SDL_sysjoystick.c
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上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:17k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- Sam Lantinga
- slouken@libsdl.org
- */
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_sysjoystick.c,v 1.1 2002/04/22 21:38:02 wmay Exp $";
- #endif
- /*
- * Atari Joystick/Joypad drivers
- *
- * Patrice Mandin
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <sys/cookie.h>
- #include <mint/osbind.h>
- #include "SDL_types.h"
- #include "SDL_error.h"
- #include "SDL_joystick.h"
- #include "SDL_sysjoystick.h"
- #include "SDL_joystick_c.h"
- #include "SDL_ikbdinterrupt_s.h"
- #include "SDL_xbiosevents_c.h"
- #include "SDL_xbiosinterrupt_s.h"
- /*--- Const ---*/
- /* We can have:
- 1 joystick on IKBD port 1, read via hardware I/O
- or same joystick on IKBD port 1, read via xbios
- 2 joypads on ports A,B
- or 4 joysticks on joypads ports A,B
- or 1 lightpen on joypad port A
- or 2 analog paddles on joypads ports A,B
- 2 joysticks on parallel port
- */
- enum {
- IKBD_JOY1=0,
- XBIOS_JOY1,
- PORTA_PAD,
- PORTB_PAD,
- PORTA_JOY0,
- PORTA_JOY1,
- PORTB_JOY0,
- PORTB_JOY1,
- PORTA_LP,
- PORTA_ANPAD,
- PORTB_ANPAD,
- #if 0
- PARA_JOY0,
- PARA_JOY1,
- #endif
- MAX_JOYSTICKS
- };
- enum {
- MCH_ST=0,
- MCH_STE,
- MCH_TT,
- MCH_F30
- };
- /* Joypad buttons
- * Procontroller note:
- * L,R are connected to 4,6
- * X,Y,Z are connected to 7,8,9
- */
- enum {
- JP_UP=0, JP_DOWN, JP_LEFT, JP_RIGHT,
- JP_KPMULT, JP_KP7, JP_KP4, JP_KP1,
- JP_KP0, JP_KP8, JP_KP5, JP_KP2,
- JP_KPNUM, JP_KP9, JP_KP6, JP_KP3,
- JP_PAUSE, JP_FIRE0, JP_UNDEF0, JP_FIRE1,
- JP_UNDEF1, JP_FIRE2, JP_UNDEF2, JP_OPTION
- };
- #define JP_NUM_BUTTONS 17
- #define PORT_JS_RIGHT (1<<0)
- #define PORT_JS_LEFT (1<<1)
- #define PORT_JS_DOWN (1<<2)
- #define PORT_JS_UP (1<<3)
- #define PORT_JS_FIRE (1<<4)
- /*--- Types ---*/
- typedef struct {
- SDL_bool enabled;
- unsigned char *name;
- Uint32 prevstate;
- } atarijoy_t;
- /*--- Variables ---*/
- static atarijoy_t atarijoysticks[MAX_JOYSTICKS]={
- {SDL_FALSE,"IKBD joystick port 1",0},
- {SDL_FALSE,"Xbios joystick port 1",0},
- {SDL_FALSE,"Joypad port A",0},
- {SDL_FALSE,"Joypad port B",0},
- {SDL_FALSE,"Joystick 0 port A",0},
- {SDL_FALSE,"Joystick 1 port A",0},
- {SDL_FALSE,"Joystick 0 port B",0},
- {SDL_FALSE,"Joystick 1 port B",0},
- {SDL_FALSE,"Lightpen port A",0},
- {SDL_FALSE,"Analog paddle port A",0},
- {SDL_FALSE,"Analog paddle port B",0}
- #if 0
- ,{SDL_FALSE,"Joystick 0 parallel port",0},
- {SDL_FALSE,"Joystick 1 parallel port",0}
- #endif
- };
- static const int jp_buttons[JP_NUM_BUTTONS]={
- JP_FIRE0, JP_FIRE1, JP_FIRE2, JP_PAUSE,
- JP_OPTION, JP_KPMULT, JP_KPNUM, JP_KP0,
- JP_KP1, JP_KP2, JP_KP3, JP_KP4,
- JP_KP5, JP_KP6, JP_KP7, JP_KP8,
- JP_KP9
- };
- static SDL_bool joypad_ports_enabled=SDL_FALSE;
- /* Updated joypad ports */
- static Uint16 jp_paddles[4];
- static Uint16 jp_lightpens[2];
- static Uint16 jp_directions;
- static Uint16 jp_fires;
- static Uint32 jp_joypads[2];
- /*--- Functions prototypes ---*/
- static int GetEnabledAtariJoystick(int index);
- static void UpdateJoypads(void);
- /*--- Functions ---*/
- int SDL_SYS_JoystickInit(void)
- {
- int i;
- unsigned long cookie_mch;
- const char *envr=getenv("SDL_JOYSTICK_ATARI");
- #define TEST_JOY_ENABLED(env,idstring,num)
- if (strstr(env,idstring"-off")) {
- atarijoysticks[num].enabled=SDL_FALSE;
- }
- if (strstr(env,idstring"-on")) {
- atarijoysticks[num].enabled=SDL_TRUE;
- }
- /* Cookie _MCH present ? if not, assume ST machine */
- if (Getcookie(C__MCH, &cookie_mch) != C_FOUND) {
- cookie_mch = MCH_ST << 16;
- }
- /* Enable some default joysticks */
- if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
- (cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16)) {
- atarijoysticks[IKBD_JOY1].enabled=(SDL_AtariIkbd_enabled!=0);
- }
- if ((cookie_mch == MCH_STE<<16) || (cookie_mch == MCH_F30<<16)) {
- atarijoysticks[PORTA_PAD].enabled=SDL_TRUE;
- atarijoysticks[PORTB_PAD].enabled=SDL_TRUE;
- }
- if (!atarijoysticks[IKBD_JOY1].enabled) {
- atarijoysticks[XBIOS_JOY1].enabled=(SDL_AtariXbios_enabled!=0);
- }
- /* Read environment for joysticks to enable */
- if (envr) {
- /* IKBD on any Atari, maybe clones */
- if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
- (cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16)) {
- if (SDL_AtariIkbd_enabled!=0) {
- TEST_JOY_ENABLED(envr, "ikbd-joy1", IKBD_JOY1);
- }
- }
- /* Joypads ports only on STE and Falcon */
- if ((cookie_mch == MCH_STE<<16) || (cookie_mch == MCH_F30<<16)) {
- TEST_JOY_ENABLED(envr, "porta-pad", PORTA_PAD);
- if (!atarijoysticks[PORTA_PAD].enabled) {
- TEST_JOY_ENABLED(envr, "porta-joy0", PORTA_JOY0);
- TEST_JOY_ENABLED(envr, "porta-joy1", PORTA_JOY1);
- if (!(atarijoysticks[PORTA_JOY0].enabled) && !(atarijoysticks[PORTA_JOY1].enabled)) {
- TEST_JOY_ENABLED(envr, "porta-lp", PORTA_LP);
- if (!atarijoysticks[PORTA_LP].enabled) {
- TEST_JOY_ENABLED(envr, "porta-anpad", PORTA_ANPAD);
- }
- }
- }
- TEST_JOY_ENABLED(envr, "portb-pad", PORTB_PAD);
- if (!atarijoysticks[PORTB_PAD].enabled) {
- TEST_JOY_ENABLED(envr, "portb-joy0", PORTB_JOY0);
- TEST_JOY_ENABLED(envr, "portb-joy1", PORTB_JOY1);
- if (!(atarijoysticks[PORTB_JOY0].enabled) && !(atarijoysticks[PORTB_JOY1].enabled)) {
- TEST_JOY_ENABLED(envr, "portb-anpad", PORTB_ANPAD);
- }
- }
- }
- if (!atarijoysticks[IKBD_JOY1].enabled) {
- if (SDL_AtariXbios_enabled!=0) {
- TEST_JOY_ENABLED(envr, "xbios-joy1", XBIOS_JOY1);
- }
- }
- #if 0
- /* Parallel port on any Atari, maybe clones */
- if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
- (cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16)) {
- TEST_JOY_ENABLED(envr, "para-joy0", PARA_JOY0);
- TEST_JOY_ENABLED(envr, "para-joy1", PARA_JOY1);
- }
- #endif
- }
- /* Need to update joypad ports ? */
- joypad_ports_enabled=SDL_FALSE;
- for (i=PORTA_PAD;i<=PORTB_ANPAD;i++) {
- if (atarijoysticks[i].enabled) {
- joypad_ports_enabled=SDL_TRUE;
- break;
- }
- }
- SDL_numjoysticks = 0;
- for (i=0;i<MAX_JOYSTICKS;i++) {
- if (atarijoysticks[i].enabled) {
- ++SDL_numjoysticks;
- }
- }
- return(SDL_numjoysticks);
- }
- static int GetEnabledAtariJoystick(int index)
- {
- int i,j;
- /* Return the nth'index' enabled atari joystick */
- j=0;
- for (i=0;i<MAX_JOYSTICKS;i++) {
- if (!atarijoysticks[i].enabled) {
- continue;
- }
- if (j==index) {
- break;
- }
- ++j;
- }
- if (i==MAX_JOYSTICKS)
- return -1;
- return i;
- }
- const char *SDL_SYS_JoystickName(int index)
- {
- int numjoystick;
- numjoystick=GetEnabledAtariJoystick(index);
- if (numjoystick==-1)
- return NULL;
- return(atarijoysticks[numjoystick].name);
- }
- int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
- {
- int numjoystick;
- numjoystick=GetEnabledAtariJoystick(joystick->index);
- if (numjoystick==-1)
- return -1;
- if ((numjoystick==PORTA_PAD) || (numjoystick==PORTB_PAD)) {
- joystick->nbuttons=JP_NUM_BUTTONS;
- } else if ((numjoystick==PORTA_LP) || (numjoystick==PORTA_ANPAD) ||
- (numjoystick==PORTB_ANPAD)) {
- joystick->nbuttons=2;
- } else {
- joystick->nbuttons=1;
- }
- joystick->naxes=2;
- joystick->nballs=0;
- joystick->nhats=0;
- return(0);
- }
- void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
- {
- int numjoystick;
- Uint32 curstate,prevstate;
- Sint16 curaxis;
- numjoystick=GetEnabledAtariJoystick(joystick->index);
- if (numjoystick==-1)
- return;
- prevstate = atarijoysticks[numjoystick].prevstate;
- if (joypad_ports_enabled) {
- Supexec(UpdateJoypads);
- }
- switch (numjoystick) {
- case IKBD_JOY1:
- case XBIOS_JOY1:
- {
- curstate = 0;
- if (numjoystick==IKBD_JOY1) {
- curstate = SDL_AtariIkbd_joystick & 0xff;
- }
- if (numjoystick==XBIOS_JOY1) {
- curstate = SDL_AtariXbios_joystick & 0xff;
- }
- if (curstate != prevstate) {
- /* X axis */
- if ((curstate & (IKBD_JOY_LEFT|IKBD_JOY_RIGHT)) != (prevstate & (IKBD_JOY_LEFT|IKBD_JOY_RIGHT))) {
- curaxis=0;
- if (curstate & IKBD_JOY_LEFT) {
- curaxis=-128;
- } else if (curstate & IKBD_JOY_RIGHT) {
- curaxis=127;
- }
- SDL_PrivateJoystickAxis(joystick,0,curaxis);
- }
- /* Y axis */
- if ((curstate & (IKBD_JOY_UP|IKBD_JOY_DOWN)) != (prevstate & (IKBD_JOY_UP|IKBD_JOY_DOWN))) {
- curaxis=0;
- if (curstate & IKBD_JOY_UP) {
- curaxis=-128;
- } else if (curstate & IKBD_JOY_DOWN) {
- curaxis=127;
- }
- SDL_PrivateJoystickAxis(joystick,1,curaxis);
- }
- /* Button */
- if ((curstate & IKBD_JOY_FIRE) && !(prevstate & IKBD_JOY_FIRE)) {
- SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
- }
- if (!(curstate & IKBD_JOY_FIRE) && (prevstate & IKBD_JOY_FIRE)) {
- SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
- }
- }
- atarijoysticks[numjoystick].prevstate = curstate;
- }
- break;
- case PORTA_PAD:
- case PORTB_PAD:
- {
- int numjoypad,i;
- numjoypad=0;
- /* if (numjoystick==PORTA_PAD) numjoypad=0;*/
- if (numjoystick==PORTB_PAD) numjoypad=1;
- curstate=jp_joypads[numjoypad];
- if (curstate!=prevstate) {
- /* X axis */
- if ((curstate & ((1<<JP_LEFT)|(1<<JP_RIGHT))) != (prevstate & ((1<<JP_LEFT)|(1<<JP_RIGHT)))) {
- curaxis=0;
- if (curstate & (1<<JP_LEFT)) {
- curaxis=-128;
- } else if (curstate & (1<<JP_RIGHT)) {
- curaxis=127;
- }
- SDL_PrivateJoystickAxis(joystick,0,curaxis);
- }
- /* Y axis */
- if ((curstate & ((1<<JP_UP)|(1<<JP_DOWN))) != (prevstate & ((1<<JP_UP)|(1<<JP_DOWN)))) {
- curaxis=0;
- if (curstate & (1<<JP_UP)) {
- curaxis=-128;
- } else if (curstate & (1<<JP_DOWN)) {
- curaxis=127;
- }
- SDL_PrivateJoystickAxis(joystick,1,curaxis);
- }
- /* Buttons */
- for (i=0;i<JP_NUM_BUTTONS;i++) {
- int button;
- button=1<<jp_buttons[i];
- if ((curstate & button) && !(prevstate & button)) {
- SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
- }
- if (!(curstate & button) && (prevstate & button)) {
- SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
- }
- }
- }
- atarijoysticks[numjoystick].prevstate = curstate;
- }
- break;
- case PORTA_JOY0:
- case PORTA_JOY1:
- case PORTB_JOY0:
- case PORTB_JOY1:
- {
- int fire_shift=0,dir_shift=0;
- if (numjoystick==PORTA_JOY0) { fire_shift=0; dir_shift=0; }
- if (numjoystick==PORTA_JOY1) { fire_shift=1; dir_shift=4; }
- if (numjoystick==PORTB_JOY0) { fire_shift=2; dir_shift=8; }
- if (numjoystick==PORTB_JOY1) { fire_shift=3; dir_shift=12; }
- curstate = (jp_directions>>dir_shift) & 15;
- curstate |= ((jp_fires>>fire_shift) & 1)<<4;
- if (curstate != prevstate) {
- /* X axis */
- if ((curstate & (PORT_JS_LEFT|PORT_JS_RIGHT)) != (prevstate & (PORT_JS_LEFT|PORT_JS_RIGHT))) {
- curaxis=0;
- if (curstate & PORT_JS_LEFT) {
- curaxis=-128;
- } else if (curstate & PORT_JS_RIGHT) {
- curaxis=127;
- }
- SDL_PrivateJoystickAxis(joystick,0,curaxis);
- }
- /* Y axis */
- if ((curstate & (PORT_JS_UP|PORT_JS_DOWN)) != (prevstate & (PORT_JS_UP|PORT_JS_DOWN))) {
- curaxis=0;
- if (curstate & PORT_JS_UP) {
- curaxis=-128;
- } else if (curstate & PORT_JS_DOWN) {
- curaxis=127;
- }
- SDL_PrivateJoystickAxis(joystick,1,curaxis);
- }
- /* Button */
- if ((curstate & PORT_JS_FIRE) && !(prevstate & PORT_JS_FIRE)) {
- SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
- }
- if (!(curstate & PORT_JS_FIRE) && (prevstate & PORT_JS_FIRE)) {
- SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
- }
- }
- atarijoysticks[numjoystick].prevstate = curstate;
- }
- break;
- case PORTA_LP:
- {
- int i;
- curstate = jp_lightpens[0]>>1;
- curstate |= (jp_lightpens[1]>>1)<<15;
- curstate |= (jp_fires & 3)<<30;
- if (curstate != prevstate) {
- /* X axis */
- SDL_PrivateJoystickAxis(joystick,0,(jp_lightpens[0]>>8)-128);
- /* Y axis */
- SDL_PrivateJoystickAxis(joystick,1,(jp_lightpens[1]>>8)-128);
- /* Buttons */
- for (i=0;i<2;i++) {
- int button;
- button=1<<(30+i);
- if ((curstate & button) && !(prevstate & button)) {
- SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
- }
- if (!(curstate & button) && (prevstate & button)) {
- SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
- }
- }
- }
- atarijoysticks[numjoystick].prevstate = curstate;
- }
- break;
- case PORTA_ANPAD:
- case PORTB_ANPAD:
- {
- int numpaddle, i;
- numpaddle=0<<1;
- if (numjoystick==PORTB_ANPAD) numpaddle=1<<1;
- curstate = jp_paddles[numpaddle]>>1;
- curstate |= (jp_paddles[numpaddle+1]>>1)<<15;
- curstate |= ((jp_fires>>numpaddle) & 3)<<30;
- if (curstate != prevstate) {
- /* X axis */
- SDL_PrivateJoystickAxis(joystick,0,(jp_paddles[numpaddle]>>8)-128);
- /* Y axis */
- SDL_PrivateJoystickAxis(joystick,1,(jp_paddles[numpaddle+1]>>8)-128);
- /* Buttons */
- for (i=0;i<2;i++) {
- int button;
- button=1<<(30+i);
- if ((curstate & button) && !(prevstate & button)) {
- SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
- }
- if (!(curstate & button) && (prevstate & button)) {
- SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
- }
- }
- }
- atarijoysticks[numjoystick].prevstate = curstate;
- }
- break;
- #if 0
- case PARA_JOY0:
- case PARA_JOY1:
- break;
- #endif
- };
- return;
- }
- void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
- {
- return;
- }
- void SDL_SYS_JoystickQuit(void)
- {
- SDL_numjoysticks=0;
- return;
- }
- /*--- Joypad I/O read/write interface ---*/
- #define JOYPAD_IO_BASE (0xffff9200)
- struct JOYPAD_IO_S {
- Uint16 fires;
- Uint16 directions;
- Uint16 dummy1[6];
- Uint16 paddles[4];
- Uint16 dummy2[4];
- Uint16 lightpens[2];
- };
- #define JOYPAD_IO ((*(volatile struct JOYPAD_IO_S *)JOYPAD_IO_BASE))
- static void UpdateJoypads(void)
- {
- Uint16 tmp;
- /*--- This function is called in supervisor mode ---*/
- /* Update joysticks */
- jp_fires = (~(JOYPAD_IO.fires)) & 15;
- jp_directions = (~(JOYPAD_IO.directions));
- /* Update lightpen */
- tmp = JOYPAD_IO.lightpens[0] & 1023;
- jp_lightpens[0] = (tmp<<6) | (tmp>>4);
- tmp = JOYPAD_IO.lightpens[1] & 1023;
- jp_lightpens[1] = (tmp<<6) | (tmp>>4);
- /* Update paddles */
- tmp = (JOYPAD_IO.paddles[0] & 255);
- jp_paddles[0] = (tmp<<8) | tmp;
- tmp = (JOYPAD_IO.paddles[1] & 255);
- jp_paddles[1] = (tmp<<8) | tmp;
- tmp = (JOYPAD_IO.paddles[2] & 255);
- jp_paddles[2] = (tmp<<8) | tmp;
- tmp = (JOYPAD_IO.paddles[3] & 255);
- jp_paddles[3] = (tmp<<8) | tmp;
- /* Update joypad 0 */
- JOYPAD_IO.directions=0xfffe;
- jp_joypads[0]=((~(JOYPAD_IO.fires)) & 3)<<(16);
- JOYPAD_IO.directions=0xfffe;
- jp_joypads[0] |= ((~(JOYPAD_IO.directions))>>8) & 15;
- JOYPAD_IO.directions=0xfffd;
- jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+2);
- JOYPAD_IO.directions=0xfffd;
- jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<4;
- JOYPAD_IO.directions=0xfffb;
- jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+4);
- JOYPAD_IO.directions=0xfffb;
- jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<8;
- JOYPAD_IO.directions=0xfff7;
- jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+6);
- JOYPAD_IO.directions=0xfff7;
- jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<12;
- /* Update joypad 1 */
- JOYPAD_IO.directions=0xffef;
- jp_joypads[1]=((~(JOYPAD_IO.fires)) & (3<<2))<<(16-2);
- JOYPAD_IO.directions=0xffef;
- jp_joypads[1] |= ((~(JOYPAD_IO.directions))>>12) & 15;
- JOYPAD_IO.directions=0xffdf;
- jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16);
- JOYPAD_IO.directions=0xffdf;
- jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<4;
- JOYPAD_IO.directions=0xffbf;
- jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16+2);
- JOYPAD_IO.directions=0xffbf;
- jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<8;
- JOYPAD_IO.directions=0xff7f;
- jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16+4);
- JOYPAD_IO.directions=0xff7f;
- jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<12;
- }