esd.cc

 /*************************************************************************/
 /*                                                                       */
 /*                Centre for Speech Technology Research                  */
 /*                     University of Edinburgh, UK                       */
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 /*************************************************************************/
 /*                                                                       */
 /*                Author :  Richard Caley                                */
 /* -------------------------------------------------------------------   */
 /* EST audio module using the enlightenment speech daemon.               */
 /*                                                                       */
 /*************************************************************************/


#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <cctype>
#include <sys/stat.h>
#include "EST_Wave.h"
#include "EST_Option.h"
#include "audioP.h"
#include "EST_io_aux.h"

#ifdef SUPPORT_ESD

// Hack hack. aupvlist.h is broken at least on FBSD 3.1.1

#undef __cplusplus

extern "C"
{
#include <aupvlist.h>
}
#define __cplusplus

#include <esd.h>

#define au_serverrate 16000

bool esd_supported = TRUE;

static int endian_int = 1;
#define ESD_BIG_ENDIAN (((char *)&endian_int)[0] == 0)

EST_String server;

void get_server(EST_Option &al)
{
  if (al.present("-display"))
    {
      EST_String display = al.val("-display");
      if (display.contains(":"))
    {
      server = display.before(":");
    }
      else
    {
      server = display;
    }
    }
  else
    server = "";
}

int play_esd_wave(EST_Wave &inwave, EST_Option &al)
{

  get_server(al);

  int format;

  switch (inwave.num_channels())
    {
    case 1: format=ESD_MONO;
      break;
      
    case 2: format=ESD_STEREO;
      break;

    default:
      cerr << "EST: " << inwave.num_channels() << " channel data not supported\n";
      return -1;
    }

  format |= ESD_BITS16 | ESD_STREAM | ESD_PLAY;
      
  int sample_rate = inwave.sample_rate();

  int esd =  esd_play_stream( format, sample_rate, 
                  server==EST_String::Empty?NULL:(const char *)server, "from est");

  int n = inwave.num_samples() * sizeof(short) * inwave.num_channels();
  int nw=0, tot=0;
  const char *data = (const char *)(inwave.values().memory());

  while(n > 0 && (nw = write(esd, data+tot, n)) >0)
    {
      n -= nw;
      tot+=nw;
    }

  if (nw < 0)
    {
      cerr << "ESD: error writing - " << strerror(errno) << "\n";
    }

  esd_close(esd);

  return 1;
}

int record_esd_wave(EST_Wave &wave, EST_Option &al)
{
    (void)wave;
    (void)al;

    cerr << "ESD: record not written yet\n";
    return -1;
}

#else
int esd_supported = FALSE;

int play_esd_wave(EST_Wave &inwave, EST_Option &al)
{
    (void)inwave;
    (void)al;
    cerr << "ESD playback not supported" << endl;
    return -1;
}


int record_esd_wave(EST_Wave &wave, EST_Option &al)
{
    (void)wave;
    (void)al;
    cerr << "ESD record not supported" << endl;
    return -1;
}

#endif