chromecast/media/audio/audio_output_service/output_socket.h

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROMECAST_MEDIA_AUDIO_AUDIO_OUTPUT_SERVICE_OUTPUT_SOCKET_H_
#define CHROMECAST_MEDIA_AUDIO_AUDIO_OUTPUT_SERVICE_OUTPUT_SOCKET_H_

#include <cstdint>
#include <memory>

#include "chromecast/media/audio/net/audio_socket.h"

namespace net {
class StreamSocket;
}  // namespace net

namespace chromecast {
namespace media {
namespace audio_output_service {
class Generic;

// AudioSocket implementation for sending and receiving messages to/from the
// audio output service.
class OutputSocket : public AudioSocket {
 public:
  class Delegate : public AudioSocket::Delegate {
   public:
    // Called when metadata is received from the other side of the connection.
    // Return |true| if the socket should continue to receive messages.
    virtual bool HandleMetadata(const Generic& message);

   protected:
    ~Delegate() override;
  };

  explicit OutputSocket(std::unique_ptr<net::StreamSocket> socket);
  OutputSocket();
  OutputSocket(const OutputSocket&) = delete;
  OutputSocket& operator=(const OutputSocket&) = delete;
  ~OutputSocket() override;

  // Sets/changes the delegate. Must be called immediately after creation
  // (ie, synchronously on the same sequence).
  void SetDelegate(Delegate* delegate);

 private:
  // AudioSocket implementation:
  bool ParseMetadata(char* data, size_t size) override;

  Delegate* delegate_ = nullptr;
};

}  // namespace audio_output_service
}  // namespace media
}  // namespace chromecast

#endif  // CHROMECAST_MEDIA_AUDIO_AUDIO_OUTPUT_SERVICE_OUTPUT_SOCKET_H_