More gracefully handle plugin => UI message overflows.

git-svn-id: http://svn.drobilla.net/lad/trunk/jalv@4083 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 5 insertions, 2 deletions

diff --git a/src/jalv.c b/src/jalv.c
index 85ef155..60b4f02 100644
--- a/src/jalv.c
+++ b/src/jalv.c
@@ -472,8 +472,7 @@ jack_process_cb(jack_nframes_t nframes, void* data)
 			     i = lv2_evbuf_next(i)) {
 				uint32_t frames, subframes, type, size;
 				uint8_t* data;
-				lv2_evbuf_get(i, &frames, &subframes,
-				              &type, &size, &data);
+				lv2_evbuf_get(i, &frames, &subframes, &type, &size, &data);
 				assert(size > 0);
 				// FIXME: check type
 				jack_midi_event_write(buf, frames, data, size);
@@ -488,6 +487,10 @@ jack_process_cb(jack_nframes_t nframes, void* data)
 					LV2_Atom* atom = (LV2_Atom*)ev->body;
 					atom->type = type;
 					atom->size = size;
+					if (jack_ringbuffer_write_space(host->plugin_events)
+					    < sizeof(buf) + size) {
+						break;
+					}
 					jack_ringbuffer_write(host->plugin_events, buf, sizeof(buf));
 					/* TODO: race, ensure reader handles this correctly */
 					jack_ringbuffer_write(host->plugin_events, (void*)data, size);