+++ /dev/null
-/*
- * Farsight2 - Farsight Funnel element
- *
- * Copyright 2007 Collabora Ltd.
- * @author: Olivier Crete <olivier.crete@collabora.co.uk>
- * Copyright 2007 Nokia Corp.
- *
- * rtsp-funnel.c: Simple Funnel element
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * SECTION:element-rtspfunnel
- * @short_description: N-to-1 simple funnel
- *
- * Takes packets from various input sinks into one output source
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "rtsp-funnel.h"
-
-GST_DEBUG_CATEGORY_STATIC (rtsp_funnel_debug);
-#define GST_CAT_DEFAULT rtsp_funnel_debug
-
-static const GstElementDetails rtsp_funnel_details =
-GST_ELEMENT_DETAILS ("Farsight Funnel pipe fitting",
- "Generic",
- "N-to-1 pipe fitting",
- "Olivier Crete <olivier.crete@collabora.co.uk>");
-
-static GstStaticPadTemplate funnel_sink_template =
-GST_STATIC_PAD_TEMPLATE ("sink%d",
- GST_PAD_SINK,
- GST_PAD_REQUEST,
- GST_STATIC_CAPS_ANY);
-
-static GstStaticPadTemplate funnel_src_template =
-GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS_ANY);
-
-
-static void
-_do_init (GType type)
-{
- GST_DEBUG_CATEGORY_INIT (rtsp_funnel_debug, "rtspfunnel", 0,
- "rtsp funnel element");
-}
-
-GST_BOILERPLATE_FULL (RTSPFunnel, rtsp_funnel, GstElement, GST_TYPE_ELEMENT,
- _do_init);
-
-
-
-static GstStateChangeReturn rtsp_funnel_change_state (GstElement * element,
- GstStateChange transition);
-
-static GstPad *rtsp_funnel_request_new_pad (GstElement * element,
- GstPadTemplate * templ, const gchar * name);
-static void rtsp_funnel_release_pad (GstElement * element, GstPad * pad);
-
-static GstFlowReturn rtsp_funnel_chain (GstPad * pad, GstBuffer * buffer);
-static gboolean rtsp_funnel_event (GstPad * pad, GstEvent * event);
-static gboolean rtsp_funnel_src_event (GstPad * pad, GstEvent * event);
-static GstCaps *rtsp_funnel_getcaps (GstPad * pad);
-
-
-typedef struct
-{
- GstSegment segment;
-} RTSPFunnelPadPrivate;
-
-static void
-rtsp_funnel_base_init (gpointer g_class)
-{
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
-
- gst_element_class_set_details (gstelement_class, &rtsp_funnel_details);
-
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&funnel_sink_template));
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&funnel_src_template));
-}
-
-
-static void
-rtsp_funnel_dispose (GObject * object)
-{
- GList *item;
-
-restart:
- for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
- GstPad *pad = GST_PAD (item->data);
-
- if (GST_PAD_IS_SINK (pad)) {
- gst_element_release_request_pad (GST_ELEMENT (object), pad);
- goto restart;
- }
- }
-
- G_OBJECT_CLASS (parent_class)->dispose (object);
-}
-
-static void
-rtsp_funnel_class_init (RTSPFunnelClass * klass)
-{
- GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
-
- gobject_class->dispose = GST_DEBUG_FUNCPTR (rtsp_funnel_dispose);
-
- gstelement_class->request_new_pad =
- GST_DEBUG_FUNCPTR (rtsp_funnel_request_new_pad);
- gstelement_class->release_pad = GST_DEBUG_FUNCPTR (rtsp_funnel_release_pad);
- gstelement_class->change_state = GST_DEBUG_FUNCPTR (rtsp_funnel_change_state);
-}
-
-static void
-rtsp_funnel_init (RTSPFunnel * funnel, RTSPFunnelClass * g_class)
-{
- funnel->srcpad = gst_pad_new_from_static_template (&funnel_src_template,
- "src");
- gst_pad_set_event_function (funnel->srcpad, rtsp_funnel_src_event);
- gst_pad_use_fixed_caps (funnel->srcpad);
- gst_element_add_pad (GST_ELEMENT (funnel), funnel->srcpad);
-}
-
-
-static GstPad *
-rtsp_funnel_request_new_pad (GstElement * element, GstPadTemplate * templ,
- const gchar * name)
-{
- GstPad *sinkpad;
- RTSPFunnelPadPrivate *priv = g_slice_alloc0 (sizeof (RTSPFunnelPadPrivate));
-
- GST_DEBUG_OBJECT (element, "requesting pad");
-
- sinkpad = gst_pad_new_from_template (templ, name);
-
- gst_pad_set_chain_function (sinkpad, GST_DEBUG_FUNCPTR (rtsp_funnel_chain));
- gst_pad_set_event_function (sinkpad, GST_DEBUG_FUNCPTR (rtsp_funnel_event));
- gst_pad_set_getcaps_function (sinkpad,
- GST_DEBUG_FUNCPTR (rtsp_funnel_getcaps));
-
- gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
- gst_pad_set_element_private (sinkpad, priv);
-
- gst_pad_set_active (sinkpad, TRUE);
-
- gst_element_add_pad (element, sinkpad);
-
- return sinkpad;
-}
-
-static void
-rtsp_funnel_release_pad (GstElement * element, GstPad * pad)
-{
- RTSPFunnel *funnel = RTSP_FUNNEL (element);
- RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
-
- GST_DEBUG_OBJECT (funnel, "releasing pad");
-
- gst_pad_set_active (pad, FALSE);
-
- if (priv)
- g_slice_free1 (sizeof (RTSPFunnelPadPrivate), priv);
-
- gst_element_remove_pad (GST_ELEMENT_CAST (funnel), pad);
-}
-
-static GstCaps *
-rtsp_funnel_getcaps (GstPad * pad)
-{
- RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
- GstCaps *caps;
-
- caps = gst_pad_peer_get_caps (funnel->srcpad);
- if (caps == NULL)
- caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
-
- gst_object_unref (funnel);
-
- return caps;
-}
-
-static GstFlowReturn
-rtsp_funnel_chain (GstPad * pad, GstBuffer * buffer)
-{
- GstFlowReturn res;
- RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
- RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
- GstEvent *event = NULL;
- GstClockTime newts;
- GstCaps *padcaps;
-
- GST_DEBUG_OBJECT (funnel, "received buffer %p", buffer);
-
- GST_OBJECT_LOCK (funnel);
- if (priv->segment.format == GST_FORMAT_UNDEFINED) {
- GST_WARNING_OBJECT (funnel, "Got buffer without segment,"
- " setting segment [0,inf[");
- gst_segment_set_newsegment_full (&priv->segment, FALSE, 1.0, 1.0,
- GST_FORMAT_TIME, 0, -1, 0);
- }
-
- if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buffer)))
- gst_segment_set_last_stop (&priv->segment, priv->segment.format,
- GST_BUFFER_TIMESTAMP (buffer));
-
- newts = gst_segment_to_running_time (&priv->segment,
- priv->segment.format, GST_BUFFER_TIMESTAMP (buffer));
- if (newts != GST_BUFFER_TIMESTAMP (buffer)) {
- buffer = gst_buffer_make_metadata_writable (buffer);
- GST_BUFFER_TIMESTAMP (buffer) = newts;
- }
-
- if (!funnel->has_segment) {
- event = gst_event_new_new_segment_full (FALSE, 1.0, 1.0, GST_FORMAT_TIME,
- 0, -1, 0);
- funnel->has_segment = TRUE;
- }
- GST_OBJECT_UNLOCK (funnel);
-
- if (event) {
- if (!gst_pad_push_event (funnel->srcpad, event)) {
- GST_WARNING_OBJECT (funnel, "Could not push out newsegment event");
- res = GST_FLOW_ERROR;
- goto out;
- }
- }
-
-
- GST_OBJECT_LOCK (pad);
- padcaps = GST_PAD_CAPS (funnel->srcpad);
- GST_OBJECT_UNLOCK (pad);
-
- if (GST_BUFFER_CAPS (buffer) && GST_BUFFER_CAPS (buffer) != padcaps) {
- if (!gst_pad_set_caps (funnel->srcpad, GST_BUFFER_CAPS (buffer))) {
- res = GST_FLOW_NOT_NEGOTIATED;
- goto out;
- }
- }
-
- res = gst_pad_push (funnel->srcpad, buffer);
-
- GST_LOG_OBJECT (funnel, "handled buffer %s", gst_flow_get_name (res));
-
-out:
- gst_object_unref (funnel);
-
- return res;
-}
-
-static gboolean
-rtsp_funnel_event (GstPad * pad, GstEvent * event)
-{
- RTSPFunnel *funnel = RTSP_FUNNEL (gst_pad_get_parent (pad));
- RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
- gboolean forward = TRUE;
- gboolean res = TRUE;
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_NEWSEGMENT:
- {
- gboolean update;
- gdouble rate, arate;
- GstFormat format;
- gint64 start;
- gint64 stop;
- gint64 time;
-
- gst_event_parse_new_segment_full (event, &update, &rate, &arate,
- &format, &start, &stop, &time);
-
-
- GST_OBJECT_LOCK (funnel);
- gst_segment_set_newsegment_full (&priv->segment, update, rate, arate,
- format, start, stop, time);
- GST_OBJECT_UNLOCK (funnel);
-
- forward = FALSE;
- gst_event_unref (event);
- }
- break;
- case GST_EVENT_FLUSH_STOP:
- {
- GST_OBJECT_LOCK (funnel);
- gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
- GST_OBJECT_UNLOCK (funnel);
- }
- break;
- default:
- break;
- }
-
-
- if (forward)
- res = gst_pad_push_event (funnel->srcpad, event);
-
- gst_object_unref (funnel);
-
- return res;
-}
-
-static gboolean
-rtsp_funnel_src_event (GstPad * pad, GstEvent * event)
-{
- GstElement *funnel;
- GstIterator *iter;
- GstPad *sinkpad;
- gboolean result = FALSE;
- gboolean done = FALSE;
-
- funnel = gst_pad_get_parent_element (pad);
- g_return_val_if_fail (funnel != NULL, FALSE);
-
- iter = gst_element_iterate_sink_pads (funnel);
-
- while (!done) {
- switch (gst_iterator_next (iter, (gpointer) & sinkpad)) {
- case GST_ITERATOR_OK:
- gst_event_ref (event);
- result |= gst_pad_push_event (sinkpad, event);
- gst_object_unref (sinkpad);
- break;
- case GST_ITERATOR_RESYNC:
- gst_iterator_resync (iter);
- result = FALSE;
- break;
- case GST_ITERATOR_ERROR:
- GST_WARNING_OBJECT (funnel, "Error iterating sinkpads");
- case GST_ITERATOR_DONE:
- done = TRUE;
- break;
- }
- }
- gst_iterator_free (iter);
- gst_object_unref (funnel);
- gst_event_unref (event);
-
- return result;
-}
-
-static void
-reset_pad (gpointer data, gpointer user_data)
-{
- GstPad *pad = data;
- RTSPFunnelPadPrivate *priv = gst_pad_get_element_private (pad);
-
- GST_OBJECT_LOCK (pad);
- gst_segment_init (&priv->segment, GST_FORMAT_UNDEFINED);
- GST_OBJECT_UNLOCK (pad);
- gst_object_unref (pad);
-}
-
-static GstStateChangeReturn
-rtsp_funnel_change_state (GstElement * element, GstStateChange transition)
-{
- RTSPFunnel *funnel = RTSP_FUNNEL (element);
- GstStateChangeReturn ret;
-
- switch (transition) {
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- {
- GstIterator *iter = gst_element_iterate_sink_pads (element);
- GstIteratorResult res;
-
- do {
- res = gst_iterator_foreach (iter, reset_pad, NULL);
- } while (res == GST_ITERATOR_RESYNC);
-
- gst_iterator_free (iter);
-
- if (res == GST_ITERATOR_ERROR)
- return GST_STATE_CHANGE_FAILURE;
-
- GST_OBJECT_LOCK (funnel);
- funnel->has_segment = FALSE;
- GST_OBJECT_UNLOCK (funnel);
- }
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
- return ret;
-}