client side view mode

Signed-off-by: 21pages <pages21@163.com>

src/flutter_ffi.rs

@@ -543,6 +543,12 @@ pub fn session_set_size(_id: String, _width: i32, _height: i32) {
     }
 }
 
+pub fn session_set_view_only(id: String, view_only: bool) {
+    if let Some(session) = SESSIONS.read().unwrap().get(&id) {
+        session.set_view_only(view_only);
+    }
+}
+
 pub fn main_get_sound_inputs() -> Vec<String> {
     #[cfg(not(any(target_os = "android", target_os = "ios")))]
     return get_sound_inputs();