From fa60c29eb5445171d6d55168c607d869433ed282 Mon Sep 17 00:00:00 2001
From: Sorgelig <pour.garbage@gmail.com>
Date: Sat, 1 Jan 2022 20:57:37 +0800
Subject: [PATCH] input: use -128..+127 range for PSX.

---
 input.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/input.cpp b/input.cpp
index 9115466..b6d3cf3 100644
--- a/input.cpp
+++ b/input.cpp
@@ -2799,10 +2799,11 @@ static void input_cb(struct input_event *ev, struct input_absinfo *absinfo, int
 					else value = 0;
 				}
 
-				value = (value * 127) / hrange;
+				int range = is_psx() ? 128 : 127;
+				value = (value * range) / hrange;
 
 				//final check to eliminate additive error
-				if (value < -127) value = -127;
+				if (value < -range) value = -range;
 				else if (value > 127) value = 127;
 
 				if (input[sub_dev].axis_pos[ev->code & 0xFF] == (int8_t)value) break;