--- /dev/null
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wtay@chello.be>
+ *
+ * gstscheduler.c: Default scheduling code for most cases
+ *
+ * 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 GST_DEBUG_ENABLED */
+#include <gst/gst.h>
+
+#include "cothreads_compat.h"
+
+
+#define GST_ELEMENT_SCHED_CONTEXT(elem) ((GstOptSchedulerCtx*) (GST_ELEMENT_CAST (elem)->sched_private))
+#define GST_ELEMENT_SCHED_GROUP(elem) (GST_ELEMENT_SCHED_CONTEXT (elem)->group)
+
+#define GST_ELEMENT_COTHREAD_STOPPING GST_ELEMENT_SCHEDULER_PRIVATE1
+#define GST_ELEMENT_IS_COTHREAD_STOPPING(element) GST_FLAG_IS_SET((element), GST_ELEMENT_COTHREAD_STOPPING)
+#define GST_ELEMENT_INTERRUPTED GST_ELEMENT_SCHEDULER_PRIVATE2
+#define GST_ELEMENT_IS_INTERRUPTED(element) GST_FLAG_IS_SET((element), GST_ELEMENT_INTERRUPTED)
+
+typedef struct _GstOptScheduler GstOptScheduler;
+typedef struct _GstOptSchedulerClass GstOptSchedulerClass;
+
+#define GST_TYPE_OPT_SCHEDULER \
+ (gst_opt_scheduler_get_type())
+#define GST_OPT_SCHEDULER(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OPT_SCHEDULER,GstOptScheduler))
+#define GST_OPT_SCHEDULER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OPT_SCHEDULER,GstOptSchedulerClass))
+#define GST_IS_OPT_SCHEDULER(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OPT_SCHEDULER))
+#define GST_IS_OPT_SCHEDULER_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OPT_SCHEDULER))
+
+#define GST_OPT_SCHEDULER_CAST(sched) ((GstOptScheduler *)(sched))
+
+typedef enum {
+ GST_OPT_SCHEDULER_STATE_NONE,
+ GST_OPT_SCHEDULER_STATE_STOPPED,
+ GST_OPT_SCHEDULER_STATE_ERROR,
+ GST_OPT_SCHEDULER_STATE_RUNNING,
+} GstOptSchedulerState;
+
+struct _GstOptScheduler {
+ GstScheduler parent;
+
+ GstOptSchedulerState state;
+
+ cothread_context *context;
+ gboolean use_cothreads;
+
+ GList *elements;
+ GList *chains;
+};
+
+struct _GstOptSchedulerClass {
+ GstSchedulerClass parent_class;
+};
+
+static GType _gst_opt_scheduler_type = 0;
+
+typedef enum {
+ GST_OPT_SCHEDULER_CHAIN_DIRTY = (1 << 1),
+ GST_OPT_SCHEDULER_CHAIN_DISABLED = (1 << 2),
+ GST_OPT_SCHEDULER_CHAIN_RUNNING = (1 << 3),
+} GstOptSchedulerChainFlags;
+
+#define GST_OPT_SCHEDULER_CHAIN_DISABLE(chain) ((chain)->flags |= GST_OPT_SCHEDULER_CHAIN_DISABLED)
+#define GST_OPT_SCHEDULER_CHAIN_ENABLE(chain) ((chain)->flags &= ~GST_OPT_SCHEDULER_CHAIN_DISABLED)
+#define GST_OPT_SCHEDULER_CHAIN_IS_DISABLED(chain) ((chain)->flags & GST_OPT_SCHEDULER_CHAIN_DISABLED)
+
+typedef struct _GstOptSchedulerChain GstOptSchedulerChain;
+
+struct _GstOptSchedulerChain {
+ GstOptScheduler *sched;
+
+ GstOptSchedulerChainFlags flags;
+
+ GList *groups; /* the groups in this chain */
+ gint num_groups;
+ gint num_enabled;
+};
+
+/*
+ * elements that are scheduled in one cothread
+ */
+typedef enum {
+ GST_OPT_SCHEDULER_GROUP_DIRTY = (1 << 1), /* this group has been modified */
+ GST_OPT_SCHEDULER_GROUP_COTHREAD_STOPPING = (1 << 2), /* the group's cothread stops after one iteration */
+ GST_OPT_SCHEDULER_GROUP_DISABLED = (1 << 3), /* this group is disabled */
+ GST_OPT_SCHEDULER_GROUP_RUNNING = (1 << 4), /* this group is running */
+ GST_OPT_SCHEDULER_GROUP_SCHEDULABLE = (1 << 5), /* this group is schedulable */
+} GstOptSchedulerGroupFlags;
+
+typedef enum {
+ GST_OPT_SCHEDULER_GROUP_GET = 1,
+ GST_OPT_SCHEDULER_GROUP_LOOP = 2,
+} GstOptSchedulerGroupType;
+
+#define GST_OPT_SCHEDULER_GROUP_DISABLE(group) ((group)->flags |= GST_OPT_SCHEDULER_GROUP_DISABLED)
+#define GST_OPT_SCHEDULER_GROUP_ENABLE(group) ((group)->flags &= ~GST_OPT_SCHEDULER_GROUP_DISABLED)
+#define GST_OPT_SCHEDULER_GROUP_IS_DISABLED(group) ((group)->flags & GST_OPT_SCHEDULER_GROUP_DISABLED)
+
+typedef struct _GstOptSchedulerGroup GstOptSchedulerGroup;
+
+typedef int (*GroupScheduleFunction) (int argc, char *argv[]);
+
+struct _GstOptSchedulerGroup {
+ GstOptSchedulerChain *chain; /* the chain this group belongs to */
+ GstOptSchedulerGroupFlags flags; /* flags for this group */
+ GstOptSchedulerGroupType type; /* flags for this group */
+
+ GList *elements; /* elements of this group */
+ gint num_elements;
+ gint num_enabled;
+ GstElement *entry; /* the group's entry point */
+
+ cothread *cothread; /* the cothread of this group */
+
+ GroupScheduleFunction schedulefunc;
+ int argc;
+ char **argv;
+};
+
+/*
+ * Scheduler private data for an element
+ */
+typedef struct _GstOptSchedulerCtx GstOptSchedulerCtx;
+
+typedef enum {
+ GST_OPT_SCHEDULER_CTX_DISABLED = (1 << 1), /* the element is disabled */
+} GstOptSchedulerCtxFlags;
+
+struct _GstOptSchedulerCtx {
+ GstOptSchedulerGroup *group; /* the group this element belongs to */
+
+ GstOptSchedulerCtxFlags flags; /* flags for this element */
+ gint element_type;
+};
+
+
+static void gst_opt_scheduler_class_init (GstOptSchedulerClass *klass);
+static void gst_opt_scheduler_init (GstOptScheduler *scheduler);
+
+static void gst_opt_scheduler_dispose (GObject *object);
+
+static void gst_opt_scheduler_setup (GstScheduler *sched);
+static void gst_opt_scheduler_reset (GstScheduler *sched);
+static void gst_opt_scheduler_add_element (GstScheduler *sched, GstElement *element);
+static void gst_opt_scheduler_remove_element (GstScheduler *sched, GstElement *element);
+static GstElementStateReturn
+ gst_opt_scheduler_state_transition (GstScheduler *sched, GstElement *element, gint transition);
+static void gst_opt_scheduler_lock_element (GstScheduler *sched, GstElement *element);
+static void gst_opt_scheduler_unlock_element (GstScheduler *sched, GstElement *element);
+static void gst_opt_scheduler_yield (GstScheduler *sched, GstElement *element);
+static gboolean gst_opt_scheduler_interrupt (GstScheduler *sched, GstElement *element);
+static void gst_opt_scheduler_error (GstScheduler *sched, GstElement *element);
+static void gst_opt_scheduler_pad_connect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
+static void gst_opt_scheduler_pad_disconnect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
+static GstPad* gst_opt_scheduler_pad_select (GstScheduler *sched, GList *padlist);
+static GstClockReturn gst_opt_scheduler_clock_wait (GstScheduler *sched, GstElement *element,
+ GstClock *clock, GstClockTime time, GstClockTimeDiff *jitter);
+static GstSchedulerState
+ gst_opt_scheduler_iterate (GstScheduler *sched);
+
+static void gst_opt_scheduler_show (GstScheduler *sched);
+
+static GstSchedulerClass *parent_class = NULL;
+
+static GType
+gst_opt_scheduler_get_type (void)
+{
+ if (!_gst_opt_scheduler_type) {
+ static const GTypeInfo scheduler_info = {
+ sizeof (GstOptSchedulerClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_opt_scheduler_class_init,
+ NULL,
+ NULL,
+ sizeof (GstOptScheduler),
+ 0,
+ (GInstanceInitFunc) gst_opt_scheduler_init,
+ NULL
+ };
+
+ _gst_opt_scheduler_type = g_type_register_static (GST_TYPE_SCHEDULER, "GstOptScheduler", &scheduler_info, 0);
+ }
+ return _gst_opt_scheduler_type;
+}
+
+static void
+gst_opt_scheduler_class_init (GstOptSchedulerClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstObjectClass *gstobject_class;
+ GstSchedulerClass *gstscheduler_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstobject_class = (GstObjectClass*)klass;
+ gstscheduler_class = (GstSchedulerClass*)klass;
+
+ parent_class = g_type_class_ref (GST_TYPE_SCHEDULER);
+
+ gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_opt_scheduler_dispose);
+
+ gstscheduler_class->setup = GST_DEBUG_FUNCPTR (gst_opt_scheduler_setup);
+ gstscheduler_class->reset = GST_DEBUG_FUNCPTR (gst_opt_scheduler_reset);
+ gstscheduler_class->add_element = GST_DEBUG_FUNCPTR (gst_opt_scheduler_add_element);
+ gstscheduler_class->remove_element = GST_DEBUG_FUNCPTR (gst_opt_scheduler_remove_element);
+ gstscheduler_class->state_transition = GST_DEBUG_FUNCPTR (gst_opt_scheduler_state_transition);
+ gstscheduler_class->lock_element = GST_DEBUG_FUNCPTR (gst_opt_scheduler_lock_element);
+ gstscheduler_class->unlock_element = GST_DEBUG_FUNCPTR (gst_opt_scheduler_unlock_element);
+ gstscheduler_class->yield = GST_DEBUG_FUNCPTR (gst_opt_scheduler_yield);
+ gstscheduler_class->interrupt = GST_DEBUG_FUNCPTR (gst_opt_scheduler_interrupt);
+ gstscheduler_class->error = GST_DEBUG_FUNCPTR (gst_opt_scheduler_error);
+ gstscheduler_class->pad_connect = GST_DEBUG_FUNCPTR (gst_opt_scheduler_pad_connect);
+ gstscheduler_class->pad_disconnect = GST_DEBUG_FUNCPTR (gst_opt_scheduler_pad_disconnect);
+ gstscheduler_class->pad_select = GST_DEBUG_FUNCPTR (gst_opt_scheduler_pad_select);
+ gstscheduler_class->clock_wait = GST_DEBUG_FUNCPTR (gst_opt_scheduler_clock_wait);
+ gstscheduler_class->iterate = GST_DEBUG_FUNCPTR (gst_opt_scheduler_iterate);
+ gstscheduler_class->show = GST_DEBUG_FUNCPTR (gst_opt_scheduler_show);
+}
+
+static void
+gst_opt_scheduler_init (GstOptScheduler *scheduler)
+{
+ scheduler->elements = NULL;
+ scheduler->use_cothreads = FALSE;
+ scheduler->use_cothreads = TRUE;
+}
+
+static void
+gst_opt_scheduler_dispose (GObject *object)
+{
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstSchedulerFactory *factory;
+
+ gst_plugin_set_longname (plugin, "An optimal scheduler");
+
+ factory = gst_scheduler_factory_new ("optimal",
+ "An optimal scheduler",
+ gst_opt_scheduler_get_type());
+
+ if (factory != NULL) {
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+ }
+ else {
+ g_warning ("could not register scheduler: optimal");
+ }
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "gstoptimalscheduler",
+ plugin_init
+};
+
+/*
+ * Entry points for this scheduler.
+ */
+static void
+gst_opt_scheduler_setup (GstScheduler *sched)
+{
+ GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+
+ /* first create thread context */
+ if (osched->context == NULL && osched->use_cothreads) {
+ GST_DEBUG (GST_CAT_SCHEDULING, "initializing cothread context");
+ osched->context = do_cothread_context_init ();
+ }
+}
+
+static void
+gst_opt_scheduler_reset (GstScheduler *sched)
+{
+ GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+
+ if (osched->context && osched->use_cothreads) {
+ do_cothread_context_destroy (osched->context);
+ osched->context = NULL;
+ }
+}
+
+static void
+delete_chain (GstOptScheduler *osched, GstOptSchedulerChain *chain)
+{
+ GST_INFO (GST_CAT_SCHEDULING, "delete chain %p", chain);
+
+ g_assert (chain->sched == osched);
+
+ osched->chains = g_list_remove (osched->chains, chain);
+
+ g_list_free (chain->groups);
+ g_free (chain);
+}
+
+static void
+add_to_chain (GstOptSchedulerChain *chain, GstOptSchedulerGroup *group)
+{
+ GST_INFO (GST_CAT_SCHEDULING, "adding group %p to chain %p", group, chain);
+
+ g_assert (group->chain == NULL);
+
+ chain->groups = g_list_prepend (chain->groups, group);
+ group->chain = chain;
+ chain->num_groups++;
+}
+
+static GstOptSchedulerChain*
+create_chain (GstOptScheduler *osched)
+{
+ GstOptSchedulerChain *chain;
+
+ chain = g_new0 (GstOptSchedulerChain, 1);
+ chain->sched = osched;
+
+ osched->chains = g_list_prepend (osched->chains, chain);
+
+ GST_INFO (GST_CAT_SCHEDULING, "new chain %p", chain);
+
+ return chain;
+}
+
+static void
+remove_from_chain (GstOptSchedulerChain *chain, GstOptSchedulerGroup *group)
+{
+ GST_INFO (GST_CAT_SCHEDULING, "removing group %p from chain %p", group, chain);
+
+ g_assert (group->chain == chain);
+
+ chain->groups = g_list_remove (chain->groups, group);
+ chain->num_groups--;
+
+ group->chain = NULL;
+}
+
+static void
+merge_chains (GstOptSchedulerChain *chain1, GstOptSchedulerChain *chain2)
+{
+ GList *walk;
+
+ GST_INFO (GST_CAT_SCHEDULING, "mergin chain %p and %p", chain1, chain2);
+
+ if (chain1 == chain2)
+ return;
+
+ walk = chain2->groups;
+ while (walk) {
+ GstOptSchedulerGroup *group = (GstOptSchedulerGroup *) walk->data;
+
+ group->chain = NULL;
+ add_to_chain (chain1, group);
+ walk = g_list_next (walk);
+ }
+ delete_chain (chain2->sched, chain2);
+}
+
+static void
+chain_group_set_enabled (GstOptSchedulerChain *chain, GstOptSchedulerGroup *group, gboolean enabled)
+{
+ if (enabled) {
+ chain->num_enabled++;
+ GST_INFO (GST_CAT_SCHEDULING, "enable group %p in chain %p, now %d groups enabled out of %d", group, chain,
+ chain->num_enabled, chain->num_groups);
+ if (chain->num_enabled == chain->num_groups) {
+ GST_INFO (GST_CAT_SCHEDULING, "enable chain %p", chain);
+ GST_OPT_SCHEDULER_CHAIN_ENABLE (chain);
+ }
+ }
+ else {
+ chain->num_enabled--;
+ GST_INFO (GST_CAT_SCHEDULING, "disable group %p in chain %p, now %d groups enabled out of %d", group, chain,
+ chain->num_enabled, chain->num_groups);
+ if (chain->num_enabled == 0) {
+ GST_INFO (GST_CAT_SCHEDULING, "disable chain %p", chain);
+ GST_OPT_SCHEDULER_CHAIN_DISABLE (chain);
+ }
+ }
+}
+
+static void
+add_to_group (GstOptSchedulerGroup *group, GstElement *element)
+{
+ GST_INFO (GST_CAT_SCHEDULING, "adding element \"%s\" to group %p", GST_ELEMENT_NAME (element), group);
+
+ if (GST_ELEMENT_IS_DECOUPLED (element)) {
+ GST_INFO (GST_CAT_SCHEDULING, "element \"%s\" is decoupled, not adding to group %p", GST_ELEMENT_NAME (element), group);
+ return;
+ }
+
+ g_assert (GST_ELEMENT_SCHED_GROUP (element) == NULL);
+
+ group->elements = g_list_prepend (group->elements, element);
+ group->num_elements++;
+
+ GST_ELEMENT_SCHED_GROUP (element) = group;
+}
+
+static GstOptSchedulerGroup*
+create_group (GstOptSchedulerChain *chain, GstElement *element)
+{
+ GstOptSchedulerGroup *group;
+
+ group = g_new0 (GstOptSchedulerGroup, 1);
+ GST_INFO (GST_CAT_SCHEDULING, "new group %p", group);
+
+ add_to_group (group, element);
+ add_to_chain (chain, group);
+
+ return group;
+}
+
+static void
+destroy_group_scheduler (GstOptSchedulerGroup *group)
+{
+ if (group->flags & GST_OPT_SCHEDULER_GROUP_RUNNING)
+ g_warning ("removing running element");
+
+ if (group->cothread) {
+ do_cothread_destroy (group->cothread);
+ }
+ else {
+ group->schedulefunc = NULL;
+ group->argc = 0;
+ group->argv = NULL;
+ }
+
+ group->flags &= ~GST_OPT_SCHEDULER_GROUP_SCHEDULABLE;
+}
+
+static void
+delete_group (GstOptSchedulerGroup *group)
+{
+ GST_INFO (GST_CAT_SCHEDULING, "delete group %p", group);
+
+ g_assert (group->chain == NULL);
+
+ if (group->flags & GST_OPT_SCHEDULER_GROUP_SCHEDULABLE)
+ destroy_group_scheduler (group);
+
+ g_list_free (group->elements);
+ g_free (group);
+}
+
+static void
+merge_groups (GstOptSchedulerGroup *group1, GstOptSchedulerGroup *group2)
+{
+ GList *walk;
+ GstOptSchedulerChain *chain1;
+ GstOptSchedulerChain *chain2;
+
+ GST_INFO (GST_CAT_SCHEDULING, "merging groups %p and %p", group1, group2);
+
+ if (group1 == group2)
+ return;
+
+ walk = group2->elements;
+ while (walk) {
+ add_to_group (group1, (GstElement *)walk->data);
+ walk = g_list_next (walk);
+ }
+
+ chain1 = group1->chain;
+ chain2 = group2->chain;
+
+ remove_from_chain (chain2, group2);
+ delete_group (group2);
+
+ merge_chains (chain1, chain2);
+}
+
+/*
+static void
+remove_from_group (GstOptSchedulerGroup *group, GstElement *element)
+{
+ GST_INFO (GST_CAT_SCHEDULING, "removing element \"%s\" to group %p", GST_ELEMENT_NAME (element), group);
+
+ group->elements = g_list_remove (group->elements, element);
+ group->num_elements--;
+
+ GST_ELEMENT_SCHED_GROUP (element) = NULL;
+}
+*/
+
+static void
+group_element_set_enabled (GstOptSchedulerGroup *group, GstElement *element, gboolean enabled)
+{
+ if (enabled) {
+ group->num_enabled++;
+ GST_INFO (GST_CAT_SCHEDULING, "enable element %s in group %p, now %d elements enabled out of %d",
+ GST_ELEMENT_NAME (element), group, group->num_enabled, group->num_elements);
+ if (group->num_enabled == group->num_elements) {
+ GST_INFO (GST_CAT_SCHEDULING, "enable group %p", group);
+ GST_OPT_SCHEDULER_GROUP_ENABLE (group);
+ chain_group_set_enabled (group->chain, group, TRUE);
+ }
+ }
+ else {
+ group->num_enabled--;
+ GST_INFO (GST_CAT_SCHEDULING, "disable element %s in group %p, now %d elements enabled out of %d",
+ GST_ELEMENT_NAME (element), group, group->num_enabled, group->num_elements);
+ if (group->num_enabled == 0) {
+ GST_INFO (GST_CAT_SCHEDULING, "disable group %p", group);
+ GST_OPT_SCHEDULER_GROUP_DISABLE (group);
+ chain_group_set_enabled (group->chain, group, FALSE);
+ }
+ }
+}
+
+static int
+schedule_group (GstOptSchedulerGroup *group)
+{
+ if (group->chain->sched->use_cothreads) {
+ if (group->cothread)
+ do_cothread_switch (group->cothread);
+ return 1;
+ }
+ else {
+ if (!(group->flags & GST_OPT_SCHEDULER_GROUP_RUNNING))
+ return group->schedulefunc (group->argc, group->argv);
+ else
+ return 0;
+ }
+}
+
+static void
+schedule_chain (GstOptSchedulerChain *chain)
+{
+ GList *groups = chain->groups;
+
+ while (groups) {
+ GstOptSchedulerGroup *group = (GstOptSchedulerGroup *) groups->data;
+ groups = g_list_next (groups);
+
+ if (!GST_OPT_SCHEDULER_GROUP_IS_DISABLED (group)) {
+ GST_INFO (GST_CAT_SCHEDULING, "scheduling group %p in chain %p",
+ group, chain);
+
+ schedule_group (group);
+
+ break;
+ }
+ }
+}
+
+static void
+gst_opt_scheduler_add_element (GstScheduler *sched, GstElement *element)
+{
+ GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+ GstOptSchedulerCtx *ctx;
+
+ GST_INFO (GST_CAT_SCHEDULING, "adding element \"%s\" to scheduler", GST_ELEMENT_NAME (element));
+
+ if (GST_ELEMENT_IS_DECOUPLED (element))
+ return;
+
+ ctx = g_new0 (GstOptSchedulerCtx, 1);
+ GST_ELEMENT_SCHED_CONTEXT (element) = ctx;
+
+ if (element->loopfunc) {
+ GstOptSchedulerGroup *group;
+ GstOptSchedulerChain *chain;
+
+ chain = create_chain (osched);
+
+ group = create_group (chain, element);
+ group->entry = element;
+ group->type = GST_OPT_SCHEDULER_GROUP_LOOP;
+
+ GST_INFO (GST_CAT_SCHEDULING, "added element \"%s\" as loop based entry", GST_ELEMENT_NAME (element));
+ }
+}
+
+static void
+gst_opt_scheduler_remove_element (GstScheduler *sched, GstElement *element)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+
+ GST_INFO (GST_CAT_SCHEDULING, "removing element \"%s\" from scheduler", GST_ELEMENT_NAME (element));
+
+ g_free (GST_ELEMENT_SCHED_CONTEXT (element));
+ GST_ELEMENT_SCHED_CONTEXT (element) = NULL;
+
+ g_warning ("remove implement me");
+}
+
+static int
+wrapper_function (int argc, char *argv[])
+{
+ GstOptSchedulerGroup *group = (GstOptSchedulerGroup *) argv;
+
+ GST_INFO (GST_CAT_SCHEDULING, "wrapper function of group %p", group);
+
+ group->flags |= GST_OPT_SCHEDULER_GROUP_RUNNING;
+
+ switch (group->type) {
+ case GST_OPT_SCHEDULER_GROUP_GET:
+ {
+ const GList *pads = gst_element_get_pad_list (group->entry);
+ GstBuffer *buffer;
+
+ while (pads) {
+ GstPad *pad = GST_PAD_CAST (pads->data);
+ pads = g_list_next (pads);
+
+ /* skip sinks and ghostpads */
+ if (!GST_PAD_IS_SRC (pad) || !GST_IS_REAL_PAD (pad))
+ continue;
+
+ GST_INFO (GST_CAT_SCHEDULING, "doing get and push on pad \"%s:%s\" in group %p",
+ GST_DEBUG_PAD_NAME (pad), group);
+
+ buffer = GST_RPAD_GETFUNC (pad) (pad);
+ if (buffer)
+ gst_pad_push (pad, buffer);
+ }
+ break;
+ }
+ case GST_OPT_SCHEDULER_GROUP_LOOP:
+ {
+ GstElement *entry = group->entry;
+
+ GST_INFO (GST_CAT_SCHEDULING, "calling loopfunc of element %s in group %p",
+ GST_ELEMENT_NAME (entry), group);
+
+ entry->loopfunc (entry);
+ break;
+ }
+ default:
+ g_warning ("(internal error) unkown group type %d, disabling\n", group->type);
+ chain_group_set_enabled (group->chain, group, FALSE);
+ group->chain->sched->state = GST_OPT_SCHEDULER_STATE_ERROR;
+ break;
+ }
+
+ group->flags &= ~GST_OPT_SCHEDULER_GROUP_RUNNING;
+
+ return 0;
+}
+
+static void
+gst_opt_scheduler_loop_wrapper (GstPad *sinkpad, GstBuffer *buffer)
+{
+ GstOptSchedulerGroup *group;
+
+ GST_INFO (GST_CAT_SCHEDULING, "loop wrapper, putting buffer in bufpen");
+
+ group = GST_ELEMENT_SCHED_GROUP (GST_PAD_PARENT (sinkpad));
+
+ GST_RPAD_BUFPEN (GST_RPAD_PEER (sinkpad)) = buffer;
+
+ while (GST_RPAD_BUFPEN (GST_RPAD_PEER (sinkpad))) {
+ if (!schedule_group (group))
+ break;
+ }
+}
+
+static GstBuffer*
+gst_opt_scheduler_get_wrapper (GstPad *srcpad)
+{
+ GstBuffer *buffer;
+
+ GST_INFO (GST_CAT_SCHEDULING, "get wrapper, removing buffer from bufpen");
+
+ buffer = GST_RPAD_BUFPEN (srcpad);
+
+ while (!buffer) {
+ GstOptSchedulerGroup *group;
+
+ group = GST_ELEMENT_SCHED_GROUP (GST_PAD_PARENT (srcpad));
+
+ schedule_group (group);
+
+ buffer = GST_RPAD_BUFPEN (srcpad);
+ }
+
+ GST_RPAD_BUFPEN (srcpad) = NULL;
+
+ return buffer;
+}
+
+static void
+gst_opt_scheduler_chain_wrapper (GstPad *sinkpad, GstBuffer *buffer)
+{
+ if (GST_IS_EVENT (buffer)) {
+ gst_pad_send_event (sinkpad, GST_EVENT (buffer));
+ }
+ else {
+ GST_RPAD_CHAINFUNC (sinkpad) (sinkpad, buffer);
+ }
+
+}
+
+static void
+setup_group_scheduler (GstOptScheduler *osched, GstOptSchedulerGroup *group)
+{
+ if (osched->use_cothreads) {
+ do_cothread_create (group->cothread, osched->context,
+ wrapper_function, 0, (char **) group);
+ }
+ else {
+ group->schedulefunc = wrapper_function;
+ group->argc = 0;
+ group->argv = (char **) group;
+ }
+
+ group->flags |= GST_OPT_SCHEDULER_GROUP_SCHEDULABLE;
+}
+
+static GstElementStateReturn
+gst_opt_scheduler_state_transition (GstScheduler *sched, GstElement *element, gint transition)
+{
+ GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+ GstOptSchedulerGroup *group;
+
+ GST_INFO (GST_CAT_SCHEDULING, "element \"%s\" state change %d", GST_ELEMENT_NAME (element), transition);
+
+ if (GST_IS_BIN (element)) {
+ if (GST_SCHEDULER_PARENT (sched) == element) {
+ GST_INFO (GST_CAT_SCHEDULING, "parent \"%s\" changed state", GST_ELEMENT_NAME (element));
+
+ switch (transition) {
+ case GST_STATE_PLAYING_TO_PAUSED:
+ GST_INFO (GST_CAT_SCHEDULING, "setting scheduler state to stopped");
+ GST_SCHEDULER_STATE (sched) = GST_SCHEDULER_STATE_STOPPED;
+ break;
+ case GST_STATE_PAUSED_TO_PLAYING:
+ GST_INFO (GST_CAT_SCHEDULING, "setting scheduler state to running");
+ GST_SCHEDULER_STATE (sched) = GST_SCHEDULER_STATE_RUNNING;
+ break;
+ default:
+ GST_INFO (GST_CAT_SCHEDULING, "no interesting state change, doing nothing");
+ }
+ }
+ return GST_STATE_SUCCESS;
+ }
+
+ if (GST_ELEMENT_IS_DECOUPLED (element))
+ return GST_STATE_SUCCESS;
+
+ group = GST_ELEMENT_SCHED_GROUP (element);
+
+ switch (transition) {
+ case GST_STATE_PAUSED_TO_PLAYING:
+ if (!(group->flags & GST_OPT_SCHEDULER_GROUP_SCHEDULABLE)) {
+ setup_group_scheduler (osched, group);
+ }
+ group_element_set_enabled (group, element, TRUE);
+ break;
+ case GST_STATE_PLAYING_TO_PAUSED:
+ group_element_set_enabled (group, element, FALSE);
+ break;
+ default:
+ break;
+ }
+
+ return GST_STATE_SUCCESS;
+}
+
+static void
+gst_opt_scheduler_lock_element (GstScheduler *sched, GstElement *element)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+}
+
+static void
+gst_opt_scheduler_unlock_element (GstScheduler *sched, GstElement *element)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+}
+
+static void
+gst_opt_scheduler_yield (GstScheduler *sched, GstElement *element)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+}
+
+static gboolean
+gst_opt_scheduler_interrupt (GstScheduler *sched, GstElement *element)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+ return TRUE;
+}
+
+static void
+gst_opt_scheduler_error (GstScheduler *sched, GstElement *element)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+}
+
+static GstOptSchedulerGroup*
+group_elements (GstOptScheduler *osched, GstElement *element1, GstElement *element2)
+{
+ GstOptSchedulerCtx *ctx1, *ctx2;
+ GstOptSchedulerGroup *group1 = NULL, *group2 = NULL, *group = NULL;
+
+ ctx1 = GST_ELEMENT_SCHED_CONTEXT (element1);
+ if (ctx1)
+ group1 = ctx1->group;
+ ctx2 = GST_ELEMENT_SCHED_CONTEXT (element2);
+ if (ctx2)
+ group2 = ctx2->group;
+
+ if (!group1 && !group2) {
+ GstOptSchedulerChain *chain;
+
+ GST_INFO (GST_CAT_SCHEDULING, "creating new group to hold \"%s\" and \"%s\"",
+ GST_ELEMENT_NAME (element1), GST_ELEMENT_NAME (element2));
+
+ chain = create_chain (osched);
+ group = create_group (chain, element1);
+ add_to_group (group, element2);
+ }
+ else if (group1) {
+ GST_INFO (GST_CAT_SCHEDULING, "adding \"%s\" to \"%s\"'s group",
+ GST_ELEMENT_NAME (element2), GST_ELEMENT_NAME (element1));
+ if (group2)
+ merge_groups (group1, group2);
+ else
+ add_to_group (group1, element2);
+
+ group = group1;
+ }
+ else {
+ GST_INFO (GST_CAT_SCHEDULING, "adding \"%s\" to \"%s\"'s group",
+ GST_ELEMENT_NAME (element1), GST_ELEMENT_NAME (element2));
+ add_to_group (group2, element1);
+ group = group2;
+ }
+ return group;
+}
+
+typedef enum {
+ GST_OPT_INVALID,
+ GST_OPT_GET_TO_CHAIN,
+ GST_OPT_LOOP_TO_CHAIN,
+ GST_OPT_GET_TO_LOOP,
+ GST_OPT_CHAIN_TO_CHAIN,
+ GST_OPT_CHAIN_TO_LOOP,
+ GST_OPT_LOOP_TO_LOOP,
+} ConnectionType;
+
+static void
+gst_opt_scheduler_pad_connect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad)
+{
+ GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+ ConnectionType type = GST_OPT_INVALID;
+ GstElement *element1, *element2;
+
+ GST_INFO (GST_CAT_SCHEDULING, "pad connect between \"%s:%s\" and \"%s:%s\"",
+ GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad));
+
+ element1 = GST_PAD_PARENT (srcpad);
+ element2 = GST_PAD_PARENT (sinkpad);
+
+ if (element1->loopfunc && element2->loopfunc)
+ type = GST_OPT_LOOP_TO_LOOP;
+ else {
+ if (element1->loopfunc) {
+ if (GST_RPAD_CHAINFUNC (sinkpad))
+ type = GST_OPT_LOOP_TO_CHAIN;
+ }
+ else if (element2->loopfunc) {
+ if (GST_RPAD_GETFUNC (srcpad))
+ type = GST_OPT_GET_TO_LOOP;
+ else
+ type = GST_OPT_CHAIN_TO_LOOP;
+ }
+ else {
+ if (GST_RPAD_GETFUNC (srcpad) && GST_RPAD_CHAINFUNC (sinkpad))
+ type = GST_OPT_GET_TO_CHAIN;
+ else
+ type = GST_OPT_CHAIN_TO_CHAIN;
+ }
+ }
+
+ switch (type) {
+ case GST_OPT_GET_TO_CHAIN:
+ {
+ GstOptSchedulerGroup *group = NULL;
+
+ GST_INFO (GST_CAT_SCHEDULING, "get to chain based connection");
+
+ GST_RPAD_GETHANDLER (srcpad) = GST_RPAD_GETFUNC (srcpad);
+ if (GST_ELEMENT_IS_EVENT_AWARE (element2))
+ GST_RPAD_CHAINHANDLER (sinkpad) = GST_RPAD_CHAINFUNC (sinkpad);
+ else
+ GST_RPAD_CHAINHANDLER (sinkpad) = gst_opt_scheduler_chain_wrapper;
+
+ group = group_elements (osched, element1, element2);
+
+ if (!group->entry) {
+ group->entry = element1;
+ group->type = GST_OPT_SCHEDULER_GROUP_GET;
+
+ GST_INFO (GST_CAT_SCHEDULING, "setting \"%s\" as entry point of _get-based group %p",
+ GST_ELEMENT_NAME (element1), group);
+ }
+ break;
+ }
+ case GST_OPT_LOOP_TO_CHAIN:
+ case GST_OPT_CHAIN_TO_CHAIN:
+ GST_INFO (GST_CAT_SCHEDULING, "loop/chain to chain based connection");
+
+ if (GST_ELEMENT_IS_EVENT_AWARE (element2))
+ GST_RPAD_CHAINHANDLER (sinkpad) = GST_RPAD_CHAINFUNC (sinkpad);
+ else
+ GST_RPAD_CHAINHANDLER (sinkpad) = gst_opt_scheduler_chain_wrapper;
+
+ group_elements (osched, element1, element2);
+ break;
+ case GST_OPT_GET_TO_LOOP:
+ GST_INFO (GST_CAT_SCHEDULING, "get to loop based connection");
+
+ GST_RPAD_GETHANDLER (srcpad) = GST_RPAD_GETFUNC (srcpad);
+ group_elements (osched, element1, element2);
+ break;
+ case GST_OPT_CHAIN_TO_LOOP:
+ case GST_OPT_LOOP_TO_LOOP:
+ {
+ GstOptSchedulerGroup *group1, *group2;
+
+ GST_INFO (GST_CAT_SCHEDULING, "chain/loop to loop based connection");
+
+ GST_RPAD_CHAINHANDLER (sinkpad) = gst_opt_scheduler_loop_wrapper;
+ GST_RPAD_GETHANDLER (srcpad) = gst_opt_scheduler_get_wrapper;
+
+ group1 = GST_ELEMENT_SCHED_GROUP (element1);
+ group2 = GST_ELEMENT_SCHED_GROUP (element2);
+ if (!group1) {
+ GST_INFO (GST_CAT_SCHEDULING, "creating new group for element %s", GST_ELEMENT_NAME (element1));
+ group1 = create_group (group2->chain, element1);
+ }
+ else {
+ merge_chains (group1->chain, group2->chain);
+ }
+ break;
+ }
+ case GST_OPT_INVALID:
+ g_warning ("(internal error) invalid element connection");
+ break;
+ }
+}
+
+static void
+gst_opt_scheduler_pad_disconnect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+ GST_INFO (GST_CAT_SCHEDULING, "pad disconnect between \"%s:%s\" and \"%s:%s\"",
+ GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad));
+
+ g_warning ("pad disconnect, implement me");
+}
+
+static GstPad*
+gst_opt_scheduler_pad_select (GstScheduler *sched, GList *padlist)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+ return NULL;
+}
+
+static GstClockReturn
+gst_opt_scheduler_clock_wait (GstScheduler *sched, GstElement *element,
+ GstClock *clock, GstClockTime time, GstClockTimeDiff *jitter)
+{
+ return gst_clock_wait (clock, time, jitter);
+}
+
+static GstSchedulerState
+gst_opt_scheduler_iterate (GstScheduler *sched)
+{
+ GstSchedulerState state;
+ GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+ GList *chains;
+ gboolean scheduled = FALSE;
+
+ osched->state = GST_OPT_SCHEDULER_STATE_RUNNING;
+
+ chains = osched->chains;
+ while (chains) {
+ GstOptSchedulerChain *chain = (GstOptSchedulerChain *) chains->data;
+ chains = g_list_next (chains);
+
+ if (!GST_OPT_SCHEDULER_CHAIN_IS_DISABLED (chain)) {
+ schedule_chain (chain);
+ scheduled = TRUE;
+ }
+ }
+
+ if (osched->state == GST_OPT_SCHEDULER_STATE_ERROR) {
+ state = GST_SCHEDULER_STATE_ERROR;
+ }
+ else {
+ if (scheduled)
+ state = GST_SCHEDULER_STATE (sched);
+ else
+ state = GST_SCHEDULER_STATE_STOPPED;
+ }
+
+ return state;
+}
+
+
+static void
+gst_opt_scheduler_show (GstScheduler *sched)
+{
+ //GstOptScheduler *osched = GST_OPT_SCHEDULER_CAST (sched);
+}
projects / platform / upstream / gstreamer.git / commitdiff