gstreamer/libs/gst/controller/gstlfocontrolsource.c
Stefan Sauer 9a27b9c056 controller: move to core/gstobject
Move the controller to gstobject as a simple delegate. The controller and
controlsource are not classes in core. The controlsources stay separate as a lib
for now. This way we can avoid the qdata lookups.

Also remove controller_init(). There is no more need to link to controller for
elements.

Also sanitize the API. We now have functions to add properties like we had
methods to remove that. That avoids then ref count hacks we had in _new.
2011-11-04 20:11:51 +01:00

1164 lines
40 KiB
C

/* GStreamer
*
* Copyright (C) 2007,2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* gstlfocontrolsource.c: Control source that provides some periodic waveforms
* as control values.
*
* 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.
*/
/**
* SECTION:gstlfocontrolsource
* @short_description: LFO control source
*
* #GstLFOControlSource is a #GstControlSource, that provides several periodic waveforms
* as control values. It supports all fundamental, numeric GValue types as property.
*
* To use #GstLFOControlSource get a new instance by calling gst_lfo_control_source_new(),
* bind it to a #GParamSpec and set the relevant properties or use
* gst_lfo_control_source_set_waveform.
*
* All functions are MT-safe.
*
*/
#include <glib-object.h>
#include <gst/gst.h>
#include <gst/gstcontrolsource.h>
#include "gstlfocontrolsource.h"
#include "gstlfocontrolsourceprivate.h"
#include <gst/math-compat.h>
#define GST_CAT_DEFAULT controller_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define EMPTY(x) (x)
/* FIXME: as % in C is not the modulo operator we need here for
* negative numbers implement our own. Are there better ways? */
static inline GstClockTime
_calculate_pos (GstClockTime timestamp, GstClockTime timeshift,
GstClockTime period)
{
while (timestamp < timeshift)
timestamp += period;
timestamp -= timeshift;
return timestamp % period;
}
#define DEFINE_SINE(type,round,convert) \
static inline g##type \
_sine_get_##type (GstLFOControlSource *self, g##type max, g##type min, gdouble amp, gdouble off, GstClockTime timeshift, GstClockTime period, gdouble frequency, GstClockTime timestamp) \
{ \
gdouble ret; \
GstClockTime pos = _calculate_pos (timestamp, timeshift, period); \
\
ret = sin (2.0 * M_PI * (frequency / GST_SECOND) * gst_guint64_to_gdouble (pos)); \
ret *= amp; \
ret += off; \
\
if (round) \
ret += 0.5; \
\
return (g##type) CLAMP (ret, convert (min), convert (max)); \
} \
\
static gboolean \
waveform_sine_get_##type (GstLFOControlSource *self, GstClockTime timestamp, \
GValue *value) \
{ \
g##type ret, max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
ret = _sine_get_##type (self, max, min, amp, off, timeshift, period, frequency, timestamp); \
g_value_set_##type (value, ret); \
g_mutex_unlock (self->lock); \
return TRUE; \
} \
\
static gboolean \
waveform_sine_get_##type##_value_array (GstLFOControlSource *self, \
GstClockTime timestamp, GstValueArray * value_array) \
{ \
gint i; \
GstClockTime ts = timestamp; \
g##type *values = (g##type *) value_array->values; \
g##type max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
for(i = 0; i < value_array->nbsamples; i++) { \
*values = _sine_get_##type (self, max, min, amp, off, timeshift, period, frequency, ts); \
ts += value_array->sample_interval; \
values++; \
} \
g_mutex_unlock (self->lock); \
return TRUE; \
}
DEFINE_SINE (int, TRUE, EMPTY);
DEFINE_SINE (uint, TRUE, EMPTY);
DEFINE_SINE (long, TRUE, EMPTY);
DEFINE_SINE (ulong, TRUE, EMPTY);
DEFINE_SINE (int64, TRUE, EMPTY);
DEFINE_SINE (uint64, TRUE, gst_guint64_to_gdouble);
DEFINE_SINE (float, FALSE, EMPTY);
DEFINE_SINE (double, FALSE, EMPTY);
static GstWaveformImplementation waveform_sine = {
(GstControlSourceGetValue) waveform_sine_get_int,
(GstControlSourceGetValueArray) waveform_sine_get_int_value_array,
(GstControlSourceGetValue) waveform_sine_get_uint,
(GstControlSourceGetValueArray) waveform_sine_get_uint_value_array,
(GstControlSourceGetValue) waveform_sine_get_long,
(GstControlSourceGetValueArray) waveform_sine_get_long_value_array,
(GstControlSourceGetValue) waveform_sine_get_ulong,
(GstControlSourceGetValueArray) waveform_sine_get_ulong_value_array,
(GstControlSourceGetValue) waveform_sine_get_int64,
(GstControlSourceGetValueArray) waveform_sine_get_int64_value_array,
(GstControlSourceGetValue) waveform_sine_get_uint64,
(GstControlSourceGetValueArray) waveform_sine_get_uint64_value_array,
(GstControlSourceGetValue) waveform_sine_get_float,
(GstControlSourceGetValueArray) waveform_sine_get_float_value_array,
(GstControlSourceGetValue) waveform_sine_get_double,
(GstControlSourceGetValueArray) waveform_sine_get_double_value_array
};
#define DEFINE_SQUARE(type,round, convert) \
\
static inline g##type \
_square_get_##type (GstLFOControlSource *self, g##type max, g##type min, gdouble amp, gdouble off, GstClockTime timeshift, GstClockTime period, gdouble frequency, GstClockTime timestamp) \
{ \
GstClockTime pos = _calculate_pos (timestamp, timeshift, period); \
gdouble ret; \
\
if (pos >= period / 2) \
ret = amp; \
else \
ret = - amp; \
\
ret += off; \
\
if (round) \
ret += 0.5; \
\
return (g##type) CLAMP (ret, convert (min), convert (max)); \
} \
\
static gboolean \
waveform_square_get_##type (GstLFOControlSource *self, GstClockTime timestamp, \
GValue *value) \
{ \
g##type ret, max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
ret = _square_get_##type (self, max, min, amp, off, timeshift, period, frequency, timestamp); \
g_value_set_##type (value, ret); \
g_mutex_unlock (self->lock); \
return TRUE; \
} \
\
static gboolean \
waveform_square_get_##type##_value_array (GstLFOControlSource *self, \
GstClockTime timestamp, GstValueArray * value_array) \
{ \
gint i; \
GstClockTime ts = timestamp; \
g##type *values = (g##type *) value_array->values; \
g##type max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
for(i = 0; i < value_array->nbsamples; i++) { \
*values = _square_get_##type (self, max, min, amp, off, timeshift, period, frequency, ts); \
ts += value_array->sample_interval; \
values++; \
} \
g_mutex_unlock (self->lock); \
return TRUE; \
}
DEFINE_SQUARE (int, TRUE, EMPTY);
DEFINE_SQUARE (uint, TRUE, EMPTY);
DEFINE_SQUARE (long, TRUE, EMPTY);
DEFINE_SQUARE (ulong, TRUE, EMPTY);
DEFINE_SQUARE (int64, TRUE, EMPTY);
DEFINE_SQUARE (uint64, TRUE, gst_guint64_to_gdouble);
DEFINE_SQUARE (float, FALSE, EMPTY);
DEFINE_SQUARE (double, FALSE, EMPTY);
static GstWaveformImplementation waveform_square = {
(GstControlSourceGetValue) waveform_square_get_int,
(GstControlSourceGetValueArray) waveform_square_get_int_value_array,
(GstControlSourceGetValue) waveform_square_get_uint,
(GstControlSourceGetValueArray) waveform_square_get_uint_value_array,
(GstControlSourceGetValue) waveform_square_get_long,
(GstControlSourceGetValueArray) waveform_square_get_long_value_array,
(GstControlSourceGetValue) waveform_square_get_ulong,
(GstControlSourceGetValueArray) waveform_square_get_ulong_value_array,
(GstControlSourceGetValue) waveform_square_get_int64,
(GstControlSourceGetValueArray) waveform_square_get_int64_value_array,
(GstControlSourceGetValue) waveform_square_get_uint64,
(GstControlSourceGetValueArray) waveform_square_get_uint64_value_array,
(GstControlSourceGetValue) waveform_square_get_float,
(GstControlSourceGetValueArray) waveform_square_get_float_value_array,
(GstControlSourceGetValue) waveform_square_get_double,
(GstControlSourceGetValueArray) waveform_square_get_double_value_array
};
#define DEFINE_SAW(type,round,convert) \
\
static inline g##type \
_saw_get_##type (GstLFOControlSource *self, g##type max, g##type min, gdouble amp, gdouble off, GstClockTime timeshift, GstClockTime period, gdouble frequency, GstClockTime timestamp) \
{ \
GstClockTime pos = _calculate_pos (timestamp, timeshift, period); \
gdouble ret; \
\
ret = - ((gst_guint64_to_gdouble (pos) - gst_guint64_to_gdouble (period) / 2.0) * ((2.0 * amp) / gst_guint64_to_gdouble (period)));\
\
ret += off; \
\
if (round) \
ret += 0.5; \
\
return (g##type) CLAMP (ret, convert (min), convert (max)); \
} \
\
static gboolean \
waveform_saw_get_##type (GstLFOControlSource *self, GstClockTime timestamp, \
GValue *value) \
{ \
g##type ret, max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
ret = _saw_get_##type (self, max, min, amp, off, timeshift, period, frequency, timestamp); \
g_value_set_##type (value, ret); \
g_mutex_unlock (self->lock); \
return TRUE; \
} \
\
static gboolean \
waveform_saw_get_##type##_value_array (GstLFOControlSource *self, \
GstClockTime timestamp, GstValueArray * value_array) \
{ \
gint i; \
GstClockTime ts = timestamp; \
g##type *values = (g##type *) value_array->values; \
g##type max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
for(i = 0; i < value_array->nbsamples; i++) { \
*values = _saw_get_##type (self, max, min, amp, off, timeshift, period, frequency, ts); \
ts += value_array->sample_interval; \
values++; \
} \
g_mutex_unlock (self->lock); \
return TRUE; \
}
DEFINE_SAW (int, TRUE, EMPTY);
DEFINE_SAW (uint, TRUE, EMPTY);
DEFINE_SAW (long, TRUE, EMPTY);
DEFINE_SAW (ulong, TRUE, EMPTY);
DEFINE_SAW (int64, TRUE, EMPTY);
DEFINE_SAW (uint64, TRUE, gst_guint64_to_gdouble);
DEFINE_SAW (float, FALSE, EMPTY);
DEFINE_SAW (double, FALSE, EMPTY);
static GstWaveformImplementation waveform_saw = {
(GstControlSourceGetValue) waveform_saw_get_int,
(GstControlSourceGetValueArray) waveform_saw_get_int_value_array,
(GstControlSourceGetValue) waveform_saw_get_uint,
(GstControlSourceGetValueArray) waveform_saw_get_uint_value_array,
(GstControlSourceGetValue) waveform_saw_get_long,
(GstControlSourceGetValueArray) waveform_saw_get_long_value_array,
(GstControlSourceGetValue) waveform_saw_get_ulong,
(GstControlSourceGetValueArray) waveform_saw_get_ulong_value_array,
(GstControlSourceGetValue) waveform_saw_get_int64,
(GstControlSourceGetValueArray) waveform_saw_get_int64_value_array,
(GstControlSourceGetValue) waveform_saw_get_uint64,
(GstControlSourceGetValueArray) waveform_saw_get_uint64_value_array,
(GstControlSourceGetValue) waveform_saw_get_float,
(GstControlSourceGetValueArray) waveform_saw_get_float_value_array,
(GstControlSourceGetValue) waveform_saw_get_double,
(GstControlSourceGetValueArray) waveform_saw_get_double_value_array
};
#define DEFINE_RSAW(type,round,convert) \
\
static inline g##type \
_rsaw_get_##type (GstLFOControlSource *self, g##type max, g##type min, gdouble amp, gdouble off, GstClockTime timeshift, GstClockTime period, gdouble frequency, GstClockTime timestamp) \
{ \
GstClockTime pos = _calculate_pos (timestamp, timeshift, period); \
gdouble ret; \
\
ret = ((gst_guint64_to_gdouble (pos) - gst_guint64_to_gdouble (period) / 2.0) * ((2.0 * amp) / gst_guint64_to_gdouble (period)));\
\
ret += off; \
\
if (round) \
ret += 0.5; \
\
return (g##type) CLAMP (ret, convert (min), convert (max)); \
} \
\
static gboolean \
waveform_rsaw_get_##type (GstLFOControlSource *self, GstClockTime timestamp, \
GValue *value) \
{ \
g##type ret, max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
ret = _rsaw_get_##type (self, max, min, amp, off, timeshift, period, frequency, timestamp); \
g_value_set_##type (value, ret); \
g_mutex_unlock (self->lock); \
return TRUE; \
} \
\
static gboolean \
waveform_rsaw_get_##type##_value_array (GstLFOControlSource *self, \
GstClockTime timestamp, GstValueArray * value_array) \
{ \
gint i; \
GstClockTime ts = timestamp; \
g##type *values = (g##type *) value_array->values; \
g##type max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
for(i = 0; i < value_array->nbsamples; i++) { \
*values = _rsaw_get_##type (self, max, min, amp, off, timeshift, period, frequency, ts); \
ts += value_array->sample_interval; \
values++; \
} \
g_mutex_unlock (self->lock); \
return TRUE; \
}
DEFINE_RSAW (int, TRUE, EMPTY);
DEFINE_RSAW (uint, TRUE, EMPTY);
DEFINE_RSAW (long, TRUE, EMPTY);
DEFINE_RSAW (ulong, TRUE, EMPTY);
DEFINE_RSAW (int64, TRUE, EMPTY);
DEFINE_RSAW (uint64, TRUE, gst_guint64_to_gdouble);
DEFINE_RSAW (float, FALSE, EMPTY);
DEFINE_RSAW (double, FALSE, EMPTY);
static GstWaveformImplementation waveform_rsaw = {
(GstControlSourceGetValue) waveform_rsaw_get_int,
(GstControlSourceGetValueArray) waveform_rsaw_get_int_value_array,
(GstControlSourceGetValue) waveform_rsaw_get_uint,
(GstControlSourceGetValueArray) waveform_rsaw_get_uint_value_array,
(GstControlSourceGetValue) waveform_rsaw_get_long,
(GstControlSourceGetValueArray) waveform_rsaw_get_long_value_array,
(GstControlSourceGetValue) waveform_rsaw_get_ulong,
(GstControlSourceGetValueArray) waveform_rsaw_get_ulong_value_array,
(GstControlSourceGetValue) waveform_rsaw_get_int64,
(GstControlSourceGetValueArray) waveform_rsaw_get_int64_value_array,
(GstControlSourceGetValue) waveform_rsaw_get_uint64,
(GstControlSourceGetValueArray) waveform_rsaw_get_uint64_value_array,
(GstControlSourceGetValue) waveform_rsaw_get_float,
(GstControlSourceGetValueArray) waveform_rsaw_get_float_value_array,
(GstControlSourceGetValue) waveform_rsaw_get_double,
(GstControlSourceGetValueArray) waveform_rsaw_get_double_value_array
};
#define DEFINE_TRIANGLE(type,round,convert) \
\
static inline g##type \
_triangle_get_##type (GstLFOControlSource *self, g##type max, g##type min, gdouble amp, gdouble off, GstClockTime timeshift, GstClockTime period, gdouble frequency, GstClockTime timestamp) \
{ \
GstClockTime pos = _calculate_pos (timestamp, timeshift, period); \
gdouble ret; \
\
if (gst_guint64_to_gdouble (pos) <= gst_guint64_to_gdouble (period) / 4.0) \
ret = gst_guint64_to_gdouble (pos) * ((4.0 * amp) / gst_guint64_to_gdouble (period)); \
else if (gst_guint64_to_gdouble (pos) <= (3.0 * gst_guint64_to_gdouble (period)) / 4.0) \
ret = -(gst_guint64_to_gdouble (pos) - gst_guint64_to_gdouble (period) / 2.0) * ((4.0 * amp) / gst_guint64_to_gdouble (period)); \
else \
ret = gst_guint64_to_gdouble (period) - gst_guint64_to_gdouble (pos) * ((4.0 * amp) / gst_guint64_to_gdouble (period)); \
\
ret += off; \
\
if (round) \
ret += 0.5; \
\
return (g##type) CLAMP (ret, convert (min), convert (max)); \
} \
\
static gboolean \
waveform_triangle_get_##type (GstLFOControlSource *self, GstClockTime timestamp, \
GValue *value) \
{ \
g##type ret, max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
ret = _triangle_get_##type (self, max, min, amp, off, timeshift, period, frequency, timestamp); \
g_value_set_##type (value, ret); \
g_mutex_unlock (self->lock); \
return TRUE; \
} \
\
static gboolean \
waveform_triangle_get_##type##_value_array (GstLFOControlSource *self, \
GstClockTime timestamp, GstValueArray * value_array) \
{ \
gint i; \
GstClockTime ts = timestamp; \
g##type *values = (g##type *) value_array->values; \
g##type max, min; \
gdouble amp, off, frequency; \
GstClockTime timeshift, period; \
\
g_mutex_lock (self->lock); \
max = g_value_get_##type (&self->priv->maximum_value); \
min = g_value_get_##type (&self->priv->minimum_value); \
amp = convert (g_value_get_##type (&self->priv->amplitude)); \
off = convert (g_value_get_##type (&self->priv->offset)); \
timeshift = self->priv->timeshift; \
period = self->priv->period; \
frequency = self->priv->frequency; \
\
for(i = 0; i < value_array->nbsamples; i++) { \
*values = _triangle_get_##type (self, max, min, amp, off, timeshift, period, frequency, ts); \
ts += value_array->sample_interval; \
values++; \
} \
g_mutex_unlock (self->lock); \
return TRUE; \
}
DEFINE_TRIANGLE (int, TRUE, EMPTY);
DEFINE_TRIANGLE (uint, TRUE, EMPTY);
DEFINE_TRIANGLE (long, TRUE, EMPTY);
DEFINE_TRIANGLE (ulong, TRUE, EMPTY);
DEFINE_TRIANGLE (int64, TRUE, EMPTY);
DEFINE_TRIANGLE (uint64, TRUE, gst_guint64_to_gdouble);
DEFINE_TRIANGLE (float, FALSE, EMPTY);
DEFINE_TRIANGLE (double, FALSE, EMPTY);
static GstWaveformImplementation waveform_triangle = {
(GstControlSourceGetValue) waveform_triangle_get_int,
(GstControlSourceGetValueArray) waveform_triangle_get_int_value_array,
(GstControlSourceGetValue) waveform_triangle_get_uint,
(GstControlSourceGetValueArray) waveform_triangle_get_uint_value_array,
(GstControlSourceGetValue) waveform_triangle_get_long,
(GstControlSourceGetValueArray) waveform_triangle_get_long_value_array,
(GstControlSourceGetValue) waveform_triangle_get_ulong,
(GstControlSourceGetValueArray) waveform_triangle_get_ulong_value_array,
(GstControlSourceGetValue) waveform_triangle_get_int64,
(GstControlSourceGetValueArray) waveform_triangle_get_int64_value_array,
(GstControlSourceGetValue) waveform_triangle_get_uint64,
(GstControlSourceGetValueArray) waveform_triangle_get_uint64_value_array,
(GstControlSourceGetValue) waveform_triangle_get_float,
(GstControlSourceGetValueArray) waveform_triangle_get_float_value_array,
(GstControlSourceGetValue) waveform_triangle_get_double,
(GstControlSourceGetValueArray) waveform_triangle_get_double_value_array
};
static GstWaveformImplementation *waveforms[] = {
&waveform_sine,
&waveform_square,
&waveform_saw,
&waveform_rsaw,
&waveform_triangle
};
static const guint num_waveforms = G_N_ELEMENTS (waveforms);
enum
{
PROP_WAVEFORM = 1,
PROP_FREQUENCY,
PROP_TIMESHIFT,
PROP_AMPLITUDE,
PROP_OFFSET
};
GType
gst_lfo_waveform_get_type (void)
{
static gsize gtype = 0;
static const GEnumValue values[] = {
{GST_LFO_WAVEFORM_SINE, "GST_LFO_WAVEFORM_SINE",
"sine"},
{GST_LFO_WAVEFORM_SQUARE, "GST_LFO_WAVEFORM_SQUARE",
"square"},
{GST_LFO_WAVEFORM_SAW, "GST_LFO_WAVEFORM_SAW",
"saw"},
{GST_LFO_WAVEFORM_REVERSE_SAW, "GST_LFO_WAVEFORM_REVERSE_SAW",
"reverse-saw"},
{GST_LFO_WAVEFORM_TRIANGLE, "GST_LFO_WAVEFORM_TRIANGLE",
"triangle"},
{0, NULL, NULL}
};
if (g_once_init_enter (&gtype)) {
GType tmp = g_enum_register_static ("GstLFOWaveform", values);
g_once_init_leave (&gtype, tmp);
}
return (GType) gtype;
}
#define _do_init \
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "lfo control source", 0, "low frequency oscillator control source")
G_DEFINE_TYPE_WITH_CODE (GstLFOControlSource, gst_lfo_control_source,
GST_TYPE_CONTROL_SOURCE, _do_init);
static GObjectClass *parent_class = NULL;
static void
gst_lfo_control_source_reset (GstLFOControlSource * self)
{
GstControlSource *csource = GST_CONTROL_SOURCE (self);
csource->get_value = NULL;
csource->get_value_array = NULL;
self->priv->type = self->priv->base = G_TYPE_INVALID;
if (G_IS_VALUE (&self->priv->minimum_value))
g_value_unset (&self->priv->minimum_value);
if (G_IS_VALUE (&self->priv->maximum_value))
g_value_unset (&self->priv->maximum_value);
if (G_IS_VALUE (&self->priv->amplitude))
g_value_unset (&self->priv->amplitude);
if (G_IS_VALUE (&self->priv->offset))
g_value_unset (&self->priv->offset);
}
/**
* gst_lfo_control_source_new:
*
* This returns a new, unbound #GstLFOControlSource.
*
* Returns: a new, unbound #GstLFOControlSource.
*/
GstLFOControlSource *
gst_lfo_control_source_new (void)
{
return g_object_newv (GST_TYPE_LFO_CONTROL_SOURCE, 0, NULL);
}
static gboolean
gst_lfo_control_source_set_waveform (GstLFOControlSource * self,
GstLFOWaveform waveform)
{
GstControlSource *csource = GST_CONTROL_SOURCE (self);
gboolean ret = TRUE;
if (waveform >= num_waveforms || (int) waveform < 0) {
GST_WARNING ("waveform %d invalid or not implemented yet", waveform);
return FALSE;
}
if (self->priv->base == G_TYPE_INVALID) {
GST_WARNING ("not bound to a property yet");
return FALSE;
}
switch (self->priv->base) {
case G_TYPE_INT:
csource->get_value = waveforms[waveform]->get_int;
csource->get_value_array = waveforms[waveform]->get_int_value_array;
break;
case G_TYPE_UINT:{
csource->get_value = waveforms[waveform]->get_uint;
csource->get_value_array = waveforms[waveform]->get_uint_value_array;
break;
}
case G_TYPE_LONG:{
csource->get_value = waveforms[waveform]->get_long;
csource->get_value_array = waveforms[waveform]->get_long_value_array;
break;
}
case G_TYPE_ULONG:{
csource->get_value = waveforms[waveform]->get_ulong;
csource->get_value_array = waveforms[waveform]->get_ulong_value_array;
break;
}
case G_TYPE_INT64:{
csource->get_value = waveforms[waveform]->get_int64;
csource->get_value_array = waveforms[waveform]->get_int64_value_array;
break;
}
case G_TYPE_UINT64:{
csource->get_value = waveforms[waveform]->get_uint64;
csource->get_value_array = waveforms[waveform]->get_uint64_value_array;
break;
}
case G_TYPE_FLOAT:{
csource->get_value = waveforms[waveform]->get_float;
csource->get_value_array = waveforms[waveform]->get_float_value_array;
break;
}
case G_TYPE_DOUBLE:{
csource->get_value = waveforms[waveform]->get_double;
csource->get_value_array = waveforms[waveform]->get_double_value_array;
break;
}
default:
ret = FALSE;
break;
}
if (ret)
self->priv->waveform = waveform;
else
GST_WARNING ("incomplete implementation for type '%s'",
GST_STR_NULL (g_type_name (self->priv->type)));
return ret;
}
static gboolean
gst_lfo_control_source_bind (GstControlSource * source, GParamSpec * pspec)
{
GType type, base;
GstLFOControlSource *self = GST_LFO_CONTROL_SOURCE (source);
gboolean ret = TRUE;
/* get the fundamental base type */
self->priv->type = base = type = G_PARAM_SPEC_VALUE_TYPE (pspec);
while ((type = g_type_parent (type)))
base = type;
self->priv->base = base;
/* restore type */
type = self->priv->type;
switch (base) {
case G_TYPE_INT:{
GParamSpecInt *tpspec = G_PARAM_SPEC_INT (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_int (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_int (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_int (&self->priv->amplitude, 0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_int (&self->priv->offset, tpspec->default_value);
}
break;
}
case G_TYPE_UINT:{
GParamSpecUInt *tpspec = G_PARAM_SPEC_UINT (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_uint (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_uint (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_uint (&self->priv->amplitude, 0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_uint (&self->priv->offset, tpspec->default_value);
}
break;
}
case G_TYPE_LONG:{
GParamSpecLong *tpspec = G_PARAM_SPEC_LONG (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_long (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_long (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_long (&self->priv->amplitude, 0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_long (&self->priv->offset, tpspec->default_value);
}
break;
}
case G_TYPE_ULONG:{
GParamSpecULong *tpspec = G_PARAM_SPEC_ULONG (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_ulong (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_ulong (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_ulong (&self->priv->amplitude, 0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_ulong (&self->priv->offset, tpspec->default_value);
}
break;
}
case G_TYPE_INT64:{
GParamSpecInt64 *tpspec = G_PARAM_SPEC_INT64 (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_int64 (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_int64 (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_int64 (&self->priv->amplitude, 0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_int64 (&self->priv->offset, tpspec->default_value);
}
break;
}
case G_TYPE_UINT64:{
GParamSpecUInt64 *tpspec = G_PARAM_SPEC_UINT64 (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_uint64 (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_uint64 (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_uint64 (&self->priv->amplitude, 0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_uint64 (&self->priv->offset, tpspec->default_value);
}
break;
}
case G_TYPE_FLOAT:{
GParamSpecFloat *tpspec = G_PARAM_SPEC_FLOAT (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_float (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_float (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_float (&self->priv->amplitude, 0.0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_float (&self->priv->offset, tpspec->default_value);
}
break;
}
case G_TYPE_DOUBLE:{
GParamSpecDouble *tpspec = G_PARAM_SPEC_DOUBLE (pspec);
g_value_init (&self->priv->minimum_value, type);
g_value_set_double (&self->priv->minimum_value, tpspec->minimum);
g_value_init (&self->priv->maximum_value, type);
g_value_set_double (&self->priv->maximum_value, tpspec->maximum);
if (!G_IS_VALUE (&self->priv->amplitude)) {
g_value_init (&self->priv->amplitude, type);
g_value_set_double (&self->priv->amplitude, 0.0);
}
if (!G_IS_VALUE (&self->priv->offset)) {
g_value_init (&self->priv->offset, type);
g_value_set_double (&self->priv->offset, tpspec->default_value);
}
break;
}
default:
GST_WARNING ("incomplete implementation for paramspec type '%s'",
G_PARAM_SPEC_TYPE_NAME (pspec));
ret = FALSE;
break;
}
if (ret) {
GValue amp = { 0, }
, off = {
0,};
/* This should never fail unless the user already set amplitude or offset
* with an incompatible type before _bind () */
if (!g_value_type_transformable (G_VALUE_TYPE (&self->priv->amplitude),
base)
|| !g_value_type_transformable (G_VALUE_TYPE (&self->priv->offset),
base)) {
GST_WARNING ("incompatible types for amplitude or offset");
gst_lfo_control_source_reset (self);
return FALSE;
}
/* Generate copies and transform to the correct type */
g_value_init (&amp, base);
g_value_transform (&self->priv->amplitude, &amp);
g_value_init (&off, base);
g_value_transform (&self->priv->offset, &off);
ret = gst_lfo_control_source_set_waveform (self, self->priv->waveform);
g_value_unset (&self->priv->amplitude);
g_value_init (&self->priv->amplitude, self->priv->base);
g_value_transform (&amp, &self->priv->amplitude);
g_value_unset (&self->priv->offset);
g_value_init (&self->priv->offset, self->priv->base);
g_value_transform (&off, &self->priv->offset);
g_value_unset (&amp);
g_value_unset (&off);
}
if (!ret)
gst_lfo_control_source_reset (self);
return ret;
}
static void
gst_lfo_control_source_init (GstLFOControlSource * self)
{
self->priv =
G_TYPE_INSTANCE_GET_PRIVATE (self, GST_TYPE_LFO_CONTROL_SOURCE,
GstLFOControlSourcePrivate);
self->priv->waveform = GST_LFO_WAVEFORM_SINE;
self->priv->frequency = 1.0;
self->priv->period = GST_SECOND / self->priv->frequency;
self->priv->timeshift = 0;
self->lock = g_mutex_new ();
}
static void
gst_lfo_control_source_finalize (GObject * obj)
{
GstLFOControlSource *self = GST_LFO_CONTROL_SOURCE (obj);
gst_lfo_control_source_reset (self);
if (self->lock) {
g_mutex_free (self->lock);
self->lock = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_lfo_control_source_dispose (GObject * obj)
{
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static void
gst_lfo_control_source_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstLFOControlSource *self = GST_LFO_CONTROL_SOURCE (object);
switch (prop_id) {
case PROP_WAVEFORM:
g_mutex_lock (self->lock);
gst_lfo_control_source_set_waveform (self,
(GstLFOWaveform) g_value_get_enum (value));
g_mutex_unlock (self->lock);
break;
case PROP_FREQUENCY:{
gdouble frequency = g_value_get_double (value);
g_return_if_fail (frequency > 0
|| ((GstClockTime) (GST_SECOND / frequency)) != 0);
g_mutex_lock (self->lock);
self->priv->frequency = frequency;
self->priv->period = GST_SECOND / frequency;
g_mutex_unlock (self->lock);
break;
}
case PROP_TIMESHIFT:
g_mutex_lock (self->lock);
self->priv->timeshift = g_value_get_uint64 (value);
g_mutex_unlock (self->lock);
break;
case PROP_AMPLITUDE:{
GValue *val = g_value_get_boxed (value);
if (self->priv->type != G_TYPE_INVALID) {
g_return_if_fail (g_value_type_transformable (self->priv->type,
G_VALUE_TYPE (val)));
g_mutex_lock (self->lock);
if (G_IS_VALUE (&self->priv->amplitude))
g_value_unset (&self->priv->amplitude);
g_value_init (&self->priv->amplitude, self->priv->type);
g_value_transform (val, &self->priv->amplitude);
g_mutex_unlock (self->lock);
} else {
g_mutex_lock (self->lock);
if (G_IS_VALUE (&self->priv->amplitude))
g_value_unset (&self->priv->amplitude);
g_value_init (&self->priv->amplitude, G_VALUE_TYPE (val));
g_value_copy (val, &self->priv->amplitude);
g_mutex_unlock (self->lock);
}
break;
}
case PROP_OFFSET:{
GValue *val = g_value_get_boxed (value);
if (self->priv->type != G_TYPE_INVALID) {
g_return_if_fail (g_value_type_transformable (self->priv->type,
G_VALUE_TYPE (val)));
g_mutex_lock (self->lock);
if (G_IS_VALUE (&self->priv->offset))
g_value_unset (&self->priv->offset);
g_value_init (&self->priv->offset, self->priv->type);
g_value_transform (val, &self->priv->offset);
g_mutex_unlock (self->lock);
} else {
g_mutex_lock (self->lock);
if (G_IS_VALUE (&self->priv->offset))
g_value_unset (&self->priv->offset);
g_value_init (&self->priv->offset, G_VALUE_TYPE (val));
g_value_copy (val, &self->priv->offset);
g_mutex_unlock (self->lock);
}
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_lfo_control_source_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstLFOControlSource *self = GST_LFO_CONTROL_SOURCE (object);
switch (prop_id) {
case PROP_WAVEFORM:
g_value_set_enum (value, self->priv->waveform);
break;
case PROP_FREQUENCY:
g_value_set_double (value, self->priv->frequency);
break;
case PROP_TIMESHIFT:
g_value_set_uint64 (value, self->priv->timeshift);
break;
case PROP_AMPLITUDE:
g_value_set_boxed (value, &self->priv->amplitude);
break;
case PROP_OFFSET:
g_value_set_boxed (value, &self->priv->offset);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_lfo_control_source_class_init (GstLFOControlSourceClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstControlSourceClass *csource_class = GST_CONTROL_SOURCE_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
g_type_class_add_private (klass, sizeof (GstLFOControlSourcePrivate));
gobject_class->finalize = gst_lfo_control_source_finalize;
gobject_class->dispose = gst_lfo_control_source_dispose;
gobject_class->set_property = gst_lfo_control_source_set_property;
gobject_class->get_property = gst_lfo_control_source_get_property;
csource_class->bind = gst_lfo_control_source_bind;
/**
* GstLFOControlSource:waveform
*
* Specifies the waveform that should be used for this #GstLFOControlSource.
*
**/
g_object_class_install_property (gobject_class, PROP_WAVEFORM,
g_param_spec_enum ("waveform", "Waveform", "Waveform",
GST_TYPE_LFO_WAVEFORM, GST_LFO_WAVEFORM_SINE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstLFOControlSource:frequency
*
* Specifies the frequency that should be used for the waveform
* of this #GstLFOControlSource. It should be large enough
* so that the period is longer than one nanosecond.
*
**/
g_object_class_install_property (gobject_class, PROP_FREQUENCY,
g_param_spec_double ("frequency", "Frequency",
"Frequency of the waveform", 0.0, G_MAXDOUBLE, 1.0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstLFOControlSource:timeshift
*
* Specifies the timeshift to the right that should be used for the waveform
* of this #GstLFOControlSource in nanoseconds.
*
* To get a n nanosecond shift to the left use
* "(GST_SECOND / frequency) - n".
*
**/
g_object_class_install_property (gobject_class, PROP_TIMESHIFT,
g_param_spec_uint64 ("timeshift", "Timeshift",
"Timeshift of the waveform to the right", 0, G_MAXUINT64, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstLFOControlSource:amplitude
*
* Specifies the amplitude for the waveform of this #GstLFOControlSource.
*
* It should be given as a #GValue with a type that can be transformed
* to the type of the bound property.
**/
g_object_class_install_property (gobject_class, PROP_AMPLITUDE,
g_param_spec_boxed ("amplitude", "Amplitude", "Amplitude of the waveform",
G_TYPE_VALUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstLFOControlSource:offset
*
* Specifies the offset for the waveform of this #GstLFOControlSource.
*
* It should be given as a #GValue with a type that can be transformed
* to the type of the bound property.
**/
g_object_class_install_property (gobject_class, PROP_OFFSET,
g_param_spec_boxed ("offset", "Offset", "Offset of the waveform",
G_TYPE_VALUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}