https://webrtc.googlesource.com/src/+/0a9787897f3d36055130b0532967d31c31e8408f

Pipewire 1.4 changed some functions from taking void*
to taking the actual type they expect, which makes
some code that built with 1.2 no longer build with 1.4.

For older versions, this is effectively a no-op.

--- a/third_party/webrtc/modules/video_capture/linux/pipewire_session.cc
+++ b/third_party/webrtc/modules/video_capture/linux/pipewire_session.cc

@@ -87,7 +87,7 @@
       .param = OnNodeParam,
   };
 
-  pw_node_add_listener(proxy_, &node_listener_, &node_events, this);
+  pw_node_add_listener(reinterpret_cast<pw_node*>(proxy_), &node_listener_, &node_events, this);
 }
 
 // static
@@ -119,7 +119,7 @@
       uint32_t id = info->params[i].id;
       if (id == SPA_PARAM_EnumFormat &&
           info->params[i].flags & SPA_PARAM_INFO_READ) {
-        pw_node_enum_params(that->proxy_, 0, id, 0, UINT32_MAX, nullptr);
+        pw_node_enum_params(reinterpret_cast<pw_node*>(that->proxy_), 0, id, 0, UINT32_MAX, nullptr);
         break;
       }
     }