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      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 "core/html/track/TrackBase.h"
     33 
     34 #include "core/html/HTMLMediaElement.h"
     35 
     36 namespace WebCore {
     37 
     38 static blink::WebMediaPlayer::TrackId nextTrackId()
     39 {
     40     static blink::WebMediaPlayer::TrackId next = 0;
     41     return ++next;
     42 }
     43 
     44 TrackBase::TrackBase(Type type, const AtomicString& label, const AtomicString& language, const String& id)
     45     : m_trackId(nextTrackId())
     46     , m_type(type)
     47     , m_label(label)
     48     , m_language(language)
     49     , m_id(id)
     50     , m_mediaElement(nullptr)
     51 {
     52 }
     53 
     54 TrackBase::~TrackBase()
     55 {
     56 #if !ENABLE(OILPAN)
     57     ASSERT(!m_mediaElement);
     58 #endif
     59 }
     60 
     61 
     62 Node* TrackBase::owner() const
     63 {
     64     return m_mediaElement;
     65 }
     66 
     67 void TrackBase::trace(Visitor* visitor)
     68 {
     69     visitor->trace(m_mediaElement);
     70 }
     71 
     72 void TrackBase::setKind(const AtomicString& kind)
     73 {
     74     if (isValidKind(kind))
     75         m_kind = kind;
     76     else
     77         m_kind = defaultKind();
     78 }
     79 
     80 } // namespace WebCore
     81