95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/*
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* Copyright (C) 2011-2021 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#if ENABLE(VIDEO)
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#include "JSTextTrackCue.h"
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#include "JSDataCue.h"
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#include "JSTrackCustom.h"
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#include "JSVTTCue.h"
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#include "TextTrack.h"
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namespace WebCore {
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using namespace JSC;
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bool JSTextTrackCueOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, AbstractSlotVisitor& visitor, const char** reason)
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{
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JSTextTrackCue* jsTextTrackCue = jsCast<JSTextTrackCue*>(handle.slot()->asCell());
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TextTrackCue& textTrackCue = jsTextTrackCue->wrapped();
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if (!textTrackCue.isContextStopped() && textTrackCue.hasPendingActivity()) {
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if (UNLIKELY(reason))
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*reason = "TextTrackCue with pending activity";
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return true;
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}
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// If the cue is not associated with a track, it is not reachable.
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if (!textTrackCue.track())
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return false;
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if (UNLIKELY(reason))
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*reason = "TextTrack is an opaque root";
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return visitor.containsOpaqueRoot(root(textTrackCue.track()));
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}
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JSValue toJSNewlyCreated(JSGlobalObject*, JSDOMGlobalObject* globalObject, Ref<TextTrackCue>&& cue)
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{
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switch (cue->cueType()) {
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case TextTrackCue::Data:
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return createWrapper<DataCue>(globalObject, WTFMove(cue));
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case TextTrackCue::WebVTT:
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case TextTrackCue::ConvertedToWebVTT:
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return createWrapper<VTTCue>(globalObject, WTFMove(cue));
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case TextTrackCue::Generic:
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return createWrapper<TextTrackCue>(globalObject, WTFMove(cue));
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}
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ASSERT_NOT_REACHED();
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return jsNull();
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}
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JSValue toJS(JSGlobalObject* lexicalGlobalObject, JSDOMGlobalObject* globalObject, TextTrackCue& cue)
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{
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return wrap(lexicalGlobalObject, globalObject, cue);
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}
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template<typename Visitor>
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void JSTextTrackCue::visitAdditionalChildren(Visitor& visitor)
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{
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if (TextTrack* textTrack = wrapped().track())
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visitor.addOpaqueRoot(root(textTrack));
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}
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DEFINE_VISIT_ADDITIONAL_CHILDREN(JSTextTrackCue);
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} // namespace WebCore
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#endif
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