src/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 void VideoTrack::setSelected(bool selected)
  24 {
  25     if (selected == m_selected)
  26         return;
  27
  28     m_selected = selected;
  29
  30     if (mediaElement()) {
  31         blink::WebMediaPlayer::TrackId selectedTrackId = trackId();
  32         mediaElement()->selectedVideoTrackChanged(selected ? &selectedTrackId : 0);
  33     }
  34 }
  35
  36 const AtomicString& VideoTrack::alternativeKeyword()
  37 {
  38     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative", AtomicString::ConstructFromLiteral));
  39     return keyword;
  40 }
  41
  42 const AtomicString& VideoTrack::captionsKeyword()
  43 {
  44     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("captions", AtomicString::ConstructFromLiteral));
  45     return keyword;
  46 }
  47
  48 const AtomicString& VideoTrack::mainKeyword()
  49 {
  50     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main", AtomicString::ConstructFromLiteral));
  51     return keyword;
  52 }
  53
  54 const AtomicString& VideoTrack::signKeyword()
  55 {
  56     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("sign", AtomicString::ConstructFromLiteral));
  57     return keyword;
  58 }
  59
  60 const AtomicString& VideoTrack::subtitlesKeyword()
  61 {
  62     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("subtitles", AtomicString::ConstructFromLiteral));
  63     return keyword;
  64 }
  65
  66 const AtomicString& VideoTrack::commentaryKeyword()
  67 {
  68     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("commentary", AtomicString::ConstructFromLiteral));
  69     return keyword;
  70 }
  71
  72 bool VideoTrack::isValidKind(const AtomicString& kind) const
  73 {
  74     return (kind == alternativeKeyword())
  75         || (kind == captionsKeyword())
  76         || (kind == mainKeyword())
  77         || (kind == signKeyword())
  78         || (kind == subtitlesKeyword())
  79         || (kind == commentaryKeyword());
  80 }
  81
  82 AtomicString VideoTrack::defaultKind() const
  83 {
  84     return emptyAtom;
  85 }
  86
  87 }