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rtspsrc: Add a small configurable teardown delay

Browse source 
This causes rtspsrc to send a teardown and wait on
PAUSED->READY transition, with a configurable delay.
Otherwise, typically teardown never gets sent in
playbin / uridecodebin where the transition back to NULL
happens too quickly.

The timeout is set to 100ms default.

https://bugzilla.gnome.org/show_bug.cgi?id=751994
This commit is contained in:
Jan Schmidt 2018-07-27 00:41:57 +10:00
parent 9a80cdbb40
commit f067b50dd6
2 changed files with 55 additions and 1 deletions
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54
gst/rtsp/gstrtspsrc.c
View file

@ -264,6 +264,7 @@ gst_rtsp_backchannel_get_type (void)
#define DEFAULT_MAX_TS_OFFSET G_GINT64_CONSTANT(3000000000)
#define DEFAULT_VERSION GST_RTSP_VERSION_1_0
#define DEFAULT_BACKCHANNEL GST_RTSP_BACKCHANNEL_NONE
#define DEFAULT_TEARDOWN_TIMEOUT (100 * GST_MSECOND)
enum
{
@ -308,6 +309,7 @@ enum
PROP_MAX_TS_OFFSET,
PROP_DEFAULT_VERSION,
PROP_BACKCHANNEL,
PROP_TEARDOWN_TIMEOUT,
};
#define GST_TYPE_RTSP_NAT_METHOD (gst_rtsp_nat_method_get_type())
@ -875,6 +877,21 @@ gst_rtspsrc_class_init (GstRTSPSrcClass * klass)
GST_TYPE_RTSP_BACKCHANNEL, BACKCHANNEL_NONE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstRtspSrc:teardown-timeout
*
* When transitioning PAUSED-READY, allow up to timeout (in nanoseconds)
* delay in order to send teardown (0 = disabled)
*
* Since: 1.14
*/
g_object_class_install_property (gobject_class, PROP_TEARDOWN_TIMEOUT,
g_param_spec_uint64 ("teardown-timeout", "Teardown Timeout",
"When transitioning PAUSED-READY, allow up to timeout (in nanoseconds) "
"delay in order to send teardown (0 = disabled)",
0, G_MAXUINT64, DEFAULT_TEARDOWN_TIMEOUT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstRTSPSrc::handle-request:
* @rtspsrc: a #GstRTSPSrc
@ -1087,6 +1104,7 @@ gst_rtspsrc_init (GstRTSPSrc * src)
src->max_ts_offset_is_set = FALSE;
src->default_version = DEFAULT_VERSION;
src->version = GST_RTSP_VERSION_INVALID;
src->teardown_timeout = DEFAULT_TEARDOWN_TIMEOUT;
/* get a list of all extensions */
src->extensions = gst_rtsp_ext_list_get ();
@ -1106,6 +1124,7 @@ gst_rtspsrc_init (GstRTSPSrc * src)
g_mutex_init (&src->conninfo.send_lock);
g_mutex_init (&src->conninfo.recv_lock);
g_cond_init (&src->cmd_cond);
GST_OBJECT_FLAG_SET (src, GST_ELEMENT_FLAG_SOURCE);
gst_bin_set_suppressed_flags (GST_BIN (src),
@ -1150,6 +1169,7 @@ gst_rtspsrc_finalize (GObject * object)
g_mutex_clear (&rtspsrc->conninfo.send_lock);
g_mutex_clear (&rtspsrc->conninfo.recv_lock);
g_cond_clear (&rtspsrc->cmd_cond);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
@ -1399,6 +1419,9 @@ gst_rtspsrc_set_property (GObject * object, guint prop_id, const GValue * value,
case PROP_BACKCHANNEL:
rtspsrc->backchannel = g_value_get_enum (value);
break;
case PROP_TEARDOWN_TIMEOUT:
rtspsrc->teardown_timeout = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -1560,6 +1583,9 @@ gst_rtspsrc_get_property (GObject * object, guint prop_id, GValue * value,
case PROP_BACKCHANNEL:
g_value_set_enum (value, rtspsrc->backchannel);
break;
case PROP_TEARDOWN_TIMEOUT:
g_value_set_uint64 (value, rtspsrc->teardown_timeout);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -5599,6 +5625,28 @@ gst_rtspsrc_loop_send_cmd (GstRTSPSrc * src, gint cmd, gint mask)
return flushed;
}
static gboolean
gst_rtspsrc_loop_send_cmd_and_wait (GstRTSPSrc * src, gint cmd, gint mask,
GstClockTime timeout)
{
gboolean flushed = gst_rtspsrc_loop_send_cmd (src, cmd, mask);
if (timeout > 0) {
gint64 end_time = g_get_monotonic_time () + (timeout / 1000);
GST_OBJECT_LOCK (src);
while (src->pending_cmd == cmd || src->busy_cmd == cmd) {
if (!g_cond_wait_until (&src->cmd_cond, GST_OBJECT_GET_LOCK (src),
end_time)) {
GST_WARNING_OBJECT (src,
"Timed out waiting for TEARDOWN to be processed.");
break; /* timeout passed */
}
}
GST_OBJECT_UNLOCK (src);
}
return flushed;
}
static gboolean
gst_rtspsrc_loop (GstRTSPSrc * src)
{
@ -7603,6 +7651,7 @@ gst_rtspsrc_close (GstRTSPSrc * src, gboolean async, gboolean only_close)
/* do TEARDOWN */
res =
gst_rtspsrc_init_request (src, &request, GST_RTSP_TEARDOWN, setup_url);
GST_LOG_OBJECT (src, "Teardown on %s", setup_url);
if (res < 0)
goto create_request_failed;
@ -8370,6 +8419,8 @@ gst_rtspsrc_thread (GstRTSPSrc * src)
}
GST_OBJECT_LOCK (src);
/* No more cmds, wake any waiters */
g_cond_broadcast (&src->cmd_cond);
/* and go back to sleep */
if (src->pending_cmd == CMD_WAIT) {
if (src->task)
@ -8505,7 +8556,8 @@ gst_rtspsrc_change_state (GstElement * element, GstStateChange transition)
ret = GST_STATE_CHANGE_NO_PREROLL;
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_rtspsrc_loop_send_cmd (rtspsrc, CMD_CLOSE, CMD_ALL);
gst_rtspsrc_loop_send_cmd_and_wait (rtspsrc, CMD_CLOSE, CMD_ALL,
rtspsrc->teardown_timeout);
ret = GST_STATE_CHANGE_SUCCESS;
break;
case GST_STATE_CHANGE_READY_TO_NULL:

2
gst/rtsp/gstrtspsrc.h
View file

@ -200,6 +200,7 @@ struct _GstRTSPSrc {
/* UDP mode loop */
gint pending_cmd;
gint busy_cmd;
GCond cmd_cond;
gboolean ignore_timeout;
gboolean open_error;
@ -256,6 +257,7 @@ struct _GstRTSPSrc {
gint64 max_ts_offset;
gboolean max_ts_offset_is_set;
gint backchannel;
GstClockTime teardown_timeout;
/* state */
GstRTSPState state;