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gstreamer/gst/gstbin.c
Wim Taymans 695f761c2b Fixed a bug in the typeloading. 
Original commit message from CVS:
Fixed a bug in the typeloading.
Fixes to various elements so that correct types are returned.
Fixed flag collision with GtkObject.
Elements can now suggest a thread. not sure if this is the right way to
handle automatic thread creation.
Autoplugging now works with multiple sinks and thread setup. No threads
are created for intermediate elements yet, so MPEG may still be choppy.
2000-10-08 22:17:11 +00:00

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
//#define DEBUG_ENABLED
#include <gst/gst.h>
#include "config.h"
GstElementDetails gst_bin_details = {
"Generic bin",
"Bin",
"Simple container object",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
void gst_bin_real_destroy(GtkObject *object);
static GstElementStateReturn gst_bin_change_state(GstElement *element);
static GstElementStateReturn gst_bin_change_state_norecurse(GstBin *bin);
static gboolean gst_bin_change_state_type(GstBin *bin,
GstElementState state,
GtkType type);
static void gst_bin_create_plan_func(GstBin *bin);
static void gst_bin_iterate_func(GstBin *bin);
static xmlNodePtr gst_bin_save_thyself(GstElement *element,xmlNodePtr parent);
static void gst_bin_restore_thyself(GstElement *element, xmlNodePtr parent, GHashTable *elements);
/* Bin signals and args */
enum {
OBJECT_ADDED,
LAST_SIGNAL
};
enum {
ARG_0,
/* FILL ME */
};
static void gst_bin_class_init(GstBinClass *klass);
static void gst_bin_init(GstBin *bin);
static GstElementClass *parent_class = NULL;
static guint gst_bin_signals[LAST_SIGNAL] = { 0 };
GtkType
gst_bin_get_type(void) {
static GtkType bin_type = 0;
if (!bin_type) {
static const GtkTypeInfo bin_info = {
"GstBin",
sizeof(GstBin),
sizeof(GstBinClass),
(GtkClassInitFunc)gst_bin_class_init,
(GtkObjectInitFunc)gst_bin_init,
(GtkArgSetFunc)NULL,
(GtkArgGetFunc)NULL,
(GtkClassInitFunc)NULL,
};
bin_type = gtk_type_unique(GST_TYPE_ELEMENT,&bin_info);
}
return bin_type;
}
static void
gst_bin_class_init(GstBinClass *klass) {
GtkObjectClass *gtkobject_class;
GstElementClass *gstelement_class;
gtkobject_class = (GtkObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = gtk_type_class(GST_TYPE_ELEMENT);
gst_bin_signals[OBJECT_ADDED] =
gtk_signal_new("object_added",GTK_RUN_FIRST,gtkobject_class->type,
GTK_SIGNAL_OFFSET(GstBinClass,object_added),
gtk_marshal_NONE__POINTER,GTK_TYPE_NONE,1,
GST_TYPE_ELEMENT);
gtk_object_class_add_signals(gtkobject_class,gst_bin_signals,LAST_SIGNAL);
klass->change_state_type = gst_bin_change_state_type;
klass->create_plan = gst_bin_create_plan_func;
klass->iterate = gst_bin_iterate_func;
gstelement_class->change_state = gst_bin_change_state;
gstelement_class->save_thyself = gst_bin_save_thyself;
gstelement_class->restore_thyself = gst_bin_restore_thyself;
gstelement_class->elementfactory = gst_elementfactory_find("bin");
gtkobject_class->destroy = gst_bin_real_destroy;
}
static void gst_bin_init(GstBin *bin) {
bin->numchildren = 0;
bin->children = NULL;
bin->use_cothreads = TRUE;
}
/**
* gst_bin_new:
* @name: name of new bin
*
* Create a new bin with given name.
*
* Returns: new bin
*/
GstElement *gst_bin_new(gchar *name) {
GstElement *bin = GST_ELEMENT(gtk_type_new(GST_TYPE_BIN));
gst_element_set_name(GST_ELEMENT(bin),name);
return bin;
}
/**
* gst_bin_add:
* @bin: #GstBin to add element to
* @element: #GstElement to add to bin
*
* Add the given element to the bin. Set the elements parent, and thus
* add a reference.
*/
void gst_bin_add(GstBin *bin,GstElement *element) {
g_return_if_fail(bin != NULL);
g_return_if_fail(GST_IS_BIN(bin));
g_return_if_fail(element != NULL);
g_return_if_fail(GST_IS_ELEMENT(element));
// must be NULL or PAUSED state in order to modify bin
g_return_if_fail((GST_STATE(bin) == GST_STATE_NULL) ||
(GST_STATE(bin) == GST_STATE_PAUSED));
bin->children = g_list_append(bin->children,element);
bin->numchildren++;
gst_object_set_parent(GST_OBJECT(element),GST_OBJECT(bin));
/* we know we have at least one child, we just added one... */
// if (GST_STATE(element) < GST_STATE_READY)
// gst_bin_change_state_norecurse(bin,GST_STATE_READY);
gtk_signal_emit(GTK_OBJECT(bin),gst_bin_signals[OBJECT_ADDED],element);
}
/**
* gst_bin_remove:
* @bin: #GstBin to remove element from
* @element: #GstElement to remove
*
* Remove the element from its associated bin, unparenting as well.
*/
void gst_bin_remove(GstBin *bin,GstElement *element) {
g_return_if_fail(bin != NULL);
g_return_if_fail(GST_IS_BIN(bin));
g_return_if_fail(element != NULL);
g_return_if_fail(GST_IS_ELEMENT(element));
g_return_if_fail(bin->children != NULL);
// must be NULL or PAUSED state in order to modify bin
g_return_if_fail((GST_STATE(bin) == GST_STATE_NULL) ||
(GST_STATE(bin) == GST_STATE_PAUSED));
gst_object_unparent(GST_OBJECT(element));
bin->children = g_list_remove(bin->children,element);
bin->numchildren--;
/* if we're down to zero children, force state to NULL */
if (bin->numchildren == 0)
gst_element_set_state(GST_ELEMENT(bin),GST_STATE_NULL);
}
static GstElementStateReturn gst_bin_change_state(GstElement *element) {
GstBin *bin;
GList *children;
GstElement *child;
g_return_val_if_fail(GST_IS_BIN(element), GST_STATE_FAILURE);
bin = GST_BIN(element);
g_print("gst_bin_change_state(\"%s\"): currently %d(%s), %d(%s) pending\n",
gst_element_get_name(element),GST_STATE(element),
_gst_print_statename(GST_STATE(element)),GST_STATE_PENDING(element),
_gst_print_statename(GST_STATE_PENDING(element)));
if (GST_STATE_PENDING(element) == GST_STATE_READY) {
gst_bin_create_plan(bin);
}
// g_return_val_if_fail(bin->numchildren != 0, GST_STATE_FAILURE);
// g_print("-->\n");
children = bin->children;
while (children) {
child = GST_ELEMENT(children->data);
g_print("gst_bin_change_state: setting state on '%s'\n",
gst_element_get_name(child));
switch (gst_element_set_state(child,GST_STATE_PENDING(element))) {
case GST_STATE_FAILURE:
GST_STATE_PENDING(element) = GST_STATE_NONE_PENDING;
g_print("gstbin: child '%s' failed to go to state %d(%s)\n",gst_element_get_name(child),
GST_STATE_PENDING(element),_gst_print_statename(GST_STATE_PENDING(element)));
return GST_STATE_FAILURE;
break;
case GST_STATE_ASYNC:
g_print("gstbin: child '%s' is changing state asynchronously\n",gst_element_get_name(child));
break;
}
// g_print("\n");
children = g_list_next(children);
}
// g_print("<-- \"%s\"\n",gst_object_get_name(GST_OBJECT(bin)));
return gst_bin_change_state_norecurse(bin);
}
static GstElementStateReturn gst_bin_change_state_norecurse(GstBin *bin) {
if (GST_ELEMENT_CLASS(parent_class)->change_state)
return GST_ELEMENT_CLASS(parent_class)->change_state(GST_ELEMENT(bin));
else
return GST_STATE_FAILURE;
}
static gboolean gst_bin_change_state_type(GstBin *bin,
GstElementState state,
GtkType type) {
GList *children;
GstElement *child;
// g_print("gst_bin_change_state_type(\"%s\",%d,%d);\n",
// gst_object_get_name(GST_OBJECT(bin)),state,type);
g_return_val_if_fail(GST_IS_BIN(bin), FALSE);
g_return_val_if_fail(bin->numchildren != 0, FALSE);
// g_print("-->\n");
children = bin->children;
while (children) {
child = GST_ELEMENT(children->data);
if (GST_IS_BIN(child)) {
if (!gst_bin_set_state_type(GST_BIN(child),state,type))
return FALSE;
} else if (GTK_CHECK_TYPE(child,type)) {
if (!gst_element_set_state(child,state))
return FALSE;
}
// g_print("\n");
children = g_list_next(children);
}
if (type == GST_TYPE_BIN)
gst_element_set_state(GST_ELEMENT(bin),state);
return TRUE;
}
/**
* gst_bin_set_state_type:
* @bin: #GstBin to set the state
* @state: the new state to set the elements to
* @type: the type of elements to change
*
* Sets the state of only those objects of the given type.
*
* Returns: indication if the state change was successfull
*/
gboolean gst_bin_set_state_type(GstBin *bin,
GstElementState state,
GtkType type) {
GstBinClass *oclass;
DEBUG("gst_bin_set_state_type(\"%s\",%d,%d)\n",
gst_element_get_name(GST_ELEMENT(bin)),state,type);
g_return_val_if_fail(bin != NULL, FALSE);
g_return_val_if_fail(GST_IS_BIN(bin), FALSE);
oclass = GST_BIN_CLASS(GTK_OBJECT(bin)->klass);
if (oclass->change_state_type)
(oclass->change_state_type)(bin,state,type);
return TRUE;
}
void gst_bin_real_destroy(GtkObject *object) {
GstBin *bin = GST_BIN(object);
GList *children;
GstElement *child;
DEBUG("in gst_bin_real_destroy()\n");
children = bin->children;
while (children) {
child = GST_ELEMENT(children->data);
gst_element_destroy(child);
children = g_list_next(children);
}
g_list_free(bin->children);
}
/**
* gst_bin_get_by_name:
* @bin: #Gstbin to search
* @name: the element name to search for
*
* get the element with the given name from this bin
*
* Returns: the element with the given name
*/
GstElement *gst_bin_get_by_name(GstBin *bin,gchar *name) {
GList *children;
GstElement *child;
g_return_val_if_fail(bin != NULL, NULL);
g_return_val_if_fail(GST_IS_BIN(bin), NULL);
g_return_val_if_fail(name != NULL, NULL);
g_print("gstbin: lookup element \"%s\" in \"%s\"\n", name, gst_element_get_name(GST_ELEMENT(bin)));
children = bin->children;
while (children) {
child = GST_ELEMENT(children->data);
if (!strcmp(child->name,name))
return child;
if (GST_IS_BIN(child)) {
GstElement *res = gst_bin_get_by_name(GST_BIN(child), name);
if (res)
return res;
}
children = g_list_next(children);
}
return NULL;
}
/**
* gst_bin_get_list:
* @bin: #Gstbin to get the list from
*
* get the list of elements in this bin
*
* Returns: a GList of elements
*/
GList *gst_bin_get_list(GstBin *bin) {
g_return_val_if_fail(bin != NULL, NULL);
g_return_val_if_fail(GST_IS_BIN(bin), NULL);
return bin->children;
}
static xmlNodePtr gst_bin_save_thyself(GstElement *element, xmlNodePtr parent) {
GstBin *bin = GST_BIN(element);
xmlNodePtr childlist;
GList *children;
GstElement *child;
if (GST_ELEMENT_CLASS(parent_class)->save_thyself)
GST_ELEMENT_CLASS(parent_class)->save_thyself(GST_ELEMENT(bin),parent);
childlist = xmlNewChild(parent,NULL,"children",NULL);
children = bin->children;
while (children) {
child = GST_ELEMENT(children->data);
gst_element_save_thyself(child,childlist);
children = g_list_next(children);
}
return childlist;
}
static void gst_bin_restore_thyself(GstElement *element, xmlNodePtr parent, GHashTable *elements) {
GstBin *bin = GST_BIN(element);
xmlNodePtr field = parent->childs;
xmlNodePtr childlist;
g_print("gstbin: restore \"%s\"\n", gst_element_get_name(element));
while (field) {
if (!strcmp(field->name, "children")) {
childlist = field->childs;
while (childlist) {
if (!strcmp(childlist->name, "element")) {
GstElement *element = gst_element_load_thyself(childlist, elements);
gst_bin_add(bin, element);
}
childlist = childlist->next;
}
}
field = field->next;
}
}
void gst_bin_use_cothreads(GstBin *bin, gboolean enabled) {
g_return_if_fail(GST_IS_BIN(bin));
bin->use_cothreads = enabled;
}
/**
* gst_bin_iterate:
* @bin: #Gstbin to iterate
*
* iterates over the elements in this bin
*/
void gst_bin_iterate(GstBin *bin) {
GstBinClass *oclass;
oclass = GST_BIN_CLASS(GTK_OBJECT(bin)->klass);
DEBUG("gst_bin_iterate()\n");
if (oclass->iterate)
(oclass->iterate)(bin);
}
/**
* gst_bin_create_plan:
* @bin: #Gstbin to create the plan for
*
* let the bin figure out how to handle the plugins in it.
*/
void gst_bin_create_plan(GstBin *bin) {
GstBinClass *oclass;
oclass = GST_BIN_CLASS(GTK_OBJECT(bin)->klass);
if (oclass->create_plan)
(oclass->create_plan)(bin);
}
static int gst_bin_loopfunc_wrapper(int argc,char *argv[]) {
GstElement *element = GST_ELEMENT(argv);
GList *pads;
GstPad *pad;
GstBuffer *buf;
G_GNUC_UNUSED gchar *name = gst_element_get_name(element);
DEBUG("** gst_bin_loopfunc_wrapper(%d,\"%s\")\n",
argc,gst_element_get_name(element));
if (element->loopfunc != NULL) {
while (1) {
DEBUG("** gst_bin_loopfunc_wrapper(): element %s has loop function, calling it\n", name);
(element->loopfunc)(element);
DEBUG("** gst_bin_loopfunc_wrapper(): element %s ended loop function\n", name);
}
} else {
DEBUG("** gst_bin_loopfunc_wrapper(): element %s is chain-based, calling in infinite loop\n", name);
if (GST_IS_SRC(element)) {
DEBUG("** gst_bin_loopfunc_wrapper(): calling push function of source %s\n", name);
gst_src_push(GST_SRC(element));
DEBUG("** gst_bin_loopfunc_wrapper(): calling push function of source %s done\n", name);
} else if (GST_IS_CONNECTION(element) && argc == 1) {
while (1) {
DEBUG("** gst_bin_loopfunc_wrapper(): calling push function of connection %s\n", name);
gst_connection_push(GST_CONNECTION(element));
DEBUG("** gst_bin_loopfunc_wrapper(): calling push function of connection %s done\n", name);
}
} else {
while (1) {
pads = element->pads;
while (pads) {
pad = GST_PAD(pads->data);
if (pad->direction == GST_PAD_SINK) {
DEBUG("** gst_bin_loopfunc_wrapper(): pulling a buffer from %s:%s\n", name, gst_pad_get_name(pad));
buf = gst_pad_pull(pad);
DEBUG("** gst_bin_loopfunc_wrapper(): calling chain function of %s:%s\n", name, gst_pad_get_name(pad));
(pad->chainfunc)(pad,buf);
}
pads = g_list_next(pads);
}
}
}
}
return 0;
}
static void gst_bin_pullfunc_wrapper(GstPad *pad) {
DEBUG("** in gst_bin_pullfunc_wrapper()============================= %s\n",
gst_element_get_name(GST_ELEMENT(pad->parent)));
cothread_switch(GST_ELEMENT(pad->parent)->threadstate);
DEBUG("** out gst_bin_pullfunc_wrapper()============================= %s\n",
gst_element_get_name(GST_ELEMENT(pad->parent)));
}
static void gst_bin_pushfunc_wrapper(GstPad *pad) {
DEBUG("** in gst_bin_pushfunc_wrapper()============================= %s\n",
gst_element_get_name(GST_ELEMENT(pad->parent)));
cothread_switch(GST_ELEMENT(pad->parent)->threadstate);
DEBUG("** out gst_bin_pushfunc_wrapper()============================= %s\n",
gst_element_get_name(GST_ELEMENT(pad->parent)));
}
static void gst_bin_create_plan_func(GstBin *bin) {
GList *elements;
GstElement *element;
int sink_pads;
GList *pads;
GstPad *pad, *opad, *peer;
GstElement *outside;
g_print("gstbin: creating plan for bin \"%s\"\n", gst_element_get_name(GST_ELEMENT(bin)));
// first loop through all children to see if we need cothreads
// we break immediately when we find we need to, why keep searching?
elements = bin->children;
while (elements) {
element = GST_ELEMENT(elements->data);
g_print("gstbin: found element \"%s\" in bin \"%s\"\n", gst_element_get_name(element), gst_element_get_name(GST_ELEMENT(bin)));
// if it's a loop-based element, use cothreads
if (element->loopfunc != NULL) {
g_print("gstbin: loop based element \"%s\" in bin \"%s\"\n", gst_element_get_name(element), gst_element_get_name(GST_ELEMENT(bin)));
bin->need_cothreads = TRUE;
break;
}
// if it's a complex element, use cothreads
else if (GST_ELEMENT_IS_MULTI_IN(element)) {
g_print("gstbin: complex element \"%s\" in bin \"%s\"\n", gst_element_get_name(element), gst_element_get_name(GST_ELEMENT(bin)));
bin->need_cothreads = TRUE;
break;
}
// if it has more than one input pad, use cothreads
sink_pads = 0;
pads = gst_element_get_pad_list(element);
while (pads) {
pad = GST_PAD(pads->data);
if (pad->direction == GST_PAD_SINK)
sink_pads++;
pads = g_list_next(pads);
}
if (sink_pads > 1) {
g_print("gstbin: more than 1 sinkpad for element \"%s\" in bin \"%s\"\n", gst_element_get_name(element), gst_element_get_name(GST_ELEMENT(bin)));
bin->need_cothreads = TRUE;
break;
}
elements = g_list_next(elements);
}
// FIXME
bin->need_cothreads &= bin->use_cothreads;
// clear previous plan state
g_list_free(bin->entries);
bin->entries = NULL;
bin->numentries = 0;
if (bin->need_cothreads) {
g_print("gstbin: need cothreads\n");
// first create thread context
if (bin->threadcontext == NULL) {
bin->threadcontext = cothread_init();
g_print("gstbin: initialized cothread context\n");
}
// walk through all the children
elements = bin->children;
while (elements) {
element = GST_ELEMENT(elements->data);
// start by creating thread state for the element
if (element->threadstate == NULL) {
element->threadstate = cothread_create(bin->threadcontext);
cothread_setfunc(element->threadstate,gst_bin_loopfunc_wrapper,
0,(char **)element);
}
if (GST_IS_SRC(element)) {
g_print("gstbin: adding '%s' as entry point\n",gst_element_get_name(element));
bin->entries = g_list_prepend(bin->entries,element);
bin->numentries++;
}
pads = gst_element_get_pad_list(element);
while (pads) {
pad = GST_PAD(pads->data);
g_print("gstbin: setting push&pull handlers for %s:%s\n",
gst_element_get_name(element),gst_pad_get_name(pad));
// an internal connection will push outside this bin.
if (!GST_IS_CONNECTION(element)) {
pad->pushfunc = gst_bin_pushfunc_wrapper;
}
pad->pullfunc = gst_bin_pullfunc_wrapper;
/* we only worry about sink pads */
if (gst_pad_get_direction(pad) == GST_PAD_SINK) {
/* get the pad's peer */
peer = gst_pad_get_peer(pad);
if (!peer) break;
/* get the parent of the peer of the pad */
outside = GST_ELEMENT(gst_pad_get_parent(peer));
if (!outside) break;
/* if it's a connection and it's not ours... */
if (GST_IS_CONNECTION(outside) &&
(gst_object_get_parent(GST_OBJECT(outside)) != GST_OBJECT(bin))) {
GList *connection_pads = gst_element_get_pad_list(outside);
while (connection_pads) {
opad = GST_PAD(connection_pads->data);
if (gst_pad_get_direction(opad) == GST_PAD_SRC) {
g_print("gstbin: setting push&pull handlers for %s:%s SRC connection %p %p\n",
gst_element_get_name(outside),gst_pad_get_name(opad), opad, opad->pullfunc);
opad->pushfunc = gst_bin_pushfunc_wrapper;
opad->pullfunc = gst_bin_pullfunc_wrapper;
if (outside->threadstate == NULL) {
outside->threadstate = cothread_create(bin->threadcontext);
cothread_setfunc(outside->threadstate,gst_bin_loopfunc_wrapper,
1,(char **)outside);
}
}
connection_pads = g_list_next(connection_pads);
}
gst_info("gstbin: element \"%s\" is the external source Connection "
"for internal element \"%s\"\n",
gst_element_get_name(GST_ELEMENT(outside)),
gst_element_get_name(GST_ELEMENT(element)));
bin->entries = g_list_prepend(bin->entries,outside);
bin->numentries++;
}
}
pads = g_list_next(pads);
}
elements = g_list_next(elements);
}
} else {
g_print("gstbin: don't need cothreads, looking for entry points\n");
// we have to find which elements will drive an iteration
elements = bin->children;
while (elements) {
element = GST_ELEMENT(elements->data);
g_print("gstbin: found element \"%s\"\n", gst_element_get_name(element));
if (GST_IS_SRC(element)) {
g_print("gstbin: adding '%s' as entry point\n",gst_element_get_name(element));
bin->entries = g_list_prepend(bin->entries,element);
bin->numentries++;
} else {
/* go through the list of pads to see if there's a Connection */
pads = gst_element_get_pad_list(element);
while (pads) {
pad = GST_PAD(pads->data);
/* we only worry about sink pads */
if (gst_pad_get_direction(pad) == GST_PAD_SINK) {
g_print("gstbin: found SINK pad %s\n", gst_pad_get_name(pad));
/* get the pad's peer */
peer = gst_pad_get_peer(pad);
if (!peer) {
g_print("gstbin: found SINK pad %s has no peer\n", gst_pad_get_name(pad));
break;
}
/* get the parent of the peer of the pad */
outside = GST_ELEMENT(gst_pad_get_parent(peer));
if (!outside) break;
/* if it's a connection and it's not ours... */
if (GST_IS_CONNECTION(outside) &&
(gst_object_get_parent(GST_OBJECT(outside)) != GST_OBJECT(bin))) {
gst_info("gstbin: element \"%s\" is the external source Connection "
"for internal element \"%s\"\n",
gst_element_get_name(GST_ELEMENT(outside)),
gst_element_get_name(GST_ELEMENT(element)));
bin->entries = g_list_prepend(bin->entries,outside);
bin->numentries++;
}
}
else {
g_print("gstbin: found pad %s\n", gst_pad_get_name(pad));
}
pads = g_list_next(pads);
}
}
elements = g_list_next(elements);
}
}
}
void gst_bin_iterate_func(GstBin *bin) {
GList *entries;
GstElement *entry;
DEBUG("gst_bin_iterate_func() in \"%s\"\n", gst_element_get_name(GST_ELEMENT(bin)));
g_return_if_fail(bin != NULL);
g_return_if_fail(GST_IS_BIN(bin));
g_return_if_fail(GST_STATE(bin) == GST_STATE_PLAYING);
DEBUG("GstBin: iterating\n");
if (bin->need_cothreads) {
// all we really have to do is switch to the first child
// FIXME this should be lots more intelligent about where to start
DEBUG("** in gst_bin_iterate_func()==================================%s\n",
gst_element_get_name(GST_ELEMENT(bin->children->data)));
cothread_switch(GST_ELEMENT(bin->children->data)->threadstate);
} else {
if (bin->numentries <= 0) {
printf("gstbin: no entries in bin \"%s\" trying children...\n", gst_element_get_name(GST_ELEMENT(bin)));
// we will try loop over the elements then...
entries = bin->children;
}
else {
entries = bin->entries;
}
g_assert(entries != NULL);
while (entries) {
entry = GST_ELEMENT(entries->data);
if (GST_IS_SRC(entry))
gst_src_push(GST_SRC(entry));
else if (GST_IS_CONNECTION(entry))
gst_connection_push(GST_CONNECTION(entry));
else if (GST_IS_BIN(entry))
gst_bin_iterate(GST_BIN(entry));
else
g_assert_not_reached();
entries = g_list_next(entries);
}
}
}
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