*/
/**
* SECTION:gstpad
+ * @title: GstPad
* @short_description: Object contained by elements that allows links to
* other elements
* @see_also: #GstPadTemplate, #GstElement, #GstEvent, #GstQuery, #GstBuffer
/* FILL ME */
};
-#define GST_PAD_GET_PRIVATE(obj) \
- (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_PAD, GstPadPrivate))
+#define _PAD_PROBE_TYPE_ALL_BOTH_AND_FLUSH (GST_PAD_PROBE_TYPE_ALL_BOTH | GST_PAD_PROBE_TYPE_EVENT_FLUSH)
/* we have a pending and an active event on the pad. On source pads only the
* active event is used. On sinkpads, events are copied to the pending entry and
gint using;
guint probe_list_cookie;
- guint probe_cookie;
/* counter of how many idle probes are running directly from the add_probe
* call. Used to block any data flowing in the pad while the idle callback
* Doesn't finish its work */
gint idle_running;
+
+ /* conditional and variable used to ensure pads only get (de)activated
+ * by a single thread at a time. Protected by the object lock */
+ GCond activation_cond;
+ gboolean in_activation;
};
typedef struct
{
GHook hook;
- guint cookie;
} GstProbe;
-#define PROBE_COOKIE(h) (((GstProbe *)(h))->cookie)
#define GST_PAD_IS_RUNNING_IDLE_PROBE(p) \
(((GstPad *)(p))->priv->idle_running > 0)
gboolean pass;
gboolean handled;
gboolean marshalled;
- guint cookie;
+
+ gulong *called_probes;
+ guint n_called_probes;
+ guint called_probes_size;
+ gboolean retry;
} ProbeMarshall;
static void gst_pad_dispose (GObject * object);
static GstFlowReturn gst_pad_push_event_unchecked (GstPad * pad,
GstEvent * event, GstPadProbeType type);
+static gboolean activate_mode_internal (GstPad * pad, GstObject * parent,
+ GstPadMode mode, gboolean active);
+
static guint gst_pad_signals[LAST_SIGNAL] = { 0 };
static GParamSpec *pspec_caps = NULL;
}
#define gst_pad_parent_class parent_class
-G_DEFINE_TYPE_WITH_CODE (GstPad, gst_pad, GST_TYPE_OBJECT, _do_init);
+G_DEFINE_TYPE_WITH_CODE (GstPad, gst_pad, GST_TYPE_OBJECT,
+ G_ADD_PRIVATE (GstPad) _do_init);
static void
gst_pad_class_init (GstPadClass * klass)
gobject_class = G_OBJECT_CLASS (klass);
gstobject_class = GST_OBJECT_CLASS (klass);
- g_type_class_add_private (klass, sizeof (GstPadPrivate));
-
gobject_class->dispose = gst_pad_dispose;
gobject_class->finalize = gst_pad_finalize;
gobject_class->set_property = gst_pad_set_property;
static void
gst_pad_init (GstPad * pad)
{
- pad->priv = GST_PAD_GET_PRIVATE (pad);
+ pad->priv = gst_pad_get_instance_private (pad);
GST_PAD_DIRECTION (pad) = GST_PAD_UNKNOWN;
pad->priv->events = g_array_sized_new (FALSE, TRUE, sizeof (PadEvent), 16);
pad->priv->events_cookie = 0;
pad->priv->last_cookie = -1;
+ g_cond_init (&pad->priv->activation_cond);
+
pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
}
if (G_UNLIKELY (ev->event == NULL))
goto next;
- /* take aditional ref, func might release the lock */
+ /* take additional ref, func might release the lock */
ev_ret.event = gst_event_ref (ev->event);
ev_ret.received = ev->received;
/* should be called with LOCK */
static GstEvent *
-_apply_pad_offset (GstPad * pad, GstEvent * event, gboolean upstream)
+_apply_pad_offset (GstPad * pad, GstEvent * event, gboolean upstream,
+ gint64 pad_offset)
{
gint64 offset;
- GST_DEBUG_OBJECT (pad, "apply pad offset %" GST_TIME_FORMAT,
- GST_TIME_ARGS (pad->offset));
+ GST_DEBUG_OBJECT (pad, "apply pad offset %" GST_STIME_FORMAT,
+ GST_STIME_ARGS (pad_offset));
if (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
GstSegment segment;
gst_event_copy_segment (event, &segment);
gst_event_unref (event);
- gst_segment_offset_running_time (&segment, segment.format, pad->offset);
+ gst_segment_offset_running_time (&segment, segment.format, pad_offset);
event = gst_event_new_segment (&segment);
}
event = gst_event_make_writable (event);
offset = gst_event_get_running_time_offset (event);
if (upstream)
- offset -= pad->offset;
+ offset -= pad_offset;
else
- offset += pad->offset;
+ offset += pad_offset;
gst_event_set_running_time_offset (event, offset);
return event;
apply_pad_offset (GstPad * pad, GstEvent * event, gboolean upstream)
{
if (G_UNLIKELY (pad->offset != 0))
- return _apply_pad_offset (pad, event, upstream);
+ return _apply_pad_offset (pad, event, upstream, pad->offset);
return event;
}
-
/* should be called with the OBJECT_LOCK */
static GstCaps *
get_pad_caps (GstPad * pad)
GstPad *pad = GST_PAD_CAST (object);
GstPad *peer;
- GST_CAT_DEBUG_OBJECT (GST_CAT_REFCOUNTING, pad, "dispose");
+ GST_CAT_DEBUG_OBJECT (GST_CAT_REFCOUNTING, pad, "%p dispose", pad);
/* unlink the peer pad */
if ((peer = gst_pad_get_peer (pad))) {
g_rec_mutex_clear (&pad->stream_rec_lock);
g_cond_clear (&pad->block_cond);
+ g_cond_clear (&pad->priv->activation_cond);
g_array_free (pad->priv->events, TRUE);
G_OBJECT_CLASS (parent_class)->finalize (object);
* will be assigned.
* This function makes a copy of the name so you can safely free the name.
*
- * Returns: (transfer floating) (nullable): a new #GstPad, or %NULL in
- * case of an error.
+ * Returns: (transfer floating): a new #GstPad.
*
* MT safe.
*/
* will be assigned.
* This function makes a copy of the name so you can safely free the name.
*
- * Returns: (transfer floating) (nullable): a new #GstPad, or %NULL in
- * case of an error.
+ * Returns: (transfer floating): a new #GstPad.
*/
GstPad *
gst_pad_new_from_template (GstPadTemplate * templ, const gchar * name)
{
+ GType pad_type =
+ GST_PAD_TEMPLATE_GTYPE (templ) ==
+ G_TYPE_NONE ? GST_TYPE_PAD : GST_PAD_TEMPLATE_GTYPE (templ);
+
g_return_val_if_fail (GST_IS_PAD_TEMPLATE (templ), NULL);
- return g_object_new (GST_TYPE_PAD,
+ return g_object_new (pad_type,
"name", name, "direction", templ->direction, "template", templ, NULL);
}
* will be assigned.
* This function makes a copy of the name so you can safely free the name.
*
- * Returns: (transfer floating) (nullable): a new #GstPad, or %NULL in
- * case of an error.
+ * Returns: (transfer floating): a new #GstPad.
*/
GstPad *
gst_pad_new_from_static_template (GstStaticPadTemplate * templ,
static gboolean
gst_pad_activate_default (GstPad * pad, GstObject * parent)
{
- return gst_pad_activate_mode (pad, GST_PAD_MODE_PUSH, TRUE);
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+
+ return activate_mode_internal (pad, parent, GST_PAD_MODE_PUSH, TRUE);
}
/**
return "unknown";
}
-static void
+/* Returns TRUE if pad wasn't already in the new_mode */
+static gboolean
pre_activate (GstPad * pad, GstPadMode new_mode)
{
switch (new_mode) {
case GST_PAD_MODE_NONE:
GST_OBJECT_LOCK (pad);
+ while (G_UNLIKELY (pad->priv->in_activation))
+ g_cond_wait (&pad->priv->activation_cond, GST_OBJECT_GET_LOCK (pad));
+ if (new_mode == GST_PAD_MODE (pad)) {
+ GST_WARNING_OBJECT (pad,
+ "Pad is already in the process of being deactivated");
+ GST_OBJECT_UNLOCK (pad);
+ return FALSE;
+ }
+ pad->priv->in_activation = TRUE;
GST_DEBUG_OBJECT (pad, "setting PAD_MODE NONE, set flushing");
GST_PAD_SET_FLUSHING (pad);
pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
case GST_PAD_MODE_PUSH:
case GST_PAD_MODE_PULL:
GST_OBJECT_LOCK (pad);
+ while (G_UNLIKELY (pad->priv->in_activation))
+ g_cond_wait (&pad->priv->activation_cond, GST_OBJECT_GET_LOCK (pad));
+ if (new_mode == GST_PAD_MODE (pad)) {
+ GST_WARNING_OBJECT (pad,
+ "Pad is already in the process of being activated");
+ GST_OBJECT_UNLOCK (pad);
+ return FALSE;
+ }
+ pad->priv->in_activation = TRUE;
GST_DEBUG_OBJECT (pad, "setting pad into %s mode, unset flushing",
gst_pad_mode_get_name (new_mode));
GST_PAD_UNSET_FLUSHING (pad);
}
break;
}
+ return TRUE;
}
static void
{
switch (new_mode) {
case GST_PAD_MODE_NONE:
+ GST_OBJECT_LOCK (pad);
+ pad->priv->in_activation = FALSE;
+ g_cond_broadcast (&pad->priv->activation_cond);
+ GST_OBJECT_UNLOCK (pad);
+
/* ensures that streaming stops */
GST_PAD_STREAM_LOCK (pad);
GST_DEBUG_OBJECT (pad, "stopped streaming");
break;
case GST_PAD_MODE_PUSH:
case GST_PAD_MODE_PULL:
+ GST_OBJECT_LOCK (pad);
+ pad->priv->in_activation = FALSE;
+ g_cond_broadcast (&pad->priv->activation_cond);
+ GST_OBJECT_UNLOCK (pad);
/* NOP */
break;
}
} else {
GST_DEBUG_OBJECT (pad, "deactivating pad from %s mode",
gst_pad_mode_get_name (old));
- ret = gst_pad_activate_mode (pad, old, FALSE);
+ ret = activate_mode_internal (pad, parent, old, FALSE);
if (ret)
pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
}
}
}
-/**
- * gst_pad_activate_mode:
- * @pad: the #GstPad to activate or deactivate.
- * @mode: the requested activation mode
- * @active: whether or not the pad should be active.
- *
- * Activates or deactivates the given pad in @mode via dispatching to the
- * pad's activatemodefunc. For use from within pad activation functions only.
- *
- * If you don't know what this is, you probably don't want to call it.
- *
- * Returns: %TRUE if the operation was successful.
- *
- * MT safe.
- */
-gboolean
-gst_pad_activate_mode (GstPad * pad, GstPadMode mode, gboolean active)
+static gboolean
+activate_mode_internal (GstPad * pad, GstObject * parent, GstPadMode mode,
+ gboolean active)
{
gboolean res = FALSE;
- GstObject *parent;
GstPadMode old, new;
GstPadDirection dir;
GstPad *peer;
- g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
-
GST_OBJECT_LOCK (pad);
old = GST_PAD_MODE (pad);
dir = GST_PAD_DIRECTION (pad);
- ACQUIRE_PARENT (pad, parent, no_parent);
GST_OBJECT_UNLOCK (pad);
new = active ? mode : GST_PAD_MODE_NONE;
GST_DEBUG_OBJECT (pad, "deactivating pad from %s mode",
gst_pad_mode_get_name (old));
- if (G_UNLIKELY (!gst_pad_activate_mode (pad, old, FALSE)))
+ if (G_UNLIKELY (!activate_mode_internal (pad, parent, old, FALSE)))
goto deactivate_failed;
+ old = GST_PAD_MODE_NONE;
}
switch (mode) {
/* Mark pad as needing reconfiguration */
if (active)
GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_NEED_RECONFIGURE);
- pre_activate (pad, new);
- if (GST_PAD_ACTIVATEMODEFUNC (pad)) {
- if (G_UNLIKELY (!GST_PAD_ACTIVATEMODEFUNC (pad) (pad, parent, mode,
- active)))
- goto failure;
- } else {
- /* can happen for sinks of passthrough elements */
- }
+ /* pre_activate returns TRUE if we weren't already in the process of
+ * switching to the 'new' mode */
+ if (pre_activate (pad, new)) {
+
+ if (GST_PAD_ACTIVATEMODEFUNC (pad)) {
+ if (G_UNLIKELY (!GST_PAD_ACTIVATEMODEFUNC (pad) (pad, parent, mode,
+ active)))
+ goto failure;
+ } else {
+ /* can happen for sinks of passthrough elements */
+ }
- post_activate (pad, new);
+ post_activate (pad, new);
+ }
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "%s in %s mode",
active ? "activated" : "deactivated", gst_pad_mode_get_name (mode));
}
exit:
- RELEASE_PARENT (parent);
-
return res;
-no_parent:
- {
- GST_DEBUG_OBJECT (pad, "no parent");
- GST_OBJECT_UNLOCK (pad);
- return FALSE;
- }
was_ok:
{
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "already %s in %s mode",
active ? "activate" : "deactivate", gst_pad_mode_get_name (mode));
GST_PAD_SET_FLUSHING (pad);
GST_PAD_MODE (pad) = old;
+ pad->priv->in_activation = FALSE;
+ g_cond_broadcast (&pad->priv->activation_cond);
GST_OBJECT_UNLOCK (pad);
goto exit;
}
}
/**
+ * gst_pad_activate_mode:
+ * @pad: the #GstPad to activate or deactivate.
+ * @mode: the requested activation mode
+ * @active: whether or not the pad should be active.
+ *
+ * Activates or deactivates the given pad in @mode via dispatching to the
+ * pad's activatemodefunc. For use from within pad activation functions only.
+ *
+ * If you don't know what this is, you probably don't want to call it.
+ *
+ * Returns: %TRUE if the operation was successful.
+ *
+ * MT safe.
+ */
+gboolean
+gst_pad_activate_mode (GstPad * pad, GstPadMode mode, gboolean active)
+{
+ GstObject *parent;
+ gboolean res;
+ GstPadMode old, new;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+
+ GST_OBJECT_LOCK (pad);
+
+ old = GST_PAD_MODE (pad);
+ new = active ? mode : GST_PAD_MODE_NONE;
+ if (old == new)
+ goto was_ok;
+
+ ACQUIRE_PARENT (pad, parent, no_parent);
+
+ GST_OBJECT_UNLOCK (pad);
+
+ res = activate_mode_internal (pad, parent, mode, active);
+
+ RELEASE_PARENT (parent);
+
+ return res;
+
+was_ok:
+ {
+ GST_OBJECT_UNLOCK (pad);
+ GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "already %s in %s mode",
+ active ? "activated" : "deactivated", gst_pad_mode_get_name (mode));
+ return TRUE;
+ }
+no_parent:
+ {
+ GST_WARNING_OBJECT (pad, "no parent");
+ GST_OBJECT_UNLOCK (pad);
+ return FALSE;
+ }
+}
+
+/**
* gst_pad_is_active:
* @pad: the #GstPad to query
*
{
GstPadProbeType type;
+ GST_DEBUG_OBJECT (pad,
+ "cleaning up hook %lu with flags %08x", hook->hook_id, hook->flags);
+
if (!G_HOOK_IS_VALID (hook))
return;
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad, "adding probe for mask 0x%08x",
mask);
- /* when no contraints are given for the types, assume all types are
+ /* when no constraints are given for the types, assume all types are
* acceptable */
- if ((mask & GST_PAD_PROBE_TYPE_ALL_BOTH) == 0)
+ if ((mask & _PAD_PROBE_TYPE_ALL_BOTH_AND_FLUSH) == 0)
mask |= GST_PAD_PROBE_TYPE_ALL_BOTH;
if ((mask & GST_PAD_PROBE_TYPE_SCHEDULING) == 0)
mask |= GST_PAD_PROBE_TYPE_SCHEDULING;
hook->func = callback;
hook->data = user_data;
hook->destroy = destroy_data;
- PROBE_COOKIE (hook) = (pad->priv->probe_cookie - 1);
/* add the probe */
g_hook_append (&pad->probes, hook);
pad->num_probes++;
- /* incremenent cookie so that the new hook get's called */
+ /* incremenent cookie so that the new hook gets called */
pad->priv->probe_list_cookie++;
/* get the id of the hook, we return this and it can be used to remove the
GST_DEBUG_FUNCPTR_NAME (event));
}
+static gboolean
+event_wrap (GstPad * pad, GstObject * object, GstEvent * event)
+{
+ GstFlowReturn ret;
+
+ ret = GST_PAD_EVENTFULLFUNC (pad) (pad, object, event);
+ if (ret == GST_FLOW_OK)
+ return TRUE;
+ return FALSE;
+}
+
+/**
+ * gst_pad_set_event_full_function:
+ * @p: a #GstPad of either direction.
+ * @f: the #GstPadEventFullFunction to set.
+ *
+ * Calls gst_pad_set_event_full_function_full() with %NULL for the user_data and
+ * notify.
+ */
+/**
+ * gst_pad_set_event_full_function_full:
+ * @pad: a #GstPad of either direction.
+ * @event: the #GstPadEventFullFunction to set.
+ * @user_data: user_data passed to @notify
+ * @notify: notify called when @event will not be used anymore.
+ *
+ * Sets the given event handler for the pad.
+ *
+ * Since: 1.8
+ */
+void
+gst_pad_set_event_full_function_full (GstPad * pad,
+ GstPadEventFullFunction event, gpointer user_data, GDestroyNotify notify)
+{
+ g_return_if_fail (GST_IS_PAD (pad));
+
+ if (pad->eventnotify)
+ pad->eventnotify (pad->eventdata);
+ GST_PAD_EVENTFULLFUNC (pad) = event;
+ GST_PAD_EVENTFUNC (pad) = event_wrap;
+ pad->eventdata = user_data;
+ pad->eventnotify = notify;
+
+ GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "eventfullfunc for set to %s",
+ GST_DEBUG_FUNCPTR_NAME (event));
+}
+
/**
* gst_pad_set_query_function:
* @p: a #GstPad of either direction.
*
* Sets the given unlink function for the pad. It will be called
* when the pad is unlinked.
+ *
+ * Note that the pad's lock is already held when the unlink
+ * function is called, so most pad functions cannot be called
+ * from within the callback.
*/
void
gst_pad_set_unlink_function_full (GstPad * pad, GstPadUnlinkFunction unlink,
g_return_val_if_fail (GST_PAD_IS_SINK (sinkpad),
GST_PAD_LINK_WRONG_DIRECTION);
+ GST_TRACER_PAD_LINK_PRE (srcpad, sinkpad);
+
/* Notify the parent early. See gst_pad_unlink for details. */
if (G_LIKELY ((parent = GST_ELEMENT_CAST (gst_pad_get_parent (srcpad))))) {
if (G_LIKELY (GST_IS_ELEMENT (parent))) {
GST_CAT_INFO (GST_CAT_PADS, "linked %s:%s and %s:%s, successful",
GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad));
- gst_pad_send_event (srcpad, gst_event_new_reconfigure ());
+ if (!(flags & GST_PAD_LINK_CHECK_NO_RECONFIGURE))
+ gst_pad_send_event (srcpad, gst_event_new_reconfigure ());
done:
if (G_LIKELY (parent)) {
gst_object_unref (parent);
}
+ GST_TRACER_PAD_LINK_POST (srcpad, sinkpad, result);
return result;
/* ERRORS */
GstPadLinkReturn
gst_pad_link (GstPad * srcpad, GstPad * sinkpad)
{
- GstPadLinkReturn ret;
-
- GST_TRACER_PAD_LINK_PRE (srcpad, sinkpad);
- ret = gst_pad_link_full (srcpad, sinkpad, GST_PAD_LINK_CHECK_DEFAULT);
- GST_TRACER_PAD_LINK_POST (srcpad, sinkpad, ret);
-
- return ret;
+ return gst_pad_link_full (srcpad, sinkpad, GST_PAD_LINK_CHECK_DEFAULT);
}
static void
* Gets the capabilities currently configured on @pad with the last
* #GST_EVENT_CAPS event.
*
- * Returns: the current caps of the pad with incremented ref-count.
+ * Returns: (transfer full) (nullable): the current caps of the pad with
+ * incremented ref-count or %NULL when pad has no caps. Unref after usage.
*/
GstCaps *
gst_pad_get_current_caps (GstPad * pad)
* Gets the peer of @pad. This function refs the peer pad so
* you need to unref it after use.
*
- * Returns: (transfer full): the peer #GstPad. Unref after usage.
+ * Returns: (transfer full) (nullable): the peer #GstPad. Unref after usage.
*
* MT safe.
*/
/* Query peer caps */
query = gst_query_new_caps (mycaps);
- gst_pad_peer_query (pad, query);
+ if (!gst_pad_peer_query (pad, query)) {
+ GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "Caps query failed");
+ goto end;
+ }
+
gst_query_parse_caps_result (query, &caps);
+ if (caps == NULL) {
+ g_warn_if_fail (caps != NULL);
+ goto end;
+ }
gst_caps_ref (caps);
- gst_query_unref (query);
-
- gst_caps_unref (mycaps);
GST_CAT_DEBUG_OBJECT (GST_CAT_CAPS, pad, "allowed caps %" GST_PTR_FORMAT,
caps);
+end:
+ gst_query_unref (query);
+ gst_caps_unref (mycaps);
+
return caps;
no_peer:
gst_query_parse_accept_caps (query, &caps);
if (!allowed) {
- GST_CAT_DEBUG_OBJECT (GST_CAT_PERFORMANCE, pad,
- "fallback ACCEPT_CAPS query, consider implementing a specialized version");
- if (GST_PAD_IS_ACCEPT_TEMPLATE (pad))
+ if (GST_PAD_IS_ACCEPT_TEMPLATE (pad)) {
allowed = gst_pad_get_pad_template_caps (pad);
- else
+ } else {
+ GST_CAT_DEBUG_OBJECT (GST_CAT_PERFORMANCE, pad,
+ "fallback ACCEPT_CAPS query, consider implementing a specialized version");
allowed = gst_pad_query_caps (pad, caps);
+ }
}
if (allowed) {
ret = gst_pad_query_latency_default (pad, query);
forward = FALSE;
break;
+ case GST_QUERY_BITRATE:
+ /* FIXME: better default handling */
+ forward = TRUE;
+ break;
case GST_QUERY_POSITION:
case GST_QUERY_SEEKING:
case GST_QUERY_FORMATS:
return ret;
}
+#define N_STACK_ALLOCATE_PROBES (16)
+
static void
probe_hook_marshal (GHook * hook, ProbeMarshall * data)
{
GstPadProbeCallback callback;
GstPadProbeReturn ret;
gpointer original_data;
+ guint i;
- /* if we have called this callback, do nothing */
- if (PROBE_COOKIE (hook) == data->cookie) {
- GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
- "hook %lu, cookie %u already called", hook->hook_id,
- PROBE_COOKIE (hook));
- return;
+ /* if we have called this callback, do nothing. But only check
+ * if we're actually calling probes a second time */
+ if (data->retry) {
+ for (i = 0; i < data->n_called_probes; i++) {
+ if (data->called_probes[i] == hook->hook_id) {
+ GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
+ "hook %lu already called", hook->hook_id);
+ return;
+ }
+ }
}
- PROBE_COOKIE (hook) = data->cookie;
+ /* reallocate on the heap if we had more than 16 probes */
+ if (data->n_called_probes == data->called_probes_size) {
+ if (data->called_probes_size > N_STACK_ALLOCATE_PROBES) {
+ data->called_probes_size *= 2;
+ data->called_probes =
+ g_renew (gulong, data->called_probes, data->called_probes_size);
+ } else {
+ gulong *tmp = data->called_probes;
+
+ data->called_probes_size *= 2;
+ data->called_probes = g_new (gulong, data->called_probes_size);
+ memcpy (data->called_probes, tmp,
+ N_STACK_ALLOCATE_PROBES * sizeof (gulong));
+ }
+ }
+ data->called_probes[data->n_called_probes++] = hook->hook_id;
flags = hook->flags >> G_HOOK_FLAG_USER_SHIFT;
type = info->type;
original_data = info->data;
- /* one of the data types for non-idle probes */
- if ((type & GST_PAD_PROBE_TYPE_IDLE) == 0
- && (flags & GST_PAD_PROBE_TYPE_ALL_BOTH & type) == 0)
- goto no_match;
/* one of the scheduling types */
if ((flags & GST_PAD_PROBE_TYPE_SCHEDULING & type) == 0)
goto no_match;
+
+ if (G_UNLIKELY (data->handled)) {
+ GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
+ "probe previously returned HANDLED, not calling again");
+ goto no_match;
+ } else if (G_UNLIKELY (data->dropped)) {
+ GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
+ "probe previously returned DROPPED, not calling again");
+ goto no_match;
+ }
+
+ if (type & GST_PAD_PROBE_TYPE_PUSH) {
+ /* one of the data types for non-idle probes */
+ if ((type & GST_PAD_PROBE_TYPE_IDLE) == 0
+ && (flags & _PAD_PROBE_TYPE_ALL_BOTH_AND_FLUSH & type) == 0)
+ goto no_match;
+ } else if (type & GST_PAD_PROBE_TYPE_PULL) {
+ /* one of the data types for non-idle probes */
+ if ((type & GST_PAD_PROBE_TYPE_BLOCKING) == 0
+ && (flags & _PAD_PROBE_TYPE_ALL_BOTH_AND_FLUSH & type) == 0)
+ goto no_match;
+ } else {
+ /* Type must have PULL or PUSH probe types */
+ g_assert_not_reached ();
+ }
+
/* one of the blocking types must match */
if ((type & GST_PAD_PROBE_TYPE_BLOCKING) &&
(flags & GST_PAD_PROBE_TYPE_BLOCKING & type) == 0)
goto no_match;
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
- "hook %lu, cookie %u with flags 0x%08x matches", hook->hook_id,
- PROBE_COOKIE (hook), flags);
+ "hook %lu with flags 0x%08x matches", hook->hook_id, flags);
data->marshalled = TRUE;
info->id = hook->hook_id;
+ if ((flags & GST_PAD_PROBE_TYPE_IDLE))
+ pad->priv->idle_running++;
+
GST_OBJECT_UNLOCK (pad);
ret = callback (pad, info, hook->data);
GST_OBJECT_LOCK (pad);
- if (original_data != NULL && info->data == NULL) {
+ if ((flags & GST_PAD_PROBE_TYPE_IDLE))
+ pad->priv->idle_running--;
+
+ if (ret != GST_PAD_PROBE_HANDLED && original_data != NULL
+ && info->data == NULL) {
GST_DEBUG_OBJECT (pad, "data item in pad probe info was dropped");
info->type = GST_PAD_PROBE_TYPE_INVALID;
data->dropped = TRUE;
no_match:
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
- "hook %lu, cookie %u with flags 0x%08x does not match %08x",
- hook->hook_id, PROBE_COOKIE (hook), flags, info->type);
+ "hook %lu with flags 0x%08x does not match %08x",
+ hook->hook_id, flags, info->type);
return;
}
}
ProbeMarshall data;
guint cookie;
gboolean is_block;
+ gulong called_probes[N_STACK_ALLOCATE_PROBES];
data.pad = pad;
data.info = info;
data.handled = FALSE;
data.marshalled = FALSE;
data.dropped = FALSE;
- data.cookie = ++pad->priv->probe_cookie;
+
+ /* We stack-allocate for N_STACK_ALLOCATE_PROBES hooks as a first step. If more are needed,
+ * we will re-allocate with g_malloc(). This should usually never be needed
+ */
+ data.called_probes = called_probes;
+ data.n_called_probes = 0;
+ data.called_probes_size = N_STACK_ALLOCATE_PROBES;
+ data.retry = FALSE;
is_block =
(info->type & GST_PAD_PROBE_TYPE_BLOCK) == GST_PAD_PROBE_TYPE_BLOCK;
}
again:
- GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
- "do probes cookie %u", data.cookie);
+ GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad, "do probes");
cookie = pad->priv->probe_list_cookie;
g_hook_list_marshal (&pad->probes, TRUE,
(GHookMarshaller) probe_hook_marshal, &data);
- /* if the list changed, call the new callbacks (they will not have their
- * cookie set to data.cookie */
+ /* if the list changed, call the new callbacks (they will not be in
+ * called_probes yet) */
if (cookie != pad->priv->probe_list_cookie) {
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"probe list changed, restarting");
+ data.retry = TRUE;
goto again;
}
GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_BLOCKING);
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad, "We got unblocked");
- /* if the list changed, call the new callbacks (they will not have their
- * cookie set to data.cookie */
+ /* if the list changed, call the new callbacks (they will not be in
+ * called_probes yet) */
if (cookie != pad->priv->probe_list_cookie) {
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"probe list changed, restarting");
+ data.retry = TRUE;
goto again;
}
}
}
+ if (data.called_probes_size > N_STACK_ALLOCATE_PROBES)
+ g_free (data.called_probes);
+
return defaultval;
/* ERRORS */
flushing:
{
GST_DEBUG_OBJECT (pad, "pad is flushing");
+ if (data.called_probes_size > N_STACK_ALLOCATE_PROBES)
+ g_free (data.called_probes);
return GST_FLOW_FLUSHING;
}
dropped:
{
GST_DEBUG_OBJECT (pad, "data is dropped");
+ if (data.called_probes_size > N_STACK_ALLOCATE_PROBES)
+ g_free (data.called_probes);
return GST_FLOW_CUSTOM_SUCCESS;
}
passed:
{
/* FIXME : Should we return FLOW_OK or the defaultval ?? */
GST_DEBUG_OBJECT (pad, "data is passed");
+ if (data.called_probes_size > N_STACK_ALLOCATE_PROBES)
+ g_free (data.called_probes);
return GST_FLOW_OK;
}
handled:
{
GST_DEBUG_OBJECT (pad, "data was handled");
+ if (data.called_probes_size > N_STACK_ALLOCATE_PROBES)
+ g_free (data.called_probes);
return GST_FLOW_CUSTOM_SUCCESS_1;
}
}
goto done;
pad->offset = offset;
- GST_DEBUG_OBJECT (pad, "changed offset to %" G_GINT64_FORMAT, offset);
+ GST_DEBUG_OBJECT (pad, "changed offset to %" GST_STIME_FORMAT,
+ GST_STIME_ARGS (offset));
/* resend all sticky events with updated offset on next buffer push */
events_foreach (pad, mark_event_not_received, NULL);
} else {
data->ret = gst_pad_push_event_unchecked (pad, gst_event_ref (event),
GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM);
+ if (data->ret == GST_FLOW_CUSTOM_SUCCESS_1)
+ data->ret = GST_FLOW_OK;
}
switch (data->ret) {
GST_DEBUG_OBJECT (pad, "sent query %p (%s), result %d", query,
GST_QUERY_TYPE_NAME (query), res);
- GST_TRACER_PAD_QUERY_POST (pad, res, query);
+ GST_TRACER_PAD_QUERY_POST (pad, query, res);
if (res != TRUE)
goto query_failed;
/* do post-blocking probes */
PROBE_HANDLE (pad, type, data, probe_stopped, probe_handled);
+ /* recheck sticky events because the probe might have cause a relink */
+ if (G_UNLIKELY ((ret = check_sticky (pad, NULL))) != GST_FLOW_OK)
+ goto events_error;
+
if (G_UNLIKELY ((peer = GST_PAD_PEER (pad)) == NULL))
goto not_linked;
/* Unset the EOS flag when received STREAM_START event, so pad can
* store sticky event and then push it later */
if (type == GST_EVENT_STREAM_START) {
- GST_LOG_OBJECT (pad, "Removing pending EOS events");
+ GST_LOG_OBJECT (pad, "Removing pending EOS and StreamGroupDone events");
remove_event_by_type (pad, GST_EVENT_EOS);
+ remove_event_by_type (pad, GST_EVENT_STREAM_GROUP_DONE);
GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_EOS);
}
/**
* gst_pad_store_sticky_event:
* @pad: a #GstPad
- * @event: a #GstEvent
+ * @event: (transfer none): a #GstEvent
*
* Store the sticky @event on @pad
*
GstFlowReturn ret;
GstPad *peerpad;
GstEventType event_type;
+ gint64 old_pad_offset = pad->offset;
/* pass the adjusted event on. We need to do this even if
* there is no peer pad because of the probes. */
/* Remove sticky EOS events */
GST_LOG_OBJECT (pad, "Removing pending EOS events");
remove_event_by_type (pad, GST_EVENT_EOS);
+ remove_event_by_type (pad, GST_EVENT_STREAM_GROUP_DONE);
remove_event_by_type (pad, GST_EVENT_SEGMENT);
GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_EOS);
pad->ABI.abi.last_flowret = GST_FLOW_OK;
}
PROBE_PUSH (pad, type | GST_PAD_PROBE_TYPE_PUSH |
GST_PAD_PROBE_TYPE_BLOCK, event, probe_stopped);
+ /* recheck sticky events because the probe might have cause a relink */
+ if (GST_PAD_HAS_PENDING_EVENTS (pad) && GST_PAD_IS_SRC (pad)
+ && (GST_EVENT_IS_SERIALIZED (event)
+ || GST_EVENT_IS_STICKY (event))) {
+ PushStickyData data = { GST_FLOW_OK, FALSE, event };
+ GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_PENDING_EVENTS);
+
+ /* Push all sticky events before our current one
+ * that have changed */
+ events_foreach (pad, sticky_changed, &data);
+ }
break;
}
}
events_foreach (pad, sticky_changed, &data);
}
+ /* the pad offset might've been changed by any of the probes above. It
+ * would've been taken into account when repushing any of the sticky events
+ * above but not for our current event here */
+ if (G_UNLIKELY (old_pad_offset != pad->offset)) {
+ event =
+ _apply_pad_offset (pad, event, GST_PAD_IS_SINK (pad),
+ pad->offset - old_pad_offset);
+ }
+
/* now check the peer pad */
peerpad = GST_PAD_PEER (pad);
if (peerpad == NULL)
GstEventType event_type;
gboolean serialized, need_unlock = FALSE, sticky;
GstPadEventFunction eventfunc;
+ GstPadEventFullFunction eventfullfunc = NULL;
GstObject *parent;
+ gint64 old_pad_offset;
GST_OBJECT_LOCK (pad);
+ old_pad_offset = pad->offset;
event = apply_pad_offset (pad, event, GST_PAD_IS_SRC (pad));
if (GST_PAD_IS_SINK (pad))
/* Remove pending EOS events */
GST_LOG_OBJECT (pad, "Removing pending EOS and SEGMENT events");
remove_event_by_type (pad, GST_EVENT_EOS);
+ remove_event_by_type (pad, GST_EVENT_STREAM_GROUP_DONE);
remove_event_by_type (pad, GST_EVENT_SEGMENT);
GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_EOS);
pad->ABI.abi.last_flowret = GST_FLOW_OK;
/* Remove sticky EOS events */
GST_LOG_OBJECT (pad, "Removing pending EOS events");
remove_event_by_type (pad, GST_EVENT_EOS);
+ remove_event_by_type (pad, GST_EVENT_STREAM_GROUP_DONE);
GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_EOS);
break;
default:
PROBE_PUSH (pad, type | GST_PAD_PROBE_TYPE_PUSH, event, probe_stopped);
- if (G_UNLIKELY ((eventfunc = GST_PAD_EVENTFUNC (pad)) == NULL))
+ /* the pad offset might've been changed by any of the probes above. It
+ * would've been taken into account when repushing any of the sticky events
+ * above but not for our current event here */
+ if (G_UNLIKELY (old_pad_offset != pad->offset)) {
+ event =
+ _apply_pad_offset (pad, event, GST_PAD_IS_SRC (pad),
+ pad->offset - old_pad_offset);
+ }
+
+ eventfullfunc = GST_PAD_EVENTFULLFUNC (pad);
+ eventfunc = GST_PAD_EVENTFUNC (pad);
+ if (G_UNLIKELY (eventfunc == NULL && eventfullfunc == NULL))
goto no_function;
ACQUIRE_PARENT (pad, parent, no_parent);
if (sticky)
gst_event_ref (event);
- if (eventfunc (pad, parent, event)) {
+ if (eventfullfunc) {
+ ret = eventfullfunc (pad, parent, event);
+ } else if (eventfunc (pad, parent, event)) {
ret = GST_FLOW_OK;
} else {
/* something went wrong */
* Gets the private data of a pad.
* No locking is performed in this function.
*
- * Returns: (transfer none): a #gpointer to the private data.
+ * Returns: (transfer none) (nullable): a #gpointer to the private data.
*/
gpointer
gst_pad_get_element_private (GstPad * pad)
if (task == NULL)
goto no_task;
res = gst_task_set_state (task, GST_TASK_PAUSED);
+ /* unblock activation waits if any */
+ pad->priv->in_activation = FALSE;
+ g_cond_broadcast (&pad->priv->activation_cond);
GST_OBJECT_UNLOCK (pad);
/* wait for task function to finish, this lock is recursive so it does nothing
}
/**
+ * gst_pad_get_task_state:
+ * @pad: the #GstPad to get task state from
+ *
+ * Get @pad task state. If no task is currently
+ * set, #GST_TASK_STOPPED is returned.
+ *
+ * Returns: The current state of @pad's task.
+ *
+ * Since: 1.12
+ */
+GstTaskState
+gst_pad_get_task_state (GstPad * pad)
+{
+ GstTask *task;
+ GstTaskState res;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), GST_TASK_STOPPED);
+
+ GST_OBJECT_LOCK (pad);
+ task = GST_PAD_TASK (pad);
+ if (task == NULL)
+ goto no_task;
+ res = gst_task_get_state (task);
+ GST_OBJECT_UNLOCK (pad);
+
+ return res;
+
+no_task:
+ {
+ GST_DEBUG_OBJECT (pad, "pad has no task");
+ GST_OBJECT_UNLOCK (pad);
+ return GST_TASK_STOPPED;
+ }
+}
+
+/**
* gst_pad_stop_task:
* @pad: the #GstPad to stop the task of
*
goto no_task;
GST_PAD_TASK (pad) = NULL;
res = gst_task_set_state (task, GST_TASK_STOPPED);
+ /* unblock activation waits if any */
+ pad->priv->in_activation = FALSE;
+ g_cond_broadcast (&pad->priv->activation_cond);
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_LOCK (pad);
* gst_pad_probe_info_get_event:
* @info: a #GstPadProbeInfo
*
- * Returns: (transfer none): The #GstEvent from the probe
+ * Returns: (transfer none) (nullable): The #GstEvent from the probe
*/
GstEvent *
* gst_pad_probe_info_get_query:
* @info: a #GstPadProbeInfo
*
- * Returns: (transfer none): The #GstQuery from the probe
+ * Returns: (transfer none) (nullable): The #GstQuery from the probe
*/
GstQuery *
* gst_pad_probe_info_get_buffer:
* @info: a #GstPadProbeInfo
*
- * Returns: (transfer none): The #GstBuffer from the probe
+ * Returns: (transfer none) (nullable): The #GstBuffer from the probe
*/
GstBuffer *
* gst_pad_probe_info_get_buffer_list:
* @info: a #GstPadProbeInfo
*
- * Returns: (transfer none): The #GstBufferlist from the probe
+ * Returns: (transfer none) (nullable): The #GstBufferList from the probe
*/
GstBufferList *
projects / platform / upstream / gstreamer.git / blobdiff