From 3f7356f6f3b1825d53e41abe52aa4f16434ca75d Mon Sep 17 00:00:00 2001
From: "SND\\weimingzhi_cp"
 <SND\weimingzhi_cp@e17a0e51-4ae3-4d35-97c3-1a29b211df97>
Date: Sun, 1 Aug 2010 11:11:29 +0000
Subject: dfinput: only accept axis input when the current axis position is off
 enough from previous or initial position in config dialog box.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@55344 e17a0e51-4ae3-4d35-97c3-1a29b211df97
---
 macosx/plugins/DFInput/macsrc/cfg.c | 32 ++++++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

(limited to 'macosx/plugins/DFInput/macsrc/cfg.c')

diff --git a/macosx/plugins/DFInput/macsrc/cfg.c b/macosx/plugins/DFInput/macsrc/cfg.c
index f9b897b8..9465426c 100644
--- a/macosx/plugins/DFInput/macsrc/cfg.c
+++ b/macosx/plugins/DFInput/macsrc/cfg.c
@@ -559,6 +559,28 @@ int CheckKeyDown() {
 	return 0;
 }
 
+static Sint16 InitialAxisPos[256], PrevAxisPos[256];
+
+#define NUM_AXES(js) (SDL_JoystickNumAxes(js) > 256 ? 256 : SDL_JoystickNumAxes(js))
+
+void InitAxisPos(int padnum) {
+	int i;
+	SDL_Joystick *js;
+
+	if (g.cfg.PadDef[padnum].DevNum >= 0) {
+		js = SDL_JoystickOpen(g.cfg.PadDef[padnum].DevNum);
+		SDL_JoystickEventState(SDL_IGNORE);
+	} else return;
+
+	SDL_JoystickUpdate();
+
+	for (i = 0; i < NUM_AXES(js); i++) {
+		InitialAxisPos[i] = PrevAxisPos[i] = SDL_JoystickGetAxis(js, i);
+	}
+
+	SDL_JoystickClose(js);
+}
+
 int ReadDKeyEvent(int padnum, int key) {
 	SDL_Joystick *js;
 	int i, changed = 0, t;
@@ -585,14 +607,15 @@ int ReadDKeyEvent(int padnum, int key) {
 				}
 			}
 
-			for (i = 0; i < SDL_JoystickNumAxes(js); i++) {
+			for (i = 0; i < NUM_AXES(js); i++) {
 				axis = SDL_JoystickGetAxis(js, i);
-				if (abs(axis) > 16383) {
+				if (abs(axis) > 16383 && (abs(axis - PrevAxisPos[i]) > 4096 || abs(axis - InitialAxisPos[i]) > 4096)) {
 					g.cfg.PadDef[padnum].KeyDef[key].JoyEvType = AXIS;
 					g.cfg.PadDef[padnum].KeyDef[key].J.Axis = (i + 1) * (axis > 0 ? 1 : -1);
 					changed = 1;
 					goto end;
 				}
+				PrevAxisPos[i] = axis;
 			}
 
 			for (i = 0; i < SDL_JoystickNumHats(js); i++) {
@@ -667,14 +690,15 @@ int ReadAnalogEvent(int padnum, int analognum, int analogdir) {
 				}
 			}
 
-			for (i = 0; i < SDL_JoystickNumAxes(js); i++) {
+			for (i = 0; i < NUM_AXES(js); i++) {
 				axis = SDL_JoystickGetAxis(js, i);
-				if (abs(axis) > 16383) {
+				if (abs(axis) > 16383 && (abs(axis - PrevAxisPos[i]) > 4096 || abs(axis - InitialAxisPos[i]) > 4096)) {
 					g.cfg.PadDef[padnum].AnalogDef[analognum][analogdir].JoyEvType = AXIS;
 					g.cfg.PadDef[padnum].AnalogDef[analognum][analogdir].J.Axis = (i + 1) * (axis > 0 ? 1 : -1);
 					changed = 1;
 					goto end;
 				}
+				PrevAxisPos[i] = axis;
 			}
 
 			for (i = 0; i < SDL_JoystickNumHats(js); i++) {
-- 
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