Mercurial > sdl-ios-xcode
view src/joystick/bsd/SDL_sysjoystick.c @ 2847:7d020441fa81
Don't hardcode RECT for fragment program texture targets.
Now we can generate what a given system needs when compiling the shader.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Sun, 07 Dec 2008 07:06:34 +0000 |
parents | c121d94672cb |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #ifdef SDL_JOYSTICK_USBHID /* * Joystick driver for the uhid(4) interface found in OpenBSD, * NetBSD and FreeBSD. * * Maintainer: <vedge at csoft.org> */ #include <sys/param.h> #include <unistd.h> #include <fcntl.h> #include <errno.h> #if defined(HAVE_USB_H) #include <usb.h> #endif #ifdef __DragonFly__ #include <bus/usb/usb.h> #include <bus/usb/usbhid.h> #else #include <dev/usb/usb.h> #include <dev/usb/usbhid.h> #endif #if defined(HAVE_USBHID_H) #include <usbhid.h> #elif defined(HAVE_LIBUSB_H) #include <libusb.h> #elif defined(HAVE_LIBUSBHID_H) #include <libusbhid.h> #endif #ifdef __FREEBSD__ #ifndef __DragonFly__ #include <osreldate.h> #endif #include <sys/joystick.h> #endif #if SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H #include <machine/joystick.h> #endif #include "SDL_joystick.h" #include "../SDL_sysjoystick.h" #include "../SDL_joystick_c.h" #define MAX_UHID_JOYS 4 #define MAX_JOY_JOYS 2 #define MAX_JOYS (MAX_UHID_JOYS + MAX_JOY_JOYS) struct report { struct usb_ctl_report *buf; /* Buffer */ size_t size; /* Buffer size */ int rid; /* Report ID */ enum { SREPORT_UNINIT, SREPORT_CLEAN, SREPORT_DIRTY } status; }; static struct { int uhid_report; hid_kind_t kind; const char *name; } const repinfo[] = { {UHID_INPUT_REPORT, hid_input, "input"}, {UHID_OUTPUT_REPORT, hid_output, "output"}, {UHID_FEATURE_REPORT, hid_feature, "feature"} }; enum { REPORT_INPUT = 0, REPORT_OUTPUT = 1, REPORT_FEATURE = 2 }; enum { JOYAXE_X, JOYAXE_Y, JOYAXE_Z, JOYAXE_SLIDER, JOYAXE_WHEEL, JOYAXE_RX, JOYAXE_RY, JOYAXE_RZ, JOYAXE_count }; struct joystick_hwdata { int fd; char *path; enum { BSDJOY_UHID, /* uhid(4) */ BSDJOY_JOY /* joy(4) */ } type; struct report_desc *repdesc; struct report inreport; int axis_map[JOYAXE_count]; /* map present JOYAXE_* to 0,1,.. */ }; static char *joynames[MAX_JOYS]; static char *joydevnames[MAX_JOYS]; static int report_alloc(struct report *, struct report_desc *, int); static void report_free(struct report *); #ifdef USBHID_UCR_DATA #define REP_BUF_DATA(rep) ((rep)->buf->ucr_data) #else #define REP_BUF_DATA(rep) ((rep)->buf->data) #endif int SDL_SYS_JoystickInit(void) { char s[16]; int i, fd; SDL_numjoysticks = 0; SDL_memset(joynames, 0, sizeof(joynames)); SDL_memset(joydevnames, 0, sizeof(joydevnames)); for (i = 0; i < MAX_UHID_JOYS; i++) { SDL_Joystick nj; SDL_snprintf(s, SDL_arraysize(s), "/dev/uhid%d", i); nj.index = SDL_numjoysticks; joynames[nj.index] = strdup(s); if (SDL_SYS_JoystickOpen(&nj) == 0) { SDL_SYS_JoystickClose(&nj); SDL_numjoysticks++; } else { SDL_free(joynames[nj.index]); joynames[nj.index] = NULL; } } for (i = 0; i < MAX_JOY_JOYS; i++) { SDL_snprintf(s, SDL_arraysize(s), "/dev/joy%d", i); fd = open(s, O_RDONLY); if (fd != -1) { joynames[SDL_numjoysticks++] = strdup(s); close(fd); } } /* Read the default USB HID usage table. */ hid_init(NULL); return (SDL_numjoysticks); } const char * SDL_SYS_JoystickName(int index) { if (joydevnames[index] != NULL) { return (joydevnames[index]); } return (joynames[index]); } static int usage_to_joyaxe(unsigned usage) { int joyaxe; switch (usage) { case HUG_X: joyaxe = JOYAXE_X; break; case HUG_Y: joyaxe = JOYAXE_Y; break; case HUG_Z: joyaxe = JOYAXE_Z; break; case HUG_SLIDER: joyaxe = JOYAXE_SLIDER; break; case HUG_WHEEL: joyaxe = JOYAXE_WHEEL; break; case HUG_RX: joyaxe = JOYAXE_RX; break; case HUG_RY: joyaxe = JOYAXE_RY; break; case HUG_RZ: joyaxe = JOYAXE_RZ; break; default: joyaxe = -1; } return joyaxe; } static unsigned hatval_to_sdl(Sint32 hatval) { static const unsigned hat_dir_map[8] = { SDL_HAT_UP, SDL_HAT_RIGHTUP, SDL_HAT_RIGHT, SDL_HAT_RIGHTDOWN, SDL_HAT_DOWN, SDL_HAT_LEFTDOWN, SDL_HAT_LEFT, SDL_HAT_LEFTUP }; unsigned result; if ((hatval & 7) == hatval) result = hat_dir_map[hatval]; else result = SDL_HAT_CENTERED; return result; } int SDL_SYS_JoystickOpen(SDL_Joystick * joy) { char *path = joynames[joy->index]; struct joystick_hwdata *hw; struct hid_item hitem; struct hid_data *hdata; struct report *rep; int fd; int i; fd = open(path, O_RDONLY); if (fd == -1) { SDL_SetError("%s: %s", path, strerror(errno)); return (-1); } hw = (struct joystick_hwdata *) SDL_malloc(sizeof(struct joystick_hwdata)); if (hw == NULL) { SDL_OutOfMemory(); close(fd); return (-1); } joy->hwdata = hw; hw->fd = fd; hw->path = strdup(path); if (!SDL_strncmp(path, "/dev/joy", 8)) { hw->type = BSDJOY_JOY; joy->naxes = 2; joy->nbuttons = 2; joy->nhats = 0; joy->nballs = 0; joydevnames[joy->index] = strdup("Gameport joystick"); goto usbend; } else { hw->type = BSDJOY_UHID; } { int ax; for (ax = 0; ax < JOYAXE_count; ax++) hw->axis_map[ax] = -1; } hw->repdesc = hid_get_report_desc(fd); if (hw->repdesc == NULL) { SDL_SetError("%s: USB_GET_REPORT_DESC: %s", hw->path, strerror(errno)); goto usberr; } rep = &hw->inreport; if (ioctl(fd, USB_GET_REPORT_ID, &rep->rid) < 0) { rep->rid = -1; /* XXX */ } if (report_alloc(rep, hw->repdesc, REPORT_INPUT) < 0) { goto usberr; } if (rep->size <= 0) { SDL_SetError("%s: Input report descriptor has invalid length", hw->path); goto usberr; } #if defined(USBHID_NEW) || (defined(__FREEBSD__) && __FreeBSD_version >= 500111) hdata = hid_start_parse(hw->repdesc, 1 << hid_input, rep->rid); #else hdata = hid_start_parse(hw->repdesc, 1 << hid_input); #endif if (hdata == NULL) { SDL_SetError("%s: Cannot start HID parser", hw->path); goto usberr; } joy->naxes = 0; joy->nbuttons = 0; joy->nhats = 0; joy->nballs = 0; for (i = 0; i < JOYAXE_count; i++) hw->axis_map[i] = -1; while (hid_get_item(hdata, &hitem) > 0) { char *sp; const char *s; switch (hitem.kind) { case hid_collection: switch (HID_PAGE(hitem.usage)) { case HUP_GENERIC_DESKTOP: switch (HID_USAGE(hitem.usage)) { case HUG_JOYSTICK: case HUG_GAME_PAD: s = hid_usage_in_page(hitem.usage); sp = SDL_malloc(SDL_strlen(s) + 5); SDL_snprintf(sp, SDL_strlen(s) + 5, "%s (%d)", s, joy->index); joydevnames[joy->index] = sp; } } break; case hid_input: switch (HID_PAGE(hitem.usage)) { case HUP_GENERIC_DESKTOP: { unsigned usage = HID_USAGE(hitem.usage); int joyaxe = usage_to_joyaxe(usage); if (joyaxe >= 0) { hw->axis_map[joyaxe] = 1; } else if (usage == HUG_HAT_SWITCH) { joy->nhats++; } break; } case HUP_BUTTON: joy->nbuttons++; break; default: break; } break; default: break; } } hid_end_parse(hdata); for (i = 0; i < JOYAXE_count; i++) if (hw->axis_map[i] > 0) hw->axis_map[i] = joy->naxes++; usbend: /* The poll blocks the event thread. */ fcntl(fd, F_SETFL, O_NONBLOCK); return (0); usberr: close(hw->fd); SDL_free(hw->path); SDL_free(hw); return (-1); } void SDL_SYS_JoystickUpdate(SDL_Joystick * joy) { struct hid_item hitem; struct hid_data *hdata; struct report *rep; int nbutton, naxe = -1; Sint32 v; #if defined(__FREEBSD__) || SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H struct joystick gameport; static int x, y, xmin = 0xffff, ymin = 0xffff, xmax = 0, ymax = 0; if (joy->hwdata->type == BSDJOY_JOY) { if (read(joy->hwdata->fd, &gameport, sizeof gameport) != sizeof gameport) return; if (abs(x - gameport.x) > 8) { x = gameport.x; if (x < xmin) { xmin = x; } if (x > xmax) { xmax = x; } if (xmin == xmax) { xmin--; xmax++; } v = (Sint32) x; v -= (xmax + xmin + 1) / 2; v *= 32768 / ((xmax - xmin + 1) / 2); SDL_PrivateJoystickAxis(joy, 0, v); } if (abs(y - gameport.y) > 8) { y = gameport.y; if (y < ymin) { ymin = y; } if (y > ymax) { ymax = y; } if (ymin == ymax) { ymin--; ymax++; } v = (Sint32) y; v -= (ymax + ymin + 1) / 2; v *= 32768 / ((ymax - ymin + 1) / 2); SDL_PrivateJoystickAxis(joy, 1, v); } if (gameport.b1 != joy->buttons[0]) { SDL_PrivateJoystickButton(joy, 0, gameport.b1); } if (gameport.b2 != joy->buttons[1]) { SDL_PrivateJoystickButton(joy, 1, gameport.b2); } return; } #endif /* defined(__FREEBSD__) || SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H */ rep = &joy->hwdata->inreport; if (read(joy->hwdata->fd, REP_BUF_DATA(rep), rep->size) != rep->size) { return; } #if defined(USBHID_NEW) || (defined(__FREEBSD__) && __FreeBSD_version >= 500111) hdata = hid_start_parse(joy->hwdata->repdesc, 1 << hid_input, rep->rid); #else hdata = hid_start_parse(joy->hwdata->repdesc, 1 << hid_input); #endif if (hdata == NULL) { fprintf(stderr, "%s: Cannot start HID parser\n", joy->hwdata->path); return; } for (nbutton = 0; hid_get_item(hdata, &hitem) > 0;) { switch (hitem.kind) { case hid_input: switch (HID_PAGE(hitem.usage)) { case HUP_GENERIC_DESKTOP: { unsigned usage = HID_USAGE(hitem.usage); int joyaxe = usage_to_joyaxe(usage); if (joyaxe >= 0) { naxe = joy->hwdata->axis_map[joyaxe]; /* scaleaxe */ v = (Sint32) hid_get_data(REP_BUF_DATA(rep), &hitem); v -= (hitem.logical_maximum + hitem.logical_minimum + 1) / 2; v *= 32768 / ((hitem.logical_maximum - hitem.logical_minimum + 1) / 2); if (v != joy->axes[naxe]) { SDL_PrivateJoystickAxis(joy, naxe, v); } } else if (usage == HUG_HAT_SWITCH) { v = (Sint32) hid_get_data(REP_BUF_DATA(rep), &hitem); SDL_PrivateJoystickHat(joy, 0, hatval_to_sdl(v) - hitem.logical_minimum); } break; } case HUP_BUTTON: v = (Sint32) hid_get_data(REP_BUF_DATA(rep), &hitem); if (joy->buttons[nbutton] != v) { SDL_PrivateJoystickButton(joy, nbutton, v); } nbutton++; break; default: continue; } break; default: break; } } hid_end_parse(hdata); return; } /* Function to close a joystick after use */ void SDL_SYS_JoystickClose(SDL_Joystick * joy) { if (SDL_strncmp(joy->hwdata->path, "/dev/joy", 8)) { report_free(&joy->hwdata->inreport); hid_dispose_report_desc(joy->hwdata->repdesc); } close(joy->hwdata->fd); SDL_free(joy->hwdata->path); SDL_free(joy->hwdata); return; } void SDL_SYS_JoystickQuit(void) { int i; for (i = 0; i < MAX_JOYS; i++) { if (joynames[i] != NULL) SDL_free(joynames[i]); if (joydevnames[i] != NULL) SDL_free(joydevnames[i]); } return; } static int report_alloc(struct report *r, struct report_desc *rd, int repind) { int len; #ifdef __DragonFly__ len = hid_report_size(rd, r->rid, repinfo[repind].kind); #elif __FREEBSD__ # if (__FreeBSD_version >= 460000) # if (__FreeBSD_version <= 500111) len = hid_report_size(rd, r->rid, repinfo[repind].kind); # else len = hid_report_size(rd, repinfo[repind].kind, r->rid); # endif # else len = hid_report_size(rd, repinfo[repind].kind, &r->rid); # endif #else # ifdef USBHID_NEW len = hid_report_size(rd, repinfo[repind].kind, r->rid); # else len = hid_report_size(rd, repinfo[repind].kind, &r->rid); # endif #endif if (len < 0) { SDL_SetError("Negative HID report size"); return (-1); } r->size = len; if (r->size > 0) { r->buf = SDL_malloc(sizeof(*r->buf) - sizeof(REP_BUF_DATA(r)) + r->size); if (r->buf == NULL) { SDL_OutOfMemory(); return (-1); } } else { r->buf = NULL; } r->status = SREPORT_CLEAN; return (0); } static void report_free(struct report *r) { if (r->buf != NULL) { SDL_free(r->buf); } r->status = SREPORT_UNINIT; } #endif /* SDL_JOYSTICK_USBHID */ /* vi: set ts=4 sw=4 expandtab: */