adin_portaudio.c

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/*
 * Copyright (c) 2004-2005 Shikano Lab., Nara Institute of Science and Technology
 * Copyright (c) 2005-2006 Julius project team, Nagoya Institute of Technology, Nagoya Institute of Technology
 * All rights reserved
 */

#include <sent/stddefs.h>

/* sound header */
#include "pa/pablio.h"

PABLIO_Stream *aStream;         

boolean
adin_mic_standby(int sfreq, void *dummy)
{
  PaError err;

  /* for safety... */
  if (sizeof(SP16) != paInt16) {
    j_error("SP16 != paInt16\n");
  }

  /* initialize device and open stream */
  err = OpenAudioStream(&aStream, sfreq, paInt16,
                        (PABLIO_READ | PABLIO_MONO) );
  if (err != paNoError) {
    j_printerr("Error: %s\n", Pa_GetErrorText(err));
    return(FALSE);
  }
  return(TRUE);
}

boolean
adin_mic_start()
{
  return(TRUE);
}

boolean
adin_mic_stop()
{
  return TRUE;
}

int
adin_mic_read(SP16 *buf, int sampnum)
{
  long avail;

  while ((avail = GetAudioStreamReadable(aStream)) <= 0) {
    Pa_Sleep(50);               /* wait for 100ms, till some input comes */
  }
  if (avail > sampnum) avail = sampnum;
  if (avail != ReadAudioStream(aStream, buf, avail)) {
    j_printerr("Error: failed to read %d samples\n", sampnum);
    return(-2);
  }
  return avail;
}

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