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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "speex/speex_echo.h"
#include "speex/speex_preprocess.h"
#define NN 128
#define TAIL 1024
int main(int argc, char **argv)
{
int echo_fd, ref_fd, e_fd;
short echo_buf[NN], ref_buf[NN], e_buf[NN];
SpeexEchoState *st;
SpeexPreprocessState *den;
if (argc != 4)
{
fprintf (stderr, "testecho mic_signal.sw speaker_signal.sw output.sw\n");
exit(1);
}
echo_fd = open (argv[2], O_RDONLY);
ref_fd = open (argv[1], O_RDONLY);
e_fd = open (argv[3], O_WRONLY | O_CREAT | O_TRUNC, 0644);
st = speex_echo_state_init(NN, TAIL);
den = speex_preprocess_state_init(NN, 8000);
int tmp = 8000;
speex_echo_ctl(st, SPEEX_ECHO_SET_SAMPLING_RATE, &tmp);
speex_preprocess_ctl(den, SPEEX_PREPROCESS_SET_ECHO_STATE, st);
while (read(ref_fd, ref_buf, NN*2))
{
read(echo_fd, echo_buf, NN*2);
speex_echo_cancellation(st, ref_buf, echo_buf, e_buf);
speex_preprocess_run(den, e_buf);
write(e_fd, e_buf, NN*2);
}
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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