98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/*
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* Copyright (C) 2011, 2014 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. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(VIDEO)
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#include "CachedResourceClient.h"
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#include "CachedResourceHandle.h"
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#include "Timer.h"
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#include "WebVTTParser.h"
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#include <memory>
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namespace WebCore {
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class CachedTextTrack;
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class Document;
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class HTMLTrackElement;
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class TextTrackLoader;
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class VTTCue;
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class TextTrackLoaderClient {
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public:
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virtual ~TextTrackLoaderClient() = default;
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virtual void newCuesAvailable(TextTrackLoader&) = 0;
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virtual void cueLoadingCompleted(TextTrackLoader&, bool loadingFailed) = 0;
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virtual void newRegionsAvailable(TextTrackLoader&) = 0;
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virtual void newStyleSheetsAvailable(TextTrackLoader&) = 0;
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};
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class TextTrackLoader final : public CachedResourceClient, private WebVTTParserClient {
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WTF_MAKE_NONCOPYABLE(TextTrackLoader);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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TextTrackLoader(TextTrackLoaderClient&, Document&);
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virtual ~TextTrackLoader();
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bool load(const URL&, HTMLTrackElement&);
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void cancelLoad();
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Vector<Ref<VTTCue>> getNewCues();
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Vector<Ref<VTTRegion>> getNewRegions();
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Vector<String> getNewStyleSheets();
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private:
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// CachedResourceClient
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void notifyFinished(CachedResource&, const NetworkLoadMetrics&) final;
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void deprecatedDidReceiveCachedResource(CachedResource&) final;
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// WebVTTParserClient
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void newCuesParsed() final;
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void newRegionsParsed() final;
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void newStyleSheetsParsed() final;
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void fileFailedToParse() final;
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void processNewCueData(CachedResource&);
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void cueLoadTimerFired();
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void corsPolicyPreventedLoad();
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enum State { Idle, Loading, Finished, Failed };
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TextTrackLoaderClient& m_client;
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std::unique_ptr<WebVTTParser> m_cueParser;
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CachedResourceHandle<CachedTextTrack> m_resource;
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Document& m_document;
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Timer m_cueLoadTimer;
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State m_state { Idle };
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unsigned m_parseOffset { 0 };
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bool m_newCuesAvailable { false };
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};
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} // namespace WebCore
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#endif // ENABLE(VIDEO)
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