From 761747760921b5c6b3f4899ca1c40e9aa27bc4a0 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 19 Jan 2017 21:07:22 +0100
Subject: Scale default Atom Ringbuffer size with samplerate

This increases the safe-margin for plugins producing more messages
sent to the plugin GUI (usually fixed ~25Hz updates)
---
 libs/ardour/lv2_plugin.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'libs/ardour/lv2_plugin.cc')

diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index 24fa22dcfd..a1a7ce860a 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -1647,7 +1647,8 @@ LV2Plugin::write_from_ui(uint32_t       index,
 		if (_atom_ev_buffers && _atom_ev_buffers[0]) {
 			bufsiz =  lv2_evbuf_get_capacity(_atom_ev_buffers[0]);
 		}
-		rbs = max((size_t) bufsiz * 8, rbs);
+		int fact = ceilf(_session.frame_rate () / 3000.f);
+		rbs = max((size_t) bufsiz * std::max (8, fact), rbs);
 		_from_ui = new RingBuffer<uint8_t>(rbs);
 	}
 
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