From 33bfe681c94f7c9ba36a683521daf74b5834b3e9 Mon Sep 17 00:00:00 2001
From: Len Ovens <len@ovenwerks.net>
Date: Fri, 23 Jun 2017 18:08:04 -0700
Subject: OSC: Allow /bank_up to accept -1 as well as 1 so encoder can work.

---
 libs/surfaces/osc/osc.cc | 19 ++++++++++++++++++-
 libs/surfaces/osc/osc.h  |  2 ++
 2 files changed, 20 insertions(+), 1 deletion(-)

(limited to 'libs')

diff --git a/libs/surfaces/osc/osc.cc b/libs/surfaces/osc/osc.cc
index 7d44efda26..9818514e36 100644
--- a/libs/surfaces/osc/osc.cc
+++ b/libs/surfaces/osc/osc.cc
@@ -530,7 +530,7 @@ OSC::register_callbacks()
 		REGISTER_CALLBACK (serv, "/scroll_dn_1_page", "f", scroll_dn_1_page);
 		REGISTER_CALLBACK (serv, "/scroll_dn_1_page", "", scroll_dn_1_page);
 		REGISTER_CALLBACK (serv, "/bank_up", "", bank_up);
-		REGISTER_CALLBACK (serv, "/bank_up", "f", bank_up);
+		REGISTER_CALLBACK (serv, "/bank_up", "f", bank_delta);
 		REGISTER_CALLBACK (serv, "/bank_down", "", bank_down);
 		REGISTER_CALLBACK (serv, "/bank_down", "f", bank_down);
 
@@ -1908,6 +1908,23 @@ OSC::bank_up (lo_message msg)
 	return 0;
 }
 
+int
+OSC::bank_delta (float delta, lo_message msg)
+{
+	if (!session) {
+		return -1;
+	}
+	OSCSurface *s = get_surface(get_address (msg));
+	uint32_t new_bank = s->bank + (s->bank_size * (int) delta);
+	if ((int)new_bank < 1) {
+		new_bank = 1;
+	}
+	if (new_bank != s->bank) {
+		set_bank (new_bank, msg);
+	}
+	return 0;
+}
+
 int
 OSC::bank_down (lo_message msg)
 {
diff --git a/libs/surfaces/osc/osc.h b/libs/surfaces/osc/osc.h
index 805a3df663..06a2cdb6fc 100644
--- a/libs/surfaces/osc/osc.h
+++ b/libs/surfaces/osc/osc.h
@@ -419,6 +419,7 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
 	PATH_CALLBACK1_MSG(scrub,f);
 	PATH_CALLBACK1_MSG(jog,f);
 	PATH_CALLBACK1_MSG(jog_mode,f);
+	PATH_CALLBACK1_MSG(bank_delta,f);
 	PATH_CALLBACK1_MSG(sel_recenable,i);
 	PATH_CALLBACK1_MSG(sel_recsafe,i);
 	PATH_CALLBACK1_MSG(sel_mute,i);
@@ -589,6 +590,7 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
 	int set_bank (uint32_t bank_start, lo_message msg);
 	int _set_bank (uint32_t bank_start, lo_address addr);
 	int bank_up (lo_message msg);
+	int bank_delta (float delta, lo_message msg);
 	int bank_down (lo_message msg);
 	int set_surface (uint32_t b_size, uint32_t strips, uint32_t fb, uint32_t gmode, uint32_t se_size, uint32_t pi_size, lo_message msg);
 	int set_surface_bank_size (uint32_t bs, lo_message msg);
-- 
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