src/third_party/WebKit/Source/core/html/track/AudioTrack.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/AudioTrack.h"
   7
   8 #include "core/html/HTMLMediaElement.h"
   9
  10 namespace blink {
  11
  12 AudioTrack::AudioTrack(const String& id, const AtomicString& kind, const AtomicString& label, const AtomicString& language, bool enabled)
  13     : TrackBase(TrackBase::AudioTrack, label, language, id)
  14     , m_enabled(enabled)
  15 {
  16     ScriptWrappable::init(this);
  17     setKind(kind);
  18 }
  19
  20 AudioTrack::~AudioTrack()
  21 {
  22 }
  23
  24 void AudioTrack::setEnabled(bool enabled)
  25 {
  26     if (enabled == m_enabled)
  27         return;
  28
  29     m_enabled = enabled;
  30
  31     if (mediaElement())
  32         mediaElement()->audioTrackChanged();
  33 }
  34
  35 const AtomicString& AudioTrack::alternativeKeyword()
  36 {
  37     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative", AtomicString::ConstructFromLiteral));
  38     return keyword;
  39 }
  40
  41 const AtomicString& AudioTrack::descriptionsKeyword()
  42 {
  43     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("descriptions", AtomicString::ConstructFromLiteral));
  44     return keyword;
  45 }
  46
  47 const AtomicString& AudioTrack::mainKeyword()
  48 {
  49     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main", AtomicString::ConstructFromLiteral));
  50     return keyword;
  51 }
  52
  53 const AtomicString& AudioTrack::mainDescriptionsKeyword()
  54 {
  55     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main-desc", AtomicString::ConstructFromLiteral));
  56     return keyword;
  57 }
  58
  59 const AtomicString& AudioTrack::translationKeyword()
  60 {
  61     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("translation", AtomicString::ConstructFromLiteral));
  62     return keyword;
  63 }
  64
  65 const AtomicString& AudioTrack::commentaryKeyword()
  66 {
  67     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("commentary", AtomicString::ConstructFromLiteral));
  68     return keyword;
  69 }
  70
  71 bool AudioTrack::isValidKind(const AtomicString& kind) const
  72 {
  73     return (kind == alternativeKeyword())
  74         || (kind == descriptionsKeyword())
  75         || (kind == mainKeyword())
  76         || (kind == mainDescriptionsKeyword())
  77         || (kind == translationKeyword())
  78         || (kind == commentaryKeyword());
  79 }
  80
  81 AtomicString AudioTrack::defaultKind() const
  82 {
  83     return emptyAtom;
  84 }
  85
  86 }