mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-01 20:30:41 +00:00
5be7eb77cf
Original commit message from CVS: all info to describe a dparam is now in the GstDParamSpec struct. The resemblance to LADSPA descriptors is intentional
146 lines
4.7 KiB
C
146 lines
4.7 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>
|
|
|
|
#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_VALUE(dparam) ((dparam)->value)
|
|
#define GST_DPARAM_SPEC(dparam) ((dparam)->spec)
|
|
#define GST_DPARAM_TYPE(dparam) ((dparam)->type)
|
|
|
|
#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_DEFAULT_UPDATE_PERIOD(dparam) ((dparam)->default_update_period)
|
|
#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_GET_POINT(dparam, timestamp) \
|
|
((dparam->get_point_func)(dparam, timestamp))
|
|
|
|
#define GST_DPARAM_FIND_POINT(dparam, timestamp, search_flag) \
|
|
((dparam->find_point_func)(dparam, data, search_flag))
|
|
|
|
#define GST_DPARAM_DO_UPDATE(dparam, timestamp) \
|
|
((dparam->do_update_func)(dparam, timestamp))
|
|
|
|
#define GST_DPARAM_INSERT_POINT(dparam, timestamp) \
|
|
((dparam->insert_point_func)(dparam, timestamp))
|
|
|
|
#define GST_DPARAM_REMOVE_POINT(dparam, data) \
|
|
((dparam->remove_point_func)(dparam, data))
|
|
|
|
typedef enum {
|
|
GST_DPARAM_CLOSEST,
|
|
GST_DPARAM_CLOSEST_AFTER,
|
|
GST_DPARAM_CLOSEST_BEFORE,
|
|
GST_DPARAM_EXACT,
|
|
} GstDParamSearchFlag;
|
|
|
|
typedef enum {
|
|
GST_DPARAM_NOT_FOUND = 0,
|
|
GST_DPARAM_FOUND_EXACT,
|
|
GST_DPARAM_FOUND_CLOSEST,
|
|
} GstDParamSearchResult;
|
|
|
|
typedef struct _GstDParam GstDParam;
|
|
typedef struct _GstDParamClass GstDParamClass;
|
|
typedef struct _GstDParamSpec GstDParamSpec;
|
|
|
|
typedef GValue** (*GstDParamInsertPointFunction) (GstDParam *dparam, guint64 timestamp);
|
|
typedef void (*GstDParamRemovePointFunction) (GstDParam *dparam, GValue** point);
|
|
typedef GValue** (*GstDParamGetPointFunction) (GstDParam *dparam, gint64 timestamp);
|
|
typedef GstDParamSearchResult (*GstDParamFindPointFunction) (GstDParam *dparam, gint64 *timestamp, GstDParamSearchFlag search_flag);
|
|
|
|
typedef void (*GstDParamDoUpdateFunction) (GstDParam *dparam, gint64 timestamp);
|
|
|
|
struct _GstDParam {
|
|
GstObject object;
|
|
|
|
GstDParamGetPointFunction get_point_func;
|
|
GstDParamFindPointFunction find_point_func;
|
|
|
|
GstDParamDoUpdateFunction do_update_func;
|
|
|
|
GstDParamInsertPointFunction insert_point_func;
|
|
GstDParamRemovePointFunction remove_point_func;
|
|
|
|
GMutex *lock;
|
|
GValue *value;
|
|
GstDParamSpec *spec;
|
|
GValue **point;
|
|
GType type;
|
|
gint64 last_update_timestamp;
|
|
gint64 next_update_timestamp;
|
|
gint64 default_update_period;
|
|
gboolean ready_for_update;
|
|
};
|
|
|
|
struct _GstDParamClass {
|
|
GstObjectClass parent_class;
|
|
|
|
/* signal callbacks */
|
|
};
|
|
|
|
struct _GstDParamSpec {
|
|
gchar *dparam_name;
|
|
gchar *unit_name;
|
|
GValue *min_val;
|
|
GValue *max_val;
|
|
GValue *default_val;
|
|
gboolean is_log;
|
|
gboolean is_rate;
|
|
};
|
|
|
|
GType gst_dparam_get_type (void);
|
|
GstDParam* gst_dparam_new (GType type);
|
|
void gst_dparam_attach (GstDParam *dparam, GstObject *parent, GValue *value, GstDParamSpec *spec);
|
|
GValue** gst_dparam_new_value_array(GType type, ...);
|
|
void gst_dparam_set_value_from_string(GValue *value, const gchar *value_str);
|
|
|
|
/**********************
|
|
* GstDParamSmooth
|
|
**********************/
|
|
|
|
GstDParam* gst_dparam_smooth_new (GType type);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
#endif /* __GST_DPARAM_H__ */
|