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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DELAY_HANDLER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DELAY_HANDLER_H_
#include <memory>
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/modules/webaudio/audio_handler.h"
#include "third_party/blink/renderer/modules/webaudio/audio_node.h"
namespace blink {
class AudioParamHandler;
class AudioNodeInput;
class Delay;
class DelayHandler final : public AudioHandler {
public:
static scoped_refptr<DelayHandler> Create(AudioNode&,
float sample_rate,
AudioParamHandler& delay_time,
double max_delay_time);
~DelayHandler() override;
private:
DelayHandler(AudioNode&,
float sample_rate,
AudioParamHandler& delay_time,
double max_delay_time);
void Process(uint32_t frames_to_process) override;
void ProcessOnlyAudioParams(uint32_t frames_to_process) override;
void Initialize() override;
void Uninitialize() override;
void CheckNumberOfChannelsForInput(AudioNodeInput*) override;
bool RequiresTailProcessing() const override;
double TailTime() const override;
double LatencyTime() const override;
void PullInputs(uint32_t frames_to_process) override;
unsigned number_of_channels_;
float sample_rate_;
unsigned render_quantum_frames_;
Vector<std::unique_ptr<Delay>> kernels_ GUARDED_BY(process_lock_);
mutable base::Lock process_lock_;
scoped_refptr<AudioParamHandler> delay_time_;
double max_delay_time_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DELAY_HANDLER_H_
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