record_audio.h

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// Copyright (c) 2017, The Regents of the University of California
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#ifndef COGROB_CLOUD_SPEECH_RECORD_AUDIO_H_
#define COGROB_CLOUD_SPEECH_RECORD_AUDIO_H_

#include "portaudio.h"

#include <atomic>
#include <memory>
#include <thread>

#include "util/simple_thread_safe_queue.h"
#include "cogrob/cloud/speech/audio_sample.h"

namespace cogrob {
namespace cloud {
namespace speech {

class AudioRecorder {
 public:
  explicit AudioRecorder(AudioQueue* output_queue);
  virtual ~AudioRecorder();
 private:
  AudioQueue* queue_;
  PaStream* pa_stream_ = nullptr;
  void StartRecording();
  void StopRecording();
  static int PortAudioCallback(
      const void* input, void* output, unsigned long frame_count,
      const PaStreamCallbackTimeInfo* time_info,
      PaStreamCallbackFlags status_flags, void* user_data);
};

}  // namespace speech
}  // namespace cloud
}  // namespace cogrob

#endif  // COGROB_CLOUD_SPEECH_RECORD_AUDIO_H_