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// Copyright 2016 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/webaudio/constant_source_node.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_constant_source_options.h"
#include "third_party/blink/renderer/modules/webaudio/audio_graph_tracer.h"
#include "third_party/blink/renderer/modules/webaudio/base_audio_context.h"
#include "third_party/blink/renderer/modules/webaudio/constant_source_handler.h"
namespace blink {
namespace {
constexpr double kDefaultOffsetValue = 1.0;
} // namespace
ConstantSourceNode::ConstantSourceNode(BaseAudioContext& context)
: AudioScheduledSourceNode(context),
offset_(AudioParam::Create(
context,
Uuid(),
AudioParamHandler::AudioParamType::kParamTypeConstantSourceOffset,
kDefaultOffsetValue,
AudioParamHandler::AutomationRate::kAudio,
AudioParamHandler::AutomationRateMode::kVariable)) {
SetHandler(ConstantSourceHandler::Create(*this, context.sampleRate(),
offset_->Handler()));
}
ConstantSourceNode* ConstantSourceNode::Create(
BaseAudioContext& context,
ExceptionState& exception_state) {
DCHECK(IsMainThread());
return MakeGarbageCollected<ConstantSourceNode>(context);
}
ConstantSourceNode* ConstantSourceNode::Create(
BaseAudioContext* context,
const ConstantSourceOptions* options,
ExceptionState& exception_state) {
DCHECK(IsMainThread());
ConstantSourceNode* node = Create(*context, exception_state);
if (!node) {
return nullptr;
}
node->offset()->setValue(options->offset());
return node;
}
void ConstantSourceNode::Trace(Visitor* visitor) const {
visitor->Trace(offset_);
AudioScheduledSourceNode::Trace(visitor);
}
ConstantSourceHandler& ConstantSourceNode::GetConstantSourceHandler() const {
return static_cast<ConstantSourceHandler&>(Handler());
}
AudioParam* ConstantSourceNode::offset() {
return offset_.Get();
}
void ConstantSourceNode::ReportDidCreate() {
GraphTracer().DidCreateAudioNode(this);
GraphTracer().DidCreateAudioParam(offset_);
}
void ConstantSourceNode::ReportWillBeDestroyed() {
GraphTracer().WillDestroyAudioParam(offset_);
GraphTracer().WillDestroyAudioNode(this);
}
} // namespace blink
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