third_party/WebKit/Source/modules/webmidi/MIDIOutput.h

/*
 * Copyright (C) 2013 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 */

#ifndef MIDIOutput_h
#define MIDIOutput_h

#include <utility>
#include "base/time/time.h"
#include "core/typed_arrays/ArrayBufferViewHelpers.h"
#include "core/typed_arrays/DOMTypedArray.h"
#include "modules/webmidi/MIDIPort.h"
#include "platform/heap/HeapAllocator.h"

namespace blink {

class ExceptionState;
class MIDIAccess;

class MIDIOutput final : public MIDIPort {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static MIDIOutput* Create(MIDIAccess*,
                            unsigned port_index,
                            const String& id,
                            const String& manufacturer,
                            const String& name,
                            const String& version,
                            midi::mojom::PortState);
  ~MIDIOutput() override;

  void send(NotShared<DOMUint8Array>, double timestamp, ExceptionState&);
  void send(Vector<unsigned>, double timestamp, ExceptionState&);

  // send() without optional |timestamp|.
  void send(NotShared<DOMUint8Array>, ExceptionState&);
  void send(Vector<unsigned>, ExceptionState&);

  virtual void Trace(blink::Visitor*);

 private:
  MIDIOutput(MIDIAccess*,
             unsigned port_index,
             const String& id,
             const String& manufacturer,
             const String& name,
             const String& version,
             midi::mojom::PortState);

  void DidOpen(bool opened) override;
  void SendInternal(DOMUint8Array*, base::TimeTicks timestamp, ExceptionState&);

  unsigned port_index_;
  HeapDeque<std::pair<Member<DOMUint8Array>, base::TimeTicks>> pending_data_;
};

}  // namespace blink

#endif  // MIDIOutput_h