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Simplified keyboard interrupt handler, fixed keyboard key states

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This commit is contained in:
rxi
2016-09-27 19:47:25 +01:00
parent 475fe50780
commit a4705bffd1
1 changed files with 6 additions and 14 deletions
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20
src/keyboard.c
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@@ -13,7 +13,7 @@
#include "luaobj.h"
#include "keyboard.h"
#define KEYBOARD_KEY_MAX 256
#define KEY_MAX 128
#define BUFFER_SIZE 32
#define BUFFER_MASK (BUFFER_SIZE - 1)
@@ -22,7 +22,7 @@ enum { KEY_UP, KEY_DOWN };
typedef struct { unsigned char type, code, isrepeat; } KeyEvent;
volatile int keyboard_allowKeyRepeat = 0;
volatile char keyboard_keyStates[KEYBOARD_KEY_MAX];
volatile char keyboard_keyStates[KEY_MAX];
volatile struct {
KeyEvent data[32];
@@ -33,20 +33,15 @@ _go32_dpmi_seginfo old_keyb_handler_seginfo, new_keyb_handler_seginfo;
void keyboard_handler() {
static unsigned char code, extended;
static unsigned char code;
code = inportb(0x60);
if (code == 224) {
/* Handle extended code */
extended = 1 << 7;
} else {
if (code != 224) {
volatile KeyEvent *e;
/* Handle key up / down */
if (code & (1 << 7)) {
/* Key up */
code &= ~(1 << 7);
code |= extended;
keyboard_keyStates[code] = 0;
e = &keyboard_events.data[keyboard_events.writei & BUFFER_MASK];
e->code = code;
@@ -57,7 +52,6 @@ void keyboard_handler() {
} else {
/* Key down */
int isrepeat = keyboard_keyStates[code];
code |= extended;
if (!isrepeat || keyboard_allowKeyRepeat) {
keyboard_keyStates[code] = 1;
e = &keyboard_events.data[keyboard_events.writei & BUFFER_MASK];
@@ -67,7 +61,6 @@ void keyboard_handler() {
keyboard_events.writei++;
}
}
extended = 0x0;
}
outportb(0x20, 0x20);
@@ -78,7 +71,7 @@ void keyboard_handler_end() {}
int keyboard_init(void) {
_go32_dpmi_lock_data((char*)&keyboard_keyStates, KEYBOARD_KEY_MAX);
_go32_dpmi_lock_data((char*)&keyboard_keyStates, KEY_MAX);
_go32_dpmi_lock_data((char*)&keyboard_events, sizeof(keyboard_events));
_go32_dpmi_lock_code(keyboard_handler,(unsigned long)keyboard_handler_end -
(unsigned long)keyboard_handler);
@@ -177,8 +170,8 @@ const char *scancodeMap[] = {
[ 75] = "left",
[ 76] = "5",
[ 77] = "right",
[ 79] = "end",
[ 78] = "+",
[ 79] = "end",
[ 80] = "down",
[ 81] = "pagedown",
[ 82] = "insert",
@@ -259,7 +252,6 @@ int l_keyboard_poll(lua_State *L) {
lua_newtable(L);
KeyEvent e = keyboard_events.data[keyboard_events.readi & BUFFER_MASK];
e.code &= 127;
lua_pushstring(L, e.type == KEY_DOWN ? "down" : "up");
lua_setfield(L, -2, "type");