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1.1.1.6 ! root 1: /* 1.1 root 2: * UAE - The Un*x Amiga Emulator 1.1.1.6 ! root 3: * 1.1.1.2 root 4: * Joystick emulation for Linux and BSD. They share too much code to 5: * split this file. 1.1.1.6 ! root 6: * ! 7: * This uses the deprecated 0.x Linux joystick API. ! 8: * 1.1 root 9: * Copyright 1997 Bernd Schmidt 1.1.1.2 root 10: * Copyright 1998 Krister Walfridsson 1.1.1.6 ! root 11: * Copyright 2003-2004 Richard Drummond ! 12: * Copyright 2004 Nick Seow (Alternative Linux joystick device path) 1.1 root 13: */ 14: 15: #include "sysconfig.h" 16: #include "sysdeps.h" 17: 18: #include "config.h" 19: #include "options.h" 20: #include "memory.h" 21: #include "custom.h" 1.1.1.6 ! root 22: #include "inputdevice.h" ! 23: ! 24: #define JS_MAXPATHLEN 20 // Longest device name would be "/dev/input/js" ! 25: char js_prefix[JS_MAXPATHLEN]; // Joystick device, which varies, except number 1.1 root 26: 1.1.1.4 root 27: #ifdef HAVE_MACHINE_JOYSTICK_H 1.1 root 28: 1.1.1.2 root 29: /* The BSD way. */ 30: 1.1.1.4 root 31: # include <machine/joystick.h> 32: typedef struct joystick uae_joystick_t; 1.1.1.2 root 33: 34: #define JS_DEVNAME_PREFIX "joy" 35: 36: #else 37: 38: /* The Linux way. */ 1.1 root 39: 40: /* There are too many different versions of <linux/joystick.h>. Rather 41: * than trying to work correctly with all of them, we duplicate the 42: * necessary definitions here. */ 1.1.1.2 root 43: typedef struct 1.1 root 44: { 45: int buttons; 46: int x; 47: int y; 1.1.1.2 root 48: } uae_joystick_t; 1.1 root 49: 1.1.1.6 ! root 50: #define JS_DEVNAME_PREFIX "js" // Try this first 1.1.1.2 root 51: 52: #endif 53: 1.1.1.6 ! root 54: /* Hard code these for the old joystick API */ ! 55: #define MAX_BUTTONS 2 ! 56: #define MAX_AXLES 2 ! 57: #define FIRST_AXLE 0 ! 58: #define FIRST_BUTTON 2 ! 59: ! 60: static int nr_joysticks; 1.1.1.2 root 61: 62: static int js0, js1; 1.1 root 63: 1.1.1.3 root 64: struct joy_range 65: { 66: int minx, maxx, miny, maxy; 1.1.1.6 ! root 67: int centrex, centrey; 1.1.1.3 root 68: } range0, range1; 69: 1.1.1.6 ! root 70: static void read_joy(int nr) 1.1 root 71: { 1.1.1.2 root 72: uae_joystick_t buffer; 1.1 root 73: int len; 74: int fd = nr == 0 ? js0 : js1; 1.1.1.3 root 75: struct joy_range *r = nr == 0 ? &range0 : &range1; 1.1 root 76: 77: if (nr >= nr_joysticks) 1.1.1.6 ! root 78: return; ! 79: 1.1 root 80: len = read(fd, &buffer, sizeof(buffer)); 1.1.1.6 ! root 81: if (len != sizeof(buffer)) ! 82: return; ! 83: ! 84: /* According to old 0.x JS API, we don't know the range ! 85: * or the centre for either axis, so we try to work these ! 86: * out as we go along. ! 87: * ! 88: * Must be a better way to do this . . . ! 89: */ 1.1.1.3 root 90: if (buffer.x < r->minx) r->minx = buffer.x; 91: if (buffer.y < r->miny) r->miny = buffer.y; 92: if (buffer.x > r->maxx) r->maxx = buffer.x; 93: if (buffer.y > r->maxy) r->maxy = buffer.y; 1.1.1.6 ! root 94: ! 95: r->centrex = (r->maxx-r->minx)/2 + r->minx; ! 96: r->centrey = (r->maxy-r->miny)/2 + r->miny; ! 97: ! 98: /* Translate these values to be centred on 0 and ! 99: * feed 'em to the inputdevice system */ ! 100: setjoystickstate (nr, 0, buffer.x - r->centrex, r->centrex); ! 101: setjoystickstate (nr, 1, buffer.y - r->centrey, r->centrey); ! 102: 1.1.1.4 root 103: #ifdef HAVE_MACHINE_JOYSTICK_H 1.1.1.6 ! root 104: setjoybuttonstate (nr, 0, buffer.b1); ! 105: setjoybuttonstate (nr, 1, buffer.b2); 1.1.1.4 root 106: #else 1.1.1.6 ! root 107: setjoybuttonstate (nr, 0, buffer.buttons & 1); ! 108: setjoybuttonstate (nr, 1, buffer.buttons & 2); 1.1.1.4 root 109: #endif 1.1 root 110: } 111: 1.1.1.6 ! root 112: static int init_joysticks(void) 1.1 root 113: { 114: nr_joysticks = 0; 115: js0 = -1; js1 = -1; 1.1.1.6 ! root 116: char js_path[JS_MAXPATHLEN]; // temporary buffer for device name ! 117: ! 118: snprintf (js_prefix, JS_MAXPATHLEN, "/dev/%s", JS_DEVNAME_PREFIX); ! 119: ! 120: snprintf (js_path, JS_MAXPATHLEN, "%s0", js_prefix); ! 121: if ((js0 = open (js_path, O_RDONLY)) >= 0) ! 122: nr_joysticks++; ! 123: ! 124: snprintf (js_path, JS_MAXPATHLEN, "%s1", js_prefix); ! 125: if ((js1 = open (js_path, O_RDONLY)) >= 0) ! 126: nr_joysticks++; ! 127: ! 128: #ifdef __linux__ ! 129: if (nr_joysticks == 0) { ! 130: /* ! 131: * If we haven't found any joysticks yet, ! 132: * look for /dev/input/js* nodes ! 133: */ ! 134: sprintf (js_prefix, "/dev/input/%s", JS_DEVNAME_PREFIX); ! 135: ! 136: snprintf (js_path, JS_MAXPATHLEN, "%s0", js_prefix); ! 137: if ((js0 = open (js_path, O_RDONLY)) >= 0) ! 138: nr_joysticks++; ! 139: ! 140: snprintf (js_path, JS_MAXPATHLEN, "%s1", js_prefix); ! 141: if ((js1 = open (js_path, O_RDONLY)) >= 0) ! 142: nr_joysticks++; 1.1 root 143: } 1.1.1.6 ! root 144: #endif ! 145: ! 146: write_log ("Found %d joystick(s)\n", nr_joysticks); 1.1.1.3 root 147: 148: range0.minx = INT_MAX; 149: range0.maxx = INT_MIN; 150: range0.miny = INT_MAX; 151: range0.maxy = INT_MIN; 152: range1.minx = INT_MAX; 153: range1.maxx = INT_MIN; 154: range1.miny = INT_MAX; 155: range1.maxy = INT_MIN; 1.1.1.6 ! root 156: range0.centrex = 0; ! 157: range1.centrey = 0; ! 158: return 1; 1.1 root 159: } 160: 1.1.1.6 ! root 161: static void close_joysticks(void) 1.1 root 162: { 163: if (js0 >= 0) 1.1.1.3 root 164: close (js0); 1.1 root 165: if (js1 >= 0) 1.1.1.3 root 166: close (js1); 1.1 root 167: } 1.1.1.6 ! root 168: ! 169: static int acquire_joy (int num, int flags) ! 170: { ! 171: return 1; ! 172: } ! 173: ! 174: static void unacquire_joy (int num) ! 175: { ! 176: } ! 177: ! 178: static int get_joystick_num (void) ! 179: { ! 180: return nr_joysticks; ! 181: } ! 182: ! 183: static void read_joysticks (void) ! 184: { ! 185: int i; ! 186: for (i = 0; i < get_joystick_num (); i++) { ! 187: if (currprefs.input_selected_setting == 0) { ! 188: if (jsem_isjoy (0, &currprefs) != i && jsem_isjoy (1, &currprefs) != i) ! 189: continue; ! 190: } ! 191: read_joy (i); ! 192: } ! 193: } ! 194: ! 195: static char *get_joystick_name (int joy) ! 196: { ! 197: static char name[100]; ! 198: sprintf (name, "%d: %s%d", joy + 1, js_prefix, joy); ! 199: return name; ! 200: } ! 201: ! 202: static int get_joystick_widget_num (int joy) ! 203: { ! 204: return MAX_AXLES + MAX_BUTTONS; ! 205: } ! 206: ! 207: static int get_joystick_widget_type (int joy, int num, char *name, uae_u32 *dummy) ! 208: { ! 209: if (num >= MAX_AXLES && num < MAX_AXLES+MAX_BUTTONS) { ! 210: if (name) ! 211: sprintf (name, "Button %d", num + 1 - MAX_AXLES); ! 212: return IDEV_WIDGET_BUTTON; ! 213: } else if (num < MAX_AXLES) { ! 214: if (name) ! 215: sprintf (name, "Axis %d", num + 1); ! 216: return IDEV_WIDGET_AXIS; ! 217: } ! 218: return IDEV_WIDGET_NONE; ! 219: } ! 220: ! 221: static int get_joystick_widget_first (int joy, int type) ! 222: { ! 223: switch (type) { ! 224: case IDEV_WIDGET_BUTTON: ! 225: return FIRST_BUTTON; ! 226: case IDEV_WIDGET_AXIS: ! 227: return FIRST_AXLE; ! 228: } ! 229: ! 230: return -1; ! 231: } ! 232: ! 233: struct inputdevice_functions inputdevicefunc_joystick = { ! 234: init_joysticks, close_joysticks, acquire_joy, unacquire_joy, ! 235: read_joysticks, get_joystick_num, get_joystick_name, ! 236: get_joystick_widget_num, get_joystick_widget_type, ! 237: get_joystick_widget_first ! 238: }; ! 239: ! 240: /* ! 241: * Set default inputdevice config for joysticks ! 242: */ ! 243: void input_get_default_joystick (struct uae_input_device *uid) ! 244: { ! 245: int i, port; ! 246: ! 247: for (i = 0; i < nr_joysticks; i++) { ! 248: port = i & 1; ! 249: uid[i].eventid[ID_AXIS_OFFSET + 0][0] = port ? INPUTEVENT_JOY2_HORIZ : INPUTEVENT_JOY1_HORIZ; ! 250: uid[i].eventid[ID_AXIS_OFFSET + 1][0] = port ? INPUTEVENT_JOY2_VERT : INPUTEVENT_JOY1_VERT; ! 251: uid[i].eventid[ID_BUTTON_OFFSET + 0][0] = port ? INPUTEVENT_JOY2_FIRE_BUTTON : INPUTEVENT_JOY1_FIRE_BUTTON; ! 252: uid[i].eventid[ID_BUTTON_OFFSET + 1][0] = port ? INPUTEVENT_JOY2_2ND_BUTTON : INPUTEVENT_JOY1_2ND_BUTTON; ! 253: uid[i].eventid[ID_BUTTON_OFFSET + 2][0] = port ? INPUTEVENT_JOY2_3RD_BUTTON : INPUTEVENT_JOY1_3RD_BUTTON; ! 254: } ! 255: uid[0].enabled = 1; ! 256: }
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