* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
- * gstpad.c: Pads for connecting elements together
+ * gstpad.c: Pads for linking elements together
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* Boston, MA 02111-1307, USA.
*/
-/* #define GST_DEBUG_ENABLED */
#include "gst_private.h"
#include "gstpad.h"
#include "gstbin.h"
#include "gstscheduler.h"
#include "gstevent.h"
+#include "gstinfo.h"
+
+enum {
+ TEMPL_PAD_CREATED,
+ /* FILL ME */
+ TEMPL_LAST_SIGNAL
+};
+
+static GstObject *padtemplate_parent_class = NULL;
+static guint gst_pad_template_signals[TEMPL_LAST_SIGNAL] = { 0 };
GType _gst_pad_type = 0;
/***** Start with the base GstPad class *****/
static void gst_pad_class_init (GstPadClass *klass);
static void gst_pad_init (GstPad *pad);
+static void gst_pad_dispose (GObject *object);
-static gboolean gst_pad_try_reconnect_filtered_func (GstRealPad *srcpad, GstRealPad *sinkpad,
+static gboolean gst_pad_try_relink_filtered_func (GstRealPad *srcpad, GstRealPad *sinkpad,
GstCaps *caps, gboolean clear);
+static void gst_pad_set_pad_template (GstPad *pad, GstPadTemplate *templ);
#ifndef GST_DISABLE_LOADSAVE
static xmlNodePtr gst_pad_save_thyself (GstObject *object, xmlNodePtr parent);
static GstObject *pad_parent_class = NULL;
GType
-gst_pad_get_type(void)
+gst_pad_get_type (void)
{
if (!_gst_pad_type) {
static const GTypeInfo pad_info = {
- sizeof(GstPadClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_pad_class_init,
- NULL,
- NULL,
- sizeof(GstPad),
+ sizeof (GstPadClass), NULL, NULL,
+ (GClassInitFunc) gst_pad_class_init, NULL, NULL,
+ sizeof (GstPad),
32,
- (GInstanceInitFunc)gst_pad_init,
- NULL
+ (GInstanceInitFunc) gst_pad_init, NULL
};
- _gst_pad_type = g_type_register_static(GST_TYPE_OBJECT, "GstPad", &pad_info, 0);
+ _gst_pad_type = g_type_register_static (GST_TYPE_OBJECT, "GstPad",
+ &pad_info, 0);
}
return _gst_pad_type;
}
static void
gst_pad_class_init (GstPadClass *klass)
{
- pad_parent_class = g_type_class_ref(GST_TYPE_OBJECT);
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass*) klass;
+
+ pad_parent_class = g_type_class_ref (GST_TYPE_OBJECT);
+
+ gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_pad_dispose);
}
static void
gst_pad_init (GstPad *pad)
{
- pad->element_private = NULL;
+ /* all structs are initialized to NULL by glib */
+}
+static void
+gst_pad_dispose (GObject *object)
+{
+ GstPad *pad = GST_PAD (object);
- pad->padtemplate = NULL;
+ gst_pad_set_pad_template (pad, NULL);
+
+ G_OBJECT_CLASS (pad_parent_class)->dispose (object);
}
/***** Then do the Real Pad *****/
/* Pad signals and args */
enum {
- REAL_SET_ACTIVE,
- REAL_CAPS_CHANGED,
REAL_CAPS_NEGO_FAILED,
- REAL_CONNECTED,
- REAL_DISCONNECTED,
- REAL_EVENT_RECEIVED,
+ REAL_LINKED,
+ REAL_UNLINKED,
/* FILL ME */
REAL_LAST_SIGNAL
};
enum {
REAL_ARG_0,
+ REAL_ARG_CAPS,
REAL_ARG_ACTIVE,
/* FILL ME */
};
static void gst_real_pad_class_init (GstRealPadClass *klass);
static void gst_real_pad_init (GstRealPad *pad);
-
-static void gst_real_pad_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
-static void gst_real_pad_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
-
static void gst_real_pad_dispose (GObject *object);
-static void gst_pad_push_func (GstPad *pad, GstBuffer *buf);
+static void gst_real_pad_set_property (GObject *object, guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gst_real_pad_get_property (GObject *object, guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
GType _gst_real_pad_type = 0;
static guint gst_real_pad_signals[REAL_LAST_SIGNAL] = { 0 };
GType
-gst_real_pad_get_type(void) {
+gst_real_pad_get_type (void) {
if (!_gst_real_pad_type) {
static const GTypeInfo pad_info = {
- sizeof(GstRealPadClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_real_pad_class_init,
- NULL,
- NULL,
- sizeof(GstRealPad),
+ sizeof (GstRealPadClass), NULL, NULL,
+ (GClassInitFunc) gst_real_pad_class_init, NULL, NULL,
+ sizeof (GstRealPad),
32,
- (GInstanceInitFunc)gst_real_pad_init,
- NULL
+ (GInstanceInitFunc) gst_real_pad_init, NULL
};
- _gst_real_pad_type = g_type_register_static(GST_TYPE_PAD, "GstRealPad", &pad_info, 0);
+ _gst_real_pad_type = g_type_register_static (GST_TYPE_PAD, "GstRealPad",
+ &pad_info, 0);
}
return _gst_real_pad_type;
}
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_real_pad_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_real_pad_get_property);
- gst_real_pad_signals[REAL_SET_ACTIVE] =
- g_signal_new ("set_active", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstRealPadClass, set_active), NULL, NULL,
- gst_marshal_VOID__BOOLEAN, G_TYPE_NONE, 1,
- G_TYPE_BOOLEAN);
- gst_real_pad_signals[REAL_CAPS_CHANGED] =
- g_signal_new ("caps_changed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstRealPadClass, caps_changed), NULL, NULL,
- gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
- G_TYPE_POINTER);
gst_real_pad_signals[REAL_CAPS_NEGO_FAILED] =
g_signal_new ("caps_nego_failed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstRealPadClass, caps_nego_failed), NULL, NULL,
- gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
- G_TYPE_POINTER);
- gst_real_pad_signals[REAL_CONNECTED] =
- g_signal_new ("connected", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstRealPadClass, connected), NULL, NULL,
- gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
- G_TYPE_POINTER);
- gst_real_pad_signals[REAL_DISCONNECTED] =
- g_signal_new ("disconnected", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstRealPadClass, disconnected), NULL, NULL,
- gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
- G_TYPE_POINTER);
- gst_real_pad_signals[REAL_EVENT_RECEIVED] =
- g_signal_new ("event_received", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstRealPadClass, event_received), NULL, NULL,
- gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
- G_TYPE_POINTER);
+ G_STRUCT_OFFSET (GstRealPadClass, caps_nego_failed), NULL, NULL,
+ gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
+ gst_real_pad_signals[REAL_LINKED] =
+ g_signal_new ("linked", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstRealPadClass, linked), NULL, NULL,
+ gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
+ gst_real_pad_signals[REAL_UNLINKED] =
+ g_signal_new ("unlinked", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstRealPadClass, unlinked), NULL, NULL,
+ gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
/* gtk_object_add_arg_type ("GstRealPad::active", G_TYPE_BOOLEAN, */
/* GTK_ARG_READWRITE, REAL_ARG_ACTIVE); */
g_object_class_install_property (G_OBJECT_CLASS (klass), REAL_ARG_ACTIVE,
g_param_spec_boolean ("active", "Active", "Whether the pad is active.",
- TRUE,G_PARAM_READWRITE));
+ TRUE, G_PARAM_READWRITE));
+ g_object_class_install_property (G_OBJECT_CLASS (klass), REAL_ARG_CAPS,
+ g_param_spec_boxed ("caps", "Caps", "The capabilities of the pad",
+ GST_TYPE_CAPS, G_PARAM_READABLE));
#ifndef GST_DISABLE_LOADSAVE
gstobject_class->save_thyself = GST_DEBUG_FUNCPTR (gst_pad_save_thyself);
pad->direction = GST_PAD_UNKNOWN;
pad->peer = NULL;
- pad->sched = NULL;
- pad->sched_private = NULL;
-
pad->chainfunc = NULL;
pad->getfunc = NULL;
- pad->getregionfunc = NULL;
- pad->chainhandler = GST_DEBUG_FUNCPTR (gst_pad_push_func);
+ pad->chainhandler = NULL;
pad->gethandler = NULL;
- pad->pullregionfunc = NULL;
pad->bufferpoolfunc = NULL;
pad->ghostpads = NULL;
pad->caps = NULL;
- pad->connectfunc = NULL;
+ pad->linkfunc = NULL;
pad->getcapsfunc = NULL;
+
+ pad->convertfunc = gst_pad_convert_default;
+ pad->eventfunc = gst_pad_event_default;
+ pad->convertfunc = gst_pad_convert_default;
+ pad->queryfunc = gst_pad_query_default;
+ pad->intlinkfunc = gst_pad_get_internal_links_default;
+
+ pad->eventmaskfunc = gst_pad_get_event_masks_default;
+ pad->formatsfunc = gst_pad_get_formats_default;
+ pad->querytypefunc = gst_pad_get_query_types_default;
+
+ GST_FLAG_SET (pad, GST_PAD_DISABLED);
+ GST_FLAG_UNSET (pad, GST_PAD_NEGOTIATING);
+
+ gst_probe_dispatcher_init (&pad->probedisp);
}
static void
-gst_real_pad_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+gst_real_pad_set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec)
{
g_return_if_fail (GST_IS_PAD (object));
switch (prop_id) {
case REAL_ARG_ACTIVE:
- if (g_value_get_boolean (value)) {
- GST_DEBUG (GST_CAT_PADS, "activating pad %s:%s\n", GST_DEBUG_PAD_NAME (object));
- GST_FLAG_UNSET (object, GST_PAD_DISABLED);
- } else {
- GST_DEBUG (GST_CAT_PADS, "de-activating pad %s:%s\n", GST_DEBUG_PAD_NAME (object));
- GST_FLAG_SET (object, GST_PAD_DISABLED);
- }
- g_signal_emit (G_OBJECT (object), gst_real_pad_signals[REAL_SET_ACTIVE], 0,
- !GST_FLAG_IS_SET (object, GST_PAD_DISABLED));
+ gst_pad_set_active (GST_PAD (object), g_value_get_boolean (value));
break;
default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
-gst_real_pad_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+gst_real_pad_get_property (GObject *object, guint prop_id,
+ GValue *value, GParamSpec *pspec)
{
- /* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_PAD (object));
switch (prop_id) {
case REAL_ARG_ACTIVE:
g_value_set_boolean (value, !GST_FLAG_IS_SET (object, GST_PAD_DISABLED));
break;
+ case REAL_ARG_CAPS:
+ g_value_set_boxed (value, GST_PAD_CAPS (GST_REAL_PAD (object)));
+ break;
default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
- * gst_pad_new:
- * @name: name of new pad
- * @direction: either GST_PAD_SRC or GST_PAD_SINK
+ * gst_pad_custom_new:
+ * @type: the #Gtype of the pad.
+ * @name: the name of the new pad.
+ * @direction: the #GstPadDirection of the pad.
*
- * Create a new pad with given name.
+ * Creates a new pad with the given name and type in the given direction.
+ * If name is NULL, a guaranteed unique name (across all pads)
+ * will be assigned.
*
- * Returns: new pad
+ * Returns: a new #GstPad, or NULL in case of an error.
*/
GstPad*
-gst_pad_new (gchar *name,
- GstPadDirection direction)
+gst_pad_custom_new (GType type, const gchar *name,
+ GstPadDirection direction)
{
GstRealPad *pad;
- g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (direction != GST_PAD_UNKNOWN, NULL);
- pad = g_object_new (gst_real_pad_get_type (), NULL);
+ pad = g_object_new (type, NULL);
gst_object_set_name (GST_OBJECT (pad), name);
GST_RPAD_DIRECTION (pad) = direction;
}
/**
- * gst_pad_new_from_template:
- * @templ: the pad template to use
- * @name: the name of the element
+ * gst_pad_new:
+ * @name: the name of the new pad.
+ * @direction: the #GstPadDirection of the pad.
+ *
+ * Creates a new real pad with the given name in the given direction.
+ * If name is NULL, a guaranteed unique name (across all pads)
+ * will be assigned.
+ *
+ * Returns: a new #GstPad, or NULL in case of an error.
+ */
+GstPad*
+gst_pad_new (const gchar *name,
+ GstPadDirection direction)
+{
+ return gst_pad_custom_new (gst_real_pad_get_type (), name, direction);
+}
+
+/**
+ * gst_pad_custom_new_from_template:
+ * @type: the custom #GType of the pad.
+ * @templ: the #GstPadTemplate to instantiate from.
+ * @name: the name of the new pad.
*
- * Create a new pad with given name from the given template.
+ * Creates a new custom pad with the given name from the given template.
+ * If name is NULL, a guaranteed unique name (across all pads)
+ * will be assigned.
*
- * Returns: new pad
+ * Returns: a new #GstPad, or NULL in case of an error.
*/
GstPad*
-gst_pad_new_from_template (GstPadTemplate *templ,
- gchar *name)
+gst_pad_custom_new_from_template (GType type, GstPadTemplate *templ,
+ const gchar *name)
{
GstPad *pad;
- g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (templ != NULL, NULL);
pad = gst_pad_new (name, templ->direction);
-
- gst_object_ref (GST_OBJECT (templ));
- GST_PAD_PADTEMPLATE (pad) = templ;
-
+ gst_pad_set_pad_template (pad, templ);
+
return pad;
}
/**
+ * gst_pad_new_from_template:
+ * @templ: the pad template to use
+ * @name: the name of the element
+ *
+ * Creates a new real pad with the given name from the given template.
+ * If name is NULL, a guaranteed unique name (across all pads)
+ * will be assigned.
+ *
+ * Returns: a new #GstPad, or NULL in case of an error.
+ */
+GstPad*
+gst_pad_new_from_template (GstPadTemplate *templ, const gchar *name)
+{
+ return gst_pad_custom_new_from_template (gst_real_pad_get_type (),
+ templ, name);
+}
+
+/**
* gst_pad_get_direction:
- * @pad: the Pad to get the direction from
+ * @pad: a #GstPad to get the direction of.
*
- * Get the direction of the pad.
+ * Gets the direction of the pad.
*
- * Returns: the direction of the pad
+ * Returns: the #GstPadDirection of the pad.
*/
GstPadDirection
gst_pad_get_direction (GstPad *pad)
{
- g_return_val_if_fail (pad != NULL, GST_PAD_UNKNOWN);
g_return_val_if_fail (GST_IS_PAD (pad), GST_PAD_UNKNOWN);
return GST_PAD_DIRECTION (pad);
}
/**
+ * gst_pad_set_active:
+ * @pad: the #GstPad to activate or deactivate.
+ * @active: TRUE to activate the pad.
+ *
+ * Activates or deactivates the given pad.
+ */
+void
+gst_pad_set_active (GstPad *pad, gboolean active)
+{
+ GstRealPad *realpad;
+ gboolean old;
+
+ g_return_if_fail (GST_IS_PAD (pad));
+
+ old = GST_PAD_IS_ACTIVE (pad);
+
+ if (old == active)
+ return;
+
+ realpad = GST_PAD_REALIZE (pad);
+
+ if (active) {
+ GST_CAT_DEBUG (GST_CAT_PADS, "activating pad %s:%s",
+ GST_DEBUG_PAD_NAME (realpad));
+ GST_FLAG_UNSET (realpad, GST_PAD_DISABLED);
+ } else {
+ GST_CAT_DEBUG (GST_CAT_PADS, "de-activating pad %s:%s",
+ GST_DEBUG_PAD_NAME (realpad));
+ GST_FLAG_SET (realpad, GST_PAD_DISABLED);
+ }
+ if (old != active)
+ g_object_notify (G_OBJECT (realpad), "active");
+}
+
+/**
+ * gst_pad_is_active:
+ * @pad: the #GstPad to query
+ *
+ * Query if a pad is active
+ *
+ * Returns: TRUE if the pad is active.
+ */
+gboolean
+gst_pad_is_active (GstPad *pad)
+{
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+
+ return !GST_FLAG_IS_SET (pad, GST_PAD_DISABLED);
+}
+
+/**
* gst_pad_set_name:
- * @pad: the pad to set the name of
- * @name: the name of the pad
+ * @pad: a #GstPad to set the name of.
+ * @name: the name of the pad.
*
- * Set the name of a pad.
+ * Sets the name of a pad. If name is NULL, then a guaranteed unique
+ * name will be assigned.
*/
void
-gst_pad_set_name (GstPad *pad,
- const gchar *name)
+gst_pad_set_name (GstPad *pad, const gchar *name)
{
- g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
gst_object_set_name (GST_OBJECT (pad), name);
/**
* gst_pad_get_name:
- * @pad: the pad to get the name of
+ * @pad: a #GstPad to get the name of.
*
- * Get the name of a pad.
+ * Gets the name of a pad.
*
- * Returns: the name of the pad, don't free.
+ * Returns: the name of the pad. This is not a newly allocated pointer
+ * so you must not free it.
*/
const gchar*
gst_pad_get_name (GstPad *pad)
/**
* gst_pad_set_chain_function:
- * @pad: the pad to set the chain function for
- * @chain: the chain function
+ * @pad: a #GstPad to set the chain function for.
+ * @chain: the #GstPadChainFunction to set.
*
- * Set the given chain function for the pad.
+ * Sets the given chain function for the pad.
*/
void
-gst_pad_set_chain_function (GstPad *pad,
- GstPadChainFunction chain)
+gst_pad_set_chain_function (GstPad *pad, GstPadChainFunction chain)
{
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_REAL_PAD (pad));
+ g_return_if_fail (GST_RPAD_DIRECTION (pad) == GST_PAD_SINK);
- GST_RPAD_CHAINFUNC(pad) = chain;
- GST_DEBUG (GST_CAT_PADS, "chainfunc for %s:%s set to %s\n",
+ GST_RPAD_CHAINFUNC (pad) = chain;
+ GST_CAT_DEBUG (GST_CAT_PADS, "chainfunc for %s:%s set to %s",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (chain));
}
/**
* gst_pad_set_get_function:
- * @pad: the pad to set the get function for
- * @get: the get function
+ * @pad: a #GstPad to set the get function for.
+ * @get: the #GstPadGetFunction to set.
*
- * Set the given get function for the pad.
+ * Sets the given get function for the pad.
*/
void
gst_pad_set_get_function (GstPad *pad,
{
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_REAL_PAD (pad));
+ g_return_if_fail (GST_RPAD_DIRECTION (pad) == GST_PAD_SRC);
- GST_RPAD_GETFUNC(pad) = get;
- GST_DEBUG (GST_CAT_PADS, "getfunc for %s:%s set to %s\n",
+ GST_RPAD_GETFUNC (pad) = get;
+
+ GST_CAT_DEBUG (GST_CAT_PADS, "getfunc for %s:%s set to %s",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (get));
}
/**
* gst_pad_set_event_function:
- * @pad: the pad to set the event handler for
- * @event: the event handler
+ * @pad: a #GstPad to set the event handler for.
+ * @event: the #GstPadEventFunction to set.
*
- * Set the given event handler for the pad.
+ * Sets the given event handler for the pad.
*/
void
gst_pad_set_event_function (GstPad *pad,
GstPadEventFunction event)
{
- g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_REAL_PAD (pad));
+ g_return_if_fail (GST_RPAD_DIRECTION (pad) == GST_PAD_SRC);
- GST_RPAD_EVENTFUNC(pad) = event;
- GST_DEBUG (GST_CAT_PADS, "eventfunc for %s:%s set to %s\n",
+ GST_RPAD_EVENTFUNC (pad) = event;
+
+ GST_CAT_DEBUG (GST_CAT_PADS, "eventfunc for %s:%s set to %s",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (event));
}
/**
- * gst_pad_set_getregion_function:
- * @pad: the pad to set the getregion function for
- * @getregion: the getregion function
+ * gst_pad_set_event_mask_function:
+ * @pad: a #GstPad to set the event mask function for.
+ * @mask_func: the #GstPadEventMaskFunction to set.
+ *
+ * Sets the given event mask function for the pad.
+ */
+void
+gst_pad_set_event_mask_function (GstPad *pad,
+ GstPadEventMaskFunction mask_func)
+{
+ g_return_if_fail (GST_IS_REAL_PAD (pad));
+
+ GST_RPAD_EVENTMASKFUNC (pad) = mask_func;
+
+ GST_CAT_DEBUG (GST_CAT_PADS, "eventmaskfunc for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (mask_func));
+}
+
+/**
+ * gst_pad_get_event_masks:
+ * @pad: a #GstPad to get the event mask for.
+ *
+ * Gets the array of eventmasks from the given pad.
+ *
+ * Returns: an array with eventmasks, the list is ended
+ * with 0
+ */
+const GstEventMask*
+gst_pad_get_event_masks (GstPad *pad)
+{
+ GstRealPad *rpad;
+
+ if (pad == NULL)
+ return FALSE;
+
+ rpad = GST_PAD_REALIZE (pad);
+
+ g_return_val_if_fail (rpad, FALSE);
+
+ if (GST_RPAD_EVENTMASKFUNC (rpad))
+ return GST_RPAD_EVENTMASKFUNC (rpad) (GST_PAD_CAST (pad));
+
+ return NULL;
+}
+
+static gboolean
+gst_pad_get_event_masks_dispatcher (GstPad *pad, const GstEventMask **data)
+{
+ *data = gst_pad_get_event_masks (pad);
+
+ return TRUE;
+}
+
+/**
+ * gst_pad_get_event_masks_default:
+ * @pad: a #GstPad to get the event mask for.
+ *
+ * Invokes the default event masks dispatcher on the pad.
+ *
+ * Returns: an array with eventmasks, the list is ended
+ * with 0
+ */
+const GstEventMask*
+gst_pad_get_event_masks_default (GstPad *pad)
+{
+ GstEventMask *result = NULL;
+
+ gst_pad_dispatcher (pad, (GstPadDispatcherFunction)
+ gst_pad_get_event_masks_dispatcher, &result);
+
+ return result;
+}
+
+/**
+ * gst_pad_set_convert_function:
+ * @pad: a #GstPad to set the convert function for.
+ * @convert: the #GstPadConvertFunction to set.
+ *
+ * Sets the given convert function for the pad.
+ */
+void
+gst_pad_set_convert_function (GstPad *pad,
+ GstPadConvertFunction convert)
+{
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_REAL_PAD (pad));
+
+ GST_RPAD_CONVERTFUNC (pad) = convert;
+
+ GST_CAT_DEBUG (GST_CAT_PADS, "convertfunc for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (convert));
+}
+
+/**
+ * gst_pad_set_query_function:
+ * @pad: the #GstPad to set the query function for.
+ * @query: the #GstPadQueryFunction to set.
+ *
+ * Set the given query function for the pad.
+ */
+void
+gst_pad_set_query_function (GstPad *pad, GstPadQueryFunction query)
+{
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_REAL_PAD (pad));
+
+ GST_RPAD_QUERYFUNC (pad) = query;
+
+ GST_CAT_DEBUG (GST_CAT_PADS, "queryfunc for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (query));
+}
+
+/**
+ * gst_pad_set_query_type_function:
+ * @pad: the #GstPad to set the query type function for.
+ * @type_func: the #GstPadQueryTypeFunction to set.
+ *
+ * Set the given query type function for the pad.
+ */
+void
+gst_pad_set_query_type_function (GstPad *pad, GstPadQueryTypeFunction type_func)
+{
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_REAL_PAD (pad));
+
+ GST_RPAD_QUERYTYPEFUNC (pad) = type_func;
+
+ GST_CAT_DEBUG (GST_CAT_PADS, "querytypefunc for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (type_func));
+}
+
+/**
+ * gst_pad_get_query_types:
+ * @pad: the #GstPad to query
+ *
+ * Get an array of supported queries that can be performed
+ * on this pad.
+ *
+ * Returns: an array of querytypes anded with 0.
+ */
+const GstQueryType*
+gst_pad_get_query_types (GstPad *pad)
+{
+ GstRealPad *rpad;
+
+ if (pad == NULL)
+ return FALSE;
+
+ rpad = GST_PAD_REALIZE (pad);
+
+ g_return_val_if_fail (rpad, FALSE);
+
+ if (GST_RPAD_QUERYTYPEFUNC (rpad))
+ return GST_RPAD_QUERYTYPEFUNC (rpad) (GST_PAD_CAST (pad));
+
+ return NULL;
+}
+
+static gboolean
+gst_pad_get_query_types_dispatcher (GstPad *pad, const GstQueryType **data)
+{
+ *data = gst_pad_get_query_types (pad);
+
+ return TRUE;
+}
+
+/**
+ * gst_pad_get_query_types_default:
+ * @pad: the #GstPad to query
+ *
+ * Invoke the default dispatcher for the query types on
+ * the pad.
+ *
+ * Returns: an array of querytypes anded with 0.
+ */
+const GstQueryType*
+gst_pad_get_query_types_default (GstPad *pad)
+{
+ GstQueryType *result = NULL;
+
+ gst_pad_dispatcher (pad, (GstPadDispatcherFunction)
+ gst_pad_get_query_types_dispatcher, &result);
+
+ return result;
+}
+
+/**
+ * gst_pad_set_internal_link_function:
+ * @pad: a #GstPad to set the internal link function for.
+ * @intlink: the #GstPadIntLinkFunction to set.
+ *
+ * Sets the given internal link function for the pad.
+ */
+void
+gst_pad_set_internal_link_function (GstPad *pad,
+ GstPadIntLinkFunction intlink)
+{
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_REAL_PAD (pad));
+
+ GST_RPAD_INTLINKFUNC (pad) = intlink;
+ GST_CAT_DEBUG (GST_CAT_PADS, "internal link for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (intlink));
+}
+
+/**
+ * gst_pad_set_formats_function:
+ * @pad: the #GstPad to set the formats function for.
+ * @formats: the #GstPadFormatsFunction to set.
+ *
+ * Sets the given formats function for the pad.
+ */
+void
+gst_pad_set_formats_function (GstPad *pad, GstPadFormatsFunction formats)
+{
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_REAL_PAD (pad));
+
+ GST_RPAD_FORMATSFUNC (pad) = formats;
+ GST_CAT_DEBUG (GST_CAT_PADS, "formats function for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (formats));
+}
+
+/**
+ * gst_pad_set_link_function:
+ * @pad: a #GstPad to set the link function for.
+ * @link: the #GstPadLinkFunction to set.
*
- * Set the given getregion function for the pad.
+ * Sets the given link function for the pad. It will be called
+ * when the pad is linked or relinked with caps.
*/
void
-gst_pad_set_getregion_function (GstPad *pad,
- GstPadGetRegionFunction getregion)
+gst_pad_set_link_function (GstPad *pad,
+ GstPadLinkFunction link)
{
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_REAL_PAD (pad));
- GST_RPAD_GETREGIONFUNC(pad) = getregion;
- GST_DEBUG (GST_CAT_PADS, "getregionfunc for %s:%s set to %s\n",
- GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (getregion));
+ GST_RPAD_LINKFUNC (pad) = link;
+ GST_CAT_DEBUG (GST_CAT_PADS, "linkfunc for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (link));
}
/**
- * gst_pad_set_connect_function:
- * @pad: the pad to set the connect function for
- * @connect: the connect function
+ * gst_pad_set_unlink_function:
+ * @pad: a #GstPad to set the unlink function for.
+ * @unlink: the #GstPadUnlinkFunction to set.
*
- * Set the given connect function for the pad. It will be called
- * when the pad is connected or reconnected with caps.
+ * Sets the given unlink function for the pad. It will be called
+ * when the pad is unlinked.
*/
void
-gst_pad_set_connect_function (GstPad *pad,
- GstPadConnectFunction connect)
+gst_pad_set_unlink_function (GstPad *pad,
+ GstPadUnlinkFunction unlink)
{
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_REAL_PAD (pad));
- GST_RPAD_CONNECTFUNC (pad) = connect;
- GST_DEBUG (GST_CAT_PADS, "connectfunc for %s:%s set to %s\n",
- GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (connect));
+ GST_RPAD_UNLINKFUNC (pad) = unlink;
+ GST_CAT_DEBUG (GST_CAT_PADS, "unlinkfunc for %s:%s set to %s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (unlink));
}
/**
* gst_pad_set_getcaps_function:
- * @pad: the pad to set the getcaps function for
- * @getcaps: the getcaps function
+ * @pad: a #GstPad to set the getcaps function for.
+ * @getcaps: the #GstPadGetCapsFunction to set.
*
- * Set the given getcaps function for the pad.
+ * Sets the given getcaps function for the pad.
*/
void
gst_pad_set_getcaps_function (GstPad *pad,
g_return_if_fail (GST_IS_REAL_PAD (pad));
GST_RPAD_GETCAPSFUNC (pad) = getcaps;
- GST_DEBUG (GST_CAT_PADS, "getcapsfunc for %s:%s set to %s\n",
+ GST_CAT_DEBUG (GST_CAT_PADS, "getcapsfunc for %s:%s set to %s",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (getcaps));
}
/**
* gst_pad_set_bufferpool_function:
- * @pad: the pad to set the bufferpool function for
- * @bufpool: the bufferpool function
+ * @pad: a #GstPad to set the bufferpool function for.
+ * @bufpool: the #GstPadBufferPoolFunction to set.
*
- * Set the given bufferpool function for the pad.
+ * Sets the given bufferpool function for the pad. Note that the
+ * bufferpool function can only be set on sinkpads.
*/
void
gst_pad_set_bufferpool_function (GstPad *pad,
{
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_REAL_PAD (pad));
+ g_return_if_fail (GST_PAD_IS_SINK (pad));
GST_RPAD_BUFFERPOOLFUNC (pad) = bufpool;
- GST_DEBUG (GST_CAT_PADS, "bufferpoolfunc for %s:%s set to %s\n",
+ GST_CAT_DEBUG (GST_CAT_PADS, "bufferpoolfunc for %s:%s set to %s",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (bufpool));
}
-static void
-gst_pad_push_func(GstPad *pad, GstBuffer *buf)
-{
- if (GST_RPAD_CHAINFUNC (GST_RPAD_PEER (pad)) != NULL) {
- GST_DEBUG (GST_CAT_DATAFLOW, "calling chain function %s\n",
- GST_DEBUG_FUNCPTR_NAME (GST_RPAD_CHAINFUNC (GST_RPAD_PEER (pad))));
- (GST_RPAD_CHAINFUNC (GST_RPAD_PEER (pad))) (pad, buf);
- } else {
- GST_DEBUG (GST_CAT_DATAFLOW, "default pad_push handler in place, no chain function\n");
- g_warning ("(internal error) default pad_push in place for pad %s:%s but it has no chain function",
- GST_DEBUG_PAD_NAME (pad));
- }
-}
-
-
/**
- * gst_pad_disconnect:
- * @srcpad: the source pad to disconnect
- * @sinkpad: the sink pad to disconnect
+ * gst_pad_unlink:
+ * @srcpad: the source #GstPad to unlink.
+ * @sinkpad: the sink #GstPad to unlink.
*
- * Disconnects the source pad from the sink pad.
+ * Unlinks the source pad from the sink pad.
*/
void
-gst_pad_disconnect (GstPad *srcpad,
+gst_pad_unlink (GstPad *srcpad,
GstPad *sinkpad)
{
GstRealPad *realsrc, *realsink;
+ GstScheduler *src_sched, *sink_sched;
/* generic checks */
g_return_if_fail (srcpad != NULL);
g_return_if_fail (sinkpad != NULL);
g_return_if_fail (GST_IS_PAD (sinkpad));
- GST_INFO (GST_CAT_ELEMENT_PADS, "disconnecting %s:%s(%p) and %s:%s(%p)",
- GST_DEBUG_PAD_NAME (srcpad), srcpad, GST_DEBUG_PAD_NAME (sinkpad), sinkpad);
+ GST_CAT_INFO (GST_CAT_ELEMENT_PADS, "unlinking %s:%s(%p) and %s:%s(%p)",
+ GST_DEBUG_PAD_NAME (srcpad), srcpad,
+ GST_DEBUG_PAD_NAME (sinkpad), sinkpad);
/* now we need to deal with the real/ghost stuff */
realsrc = GST_PAD_REALIZE (srcpad);
realsink = GST_PAD_REALIZE (sinkpad);
g_return_if_fail (GST_RPAD_PEER (realsrc) != NULL);
- g_return_if_fail (GST_RPAD_PEER (realsink) != NULL);
+ g_return_if_fail (GST_RPAD_PEER (realsink) == realsrc);
if ((GST_RPAD_DIRECTION (realsrc) == GST_PAD_SINK) &&
(GST_RPAD_DIRECTION (realsink) == GST_PAD_SRC)) {
g_return_if_fail ((GST_RPAD_DIRECTION (realsrc) == GST_PAD_SRC) &&
(GST_RPAD_DIRECTION (realsink) == GST_PAD_SINK));
+ if (GST_RPAD_UNLINKFUNC (srcpad)) {
+ GST_RPAD_UNLINKFUNC (srcpad) (srcpad);
+ }
+ if (GST_RPAD_UNLINKFUNC (sinkpad)) {
+ GST_RPAD_UNLINKFUNC (sinkpad) (sinkpad);
+ }
+
+ /* get the schedulers before we unlink */
+ src_sched = gst_pad_get_scheduler (GST_PAD_CAST (realsrc));
+ sink_sched = gst_pad_get_scheduler (GST_PAD_CAST (realsink));
+
/* first clear peers */
GST_RPAD_PEER (realsrc) = NULL;
GST_RPAD_PEER (realsink) = NULL;
/* reset the filters, both filters are refcounted once */
if (GST_RPAD_FILTER (realsrc)) {
- gst_caps_unref (GST_RPAD_FILTER (realsrc));
- GST_RPAD_FILTER (realsink) = NULL;
- GST_RPAD_FILTER (realsrc) = NULL;
+ gst_caps_replace (&GST_RPAD_FILTER (realsink), NULL);
+ gst_caps_replace (&GST_RPAD_FILTER (realsrc), NULL);
}
/* now tell the scheduler */
- if (GST_PAD_PARENT (realsrc)->sched)
- gst_scheduler_pad_disconnect (GST_PAD_PARENT (realsrc)->sched, (GstPad *)realsrc, (GstPad *)realsink);
- else if (GST_PAD_PARENT (realsink)->sched)
- gst_scheduler_pad_disconnect (GST_PAD_PARENT (realsink)->sched, (GstPad *)realsrc, (GstPad *)realsink);
+ if (src_sched && src_sched == sink_sched) {
+ gst_scheduler_pad_unlink (src_sched,
+ GST_PAD_CAST (realsrc),
+ GST_PAD_CAST (realsink));
+ }
/* hold a reference, as they can go away in the signal handlers */
gst_object_ref (GST_OBJECT (realsrc));
gst_object_ref (GST_OBJECT (realsink));
- /* fire off a signal to each of the pads telling them that they've been disconnected */
- g_signal_emit (G_OBJECT (realsrc), gst_real_pad_signals[REAL_DISCONNECTED], 0, realsink);
- g_signal_emit (G_OBJECT (realsink), gst_real_pad_signals[REAL_DISCONNECTED], 0, realsrc);
+ /* fire off a signal to each of the pads telling them
+ * that they've been unlinked */
+ g_signal_emit (G_OBJECT (realsrc), gst_real_pad_signals[REAL_UNLINKED],
+ 0, realsink);
+ g_signal_emit (G_OBJECT (realsink), gst_real_pad_signals[REAL_UNLINKED],
+ 0, realsrc);
- GST_INFO (GST_CAT_ELEMENT_PADS, "disconnected %s:%s and %s:%s",
+ GST_CAT_INFO (GST_CAT_ELEMENT_PADS, "unlinked %s:%s and %s:%s",
GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad));
gst_object_unref (GST_OBJECT (realsrc));
gst_object_unref (GST_OBJECT (realsink));
}
+static gboolean
+gst_pad_check_schedulers (GstRealPad *realsrc, GstRealPad *realsink)
+{
+ GstScheduler *src_sched, *sink_sched;
+ gint num_decoupled = 0;
+
+ src_sched = gst_pad_get_scheduler (GST_PAD_CAST (realsrc));
+ sink_sched = gst_pad_get_scheduler (GST_PAD_CAST (realsink));
+
+ if (src_sched && sink_sched) {
+ if (GST_FLAG_IS_SET (GST_PAD_PARENT (realsrc), GST_ELEMENT_DECOUPLED))
+ num_decoupled++;
+ if (GST_FLAG_IS_SET (GST_PAD_PARENT (realsink), GST_ELEMENT_DECOUPLED))
+ num_decoupled++;
+
+ if (src_sched != sink_sched && num_decoupled != 1) {
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
/**
- * gst_pad_can_connect_filtered:
- * @srcpad: the source pad to connect
- * @sinkpad: the sink pad to connect
- * @filtercaps: the filter caps.
+ * gst_pad_can_link_filtered:
+ * @srcpad: the source #GstPad to link.
+ * @sinkpad: the sink #GstPad to link.
+ * @filtercaps: the filter #GstCaps.
*
- * Checks if the source pad and the sink pad can be connected.
- * The filter indicates the media type that should flow trought this connection.
+ * Checks if the source pad and the sink pad can be linked when constrained
+ * by the given filter caps.
*
- * Returns: TRUE if the pad can be connected, FALSE otherwise
+ * Returns: TRUE if the pads can be linked, FALSE otherwise.
*/
gboolean
-gst_pad_can_connect_filtered (GstPad *srcpad, GstPad *sinkpad, GstCaps *filtercaps)
+gst_pad_can_link_filtered (GstPad *srcpad, GstPad *sinkpad,
+ GstCaps *filtercaps)
{
- gint num_decoupled = 0;
GstRealPad *realsrc, *realsink;
/* generic checks */
g_return_val_if_fail (GST_PAD_PARENT (realsrc) != NULL, FALSE);
g_return_val_if_fail (GST_PAD_PARENT (realsink) != NULL, FALSE);
- if (realsrc->sched && realsink->sched) {
- if (GST_FLAG_IS_SET (GST_PAD_PARENT (realsrc), GST_ELEMENT_DECOUPLED))
- num_decoupled++;
- if (GST_FLAG_IS_SET (GST_PAD_PARENT (realsink), GST_ELEMENT_DECOUPLED))
- num_decoupled++;
-
- if (realsrc->sched != realsink->sched && num_decoupled != 1) {
- g_warning ("connecting pads with different scheds requires exactly one decoupled element (queue)\n");
- return FALSE;
- }
+ if (!gst_pad_check_schedulers (realsrc, realsink)) {
+ g_warning ("linking pads with different scheds requires "
+ "exactly one decoupled element (queue)");
+ return FALSE;
}
-
+
/* check if the directions are compatible */
if (!(((GST_RPAD_DIRECTION (realsrc) == GST_PAD_SINK) &&
(GST_RPAD_DIRECTION (realsink) == GST_PAD_SRC)) ||
((GST_RPAD_DIRECTION (realsrc) == GST_PAD_SRC) &&
(GST_RPAD_DIRECTION (realsink) == GST_PAD_SINK))))
- {
return FALSE;
- }
-
+
return TRUE;
}
/**
- * gst_pad_can_connect:
- * @srcpad: the source pad to connect
- * @sinkpad: the sink pad to connect
+ * gst_pad_can_link:
+ * @srcpad: the source #GstPad to link.
+ * @sinkpad: the sink #GstPad to link.
*
- * Checks if the source pad can be connected to the sink pad.
+ * Checks if the source pad and the sink pad can be link.
*
- * Returns: TRUE if the pads can be connected, FALSE otherwise
+ * Returns: TRUE if the pads can be linked, FALSE otherwise.
*/
gboolean
-gst_pad_can_connect (GstPad *srcpad, GstPad *sinkpad)
+gst_pad_can_link (GstPad *srcpad, GstPad *sinkpad)
{
- return gst_pad_can_connect_filtered (srcpad, sinkpad, NULL);
+ return gst_pad_can_link_filtered (srcpad, sinkpad, NULL);
}
/**
- * gst_pad_connect_filtered:
- * @srcpad: the source pad to connect
- * @sinkpad: the sink pad to connect
- * @filtercaps: the filter caps.
+ * gst_pad_link_filtered:
+ * @srcpad: the source #GstPad to link.
+ * @sinkpad: the sink #GstPad to link.
+ * @filtercaps: the filter #GstCaps.
*
- * Connects the source pad to the sink pad. The filter indicates the media type
- * that should flow trought this connection.
+ * Links the source pad and the sink pad, constrained
+ * by the given filter caps. This function sinks the caps.
*
- * Returns: TRUE if the pad could be connected, FALSE otherwise
+ * Returns: TRUE if the pads have been linked, FALSE otherwise.
*/
gboolean
-gst_pad_connect_filtered (GstPad *srcpad, GstPad *sinkpad, GstCaps *filtercaps)
+gst_pad_link_filtered (GstPad *srcpad, GstPad *sinkpad, GstCaps *filtercaps)
{
GstRealPad *realsrc, *realsink;
- gint num_decoupled = 0;
+ GstScheduler *src_sched, *sink_sched;
/* generic checks */
g_return_val_if_fail (srcpad != NULL, FALSE);
g_return_val_if_fail (sinkpad != NULL, FALSE);
g_return_val_if_fail (GST_IS_PAD (sinkpad), FALSE);
- GST_INFO (GST_CAT_PADS, "connecting %s:%s and %s:%s",
+ GST_CAT_INFO (GST_CAT_PADS, "trying to link %s:%s and %s:%s",
GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad));
/* now we need to deal with the real/ghost stuff */
realsink = GST_PAD_REALIZE (sinkpad);
if ((GST_PAD (realsrc) != srcpad) || (GST_PAD (realsink) != sinkpad)) {
- GST_INFO (GST_CAT_PADS, "*actually* connecting %s:%s and %s:%s",
+ GST_CAT_INFO (GST_CAT_PADS, "*actually* linking %s:%s and %s:%s",
GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
}
-
- g_return_val_if_fail (GST_RPAD_PEER (realsrc) == NULL, FALSE);
- g_return_val_if_fail (GST_RPAD_PEER (realsink) == NULL, FALSE);
- g_return_val_if_fail (GST_PAD_PARENT (realsrc) != NULL, FALSE);
- g_return_val_if_fail (GST_PAD_PARENT (realsink) != NULL, FALSE);
-
- if (realsrc->sched && realsink->sched) {
- if (GST_FLAG_IS_SET (GST_PAD_PARENT (realsrc), GST_ELEMENT_DECOUPLED))
- num_decoupled++;
- if (GST_FLAG_IS_SET (GST_PAD_PARENT (realsink), GST_ELEMENT_DECOUPLED))
- num_decoupled++;
-
- if (realsrc->sched != realsink->sched && num_decoupled != 1) {
- g_warning ("connecting pads with different scheds requires exactly one decoupled element (queue)\n");
- return FALSE;
- }
+ /* FIXME: shouldn't we convert this to g_return_val_if_fail? */
+ if (GST_RPAD_PEER (realsrc) != NULL) {
+ GST_CAT_INFO (GST_CAT_PADS, "Real source pad %s:%s has a peer, failed",
+ GST_DEBUG_PAD_NAME (realsrc));
+ return FALSE;
+ }
+ if (GST_RPAD_PEER (realsink) != NULL) {
+ GST_CAT_INFO (GST_CAT_PADS, "Real sink pad %s:%s has a peer, failed",
+ GST_DEBUG_PAD_NAME (realsink));
+ return FALSE;
+ }
+ if (GST_PAD_PARENT (realsrc) == NULL) {
+ GST_CAT_INFO (GST_CAT_PADS, "Real src pad %s:%s has no parent, failed",
+ GST_DEBUG_PAD_NAME (realsrc));
+ return FALSE;
+ }
+ if (GST_PAD_PARENT (realsink) == NULL) {
+ GST_CAT_INFO (GST_CAT_PADS, "Real sink pad %s:%s has no parent, failed",
+ GST_DEBUG_PAD_NAME (realsrc));
+ return FALSE;
}
+ if (!gst_pad_check_schedulers (realsrc, realsink)) {
+ g_warning ("linking pads with different scheds requires "
+ "exactly one decoupled element (such as queue)");
+ return FALSE;
+ }
+
/* check for reversed directions and swap if necessary */
if ((GST_RPAD_DIRECTION (realsrc) == GST_PAD_SINK) &&
(GST_RPAD_DIRECTION (realsink) == GST_PAD_SRC)) {
realsrc = realsink;
realsink = temppad;
}
- g_return_val_if_fail ((GST_RPAD_DIRECTION (realsrc) == GST_PAD_SRC) &&
- (GST_RPAD_DIRECTION (realsink) == GST_PAD_SINK), FALSE);
-
+ if (GST_RPAD_DIRECTION (realsrc) != GST_PAD_SRC) {
+ GST_CAT_INFO (GST_CAT_PADS, "Real src pad %s:%s is not a source pad, failed",
+ GST_DEBUG_PAD_NAME (realsrc));
+ return FALSE;
+ }
+ if (GST_RPAD_DIRECTION (realsink) != GST_PAD_SINK) {
+ GST_CAT_INFO (GST_CAT_PADS, "Real sink pad %s:%s is not a sink pad, failed",
+ GST_DEBUG_PAD_NAME (realsink));
+ return FALSE;
+ }
/* first set peers */
GST_RPAD_PEER (realsrc) = realsink;
GST_RPAD_PEER (realsink) = realsrc;
/* try to negotiate the pads, we don't need to clear the caps here */
- if (!gst_pad_try_reconnect_filtered_func (realsrc, realsink, filtercaps, FALSE)) {
- GST_DEBUG (GST_CAT_CAPS, "pads cannot connect\n");
+ if (!gst_pad_try_relink_filtered_func (realsrc, realsink,
+ filtercaps, FALSE)) {
+ GST_CAT_DEBUG (GST_CAT_CAPS, "relink_filtered_func failed, can't link");
GST_RPAD_PEER (realsrc) = NULL;
GST_RPAD_PEER (realsink) = NULL;
return FALSE;
}
-
- /* fire off a signal to each of the pads telling them that they've been connected */
- g_signal_emit (G_OBJECT (realsrc), gst_real_pad_signals[REAL_CONNECTED], 0, realsink);
- g_signal_emit (G_OBJECT (realsink), gst_real_pad_signals[REAL_CONNECTED], 0, realsrc);
- /* now tell the scheduler(s) */
- if (realsrc->sched)
- gst_scheduler_pad_connect (realsrc->sched, (GstPad *)realsrc, (GstPad *)realsink);
- else if (realsink->sched)
- gst_scheduler_pad_connect (realsink->sched, (GstPad *)realsrc, (GstPad *)realsink);
+ /* fire off a signal to each of the pads telling them
+ * that they've been linked */
+ g_signal_emit (G_OBJECT (realsrc), gst_real_pad_signals[REAL_LINKED],
+ 0, realsink);
+ g_signal_emit (G_OBJECT (realsink), gst_real_pad_signals[REAL_LINKED],
+ 0, realsrc);
+
+ src_sched = gst_pad_get_scheduler (GST_PAD_CAST (realsrc));
+ sink_sched = gst_pad_get_scheduler (GST_PAD_CAST (realsink));
- GST_INFO (GST_CAT_PADS, "connected %s:%s and %s:%s",
+ /* now tell the scheduler */
+ if (src_sched && src_sched == sink_sched) {
+ gst_scheduler_pad_link (src_sched,
+ GST_PAD_CAST (realsrc), GST_PAD_CAST (realsink));
+ }
+ else {
+ GST_CAT_INFO (GST_CAT_PADS, "not telling link to scheduler %s:%s and %s:%s, %p %p",
+ GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad),
+ src_sched, sink_sched);
+ }
+
+ GST_CAT_INFO (GST_CAT_PADS, "linked %s:%s and %s:%s, successful",
GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad));
return TRUE;
}
/**
- * gst_pad_connect:
- * @srcpad: the source pad to connect
- * @sinkpad: the sink pad to connect
+ * gst_pad_link:
+ * @srcpad: the source #GstPad to link.
+ * @sinkpad: the sink #GstPad to link.
*
- * Connects the source pad to the sink pad.
+ * Links the source pad to the sink pad.
*
- * Returns: TRUE if the pad could be connected, FALSE otherwise
+ * Returns: TRUE if the pad could be linked, FALSE otherwise.
*/
gboolean
-gst_pad_connect (GstPad *srcpad, GstPad *sinkpad)
+gst_pad_link (GstPad *srcpad, GstPad *sinkpad)
{
- return gst_pad_connect_filtered (srcpad, sinkpad, NULL);
+ return gst_pad_link_filtered (srcpad, sinkpad, NULL);
}
/**
* gst_pad_set_parent:
- * @pad: the pad to set the parent
- * @parent: the object to set the parent to
+ * @pad: a #GstPad to set the parent of.
+ * @parent: the new parent #GstElement.
*
* Sets the parent object of a pad.
*/
void
-gst_pad_set_parent (GstPad *pad,
- GstObject *parent)
+gst_pad_set_parent (GstPad *pad, GstElement *parent)
{
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (GST_PAD_PARENT (pad) == NULL);
g_return_if_fail (parent != NULL);
g_return_if_fail (GST_IS_OBJECT (parent));
- g_return_if_fail ((gpointer)pad != (gpointer)parent);
+ g_return_if_fail ((gpointer) pad != (gpointer) parent);
- gst_object_set_parent (GST_OBJECT (pad), parent);
+ gst_object_set_parent (GST_OBJECT (pad), GST_OBJECT (parent));
}
/**
* gst_pad_get_parent:
- * @pad: the pad to get the parent from
+ * @pad: the #GstPad to get the parent of.
*
- * Get the parent object of this pad.
+ * Gets the parent object of this pad.
*
- * Returns: the parent object
+ * Returns: the parent #GstElement.
*/
GstElement*
gst_pad_get_parent (GstPad *pad)
return GST_PAD_PARENT (pad);
}
+static void
+gst_pad_set_pad_template (GstPad *pad, GstPadTemplate *templ)
+{
+ /* this function would need checks if it weren't static */
+
+ gst_object_replace ((GstObject **) &pad->padtemplate, (GstObject *) templ);
+
+ if (templ)
+ g_signal_emit (G_OBJECT (templ), gst_pad_template_signals[TEMPL_PAD_CREATED], 0, pad);
+}
/**
- * gst_pad_get_padtemplate:
- * @pad: the pad to get the padtemplate from
+ * gst_pad_get_pad_template:
+ * @pad: a #GstPad to get the pad template of.
*
- * Get the padtemplate object of this pad.
+ * Gets the pad template object of this pad.
*
- * Returns: the padtemplate object
+ * Returns: the #GstPadTemplate from which this pad was instantiated.
*/
GstPadTemplate*
-gst_pad_get_padtemplate (GstPad *pad)
+gst_pad_get_pad_template (GstPad *pad)
{
- g_return_val_if_fail (pad != NULL, NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
- return GST_PAD_PADTEMPLATE (pad);
+ return GST_PAD_PAD_TEMPLATE (pad);
}
/**
- * gst_pad_set_sched:
- * @pad: the pad to set the scheduler for
- * @sched: The scheduler to set
- *
- * Set the scheduler for the pad
- */
-void
-gst_pad_set_sched (GstPad *pad, GstScheduler *sched)
-{
- g_return_if_fail (pad != NULL);
- g_return_if_fail (GST_IS_PAD (pad));
-
- GST_RPAD_SCHED(pad) = sched;
-}
-
-/**
- * gst_pad_get_sched:
- * @pad: the pad to get the scheduler from
+ * gst_pad_get_scheduler:
+ * @pad: a #GstPad to get the scheduler of.
*
- * Get the scheduler of the pad
+ * Gets the scheduler of the pad. Since the pad does not
+ * have a scheduler of its own, the scheduler of the parent
+ * is taken. For decoupled pads, the scheduler of the peer
+ * parent is taken.
*
- * Returns: the scheduler of the pad.
+ * Returns: the #GstScheduler of the pad.
*/
GstScheduler*
-gst_pad_get_sched (GstPad *pad)
+gst_pad_get_scheduler (GstPad *pad)
{
- g_return_val_if_fail (pad != NULL, NULL);
+ GstScheduler *scheduler = NULL;
+ GstElement *parent;
+
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
-
- return GST_RPAD_SCHED(pad);
-}
+
+ parent = gst_pad_get_parent (pad);
+ if (parent) {
+ if (GST_FLAG_IS_SET (parent, GST_ELEMENT_DECOUPLED)) {
+ GstRealPad *peer = GST_RPAD_PEER (pad);
-/**
- * gst_pad_unset_sched:
- * @pad: the pad to unset the scheduler for
- *
- * Unset the scheduler for the pad
- */
-void
-gst_pad_unset_sched (GstPad *pad)
-{
- g_return_if_fail (pad != NULL);
- g_return_if_fail (GST_IS_PAD (pad));
+ if (peer) {
+ scheduler = gst_element_get_scheduler (gst_pad_get_parent (GST_PAD_CAST (peer)));
+ }
+ }
+ else {
+ scheduler = gst_element_get_scheduler (parent);
+ }
+ }
- GST_RPAD_SCHED(pad) = NULL;
+ return scheduler;
}
-
+
/**
* gst_pad_get_real_parent:
- * @pad: the pad to get the parent from
+ * @pad: a #GstPad to get the real parent of.
*
- * Get the real parent object of this pad. If the pad
- * is a ghostpad, the actual owner of the real pad is
- * returned, as opposed to the gst_pad_get_parent().
+ * Gets the real parent object of this pad. If the pad
+ * is a ghost pad, the actual owner of the real pad is
+ * returned, as opposed to #gst_pad_get_parent().
*
- * Returns: the parent object
+ * Returns: the parent #GstElement.
*/
GstElement*
gst_pad_get_real_parent (GstPad *pad)
/**
* gst_pad_add_ghost_pad:
- * @pad: the pad to set the ghost parent
- * @ghostpad: the ghost pad to add
+ * @pad: a #GstPad to attach the ghost pad to.
+ * @ghostpad: the ghost #GstPad to to the pad.
*
- * Add a ghost pad to a pad.
+ * Adds a ghost pad to a pad.
*/
void
gst_pad_add_ghost_pad (GstPad *pad,
/**
* gst_pad_remove_ghost_pad:
- * @pad: the pad to remove the ghost parent
- * @ghostpad: the ghost pad to remove from the pad
+ * @pad: a #GstPad to remove the ghost pad from.
+ * @ghostpad: the ghost #GstPad to remove from the pad.
*
- * Remove a ghost pad from a pad.
+ * Removes a ghost pad from a pad.
*/
void
gst_pad_remove_ghost_pad (GstPad *pad,
{
GstRealPad *realpad;
- g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
- g_return_if_fail (ghostpad != NULL);
g_return_if_fail (GST_IS_GHOST_PAD (ghostpad));
-
realpad = GST_PAD_REALIZE (pad);
+ g_return_if_fail (GST_GPAD_REALPAD (ghostpad) == realpad);
realpad->ghostpads = g_list_remove (realpad->ghostpads, ghostpad);
+ GST_GPAD_REALPAD (ghostpad) = NULL;
}
/**
* gst_pad_get_ghost_pad_list:
- * @pad: the pad to get the ghost parents from
+ * @pad: a #GstPad to get the ghost pads of.
*
- * Get the ghost parents of this pad.
+ * Gets the ghost pads of this pad.
*
- * Returns: a GList of ghost pads
+ * Returns: a #GList of ghost pads.
*/
GList*
gst_pad_get_ghost_pad_list (GstPad *pad)
return GST_PAD_REALIZE(pad)->ghostpads;
}
-/* an internal caps negotiation helper function does:
+/* an internal caps negotiation helper function:
*
- * 1. optinally calls the pad connect function with the provided caps
- * 2. deal with the result code of the connect function
- * 3. set fixed caps on the pad.
+ * 1. optionally calls the pad link function with the provided caps
+ * 2. deals with the result code of the link function
+ * 3. sets fixed caps on the pad.
*/
-static GstPadConnectReturn
+static GstPadLinkReturn
gst_pad_try_set_caps_func (GstRealPad *pad, GstCaps *caps, gboolean notify)
{
- GstCaps *oldcaps;
+ GstCaps *allowed = NULL;
+ GstPadTemplate *template;
GstElement *parent = GST_PAD_PARENT (pad);
+ g_return_val_if_fail (pad != NULL, GST_PAD_LINK_REFUSED);
+ g_return_val_if_fail (GST_IS_PAD (pad), GST_PAD_LINK_REFUSED);
+
/* if this pad has a parent and the parent is not READY, delay the
* negotiation */
if (parent && GST_STATE (parent) < GST_STATE_READY)
- return GST_PAD_CONNECT_DELAYED;
+ {
+ GST_CAT_DEBUG (GST_CAT_CAPS, "parent %s of pad %s:%s is not READY",
+ GST_ELEMENT_NAME (parent), GST_DEBUG_PAD_NAME (pad));
+ return GST_PAD_LINK_DELAYED;
+ }
- GST_INFO (GST_CAT_CAPS, "trying to set caps %p on pad %s:%s",
+ GST_CAT_INFO (GST_CAT_CAPS, "trying to set caps %p on pad %s:%s",
caps, GST_DEBUG_PAD_NAME (pad));
- /* we need to notify the connect function */
- if (notify && GST_RPAD_CONNECTFUNC (pad)) {
- GstPadConnectReturn res;
+ /* first see if we have to check against a filter, we ref the caps here as we're
+ * going to unref it later on */
+ if (!(allowed = gst_caps_ref (GST_RPAD_FILTER (pad)))) {
+ /* no filter, make sure we check against the padtemplate then */
+ if ((template = gst_pad_get_pad_template (GST_PAD_CAST (pad)))) {
+ allowed = gst_pad_template_get_caps (template);
+ }
+ }
+
+ /* do we have to check the caps against something? */
+ if (allowed) {
+ GstCaps *intersection;
+
+ /* check against calculated caps */
+ intersection = gst_caps_intersect (caps, allowed);
+
+ /* oops, empty intersection, caps don"t have anything in common */
+ if (!intersection) {
+ GST_CAT_INFO (GST_CAT_CAPS, "caps did not intersect with %s:%s's allowed caps",
+ GST_DEBUG_PAD_NAME (pad));
+ gst_caps_debug (caps, "caps themselves (attemped to set)");
+ gst_caps_debug (allowed,
+ "allowed caps that did not agree with caps");
+ gst_caps_unref (allowed);
+ return GST_PAD_LINK_REFUSED;
+ }
+ /* caps checks out fine, we can unref the intersection now */
+ gst_caps_unref (intersection);
+ gst_caps_unref (allowed);
+ /* given that the caps are fixed, we know that their intersection with the
+ * padtemplate caps is the same as caps itself */
+ }
+
+ /* we need to notify the link function */
+ if (notify && GST_RPAD_LINKFUNC (pad)) {
+ GstPadLinkReturn res;
gchar *debug_string;
+ gboolean negotiating;
- GST_INFO (GST_CAT_CAPS, "calling connect function on pad %s:%s",
+ GST_CAT_INFO (GST_CAT_CAPS, "calling link function on pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
- /* call the connect function */
- res = GST_RPAD_CONNECTFUNC (pad) (GST_PAD (pad), caps);
+ negotiating = GST_FLAG_IS_SET (pad, GST_PAD_NEGOTIATING);
+
+ /* set the NEGOTIATING flag if not already done */
+ if (!negotiating)
+ GST_FLAG_SET (pad, GST_PAD_NEGOTIATING);
+
+ /* call the link function */
+ res = GST_RPAD_LINKFUNC (pad) (GST_PAD (pad), caps);
+
+ /* unset again after negotiating only if we set it */
+ if (!negotiating)
+ GST_FLAG_UNSET (pad, GST_PAD_NEGOTIATING);
switch (res) {
- case GST_PAD_CONNECT_REFUSED:
+ case GST_PAD_LINK_REFUSED:
debug_string = "REFUSED";
break;
- case GST_PAD_CONNECT_OK:
+ case GST_PAD_LINK_OK:
debug_string = "OK";
break;
- case GST_PAD_CONNECT_DONE:
+ case GST_PAD_LINK_DONE:
debug_string = "DONE";
break;
- case GST_PAD_CONNECT_DELAYED:
+ case GST_PAD_LINK_DELAYED:
debug_string = "DELAYED";
break;
default:
- g_warning ("unknown return code from connect function of pad %s:%s",
- GST_DEBUG_PAD_NAME (pad));
- return GST_PAD_CONNECT_REFUSED;
+ g_warning ("unknown return code from link function of pad %s:%s %d",
+ GST_DEBUG_PAD_NAME (pad), res);
+ return GST_PAD_LINK_REFUSED;
}
- GST_INFO (GST_CAT_CAPS, "got reply %s (%d) from connect function on pad %s:%s",
- debug_string, res, GST_DEBUG_PAD_NAME (pad));
+ GST_CAT_INFO (GST_CAT_CAPS,
+ "got reply %s (%d) from link function on pad %s:%s",
+ debug_string, res, GST_DEBUG_PAD_NAME (pad));
- /* done means the connect function called another caps negotiate function
+ /* done means the link function called another caps negotiate function
* on this pad that succeeded, we dont need to continue */
- if (res == GST_PAD_CONNECT_DONE) {
- GST_INFO (GST_CAT_CAPS, "pad %s:%s is done", GST_DEBUG_PAD_NAME (pad));
- return GST_PAD_CONNECT_DONE;
+ if (res == GST_PAD_LINK_DONE) {
+ GST_CAT_INFO (GST_CAT_CAPS, "pad %s:%s is done", GST_DEBUG_PAD_NAME (pad));
+ return GST_PAD_LINK_DONE;
}
- if (res == GST_PAD_CONNECT_REFUSED) {
- GST_INFO (GST_CAT_CAPS, "pad %s:%s doesn't accept caps",
- GST_DEBUG_PAD_NAME (pad));
- return GST_PAD_CONNECT_REFUSED;
+ if (res == GST_PAD_LINK_REFUSED) {
+ GST_CAT_INFO (GST_CAT_CAPS, "pad %s:%s doesn't accept caps",
+ GST_DEBUG_PAD_NAME (pad));
+ return GST_PAD_LINK_REFUSED;
}
}
- /* we can only set caps on the pad if they are ficed */
+ /* we can only set caps on the pad if they are fixed */
if (GST_CAPS_IS_FIXED (caps)) {
- GST_INFO (GST_CAT_CAPS, "setting caps on pad %s:%s",
+ GST_CAT_INFO (GST_CAT_CAPS, "setting caps on pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
/* if we got this far all is ok, remove the old caps, set the new one */
- oldcaps = GST_PAD_CAPS (pad);
- if (caps) gst_caps_ref (caps);
- GST_PAD_CAPS (pad) = caps;
- if (oldcaps) gst_caps_unref (oldcaps);
+ gst_caps_replace_sink (&GST_PAD_CAPS (pad), caps);
+
+ g_object_notify (G_OBJECT (pad), "caps");
}
else {
- GST_INFO (GST_CAT_CAPS, "caps are not fixed on pad %s:%s, not setting them yet",
+ GST_CAT_INFO (GST_CAT_CAPS,
+ "caps are not fixed on pad %s:%s, not setting them yet",
GST_DEBUG_PAD_NAME (pad));
- }
- return GST_PAD_CONNECT_OK;
+ return GST_PAD_LINK_DELAYED;
+ }
+ return GST_PAD_LINK_OK;
}
/**
* gst_pad_try_set_caps:
- * @pad: the pad to try to set the caps on
- * @caps: the caps to set
+ * @pad: a #GstPad to try to set the caps on.
+ * @caps: the #GstCaps to set.
*
- * Try to set the caps on the given pad.
+ * Tries to set the caps on the given pad. Ownership is always taken
+ * of the caps, so you will need to unref non-floating caps.
*
- * Returns: TRUE if the caps could be set
+ * Returns: A #GstPadLinkReturn value indicating whether the caps
+ * could be set.
*/
-gboolean
+GstPadLinkReturn
gst_pad_try_set_caps (GstPad *pad, GstCaps *caps)
{
GstRealPad *peer, *realpad;
+ GstPadLinkReturn set_retval;
realpad = GST_PAD_REALIZE (pad);
peer = GST_RPAD_PEER (realpad);
- GST_INFO (GST_CAT_CAPS, "trying to set caps %p on pad %s:%s",
+ GST_CAT_INFO (GST_CAT_CAPS, "trying to set caps %p on pad %s:%s",
caps, GST_DEBUG_PAD_NAME (realpad));
+ gst_caps_debug (caps, "caps that we are trying to set");
+
+ /* try to take ownership */
+ gst_caps_ref (caps);
+ gst_caps_sink (caps);
+
/* setting non fixed caps on a pad is not allowed */
if (!GST_CAPS_IS_FIXED (caps)) {
- g_warning ("trying to set non fixed caps on pad %s:%s",
- GST_DEBUG_PAD_NAME (realpad));
- gst_caps_debug (caps);
- return FALSE;
+ GST_CAT_INFO (GST_CAT_CAPS,
+ "trying to set unfixed caps on pad %s:%s, not allowed",
+ GST_DEBUG_PAD_NAME (realpad));
+ g_warning ("trying to set non fixed caps on pad %s:%s, not allowed",
+ GST_DEBUG_PAD_NAME (realpad));
+
+ gst_caps_debug (caps, "unfixed caps");
+ set_retval = GST_PAD_LINK_DELAYED;
+ goto done;
}
+
/* if we have a peer try to set the caps, notifying the peerpad
- * if it has a connect function */
- if (peer && !gst_pad_try_set_caps_func (peer, caps, TRUE))
- return FALSE;
+ * if it has a link function */
+ if (peer && ((set_retval = gst_pad_try_set_caps_func (peer, caps, TRUE)) <= 0))
+ {
+ GST_CAT_INFO (GST_CAT_CAPS, "tried to set caps on peerpad %s:%s but couldn't, return value %d",
+ GST_DEBUG_PAD_NAME (peer), set_retval);
+ goto done;
+ }
+
/* then try to set our own caps, we don't need to be notified */
- if (!gst_pad_try_set_caps_func (realpad, caps, FALSE))
- return FALSE;
-
- return TRUE;
+ if ((set_retval = gst_pad_try_set_caps_func (realpad, caps, FALSE)) <= 0)
+ {
+ GST_CAT_INFO (GST_CAT_CAPS, "tried to set own caps on pad %s:%s but couldn't, return value %d",
+ GST_DEBUG_PAD_NAME (realpad), set_retval);
+ goto done;
+ }
+ GST_CAT_INFO (GST_CAT_CAPS, "succeeded setting caps %p on pad %s:%s, return value %d",
+ caps, GST_DEBUG_PAD_NAME (realpad), set_retval);
+ g_assert (GST_PAD_CAPS (pad));
+
+done:
+ /* if we took ownership, the caps will be freed */
+ gst_caps_unref (caps);
+
+ return set_retval;
}
-/* this is a caps negotiation convenience routine, it performs:
+/* this is a caps negotiation convenience routine, it:
*
- * 1. optionally clear any pad caps
- * 2. calculate the intersection between the two pad tamplate/getcaps caps
- * 3. calculate the intersection with the (optional) filtercaps.
- * 4. store the intersection in the pad filter
- * 5. store the app filtercaps in the pad appfilter.
- * 6. start the caps negotiation.
+ * 1. optionally clears any pad caps.
+ * 2. calculates the intersection between the two pad tamplate/getcaps caps.
+ * 3. calculates the intersection with the (optional) filtercaps.
+ * 4. stores the intersection in the pad filter.
+ * 5. stores the app filtercaps in the pad appfilter.
+ * 6. starts the caps negotiation.
*/
static gboolean
-gst_pad_try_reconnect_filtered_func (GstRealPad *srcpad, GstRealPad *sinkpad, GstCaps *filtercaps, gboolean clear)
+gst_pad_try_relink_filtered_func (GstRealPad *srcpad, GstRealPad *sinkpad,
+ GstCaps *filtercaps, gboolean clear)
{
GstCaps *srccaps, *sinkcaps;
GstCaps *intersection = NULL;
/* optinally clear the caps */
if (clear) {
- GST_INFO (GST_CAT_PADS, "reconnect filtered %s:%s and %s:%s, clearing caps",
- GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
+ GST_CAT_INFO (GST_CAT_PADS,
+ "start relink filtered %s:%s and %s:%s, clearing caps",
+ GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
- GST_PAD_CAPS (GST_PAD (realsrc)) = NULL;
- GST_PAD_CAPS (GST_PAD (realsink)) = NULL;
+ gst_caps_replace (&GST_PAD_CAPS (GST_PAD (realsrc)), NULL);
+ gst_caps_replace (&GST_PAD_CAPS (GST_PAD (realsink)), NULL);
+ gst_caps_replace (&GST_RPAD_FILTER (realsrc), NULL);
+ gst_caps_replace (&GST_RPAD_FILTER (realsink), NULL);
}
else {
- GST_INFO (GST_CAT_PADS, "reconnect filtered %s:%s and %s:%s",
+ GST_CAT_INFO (GST_CAT_PADS, "start relink filtered %s:%s and %s:%s",
GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
}
srccaps = gst_pad_get_caps (GST_PAD (realsrc));
- GST_INFO (GST_CAT_PADS, "dumping caps of pad %s:%s", GST_DEBUG_PAD_NAME (realsrc));
- gst_caps_debug (srccaps);
+ GST_CAT_DEBUG (GST_CAT_PADS, "dumping caps of pad %s:%s",
+ GST_DEBUG_PAD_NAME (realsrc));
+ gst_caps_debug (srccaps, "caps of src pad (pre-relink)");
sinkcaps = gst_pad_get_caps (GST_PAD (realsink));
- GST_INFO (GST_CAT_PADS, "dumping caps of pad %s:%s", GST_DEBUG_PAD_NAME (realsink));
- gst_caps_debug (sinkcaps);
+ GST_CAT_DEBUG (GST_CAT_PADS, "dumping caps of pad %s:%s",
+ GST_DEBUG_PAD_NAME (realsink));
+ gst_caps_debug (sinkcaps, "caps of sink pad (pre-relink)");
/* first take the intersection of the pad caps */
intersection = gst_caps_intersect (srccaps, sinkcaps);
+ gst_caps_debug (intersection, "caps of intersection");
/* if we have no intersection but one of the caps was not NULL.. */
- if (!intersection && (srccaps || sinkcaps )) {
+ if (!intersection && (srccaps || sinkcaps)) {
/* the intersection is NULL but the pad caps were not both NULL,
* this means they have no common format */
- GST_INFO (GST_CAT_PADS, "pads %s:%s and %s:%s have no common type",
- GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
+ GST_CAT_INFO (GST_CAT_PADS, "pads %s:%s and %s:%s have no common type",
+ GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
+ /* make sure any floating caps from gst_pad_get_caps are freed here */
+ gst_caps_sink (srccaps);
+ gst_caps_sink (sinkcaps);
return FALSE;
- }
- else {
- GST_INFO (GST_CAT_PADS, "pads %s:%s and %s:%s intersected to %s caps",
- GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink),
- ((intersection && GST_CAPS_IS_FIXED (intersection)) ? "fixed" : "variable"));
+ } else {
+ GST_CAT_INFO (GST_CAT_PADS, "pads %s:%s and %s:%s intersected to %s caps",
+ GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink),
+ (intersection ?
+ (GST_CAPS_IS_FIXED (intersection) ? "fixed" : "variable") :
+ "NULL"));
+
+ /* we don't need those anymore, as the caps can be floating */
+ gst_caps_sink (srccaps);
+ gst_caps_sink (sinkcaps);
/* then filter this against the app filter */
if (filtercaps) {
- GstCaps *filtered_intersection = gst_caps_intersect (intersection, filtercaps);
+ GstCaps *filtered_intersection;
+
+ filtered_intersection = gst_caps_intersect (intersection,
+ filtercaps);
- /* get rid of the old intersection here */
- gst_caps_unref (intersection);
+ gst_caps_sink (intersection);
if (!filtered_intersection) {
- GST_INFO (GST_CAT_PADS, "filtered connection between pads %s:%s and %s:%s is empty",
- GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
+ GST_CAT_INFO (GST_CAT_PADS,
+ "filtered link between pads %s:%s and %s:%s is empty",
+ GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
return FALSE;
}
intersection = filtered_intersection;
/* keep a reference to the app caps */
- GST_RPAD_APPFILTER (realsink) = filtercaps;
- GST_RPAD_APPFILTER (realsrc) = filtercaps;
+ gst_caps_replace_sink (&GST_RPAD_APPFILTER (realsink), filtercaps);
+ gst_caps_replace_sink (&GST_RPAD_APPFILTER (realsrc), filtercaps);
}
}
- GST_DEBUG (GST_CAT_CAPS, "setting filter for connection to:\n");
- gst_caps_debug (intersection);
+ GST_CAT_DEBUG (GST_CAT_CAPS, "setting filter for link to:");
+ gst_caps_debug (intersection, "filter for link");
- GST_RPAD_FILTER (realsrc) = intersection;
- GST_RPAD_FILTER (realsink) = intersection;
+ /* both the app filter and the filter, while stored on both peer pads,
+ * are equal to the same thing on both */
+ gst_caps_replace_sink (&GST_RPAD_FILTER (realsrc), intersection);
+ gst_caps_replace_sink (&GST_RPAD_FILTER (realsink), intersection);
+ gst_caps_sink (intersection);
return gst_pad_perform_negotiate (GST_PAD (realsrc), GST_PAD (realsink));
}
/**
* gst_pad_perform_negotiate:
- * @srcpad: a srcpad
- * @sinkpad: a sinkpad
+ * @srcpad: the source #GstPad.
+ * @sinkpad: the sink #GstPad.
*
- * Try to negotiate the pads.
+ * Tries to negotiate the pads.
*
- * Returns: a boolean indicating the pad succesfully negotiated.
+ * Returns: TRUE if the pads were succesfully negotiated, FALSE otherwise.
*/
gboolean
gst_pad_perform_negotiate (GstPad *srcpad, GstPad *sinkpad)
{
- GstCaps *intersection;
+ GstCaps *intersection, *filtered_intersection;
GstRealPad *realsrc, *realsink;
- GstCaps *srccaps, *sinkcaps;
+ GstCaps *srccaps, *sinkcaps, *filter;
+ gboolean res = TRUE;
+ GstElement *parent;
+
g_return_val_if_fail (srcpad != NULL, FALSE);
g_return_val_if_fail (sinkpad != NULL, FALSE);
g_return_val_if_fail (GST_RPAD_PEER (realsrc) != NULL, FALSE);
g_return_val_if_fail (GST_RPAD_PEER (realsink) == realsrc, FALSE);
+ /* shortcut negotiation */
+ parent = GST_PAD_PARENT (realsrc);
+ if (parent && GST_STATE (parent) < GST_STATE_READY) {
+ GST_CAT_DEBUG (GST_CAT_CAPS, "parent %s of pad %s:%s is not READY",
+ GST_ELEMENT_NAME (parent), GST_DEBUG_PAD_NAME (realsrc));
+ return TRUE;
+ }
+ parent = GST_PAD_PARENT (realsink);
+ if (parent && GST_STATE (parent) < GST_STATE_READY) {
+ GST_CAT_DEBUG (GST_CAT_CAPS, "parent %s of pad %s:%s is not READY",
+ GST_ELEMENT_NAME (parent), GST_DEBUG_PAD_NAME (realsink));
+ return TRUE;
+ }
+
+ GST_CAT_INFO (GST_CAT_PADS, "perform negotiate for link %s:%s-%s:%s",
+ GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
+
+ filter = GST_RPAD_APPFILTER (realsrc);
+ if (filter) {
+ GST_CAT_INFO (GST_CAT_PADS, "dumping filter for link %s:%s-%s:%s",
+ GST_DEBUG_PAD_NAME (realsrc), GST_DEBUG_PAD_NAME (realsink));
+ gst_caps_debug (filter, "link filter caps");
+ }
+
/* calculate the new caps here */
srccaps = gst_pad_get_caps (GST_PAD (realsrc));
- GST_INFO (GST_CAT_PADS, "dumping caps of pad %s:%s", GST_DEBUG_PAD_NAME (realsrc));
- gst_caps_debug (srccaps);
+ GST_CAT_DEBUG (GST_CAT_PADS, "dumping caps of pad %s:%s",
+ GST_DEBUG_PAD_NAME (realsrc));
+ gst_caps_debug (srccaps,
+ "src caps, awaiting negotiation, after applying filter");
sinkcaps = gst_pad_get_caps (GST_PAD (realsink));
- GST_INFO (GST_CAT_PADS, "dumping caps of pad %s:%s", GST_DEBUG_PAD_NAME (realsink));
- gst_caps_debug (sinkcaps);
+ GST_CAT_DEBUG (GST_CAT_PADS, "dumping caps of pad %s:%s",
+ GST_DEBUG_PAD_NAME (realsink));
+ gst_caps_debug (sinkcaps,
+ "sink caps, awaiting negotiation, after applying filter");
intersection = gst_caps_intersect (srccaps, sinkcaps);
+ filtered_intersection = gst_caps_intersect (intersection, filter);
+ gst_caps_unref (intersection);
+
+ /* no negotiation is performed if the pads have filtercaps */
+ if (filtered_intersection) {
+ GstPadLinkReturn link_res;
+
+ link_res = gst_pad_try_set_caps_func (realsrc, filtered_intersection, TRUE);
+ if (link_res == GST_PAD_LINK_REFUSED)
+ goto error;
+ if (link_res == GST_PAD_LINK_DONE)
+ goto success;
+
+ link_res = gst_pad_try_set_caps_func (realsink, filtered_intersection, TRUE);
+ if (link_res == GST_PAD_LINK_REFUSED)
+ goto error;
+ if (link_res == GST_PAD_LINK_DONE)
+ goto success;
+ }
+ /* no filtered_intersection, some pads had caps and ther was a filter */
+ else if ((srccaps || sinkcaps) && filter) {
+ goto error;
+ }
- /* no negotiation is performed it the pads have filtercaps */
- if (intersection) {
- GstPadConnectReturn res;
-
- res = gst_pad_try_set_caps_func (realsrc, intersection, TRUE);
- if (res == GST_PAD_CONNECT_REFUSED)
- return FALSE;
- if (res == GST_PAD_CONNECT_DONE)
- return TRUE;
+success:
+cleanup:
+ gst_caps_sink (srccaps);
+ gst_caps_sink (sinkcaps);
+ gst_caps_unref (filtered_intersection);
+ return res;
- res = gst_pad_try_set_caps_func (realsink, intersection, TRUE);
- if (res == GST_PAD_CONNECT_REFUSED)
- return FALSE;
- if (res == GST_PAD_CONNECT_DONE)
- return TRUE;
- }
- return TRUE;
+error:
+ res = FALSE;
+ goto cleanup;
}
/**
- * gst_pad_try_reconnect_filtered:
- * @pad: the pad to reconnect
- * @caps: the capabilities to use in the reconnectiong
+ * gst_pad_try_relink_filtered:
+ * @srcpad: the source #GstPad to relink.
+ * @sinkpad: the sink #GstPad to relink.
+ * @filtercaps: the #GstPad to use as a filter in the relink.
*
- * Try to reconnect this pad and its peer with the specified caps
+ * Tries to relink the given source and sink pad, constrained by the given
+ * capabilities.
*
- * Returns: a boolean indicating the peer pad could accept the caps.
+ * Returns: TRUE if the pads were succesfully renegotiated, FALSE otherwise.
*/
gboolean
-gst_pad_try_reconnect_filtered (GstPad *srcpad, GstPad *sinkpad, GstCaps *filtercaps)
+gst_pad_try_relink_filtered (GstPad *srcpad, GstPad *sinkpad,
+ GstCaps *filtercaps)
{
GstRealPad *realsrc, *realsink;
g_return_val_if_fail (GST_RPAD_PEER (realsrc) != NULL, FALSE);
g_return_val_if_fail (GST_RPAD_PEER (realsink) == realsrc, FALSE);
- return gst_pad_try_reconnect_filtered_func (realsrc, realsink, filtercaps, TRUE);
+ return gst_pad_try_relink_filtered_func (realsrc, realsink,
+ filtercaps, TRUE);
}
/**
- * gst_pad_reconnect_filtered:
- * @pad: the pad to reconnect
- * @caps: the capabilities to use in the reconnectiong
+ * gst_pad_relink_filtered:
+ * @srcpad: the source #GstPad to relink.
+ * @sinkpad: the sink #GstPad to relink.
+ * @filtercaps: the #GstPad to use as a filter in the relink.
*
- * Try to reconnect this pad and its peer with the specified caps.
+ * Relinks the given source and sink pad, constrained by the given
+ * capabilities. If the relink fails, the pads are unlinked
+ * and FALSE is returned.
*
- * Returns: a boolean indicating the peer pad could accept the caps.
- * if FALSE is returned, the pads are disconnected.
+ * Returns: TRUE if the pads were succesfully relinked, FALSE otherwise.
*/
gboolean
-gst_pad_reconnect_filtered (GstPad *srcpad, GstPad *sinkpad, GstCaps *filtercaps)
+gst_pad_relink_filtered (GstPad *srcpad, GstPad *sinkpad,
+ GstCaps *filtercaps)
{
GstRealPad *realsrc, *realsink;
g_return_val_if_fail (GST_RPAD_PEER (realsrc) != NULL, FALSE);
g_return_val_if_fail (GST_RPAD_PEER (realsink) == realsrc, FALSE);
- if (!gst_pad_try_reconnect_filtered_func (realsrc, realsink, filtercaps, TRUE)) {
- gst_pad_disconnect (srcpad, GST_PAD (GST_PAD_PEER (srcpad)));
+ if (!gst_pad_try_relink_filtered_func (realsrc, realsink,
+ filtercaps, TRUE))
+ {
+ gst_pad_unlink (srcpad, GST_PAD (GST_PAD_PEER (srcpad)));
return FALSE;
}
return TRUE;
}
/**
- * gst_pad_proxy_connect:
- * @pad: the pad to proxy to
- * @caps: the capabilities to use in the proxying
+ * gst_pad_proxy_link:
+ * @pad: a #GstPad to proxy to.
+ * @caps: the #GstCaps to use in proxying.
*
- * Proxy the connect function to the specified pad.
+ * Proxies the link function to the specified pad.
*
- * Returns: a boolean indicating the peer pad could accept the caps.
+ * Returns: TRUE if the peer pad accepted the caps, FALSE otherwise.
*/
-GstPadConnectReturn
-gst_pad_proxy_connect (GstPad *pad, GstCaps *caps)
+GstPadLinkReturn
+gst_pad_proxy_link (GstPad *pad, GstCaps *caps)
{
GstRealPad *peer, *realpad;
peer = GST_RPAD_PEER (realpad);
- GST_INFO (GST_CAT_CAPS, "proxy connect to pad %s:%s",
+ GST_CAT_INFO (GST_CAT_CAPS, "proxy link to pad %s:%s",
GST_DEBUG_PAD_NAME (realpad));
- if (peer && !gst_pad_try_set_caps_func (peer, caps, TRUE))
- return GST_PAD_CONNECT_REFUSED;
- if (!gst_pad_try_set_caps_func (realpad, caps, FALSE))
- return GST_PAD_CONNECT_REFUSED;
+ if (peer && gst_pad_try_set_caps_func (peer, caps, TRUE) < 0)
+ return GST_PAD_LINK_REFUSED;
+ if (gst_pad_try_set_caps_func (realpad, caps, FALSE) < 0)
+ return GST_PAD_LINK_REFUSED;
+
+ if (peer) {
+ gst_caps_debug (caps, "proxy link filter");
- return GST_PAD_CONNECT_OK;
+ GST_CAT_INFO (GST_CAT_CAPS, "setting filter on %s:%s and %s:%s",
+ GST_DEBUG_PAD_NAME (peer), GST_DEBUG_PAD_NAME (realpad));
+
+ gst_caps_replace_sink (&GST_RPAD_FILTER (peer), caps);
+ gst_caps_replace_sink (&GST_RPAD_FILTER (realpad), caps);
+ }
+
+ return GST_PAD_LINK_OK;
}
/**
* gst_pad_get_caps:
- * @pad: the pad to get the capabilities from
+ * @pad: a #GstPad to get the capabilities of.
*
- * Get the capabilities of this pad.
+ * Gets the capabilities of this pad.
*
- * Returns: the capabilities of this pad
+ * Returns: the #GstCaps of this pad. This function potentially
+ * returns a floating caps, so use gst_caps_sink to get rid of
+ * it.
*/
GstCaps*
gst_pad_get_caps (GstPad *pad)
realpad = GST_PAD_REALIZE (pad);
- GST_DEBUG (GST_CAT_CAPS, "get pad caps of %s:%s (%p)\n",
+ GST_CAT_DEBUG (GST_CAT_CAPS, "get pad caps of %s:%s (%p)",
GST_DEBUG_PAD_NAME (realpad), realpad);
+ /* note that we will not _ref the caps here as this function might be
+ * called recursively */
if (GST_PAD_CAPS (realpad)) {
- GST_DEBUG (GST_CAT_CAPS, "using pad real caps\n");
+ GST_CAT_DEBUG (GST_CAT_CAPS, "using pad real caps %p", GST_PAD_CAPS (realpad));
return GST_PAD_CAPS (realpad);
}
else if GST_RPAD_GETCAPSFUNC (realpad) {
- GST_DEBUG (GST_CAT_CAPS, "using pad get function\n");
- return GST_RPAD_GETCAPSFUNC (realpad) (GST_PAD_CAST (realpad), NULL);
+ GstCaps *caps;
+
+ GST_CAT_DEBUG (GST_CAT_CAPS, "using pad get function");
+ caps = GST_RPAD_GETCAPSFUNC (realpad) (GST_PAD_CAST (realpad), NULL);
+ if(caps)g_return_val_if_fail(caps->refcount > 0, NULL);
+
+ return caps;
}
- else if (GST_PAD_PADTEMPLATE (realpad)) {
- GST_DEBUG (GST_CAT_CAPS, "using pad template\n");
- return GST_PADTEMPLATE_CAPS (GST_PAD_PADTEMPLATE (realpad));
+ else if (GST_PAD_PAD_TEMPLATE (realpad)) {
+ GstPadTemplate *templ = GST_PAD_PAD_TEMPLATE (realpad);
+ GST_CAT_DEBUG (GST_CAT_CAPS, "using pad template %p with caps %p",
+ templ, GST_PAD_TEMPLATE_CAPS (templ));
+ return GST_PAD_TEMPLATE_CAPS (templ);
}
- GST_DEBUG (GST_CAT_CAPS, "pad has no caps\n");
+ GST_CAT_DEBUG (GST_CAT_CAPS, "pad has no caps");
return NULL;
}
/**
- * gst_pad_get_padtemplate_caps:
- * @pad: the pad to get the capabilities from
+ * gst_pad_get_pad_template_caps:
+ * @pad: a #GstPad to get the template capabilities from.
*
- * Get the capabilities of this pad.
+ * Gets the template capabilities of this pad.
*
- * Returns: a list of the capabilities of this pad
+ * Returns: the template #GstCaps of this pad, unref the caps
+ * if you no longer need it.
*/
GstCaps*
-gst_pad_get_padtemplate_caps (GstPad *pad)
+gst_pad_get_pad_template_caps (GstPad *pad)
{
g_return_val_if_fail (pad != NULL, NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
- if (GST_PAD_PADTEMPLATE (pad))
- return GST_PADTEMPLATE_CAPS (GST_PAD_PADTEMPLATE (pad));
+ if (GST_PAD_PAD_TEMPLATE (pad))
+ return gst_caps_ref (GST_PAD_TEMPLATE_CAPS (GST_PAD_PAD_TEMPLATE (pad)));
return NULL;
}
-
/**
- * gst_padtemplate_get_caps_by_name:
- * @templ: the padtemplate to get the capabilities from
- * @name: the name of the capability to get
+ * gst_pad_template_get_caps_by_name:
+ * @templ: a #GstPadTemplate to get the capabilities of.
+ * @name: the name of the capability to get.
*
- * Get the capability with the given name from this padtemplate.
+ * Gets the capability with the given name from this pad template.
*
- * Returns: a capability or NULL if not found
+ * Returns: the #GstCaps, or NULL if not found or in case of an error. unref
+ * the caps if you no longer need it.
*/
GstCaps*
-gst_padtemplate_get_caps_by_name (GstPadTemplate *templ, const gchar *name)
+gst_pad_template_get_caps_by_name (GstPadTemplate *templ, const gchar *name)
{
GstCaps *caps;
g_return_val_if_fail (templ != NULL, NULL);
- caps = GST_PADTEMPLATE_CAPS (templ);
+ caps = GST_PAD_TEMPLATE_CAPS (templ);
if (!caps)
return NULL;
- return gst_caps_get_by_name (caps, name);
+ return gst_caps_ref (gst_caps_get_by_name (caps, name));
}
/**
* gst_pad_check_compatibility:
- * @srcpad: the srcpad to check
- * @sinkpad: the sinkpad to check against
+ * @srcpad: the source #GstPad to check.
+ * @sinkpad: the sink #GstPad to check against.
*
- * Check if two pads have compatible capabilities.
+ * Checks if two pads have compatible capabilities.
*
- * Returns: TRUE if they are compatible or the capabilities
+ * Returns: TRUE if they are compatible or if the capabilities
* could not be checked
*/
gboolean
g_return_val_if_fail (GST_IS_PAD (sinkpad), FALSE);
if (GST_PAD_CAPS (srcpad) && GST_PAD_CAPS (sinkpad)) {
- if (!gst_caps_check_compatibility (GST_PAD_CAPS (srcpad), GST_PAD_CAPS (sinkpad))) {
+ if (!gst_caps_is_always_compatible (GST_PAD_CAPS (srcpad),
+ GST_PAD_CAPS (sinkpad))) {
return FALSE;
}
else {
}
}
else {
- GST_DEBUG (GST_CAT_PADS, "could not check capabilities of pads (%s:%s) and (%s:%s) %p %p\n",
- GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad),
- GST_PAD_CAPS (srcpad), GST_PAD_CAPS (sinkpad));
+ GST_CAT_DEBUG (GST_CAT_PADS,
+ "could not check capabilities of pads (%s:%s) and (%s:%s) %p %p",
+ GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad),
+ GST_PAD_CAPS (srcpad), GST_PAD_CAPS (sinkpad));
return TRUE;
}
}
/**
* gst_pad_get_peer:
- * @pad: the pad to get the peer from
+ * @pad: a #GstPad to get the peer of.
*
- * Get the peer pad of this pad.
+ * Gets the peer pad of this pad.
*
- * Returns: the peer pad
+ * Returns: the peer #GstPad.
*/
GstPad*
gst_pad_get_peer (GstPad *pad)
/**
* gst_pad_get_allowed_caps:
- * @pad: the pad to get the allowed caps from
+ * @pad: a #GstPad to get the allowed caps of.
*
- * Gst the caps of the allowed media types that can
- * go through this pad.
+ * Gets the capabilities of the allowed media types that can
+ * flow through this pad. The caller must free the resulting caps.
*
- * Returns: the allowed caps
+ * Returns: the allowed #GstCaps of the pad link. unref the caps if
+ * you no longer need it.
*/
GstCaps*
gst_pad_get_allowed_caps (GstPad *pad)
{
+ GstCaps *caps;
+ GstRealPad *realpad;
+
g_return_val_if_fail (pad != NULL, NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
- GST_DEBUG (GST_CAT_PROPERTIES, "get allowed caps of %s:%s\n", GST_DEBUG_PAD_NAME (pad));
+ realpad = GST_PAD_REALIZE (pad);
+
+ GST_CAT_DEBUG (GST_CAT_PROPERTIES, "get allowed caps of %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+
+ caps = gst_caps_ref (GST_RPAD_FILTER (realpad));
- return gst_caps_copy (GST_RPAD_FILTER (pad));
+ return caps;
}
/**
- * gst_pad_get_allowed_caps:
- * @pad: the pad to get the allowed caps from
+ * gst_pad_recalc_allowed_caps:
+ * @pad: a #GstPad to recalculate the capablities of.
*
- * Gst the caps of the allowed media types that can
- * go through this pad.
+ * Attempts to relink the pad to its peer through its filter,
+ * set with gst_pad_[re]link_filtered. This function is useful when a
+ * plug-in has new capabilities on a pad and wants to notify the peer.
*
- * Returns: the allowed caps
+ * Returns: TRUE on success, FALSE otherwise.
*/
gboolean
gst_pad_recalc_allowed_caps (GstPad *pad)
g_return_val_if_fail (pad != NULL, FALSE);
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
- GST_DEBUG (GST_CAT_PROPERTIES, "set allowed caps of %s:%s\n", GST_DEBUG_PAD_NAME (pad));
+ GST_CAT_DEBUG (GST_CAT_PROPERTIES, "set allowed caps of %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+
peer = GST_RPAD_PEER (pad);
if (peer)
- return gst_pad_try_reconnect_filtered (pad, GST_PAD (peer), GST_RPAD_APPFILTER (pad));
+ return gst_pad_try_relink_filtered (pad, GST_PAD (peer),
+ GST_RPAD_APPFILTER (pad));
return TRUE;
}
/**
+ * gst_pad_recover_caps_error:
+ * @pad: a #GstPad that had a failed capsnego
+ * @allowed: possible caps for the link
+ *
+ * Attempt to recover from a failed caps negotiation. This function
+ * is typically called by a plugin that exhausted its list of caps
+ * and wants the application to resolve the issue. The application
+ * should connect to the pad's caps_nego_failed signal and should
+ * resolve the issue by connecting another element for example.
+ *
+ * Returns: TRUE when the issue was resolved, dumps detailed information
+ * on the console and returns FALSE otherwise.
+ */
+gboolean
+gst_pad_recover_caps_error (GstPad *pad, GstCaps *allowed)
+{
+ GstElement *parent;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+
+ /* see if someone can resolve this */
+ if (g_signal_has_handler_pending (G_OBJECT (pad),
+ gst_real_pad_signals[REAL_CAPS_NEGO_FAILED], 0, FALSE))
+ {
+ /* clear pad caps first */
+ gst_caps_replace (&GST_PAD_CAPS (pad), NULL);
+
+ /* lets hope some signal manages to set the caps again */
+ g_signal_emit (G_OBJECT (pad), gst_real_pad_signals[REAL_CAPS_NEGO_FAILED], 0, allowed);
+
+ /* if the pad has caps now or is disabled, it's ok */
+ if (GST_PAD_CAPS (pad) != NULL || !GST_PAD_IS_ACTIVE (pad))
+ return TRUE;
+ }
+
+ /* report error */
+ parent = gst_pad_get_parent (pad);
+ gst_element_error (parent, "negotiation failed on pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+
+ return FALSE;
+}
+
+/**
* gst_pad_get_bufferpool:
- * @pad: the pad to get the bufferpool from
+ * @pad: a #GstPad to get the bufferpool from.
*
- * Get the bufferpool of the peer pad of the given
- * pad
+ * Gets the bufferpool of the peer pad of the given pad.Note that
+ * a bufferpool can only be obtained from a srcpad.
*
- * Returns: The GstBufferPool or NULL.
+ * Returns: the #GstBufferPool, or NULL in case of an error.
*/
GstBufferPool*
gst_pad_get_bufferpool (GstPad *pad)
g_return_val_if_fail (pad != NULL, NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
+ g_return_val_if_fail (GST_PAD_IS_SRC (pad), NULL);
peer = GST_RPAD_PEER (pad);
if (!peer)
return NULL;
- GST_DEBUG_ENTER ("(%s:%s)", GST_DEBUG_PAD_NAME (pad));
+ GST_CAT_DEBUG (GST_CAT_BUFFER, "(%s:%s): getting bufferpool", GST_DEBUG_PAD_NAME (pad));
if (peer->bufferpoolfunc) {
- GST_DEBUG (GST_CAT_PADS, "calling bufferpoolfunc &%s (@%p) of peer pad %s:%s\n",
- GST_DEBUG_FUNCPTR_NAME (peer->bufferpoolfunc), &peer->bufferpoolfunc, GST_DEBUG_PAD_NAME (((GstPad*) peer)));
+ GST_CAT_DEBUG (GST_CAT_PADS,
+ "calling bufferpoolfunc &%s (@%p) of peer pad %s:%s",
+ GST_DEBUG_FUNCPTR_NAME (peer->bufferpoolfunc),
+ &peer->bufferpoolfunc, GST_DEBUG_PAD_NAME (((GstPad*) peer)));
return (peer->bufferpoolfunc) (((GstPad*) peer));
} else {
- GST_DEBUG (GST_CAT_PADS, "no bufferpoolfunc for peer pad %s:%s at %p\n",
- GST_DEBUG_PAD_NAME (((GstPad*) peer)), &peer->bufferpoolfunc);
+ GST_CAT_DEBUG (GST_CAT_PADS, "no bufferpoolfunc for peer pad %s:%s at %p",
+ GST_DEBUG_PAD_NAME (((GstPad*) peer)), &peer->bufferpoolfunc);
return NULL;
}
}
{
GstPad *pad = GST_PAD (object);
- /* No connected pad can ever be disposed.
- * It has to have a parent to be connected and a parent would hold a reference */
+ /* No linked pad can ever be disposed.
+ * It has to have a parent to be linked
+ * and a parent would hold a reference */
g_assert (GST_PAD_PEER (pad) == NULL);
- GST_DEBUG (GST_CAT_REFCOUNTING, "dispose %s:%s\n", GST_DEBUG_PAD_NAME(pad));
+ GST_CAT_DEBUG (GST_CAT_REFCOUNTING, "dispose %s:%s", GST_DEBUG_PAD_NAME(pad));
- if (GST_PAD_PADTEMPLATE (pad)){
- GST_DEBUG (GST_CAT_REFCOUNTING, "unreffing padtemplate'%s'\n", GST_OBJECT_NAME (GST_PAD_PADTEMPLATE (pad)));
- gst_object_unref (GST_OBJECT (GST_PAD_PADTEMPLATE (pad)));
- GST_PAD_PADTEMPLATE (pad) = NULL;
- }
-
- /* we destroy the ghostpads, because they are nothing without the real pad */
+ /* we destroy the ghostpads, because they are nothing without the real pad */
if (GST_REAL_PAD (pad)->ghostpads) {
GList *orig, *ghostpads;
GstPad *ghostpad = GST_PAD (ghostpads->data);
if (GST_IS_ELEMENT (GST_OBJECT_PARENT (ghostpad))){
- GST_DEBUG (GST_CAT_REFCOUNTING, "removing ghost pad from element '%s'\n",
- GST_OBJECT_NAME (GST_OBJECT_PARENT (ghostpad)));
+ GST_CAT_DEBUG (GST_CAT_REFCOUNTING, "removing ghost pad from element '%s'",
+ GST_OBJECT_NAME (GST_OBJECT_PARENT (ghostpad)));
gst_element_remove_ghost_pad (GST_ELEMENT (GST_OBJECT_PARENT (ghostpad)), GST_PAD (ghostpad));
}
g_list_free (GST_REAL_PAD(pad)->ghostpads);
}
- if (GST_IS_ELEMENT (GST_OBJECT_PARENT (pad))){
- GST_DEBUG (GST_CAT_REFCOUNTING, "removing pad from element '%s'\n",
- GST_OBJECT_NAME (GST_OBJECT (GST_ELEMENT (GST_OBJECT_PARENT (pad)))));
+ gst_caps_replace (&GST_PAD_CAPS (pad), NULL);
+ gst_caps_replace (&GST_RPAD_APPFILTER (pad), NULL);
+
+ if (GST_IS_ELEMENT (GST_OBJECT_PARENT (pad))) {
+ GST_CAT_DEBUG (GST_CAT_REFCOUNTING, "removing pad from element '%s'",
+ GST_OBJECT_NAME (GST_OBJECT (GST_ELEMENT (GST_OBJECT_PARENT (pad)))));
gst_element_remove_pad (GST_ELEMENT (GST_OBJECT_PARENT (pad)), pad);
}
#ifndef GST_DISABLE_LOADSAVE
+/* FIXME: why isn't this on a GstElement ? */
/**
- * gst_pad_load_and_connect:
- * @self: the XML node to read the description from
- * @parent: the element that has the pad
+ * gst_pad_load_and_link:
+ * @self: an #xmlNodePtr to read the description from.
+ * @parent: the #GstObject element that owns the pad.
*
- * Read the pad definition from the XML node and connect the given pad
- * in element to a pad of an element up in the hierarchy.
+ * Reads the pad definition from the XML node and links the given pad
+ * in the element to a pad of an element up in the hierarchy.
*/
void
-gst_pad_load_and_connect (xmlNodePtr self,
- GstObject *parent)
+gst_pad_load_and_link (xmlNodePtr self, GstObject *parent)
{
xmlNodePtr field = self->xmlChildrenNode;
GstPad *pad = NULL, *targetpad;
- guchar *peer = NULL;
+ gchar *peer = NULL;
gchar **split;
GstElement *target;
GstObject *grandparent;
while (field) {
if (!strcmp (field->name, "name")) {
- pad = gst_element_get_pad (GST_ELEMENT (parent), xmlNodeGetContent (field));
+ pad = gst_element_get_pad (GST_ELEMENT (parent),
+ xmlNodeGetContent (field));
}
else if (!strcmp(field->name, "peer")) {
peer = xmlNodeGetContent (field);
split = g_strsplit (peer, ".", 2);
+ if (split[0] == NULL || split[1] == NULL) {
+ GST_CAT_DEBUG (GST_CAT_XML,
+ "Could not parse peer '%s' for pad %s:%s, leaving unlinked",
+ peer, GST_DEBUG_PAD_NAME (pad));
+ return;
+ }
+
g_return_if_fail (split[0] != NULL);
g_return_if_fail (split[1] != NULL);
if (targetpad == NULL) goto cleanup;
- gst_pad_connect (pad, targetpad);
+ gst_pad_link (pad, targetpad);
cleanup:
g_strfreev (split);
/**
* gst_pad_save_thyself:
- * @pad: the pad to save
- * @parent: the parent XML node to save the description in
+ * @pad: a #GstPad to save.
+ * @parent: the parent #xmlNodePtr to save the description in.
*
- * Saves the pad into an xml representation
+ * Saves the pad into an xml representation.
*
- * Returns: the xml representation of the pad
+ * Returns: the #xmlNodePtr representation of the pad.
*/
static xmlNodePtr
-gst_pad_save_thyself (GstObject *object,
- xmlNodePtr parent)
+gst_pad_save_thyself (GstObject *object, xmlNodePtr parent)
{
GstRealPad *realpad;
GstPad *peer;
g_return_val_if_fail (GST_IS_REAL_PAD (object), NULL);
- realpad = GST_REAL_PAD(object);
+ realpad = GST_REAL_PAD (object);
- xmlNewChild(parent,NULL,"name", GST_PAD_NAME (realpad));
- if (GST_RPAD_PEER(realpad) != NULL) {
- peer = GST_PAD(GST_RPAD_PEER(realpad));
+ xmlNewChild (parent, NULL, "name", GST_PAD_NAME (realpad));
+ if (GST_RPAD_PEER (realpad) != NULL) {
+ gchar *content;
+
+ peer = GST_PAD (GST_RPAD_PEER (realpad));
/* first check to see if the peer's parent's parent is the same */
/* we just save it off */
- xmlNewChild(parent,NULL,"peer",g_strdup_printf("%s.%s",
- GST_OBJECT_NAME (GST_PAD_PARENT (peer)), GST_PAD_NAME (peer)));
+ content = g_strdup_printf ("%s.%s",
+ GST_OBJECT_NAME (GST_PAD_PARENT (peer)),
+ GST_PAD_NAME (peer));
+ xmlNewChild (parent, NULL, "peer", content);
+ g_free (content);
} else
- xmlNewChild(parent,NULL,"peer","");
+ xmlNewChild (parent, NULL, "peer", "");
return parent;
}
+/* FIXME: shouldn't pad and ghost be switched ?
+ */
/**
- * gst_pad_ghost_save_thyself:
- * @pad: the pad to save
- * @bin: the bin
- * @parent: the parent XML node to save the description in
+ * gst_ghost_pad_save_thyself:
+ * @pad: a ghost #GstPad to save.
+ * @parent: the parent #xmlNodePtr to save the description in.
*
* Saves the ghost pad into an xml representation.
*
- * Returns: the xml representation of the pad
+ * Returns: the #xmlNodePtr representation of the pad.
*/
xmlNodePtr
-gst_pad_ghost_save_thyself (GstPad *pad,
- GstElement *bin,
- xmlNodePtr parent)
+gst_ghost_pad_save_thyself (GstPad *pad, xmlNodePtr parent)
{
xmlNodePtr self;
}
#endif /* GST_DISABLE_LOADSAVE */
-#ifndef gst_pad_push
/**
* gst_pad_push:
- * @pad: the pad to push
- * @buf: the buffer to push
+ * @pad: a #GstPad to push the buffer out of.
+ * @buf: the #GstBuffer to push.
*
- * Push a buffer to the peer of the pad.
+ * Pushes a buffer to the peer of the pad.
*/
void
gst_pad_push (GstPad *pad, GstBuffer *buf)
{
- GstRealPad *peer = GST_RPAD_PEER (pad);
+ GstRealPad *peer;
+ GstData *data = GST_DATA(buf);
- GST_DEBUG_ENTER ("(%s:%s)", GST_DEBUG_PAD_NAME (pad));
+ g_assert (GST_IS_PAD (pad));
+ GST_CAT_LOG_OBJECT (GST_CAT_DATAFLOW, pad, "pushing");
g_return_if_fail (GST_PAD_DIRECTION (pad) == GST_PAD_SRC);
+ if (!gst_probe_dispatcher_dispatch (&(GST_REAL_PAD (pad)->probedisp), &data))
+ return;
+
+ peer = GST_RPAD_PEER (pad);
+
if (!peer) {
- g_warning ("push on pad %s:%s but it is unconnected", GST_DEBUG_PAD_NAME (pad));
+ g_warning ("push on pad %s:%s but it is unlinked",
+ GST_DEBUG_PAD_NAME (pad));
}
else {
+ if (!GST_IS_EVENT (data) && !GST_PAD_IS_ACTIVE (peer)) {
+ g_warning ("push on peer of pad %s:%s but peer is not active",
+ GST_DEBUG_PAD_NAME (pad));
+ return;
+ }
+
if (peer->chainhandler) {
- if (buf) {
- GST_DEBUG (GST_CAT_DATAFLOW, "calling chainhandler &%s of peer pad %s:%s\n",
- GST_DEBUG_FUNCPTR_NAME (peer->chainhandler), GST_DEBUG_PAD_NAME (GST_PAD (peer)));
- (peer->chainhandler) (GST_PAD_CAST (peer), buf);
+ if (data) {
+ GST_CAT_LOG_OBJECT (GST_CAT_DATAFLOW, pad,
+ "calling chainhandler &%s of peer pad %s:%s",
+ GST_DEBUG_FUNCPTR_NAME (peer->chainhandler),
+ GST_DEBUG_PAD_NAME (GST_PAD (peer)));
+ if (!gst_probe_dispatcher_dispatch (&peer->probedisp, &data))
+ return;
+
+ (peer->chainhandler) (GST_PAD_CAST (peer), (GstBuffer *)data);
return;
}
else {
- g_warning ("trying to push a NULL buffer on pad %s:%s", GST_DEBUG_PAD_NAME (peer));
+ g_warning ("trying to push a NULL buffer on pad %s:%s",
+ GST_DEBUG_PAD_NAME (peer));
return;
}
}
else {
- g_warning ("(internal error) push on pad %s:%s but it has no chainhandler", GST_DEBUG_PAD_NAME (peer));
+ g_warning ("internal error: push on pad %s:%s but it has no chainhandler",
+ GST_DEBUG_PAD_NAME (peer));
}
}
/* clean up the mess here */
- if (buf != NULL) {
- if (GST_IS_BUFFER (buf))
- gst_buffer_unref (buf);
- else
- gst_event_free (GST_EVENT (buf));
- }
+ if (data != NULL) gst_data_unref (data);
}
-#endif
-#ifndef gst_pad_pull
/**
* gst_pad_pull:
- * @pad: the pad to pull
+ * @pad: a #GstPad to pull a buffer from.
*
- * Pull a buffer from the peer pad.
+ * Pulls a buffer from the peer pad.
*
- * Returns: a new buffer from the peer pad.
+ * Returns: a new #GstBuffer from the peer pad.
*/
GstBuffer*
gst_pad_pull (GstPad *pad)
{
- GstRealPad *peer = GST_RPAD_PEER(pad);
+ GstRealPad *peer;
- GST_DEBUG_ENTER("(%s:%s)",GST_DEBUG_PAD_NAME(pad));
+ GST_CAT_LOG_OBJECT (GST_CAT_DATAFLOW, pad, "pulling");
+
+ g_return_val_if_fail (GST_PAD_DIRECTION (pad) == GST_PAD_SINK,
+ GST_BUFFER (gst_event_new (GST_EVENT_INTERRUPT)));
- g_return_val_if_fail (GST_PAD_DIRECTION (pad) == GST_PAD_SINK, NULL);
+ peer = GST_RPAD_PEER (pad);
if (!peer) {
gst_element_error (GST_PAD_PARENT (pad),
- "pull on pad %s:%s but it was unconnected",
- GST_ELEMENT_NAME (GST_PAD_PARENT (pad)), GST_PAD_NAME (pad),
- NULL);
+ "pull on pad %s:%s but it was unlinked",
+ GST_ELEMENT_NAME (GST_PAD_PARENT (pad)),
+ GST_PAD_NAME (pad), NULL);
}
else {
+restart:
if (peer->gethandler) {
- GstBuffer *buf;
+ GstData *data;
+
+ GST_CAT_LOG_OBJECT (GST_CAT_DATAFLOW, pad,
+ "calling gethandler %s of peer pad %s:%s",
+ GST_DEBUG_FUNCPTR_NAME (peer->gethandler),
+ GST_DEBUG_PAD_NAME (peer));
- GST_DEBUG (GST_CAT_DATAFLOW, "calling gethandler %s of peer pad %s:%s\n",
- GST_DEBUG_FUNCPTR_NAME (peer->gethandler), GST_DEBUG_PAD_NAME (peer));
+ data = GST_DATA((peer->gethandler) (GST_PAD_CAST (peer)));
+
+ if (data) {
+ if (!gst_probe_dispatcher_dispatch (&peer->probedisp, &data))
+ goto restart;
+ return GST_BUFFER(data);
+ }
- buf = (peer->gethandler) (GST_PAD_CAST (peer));
- if (buf)
- return buf;
/* no null buffers allowed */
gst_element_error (GST_PAD_PARENT (pad),
- "NULL buffer during pull on %s:%s", GST_DEBUG_PAD_NAME (pad), NULL);
+ "NULL buffer during pull on %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
} else {
gst_element_error (GST_PAD_PARENT (pad),
- "(internal error) pull on pad %s:%s but the peer pad %s:%s has no gethandler",
- GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (peer),
- NULL);
- }
- }
- return NULL;
-}
-#endif
-
-#ifndef gst_pad_pullregion
-/**
- * gst_pad_pullregion:
- * @pad: the pad to pull the region from
- * @type: the regiontype
- * @offset: the offset/start of the buffer to pull
- * @len: the length of the buffer to pull
- *
- * Pull a buffer region from the peer pad. The region to pull can be
- * specified with a offset/lenght pair or with a start/legnth time
- * indicator as specified by the type parameter.
- *
- * Returns: a new buffer from the peer pad with data in the specified
- * region.
- */
-GstBuffer*
-gst_pad_pullregion (GstPad *pad, GstRegionType type, guint64 offset, guint64 len)
-{
- GstRealPad *peer;
- GstBuffer *result = NULL;
-
- g_return_val_if_fail (GST_PAD_DIRECTION (pad) == GST_PAD_SINK, NULL);
-
- do {
- peer = GST_RPAD_PEER(pad);
- g_return_val_if_fail (peer != NULL, NULL);
-
- if (result)
- gst_buffer_unref (result);
-
- GST_DEBUG_ENTER("(%s:%s,%d,%lld,%lld)",GST_DEBUG_PAD_NAME(pad),type,offset,len);
-
- if (peer->pullregionfunc) {
- GST_DEBUG (GST_CAT_DATAFLOW, "calling pullregionfunc &%s of peer pad %s:%s\n",
- GST_DEBUG_FUNCPTR_NAME (peer->pullregionfunc), GST_DEBUG_PAD_NAME(GST_PAD_CAST (peer)));
- result = (peer->pullregionfunc) (GST_PAD_CAST (peer), type, offset, len);
- } else {
- GST_DEBUG (GST_CAT_DATAFLOW,"no pullregionfunc\n");
- result = NULL;
- break;
+ "internal error: pull on pad %s:%s "
+ "but the peer pad %s:%s has no gethandler",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (peer));
}
}
- /* FIXME */
- while (result && !(GST_BUFFER_OFFSET (result) == offset &&
- GST_BUFFER_SIZE (result) == len));
-
- return result;
-}
-#endif
-
-/**
- * gst_pad_peek:
- * @pad: the pad to peek
- *
- * Peek for a buffer from the peer pad.
- *
- * Returns: a from the peer pad or NULL if the peer has no buffer.
- */
-GstBuffer*
-gst_pad_peek (GstPad *pad)
-{
- g_return_val_if_fail (GST_PAD_DIRECTION (pad) == GST_PAD_SINK, NULL);
-
- return GST_RPAD_BUFPEN (GST_RPAD_PEER (pad));
+ return GST_BUFFER (gst_event_new (GST_EVENT_INTERRUPT));
}
/**
* gst_pad_select:
- * @padlist: A list of pads
+ * @padlist: a #GList of pads.
*
- * Wait for a buffer on the list of pads.
+ * Waits for a buffer on any of the list of pads.
*
- * Returns: The pad that has a buffer available, use
- * #gst_pad_pull to get the buffer.
+ * Returns: the #GstPad that has a buffer available.
+ * Use #gst_pad_pull() to get the buffer.
*/
GstPad*
gst_pad_select (GList *padlist)
{
GstPad *pad;
- pad = gst_scheduler_pad_select (GST_PAD_PARENT (padlist->data)->sched, padlist);
-
+ pad = gst_scheduler_pad_select (GST_PAD_PARENT (padlist->data)->sched,
+ padlist);
return pad;
}
/**
* gst_pad_selectv:
- * @pad: The first pad to perform the select on
- * @...: More pads
+ * @pad: a first #GstPad to perform the select on.
+ * @...: A NULL-terminated list of more pads to select on.
*
- * Wait for a buffer on the given of pads.
+ * Waits for a buffer on the given set of pads.
*
- * Returns: The pad that has a buffer available, use
- * #gst_pad_pull to get the buffer.
+ * Returns: the #GstPad that has a buffer available.
+ * Use #gst_pad_pull() to get the buffer.
*/
GstPad*
gst_pad_selectv (GstPad *pad, ...)
* templates
*
*/
-static void gst_padtemplate_class_init (GstPadTemplateClass *klass);
-static void gst_padtemplate_init (GstPadTemplate *templ);
-
-enum {
- TEMPL_PAD_CREATED,
- /* FILL ME */
- TEMPL_LAST_SIGNAL
-};
-
-static GstObject *padtemplate_parent_class = NULL;
-static guint gst_padtemplate_signals[TEMPL_LAST_SIGNAL] = { 0 };
+static void gst_pad_template_class_init (GstPadTemplateClass *klass);
+static void gst_pad_template_init (GstPadTemplate *templ);
+static void gst_pad_template_dispose (GObject *object);
GType
-gst_padtemplate_get_type (void)
+gst_pad_template_get_type (void)
{
static GType padtemplate_type = 0;
if (!padtemplate_type) {
static const GTypeInfo padtemplate_info = {
- sizeof(GstPadTemplateClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_padtemplate_class_init,
- NULL,
- NULL,
- sizeof(GstPadTemplate),
+ sizeof (GstPadTemplateClass), NULL, NULL,
+ (GClassInitFunc) gst_pad_template_class_init, NULL, NULL,
+ sizeof (GstPadTemplate),
32,
- (GInstanceInitFunc)gst_padtemplate_init,
- NULL
+ (GInstanceInitFunc) gst_pad_template_init, NULL
};
- padtemplate_type = g_type_register_static(GST_TYPE_OBJECT, "GstPadTemplate", &padtemplate_info, 0);
+ padtemplate_type = g_type_register_static(GST_TYPE_OBJECT, "GstPadTemplate",
+ &padtemplate_info, 0);
}
return padtemplate_type;
}
static void
-gst_padtemplate_class_init (GstPadTemplateClass *klass)
+gst_pad_template_class_init (GstPadTemplateClass *klass)
{
GObjectClass *gobject_class;
GstObjectClass *gstobject_class;
- gobject_class = (GObjectClass*)klass;
- gstobject_class = (GstObjectClass*)klass;
+ gobject_class = (GObjectClass*) klass;
+ gstobject_class = (GstObjectClass*) klass;
- padtemplate_parent_class = g_type_class_ref(GST_TYPE_OBJECT);
+ padtemplate_parent_class = g_type_class_ref (GST_TYPE_OBJECT);
- gst_padtemplate_signals[TEMPL_PAD_CREATED] =
- g_signal_new ("pad_created", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstPadTemplateClass, pad_created), NULL, NULL,
- gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
- G_TYPE_POINTER);
+ gst_pad_template_signals[TEMPL_PAD_CREATED] =
+ g_signal_new ("pad_created", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstPadTemplateClass, pad_created),
+ NULL, NULL, gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
+ gobject_class->dispose = gst_pad_template_dispose;
gstobject_class->path_string_separator = "*";
}
static void
-gst_padtemplate_init (GstPadTemplate *templ)
+gst_pad_template_init (GstPadTemplate *templ)
+{
+}
+
+static void
+gst_pad_template_dispose (GObject *object)
{
+ GstPadTemplate *templ = GST_PAD_TEMPLATE (object);
+
+ g_free (GST_PAD_TEMPLATE_NAME_TEMPLATE (templ));
+ gst_caps_unref (GST_PAD_TEMPLATE_CAPS (templ));
+
+ G_OBJECT_CLASS (padtemplate_parent_class)->dispose (object);
+}
+
+/* ALWAYS padtemplates cannot have conversion specifications, it doesn't make
+ * sense.
+ * SOMETIMES padtemplates can do whatever they want, they are provided by the
+ * element.
+ * REQUEST padtemplates can be reverse-parsed (the user asks for 'sink1', the
+ * 'sink%d' template is automatically selected), so we need to restrict their
+ * naming.
+ */
+static gboolean
+name_is_valid (const gchar *name, GstPadPresence presence)
+{
+ const gchar *str;
+
+ if (presence == GST_PAD_ALWAYS) {
+ if (strchr (name, '%')) {
+ g_warning ("invalid name template %s: conversion specifications are not"
+ " allowed for GST_PAD_ALWAYS padtemplates", name);
+ return FALSE;
+ }
+ } else if (presence == GST_PAD_REQUEST) {
+ if ((str = strchr (name, '%')) && strchr (str + 1, '%')) {
+ g_warning ("invalid name template %s: only one conversion specification"
+ " allowed in GST_PAD_REQUEST padtemplate", name);
+ return FALSE;
+ }
+ if (str && (*(str+1) != 's' && *(str+1) != 'd')) {
+ g_warning ("invalid name template %s: conversion specification must be of"
+ " type '%%d' or '%%s' for GST_PAD_REQUEST padtemplate", name);
+ return FALSE;
+ }
+ if (str && (*(str+2) != '\0')) {
+ g_warning ("invalid name template %s: conversion specification must"
+ " appear at the end of the GST_PAD_REQUEST padtemplate name",
+ name);
+ return FALSE;
+ }
+ }
+
+ return TRUE;
}
/**
- * gst_padtemplate_new:
- * @name_template: the name template
- * @direction: the direction for the template
- * @presence: the presence of the pad
- * @caps: a list of capabilities for the template
- * @...: more capabilities
+ * gst_pad_template_newv:
+ * @name_template: the name template.
+ * @direction: the #GstPadDirection of the template.
+ * @presence: the #GstPadPresence of the pad.
+ * @caps: a #GstCaps set for the template.
+ * @var_args: a NULL-terminated list of #GstCaps.
*
- * Creates a new padtemplate from the given arguments.
+ * Creates a new pad template with a name according to the given template
+ * and with the given arguments.
*
- * Returns: the new padtemplate
+ * Returns: a new #GstPadTemplate.
*/
GstPadTemplate*
-gst_padtemplate_new (gchar *name_template,
- GstPadDirection direction, GstPadPresence presence,
- GstCaps *caps, ...)
+gst_pad_template_newv (const gchar *name_template,
+ GstPadDirection direction, GstPadPresence presence,
+ GstCaps *caps, va_list var_args)
{
GstPadTemplate *new;
- va_list var_args;
GstCaps *thecaps = NULL;
g_return_val_if_fail (name_template != NULL, NULL);
- new = g_object_new(gst_padtemplate_get_type () ,NULL);
+ if (!name_is_valid (name_template, presence))
+ return NULL;
- GST_PADTEMPLATE_NAME_TEMPLATE (new) = name_template;
- GST_PADTEMPLATE_DIRECTION (new) = direction;
- GST_PADTEMPLATE_PRESENCE (new) = presence;
+ new = g_object_new (gst_pad_template_get_type (),
+ "name", name_template,
+ NULL);
- va_start (var_args, caps);
+ GST_PAD_TEMPLATE_NAME_TEMPLATE (new) = g_strdup (name_template);
+ GST_PAD_TEMPLATE_DIRECTION (new) = direction;
+ GST_PAD_TEMPLATE_PRESENCE (new) = presence;
+ GST_FLAG_SET (GST_OBJECT (new), GST_PAD_TEMPLATE_FIXED);
while (caps) {
- new->fixed &= caps->fixed;
+ if (!GST_CAPS_IS_FIXED (caps)) {
+ GST_FLAG_UNSET (GST_OBJECT (new), GST_PAD_TEMPLATE_FIXED);
+ }
thecaps = gst_caps_append (thecaps, caps);
caps = va_arg (var_args, GstCaps*);
}
- va_end (var_args);
- GST_PADTEMPLATE_CAPS (new) = thecaps;
+ GST_PAD_TEMPLATE_CAPS (new) = thecaps;
+ gst_caps_ref (thecaps);
+ gst_caps_sink (thecaps);
return new;
}
/**
- * gst_padtemplate_get_caps:
- * @templ: the padtemplate to use
- *
- * Get the capabilities of the padtemplate
- *
- * Returns: a GstCaps*
- */
-GstCaps*
-gst_padtemplate_get_caps (GstPadTemplate *templ)
-{
- g_return_val_if_fail (templ != NULL, NULL);
-
- return GST_PADTEMPLATE_CAPS (templ);
-}
-
-#ifndef GST_DISABLE_LOADSAVE
-/**
- * gst_padtemplate_save_thyself:
- * @templ: the padtemplate to save
- * @parent: the parent XML tree
+ * gst_pad_template_new:
+ * @name_template: the name template.
+ * @direction: the #GstPadDirection of the template.
+ * @presence: the #GstPadPresence of the pad.
+ * @caps: a #GstCaps set for the template.
+ * @...: a NULL-terminated list of #GstCaps.
*
- * Saves the padtemplate into XML.
+ * Creates a new pad template with a name according to the given template
+ * and with the given arguments.
*
- * Returns: the new XML tree
+ * Returns: a new #GstPadTemplate.
*/
-xmlNodePtr
-gst_padtemplate_save_thyself (GstPadTemplate *templ, xmlNodePtr parent)
+GstPadTemplate*
+gst_pad_template_new (const gchar *name_template,
+ GstPadDirection direction, GstPadPresence presence,
+ GstCaps *caps, ...)
{
- xmlNodePtr subtree;
- guchar *presence;
-
- GST_DEBUG (GST_CAT_XML,"saving padtemplate %s\n", templ->name_template);
+ GstPadTemplate *new;
+ va_list var_args;
- xmlNewChild(parent,NULL,"nametemplate", templ->name_template);
- xmlNewChild(parent,NULL,"direction", (templ->direction == GST_PAD_SINK? "sink":"src"));
+ va_start (var_args, caps);
- switch (templ->presence) {
- case GST_PAD_ALWAYS:
- presence = "always";
- break;
- case GST_PAD_SOMETIMES:
- presence = "sometimes";
- break;
- case GST_PAD_REQUEST:
- presence = "request";
- break;
- default:
- presence = "unknown";
- break;
- }
- xmlNewChild(parent,NULL,"presence", presence);
+ new = gst_pad_template_newv (name_template, direction, presence,
+ caps, var_args);
- if (GST_PADTEMPLATE_CAPS (templ)) {
- subtree = xmlNewChild (parent, NULL, "caps", NULL);
- gst_caps_save_thyself (GST_PADTEMPLATE_CAPS (templ), subtree);
- }
+ va_end (var_args);
- return parent;
+ return new;
}
/**
- * gst_padtemplate_load_thyself:
- * @parent: the source XML tree
+ * gst_pad_template_get_caps:
+ * @templ: a #GstPadTemplate to get capabilities of.
*
- * Loads a padtemplate from the XML tree.
+ * Gets the capabilities of the pad template.
*
- * Returns: the new padtemplate
+ * Returns: the #GstCaps of the pad template. unref the caps
+ * after use.
*/
-GstPadTemplate*
-gst_padtemplate_load_thyself (xmlNodePtr parent)
+GstCaps*
+gst_pad_template_get_caps (GstPadTemplate *templ)
{
- xmlNodePtr field = parent->xmlChildrenNode;
- GstPadTemplate *factory;
- gchar *name_template = NULL;
- GstPadDirection direction = GST_PAD_UNKNOWN;
- GstPadPresence presence = GST_PAD_ALWAYS;
- GstCaps *caps = NULL;
-
- while (field) {
- if (!strcmp(field->name, "nametemplate")) {
- name_template = xmlNodeGetContent(field);
- }
- if (!strcmp(field->name, "direction")) {
- gchar *value = xmlNodeGetContent(field);
-
- if (!strcmp(value, "sink")) {
- direction = GST_PAD_SINK;
- }
- else if (!strcmp(value, "src")) {
- direction = GST_PAD_SRC;
- }
- g_free (value);
- }
- if (!strcmp(field->name, "presence")) {
- gchar *value = xmlNodeGetContent(field);
-
- if (!strcmp(value, "always")) {
- presence = GST_PAD_ALWAYS;
- }
- else if (!strcmp(value, "sometimes")) {
- presence = GST_PAD_SOMETIMES;
- }
- else if (!strcmp(value, "request")) {
- presence = GST_PAD_REQUEST;
- }
- g_free (value);
- }
- else if (!strcmp(field->name, "caps")) {
- caps = gst_caps_load_thyself (field);
- }
- field = field->next;
- }
-
- factory = gst_padtemplate_new (name_template, direction, presence, caps, NULL);
+ g_return_val_if_fail (templ != NULL, NULL);
- return factory;
+ return gst_caps_ref (GST_PAD_TEMPLATE_CAPS (templ));
}
-#endif /* !GST_DISABLE_LOADSAVE */
-
/**
* gst_pad_set_element_private:
- * @pad: the pad to set the private data to
- * @priv: The private data to attach to the pad
+ * @pad: the #GstPad to set the private data of.
+ * @priv: The private data to attach to the pad.
*
- * Set the given private data pointer to the pad. This
- * function can only be used by the element that own the
- * pad.
+ * Set the given private data gpointer on the pad.
+ * This function can only be used by the element that owns the pad.
*/
void
gst_pad_set_element_private (GstPad *pad, gpointer priv)
/**
* gst_pad_get_element_private:
- * @pad: the pad to get the private data of
+ * @pad: the #GstPad to get the private data of.
*
- * Get the private data of a pad. The private data can
- * only be set by the parent element of this pad.
+ * Gets the private data of a pad.
*
- * Returns: a pointer to the private data.
+ * Returns: a #gpointer to the private data.
*/
gpointer
gst_pad_get_element_private (GstPad *pad)
/***** ghost pads *****/
GType _gst_ghost_pad_type = 0;
-static void gst_ghost_pad_class_init (GstGhostPadClass *klass);
-static void gst_ghost_pad_init (GstGhostPad *pad);
+static void gst_ghost_pad_class_init (GstGhostPadClass *klass);
+static void gst_ghost_pad_init (GstGhostPad *pad);
+static void gst_ghost_pad_dispose (GObject *object);
static GstPad *ghost_pad_parent_class = NULL;
/* static guint gst_ghost_pad_signals[LAST_SIGNAL] = { 0 }; */
GType
-gst_ghost_pad_get_type(void) {
+gst_ghost_pad_get_type (void)
+{
if (!_gst_ghost_pad_type) {
static const GTypeInfo pad_info = {
- sizeof(GstGhostPadClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_ghost_pad_class_init,
- NULL,
- NULL,
- sizeof(GstGhostPad),
+ sizeof (GstGhostPadClass), NULL, NULL,
+ (GClassInitFunc) gst_ghost_pad_class_init, NULL, NULL,
+ sizeof (GstGhostPad),
8,
- (GInstanceInitFunc)gst_ghost_pad_init,
+ (GInstanceInitFunc) gst_ghost_pad_init,
NULL
};
- _gst_ghost_pad_type = g_type_register_static(GST_TYPE_PAD, "GstGhostPad", &pad_info, 0);
+ _gst_ghost_pad_type = g_type_register_static (GST_TYPE_PAD, "GstGhostPad",
+ &pad_info, 0);
}
return _gst_ghost_pad_type;
}
{
GObjectClass *gobject_class;
- gobject_class = (GObjectClass*)klass;
+ gobject_class = (GObjectClass*) klass;
- ghost_pad_parent_class = g_type_class_ref(GST_TYPE_PAD);
+ ghost_pad_parent_class = g_type_class_ref (GST_TYPE_PAD);
+
+ gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_ghost_pad_dispose);
}
static void
gst_ghost_pad_init (GstGhostPad *pad)
{
- pad->realpad = NULL;
+ /* zeroed by glib */
+}
+static void
+gst_ghost_pad_dispose (GObject *object)
+{
+ GstGhostPad *pad = GST_GHOST_PAD (object);
+
+ if (pad->realpad)
+ gst_pad_remove_ghost_pad((GstPad *) pad->realpad, (GstPad *) pad);
+
+ G_OBJECT_CLASS (ghost_pad_parent_class)->dispose (object);
}
/**
* gst_ghost_pad_new:
- * @name: name of the new ghost pad
- * @pad: the pad to create a ghost pad of
+ * @name: the name of the new ghost pad.
+ * @pad: the #GstPad to create a ghost pad for.
*
- * Create a new ghost pad associated with the given pad.
+ * Creates a new ghost pad associated with the given pad, and names it with
+ * the given name. If name is NULL, a guaranteed unique name (across all
+ * ghost pads) will be assigned (most likely of the form ghostpad%d).
*
- * Returns: new ghost pad
+ * Returns: a new ghost #GstPad, or NULL in case of an error.
*/
+
GstPad*
-gst_ghost_pad_new (gchar *name,
+gst_ghost_pad_new (const gchar *name,
GstPad *pad)
{
GstGhostPad *ghostpad;
+ GstRealPad *realpad;
- g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (GST_IS_PAD (pad), NULL);
ghostpad = g_object_new (gst_ghost_pad_get_type () ,NULL);
gst_pad_set_name (GST_PAD (ghostpad), name);
- GST_GPAD_REALPAD (ghostpad) = GST_PAD_REALIZE (pad);
- GST_PAD_PADTEMPLATE (ghostpad) = GST_PAD_PADTEMPLATE (pad);
+
+ realpad = (GstRealPad *) pad;
+
+ while (!GST_IS_REAL_PAD (realpad)) {
+ realpad = GST_PAD_REALIZE (realpad);
+ }
+ GST_GPAD_REALPAD (ghostpad) = realpad;
+ gst_pad_set_pad_template (GST_PAD (ghostpad), GST_PAD_PAD_TEMPLATE (pad));
/* add ourselves to the real pad's list of ghostpads */
gst_pad_add_ghost_pad (pad, GST_PAD (ghostpad));
/* FIXME need to ref the real pad here... ? */
- GST_DEBUG (GST_CAT_PADS, "created ghost pad \"%s\"\n", name);
+ GST_CAT_DEBUG (GST_CAT_PADS, "created ghost pad \"%s\"",
+ gst_pad_get_name (GST_PAD (ghostpad)));
return GST_PAD (ghostpad);
}
-static void
-gst_pad_event_default_dispatch (GstPad *pad, GstElement *element, GstEvent *event)
+/**
+ * gst_pad_get_internal_links_default:
+ * @pad: the #GstPad to get the internal links of.
+ *
+ * Gets a list of pads to which the given pad is linked to
+ * inside of the parent element.
+ * This is the default handler, and thus returns a list of all of the
+ * pads inside the parent element with opposite direction.
+ * The caller must free this list after use.
+ *
+ * Returns: a newly allocated #GList of pads.
+ */
+GList*
+gst_pad_get_internal_links_default (GstPad *pad)
{
- GList *pads = element->pads;
+ GList *res = NULL;
+ GstElement *parent;
+ GList *parent_pads;
+ GstPadDirection direction;
+ GstRealPad *rpad;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+
+ rpad = GST_PAD_REALIZE (pad);
+ direction = rpad->direction;
+
+ parent = GST_PAD_PARENT (rpad);
+ parent_pads = parent->pads;
+
+ while (parent_pads) {
+ GstRealPad *parent_pad = GST_PAD_REALIZE (parent_pads->data);
+
+ if (parent_pad->direction != direction) {
+ res = g_list_prepend (res, parent_pad);
+ }
+
+ parent_pads = g_list_next (parent_pads);
+ }
+
+ return res;
+}
+
+/**
+ * gst_pad_get_internal_links:
+ * @pad: the #GstPad to get the internal links of.
+ *
+ * Gets a list of pads to which the given pad is linked to
+ * inside of the parent element.
+ * The caller must free this list after use.
+ *
+ * Returns: a newly allocated #GList of pads.
+ */
+GList*
+gst_pad_get_internal_links (GstPad *pad)
+{
+ GList *res = NULL;
+ GstRealPad *rpad;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), NULL);
+
+ rpad = GST_PAD_REALIZE (pad);
+
+ if (GST_RPAD_INTLINKFUNC (rpad))
+ res = GST_RPAD_INTLINKFUNC (rpad) (GST_PAD_CAST (rpad));
+
+ return res;
+}
+
+
+static gboolean
+gst_pad_event_default_dispatch (GstPad *pad, GstElement *element,
+ GstEvent *event)
+{
+ GList *orig, *pads;
+
+ orig = pads = gst_pad_get_internal_links (pad);
while (pads) {
GstPad *eventpad = GST_PAD (pads->data);
pads = g_list_next (pads);
- /* for all pads in the opposite direction that are connected */
- if (GST_PAD_DIRECTION (eventpad) != GST_PAD_DIRECTION (pad) && GST_PAD_IS_CONNECTED (eventpad)) {
+ /* for all pads in the opposite direction that are linked */
+ if (GST_PAD_IS_LINKED (eventpad)) {
if (GST_PAD_DIRECTION (eventpad) == GST_PAD_SRC) {
- gst_pad_push (eventpad, GST_BUFFER (gst_event_new (GST_EVENT_TYPE (event))));
+ /* increase the refcount */
+ gst_event_ref (event);
+ gst_pad_push (eventpad, GST_BUFFER (event));
}
else {
GstPad *peerpad = GST_PAD_CAST (GST_RPAD_PEER (eventpad));
- gst_pad_send_event (peerpad, gst_event_new (GST_EVENT_TYPE (event)));
+ /* we only send the event on one pad, multi-sinkpad elements
+ * should implement a handler */
+ g_list_free (orig);
+ return gst_pad_send_event (peerpad, event);
}
}
}
+ gst_event_unref (event);
+ g_list_free (orig);
+ return TRUE;
}
/**
* gst_pad_event_default:
- * @pad: the pad to operate on
- * @event: the event to handle
+ * @pad: a #GstPad to call the default event handler on.
+ * @event: the #GstEvent to handle.
+ *
+ * Invokes the default event handler for the given pad.
*
- * Invoke the default event handler for the given pad.
+ * Returns: TRUE if the event was sent succesfully.
*/
-void
+gboolean
gst_pad_event_default (GstPad *pad, GstEvent *event)
{
- GstElement *element = GST_PAD_PARENT (pad);
+ GstElement *element;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+ g_return_val_if_fail (event, FALSE);
+
+ element = GST_PAD_PARENT (pad);
- g_signal_emit (G_OBJECT (pad), gst_real_pad_signals[REAL_EVENT_RECEIVED], 0, event);
-
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
- gst_element_set_eos (element);
gst_pad_event_default_dispatch (pad, element, event);
- gst_event_free (event);
- /* we have to try to schedule another element because this one is disabled */
- gst_element_yield (element);
+ gst_element_set_eos (element);
break;
+ case GST_EVENT_DISCONTINUOUS:
+ {
+ guint64 time;
+
+ if (gst_event_discont_get_value (event, GST_FORMAT_TIME, &time)) {
+ if (gst_element_requires_clock (element) && element->clock) {
+ gst_clock_handle_discont (element->clock, time);
+ }
+ }
+ }
case GST_EVENT_FLUSH:
default:
- gst_pad_event_default_dispatch (pad, element, event);
- gst_event_free (event);
- break;
+ return gst_pad_event_default_dispatch (pad, element, event);
+ }
+ return TRUE;
+}
+
+/**
+ * gst_pad_dispatcher:
+ * @pad: a #GstPad to dispatch.
+ * @dispatch: the #GstDispatcherFunction to call.
+ * @data: gpointer user data passed to the dispatcher function.
+ *
+ * Invokes the given dispatcher function on all pads that are
+ * internally linked to the given pad.
+ * The GstPadDispatcherFunction should return TRUE when no further pads
+ * need to be processed.
+ *
+ * Returns: TRUE if one of the dispatcher functions returned TRUE.
+ */
+gboolean
+gst_pad_dispatcher (GstPad *pad, GstPadDispatcherFunction dispatch,
+ gpointer data)
+{
+ gboolean res = FALSE;
+ GList *int_pads, *orig;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+ g_return_val_if_fail (data, FALSE);
+
+ orig = int_pads = gst_pad_get_internal_links (pad);
+
+ while (int_pads) {
+ GstRealPad *int_rpad = GST_PAD_REALIZE (int_pads->data);
+ GstRealPad *int_peer = GST_RPAD_PEER (int_rpad);
+
+ if (int_peer) {
+ res = dispatch (GST_PAD_CAST (int_peer), data);
+ if (res)
+ break;
+ }
+ int_pads = g_list_next (int_pads);
}
+
+ g_list_free (orig);
+
+ return res;
}
/**
* gst_pad_send_event:
- * @pad: the pad to send the event to
- * @event: the event to send to the pad.
+ * @pad: a #GstPad to send the event to.
+ * @event: the #GstEvent to send to the pad.
*
- * Send the event to the pad.
+ * Sends the event to the pad.
*
* Returns: TRUE if the event was handled.
*/
gboolean
gst_pad_send_event (GstPad *pad, GstEvent *event)
{
- gboolean handled = FALSE;
+ gboolean success = FALSE;
+ GstRealPad *rpad;
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
g_return_val_if_fail (event, FALSE);
+ rpad = GST_PAD_REALIZE (pad);
+
if (GST_EVENT_SRC (event) == NULL)
- GST_EVENT_SRC (event) = gst_object_ref (GST_OBJECT (pad));
+ GST_EVENT_SRC (event) = gst_object_ref (GST_OBJECT (rpad));
- GST_DEBUG (GST_CAT_EVENT, "have event %d on pad %s:%s\n",
- GST_EVENT_TYPE (event), GST_DEBUG_PAD_NAME (pad));
+ GST_CAT_DEBUG (GST_CAT_EVENT, "have event %d on pad %s:%s",
+ GST_EVENT_TYPE (event), GST_DEBUG_PAD_NAME (rpad));
- if (GST_RPAD_EVENTFUNC (pad))
- handled = GST_RPAD_EVENTFUNC (pad) (pad, event);
+ if (GST_RPAD_EVENTHANDLER (rpad))
+ success = GST_RPAD_EVENTHANDLER (rpad) (GST_PAD_CAST (rpad), event);
else {
- GST_DEBUG(GST_CAT_EVENT, "there's no event function for pad %s:%s\n", GST_DEBUG_PAD_NAME (pad));
+ g_warning ("pad %s:%s has no event handler", GST_DEBUG_PAD_NAME (rpad));
+ gst_event_unref (event);
}
- if (!handled) {
- GST_DEBUG(GST_CAT_EVENT, "proceeding with default event behavior here\n");
- gst_pad_event_default (pad, event);
- handled = TRUE;
+ return success;
+}
+
+typedef struct
+{
+ GstFormat src_format;
+ gint64 src_value;
+ GstFormat *dest_format;
+ gint64 *dest_value;
+} GstPadConvertData;
+
+static gboolean
+gst_pad_convert_dispatcher (GstPad *pad, GstPadConvertData *data)
+{
+ return gst_pad_convert (pad, data->src_format, data->src_value,
+ data->dest_format, data->dest_value);
+}
+
+/**
+ * gst_pad_convert_default:
+ * @pad: a #GstPad to invoke the default converter on.
+ * @src_format: the source #GstFormat.
+ * @src_value: the source value.
+ * @dest_format: a pointer to the destination #GstFormat.
+ * @dest_value: a pointer to the destination value.
+ *
+ * Invokes the default converter on a pad.
+ * This will forward the call to the pad obtained
+ * using the internal link of
+ * the element.
+ *
+ * Returns: TRUE if the conversion could be performed.
+ */
+gboolean
+gst_pad_convert_default (GstPad *pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat *dest_format, gint64 *dest_value)
+{
+ GstPadConvertData data;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+ g_return_val_if_fail (dest_format, FALSE);
+ g_return_val_if_fail (dest_value, FALSE);
+
+ data.src_format = src_format;
+ data.src_value = src_value;
+ data.dest_format = dest_format;
+ data.dest_value = dest_value;
+
+ return gst_pad_dispatcher (pad, (GstPadDispatcherFunction)
+ gst_pad_convert_dispatcher, &data);
+}
+
+/**
+ * gst_pad_convert:
+ * @pad: a #GstPad to invoke the default converter on.
+ * @src_format: the source #GstFormat.
+ * @src_value: the source value.
+ * @dest_format: a pointer to the destination #GstFormat.
+ * @dest_value: a pointer to the destination value.
+ *
+ * Invokes a conversion on the pad.
+ *
+ * Returns: TRUE if the conversion could be performed.
+ */
+gboolean
+gst_pad_convert (GstPad *pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat *dest_format, gint64 *dest_value)
+{
+ GstRealPad *rpad;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+ g_return_val_if_fail (dest_format, FALSE);
+ g_return_val_if_fail (dest_value, FALSE);
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ rpad = GST_PAD_REALIZE (pad);
+
+ if (GST_RPAD_CONVERTFUNC (rpad)) {
+ return GST_RPAD_CONVERTFUNC (rpad) (GST_PAD_CAST (rpad), src_format,
+ src_value, dest_format, dest_value);
}
- return handled;
+ return FALSE;
+}
+
+typedef struct
+{
+ GstQueryType type;
+ GstFormat *format;
+ gint64 *value;
+} GstPadQueryData;
+
+static gboolean
+gst_pad_query_dispatcher (GstPad *pad, GstPadQueryData *data)
+{
+ return gst_pad_query (pad, data->type, data->format, data->value);
+}
+
+/**
+ * gst_pad_query_default:
+ * @pad: a #GstPad to invoke the default query on.
+ * @type: the #GstQueryType of the query to perform.
+ * @format: a pointer to the #GstFormat of the result.
+ * @value: a pointer to the result.
+ *
+ * Invokes the default query function on a pad.
+ *
+ * Returns: TRUE if the query could be performed.
+ */
+gboolean
+gst_pad_query_default (GstPad *pad, GstQueryType type,
+ GstFormat *format, gint64 *value)
+{
+ GstPadQueryData data;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+ g_return_val_if_fail (format, FALSE);
+ g_return_val_if_fail (value, FALSE);
+
+ data.type = type;
+ data.format = format;
+ data.value = value;
+
+ return gst_pad_dispatcher (pad, (GstPadDispatcherFunction)
+ gst_pad_query_dispatcher, &data);
}
+/**
+ * gst_pad_query:
+ * @pad: a #GstPad to invoke the default query on.
+ * @type: the #GstQueryType of the query to perform.
+ * @format: a pointer to the #GstFormat asked for.
+ * On return contains the #GstFormat used.
+ * @value: a pointer to the result.
+ *
+ * Queries a pad for one of the available properties. The format will be
+ * adjusted to the actual format used when specifying formats such as
+ * GST_FORMAT_DEFAULT.
+ * FIXME: Tell if the format can be adjusted when specifying a definite format.
+ *
+ * Returns: TRUE if the query could be performed.
+ */
+gboolean
+gst_pad_query (GstPad *pad, GstQueryType type,
+ GstFormat *format, gint64 *value)
+{
+ GstRealPad *rpad;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+ g_return_val_if_fail (format, FALSE);
+ g_return_val_if_fail (value, FALSE);
+
+ rpad = GST_PAD_REALIZE (pad);
+
+ g_return_val_if_fail (rpad, FALSE);
+
+ if (GST_RPAD_QUERYFUNC (rpad))
+ return GST_RPAD_QUERYFUNC (rpad) (GST_PAD_CAST (pad), type, format, value);
+
+ return FALSE;
+}
+
+static gboolean
+gst_pad_get_formats_dispatcher (GstPad *pad, const GstFormat **data)
+{
+ *data = gst_pad_get_formats (pad);
+
+ return TRUE;
+}
+
+/**
+ * gst_pad_get_formats_default:
+ * @pad: a #GstPad to query
+ *
+ * Invoke the default format dispatcher for the pad.
+ *
+ * Returns: An array of GstFormats ended with a 0 value.
+ */
+const GstFormat*
+gst_pad_get_formats_default (GstPad *pad)
+{
+ GstFormat *result = NULL;
+
+ gst_pad_dispatcher (pad, (GstPadDispatcherFunction)
+ gst_pad_get_formats_dispatcher, &result);
+
+ return result;
+}
+
+/**
+ * gst_pad_get_formats:
+ * @pad: a #GstPad to query
+ *
+ * Gets the list of supported formats from the pad.
+ *
+ * Returns: An array of GstFormats ended with a 0 value.
+ */
+const GstFormat*
+gst_pad_get_formats (GstPad *pad)
+{
+ GstRealPad *rpad;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+
+ rpad = GST_PAD_REALIZE (pad);
+
+ if (GST_RPAD_FORMATSFUNC (rpad))
+ return GST_RPAD_FORMATSFUNC (rpad) (GST_PAD_CAST (pad));
+
+ return NULL;
+}
projects / platform / upstream / gstreamer.git / blobdiff