rtbuf/rtbuf/rtbuf_portaudio.h

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• Hash : c210b9c7
  Author : Thomas de Grivel
  Date : 2020-01-20T20:54:18
  

  test using int16 for portaudio output
  

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• rtbuf_portaudio.h

• /*
   * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  #ifndef RTBUF_PORTAUDIO_H
  #define RTBUF_PORTAUDIO_H
  
  #include <portaudio.h>
  #include "rtbuf_signal.h"
  
  enum {
    RTBUF_PORTAUDIO_LEFT = 0,
    RTBUF_PORTAUDIO_RIGHT,
    RTBUF_PORTAUDIO_CHANNELS
  };
  
  #define RTBUF_PORTAUDIO_SAMPLE_TYPE "short"
  #define RTBUF_PORTAUDIO_SAMPLES \
    (RTBUF_PORTAUDIO_CHANNELS * RTBUF_SIGNAL_SAMPLES)
  
  typedef short                    t_rtbuf_portaudio_sample;
  typedef t_rtbuf_portaudio_sample t_rtbuf_portaudio_samples[RTBUF_PORTAUDIO_SAMPLES];
  
  typedef struct rtbuf_portaudio_input_data {
    t_rtbuf_signal signal[RTBUF_PORTAUDIO_CHANNELS];
    t_rtbuf_portaudio_samples samples;
  } s_rtbuf_portaudio_input_data;
  
  int rtbuf_portaudio_input (s_rtbuf *rtb);
  int rtbuf_portaudio_input_start (s_rtbuf *rtb);
  int rtbuf_portaudio_input_stop (s_rtbuf *rtb);
  
  typedef struct rtbuf_portaudio_output_reserved {
    PaStream *stream;
  } s_rtbuf_portaudio_output_reserved;
  
  typedef struct rtbuf_portaudio_output_data {
    t_rtbuf_portaudio_samples samples;
    s_rtbuf_portaudio_output_reserved reserved;
  } s_rtbuf_portaudio_output_data;
  
  #define RTBUF_PORTAUDIO_OUTPUT_RESERVED_SIZE \
    sizeof(s_rtbuf_portaudio_output_reserved)
  
  int rtbuf_portaudio_output (s_rtbuf *rtb);
  int rtbuf_portaudio_output_start (s_rtbuf *rtb);
  int rtbuf_portaudio_output_stop (s_rtbuf *rtb);
  
  #endif
  

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