54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "speex/speex_echo.h"
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#include "speex/speex_preprocess.h"
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#define NN 128
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#define TAIL 1024
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int main(int argc, char **argv)
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{
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int echo_fd, ref_fd, e_fd;
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short echo_buf[NN], ref_buf[NN], e_buf[NN];
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SpeexEchoState *st;
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SpeexPreprocessState *den;
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if (argc != 4)
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{
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fprintf (stderr, "testecho mic_signal.sw speaker_signal.sw output.sw\n");
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exit(1);
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}
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echo_fd = open (argv[2], O_RDONLY);
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ref_fd = open (argv[1], O_RDONLY);
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e_fd = open (argv[3], O_WRONLY | O_CREAT | O_TRUNC, 0644);
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st = speex_echo_state_init(NN, TAIL);
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den = speex_preprocess_state_init(NN, 8000);
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int tmp = 8000;
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speex_echo_ctl(st, SPEEX_ECHO_SET_SAMPLING_RATE, &tmp);
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speex_preprocess_ctl(den, SPEEX_PREPROCESS_SET_ECHO_STATE, st);
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while (read(ref_fd, ref_buf, NN*2))
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{
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read(echo_fd, echo_buf, NN*2);
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speex_echo_cancellation(st, ref_buf, echo_buf, e_buf);
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speex_preprocess_run(den, e_buf);
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write(e_fd, e_buf, NN*2);
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}
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speex_echo_state_destroy(st);
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speex_preprocess_state_destroy(den);
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close(e_fd);
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close(echo_fd);
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close(ref_fd);
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return 0;
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}
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