chromium/third_party/blink/renderer/modules/webaudio/audio_param_handler.h

// 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_AUDIO_PARAM_HANDLER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_AUDIO_PARAM_HANDLER_H_

#include <sys/types.h>

#include <atomic>

#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/core/typed_arrays/array_buffer_view_helpers.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_typed_array.h"
#include "third_party/blink/renderer/modules/webaudio/audio_param_timeline.h"
#include "third_party/blink/renderer/modules/webaudio/audio_summing_junction.h"
#include "third_party/blink/renderer/modules/webaudio/base_audio_context.h"
#include "third_party/blink/renderer/modules/webaudio/inspector_helper_mixin.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/thread_safe_ref_counted.h"

namespace blink {

class AudioNodeOutput;

// AudioParamHandler is an actual implementation of web-exposed AudioParam
// interface. Each of AudioParam object creates and owns an AudioParamHandler,
// and it is responsible for all of AudioParam tasks. An AudioParamHandler
// object is owned by the originator AudioParam object, and some audio
// processing classes have additional references. An AudioParamHandler can
// outlive the owner AudioParam, and it never dies before the owner AudioParam
// dies.
//
// Connected to AudioNodeOutput using AudioNodeWiring.
class AudioParamHandler final : public ThreadSafeRefCounted<AudioParamHandler>,
                                public AudioSummingJunction { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_AUDIO_PARAM_HANDLER_H_