2 * Farsight2 - Farsight Funnel element
4 * Copyright 2007 Collabora Ltd.
5 * @author: Olivier Crete <olivier.crete@collabora.co.uk>
6 * Copyright 2007 Nokia Corp.
8 * rtsp-funnel.c: Simple Funnel element
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 * SECTION:element-rtspfunnel
27 * @short_description: N-to-1 simple funnel
29 * Takes packets from various input sinks into one output source
36 #include "rtsp-funnel.h"
38 GST_DEBUG_CATEGORY_STATIC (rtsp_funnel_debug);
39 #define GST_CAT_DEFAULT rtsp_funnel_debug
41 static const GstElementDetails rtsp_funnel_details =
42 GST_ELEMENT_DETAILS ("Farsight Funnel pipe fitting",
44 "N-to-1 pipe fitting",
45 "Olivier Crete <olivier.crete@collabora.co.uk>");
47 static GstStaticPadTemplate funnel_sink_template =
48 GST_STATIC_PAD_TEMPLATE ("sink%d",
53 static GstStaticPadTemplate funnel_src_template =
54 GST_STATIC_PAD_TEMPLATE ("src",
63 GST_DEBUG_CATEGORY_INIT (rtsp_funnel_debug, "rtspfunnel", 0,
64 "rtsp funnel element");
67 GST_BOILERPLATE_FULL (RTSPFunnel, rtsp_funnel, GstElement, GST_TYPE_ELEMENT,
72 static GstStateChangeReturn rtsp_funnel_change_state (GstElement * element,
73 GstStateChange transition);
75 static GstPad *rtsp_funnel_request_new_pad (GstElement * element,
76 GstPadTemplate * templ, const gchar * name);
77 static void rtsp_funnel_release_pad (GstElement * element, GstPad * pad);
79 static GstFlowReturn rtsp_funnel_chain (GstPad * pad, GstBuffer * buffer);
80 static gboolean rtsp_funnel_event (GstPad * pad, GstEvent * event);
81 static gboolean rtsp_funnel_src_event (GstPad * pad, GstEvent * event);
82 static GstCaps *rtsp_funnel_getcaps (GstPad * pad);
88 } RTSPFunnelPadPrivate;
91 rtsp_funnel_base_init (gpointer g_class)
93 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
95 gst_element_class_set_details (gstelement_class, &rtsp_funnel_details);
97 gst_element_class_add_pad_template (gstelement_class,
98 gst_static_pad_template_get (&funnel_sink_template));
99 gst_element_class_add_pad_template (gstelement_class,
100 gst_static_pad_template_get (&funnel_src_template));
105 rtsp_funnel_dispose (GObject * object)
110 for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
111 GstPad *pad = GST_PAD (item->data);
113 if (GST_PAD_IS_SINK (pad)) {
114 gst_element_release_request_pad (GST_ELEMENT (object), pad);
119 G_OBJECT_CLASS (parent_class)->dispose (object);
123 rtsp_funnel_class_init (RTSPFunnelClass * klass)
125 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
126 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
128 gobject_class->dispose = GST_DEBUG_FUNCPTR (rtsp_funnel_dispose);
130 gstelement_class->request_new_pad =
131 GST_DEBUG_FUNCPTR (rtsp_funnel_request_new_pad);
132 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (rtsp_funnel_release_pad);
133 gstelement_class->change_state = GST_DEBUG_FUNCPTR (rtsp_funnel_change_state);
137 rtsp_funnel_init (RTSPFunnel * funnel, RTSPFunnelClass * g_class)
139 funnel->srcpad = gst_pad_new_from_static_template (&funnel_src_template,
141 gst_pad_set_event_function (funnel->srcpad, rtsp_funnel_src_event);
142 gst_pad_use_fixed_caps (funnel->srcpad);
143 gst_element_add_pad (GST_ELEMENT (funnel), funnel->srcpad);
148 rtsp_funnel_request_new_pad (GstElement * element, GstPadTemplate * templ,
152 RTSPFunnelPadPrivate *priv = g_slice_alloc0 (sizeof (RTSPFunnelPadPrivate));
154 GST_DEBUG_OBJECT (element, "requesting pad");
156 sinkpad = gst_pad_new_from_template (templ, name);
158 gst_pad_set_chain_function (sinkpad, GST_DEBUG_FUNCPTR (rtsp_funnel_chain));
159 gst_pad_set_event_function (sinkpad, GST_DEBUG_FUNCPTR (rtsp_funnel_event));
160 gst_pad_set_getcaps_function (sinkpad,
161 GST_DEBUG_FUNCPTR (rtsp_funnel_getcaps));
163 gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
164 gst_pad_set_element_private (sinkpad, priv);
166 gst_pad_set_active (sinkpad, TRUE);
168 gst_element_add_pad (element, sinkpad);
174 rtsp_funnel_release_pad (GstElement * element, GstPad * pad)
176 RTSPFunnel *funnel = RTSP_FUNNEL (element);
177 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
179 GST_DEBUG_OBJECT (funnel, "releasing pad");
181 gst_pad_set_active (pad, FALSE);
184 g_slice_free1 (sizeof (RTSPFunnelPadPrivate), priv);
186 gst_element_remove_pad (GST_ELEMENT_CAST (funnel), pad);
190 rtsp_funnel_getcaps (GstPad * pad)
192 RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
195 caps = gst_pad_peer_get_caps (funnel->srcpad);
197 caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
199 gst_object_unref (funnel);
205 rtsp_funnel_chain (GstPad * pad, GstBuffer * buffer)
208 RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
209 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
210 GstEvent *event = NULL;
214 GST_DEBUG_OBJECT (funnel, "received buffer %p", buffer);
216 GST_OBJECT_LOCK (funnel);
217 if (priv->segment.format == GST_FORMAT_UNDEFINED) {
218 GST_WARNING_OBJECT (funnel, "Got buffer without segment,"
219 " setting segment [0,inf[");
220 gst_segment_set_newsegment_full (&priv->segment, FALSE, 1.0, 1.0,
221 GST_FORMAT_TIME, 0, -1, 0);
224 if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buffer)))
225 gst_segment_set_last_stop (&priv->segment, priv->segment.format,
226 GST_BUFFER_TIMESTAMP (buffer));
228 newts = gst_segment_to_running_time (&priv->segment,
229 priv->segment.format, GST_BUFFER_TIMESTAMP (buffer));
230 if (newts != GST_BUFFER_TIMESTAMP (buffer)) {
231 buffer = gst_buffer_make_metadata_writable (buffer);
232 GST_BUFFER_TIMESTAMP (buffer) = newts;
235 if (!funnel->has_segment) {
236 event = gst_event_new_new_segment_full (FALSE, 1.0, 1.0, GST_FORMAT_TIME,
238 funnel->has_segment = TRUE;
240 GST_OBJECT_UNLOCK (funnel);
243 if (!gst_pad_push_event (funnel->srcpad, event)) {
244 GST_WARNING_OBJECT (funnel, "Could not push out newsegment event");
245 res = GST_FLOW_ERROR;
251 GST_OBJECT_LOCK (pad);
252 padcaps = GST_PAD_CAPS (funnel->srcpad);
253 GST_OBJECT_UNLOCK (pad);
255 if (GST_BUFFER_CAPS (buffer) && GST_BUFFER_CAPS (buffer) != padcaps) {
256 if (!gst_pad_set_caps (funnel->srcpad, GST_BUFFER_CAPS (buffer))) {
257 res = GST_FLOW_NOT_NEGOTIATED;
262 res = gst_pad_push (funnel->srcpad, buffer);
264 GST_LOG_OBJECT (funnel, "handled buffer %s", gst_flow_get_name (res));
267 gst_object_unref (funnel);
273 rtsp_funnel_event (GstPad * pad, GstEvent * event)
275 RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
276 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
277 gboolean forward = TRUE;
280 switch (GST_EVENT_TYPE (event)) {
281 case GST_EVENT_NEWSEGMENT:
290 gst_event_parse_new_segment_full (event, &update, &rate, &arate,
291 &format, &start, &stop, &time);
294 GST_OBJECT_LOCK (funnel);
295 gst_segment_set_newsegment_full (&priv->segment, update, rate, arate,
296 format, start, stop, time);
297 GST_OBJECT_UNLOCK (funnel);
300 gst_event_unref (event);
303 case GST_EVENT_FLUSH_STOP:
305 GST_OBJECT_LOCK (funnel);
306 gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
307 GST_OBJECT_UNLOCK (funnel);
316 res = gst_pad_push_event (funnel->srcpad, event);
318 gst_object_unref (funnel);
324 rtsp_funnel_src_event (GstPad * pad, GstEvent * event)
329 gboolean result = FALSE;
330 gboolean done = FALSE;
332 funnel = gst_pad_get_parent_element (pad);
333 g_return_val_if_fail (funnel != NULL, FALSE);
335 iter = gst_element_iterate_sink_pads (funnel);
338 switch (gst_iterator_next (iter, (gpointer) & sinkpad)) {
339 case GST_ITERATOR_OK:
340 gst_event_ref (event);
341 result |= gst_pad_push_event (sinkpad, event);
342 gst_object_unref (sinkpad);
344 case GST_ITERATOR_RESYNC:
345 gst_iterator_resync (iter);
348 case GST_ITERATOR_ERROR:
349 GST_WARNING_OBJECT (funnel, "Error iterating sinkpads");
350 case GST_ITERATOR_DONE:
355 gst_iterator_free (iter);
356 gst_object_unref (funnel);
357 gst_event_unref (event);
363 reset_pad (gpointer data, gpointer user_data)
366 RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
368 GST_OBJECT_LOCK (pad);
369 gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
370 GST_OBJECT_UNLOCK (pad);
371 gst_object_unref (pad);
374 static GstStateChangeReturn
375 rtsp_funnel_change_state (GstElement * element, GstStateChange transition)
377 RTSPFunnel *funnel = RTSP_FUNNEL (element);
378 GstStateChangeReturn ret;
380 switch (transition) {
381 case GST_STATE_CHANGE_READY_TO_PAUSED:
383 GstIterator *iter = gst_element_iterate_sink_pads (element);
384 GstIteratorResult res;
387 res = gst_iterator_foreach (iter, reset_pad, NULL);
388 } while (res == GST_ITERATOR_RESYNC);
390 gst_iterator_free (iter);
392 if (res == GST_ITERATOR_ERROR)
393 return GST_STATE_CHANGE_FAILURE;
395 GST_OBJECT_LOCK (funnel);
396 funnel->has_segment = FALSE;
397 GST_OBJECT_UNLOCK (funnel);
404 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);