2 * Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
4 * Copyright (c) 2012, 2013 Samsung Electronics Co., Ltd.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
22 * * Modifications by Samsung Electronics Co., Ltd.
24 * 1. Applied Miracast WFD Server function
28 * SECTION:element-rtspfunnel
29 * @short_description: N-to-1 simple funnel
31 * Takes packets from various input sinks into one output source
38 #include "rtsp-funnel.h"
40 GST_DEBUG_CATEGORY_STATIC (rtsp_funnel_debug);
41 #define GST_CAT_DEFAULT rtsp_funnel_debug
43 static const GstElementDetails rtsp_funnel_details =
44 GST_ELEMENT_DETAILS ("Farsight Funnel pipe fitting",
46 "N-to-1 pipe fitting",
47 "Olivier Crete <olivier.crete@collabora.co.uk>");
49 static GstStaticPadTemplate funnel_sink_template =
50 GST_STATIC_PAD_TEMPLATE ("sink%d",
55 static GstStaticPadTemplate funnel_src_template =
56 GST_STATIC_PAD_TEMPLATE ("src",
65 GST_DEBUG_CATEGORY_INIT (rtsp_funnel_debug, "rtspfunnel", 0,
66 "rtsp funnel element");
69 GST_BOILERPLATE_FULL (RTSPFunnel, rtsp_funnel, GstElement, GST_TYPE_ELEMENT,
74 static GstStateChangeReturn rtsp_funnel_change_state (GstElement * element,
75 GstStateChange transition);
77 static GstPad *rtsp_funnel_request_new_pad (GstElement * element,
78 GstPadTemplate * templ, const gchar * name);
79 static void rtsp_funnel_release_pad (GstElement * element, GstPad * pad);
81 static GstFlowReturn rtsp_funnel_chain (GstPad * pad, GstBuffer * buffer);
82 static gboolean rtsp_funnel_event (GstPad * pad, GstEvent * event);
83 static gboolean rtsp_funnel_src_event (GstPad * pad, GstEvent * event);
84 static GstCaps *rtsp_funnel_getcaps (GstPad * pad);
90 } RTSPFunnelPadPrivate;
93 rtsp_funnel_base_init (gpointer g_class)
95 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
97 gst_element_class_set_details (gstelement_class, &rtsp_funnel_details);
99 gst_element_class_add_pad_template (gstelement_class,
100 gst_static_pad_template_get (&funnel_sink_template));
101 gst_element_class_add_pad_template (gstelement_class,
102 gst_static_pad_template_get (&funnel_src_template));
107 rtsp_funnel_dispose (GObject * object)
112 for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
113 GstPad *pad = GST_PAD (item->data);
115 if (GST_PAD_IS_SINK (pad)) {
116 gst_element_release_request_pad (GST_ELEMENT (object), pad);
121 G_OBJECT_CLASS (parent_class)->dispose (object);
125 rtsp_funnel_class_init (RTSPFunnelClass * klass)
127 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
128 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
130 gobject_class->dispose = GST_DEBUG_FUNCPTR (rtsp_funnel_dispose);
132 gstelement_class->request_new_pad =
133 GST_DEBUG_FUNCPTR (rtsp_funnel_request_new_pad);
134 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (rtsp_funnel_release_pad);
135 gstelement_class->change_state = GST_DEBUG_FUNCPTR (rtsp_funnel_change_state);
139 rtsp_funnel_init (RTSPFunnel * funnel, RTSPFunnelClass * g_class)
141 funnel->srcpad = gst_pad_new_from_static_template (&funnel_src_template,
143 gst_pad_set_event_function (funnel->srcpad, rtsp_funnel_src_event);
144 gst_pad_use_fixed_caps (funnel->srcpad);
145 gst_element_add_pad (GST_ELEMENT (funnel), funnel->srcpad);
150 rtsp_funnel_request_new_pad (GstElement * element, GstPadTemplate * templ,
154 RTSPFunnelPadPrivate *priv = g_slice_alloc0 (sizeof (RTSPFunnelPadPrivate));
156 GST_DEBUG_OBJECT (element, "requesting pad");
158 sinkpad = gst_pad_new_from_template (templ, name);
160 gst_pad_set_chain_function (sinkpad, GST_DEBUG_FUNCPTR (rtsp_funnel_chain));
161 gst_pad_set_event_function (sinkpad, GST_DEBUG_FUNCPTR (rtsp_funnel_event));
162 gst_pad_set_getcaps_function (sinkpad,
163 GST_DEBUG_FUNCPTR (rtsp_funnel_getcaps));
165 gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
166 gst_pad_set_element_private (sinkpad, priv);
168 gst_pad_set_active (sinkpad, TRUE);
170 gst_element_add_pad (element, sinkpad);
176 rtsp_funnel_release_pad (GstElement * element, GstPad * pad)
178 RTSPFunnel *funnel = RTSP_FUNNEL (element);
179 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
181 GST_DEBUG_OBJECT (funnel, "releasing pad");
183 gst_pad_set_active (pad, FALSE);
186 g_slice_free1 (sizeof (RTSPFunnelPadPrivate), priv);
188 gst_element_remove_pad (GST_ELEMENT_CAST (funnel), pad);
192 rtsp_funnel_getcaps (GstPad * pad)
194 RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
197 caps = gst_pad_peer_get_caps (funnel->srcpad);
199 caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
201 gst_object_unref (funnel);
207 rtsp_funnel_chain (GstPad * pad, GstBuffer * buffer)
210 RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
211 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
212 GstEvent *event = NULL;
216 GST_DEBUG_OBJECT (funnel, "received buffer %p", buffer);
218 GST_OBJECT_LOCK (funnel);
219 if (priv->segment.format == GST_FORMAT_UNDEFINED) {
220 GST_WARNING_OBJECT (funnel, "Got buffer without segment,"
221 " setting segment [0,inf[");
222 gst_segment_set_newsegment_full (&priv->segment, FALSE, 1.0, 1.0,
223 GST_FORMAT_TIME, 0, -1, 0);
226 if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buffer)))
227 gst_segment_set_last_stop (&priv->segment, priv->segment.format,
228 GST_BUFFER_TIMESTAMP (buffer));
230 newts = gst_segment_to_running_time (&priv->segment,
231 priv->segment.format, GST_BUFFER_TIMESTAMP (buffer));
232 if (newts != GST_BUFFER_TIMESTAMP (buffer)) {
233 buffer = gst_buffer_make_metadata_writable (buffer);
234 GST_BUFFER_TIMESTAMP (buffer) = newts;
237 if (!funnel->has_segment) {
238 event = gst_event_new_new_segment_full (FALSE, 1.0, 1.0, GST_FORMAT_TIME,
240 funnel->has_segment = TRUE;
242 GST_OBJECT_UNLOCK (funnel);
245 if (!gst_pad_push_event (funnel->srcpad, event)) {
246 GST_WARNING_OBJECT (funnel, "Could not push out newsegment event");
247 res = GST_FLOW_ERROR;
253 GST_OBJECT_LOCK (pad);
254 padcaps = GST_PAD_CAPS (funnel->srcpad);
255 GST_OBJECT_UNLOCK (pad);
257 if (GST_BUFFER_CAPS (buffer) && GST_BUFFER_CAPS (buffer) != padcaps) {
258 if (!gst_pad_set_caps (funnel->srcpad, GST_BUFFER_CAPS (buffer))) {
259 res = GST_FLOW_NOT_NEGOTIATED;
264 res = gst_pad_push (funnel->srcpad, buffer);
266 GST_LOG_OBJECT (funnel, "handled buffer %s", gst_flow_get_name (res));
269 gst_object_unref (funnel);
275 rtsp_funnel_event (GstPad * pad, GstEvent * event)
277 RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
278 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
279 gboolean forward = TRUE;
282 switch (GST_EVENT_TYPE (event)) {
283 case GST_EVENT_NEWSEGMENT:
292 gst_event_parse_new_segment_full (event, &update, &rate, &arate,
293 &format, &start, &stop, &time);
296 GST_OBJECT_LOCK (funnel);
297 gst_segment_set_newsegment_full (&priv->segment, update, rate, arate,
298 format, start, stop, time);
299 GST_OBJECT_UNLOCK (funnel);
302 gst_event_unref (event);
305 case GST_EVENT_FLUSH_STOP:
307 GST_OBJECT_LOCK (funnel);
308 gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
309 GST_OBJECT_UNLOCK (funnel);
318 res = gst_pad_push_event (funnel->srcpad, event);
320 gst_object_unref (funnel);
326 rtsp_funnel_src_event (GstPad * pad, GstEvent * event)
331 gboolean result = FALSE;
332 gboolean done = FALSE;
334 funnel = gst_pad_get_parent_element (pad);
335 g_return_val_if_fail (funnel != NULL, FALSE);
337 iter = gst_element_iterate_sink_pads (funnel);
340 switch (gst_iterator_next (iter, (gpointer) & sinkpad)) {
341 case GST_ITERATOR_OK:
342 gst_event_ref (event);
343 result |= gst_pad_push_event (sinkpad, event);
344 gst_object_unref (sinkpad);
346 case GST_ITERATOR_RESYNC:
347 gst_iterator_resync (iter);
350 case GST_ITERATOR_ERROR:
351 GST_WARNING_OBJECT (funnel, "Error iterating sinkpads");
352 case GST_ITERATOR_DONE:
357 gst_iterator_free (iter);
358 gst_object_unref (funnel);
359 gst_event_unref (event);
365 reset_pad (gpointer data, gpointer user_data)
368 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
370 GST_OBJECT_LOCK (pad);
371 gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
372 GST_OBJECT_UNLOCK (pad);
373 gst_object_unref (pad);
376 static GstStateChangeReturn
377 rtsp_funnel_change_state (GstElement * element, GstStateChange transition)
379 RTSPFunnel *funnel = RTSP_FUNNEL (element);
380 GstStateChangeReturn ret;
382 switch (transition) {
383 case GST_STATE_CHANGE_READY_TO_PAUSED:
385 GstIterator *iter = gst_element_iterate_sink_pads (element);
386 GstIteratorResult res;
389 res = gst_iterator_foreach (iter, reset_pad, NULL);
390 } while (res == GST_ITERATOR_RESYNC);
392 gst_iterator_free (iter);
394 if (res == GST_ITERATOR_ERROR)
395 return GST_STATE_CHANGE_FAILURE;
397 GST_OBJECT_LOCK (funnel);
398 funnel->has_segment = FALSE;
399 GST_OBJECT_UNLOCK (funnel);
406 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);