From 8693ae1bd880a758eb2efec4fccd32f89593855d Mon Sep 17 00:00:00 2001
From: Nebuleon Fumika
Date: Sun, 3 Feb 2013 04:19:11 -0500
Subject: Add SDK modifications by BassAceGold as of 2011-04-14, as well as
 modified DMA functions as of 2013-01-29.

---
 sdk-modifications/libsrc/key/key.c | 145 +++++++++++++++++++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 sdk-modifications/libsrc/key/key.c

(limited to 'sdk-modifications/libsrc/key/key.c')

diff --git a/sdk-modifications/libsrc/key/key.c b/sdk-modifications/libsrc/key/key.c
new file mode 100644
index 0000000..8a6ad5f
--- /dev/null
+++ b/sdk-modifications/libsrc/key/key.c
@@ -0,0 +1,145 @@
+#include "ds2_timer.h"
+#include "ds2io.h"
+
+#define KEY_REPEAT_TIME		200		//5 times/second
+#define KEY_REPEAT_TIME_N	(KEY_REPEAT_TIME*1000000/SYSTIME_UNIT)
+
+#define INPUT_REPEAT_TIME	100
+#define INPUT_REPEAT_TIME_N (INPUT_REPEAT_TIME*1000000/SYSTIME_UNIT)
+
+static unsigned int _last_key = 0;
+static unsigned int _last_key_timestamp = 0;
+
+/*
+*   Function: only detect the key pressed or not
+*/
+unsigned int getKey(void)
+{
+	struct key_buf input;
+	unsigned int new_key, hold_key, ret_key, timestamp;
+	int flag;
+
+	ds2_getrawInput(&input);
+	timestamp = getSysTime();
+	flag = ((timestamp - _last_key_timestamp) >= KEY_REPEAT_TIME_N) ? 1 : 0;
+
+	input.key &= 0x3FFF;
+	new_key = (_last_key ^ input.key) & input.key;
+	hold_key = _last_key & input.key;
+
+	ret_key = 0;
+	if(hold_key) {
+		if(flag)
+		{
+			ret_key = hold_key;
+			_last_key_timestamp = timestamp;
+		}
+	}
+
+	if(new_key)
+	{
+		ret_key |= new_key;
+		_last_key_timestamp = timestamp;
+
+		_last_key = input.key;
+	}
+
+	return ret_key;
+}
+
+/*
+*   Function: can get the detail information about key pressed, hold, or release
+*/
+unsigned int getKey1(void)
+{
+	struct key_buf input;
+	unsigned int new_key, hold_key, ret_key, timestamp;
+	int flag;
+
+	ds2_getrawInput(&input);
+	timestamp = getSysTime();
+	flag = ((timestamp - _last_key_timestamp) >= KEY_REPEAT_TIME_N) ? 1 : 0;
+
+	input.key &= 0x3FFF;
+	new_key = _last_key ^ input.key;
+	hold_key = _last_key & input.key;
+	//ret_key[31:16] = last key;
+	//ret_key[15:0]	= new key;
+	
+	ret_key = 0;
+	if(hold_key) {
+		if(flag)
+		{
+			ret_key = (hold_key << 16) | hold_key;
+			_last_key_timestamp = timestamp;
+		}
+	}
+
+	if(new_key)
+	{
+		unsigned int tmp_key;
+
+		//have new key pressed
+		if(new_key & input.key)
+		{
+			ret_key |= new_key & input.key;
+			_last_key_timestamp = timestamp;
+		}
+		else
+		{
+			ret_key |= (new_key & ~input.key) << 16;
+		}
+
+		_last_key = input.key;
+	}
+
+	return ret_key;
+}
+
+static unsigned int _last_input = 0;
+static unsigned int _last_input_timestamp = 0;
+
+/*
+*   Function: only detect the key pressed or not and touch position
+*/
+unsigned int getInput(struct key_buf *input) {
+    struct key_buf rawin;
+    unsigned int timestamp, new, hold;
+    int flag, ret;
+
+	ds2_getrawInput(&rawin);
+	timestamp = getSysTime();
+	flag = ((timestamp - _last_input_timestamp) >= INPUT_REPEAT_TIME_N) ? 1 : 0;
+    
+    rawin.key &= 0x3FFF;
+    new = (rawin.key ^ _last_input) & rawin.key;
+    hold = rawin.key & _last_input;
+    
+    ret = 0;
+    if(hold && flag)
+    {
+        ret = hold;
+        input->x = rawin.x;
+        input->y = rawin.y;
+        
+        _last_input_timestamp = timestamp;
+    }
+    
+    if(new)
+    {
+        ret |= new;
+        input->x = rawin.x;
+        input->y = rawin.y;
+        
+        _last_input_timestamp = timestamp;
+        _last_input = rawin.key;
+    }
+    
+    input->key = ret;
+    return ret > 0;
+}
+
+
+
+
+
-- 
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