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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "modules/mediasource/TrackDefault.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/ExceptionCode.h"
#include "core/html/track/AudioTrack.h"
#include "core/html/track/TextTrack.h"
#include "core/html/track/VideoTrack.h"
namespace blink {
static const AtomicString& audioKeyword()
{
DEFINE_STATIC_LOCAL(const AtomicString, audio, ("audio", AtomicString::ConstructFromLiteral));
return audio;
}
static const AtomicString& videoKeyword()
{
DEFINE_STATIC_LOCAL(const AtomicString, video, ("video", AtomicString::ConstructFromLiteral));
return video;
}
static const AtomicString& textKeyword()
{
DEFINE_STATIC_LOCAL(const AtomicString, text, ("text", AtomicString::ConstructFromLiteral));
return text;
}
TrackDefault* TrackDefault::create(const AtomicString& type, const String& language, const String& label, const Vector<String>& kinds, const String& byteStreamTrackID, ExceptionState& exceptionState)
{
// Per 11 Nov 2014 Editor's Draft
// https://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html#idl-def-TrackDefault
// with expectation that
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=27352 will be fixed soon:
// When this method is invoked, the user agent must run the following steps:
// 1. if |language| is not an empty string and |language| is not a BCP 47
// language tag, then throw an INVALID_ACCESS_ERR and abort these steps.
// FIXME: Implement BCP 47 language tag validation.
if (type == audioKeyword()) {
// 2.1. If |type| equals "audio":
// If any string in |kinds| contains a value that is not listed as
// applying to audio in the kind categories table, then throw a
// TypeError and abort these steps.
for (const String& kind : kinds) {
if (!AudioTrack::isValidKindKeyword(kind)) {
exceptionState.throwTypeError("Invalid audio track default kind '" + kind + "'");
return nullptr;
}
}
} else if (type == videoKeyword()) {
// 2.2. If |type| equals "video":
// If any string in |kinds| contains a value that is not listed as
// applying to video in the kind categories table, then throw a
// TypeError and abort these steps.
for (const String& kind : kinds) {
if (!VideoTrack::isValidKindKeyword(kind)) {
exceptionState.throwTypeError("Invalid video track default kind '" + kind + "'");
return nullptr;
}
}
} else if (type == textKeyword()) {
// 2.3. If |type| equals "text":
// If any string in |kinds| contains a value that is not listed in the
// text track kind list, then throw a TypeError and abort these
// steps.
for (const String& kind : kinds) {
if (!TextTrack::isValidKindKeyword(kind)) {
exceptionState.throwTypeError("Invalid text track default kind '" + kind + "'");
return nullptr;
}
}
} else {
ASSERT_NOT_REACHED(); // IDL enforcement should prevent this case.
return nullptr;
}
// 3. Set the type attribute on this new object to |type|.
// 4. Set the language attribute on this new object to |language|.
// 5. Set the label attribute on this new object to |label|.
// 6. Set the kinds attribute on this new object to |kinds|.
// 7. Set the byteStreamTrackID attribute on this new object to
// |byteStreamTrackID|.
// These steps are done as constructor initializers.
return new TrackDefault(type, language, label, kinds, byteStreamTrackID);
}
TrackDefault::~TrackDefault()
{
}
TrackDefault::TrackDefault(const AtomicString& type, const String& language, const String& label, const Vector<String>& kinds, const String& byteStreamTrackID)
: m_type(type)
, m_byteStreamTrackID(byteStreamTrackID)
, m_language(language)
, m_label(label)
, m_kinds(kinds)
{
}
} // namespace blink
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