pipewire: add enable/disable to meson for spa plugins

spa/plugins/audioconvert/fmtconvert.c

@@ -615,8 +615,6 @@ impl_node_port_set_param(struct spa_node *node,
 			 uint32_t id, uint32_t flags,
 			 const struct spa_pod *param)
 {
-	struct impl *this;
-
 	spa_return_val_if_fail(node != NULL, -EINVAL);
 
 	this = SPA_CONTAINER_OF(node, struct impl, node);

spa/plugins/ffmpeg/ffmpeg.c

@@ -84,7 +84,9 @@ int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t
 	static struct spa_handle_factory f;
 	static char name[128];
 
+  #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58, 9, 100)
 	av_register_all();
+  #endif
 
 	if (*index == 0) {
 		c = av_codec_next(NULL);

spa/plugins/meson.build

@@ -1,15 +1,33 @@
-subdir('alsa')
-subdir('audioconvert')
-subdir('audiomixer')
-subdir('audiotestsrc')
-if sbc_dep.found()
+if get_option('alsa')
+  subdir('alsa')
+endif
+if get_option('audioconvert')
+  subdir('audioconvert')
+endif
+if get_option('audiomixer')
+  subdir('audiomixer')
+endif
+if get_option('audiotestsrc')
+  subdir('audiotestsrc')
+endif
+if get_option('bluez5') and sbc_dep.found()
   subdir('bluez5')
 endif
-if avcodec_dep.found()
+if get_option('ffmpeg') and avcodec_dep.found()
   subdir('ffmpeg')
 endif
-subdir('support')
-subdir('test')
-subdir('videotestsrc')
-subdir('volume')
-subdir('v4l2')
+if get_option('support')
+  subdir('support')
+endif
+if get_option('test')
+  subdir('test')
+endif
+if get_option('videotestsrc')
+  subdir('videotestsrc')
+endif
+if get_option('volume')
+  subdir('volume')
+endif
+if get_option('v4l2')
+  subdir('v4l2')
+endif