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/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
*
* gstdparammanager.h: Dynamic Parameter group 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_DPMAN_H__
#define __GST_DPMAN_H__
#include <gst/gstobject.h>
#include <gst/gstprops.h>
#include <libs/control/gstdparam.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_DPMAN (gst_dpman_get_type ())
#define GST_DPMAN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DPMAN,GstDParamManager))
#define GST_DPMAN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DPMAN,GstDParamManager))
#define GST_IS_DPMAN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DPMAN))
#define GST_IS_DPMAN_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DPMAN))
#define GST_DPMAN_NAME(dpman) (GST_OBJECT_NAME(dpman))
#define GST_DPMAN_PARENT(dpman) (GST_OBJECT_PARENT(dpman))
#define GST_DPMAN_DPARAMS(dpman) ((dpman)->dparams)
#define GST_DPMAN_DPARAMS_LIST(dpman) ((dpman)->dparams_list)
#define GST_DPMAN_MODE_NAME(dpman) ((dpman)->mode_name)
#define GST_DPMAN_MODE(dpman) ((dpman)->mode)
#define GST_DPMAN_MODE_DATA(dpman) ((dpman)->mode_data)
#define GST_DPMAN_RATE(dpman) ((dpman)->rate)
typedef enum {
GST_DPMAN_CALLBACK,
GST_DPMAN_DIRECT,
GST_DPMAN_ARRAY,
} GstDPMUpdateMethod;
typedef struct _GstDParamManager GstDParamManager;
typedef struct _GstDParamManagerClass GstDParamManagerClass;
typedef struct _GstDPMMode GstDPMMode;
typedef struct _GstDParamWrapper GstDParamWrapper;
typedef guint (*GstDPMModePreProcessFunction) (GstDParamManager *dpman, guint frames, gint64 timestamp);
typedef guint (*GstDPMModeProcessFunction) (GstDParamManager *dpman, guint frame_count);
typedef void (*GstDPMModeSetupFunction) (GstDParamManager *dpman);
typedef void (*GstDPMModeTeardownFunction) (GstDParamManager *dpman);
typedef void (*GstDPMUpdateFunction) (GValue *value, gpointer data);
struct _GstDParamManager {
GstObject object;
GHashTable *dparams;
GSList *dparams_list;
gchar *mode_name;
GstDPMMode* mode;
gpointer mode_data;
gint64 timestamp;
guint rate;
};
struct _GstDParamManagerClass {
GstObjectClass parent_class;
GHashTable *modes;
/* signal callbacks */
};
struct _GstDPMMode {
GstDPMModePreProcessFunction preprocessfunc;
GstDPMModeProcessFunction processfunc;
GstDPMModeSetupFunction setupfunc;
GstDPMModeTeardownFunction teardownfunc;
};
struct _GstDParamWrapper {
GstDParamSpec* spec;
GValue *value;
GstDParam *dparam;
GstDPMUpdateMethod update_method;
gpointer update_data;
GstDPMUpdateFunction update_func;
};
#define GST_DPMAN_PREPROCESSFUNC(dpman) (((dpman)->mode)->preprocessfunc)
#define GST_DPMAN_PROCESSFUNC(dpman) (((dpman)->mode)->processfunc)
#define GST_DPMAN_SETUPFUNC(dpman) (((dpman)->mode)->setupfunc)
#define GST_DPMAN_TEARDOWNFUNC(dpman) (((dpman)->mode)->teardownfunc)
#define GST_DPMAN_PREPROCESS(dpman, buffer_size, timestamp) \
(GST_DPMAN_PREPROCESSFUNC(dpman)(dpman, buffer_size, timestamp))
#define GST_DPMAN_PROCESS(dpman, frame_count) \
(GST_DPMAN_PROCESSFUNC(dpman)(dpman, frame_count))
#define GST_DPMAN_PROCESS_COUNTDOWN(dpman, frame_countdown, frame_count) \
(frame_countdown-- || \
(frame_countdown = GST_DPMAN_PROCESS(dpman, frame_count)))
#define GST_DPMAN_DO_UPDATE(dpwrap) ((dpwrap->update_func)(dpwrap->value, dpwrap->update_data))
GType gst_dpman_get_type (void);
GstDParamManager* gst_dpman_new (gchar *name, GstElement *parent);
void gst_dpman_set_parent (GstDParamManager *dpman, GstElement *parent);
GstDParamManager* gst_dpman_get_manager (GstElement *parent);
gboolean gst_dpman_add_required_dparam_callback (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
GstDPMUpdateFunction update_func,
gpointer update_data);
gboolean gst_dpman_add_required_dparam_direct (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
gpointer update_data);
gboolean gst_dpman_add_required_dparam_array (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
gpointer update_data);
void gst_dpman_remove_required_dparam (GstDParamManager *dpman, gchar *dparam_name);
gboolean gst_dpman_attach_dparam (GstDParamManager *dpman, gchar *dparam_name, GstDParam *dparam);
void gst_dpman_dettach_dparam (GstDParamManager *dpman, gchar *dparam_name);
GstDParam* gst_dpman_get_dparam(GstDParamManager *dpman, gchar *name);
GType gst_dpman_get_dparam_type (GstDParamManager *dpman, gchar *name);
GstDParamSpec** gst_dpman_list_dparam_specs(GstDParamManager *dpman);
GstDParamSpec* gst_dpman_get_dparam_spec (GstDParamManager *dpman, gchar *dparam_name);
void gst_dpman_dparam_spec_has_changed (GstDParamManager *dpman, gchar *dparam_name);
void gst_dpman_set_rate_change_pad(GstDParamManager *dpman, GstPad *pad);
gboolean gst_dpman_set_mode(GstDParamManager *dpman, gchar *modename);
void gst_dpman_register_mode (GstDParamManagerClass *klass,
gchar *modename,
GstDPMModePreProcessFunction preprocessfunc,
GstDPMModeProcessFunction processfunc,
GstDPMModeSetupFunction setupfunc,
GstDPMModeTeardownFunction teardownfunc);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_DPMAN_H__ */
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