mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 10:11:08 +00:00
b4d1d31ded
Original commit message from CVS: a few internal changes: - put last_update_timestamp into GstDParam - added a GstDParamUpdateInfo enum to the update function so that dparams know what context they are updating in (for example, the first update since the pipeline was started) - rewrote bogus next_timestamp calculation in GstDParamSmooth
108 lines
3.7 KiB
C
108 lines
3.7 KiB
C
/* GStreamer
|
|
* Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
|
|
*
|
|
* gstdparam.h: Dynamic Parameter functionality
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __GST_DPARAM_H__
|
|
#define __GST_DPARAM_H__
|
|
|
|
#include <gst/gstobject.h>
|
|
#include <gst/gstprops.h>
|
|
#include "dparamcommon.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
#define GST_TYPE_DPARAM (gst_dparam_get_type ())
|
|
#define GST_DPARAM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DPARAM,GstDParam))
|
|
#define GST_DPARAM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DPARAM,GstDParam))
|
|
#define GST_IS_DPARAM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DPARAM))
|
|
#define GST_IS_DPARAM_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DPARAM))
|
|
|
|
#define GST_DPARAM_NAME(dparam) (GST_OBJECT_NAME(dparam))
|
|
#define GST_DPARAM_PARENT(dparam) (GST_OBJECT_PARENT(dparam))
|
|
#define GST_DPARAM_CHANGE_VALUE(dparam) ((dparam)->change_value)
|
|
#define GST_DPARAM_PARAM_SPEC(dparam) ((dparam)->param_spec)
|
|
#define GST_DPARAM_MANAGER(dparam) ((dparam)->manager)
|
|
#define GST_DPARAM_TYPE(dparam) ((dparam)->type)
|
|
#define GST_DPARAM_UNIT_NAME(dparam) ((dparam)->unit_name)
|
|
#define GST_DPARAM_IS_LOG(dparam) ((dparam)->is_log)
|
|
#define GST_DPARAM_META_VALUES(dparam) ((dparam)->meta_values)
|
|
#define GST_DPARAM_META_PARAM_SPECS(dparam) ((dparam)->meta_param_specs)
|
|
#define GST_DPARAM_LOCK(dparam) (g_mutex_lock((dparam)->lock))
|
|
#define GST_DPARAM_UNLOCK(dparam) (g_mutex_unlock((dparam)->lock))
|
|
|
|
#define GST_DPARAM_READY_FOR_UPDATE(dparam) ((dparam)->ready_for_update)
|
|
#define GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam) ((dparam)->next_update_timestamp)
|
|
#define GST_DPARAM_LAST_UPDATE_TIMESTAMP(dparam) ((dparam)->last_update_timestamp)
|
|
|
|
#define GST_DPARAM_DO_UPDATE(dparam, timestamp, value, update_info) \
|
|
((dparam->do_update_func)(dparam, timestamp, value, update_info))
|
|
|
|
typedef struct _GstDParamClass GstDParamClass;
|
|
|
|
|
|
typedef enum {
|
|
GST_DPARAM_UPDATE_FIRST,
|
|
GST_DPARAM_UPDATE_NORMAL,
|
|
} GstDParamUpdateInfo;
|
|
|
|
typedef void (*GstDParamDoUpdateFunction) (GstDParam *dparam, gint64 timestamp, GValue *value, GstDParamUpdateInfo update_info);
|
|
|
|
struct _GstDParam {
|
|
GstObject object;
|
|
|
|
GstDParamDoUpdateFunction do_update_func;
|
|
|
|
GMutex *lock;
|
|
|
|
gfloat value_float;
|
|
gint value_int;
|
|
gint64 value_int64;
|
|
|
|
GstDParamManager *manager;
|
|
GParamSpec *param_spec;
|
|
GType type;
|
|
gboolean ready_for_update;
|
|
|
|
gint64 next_update_timestamp;
|
|
gint64 last_update_timestamp;
|
|
gchar *unit_name;
|
|
gboolean is_log;
|
|
};
|
|
|
|
struct _GstDParamClass {
|
|
GstObjectClass parent_class;
|
|
|
|
/* signal callbacks */
|
|
};
|
|
|
|
|
|
GType gst_dparam_get_type (void);
|
|
GstDParam* gst_dparam_new (GType type);
|
|
void gst_dparam_attach (GstDParam *dparam, GstDParamManager *manager, GParamSpec *param_spec, gchar *unit_name);
|
|
void gst_dparam_detach (GstDParam *dparam);
|
|
void gst_dparam_do_update_default (GstDParam *dparam, gint64 timestamp, GValue *value, GstDParamUpdateInfo update_info);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
#endif /* __GST_DPARAM_H__ */
|