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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <speex/speex_echo.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <speex/speex_preprocess.h>
#define NN 160
int main()
{
int i;
int echo_fd, ref_fd, e_fd;
float echo[NN], ref[NN], e[NN];
short noise[NN];
short echo_buf[NN], ref_buf[NN], e_buf[NN];
SpeexEchoState *st;
SpeexPreprocessState *den;
echo_fd = open ("play.sw", O_RDONLY);
ref_fd = open ("rec.sw", O_RDONLY);
e_fd = open ("echo.sw", O_WRONLY | O_CREAT | O_TRUNC, 0644);
st = speex_echo_state_init(NN, 8*NN);
den = speex_preprocess_state_init(NN, 8000);
while (read(ref_fd, ref_buf, NN*2))
{
read(echo_fd, echo_buf, NN*2);
/*
for (i=0;i<NN;i++)
ref[i] = ref_buf[i];
for (i=0;i<NN;i++)
echo[i] = echo_buf[i];
*/
speex_echo_cancel(st, ref_buf, echo_buf, e_buf, NULL);
/*speex_denoise(den, e, noise);*/
/* for (i=0;i<NN;i++)
e_buf[i] = e[i];
*/
write(e_fd, e_buf, NN*2);
#if 0
for (i=0;i<NN;i++)
printf ("%f\n", e[i]);
#endif
}
#if 0
for (i=0;i<st->window_size;i++)
printf ("%f\n", st->W[i]);
#endif
speex_echo_state_destroy(st);
speex_preprocess_state_destroy(den);
close(e_fd);
close(echo_fd);
close(ref_fd);
return 0;
}
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