* application requests.
*
* Pads without pad templates can be created with gst_pad_new(),
- * which takes a direction and a name as an argument. If the name is NULL,
+ * which takes a direction and a name as an argument. If the name is %NULL,
* then a guaranteed unique name will be assigned to it.
*
* A #GstElement creating a pad will typically use the various
*
* gst_pad_get_parent() will retrieve the #GstElement that owns the pad.
*
- * After two pads are retrieved from an element with gst_element_get_pad(),
+ * After two pads are retrieved from an element by gst_element_get_static_pad(),
* the pads can be linked with gst_pad_link(). (For quick links,
* you can also use gst_element_link(), which will make the obvious
* link for you if it's straightforward.). Pads can be unlinked again with
* Convenience functions exist to start, pause and stop the task on a pad with
* gst_pad_start_task(), gst_pad_pause_task() and gst_pad_stop_task()
* respectively.
- *
- * Last reviewed on 2012-03-29 (0.11.3)
*/
#include "gst_private.h"
PAD_PROP_CAPS,
PAD_PROP_DIRECTION,
PAD_PROP_TEMPLATE,
- /* FILL ME */
+ PAD_PROP_OFFSET
+ /* FILL ME */
};
#define GST_PAD_GET_PRIVATE(obj) \
/* 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
- * moved to the active event when the eventfunc returned TRUE. */
+ * moved to the active event when the eventfunc returned %TRUE. */
typedef struct
{
gboolean received;
{
guint events_cookie;
GArray *events;
+ guint last_cookie;
gint using;
guint probe_list_cookie;
return 0;
}
+/**
+ * gst_pad_link_get_name:
+ * @ret: a #GstPadLinkReturn to get the name of.
+ *
+ * Gets a string representing the given pad-link return.
+ *
+ * Returns: a static string with the name of the pad-link return.
+ *
+ * Since: 1.4
+ */
+const gchar *
+gst_pad_link_get_name (GstPadLinkReturn ret)
+{
+ switch (ret) {
+ case GST_PAD_LINK_OK:
+ return "ok";
+ case GST_PAD_LINK_WRONG_HIERARCHY:
+ return "wrong hierarchy";
+ case GST_PAD_LINK_WAS_LINKED:
+ return "was linked";
+ case GST_PAD_LINK_WRONG_DIRECTION:
+ return "wrong direction";
+ case GST_PAD_LINK_NOFORMAT:
+ return "no common format";
+ case GST_PAD_LINK_NOSCHED:
+ return "incompatible scheduling";
+ case GST_PAD_LINK_REFUSED:
+ return "refused";
+ }
+ g_return_val_if_reached ("unknown");
+}
+
#define _do_init \
{ \
gint i; \
"The GstPadTemplate of this pad", GST_TYPE_PAD_TEMPLATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ /**
+ * GstPad:offset:
+ *
+ * The offset that will be applied to the running time of the pad.
+ *
+ * Since: 1.6
+ */
+ g_object_class_install_property (gobject_class, PAD_PROP_OFFSET,
+ g_param_spec_int64 ("offset", "Offset",
+ "The running time offset of the pad", 0, G_MAXINT64, 0,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
gstobject_class->path_string_separator = ".";
/* Register common function pointer descriptions */
g_hook_list_init (&pad->probes, sizeof (GstProbe));
pad->priv->events = g_array_sized_new (FALSE, TRUE, sizeof (PadEvent), 16);
+ pad->priv->events_cookie = 0;
+ pad->priv->last_cookie = -1;
+ pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
}
/* called when setting the pad inactive. It removes all sticky events from
{
guint i, len;
GArray *events;
+ gboolean notify = FALSE;
events = pad->priv->events;
ev->event = NULL;
- if (event && GST_EVENT_TYPE (event) == GST_EVENT_CAPS) {
- GST_OBJECT_UNLOCK (pad);
-
- GST_DEBUG_OBJECT (pad, "notify caps");
- g_object_notify_by_pspec ((GObject *) pad, pspec_caps);
+ if (event && GST_EVENT_TYPE (event) == GST_EVENT_CAPS)
+ notify = TRUE;
- GST_OBJECT_LOCK (pad);
- }
gst_event_unref (event);
}
+
GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_PENDING_EVENTS);
g_array_set_size (events, 0);
pad->priv->events_cookie++;
+
+ if (notify) {
+ GST_OBJECT_UNLOCK (pad);
+
+ GST_DEBUG_OBJECT (pad, "notify caps");
+ g_object_notify_by_pspec ((GObject *) pad, pspec_caps);
+
+ GST_OBJECT_LOCK (pad);
+ }
}
/* should be called with object lock */
}
/* check all events on srcpad against those on sinkpad. All events that are not
- * on sinkpad are marked as received=FALSE and the PENDING_EVENTS is set on the
+ * on sinkpad are marked as received=%FALSE and the PENDING_EVENTS is set on the
* srcpad so that the events will be sent next time */
/* should be called with srcpad and sinkpad LOCKS */
static void
if (G_UNLIKELY (ev->event != ev_ret.event)) {
if (G_UNLIKELY (ev_ret.event == NULL)) {
/* function unreffed and set the event to NULL, remove it */
+ gst_event_unref (ev->event);
g_array_remove_index (events, i);
len--;
cookie = ++pad->priv->events_cookie;
/* should be called with LOCK */
static GstEvent *
-apply_pad_offset (GstPad * pad, GstEvent * event)
+_apply_pad_offset (GstPad * pad, GstEvent * event, gboolean upstream)
{
- /* check if we need to adjust the segment */
- if (pad->offset != 0) {
+ gint64 offset;
+
+ GST_DEBUG_OBJECT (pad, "apply pad offset %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (pad->offset));
+
+ if (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
GstSegment segment;
+ g_assert (!upstream);
+
/* copy segment values */
gst_event_copy_segment (event, &segment);
gst_event_unref (event);
- /* adjust and make a new event with the offset applied */
- segment.base += 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;
+ else
+ offset += pad->offset;
+ gst_event_set_running_time_offset (event, offset);
+
+ return event;
+}
+
+static inline GstEvent *
+apply_pad_offset (GstPad * pad, GstEvent * event, gboolean upstream)
+{
+ if (G_UNLIKELY (pad->offset != 0))
+ return _apply_pad_offset (pad, event, upstream);
return event;
}
+
/* should be called with the OBJECT_LOCK */
static GstCaps *
get_pad_caps (GstPad * pad)
gst_pad_set_pad_template (GST_PAD_CAST (object),
(GstPadTemplate *) g_value_get_object (value));
break;
+ case PAD_PROP_OFFSET:
+ gst_pad_set_offset (GST_PAD_CAST (object), g_value_get_int64 (value));
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
case PAD_PROP_TEMPLATE:
g_value_set_object (value, GST_PAD_PAD_TEMPLATE (object));
break;
+ case PAD_PROP_OFFSET:
+ g_value_set_int64 (value, gst_pad_get_offset (GST_PAD_CAST (object)));
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
/**
* gst_pad_new:
- * @name: the name of the new pad.
+ * @name: (allow-none): the name of the new pad.
* @direction: the #GstPadDirection of the pad.
*
* Creates a new pad with the given name in the given direction.
- * If name is NULL, a guaranteed unique name (across all pads)
+ * If name is %NULL, a guaranteed unique name (across all pads)
* will be assigned.
* This function makes a copy of the name so you can safely free the name.
*
- * Returns: (transfer floating): a new #GstPad, or NULL in case of an error.
+ * Returns: (transfer floating) (nullable): a new #GstPad, or %NULL in
+ * case of an error.
*
* MT safe.
*/
/**
* gst_pad_new_from_template:
* @templ: the pad template to use
- * @name: the name of the element
+ * @name: (allow-none): the name of the pad
*
* Creates a new pad with the given name from the given template.
- * If name is NULL, a guaranteed unique name (across all pads)
+ * If name is %NULL, a guaranteed unique name (across all pads)
* will be assigned.
* This function makes a copy of the name so you can safely free the name.
*
- * Returns: (transfer full): a new #GstPad, or NULL in case of an error.
+ * Returns: (transfer floating) (nullable): a new #GstPad, or %NULL in
+ * case of an error.
*/
GstPad *
gst_pad_new_from_template (GstPadTemplate * templ, const gchar * name)
/**
* gst_pad_new_from_static_template:
* @templ: the #GstStaticPadTemplate to use
- * @name: the name of the element
+ * @name: the name of the pad
*
* Creates a new pad with the given name from the given static template.
- * If name is NULL, a guaranteed unique name (across all pads)
+ * If name is %NULL, a guaranteed unique name (across all pads)
* will be assigned.
* This function makes a copy of the name so you can safely free the name.
*
- * Returns: (transfer full): a new #GstPad, or NULL in case of an error.
+ * Returns: (transfer floating) (nullable): a new #GstPad, or %NULL in
+ * case of an error.
*/
GstPad *
gst_pad_new_from_static_template (GstStaticPadTemplate * templ,
GST_OBJECT_LOCK (pad);
GST_DEBUG_OBJECT (pad, "setting PAD_MODE NONE, set flushing");
GST_PAD_SET_FLUSHING (pad);
+ pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
GST_PAD_MODE (pad) = new_mode;
/* unlock blocked pads so element can resume and stop */
GST_PAD_BLOCK_BROADCAST (pad);
GST_DEBUG_OBJECT (pad, "setting pad into %s mode, unset flushing",
gst_pad_mode_get_name (new_mode));
GST_PAD_UNSET_FLUSHING (pad);
+ pad->ABI.abi.last_flowret = GST_FLOW_OK;
GST_PAD_MODE (pad) = new_mode;
if (GST_PAD_IS_SINK (pad)) {
GstPad *peer;
* function to perform the actual activation.
*
* If not @active, calls gst_pad_activate_mode() with the pad's current mode
- * and a FALSE argument.
+ * and a %FALSE argument.
*
- * Returns: #TRUE if the operation was successful.
+ * Returns: %TRUE if the operation was successful.
*
* MT safe.
*/
if (old == GST_PAD_MODE_NONE) {
GST_DEBUG_OBJECT (pad, "activating pad from none");
ret = (GST_PAD_ACTIVATEFUNC (pad)) (pad, parent);
+ if (ret)
+ pad->ABI.abi.last_flowret = GST_FLOW_OK;
} else {
GST_DEBUG_OBJECT (pad, "pad was active in %s mode",
gst_pad_mode_get_name (old));
GST_DEBUG_OBJECT (pad, "deactivating pad from %s mode",
gst_pad_mode_get_name (old));
ret = gst_pad_activate_mode (pad, old, FALSE);
+ if (ret)
+ pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
}
}
*
* If you don't know what this is, you probably don't want to call it.
*
- * Returns: TRUE if the operation was successful.
+ * Returns: %TRUE if the operation was successful.
*
* MT safe.
*/
break;
}
+ /* 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)) {
*
* Query if a pad is active
*
- * Returns: TRUE if the pad is active.
+ * Returns: %TRUE if the pad is active.
*
* MT safe.
*/
return result;
}
+static void
+cleanup_hook (GstPad * pad, GHook * hook)
+{
+ GstPadProbeType type;
+
+ if (!G_HOOK_IS_VALID (hook))
+ return;
+
+ type = (hook->flags) >> G_HOOK_FLAG_USER_SHIFT;
+
+ if (type & GST_PAD_PROBE_TYPE_BLOCKING) {
+ /* unblock when we remove the last blocking probe */
+ pad->num_blocked--;
+ GST_DEBUG_OBJECT (pad, "remove blocking probe, now %d left",
+ pad->num_blocked);
+
+ /* Might have new probes now that want to be called */
+ GST_PAD_BLOCK_BROADCAST (pad);
+
+ if (pad->num_blocked == 0) {
+ GST_DEBUG_OBJECT (pad, "last blocking probe removed, unblocking");
+ GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_BLOCKED);
+ }
+ }
+ g_hook_destroy_link (&pad->probes, hook);
+ pad->num_probes--;
+}
+
/**
* gst_pad_add_probe:
* @pad: the #GstPad to add the probe to
* Be notified of different states of pads. The provided callback is called for
* every state that matches @mask.
*
- * Returns: an id or 0 on error. The id can be used to remove the probe with
- * gst_pad_remove_probe().
+ * Returns: an id or 0 if no probe is pending. The id can be used to remove the
+ * probe with gst_pad_remove_probe(). When using GST_PAD_PROBE_TYPE_IDLE it can
+ * happen that the probe can be run immediately and if the probe returns
+ * GST_PAD_PROBE_REMOVE this functions returns 0.
*
* MT safe.
*/
GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_BLOCKED);
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad, "added blocking probe, "
"now %d blocking probes", pad->num_blocked);
+
+ /* Might have new probes now that want to be called */
+ GST_PAD_BLOCK_BROADCAST (pad);
}
/* call the callback if we need to be called for idle callbacks */
GST_OBJECT_UNLOCK (pad);
} else {
GstPadProbeInfo info = { GST_PAD_PROBE_TYPE_IDLE, res, };
+ GstPadProbeReturn ret;
+
+ /* Keep another ref, the callback could destroy the pad */
+ gst_object_ref (pad);
/* the pad is idle now, we can signal the idle callback now */
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"pad is idle, trigger idle callback");
GST_OBJECT_UNLOCK (pad);
- callback (pad, &info, user_data);
+ ret = callback (pad, &info, user_data);
+
+ GST_OBJECT_LOCK (pad);
+ switch (ret) {
+ case GST_PAD_PROBE_REMOVE:
+ /* remove the probe */
+ GST_DEBUG_OBJECT (pad, "asked to remove hook");
+ cleanup_hook (pad, hook);
+ res = 0;
+ break;
+ case GST_PAD_PROBE_DROP:
+ GST_DEBUG_OBJECT (pad, "asked to drop item");
+ break;
+ case GST_PAD_PROBE_PASS:
+ GST_DEBUG_OBJECT (pad, "asked to pass item");
+ break;
+ case GST_PAD_PROBE_OK:
+ GST_DEBUG_OBJECT (pad, "probe returned OK");
+ break;
+ default:
+ GST_DEBUG_OBJECT (pad, "probe returned %d", ret);
+ break;
+ }
+ GST_OBJECT_UNLOCK (pad);
+
+ gst_object_unref (pad);
}
} else {
GST_OBJECT_UNLOCK (pad);
return res;
}
-static void
-cleanup_hook (GstPad * pad, GHook * hook)
-{
- GstPadProbeType type;
-
- if (!G_HOOK_IS_VALID (hook))
- return;
-
- type = (hook->flags) >> G_HOOK_FLAG_USER_SHIFT;
-
- if (type & GST_PAD_PROBE_TYPE_BLOCKING) {
- /* unblock when we remove the last blocking probe */
- pad->num_blocked--;
- GST_DEBUG_OBJECT (pad, "remove blocking probe, now %d left",
- pad->num_blocked);
- if (pad->num_blocked == 0) {
- GST_DEBUG_OBJECT (pad, "last blocking probe removed, unblocking");
- GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_BLOCKED);
- GST_PAD_BLOCK_BROADCAST (pad);
- }
- }
- g_hook_destroy_link (&pad->probes, hook);
- pad->num_probes--;
-}
-
/**
* gst_pad_remove_probe:
* @pad: the #GstPad with the probe
* last requested state of the pad. It is not certain that the pad
* is actually blocking at this point (see gst_pad_is_blocking()).
*
- * Returns: TRUE if the pad is blocked.
+ * Returns: %TRUE if the pad is blocked.
*
* MT safe.
*/
* Checks if the pad is blocking or not. This is a guaranteed state
* of whether the pad is actually blocking on a #GstBuffer or a #GstEvent.
*
- * Returns: TRUE if the pad is blocking.
+ * Returns: %TRUE if the pad is blocking.
*
* MT safe.
*/
* @p: a #GstPad.
* @f: the #GstPadActivateFunction to set.
*
- * Calls gst_pad_set_activate_function_full() with NULL for the user_data and
+ * Calls gst_pad_set_activate_function_full() with %NULL for the user_data and
* notify.
*/
/**
* @p: a #GstPad.
* @f: the #GstPadActivateModeFunction to set.
*
- * Calls gst_pad_set_activatemode_function_full() with NULL for the user_data and
+ * Calls gst_pad_set_activatemode_function_full() with %NULL for the user_data and
* notify.
*/
/**
* @p: a sink #GstPad.
* @f: the #GstPadChainFunction to set.
*
- * Calls gst_pad_set_chain_function_full() with NULL for the user_data and
+ * Calls gst_pad_set_chain_function_full() with %NULL for the user_data and
* notify.
*/
/**
* @p: a sink #GstPad.
* @f: the #GstPadChainListFunction to set.
*
- * Calls gst_pad_set_chain_list_function_full() with NULL for the user_data and
+ * Calls gst_pad_set_chain_list_function_full() with %NULL for the user_data and
* notify.
*/
/**
* @p: a source #GstPad.
* @f: the #GstPadGetRangeFunction to set.
*
- * Calls gst_pad_set_getrange_function_full() with NULL for the user_data and
+ * Calls gst_pad_set_getrange_function_full() with %NULL for the user_data and
* notify.
*/
/**
* @p: a #GstPad of either direction.
* @f: the #GstPadEventFunction to set.
*
- * Calls gst_pad_set_event_function_full() with NULL for the user_data and
+ * Calls gst_pad_set_event_function_full() with %NULL for the user_data and
* notify.
*/
/**
* @p: a #GstPad of either direction.
* @f: the #GstPadQueryFunction to set.
*
- * Calls gst_pad_set_query_function_full() with NULL for the user_data and
+ * Calls gst_pad_set_query_function_full() with %NULL for the user_data and
* notify.
*/
/**
* @p: a #GstPad of either direction.
* @f: the #GstPadIterIntLinkFunction to set.
*
- * Calls gst_pad_set_iterate_internal_links_function_full() with NULL
+ * Calls gst_pad_set_iterate_internal_links_function_full() with %NULL
* for the user_data and notify.
*/
/**
* @p: a #GstPad.
* @f: the #GstPadLinkFunction to set.
*
- * Calls gst_pad_set_link_function_full() with NULL
+ * Calls gst_pad_set_link_function_full() with %NULL
* for the user_data and notify.
*/
/**
* @p: a #GstPad.
* @f: the #GstPadUnlinkFunction to set.
*
- * Calls gst_pad_set_unlink_function_full() with NULL
+ * Calls gst_pad_set_unlink_function_full() with %NULL
* for the user_data and notify.
*/
/**
* Unlinks the source pad from the sink pad. Will emit the #GstPad::unlinked
* signal on both pads.
*
- * Returns: TRUE if the pads were unlinked. This function returns FALSE if
+ * Returns: %TRUE if the pads were unlinked. This function returns %FALSE if
* the pads were not linked together.
*
* MT safe.
*
* Checks if a @pad is linked to another pad or not.
*
- * Returns: TRUE if the pad is linked, FALSE otherwise.
+ * Returns: %TRUE if the pad is linked, %FALSE otherwise.
*
* MT safe.
*/
sinkcaps);
/* if we have caps on both pads we can check the intersection. If one
- * of the caps is NULL, we return TRUE. */
+ * of the caps is %NULL, we return %TRUE. */
if (G_UNLIKELY (srccaps == NULL || sinkcaps == NULL)) {
if (srccaps)
gst_caps_unref (srccaps);
done:
GST_CAT_DEBUG (GST_CAT_CAPS, "caps are %scompatible",
- (compatible ? "" : "not"));
+ (compatible ? "" : "not "));
return compatible;
}
* Checks if the source pad and the sink pad are compatible so they can be
* linked.
*
- * Returns: TRUE if the pads can be linked.
+ * Returns: %TRUE if the pads can be linked.
*/
gboolean
gst_pad_can_link (GstPad * srcpad, GstPad * sinkpad)
/* prepare will also lock the two pads */
result = gst_pad_link_prepare (srcpad, sinkpad, flags);
- if (G_UNLIKELY (result != GST_PAD_LINK_OK))
+ if (G_UNLIKELY (result != GST_PAD_LINK_OK)) {
+ GST_CAT_INFO (GST_CAT_PADS, "link between %s:%s and %s:%s failed: %s",
+ GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad),
+ gst_pad_link_get_name (result));
goto done;
+ }
/* must set peers before calling the link function */
GST_PAD_PEER (srcpad) = sinkpad;
}
link_failed:
{
- GST_CAT_INFO (GST_CAT_PADS, "link between %s:%s and %s:%s failed",
- GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad));
+ GST_CAT_INFO (GST_CAT_PADS, "link between %s:%s and %s:%s failed: %s",
+ GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad),
+ gst_pad_link_get_name (result));
GST_PAD_PEER (srcpad) = NULL;
GST_PAD_PEER (sinkpad) = NULL;
*
* Gets the template for @pad.
*
- * Returns: (transfer full): the #GstPadTemplate from which this pad was
- * instantiated, or %NULL if this pad has no template. Unref after
- * usage.
+ * Returns: (transfer full) (nullable): the #GstPadTemplate from which
+ * this pad was instantiated, or %NULL if this pad has no
+ * template. Unref after usage.
*/
GstPadTemplate *
gst_pad_get_pad_template (GstPad * pad)
*
* Check if @pad has caps set on it with a #GST_EVENT_CAPS event.
*
- * Returns: TRUE when @pad has caps associated with it.
+ * Returns: %TRUE when @pad has caps associated with it.
*/
gboolean
gst_pad_has_current_caps (GstPad * pad)
* calling gst_pad_query_caps() on @pad and its peer. The caller owns a reference
* on the resulting caps.
*
- * Returns: (transfer full): the allowed #GstCaps of the pad link. Unref the
- * caps when you no longer need it. This function returns NULL when @pad
- * has no peer.
+ * Returns: (transfer full) (nullable): the allowed #GstCaps of the
+ * pad link. Unref the caps when you no longer need it. This
+ * function returns %NULL when @pad has no peer.
*
* MT safe.
*/
/**
* gst_pad_iterate_internal_links_default:
* @pad: the #GstPad to get the internal links of.
- * @parent: the parent of @pad or NULL
+ * @parent: (allow-none): the parent of @pad or %NULL
*
* Iterate the list of pads to which the given pad is linked to inside of
* the parent element.
*
* The caller must free this iterator after use with gst_iterator_free().
*
- * Returns: a #GstIterator of #GstPad, or NULL if @pad has no parent. Unref each
- * returned pad with gst_object_unref().
+ * Returns: (nullable): a #GstIterator of #GstPad, or %NULL if @pad
+ * has no parent. Unref each returned pad with gst_object_unref().
*/
GstIterator *
gst_pad_iterate_internal_links_default (GstPad * pad, GstObject * parent)
*
* Free-function: gst_iterator_free
*
- * Returns: (transfer full): a new #GstIterator of #GstPad or %NULL when the
- * pad does not have an iterator function configured. Use
- * gst_iterator_free() after usage.
+ * Returns: (transfer full) (nullable): a new #GstIterator of #GstPad
+ * or %NULL when the pad does not have an iterator function
+ * configured. Use gst_iterator_free() after usage.
*/
GstIterator *
gst_pad_iterate_internal_links (GstPad * pad)
{
GST_DEBUG_OBJECT (pad, "no parent");
GST_OBJECT_UNLOCK (pad);
- return FALSE;
+ return NULL;
}
}
* dynamically changing internal pads and will make sure that the @forward
* function is only called once for each pad.
*
- * When @forward returns TRUE, no further pads will be processed.
+ * When @forward returns %TRUE, no further pads will be processed.
*
- * Returns: TRUE if one of the dispatcher functions returned TRUE.
+ * Returns: %TRUE if one of the dispatcher functions returned %TRUE.
*/
gboolean
gst_pad_forward (GstPad * pad, GstPadForwardFunction forward,
/**
* gst_pad_event_default:
* @pad: a #GstPad to call the default event handler on.
- * @parent: the parent of @pad or NULL
+ * @parent: (allow-none): the parent of @pad or %NULL
* @event: (transfer full): the #GstEvent to handle.
*
* Invokes the default event handler for the given pad.
* The EOS event will pause the task associated with @pad before it is forwarded
* to all internally linked pads,
*
- * The the event is sent to all pads internally linked to @pad. This function
+ * The event is sent to all pads internally linked to @pad. This function
* takes ownership of @event.
*
- * Returns: TRUE if the event was sent successfully.
+ * Returns: %TRUE if the event was sent successfully.
*/
gboolean
gst_pad_event_default (GstPad * pad, GstObject * parent, GstEvent * event)
GST_CAT_DEBUG_OBJECT (GST_CAT_PERFORMANCE, pad,
"fallback ACCEPT_CAPS query, consider implementing a specialized version");
- allowed = gst_pad_query_caps (pad, NULL);
gst_query_parse_accept_caps (query, &caps);
+ allowed = gst_pad_query_caps (pad, caps);
if (allowed) {
- GST_DEBUG_OBJECT (pad, "allowed caps %" GST_PTR_FORMAT, allowed);
- result = gst_caps_is_subset (caps, allowed);
+ if (GST_PAD_IS_ACCEPT_INTERSECT (pad)) {
+ GST_DEBUG_OBJECT (pad,
+ "allowed caps intersect %" GST_PTR_FORMAT ", caps %" GST_PTR_FORMAT,
+ allowed, caps);
+ result = gst_caps_can_intersect (caps, allowed);
+ } else {
+ GST_DEBUG_OBJECT (pad, "allowed caps subset %" GST_PTR_FORMAT ", caps %"
+ GST_PTR_FORMAT, allowed, caps);
+ result = gst_caps_is_subset (caps, allowed);
+ }
gst_caps_unref (allowed);
} else {
- GST_DEBUG_OBJECT (pad, "no caps allowed on the pad");
+ GST_DEBUG_OBJECT (pad, "no compatible caps allowed on the pad");
result = FALSE;
}
gst_query_set_accept_caps_result (query, result);
return TRUE;
}
+/* Default latency implementation */
+typedef struct
+{
+ gboolean live;
+ GstClockTime min, max;
+} LatencyFoldData;
+
+static gboolean
+query_latency_default_fold (const GValue * item, GValue * ret,
+ gpointer user_data)
+{
+ GstPad *pad = g_value_get_object (item), *peer;
+ LatencyFoldData *fold_data = user_data;
+ GstQuery *query;
+ gboolean res = FALSE;
+
+ query = gst_query_new_latency ();
+
+ peer = gst_pad_get_peer (pad);
+ if (peer) {
+ res = gst_pad_peer_query (pad, query);
+ } else {
+ GST_LOG_OBJECT (pad, "No peer pad found, ignoring this pad");
+ }
+
+ if (res) {
+ gboolean live;
+ GstClockTime min, max;
+
+ gst_query_parse_latency (query, &live, &min, &max);
+
+ GST_LOG_OBJECT (pad, "got latency live:%s min:%" G_GINT64_FORMAT
+ " max:%" G_GINT64_FORMAT, live ? "true" : "false", min, max);
+
+ if (live) {
+ if (min > fold_data->min)
+ fold_data->min = min;
+
+ if (fold_data->max == GST_CLOCK_TIME_NONE)
+ fold_data->max = max;
+ else if (max < fold_data->max)
+ fold_data->max = max;
+
+ fold_data->live = TRUE;
+ }
+ } else if (peer) {
+ GST_DEBUG_OBJECT (pad, "latency query failed");
+ g_value_set_boolean (ret, FALSE);
+ }
+
+ gst_query_unref (query);
+ if (peer)
+ gst_object_unref (peer);
+
+ return TRUE;
+}
+
+static gboolean
+gst_pad_query_latency_default (GstPad * pad, GstQuery * query)
+{
+ GstIterator *it;
+ GstIteratorResult res;
+ GValue ret = G_VALUE_INIT;
+ gboolean query_ret;
+ LatencyFoldData fold_data;
+
+ it = gst_pad_iterate_internal_links (pad);
+ if (!it) {
+ GST_DEBUG_OBJECT (pad, "Can't iterate internal links");
+ return FALSE;
+ }
+
+ g_value_init (&ret, G_TYPE_BOOLEAN);
+
+retry:
+ fold_data.live = FALSE;
+ fold_data.min = 0;
+ fold_data.max = GST_CLOCK_TIME_NONE;
+
+ g_value_set_boolean (&ret, TRUE);
+ res = gst_iterator_fold (it, query_latency_default_fold, &ret, &fold_data);
+ switch (res) {
+ case GST_ITERATOR_OK:
+ g_assert_not_reached ();
+ break;
+ case GST_ITERATOR_DONE:
+ break;
+ case GST_ITERATOR_ERROR:
+ g_value_set_boolean (&ret, FALSE);
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (it);
+ goto retry;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ gst_iterator_free (it);
+
+ query_ret = g_value_get_boolean (&ret);
+ if (query_ret) {
+ GST_LOG_OBJECT (pad, "got latency live:%s min:%" G_GINT64_FORMAT
+ " max:%" G_GINT64_FORMAT, fold_data.live ? "true" : "false",
+ fold_data.min, fold_data.max);
+
+ if (fold_data.min > fold_data.max) {
+ GST_ERROR_OBJECT (pad, "minimum latency bigger than maximum latency");
+ }
+
+ gst_query_set_latency (query, fold_data.live, fold_data.min, fold_data.max);
+ } else {
+ GST_LOG_OBJECT (pad, "latency query failed");
+ }
+
+ return query_ret;
+}
+
typedef struct
{
GstQuery *query;
/**
* gst_pad_query_default:
* @pad: a #GstPad to call the default query handler on.
- * @parent: the parent of @pad or NULL
+ * @parent: (allow-none): the parent of @pad or %NULL
* @query: (transfer none): the #GstQuery to handle.
*
* Invokes the default query handler for the given pad.
* @pad, only one will be sent the query.
* Multi-sinkpad elements should implement custom query handlers.
*
- * Returns: TRUE if the query was performed successfully.
+ * Returns: %TRUE if the query was performed successfully.
*/
gboolean
gst_pad_query_default (GstPad * pad, GstObject * parent, GstQuery * query)
ret = gst_pad_query_caps_default (pad, query);
forward = FALSE;
break;
+ case GST_QUERY_LATENCY:
+ ret = gst_pad_query_latency_default (pad, query);
+ forward = FALSE;
+ break;
case GST_QUERY_POSITION:
case GST_QUERY_SEEKING:
case GST_QUERY_FORMATS:
- case GST_QUERY_LATENCY:
case GST_QUERY_JITTER:
case GST_QUERY_RATE:
case GST_QUERY_CONVERT:
GstPadProbeType type, flags;
GstPadProbeCallback callback;
GstPadProbeReturn ret;
+ gpointer original_data;
/* if we have called this callback, do nothing */
if (PROBE_COOKIE (hook) == data->cookie) {
flags = hook->flags >> G_HOOK_FLAG_USER_SHIFT;
type = info->type;
+ original_data = info->data;
- /* one of the data types */
- if ((flags & GST_PAD_PROBE_TYPE_ALL_BOTH & type) == 0)
+ /* 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)
if ((type & GST_PAD_PROBE_TYPE_BLOCKING) &&
(flags & GST_PAD_PROBE_TYPE_BLOCKING & type) == 0)
goto no_match;
+ if ((type & GST_PAD_PROBE_TYPE_BLOCKING) == 0 &&
+ (flags & GST_PAD_PROBE_TYPE_BLOCKING))
+ goto no_match;
/* only probes that have GST_PAD_PROBE_TYPE_EVENT_FLUSH set */
if ((type & GST_PAD_PROBE_TYPE_EVENT_FLUSH) &&
(flags & GST_PAD_PROBE_TYPE_EVENT_FLUSH & type) == 0)
GST_OBJECT_LOCK (pad);
+ if (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;
+ }
+
switch (ret) {
case GST_PAD_PROBE_REMOVE:
/* remove the probe */
#define PROBE_NO_DATA(pad,mask,label,defaultval) \
G_STMT_START { \
if (G_UNLIKELY (pad->num_probes)) { \
+ GstFlowReturn pval = defaultval; \
/* pass NULL as the data item */ \
GstPadProbeInfo info = { mask, 0, NULL, 0, 0 }; \
ret = do_probe_callbacks (pad, &info, defaultval); \
- if (G_UNLIKELY (ret != defaultval && ret != GST_FLOW_OK)) \
+ if (G_UNLIKELY (ret != pval && ret != GST_FLOW_OK)) \
goto label; \
} \
} G_STMT_END
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 (cookie != pad->priv->probe_list_cookie) {
+ GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
+ "probe list changed, restarting");
+ goto again;
+ }
+
if (G_UNLIKELY (GST_PAD_IS_FLUSHING (pad)))
goto flushing;
}
return result;
}
+static gboolean
+mark_event_not_received (GstPad * pad, PadEvent * ev, gpointer user_data)
+{
+ ev->received = FALSE;
+ return TRUE;
+}
+
/**
* gst_pad_set_offset:
* @pad: a #GstPad
void
gst_pad_set_offset (GstPad * pad, gint64 offset)
{
- PadEvent *ev;
-
g_return_if_fail (GST_IS_PAD (pad));
GST_OBJECT_LOCK (pad);
pad->offset = offset;
GST_DEBUG_OBJECT (pad, "changed offset to %" G_GINT64_FORMAT, offset);
- /* sinkpads will apply their offset the next time a segment
- * event is received. */
- if (GST_PAD_IS_SINK (pad))
- goto done;
-
- /* resend the last segment event on next buffer push */
- if ((ev = find_event_by_type (pad, GST_EVENT_SEGMENT, 0))) {
- ev->received = FALSE;
- GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_PENDING_EVENTS);
- }
+ /* resend all sticky events with updated offset on next buffer push */
+ events_foreach (pad, mark_event_not_received, NULL);
+ GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_PENDING_EVENTS);
done:
GST_OBJECT_UNLOCK (pad);
*
* Please also note that some queries might need a running pipeline to work.
*
- * Returns: TRUE if the query could be performed.
+ * Returns: %TRUE if the query could be performed.
*/
gboolean
gst_pad_query (GstPad * pad, GstQuery * query)
GST_PAD_STREAM_UNLOCK (pad);
/* if a probe dropped, we don't sent it further but assume that the probe
- * answered the query and return TRUE */
- if (ret == GST_FLOW_CUSTOM_SUCCESS)
- res = TRUE;
- else
- res = FALSE;
+ * did not answer the query and return FALSE */
+ res = FALSE;
return res;
}
* The caller is responsible for both the allocation and deallocation of
* the query structure.
*
- * Returns: TRUE if the query could be performed. This function returns %FALSE
+ * Returns: %TRUE if the query could be performed. This function returns %FALSE
* if @pad has no peer.
*/
gboolean
if (GST_PAD_IS_SRC (pad) && serialized) {
/* all serialized queries on the srcpad trigger push of
* sticky events */
- if (!check_sticky (pad, NULL) == GST_FLOW_OK)
+ if (check_sticky (pad, NULL) != GST_FLOW_OK)
goto sticky_failed;
}
GST_OBJECT_UNLOCK (pad);
/* if a probe dropped, we don't sent it further but assume that the probe
- * answered the query and return TRUE */
- if (ret == GST_FLOW_CUSTOM_SUCCESS)
- res = TRUE;
- else
- res = FALSE;
+ * did not answer the query and return FALSE */
+ res = FALSE;
return res;
}
goto wrong_mode;
#ifndef G_DISABLE_ASSERT
- if (!find_event_by_type (pad, GST_EVENT_STREAM_START, 0)) {
- g_warning (G_STRLOC
- ":%s:<%s:%s> Got data flow before stream-start event",
- G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
- }
- if (!find_event_by_type (pad, GST_EVENT_SEGMENT, 0)) {
- g_warning (G_STRLOC
- ":%s:<%s:%s> Got data flow before segment event",
- G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
+ if (G_UNLIKELY (pad->priv->last_cookie != pad->priv->events_cookie)) {
+ if (!find_event_by_type (pad, GST_EVENT_STREAM_START, 0)) {
+ g_warning (G_STRLOC
+ ":%s:<%s:%s> Got data flow before stream-start event",
+ G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
+ }
+ if (!find_event_by_type (pad, GST_EVENT_SEGMENT, 0)) {
+ g_warning (G_STRLOC
+ ":%s:<%s:%s> Got data flow before segment event",
+ G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
+ }
+ pad->priv->last_cookie = pad->priv->events_cookie;
}
#endif
ret = GST_FLOW_OK;
break;
default:
- GST_DEBUG_OBJECT (pad, "an error occured %s", gst_flow_get_name (ret));
+ GST_DEBUG_OBJECT (pad, "an error occurred %s", gst_flow_get_name (ret));
break;
}
return ret;
* The function returns #GST_FLOW_FLUSHING if the pad was flushing.
*
* If the buffer type is not acceptable for @pad (as negotiated with a
- * preceeding GST_EVENT_CAPS event), this function returns
+ * preceding GST_EVENT_CAPS event), this function returns
* #GST_FLOW_NOT_NEGOTIATED.
*
* The function proceeds calling the chain function installed on @pad (see
GstBuffer *buffer;
GstFlowReturn ret;
- GST_INFO_OBJECT (pad, "chaining each group in list as a merged buffer");
+ GST_INFO_OBJECT (pad, "chaining each buffer in list individually");
len = gst_buffer_list_length (list);
goto wrong_mode;
#ifndef G_DISABLE_ASSERT
- if (!find_event_by_type (pad, GST_EVENT_STREAM_START, 0)) {
- g_warning (G_STRLOC
- ":%s:<%s:%s> Got data flow before stream-start event",
- G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
- }
- if (!find_event_by_type (pad, GST_EVENT_SEGMENT, 0)) {
- g_warning (G_STRLOC
- ":%s:<%s:%s> Got data flow before segment event",
- G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
+ if (G_UNLIKELY (pad->priv->last_cookie != pad->priv->events_cookie)) {
+ if (!find_event_by_type (pad, GST_EVENT_STREAM_START, 0)) {
+ g_warning (G_STRLOC
+ ":%s:<%s:%s> Got data flow before stream-start event",
+ G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
+ }
+ if (!find_event_by_type (pad, GST_EVENT_SEGMENT, 0)) {
+ g_warning (G_STRLOC
+ ":%s:<%s:%s> Got data flow before segment event",
+ G_STRFUNC, GST_DEBUG_PAD_NAME (pad));
+ }
+ pad->priv->last_cookie = pad->priv->events_cookie;
}
#endif
gst_object_unref (peer);
GST_OBJECT_LOCK (pad);
+ pad->ABI.abi.last_flowret = ret;
pad->priv->using--;
if (pad->priv->using == 0) {
/* pad is not active anymore, trigger idle callbacks */
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"pushing, but pad was flushing");
+ pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
GST_OBJECT_UNLOCK (pad);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
return GST_FLOW_FLUSHING;
eos:
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad, "pushing, but pad was EOS");
+ pad->ABI.abi.last_flowret = GST_FLOW_EOS;
GST_OBJECT_UNLOCK (pad);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
return GST_FLOW_EOS;
{
g_critical ("pushing on pad %s:%s but it was not activated in push mode",
GST_DEBUG_PAD_NAME (pad));
+ pad->ABI.abi.last_flowret = GST_FLOW_ERROR;
GST_OBJECT_UNLOCK (pad);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
return GST_FLOW_ERROR;
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"error pushing events, return %s", gst_flow_get_name (ret));
+ pad->ABI.abi.last_flowret = ret;
GST_OBJECT_UNLOCK (pad);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
return ret;
probe_stopped:
{
GST_OBJECT_UNLOCK (pad);
- gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
+ pad->ABI.abi.last_flowret =
+ ret == GST_FLOW_CUSTOM_SUCCESS ? GST_FLOW_OK : ret;
+ if (data != NULL)
+ gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
switch (ret) {
case GST_FLOW_CUSTOM_SUCCESS:
ret = GST_FLOW_OK;
break;
default:
- GST_DEBUG_OBJECT (pad, "an error occured %s", gst_flow_get_name (ret));
+ GST_DEBUG_OBJECT (pad, "an error occurred %s", gst_flow_get_name (ret));
break;
}
return ret;
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"pushing, but it was not linked");
+ pad->ABI.abi.last_flowret = GST_FLOW_NOT_LINKED;
GST_OBJECT_UNLOCK (pad);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
return GST_FLOW_NOT_LINKED;
RELEASE_PARENT (parent);
+ GST_OBJECT_LOCK (pad);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto get_range_failed;
/* can only fire the signal if we have a valid buffer */
- GST_OBJECT_LOCK (pad);
probed_data:
PROBE_PULL (pad, GST_PAD_PROBE_TYPE_PULL | GST_PAD_PROBE_TYPE_BUFFER,
res_buf, offset, size, probe_stopped_unref);
+ pad->ABI.abi.last_flowret = ret;
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"getrange, but pad was flushing");
+ pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
return GST_FLOW_FLUSHING;
{
g_critical ("getrange on pad %s:%s but it was not activated in pull mode",
GST_DEBUG_PAD_NAME (pad));
+ pad->ABI.abi.last_flowret = GST_FLOW_ERROR;
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
return GST_FLOW_ERROR;
events_error:
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad, "error pushing events");
+ pad->ABI.abi.last_flowret = ret;
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
return ret;
no_parent:
{
GST_DEBUG_OBJECT (pad, "no parent");
+ pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
return GST_FLOW_FLUSHING;
ret = GST_FLOW_EOS;
}
}
+ pad->ABI.abi.last_flowret = ret;
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
/* if we drop here, it signals EOS */
if (ret == GST_FLOW_CUSTOM_SUCCESS)
ret = GST_FLOW_EOS;
+ pad->ABI.abi.last_flowret = ret;
GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
if (*buffer == NULL)
}
get_range_failed:
{
+ pad->ABI.abi.last_flowret = ret;
+ GST_OBJECT_UNLOCK (pad);
GST_PAD_STREAM_UNLOCK (pad);
GST_CAT_LEVEL_LOG (GST_CAT_SCHEDULING,
(ret >= GST_FLOW_EOS) ? GST_LEVEL_INFO : GST_LEVEL_WARNING,
* installed (see gst_pad_set_getrange_function()) this function returns
* #GST_FLOW_NOT_SUPPORTED.
*
- * If @buffer points to a variable holding NULL, a valid new #GstBuffer will be
+ * If @buffer points to a variable holding %NULL, a valid new #GstBuffer will be
* placed in @buffer when this function returns #GST_FLOW_OK. The new buffer
* must be freed with gst_buffer_unref() after usage.
*
* When this function returns any other result value than #GST_FLOW_OK, @buffer
* will be unchanged.
*
- * This is a lowlevel function. Usualy gst_pad_pull_range() is used.
+ * This is a lowlevel function. Usually gst_pad_pull_range() is used.
*
* Returns: a #GstFlowReturn from the pad.
*
g_return_val_if_fail (GST_IS_PAD (pad), GST_FLOW_ERROR);
g_return_val_if_fail (GST_PAD_IS_SRC (pad), GST_FLOW_ERROR);
g_return_val_if_fail (buffer != NULL, GST_FLOW_ERROR);
- g_return_val_if_fail (*buffer == NULL
- || GST_IS_BUFFER (*buffer), GST_FLOW_ERROR);
+ g_return_val_if_fail (*buffer == NULL || (GST_IS_BUFFER (*buffer)
+ && gst_buffer_get_size (*buffer) >= size), GST_FLOW_ERROR);
return gst_pad_get_range_unchecked (pad, offset, size, buffer);
}
* See gst_pad_get_range() for a list of return values and for the
* semantics of the arguments of this function.
*
- * If @buffer points to a variable holding NULL, a valid new #GstBuffer will be
+ * If @buffer points to a variable holding %NULL, a valid new #GstBuffer will be
* placed in @buffer when this function returns #GST_FLOW_OK. The new buffer
* must be freed with gst_buffer_unref() after usage. When this function
- * returns any other result value, @buffer will still point to NULL.
+ * returns any other result value, @buffer will still point to %NULL.
*
* When @buffer points to a variable that points to a valid #GstBuffer, the
* buffer will be filled with the result data when this function returns
g_return_val_if_fail (GST_IS_PAD (pad), GST_FLOW_ERROR);
g_return_val_if_fail (GST_PAD_IS_SINK (pad), GST_FLOW_ERROR);
g_return_val_if_fail (buffer != NULL, GST_FLOW_ERROR);
- g_return_val_if_fail (*buffer == NULL
- || GST_IS_BUFFER (*buffer), GST_FLOW_ERROR);
+ g_return_val_if_fail (*buffer == NULL || (GST_IS_BUFFER (*buffer)
+ && gst_buffer_get_size (*buffer) >= size), GST_FLOW_ERROR);
GST_OBJECT_LOCK (pad);
if (G_UNLIKELY (GST_PAD_IS_FLUSHING (pad)))
GST_OBJECT_LOCK (pad);
pad->priv->using--;
+ pad->ABI.abi.last_flowret = ret;
if (pad->priv->using == 0) {
/* pad is not active anymore, trigger idle callbacks */
PROBE_NO_DATA (pad, GST_PAD_PROBE_TYPE_PULL | GST_PAD_PROBE_TYPE_IDLE,
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"pullrange, but pad was flushing");
+ pad->ABI.abi.last_flowret = GST_FLOW_FLUSHING;
GST_OBJECT_UNLOCK (pad);
return GST_FLOW_FLUSHING;
}
{
g_critical ("pullrange on pad %s:%s but it was not activated in pull mode",
GST_DEBUG_PAD_NAME (pad));
+ pad->ABI.abi.last_flowret = GST_FLOW_ERROR;
GST_OBJECT_UNLOCK (pad);
return GST_FLOW_ERROR;
}
ret = GST_FLOW_EOS;
}
}
+ pad->ABI.abi.last_flowret = ret;
GST_OBJECT_UNLOCK (pad);
return ret;
}
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"pulling range, but it was not linked");
+ pad->ABI.abi.last_flowret = GST_FLOW_NOT_LINKED;
GST_OBJECT_UNLOCK (pad);
return GST_FLOW_NOT_LINKED;
}
pull_range_failed:
{
+ pad->ABI.abi.last_flowret = ret;
GST_OBJECT_UNLOCK (pad);
GST_CAT_LEVEL_LOG (GST_CAT_SCHEDULING,
(ret >= GST_FLOW_EOS) ? GST_LEVEL_INFO : GST_LEVEL_WARNING,
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"post probe returned %s", gst_flow_get_name (ret));
- GST_OBJECT_UNLOCK (pad);
+
/* if we drop here, it signals EOS */
if (ret == GST_FLOW_CUSTOM_SUCCESS)
ret = GST_FLOW_EOS;
+
+ pad->ABI.abi.last_flowret = ret;
+ GST_OBJECT_UNLOCK (pad);
+
if (*buffer == NULL)
gst_buffer_unref (res_buf);
return ret;
type = GST_EVENT_TYPE (event);
- /* Store all sticky events except SEGMENT/SEGMENT when we're flushing,
+ /* Store all sticky events except SEGMENT/EOS when we're flushing,
* otherwise they can be dropped and nothing would ever resend them.
* Only do that for activated pads though, everything else is a bug!
*/
break;
}
}
- if (type == GST_EVENT_EOS)
+ if (type == GST_EVENT_EOS) {
GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_EOS);
+ pad->ABI.abi.last_flowret = GST_FLOW_EOS;
+ }
return GST_PAD_IS_FLUSHING (pad) ? GST_FLOW_FLUSHING : GST_FLOW_OK;
GstPad *peerpad;
GstEventType event_type;
+ /* pass the adjusted event on. We need to do this even if
+ * there is no peer pad because of the probes. */
+ event = apply_pad_offset (pad, event, GST_PAD_IS_SINK (pad));
+
/* Two checks to be made:
* . (un)set the FLUSHING flag for flushing events,
* . handle pad blocking */
type |= GST_PAD_PROBE_TYPE_EVENT_FLUSH;
break;
case GST_EVENT_FLUSH_STOP:
+ if (G_UNLIKELY (!GST_PAD_IS_ACTIVE (pad)))
+ goto inactive;
+
GST_PAD_UNSET_FLUSHING (pad);
/* Remove sticky EOS events */
remove_event_by_type (pad, GST_EVENT_EOS);
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;
type |= GST_PAD_PROBE_TYPE_EVENT_FLUSH;
break;
*/
switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_SEGMENT:
- /* pass the adjusted segment event on. We need to do this even if
- * there is no peer pad because of the probes. */
- event = apply_pad_offset (pad, event);
- break;
case GST_EVENT_RECONFIGURE:
if (GST_PAD_IS_SINK (pad))
GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_NEED_RECONFIGURE);
GST_OBJECT_UNLOCK (pad);
GST_LOG_OBJECT (pad, "sending event %p (%s) to peerpad %" GST_PTR_FORMAT,
- event, GST_EVENT_TYPE_NAME (event), peerpad);
+ event, gst_event_type_get_name (event_type), peerpad);
ret = gst_pad_send_event_unchecked (peerpad, event, type);
/* Note: we gave away ownership of the event at this point but we can still
* print the old pointer */
- GST_LOG_OBJECT (pad, "sent event %p to peerpad %" GST_PTR_FORMAT ", ret %s",
- event, peerpad, gst_flow_get_name (ret));
+ GST_LOG_OBJECT (pad,
+ "sent event %p (%s) to peerpad %" GST_PTR_FORMAT ", ret %s", event,
+ gst_event_type_get_name (event_type), peerpad, gst_flow_get_name (ret));
gst_object_unref (peerpad);
gst_event_unref (event);
return GST_FLOW_FLUSHING;
}
+inactive:
+ {
+ GST_DEBUG_OBJECT (pad, "flush-stop on inactive pad");
+ gst_event_unref (event);
+ return GST_FLOW_FLUSHING;
+ }
probe_stopped:
{
GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_PENDING_EVENTS);
GST_DEBUG_OBJECT (pad, "dropped event");
break;
default:
- GST_DEBUG_OBJECT (pad, "an error occured %s", gst_flow_get_name (ret));
+ GST_DEBUG_OBJECT (pad, "an error occurred %s", gst_flow_get_name (ret));
break;
}
return ret;
}
not_linked:
{
- GST_DEBUG_OBJECT (pad, "Dropping event because pad is not linked");
+ GST_DEBUG_OBJECT (pad, "Dropping event %s because pad is not linked",
+ gst_event_type_get_name (GST_EVENT_TYPE (event)));
GST_OBJECT_FLAG_SET (pad, GST_PAD_FLAG_PENDING_EVENTS);
gst_event_unref (event);
* mainly used by elements to send events to their peer
* elements.
*
- * This function takes owership of the provided event so you should
+ * This function takes ownership of the provided event so you should
* gst_event_ref() it if you want to reuse the event after this call.
*
- * Returns: TRUE if the event was handled.
+ * Returns: %TRUE if the event was handled.
*
* MT safe.
*/
GstObject *parent;
GST_OBJECT_LOCK (pad);
+
+ event = apply_pad_offset (pad, event, GST_PAD_IS_SRC (pad));
+
if (GST_PAD_IS_SINK (pad))
serialized = GST_EVENT_IS_SERIALIZED (event);
else
"have event type %d (FLUSH_START)", GST_EVENT_TYPE (event));
/* can't even accept a flush begin event when flushing */
- if (GST_PAD_IS_FLUSHING (pad))
+ if (G_UNLIKELY (GST_PAD_IS_FLUSHING (pad)))
goto flushing;
GST_PAD_SET_FLUSHING (pad);
GST_CAT_DEBUG_OBJECT (GST_CAT_EVENT, pad, "set flush flag");
break;
case GST_EVENT_FLUSH_STOP:
- if (G_LIKELY (GST_PAD_MODE (pad) != GST_PAD_MODE_NONE)) {
- GST_PAD_UNSET_FLUSHING (pad);
- GST_CAT_DEBUG_OBJECT (GST_CAT_EVENT, pad, "cleared flush flag");
- }
+ /* we can't accept flush-stop on inactive pads else the flushing flag
+ * would be cleared and it would look like the pad can accept data.
+ * Also, some elements restart a streaming thread in flush-stop which we
+ * can't allow on inactive pads */
+ if (G_UNLIKELY (!GST_PAD_IS_ACTIVE (pad)))
+ goto inactive;
+
+ GST_PAD_UNSET_FLUSHING (pad);
+ GST_CAT_DEBUG_OBJECT (GST_CAT_EVENT, pad, "cleared flush flag");
/* 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_SEGMENT);
GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_EOS);
+ pad->ABI.abi.last_flowret = GST_FLOW_OK;
GST_OBJECT_UNLOCK (pad);
/* grab stream lock */
if (G_UNLIKELY (GST_PAD_IS_EOS (pad)))
goto eos;
}
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_SEGMENT:
- event = apply_pad_offset (pad, event);
- break;
- default:
- break;
- }
break;
}
gst_event_unref (event);
return GST_FLOW_FLUSHING;
}
+inactive:
+ {
+ GST_OBJECT_UNLOCK (pad);
+ if (need_unlock)
+ GST_PAD_STREAM_UNLOCK (pad);
+ GST_CAT_INFO_OBJECT (GST_CAT_EVENT, pad,
+ "Received flush-stop on inactive pad. Discarding");
+ gst_event_unref (event);
+ return GST_FLOW_FLUSHING;
+ }
eos:
{
GST_OBJECT_UNLOCK (pad);
ret = GST_FLOW_OK;
break;
default:
- GST_DEBUG_OBJECT (pad, "an error occured %s", gst_flow_get_name (ret));
+ GST_DEBUG_OBJECT (pad, "an error occurred %s", gst_flow_get_name (ret));
break;
}
return ret;
* plugin doesn't need to bother itself with this information; the core handles
* all necessary locks and checks.
*
- * This function takes owership of the provided event so you should
+ * This function takes ownership of the provided event so you should
* gst_event_ref() it if you want to reuse the event after this call.
*
- * Returns: TRUE if the event was handled.
+ * Returns: %TRUE if the event was handled.
*/
gboolean
gst_pad_send_event (GstPad * pad, GstEvent * event)
* Returns a new reference of the sticky event of type @event_type
* from the event.
*
- * Returns: (transfer full): a #GstEvent of type @event_type or NULL when no
- * event of @event_type was on @pad. Unref after usage.
+ * Returns: (transfer full) (nullable): a #GstEvent of type
+ * @event_type or %NULL when no event of @event_type was on
+ * @pad. Unref after usage.
*/
GstEvent *
gst_pad_get_sticky_event (GstPad * pad, GstEventType event_type, guint idx)
* function executed by the task is finished if this function is not
* called from the task function.
*
- * Returns: a TRUE if the task could be paused or FALSE when the pad
+ * Returns: a %TRUE if the task could be paused or %FALSE when the pad
* has no task.
*/
gboolean
* Regardless of whether the pad has a task, the stream lock is acquired and
* released so as to ensure that streaming through this pad has finished.
*
- * Returns: a TRUE if the task could be stopped or FALSE on error.
+ * Returns: a %TRUE if the task could be stopped or %FALSE on error.
*/
gboolean
gst_pad_stop_task (GstPad * pad)
return GST_PAD_PROBE_INFO_BUFFER_LIST (info);
}
+
+/**
+ * gst_pad_get_last_flow_return:
+ * @pad: the #GstPad
+ *
+ * Gets the #GstFlowReturn return from the last data passed by this pad.
+ *
+ * Since: 1.4
+ */
+GstFlowReturn
+gst_pad_get_last_flow_return (GstPad * pad)
+{
+ GstFlowReturn ret;
+
+ GST_OBJECT_LOCK (pad);
+ ret = GST_PAD_LAST_FLOW_RETURN (pad);
+ GST_OBJECT_UNLOCK (pad);
+
+ return ret;
+}
projects / platform / upstream / gstreamer.git / blobdiff