gst/rtpmanager/: Some more ghostpad magic.

Original commit message from CVS:
* gst/rtpmanager/gstrtpbin.c: (find_session_by_id),
(create_session), (gst_rtp_bin_base_init), (create_recv_rtp),
(create_recv_rtcp), (create_send_rtp), (create_rtcp),
(gst_rtp_bin_request_new_pad):
* gst/rtpmanager/gstrtpbin.h:
* gst/rtpmanager/gstrtpclient.c:
Some more ghostpad magic.
This commit is contained in:
Wim Taymans 2007-04-03 11:35:39 +00:00 committed by Tim-Philipp Müller
parent fdae491de7
commit 5351f0cb51
3 changed files with 350 additions and 7 deletions

View file

@ -79,8 +79,8 @@ GST_STATIC_PAD_TEMPLATE ("recv_rtp_src_%d_%d_%d",
GST_STATIC_CAPS ("application/x-rtp")
);
static GstStaticPadTemplate rtpbin_send_rtcp_src_template =
GST_STATIC_PAD_TEMPLATE ("send_rtcp_src_%d",
static GstStaticPadTemplate rtpbin_rtcp_src_template =
GST_STATIC_PAD_TEMPLATE ("rtcp_src_%d",
GST_PAD_SRC,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("application/x-rtcp")
@ -112,6 +112,63 @@ enum
PROP_0
};
/* helper objects */
typedef struct
{
/* session id */
gint id;
/* the session element */
GstElement *session;
/* the SSRC demuxer */
GstElement *ssrcdemux;
/* the pads of the session */
GstPad *recv_rtp_sink;
GstPad *recv_rtcp_sink;
GstPad *send_rtp_sink;
GstPad *rtcp_src;
} GstRTPBinSession;
/* find a session with the given id */
static GstRTPBinSession *
find_session_by_id (GstRTPBin * rtpbin, gint id)
{
GList *walk;
for (walk = rtpbin->sessions; walk; walk = g_list_next (walk)) {
GstRTPBinSession *sess = (GstRTPBinSession *) walk->data;
if (sess->id == id)
return sess;
}
return NULL;
}
/* create a session with the given id */
static GstRTPBinSession *
create_session (GstRTPBin * rtpbin, gint id)
{
GstRTPBinSession *sess;
GstElement *elem;
if (!(elem = gst_element_factory_make ("rtpsession", NULL)))
goto no_session;
sess = g_new0 (GstRTPBinSession, 1);
sess->id = id;
sess->session = elem;
return sess;
/* ERRORS */
no_session:
{
g_warning ("rtpbin: could not create rtpsession element");
return NULL;
}
}
/* GObject vmethods */
static void gst_rtp_bin_finalize (GObject * object);
static void gst_rtp_bin_set_property (GObject * object, guint prop_id,
@ -147,7 +204,7 @@ gst_rtp_bin_base_init (gpointer klass)
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&rtpbin_recv_rtp_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&rtpbin_send_rtcp_src_template));
gst_static_pad_template_get (&rtpbin_rtcp_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&rtpbin_send_rtp_src_template));
@ -255,6 +312,267 @@ gst_rtp_bin_change_state (GstElement * element, GstStateChange transition)
return res;
}
/* Create a pad for receiving RTP for the session in @name
*/
static GstPad *
create_recv_rtp (GstRTPBin * rtpbin, GstPadTemplate * templ, const gchar * name)
{
GstPad *result;
guint sessid;
GstRTPBinSession *session;
/* first get the session number */
if (name == NULL || sscanf (name, "recv_rtp_sink_%d", &sessid) != 1)
goto no_name;
/* get or create session */
session = find_session_by_id (rtpbin, sessid);
if (!session) {
/* create session now */
session = create_session (rtpbin, sessid);
if (session == NULL)
goto create_error;
}
/* check if pad was requested */
if (session->recv_rtp_sink != NULL)
goto existed;
/* get recv_rtp pad and store */
session->recv_rtp_sink =
gst_element_get_request_pad (session->session, "recv_rtp_sink");
if (session->recv_rtp_sink == NULL)
goto pad_failed;
result =
gst_ghost_pad_new_from_template (name, session->recv_rtp_sink, templ);
gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
/* FIXME, get srcpad, link to SSRCDemux */
return result;
/* ERRORS */
no_name:
{
g_warning ("rtpbin: invalid name given");
return NULL;
}
create_error:
{
/* create_session already warned */
return NULL;
}
existed:
{
g_warning ("rtpbin: recv_rtp pad already requested for session %d", sessid);
return NULL;
}
pad_failed:
{
g_warning ("rtpbin: failed to get session pad");
return NULL;
}
}
/* Create a pad for receiving RTCP for the session in @name
*/
static GstPad *
create_recv_rtcp (GstRTPBin * rtpbin, GstPadTemplate * templ,
const gchar * name)
{
GstPad *result;
guint sessid;
GstRTPBinSession *session;
/* first get the session number */
if (name == NULL || sscanf (name, "recv_rtcp_sink_%d", &sessid) != 1)
goto no_name;
/* get the session, it must exist or we error */
session = find_session_by_id (rtpbin, sessid);
if (!session)
goto no_session;
/* check if pad was requested */
if (session->recv_rtcp_sink != NULL)
goto existed;
/* get recv_rtp pad and store */
session->recv_rtcp_sink =
gst_element_get_request_pad (session->session, "recv_rtcp_sink");
if (session->recv_rtcp_sink == NULL)
goto pad_failed;
result =
gst_ghost_pad_new_from_template (name, session->recv_rtcp_sink, templ);
gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
/* FIXME, get srcpad, link to SSRCDemux */
return result;
/* ERRORS */
no_name:
{
g_warning ("rtpbin: invalid name given");
return NULL;
}
no_session:
{
g_warning ("rtpbin: no session with id %d", sessid);
return NULL;
}
existed:
{
g_warning ("rtpbin: recv_rtcp pad already requested for session %d",
sessid);
return NULL;
}
pad_failed:
{
g_warning ("rtpbin: failed to get session pad");
return NULL;
}
}
/* Create a pad for sending RTP for the session in @name
*/
static GstPad *
create_send_rtp (GstRTPBin * rtpbin, GstPadTemplate * templ, const gchar * name)
{
GstPad *result, *srcpad, *srcghost;
gchar *gname;
guint sessid;
GstRTPBinSession *session;
GstElementClass *klass;
/* first get the session number */
if (name == NULL || sscanf (name, "send_rtp_sink_%d", &sessid) != 1)
goto no_name;
/* get or create session */
session = find_session_by_id (rtpbin, sessid);
if (!session) {
/* create session now */
session = create_session (rtpbin, sessid);
if (session == NULL)
goto create_error;
}
/* check if pad was requested */
if (session->send_rtp_sink != NULL)
goto existed;
/* get recv_rtp pad and store */
session->send_rtp_sink =
gst_element_get_request_pad (session->session, "send_rtp_sink");
if (session->send_rtp_sink == NULL)
goto pad_failed;
result =
gst_ghost_pad_new_from_template (name, session->send_rtp_sink, templ);
gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
/* get srcpad */
srcpad = gst_element_get_pad (session->session, "send_rtp_src");
if (srcpad == NULL)
goto no_srcpad;
/* ghost the new source pad */
klass = GST_ELEMENT_GET_CLASS (rtpbin);
gname = g_strdup_printf ("send_rtp_src_%d", sessid);
templ = gst_element_class_get_pad_template (klass, "send_rtp_src_%d");
srcghost =
gst_ghost_pad_new_from_template (gname, session->send_rtp_sink, templ);
gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), srcghost);
g_free (gname);
return result;
/* ERRORS */
no_name:
{
g_warning ("rtpbin: invalid name given");
return NULL;
}
create_error:
{
/* create_session already warned */
return NULL;
}
existed:
{
g_warning ("rtpbin: send_rtp pad already requested for session %d", sessid);
return NULL;
}
pad_failed:
{
g_warning ("rtpbin: failed to get session pad for session %d", sessid);
return NULL;
}
no_srcpad:
{
g_warning ("rtpbin: failed to get rtp source pad for session %d", sessid);
return NULL;
}
}
/* Create a pad for sending RTCP for the session in @name
*/
static GstPad *
create_rtcp (GstRTPBin * rtpbin, GstPadTemplate * templ, const gchar * name)
{
GstPad *result;
guint sessid;
GstRTPBinSession *session;
/* first get the session number */
if (name == NULL || sscanf (name, "send_rtp_sink_%d", &sessid) != 1)
goto no_name;
/* get or create session */
session = find_session_by_id (rtpbin, sessid);
if (!session)
goto no_session;
/* check if pad was requested */
if (session->rtcp_src != NULL)
goto existed;
/* get rtcp_src pad and store */
session->rtcp_src =
gst_element_get_request_pad (session->session, "rtcp_src");
if (session->rtcp_src == NULL)
goto pad_failed;
result = gst_ghost_pad_new_from_template (name, session->rtcp_src, templ);
gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
return result;
/* ERRORS */
no_name:
{
g_warning ("rtpbin: invalid name given");
return NULL;
}
no_session:
{
g_warning ("rtpbin: session with id %d does not exist", sessid);
return NULL;
}
existed:
{
g_warning ("rtpbin: rtcp_src pad already requested for session %d", sessid);
return NULL;
}
pad_failed:
{
g_warning ("rtpbin: failed to get rtcp pad for session %d", sessid);
return NULL;
}
}
/*
*/
static GstPad *
@ -263,6 +581,7 @@ gst_rtp_bin_request_new_pad (GstElement * element,
{
GstRTPBin *rtpbin;
GstElementClass *klass;
GstPad *result;
g_return_val_if_fail (templ != NULL, NULL);
g_return_val_if_fail (GST_IS_RTP_BIN (element), NULL);
@ -270,7 +589,28 @@ gst_rtp_bin_request_new_pad (GstElement * element,
rtpbin = GST_RTP_BIN (element);
klass = GST_ELEMENT_GET_CLASS (element);
return NULL;
/* figure out the template */
if (templ == gst_element_class_get_pad_template (klass, "recv_rtp_sink_%d")) {
result = create_recv_rtp (rtpbin, templ, name);
} else if (templ == gst_element_class_get_pad_template (klass,
"recv_rtcp_sink_%d")) {
result = create_recv_rtcp (rtpbin, templ, name);
} else if (templ == gst_element_class_get_pad_template (klass,
"send_rtp_sink_%d")) {
result = create_send_rtp (rtpbin, templ, name);
} else if (templ == gst_element_class_get_pad_template (klass, "rtcp_src_%d")) {
result = create_rtcp (rtpbin, templ, name);
} else
goto wrong_template;
return result;
/* ERRORS */
wrong_template:
{
g_warning ("rtpbin: this is not our template");
return NULL;
}
}
static void

View file

@ -40,8 +40,8 @@ typedef struct _GstRTPBinPrivate GstRTPBinPrivate;
struct _GstRTPBin {
GstBin element;
/* a list of streams from a client */
GList *streams;
/* a list of session */
GList *sessions;
/*< private >*/
GstRTPBinPrivate *priv;

View file

@ -27,10 +27,13 @@
* This element handles RTP data from one client. It accepts multiple RTP streams that
* should be synchronized together.
* </para>
* <para>
* Normally the SSRCs that map to the same CNAME (as given in the RTCP SDES messages)
* should be synchronized.
* </para>
* <title>Example pipelines</title>
* <para>
* <programlisting>
* gst-launch -v filesrc location=sine.ogg ! oggdemux ! vorbisdec ! audioconvert ! alsasink
* </programlisting>
* </para>
* </refsect2>