third_party/WebKit/Source/core/html/track/VideoTrack.cpp

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "core/html/track/VideoTrack.h"
   7
   8 #include "core/html/HTMLMediaElement.h"
   9
  10 namespace blink {
  11
  12 VideoTrack::VideoTrack(const String& id, const AtomicString& kind, const AtomicString& label, const AtomicString& language, bool selected)
  13     : TrackBase(TrackBase::VideoTrack, label, language, id)
  14     , m_selected(selected)
  15 {
  16     setKind(kind);
  17 }
  18
  19 VideoTrack::~VideoTrack()
  20 {
  21 }
  22
  23 DEFINE_TRACE(VideoTrack)
  24 {
  25     TrackBase::trace(visitor);
  26 }
  27
  28 void VideoTrack::setSelected(bool selected)
  29 {
  30     if (selected == m_selected)
  31         return;
  32
  33     m_selected = selected;
  34
  35     if (mediaElement()) {
  36         WebMediaPlayer::TrackId selectedTrackId = trackId();
  37         mediaElement()->selectedVideoTrackChanged(selected ? &selectedTrackId : 0);
  38     }
  39 }
  40
  41 const AtomicString& VideoTrack::alternativeKeyword()
  42 {
  43     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative", AtomicString::ConstructFromLiteral));
  44     return keyword;
  45 }
  46
  47 const AtomicString& VideoTrack::captionsKeyword()
  48 {
  49     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("captions", AtomicString::ConstructFromLiteral));
  50     return keyword;
  51 }
  52
  53 const AtomicString& VideoTrack::mainKeyword()
  54 {
  55     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main", AtomicString::ConstructFromLiteral));
  56     return keyword;
  57 }
  58
  59 const AtomicString& VideoTrack::signKeyword()
  60 {
  61     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("sign", AtomicString::ConstructFromLiteral));
  62     return keyword;
  63 }
  64
  65 const AtomicString& VideoTrack::subtitlesKeyword()
  66 {
  67     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("subtitles", AtomicString::ConstructFromLiteral));
  68     return keyword;
  69 }
  70
  71 const AtomicString& VideoTrack::commentaryKeyword()
  72 {
  73     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("commentary", AtomicString::ConstructFromLiteral));
  74     return keyword;
  75 }
  76
  77 bool VideoTrack::isValidKindKeyword(const String& kind)
  78 {
  79     return (kind == alternativeKeyword())
  80         || (kind == captionsKeyword())
  81         || (kind == mainKeyword())
  82         || (kind == signKeyword())
  83         || (kind == subtitlesKeyword())
  84         || (kind == commentaryKeyword())
  85         || (kind == emptyAtom);
  86 }
  87
  88 AtomicString VideoTrack::defaultKind() const
  89 {
  90     return emptyAtom;
  91 }
  92
  93 } // namespace blink