Patch to the trunk to linux-caputre.so to work with latest release.

obs-pipewire-backport.diff

diff -u '--color=auto' -r obs-studio-3514f4fea5ead7aa15f1e57934a86a55b579fed0/plugins/linux-capture/linux-capture.c obs-studio/plugins/linux-capture/linux-capture.c
--- obs-studio-3514f4fea5ead7aa15f1e57934a86a55b579fed0/plugins/linux-capture/linux-capture.c	2021-05-07 05:58:14.000000000 +0900
+++ obs-studio/plugins/linux-capture/linux-capture.c	2021-05-08 15:51:04.547014308 +0900
@@ -26,11 +26,11 @@
 MODULE_EXPORT const char *obs_module_description(void)
 {
 #ifdef ENABLE_PIPEWIRE
-	if (obs_get_nix_platform() != OBS_NIX_PLATFORM_X11_GLX)
+//	if (obs_get_nix_platform() != OBS_NIX_PLATFORM_X11_GLX)
 		return "PipeWire based window/screen capture for X11 and Wayland";
-	else
+//	else
 #endif
-		return "xcomposite/xshm based window/screen capture for X11";
+//		return "xcomposite/xshm based window/screen capture for X11";
 }
 
 extern struct obs_source_info xshm_input;
@@ -40,24 +40,24 @@
 
 bool obs_module_load(void)
 {
-	if (obs_get_nix_platform() == OBS_NIX_PLATFORM_X11_GLX) {
-		obs_register_source(&xshm_input);
-		xcomposite_load();
+//	if (obs_get_nix_platform() == OBS_NIX_PLATFORM_X11_GLX) {
+//		obs_register_source(&xshm_input);
+//		xcomposite_load();
 #ifdef ENABLE_PIPEWIRE
-	} else {
+//	} else {
 		pipewire_capture_load();
 #endif
-	}
+//	}
 
 	return true;
 }
 
 void obs_module_unload(void)
 {
-	if (obs_get_nix_platform() == OBS_NIX_PLATFORM_X11_GLX)
-		xcomposite_unload();
+//	if (obs_get_nix_platform() == OBS_NIX_PLATFORM_X11_GLX)
+//		xcomposite_unload();
 #ifdef ENABLE_PIPEWIRE
-	else
+//	else
 		pipewire_capture_unload();
 #endif
 }
diff -u '--color=auto' -r obs-studio-3514f4fea5ead7aa15f1e57934a86a55b579fed0/plugins/linux-capture/pipewire-capture.c obs-studio/plugins/linux-capture/pipewire-capture.c
--- obs-studio-3514f4fea5ead7aa15f1e57934a86a55b579fed0/plugins/linux-capture/pipewire-capture.c	2021-05-07 05:58:14.000000000 +0900
+++ obs-studio/plugins/linux-capture/pipewire-capture.c	2021-05-08 16:26:27.360434893 +0900
@@ -104,6 +104,7 @@
 	obs_pipewire_video_render(data, effect);
 }
 
+// old struct (avoids buffer overflow detection)
 void pipewire_capture_load(void)
 {
 	// Desktop capture
@@ -124,7 +125,8 @@
 		.video_render = pipewire_capture_video_render,
 		.icon_type = OBS_ICON_TYPE_DESKTOP_CAPTURE,
 	};
-	obs_register_source(&pipewire_desktop_capture_info);
+	// The struct size of that in previous release was 384.
+	obs_register_source_s(&pipewire_desktop_capture_info, 384);
 
 	// Window capture
 	const struct obs_source_info pipewire_window_capture_info = {
@@ -144,7 +146,8 @@
 		.video_render = pipewire_capture_video_render,
 		.icon_type = OBS_ICON_TYPE_WINDOW_CAPTURE,
 	};
-	obs_register_source(&pipewire_window_capture_info);
+
+	obs_register_source_s(&pipewire_window_capture_info, 384);
 
 	pw_init(NULL, NULL);
 }