view src/joystick/bsd/SDL_sysjoystick.c @ 4427:eada7e321df6 SDL-1.2

Fixed bug #943 Ozkan Sezer 2010-02-06 12:31:06 PST Hi: Here are some small fixes for compiling SDL against mingw-w64. (see http://mingw-w64.sourceforge.net/ . Despite the name, it supports both win32 and win64.) Two patches, one for SDL-1.2 and one for SDL-1.3 attached. src/audio/windx5/directx.h and src/video/windx5/directx.h (both SDL-1.2 and SDL-1.3.) I get compilation errors about some union not having a member named u1 and alike, because of other system headers being included before this one and them already defining DUMMYUNIONNAME and stuff. This header probably assumes that those stuff are defined in windef.h, but mingw-w64 headers define them in _mingw.h. Easily fixed by moving NONAMELESSUNION definition to the top of the file. SDL_dx5yuv.c (SDL-1.2-only) also needs to include the header before SDL_video.h to avoid the same problem. src/thread/win32/SDL_systhread.c (both SDL-1.2 and SDL-1.3.) : The __GNUC__ case for pfnSDL_CurrentBeginThread is 32-bit centric because _beginthreadex returns uintptr_t, not unsigned long which is 32 bits in win64. Changing the return type to uintptr_t fixes it. Hope these are useful. Thanks.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 Mar 2010 15:04:13 +0000
parents 1a7b62893c9d
children e978b888d87a
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 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>

#ifndef __FreeBSD_kernel_version
#define __FreeBSD_kernel_version __FreeBSD_version
#endif

#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)

#if defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063)
struct usb_ctl_report {
	int	ucr_report;
	u_char	ucr_data[1024]; /* filled data size will vary */
};
#endif

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,..*/
	int	x;
	int	y;
	int	xmin;
	int	ymin;
	int	xmax;
	int	ymax;
};

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 *);

#if defined(USBHID_UCR_DATA) || (defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063))
#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);
	hw->x = 0;
	hw->y = 0;
	hw->xmin = 0xffff;
	hw->ymin = 0xffff;
	hw->xmax = 0;
	hw->ymax = 0;
	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 defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063)
       rep->rid = hid_get_report_id(fd);
       if (rep->rid < 0) {
#else
	if (ioctl(fd, USB_GET_REPORT_ID, &rep->rid) < 0) {
#endif
		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_kernel_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;
 
	if (joy->hwdata->type == BSDJOY_JOY) {
		if (read(joy->hwdata->fd, &gameport, sizeof gameport) != sizeof gameport)
			return;
		if (abs(joy->hwdata->x - gameport.x) > 8) {
			joy->hwdata->x = gameport.x;
			if (joy->hwdata->x < joy->hwdata->xmin) {
				joy->hwdata->xmin = joy->hwdata->x;
			}
			if (joy->hwdata->x > joy->hwdata->xmax) {
				joy->hwdata->xmax = joy->hwdata->x;
			}
			if (joy->hwdata->xmin == joy->hwdata->xmax) {
				joy->hwdata->xmin--;
				joy->hwdata->xmax++;
			}
			v = (Sint32)joy->hwdata->x;
			v -= (joy->hwdata->xmax + joy->hwdata->xmin + 1)/2;
			v *= 32768/((joy->hwdata->xmax - joy->hwdata->xmin + 1)/2);
			SDL_PrivateJoystickAxis(joy, 0, v);
		}
		if (abs(joy->hwdata->y - gameport.y) > 8) {
			joy->hwdata->y = gameport.y;
			if (joy->hwdata->y < joy->hwdata->ymin) {
				joy->hwdata->ymin = joy->hwdata->y;
			}
			if (joy->hwdata->y > joy->hwdata->ymax) {
				joy->hwdata->ymax = joy->hwdata->y;
			}
			if (joy->hwdata->ymin == joy->hwdata->ymax) {
				joy->hwdata->ymin--;
				joy->hwdata->ymax++;
			}
			v = (Sint32)joy->hwdata->y;
			v -= (joy->hwdata->ymax + joy->hwdata->ymin + 1)/2;
			v *= 32768/((joy->hwdata->ymax - joy->hwdata->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_kernel_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_kernel_version >= 460000) || defined(__FreeBSD_kernel__)
#  if (__FreeBSD_kernel_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 */