Added rewind feature. Currently only supported via GTK and needs SHM. Rewind save state depth is configured via RewindCount config param. Recommended value is 200 or so -> uses less than 1G of memory

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@88433 e17a0e51-4ae3-4d35-97c3-1a29b211df97

3 files changed, 13 insertions, 2 deletions

diff --git a/plugins/dfinput/cfg-gtk.c b/plugins/dfinput/cfg-gtk.c
index 7b5df6c2..80443f3a 100755
--- a/plugins/dfinput/cfg-gtk.c
+++ b/plugins/dfinput/cfg-gtk.c
@@ -60,7 +60,8 @@ const char *EmuKeyText[EMU_TOTAL] = {
 	N_("Load state"),
 	N_("Save state"),
 	N_("Screenshot"),
-	N_("Escape")
+	N_("Escape"),
+	N_("Rewind")
 };
 
 const char *DPadText[DKEY_TOTAL] = {
@@ -403,7 +404,7 @@ static void ReadDKeyEvent(int padnum, int key) {
 
 			for (i = 0; i < numAxes; i++) {
 				axis = SDL_JoystickGetAxis(js, i);
-				if (abs(axis) > 16383 && (abs(axis - InitAxisPos[i]) > 4096 || abs(axis - PrevAxisPos[i]) > 4096)) {
+				if (abs(axis) > 16383 && (abs(axis - InitAxisPos[i]) > 4096 || abs(axis - PrevAxisPos[i]) > 4096) && (abs(axis) < 32768)) {
 					keydef->JoyEvType = AXIS;
 					keydef->J.Axis = (i + 1) * (axis > 0 ? 1 : -1);
 					goto end;
diff --git a/plugins/dfinput/cfg.c b/plugins/dfinput/cfg.c
index 6e45a122..2757bd74 100755
--- a/plugins/dfinput/cfg.c
+++ b/plugins/dfinput/cfg.c
@@ -125,6 +125,7 @@ static void SetDefaultConfig() {
 	g.cfg.E.EmuDef[EMU_INCREMENTSTATE].EmuKeyEvent = XK_F2;
 	g.cfg.E.EmuDef[EMU_SCREENSHOT].EmuKeyEvent = XK_F8;
 	g.cfg.E.EmuDef[EMU_ESCAPE].EmuKeyEvent = XK_Escape;
+	g.cfg.E.EmuDef[EMU_REWIND].EmuKeyEvent = XK_BackSpace;
 }
 
 void LoadPADConfig() {
@@ -193,6 +194,11 @@ void LoadPADConfig() {
 			g.cfg.E.EmuDef[EMU_ESCAPE].Mapping.Key = a;
 			g.cfg.E.EmuDef[EMU_ESCAPE].Mapping.JoyEvType = b;
 			g.cfg.E.EmuDef[EMU_ESCAPE].Mapping.J.d = c;
+		} else if (strncmp(buf, "EMU_REWIND=", 11) == 0) {
+			sscanf(buf, "EMU_REWIND=%d,%d,%d", &a, &b, &c);
+			g.cfg.E.EmuDef[EMU_REWIND].Mapping.Key = a;
+			g.cfg.E.EmuDef[EMU_REWIND].Mapping.JoyEvType = b;
+			g.cfg.E.EmuDef[EMU_REWIND].Mapping.J.d = c;
 		} else if (strncmp(buf, "Select=", 7) == 0) {
 			sscanf(buf, "Select=%d,%d,%d", &a, &b, &c);
 			g.cfg.PadDef[current].KeyDef[DKEY_SELECT].Key = a;
@@ -428,5 +434,8 @@ void SavePADConfig() {
 	fprintf(fp, "EMU_ESCAPE=%d,%d,%d\n", g.cfg.E.EmuDef[EMU_ESCAPE].Mapping.Key,
 			g.cfg.E.EmuDef[EMU_ESCAPE].Mapping.JoyEvType,
 			g.cfg.E.EmuDef[EMU_ESCAPE].Mapping.J.d);
+	fprintf(fp, "EMU_REWIND=%d,%d,%d\n", g.cfg.E.EmuDef[EMU_REWIND].Mapping.Key,
+			g.cfg.E.EmuDef[EMU_REWIND].Mapping.JoyEvType,
+			g.cfg.E.EmuDef[EMU_REWIND].Mapping.J.d);
 	fclose(fp);
 }
diff --git a/plugins/dfinput/pad.h b/plugins/dfinput/pad.h
index 9e72bf88..205bae41 100755
--- a/plugins/dfinput/pad.h
+++ b/plugins/dfinput/pad.h
@@ -119,6 +119,7 @@ enum {
 	EMU_SAVESTATE,
 	EMU_SCREENSHOT,
 	EMU_ESCAPE,
+	EMU_REWIND,
 
 	EMU_TOTAL
 };