From 6a4f55fa77aae25b01927e10dc0b2f710f1a12fd Mon Sep 17 00:00:00 2001
From: Dimitris Panokostas <midwan@gmail.com>
Date: Thu, 7 Feb 2019 23:38:38 +0100
Subject: [PATCH] Implemented Emulation Pause handling - Fixes #414

---
 src/filesys.cpp           | 17 +++++++++++++++++
 src/include/inputdevice.h |  4 ++++
 src/inputdevice.cpp       | 33 ++++++++++++++++++++++++++++++---
 3 files changed, 51 insertions(+), 3 deletions(-)

diff --git a/src/filesys.cpp b/src/filesys.cpp
index b95abe26..f09166a8 100644
--- a/src/filesys.cpp
+++ b/src/filesys.cpp
@@ -1467,6 +1467,23 @@ int filesys_eject (int nr)
 }
 
 static uae_u32 heartbeat;
+static int heartbeat_count, heartbeat_count_cont;
+static int heartbeat_task;
+
+bool filesys_heartbeat(void)
+{
+	return heartbeat_count_cont > 0;
+}
+
+// This uses filesystem process to reduce resource usage
+void setsystime(void)
+{
+	if (!currprefs.tod_hack || !rtarea_bank.baseaddr)
+		return;
+	heartbeat = get_long_host(rtarea_bank.baseaddr + RTAREA_HEARTBEAT);
+	heartbeat_task = 1;
+	heartbeat_count = 10;
+}
 
 static uae_u32 REGPARAM2 debugger_helper(TrapContext *ctx)
 {
diff --git a/src/include/inputdevice.h b/src/include/inputdevice.h
index c8516085..6728fa56 100644
--- a/src/include/inputdevice.h
+++ b/src/include/inputdevice.h
@@ -282,6 +282,8 @@ extern void inputdevice_acquire (int allmode);
 extern void inputdevice_unacquire (void);
 extern void inputdevice_unacquire(bool emulationactive, int inputmask);
 
+extern void pausemode(int mode);
+
 extern void inputdevice_add_inputcode(int code, int state, const TCHAR *);
 extern void inputdevice_handle_inputcode (void);
 
@@ -289,6 +291,8 @@ extern void inputdevice_tablet_strobe (void);
 
 extern uae_u64 input_getqualifiers (void);
 
+extern void setsystime(void);
+
 #define JSEM_MODE_DEFAULT 0
 #define JSEM_MODE_WHEELMOUSE 1
 #define JSEM_MODE_MOUSE 2
diff --git a/src/inputdevice.cpp b/src/inputdevice.cpp
index fcdd79c4..9ad4e579 100644
--- a/src/inputdevice.cpp
+++ b/src/inputdevice.cpp
@@ -97,6 +97,8 @@ static const int *joyinputs[MAX_JPORTS];
 
 static int input_acquired;
 
+static int autopause;
+
 static int handle_input_event (int nr, int state, int max, int autofire);
 
 static struct inputdevice_functions idev[IDTYPE_MAX];
@@ -2642,9 +2644,6 @@ static bool inputdevice_handle_inputcode2(int code, int state, const TCHAR *s)
 	//		screenshot(1, 1);
 	//	}
 	//	break;
-	case AKS_TOGGLEWINDOWEDFULLSCREEN:
-		toggle_fullscreen();
-		break;
 #ifdef ACTION_REPLAY
 	case AKS_FREEZEBUTTON:
 		action_replay_freeze();
@@ -2702,6 +2701,14 @@ static bool inputdevice_handle_inputcode2(int code, int state, const TCHAR *s)
 	case AKS_EFLOPPY3:
 		disk_eject(3);
 		break;
+	case AKS_PAUSE:
+		pausemode(newstate > 0 ? 1 : newstate);
+		break;
+	case AKS_SINGLESTEP:
+		if (pause_emulation)
+			pausemode(0);
+		autopause = 1;
+		break;
 	case AKS_VOLDOWN:
 		sound_volume(newstate <= 0 ? -1 : 1);
 		break;
@@ -2717,6 +2724,9 @@ static bool inputdevice_handle_inputcode2(int code, int state, const TCHAR *s)
 	case AKS_HARDRESET:
 		uae_reset(1, 1);
 		break;
+	case AKS_TOGGLEWINDOWEDFULLSCREEN:
+		toggle_fullscreen();
+		break;
 	case AKS_MOUSEMAP_PORT0_LEFT:
 		(changed_prefs.jports[0].mousemap) ^= 1 << 0;
 		inputdevice_updateconfig(&changed_prefs, &currprefs);
@@ -3071,6 +3081,13 @@ static void inputdevice_checkconfig (void)
 
 void inputdevice_vsync (void)
 {
+	if (autopause > 0 && pause_emulation == 0) {
+		autopause--;
+		if (!autopause) {
+			pausemode(1);
+		}
+	}
+
 	input_frame++;
 	mouseupdate (0, true);
 
@@ -6115,6 +6132,16 @@ int getmousestate (int joy)
 	return mice[joy].enabled;
 }
 
+void pausemode(int mode)
+{
+	if (mode < 0)
+		pause_emulation = pause_emulation ? 0 : 9;
+	else
+		pause_emulation = mode;
+	set_config_changed();
+	setsystime();
+}
+
 int jsem_isjoy (int port, const struct uae_prefs *p)
 {
 	int v = JSEM_DECODEVAL (port, p);