diff options
Diffstat (limited to 'src/glut/dos/PC_HW/pc_keyb.c')
| -rw-r--r-- | src/glut/dos/PC_HW/pc_keyb.c | 540 |
1 files changed, 0 insertions, 540 deletions
diff --git a/src/glut/dos/PC_HW/pc_keyb.c b/src/glut/dos/PC_HW/pc_keyb.c deleted file mode 100644 index d7e3257..0000000 --- a/src/glut/dos/PC_HW/pc_keyb.c +++ /dev/null @@ -1,540 +0,0 @@ -/* - * PC/HW routine collection v1.3 for DOS/DJGPP - * - * Copyright (C) 2002 - Daniel Borca - * Email : dborca@yahoo.com - * Web : http://www.geocities.com/dborca - */ - - -#include <pc.h> -#include <sys/exceptn.h> -#include <sys/farptr.h> - -#include "pc_hw.h" - - -#define KEYB_IRQ 1 - -#define KEY_BUFFER_SIZE 64 - -#define KB_MODIFIERS (KB_SHIFT_FLAG | KB_CTRL_FLAG | KB_ALT_FLAG | KB_LWIN_FLAG | KB_RWIN_FLAG | KB_MENU_FLAG) -#define KB_LED_FLAGS (KB_SCROLOCK_FLAG | KB_NUMLOCK_FLAG | KB_CAPSLOCK_FLAG) - -static int keyboard_installed; - -static volatile struct { - volatile int start, end; - volatile int key[KEY_BUFFER_SIZE]; -} key_buffer; - -static volatile int key_enhanced, key_pause_loop, key_shifts; -static int leds_ok = TRUE; -static int in_a_terrupt = FALSE; -static volatile char pc_key[KEY_MAX]; - - -/* convert Allegro format scancodes into key_shifts flag bits */ -static unsigned short modifier_table[KEY_MAX - KEY_MODIFIERS] = { - KB_SHIFT_FLAG, KB_SHIFT_FLAG, KB_CTRL_FLAG, - KB_CTRL_FLAG, KB_ALT_FLAG, KB_ALT_FLAG, - KB_LWIN_FLAG, KB_RWIN_FLAG, KB_MENU_FLAG, - KB_SCROLOCK_FLAG, KB_NUMLOCK_FLAG, KB_CAPSLOCK_FLAG -}; - - -/* lookup table for converting hardware scancodes into Allegro format */ -static unsigned char hw_to_mycode[128] = { - /* 0x00 */ 0, KEY_ESC, KEY_1, KEY_2, - /* 0x04 */ KEY_3, KEY_4, KEY_5, KEY_6, - /* 0x08 */ KEY_7, KEY_8, KEY_9, KEY_0, - /* 0x0C */ KEY_MINUS, KEY_EQUALS, KEY_BACKSPACE, KEY_TAB, - /* 0x10 */ KEY_Q, KEY_W, KEY_E, KEY_R, - /* 0x14 */ KEY_T, KEY_Y, KEY_U, KEY_I, - /* 0x18 */ KEY_O, KEY_P, KEY_OPENBRACE, KEY_CLOSEBRACE, - /* 0x1C */ KEY_ENTER, KEY_LCONTROL, KEY_A, KEY_S, - /* 0x20 */ KEY_D, KEY_F, KEY_G, KEY_H, - /* 0x24 */ KEY_J, KEY_K, KEY_L, KEY_COLON, - /* 0x28 */ KEY_QUOTE, KEY_TILDE, KEY_LSHIFT, KEY_BACKSLASH, - /* 0x2C */ KEY_Z, KEY_X, KEY_C, KEY_V, - /* 0x30 */ KEY_B, KEY_N, KEY_M, KEY_COMMA, - /* 0x34 */ KEY_STOP, KEY_SLASH, KEY_RSHIFT, KEY_ASTERISK, - /* 0x38 */ KEY_ALT, KEY_SPACE, KEY_CAPSLOCK, KEY_F1, - /* 0x3C */ KEY_F2, KEY_F3, KEY_F4, KEY_F5, - /* 0x40 */ KEY_F6, KEY_F7, KEY_F8, KEY_F9, - /* 0x44 */ KEY_F10, KEY_NUMLOCK, KEY_SCRLOCK, KEY_7_PAD, - /* 0x48 */ KEY_8_PAD, KEY_9_PAD, KEY_MINUS_PAD, KEY_4_PAD, - /* 0x4C */ KEY_5_PAD, KEY_6_PAD, KEY_PLUS_PAD, KEY_1_PAD, - /* 0x50 */ KEY_2_PAD, KEY_3_PAD, KEY_0_PAD, KEY_DEL_PAD, - /* 0x54 */ KEY_PRTSCR, 0, KEY_BACKSLASH2, KEY_F11, - /* 0x58 */ KEY_F12, 0, 0, KEY_LWIN, - /* 0x5C */ KEY_RWIN, KEY_MENU, 0, 0, - /* 0x60 */ 0, 0, 0, 0, - /* 0x64 */ 0, 0, 0, 0, - /* 0x68 */ 0, 0, 0, 0, - /* 0x6C */ 0, 0, 0, 0, - /* 0x70 */ KEY_KANA, 0, 0, KEY_ABNT_C1, - /* 0x74 */ 0, 0, 0, 0, - /* 0x78 */ 0, KEY_CONVERT, 0, KEY_NOCONVERT, - /* 0x7C */ 0, KEY_YEN, 0, 0 -}; - - -/* lookup table for converting extended hardware codes into Allegro format */ -static unsigned char hw_to_mycode_ex[128] = { - /* 0x00 */ 0, KEY_ESC, KEY_1, KEY_2, - /* 0x04 */ KEY_3, KEY_4, KEY_5, KEY_6, - /* 0x08 */ KEY_7, KEY_8, KEY_9, KEY_0, - /* 0x0C */ KEY_MINUS, KEY_EQUALS, KEY_BACKSPACE, KEY_TAB, - /* 0x10 */ KEY_CIRCUMFLEX, KEY_AT, KEY_COLON2, KEY_R, - /* 0x14 */ KEY_KANJI, KEY_Y, KEY_U, KEY_I, - /* 0x18 */ KEY_O, KEY_P, KEY_OPENBRACE, KEY_CLOSEBRACE, - /* 0x1C */ KEY_ENTER_PAD, KEY_RCONTROL, KEY_A, KEY_S, - /* 0x20 */ KEY_D, KEY_F, KEY_G, KEY_H, - /* 0x24 */ KEY_J, KEY_K, KEY_L, KEY_COLON, - /* 0x28 */ KEY_QUOTE, KEY_TILDE, 0, KEY_BACKSLASH, - /* 0x2C */ KEY_Z, KEY_X, KEY_C, KEY_V, - /* 0x30 */ KEY_B, KEY_N, KEY_M, KEY_COMMA, - /* 0x34 */ KEY_STOP, KEY_SLASH_PAD, 0, KEY_PRTSCR, - /* 0x38 */ KEY_ALTGR, KEY_SPACE, KEY_CAPSLOCK, KEY_F1, - /* 0x3C */ KEY_F2, KEY_F3, KEY_F4, KEY_F5, - /* 0x40 */ KEY_F6, KEY_F7, KEY_F8, KEY_F9, - /* 0x44 */ KEY_F10, KEY_NUMLOCK, KEY_PAUSE, KEY_HOME, - /* 0x48 */ KEY_UP, KEY_PGUP, KEY_MINUS_PAD, KEY_LEFT, - /* 0x4C */ KEY_5_PAD, KEY_RIGHT, KEY_PLUS_PAD, KEY_END, - /* 0x50 */ KEY_DOWN, KEY_PGDN, KEY_INSERT, KEY_DEL, - /* 0x54 */ KEY_PRTSCR, 0, KEY_BACKSLASH2, KEY_F11, - /* 0x58 */ KEY_F12, 0, 0, KEY_LWIN, - /* 0x5C */ KEY_RWIN, KEY_MENU, 0, 0, - /* 0x60 */ 0, 0, 0, 0, - /* 0x64 */ 0, 0, 0, 0, - /* 0x68 */ 0, 0, 0, 0, - /* 0x6C */ 0, 0, 0, 0, - /* 0x70 */ 0, 0, 0, 0, - /* 0x74 */ 0, 0, 0, 0, - /* 0x78 */ 0, 0, 0, 0, - /* 0x7C */ 0, 0, 0, 0 -}; - - -/* default mapping table for the US keyboard layout */ -static unsigned short standard_key_ascii_table[KEY_MAX] = { - /* start */ 0, - /* alphabet */ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', - /* numbers */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - /* numpad */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - /* func keys */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* misc chars */ 27, '`', '-', '=', 8, 9, '[', ']', 13, ';', '\'', '\\', '\\', ',', '.', '/', ' ', - /* controls */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* numpad */ '/', '*', '-', '+', '.', 13, - /* modifiers */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - - -/* capslock mapping table for the US keyboard layout */ -static unsigned short standard_key_capslock_table[KEY_MAX] = { - /* start */ 0, - /* alphabet */ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', - /* numbers */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - /* numpad */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - /* func keys */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* misc chars */ 27, '`', '-', '=', 8, 9, '[', ']', 13, ';', '\'', '\\', '\\', ',', '.', '/', ' ', - /* controls */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* numpad */ '/', '*', '-', '+', '.', 13, - /* modifiers */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - - -/* shifted mapping table for the US keyboard layout */ -static unsigned short standard_key_shift_table[KEY_MAX] = { - /* start */ 0, - /* alphabet */ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', - /* numbers */ ')', '!', '@', '#', '$', '%', '^', '&', '*', '(', - /* numpad */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - /* func keys */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* misc chars */ 27, '~', '_', '+', 8, 9, '{', '}', 13, ':', '"', '|', '|', '<', '>', '?', ' ', - /* controls */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* numpad */ '/', '*', '-', '+', '.', 13, - /* modifiers */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - - -/* ctrl+key mapping table for the US keyboard layout */ -static unsigned short standard_key_control_table[KEY_MAX] = { - /* start */ 0, - /* alphabet */ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, - /* numbers */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - /* numpad */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - /* func keys */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* misc chars */ 27, 2, 2, 2, 127, 127, 2, 2, 10, 2, 2, 2, 2, 2, 2, 2, 2, - /* controls */ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, - /* numpad */ 2, 2, 2, 2, 2, 10, - /* modifiers */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - - -/* convert numeric pad scancodes into arrow codes */ -static unsigned char numlock_table[10] = { - KEY_INSERT, KEY_END, KEY_DOWN, KEY_PGDN, KEY_LEFT, - KEY_5_PAD, KEY_RIGHT, KEY_HOME, KEY_UP, KEY_PGUP -}; - - -/* kb_wait_for_write_ready: - * Wait for the keyboard controller to set the ready-for-write bit. - */ -static __inline int -kb_wait_for_write_ready (void) -{ - int timeout = 4096; - - while ((timeout > 0) && (inportb(0x64) & 2)) timeout--; - - return (timeout > 0); -} - - -/* kb_wait_for_read_ready: - * Wait for the keyboard controller to set the ready-for-read bit. - */ -static __inline int -kb_wait_for_read_ready (void) -{ - int timeout = 16384; - - while ((timeout > 0) && (!(inportb(0x64) & 1))) timeout--; - - return (timeout > 0); -} - - -/* kb_send_data: - * Sends a byte to the keyboard controller. Returns 1 if all OK. - */ -static __inline int -kb_send_data (unsigned char data) -{ - int resends = 4; - int timeout, temp; - - do { - if (!kb_wait_for_write_ready()) - return 0; - - outportb(0x60, data); - timeout = 4096; - - while (--timeout > 0) { - if (!kb_wait_for_read_ready()) - return 0; - - temp = inportb(0x60); - - if (temp == 0xFA) - return 1; - - if (temp == 0xFE) - break; - } - } while ((resends-- > 0) && (timeout > 0)); - - return 0; -} - - -static void -update_leds (int leds) -{ - if (leds_ok) { - if (!in_a_terrupt) - DISABLE(); - - if (!kb_send_data(0xED)) { - kb_send_data(0xF4); - leds_ok = FALSE; - } else if (!kb_send_data((leds >> 8) & 7)) { - kb_send_data(0xF4); - leds_ok = FALSE; - } - - if (!in_a_terrupt) - ENABLE(); - } -} ENDOFUNC(update_leds) - - -static void -inject_key (int scancode) -{ - unsigned short *table; - - if ((scancode >= KEY_0_PAD) && (scancode <= KEY_9_PAD)) { - if (((key_shifts & KB_NUMLOCK_FLAG) != 0) == ((key_shifts & KB_SHIFT_FLAG) != 0)) { - scancode = numlock_table[scancode - KEY_0_PAD]; - } - table = standard_key_ascii_table; - } else if (key_shifts & KB_CTRL_FLAG) { - table = standard_key_control_table; - } else if (key_shifts & KB_SHIFT_FLAG) { - if (key_shifts & KB_CAPSLOCK_FLAG) { - if (standard_key_ascii_table[scancode] == standard_key_capslock_table[scancode]) { - table = standard_key_shift_table; - } else { - table = standard_key_ascii_table; - } - } else { - table = standard_key_shift_table; - } - } else if (key_shifts & KB_CAPSLOCK_FLAG) { - table = standard_key_capslock_table; - } else { - table = standard_key_ascii_table; - } - - key_buffer.key[key_buffer.end++] = (scancode << 16) | table[scancode]; - - if (key_buffer.end >= KEY_BUFFER_SIZE) - key_buffer.end = 0; - if (key_buffer.end == key_buffer.start) { - key_buffer.start++; - if (key_buffer.start >= KEY_BUFFER_SIZE) - key_buffer.start = 0; - } -} ENDOFUNC(inject_key) - - -static void -handle_code (int scancode, int keycode) -{ - in_a_terrupt++; - - if (keycode == 0) { /* pause */ - inject_key(scancode); - pc_key[KEY_PAUSE] ^= TRUE; - } else if (scancode) { - int flag; - - if (scancode >= KEY_MODIFIERS) { - flag = modifier_table[scancode - KEY_MODIFIERS]; - } else { - flag = 0; - } - if ((char)keycode < 0) { /* release */ - pc_key[scancode] = FALSE; - if (flag & KB_MODIFIERS) { - key_shifts &= ~flag; - } - } else { /* keypress */ - pc_key[scancode] = TRUE; - if (flag & KB_MODIFIERS) { - key_shifts |= flag; - } - if (flag & KB_LED_FLAGS) { - key_shifts ^= flag; - update_leds(key_shifts); - } - if (scancode < KEY_MODIFIERS) { - inject_key(scancode); - } - } - } - - in_a_terrupt--; -} ENDOFUNC(handle_code) - - -static int -keyboard () -{ - unsigned char temp, scancode; - - temp = inportb(0x60); - - if (temp <= 0xe1) { - if (key_pause_loop) { - if (!--key_pause_loop) handle_code(KEY_PAUSE, 0); - } else - switch (temp) { - case 0xe0: - key_enhanced = TRUE; - break; - case 0xe1: - key_pause_loop = 5; - break; - default: - if (key_enhanced) { - key_enhanced = FALSE; - scancode = hw_to_mycode_ex[temp & 0x7f]; - } else { - scancode = hw_to_mycode[temp & 0x7f]; - } - handle_code(scancode, temp); - } - } - - if (((temp==0x4F)||(temp==0x53))&&(key_shifts&KB_CTRL_FLAG)&&(key_shifts&KB_ALT_FLAG)) { - /* Hack alert: - * only SIGINT (but not Ctrl-Break) - * calls the destructors and will safely clean up - */ - __asm("\n\ - movb $0x79, %%al \n\ - call ___djgpp_hw_exception \n\ - ":::"%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory"); - } - - __asm("\n\ - inb $0x61, %%al \n\ - movb %%al, %%ah \n\ - orb $0x80, %%al \n\ - outb %%al, $0x61 \n\ - xchgb %%al, %%ah \n\ - outb %%al, $0x61 \n\ - movb $0x20, %%al \n\ - outb %%al, $0x20 \n\ - ":::"%eax"); - return 0; -} ENDOFUNC(keyboard) - - -int -pc_keypressed (void) -{ - return (key_buffer.start!=key_buffer.end); -} - - -int -pc_readkey (void) -{ - if (keyboard_installed) { - int key; - - while (key_buffer.start == key_buffer.end) { - __dpmi_yield(); - } - - DISABLE(); - key = key_buffer.key[key_buffer.start++]; - if (key_buffer.start >= KEY_BUFFER_SIZE) - key_buffer.start = 0; - ENABLE(); - - return key; - } else { - return 0; - } -} - - -int -pc_keydown (int code) -{ - return pc_key[code]; -} - - -int -pc_keyshifts (void) -{ - return key_shifts; -} - - -void -pc_remove_keyb (void) -{ - if (keyboard_installed) { - int s1, s2, s3; - - keyboard_installed = FALSE; - pc_clexit(pc_remove_keyb); - - DISABLE(); - _farsetsel(__djgpp_dos_sel); - _farnspokew(0x41c, _farnspeekw(0x41a)); - - s1 = _farnspeekb(0x417) & 0x80; - s2 = _farnspeekb(0x418) & 0xFC; - s3 = _farnspeekb(0x496) & 0xF3; - - if (pc_key[KEY_RSHIFT]) { s1 |= 1; } - if (pc_key[KEY_LSHIFT]) { s1 |= 2; } - if (pc_key[KEY_LCONTROL]) { s2 |= 1; s1 |= 4; } - if (pc_key[KEY_ALT]) { s1 |= 8; s2 |= 2; } - if (pc_key[KEY_RCONTROL]) { s1 |= 4; s3 |= 4; } - if (pc_key[KEY_ALTGR]) { s1 |= 8; s3 |= 8; } - - if (key_shifts & KB_SCROLOCK_FLAG) s1 |= 16; - if (key_shifts & KB_NUMLOCK_FLAG) s1 |= 32; - if (key_shifts & KB_CAPSLOCK_FLAG) s1 |= 64; - - _farnspokeb(0x417, s1); - _farnspokeb(0x418, s2); - _farnspokeb(0x496, s3); - update_leds(key_shifts); - - ENABLE(); - pc_remove_irq(KEYB_IRQ); - } -} - - -int -pc_install_keyb (void) -{ - if (keyboard_installed || pc_install_irq(KEYB_IRQ, keyboard)) { - return -1; - } else { - int s1, s2, s3; - - LOCKDATA(key_buffer); - LOCKDATA(key_enhanced); - LOCKDATA(key_pause_loop); - LOCKDATA(key_shifts); - LOCKDATA(leds_ok); - LOCKDATA(in_a_terrupt); - LOCKDATA(pc_key); - LOCKDATA(modifier_table); - LOCKDATA(hw_to_mycode); - LOCKDATA(hw_to_mycode_ex); - LOCKDATA(standard_key_ascii_table); - LOCKDATA(standard_key_capslock_table); - LOCKDATA(standard_key_shift_table); - LOCKDATA(standard_key_control_table); - LOCKDATA(numlock_table); - LOCKFUNC(update_leds); - LOCKFUNC(inject_key); - LOCKFUNC(handle_code); - LOCKFUNC(keyboard); - - DISABLE(); - _farsetsel(__djgpp_dos_sel); - _farnspokew(0x41c, _farnspeekw(0x41a)); - - key_shifts = 0; - s1 = _farnspeekb(0x417); - s2 = _farnspeekb(0x418); - s3 = _farnspeekb(0x496); - - if (s1 & 1) { key_shifts |= KB_SHIFT_FLAG; pc_key[KEY_RSHIFT] = TRUE; } - if (s1 & 2) { key_shifts |= KB_SHIFT_FLAG; pc_key[KEY_LSHIFT] = TRUE; } - if (s2 & 1) { key_shifts |= KB_CTRL_FLAG; pc_key[KEY_LCONTROL] = TRUE; } - if (s2 & 2) { key_shifts |= KB_ALT_FLAG; pc_key[KEY_ALT] = TRUE; } - if (s3 & 4) { key_shifts |= KB_CTRL_FLAG; pc_key[KEY_RCONTROL] = TRUE; } - if (s3 & 8) { key_shifts |= KB_ALT_FLAG; pc_key[KEY_ALTGR] = TRUE; } - - if (s1 & 16) key_shifts |= KB_SCROLOCK_FLAG; - if (s1 & 32) key_shifts |= KB_NUMLOCK_FLAG; - if (s1 & 64) key_shifts |= KB_CAPSLOCK_FLAG; - update_leds(key_shifts); - - key_enhanced = key_pause_loop = 0; - key_buffer.start = key_buffer.end = 0; - ENABLE(); - - pc_atexit(pc_remove_keyb); - keyboard_installed = TRUE; - return 0; - } -} |