static void
gst_video_balance_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoBalance *src;
src = GST_VIDEO_BALANCE (object);
GST_DEBUG ("gst_video_balance_set_property");
switch (prop_id) {
case PROP_CONTRAST:
src->contrast = g_value_get_double (value);
break;
case PROP_BRIGHTNESS:
src->brightness = g_value_get_double (value);
break;
case PROP_HUE:
src->hue = g_value_get_double (value);
break;
case PROP_SATURATION:
src->saturation = g_value_get_double (value);
break;
default:
break;
}
gst_video_balance_update_properties (src);
}
static void
gst_video_balance_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoBalance *balance = GST_VIDEO_BALANCE (object);
gdouble d;
const gchar *label = NULL;
GST_BASE_TRANSFORM_LOCK (balance);
GST_OBJECT_LOCK (balance);
switch (prop_id) {
case PROP_CONTRAST:
d = g_value_get_double (value);
GST_DEBUG_OBJECT (balance, "Changing contrast from %lf to %lf",
balance->contrast, d);
if (d != balance->contrast)
label = "CONTRAST";
balance->contrast = d;
break;
case PROP_BRIGHTNESS:
d = g_value_get_double (value);
GST_DEBUG_OBJECT (balance, "Changing brightness from %lf to %lf",
balance->brightness, d);
if (d != balance->brightness)
label = "BRIGHTNESS";
balance->brightness = d;
break;
case PROP_HUE:
d = g_value_get_double (value);
GST_DEBUG_OBJECT (balance, "Changing hue from %lf to %lf", balance->hue,
d);
if (d != balance->hue)
label = "HUE";
balance->hue = d;
break;
case PROP_SATURATION:
d = g_value_get_double (value);
GST_DEBUG_OBJECT (balance, "Changing saturation from %lf to %lf",
balance->saturation, d);
if (d != balance->saturation)
label = "SATURATION";
balance->saturation = d;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
gst_video_balance_update_properties (balance);
GST_OBJECT_UNLOCK (balance);
GST_BASE_TRANSFORM_UNLOCK (balance);
if (label) {
GstColorBalanceChannel *channel =
gst_video_balance_find_channel (balance, label);
gst_color_balance_value_changed (GST_COLOR_BALANCE (balance), channel,
gst_color_balance_get_value (GST_COLOR_BALANCE (balance), channel));
}
}
static void
gst_video_balance_colorbalance_set_value (GstColorBalance * balance,
GstColorBalanceChannel * channel, gint value)
{
GstVideoBalance *vb = GST_VIDEO_BALANCE (balance);
gdouble new_val;
gboolean changed = FALSE;
g_return_if_fail (vb != NULL);
g_return_if_fail (GST_IS_VIDEO_BALANCE (vb));
g_return_if_fail (GST_IS_VIDEO_FILTER (vb));
g_return_if_fail (channel->label != NULL);
GST_BASE_TRANSFORM_LOCK (vb);
GST_OBJECT_LOCK (vb);
if (!g_ascii_strcasecmp (channel->label, "HUE")) {
new_val = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
changed = new_val != vb->hue;
vb->hue = new_val;
} else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
new_val = (value + 1000.0) * 2.0 / 2000.0;
changed = new_val != vb->saturation;
vb->saturation = new_val;
} else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
new_val = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
changed = new_val != vb->brightness;
vb->brightness = new_val;
} else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
new_val = (value + 1000.0) * 2.0 / 2000.0;
changed = new_val != vb->contrast;
vb->contrast = new_val;
}
if (changed)
gst_video_balance_update_properties (vb);
GST_OBJECT_UNLOCK (vb);
GST_BASE_TRANSFORM_UNLOCK (vb);
if (changed) {
gst_color_balance_value_changed (balance, channel,
gst_color_balance_get_value (balance, channel));
}
}
static void
gst_video_balance_init (GTypeInstance * instance, gpointer g_class)
{
GstVideoBalance *videobalance = GST_VIDEO_BALANCE (instance);
char *channels[4] = { "HUE", "SATURATION",
"BRIGHTNESS", "CONTRAST"
};
gint i;
GST_DEBUG ("gst_video_balance_init");
/* do stuff */
videobalance->contrast = DEFAULT_PROP_CONTRAST;
videobalance->brightness = DEFAULT_PROP_BRIGHTNESS;
videobalance->hue = DEFAULT_PROP_HUE;
videobalance->saturation = DEFAULT_PROP_SATURATION;
gst_video_balance_update_properties (videobalance);
videobalance->tabley = g_new (guint8, 256);
videobalance->tableu = g_new (guint8 *, 256);
videobalance->tablev = g_new (guint8 *, 256);
for (i = 0; i < 256; i++) {
videobalance->tableu[i] = g_new (guint8, 256);
videobalance->tablev[i] = g_new (guint8, 256);
}
/* Generate the channels list */
for (i = 0; i < (sizeof (channels) / sizeof (char *)); i++) {
GstColorBalanceChannel *channel;
channel = g_object_new (GST_TYPE_COLOR_BALANCE_CHANNEL, NULL);
channel->label = g_strdup (channels[i]);
channel->min_value = -1000;
channel->max_value = 1000;
videobalance->channels = g_list_append (videobalance->channels, channel);
}
}
static void
gst_video_balance_init (GstVideoBalance * videobalance,
GstVideoBalanceClass * klass)
{
const gchar *channels[4] = { "HUE", "SATURATION",
"BRIGHTNESS", "CONTRAST"
};
gint i;
/* Initialize propertiews */
videobalance->contrast = DEFAULT_PROP_CONTRAST;
videobalance->brightness = DEFAULT_PROP_BRIGHTNESS;
videobalance->hue = DEFAULT_PROP_HUE;
videobalance->saturation = DEFAULT_PROP_SATURATION;
videobalance->tableu[0] = g_new (guint8, 256 * 256 * 2);
for (i = 0; i < 256; i++) {
videobalance->tableu[i] =
videobalance->tableu[0] + i * 256 * sizeof (guint8);
videobalance->tablev[i] =
videobalance->tableu[0] + 256 * 256 * sizeof (guint8) +
i * 256 * sizeof (guint8);
}
gst_video_balance_update_properties (videobalance);
/* Generate the channels list */
for (i = 0; i < G_N_ELEMENTS (channels); i++) {
GstColorBalanceChannel *channel;
channel = g_object_new (GST_TYPE_COLOR_BALANCE_CHANNEL, NULL);
channel->label = g_strdup (channels[i]);
channel->min_value = -1000;
channel->max_value = 1000;
videobalance->channels = g_list_append (videobalance->channels, channel);
}
}
static void
gst_video_balance_colorbalance_set_value (GstColorBalance * balance,
GstColorBalanceChannel * channel, gint value)
{
GstVideoBalance *vb = GST_VIDEO_BALANCE (balance);
g_return_if_fail (vb != NULL);
g_return_if_fail (GST_IS_VIDEO_BALANCE (vb));
g_return_if_fail (GST_IS_VIDEO_FILTER (vb));
g_return_if_fail (channel->label != NULL);
if (!g_ascii_strcasecmp (channel->label, "HUE")) {
vb->hue = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
} else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
vb->saturation = (value + 1000.0) * 2.0 / 2000.0;
} else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
vb->brightness = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
} else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
vb->contrast = (value + 1000.0) * 2.0 / 2000.0;
}
gst_video_balance_update_properties (vb);
}
