chromium/content/browser/media/webaudio/audio_context_manager_impl.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_MEDIA_WEBAUDIO_AUDIO_CONTEXT_MANAGER_IMPL_H_
#define CONTENT_BROWSER_MEDIA_WEBAUDIO_AUDIO_CONTEXT_MANAGER_IMPL_H_

#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "content/common/content_export.h"
#include "content/public/browser/document_service.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "third_party/blink/public/mojom/webaudio/audio_context_manager.mojom.h"

namespace base {
class TickClock;
}

namespace content {

class RenderFrameHost;

// Implements the mojo interface between WebAudio and the browser so that
// WebAudio can report when audible sounds from an AudioContext starts and
// stops. A manager instance can be associated with multiple AudioContexts.
//
// We do not expect to see more than 3~4 AudioContexts per render frame, so
// handling multiple contexts would not be a significant bottle neck.
class CONTENT_EXPORT AudioContextManagerImpl final
    : public content::DocumentService<blink::mojom::AudioContextManager> { … };

}  // namespace content

#endif  // CONTENT_BROWSER_MEDIA_WEBAUDIO_AUDIO_CONTEXT_MANAGER_IMPL_H_