mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-29 21:21:12 +00:00
066b515985
Save the value of the pad's got_eos in gst_funnel_release_pad, before calling gst_element_remove_pad. This is because gst_element_remove_pad may free the pad. https://bugzilla.gnome.org/show_bug.cgi?id=678017
482 lines
13 KiB
C
482 lines
13 KiB
C
/*
|
|
* GStreamer Funnel element
|
|
*
|
|
* Copyright 2007 Collabora Ltd.
|
|
* @author: Olivier Crete <olivier.crete@collabora.co.uk>
|
|
* Copyright 2007 Nokia Corp.
|
|
*
|
|
* gstfunnel.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-funnel
|
|
*
|
|
* Takes packets from various input sinks into one output source.
|
|
*
|
|
* funnel always outputs a single, open ended segment from
|
|
* 0 with in %GST_FORMAT_TIME and outputs the buffers of the
|
|
* different sinkpads with timestamps that are set to the
|
|
* running time for that stream. funnel does not synchronize
|
|
* the different input streams but simply forwards all buffers
|
|
* immediately when they arrive.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstfunnel.h"
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (gst_funnel_debug);
|
|
#define GST_CAT_DEFAULT gst_funnel_debug
|
|
|
|
GType gst_funnel_pad_get_type (void);
|
|
#define GST_TYPE_FUNNEL_PAD \
|
|
(gst_funnel_pad_get_type())
|
|
#define GST_FUNNEL_PAD(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_FUNNEL_PAD, GstFunnelPad))
|
|
#define GST_FUNNEL_PAD_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_FUNNEL_PAD, GstFunnelPadClass))
|
|
#define GST_IS_FUNNEL_PAD(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_FUNNEL_PAD))
|
|
#define GST_IS_FUNNEL_PAD_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_FUNNEL_PAD))
|
|
#define GST_FUNNEL_PAD_CAST(obj) \
|
|
((GstFunnelPad *)(obj))
|
|
|
|
typedef struct _GstFunnelPad GstFunnelPad;
|
|
typedef struct _GstFunnelPadClass GstFunnelPadClass;
|
|
|
|
struct _GstFunnelPad
|
|
{
|
|
GstPad parent;
|
|
|
|
GstSegment segment;
|
|
gboolean got_eos;
|
|
};
|
|
|
|
struct _GstFunnelPadClass
|
|
{
|
|
GstPadClass parent;
|
|
};
|
|
|
|
G_DEFINE_TYPE (GstFunnelPad, gst_funnel_pad, GST_TYPE_PAD);
|
|
|
|
static void
|
|
gst_funnel_pad_class_init (GstFunnelPadClass * klass)
|
|
{
|
|
}
|
|
|
|
static void
|
|
gst_funnel_pad_reset (GstFunnelPad * pad)
|
|
{
|
|
gst_segment_init (&pad->segment, GST_FORMAT_UNDEFINED);
|
|
pad->got_eos = FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_funnel_pad_init (GstFunnelPad * pad)
|
|
{
|
|
gst_funnel_pad_reset (pad);
|
|
}
|
|
|
|
static GstStaticPadTemplate funnel_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink_%u",
|
|
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);
|
|
|
|
#define _do_init \
|
|
GST_DEBUG_CATEGORY_INIT (gst_funnel_debug, "funnel", 0, "funnel element");
|
|
#define gst_funnel_parent_class parent_class
|
|
G_DEFINE_TYPE_WITH_CODE (GstFunnel, gst_funnel, GST_TYPE_ELEMENT, _do_init);
|
|
|
|
static GstStateChangeReturn gst_funnel_change_state (GstElement * element,
|
|
GstStateChange transition);
|
|
static GstPad *gst_funnel_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
|
|
static void gst_funnel_release_pad (GstElement * element, GstPad * pad);
|
|
|
|
static GstFlowReturn gst_funnel_sink_chain (GstPad * pad, GstObject * parent,
|
|
GstBuffer * buffer);
|
|
static gboolean gst_funnel_sink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event);
|
|
static gboolean gst_funnel_sink_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query);
|
|
|
|
static gboolean gst_funnel_src_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event);
|
|
|
|
static void
|
|
gst_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
|
|
gst_funnel_class_init (GstFunnelClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
|
|
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_funnel_dispose);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"Funnel pipe fitting", "Generic", "N-to-1 pipe fitting",
|
|
"Olivier Crete <olivier.crete@collabora.co.uk>");
|
|
|
|
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));
|
|
|
|
gstelement_class->request_new_pad =
|
|
GST_DEBUG_FUNCPTR (gst_funnel_request_new_pad);
|
|
gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_funnel_release_pad);
|
|
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_funnel_change_state);
|
|
}
|
|
|
|
static void
|
|
gst_funnel_init (GstFunnel * funnel)
|
|
{
|
|
funnel->srcpad = gst_pad_new_from_static_template (&funnel_src_template,
|
|
"src");
|
|
gst_pad_set_event_function (funnel->srcpad, gst_funnel_src_event);
|
|
gst_pad_use_fixed_caps (funnel->srcpad);
|
|
gst_element_add_pad (GST_ELEMENT (funnel), funnel->srcpad);
|
|
}
|
|
|
|
static GstPad *
|
|
gst_funnel_request_new_pad (GstElement * element, GstPadTemplate * templ,
|
|
const gchar * name, const GstCaps * caps)
|
|
{
|
|
GstPad *sinkpad;
|
|
|
|
GST_DEBUG_OBJECT (element, "requesting pad");
|
|
|
|
sinkpad = GST_PAD_CAST (g_object_new (GST_TYPE_FUNNEL_PAD,
|
|
"name", name, "direction", templ->direction, "template", templ,
|
|
NULL));
|
|
|
|
gst_pad_set_chain_function (sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_funnel_sink_chain));
|
|
gst_pad_set_event_function (sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_funnel_sink_event));
|
|
gst_pad_set_query_function (sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_funnel_sink_query));
|
|
|
|
gst_pad_set_active (sinkpad, TRUE);
|
|
|
|
gst_element_add_pad (element, sinkpad);
|
|
|
|
return sinkpad;
|
|
}
|
|
|
|
static gboolean
|
|
gst_funnel_all_sinkpads_eos_unlocked (GstFunnel * funnel)
|
|
{
|
|
GstElement *element = GST_ELEMENT_CAST (funnel);
|
|
GList *item;
|
|
|
|
if (element->numsinkpads == 0)
|
|
return FALSE;
|
|
|
|
for (item = element->sinkpads; item != NULL; item = g_list_next (item)) {
|
|
GstFunnelPad *sinkpad = item->data;
|
|
|
|
if (!sinkpad->got_eos)
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_funnel_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstFunnel *funnel = GST_FUNNEL (element);
|
|
GstFunnelPad *fpad = GST_FUNNEL_PAD_CAST (pad);
|
|
gboolean got_eos;
|
|
gboolean send_eos = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (funnel, "releasing pad");
|
|
|
|
gst_pad_set_active (pad, FALSE);
|
|
|
|
got_eos = fpad->got_eos;
|
|
|
|
gst_element_remove_pad (GST_ELEMENT_CAST (funnel), pad);
|
|
|
|
GST_OBJECT_LOCK (funnel);
|
|
if (!got_eos && gst_funnel_all_sinkpads_eos_unlocked (funnel)) {
|
|
GST_DEBUG_OBJECT (funnel, "Pad removed. All others are EOS. Sending EOS");
|
|
send_eos = TRUE;
|
|
}
|
|
GST_OBJECT_UNLOCK (funnel);
|
|
|
|
if (send_eos)
|
|
if (!gst_pad_push_event (funnel->srcpad, gst_event_new_eos ()))
|
|
GST_WARNING_OBJECT (funnel, "Failure pushing EOS");
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_funnel_sink_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
{
|
|
GstFlowReturn res;
|
|
GstFunnel *funnel = GST_FUNNEL (parent);
|
|
GstFunnelPad *fpad = GST_FUNNEL_PAD_CAST (pad);
|
|
GstEvent *event = NULL;
|
|
GstClockTime newts;
|
|
#if 0
|
|
GstCaps *padcaps;
|
|
#endif
|
|
|
|
GST_DEBUG_OBJECT (funnel, "received buffer %p", buffer);
|
|
|
|
GST_OBJECT_LOCK (funnel);
|
|
|
|
if (fpad->got_eos) {
|
|
GST_OBJECT_UNLOCK (funnel);
|
|
GST_WARNING_OBJECT (funnel, "Got buffer on pad that received EOS");
|
|
res = GST_FLOW_EOS;
|
|
gst_buffer_unref (buffer);
|
|
goto out;
|
|
}
|
|
|
|
if (fpad->segment.format == GST_FORMAT_UNDEFINED) {
|
|
GST_WARNING_OBJECT (funnel, "Got buffer without segment,"
|
|
" setting segment [0,inf[");
|
|
gst_segment_init (&fpad->segment, GST_FORMAT_TIME);
|
|
}
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buffer)))
|
|
fpad->segment.position = GST_BUFFER_TIMESTAMP (buffer);
|
|
|
|
newts = gst_segment_to_running_time (&fpad->segment,
|
|
fpad->segment.format, GST_BUFFER_TIMESTAMP (buffer));
|
|
if (newts != GST_BUFFER_TIMESTAMP (buffer)) {
|
|
buffer = gst_buffer_make_writable (buffer);
|
|
GST_BUFFER_TIMESTAMP (buffer) = newts;
|
|
}
|
|
|
|
if (!funnel->has_segment) {
|
|
GstSegment segment;
|
|
|
|
gst_segment_init (&segment, GST_FORMAT_TIME);
|
|
event = gst_event_new_segment (&segment);
|
|
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");
|
|
}
|
|
#if 0
|
|
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;
|
|
gst_buffer_unref (buffer);
|
|
goto out;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
res = gst_pad_push (funnel->srcpad, buffer);
|
|
|
|
GST_LOG_OBJECT (funnel, "handled buffer %s", gst_flow_get_name (res));
|
|
|
|
out:
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_funnel_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstFunnel *funnel = GST_FUNNEL (parent);
|
|
GstFunnelPad *fpad = GST_FUNNEL_PAD_CAST (pad);
|
|
gboolean forward = TRUE;
|
|
gboolean res = TRUE;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEGMENT:
|
|
{
|
|
GST_OBJECT_LOCK (funnel);
|
|
gst_event_copy_segment (event, &fpad->segment);
|
|
GST_OBJECT_UNLOCK (funnel);
|
|
|
|
forward = FALSE;
|
|
break;
|
|
}
|
|
case GST_EVENT_FLUSH_STOP:
|
|
{
|
|
GST_OBJECT_LOCK (funnel);
|
|
gst_segment_init (&fpad->segment, GST_FORMAT_UNDEFINED);
|
|
funnel->has_segment = FALSE;
|
|
fpad->got_eos = FALSE;
|
|
GST_OBJECT_UNLOCK (funnel);
|
|
}
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
{
|
|
GST_OBJECT_LOCK (funnel);
|
|
fpad->got_eos = TRUE;
|
|
|
|
if (!gst_funnel_all_sinkpads_eos_unlocked (funnel)) {
|
|
GST_DEBUG_OBJECT (funnel,
|
|
"Got EOS, but not from all sinkpads. Skipping");
|
|
forward = FALSE;
|
|
} else {
|
|
GST_DEBUG_OBJECT (funnel, "Got EOS from all sinkpads. Forwarding");
|
|
}
|
|
GST_OBJECT_UNLOCK (funnel);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (forward)
|
|
res = gst_pad_push_event (funnel->srcpad, event);
|
|
else
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_funnel_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstFunnel *funnel = GST_FUNNEL (parent);
|
|
gboolean forward = TRUE;
|
|
gboolean res = TRUE;
|
|
|
|
if (forward)
|
|
res = gst_pad_peer_query (funnel->srcpad, query);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_funnel_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstElement *funnel;
|
|
GstIterator *iter;
|
|
GstPad *sinkpad;
|
|
gboolean result = FALSE;
|
|
gboolean done = FALSE;
|
|
GValue value = { 0, };
|
|
|
|
funnel = GST_ELEMENT_CAST (parent);
|
|
|
|
iter = gst_element_iterate_sink_pads (funnel);
|
|
|
|
while (!done) {
|
|
switch (gst_iterator_next (iter, &value)) {
|
|
case GST_ITERATOR_OK:
|
|
sinkpad = g_value_get_object (&value);
|
|
gst_event_ref (event);
|
|
result |= gst_pad_push_event (sinkpad, event);
|
|
g_value_reset (&value);
|
|
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;
|
|
}
|
|
}
|
|
g_value_unset (&value);
|
|
gst_iterator_free (iter);
|
|
gst_event_unref (event);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
reset_pad (const GValue * data, gpointer user_data)
|
|
{
|
|
GstPad *pad = g_value_get_object (data);
|
|
GstFunnelPad *fpad = GST_FUNNEL_PAD_CAST (pad);
|
|
|
|
GST_OBJECT_LOCK (pad);
|
|
gst_funnel_pad_reset (fpad);
|
|
GST_OBJECT_UNLOCK (pad);
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_funnel_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstFunnel *funnel = GST_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;
|
|
}
|