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#include "config.h"
32#include "SourceBufferList.h"
33
34#if ENABLE(MEDIA_SOURCE)
35
36#include "Event.h"
37#include "SourceBuffer.h"
38
39namespace WebCore {
40
41SourceBufferList::SourceBufferList(ScriptExecutionContext* context)
42    : m_scriptExecutionContext(context)
43    , m_asyncEventQueue(*this)
44{
45}
46
47SourceBufferList::~SourceBufferList()
48{
49    ASSERT(m_list.isEmpty());
50}
51
52void SourceBufferList::add(PassRefPtr<SourceBuffer> buffer)
53{
54    m_list.append(buffer);
55    scheduleEvent(eventNames().addsourcebufferEvent);
56}
57
58void SourceBufferList::remove(SourceBuffer* buffer)
59{
60    size_t index = m_list.find(buffer);
61    if (index == notFound)
62        return;
63    m_list.remove(index);
64    scheduleEvent(eventNames().removesourcebufferEvent);
65}
66
67void SourceBufferList::clear()
68{
69    m_list.clear();
70    scheduleEvent(eventNames().removesourcebufferEvent);
71}
72
73void SourceBufferList::swap(Vector<RefPtr<SourceBuffer>>& other)
74{
75    int changeInSize = other.size() - m_list.size();
76    int addedEntries = 0;
77    for (auto& sourceBuffer : other) {
78        if (!m_list.contains(sourceBuffer))
79            ++addedEntries;
80    }
81    int removedEntries = addedEntries - changeInSize;
82
83    m_list.swap(other);
84
85    if (addedEntries)
86        scheduleEvent(eventNames().addsourcebufferEvent);
87    if (removedEntries)
88        scheduleEvent(eventNames().removesourcebufferEvent);
89}
90
91void SourceBufferList::scheduleEvent(const AtomicString& eventName)
92{
93    RefPtr<Event> event = Event::create(eventName, false, false);
94    event->setTarget(this);
95
96    m_asyncEventQueue.enqueueEvent(event.release());
97}
98
99
100} // namespace WebCore
101
102#endif
103