#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 "speex/speex_echo.h" #include "speex/speex_preprocess.h" #define NN 128 #define TAIL 1024 int main(int argc, char **argv) { FILE *echo_fd, *ref_fd, *e_fd; short echo_buf[NN], ref_buf[NN], e_buf[NN]; SpeexEchoState *st; SpeexPreprocessState *den; int sampleRate = 8000; if (argc != 4) { fprintf(stderr, "testecho mic_signal.sw speaker_signal.sw output.sw\n"); exit(1); } echo_fd = fopen(argv[2], "rb"); ref_fd = fopen(argv[1], "rb"); e_fd = fopen(argv[3], "wb"); st = speex_echo_state_init(NN, TAIL); den = speex_preprocess_state_init(NN, sampleRate); speex_echo_ctl(st, SPEEX_ECHO_SET_SAMPLING_RATE, &sampleRate); speex_preprocess_ctl(den, SPEEX_PREPROCESS_SET_ECHO_STATE, st); while (!feof(ref_fd) && !feof(echo_fd)) { fread(ref_buf, sizeof(short), NN, ref_fd); fread(echo_buf, sizeof(short), NN, echo_fd); speex_echo_cancellation(st, ref_buf, echo_buf, e_buf); speex_preprocess_run(den, e_buf); fwrite(e_buf, sizeof(short), NN, e_fd); } speex_echo_state_destroy(st); speex_preprocess_state_destroy(den); fclose(e_fd); fclose(echo_fd); fclose(ref_fd); return 0; }