Create outputchooser function in wlr_screencast.c

include/wlr_screencast.h

@@ -15,6 +15,7 @@ struct xdpw_wlr_output *xdpw_wlr_output_find_by_name(struct wl_list *output_list
 struct xdpw_wlr_output *xdpw_wlr_output_first(struct wl_list *output_list);
 struct xdpw_wlr_output *xdpw_wlr_output_find(struct xdpw_screencast_context *ctx,
 	struct wl_output *out, uint32_t id);
+struct xdpw_wlr_output *xdpw_wlr_output_chooser(struct wl_list *output_list);
 
 void xdpw_wlr_frame_free(struct xdpw_screencast_instance *cast);
 void xdpw_wlr_register_cb(struct xdpw_screencast_instance *cast);

src/screencast/screencast.c

@@ -55,7 +55,7 @@ int setup_outputs(struct xdpw_screencast_context *ctx, struct xdpw_session *sess
 			abort();
 		}
 	} else {
-		out = xdpw_wlr_output_first(&ctx->output_list);
+		out = xdpw_wlr_output_chooser(&ctx->output_list);
 		if (!out) {
 			logprint(ERROR, "wlroots: no output found");
 			abort();

src/screencast/wlr_screencast.c

@@ -295,6 +295,23 @@ struct xdpw_wlr_output *xdpw_wlr_output_first(struct wl_list *output_list) {
 	return NULL;
 }
 
+struct xdpw_wlr_output *xdpw_wlr_output_chooser(struct wl_list *output_list) {
+
+	logprint(DEBUG, "wlroots: output chooser called");
+	struct xdpw_wlr_output* (*chooser_functions[])(struct wl_list*) = {
+		xdpw_wlr_output_first
+	};
+	int N = sizeof(chooser_functions)/sizeof(chooser_functions[0]);
+	struct xdpw_wlr_output *output;
+	for (int i = 0; i<N; i++) {
+		output = chooser_functions[i](output_list);
+		if (output != NULL) {
+			return output;
+		}
+	}
+	return output;
+}
+
 struct xdpw_wlr_output *xdpw_wlr_output_find_by_name(struct wl_list *output_list,
 		const char* name) {
 	struct xdpw_wlr_output *output, *tmp;