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09141c6e1f
Since we started depending on GLib 2.44, we can be sure this macro is defined (it will be a no-op on compilers that don't support it). For plugins we should just start using `G_DECLARE_FINAL_TYPE` which means we no longer need the macro there, but for most types in core we don't want to break ABI, which means it's better to just keep it like it is (and use the `#ifdef` instead).
144 lines
5 KiB
C
144 lines
5 KiB
C
/* GStreamer
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*
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* Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
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*
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* gstcontrolbinding.h: Attachment for control sources
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_CONTROL_BINDING_H__
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#define __GST_CONTROL_BINDING_H__
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#include <gst/gstconfig.h>
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#include <glib-object.h>
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G_BEGIN_DECLS
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#define GST_TYPE_CONTROL_BINDING \
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(gst_control_binding_get_type())
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#define GST_CONTROL_BINDING(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CONTROL_BINDING,GstControlBinding))
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#define GST_CONTROL_BINDING_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CONTROL_BINDING,GstControlBindingClass))
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#define GST_IS_CONTROL_BINDING(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CONTROL_BINDING))
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#define GST_IS_CONTROL_BINDING_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CONTROL_BINDING))
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#define GST_CONTROL_BINDING_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CONTOL_SOURCE, GstControlBindingClass))
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typedef struct _GstControlBinding GstControlBinding;
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typedef struct _GstControlBindingClass GstControlBindingClass;
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typedef struct _GstControlBindingPrivate GstControlBindingPrivate;
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#include <gst/gstcontrolsource.h>
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/**
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* GstControlBindingConvert: (attributes doc.skip=true)
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* FIXME(2.0): remove, this is unused
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*/
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typedef void (* GstControlBindingConvert) (GstControlBinding *binding, gdouble src_value, GValue *dest_value);
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/**
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* GstControlBinding:
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* @name: name of the property of this binding
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* @pspec: #GParamSpec for this property
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*
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* The instance structure of #GstControlBinding.
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*/
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struct _GstControlBinding {
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GstObject parent;
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/*< public >*/
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gchar *name;
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GParamSpec *pspec;
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/*< private >*/
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#ifndef GST_DISABLE_DEPRECATED
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GstObject *object; /* GstObject owning the property
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* (== parent when bound) */
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#else
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gpointer __object;
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#endif
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gboolean disabled;
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union {
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struct {
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GstControlBindingPrivate *priv;
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} abi;
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gpointer _gst_reserved[GST_PADDING];
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} ABI;
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};
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/**
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* GstControlBindingClass:
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* @parent_class: Parent class
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* @sync_values: implementation for updating the target values
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* @get_value: implementation to fetch a single control-value
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* @get_value_array: implementation to fetch a series of control-values
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* @get_g_value_array: implementation to fetch a series of control-values
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* as g_values
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*
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* The class structure of #GstControlBinding.
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*/
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struct _GstControlBindingClass
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{
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GstObjectClass parent_class;
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/*< public >*/
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gboolean (* sync_values) (GstControlBinding *binding, GstObject *object, GstClockTime timestamp, GstClockTime last_sync);
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GValue * (* get_value) (GstControlBinding *binding, GstClockTime timestamp);
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gboolean (* get_value_array) (GstControlBinding *binding, GstClockTime timestamp,GstClockTime interval, guint n_values, gpointer values);
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gboolean (* get_g_value_array) (GstControlBinding *binding, GstClockTime timestamp,GstClockTime interval, guint n_values, GValue *values);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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#define GST_CONTROL_BINDING_PSPEC(cb) (((GstControlBinding *) cb)->pspec)
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GST_API
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GType gst_control_binding_get_type (void);
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/* Functions */
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GST_API
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gboolean gst_control_binding_sync_values (GstControlBinding * binding, GstObject *object,
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GstClockTime timestamp, GstClockTime last_sync);
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GST_API
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GValue * gst_control_binding_get_value (GstControlBinding *binding,
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GstClockTime timestamp);
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GST_API
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gboolean gst_control_binding_get_value_array (GstControlBinding *binding, GstClockTime timestamp,
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GstClockTime interval, guint n_values, gpointer values);
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GST_API
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gboolean gst_control_binding_get_g_value_array (GstControlBinding *binding, GstClockTime timestamp,
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GstClockTime interval, guint n_values, GValue *values);
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GST_API
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void gst_control_binding_set_disabled (GstControlBinding * binding, gboolean disabled);
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GST_API
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gboolean gst_control_binding_is_disabled (GstControlBinding * binding);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstControlBinding, gst_object_unref)
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G_END_DECLS
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#endif /* __GST_CONTROL_BINDING_H__ */
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