#include <glib.h>
+GST_API
const gchar * gst_pad_mode_get_name (GstPadMode mode);
#include <gst/gstobject.h>
GST_FLOW_CUSTOM_ERROR_2 = -102
} GstFlowReturn;
-const gchar* gst_flow_get_name (GstFlowReturn ret);
-GQuark gst_flow_to_quark (GstFlowReturn ret);
-const gchar* gst_pad_link_get_name (GstPadLinkReturn ret);
+GST_API
+const gchar * gst_flow_get_name (GstFlowReturn ret);
+
+GST_API
+GQuark gst_flow_to_quark (GstFlowReturn ret);
+
+GST_API
+const gchar * gst_pad_link_get_name (GstPadLinkReturn ret);
/**
* GstPadLinkCheck:
* would be unsafe e.g. if one pad has %GST_CAPS_ANY.
* @GST_PAD_LINK_CHECK_CAPS: Check if the pads are compatible by comparing the
* caps returned by gst_pad_query_caps().
+ * @GST_PAD_LINK_CHECK_NO_RECONFIGURE: Disables pushing a reconfigure event when pads are
+ * linked.
* @GST_PAD_LINK_CHECK_DEFAULT: The default checks done when linking
* pads (i.e. the ones used by gst_pad_link()).
*
* and @GST_PAD_LINK_CHECK_TEMPLATE_CAPS are mutually exclusive. If both are
* specified, expensive but safe @GST_PAD_LINK_CHECK_CAPS are performed.
*
- * <warning><para>
- * Only disable some of the checks if you are 100% certain you know the link
- * will not fail because of hierarchy/caps compatibility failures. If uncertain,
- * use the default checks (%GST_PAD_LINK_CHECK_DEFAULT) or the regular methods
- * for linking the pads.
- * </para></warning>
+ * > Only disable some of the checks if you are 100% certain you know the link
+ * > will not fail because of hierarchy/caps compatibility failures. If uncertain,
+ * > use the default checks (%GST_PAD_LINK_CHECK_DEFAULT) or the regular methods
+ * > for linking the pads.
*/
typedef enum {
GST_PAD_LINK_CHECK_TEMPLATE_CAPS = 1 << 1,
GST_PAD_LINK_CHECK_CAPS = 1 << 2,
+
+ /* Not really checks, more like flags
+ * Added here to avoid creating a new gst_pad_link_variant */
+ GST_PAD_LINK_CHECK_NO_RECONFIGURE = 1 << 3,
+
GST_PAD_LINK_CHECK_DEFAULT = GST_PAD_LINK_CHECK_HIERARCHY | GST_PAD_LINK_CHECK_CAPS
} GstPadLinkCheck;
typedef gboolean (*GstPadEventFunction) (GstPad *pad, GstObject *parent,
GstEvent *event);
+/**
+ * GstPadEventFullFunction:
+ * @pad: the #GstPad to handle the event.
+ * @parent: (allow-none): the parent of @pad. If the #GST_PAD_FLAG_NEED_PARENT
+ * flag is set, @parent is guaranteed to be not-%NULL and remain valid
+ * during the execution of this function.
+ * @event: (transfer full): the #GstEvent to handle.
+ *
+ * Function signature to handle an event for the pad.
+ *
+ * This variant is for specific elements that will take into account the
+ * last downstream flow return (from a pad push), in which case they can
+ * return it.
+ *
+ * Returns: %GST_FLOW_OK if the event was handled properly, or any other
+ * #GstFlowReturn dependent on downstream state.
+ *
+ * Since: 1.8
+ */
+typedef GstFlowReturn (*GstPadEventFullFunction) (GstPad *pad, GstObject *parent,
+ GstEvent *event);
+
/* internal links */
/**
* during the execution of this function.
*
* Function signature to handle a unlinking the pad prom its peer.
+ *
+ * The pad's lock is already held when the unlink function is called, so most
+ * pad functions cannot be called from within the callback.
*/
typedef void (*GstPadUnlinkFunction) (GstPad *pad, GstObject *parent);
/**
* GstPadProbeType:
* @GST_PAD_PROBE_TYPE_INVALID: invalid probe type
- * @GST_PAD_PROBE_TYPE_IDLE: probe idle pads and block
+ * @GST_PAD_PROBE_TYPE_IDLE: probe idle pads and block while the callback is called
* @GST_PAD_PROBE_TYPE_BLOCK: probe and block pads
* @GST_PAD_PROBE_TYPE_BUFFER: probe buffers
* @GST_PAD_PROBE_TYPE_BUFFER_LIST: probe buffer lists
* @GST_PAD_PROBE_OK: normal probe return value. This leaves the probe in
* place, and defers decisions about dropping or passing data to other
* probes, if any. If there are no other probes, the default behaviour
- * for the probe type applies (block for blocking probes, and pass for
- * non-blocking probes).
+ * for the probe type applies ('block' for blocking probes,
+ * and 'pass' for non-blocking probes).
* @GST_PAD_PROBE_DROP: drop data in data probes. For push mode this means that
* the data item is not sent downstream. For pull mode, it means that
- * the data item is not passed upstream. In both cases, no more probes
- * are called and #GST_FLOW_OK or %TRUE is returned to the caller.
+ * the data item is not passed upstream. In both cases, no other probes
+ * are called for this item and %GST_FLOW_OK or %TRUE is returned to the
+ * caller.
* @GST_PAD_PROBE_REMOVE: remove this probe.
* @GST_PAD_PROBE_PASS: pass the data item in the block probe and block on the
* next item.
* @GST_PAD_PROBE_HANDLED: Data has been handled in the probe and will not be
* forwarded further. For events and buffers this is the same behaviour as
- * @GST_PAD_PROBE_DROP (except that in this case you need to unref the buffer
+ * %GST_PAD_PROBE_DROP (except that in this case you need to unref the buffer
* or event yourself). For queries it will also return %TRUE to the caller.
* The probe can also modify the #GstFlowReturn value by using the
* #GST_PAD_PROBE_INFO_FLOW_RETURN() accessor.
#define GST_PAD_PROBE_INFO_OFFSET(d) ((d)->offset)
#define GST_PAD_PROBE_INFO_SIZE(d) ((d)->size)
+GST_API
GstEvent* gst_pad_probe_info_get_event (GstPadProbeInfo * info);
+
+GST_API
GstQuery* gst_pad_probe_info_get_query (GstPadProbeInfo * info);
+
+GST_API
GstBuffer* gst_pad_probe_info_get_buffer (GstPadProbeInfo * info);
+
+GST_API
GstBufferList* gst_pad_probe_info_get_buffer_list (GstPadProbeInfo * info);
/**
* @GST_PAD_FLAG_ACCEPT_TEMPLATE: the default accept-caps handler will use
* the template pad caps instead of query caps to
* compare with the accept caps. Use this in combination
- * with %GST_PAD_FLAG_ACCEPT_INTERSECT. (Since 1.6)
+ * with %GST_PAD_FLAG_ACCEPT_INTERSECT. (Since: 1.6)
* @GST_PAD_FLAG_LAST: offset to define more flags
*
* Pad state flags
gpointer _gst_reserved[GST_PADDING];
struct {
GstFlowReturn last_flowret;
+ GstPadEventFullFunction eventfullfunc;
} abi;
} ABI;
};
*/
#define GST_PAD_EVENTFUNC(pad) (GST_PAD_CAST(pad)->eventfunc)
/**
+ * GST_PAD_EVENTFULLFUNC:
+ * @pad: a #GstPad
+ *
+ * Get the #GstPadEventFullFunction from the given @pad, which
+ * is the function that handles events on the pad. You can
+ * use this to set your own event handling function on a pad
+ * after you create it. If your element derives from a base
+ * class, use the base class's virtual functions instead.
+ *
+ * Since: 1.8
+ */
+#define GST_PAD_EVENTFULLFUNC(pad) (GST_PAD_CAST(pad)->ABI.abi.eventfullfunc)
+/**
* GST_PAD_QUERYFUNC:
* @pad: a #GstPad
*
#define GST_PAD_BLOCK_SIGNAL(pad) (g_cond_signal(GST_PAD_BLOCK_GET_COND (pad)))
#define GST_PAD_BLOCK_BROADCAST(pad) (g_cond_broadcast(GST_PAD_BLOCK_GET_COND (pad)))
+GST_API
GType gst_pad_get_type (void);
/* creating pads */
+
+GST_API
GstPad* gst_pad_new (const gchar *name, GstPadDirection direction);
+
+GST_API
GstPad* gst_pad_new_from_template (GstPadTemplate *templ, const gchar *name);
+
+GST_API
GstPad* gst_pad_new_from_static_template (GstStaticPadTemplate *templ, const gchar *name);
*/
#define gst_pad_get_parent(pad) gst_object_get_parent (GST_OBJECT_CAST (pad))
+GST_API
GstPadDirection gst_pad_get_direction (GstPad *pad);
+GST_API
gboolean gst_pad_set_active (GstPad *pad, gboolean active);
+
+GST_API
gboolean gst_pad_is_active (GstPad *pad);
+
+GST_API
gboolean gst_pad_activate_mode (GstPad *pad, GstPadMode mode,
gboolean active);
-
+GST_API
gulong gst_pad_add_probe (GstPad *pad,
GstPadProbeType mask,
GstPadProbeCallback callback,
gpointer user_data,
GDestroyNotify destroy_data);
+GST_API
void gst_pad_remove_probe (GstPad *pad, gulong id);
+GST_API
gboolean gst_pad_is_blocked (GstPad *pad);
+
+GST_API
gboolean gst_pad_is_blocking (GstPad *pad);
+GST_API
void gst_pad_mark_reconfigure (GstPad *pad);
+
+GST_API
gboolean gst_pad_needs_reconfigure (GstPad *pad);
+
+GST_API
gboolean gst_pad_check_reconfigure (GstPad *pad);
+GST_API
void gst_pad_set_element_private (GstPad *pad, gpointer priv);
+
+GST_API
gpointer gst_pad_get_element_private (GstPad *pad);
+GST_API
GstPadTemplate* gst_pad_get_pad_template (GstPad *pad);
+GST_API
GstFlowReturn gst_pad_store_sticky_event (GstPad *pad, GstEvent *event);
+
+GST_API
GstEvent* gst_pad_get_sticky_event (GstPad *pad, GstEventType event_type,
guint idx);
+
+GST_API
void gst_pad_sticky_events_foreach (GstPad *pad, GstPadStickyEventsForeachFunction foreach_func, gpointer user_data);
/* data passing setup functions */
+
+GST_API
void gst_pad_set_activate_function_full (GstPad *pad,
GstPadActivateFunction activate,
gpointer user_data,
GDestroyNotify notify);
+GST_API
void gst_pad_set_activatemode_function_full (GstPad *pad,
GstPadActivateModeFunction activatemode,
gpointer user_data,
GDestroyNotify notify);
/* data passing functions */
+
+GST_API
void gst_pad_set_chain_function_full (GstPad *pad,
GstPadChainFunction chain,
gpointer user_data,
GDestroyNotify notify);
+GST_API
void gst_pad_set_chain_list_function_full (GstPad *pad,
GstPadChainListFunction chainlist,
gpointer user_data,
GDestroyNotify notify);
+GST_API
void gst_pad_set_getrange_function_full (GstPad *pad,
GstPadGetRangeFunction get,
gpointer user_data,
GDestroyNotify notify);
+GST_API
void gst_pad_set_event_function_full (GstPad *pad,
GstPadEventFunction event,
gpointer user_data,
GDestroyNotify notify);
+GST_API
+void gst_pad_set_event_full_function_full (GstPad *pad,
+ GstPadEventFullFunction event,
+ gpointer user_data,
+ GDestroyNotify notify);
#define gst_pad_set_activate_function(p,f) gst_pad_set_activate_function_full((p),(f),NULL,NULL)
#define gst_pad_set_activatemode_function(p,f) gst_pad_set_activatemode_function_full((p),(f),NULL,NULL)
#define gst_pad_set_chain_list_function(p,f) gst_pad_set_chain_list_function_full((p),(f),NULL,NULL)
#define gst_pad_set_getrange_function(p,f) gst_pad_set_getrange_function_full((p),(f),NULL,NULL)
#define gst_pad_set_event_function(p,f) gst_pad_set_event_function_full((p),(f),NULL,NULL)
+#define gst_pad_set_event_full_function(p,f) gst_pad_set_event_full_function_full((p),(f),NULL,NULL)
/* pad links */
+
+GST_API
void gst_pad_set_link_function_full (GstPad *pad,
GstPadLinkFunction link,
gpointer user_data,
GDestroyNotify notify);
+GST_API
void gst_pad_set_unlink_function_full (GstPad *pad,
GstPadUnlinkFunction unlink,
gpointer user_data,
#define gst_pad_set_link_function(p,f) gst_pad_set_link_function_full((p),(f),NULL,NULL)
#define gst_pad_set_unlink_function(p,f) gst_pad_set_unlink_function_full((p),(f),NULL,NULL)
+GST_API
gboolean gst_pad_can_link (GstPad *srcpad, GstPad *sinkpad);
+
+GST_API
GstPadLinkReturn gst_pad_link (GstPad *srcpad, GstPad *sinkpad);
+
+GST_API
GstPadLinkReturn gst_pad_link_full (GstPad *srcpad, GstPad *sinkpad, GstPadLinkCheck flags);
+
+GST_API
gboolean gst_pad_unlink (GstPad *srcpad, GstPad *sinkpad);
+
+GST_API
gboolean gst_pad_is_linked (GstPad *pad);
+GST_API
GstPad* gst_pad_get_peer (GstPad *pad);
+GST_API
GstCaps* gst_pad_get_pad_template_caps (GstPad *pad);
/* capsnego function for linked/unlinked pads */
+
+GST_API
GstCaps * gst_pad_get_current_caps (GstPad * pad);
+
+GST_API
gboolean gst_pad_has_current_caps (GstPad * pad);
/* capsnego for linked pads */
+
+GST_API
GstCaps * gst_pad_get_allowed_caps (GstPad * pad);
/* pad offsets */
+
+GST_API
gint64 gst_pad_get_offset (GstPad *pad);
+
+GST_API
void gst_pad_set_offset (GstPad *pad, gint64 offset);
/* data passing functions to peer */
+
+GST_API
GstFlowReturn gst_pad_push (GstPad *pad, GstBuffer *buffer);
+
+GST_API
GstFlowReturn gst_pad_push_list (GstPad *pad, GstBufferList *list);
+
+GST_API
GstFlowReturn gst_pad_pull_range (GstPad *pad, guint64 offset, guint size,
GstBuffer **buffer);
+GST_API
gboolean gst_pad_push_event (GstPad *pad, GstEvent *event);
+
+GST_API
gboolean gst_pad_event_default (GstPad *pad, GstObject *parent,
GstEvent *event);
+GST_API
GstFlowReturn gst_pad_get_last_flow_return (GstPad *pad);
/* data passing functions on pad */
+
+GST_API
GstFlowReturn gst_pad_chain (GstPad *pad, GstBuffer *buffer);
+
+GST_API
GstFlowReturn gst_pad_chain_list (GstPad *pad, GstBufferList *list);
+
+GST_API
GstFlowReturn gst_pad_get_range (GstPad *pad, guint64 offset, guint size,
GstBuffer **buffer);
+GST_API
gboolean gst_pad_send_event (GstPad *pad, GstEvent *event);
/* pad tasks */
+
+GST_API
gboolean gst_pad_start_task (GstPad *pad, GstTaskFunction func,
gpointer user_data, GDestroyNotify notify);
+GST_API
gboolean gst_pad_pause_task (GstPad *pad);
+
+GST_API
gboolean gst_pad_stop_task (GstPad *pad);
+GST_API
+GstTaskState gst_pad_get_task_state (GstPad *pad);
+
/* internal links */
+
+GST_API
void gst_pad_set_iterate_internal_links_function_full (GstPad * pad,
GstPadIterIntLinkFunction iterintlink,
gpointer user_data,
GDestroyNotify notify);
+
+GST_API
GstIterator * gst_pad_iterate_internal_links (GstPad * pad);
+
+GST_API
GstIterator * gst_pad_iterate_internal_links_default (GstPad * pad, GstObject *parent);
#define gst_pad_set_iterate_internal_links_function(p,f) gst_pad_set_iterate_internal_links_function_full((p),(f),NULL,NULL)
/* generic query function */
+
+GST_API
gboolean gst_pad_query (GstPad *pad, GstQuery *query);
+
+GST_API
gboolean gst_pad_peer_query (GstPad *pad, GstQuery *query);
+
+GST_API
void gst_pad_set_query_function_full (GstPad *pad, GstPadQueryFunction query,
gpointer user_data,
GDestroyNotify notify);
+GST_API
gboolean gst_pad_query_default (GstPad *pad, GstObject *parent,
GstQuery *query);
#define gst_pad_set_query_function(p,f) gst_pad_set_query_function_full((p),(f),NULL,NULL)
/* misc helper functions */
+
+GST_API
gboolean gst_pad_forward (GstPad *pad, GstPadForwardFunction forward,
gpointer user_data);
+#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstPad, gst_object_unref)
+#endif
+
G_END_DECLS
#endif /* __GST_PAD_H__ */
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