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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_DYNAMICS_COMPRESSOR_HANDLER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DYNAMICS_COMPRESSOR_HANDLER_H_
#include <atomic>
#include <memory>
#include "base/gtest_prod_util.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/webaudio/audio_node.h"
#include "third_party/blink/renderer/modules/webaudio/audio_param.h"
namespace blink {
class BaseAudioContext;
class DynamicsCompressor;
class DynamicsCompressorOptions;
class MODULES_EXPORT DynamicsCompressorHandler final : public AudioHandler {
public:
static scoped_refptr<DynamicsCompressorHandler> Create(
AudioNode&,
float sample_rate,
AudioParamHandler& threshold,
AudioParamHandler& knee,
AudioParamHandler& ratio,
AudioParamHandler& attack,
AudioParamHandler& release);
~DynamicsCompressorHandler() override;
// AudioHandler
void Process(uint32_t frames_to_process) override;
void ProcessOnlyAudioParams(uint32_t frames_to_process) override;
void Initialize() override;
float ReductionValue() const {
return reduction_.load(std::memory_order_relaxed);
}
void SetChannelCount(unsigned, ExceptionState&) final;
void SetChannelCountMode(V8ChannelCountMode::Enum, ExceptionState&) final;
private:
DynamicsCompressorHandler(AudioNode&,
float sample_rate,
AudioParamHandler& threshold,
AudioParamHandler& knee,
AudioParamHandler& ratio,
AudioParamHandler& attack,
AudioParamHandler& release);
bool RequiresTailProcessing() const final;
double TailTime() const override;
double LatencyTime() const override;
std::unique_ptr<DynamicsCompressor> dynamics_compressor_;
scoped_refptr<AudioParamHandler> threshold_;
scoped_refptr<AudioParamHandler> knee_;
scoped_refptr<AudioParamHandler> ratio_;
std::atomic<float> reduction_;
scoped_refptr<AudioParamHandler> attack_;
scoped_refptr<AudioParamHandler> release_;
FRIEND_TEST_ALL_PREFIXES(DynamicsCompressorNodeTest, ProcessorLifetime);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DYNAMICS_COMPRESSOR_HANDLER_H_
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