1/* 2 * Copyright (C) 2012-2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef InbandTextTrackPrivateAVF_h 27#define InbandTextTrackPrivateAVF_h 28 29#if ENABLE(VIDEO) && (USE(AVFOUNDATION) || PLATFORM(IOS)) 30 31#include "InbandTextTrackPrivate.h" 32#include "InbandTextTrackPrivateClient.h" 33#include <wtf/text/StringBuilder.h> 34 35namespace WebCore { 36 37class AVFInbandTrackParent { 38public: 39 virtual ~AVFInbandTrackParent(); 40 41 virtual void trackModeChanged() = 0; 42}; 43 44class InbandTextTrackPrivateAVF : public InbandTextTrackPrivate { 45public: 46 virtual ~InbandTextTrackPrivateAVF(); 47 48 virtual void setMode(InbandTextTrackPrivate::Mode) override; 49 50 virtual int trackIndex() const override { return m_index; } 51 void setTextTrackIndex(int index) { m_index = index; } 52 53 virtual void disconnect(); 54 55 bool hasBeenReported() const { return m_hasBeenReported; } 56 void setHasBeenReported(bool reported) { m_hasBeenReported = reported; } 57 58 virtual void processCue(CFArrayRef attributedStrings, CFArrayRef nativeSamples, double); 59 virtual void resetCueValues(); 60 61 void beginSeeking(); 62 void endSeeking() { m_seeking = false; } 63 bool seeking() const { return m_seeking; } 64 65 enum Category { 66 LegacyClosedCaption, 67 OutOfBand, 68 InBand 69 }; 70 virtual Category textTrackCategory() const = 0; 71 72 virtual double startTimeVariance() const override { return 0.25; } 73 74protected: 75 InbandTextTrackPrivateAVF(AVFInbandTrackParent*, CueFormat); 76 77 void processCueAttributes(CFAttributedStringRef, GenericCueData&); 78 void processAttributedStrings(CFArrayRef, double); 79 void processNativeSamples(CFArrayRef, double); 80 void removeCompletedCues(); 81 82 double m_currentCueStartTime; 83 double m_currentCueEndTime; 84 85 Vector<RefPtr<GenericCueData>> m_cues; 86 AVFInbandTrackParent* m_owner; 87 88 Vector<char> m_sampleInputBuffer; 89 90 enum PendingCueStatus { 91 None, 92 DeliveredDuringSeek, 93 Valid 94 }; 95 PendingCueStatus m_pendingCueStatus; 96 97 int m_index; 98 bool m_hasBeenReported; 99 bool m_seeking; 100 bool m_haveReportedVTTHeader; 101}; 102 103} // namespace WebCore 104 105#endif // ENABLE(VIDEO) && (USE(AVFOUNDATION) || PLATFORM(IOS)) 106 107#endif // InbandTextTrackPrivateAVF_h 108