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-rw-r--r--package/libtapi/src/dialdetector.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/package/libtapi/src/dialdetector.c b/package/libtapi/src/dialdetector.c
new file mode 100644
index 0000000000..ff91b37aa2
--- /dev/null
+++ b/package/libtapi/src/dialdetector.c
@@ -0,0 +1,109 @@
+#include <linux/input.h>
+#include <sys/epoll.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "events.h"
+#include "timerfd.h"
+
+#include "tapi-port.h"
+#include "dialdetector.h"
+
+static const struct itimerspec dialdetector_timeout = {
+ .it_value.tv_sec = 3,
+};
+
+static void dialdetector_note_digit(struct dialdetector *d, unsigned char digit)
+{
+ printf("note digit: %d\n", d->num_digits);
+ d->digits[d->num_digits] = digit;
+ ++d->num_digits;
+}
+
+static void dialdetector_reset(struct dialdetector *d)
+{
+ event_unregister(d->timer_fd);
+ d->num_digits = 0;
+ d->state = DIALDETECTOR_IDLE;
+}
+
+static bool dialdetector_timeout_event(int events, void *data)
+{
+ char num[20];
+ struct dialdetector *dialdetector = data;
+ int i;
+
+ for (i = 0; i < dialdetector->num_digits; ++i) {
+ num[i] = '0' + dialdetector->digits[i];
+ }
+ num[i] = '\0';
+
+ printf("Dialing: %s\n", num);
+ dialdetector->dial_callback(dialdetector->port, dialdetector->num_digits,
+ dialdetector->digits);
+
+ dialdetector_reset(dialdetector);
+
+ return false;
+}
+
+static void dialdetector_port_event(struct tapi_port *port,
+ struct tapi_event *event, void *data)
+{
+ struct dialdetector *d = data;
+
+ printf("port event: %d %d\n", d->state, event->hook.on);
+
+ switch (d->state) {
+ case DIALDETECTOR_IDLE:
+ if (event->type == TAPI_EVENT_TYPE_HOOK && event->hook.on == false) {
+ d->state = DIALDETECTOR_WAIT_FOR_NUMBER;
+ event_register(d->timer_fd, EPOLLIN, &d->timeout_cb);
+ timerfd_settime(d->timer_fd, 0, &dialdetector_timeout, NULL);
+ }
+ break;
+ case DIALDETECTOR_WAIT_FOR_NUMBER:
+ case DIALDETECTOR_WAIT_FOR_NUMBER_TIMEOUT:
+ switch (event->type) {
+ case TAPI_EVENT_TYPE_HOOK:
+ if (event->hook.on == true)
+ dialdetector_reset(d);
+ break;
+ case TAPI_EVENT_TYPE_DTMF:
+ if (d->state == DIALDETECTOR_WAIT_FOR_NUMBER)
+ event_register(d->timer_fd, EPOLLIN, &d->timeout_cb);
+ timerfd_settime(d->timer_fd, 0, &dialdetector_timeout, NULL);
+ d->state = DIALDETECTOR_WAIT_FOR_NUMBER_TIMEOUT;
+ dialdetector_note_digit(d, event->dtmf.code);
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+struct dialdetector *dialdetector_alloc(struct tapi_port *port)
+{
+ struct dialdetector *dialdetector;
+ dialdetector = malloc(sizeof(*dialdetector));
+
+ dialdetector->timer_fd = timerfd_create(CLOCK_MONOTONIC, 0);
+ dialdetector->port = port;
+ dialdetector->num_digits = 0;
+ dialdetector->state = DIALDETECTOR_IDLE;
+
+ dialdetector->timeout_cb.callback = dialdetector_timeout_event;
+ dialdetector->timeout_cb.data = dialdetector;
+
+ dialdetector->port_listener.callback = dialdetector_port_event;
+ dialdetector->port_listener.data = dialdetector;
+
+ tapi_port_register_event(port, &dialdetector->port_listener);
+
+
+ return dialdetector;
+}