictedContent()) { return nullptr; } +#endif if (!mOutputStreams.IsEmpty() && aGraph != mOutputStreams[0].mStream->GetInputStream()->Graph()) { @@ -3638,6 +3654,7 @@ void HTMLMediaElement::HiddenVideoStop() mVideoDecodeSuspendTimer = nullptr; } +#ifdef MOZ_EME void HTMLMediaElement::ReportEMETelemetry() { @@ -3649,6 +3666,7 @@ HTMLMediaElement::ReportEMETelemetry() this, mLoadedDataFired ? "true" : "false")); } } +#endif void HTMLMediaElement::ReportTelemetry() @@ -3997,6 +4015,7 @@ nsresult HTMLMediaElement::FinishDecoderSetup(MediaDecoder* aDecoder, ms.mFinishWhenEnded); } +#ifdef MOZ_EME if (mMediaKeys) { if (mMediaKeys->GetCDMProxy()) { mDecoder->SetCDMProxy(mMediaKeys->GetCDMProxy()); @@ -4006,6 +4025,7 @@ nsresult HTMLMediaElement::FinishDecoderSetup(MediaDecoder* aDecoder, return NS_ERROR_FAILURE; } } +#endif MediaEventSource* waitingForKeyProducer = mDecoder->WaitingForKeyEvent(); // Not every decoder will produce waitingForKey events, only add ones that can @@ -4468,7 +4488,11 @@ void HTMLMediaElement::MetadataLoaded(const MediaInfo* aInfo, SetMediaInfo(*aInfo); - mIsEncrypted = aInfo->IsEncrypted() || mPendingEncryptedInitData.IsEncrypted(); + mIsEncrypted = aInfo->IsEncrypted() +#ifdef MOZ_EME + || mPendingEncryptedInitData.IsEncrypted() +#endif + ; mTags = aTags.forget(); mLoadedDataFired = false; ChangeReadyState(nsIDOMHTMLMediaElement::HAVE_METADATA); @@ -4494,11 +4518,17 @@ void HTMLMediaElement::MetadataLoaded(const MediaInfo* aInfo, return; } +#ifdef MOZ_EME // Dispatch a distinct 'encrypted' event for each initData we have. for (const auto& initData : mPendingEncryptedInitData.mInitDatas) { DispatchEncrypted(initData.mInitData, initData.mType); } +<<<<<<< HEAD mPendingEncryptedInitData.mInitDatas.Clear(); +======= + mPendingEncryptedInitData.Reset(); +#endif +>>>>>>> 8b6178ba9d... Don't build EME-specific subroutines without EME. } mWatchManager.ManualNotify(&HTMLMediaElement::UpdateReadyStateInternal); @@ -5431,9 +5461,16 @@ void HTMLMediaElement::SuspendOrResumeElement(bool aPauseElement, bool aSuspendE UpdateAudioChannelPlayingState(); if (aPauseElement) { ReportTelemetry(); +#ifdef MOZ_EME ReportEMETelemetry(); +#endif +<<<<<<< HEAD // For EME content, force destruction of the CDM client (and CDM +======= +#ifdef MOZ_EME + // For EME content, we may force destruction of the CDM client (and CDM +>>>>>>> 8b6178ba9d... Don't build EME-specific subroutines without EME. // instance if this is the last client for that CDM instance) and // the CDM's decoder. This ensures the CDM gets reliable and prompt // shutdown notifications, as it may have book-keeping it needs @@ -5445,6 +5482,7 @@ void HTMLMediaElement::SuspendOrResumeElement(bool aPauseElement, bool aSuspendE ShutdownDecoder(); } } +#endif if (mDecoder) { mDecoder->Pause(); mDecoder->Suspend(); @@ -5495,6 +5533,20 @@ void HTMLMediaElement::NotifyOwnerDocumentActivityChanged() bool pauseElement = ShouldElementBePaused(); SuspendOrResumeElement(pauseElement, !IsActive()); +<<<<<<< HEAD +======= +#ifdef MOZ_EME + // If the owning document has become inactive we should shutdown the CDM. + if (!OwnerDoc()->IsCurrentActiveDocument() && mMediaKeys) { + mMediaKeys->Shutdown(); + mMediaKeys = nullptr; + if (mDecoder) { + ShutdownDecoder(); + } + } +#endif + +>>>>>>> 8b6178ba9d... Don't build EME-specific subroutines without EME. AddRemoveSelfReference(); } @@ -6270,6 +6322,7 @@ HTMLMediaElement::OnVisibilityChange(Visibility aNewVisibility) } +#ifdef MOZ_EME MediaKeys* HTMLMediaElement::GetMediaKeys() const { @@ -6479,6 +6532,7 @@ HTMLMediaElement::GetTopLevelPrincipal() principal = doc->NodePrincipal(); return principal.forget(); } +#endif //MOZ_EME void HTMLMediaElement::CannotDecryptWaitingForKey() diff --git a/dom/html/HTMLMediaElement.h b/dom/html/HTMLMediaElement.h index d40e9df46..b65049206 100644 --- a/dom/html/HTMLMediaElement.h +++ b/dom/html/HTMLMediaElement.h @@ -20,7 +20,9 @@ #include "mozilla/dom/TextTrackManager.h" #include "mozilla/WeakPtr.h" #include "MediaDecoder.h" +#ifdef MOZ_EME #include "mozilla/dom/MediaKeys.h" +#endif #include "mozilla/StateWatching.h" #include "nsGkAtoms.h" #include "PrincipalChangeObserver.h" @@ -630,6 +632,7 @@ public: // XPCOM MozPreservesPitch() is OK +#ifdef MOZ_EME MediaKeys* GetMediaKeys() const; already_AddRefed SetMediaKeys(MediaKeys* mediaKeys, @@ -651,6 +654,7 @@ public: already_AddRefed GetTopLevelPrincipal(); bool ContainsRestrictedContent(); +#endif // MOZ_EME void CannotDecryptWaitingForKey(); @@ -1198,7 +1202,9 @@ protected: */ void HiddenVideoStop(); +#ifdef MOZ_EME void ReportEMETelemetry(); +#endif void ReportTelemetry(); @@ -1471,8 +1477,10 @@ protected: // Timer used to simulate video-suspend. nsCOMPtr mVideoDecodeSuspendTimer; +#ifdef MOZ_EME // Encrypted Media Extension media keys. RefPtr mMediaKeys; +#endif // Stores the time at the start of the current 'played' range. double mCurrentPlayRangeStart; @@ -1627,8 +1635,10 @@ protected: // Listens for waitingForKey events from the owned decoder. MediaEventListener mWaitingForKeyListener; +#ifdef MOZ_EME // Init Data that needs to be sent in 'encrypted' events in MetadataLoaded(). EncryptionInfo mPendingEncryptedInitData; +#endif // True if the media's channel's download has been suspended. Watchable mDownloadSuspendedByCache; diff --git a/dom/media/MediaDecoderOwner.h b/dom/media/MediaDecoderOwner.h index f884686fb..f993b4324 100644 --- a/dom/media/MediaDecoderOwner.h +++ b/dom/media/MediaDecoderOwner.h @@ -143,11 +143,13 @@ public: // reference to the decoder to prevent further calls into the decoder. virtual void NotifyXPCOMShutdown() = 0; +#ifdef MOZ_EME // Dispatches a "encrypted" event to the HTMLMediaElement, with the // provided init data. Actual dispatch may be delayed until HAVE_METADATA. // Main thread only. virtual void DispatchEncrypted(const nsTArray& aInitData, const nsAString& aInitDataType) = 0; +#endif }; } // namespace mozilla diff --git a/dom/media/MediaFormatReader.cpp b/dom/media/MediaFormatReader.cpp index 2093803ad..06e8b963b 100644 --- a/dom/media/MediaFormatReader.cpp +++ b/dom/media/MediaFormatReader.cpp @@ -346,8 +346,12 @@ MediaFormatReader::DecoderFactory::DoCreateDecoder(TrackType aTrack) if (!mOwner->mPlatform) { mOwner->mPlatform = new PDMFactory(); if (mOwner->IsEncrypted()) { +#ifdef MOZ_EME MOZ_ASSERT(mOwner->mCDMProxy); mOwner->mPlatform->SetCDMProxy(mOwner->mCDMProxy); +#else + return MediaResult(NS_ERROR_DOM_MEDIA_FATAL_ERR, "EME not supported"); +#endif } } @@ -577,6 +581,7 @@ MediaFormatReader::InitInternal() return NS_OK; } +#ifdef MOZ_EME class DispatchKeyNeededEvent : public Runnable { public: DispatchKeyNeededEvent(AbstractMediaDecoder* aDecoder, @@ -602,6 +607,7 @@ private: nsTArray mInitData; nsString mInitDataType; }; +#endif void MediaFormatReader::SetCDMProxy(CDMProxy* aProxy) @@ -618,7 +624,11 @@ MediaFormatReader::SetCDMProxy(CDMProxy* aProxy) bool MediaFormatReader::IsWaitingOnCDMResource() { MOZ_ASSERT(OnTaskQueue()); +#ifdef MOZ_EME return IsEncrypted() && !mCDMProxy; +#else + return false; +#endif } RefPtr @@ -725,11 +735,13 @@ MediaFormatReader::OnDemuxerInitDone(nsresult) UniquePtr crypto = mDemuxer->GetCrypto(); if (mDecoder && crypto && crypto->IsEncrypted()) { +#ifdef MOZ_EME // Try and dispatch 'encrypted'. Won't go if ready state still HAVE_NOTHING. for (uint32_t i = 0; i < crypto->mInitDatas.Length(); i++) { NS_DispatchToMainThread( new DispatchKeyNeededEvent(mDecoder, crypto->mInitDatas[i].mInitData, crypto->mInitDatas[i].mType)); } +#endif mInfo.mCrypto = *crypto; } diff --git a/dom/media/mediasource/TrackBuffersManager.cpp b/dom/media/mediasource/TrackBuffersManager.cpp index 4265aed81..ac6d82411 100644 --- a/dom/media/mediasource/TrackBuffersManager.cpp +++ b/dom/media/mediasource/TrackBuffersManager.cpp @@ -58,6 +58,7 @@ AppendStateToStr(SourceBufferAttributes::AppendState aState) static Atomic sStreamSourceID(0u); +#ifdef MOZ_EME class DispatchKeyNeededEvent : public Runnable { public: DispatchKeyNeededEvent(AbstractMediaDecoder* aDecoder, @@ -83,6 +84,7 @@ private: nsTArray mInitData; nsString mInitDataType; }; +#endif TrackBuffersManager::TrackBuffersManager(MediaSourceDecoder* aParentDecoder, const nsACString& aType) @@ -1097,12 +1099,14 @@ TrackBuffersManager::OnDemuxerInitDone(nsresult) UniquePtr crypto = mInputDemuxer->GetCrypto(); if (crypto && crypto->IsEncrypted()) { +#ifdef MOZ_EME // Try and dispatch 'encrypted'. Won't go if ready state still HAVE_NOTHING. for (uint32_t i = 0; i < crypto->mInitDatas.Length(); i++) { NS_DispatchToMainThread( new DispatchKeyNeededEvent(mParentDecoder, crypto->mInitDatas[i].mInitData, crypto->mInitDatas[i].mType)); } +#endif info.mCrypto = *crypto; // We clear our crypto init data array, so the MediaFormatReader will // not emit an encrypted event for the same init data again. diff --git a/dom/webidl/HTMLMediaElement.webidl b/dom/webidl/HTMLMediaElement.webidl index 456579ec1..313686dac 100644 --- a/dom/webidl/HTMLMediaElement.webidl +++ b/dom/webidl/HTMLMediaElement.webidl @@ -153,6 +153,7 @@ partial interface HTMLMediaElement { attribute EventHandler onmozinterruptend; }; +#ifdef MOZ_EME // Encrypted Media Extensions partial interface HTMLMediaElement { [Pref="media.eme.apiVisible"] @@ -168,6 +169,7 @@ partial interface HTMLMediaElement { [Pref="media.eme.apiVisible"] attribute EventHandler onwaitingforkey; }; +#endif // This is just for testing partial interface HTMLMediaElement { diff --git a/dom/webidl/moz.build b/dom/webidl/moz.build index f24c366e8..5dc637799 100644 --- a/dom/webidl/moz.build +++ b/dom/webidl/moz.build @@ -9,6 +9,7 @@ GENERATED_WEBIDL_FILES = [ ] PREPROCESSED_WEBIDL_FILES = [ + 'HTMLMediaElement.webidl', 'Navigator.webidl', 'Node.webidl', 'Promise.webidl', @@ -210,7 +211,6 @@ WEBIDL_FILES = [ 'HTMLLIElement.webidl', 'HTMLLinkElement.webidl', 'HTMLMapElement.webidl', - 'HTMLMediaElement.webidl', 'HTMLMenuElement.webidl', 'HTMLMenuItemElement.webidl', 'HTMLMetaElement.webidl', -- cgit v1.2.3