diff options
Diffstat (limited to 'libs/raylib/src/external/glfw/src/linux_joystick.c')
| -rw-r--r-- | libs/raylib/src/external/glfw/src/linux_joystick.c | 433 |
1 files changed, 0 insertions, 433 deletions
diff --git a/libs/raylib/src/external/glfw/src/linux_joystick.c b/libs/raylib/src/external/glfw/src/linux_joystick.c deleted file mode 100644 index 1f9b35f..0000000 --- a/libs/raylib/src/external/glfw/src/linux_joystick.c +++ /dev/null @@ -1,433 +0,0 @@ -//======================================================================== -// GLFW 3.4 Linux - www.glfw.org -//------------------------------------------------------------------------ -// Copyright (c) 2002-2006 Marcus Geelnard -// Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.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. -// -//======================================================================== -// It is fine to use C99 in this file because it will not be built with VS -//======================================================================== - -#include "internal.h" - -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/inotify.h> -#include <fcntl.h> -#include <errno.h> -#include <dirent.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#ifndef SYN_DROPPED // < v2.6.39 kernel headers -// Workaround for CentOS-6, which is supported till 2020-11-30, but still on v2.6.32 -#define SYN_DROPPED 3 -#endif - -// Apply an EV_KEY event to the specified joystick -// -static void handleKeyEvent(_GLFWjoystick* js, int code, int value) -{ - _glfwInputJoystickButton(js, - js->linjs.keyMap[code - BTN_MISC], - value ? GLFW_PRESS : GLFW_RELEASE); -} - -// Apply an EV_ABS event to the specified joystick -// -static void handleAbsEvent(_GLFWjoystick* js, int code, int value) -{ - const int index = js->linjs.absMap[code]; - - if (code >= ABS_HAT0X && code <= ABS_HAT3Y) - { - static const char stateMap[3][3] = - { - { GLFW_HAT_CENTERED, GLFW_HAT_UP, GLFW_HAT_DOWN }, - { GLFW_HAT_LEFT, GLFW_HAT_LEFT_UP, GLFW_HAT_LEFT_DOWN }, - { GLFW_HAT_RIGHT, GLFW_HAT_RIGHT_UP, GLFW_HAT_RIGHT_DOWN }, - }; - - const int hat = (code - ABS_HAT0X) / 2; - const int axis = (code - ABS_HAT0X) % 2; - int* state = js->linjs.hats[hat]; - - // NOTE: Looking at several input drivers, it seems all hat events use - // -1 for left / up, 0 for centered and 1 for right / down - if (value == 0) - state[axis] = 0; - else if (value < 0) - state[axis] = 1; - else if (value > 0) - state[axis] = 2; - - _glfwInputJoystickHat(js, index, stateMap[state[0]][state[1]]); - } - else - { - const struct input_absinfo* info = &js->linjs.absInfo[code]; - float normalized = value; - - const int range = info->maximum - info->minimum; - if (range) - { - // Normalize to 0.0 -> 1.0 - normalized = (normalized - info->minimum) / range; - // Normalize to -1.0 -> 1.0 - normalized = normalized * 2.0f - 1.0f; - } - - _glfwInputJoystickAxis(js, index, normalized); - } -} - -// Poll state of absolute axes -// -static void pollAbsState(_GLFWjoystick* js) -{ - for (int code = 0; code < ABS_CNT; code++) - { - if (js->linjs.absMap[code] < 0) - continue; - - struct input_absinfo* info = &js->linjs.absInfo[code]; - - if (ioctl(js->linjs.fd, EVIOCGABS(code), info) < 0) - continue; - - handleAbsEvent(js, code, info->value); - } -} - -#define isBitSet(bit, arr) (arr[(bit) / 8] & (1 << ((bit) % 8))) - -// Attempt to open the specified joystick device -// -static GLFWbool openJoystickDevice(const char* path) -{ - for (int jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++) - { - if (!_glfw.joysticks[jid].present) - continue; - if (strcmp(_glfw.joysticks[jid].linjs.path, path) == 0) - return GLFW_FALSE; - } - - _GLFWjoystickLinux linjs = {0}; - linjs.fd = open(path, O_RDONLY | O_NONBLOCK); - if (linjs.fd == -1) - return GLFW_FALSE; - - char evBits[(EV_CNT + 7) / 8] = {0}; - char keyBits[(KEY_CNT + 7) / 8] = {0}; - char absBits[(ABS_CNT + 7) / 8] = {0}; - struct input_id id; - - if (ioctl(linjs.fd, EVIOCGBIT(0, sizeof(evBits)), evBits) < 0 || - ioctl(linjs.fd, EVIOCGBIT(EV_KEY, sizeof(keyBits)), keyBits) < 0 || - ioctl(linjs.fd, EVIOCGBIT(EV_ABS, sizeof(absBits)), absBits) < 0 || - ioctl(linjs.fd, EVIOCGID, &id) < 0) - { - _glfwInputError(GLFW_PLATFORM_ERROR, - "Linux: Failed to query input device: %s", - strerror(errno)); - close(linjs.fd); - return GLFW_FALSE; - } - - // Ensure this device supports the events expected of a joystick - if (!isBitSet(EV_KEY, evBits) || !isBitSet(EV_ABS, evBits)) - { - close(linjs.fd); - return GLFW_FALSE; - } - - char name[256] = ""; - - if (ioctl(linjs.fd, EVIOCGNAME(sizeof(name)), name) < 0) - strncpy(name, "Unknown", sizeof(name)); - - char guid[33] = ""; - - // Generate a joystick GUID that matches the SDL 2.0.5+ one - if (id.vendor && id.product && id.version) - { - sprintf(guid, "%02x%02x0000%02x%02x0000%02x%02x0000%02x%02x0000", - id.bustype & 0xff, id.bustype >> 8, - id.vendor & 0xff, id.vendor >> 8, - id.product & 0xff, id.product >> 8, - id.version & 0xff, id.version >> 8); - } - else - { - sprintf(guid, "%02x%02x0000%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x00", - id.bustype & 0xff, id.bustype >> 8, - name[0], name[1], name[2], name[3], - name[4], name[5], name[6], name[7], - name[8], name[9], name[10]); - } - - int axisCount = 0, buttonCount = 0, hatCount = 0; - - for (int code = BTN_MISC; code < KEY_CNT; code++) - { - if (!isBitSet(code, keyBits)) - continue; - - linjs.keyMap[code - BTN_MISC] = buttonCount; - buttonCount++; - } - - for (int code = 0; code < ABS_CNT; code++) - { - linjs.absMap[code] = -1; - if (!isBitSet(code, absBits)) - continue; - - if (code >= ABS_HAT0X && code <= ABS_HAT3Y) - { - linjs.absMap[code] = hatCount; - hatCount++; - // Skip the Y axis - code++; - } - else - { - if (ioctl(linjs.fd, EVIOCGABS(code), &linjs.absInfo[code]) < 0) - continue; - - linjs.absMap[code] = axisCount; - axisCount++; - } - } - - _GLFWjoystick* js = - _glfwAllocJoystick(name, guid, axisCount, buttonCount, hatCount); - if (!js) - { - close(linjs.fd); - return GLFW_FALSE; - } - - strncpy(linjs.path, path, sizeof(linjs.path) - 1); - memcpy(&js->linjs, &linjs, sizeof(linjs)); - - pollAbsState(js); - - _glfwInputJoystick(js, GLFW_CONNECTED); - return GLFW_TRUE; -} - -#undef isBitSet - -// Frees all resources associated with the specified joystick -// -static void closeJoystick(_GLFWjoystick* js) -{ - close(js->linjs.fd); - _glfwFreeJoystick(js); - _glfwInputJoystick(js, GLFW_DISCONNECTED); -} - -// Lexically compare joysticks by name; used by qsort -// -static int compareJoysticks(const void* fp, const void* sp) -{ - const _GLFWjoystick* fj = fp; - const _GLFWjoystick* sj = sp; - return strcmp(fj->linjs.path, sj->linjs.path); -} - - -////////////////////////////////////////////////////////////////////////// -////// GLFW internal API ////// -////////////////////////////////////////////////////////////////////////// - -// Initialize joystick interface -// -GLFWbool _glfwInitJoysticksLinux(void) -{ - const char* dirname = "/dev/input"; - - _glfw.linjs.inotify = inotify_init1(IN_NONBLOCK | IN_CLOEXEC); - if (_glfw.linjs.inotify > 0) - { - // HACK: Register for IN_ATTRIB to get notified when udev is done - // This works well in practice but the true way is libudev - - _glfw.linjs.watch = inotify_add_watch(_glfw.linjs.inotify, - dirname, - IN_CREATE | IN_ATTRIB | IN_DELETE); - } - - // Continue without device connection notifications if inotify fails - - if (regcomp(&_glfw.linjs.regex, "^event[0-9]\\+$", 0) != 0) - { - _glfwInputError(GLFW_PLATFORM_ERROR, "Linux: Failed to compile regex"); - return GLFW_FALSE; - } - - int count = 0; - - DIR* dir = opendir(dirname); - if (dir) - { - struct dirent* entry; - - while ((entry = readdir(dir))) - { - regmatch_t match; - - if (regexec(&_glfw.linjs.regex, entry->d_name, 1, &match, 0) != 0) - continue; - - char path[PATH_MAX]; - - snprintf(path, sizeof(path), "%s/%s", dirname, entry->d_name); - - if (openJoystickDevice(path)) - count++; - } - - closedir(dir); - } - - // Continue with no joysticks if enumeration fails - - qsort(_glfw.joysticks, count, sizeof(_GLFWjoystick), compareJoysticks); - return GLFW_TRUE; -} - -// Close all opened joystick handles -// -void _glfwTerminateJoysticksLinux(void) -{ - int jid; - - for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++) - { - _GLFWjoystick* js = _glfw.joysticks + jid; - if (js->present) - closeJoystick(js); - } - - regfree(&_glfw.linjs.regex); - - if (_glfw.linjs.inotify > 0) - { - if (_glfw.linjs.watch > 0) - inotify_rm_watch(_glfw.linjs.inotify, _glfw.linjs.watch); - - close(_glfw.linjs.inotify); - } -} - -void _glfwDetectJoystickConnectionLinux(void) -{ - if (_glfw.linjs.inotify <= 0) - return; - - ssize_t offset = 0; - char buffer[16384]; - const ssize_t size = read(_glfw.linjs.inotify, buffer, sizeof(buffer)); - - while (size > offset) - { - regmatch_t match; - const struct inotify_event* e = (struct inotify_event*) (buffer + offset); - - offset += sizeof(struct inotify_event) + e->len; - - if (regexec(&_glfw.linjs.regex, e->name, 1, &match, 0) != 0) - continue; - - char path[PATH_MAX]; - snprintf(path, sizeof(path), "/dev/input/%s", e->name); - - if (e->mask & (IN_CREATE | IN_ATTRIB)) - openJoystickDevice(path); - else if (e->mask & IN_DELETE) - { - for (int jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++) - { - if (strcmp(_glfw.joysticks[jid].linjs.path, path) == 0) - { - closeJoystick(_glfw.joysticks + jid); - break; - } - } - } - } -} - - -////////////////////////////////////////////////////////////////////////// -////// GLFW platform API ////// -////////////////////////////////////////////////////////////////////////// - -int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode) -{ - // Read all queued events (non-blocking) - for (;;) - { - struct input_event e; - - errno = 0; - if (read(js->linjs.fd, &e, sizeof(e)) < 0) - { - // Reset the joystick slot if the device was disconnected - if (errno == ENODEV) - closeJoystick(js); - - break; - } - - if (e.type == EV_SYN) - { - if (e.code == SYN_DROPPED) - _glfw.linjs.dropped = GLFW_TRUE; - else if (e.code == SYN_REPORT) - { - _glfw.linjs.dropped = GLFW_FALSE; - pollAbsState(js); - } - } - - if (_glfw.linjs.dropped) - continue; - - if (e.type == EV_KEY) - handleKeyEvent(js, e.code, e.value); - else if (e.type == EV_ABS) - handleAbsEvent(js, e.code, e.value); - } - - return js->present; -} - -void _glfwPlatformUpdateGamepadGUID(char* guid) -{ -} - |