1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
* Copyright (C) 2011, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(VIDEO)
#include "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include "LoaderMalloc.h"
#include "Timer.h"
#include "WebVTTParser.h"
#include <memory>
#include <wtf/CheckedPtr.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class TextTrackLoaderClient;
}
namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebCore::TextTrackLoaderClient> : std::true_type { };
}
namespace WebCore {
class CachedTextTrack;
class Document;
class HTMLTrackElement;
class TextTrackLoader;
class VTTCue;
class TextTrackLoaderClient : public CanMakeWeakPtr<TextTrackLoaderClient> {
public:
virtual ~TextTrackLoaderClient() = default;
virtual void newCuesAvailable(TextTrackLoader&) = 0;
virtual void cueLoadingCompleted(TextTrackLoader&, bool loadingFailed) = 0;
virtual void newRegionsAvailable(TextTrackLoader&) = 0;
virtual void newStyleSheetsAvailable(TextTrackLoader&) = 0;
};
class TextTrackLoader final : public CachedResourceClient, private WebVTTParserClient, public CanMakeCheckedPtr<TextTrackLoader> {
WTF_MAKE_NONCOPYABLE(TextTrackLoader);
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(Loader);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(TextTrackLoader);
public:
TextTrackLoader(TextTrackLoaderClient&, Document&);
virtual ~TextTrackLoader();
bool load(const URL&, HTMLTrackElement&);
void cancelLoad();
Vector<Ref<VTTCue>> getNewCues();
Vector<Ref<VTTRegion>> getNewRegions();
Vector<String> getNewStyleSheets();
private:
// CachedResourceClient
void notifyFinished(CachedResource&, const NetworkLoadMetrics&, LoadWillContinueInAnotherProcess) final;
void deprecatedDidReceiveCachedResource(CachedResource&) final;
// WebVTTParserClient
void newCuesParsed() final;
void newRegionsParsed() final;
void newStyleSheetsParsed() final;
void fileFailedToParse() final;
void processNewCueData(CachedResource&);
void cueLoadTimerFired();
void corsPolicyPreventedLoad();
Ref<Document> protectedDocument() const;
CachedResourceHandle<CachedTextTrack> protectedResource() const;
enum State { Idle, Loading, Finished, Failed };
WeakRef<TextTrackLoaderClient> m_client;
std::unique_ptr<WebVTTParser> m_cueParser;
CachedResourceHandle<CachedTextTrack> m_resource;
WeakRef<Document, WeakPtrImplWithEventTargetData> m_document;
Timer m_cueLoadTimer;
State m_state { Idle };
unsigned m_parseOffset { 0 };
bool m_newCuesAvailable { false };
};
} // namespace WebCore
#endif // ENABLE(VIDEO)
|
