internal/pipewire: export Registry::Destroy

This handles the error returned by Sync.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pipewire/pipewire.go

@@ -636,7 +636,7 @@ func (ctx *Context) roundtrip() (err error) {
 }
 
 // currentSeq returns the current sequence number.
-// This must only be called from eventProxy.consume.
+// This must only be called immediately after queueing a message.
 func (ctx *Context) currentSeq() Int { return ctx.sequence - 1 }
 
 // currentRemoteSeq returns the current remote sequence number.
@@ -786,6 +786,18 @@ func (ctx *Context) Close() (err error) {
 	}
 }
 
+// A PermissionError describes an error emitted by the server when trying to
+// perform an operation that the client has no permission for.
+type PermissionError struct {
+	// The id of the resource (proxy if emitted by the client) that is in error.
+	ID Int `json:"id"`
+	// An error message.
+	Message string `json:"message"`
+}
+
+func (*PermissionError) Unwrap() error   { return syscall.EPERM }
+func (e *PermissionError) Error() string { return e.Message }
+
 // Remote is the environment (sic) with the remote name.
 const Remote = "PIPEWIRE_REMOTE"