static gboolean
gst_direct_control_binding_get_value_array (GstControlBinding * _self,
GstClockTime timestamp, GstClockTime interval, guint n_values,
gpointer values_)
{
GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
gint i;
gdouble *src_val;
gboolean res = FALSE;
GstDirectControlBindingConvertValue convert;
gint byte_size;
guint8 *values = (guint8 *) values_;
g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE);
g_return_val_if_fail (values, FALSE);
g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
convert = self->convert_value;
byte_size = self->byte_size;
src_val = g_new0 (gdouble, n_values);
if ((res = gst_control_source_get_value_array (self->cs, timestamp,
interval, n_values, src_val))) {
for (i = 0; i < n_values; i++) {
/* we will only get NAN for sparse control sources, such as triggers */
if (!isnan (src_val[i])) {
convert (self, src_val[i], (gpointer) values);
} else {
GST_LOG ("no control value for property %s at index %d", _self->name,
i);
}
values += byte_size;
}
} else {
GST_LOG ("failed to get control value for property %s at ts %"
GST_TIME_FORMAT, _self->name, GST_TIME_ARGS (timestamp));
}
g_free (src_val);
return res;
}
static gboolean
gst_direct_control_binding_get_g_value_array (GstControlBinding * _self,
GstClockTime timestamp, GstClockTime interval, guint n_values,
GValue * values)
{
GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
gint i;
gdouble *src_val;
gboolean res = FALSE;
GType type;
GstDirectControlBindingConvertGValue convert;
g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE);
g_return_val_if_fail (values, FALSE);
g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
convert = self->convert_g_value;
type = G_PARAM_SPEC_VALUE_TYPE (_self->pspec);
src_val = g_new0 (gdouble, n_values);
if ((res = gst_control_source_get_value_array (self->cs, timestamp,
interval, n_values, src_val))) {
for (i = 0; i < n_values; i++) {
/* we will only get NAN for sparse control sources, such as triggers */
if (!isnan (src_val[i])) {
g_value_init (&values[i], type);
convert (self, src_val[i], &values[i]);
} else {
GST_LOG ("no control value for property %s at index %d", _self->name,
i);
}
}
} else {
GST_LOG ("failed to get control value for property %s at ts %"
GST_TIME_FORMAT, _self->name, GST_TIME_ARGS (timestamp));
}
g_free (src_val);
return res;
}
static gboolean
gst_direct_control_binding_sync_values (GstControlBinding * _self,
GstObject * object, GstClockTime timestamp, GstClockTime last_sync)
{
GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
gdouble src_val;
gboolean ret;
g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), FALSE);
g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
GST_LOG_OBJECT (object, "property '%s' at ts=%" GST_TIME_FORMAT,
_self->name, GST_TIME_ARGS (timestamp));
ret = gst_control_source_get_value (self->cs, timestamp, &src_val);
if (G_LIKELY (ret)) {
GST_LOG_OBJECT (object, " new value %lf", src_val);
/* always set the value for first time, but then only if it changed
* this should limit g_object_notify invocations.
* FIXME: can we detect negative playback rates?
*/
if ((timestamp < last_sync) || (src_val != self->last_value)) {
GValue *dst_val = &self->cur_value;
GST_LOG_OBJECT (object, " mapping %s to value of type %s", _self->name,
G_VALUE_TYPE_NAME (dst_val));
/* run mapping function to convert gdouble to GValue */
self->convert_g_value (self, src_val, dst_val);
/* we can make this faster
* http://bugzilla.gnome.org/show_bug.cgi?id=536939
*/
g_object_set_property ((GObject *) object, _self->name, dst_val);
self->last_value = src_val;
}
} else {
GST_DEBUG_OBJECT (object, "no control value for param %s", _self->name);
}
return (ret);
}
static GValue *
gst_direct_control_binding_get_value (GstControlBinding * _self,
GstClockTime timestamp)
{
GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
GValue *dst_val = NULL;
gdouble src_val;
g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), NULL);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), NULL);
g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
/* get current value via control source */
if (gst_control_source_get_value (self->cs, timestamp, &src_val)) {
dst_val = g_new0 (GValue, 1);
g_value_init (dst_val, G_PARAM_SPEC_VALUE_TYPE (_self->pspec));
self->convert_g_value (self, src_val, dst_val);
} else {
GST_LOG ("no control value for property %s at ts %" GST_TIME_FORMAT,
_self->name, GST_TIME_ARGS (timestamp));
}
return dst_val;
}
static GObject *
gst_direct_control_binding_constructor (GType type, guint n_construct_params,
GObjectConstructParam * construct_params)
{
GstDirectControlBinding *self;
self =
GST_DIRECT_CONTROL_BINDING (G_OBJECT_CLASS (parent_class)->constructor
(type, n_construct_params, construct_params));
if (GST_CONTROL_BINDING_PSPEC (self)) {
GType type, base;
base = type = G_PARAM_SPEC_VALUE_TYPE (GST_CONTROL_BINDING_PSPEC (self));
g_value_init (&self->cur_value, type);
while ((type = g_type_parent (type)))
base = type;
GST_DEBUG (" using type %s", g_type_name (base));
/* select mapping function */
switch (base) {
case G_TYPE_INT:
self->convert_g_value = convert_g_value_to_int;
self->convert_value = convert_value_to_int;
self->byte_size = sizeof (gint);
break;
case G_TYPE_UINT:
self->convert_g_value = convert_g_value_to_uint;
self->convert_value = convert_value_to_uint;
self->byte_size = sizeof (guint);
break;
case G_TYPE_LONG:
self->convert_g_value = convert_g_value_to_long;
self->convert_value = convert_value_to_long;
self->byte_size = sizeof (glong);
break;
case G_TYPE_ULONG:
self->convert_g_value = convert_g_value_to_ulong;
self->convert_value = convert_value_to_ulong;
self->byte_size = sizeof (gulong);
break;
case G_TYPE_INT64:
self->convert_g_value = convert_g_value_to_int64;
self->convert_value = convert_value_to_int64;
self->byte_size = sizeof (gint64);
break;
case G_TYPE_UINT64:
self->convert_g_value = convert_g_value_to_uint64;
self->convert_value = convert_value_to_uint64;
self->byte_size = sizeof (guint64);
break;
case G_TYPE_FLOAT:
self->convert_g_value = convert_g_value_to_float;
self->convert_value = convert_value_to_float;
self->byte_size = sizeof (gfloat);
break;
case G_TYPE_DOUBLE:
self->convert_g_value = convert_g_value_to_double;
self->convert_value = convert_value_to_double;
self->byte_size = sizeof (gdouble);
break;
case G_TYPE_BOOLEAN:
self->convert_g_value = convert_g_value_to_boolean;
self->convert_value = convert_value_to_boolean;
self->byte_size = sizeof (gboolean);
break;
case G_TYPE_ENUM:
self->convert_g_value = convert_g_value_to_enum;
self->convert_value = convert_value_to_enum;
self->byte_size = sizeof (gint);
break;
default:
GST_WARNING ("incomplete implementation for paramspec type '%s'",
G_PARAM_SPEC_TYPE_NAME (GST_CONTROL_BINDING_PSPEC (self)));
GST_CONTROL_BINDING_PSPEC (self) = NULL;
break;
}
}
return (GObject *) self;
}
/**
* gst_control_binding_get_g_value_array:
* @binding: the control binding
* @timestamp: the time that should be processed
* @interval: the time spacing between subsequent values
* @n_values: the number of values
* @values: array to put control-values in
*
* Gets a number of #GValues for the given controlled property starting at the
* requested time. The array @values need to hold enough space for @n_values of
* #GValue.
*
* This function is useful if one wants to e.g. draw a graph of the control
* curve or apply a control curve sample by sample.
*
* Returns: %TRUE if the given array could be filled, %FALSE otherwise
*/
gboolean
gst_control_binding_get_g_value_array (GstControlBinding * binding,
GstClockTime timestamp, GstClockTime interval, guint n_values,
GValue * values)
{
GstControlBindingClass *klass;
gboolean ret = FALSE;
g_return_val_if_fail (GST_IS_CONTROL_BINDING (binding), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE);
g_return_val_if_fail (values, FALSE);
klass = GST_CONTROL_BINDING_GET_CLASS (binding);
if (G_LIKELY (klass->get_g_value_array != NULL)) {
ret =
klass->get_g_value_array (binding, timestamp, interval, n_values,
values);
} else {
guint i;
GType type, base;
base = type = G_PARAM_SPEC_VALUE_TYPE (GST_CONTROL_BINDING_PSPEC (binding));
while ((type = g_type_parent (type)))
base = type;
GST_INFO_OBJECT (binding, "missing get_g_value_array implementation, we're "
"emulating it");
switch (base) {
case G_TYPE_INT:
CONVERT_ARRAY (int, INT);
break;
case G_TYPE_UINT:
CONVERT_ARRAY (uint, UINT);
break;
case G_TYPE_LONG:
CONVERT_ARRAY (long, LONG);
break;
case G_TYPE_ULONG:
CONVERT_ARRAY (ulong, ULONG);
break;
case G_TYPE_INT64:
CONVERT_ARRAY (int64, INT64);
break;
case G_TYPE_UINT64:
CONVERT_ARRAY (uint64, UINT64);
break;
case G_TYPE_FLOAT:
CONVERT_ARRAY (float, FLOAT);
break;
case G_TYPE_DOUBLE:
CONVERT_ARRAY (double, DOUBLE);
break;
case G_TYPE_BOOLEAN:
CONVERT_ARRAY (boolean, BOOLEAN);
break;
case G_TYPE_ENUM:
{
gint *v = g_new (gint, n_values);
ret = gst_control_binding_get_value_array (binding, timestamp, interval,
n_values, v);
if (ret) {
for (i = 0; i < n_values; i++) {
g_value_init (&values[i], type);
g_value_set_enum (&values[i], v[i]);
}
}
g_free (v);
}
break;
default:
GST_WARNING ("incomplete implementation for paramspec type '%s'",
G_PARAM_SPEC_TYPE_NAME (GST_CONTROL_BINDING_PSPEC (binding)));
GST_CONTROL_BINDING_PSPEC (binding) = NULL;
break;
}
}
return ret;
}
static GObject *
gstbt_direct_control_binding_constructor (GType type, guint n_construct_params,
GObjectConstructParam * construct_params)
{
GstBtDirectControlBinding *self;
self =
GSTBT_DIRECT_CONTROL_BINDING (G_OBJECT_CLASS (parent_class)->constructor
(type, n_construct_params, construct_params));
if (GST_CONTROL_BINDING_PSPEC (self)) {
GType type, base;
base = type = G_PARAM_SPEC_VALUE_TYPE (GST_CONTROL_BINDING_PSPEC (self));
g_value_init (&self->cur_value, type);
while ((type = g_type_parent (type)))
base = type;
GST_DEBUG (" using type %s", g_type_name (base));
/* select mapping function */
#define SET_CONVERT_FUNCTION(type) \
if (self->ABI.abi.want_absolute) { \
self->convert_g_value = abs_convert_g_value_to_##type; \
self->convert_value = abs_convert_value_to_##type; \
} \
else { \
self->convert_g_value = convert_g_value_to_##type; \
self->convert_value = convert_value_to_##type; \
} \
self->byte_size = sizeof (g##type);
switch (base) {
case G_TYPE_INT:
SET_CONVERT_FUNCTION (int);
break;
case G_TYPE_UINT:
SET_CONVERT_FUNCTION (uint);
break;
case G_TYPE_LONG:
SET_CONVERT_FUNCTION (long);
break;
case G_TYPE_ULONG:
SET_CONVERT_FUNCTION (ulong);
break;
case G_TYPE_INT64:
SET_CONVERT_FUNCTION (int64);
break;
case G_TYPE_UINT64:
SET_CONVERT_FUNCTION (uint64);
break;
case G_TYPE_FLOAT:
SET_CONVERT_FUNCTION (float);
break;
case G_TYPE_DOUBLE:
SET_CONVERT_FUNCTION (double);
break;
case G_TYPE_BOOLEAN:
self->convert_g_value = convert_g_value_to_boolean;
self->convert_value = convert_value_to_boolean;
self->byte_size = sizeof (gboolean);
break;
case G_TYPE_ENUM:
self->convert_g_value = convert_g_value_to_enum;
self->convert_value = convert_value_to_enum;
self->byte_size = sizeof (gint);
break;
default:
GST_WARNING ("incomplete implementation for paramspec type '%s'",
G_PARAM_SPEC_TYPE_NAME (GST_CONTROL_BINDING_PSPEC (self)));
GST_CONTROL_BINDING_PSPEC (self) = NULL;
break;
}
}
return (GObject *) self;
}
