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miracle-dispd: add keep-alive messages

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Change-Id: Ib8fc055789a1bd0a6df3075b176385407c17a74c
This commit is contained in:
Derek Dai 2017-05-09 16:34:35 +08:00
parent 10c0f22adf
commit e81db65e29
1 changed files with 110 additions and 2 deletions
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112
src/disp/wfd-out-session.c
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@ -32,6 +32,7 @@
#define LOCAL_RTP_PORT 16384
#define LOCAL_RTCP_PORT 16385
#define KEEP_ALIVE_INTERVAL 30
struct wfd_out_session
{
@ -40,11 +41,14 @@ struct wfd_out_session
int fd;
struct dispd_encoder *encoder;
sd_event_source *keep_alive_timer;
};
static void on_encoder_state_changed(struct dispd_encoder *e,
enum dispd_encoder_state state,
void *userdata);
static void wfd_out_session_cancel_sink_alive_checking(struct wfd_session *s);
static const struct rtsp_dispatch_entry out_session_rtsp_disp_tbl[];
@ -224,6 +228,9 @@ void wfd_out_session_destroy(struct wfd_session *s)
assert_vret(s);
os = wfd_out_session(s);
wfd_out_session_cancel_sink_alive_checking(s);
if(0 <= os->fd) {
close(os->fd);
os->fd = -1;
@ -531,7 +538,6 @@ static int wfd_out_session_handle_play_request(struct wfd_session *s,
if(0 > r) {
return log_ERR(r);
}
r = rtsp_message_append(m, "<&>", "Session", v);
if(0 > r) {
return log_ERR(r);
@ -597,6 +603,103 @@ static void on_encoder_state_changed(struct dispd_encoder *e,
return;
}
static int wfd_out_session_request_keep_alive(struct wfd_session *s,
struct rtsp *bus,
const struct wfd_arg_list *args,
struct rtsp_message **out)
{
_rtsp_message_unref_ struct rtsp_message *m = NULL;
_shl_free_ char *sess = NULL;
int r;
r = rtsp_message_new_request(bus,
&m,
"GET_PARAMETER",
"rtsp://localhost/wfd1.0");
if(0 > r) {
return log_ERR(r);
}
r = asprintf(&sess, "%X", wfd_session_get_id(s));
if(0 > r) {
return log_ERR(r);
}
r = rtsp_message_append(m, "<&>", "Session", sess);
if(0 > r) {
return log_ERR(r);
}
*out = (rtsp_message_ref(m), m);
return 0;
}
static int wfd_out_session_check_sink_alive(sd_event_source *source,
uint64_t usec,
void *userdata)
{
struct wfd_session *s = userdata;
wfd_session_request(s, RTSP_M16_KEEPALIVE, NULL);
return 0;
}
static int wfd_out_session_init_sink_alive_checking(struct wfd_session *s)
{
struct wfd_out_session *os = wfd_out_session(s);
uint64_t now;
int r;
assert_ret(s);
if(os->keep_alive_timer) {
return 0;
}
r = sd_event_now(ctl_wfd_get_loop(), CLOCK_MONOTONIC, &now);
if(0 > r) {
return log_ERR(r);
}
/* WFD Spec, Section 6.5.1
* A WFD Source shall send RTSP M16 request messages and the time interval
* of two successive
* RTSP M16 request messages shall be smaller than the timeout value set by
* the RTSP M6
* response message minus 5 seconds. */
r = sd_event_add_time(ctl_wfd_get_loop(),
&os->keep_alive_timer,
CLOCK_MONOTONIC,
now + (KEEP_ALIVE_INTERVAL - 5) * 1000 * 1000,
0,
wfd_out_session_check_sink_alive,
wfd_session_ref(s));
if(0 > r) {
return log_ERR(r);
}
return 0;
}
static void wfd_out_session_cancel_sink_alive_checking(struct wfd_session *s)
{
struct wfd_out_session *os = wfd_out_session(s);
assert_vret(s);
if(!os->keep_alive_timer) {
return;
}
sd_event_source_set_enabled(os->keep_alive_timer, false);
sd_event_source_unref(os->keep_alive_timer);
os->keep_alive_timer = NULL;
wfd_session_unref(s);
}
static int wfd_out_session_handle_setup_request(struct wfd_session *s,
struct rtsp_message *req,
struct rtsp_message **out_rep)
@ -649,7 +752,9 @@ static int wfd_out_session_handle_setup_request(struct wfd_session *s,
return log_ERRNO();
}
r = asprintf(&sess, "%X;timeout=30", wfd_session_get_id(s));
r = asprintf(&sess, "%X;timeout=%d",
wfd_session_get_id(s),
KEEP_ALIVE_INTERVAL);
if(0 > r) {
return log_ERRNO();
}
@ -677,6 +782,8 @@ static int wfd_out_session_handle_setup_request(struct wfd_session *s,
dispd_encoder_configure(os->encoder, s);
}
wfd_out_session_init_sink_alive_checking(s);
*out_rep = (rtsp_message_ref(m), m);
return 0;
@ -883,5 +990,6 @@ static const struct rtsp_dispatch_entry out_session_rtsp_disp_tbl[] = {
.handle_request = wfd_out_session_request_not_implement
},
[RTSP_M16_KEEPALIVE] = {
.request = wfd_out_session_request_keep_alive,
},
};