rtaudio_device.h

/*
 * SPDX-FileCopyrightText: © 2020 Alexandros Theodotou <alex@zrythm.org>
 *
 * SPDX-License-Identifier: LicenseRef-ZrythmLicense
 */
 
#ifndef __AUDIO_RTAUDIO_DEVICE_H__
#define __AUDIO_RTAUDIO_DEVICE_H__
 
#include "zrythm-config.h"
 
#include <array>
#include <string>
 
#include "utils/ring_buffer.h"
 
#if HAVE_RTAUDIO
 
constexpr int RTAUDIO_DEVICE_BUFFER_SIZE = 32000;
 
#  include <semaphore>
 
#  include <rtaudio_c.h>
#  include <stdint.h>
 
class AudioPort;


enum RtAudioDeviceFlow
{
  RTAUDIO_DEVICE_FLOW_OUTPUT,
  RTAUDIO_DEVICE_FLOW_INPUT,
};

class RtAudioDevice
{
public:
  RtAudioDevice (
    bool         is_input,
    unsigned int device_id,
    unsigned int channel_idx,
    std::string  device_name = "");
 
  ~RtAudioDevice ()
  {
    if (opened_)
      {
        close ();
      }
  }

  void open (bool start);

  void close ();

  void start ();

  void stop ();
 
  static void print_dev_info (const rtaudio_device_info_t &nfo);
 
public:
  bool is_input_ = false;

  unsigned int channel_idx_ = 0;

  unsigned int id_ = 0;
 
  std::string name_;

  bool opened_ = false;

  bool started_ = false;
 
  rtaudio_t handle_ = nullptr;

  std::array<float, 0x4000> audio_buf_{};

  RingBuffer<float> audio_ring_{ RTAUDIO_DEVICE_BUFFER_SIZE };

  std::binary_semaphore audio_ring_sem_{ 1 };
};

 
#endif // HAVE_RTAUDIO
#endif