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/*
* Copyright (C) 2010, 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_CONVOLVER_NODE_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CONVOLVER_NODE_H_
#include <memory>
#include "base/gtest_prod_util.h"
#include "base/memory/scoped_refptr.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/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/threading_primitives.h"
namespace blink {
class AudioBuffer;
class ConvolverOptions;
class ExceptionState;
class Reverb;
class SharedAudioBuffer;
class MODULES_EXPORT ConvolverHandler final : public AudioHandler {
public:
static scoped_refptr<ConvolverHandler> Create(AudioNode&, float sample_rate);
~ConvolverHandler() override;
// AudioHandler
void Process(uint32_t frames_to_process) override;
// Called in the main thread when the number of channels for the input may
// have changed.
void CheckNumberOfChannelsForInput(AudioNodeInput*) override;
// Impulse responses
void SetBuffer(AudioBuffer*, ExceptionState&);
bool Normalize() const { return normalize_; }
void SetNormalize(bool normalize) { normalize_ = normalize; }
void SetChannelCount(unsigned, ExceptionState&) final;
void SetChannelCountMode(const String&, ExceptionState&) final;
private:
ConvolverHandler(AudioNode&, float sample_rate);
double TailTime() const override;
double LatencyTime() const override;
bool RequiresTailProcessing() const final;
// Determine how many output channels to use from the number of
// input channels and the number of channels in the impulse response
// buffer.
unsigned ComputeNumberOfOutputChannels(unsigned input_channels,
unsigned response_channels) const;
std::unique_ptr<Reverb> reverb_;
std::unique_ptr<SharedAudioBuffer> shared_buffer_;
// This synchronizes dynamic changes to the convolution impulse response with
// process().
mutable Mutex process_lock_;
// Normalize the impulse response or not. Must default to true.
bool normalize_;
FRIEND_TEST_ALL_PREFIXES(ConvolverNodeTest, ReverbLifetime);
};
class MODULES_EXPORT ConvolverNode final : public AudioNode {
DEFINE_WRAPPERTYPEINFO();
public:
static ConvolverNode* Create(BaseAudioContext&, ExceptionState&);
static ConvolverNode* Create(BaseAudioContext*,
const ConvolverOptions*,
ExceptionState&);
ConvolverNode(BaseAudioContext&);
AudioBuffer* buffer() const;
void setBuffer(AudioBuffer*, ExceptionState&);
bool normalize() const;
void setNormalize(bool);
void Trace(Visitor*) const override;
// InspectorHelperMixin
void ReportDidCreate() final;
void ReportWillBeDestroyed() final;
private:
ConvolverHandler& GetConvolverHandler() const;
Member<AudioBuffer> buffer_;
FRIEND_TEST_ALL_PREFIXES(ConvolverNodeTest, ReverbLifetime);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_CONVOLVER_NODE_H_
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