void
SDL_EVDEV_Quit(void)
{
if (_this == NULL) {
return;
}
_this->ref_count -= 1;
if (_this->ref_count < 1) {
#if SDL_USE_LIBUDEV
SDL_UDEV_DelCallback(SDL_EVDEV_udev_callback);
SDL_UDEV_Quit();
#endif /* SDL_USE_LIBUDEV */
if (_this->console_fd >= 0) {
SDL_EVDEV_unmute_keyboard(_this->console_fd, _this->kb_mode);
close(_this->console_fd);
}
/* Remove existing devices */
while(_this->first != NULL) {
SDL_EVDEV_device_removed(_this->first->path);
}
SDL_assert(_this->first == NULL);
SDL_assert(_this->last == NULL);
SDL_assert(_this->num_devices == 0);
SDL_free(_this);
_this = NULL;
}
}
void
SDL_UDEV_Scan(void)
{
struct udev_enumerate *enumerate = NULL;
struct udev_list_entry *devs = NULL;
struct udev_list_entry *item = NULL;
if (_this == NULL) {
return;
}
enumerate = _this->udev_enumerate_new(_this->udev);
if (enumerate == NULL) {
SDL_UDEV_Quit();
SDL_SetError("udev_monitor_new_from_netlink() failed");
return;
}
_this->udev_enumerate_add_match_subsystem(enumerate, "input");
_this->udev_enumerate_add_match_subsystem(enumerate, "sound");
_this->udev_enumerate_scan_devices(enumerate);
devs = _this->udev_enumerate_get_list_entry(enumerate);
for (item = devs; item; item = _this->udev_list_entry_get_next(item)) {
const char *path = _this->udev_list_entry_get_name(item);
struct udev_device *dev = _this->udev_device_new_from_syspath(_this->udev, path);
if (dev != NULL) {
device_event(SDL_UDEV_DEVICEADDED, dev);
_this->udev_device_unref(dev);
}
}
_this->udev_enumerate_unref(enumerate);
}
void
SDL_EVDEV_Quit(void)
{
if (_this == NULL) {
return;
}
_this->ref_count -= 1;
if (_this->ref_count < 1) {
#if SDL_USE_LIBUDEV
SDL_UDEV_DelCallback(SDL_EVDEV_udev_callback);
SDL_UDEV_Quit();
#endif /* SDL_USE_LIBUDEV */
SDL_EVDEV_kbd_quit(_this->kbd);
/* Remove existing devices */
while(_this->first != NULL) {
SDL_EVDEV_device_removed(_this->first->path);
}
SDL_assert(_this->first == NULL);
SDL_assert(_this->last == NULL);
SDL_assert(_this->num_devices == 0);
SDL_free(_this);
_this = NULL;
}
}
int
SDL_UDEV_Init(void)
{
int retval = 0;
if (_this == NULL) {
_this = (SDL_UDEV_PrivateData *) SDL_calloc(1, sizeof(*_this));
if(_this == NULL) {
return SDL_OutOfMemory();
}
retval = SDL_UDEV_LoadLibrary();
if (retval < 0) {
SDL_UDEV_Quit();
return retval;
}
/* Set up udev monitoring
* Listen for input devices (mouse, keyboard, joystick, etc) and sound devices
*/
_this->udev = _this->udev_new();
if (_this->udev == NULL) {
SDL_UDEV_Quit();
return SDL_SetError("udev_new() failed");
}
_this->udev_mon = _this->udev_monitor_new_from_netlink(_this->udev, "udev");
if (_this->udev_mon == NULL) {
SDL_UDEV_Quit();
return SDL_SetError("udev_monitor_new_from_netlink() failed");
}
_this->udev_monitor_filter_add_match_subsystem_devtype(_this->udev_mon, "input", NULL);
_this->udev_monitor_filter_add_match_subsystem_devtype(_this->udev_mon, "sound", NULL);
_this->udev_monitor_enable_receiving(_this->udev_mon);
/* Do an initial scan of existing devices */
SDL_UDEV_Scan();
}
_this->ref_count += 1;
return retval;
}
static int
JoystickInitWithUdev(void)
{
if (SDL_UDEV_Init() < 0) {
return SDL_SetError("Could not initialize UDEV");
}
/* Set up the udev callback */
if (SDL_UDEV_AddCallback(joystick_udev_callback) < 0) {
SDL_UDEV_Quit();
return SDL_SetError("Could not set up joystick <-> udev callback");
}
/* Force a scan to build the initial device list */
SDL_UDEV_Scan();
return numjoysticks;
}
int
SDL_EVDEV_Init(void)
{
if (_this == NULL) {
_this = (SDL_EVDEV_PrivateData*)SDL_calloc(1, sizeof(*_this));
if (_this == NULL) {
return SDL_OutOfMemory();
}
#if SDL_USE_LIBUDEV
if (SDL_UDEV_Init() < 0) {
SDL_free(_this);
_this = NULL;
return -1;
}
/* Set up the udev callback */
if (SDL_UDEV_AddCallback(SDL_EVDEV_udev_callback) < 0) {
SDL_UDEV_Quit();
SDL_free(_this);
_this = NULL;
return -1;
}
/* Force a scan to build the initial device list */
SDL_UDEV_Scan();
#else
/* TODO: Scan the devices manually, like a caveman */
#endif /* SDL_USE_LIBUDEV */
/* We need a physical terminal (not PTS) to be able to translate key
code to symbols via the kernel tables */
_this->console_fd = SDL_EVDEV_get_active_tty();
/* Mute the keyboard so keystrokes only generate evdev events and do not
leak through to the console */
SDL_EVDEV_mute_keyboard(_this->console_fd, &_this->kb_mode);
}
_this->ref_count += 1;
return 0;
}
int
SDL_EVDEV_Init(void)
{
if (_this == NULL) {
_this = (SDL_EVDEV_PrivateData*)SDL_calloc(1, sizeof(*_this));
if (_this == NULL) {
return SDL_OutOfMemory();
}
#if SDL_USE_LIBUDEV
if (SDL_UDEV_Init() < 0) {
SDL_free(_this);
_this = NULL;
return -1;
}
/* Set up the udev callback */
if (SDL_UDEV_AddCallback(SDL_EVDEV_udev_callback) < 0) {
SDL_UDEV_Quit();
SDL_free(_this);
_this = NULL;
return -1;
}
/* Force a scan to build the initial device list */
SDL_UDEV_Scan();
#else
/* TODO: Scan the devices manually, like a caveman */
#endif /* SDL_USE_LIBUDEV */
_this->kbd = SDL_EVDEV_kbd_init();
}
_this->ref_count += 1;
return 0;
}
