1/*
2 * Copyright (C) 2013 Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef HTMLMediaSource_h
32#define HTMLMediaSource_h
33
34#include "core/html/URLRegistry.h"
35#include "platform/heap/Handle.h"
36#include "wtf/Forward.h"
37
38namespace blink {
39class WebMediaSource;
40}
41
42namespace blink {
43
44class HTMLMediaElement;
45class TimeRanges;
46
47class HTMLMediaSource : public URLRegistrable, public WillBeGarbageCollectedMixin {
48public:
49    static void setRegistry(URLRegistry*);
50    static HTMLMediaSource* lookup(const String& url) { return s_registry ? static_cast<HTMLMediaSource*>(s_registry->lookup(url)) : 0; }
51
52#if !ENABLE(OILPAN)
53    void ref() { refHTMLMediaSource(); }
54    void deref() { derefHTMLMediaSource(); }
55#endif
56
57    // Called when an HTMLMediaElement is attempting to attach to this object,
58    // and helps enforce attachment to at most one element at a time.
59    // If already attached, returns false. Otherwise, must be in
60    // 'closed' state, and returns true to indicate attachment success.
61    // Reattachment allowed by first calling close() (even if already in 'closed').
62    // Once attached, the source uses the element to synchronously service some
63    // API operations like duration change that may need to initiate seek.
64    virtual bool attachToElement(HTMLMediaElement*) = 0;
65    virtual void setWebMediaSourceAndOpen(PassOwnPtr<blink::WebMediaSource>) = 0;
66    virtual void close() = 0;
67    virtual bool isClosed() const = 0;
68    virtual double duration() const = 0;
69    virtual PassRefPtrWillBeRawPtr<TimeRanges> buffered() const = 0;
70#if !ENABLE(OILPAN)
71    virtual void refHTMLMediaSource() = 0;
72    virtual void derefHTMLMediaSource() = 0;
73#endif
74
75    // URLRegistrable
76    virtual URLRegistry& registry() const OVERRIDE { return *s_registry; }
77
78private:
79    static URLRegistry* s_registry;
80};
81
82}
83
84#endif
85