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/*
* Copyright (C) 2011, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DYNAMICS_COMPRESSOR_NODE_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DYNAMICS_COMPRESSOR_NODE_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(const String&, 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);
};
class MODULES_EXPORT DynamicsCompressorNode final : public AudioNode {
DEFINE_WRAPPERTYPEINFO();
public:
static DynamicsCompressorNode* Create(BaseAudioContext&, ExceptionState&);
static DynamicsCompressorNode* Create(BaseAudioContext*,
const DynamicsCompressorOptions*,
ExceptionState&);
DynamicsCompressorNode(BaseAudioContext&);
void Trace(Visitor*) const override;
AudioParam* threshold() const;
AudioParam* knee() const;
AudioParam* ratio() const;
float reduction() const;
AudioParam* attack() const;
AudioParam* release() const;
// InspectorHelperMixin
void ReportDidCreate() final;
void ReportWillBeDestroyed() final;
private:
DynamicsCompressorHandler& GetDynamicsCompressorHandler() const;
Member<AudioParam> threshold_;
Member<AudioParam> knee_;
Member<AudioParam> ratio_;
Member<AudioParam> attack_;
Member<AudioParam> release_;
FRIEND_TEST_ALL_PREFIXES(DynamicsCompressorNodeTest, ProcessorLifetime);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_DYNAMICS_COMPRESSOR_NODE_H_
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