gstreamer/libs/gst/controller/gsthelper.c
Sebastian Dröge 286cd75855 libs/gst/controller/: API: Refactor GstController into the core controller which can take a GstControlSource for prov...
Original commit message from CVS:
Reviewed by: Stefan Kost <ensonic@users.sf.net>
* libs/gst/controller/Makefile.am:
* libs/gst/controller/gstcontroller.c:
(gst_controlled_property_add_interpolation_control_source),
(gst_controlled_property_new), (gst_controlled_property_free),
(gst_controller_find_controlled_property),
(gst_controller_new_valist), (gst_controller_new_list),
(gst_controller_new), (gst_controller_remove_properties_valist),
(gst_controller_remove_properties_list),
(gst_controller_remove_properties),
(gst_controller_set_property_disabled),
(gst_controller_set_disabled), (gst_controller_set_control_source),
(gst_controller_get_control_source), (gst_controller_get),
(gst_controller_sync_values), (gst_controller_get_value_array),
(_gst_controller_dispose), (gst_controller_get_type),
(gst_controlled_property_set_interpolation_mode),
(gst_controller_set), (gst_controller_set_from_list),
(gst_controller_unset), (gst_controller_unset_all),
(gst_controller_get_all), (gst_controller_set_interpolation_mode):
* libs/gst/controller/gstcontroller.h:
* libs/gst/controller/gstcontrollerprivate.h:
* libs/gst/controller/gstcontrolsource.c:
(gst_control_source_class_init), (gst_control_source_init),
(gst_control_source_get_value),
(gst_control_source_get_value_array), (gst_control_source_bind):
* libs/gst/controller/gstcontrolsource.h:
* libs/gst/controller/gsthelper.c: (gst_object_set_control_source),
(gst_object_get_control_source):
* libs/gst/controller/gstinterpolation.c:
(gst_interpolation_control_source_find_control_point_node),
(gst_interpolation_control_source_get_first_value),
(_interpolate_none_get), (interpolate_none_get),
(interpolate_none_get_boolean_value_array),
(interpolate_none_get_enum_value_array),
(interpolate_none_get_string_value_array),
(_interpolate_trigger_get), (interpolate_trigger_get),
(interpolate_trigger_get_boolean_value_array),
(interpolate_trigger_get_enum_value_array),
(interpolate_trigger_get_string_value_array):
* libs/gst/controller/gstinterpolationcontrolsource.c:
(gst_control_point_free), (gst_interpolation_control_source_reset),
(gst_interpolation_control_source_new),
(gst_interpolation_control_source_set_interpolation_mode),
(gst_interpolation_control_source_bind),
(gst_control_point_compare), (gst_control_point_find),
(gst_interpolation_control_source_set_internal),
(gst_interpolation_control_source_set),
(gst_interpolation_control_source_set_from_list),
(gst_interpolation_control_source_unset),
(gst_interpolation_control_source_unset_all),
(gst_interpolation_control_source_get_all),
(gst_interpolation_control_source_get_count),
(gst_interpolation_control_source_init),
(gst_interpolation_control_source_finalize),
(gst_interpolation_control_source_dispose),
(gst_interpolation_control_source_class_init):
* libs/gst/controller/gstinterpolationcontrolsource.h:
* libs/gst/controller/gstinterpolationcontrolsourceprivate.h:
API: Refactor GstController into the core controller which can take
a GstControlSource for providing actual values for timestamps.
Implement a interpolation control source and use this for backward
compatibility, deprecate a bunch of functions that are now handled
by GstControlSource or GstInterpolationControlSource.
Make it possible to disable the controller completely or only for
specific properties. Fixes #450711.
* docs/libs/gstreamer-libs-docs.sgml:
* docs/libs/gstreamer-libs-sections.txt:
* docs/libs/gstreamer-libs.types:
Add new functions and classes to the docs.
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
* tests/examples/controller/audio-example.c: (main):
Port unit test and example to the new API and add some new
unit tests.
2007-07-06 21:50:02 +00:00

370 lines
11 KiB
C

/* GStreamer
*
* Copyright (C) <2005> Stefan Kost <ensonic at users dot sf dot net>
*
* gsthelper.c: GObject convenience methods for using dynamic properties
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gstcontrollergobject
* @short_description: #GObject convinience methods for using dynamic properties
* @see_also: #GstController
*
* These methods allow to use some #GstController functionallity directly from
* the #GObject class.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdarg.h>
#include "gstcontrollerprivate.h"
#include "gstcontroller.h"
#define GST_CAT_DEFAULT gst_controller_debug
GST_DEBUG_CATEGORY_EXTERN (GST_CAT_DEFAULT);
extern GQuark __gst_controller_key;
/**
* gst_object_control_properties:
* @object: the object of which some properties should be controlled
* @...: %NULL terminated list of property names that should be controlled
*
* Convenience function for GObject
*
* Creates a GstController that allows you to dynamically control one, or more, GObject properties.
* If the given GObject already has a GstController, it adds the given properties to the existing
* controller and returns that controller.
*
* Returns: The GstController with which the user can control the given properties dynamically or NULL if
* one or more of the given properties aren't available, or cannot be controlled, for the given element.
* Since: 0.9
*/
GstController *
gst_object_control_properties (GObject * object, ...)
{
GstController *ctrl;
va_list var_args;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
va_start (var_args, object);
ctrl = gst_controller_new_valist (object, var_args);
va_end (var_args);
return (ctrl);
}
/**
* gst_object_uncontrol_properties:
* @object: the object of which some properties should not be controlled anymore
* @...: %NULL terminated list of property names that should be controlled
*
* Convenience function for GObject
*
* Removes the given element's properties from it's controller
*
* Returns: %FALSE if one of the given property names isn't handled by the
* controller, %TRUE otherwise
* Since: 0.9
*/
gboolean
gst_object_uncontrol_properties (GObject * object, ...)
{
gboolean res = FALSE;
GstController *ctrl;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
va_list var_args;
va_start (var_args, object);
res = gst_controller_remove_properties_valist (ctrl, var_args);
va_end (var_args);
}
return (res);
}
/**
* gst_object_get_controller:
* @object: the object that has controlled properties
*
* Gets the controller for the given GObject
*
* Returns: the controller handling some of the given element's properties, %NULL if no controller
* Since: 0.9
*/
GstController *
gst_object_get_controller (GObject * object)
{
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
return (g_object_get_qdata (object, __gst_controller_key));
}
/**
* gst_object_set_controller:
* @object: the object that should get the controller
* @controller: the controller object to plug in
*
* Sets the controller on the given GObject
*
* Returns: %FALSE if the GObject already has an controller, %TRUE otherwise
* Since: 0.9
*/
gboolean
gst_object_set_controller (GObject * object, GstController * controller)
{
GstController *ctrl;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
g_return_val_if_fail (controller, FALSE);
if (!(ctrl = g_object_get_qdata (object, __gst_controller_key))) {
g_object_set_qdata (object, __gst_controller_key, controller);
return (TRUE);
}
return (FALSE);
}
/**
* gst_object_suggest_next_sync:
* @object: the object that has controlled properties
*
* Convenience function for GObject
*
* Returns: same thing as gst_controller_suggest_next_sync()
* Since: 0.10.13
*/
GstClockTime
gst_object_suggest_next_sync (GObject * object)
{
GstController *ctrl = NULL;
g_return_val_if_fail (G_IS_OBJECT (object), GST_CLOCK_TIME_NONE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
return gst_controller_suggest_next_sync (ctrl);
}
return (GST_CLOCK_TIME_NONE);
}
/**
* gst_object_sync_values:
* @object: the object that has controlled properties
* @timestamp: the time that should be processed
*
* Convenience function for GObject
*
* Returns: same thing as gst_controller_sync_values()
* Since: 0.9
*/
gboolean
gst_object_sync_values (GObject * object, GstClockTime timestamp)
{
GstController *ctrl = NULL;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
return gst_controller_sync_values (ctrl, timestamp);
}
return (FALSE);
}
/**
* gst_object_set_control_source:
* @object: the controller object
* @property_name: name of the property for which the #GstControlSource should be set
* @csource: the #GstControlSource that should be used for the property
*
* Sets the #GstControlSource for @property_name. If there already was a #GstControlSource
* for this property it will be unreferenced.
*
* Returns: %FALSE if the given property isn't handled by the controller or the new #GstControlSource
* couldn't be bound to the property, %TRUE if everything worked as expected.
*
* Since: 0.10.14
*/
gboolean
gst_object_set_control_source (GObject * object, gchar * property_name,
GstControlSource * csource)
{
GstController *ctrl = NULL;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
g_return_val_if_fail (GST_IS_CONTROL_SOURCE (csource), FALSE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
return gst_controller_set_control_source (ctrl, property_name, csource);
}
return FALSE;
}
/**
* gst_object_get_control_source:
* @object: the object
* @property_name: name of the property for which the #GstControlSource should be get
*
* Gets the corresponding #GstControlSource for the property. This should be unreferenced
* again after use.
*
* Returns: the #GstControlSource for @property_name or NULL if the property is not
* controlled by this controller or no #GstControlSource was assigned yet.
*
* Since: 0.10.14
*/
GstControlSource *
gst_object_get_control_source (GObject * object, gchar * property_name)
{
GstController *ctrl = NULL;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
return gst_controller_get_control_source (ctrl, property_name);
}
return FALSE;
}
/**
* gst_object_get_value_arrays:
* @object: the object that has controlled properties
* @timestamp: the time that should be processed
* @value_arrays: list to return the control-values in
*
* Function to be able to get an array of values for one or more given element
* properties.
*
* If the GstValueArray->values array in list nodes is NULL, it will be created
* by the function.
* The type of the values in the array are the same as the property's type.
*
* The g_object_* functions are just convenience functions for GObject
*
* Returns: %TRUE if the given array(s) could be filled, %FALSE otherwise
* Since: 0.9
*/
gboolean
gst_object_get_value_arrays (GObject * object, GstClockTime timestamp,
GSList * value_arrays)
{
GstController *ctrl;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
return gst_controller_get_value_arrays (ctrl, timestamp, value_arrays);
}
return (FALSE);
}
/**
* gst_object_get_value_array:
* @object: the object that has controlled properties
* @timestamp: the time that should be processed
* @value_array: array to put control-values in
*
* Function to be able to get an array of values for one element properties
*
* If the GstValueArray->values array is NULL, it will be created by the function.
* The type of the values in the array are the same as the property's type.
*
* The g_object_* functions are just convenience functions for GObject
*
* Returns: %TRUE if the given array(s) could be filled, %FALSE otherwise
* Since: 0.9
*/
gboolean
gst_object_get_value_array (GObject * object, GstClockTime timestamp,
GstValueArray * value_array)
{
GstController *ctrl;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
return gst_controller_get_value_array (ctrl, timestamp, value_array);
}
return (FALSE);
}
/**
* gst_object_get_control_rate:
* @object: the object that has controlled properties
*
* Obtain the control-rate for this @object. Audio processing #GstElement
* objects will use this rate to sub-divide their processing loop and call
* gst_object_sync_values() inbetween. The length of the processing segment
* should be up to @control-rate nanoseconds.
*
* If the @object is not under property control, this will return
* %GST_CLOCK_TIME_NONE. This allows the element to avoid the sub-dividing.
*
* The control-rate is not expected to change if the element is in
* %GST_STATE_PAUSED or %GST_STATE_PLAYING.
*
* Returns: the control rate in nanoseconds
* Since: 0.10.10
*/
GstClockTime
gst_object_get_control_rate (GObject * object)
{
GstController *ctrl;
GstClockTime control_rate = GST_CLOCK_TIME_NONE;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
g_object_get (ctrl, "control-rate", &control_rate, NULL);
}
return (control_rate);
}
/**
* gst_object_set_control_rate:
* @object: the object that has controlled properties
* @control_rate: the new control-rate in nanoseconds.
*
* Change the control-rate for this @object. Audio processing #GstElement
* objects will use this rate to sub-divide their processing loop and call
* gst_object_sync_values() inbetween. The length of the processing segment
* should be up to @control-rate nanoseconds.
*
* The control-rate should not change if the element is in %GST_STATE_PAUSED or
* %GST_STATE_PLAYING.
*
* Since: 0.10.10
*/
void
gst_object_set_control_rate (GObject * object, GstClockTime control_rate)
{
GstController *ctrl;
g_return_if_fail (G_IS_OBJECT (object));
if ((ctrl = g_object_get_qdata (object, __gst_controller_key))) {
g_object_set (ctrl, "control-rate", control_rate, NULL);
}
}