mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-14 13:21:28 +00:00
a789096c04
This touches three areas of code, removes unused variables and discards return values from two functions with (void). https://bugzilla.gnome.org/show_bug.cgi?id=645267
811 lines
28 KiB
C
811 lines
28 KiB
C
/* GStreamer
|
|
*
|
|
* Copyright (C) <2005> Stefan Kost <ensonic at users dot sf dot net>
|
|
* Copyright (C) 2007-2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
|
|
*
|
|
* gstinterpolation.c: Interpolation methods for dynamic properties
|
|
*
|
|
* 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 "gstinterpolationcontrolsource.h"
|
|
#include "gstinterpolationcontrolsourceprivate.h"
|
|
|
|
#define GST_CAT_DEFAULT controller_debug
|
|
GST_DEBUG_CATEGORY_EXTERN (GST_CAT_DEFAULT);
|
|
|
|
#define EMPTY(x) (x)
|
|
|
|
/* common helper */
|
|
|
|
static gint
|
|
gst_control_point_find (gconstpointer p1, gconstpointer p2)
|
|
{
|
|
GstClockTime ct1 = ((GstControlPoint *) p1)->timestamp;
|
|
GstClockTime ct2 = *(GstClockTime *) p2;
|
|
|
|
return ((ct1 < ct2) ? -1 : ((ct1 == ct2) ? 0 : 1));
|
|
}
|
|
|
|
/*
|
|
* gst_interpolation_control_source_find_control_point_iter:
|
|
* @self: the interpolation control source to search in
|
|
* @timestamp: the search key
|
|
*
|
|
* Find last value before given timestamp in control point list.
|
|
* If all values in the control point list come after the given
|
|
* timestamp or no values exist, %NULL is returned.
|
|
*
|
|
* Returns: the found #GSequenceIter or %NULL
|
|
*/
|
|
static GSequenceIter *gst_interpolation_control_source_find_control_point_iter
|
|
(GstInterpolationControlSource * self, GstClockTime timestamp)
|
|
{
|
|
GSequenceIter *iter;
|
|
|
|
if (!self->priv->values)
|
|
return NULL;
|
|
|
|
iter =
|
|
g_sequence_search (self->priv->values, ×tamp,
|
|
(GCompareDataFunc) gst_control_point_find, NULL);
|
|
|
|
/* g_sequence_search() returns the iter where timestamp
|
|
* would be inserted, i.e. the iter > timestamp, so
|
|
* we need to get the previous one. And of course, if
|
|
* there is no previous one, we return NULL. */
|
|
if (g_sequence_iter_is_begin (iter))
|
|
return NULL;
|
|
|
|
return g_sequence_iter_prev (iter);
|
|
}
|
|
|
|
/* steps-like (no-)interpolation, default */
|
|
/* just returns the value for the most recent key-frame */
|
|
static inline const GValue *
|
|
_interpolate_none_get (GstInterpolationControlSource * self,
|
|
GSequenceIter * iter)
|
|
{
|
|
const GValue *ret;
|
|
|
|
if (iter) {
|
|
GstControlPoint *cp = g_sequence_get (iter);
|
|
|
|
ret = &cp->value;
|
|
} else {
|
|
ret = &self->priv->default_value;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#define DEFINE_NONE_GET_FUNC_COMPARABLE(type) \
|
|
static inline const GValue * \
|
|
_interpolate_none_get_##type (GstInterpolationControlSource *self, GSequenceIter *iter) \
|
|
{ \
|
|
const GValue *ret; \
|
|
\
|
|
if (iter) { \
|
|
GstControlPoint *cp = g_sequence_get (iter); \
|
|
g##type ret_val = g_value_get_##type (&cp->value); \
|
|
\
|
|
if (g_value_get_##type (&self->priv->minimum_value) > ret_val) \
|
|
ret = &self->priv->minimum_value; \
|
|
else if (g_value_get_##type (&self->priv->maximum_value) < ret_val) \
|
|
ret = &self->priv->maximum_value; \
|
|
else \
|
|
ret = &cp->value; \
|
|
} else { \
|
|
ret = &self->priv->default_value; \
|
|
} \
|
|
return ret; \
|
|
}
|
|
|
|
#define DEFINE_NONE_GET(type,ctype,get_func) \
|
|
static gboolean \
|
|
interpolate_none_get_##type (GstInterpolationControlSource *self, GstClockTime timestamp, GValue *value) \
|
|
{ \
|
|
const GValue *ret; \
|
|
GSequenceIter *iter; \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
\
|
|
iter = gst_interpolation_control_source_find_control_point_iter (self, timestamp); \
|
|
ret = get_func (self, iter); \
|
|
g_value_copy (ret, value); \
|
|
g_mutex_unlock (self->lock); \
|
|
return TRUE; \
|
|
} \
|
|
\
|
|
static gboolean \
|
|
interpolate_none_get_##type##_value_array (GstInterpolationControlSource *self, \
|
|
GstClockTime timestamp, GstValueArray * value_array) \
|
|
{ \
|
|
gint i; \
|
|
GstClockTime ts = timestamp; \
|
|
GstClockTime next_ts = 0; \
|
|
ctype *values = (ctype *) value_array->values; \
|
|
const GValue *ret_val = NULL; \
|
|
ctype ret = 0; \
|
|
GSequenceIter *iter1 = NULL, *iter2 = NULL; \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
for(i = 0; i < value_array->nbsamples; i++) { \
|
|
if (!ret_val || ts >= next_ts) { \
|
|
iter1 = gst_interpolation_control_source_find_control_point_iter (self, ts); \
|
|
if (!iter1) { \
|
|
if (G_LIKELY (self->priv->values)) \
|
|
iter2 = g_sequence_get_begin_iter (self->priv->values); \
|
|
else \
|
|
iter2 = NULL; \
|
|
} else { \
|
|
iter2 = g_sequence_iter_next (iter1); \
|
|
} \
|
|
\
|
|
if (iter2 && !g_sequence_iter_is_end (iter2)) { \
|
|
GstControlPoint *cp; \
|
|
\
|
|
cp = g_sequence_get (iter2); \
|
|
next_ts = cp->timestamp; \
|
|
} else { \
|
|
next_ts = GST_CLOCK_TIME_NONE; \
|
|
} \
|
|
\
|
|
ret_val = get_func (self, iter1); \
|
|
ret = g_value_get_##type (ret_val); \
|
|
} \
|
|
*values = ret; \
|
|
ts += value_array->sample_interval; \
|
|
values++; \
|
|
} \
|
|
g_mutex_unlock (self->lock); \
|
|
return TRUE; \
|
|
}
|
|
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (int);
|
|
DEFINE_NONE_GET (int, gint, _interpolate_none_get_int);
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (uint);
|
|
DEFINE_NONE_GET (uint, guint, _interpolate_none_get_uint);
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (long);
|
|
DEFINE_NONE_GET (long, glong, _interpolate_none_get_long);
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (ulong);
|
|
DEFINE_NONE_GET (ulong, gulong, _interpolate_none_get_ulong);
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (int64);
|
|
DEFINE_NONE_GET (int64, gint64, _interpolate_none_get_int64);
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (uint64);
|
|
DEFINE_NONE_GET (uint64, guint64, _interpolate_none_get_uint64);
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (float);
|
|
DEFINE_NONE_GET (float, gfloat, _interpolate_none_get_float);
|
|
DEFINE_NONE_GET_FUNC_COMPARABLE (double);
|
|
DEFINE_NONE_GET (double, gdouble, _interpolate_none_get_double);
|
|
|
|
DEFINE_NONE_GET (boolean, gboolean, _interpolate_none_get);
|
|
DEFINE_NONE_GET (enum, gint, _interpolate_none_get);
|
|
DEFINE_NONE_GET (string, const gchar *, _interpolate_none_get);
|
|
|
|
static GstInterpolateMethod interpolate_none = {
|
|
(GstControlSourceGetValue) interpolate_none_get_int,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_int_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_uint,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_uint_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_long,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_long_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_ulong,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_ulong_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_int64,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_int64_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_uint64,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_uint64_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_float,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_float_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_double,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_double_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_boolean,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_boolean_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_enum,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_enum_value_array,
|
|
(GstControlSourceGetValue) interpolate_none_get_string,
|
|
(GstControlSourceGetValueArray) interpolate_none_get_string_value_array
|
|
};
|
|
|
|
/* returns the default value of the property, except for times with specific values */
|
|
/* needed for one-shot events, such as notes and triggers */
|
|
static inline const GValue *
|
|
_interpolate_trigger_get (GstInterpolationControlSource * self,
|
|
GSequenceIter * iter, GstClockTime timestamp)
|
|
{
|
|
GstControlPoint *cp;
|
|
|
|
/* check if there is a value at the registered timestamp */
|
|
if (iter) {
|
|
cp = g_sequence_get (iter);
|
|
if (timestamp == cp->timestamp) {
|
|
return &cp->value;
|
|
}
|
|
}
|
|
if (self->priv->nvalues > 0)
|
|
return &self->priv->default_value;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
#define DEFINE_TRIGGER_GET_FUNC_COMPARABLE(type) \
|
|
static inline const GValue * \
|
|
_interpolate_trigger_get_##type (GstInterpolationControlSource *self, GSequenceIter *iter, GstClockTime timestamp) \
|
|
{ \
|
|
GstControlPoint *cp; \
|
|
\
|
|
/* check if there is a value at the registered timestamp */ \
|
|
if (iter) { \
|
|
cp = g_sequence_get (iter); \
|
|
if (timestamp == cp->timestamp) { \
|
|
g##type ret = g_value_get_##type (&cp->value); \
|
|
if (g_value_get_##type (&self->priv->minimum_value) > ret) \
|
|
return &self->priv->minimum_value; \
|
|
else if (g_value_get_##type (&self->priv->maximum_value) < ret) \
|
|
return &self->priv->maximum_value; \
|
|
else \
|
|
return &cp->value; \
|
|
} \
|
|
} \
|
|
\
|
|
if (self->priv->nvalues > 0) \
|
|
return &self->priv->default_value; \
|
|
else \
|
|
return NULL; \
|
|
}
|
|
|
|
#define DEFINE_TRIGGER_GET(type, ctype, get_func) \
|
|
static gboolean \
|
|
interpolate_trigger_get_##type (GstInterpolationControlSource *self, GstClockTime timestamp, GValue *value) \
|
|
{ \
|
|
const GValue *ret; \
|
|
GSequenceIter *iter; \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
\
|
|
iter = gst_interpolation_control_source_find_control_point_iter (self, timestamp); \
|
|
ret = get_func (self, iter, timestamp); \
|
|
if (!ret) { \
|
|
g_mutex_unlock (self->lock); \
|
|
return FALSE; \
|
|
} \
|
|
\
|
|
g_value_copy (ret, value); \
|
|
g_mutex_unlock (self->lock); \
|
|
return TRUE; \
|
|
} \
|
|
\
|
|
static gboolean \
|
|
interpolate_trigger_get_##type##_value_array (GstInterpolationControlSource *self, \
|
|
GstClockTime timestamp, GstValueArray * value_array) \
|
|
{ \
|
|
gint i; \
|
|
GstClockTime ts = timestamp; \
|
|
GstClockTime next_ts = 0; \
|
|
ctype *values = (ctype *) value_array->values; \
|
|
const GValue *ret_val = NULL; \
|
|
ctype ret = 0; \
|
|
GSequenceIter *iter1 = NULL, *iter2 = NULL; \
|
|
gboolean triggered = FALSE; \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
for(i = 0; i < value_array->nbsamples; i++) { \
|
|
if (!ret_val || ts >= next_ts) { \
|
|
iter1 = gst_interpolation_control_source_find_control_point_iter (self, ts); \
|
|
if (!iter1) { \
|
|
if (G_LIKELY (self->priv->values)) \
|
|
iter2 = g_sequence_get_begin_iter (self->priv->values); \
|
|
else \
|
|
iter2 = NULL; \
|
|
} else { \
|
|
iter2 = g_sequence_iter_next (iter1); \
|
|
} \
|
|
\
|
|
if (iter2 && !g_sequence_iter_is_end (iter2)) { \
|
|
GstControlPoint *cp; \
|
|
\
|
|
cp = g_sequence_get (iter2); \
|
|
next_ts = cp->timestamp; \
|
|
} else { \
|
|
next_ts = GST_CLOCK_TIME_NONE; \
|
|
} \
|
|
\
|
|
ret_val = get_func (self, iter1, ts); \
|
|
if (!ret_val) { \
|
|
g_mutex_unlock (self->lock); \
|
|
return FALSE; \
|
|
} \
|
|
ret = g_value_get_##type (ret_val); \
|
|
triggered = TRUE; \
|
|
} else if (triggered) { \
|
|
ret_val = get_func (self, iter1, ts); \
|
|
if (!ret_val) { \
|
|
g_mutex_unlock (self->lock); \
|
|
return FALSE; \
|
|
} \
|
|
ret = g_value_get_##type (ret_val); \
|
|
triggered = FALSE; \
|
|
} \
|
|
*values = ret; \
|
|
ts += value_array->sample_interval; \
|
|
values++; \
|
|
} \
|
|
g_mutex_unlock (self->lock); \
|
|
return TRUE; \
|
|
}
|
|
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (int);
|
|
DEFINE_TRIGGER_GET (int, gint, _interpolate_trigger_get_int);
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (uint);
|
|
DEFINE_TRIGGER_GET (uint, guint, _interpolate_trigger_get_uint);
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (long);
|
|
DEFINE_TRIGGER_GET (long, glong, _interpolate_trigger_get_long);
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (ulong);
|
|
DEFINE_TRIGGER_GET (ulong, gulong, _interpolate_trigger_get_ulong);
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (int64);
|
|
DEFINE_TRIGGER_GET (int64, gint64, _interpolate_trigger_get_int64);
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (uint64);
|
|
DEFINE_TRIGGER_GET (uint64, guint64, _interpolate_trigger_get_uint64);
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (float);
|
|
DEFINE_TRIGGER_GET (float, gfloat, _interpolate_trigger_get_float);
|
|
DEFINE_TRIGGER_GET_FUNC_COMPARABLE (double);
|
|
DEFINE_TRIGGER_GET (double, gdouble, _interpolate_trigger_get_double);
|
|
|
|
DEFINE_TRIGGER_GET (boolean, gboolean, _interpolate_trigger_get);
|
|
DEFINE_TRIGGER_GET (enum, gint, _interpolate_trigger_get);
|
|
DEFINE_TRIGGER_GET (string, const gchar *, _interpolate_trigger_get);
|
|
|
|
static GstInterpolateMethod interpolate_trigger = {
|
|
(GstControlSourceGetValue) interpolate_trigger_get_int,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_int_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_uint,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_uint_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_long,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_long_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_ulong,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_ulong_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_int64,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_int64_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_uint64,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_uint64_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_float,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_float_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_double,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_double_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_boolean,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_boolean_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_enum,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_enum_value_array,
|
|
(GstControlSourceGetValue) interpolate_trigger_get_string,
|
|
(GstControlSourceGetValueArray) interpolate_trigger_get_string_value_array
|
|
};
|
|
|
|
/* linear interpolation */
|
|
/* smoothes inbetween values */
|
|
#define DEFINE_LINEAR_GET(vtype, round, convert) \
|
|
static inline void \
|
|
_interpolate_linear_internal_##vtype (GstClockTime timestamp1, g##vtype value1, GstClockTime timestamp2, g##vtype value2, GstClockTime timestamp, g##vtype min, g##vtype max, g##vtype *ret) \
|
|
{ \
|
|
if (GST_CLOCK_TIME_IS_VALID (timestamp2)) { \
|
|
gdouble slope; \
|
|
\
|
|
slope = ((gdouble) convert (value2) - (gdouble) convert (value1)) / gst_guint64_to_gdouble (timestamp2 - timestamp1); \
|
|
\
|
|
if (round) \
|
|
*ret = (g##vtype) (convert (value1) + gst_guint64_to_gdouble (timestamp - timestamp1) * slope + 0.5); \
|
|
else \
|
|
*ret = (g##vtype) (convert (value1) + gst_guint64_to_gdouble (timestamp - timestamp1) * slope); \
|
|
} else { \
|
|
*ret = value1; \
|
|
} \
|
|
*ret = CLAMP (*ret, min, max); \
|
|
} \
|
|
\
|
|
static gboolean \
|
|
interpolate_linear_get_##vtype (GstInterpolationControlSource *self, GstClockTime timestamp, GValue *value) \
|
|
{ \
|
|
g##vtype ret, min, max; \
|
|
GSequenceIter *iter; \
|
|
GstControlPoint *cp1, *cp2 = NULL, cp = {0, }; \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
\
|
|
min = g_value_get_##vtype (&self->priv->minimum_value); \
|
|
max = g_value_get_##vtype (&self->priv->maximum_value); \
|
|
\
|
|
iter = gst_interpolation_control_source_find_control_point_iter (self, timestamp); \
|
|
if (iter) { \
|
|
cp1 = g_sequence_get (iter); \
|
|
iter = g_sequence_iter_next (iter); \
|
|
} else { \
|
|
cp.timestamp = G_GUINT64_CONSTANT(0); \
|
|
g_value_init (&cp.value, self->priv->type); \
|
|
g_value_copy (&self->priv->default_value, &cp.value); \
|
|
cp1 = &cp; \
|
|
if (G_LIKELY (self->priv->values)) \
|
|
iter = g_sequence_get_begin_iter (self->priv->values); \
|
|
} \
|
|
if (iter && !g_sequence_iter_is_end (iter)) \
|
|
cp2 = g_sequence_get (iter); \
|
|
\
|
|
_interpolate_linear_internal_##vtype (cp1->timestamp, g_value_get_##vtype (&cp1->value), (cp2 ? cp2->timestamp : GST_CLOCK_TIME_NONE), (cp2 ? g_value_get_##vtype (&cp2->value) : 0), timestamp, min, max, &ret); \
|
|
g_value_set_##vtype (value, ret); \
|
|
g_mutex_unlock (self->lock); \
|
|
if (cp1 == &cp) \
|
|
g_value_unset (&cp.value); \
|
|
return TRUE; \
|
|
} \
|
|
\
|
|
static gboolean \
|
|
interpolate_linear_get_##vtype##_value_array (GstInterpolationControlSource *self, \
|
|
GstClockTime timestamp, GstValueArray * value_array) \
|
|
{ \
|
|
gint i; \
|
|
GstClockTime ts = timestamp; \
|
|
GstClockTime next_ts = 0; \
|
|
g##vtype *values = (g##vtype *) value_array->values; \
|
|
GSequenceIter *iter1, *iter2 = NULL; \
|
|
GstControlPoint *cp1 = NULL, *cp2 = NULL, cp = {0, }; \
|
|
g##vtype val1 = 0, val2 = 0, min, max; \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
\
|
|
cp.timestamp = G_GUINT64_CONSTANT(0); \
|
|
g_value_init (&cp.value, self->priv->type); \
|
|
g_value_copy (&self->priv->default_value, &cp.value); \
|
|
\
|
|
min = g_value_get_##vtype (&self->priv->minimum_value); \
|
|
max = g_value_get_##vtype (&self->priv->maximum_value); \
|
|
\
|
|
for(i = 0; i < value_array->nbsamples; i++) { \
|
|
if (timestamp >= next_ts) { \
|
|
iter1 = gst_interpolation_control_source_find_control_point_iter (self, ts); \
|
|
if (!iter1) { \
|
|
cp1 = &cp; \
|
|
if (G_LIKELY (self->priv->values)) \
|
|
iter2 = g_sequence_get_begin_iter (self->priv->values); \
|
|
else \
|
|
iter2 = NULL; \
|
|
} else { \
|
|
cp1 = g_sequence_get (iter1); \
|
|
iter2 = g_sequence_iter_next (iter1); \
|
|
} \
|
|
\
|
|
if (iter2 && !g_sequence_iter_is_end (iter2)) { \
|
|
cp2 = g_sequence_get (iter2); \
|
|
next_ts = cp2->timestamp; \
|
|
} else { \
|
|
next_ts = GST_CLOCK_TIME_NONE; \
|
|
} \
|
|
val1 = g_value_get_##vtype (&cp1->value); \
|
|
if (cp2) \
|
|
val2 = g_value_get_##vtype (&cp2->value); \
|
|
} \
|
|
_interpolate_linear_internal_##vtype (cp1->timestamp, val1, (cp2 ? cp2->timestamp : GST_CLOCK_TIME_NONE), (cp2 ? val2 : 0), ts, min, max, values); \
|
|
ts += value_array->sample_interval; \
|
|
values++; \
|
|
} \
|
|
g_mutex_unlock (self->lock); \
|
|
g_value_unset (&cp.value); \
|
|
return TRUE; \
|
|
}
|
|
|
|
DEFINE_LINEAR_GET (int, TRUE, EMPTY);
|
|
DEFINE_LINEAR_GET (uint, TRUE, EMPTY);
|
|
DEFINE_LINEAR_GET (long, TRUE, EMPTY);
|
|
DEFINE_LINEAR_GET (ulong, TRUE, EMPTY);
|
|
DEFINE_LINEAR_GET (int64, TRUE, EMPTY);
|
|
DEFINE_LINEAR_GET (uint64, TRUE, gst_guint64_to_gdouble);
|
|
DEFINE_LINEAR_GET (float, FALSE, EMPTY);
|
|
DEFINE_LINEAR_GET (double, FALSE, EMPTY);
|
|
|
|
static GstInterpolateMethod interpolate_linear = {
|
|
(GstControlSourceGetValue) interpolate_linear_get_int,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_int_value_array,
|
|
(GstControlSourceGetValue) interpolate_linear_get_uint,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_uint_value_array,
|
|
(GstControlSourceGetValue) interpolate_linear_get_long,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_long_value_array,
|
|
(GstControlSourceGetValue) interpolate_linear_get_ulong,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_ulong_value_array,
|
|
(GstControlSourceGetValue) interpolate_linear_get_int64,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_int64_value_array,
|
|
(GstControlSourceGetValue) interpolate_linear_get_uint64,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_uint64_value_array,
|
|
(GstControlSourceGetValue) interpolate_linear_get_float,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_float_value_array,
|
|
(GstControlSourceGetValue) interpolate_linear_get_double,
|
|
(GstControlSourceGetValueArray) interpolate_linear_get_double_value_array,
|
|
(GstControlSourceGetValue) NULL,
|
|
(GstControlSourceGetValueArray) NULL,
|
|
(GstControlSourceGetValue) NULL,
|
|
(GstControlSourceGetValueArray) NULL,
|
|
(GstControlSourceGetValue) NULL,
|
|
(GstControlSourceGetValueArray) NULL
|
|
};
|
|
|
|
/* square interpolation */
|
|
|
|
/* cubic interpolation */
|
|
|
|
/* The following functions implement a natural cubic spline interpolator.
|
|
* For details look at http://en.wikipedia.org/wiki/Spline_interpolation
|
|
*
|
|
* Instead of using a real matrix with n^2 elements for the linear system
|
|
* of equations we use three arrays o, p, q to hold the tridiagonal matrix
|
|
* as following to save memory:
|
|
*
|
|
* p[0] q[0] 0 0 0
|
|
* o[1] p[1] q[1] 0 0
|
|
* 0 o[2] p[2] q[2] .
|
|
* . . . . .
|
|
*/
|
|
|
|
#define DEFINE_CUBIC_GET(vtype,round, convert) \
|
|
static void \
|
|
_interpolate_cubic_update_cache_##vtype (GstInterpolationControlSource *self) \
|
|
{ \
|
|
gint i, n = self->priv->nvalues; \
|
|
gdouble *o = g_new0 (gdouble, n); \
|
|
gdouble *p = g_new0 (gdouble, n); \
|
|
gdouble *q = g_new0 (gdouble, n); \
|
|
\
|
|
gdouble *h = g_new0 (gdouble, n); \
|
|
gdouble *b = g_new0 (gdouble, n); \
|
|
gdouble *z = g_new0 (gdouble, n); \
|
|
\
|
|
GSequenceIter *iter; \
|
|
GstControlPoint *cp; \
|
|
GstClockTime x, x_next; \
|
|
g##vtype y_prev, y, y_next; \
|
|
\
|
|
/* Fill linear system of equations */ \
|
|
iter = g_sequence_get_begin_iter (self->priv->values); \
|
|
cp = g_sequence_get (iter); \
|
|
x = cp->timestamp; \
|
|
y = g_value_get_##vtype (&cp->value); \
|
|
\
|
|
p[0] = 1.0; \
|
|
\
|
|
iter = g_sequence_iter_next (iter); \
|
|
cp = g_sequence_get (iter); \
|
|
x_next = cp->timestamp; \
|
|
y_next = g_value_get_##vtype (&cp->value); \
|
|
h[0] = gst_guint64_to_gdouble (x_next - x); \
|
|
\
|
|
for (i = 1; i < n-1; i++) { \
|
|
/* Shuffle x and y values */ \
|
|
y_prev = y; \
|
|
x = x_next; \
|
|
y = y_next; \
|
|
iter = g_sequence_iter_next (iter); \
|
|
cp = g_sequence_get (iter); \
|
|
x_next = cp->timestamp; \
|
|
y_next = g_value_get_##vtype (&cp->value); \
|
|
\
|
|
h[i] = gst_guint64_to_gdouble (x_next - x); \
|
|
o[i] = h[i-1]; \
|
|
p[i] = 2.0 * (h[i-1] + h[i]); \
|
|
q[i] = h[i]; \
|
|
b[i] = convert (y_next - y) / h[i] - convert (y - y_prev) / h[i-1]; \
|
|
} \
|
|
p[n-1] = 1.0; \
|
|
\
|
|
/* Use Gauss elimination to set everything below the \
|
|
* diagonal to zero */ \
|
|
for (i = 1; i < n-1; i++) { \
|
|
gdouble a = o[i] / p[i-1]; \
|
|
p[i] -= a * q[i-1]; \
|
|
b[i] -= a * b[i-1]; \
|
|
} \
|
|
\
|
|
/* Solve everything else from bottom to top */ \
|
|
for (i = n-2; i > 0; i--) \
|
|
z[i] = (b[i] - q[i] * z[i+1]) / p[i]; \
|
|
\
|
|
/* Save cache next in the GstControlPoint */ \
|
|
\
|
|
iter = g_sequence_get_begin_iter (self->priv->values); \
|
|
for (i = 0; i < n; i++) { \
|
|
cp = g_sequence_get (iter); \
|
|
cp->cache.cubic.h = h[i]; \
|
|
cp->cache.cubic.z = z[i]; \
|
|
iter = g_sequence_iter_next (iter); \
|
|
} \
|
|
\
|
|
/* Free our temporary arrays */ \
|
|
g_free (o); \
|
|
g_free (p); \
|
|
g_free (q); \
|
|
g_free (h); \
|
|
g_free (b); \
|
|
g_free (z); \
|
|
} \
|
|
\
|
|
static inline void \
|
|
_interpolate_cubic_get_##vtype (GstInterpolationControlSource *self, GstControlPoint *cp1, g##vtype value1, GstControlPoint *cp2, g##vtype value2, GstClockTime timestamp, g##vtype min, g##vtype max, g##vtype *ret) \
|
|
{ \
|
|
if (!self->priv->valid_cache) { \
|
|
_interpolate_cubic_update_cache_##vtype (self); \
|
|
self->priv->valid_cache = TRUE; \
|
|
} \
|
|
\
|
|
if (cp2) { \
|
|
gdouble diff1, diff2; \
|
|
gdouble out; \
|
|
\
|
|
diff1 = gst_guint64_to_gdouble (timestamp - cp1->timestamp); \
|
|
diff2 = gst_guint64_to_gdouble (cp2->timestamp - timestamp); \
|
|
\
|
|
out = (cp2->cache.cubic.z * diff1 * diff1 * diff1 + cp1->cache.cubic.z * diff2 * diff2 * diff2) / cp1->cache.cubic.h; \
|
|
out += (convert (value2) / cp1->cache.cubic.h - cp1->cache.cubic.h * cp2->cache.cubic.z) * diff1; \
|
|
out += (convert (value1) / cp1->cache.cubic.h - cp1->cache.cubic.h * cp1->cache.cubic.z) * diff2; \
|
|
\
|
|
if (round) \
|
|
*ret = (g##vtype) (out + 0.5); \
|
|
else \
|
|
*ret = (g##vtype) out; \
|
|
} \
|
|
else { \
|
|
*ret = value1; \
|
|
} \
|
|
*ret = CLAMP (*ret, min, max); \
|
|
} \
|
|
\
|
|
static gboolean \
|
|
interpolate_cubic_get_##vtype (GstInterpolationControlSource *self, GstClockTime timestamp, GValue *value) \
|
|
{ \
|
|
g##vtype ret, min, max; \
|
|
GSequenceIter *iter; \
|
|
GstControlPoint *cp1, *cp2 = NULL, cp = {0, }; \
|
|
\
|
|
if (self->priv->nvalues <= 2) \
|
|
return interpolate_linear_get_##vtype (self, timestamp, value); \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
\
|
|
min = g_value_get_##vtype (&self->priv->minimum_value); \
|
|
max = g_value_get_##vtype (&self->priv->maximum_value); \
|
|
\
|
|
iter = gst_interpolation_control_source_find_control_point_iter (self, timestamp); \
|
|
if (iter) { \
|
|
cp1 = g_sequence_get (iter); \
|
|
iter = g_sequence_iter_next (iter); \
|
|
} else { \
|
|
cp.timestamp = G_GUINT64_CONSTANT(0); \
|
|
g_value_init (&cp.value, self->priv->type); \
|
|
g_value_copy (&self->priv->default_value, &cp.value); \
|
|
cp1 = &cp; \
|
|
if (G_LIKELY (self->priv->values)) \
|
|
iter = g_sequence_get_begin_iter (self->priv->values); \
|
|
} \
|
|
if (iter && !g_sequence_iter_is_end (iter)) \
|
|
cp2 = g_sequence_get (iter); \
|
|
\
|
|
_interpolate_cubic_get_##vtype (self, cp1, g_value_get_##vtype (&cp1->value), cp2, (cp2 ? g_value_get_##vtype (&cp2->value) : 0), timestamp, min, max, &ret); \
|
|
g_value_set_##vtype (value, ret); \
|
|
g_mutex_unlock (self->lock); \
|
|
if (cp1 == &cp) \
|
|
g_value_unset (&cp.value); \
|
|
return TRUE; \
|
|
} \
|
|
\
|
|
static gboolean \
|
|
interpolate_cubic_get_##vtype##_value_array (GstInterpolationControlSource *self, \
|
|
GstClockTime timestamp, GstValueArray * value_array) \
|
|
{ \
|
|
gint i; \
|
|
GstClockTime ts = timestamp; \
|
|
GstClockTime next_ts = 0; \
|
|
g##vtype *values = (g##vtype *) value_array->values; \
|
|
GSequenceIter *iter1, *iter2 = NULL; \
|
|
GstControlPoint *cp1 = NULL, *cp2 = NULL, cp = {0, }; \
|
|
g##vtype val1 = 0, val2 = 0, min, max; \
|
|
\
|
|
if (self->priv->nvalues <= 2) \
|
|
return interpolate_linear_get_##vtype##_value_array (self, timestamp, value_array); \
|
|
\
|
|
g_mutex_lock (self->lock); \
|
|
\
|
|
cp.timestamp = G_GUINT64_CONSTANT(0); \
|
|
g_value_init (&cp.value, self->priv->type); \
|
|
g_value_copy (&self->priv->default_value, &cp.value); \
|
|
\
|
|
min = g_value_get_##vtype (&self->priv->minimum_value); \
|
|
max = g_value_get_##vtype (&self->priv->maximum_value); \
|
|
\
|
|
for(i = 0; i < value_array->nbsamples; i++) { \
|
|
if (timestamp >= next_ts) { \
|
|
iter1 = gst_interpolation_control_source_find_control_point_iter (self, ts); \
|
|
if (!iter1) { \
|
|
cp1 = &cp; \
|
|
if (G_LIKELY (self->priv->values)) \
|
|
iter2 = g_sequence_get_begin_iter (self->priv->values); \
|
|
else \
|
|
iter2 = NULL; \
|
|
} else { \
|
|
cp1 = g_sequence_get (iter1); \
|
|
iter2 = g_sequence_iter_next (iter1); \
|
|
} \
|
|
\
|
|
if (iter2 && !g_sequence_iter_is_end (iter2)) { \
|
|
cp2 = g_sequence_get (iter2); \
|
|
next_ts = cp2->timestamp; \
|
|
} else { \
|
|
next_ts = GST_CLOCK_TIME_NONE; \
|
|
} \
|
|
val1 = g_value_get_##vtype (&cp1->value); \
|
|
if (cp2) \
|
|
val2 = g_value_get_##vtype (&cp2->value); \
|
|
} \
|
|
_interpolate_cubic_get_##vtype (self, cp1, val1, cp2, val2, timestamp, min, max, values); \
|
|
ts += value_array->sample_interval; \
|
|
values++; \
|
|
} \
|
|
g_mutex_unlock (self->lock); \
|
|
g_value_unset (&cp.value); \
|
|
return TRUE; \
|
|
}
|
|
|
|
DEFINE_CUBIC_GET (int, TRUE, EMPTY);
|
|
DEFINE_CUBIC_GET (uint, TRUE, EMPTY);
|
|
DEFINE_CUBIC_GET (long, TRUE, EMPTY);
|
|
DEFINE_CUBIC_GET (ulong, TRUE, EMPTY);
|
|
DEFINE_CUBIC_GET (int64, TRUE, EMPTY);
|
|
DEFINE_CUBIC_GET (uint64, TRUE, gst_guint64_to_gdouble);
|
|
DEFINE_CUBIC_GET (float, FALSE, EMPTY);
|
|
DEFINE_CUBIC_GET (double, FALSE, EMPTY);
|
|
|
|
static GstInterpolateMethod interpolate_cubic = {
|
|
(GstControlSourceGetValue) interpolate_cubic_get_int,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_int_value_array,
|
|
(GstControlSourceGetValue) interpolate_cubic_get_uint,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_uint_value_array,
|
|
(GstControlSourceGetValue) interpolate_cubic_get_long,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_long_value_array,
|
|
(GstControlSourceGetValue) interpolate_cubic_get_ulong,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_ulong_value_array,
|
|
(GstControlSourceGetValue) interpolate_cubic_get_int64,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_int64_value_array,
|
|
(GstControlSourceGetValue) interpolate_cubic_get_uint64,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_uint64_value_array,
|
|
(GstControlSourceGetValue) interpolate_cubic_get_float,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_float_value_array,
|
|
(GstControlSourceGetValue) interpolate_cubic_get_double,
|
|
(GstControlSourceGetValueArray) interpolate_cubic_get_double_value_array,
|
|
(GstControlSourceGetValue) NULL,
|
|
(GstControlSourceGetValueArray) NULL,
|
|
(GstControlSourceGetValue) NULL,
|
|
(GstControlSourceGetValueArray) NULL,
|
|
(GstControlSourceGetValue) NULL,
|
|
(GstControlSourceGetValueArray) NULL
|
|
};
|
|
|
|
/* register all interpolation methods */
|
|
GstInterpolateMethod *priv_gst_interpolation_methods[] = {
|
|
&interpolate_none,
|
|
&interpolate_trigger,
|
|
&interpolate_linear,
|
|
&interpolate_cubic,
|
|
&interpolate_cubic
|
|
};
|
|
|
|
guint priv_gst_num_interpolation_methods =
|
|
G_N_ELEMENTS (priv_gst_interpolation_methods);
|