Add gain setting callback to xas_object

2 files changed, 13 insertions, 4 deletions

diff --git a/include/xas/object.h b/include/xas/object.h
index b8b713b..19a479a 100644
--- a/include/xas/object.h
+++ b/include/xas/object.h
@@ -7,13 +7,18 @@ typedef int (*xas_object_start_callback)(xas_object *object);
 
 typedef int (*xas_object_stop_callback)(xas_object *object);
 
+typedef int (*xas_object_set_gain_callback)(xas_object *object, float gain);
+
 struct _xas_object {
-    xas_object_start_callback start;
-    xas_object_stop_callback  stop;
+    xas_object_start_callback    start;
+    xas_object_stop_callback     stop;
+    xas_object_set_gain_callback set_gain;
 };
 
 int xas_object_start(xas_object *object);
 
 int xas_object_stop(xas_object *object);
 
+int xas_object_set_gain(xas_object *object, float gain);
+
 #endif /* _XAS_OBJECT_H */
diff --git a/src/object.c b/src/object.c
index 55ea4af..f97deca 100644
--- a/src/object.c
+++ b/src/object.c
@@ -1,9 +1,13 @@
 #include <xas/object.h>
 
 int xas_object_start(xas_object *object) {
-    object->start(object);
+    return object->start(object);
 }
 
 int xas_object_stop(xas_object *object) {
-    object->stop(object);
+    return object->stop(object);
+}
+
+int xas_object_set_gain(xas_object *object, float gain) {
+    return object->set_gain(object, gain);
 }