client API: qthelper: add set_option_variant()

DOCS/client-api-changes.rst

@@ -30,6 +30,7 @@ API changes
           for slightly better error reporting on playback failure
         - add --stop-playback-on-init-failure option, and make it the default
           behavior for libmpv only
+        - add qthelper.hpp set_option_variant()
  1.8    - add qthelper.hpp
  1.7    - add mpv_command_node(), mpv_command_node_async()
  1.6    - modify "core-idle" property behavior

libmpv/qthelper.hpp

@@ -216,6 +216,16 @@ static inline int set_property_variant(mpv_handle *ctx, const QString &name,
     return mpv_set_property(ctx, name.toUtf8().data(), MPV_FORMAT_NODE, node.node());
 }
 
+/**
+ * Set the given option as mpv_node converted from the QVariant argument.
+ */
+static inline int set_option_variant(mpv_handle *ctx, const QString &name,
+                                     const QVariant &v)
+{
+    node_builder node(v);
+    return mpv_set_option(ctx, name.toUtf8().data(), MPV_FORMAT_NODE, node.node());
+}
+
 /**
  * mpv_command_node() equivalent. Returns QVariant() on error (and
  * unfortunately, the same on success).