summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/SDL2/src/haptic/linux
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/SDL2/src/haptic/linux')
-rw-r--r--3rdparty/SDL2/src/haptic/linux/SDL_syshaptic.c1162
1 files changed, 0 insertions, 1162 deletions
diff --git a/3rdparty/SDL2/src/haptic/linux/SDL_syshaptic.c b/3rdparty/SDL2/src/haptic/linux/SDL_syshaptic.c
deleted file mode 100644
index 7bd96644940..00000000000
--- a/3rdparty/SDL2/src/haptic/linux/SDL_syshaptic.c
+++ /dev/null
@@ -1,1162 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-#include "../../SDL_internal.h"
-
-#ifdef SDL_HAPTIC_LINUX
-
-#include "SDL_assert.h"
-#include "SDL_haptic.h"
-#include "../SDL_syshaptic.h"
-#include "SDL_joystick.h"
-#include "../../joystick/SDL_sysjoystick.h" /* For the real SDL_Joystick */
-#include "../../joystick/linux/SDL_sysjoystick_c.h" /* For joystick hwdata */
-#include "../../core/linux/SDL_udev.h"
-
-#include <unistd.h> /* close */
-#include <linux/input.h> /* Force feedback linux stuff. */
-#include <fcntl.h> /* O_RDWR */
-#include <limits.h> /* INT_MAX */
-#include <errno.h> /* errno, strerror */
-#include <math.h> /* atan2 */
-#include <sys/stat.h> /* stat */
-
-/* Just in case. */
-#ifndef M_PI
-# define M_PI 3.14159265358979323846
-#endif
-
-
-#define MAX_HAPTICS 32 /* It's doubtful someone has more then 32 evdev */
-
-static int MaybeAddDevice(const char *path);
-#if SDL_USE_LIBUDEV
-static int MaybeRemoveDevice(const char *path);
-void haptic_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath);
-#endif /* SDL_USE_LIBUDEV */
-
-/*
- * List of available haptic devices.
- */
-typedef struct SDL_hapticlist_item
-{
- char *fname; /* Dev path name (like /dev/input/event1) */
- SDL_Haptic *haptic; /* Associated haptic. */
- dev_t dev_num;
- struct SDL_hapticlist_item *next;
-} SDL_hapticlist_item;
-
-
-/*
- * Haptic system hardware data.
- */
-struct haptic_hwdata
-{
- int fd; /* File descriptor of the device. */
- char *fname; /* Points to the name in SDL_hapticlist. */
-};
-
-
-/*
- * Haptic system effect data.
- */
-struct haptic_hweffect
-{
- struct ff_effect effect; /* The linux kernel effect structure. */
-};
-
-static SDL_hapticlist_item *SDL_hapticlist = NULL;
-static SDL_hapticlist_item *SDL_hapticlist_tail = NULL;
-static int numhaptics = 0;
-
-#define test_bit(nr, addr) \
- (((1UL << ((nr) & 31)) & (((const unsigned int *) addr)[(nr) >> 5])) != 0)
-#define EV_TEST(ev,f) \
- if (test_bit((ev), features)) ret |= (f);
-/*
- * Test whether a device has haptic properties.
- * Returns available properties or 0 if there are none.
- */
-static int
-EV_IsHaptic(int fd)
-{
- unsigned int ret;
- unsigned long features[1 + FF_MAX / sizeof(unsigned long)];
-
- /* Ask device for what it has. */
- ret = 0;
- if (ioctl(fd, EVIOCGBIT(EV_FF, sizeof(features)), features) < 0) {
- return SDL_SetError("Haptic: Unable to get device's features: %s",
- strerror(errno));
- }
-
- /* Convert supported features to SDL_HAPTIC platform-neutral features. */
- EV_TEST(FF_CONSTANT, SDL_HAPTIC_CONSTANT);
- EV_TEST(FF_SINE, SDL_HAPTIC_SINE);
- /* !!! FIXME: put this back when we have more bits in 2.1 */
- /* EV_TEST(FF_SQUARE, SDL_HAPTIC_SQUARE); */
- EV_TEST(FF_TRIANGLE, SDL_HAPTIC_TRIANGLE);
- EV_TEST(FF_SAW_UP, SDL_HAPTIC_SAWTOOTHUP);
- EV_TEST(FF_SAW_DOWN, SDL_HAPTIC_SAWTOOTHDOWN);
- EV_TEST(FF_RAMP, SDL_HAPTIC_RAMP);
- EV_TEST(FF_SPRING, SDL_HAPTIC_SPRING);
- EV_TEST(FF_FRICTION, SDL_HAPTIC_FRICTION);
- EV_TEST(FF_DAMPER, SDL_HAPTIC_DAMPER);
- EV_TEST(FF_INERTIA, SDL_HAPTIC_INERTIA);
- EV_TEST(FF_CUSTOM, SDL_HAPTIC_CUSTOM);
- EV_TEST(FF_GAIN, SDL_HAPTIC_GAIN);
- EV_TEST(FF_AUTOCENTER, SDL_HAPTIC_AUTOCENTER);
- EV_TEST(FF_RUMBLE, SDL_HAPTIC_LEFTRIGHT);
-
- /* Return what it supports. */
- return ret;
-}
-
-
-/*
- * Tests whether a device is a mouse or not.
- */
-static int
-EV_IsMouse(int fd)
-{
- unsigned long argp[40];
-
- /* Ask for supported features. */
- if (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(argp)), argp) < 0) {
- return -1;
- }
-
- /* Currently we only test for BTN_MOUSE which can give fake positives. */
- if (test_bit(BTN_MOUSE, argp) != 0) {
- return 1;
- }
-
- return 0;
-}
-
-/*
- * Initializes the haptic subsystem by finding available devices.
- */
-int
-SDL_SYS_HapticInit(void)
-{
- const char joydev_pattern[] = "/dev/input/event%d";
- char path[PATH_MAX];
- int i, j;
-
- /*
- * Limit amount of checks to MAX_HAPTICS since we may or may not have
- * permission to some or all devices.
- */
- i = 0;
- for (j = 0; j < MAX_HAPTICS; ++j) {
-
- snprintf(path, PATH_MAX, joydev_pattern, i++);
- MaybeAddDevice(path);
- }
-
-#if SDL_USE_LIBUDEV
- if (SDL_UDEV_Init() < 0) {
- return SDL_SetError("Could not initialize UDEV");
- }
-
- if ( SDL_UDEV_AddCallback(haptic_udev_callback) < 0) {
- SDL_UDEV_Quit();
- return SDL_SetError("Could not setup haptic <-> udev callback");
- }
-#endif /* SDL_USE_LIBUDEV */
-
- return numhaptics;
-}
-
-int
-SDL_SYS_NumHaptics()
-{
- return numhaptics;
-}
-
-static SDL_hapticlist_item *
-HapticByDevIndex(int device_index)
-{
- SDL_hapticlist_item *item = SDL_hapticlist;
-
- if ((device_index < 0) || (device_index >= numhaptics)) {
- return NULL;
- }
-
- while (device_index > 0) {
- SDL_assert(item != NULL);
- --device_index;
- item = item->next;
- }
-
- return item;
-}
-
-#if SDL_USE_LIBUDEV
-void haptic_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath)
-{
- if (devpath == NULL || !(udev_class & SDL_UDEV_DEVICE_JOYSTICK)) {
- return;
- }
-
- switch( udev_type )
- {
- case SDL_UDEV_DEVICEADDED:
- MaybeAddDevice(devpath);
- break;
-
- case SDL_UDEV_DEVICEREMOVED:
- MaybeRemoveDevice(devpath);
- break;
-
- default:
- break;
- }
-
-}
-#endif /* SDL_USE_LIBUDEV */
-
-static int
-MaybeAddDevice(const char *path)
-{
- struct stat sb;
- int fd;
- int success;
- SDL_hapticlist_item *item;
-
- if (path == NULL) {
- return -1;
- }
-
- /* check to see if file exists */
- if (stat(path, &sb) != 0) {
- return -1;
- }
-
- /* check for duplicates */
- for (item = SDL_hapticlist; item != NULL; item = item->next) {
- if (item->dev_num == sb.st_rdev) {
- return -1; /* duplicate. */
- }
- }
-
- /* try to open */
- fd = open(path, O_RDWR, 0);
- if (fd < 0) {
- return -1;
- }
-
-#ifdef DEBUG_INPUT_EVENTS
- printf("Checking %s\n", path);
-#endif
-
- /* see if it works */
- success = EV_IsHaptic(fd);
- close(fd);
- if (success <= 0) {
- return -1;
- }
-
- item = (SDL_hapticlist_item *) SDL_calloc(1, sizeof (SDL_hapticlist_item));
- if (item == NULL) {
- return -1;
- }
-
- item->fname = SDL_strdup(path);
- if (item->fname == NULL) {
- SDL_free(item);
- return -1;
- }
-
- item->dev_num = sb.st_rdev;
-
- /* TODO: should we add instance IDs? */
- if (SDL_hapticlist_tail == NULL) {
- SDL_hapticlist = SDL_hapticlist_tail = item;
- } else {
- SDL_hapticlist_tail->next = item;
- SDL_hapticlist_tail = item;
- }
-
- ++numhaptics;
-
- /* !!! TODO: Send a haptic add event? */
-
- return numhaptics;
-}
-
-#if SDL_USE_LIBUDEV
-static int
-MaybeRemoveDevice(const char* path)
-{
- SDL_hapticlist_item *item;
- SDL_hapticlist_item *prev = NULL;
-
- if (path == NULL) {
- return -1;
- }
-
- for (item = SDL_hapticlist; item != NULL; item = item->next) {
- /* found it, remove it. */
- if (SDL_strcmp(path, item->fname) == 0) {
- const int retval = item->haptic ? item->haptic->index : -1;
-
- if (prev != NULL) {
- prev->next = item->next;
- } else {
- SDL_assert(SDL_hapticlist == item);
- SDL_hapticlist = item->next;
- }
- if (item == SDL_hapticlist_tail) {
- SDL_hapticlist_tail = prev;
- }
-
- /* Need to decrement the haptic count */
- --numhaptics;
- /* !!! TODO: Send a haptic remove event? */
-
- SDL_free(item->fname);
- SDL_free(item);
- return retval;
- }
- prev = item;
- }
-
- return -1;
-}
-#endif /* SDL_USE_LIBUDEV */
-
-/*
- * Gets the name from a file descriptor.
- */
-static const char *
-SDL_SYS_HapticNameFromFD(int fd)
-{
- static char namebuf[128];
-
- /* We use the evdev name ioctl. */
- if (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) <= 0) {
- return NULL;
- }
-
- return namebuf;
-}
-
-
-/*
- * Return the name of a haptic device, does not need to be opened.
- */
-const char *
-SDL_SYS_HapticName(int index)
-{
- SDL_hapticlist_item *item;
- int fd;
- const char *name;
-
- item = HapticByDevIndex(index);
- /* Open the haptic device. */
- name = NULL;
- fd = open(item->fname, O_RDONLY, 0);
-
- if (fd >= 0) {
-
- name = SDL_SYS_HapticNameFromFD(fd);
- if (name == NULL) {
- /* No name found, return device character device */
- name = item->fname;
- }
- close(fd);
- }
-
- return name;
-}
-
-
-/*
- * Opens the haptic device from the file descriptor.
- */
-static int
-SDL_SYS_HapticOpenFromFD(SDL_Haptic * haptic, int fd)
-{
- /* Allocate the hwdata */
- haptic->hwdata = (struct haptic_hwdata *)
- SDL_malloc(sizeof(*haptic->hwdata));
- if (haptic->hwdata == NULL) {
- SDL_OutOfMemory();
- goto open_err;
- }
- SDL_memset(haptic->hwdata, 0, sizeof(*haptic->hwdata));
-
- /* Set the data. */
- haptic->hwdata->fd = fd;
- haptic->supported = EV_IsHaptic(fd);
- haptic->naxes = 2; /* Hardcoded for now, not sure if it's possible to find out. */
-
- /* Set the effects */
- if (ioctl(fd, EVIOCGEFFECTS, &haptic->neffects) < 0) {
- SDL_SetError("Haptic: Unable to query device memory: %s",
- strerror(errno));
- goto open_err;
- }
- haptic->nplaying = haptic->neffects; /* Linux makes no distinction. */
- haptic->effects = (struct haptic_effect *)
- SDL_malloc(sizeof(struct haptic_effect) * haptic->neffects);
- if (haptic->effects == NULL) {
- SDL_OutOfMemory();
- goto open_err;
- }
- /* Clear the memory */
- SDL_memset(haptic->effects, 0,
- sizeof(struct haptic_effect) * haptic->neffects);
-
- return 0;
-
- /* Error handling */
- open_err:
- close(fd);
- if (haptic->hwdata != NULL) {
- SDL_free(haptic->hwdata);
- haptic->hwdata = NULL;
- }
- return -1;
-}
-
-
-/*
- * Opens a haptic device for usage.
- */
-int
-SDL_SYS_HapticOpen(SDL_Haptic * haptic)
-{
- int fd;
- int ret;
- SDL_hapticlist_item *item;
-
- item = HapticByDevIndex(haptic->index);
- /* Open the character device */
- fd = open(item->fname, O_RDWR, 0);
- if (fd < 0) {
- return SDL_SetError("Haptic: Unable to open %s: %s",
- item->fname, strerror(errno));
- }
-
- /* Try to create the haptic. */
- ret = SDL_SYS_HapticOpenFromFD(haptic, fd); /* Already closes on error. */
- if (ret < 0) {
- return -1;
- }
-
- /* Set the fname. */
- haptic->hwdata->fname = SDL_strdup( item->fname );
- return 0;
-}
-
-
-/*
- * Opens a haptic device from first mouse it finds for usage.
- */
-int
-SDL_SYS_HapticMouse(void)
-{
- int fd;
- int device_index = 0;
- SDL_hapticlist_item *item;
-
- for (item = SDL_hapticlist; item; item = item->next) {
- /* Open the device. */
- fd = open(item->fname, O_RDWR, 0);
- if (fd < 0) {
- return SDL_SetError("Haptic: Unable to open %s: %s",
- item->fname, strerror(errno));
- }
-
- /* Is it a mouse? */
- if (EV_IsMouse(fd)) {
- close(fd);
- return device_index;
- }
-
- close(fd);
-
- ++device_index;
- }
-
- return -1;
-}
-
-
-/*
- * Checks to see if a joystick has haptic features.
- */
-int
-SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick)
-{
- return EV_IsHaptic(joystick->hwdata->fd);
-}
-
-
-/*
- * Checks to see if the haptic device and joystick are in reality the same.
- */
-int
-SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic, SDL_Joystick * joystick)
-{
- /* We are assuming Linux is using evdev which should trump the old
- * joystick methods. */
- if (SDL_strcmp(joystick->hwdata->fname, haptic->hwdata->fname) == 0) {
- return 1;
- }
- return 0;
-}
-
-
-/*
- * Opens a SDL_Haptic from a SDL_Joystick.
- */
-int
-SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic, SDL_Joystick * joystick)
-{
- int device_index = 0;
- int fd;
- int ret;
- SDL_hapticlist_item *item;
-
- /* Find the joystick in the haptic list. */
- for (item = SDL_hapticlist; item; item = item->next) {
- if (SDL_strcmp(item->fname, joystick->hwdata->fname) == 0) {
- break;
- }
- ++device_index;
- }
- haptic->index = device_index;
-
- if (device_index >= MAX_HAPTICS) {
- return SDL_SetError("Haptic: Joystick doesn't have Haptic capabilities");
- }
-
- fd = open(joystick->hwdata->fname, O_RDWR, 0);
- if (fd < 0) {
- return SDL_SetError("Haptic: Unable to open %s: %s",
- joystick->hwdata->fname, strerror(errno));
- }
- ret = SDL_SYS_HapticOpenFromFD(haptic, fd); /* Already closes on error. */
- if (ret < 0) {
- return -1;
- }
-
- haptic->hwdata->fname = SDL_strdup( joystick->hwdata->fname );
-
- return 0;
-}
-
-
-/*
- * Closes the haptic device.
- */
-void
-SDL_SYS_HapticClose(SDL_Haptic * haptic)
-{
- if (haptic->hwdata) {
-
- /* Free effects. */
- SDL_free(haptic->effects);
- haptic->effects = NULL;
- haptic->neffects = 0;
-
- /* Clean up */
- close(haptic->hwdata->fd);
-
- /* Free */
- SDL_free(haptic->hwdata->fname);
- SDL_free(haptic->hwdata);
- haptic->hwdata = NULL;
- }
-
- /* Clear the rest. */
- SDL_memset(haptic, 0, sizeof(SDL_Haptic));
-}
-
-
-/*
- * Clean up after system specific haptic stuff
- */
-void
-SDL_SYS_HapticQuit(void)
-{
- SDL_hapticlist_item *item = NULL;
- SDL_hapticlist_item *next = NULL;
-
- for (item = SDL_hapticlist; item; item = next) {
- next = item->next;
- /* Opened and not closed haptics are leaked, this is on purpose.
- * Close your haptic devices after usage. */
- SDL_free(item->fname);
- SDL_free(item);
- }
-
-#if SDL_USE_LIBUDEV
- SDL_UDEV_DelCallback(haptic_udev_callback);
- SDL_UDEV_Quit();
-#endif /* SDL_USE_LIBUDEV */
-
- numhaptics = 0;
- SDL_hapticlist = NULL;
- SDL_hapticlist_tail = NULL;
-}
-
-
-/*
- * Converts an SDL button to a ff_trigger button.
- */
-static Uint16
-SDL_SYS_ToButton(Uint16 button)
-{
- Uint16 ff_button;
-
- ff_button = 0;
-
- /*
- * Not sure what the proper syntax is because this actually isn't implemented
- * in the current kernel from what I've seen (2.6.26).
- */
- if (button != 0) {
- ff_button = BTN_GAMEPAD + button - 1;
- }
-
- return ff_button;
-}
-
-
-/*
- * Initializes the ff_effect usable direction from a SDL_HapticDirection.
- */
-static int
-SDL_SYS_ToDirection(Uint16 *dest, SDL_HapticDirection * src)
-{
- Uint32 tmp;
-
- switch (src->type) {
- case SDL_HAPTIC_POLAR:
- /* Linux directions start from south.
- (and range from 0 to 0xFFFF)
- Quoting include/linux/input.h, line 926:
- Direction of the effect is encoded as follows:
- 0 deg -> 0x0000 (down)
- 90 deg -> 0x4000 (left)
- 180 deg -> 0x8000 (up)
- 270 deg -> 0xC000 (right)
- The force pulls into the direction specified by Linux directions,
- i.e. the opposite convention of SDL directions.
- */
- tmp = ((src->dir[0] % 36000) * 0x8000) / 18000; /* convert to range [0,0xFFFF] */
- *dest = (Uint16) tmp;
- break;
-
- case SDL_HAPTIC_SPHERICAL:
- /*
- We convert to polar, because that's the only supported direction on Linux.
- The first value of a spherical direction is practically the same as a
- Polar direction, except that we have to add 90 degrees. It is the angle
- from EAST {1,0} towards SOUTH {0,1}.
- --> add 9000
- --> finally convert to [0,0xFFFF] as in case SDL_HAPTIC_POLAR.
- */
- tmp = ((src->dir[0]) + 9000) % 36000; /* Convert to polars */
- tmp = (tmp * 0x8000) / 18000; /* convert to range [0,0xFFFF] */
- *dest = (Uint16) tmp;
- break;
-
- case SDL_HAPTIC_CARTESIAN:
- if (!src->dir[1])
- *dest = (src->dir[0] >= 0 ? 0x4000 : 0xC000);
- else if (!src->dir[0])
- *dest = (src->dir[1] >= 0 ? 0x8000 : 0);
- else {
- float f = SDL_atan2(src->dir[1], src->dir[0]); /* Ideally we'd use fixed point math instead of floats... */
- /*
- atan2 takes the parameters: Y-axis-value and X-axis-value (in that order)
- - Y-axis-value is the second coordinate (from center to SOUTH)
- - X-axis-value is the first coordinate (from center to EAST)
- We add 36000, because atan2 also returns negative values. Then we practically
- have the first spherical value. Therefore we proceed as in case
- SDL_HAPTIC_SPHERICAL and add another 9000 to get the polar value.
- --> add 45000 in total
- --> finally convert to [0,0xFFFF] as in case SDL_HAPTIC_POLAR.
- */
- tmp = (((Sint32) (f * 18000. / M_PI)) + 45000) % 36000;
- tmp = (tmp * 0x8000) / 18000; /* convert to range [0,0xFFFF] */
- *dest = (Uint16) tmp;
- }
- break;
-
- default:
- return SDL_SetError("Haptic: Unsupported direction type.");
- }
-
- return 0;
-}
-
-
-#define CLAMP(x) (((x) > 32767) ? 32767 : x)
-/*
- * Initializes the Linux effect struct from a haptic_effect.
- * Values above 32767 (for unsigned) are unspecified so we must clamp.
- */
-static int
-SDL_SYS_ToFFEffect(struct ff_effect *dest, SDL_HapticEffect * src)
-{
- SDL_HapticConstant *constant;
- SDL_HapticPeriodic *periodic;
- SDL_HapticCondition *condition;
- SDL_HapticRamp *ramp;
- SDL_HapticLeftRight *leftright;
-
- /* Clear up */
- SDL_memset(dest, 0, sizeof(struct ff_effect));
-
- switch (src->type) {
- case SDL_HAPTIC_CONSTANT:
- constant = &src->constant;
-
- /* Header */
- dest->type = FF_CONSTANT;
- if (SDL_SYS_ToDirection(&dest->direction, &constant->direction) == -1)
- return -1;
-
- /* Replay */
- dest->replay.length = (constant->length == SDL_HAPTIC_INFINITY) ?
- 0 : CLAMP(constant->length);
- dest->replay.delay = CLAMP(constant->delay);
-
- /* Trigger */
- dest->trigger.button = SDL_SYS_ToButton(constant->button);
- dest->trigger.interval = CLAMP(constant->interval);
-
- /* Constant */
- dest->u.constant.level = constant->level;
-
- /* Envelope */
- dest->u.constant.envelope.attack_length =
- CLAMP(constant->attack_length);
- dest->u.constant.envelope.attack_level =
- CLAMP(constant->attack_level);
- dest->u.constant.envelope.fade_length = CLAMP(constant->fade_length);
- dest->u.constant.envelope.fade_level = CLAMP(constant->fade_level);
-
- break;
-
- case SDL_HAPTIC_SINE:
- /* !!! FIXME: put this back when we have more bits in 2.1 */
- /* case SDL_HAPTIC_SQUARE: */
- case SDL_HAPTIC_TRIANGLE:
- case SDL_HAPTIC_SAWTOOTHUP:
- case SDL_HAPTIC_SAWTOOTHDOWN:
- periodic = &src->periodic;
-
- /* Header */
- dest->type = FF_PERIODIC;
- if (SDL_SYS_ToDirection(&dest->direction, &periodic->direction) == -1)
- return -1;
-
- /* Replay */
- dest->replay.length = (periodic->length == SDL_HAPTIC_INFINITY) ?
- 0 : CLAMP(periodic->length);
- dest->replay.delay = CLAMP(periodic->delay);
-
- /* Trigger */
- dest->trigger.button = SDL_SYS_ToButton(periodic->button);
- dest->trigger.interval = CLAMP(periodic->interval);
-
- /* Periodic */
- if (periodic->type == SDL_HAPTIC_SINE)
- dest->u.periodic.waveform = FF_SINE;
- /* !!! FIXME: put this back when we have more bits in 2.1 */
- /* else if (periodic->type == SDL_HAPTIC_SQUARE)
- dest->u.periodic.waveform = FF_SQUARE; */
- else if (periodic->type == SDL_HAPTIC_TRIANGLE)
- dest->u.periodic.waveform = FF_TRIANGLE;
- else if (periodic->type == SDL_HAPTIC_SAWTOOTHUP)
- dest->u.periodic.waveform = FF_SAW_UP;
- else if (periodic->type == SDL_HAPTIC_SAWTOOTHDOWN)
- dest->u.periodic.waveform = FF_SAW_DOWN;
- dest->u.periodic.period = CLAMP(periodic->period);
- dest->u.periodic.magnitude = periodic->magnitude;
- dest->u.periodic.offset = periodic->offset;
- /* Linux phase is defined in interval "[0x0000, 0x10000[", corresponds with "[0deg, 360deg[" phase shift. */
- dest->u.periodic.phase = ((Uint32)periodic->phase * 0x10000U) / 36000;
-
- /* Envelope */
- dest->u.periodic.envelope.attack_length =
- CLAMP(periodic->attack_length);
- dest->u.periodic.envelope.attack_level =
- CLAMP(periodic->attack_level);
- dest->u.periodic.envelope.fade_length = CLAMP(periodic->fade_length);
- dest->u.periodic.envelope.fade_level = CLAMP(periodic->fade_level);
-
- break;
-
- case SDL_HAPTIC_SPRING:
- case SDL_HAPTIC_DAMPER:
- case SDL_HAPTIC_INERTIA:
- case SDL_HAPTIC_FRICTION:
- condition = &src->condition;
-
- /* Header */
- if (condition->type == SDL_HAPTIC_SPRING)
- dest->type = FF_SPRING;
- else if (condition->type == SDL_HAPTIC_DAMPER)
- dest->type = FF_DAMPER;
- else if (condition->type == SDL_HAPTIC_INERTIA)
- dest->type = FF_INERTIA;
- else if (condition->type == SDL_HAPTIC_FRICTION)
- dest->type = FF_FRICTION;
- dest->direction = 0; /* Handled by the condition-specifics. */
-
- /* Replay */
- dest->replay.length = (condition->length == SDL_HAPTIC_INFINITY) ?
- 0 : CLAMP(condition->length);
- dest->replay.delay = CLAMP(condition->delay);
-
- /* Trigger */
- dest->trigger.button = SDL_SYS_ToButton(condition->button);
- dest->trigger.interval = CLAMP(condition->interval);
-
- /* Condition */
- /* X axis */
- dest->u.condition[0].right_saturation = condition->right_sat[0];
- dest->u.condition[0].left_saturation = condition->left_sat[0];
- dest->u.condition[0].right_coeff = condition->right_coeff[0];
- dest->u.condition[0].left_coeff = condition->left_coeff[0];
- dest->u.condition[0].deadband = condition->deadband[0];
- dest->u.condition[0].center = condition->center[0];
- /* Y axis */
- dest->u.condition[1].right_saturation = condition->right_sat[1];
- dest->u.condition[1].left_saturation = condition->left_sat[1];
- dest->u.condition[1].right_coeff = condition->right_coeff[1];
- dest->u.condition[1].left_coeff = condition->left_coeff[1];
- dest->u.condition[1].deadband = condition->deadband[1];
- dest->u.condition[1].center = condition->center[1];
-
- /*
- * There is no envelope in the linux force feedback api for conditions.
- */
-
- break;
-
- case SDL_HAPTIC_RAMP:
- ramp = &src->ramp;
-
- /* Header */
- dest->type = FF_RAMP;
- if (SDL_SYS_ToDirection(&dest->direction, &ramp->direction) == -1)
- return -1;
-
- /* Replay */
- dest->replay.length = (ramp->length == SDL_HAPTIC_INFINITY) ?
- 0 : CLAMP(ramp->length);
- dest->replay.delay = CLAMP(ramp->delay);
-
- /* Trigger */
- dest->trigger.button = SDL_SYS_ToButton(ramp->button);
- dest->trigger.interval = CLAMP(ramp->interval);
-
- /* Ramp */
- dest->u.ramp.start_level = ramp->start;
- dest->u.ramp.end_level = ramp->end;
-
- /* Envelope */
- dest->u.ramp.envelope.attack_length = CLAMP(ramp->attack_length);
- dest->u.ramp.envelope.attack_level = CLAMP(ramp->attack_level);
- dest->u.ramp.envelope.fade_length = CLAMP(ramp->fade_length);
- dest->u.ramp.envelope.fade_level = CLAMP(ramp->fade_level);
-
- break;
-
- case SDL_HAPTIC_LEFTRIGHT:
- leftright = &src->leftright;
-
- /* Header */
- dest->type = FF_RUMBLE;
- dest->direction = 0;
-
- /* Replay */
- dest->replay.length = (leftright->length == SDL_HAPTIC_INFINITY) ?
- 0 : CLAMP(leftright->length);
-
- /* Trigger */
- dest->trigger.button = 0;
- dest->trigger.interval = 0;
-
- /* Rumble */
- dest->u.rumble.strong_magnitude = leftright->large_magnitude;
- dest->u.rumble.weak_magnitude = leftright->small_magnitude;
-
- break;
-
-
- default:
- return SDL_SetError("Haptic: Unknown effect type.");
- }
-
- return 0;
-}
-
-
-/*
- * Creates a new haptic effect.
- */
-int
-SDL_SYS_HapticNewEffect(SDL_Haptic * haptic, struct haptic_effect *effect,
- SDL_HapticEffect * base)
-{
- struct ff_effect *linux_effect;
-
- /* Allocate the hardware effect */
- effect->hweffect = (struct haptic_hweffect *)
- SDL_malloc(sizeof(struct haptic_hweffect));
- if (effect->hweffect == NULL) {
- return SDL_OutOfMemory();
- }
-
- /* Prepare the ff_effect */
- linux_effect = &effect->hweffect->effect;
- if (SDL_SYS_ToFFEffect(linux_effect, base) != 0) {
- goto new_effect_err;
- }
- linux_effect->id = -1; /* Have the kernel give it an id */
-
- /* Upload the effect */
- if (ioctl(haptic->hwdata->fd, EVIOCSFF, linux_effect) < 0) {
- SDL_SetError("Haptic: Error uploading effect to the device: %s",
- strerror(errno));
- goto new_effect_err;
- }
-
- return 0;
-
- new_effect_err:
- SDL_free(effect->hweffect);
- effect->hweffect = NULL;
- return -1;
-}
-
-
-/*
- * Updates an effect.
- *
- * Note: Dynamically updating the direction can in some cases force
- * the effect to restart and run once.
- */
-int
-SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
- struct haptic_effect *effect,
- SDL_HapticEffect * data)
-{
- struct ff_effect linux_effect;
-
- /* Create the new effect */
- if (SDL_SYS_ToFFEffect(&linux_effect, data) != 0) {
- return -1;
- }
- linux_effect.id = effect->hweffect->effect.id;
-
- /* See if it can be uploaded. */
- if (ioctl(haptic->hwdata->fd, EVIOCSFF, &linux_effect) < 0) {
- return SDL_SetError("Haptic: Error updating the effect: %s",
- strerror(errno));
- }
-
- /* Copy the new effect into memory. */
- SDL_memcpy(&effect->hweffect->effect, &linux_effect,
- sizeof(struct ff_effect));
-
- return effect->hweffect->effect.id;
-}
-
-
-/*
- * Runs an effect.
- */
-int
-SDL_SYS_HapticRunEffect(SDL_Haptic * haptic, struct haptic_effect *effect,
- Uint32 iterations)
-{
- struct input_event run;
-
- /* Prepare to run the effect */
- run.type = EV_FF;
- run.code = effect->hweffect->effect.id;
- /* We don't actually have infinity here, so we just do INT_MAX which is pretty damn close. */
- run.value = (iterations > INT_MAX) ? INT_MAX : iterations;
-
- if (write(haptic->hwdata->fd, (const void *) &run, sizeof(run)) < 0) {
- return SDL_SetError("Haptic: Unable to run the effect: %s", strerror(errno));
- }
-
- return 0;
-}
-
-
-/*
- * Stops an effect.
- */
-int
-SDL_SYS_HapticStopEffect(SDL_Haptic * haptic, struct haptic_effect *effect)
-{
- struct input_event stop;
-
- stop.type = EV_FF;
- stop.code = effect->hweffect->effect.id;
- stop.value = 0;
-
- if (write(haptic->hwdata->fd, (const void *) &stop, sizeof(stop)) < 0) {
- return SDL_SetError("Haptic: Unable to stop the effect: %s",
- strerror(errno));
- }
-
- return 0;
-}
-
-
-/*
- * Frees the effect.
- */
-void
-SDL_SYS_HapticDestroyEffect(SDL_Haptic * haptic, struct haptic_effect *effect)
-{
- if (ioctl(haptic->hwdata->fd, EVIOCRMFF, effect->hweffect->effect.id) < 0) {
- SDL_SetError("Haptic: Error removing the effect from the device: %s",
- strerror(errno));
- }
- SDL_free(effect->hweffect);
- effect->hweffect = NULL;
-}
-
-
-/*
- * Gets the status of a haptic effect.
- */
-int
-SDL_SYS_HapticGetEffectStatus(SDL_Haptic * haptic,
- struct haptic_effect *effect)
-{
-#if 0 /* Not supported atm. */
- struct input_event ie;
-
- ie.type = EV_FF;
- ie.type = EV_FF_STATUS;
- ie.code = effect->hweffect->effect.id;
-
- if (write(haptic->hwdata->fd, &ie, sizeof(ie)) < 0) {
- return SDL_SetError("Haptic: Error getting device status.");
- }
-
- return 0;
-#endif
-
- return -1;
-}
-
-
-/*
- * Sets the gain.
- */
-int
-SDL_SYS_HapticSetGain(SDL_Haptic * haptic, int gain)
-{
- struct input_event ie;
-
- ie.type = EV_FF;
- ie.code = FF_GAIN;
- ie.value = (0xFFFFUL * gain) / 100;
-
- if (write(haptic->hwdata->fd, &ie, sizeof(ie)) < 0) {
- return SDL_SetError("Haptic: Error setting gain: %s", strerror(errno));
- }
-
- return 0;
-}
-
-
-/*
- * Sets the autocentering.
- */
-int
-SDL_SYS_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter)
-{
- struct input_event ie;
-
- ie.type = EV_FF;
- ie.code = FF_AUTOCENTER;
- ie.value = (0xFFFFUL * autocenter) / 100;
-
- if (write(haptic->hwdata->fd, &ie, sizeof(ie)) < 0) {
- return SDL_SetError("Haptic: Error setting autocenter: %s", strerror(errno));
- }
-
- return 0;
-}
-
-
-/*
- * Pausing is not supported atm by linux.
- */
-int
-SDL_SYS_HapticPause(SDL_Haptic * haptic)
-{
- return -1;
-}
-
-
-/*
- * Unpausing is not supported atm by linux.
- */
-int
-SDL_SYS_HapticUnpause(SDL_Haptic * haptic)
-{
- return -1;
-}
-
-
-/*
- * Stops all the currently playing effects.
- */
-int
-SDL_SYS_HapticStopAll(SDL_Haptic * haptic)
-{
- int i, ret;
-
- /* Linux does not support this natively so we have to loop. */
- for (i = 0; i < haptic->neffects; i++) {
- if (haptic->effects[i].hweffect != NULL) {
- ret = SDL_SYS_HapticStopEffect(haptic, &haptic->effects[i]);
- if (ret < 0) {
- return SDL_SetError
- ("Haptic: Error while trying to stop all playing effects.");
- }
- }
- }
- return 0;
-}
-
-#endif /* SDL_HAPTIC_LINUX */
-
-/* vi: set ts=4 sw=4 expandtab: */