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     setKind(kind);
  17 }
  18
  19 AudioTrack::~AudioTrack()
  20 {
  21 }
  22
  23 DEFINE_TRACE(AudioTrack)
  24 {
  25     TrackBase::trace(visitor);
  26 }
  27
  28 void AudioTrack::setEnabled(bool enabled)
  29 {
  30     if (enabled == m_enabled)
  31         return;
  32
  33     m_enabled = enabled;
  34
  35     if (mediaElement())
  36         mediaElement()->audioTrackChanged();
  37 }
  38
  39 const AtomicString& AudioTrack::alternativeKeyword()
  40 {
  41     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative", AtomicString::ConstructFromLiteral));
  42     return keyword;
  43 }
  44
  45 const AtomicString& AudioTrack::descriptionsKeyword()
  46 {
  47     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("descriptions", AtomicString::ConstructFromLiteral));
  48     return keyword;
  49 }
  50
  51 const AtomicString& AudioTrack::mainKeyword()
  52 {
  53     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main", AtomicString::ConstructFromLiteral));
  54     return keyword;
  55 }
  56
  57 const AtomicString& AudioTrack::mainDescriptionsKeyword()
  58 {
  59     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main-desc", AtomicString::ConstructFromLiteral));
  60     return keyword;
  61 }
  62
  63 const AtomicString& AudioTrack::translationKeyword()
  64 {
  65     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("translation", AtomicString::ConstructFromLiteral));
  66     return keyword;
  67 }
  68
  69 const AtomicString& AudioTrack::commentaryKeyword()
  70 {
  71     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("commentary", AtomicString::ConstructFromLiteral));
  72     return keyword;
  73 }
  74
  75 bool AudioTrack::isValidKindKeyword(const String& kind)
  76 {
  77     return (kind == alternativeKeyword())
  78         || (kind == descriptionsKeyword())
  79         || (kind == mainKeyword())
  80         || (kind == mainDescriptionsKeyword())
  81         || (kind == translationKeyword())
  82         || (kind == commentaryKeyword())
  83         || (kind == emptyAtom);
  84 }
  85
  86 AtomicString AudioTrack::defaultKind() const
  87 {
  88     return emptyAtom;
  89 }
  90
  91 }