audio.h

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//
// Copyright (c) 2023, DefenceX PTY LTD
//
// This file is part of the VivoeX project developed by DefenceX.
//
// Licensed under the Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
// License. See the LICENSE file in the project root for full license details.
//
 
#ifndef HMICORE_HARDWARE_AUDIO_H_
#define HMICORE_HARDWARE_AUDIO_H_
 
#include <portaudio.h>
#include <sndfile.h>
 
#include <string>
 
#include "hmicore/hardware/sample.h"
 
namespace gva {
 
class AudioFunctions {
 public:
  struct CallbackData {
    SNDFILE *file;
    SF_INFO info;
  };
 
  AudioFunctions();
 
  ~AudioFunctions();
 
  AudioFunctions &operator=(const AudioFunctions &) = delete;
 
  AudioFunctions(const AudioFunctions &) = delete;
 
  static int Callback(const void *input, void *output, unsigned long frameCount,  // NOLINT
                      const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags, void *userData);
 
  int Play(AudioSampleBase *sample);
 
  void PlayThreat();
 
  void PlayCaution();
 
  void PlayWarning();
 
  const uint32_t kFramesPerBuffer = 512;
 
 private:
#if _WIN32
  const std::string kThreatFilename = "../sounds/threat.wav";
  const std::string kCautionFilename = "../sounds/caution.wav";
  const std::string kWarningFilename = "../sounds/warning.wav";
#else
  const std::string kThreatFilename = "/opt/gva/hmi/sounds/threat.wav";
  const std::string kCautionFilename = "/opt/gva/hmi/sounds/caution.wav";
  const std::string kWarningFilename = "/opt/gva/hmi/sounds/warning.wav";
#endif
  AudioSample threat_ = AudioSample(kThreatFilename);
  AudioSample caution_ = AudioSample(kCautionFilename);
  AudioSample warning_ = AudioSample(kWarningFilename);
  PaStream *stream_ = nullptr;
 
  static void *AlsaLog(const char *file, int line, const char *function, int err, const char *fmt, ...);
};
 
}  // namespace gva
 
#endif  // HMICORE_HARDWARE_AUDIO_H_