chromium/src/third_party/blink/renderer/modules/mediastream/media_stream_audio_track_underlying_sink.h

// Copyright 2021 The Chromium Authors. All rights reserved.
// 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_MEDIASTREAM_MEDIA_STREAM_AUDIO_TRACK_UNDERLYING_SINK_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_AUDIO_TRACK_UNDERLYING_SINK_H_

#include "third_party/blink/renderer/core/streams/underlying_sink_base.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/webcodecs/audio_frame.h"

namespace blink {

class MediaStreamAudioSource;
class PushableMediaStreamAudioSource;

class MODULES_EXPORT MediaStreamAudioTrackUnderlyingSink
    : public UnderlyingSinkBase {
 public:
  // |source| must outlive this MediaStreamAudioTrackUnderlyingSink.
  explicit MediaStreamAudioTrackUnderlyingSink(
      PushableMediaStreamAudioSource* source);

  // UnderlyingSinkBase overrides.
  ScriptPromise start(ScriptState* script_state,
                      WritableStreamDefaultController* controller,
                      ExceptionState& exception_state) override;
  ScriptPromise write(ScriptState* script_state,
                      ScriptValue chunk,
                      WritableStreamDefaultController* controller,
                      ExceptionState& exception_state) override;
  ScriptPromise abort(ScriptState* script_state,
                      ScriptValue reason,
                      ExceptionState& exception_state) override;
  ScriptPromise close(ScriptState* script_state,
                      ExceptionState& exception_state) override;

 private:
  base::WeakPtr<MediaStreamAudioSource> source_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_AUDIO_TRACK_UNDERLYING_SINK_H_