gstreamer/libs/gst/control/dparam_smooth.c
Thomas Vander Stichele 7baa6c18e7 don't mix tabs and spaces
Original commit message from CVS:
don't mix tabs and spaces
2004-03-15 19:27:17 +00:00

464 lines
14 KiB
C

/* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <math.h>
#include <string.h>
#include <gst/gstinfo.h>
#include "dparam_smooth.h"
#include "dparammanager.h"
GST_DEBUG_CATEGORY_EXTERN (_gst_control_debug);
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 void gst_dpsmooth_do_update_float (GstDParam * dparam, gint64 timestamp,
GValue * value, GstDParamUpdateInfo update_info);
static void gst_dpsmooth_value_changed_float (GstDParam * dparam);
static void gst_dpsmooth_do_update_double (GstDParam * dparam, gint64 timestamp,
GValue * value, GstDParamUpdateInfo update_info);
static void gst_dpsmooth_value_changed_double (GstDParam * dparam);
enum
{
ARG_0,
ARG_UPDATE_PERIOD,
ARG_SLOPE_TIME,
ARG_SLOPE_DELTA_FLOAT,
ARG_SLOPE_DELTA_DOUBLE,
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));
g_object_class_install_property (G_OBJECT_CLASS (klass),
ARG_SLOPE_DELTA_DOUBLE,
g_param_spec_double ("slope_delta_double", "Slope Delta double",
"The amount a double value can change for a given slope_time",
0.0, G_MAXDOUBLE, 0.2, 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;
g_signal_connect (G_OBJECT (dpsmooth), "value_changed",
G_CALLBACK (gst_dpsmooth_value_changed_float), NULL);
break;
}
case G_TYPE_DOUBLE:{
dparam->do_update_func = gst_dpsmooth_do_update_double;
g_signal_connect (G_OBJECT (dpsmooth), "value_changed",
G_CALLBACK (gst_dpsmooth_value_changed_double), NULL);
break;
}
default:
/* we don't support this type here */
dparam->do_update_func = gst_dparam_do_update_default;
break;
}
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 ("dpsmooth->slope_time:%"
G_GINT64_FORMAT, 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;
case ARG_SLOPE_DELTA_DOUBLE:
dpsmooth->slope_delta_double = g_value_get_double (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;
case ARG_SLOPE_DELTA_DOUBLE:
g_value_set_double (value, dpsmooth->slope_delta_double);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_dpsmooth_value_changed_float (GstDParam * dparam)
{
GstDParamSmooth *dpsmooth;
gfloat time_ratio;
g_return_if_fail (GST_IS_DPSMOOTH (dparam));
dpsmooth = GST_DPSMOOTH (dparam);
if (GST_DPARAM_IS_LOG (dparam)) {
dparam->value_float = log (dparam->value_float);
}
dpsmooth->start_float = dpsmooth->current_float;
dpsmooth->diff_float = dparam->value_float - dpsmooth->start_float;
time_ratio = ABS (dpsmooth->diff_float) / dpsmooth->slope_delta_float;
dpsmooth->duration_interp =
(gint64) (time_ratio * (gfloat) dpsmooth->slope_time);
dpsmooth->need_interp_times = TRUE;
GST_DEBUG ("%f to %f ratio:%f duration:%"
G_GINT64_FORMAT "\n",
dpsmooth->start_float, dparam->value_float, time_ratio,
dpsmooth->duration_interp);
}
static void
gst_dpsmooth_do_update_float (GstDParam * dparam, gint64 timestamp,
GValue * value, GstDParamUpdateInfo update_info)
{
gfloat time_ratio;
GstDParamSmooth *dpsmooth = GST_DPSMOOTH (dparam);
GST_DPARAM_LOCK (dparam);
if (dpsmooth->need_interp_times) {
dpsmooth->start_interp = timestamp;
dpsmooth->end_interp = timestamp + dpsmooth->duration_interp;
dpsmooth->need_interp_times = FALSE;
}
if ((update_info == GST_DPARAM_UPDATE_FIRST)
|| (timestamp >= dpsmooth->end_interp)) {
if (GST_DPARAM_IS_LOG (dparam)) {
g_value_set_float (value, exp (dparam->value_float));
} else {
g_value_set_float (value, dparam->value_float);
}
dpsmooth->current_float = dparam->value_float;
GST_DEBUG ("interp finished at %" G_GINT64_FORMAT, timestamp);
GST_DPARAM_LAST_UPDATE_TIMESTAMP (dparam) = timestamp;
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) = timestamp;
GST_DPARAM_READY_FOR_UPDATE (dparam) = FALSE;
GST_DPARAM_UNLOCK (dparam);
return;
}
if (timestamp <= dpsmooth->start_interp) {
if (GST_DPARAM_IS_LOG (dparam)) {
g_value_set_float (value, exp (dpsmooth->start_float));
} else {
g_value_set_float (value, dpsmooth->start_float);
}
GST_DPARAM_LAST_UPDATE_TIMESTAMP (dparam) = timestamp;
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) =
dpsmooth->start_interp + dpsmooth->update_period;
GST_DEBUG ("interp started at %" G_GINT64_FORMAT, timestamp);
GST_DPARAM_UNLOCK (dparam);
return;
}
time_ratio =
(gfloat) (timestamp -
dpsmooth->start_interp) / (gfloat) dpsmooth->duration_interp;
GST_DEBUG ("start:%" G_GINT64_FORMAT " current:%" G_GINT64_FORMAT " end:%"
G_GINT64_FORMAT " ratio%f", dpsmooth->start_interp, timestamp,
dpsmooth->end_interp, time_ratio);
GST_DEBUG ("pre start:%f current:%f target:%f", dpsmooth->start_float,
dpsmooth->current_float, dparam->value_float);
dpsmooth->current_float =
dpsmooth->start_float + (dpsmooth->diff_float * time_ratio);
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) =
timestamp + dpsmooth->update_period;
if (GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) > dpsmooth->end_interp) {
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) = dpsmooth->end_interp;
}
GST_DPARAM_LAST_UPDATE_TIMESTAMP (dparam) = timestamp;
if (GST_DPARAM_IS_LOG (dparam)) {
g_value_set_float (value, exp (dpsmooth->current_float));
} else {
g_value_set_float (value, dpsmooth->current_float);
}
GST_DEBUG ("post start:%f current:%f target:%f", dpsmooth->start_float,
dpsmooth->current_float, dparam->value_float);
GST_DPARAM_UNLOCK (dparam);
}
static void
gst_dpsmooth_value_changed_double (GstDParam * dparam)
{
GstDParamSmooth *dpsmooth;
gdouble time_ratio;
g_return_if_fail (GST_IS_DPSMOOTH (dparam));
dpsmooth = GST_DPSMOOTH (dparam);
if (GST_DPARAM_IS_LOG (dparam)) {
dparam->value_double = log (dparam->value_double);
}
dpsmooth->start_double = dpsmooth->current_double;
dpsmooth->diff_double = dparam->value_double - dpsmooth->start_double;
time_ratio = ABS (dpsmooth->diff_double) / dpsmooth->slope_delta_double;
dpsmooth->duration_interp =
(gint64) (time_ratio * (gdouble) dpsmooth->slope_time);
dpsmooth->need_interp_times = TRUE;
GST_DEBUG ("%f to %f ratio:%f duration:%"
G_GINT64_FORMAT "\n",
dpsmooth->start_double, dparam->value_double, time_ratio,
dpsmooth->duration_interp);
}
static void
gst_dpsmooth_do_update_double (GstDParam * dparam, gint64 timestamp,
GValue * value, GstDParamUpdateInfo update_info)
{
gdouble time_ratio;
GstDParamSmooth *dpsmooth = GST_DPSMOOTH (dparam);
GST_DPARAM_LOCK (dparam);
if (dpsmooth->need_interp_times) {
dpsmooth->start_interp = timestamp;
dpsmooth->end_interp = timestamp + dpsmooth->duration_interp;
dpsmooth->need_interp_times = FALSE;
}
if ((update_info == GST_DPARAM_UPDATE_FIRST)
|| (timestamp >= dpsmooth->end_interp)) {
if (GST_DPARAM_IS_LOG (dparam)) {
g_value_set_double (value, exp (dparam->value_double));
} else {
g_value_set_double (value, dparam->value_double);
}
dpsmooth->current_double = dparam->value_double;
GST_DEBUG ("interp finished at %" G_GINT64_FORMAT, timestamp);
GST_DPARAM_LAST_UPDATE_TIMESTAMP (dparam) = timestamp;
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) = timestamp;
GST_DPARAM_READY_FOR_UPDATE (dparam) = FALSE;
GST_DPARAM_UNLOCK (dparam);
return;
}
if (timestamp <= dpsmooth->start_interp) {
if (GST_DPARAM_IS_LOG (dparam)) {
g_value_set_double (value, exp (dpsmooth->start_double));
} else {
g_value_set_double (value, dpsmooth->start_double);
}
GST_DPARAM_LAST_UPDATE_TIMESTAMP (dparam) = timestamp;
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) =
dpsmooth->start_interp + dpsmooth->update_period;
GST_DEBUG ("interp started at %" G_GINT64_FORMAT, timestamp);
GST_DPARAM_UNLOCK (dparam);
return;
}
time_ratio =
(gdouble) (timestamp -
dpsmooth->start_interp) / (gdouble) dpsmooth->duration_interp;
GST_DEBUG ("start:%" G_GINT64_FORMAT " current:%" G_GINT64_FORMAT " end:%"
G_GINT64_FORMAT " ratio%f", dpsmooth->start_interp, timestamp,
dpsmooth->end_interp, time_ratio);
GST_DEBUG ("pre start:%f current:%f target:%f", dpsmooth->start_double,
dpsmooth->current_double, dparam->value_double);
dpsmooth->current_double =
dpsmooth->start_double + (dpsmooth->diff_double * time_ratio);
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) =
timestamp + dpsmooth->update_period;
if (GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) > dpsmooth->end_interp) {
GST_DPARAM_NEXT_UPDATE_TIMESTAMP (dparam) = dpsmooth->end_interp;
}
GST_DPARAM_LAST_UPDATE_TIMESTAMP (dparam) = timestamp;
if (GST_DPARAM_IS_LOG (dparam)) {
g_value_set_double (value, exp (dpsmooth->current_double));
} else {
g_value_set_double (value, dpsmooth->current_double);
}
GST_DEBUG ("post start:%f current:%f target:%f", dpsmooth->start_double,
dpsmooth->current_double, dparam->value_double);
GST_DPARAM_UNLOCK (dparam);
}