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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/mediasource/track_default.h"
#include "third_party/blink/renderer/bindings/core/v8/to_v8_traits.h"
#include "third_party/blink/renderer/core/html/track/audio_track.h"
#include "third_party/blink/renderer/core/html/track/text_track.h"
#include "third_party/blink/renderer/core/html/track/video_track.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
namespace blink {
AtomicString TrackDefault::AudioKeyword() {
return AtomicString("audio");
}
AtomicString TrackDefault::VideoKeyword() {
return AtomicString("video");
}
AtomicString TrackDefault::TextKeyword() {
return AtomicString("text");
}
ScriptObject TrackDefault::kinds(ScriptState* script_state) const {
return ScriptObject(
script_state->GetIsolate(),
ToV8Traits<IDLSequence<IDLString>>::ToV8(script_state, kinds_));
}
TrackDefault* TrackDefault::Create(const V8TrackDefaultType& type,
const String& language,
const String& label,
const Vector<String>& kinds,
const String& byte_stream_track_id,
ExceptionState& exception_state) {
// 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.AsEnum() == V8TrackDefaultType::Enum::kAudio) {
// 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)) {
exception_state.ThrowTypeError("Invalid audio track default kind '" +
kind + "'");
return nullptr;
}
}
} else if (type.AsEnum() == V8TrackDefaultType::Enum::kVideo) {
// 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)) {
exception_state.ThrowTypeError("Invalid video track default kind '" +
kind + "'");
return nullptr;
}
}
} else if (type.AsEnum() == V8TrackDefaultType::Enum::kText) {
// 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)) {
exception_state.ThrowTypeError("Invalid text track default kind '" +
kind + "'");
return nullptr;
}
}
} else {
NOTREACHED();
}
// 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 MakeGarbageCollected<TrackDefault>(type, language, label, kinds,
byte_stream_track_id);
}
TrackDefault::~TrackDefault() = default;
TrackDefault::TrackDefault(const V8TrackDefaultType& type,
const String& language,
const String& label,
const Vector<String>& kinds,
const String& byte_stream_track_id)
: type_(type),
byte_stream_track_id_(byte_stream_track_id),
language_(language),
label_(label),
kinds_(kinds) {}
} // namespace blink
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