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-rw-r--r--src/uca-camera.c99
-rw-r--r--src/uca-camera.h9
2 files changed, 89 insertions, 19 deletions
diff --git a/src/uca-camera.c b/src/uca-camera.c
index 27af765..fce3d12 100644
--- a/src/uca-camera.c
+++ b/src/uca-camera.c
@@ -76,6 +76,11 @@ GQuark uca_unit_quark ()
return g_quark_from_static_string ("uca-unit-quark");
}
+GQuark uca_writable_quark ()
+{
+ return g_quark_from_static_string ("uca-writable-quark");
+}
+
enum {
LAST_SIGNAL
};
@@ -980,6 +985,26 @@ uca_camera_grab (UcaCamera *camera, gpointer data, GError **error)
return result;
}
+static GParamSpec *
+get_param_spec_by_name (UcaCamera *camera,
+ const gchar *prop_name)
+{
+ UcaCameraClass *klass;
+ GObjectClass *oclass;
+ GParamSpec *pspec;
+
+ klass = UCA_CAMERA_GET_CLASS (camera);
+ oclass = G_OBJECT_CLASS (klass);
+ pspec = g_object_class_find_property (oclass, prop_name);
+
+ if (pspec == NULL) {
+ g_warning ("Camera does not have property `%s'", prop_name);
+ return NULL;
+ }
+
+ return pspec;
+}
+
/**
* uca_camera_register_unit:
* @camera: A #UcaCamera object
@@ -995,20 +1020,12 @@ uca_camera_register_unit (UcaCamera *camera,
const gchar *prop_name,
UcaUnit unit)
{
- UcaCameraClass *klass;
- GObjectClass *oclass;
GParamSpec *pspec;
- klass = UCA_CAMERA_GET_CLASS (camera);
- oclass = G_OBJECT_CLASS (klass);
- pspec = g_object_class_find_property (oclass, prop_name);
+ pspec = get_param_spec_by_name (camera, prop_name);
- if (pspec == NULL) {
- g_warning ("Camera does not have property `%s'", prop_name);
- return;
- }
-
- uca_camera_set_property_unit (pspec, unit);
+ if (pspec != NULL)
+ uca_camera_set_property_unit (pspec, unit);
}
/**
@@ -1026,21 +1043,65 @@ UcaUnit
uca_camera_get_unit (UcaCamera *camera,
const gchar *prop_name)
{
- UcaCameraClass *klass;
- GObjectClass *oclass;
GParamSpec *pspec;
gpointer data;
- klass = UCA_CAMERA_GET_CLASS (camera);
- oclass = G_OBJECT_CLASS (klass);
- pspec = g_object_class_find_property (oclass, prop_name);
+ pspec = get_param_spec_by_name (camera, prop_name);
- if (pspec == NULL) {
- g_warning ("Camera does not have property `%s'", prop_name);
+ if (pspec == NULL)
return UCA_UNIT_NA;
- }
data = g_param_spec_get_qdata (pspec, UCA_UNIT_QUARK);
return data == NULL ? UCA_UNIT_NA : GPOINTER_TO_INT (data);
}
+/**
+ * uca_camera_set_writable:
+ * @camera: A #UcaCamera object
+ * @prop_name: Name of property
+ * @writable: %TRUE if property can be written during acquisition
+ *
+ * Sets a flag that defines if @prop_name can be written during an acquisition.
+ *
+ * Since: 1.6
+ */
+void
+uca_camera_set_writable (UcaCamera *camera,
+ const gchar *prop_name,
+ gboolean writable)
+{
+ GParamSpec *pspec;
+
+ pspec = get_param_spec_by_name (camera, prop_name);
+
+ if (pspec != NULL) {
+ if (g_param_spec_get_qdata (pspec, UCA_WRITABLE_QUARK) != NULL)
+ g_warning ("::%s is already fixed", pspec->name);
+ else
+ g_param_spec_set_qdata (pspec, UCA_WRITABLE_QUARK, GINT_TO_POINTER (writable));
+ }
+}
+
+/**
+ * uca_camera_is_writable_during_acquisition:
+ * @camera: A #UcaCamera object
+ * @prop_name: Name of property
+ *
+ * Check if @prop_name can be written at run-time. This is %FALSE if the
+ * property is read-only, if uca_camera_set_writable() has not been called or
+ * uca_camera_set_writable() was called with %FALSE.
+ *
+ * Returns: %TRUE if the property can be written at acquisition time.
+ * Since: 1.6
+ */
+gboolean
+uca_camera_is_writable_during_acquisition (UcaCamera *camera,
+ const gchar *prop_name)
+{
+ GParamSpec *pspec;
+
+ pspec = get_param_spec_by_name (camera, prop_name);
+
+ return (pspec->flags & G_PARAM_WRITABLE) &&
+ g_param_spec_get_qdata (pspec, UCA_WRITABLE_QUARK);
+}
diff --git a/src/uca-camera.h b/src/uca-camera.h
index f4030d6..d958870 100644
--- a/src/uca-camera.h
+++ b/src/uca-camera.h
@@ -31,9 +31,11 @@ G_BEGIN_DECLS
#define UCA_CAMERA_ERROR uca_camera_error_quark()
#define UCA_UNIT_QUARK uca_unit_quark()
+#define UCA_WRITABLE_QUARK uca_writable_quark()
GQuark uca_camera_error_quark(void);
GQuark uca_unit_quark(void);
+GQuark uca_writable_quark(void);
typedef enum {
UCA_CAMERA_ERROR_NOT_FOUND,
@@ -162,6 +164,13 @@ void uca_camera_register_unit (UcaCamera *camera,
UcaUnit unit);
UcaUnit uca_camera_get_unit (UcaCamera *camera,
const gchar *prop_name);
+void uca_camera_set_writable (UcaCamera *camera,
+ const gchar *prop_name,
+ gboolean writable);
+gboolean uca_camera_is_writable_during_acquisition
+ (UcaCamera *camera,
+ const gchar *prop_name);
+
GType uca_camera_get_type(void);