[gst-cvs] CVS: gstreamer/libs/control Makefile.am,NONE,1.2.2.1 gstcontrol.c,NONE,1.1.2.1 gstcontrol.h,NONE,1.2.2.1 gstdparam.c,NONE,1.1.2.1 gstdparam.h,NONE,1.1.2.1 gstdparammanager.c,NONE,1.1.2.1 gstdparammanager.h,NONE,1.1.2.1 gstdplinearinterp.c,NONE,1.2.2.1 gstdplinearinterp.h,NONE,1.2.2.1
Erik Walthinsen
omegahacker at users.sourceforge.net
Wed Oct 17 01:52:16 PDT 2001
Update of /cvsroot/gstreamer/gstreamer/libs/control
In directory usw-pr-cvs1:/tmp/cvs-serv20849/libs/control
Added Files:
Tag: BRANCH-EVENTS1
Makefile.am gstcontrol.c gstcontrol.h gstdparam.c gstdparam.h
gstdparammanager.c gstdparammanager.h gstdplinearinterp.c
gstdplinearinterp.h
Log Message:
merge from HEAD on 20011016
--- NEW FILE: Makefile.am ---
filterdir = $(libdir)/gst
filter_LTLIBRARIES = libgstcontrol.la
libgstcontrol_la_SOURCES = \
gstcontrol.c \
gstdparammanager.c \
gstdparam.c \
gstdplinearinterp.c
libgstcontrolincludedir = $(includedir)/gst/libs/control
libgstcontrolinclude_HEADERS = \
gstcontrol.h \
gstdparammanager.h \
gstdparam.h \
gstdplinearinterp.h
libgstcontrol_la_LIBADD = -lm
CFLAGS += -O2 $(FOMIT_FRAME_POINTER) -finline-functions -ffast-math
--- NEW FILE: gstcontrol.c ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at yahoo.co.uk>
*
* gstcontrol.c: GStreamer control utility library
*
* 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.
*/
#include "gstcontrol.h"
--- NEW FILE: gstcontrol.h ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at yahoo.co.uk>
*
* gstcontrol.h: GStreamer control utility library
*
* 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_CONTROL_H__
#define __GST_CONTROL_H__
#include <gst/gstobject.h>
#include <gst/gstprops.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <libs/control/gstdparammanager.h>
#include <libs/control/gstdparam.h>
#include <libs/control/gstdplinearinterp.h>
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_CONTROL_H__ */
--- NEW FILE: gstdparam.c ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at yahoo.co.uk>
*
* gstdparam.c: 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.
*/
#include <math.h>
#include <string.h>
#include <gst/gstinfo.h>
#include "gstdparam.h"
#include "gstdparammanager.h"
static void gst_dparam_class_init (GstDParamClass *klass);
static void gst_dparam_init (GstDParam *dparam);
static void gst_dparam_do_update_realtime (GstDParam *dparam, gint64 timestamp);
static GValue** gst_dparam_get_point_realtime (GstDParam *dparam, gint64 timestamp);
GType
gst_dparam_get_type(void) {
static GType dparam_type = 0;
if (!dparam_type) {
static const GTypeInfo dparam_info = {
sizeof(GstDParamClass),
NULL,
NULL,
(GClassInitFunc)gst_dparam_class_init,
NULL,
NULL,
sizeof(GstDParam),
0,
(GInstanceInitFunc)gst_dparam_init,
};
dparam_type = g_type_register_static(GST_TYPE_OBJECT, "GstDParam", &dparam_info, 0);
}
return dparam_type;
}
static void
gst_dparam_class_init (GstDParamClass *klass)
{
GObjectClass *gobject_class;
GstDParamClass *dparam_class;
GstObjectClass *gstobject_class;
gobject_class = (GObjectClass*)klass;
dparam_class = (GstDParamClass*)klass;
gstobject_class = (GstObjectClass*) klass;
//gstobject_class->save_thyself = gst_dparam_save_thyself;
}
static void
gst_dparam_init (GstDParam *dparam)
{
g_return_if_fail (dparam != NULL);
GST_DPARAM_VALUE(dparam) = NULL;
GST_DPARAM_TYPE(dparam) = 0;
GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam)=0LL;
GST_DPARAM_LAST_UPDATE_TIMESTAMP(dparam)=0LL;
GST_DPARAM_READY_FOR_UPDATE(dparam)=FALSE;
dparam->lock = g_mutex_new ();
}
/**
* gst_dparam_new:
* @type: the type that this dparam will store
*
* Returns: a new instance of GstDParam
*/
GstDParam*
gst_dparam_new (GType type)
{
GstDParam *dparam;
dparam = g_object_new (gst_dparam_get_type (), NULL);
dparam->do_update_func = gst_dparam_do_update_realtime;
dparam->get_point_func = gst_dparam_get_point_realtime;
dparam->point = gst_dparam_new_value_array(type, 0);
GST_DPARAM_TYPE(dparam) = type;
return dparam;
}
/**
* gst_dparam_attach
* @dparam: GstDParam instance
* @parent: the GstDParamManager that this dparam belongs to
*
*/
void
gst_dparam_attach (GstDParam *dparam, GstObject *parent, GValue *value, GstDParamSpec *spec)
{
g_return_if_fail (dparam != NULL);
g_return_if_fail (GST_IS_DPARAM (dparam));
g_return_if_fail (GST_DPARAM_PARENT (dparam) == NULL);
g_return_if_fail (parent != NULL);
g_return_if_fail (G_IS_OBJECT (parent));
g_return_if_fail (GST_IS_DPMAN (parent));
g_return_if_fail ((gpointer)dparam != (gpointer)parent);
g_return_if_fail (value != NULL);
g_return_if_fail (spec != NULL);
g_return_if_fail (GST_DPARAM_TYPE(dparam) == G_VALUE_TYPE(value));
GST_DPARAM_NAME(dparam) = spec->dparam_name;
GST_DPARAM_VALUE(dparam) = value;
GST_DPARAM_SPEC(dparam) = spec;
gst_object_set_parent (GST_OBJECT (dparam), parent);
}
/**
* gst_dparam_new_value_array
* @type: the type of the first GValue in the array
* @...: the type of other GValues in the array
*
* The list of types should be terminated with a 0.
* If the type of a value is not yet known then use G_TYPE_NONE .
*
* Returns: an newly created array of GValues
*/
GValue**
gst_dparam_new_value_array(GType type, ...)
{
GValue **point;
GValue *value;
guint x;
guint values_length = 0;
va_list var_args;
GType each_type;
va_start (var_args, type);
each_type = type;
while (each_type){
values_length++;
each_type = va_arg (var_args, GType);
}
va_end (var_args);
point = g_new0(GValue*,values_length + 1);
va_start (var_args, type);
each_type = type;
for (x=0 ; x < values_length ; x++){
value = g_new0(GValue,1);
if (each_type != G_TYPE_NONE){
g_value_init(value, each_type);
}
point[x] = value;
each_type = va_arg (var_args, GType);
}
point[values_length] = NULL;
va_end (var_args);
GST_DEBUG(GST_CAT_PARAMS, "array with %d values created\n", values_length);
return point;
}
void
gst_dparam_set_value_from_string(GValue *value, const gchar *value_str)
{
g_return_if_fail(value != NULL);
g_return_if_fail(value_str != NULL);
GST_DEBUG(GST_CAT_PARAMS, "parsing '%s' to type %s\n", value_str, g_type_name(G_VALUE_TYPE(value)));
switch (G_VALUE_TYPE(value)) {
case G_TYPE_STRING:
g_value_set_string(value, g_strdup(value_str));
break;
case G_TYPE_ENUM:
case G_TYPE_INT: {
gint i;
sscanf (value_str, "%d", &i);
g_value_set_int(value, i);
break;
}
case G_TYPE_UINT: {
guint i;
sscanf (value_str, "%u", &i);
g_value_set_uint(value, i);
break;
}
case G_TYPE_LONG: {
glong i;
sscanf (value_str, "%ld", &i);
g_value_set_long(value, i);
break;
}
case G_TYPE_ULONG: {
gulong i;
sscanf (value_str, "%lu", &i);
g_value_set_ulong(value, i);
break;
}
case G_TYPE_BOOLEAN: {
gboolean i = FALSE;
if (!strncmp ("true", value_str, 4)) i = TRUE;
g_value_set_boolean(value, i);
break;
}
case G_TYPE_CHAR: {
gchar i;
sscanf (value_str, "%c", &i);
g_value_set_char(value, i);
break;
}
case G_TYPE_UCHAR: {
guchar i;
sscanf (value_str, "%c", &i);
g_value_set_uchar(value, i);
break;
}
case G_TYPE_FLOAT: {
gfloat i;
sscanf (value_str, "%f", &i);
g_value_set_float(value, i);
break;
}
case G_TYPE_DOUBLE: {
gfloat i;
sscanf (value_str, "%g", &i);
g_value_set_double(value, (gdouble)i);
break;
}
default:
break;
}
}
static void
gst_dparam_do_update_realtime (GstDParam *dparam, gint64 timestamp)
{
GST_DPARAM_LOCK(dparam);
GST_DPARAM_READY_FOR_UPDATE(dparam) = FALSE;
GST_DEBUG(GST_CAT_PARAMS, "updating value for %s(%p)\n",GST_DPARAM_NAME (dparam),dparam);
g_value_copy(dparam->point[0], GST_DPARAM_VALUE(dparam));
GST_DPARAM_UNLOCK(dparam);
}
static GValue**
gst_dparam_get_point_realtime (GstDParam *dparam, gint64 timestamp)
{
GST_DEBUG(GST_CAT_PARAMS, "getting point for %s(%p)\n",GST_DPARAM_NAME (dparam),dparam);
return dparam->point;
}
/**********************
* GstDParamSmooth
**********************/
static void gst_dparam_do_update_smooth (GstDParam *dparam, gint64 timestamp);
static GValue** gst_dparam_get_point_smooth (GstDParam *dparam, gint64 timestamp);
/**
* gst_dparam_smooth_new:
* @type: the type that this dparam will store
*
* Returns: a new instance of GstDParamSmooth
*/
GstDParam*
gst_dparam_smooth_new (GType type)
{
GstDParam *dparam;
dparam = g_object_new (gst_dparam_get_type (), NULL);
dparam->do_update_func = gst_dparam_do_update_smooth;
dparam->get_point_func = gst_dparam_get_point_smooth;
dparam->point = gst_dparam_new_value_array(type, type, G_TYPE_FLOAT, 0);
GST_DPARAM_TYPE(dparam) = type;
return dparam;
}
static void
gst_dparam_do_update_smooth (GstDParam *dparam, gint64 timestamp)
{
gint64 time_diff;
gfloat time_ratio;
time_diff = MIN(GST_DPARAM_DEFAULT_UPDATE_PERIOD(dparam),
timestamp - GST_DPARAM_LAST_UPDATE_TIMESTAMP(dparam));
time_ratio = (gfloat)time_diff / g_value_get_float(dparam->point[2]);
GST_DPARAM_LOCK(dparam);
GST_DPARAM_LAST_UPDATE_TIMESTAMP(dparam) = GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam);
while(GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam) <= timestamp){
GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam) += GST_DPARAM_DEFAULT_UPDATE_PERIOD(dparam);
}
GST_DEBUG(GST_CAT_PARAMS, "last:%lld current:%lld next:%lld\n",
GST_DPARAM_LAST_UPDATE_TIMESTAMP(dparam), timestamp, GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam));
switch (G_VALUE_TYPE(GST_DPARAM_VALUE(dparam))){
case G_TYPE_FLOAT: {
gfloat current, target, max_change, current_diff, final_val;
target = g_value_get_float(dparam->point[0]);
current = g_value_get_float(GST_DPARAM_VALUE(dparam));
max_change = time_ratio * g_value_get_float(dparam->point[1]);
GST_DEBUG(GST_CAT_PARAMS, "target:%f current:%f max_change:%f \n",
target, current, max_change);
if (dparam->spec->is_log){
gfloat current_log;
current_log = log(current);
current_diff = ABS(current_log - log(target));
if (current_diff > max_change)
final_val = (target < current) ? exp(current_log-max_change) : exp(current_log+max_change);
else
final_val = target;
}
else {
current_diff = ABS (current - target);
if (current_diff > max_change)
final_val = (target < current) ? current-max_change : current+max_change;
else
final_val = target;
}
GST_DPARAM_READY_FOR_UPDATE(dparam) = (current_diff > max_change);
g_value_set_float(GST_DPARAM_VALUE(dparam), final_val);
break;
}
default:
break;
}
//GST_DEBUG(GST_CAT_PARAMS, "smooth update for %s(%p): %f\n",
// GST_DPARAM_NAME (dparam),dparam, g_value_get_float(GST_DPARAM_VALUE(dparam)));
GST_DPARAM_UNLOCK(dparam);
}
static GValue**
gst_dparam_get_point_smooth (GstDParam *dparam, gint64 timestamp)
{
GST_DEBUG(GST_CAT_PARAMS, "getting point for %s(%p)\n",GST_DPARAM_NAME (dparam),dparam);
return dparam->point;
}
--- NEW FILE: gstdparam.h ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at 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__ */
--- NEW FILE: gstdparammanager.c ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at yahoo.co.uk>
*
* gstdparammanager.c: 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.
*/
#include "gstdparammanager.h"
#include <gst/gstelement.h>
#include <gst/gstinfo.h>
static GHashTable *_element_registry;
static void gst_dpman_class_init (GstDParamManagerClass *klass);
static void gst_dpman_init (GstDParamManager *dpman);
static GstDParamWrapper* gst_dpman_new_wrapper(GstDParamManager *dpman, gchar *dparam_name, GType type, GstDPMUpdateMethod update_method);
static GstDParamWrapper* gst_dpman_get_wrapper(GstDParamManager *dpman, gchar *dparam_name);
static void gst_dpman_state_change (GstElement *element, gint state, GstDParamManager *dpman);
static void gst_dpman_caps_changed (GstPad *pad, GstCaps *caps, GstDParamManager *dpman);
static guint gst_dpman_preprocess_synchronous(GstDParamManager *dpman, guint frames, gint64 timestamp);
static guint gst_dpman_preprocess_noop(GstDParamManager *dpman, guint frames, gint64 timestamp);
static guint gst_dpman_process_noop(GstDParamManager *dpman, guint frame_count);
GType
gst_dpman_get_type (void)
{
static GType dpman_type = 0;
if (!dpman_type) {
static const GTypeInfo dpman_info = {
sizeof(GstDParamManagerClass),
NULL,
NULL,
(GClassInitFunc)gst_dpman_class_init,
NULL,
NULL,
sizeof(GstDParamManager),
0,
(GInstanceInitFunc)gst_dpman_init,
};
dpman_type = g_type_register_static(GST_TYPE_OBJECT, "GstDParamManager", &dpman_info, 0);
}
return dpman_type;
}
static void
gst_dpman_class_init (GstDParamManagerClass *klass)
{
GstObjectClass *gstobject_class;
GObjectClass *gobject_class;
gstobject_class = (GstObjectClass*) klass;
gobject_class = (GObjectClass*) klass;
klass->modes = g_hash_table_new(g_str_hash,g_str_equal);
_element_registry = g_hash_table_new(NULL,NULL);
gst_dpman_register_mode (klass, "synchronous",
gst_dpman_preprocess_synchronous, gst_dpman_process_noop, NULL, NULL);
gst_dpman_register_mode (klass, "asynchronous",
gst_dpman_preprocess_noop, gst_dpman_process_noop, NULL, NULL);
gst_dpman_register_mode (klass, "disabled",
gst_dpman_preprocess_noop, gst_dpman_process_noop, NULL, NULL);
}
static void
gst_dpman_init (GstDParamManager *dpman)
{
GST_DPMAN_DPARAMS(dpman) = g_hash_table_new(g_str_hash,g_str_equal);
GST_DPMAN_DPARAMS_LIST(dpman) = NULL;
GST_DPMAN_NAME(dpman) = NULL;
GST_DPMAN_PARENT(dpman) = NULL;
GST_DPMAN_MODE_NAME(dpman) = NULL;
GST_DPMAN_MODE(dpman) = NULL;
GST_DPMAN_MODE_DATA(dpman) = NULL;
GST_DPMAN_RATE(dpman) = 0;
}
/**
* gst_dpman_new:
* @name: name of the GstDParamManager instance
* @parent: element which created this instance
*
* Returns: a new instance of GstDParamManager
*/
GstDParamManager*
gst_dpman_new (gchar *name, GstElement *parent)
{
GstDParamManager *dpman;
g_return_val_if_fail (name != NULL, NULL);
dpman = g_object_new (gst_dpman_get_type (), NULL);
gst_object_set_name (GST_OBJECT (dpman), name);
gst_dpman_set_parent(dpman, parent);
gst_dpman_set_mode(dpman, "disabled");
return dpman;
}
/**
* gst_dpman_add_required_dparam_callback:
* @dpman: GstDParamManager instance
* @dparam_name: a parameter name unique to this GstDParamManager
* @type: the GValue type that this parameter will store
* @update_func: callback to update the element with the new value
* @update_data: will be included in the call to update_func
*
* Returns: true if it was successfully added
*/
gboolean
gst_dpman_add_required_dparam_callback (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
GstDPMUpdateFunction update_func,
gpointer update_data)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, FALSE);
g_return_val_if_fail (GST_IS_DPMAN (dpman), FALSE);
g_return_val_if_fail (update_func != NULL, FALSE);
dpwrap = gst_dpman_new_wrapper(dpman, dparam_name, type, GST_DPMAN_CALLBACK);
g_return_val_if_fail (dpwrap != NULL, FALSE);
GST_DEBUG(GST_CAT_PARAMS,"adding required callback dparam '%s' of type %s\n", dparam_name, g_type_name(type));
dpwrap->update_func = update_func;
dpwrap->update_data = update_data;
return TRUE;
}
/**
* gst_dpman_add_required_dparam_direct:
* @dpman: GstDParamManager instance
* @dparam_name: a parameter name unique to this GstDParamManager
* @type: the GValue type that this parameter will store
* @update_data: pointer to the member to be updated
*
* Returns: true if it was successfully added
*/
gboolean
gst_dpman_add_required_dparam_direct (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
gpointer update_data)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, FALSE);
g_return_val_if_fail (GST_IS_DPMAN (dpman), FALSE);
g_return_val_if_fail (update_data != NULL, FALSE);
dpwrap = gst_dpman_new_wrapper(dpman, dparam_name, type, GST_DPMAN_DIRECT);
g_return_val_if_fail (dpwrap != NULL, FALSE);
GST_DEBUG(GST_CAT_PARAMS,"adding required direct dparam '%s' of type %s\n", dparam_name, g_type_name(type));
dpwrap->update_data = update_data;
return TRUE;
}
/**
* gst_dpman_add_required_dparam_array:
* @dpman: GstDParamManager instance
* @dparam_name: a parameter name unique to this GstDParamManager
* @type: the GValue type that this parameter will store
* @update_data: pointer to where the array will be stored
*
* Returns: true if it was successfully added
*/
gboolean
gst_dpman_add_required_dparam_array (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
gpointer update_data)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, FALSE);
g_return_val_if_fail (GST_IS_DPMAN (dpman), FALSE);
g_return_val_if_fail (update_data != NULL, FALSE);
dpwrap = gst_dpman_new_wrapper(dpman, dparam_name, type, GST_DPMAN_ARRAY);
g_return_val_if_fail (dpwrap != NULL, FALSE);
GST_DEBUG(GST_CAT_PARAMS,"adding required array dparam '%s' of type %s\n", dparam_name, g_type_name(type));
dpwrap->update_data = update_data;
return TRUE;
}
/**
* gst_dpman_remove_required_dparam:
* @dpman: GstDParamManager instance
* @dparam_name: the name of an existing parameter
*
*/
void
gst_dpman_remove_required_dparam (GstDParamManager *dpman, gchar *dparam_name)
{
GstDParamWrapper* dpwrap;
g_return_if_fail (dpman != NULL);
g_return_if_fail (GST_IS_DPMAN (dpman));
g_return_if_fail (dparam_name != NULL);
dpwrap = gst_dpman_get_wrapper(dpman, dparam_name);
g_return_if_fail(dpwrap != NULL);
g_return_if_fail(dpwrap->dparam == NULL);
GST_DEBUG(GST_CAT_PARAMS, "removing required dparam: %s\n", dparam_name);
g_hash_table_remove(GST_DPMAN_DPARAMS(dpman), dparam_name);
GST_DPMAN_DPARAMS_LIST(dpman) = g_slist_remove(GST_DPMAN_DPARAMS_LIST(dpman), dpwrap);
g_free(dpwrap->value);
g_free(dpwrap);
}
/**
* gst_dpman_attach_dparam:
* @dpman: GstDParamManager instance
* @dparam_name: a name previously added with gst_dpman_add_required_dparam
* @dparam: GstDParam instance to attach
*
* Returns: true if it was successfully attached
*/
gboolean
gst_dpman_attach_dparam (GstDParamManager *dpman, gchar *dparam_name, GstDParam *dparam)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, FALSE);
g_return_val_if_fail (GST_IS_DPMAN (dpman), FALSE);
g_return_val_if_fail (dparam_name != NULL, FALSE);
g_return_val_if_fail (dparam != NULL, FALSE);
g_return_val_if_fail (GST_IS_DPARAM (dparam), FALSE);
g_return_val_if_fail (dparam != NULL, FALSE);
dpwrap = gst_dpman_get_wrapper(dpman, dparam_name);
g_return_val_if_fail(dpwrap != NULL, FALSE);
g_return_val_if_fail(dpwrap->value != NULL, FALSE);
dpwrap->dparam = dparam;
gst_dparam_attach(dparam, GST_OBJECT(dpman), dpwrap->value, dpwrap->spec);
return TRUE;
}
/**
* gst_dpman_dettach_dparam:
* @dpman: GstDParamManager instance
* @dparam_name: the name of a parameter with a previously attached GstDParam
*
*/
void
gst_dpman_dettach_dparam (GstDParamManager *dpman, gchar *dparam_name)
{
GstDParamWrapper* dpwrap;
g_return_if_fail (dpman != NULL);
g_return_if_fail (GST_IS_DPMAN (dpman));
g_return_if_fail (dparam_name != NULL);
dpwrap = gst_dpman_get_wrapper(dpman, dparam_name);
g_return_if_fail(dpwrap);
GST_DPARAM_VALUE(dpwrap->dparam) = NULL;
GST_DPARAM_NAME(dpwrap->dparam) = NULL;
gst_object_unparent (GST_OBJECT(dpwrap->dparam));
dpwrap->dparam = NULL;
}
/**
* gst_dpman_get_dparam:
* @dpman: GstDParamManager instance
* @name: the name of an existing dparam instance
*
* Returns: the dparam with the given name - or NULL otherwise
*/
GstDParam *
gst_dpman_get_dparam (GstDParamManager *dpman, gchar *name)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, NULL);
g_return_val_if_fail (GST_IS_DPMAN (dpman), NULL);
g_return_val_if_fail (name != NULL, NULL);
dpwrap = g_hash_table_lookup(GST_DPMAN_DPARAMS(dpman), name);
g_return_val_if_fail (dpwrap != NULL, NULL);
return dpwrap->dparam;
}
/**
* gst_dpman_get_dparam_type:
* @dpman: GstDParamManager instance
* @name: the name of dparam
*
* Returns: the type that this dparam requires/uses
*/
GType
gst_dpman_get_dparam_type (GstDParamManager *dpman, gchar *name)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, 0);
g_return_val_if_fail (GST_IS_DPMAN (dpman), 0);
g_return_val_if_fail (name != NULL, 0);
dpwrap = g_hash_table_lookup(GST_DPMAN_DPARAMS(dpman), name);
g_return_val_if_fail (dpwrap != NULL, 0);
return G_VALUE_TYPE(dpwrap->value);
}
GstDParamSpec**
gst_dpman_list_dparam_specs(GstDParamManager *dpman)
{
GstDParamWrapper* dpwrap;
GSList *dpwraps;
GstDParamSpec** dparam_specs;
guint x = 0;
g_return_val_if_fail (dpman != NULL, NULL);
g_return_val_if_fail (GST_IS_DPMAN (dpman), NULL);
dpwraps = GST_DPMAN_DPARAMS_LIST(dpman);
dparam_specs = g_new0(GstDParamSpec*, g_slist_length(dpwraps) + 1);
while (dpwraps){
dpwrap = (GstDParamWrapper*)dpwraps->data;
dparam_specs[x++] = dpwrap->spec;
dpwraps = g_slist_next(dpwraps);
}
return dparam_specs;
}
GstDParamSpec*
gst_dpman_get_dparam_spec (GstDParamManager *dpman, gchar *dparam_name)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, NULL);
g_return_val_if_fail (GST_IS_DPMAN (dpman), NULL);
g_return_val_if_fail (dparam_name != NULL, NULL);
dpwrap = gst_dpman_get_wrapper(dpman, dparam_name);
return dpwrap->spec;
}
void
gst_dpman_dparam_spec_has_changed (GstDParamManager *dpman, gchar *dparam_name)
{
}
/**
* gst_dpman_register_mode
* @klass: GstDParamManagerClass class instance
* @modename: the unique name of the new mode
* @preprocessfunc: the function which will be called before each buffer is processed
* @processfunc: the function which may be called throughout the processing of a buffer
* @setupfunc: the function which initialises the mode when activated
* @teardownfunc: the function which frees any resources the mode uses
*
*/
void
gst_dpman_register_mode (GstDParamManagerClass *klass,
gchar *modename,
GstDPMModePreProcessFunction preprocessfunc,
GstDPMModeProcessFunction processfunc,
GstDPMModeSetupFunction setupfunc,
GstDPMModeTeardownFunction teardownfunc)
{
GstDPMMode *mode;
g_return_if_fail (klass != NULL);
g_return_if_fail (modename != NULL);
g_return_if_fail (GST_IS_DPMAN_CLASS (klass));
mode = g_new0(GstDPMMode,1);
mode->preprocessfunc = preprocessfunc;
mode->processfunc = processfunc;
mode->setupfunc = setupfunc;
mode->teardownfunc = teardownfunc;
g_hash_table_insert(klass->modes, modename, mode);
GST_DEBUG(GST_CAT_PARAMS, "mode '%s' registered\n", modename);
}
/**
* gst_dpman_set_mode
* @dpman: GstDParamManager instance
* @modename: the name of the mode to use
*
* Returns: TRUE if the mode was set, FALSE otherwise
*/
gboolean
gst_dpman_set_mode(GstDParamManager *dpman, gchar *modename)
{
GstDPMMode *mode=NULL;
GstDParamManagerClass *oclass;
g_return_val_if_fail (dpman != NULL, FALSE);
g_return_val_if_fail (GST_IS_DPMAN (dpman), FALSE);
g_return_val_if_fail (modename != NULL, FALSE);
oclass = (GstDParamManagerClass*)(G_OBJECT_GET_CLASS(dpman));
mode = g_hash_table_lookup(oclass->modes, modename);
g_return_val_if_fail (mode != NULL, FALSE);
GST_DEBUG(GST_CAT_PARAMS, "setting mode to %s\n", modename);
if (GST_DPMAN_MODE(dpman) && GST_DPMAN_TEARDOWNFUNC(dpman)){
GST_DPMAN_TEARDOWNFUNC(dpman)(dpman);
}
GST_DPMAN_MODE(dpman) = mode;
if (GST_DPMAN_SETUPFUNC(dpman)){
GST_DPMAN_SETUPFUNC(dpman)(dpman);
}
return TRUE;
}
/**
* gst_dpman_set_parent
* @dpman: GstDParamManager instance
* @parent: the element that this GstDParamManager belongs to
*
*/
void
gst_dpman_set_parent (GstDParamManager *dpman, GstElement *parent)
{
g_return_if_fail (dpman != NULL);
g_return_if_fail (GST_IS_DPMAN (dpman));
g_return_if_fail (parent != NULL);
g_return_if_fail (GST_IS_ELEMENT (parent));
g_hash_table_insert(_element_registry, parent, dpman);
gst_object_set_parent (GST_OBJECT (dpman), GST_OBJECT(parent));
g_signal_connect(G_OBJECT(parent), "state_change",
G_CALLBACK (gst_dpman_state_change), dpman);
}
/**
* gst_dpman_get_manager
* @parent: the element that the desired GstDParamManager belongs to
*
* Returns: the GstDParamManager which belongs to this element or NULL
* if it doesn't exist
*/
GstDParamManager *
gst_dpman_get_manager (GstElement *parent)
{
GstDParamManager *dpman;
g_return_val_if_fail (parent != NULL, NULL);
g_return_val_if_fail (GST_IS_ELEMENT (parent), NULL);
dpman = (GstDParamManager*)g_hash_table_lookup(_element_registry, parent);
g_return_val_if_fail (dpman != NULL, NULL);
return dpman;
}
/**
* gst_dpman_set_rate_change_pad
* @dpman: GstDParamManager instance
* @pad: the pad which may have a "rate" caps property
*
*/
void
gst_dpman_set_rate_change_pad(GstDParamManager *dpman, GstPad *pad)
{
g_return_if_fail (dpman != NULL);
g_return_if_fail (GST_IS_DPMAN (dpman));
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_signal_connect(G_OBJECT(pad), "caps_changed",
G_CALLBACK (gst_dpman_caps_changed), dpman);
}
static GstDParamWrapper*
gst_dpman_get_wrapper(GstDParamManager *dpman, gchar *dparam_name)
{
g_return_val_if_fail (dpman != NULL, NULL);
g_return_val_if_fail (GST_IS_DPMAN (dpman), NULL);
g_return_val_if_fail (dparam_name != NULL, NULL);
return g_hash_table_lookup(GST_DPMAN_DPARAMS(dpman), dparam_name);
}
static GstDParamWrapper*
gst_dpman_new_wrapper(GstDParamManager *dpman, gchar *dparam_name, GType type, GstDPMUpdateMethod update_method)
{
GstDParamWrapper* dpwrap;
g_return_val_if_fail (dpman != NULL, NULL);
g_return_val_if_fail (GST_IS_DPMAN (dpman), NULL);
g_return_val_if_fail (dparam_name != NULL, NULL);
g_return_val_if_fail(gst_dpman_get_wrapper(dpman, dparam_name) == NULL, NULL);
dpwrap = g_new0(GstDParamWrapper,1);
dpwrap->update_method = update_method;
dpwrap->value = g_new0(GValue,1);
g_value_init(dpwrap->value, type);
dpwrap->spec = g_new0(GstDParamSpec,1);
dpwrap->spec->dparam_name = dparam_name;
dpwrap->spec->min_val = g_new0(GValue,1);
dpwrap->spec->max_val = g_new0(GValue,1);
dpwrap->spec->default_val = g_new0(GValue,1);
g_value_init(dpwrap->spec->min_val, type);
g_value_init(dpwrap->spec->max_val, type);
g_value_init(dpwrap->spec->default_val, type);
g_hash_table_insert(GST_DPMAN_DPARAMS(dpman), dparam_name, dpwrap);
GST_DPMAN_DPARAMS_LIST(dpman) = g_slist_append(GST_DPMAN_DPARAMS_LIST(dpman), dpwrap);
return dpwrap;
}
static void
gst_dpman_state_change (GstElement *element, gint state, GstDParamManager *dpman)
{
GSList *dwraps;
GstDParam *dparam;
GstDParamWrapper *dpwrap;
g_return_if_fail (dpman != NULL);
g_return_if_fail (GST_IS_DPMAN (dpman));
if (state == GST_STATE_PLAYING){
GST_DEBUG(GST_CAT_PARAMS, "initialising params\n");
// force all params to be updated
dwraps = GST_DPMAN_DPARAMS_LIST(dpman);
while (dwraps){
dpwrap = (GstDParamWrapper*)dwraps->data;
dparam = dpwrap->dparam;
if (dparam){
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
if (dparam->spec){
g_value_copy(dparam->spec->default_val, GST_DPARAM_VALUE(dparam));
}
}
dwraps = g_slist_next(dwraps);
}
}
}
static void
gst_dpman_caps_changed (GstPad *pad, GstCaps *caps, GstDParamManager *dpman)
{
g_return_if_fail (caps != NULL);
g_return_if_fail (dpman != NULL);
g_return_if_fail (GST_IS_DPMAN (dpman));
GST_DPMAN_RATE(dpman) = gst_caps_get_int (caps, "rate");
GST_DEBUG(GST_CAT_PARAMS, "got caps change %d\n", GST_DPMAN_RATE(dpman));
}
static guint
gst_dpman_preprocess_synchronous(GstDParamManager *dpman, guint frames, gint64 timestamp)
{
GSList *dwraps;
GstDParam *dparam;
GstDParamWrapper *dpwrap;
guint x;
g_return_val_if_fail (dpman != NULL, frames);
g_return_val_if_fail (GST_IS_DPMAN (dpman), frames);
// now check whether any passive dparams are ready for an update
dwraps = GST_DPMAN_DPARAMS_LIST(dpman);
while (dwraps){
dpwrap = (GstDParamWrapper*)dwraps->data;
dparam = dpwrap->dparam;
if (dparam && (GST_DPARAM_READY_FOR_UPDATE(dparam) &&
(GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam) <= timestamp))){
// this will make dpwrap->value contain the latest value.
// now we just need to get it to the element
GST_DPARAM_DO_UPDATE(dparam, timestamp);
switch (dpwrap->update_method) {
// direct method - set the value directly in the struct of the element
case GST_DPMAN_DIRECT:
GST_DEBUG(GST_CAT_PARAMS, "doing direct update\n");
switch (G_VALUE_TYPE(dpwrap->value)){
case G_TYPE_CHAR:
*(gchar*)dpwrap->update_data = g_value_get_char(dpwrap->value);
break;
case G_TYPE_UCHAR:
*(guchar*)dpwrap->update_data = g_value_get_uchar(dpwrap->value);
break;
case G_TYPE_BOOLEAN:
*(gboolean*)dpwrap->update_data = g_value_get_boolean(dpwrap->value);
break;
case G_TYPE_INT:
*(gint*)dpwrap->update_data = g_value_get_int(dpwrap->value);
break;
case G_TYPE_UINT:
*(guint*)dpwrap->update_data = g_value_get_uint(dpwrap->value);
break;
case G_TYPE_LONG:
*(glong*)dpwrap->update_data = g_value_get_long(dpwrap->value);
break;
case G_TYPE_ULONG:
*(gulong*)dpwrap->update_data = g_value_get_ulong(dpwrap->value);
break;
case G_TYPE_FLOAT:
*(gfloat*)dpwrap->update_data = g_value_get_float(dpwrap->value);
break;
case G_TYPE_DOUBLE:
*(gdouble*)dpwrap->update_data = g_value_get_double(dpwrap->value);
break;
case G_TYPE_POINTER:
*(gpointer*)dpwrap->update_data = g_value_get_pointer(dpwrap->value);
break;
default:
break;
}
break;
// callback method - call the element's callback so it can do what it likes
case GST_DPMAN_CALLBACK:
GST_DEBUG(GST_CAT_PARAMS, "doing callback update\n");
GST_DPMAN_DO_UPDATE(dpwrap);
break;
// array method - generate an array of the right size
// with each value being the same (in synchronous update mode)
case GST_DPMAN_ARRAY:
GST_DEBUG(GST_CAT_PARAMS, "doing array update\n");
switch (G_VALUE_TYPE(dpwrap->value)){
case G_TYPE_CHAR:
(gchar*)dpwrap->update_data = g_new(gchar, frames);
*(gchar*)dpwrap->update_data = g_value_get_char(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((gchar*)dpwrap->update_data)[x] = *(gchar*)dpwrap->update_data;
break;
case G_TYPE_UCHAR:
(guchar*)dpwrap->update_data = g_new(guchar, frames);
*(guchar*)dpwrap->update_data = g_value_get_uchar(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((guchar*)dpwrap->update_data)[x] = *(guchar*)dpwrap->update_data;
break;
case G_TYPE_BOOLEAN:
(gboolean*)dpwrap->update_data = g_new(gboolean, frames);
*(gboolean*)dpwrap->update_data = g_value_get_boolean(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((gboolean*)dpwrap->update_data)[x] = *(gboolean*)dpwrap->update_data;
break;
case G_TYPE_INT:
(gint*)dpwrap->update_data = g_new(gint, frames);
*(gint*)dpwrap->update_data = g_value_get_int(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((gint*)dpwrap->update_data)[x] = *(gint*)dpwrap->update_data;
break;
case G_TYPE_UINT:
(guint*)dpwrap->update_data = g_new(guint, frames);
*(guint*)dpwrap->update_data = g_value_get_uint(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((guint*)dpwrap->update_data)[x] = *(guint*)dpwrap->update_data;
break;
case G_TYPE_LONG:
(glong*)dpwrap->update_data = g_new(glong, frames);
*(glong*)dpwrap->update_data = g_value_get_long(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((glong*)dpwrap->update_data)[x] = *(glong*)dpwrap->update_data;
break;
case G_TYPE_ULONG:
(gulong*)dpwrap->update_data = g_new(gulong, frames);
*(gulong*)dpwrap->update_data = g_value_get_ulong(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((gulong*)dpwrap->update_data)[x] = *(gulong*)dpwrap->update_data;
break;
case G_TYPE_FLOAT:
(gfloat*)dpwrap->update_data = g_new(gfloat, frames);
*(gfloat*)dpwrap->update_data = g_value_get_float(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((gfloat*)dpwrap->update_data)[x] = *(gfloat*)dpwrap->update_data;
break;
case G_TYPE_DOUBLE:
(gdouble*)dpwrap->update_data = g_new(gdouble, frames);
*(gdouble*)dpwrap->update_data = g_value_get_double(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((gdouble*)dpwrap->update_data)[x] = *(gdouble*)dpwrap->update_data;
break;
case G_TYPE_POINTER:
(gpointer*)dpwrap->update_data = g_new(gpointer, frames);
*(gpointer*)dpwrap->update_data = g_value_get_pointer(dpwrap->value);
for (x = 1 ; x < frames ; x++)
((gpointer*)dpwrap->update_data)[x] = *(gpointer*)dpwrap->update_data;
break;
default:
break;
}
break;
default:
break;
}
}
dwraps = g_slist_next(dwraps);
}
return frames;
}
static guint
gst_dpman_preprocess_noop(GstDParamManager *dpman, guint frames, gint64 timestamp)
{
return frames;
}
static guint
gst_dpman_process_noop(GstDParamManager *dpman, guint frame_count)
{
return 0;
}
--- NEW FILE: gstdparammanager.h ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at 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__ */
--- NEW FILE: gstdplinearinterp.c ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at yahoo.co.uk>
*
* gstdplinearinterp.c: linear interpolation dynamic parameter
*
* 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.
*/
#include "gstdplinearinterp.h"
static void gst_dp_linint_class_init (GstDParamClass *klass);
static void gst_dp_linint_base_class_init (GstDParamClass *klass);
static void gst_dp_linint_init (GstDParam *dp_linint);
GType
gst_dp_linint_get_type(void) {
static GType dp_linint_type = 0;
if (!dp_linint_type) {
static const GTypeInfo dp_linint_info = {
sizeof(GstDParamClass),
(GBaseInitFunc)gst_dp_linint_base_class_init,
NULL,
(GClassInitFunc)gst_dp_linint_class_init,
NULL,
NULL,
sizeof(GstDParam),
0,
(GInstanceInitFunc)gst_dp_linint_init,
};
dp_linint_type = g_type_register_static(GST_TYPE_DPARAM, "GstDParamLinInterp", &dp_linint_info, 0);
}
return dp_linint_type;
}
static void
gst_dp_linint_base_class_init (GstDParamClass *klass)
{
}
static void
gst_dp_linint_class_init (GstDParamClass *klass)
{
}
static void
gst_dp_linint_init (GstDParam *dp_linint)
{
g_return_if_fail (dp_linint != NULL);
}
/**
* gst_dp_linint_new:
* @type: the type that this dp_linint will store
*
* Returns: a new instance of GstDParam
*/
GstDParam*
gst_dp_linint_new (GType type)
{
GstDParam *dparam;
GstDParamLinInterp *dp_linint;
dp_linint = g_object_new (gst_dp_linint_get_type (), NULL);
dparam = GST_DPARAM(dp_linint);
return dparam;
}
--- NEW FILE: gstdplinearinterp.h ---
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org at yahoo.co.uk>
*
* gstdplinearinterp.h: linear interpolation dynamic parameter
*
* 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_DP_LININT_H__
#define __GST_DP_LININT_H__
#include <gst/gstobject.h>
#include "gstdparam.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_DP_LININT (gst_dp_linint_get_type ())
#define GST_DP_LININT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DP_LININT,GstDParamLinInterp))
#define GST_DP_LININT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DP_LININT,GstDParamLinInterp))
#define GST_IS_DP_LININT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DP_LININT))
#define GST_IS_DP_LININT_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DP_LININT))
typedef struct _GstDParamLinInterp GstDParamLinInterp;
typedef struct _GstDParamLinInterpClass GstDParamLinInterpClass;
struct _GstDParamLinInterp {
GstDParam dparam;
};
struct _GstDParamLinInterpClass {
GstDParamClass parent_class;
/* signal callbacks */
};
GType gst_dp_linint_get_type (void);
GstDParam* gst_dp_linint_new (GType type);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_DP_LININT_H__ */
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