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This is a major update to the dparams api - I think it is now much cleaner and the app-side is much easier to use. hi...

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Original commit message from CVS:
This is a major update to the dparams api - I think it is now much cleaner and the app-side is much easier to use.

highlights are:
- GParamSpecs are now used throughout to define dparams
- currently limited to supporting types gfloat, gint and gint64. this should cover 99% of cases and new types can be added in the future
- application-side api is now based almost entirely on setting object properties
- the smoothing dparam is now a subclass of GstDParam
- array-mode is not yet implemented but is not forgotton

time to start documenting
This commit is contained in:
Steve Baker 2002-03-04 18:54:20 +00:00
parent f42c6f238f
commit 3e1e367954
9 changed files with 585 additions and 485 deletions
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2
libs/gst/control/Makefile.am
View file

@ -7,6 +7,7 @@ libgstcontrolinclude_HEADERS = \
control.h \
dparammanager.h \
dparam.h \
dparam_smooth.h \
dparamcommon.h \
dplinearinterp.h
@ -14,6 +15,7 @@ libgstcontrol_la_SOURCES = \
control.c \
dparammanager.c \
dparam.c \
dparam_smooth.c \
dplinearinterp.c
libgstcontrol_la_CFLAGS = $(GST_CFLAGS) -finline-functions -ffast-math

1
libs/gst/control/control.h
View file

@ -28,6 +28,7 @@ extern "C" {
#include <gst/control/dparammanager.h>
#include <gst/control/dparam.h>
#include <gst/control/dparam_smooth.h>
#include <gst/control/dplinearinterp.h>
void gst_control_init (int *argc, char **argv[]);

400
libs/gst/control/dparam.c
View file

@ -29,9 +29,17 @@
static void gst_dparam_class_init (GstDParamClass *klass);
static void gst_dparam_init (GstDParam *dparam);
static void gst_dparam_dispose (GObject *object);
static void gst_dparam_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static void gst_dparam_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_dparam_do_update_realtime (GstDParam *dparam, gint64 timestamp);
static GValue** gst_dparam_get_point_realtime (GstDParam *dparam, gint64 timestamp);
enum {
ARG_0,
ARG_VALUE_FLOAT,
ARG_VALUE_INT,
ARG_VALUE_INT64,
ARG_IS_LOG,
ARG_IS_RATE,
};
GType
gst_dparam_get_type(void) {
@ -64,8 +72,34 @@ gst_dparam_class_init (GstDParamClass *klass)
gobject_class = (GObjectClass*)klass;
dparam_class = (GstDParamClass*)klass;
gstobject_class = (GstObjectClass*) klass;
gobject_class->get_property = gst_dparam_get_property;
gobject_class->set_property = gst_dparam_set_property;
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VALUE_FLOAT,
g_param_spec_float("value_float","Float Value",
"The value that should be changed if gfloat is the type",
(gfloat)G_MININT64, (gfloat)G_MAXINT64, 0.0F, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VALUE_INT,
g_param_spec_int("value_int","Integer Value",
"The value that should be changed if gint is the type",
G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VALUE_INT64,
g_param_spec_int64("value_int64","64 bit Integer Value",
"The value that should be changed if gint64 is the type",
G_MININT64, G_MAXINT64, 0, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_IS_LOG,
g_param_spec_boolean("is_log","Is a Log Value",
"This dparam should be interpreted on a log scale",
FALSE, G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_IS_RATE,
g_param_spec_boolean("is_rate","Is a sample rate proportion",
"This dparam value represents a proportion of the sample rate (eg half of the sample rate will be 0.5)",
FALSE, G_PARAM_READABLE));
gobject_class->dispose = gst_dparam_dispose;
//gstobject_class->save_thyself = gst_dparam_save_thyself;
}
@ -74,10 +108,8 @@ 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 ();
}
@ -94,35 +126,108 @@ 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);
dparam->do_update_func = gst_dparam_do_update_default;
GST_DPARAM_TYPE(dparam) = type;
return dparam;
}
static void
gst_dparam_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstDParam *dparam;
g_return_if_fail(GST_IS_DPARAM(object));
dparam = GST_DPARAM(object);
switch (prop_id) {
case ARG_IS_LOG:
g_value_set_boolean (value, dparam->is_log);
break;
case ARG_IS_RATE:
g_value_set_boolean (value, dparam->is_rate);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_dparam_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstDParam *dparam;
g_return_if_fail(GST_IS_DPARAM(object));
dparam = GST_DPARAM(object);
GST_DPARAM_LOCK(dparam);
switch (prop_id) {
case ARG_VALUE_FLOAT:
GST_DEBUG(GST_CAT_PARAMS, "setting value from %f to %f\n", dparam->value_float, g_value_get_float (value));
dparam->value_float = g_value_get_float (value);
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
break;
case ARG_VALUE_INT:
GST_DEBUG(GST_CAT_PARAMS, "setting value from %d to %d\n", dparam->value_int, g_value_get_int (value));
dparam->value_int = g_value_get_int (value);
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
break;
case ARG_VALUE_INT64:
GST_DEBUG(GST_CAT_PARAMS, "setting value from %lld to %lld\n", dparam->value_int64, g_value_get_int64 (value));
dparam->value_int64 = g_value_get_int (value);
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
break;
default:
break;
}
GST_DPARAM_UNLOCK(dparam);
}
void
gst_dparam_do_update_default (GstDParam *dparam, gint64 timestamp, GValue *value)
{
GST_DPARAM_LOCK(dparam);
g_return_if_fail (G_VALUE_TYPE(value) == GST_DPARAM_TYPE(dparam));
GST_DEBUG(GST_CAT_PARAMS, "updating value for %s(%p)\n",GST_DPARAM_NAME (dparam),dparam);
switch (G_VALUE_TYPE(value)) {
case G_TYPE_FLOAT:
g_value_set_float(value, dparam->value_float);
break;
case G_TYPE_INT:
g_value_set_int(value, dparam->value_int);
break;
case G_TYPE_INT64:
g_value_set_int64(value, dparam->value_int64);
break;
default:
break;
}
GST_DPARAM_READY_FOR_UPDATE(dparam) = FALSE;
GST_DPARAM_UNLOCK(dparam);
}
static void
gst_dparam_dispose (GObject *object)
{
GstDParam *dparam = GST_DPARAM(object);
GValue **point = dparam->point;
guint i = 0;
gchar *dparam_name = g_strdup(GST_DPARAM_NAME(dparam));
g_print("disposing of %s\n", dparam_name);
if (GST_DPARAM_MANAGER(dparam)){
gst_dpman_detach_dparam(GST_DPARAM_MANAGER(dparam), dparam_name);
}
point = dparam->point;
while (point[i]){
g_value_unset(point[i]);
g_free(point[i]);
i++;
}
g_free(dparam_name);
}
/**
@ -132,21 +237,23 @@ gst_dparam_dispose (GObject *object)
*
*/
void
gst_dparam_attach (GstDParam *dparam, GstDParamManager *manager, GValue *value, GstDParamSpec *spec)
gst_dparam_attach (GstDParam *dparam, GstDParamManager *manager, GParamSpec *param_spec, gboolean is_log, gboolean is_rate)
{
g_return_if_fail (dparam != NULL);
g_return_if_fail (GST_IS_DPARAM (dparam));
g_return_if_fail (manager != NULL);
g_return_if_fail (GST_IS_DPMAN (manager));
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;
g_return_if_fail (param_spec != NULL);
g_return_if_fail (G_IS_PARAM_SPEC (param_spec));
GST_DPARAM_NAME(dparam) = g_param_spec_get_name(param_spec);
GST_DPARAM_PARAM_SPEC(dparam) = param_spec;
GST_DPARAM_MANAGER(dparam) = manager;
dparam->is_log = is_log;
dparam->is_rate = is_rate;
GST_DEBUG(GST_CAT_PARAMS, "attaching %s to dparam %p\n",GST_DPARAM_NAME (dparam),dparam);
}
/**
@ -161,248 +268,13 @@ gst_dparam_detach (GstDParam *dparam)
g_return_if_fail (dparam != NULL);
g_return_if_fail (GST_IS_DPARAM (dparam));
GST_DEBUG(GST_CAT_PARAMS, "detaching %s from dparam %p\n",GST_DPARAM_NAME (dparam),dparam);
GST_DPARAM_NAME(dparam) = NULL;
GST_DPARAM_VALUE(dparam) = NULL;
GST_DPARAM_SPEC(dparam) = NULL;
GST_DPARAM_PARAM_SPEC(dparam) = NULL;
GST_DPARAM_MANAGER(dparam) = NULL;
}
/**
* 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;
}

103
libs/gst/control/dparam.h
View file

@ -36,79 +36,48 @@ extern "C" {
#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_MANAGER(dparam) ((dparam)->manager)
#define GST_DPARAM_TYPE(dparam) ((dparam)->type)
#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_IS_LOG(dparam) ((dparam)->is_log)
#define GST_DPARAM_IS_RATE(dparam) ((dparam)->is_rate)
#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_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_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_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;
#define GST_DPARAM_DO_UPDATE(dparam, timestamp, value) \
((dparam->do_update_func)(dparam, timestamp, value))
typedef struct _GstDParamClass GstDParamClass;
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);
typedef void (*GstDParamDoUpdateFunction) (GstDParam *dparam, gint64 timestamp, GValue *value);
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;
gfloat value_float;
gint value_int;
gint64 value_int64;
GstDParamManager *manager;
GstDParamSpec *spec;
GValue **point;
GParamSpec *param_spec;
GType type;
gint64 last_update_timestamp;
gint64 next_update_timestamp;
gint64 default_update_period;
gboolean ready_for_update;
gint64 next_update_timestamp;
gboolean is_log;
gboolean is_rate;
};
struct _GstDParamClass {
@ -117,28 +86,12 @@ struct _GstDParamClass {
/* 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, GstDParamManager *manager, GValue *value, GstDParamSpec *spec);
void gst_dparam_attach (GstDParam *dparam, GstDParamManager *manager, GParamSpec *param_spec, gboolean is_log, gboolean is_rate);
void gst_dparam_detach (GstDParam *dparam);
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);
void gst_dparam_do_update_default (GstDParam *dparam, gint64 timestamp, GValue *value);
#ifdef __cplusplus
}

290
libs/gst/control/dparam_smooth.c Normal file
View file

@ -0,0 +1,290 @@
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
*
* gstdparam_smooth.c: Realtime smoothed 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 <math.h>
#include <string.h>
#include <gst/gstinfo.h>
#include <gst/control/dparam_smooth.h>
#include <gst/control/dparammanager.h>
static void gst_dpsmooth_class_init (GstDParamSmoothClass *klass);
static void gst_dpsmooth_init (GstDParamSmooth *dparam);
static void gst_dpsmooth_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_dpsmooth_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static gint64 gst_dpsmooth_time_since_last_update(GstDParam *dparam, gint64 timestamp);
static void gst_dpsmooth_do_update_float (GstDParam *dparam, gint64 timestamp, GValue *value);
enum {
ARG_0,
ARG_UPDATE_PERIOD,
ARG_SLOPE_TIME,
ARG_SLOPE_DELTA_FLOAT,
ARG_SLOPE_DELTA_INT,
ARG_SLOPE_DELTA_INT64,
};
GType
gst_dpsmooth_get_type(void) {
static GType dpsmooth_type = 0;
if (!dpsmooth_type) {
static const GTypeInfo dpsmooth_info = {
sizeof(GstDParamSmoothClass),
NULL,
NULL,
(GClassInitFunc)gst_dpsmooth_class_init,
NULL,
NULL,
sizeof(GstDParamSmooth),
0,
(GInstanceInitFunc)gst_dpsmooth_init,
};
dpsmooth_type = g_type_register_static(GST_TYPE_DPARAM, "GstDParamSmooth", &dpsmooth_info, 0);
}
return dpsmooth_type;
}
static void
gst_dpsmooth_class_init (GstDParamSmoothClass *klass)
{
GObjectClass *gobject_class;
GstDParamSmoothClass *dpsmooth_class;
GstObjectClass *gstobject_class;
gobject_class = (GObjectClass*)klass;
dpsmooth_class = (GstDParamSmoothClass*)klass;
gstobject_class = (GstObjectClass*) klass;
gobject_class->get_property = gst_dpsmooth_get_property;
gobject_class->set_property = gst_dpsmooth_set_property;
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_UPDATE_PERIOD,
g_param_spec_int64("update_period",
"Update Period (nanoseconds)",
"Number of nanoseconds between updates",
0LL, G_MAXINT64, 2000000LL, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SLOPE_TIME,
g_param_spec_int64("slope_time",
"Slope Time (nanoseconds)",
"The time period to define slope_delta by",
0LL, G_MAXINT64, 10000000LL, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SLOPE_DELTA_FLOAT,
g_param_spec_float("slope_delta_float",
"Slope Delta float",
"The amount a float value can change for a given slope_time",
0.0F, G_MAXFLOAT, 0.2F, G_PARAM_READWRITE));
//gstobject_class->save_thyself = gst_dparam_save_thyself;
}
static void
gst_dpsmooth_init (GstDParamSmooth *dpsmooth)
{
g_return_if_fail (dpsmooth != NULL);
}
/**
* gst_dpsmooth_new:
* @type: the type that this dparam will store
*
* Returns: a new instance of GstDParam
*/
GstDParam*
gst_dpsmooth_new (GType type)
{
GstDParam *dparam;
GstDParamSmooth *dpsmooth;
dpsmooth =g_object_new (gst_dpsmooth_get_type (), NULL);
dparam = GST_DPARAM(dpsmooth);
GST_DPARAM_TYPE(dparam) = type;
switch (type){
case G_TYPE_FLOAT: {
dparam->do_update_func = gst_dpsmooth_do_update_float;
break;
}
default:
/* we don't support this type here */
dparam->do_update_func = gst_dparam_do_update_default;
break;
}
dpsmooth->last_update_timestamp = 0LL;
return dparam;
}
static void
gst_dpsmooth_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstDParam *dparam;
GstDParamSmooth *dpsmooth;
g_return_if_fail(GST_IS_DPSMOOTH(object));
dpsmooth = GST_DPSMOOTH(object);
dparam = GST_DPARAM(object);
GST_DPARAM_LOCK(dparam);
switch (prop_id) {
case ARG_UPDATE_PERIOD:
dpsmooth->update_period = g_value_get_int64 (value);
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
break;
case ARG_SLOPE_TIME:
dpsmooth->slope_time = g_value_get_int64 (value);
GST_DEBUG(GST_CAT_PARAMS, "dpsmooth->slope_time:%lld\n",dpsmooth->slope_time);
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
break;
case ARG_SLOPE_DELTA_FLOAT:
dpsmooth->slope_delta_float = g_value_get_float (value);
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
break;
default:
break;
}
GST_DPARAM_UNLOCK(dparam);
}
static void
gst_dpsmooth_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstDParam *dparam;
GstDParamSmooth *dpsmooth;
g_return_if_fail(GST_IS_DPSMOOTH(object));
dpsmooth = GST_DPSMOOTH(object);
dparam = GST_DPARAM(object);
switch (prop_id) {
case ARG_UPDATE_PERIOD:
g_value_set_int64(value, dpsmooth->update_period);
break;
case ARG_SLOPE_TIME:
g_value_set_int64(value, dpsmooth->slope_time);
break;
case ARG_SLOPE_DELTA_FLOAT:
g_value_set_float (value, dpsmooth->slope_delta_float);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gint64
gst_dpsmooth_time_since_last_update(GstDParam *dparam, gint64 timestamp)
{
gint64 time_diff, last_update_diff, num_update_periods;
GstDParamSmooth *dpsmooth = GST_DPSMOOTH(dparam);
last_update_diff = timestamp - dpsmooth->last_update_timestamp;
time_diff = MIN(dpsmooth->update_period, last_update_diff);
GST_DEBUG(GST_CAT_PARAMS, "last_update_diff:%lld\n",last_update_diff);
GST_DEBUG(GST_CAT_PARAMS, "time_diff:%lld\n",time_diff);
dpsmooth->last_update_timestamp = GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam);
if(GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam) <= timestamp && dpsmooth->update_period > 0LL){
GST_DEBUG(GST_CAT_PARAMS, "dpsmooth->update_period:%lld\n",dpsmooth->update_period);
num_update_periods = last_update_diff / dpsmooth->update_period;
GST_DEBUG(GST_CAT_PARAMS, "num_update_periods:%lld\n",num_update_periods);
GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam) = dpsmooth->update_period * (num_update_periods + 1LL);
}
GST_DEBUG(GST_CAT_PARAMS, "last:%lld current:%lld next:%lld\n",
dpsmooth->last_update_timestamp, timestamp, GST_DPARAM_NEXT_UPDATE_TIMESTAMP(dparam));
return time_diff;
}
static void
gst_dpsmooth_do_update_float (GstDParam *dparam, gint64 timestamp, GValue *value)
{
gint64 time_diff;
gfloat time_ratio;
gfloat current, target, max_change, current_diff, final_val;
GstDParamSmooth *dpsmooth = GST_DPSMOOTH(dparam);
GST_DPARAM_LOCK(dparam);
time_diff = gst_dpsmooth_time_since_last_update(dparam, timestamp);
target = dparam->value_float;
current = g_value_get_float(value);
time_ratio = (gfloat)time_diff / (gfloat)dpsmooth->slope_time;
max_change = time_ratio * dpsmooth->slope_delta_float;
GST_DEBUG(GST_CAT_PARAMS, "target:%f current:%f max_change:%f \n",
target, current, max_change);
if (GST_DPARAM_IS_LOG(dparam)){
if (current == 0.0F){
/* this shouldn't happen, so forget about smoothing and just set the value */
final_val = target;
GST_DPARAM_READY_FOR_UPDATE(dparam) = FALSE;
}
else {
gfloat current_log;
current_log = log(current);
current_diff = ABS(current_log - log(target));
GST_DEBUG(GST_CAT_PARAMS, "current_log:%f\n",current_log);
GST_DEBUG(GST_CAT_PARAMS, "current_diff:%f\n",current_diff);
if (current_diff > max_change)
final_val = (target < current) ? exp(current_log-max_change) : exp(current_log+max_change);
else
final_val = target;
GST_DPARAM_READY_FOR_UPDATE(dparam) = FALSE;
}
}
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) = FALSE;
}
GST_DPARAM_READY_FOR_UPDATE(dparam) = (current_diff > max_change);
g_value_set_float(value, final_val);
GST_DEBUG(GST_CAT_PARAMS, "target:%f current:%f final:%f actual:%f\n", target, current, final_val, g_value_get_float(value));
GST_DPARAM_UNLOCK(dparam);
}

61
libs/gst/control/dparam_smooth.h Normal file
View file

@ -0,0 +1,61 @@
/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
*
* gstdparam_smooth.h: Realtime smoothed 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_DPSMOOTH_H__
#define __GST_DPSMOOTH_H__
#include <gst/control/dparam.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_DPSMOOTH (gst_dpsmooth_get_type ())
#define GST_DPSMOOTH(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DPSMOOTH,GstDParamSmooth))
#define GST_DPSMOOTH_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DPSMOOTH,GstDParamSmooth))
#define GST_IS_DPSMOOTH(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DPSMOOTH))
#define GST_IS_DPSMOOTH_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DPSMOOTH))
typedef struct _GstDParamSmoothClass GstDParamSmoothClass;
typedef struct _GstDParamSmooth GstDParamSmooth;
struct _GstDParamSmooth {
GstDParam dparam;
gint64 last_update_timestamp;
gint64 update_period;
gint64 slope_time;
gfloat slope_delta_float;
};
struct _GstDParamSmoothClass {
GstDParamClass parent_class;
/* signal callbacks */
};
GstDParam* gst_dpsmooth_new (GType type);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_DPSMOOTH_H__ */

1
libs/gst/control/dparamcommon.h
View file

@ -27,7 +27,6 @@ extern "C" {
#endif /* __cplusplus */
typedef struct _GstDParam GstDParam;
typedef struct _GstDParamSpec GstDParamSpec;
typedef struct _GstDParamManager GstDParamManager;
#ifdef __cplusplus

183
libs/gst/control/dparammanager.c
View file

@ -28,8 +28,8 @@ static GHashTable *_element_registry;
static void gst_dpman_class_init (GstDParamManagerClass *klass);
static void gst_dpman_init (GstDParamManager *dpman);
static void gst_dpman_dispose (GObject *object);
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 GstDParamWrapper* gst_dpman_new_wrapper(GstDParamManager *dpman, GParamSpec *param_spec, gboolean is_log, gboolean is_rate, GstDPMUpdateMethod update_method);
static GstDParamWrapper* gst_dpman_get_wrapper(GstDParamManager *dpman, gchar *dparam_name);
static void gst_dpman_state_change (GstElement *element, gint old_state, gint new_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);
@ -137,8 +137,6 @@ gst_dpman_dispose (GObject *object)
/**
* 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
*
@ -146,8 +144,9 @@ gst_dpman_dispose (GObject *object)
*/
gboolean
gst_dpman_add_required_dparam_callback (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
GParamSpec *param_spec,
gboolean is_log,
gboolean is_rate,
GstDPMUpdateFunction update_func,
gpointer update_data)
{
@ -157,11 +156,11 @@ gst_dpman_add_required_dparam_callback (GstDParamManager *dpman,
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);
dpwrap = gst_dpman_new_wrapper(dpman, param_spec, is_log, is_rate, 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));
GST_DEBUG(GST_CAT_PARAMS,"adding required callback dparam '%s'\n", g_param_spec_get_name(param_spec));
dpwrap->update_func = update_func;
dpwrap->update_data = update_data;
@ -172,17 +171,16 @@ gst_dpman_add_required_dparam_callback (GstDParamManager *dpman,
/**
* 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)
GParamSpec *param_spec,
gboolean is_log,
gboolean is_rate,
gpointer update_data)
{
GstDParamWrapper* dpwrap;
@ -190,11 +188,11 @@ gst_dpman_add_required_dparam_direct (GstDParamManager *dpman,
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);
dpwrap = gst_dpman_new_wrapper(dpman, param_spec, is_log, is_rate, 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));
GST_DEBUG(GST_CAT_PARAMS,"adding required direct dparam '%s'\n", g_param_spec_get_name(param_spec));
dpwrap->update_data = update_data;
@ -205,16 +203,16 @@ gst_dpman_add_required_dparam_direct (GstDParamManager *dpman,
* 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)
GParamSpec *param_spec,
gboolean is_log,
gboolean is_rate,
gpointer update_data)
{
GstDParamWrapper* dpwrap;
@ -222,11 +220,11 @@ gst_dpman_add_required_dparam_array (GstDParamManager *dpman,
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);
dpwrap = gst_dpman_new_wrapper(dpman, param_spec, is_log, is_rate, 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));
GST_DEBUG(GST_CAT_PARAMS,"adding required array dparam '%s'\n", g_param_spec_get_name(param_spec));
dpwrap->update_data = update_data;
@ -288,7 +286,7 @@ gst_dpman_attach_dparam (GstDParamManager *dpman, gchar *dparam_name, GstDParam
g_return_val_if_fail(dpwrap->value != NULL, FALSE);
dpwrap->dparam = dparam;
gst_dparam_attach(dparam, dpman, dpwrap->value, dpwrap->spec);
gst_dparam_attach(dparam, dpman, dpwrap->param_spec, dpwrap->is_log, dpwrap->is_rate);
return TRUE;
}
@ -361,12 +359,12 @@ gst_dpman_get_dparam_type (GstDParamManager *dpman, gchar *name)
return G_VALUE_TYPE(dpwrap->value);
}
GstDParamSpec**
/*GstDParamSpec**
gst_dpman_list_dparam_specs(GstDParamManager *dpman)
{
GstDParamWrapper* dpwrap;
GSList *dpwraps;
GstDParamSpec** dparam_specs;
GParamSpec** param_specs;
guint x = 0;
g_return_val_if_fail (dpman != NULL, NULL);
@ -374,18 +372,19 @@ gst_dpman_list_dparam_specs(GstDParamManager *dpman)
dpwraps = GST_DPMAN_DPARAMS_LIST(dpman);
dparam_specs = g_new0(GstDParamSpec*, g_slist_length(dpwraps) + 1);
param_specs = g_new0(GParamSpec*, g_slist_length(dpwraps) + 1);
while (dpwraps){
dpwrap = (GstDParamWrapper*)dpwraps->data;
dparam_specs[x++] = dpwrap->spec;
param_specs[x++] = dpwrap->param_spec;
dpwraps = g_slist_next(dpwraps);
}
return dparam_specs;
return param_specs;
}
*/
GstDParamSpec*
gst_dpman_get_dparam_spec (GstDParamManager *dpman, gchar *dparam_name)
GParamSpec*
gst_dpman_get_param_spec (GstDParamManager *dpman, gchar *dparam_name)
{
GstDParamWrapper* dpwrap;
@ -394,13 +393,7 @@ gst_dpman_get_dparam_spec (GstDParamManager *dpman, gchar *dparam_name)
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)
{
return dpwrap->param_spec;
}
/**
@ -546,30 +539,30 @@ gst_dpman_get_wrapper(GstDParamManager *dpman, gchar *dparam_name)
}
static GstDParamWrapper*
gst_dpman_new_wrapper(GstDParamManager *dpman, gchar *dparam_name, GType type, GstDPMUpdateMethod update_method)
gst_dpman_new_wrapper(GstDParamManager *dpman,
GParamSpec *param_spec,
gboolean is_log,
gboolean is_rate,
GstDPMUpdateMethod update_method)
{
GstDParamWrapper* dpwrap;
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);
g_return_val_if_fail (param_spec != NULL, NULL);
dparam_name = g_strdup(g_param_spec_get_name(param_spec));
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);
g_value_init(dpwrap->value, G_PARAM_SPEC_VALUE_TYPE(param_spec));
dpwrap->param_spec = param_spec;
dpwrap->is_log = is_log;
dpwrap->is_rate = is_rate;
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);
@ -598,9 +591,9 @@ gst_dpman_state_change (GstElement *element, gint old_state, gint new_state, Gst
if (dparam){
GST_DPARAM_READY_FOR_UPDATE(dparam) = TRUE;
if (dparam->spec){
g_value_copy(dparam->spec->default_val, GST_DPARAM_VALUE(dparam));
}
/*if (dparam->spec){
g_value_copy(dparam->spec->default_val, dpwrap->value);
}*/
}
dwraps = g_slist_next(dwraps);
}
@ -625,7 +618,6 @@ gst_dpman_preprocess_synchronous(GstDParamManager *dpman, guint frames, gint64 t
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);
@ -639,46 +631,22 @@ gst_dpman_preprocess_synchronous(GstDParamManager *dpman, guint frames, gint64 t
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_DPARAM_DO_UPDATE(dparam, timestamp, dpwrap->value);
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);
case G_TYPE_INT64:
*(gint64*)dpwrap->update_data = g_value_get_int64(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;
}
@ -686,6 +654,7 @@ gst_dpman_preprocess_synchronous(GstDParamManager *dpman, guint frames, gint64 t
// callback method - call the element's callback so it can do what it likes
case GST_DPMAN_CALLBACK:
GST_DPARAM_DO_UPDATE(dparam, timestamp, dpwrap->value);
GST_DEBUG(GST_CAT_PARAMS, "doing callback update\n");
GST_DPMAN_DO_UPDATE(dpwrap);
break;
@ -695,65 +664,11 @@ gst_dpman_preprocess_synchronous(GstDParamManager *dpman, guint frames, gint64 t
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;
case G_TYPE_INT64:
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;

29
libs/gst/control/dparammanager.h
View file

@ -93,12 +93,14 @@ struct _GstDPMMode {
};
struct _GstDParamWrapper {
GstDParamSpec* spec;
GParamSpec* param_spec;
GValue *value;
GstDParam *dparam;
GstDPMUpdateMethod update_method;
gpointer update_data;
GstDPMUpdateFunction update_func;
gboolean is_log;
gboolean is_rate;
};
#define GST_DPMAN_PREPROCESSFUNC(dpman) (((dpman)->mode)->preprocessfunc)
@ -125,26 +127,31 @@ 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);
GParamSpec *param_spec,
gboolean is_log,
gboolean is_rate,
GstDPMUpdateFunction update_func,
gpointer update_data);
gboolean gst_dpman_add_required_dparam_direct (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
GParamSpec *param_spec,
gboolean is_log,
gboolean is_rate,
gpointer update_data);
gboolean gst_dpman_add_required_dparam_array (GstDParamManager *dpman,
gchar *dparam_name,
GType type,
GParamSpec *param_spec,
gboolean is_log,
gboolean is_rate,
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_detach_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);
GParamSpec** gst_dpman_list_param_specs(GstDParamManager *dpman);
GParamSpec* gst_dpman_get_param_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);