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videobalance: Emit "value-changed" signal of color balance interface when values change

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This commit is contained in:
Sebastian Dröge 2010-04-18 22:06:44 +02:00
parent e13cd55fab
commit ea06bd33f8
1 changed files with 30 additions and 0 deletions
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30
gst/videofilter/gstvideobalance.c
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@ -518,36 +518,59 @@ gst_video_balance_colorbalance_init (GstColorBalanceClass * iface)
iface->get_value = gst_video_balance_colorbalance_get_value;
}
static GstColorBalanceChannel *
gst_video_balance_find_channel (GstVideoBalance * balance, const gchar * label)
{
GList *l;
for (l = balance->channels; l; l = l->next) {
GstColorBalanceChannel *channel = l->data;
if (g_ascii_strcasecmp (channel->label, label) == 0)
return channel;
}
return NULL;
}
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;
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:
@ -556,6 +579,13 @@ gst_video_balance_set_property (GObject * object, guint prop_id,
}
gst_video_balance_update_properties (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