static void
gst_dtmf_detect_state_reset (GstDtmfDetect * self)
{
if (self->dtmf_state)
dtmf_rx_free (self->dtmf_state);
self->dtmf_state = dtmf_rx_init (NULL, NULL, NULL);
}
static switch_bool_t inband_dtmf_callback(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
{
switch_inband_dtmf_t *pvt = (switch_inband_dtmf_t *) user_data;
switch_frame_t *frame = NULL;
switch (type) {
case SWITCH_ABC_TYPE_INIT: {
pvt->dtmf_detect = dtmf_rx_init(NULL, NULL, NULL);
dtmf_rx_parms(pvt->dtmf_detect, pvt->filter_dialtone, pvt->twist, pvt->reverse_twist, pvt->threshold);
dtmf_rx_set_realtime_callback(pvt->dtmf_detect, spandsp_dtmf_rx_realtime_callback, pvt);
break;
}
case SWITCH_ABC_TYPE_CLOSE:
if (pvt->dtmf_detect) {
dtmf_rx_free(pvt->dtmf_detect);
}
break;
case SWITCH_ABC_TYPE_READ_REPLACE:
if ((frame = switch_core_media_bug_get_read_replace_frame(bug))) {
dtmf_rx(pvt->dtmf_detect, frame->data, frame->samples);
switch_core_media_bug_set_read_replace_frame(bug, frame);
}
break;
case SWITCH_ABC_TYPE_WRITE:
default:
break;
}
return SWITCH_TRUE;
}
static void
gst_dtmf_detect_finalize (GObject * object)
{
GstDtmfDetect *self = GST_DTMF_DETECT (object);
if (self->dtmf_state)
dtmf_rx_free (self->dtmf_state);
G_OBJECT_CLASS (gst_dtmf_detect_parent_class)->finalize (object);
}
int main(int argc, char *argv[])
{
int rc = 0;
short readbuf[160];
char digitsbuf[255];
int fd = open(argv[1], O_RDONLY);
#if defined(BELL_DETECTOR)
bell_mf_rx_state_t *rxstate = NULL;
if (!(rxstate = bell_mf_rx_init(rxstate, NULL, NULL))) {
fprintf(stderr, "bell_mf_rx_init\n");
return -1;
}
#elif defined(MF_DETECTOR_FWD)
r2_mf_rx_state_t *rxstate = NULL;
if (!(rxstate = r2_mf_rx_init(rxstate, 1, NULL, NULL))) {
fprintf(stderr, "r2_mf_rx_init fwd\n");
return -1;
}
#elif defined(MF_DETECTOR_BWD)
r2_mf_rx_state_t *rxstate = NULL;
if (!(rxstate = r2_mf_rx_init(rxstate, 0, NULL, NULL))) {
fprintf(stderr, "r2_mf_rx_init backward\n");
return -1;
}
#elif defined(DTMF_DETECTOR)
dtmf_rx_state_t *rxstate = NULL;
if (!(rxstate = dtmf_rx_init(rxstate, NULL, NULL))) {
fprintf(stderr, "dtmf_rx_init\n");
return -1;
}
#else
#error "define detector type!"
#endif
if (fd == -1) {
perror("fopen");
return -1;
}
while (1) {
rc = read(fd, readbuf, sizeof(readbuf)/sizeof(readbuf[0]));
if (rc < 0) {
perror("read");
break;
}
if (!rc) {
break;
}
#if defined(BELL_DETECTOR)
rc = bell_mf_rx(rxstate, readbuf, rc/2);
if (rc != 0) {
fprintf(stderr, "Unprocessed samples: %d\n", rc);
break;
}
digitsbuf[0] = '\0';
rc = bell_mf_rx_get(rxstate, digitsbuf, sizeof(digitsbuf)-1);
if (rc > 0) {
printf("Rx digits: %s\n", digitsbuf);
}
#elif defined(MF_DETECTOR_FWD) || defined(MF_DETECTOR_BWD)
rc = r2_mf_rx(rxstate, readbuf, rc/2);
if (rc != 0) {
fprintf(stderr, "Unprocessed samples: %d\n", rc);
break;
}
rc = r2_mf_rx_get(rxstate);
if (rc > 0) {
printf("Rx digit: %c\n", rc);
}
#elif defined(DTMF_DETECTOR)
rc = dtmf_rx(rxstate, readbuf, rc/2);
if (rc != 0) {
fprintf(stderr, "Unprocessed samples: %d\n", rc);
break;
}
digitsbuf[0] = '\0';
rc = dtmf_rx_get(rxstate, digitsbuf, sizeof(digitsbuf)-1);
if (rc > 0) {
printf("Rx digit: %s\n", digitsbuf);
}
#else
#error "define detector type!"
#endif
}
#if defined(BELL_DETECTOR)
bell_mf_rx_free(rxstate);
#elif defined(MF_DETECTOR_FWD) || defined(MF_DETECTOR_BWD)
r2_mf_rx_free(rxstate);
#elif defined(DTMF_DETECTOR)
dtmf_rx_free(rxstate);
#endif
close(fd);
return 0;
}
int main(int argc, char *argv[])
{
struct stat statbuf;
FILE *audiofp;
short slinear_buffer[CHUNK_SAMPLES];
char alaw_buffer[CHUNK_SAMPLES];
char *chunk_buffer;
size_t chunksize = 0;
int format = FORMAT_INVALID;
int i = 0;
char digit = 0;
char currdigit = 0;
dtmf_rx_state_t *rxstate = NULL;
printf("Running DTMF Detection Test - alaw or slinear 8000hz only\n");
if (argc < 3) {
fprintf(stderr, USAGE, argv[0]);
exit(1);
}
if (!strncasecmp(argv[1], "alaw", sizeof("alaw")-1)) {
format = FORMAT_ALAW;
chunksize = sizeof(alaw_buffer);
chunk_buffer = alaw_buffer;
} else if (!strncasecmp(argv[1], "slinear", sizeof("slinear")-1)) {
format = FORMAT_SLINEAR;
chunksize = sizeof(slinear_buffer);
chunk_buffer = (char *)slinear_buffer;
} else {
fprintf(stderr, USAGE, argv[0]);
exit(1);
}
printf("Using file %s\n", argv[2]);
if (stat(argv[2], &statbuf)) {
perror("could not stat audio file");
exit(1);
}
audiofp = fopen(argv[2], "r");
if (!audiofp) {
perror("could not open audio file");
exit(1);
}
rxstate = dtmf_rx_init(rxstate, on_dtmf_detected, NULL);
printf("reading chunks of %d bytes\n", chunksize);
while (fread(chunk_buffer, chunksize, 1, audiofp) == 1) {
if (format == FORMAT_ALAW) {
/* chunksize == bytes == samples */
for (i = 0; i < chunksize; i++) {
slinear_buffer[i] = alaw_to_linear(chunk_buffer[i]);
}
}
dtmf_rx(rxstate, slinear_buffer, CHUNK_SAMPLES);
digit = dtmf_rx_status(rxstate);
if (digit) {
currdigit = digit;
printf("%c ON\n", currdigit);
} else if (currdigit) {
printf("%c OFF\n", currdigit);
currdigit = 0;
}
}
dtmf_rx_free(rxstate);
fclose(audiofp);
return 0;
}
