rtbuf/rtbuf/rtbuf_synth.h

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• Hash : 17752a6c
  Author : Thomas de Grivel
  Date : 2020-03-04T14:03:48
  

  Downgrade to C89 = ANSI C
  

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• rtbuf_synth.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_SYNTH_H
  #define RTBUF_SYNTH_H
  
  #include "rtbuf.h"
  #include "rtbuf_music.h"
  #include "rtbuf_music_type.h"
  #include "rtbuf_signal.h"
  #include "rtbuf_synth_type.h"
  
  /* adsr */
  
  enum {
    RTBUF_MUSIC_NOTE_IN_ENUM(RTBUF_SYNTH_ADSR_IN),
    RTBUF_SYNTH_ADSR_IN_ATTACK,
    RTBUF_SYNTH_ADSR_IN_DECAY,
    RTBUF_SYNTH_ADSR_IN_SUSTAIN,
    RTBUF_SYNTH_ADSR_IN_RELEASE,
    RTBUF_SYNTH_ADSR_IN_N
  };
  
  enum {
    RTBUF_SYNTH_ENVELOPE_STATE_NOT_STARTED = 0,
    RTBUF_SYNTH_ENVELOPE_STATE_STARTED,
    RTBUF_SYNTH_ENVELOPE_STATE_ENDED
  };
  
  #pragma pack(push,1)
  typedef struct rtbuf_synth_adsr_data {
    t_rtbuf_signal signal;
    int state;
  } s_rtbuf_synth_adsr_data;
  #pragma pack(pop)
  
  int rtbuf_synth_adsr (s_rtbuf *rtb);
  int rtbuf_synth_adsr_start (s_rtbuf *rtb);
  
  /* synth */
  
  enum {
    RTBUF_SYNTH_SYNTH_IN_ENVELOPE = 0,
    RTBUF_SYNTH_SYNTH_IN_OSCILLATOR,
    RTBUF_SYNTH_SYNTH_IN_NOTES,
    RTBUF_SYNTH_NOTES_IN_ENUM(RTBUF_SYNTH_SYNTH_IN_NOTE),
    RTBUF_SYNTH_SYNTH_IN_N
  };
  
  #define RTBUF_SYNTH_SYNTH_IN_NOTE_ENVELOPE(i) \
    (RTBUF_SYNTH_SYNTH_IN_NOTE_0_ENVELOPE + 2 * i)
  
  #define RTBUF_SYNTH_SYNTH_IN_NOTE_OSCILLATOR(i) \
    (RTBUF_SYNTH_SYNTH_IN_NOTE_0_OSCILLATOR + 2 * i)
  
  #pragma pack(push,1)
  typedef struct rtbuf_synth_synth_data
  {
    t_rtbuf_signal signal;
    unsigned int note_n;
  } s_rtbuf_synth_synth_data;
  #pragma pack(pop)
  
  int rtbuf_synth_synth (s_rtbuf *rtb);
  int rtbuf_synth_synth_start (s_rtbuf *rtb);
  
  #endif /* RTBUF_SYNTH_H */
  

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