diff options
Diffstat (limited to 'raylib/src/platforms/rcore_drm.c')
| -rw-r--r-- | raylib/src/platforms/rcore_drm.c | 2120 |
1 files changed, 2120 insertions, 0 deletions
diff --git a/raylib/src/platforms/rcore_drm.c b/raylib/src/platforms/rcore_drm.c new file mode 100644 index 0000000..bdfc9e0 --- /dev/null +++ b/raylib/src/platforms/rcore_drm.c @@ -0,0 +1,2120 @@ +/********************************************************************************************** +* +* rcore_drm - Functions to manage window, graphics device and inputs +* +* PLATFORM: DRM +* - Raspberry Pi 0-5 (DRM/KMS) +* - Linux DRM subsystem (KMS mode) +* +* LIMITATIONS: +* - Most of the window/monitor functions are not implemented (not required) +* +* POSSIBLE IMPROVEMENTS: +* - Improvement 01 +* - Improvement 02 +* +* ADDITIONAL NOTES: +* - TRACELOG() function is located in raylib [utils] module +* +* CONFIGURATION: +* #define SUPPORT_SSH_KEYBOARD_RPI (Raspberry Pi only) +* Reconfigure standard input to receive key inputs, works with SSH connection. +* WARNING: Reconfiguring standard input could lead to undesired effects, like breaking other +* running processes orblocking the device if not restored properly. Use with care. +* +* DEPENDENCIES: +* - DRM and GLM: System libraries for display initialization and configuration +* - gestures: Gestures system for touch-ready devices (or simulated from mouse inputs) +* +* +* LICENSE: zlib/libpng +* +* Copyright (c) 2013-2023 Ramon Santamaria (@raysan5) and contributors +* +* 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 <fcntl.h> // POSIX file control definitions - open(), creat(), fcntl() +#include <unistd.h> // POSIX standard function definitions - read(), close(), STDIN_FILENO +#include <termios.h> // POSIX terminal control definitions - tcgetattr(), tcsetattr() +#include <pthread.h> // POSIX threads management (inputs reading) +#include <dirent.h> // POSIX directory browsing + +#include <sys/ioctl.h> // Required for: ioctl() - UNIX System call for device-specific input/output operations +#include <linux/kd.h> // Linux: KDSKBMODE, K_MEDIUMRAM constants definition +#include <linux/input.h> // Linux: Keycodes constants definition (KEY_A, ...) +#include <linux/joystick.h> // Linux: Joystick support library + +#include <gbm.h> // Generic Buffer Management (native platform for EGL on DRM) +#include <xf86drm.h> // Direct Rendering Manager user-level library interface +#include <xf86drmMode.h> // Direct Rendering Manager mode setting (KMS) interface + +#include "EGL/egl.h" // Native platform windowing system interface +#include "EGL/eglext.h" // EGL extensions + +//---------------------------------------------------------------------------------- +// Defines and Macros +//---------------------------------------------------------------------------------- +#define USE_LAST_TOUCH_DEVICE // When multiple touchscreens are connected, only use the one with the highest event<N> number + +#define DEFAULT_GAMEPAD_DEV "/dev/input/js" // Gamepad input (base dev for all gamepads: js0, js1, ...) +#define DEFAULT_EVDEV_PATH "/dev/input/" // Path to the linux input events + +//---------------------------------------------------------------------------------- +// Types and Structures Definition +//---------------------------------------------------------------------------------- + +typedef struct { + pthread_t threadId; // Event reading thread id + + int fd; // File descriptor to the device it is assigned to + int eventNum; // Number of 'event<N>' device + Rectangle absRange; // Range of values for absolute pointing devices (touchscreens) + int touchSlot; // Hold the touch slot number of the currently being sent multitouch block + bool isMouse; // True if device supports relative X Y movements + bool isTouch; // True if device supports absolute X Y movements and has BTN_TOUCH + bool isMultitouch; // True if device supports multiple absolute movevents and has BTN_TOUCH + bool isKeyboard; // True if device has letter keycodes + bool isGamepad; // True if device has gamepad buttons +} InputEventWorker; + +typedef struct { + // Display data + int fd; // File descriptor for /dev/dri/... + drmModeConnector *connector; // Direct Rendering Manager (DRM) mode connector + drmModeCrtc *crtc; // CRT Controller + int modeIndex; // Index of the used mode of connector->modes + struct gbm_device *gbmDevice; // GBM device + struct gbm_surface *gbmSurface; // GBM surface + struct gbm_bo *prevBO; // Previous GBM buffer object (during frame swapping) + uint32_t prevFB; // Previous GBM framebufer (during frame swapping) + + EGLDisplay device; // Native display device (physical screen connection) + EGLSurface surface; // Surface to draw on, framebuffers (connected to context) + EGLContext context; // Graphic context, mode in which drawing can be done + EGLConfig config; // Graphic config + + // Input data + InputEventWorker eventWorker[10]; // List of worker threads for every monitored "/dev/input/event<N>" + + // Keyboard data + int defaultKeyboardMode; // Default keyboard mode + bool eventKeyboardMode; // Keyboard in event mode + int defaultFileFlags; // Default IO file flags + struct termios defaultSettings; // Default keyboard settings + int keyboardFd; // File descriptor for the evdev keyboard + + // Mouse data + Vector2 eventWheelMove; // Registers the event mouse wheel variation + // NOTE: currentButtonState[] can't be written directly due to multithreading, app could miss the update + char currentButtonStateEvdev[MAX_MOUSE_BUTTONS]; // Holds the new mouse state for the next polling event to grab + bool cursorRelative; // Relative cursor mode + int mouseFd; // File descriptor for the evdev mouse/touch/gestures + Rectangle absRange; // Range of values for absolute pointing devices (touchscreens) + int touchSlot; // Hold the touch slot number of the currently being sent multitouch block + + // Gamepad data + pthread_t gamepadThreadId; // Gamepad reading thread id + int gamepadStreamFd[MAX_GAMEPADS]; // Gamepad device file descriptor + +} PlatformData; + +//---------------------------------------------------------------------------------- +// Global Variables Definition +//---------------------------------------------------------------------------------- +extern CoreData CORE; // Global CORE state context + +static PlatformData platform = { 0 }; // Platform specific data + +//---------------------------------------------------------------------------------- +// Local Variables Definition +//---------------------------------------------------------------------------------- +// Scancode to keycode mapping for US keyboards +// TODO: Replace this with a keymap from the X11 to get the correct regional map for the keyboard: +// Currently non US keyboards will have the wrong mapping for some keys +static const int keymapUS[] = { + 0, 256, 49, 50, 51, 52, 53, 54, 55, 56, 57, 48, 45, 61, 259, 258, 81, 87, 69, 82, 84, + 89, 85, 73, 79, 80, 91, 93, 257, 341, 65, 83, 68, 70, 71, 72, 74, 75, 76, 59, 39, 96, + 340, 92, 90, 88, 67, 86, 66, 78, 77, 44, 46, 47, 344, 332, 342, 32, 280, 290, 291, + 292, 293, 294, 295, 296, 297, 298, 299, 282, 281, 327, 328, 329, 333, 324, 325, + 326, 334, 321, 322, 323, 320, 330, 0, 85, 86, 300, 301, 89, 90, 91, 92, 93, 94, 95, + 335, 345, 331, 283, 346, 101, 268, 265, 266, 263, 262, 269, 264, 267, 260, 261, + 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 347, 127, + 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, + 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, + 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, + 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, + 192, 193, 194, 0, 0, 0, 0, 0, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, + 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, + 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, + 243, 244, 245, 246, 247, 248, 0, 0, 0, 0, 0, 0, 0 +}; + +// NOTE: The complete evdev EV_KEY list can be found at /usr/include/linux/input-event-codes.h +// TODO: Complete the LUT with all unicode decimal values +static const int EvkeyToUnicodeLUT[] = { + 0, 27, 49, 50, 51, 52, 53, 54, 55, 56, 57, 48, 45, 61, 8, 0, 113, 119, 101, 114, + 116, 121, 117, 105, 111, 112, 0, 0, 13, 0, 97, 115, 100, 102, 103, 104, 106, 107, 108, 59, + 39, 96, 0, 92, 122, 120, 99, 118, 98, 110, 109, 44, 46, 47, 0, 0, 0, 32 + // LUT currently incomplete, just mapped the most essential keys +}; + +//---------------------------------------------------------------------------------- +// Module Internal Functions Declaration +//---------------------------------------------------------------------------------- +int InitPlatform(void); // Initialize platform (graphics, inputs and more) +void ClosePlatform(void); // Close platform + +static void InitKeyboard(void); // Initialize raw keyboard system +static void RestoreKeyboard(void); // Restore keyboard system +#if defined(SUPPORT_SSH_KEYBOARD_RPI) +static void ProcessKeyboard(void); // Process keyboard events +#endif + +static void InitEvdevInput(void); // Initialize evdev inputs +static void ConfigureEvdevDevice(char *device); // Identifies a input device and configures it for use if appropriate +static void PollKeyboardEvents(void); // Process evdev keyboard events +static void *EventThread(void *arg); // Input device events reading thread + +static void InitGamepad(void); // Initialize raw gamepad input +static void *GamepadThread(void *arg); // Mouse reading thread + +static int FindMatchingConnectorMode(const drmModeConnector *connector, const drmModeModeInfo *mode); // Search matching DRM mode in connector's mode list +static int FindExactConnectorMode(const drmModeConnector *connector, uint width, uint height, uint fps, bool allowInterlaced); // Search exactly matching DRM connector mode in connector's list +static int FindNearestConnectorMode(const drmModeConnector *connector, uint width, uint height, uint fps, bool allowInterlaced); // Search the nearest matching DRM connector mode in connector's list + +//---------------------------------------------------------------------------------- +// Module Functions Declaration +//---------------------------------------------------------------------------------- +// NOTE: Functions declaration is provided by raylib.h + +//---------------------------------------------------------------------------------- +// Module Functions Definition: Window and Graphics Device +//---------------------------------------------------------------------------------- + +// Check if application should close +// NOTE: By default, if KEY_ESCAPE pressed +bool WindowShouldClose(void) +{ + if (CORE.Window.ready) return CORE.Window.shouldClose; + else return true; +} + +// Toggle fullscreen mode +void ToggleFullscreen(void) +{ + TRACELOG(LOG_WARNING, "ToggleFullscreen() not available on target platform"); +} + +// Toggle borderless windowed mode +void ToggleBorderlessWindowed(void) +{ + TRACELOG(LOG_WARNING, "ToggleBorderlessWindowed() not available on target platform"); +} + +// Set window state: maximized, if resizable +void MaximizeWindow(void) +{ + TRACELOG(LOG_WARNING, "MaximizeWindow() not available on target platform"); +} + +// Set window state: minimized +void MinimizeWindow(void) +{ + TRACELOG(LOG_WARNING, "MinimizeWindow() not available on target platform"); +} + +// Set window state: not minimized/maximized +void RestoreWindow(void) +{ + TRACELOG(LOG_WARNING, "RestoreWindow() not available on target platform"); +} + +// Set window configuration state using flags +void SetWindowState(unsigned int flags) +{ + TRACELOG(LOG_WARNING, "SetWindowState() not available on target platform"); +} + +// Clear window configuration state flags +void ClearWindowState(unsigned int flags) +{ + TRACELOG(LOG_WARNING, "ClearWindowState() not available on target platform"); +} + +// Set icon for window +void SetWindowIcon(Image image) +{ + TRACELOG(LOG_WARNING, "SetWindowIcon() not available on target platform"); +} + +// Set icon for window +void SetWindowIcons(Image *images, int count) +{ + TRACELOG(LOG_WARNING, "SetWindowIcons() not available on target platform"); +} + +// Set title for window +void SetWindowTitle(const char *title) +{ + CORE.Window.title = title; +} + +// Set window position on screen (windowed mode) +void SetWindowPosition(int x, int y) +{ + TRACELOG(LOG_WARNING, "SetWindowPosition() not available on target platform"); +} + +// Set monitor for the current window +void SetWindowMonitor(int monitor) +{ + TRACELOG(LOG_WARNING, "SetWindowMonitor() not available on target platform"); +} + +// Set window minimum dimensions (FLAG_WINDOW_RESIZABLE) +void SetWindowMinSize(int width, int height) +{ + CORE.Window.screenMin.width = width; + CORE.Window.screenMin.height = height; +} + +// Set window maximum dimensions (FLAG_WINDOW_RESIZABLE) +void SetWindowMaxSize(int width, int height) +{ + CORE.Window.screenMax.width = width; + CORE.Window.screenMax.height = height; +} + +// Set window dimensions +void SetWindowSize(int width, int height) +{ + TRACELOG(LOG_WARNING, "SetWindowSize() not available on target platform"); +} + +// Set window opacity, value opacity is between 0.0 and 1.0 +void SetWindowOpacity(float opacity) +{ + TRACELOG(LOG_WARNING, "SetWindowOpacity() not available on target platform"); +} + +// Set window focused +void SetWindowFocused(void) +{ + TRACELOG(LOG_WARNING, "SetWindowFocused() not available on target platform"); +} + +// Get native window handle +void *GetWindowHandle(void) +{ + TRACELOG(LOG_WARNING, "GetWindowHandle() not implemented on target platform"); + return NULL; +} + +// Get number of monitors +int GetMonitorCount(void) +{ + TRACELOG(LOG_WARNING, "GetMonitorCount() not implemented on target platform"); + return 1; +} + +// Get number of monitors +int GetCurrentMonitor(void) +{ + TRACELOG(LOG_WARNING, "GetCurrentMonitor() not implemented on target platform"); + return 0; +} + +// Get selected monitor position +Vector2 GetMonitorPosition(int monitor) +{ + TRACELOG(LOG_WARNING, "GetMonitorPosition() not implemented on target platform"); + return (Vector2){ 0, 0 }; +} + +// Get selected monitor width (currently used by monitor) +int GetMonitorWidth(int monitor) +{ + TRACELOG(LOG_WARNING, "GetMonitorWidth() not implemented on target platform"); + return 0; +} + +// Get selected monitor height (currently used by monitor) +int GetMonitorHeight(int monitor) +{ + TRACELOG(LOG_WARNING, "GetMonitorHeight() not implemented on target platform"); + return 0; +} + +// Get selected monitor physical width in millimetres +int GetMonitorPhysicalWidth(int monitor) +{ + TRACELOG(LOG_WARNING, "GetMonitorPhysicalWidth() not implemented on target platform"); + return 0; +} + +// Get selected monitor physical height in millimetres +int GetMonitorPhysicalHeight(int monitor) +{ + TRACELOG(LOG_WARNING, "GetMonitorPhysicalHeight() not implemented on target platform"); + return 0; +} + +// Get selected monitor refresh rate +int GetMonitorRefreshRate(int monitor) +{ + int refresh = 0; + + if ((platform.connector) && (platform.modeIndex >= 0)) + { + refresh = platform.connector->modes[platform.modeIndex].vrefresh; + } + + return refresh; +} + +// Get the human-readable, UTF-8 encoded name of the selected monitor +const char *GetMonitorName(int monitor) +{ + TRACELOG(LOG_WARNING, "GetMonitorName() not implemented on target platform"); + return ""; +} + +// Get window position XY on monitor +Vector2 GetWindowPosition(void) +{ + return (Vector2){ 0, 0 }; +} + +// Get window scale DPI factor for current monitor +Vector2 GetWindowScaleDPI(void) +{ + return (Vector2){ 1.0f, 1.0f }; +} + +// Set clipboard text content +void SetClipboardText(const char *text) +{ + TRACELOG(LOG_WARNING, "SetClipboardText() not implemented on target platform"); +} + +// Get clipboard text content +// NOTE: returned string is allocated and freed by GLFW +const char *GetClipboardText(void) +{ + TRACELOG(LOG_WARNING, "GetClipboardText() not implemented on target platform"); + return NULL; +} + +// Show mouse cursor +void ShowCursor(void) +{ + CORE.Input.Mouse.cursorHidden = false; +} + +// Hides mouse cursor +void HideCursor(void) +{ + CORE.Input.Mouse.cursorHidden = true; +} + +// Enables cursor (unlock cursor) +void EnableCursor(void) +{ + // Set cursor position in the middle + SetMousePosition(CORE.Window.screen.width/2, CORE.Window.screen.height/2); + + platform.cursorRelative = false; + CORE.Input.Mouse.cursorHidden = false; +} + +// Disables cursor (lock cursor) +void DisableCursor(void) +{ + // Set cursor position in the middle + SetMousePosition(0, 0); + + platform.cursorRelative = true; + CORE.Input.Mouse.cursorHidden = true; +} + +// Swap back buffer with front buffer (screen drawing) +void SwapScreenBuffer(void) +{ + eglSwapBuffers(platform.device, platform.surface); + + if (!platform.gbmSurface || (-1 == platform.fd) || !platform.connector || !platform.crtc) TRACELOG(LOG_ERROR, "DISPLAY: DRM initialization failed to swap"); + + struct gbm_bo *bo = gbm_surface_lock_front_buffer(platform.gbmSurface); + if (!bo) TRACELOG(LOG_ERROR, "DISPLAY: Failed GBM to lock front buffer"); + + uint32_t fb = 0; + int result = drmModeAddFB(platform.fd, platform.connector->modes[platform.modeIndex].hdisplay, platform.connector->modes[platform.modeIndex].vdisplay, 24, 32, gbm_bo_get_stride(bo), gbm_bo_get_handle(bo).u32, &fb); + if (result != 0) TRACELOG(LOG_ERROR, "DISPLAY: drmModeAddFB() failed with result: %d", result); + + result = drmModeSetCrtc(platform.fd, platform.crtc->crtc_id, fb, 0, 0, &platform.connector->connector_id, 1, &platform.connector->modes[platform.modeIndex]); + if (result != 0) TRACELOG(LOG_ERROR, "DISPLAY: drmModeSetCrtc() failed with result: %d", result); + + if (platform.prevFB) + { + result = drmModeRmFB(platform.fd, platform.prevFB); + if (result != 0) TRACELOG(LOG_ERROR, "DISPLAY: drmModeRmFB() failed with result: %d", result); + } + + platform.prevFB = fb; + + if (platform.prevBO) gbm_surface_release_buffer(platform.gbmSurface, platform.prevBO); + + platform.prevBO = bo; +} + +//---------------------------------------------------------------------------------- +// Module Functions Definition: Misc +//---------------------------------------------------------------------------------- + +// Get elapsed time measure in seconds since InitTimer() +double GetTime(void) +{ + double time = 0.0; + struct timespec ts = { 0 }; + clock_gettime(CLOCK_MONOTONIC, &ts); + unsigned long long int nanoSeconds = (unsigned long long int)ts.tv_sec*1000000000LLU + (unsigned long long int)ts.tv_nsec; + + time = (double)(nanoSeconds - CORE.Time.base)*1e-9; // Elapsed time since InitTimer() + + return time; +} + +// Open URL with default system browser (if available) +// NOTE: This function is only safe to use if you control the URL given. +// A user could craft a malicious string performing another action. +// Only call this function yourself not with user input or make sure to check the string yourself. +// Ref: https://github.com/raysan5/raylib/issues/686 +void OpenURL(const char *url) +{ + TRACELOG(LOG_WARNING, "OpenURL() not implemented on target platform"); +} + +//---------------------------------------------------------------------------------- +// Module Functions Definition: Inputs +//---------------------------------------------------------------------------------- + +// Set internal gamepad mappings +int SetGamepadMappings(const char *mappings) +{ + TRACELOG(LOG_WARNING, "SetGamepadMappings() not implemented on target platform"); + return 0; +} + +// Set mouse position XY +void SetMousePosition(int x, int y) +{ + CORE.Input.Mouse.currentPosition = (Vector2){ (float)x, (float)y }; + CORE.Input.Mouse.previousPosition = CORE.Input.Mouse.currentPosition; +} + +// Set mouse cursor +void SetMouseCursor(int cursor) +{ + TRACELOG(LOG_WARNING, "SetMouseCursor() not implemented on target platform"); +} + +// Register all input events +void PollInputEvents(void) +{ +#if defined(SUPPORT_GESTURES_SYSTEM) + // NOTE: Gestures update must be called every frame to reset gestures correctly + // because ProcessGestureEvent() is just called on an event, not every frame + UpdateGestures(); +#endif + + // Reset keys/chars pressed registered + CORE.Input.Keyboard.keyPressedQueueCount = 0; + CORE.Input.Keyboard.charPressedQueueCount = 0; + + // Reset key repeats + for (int i = 0; i < MAX_KEYBOARD_KEYS; i++) CORE.Input.Keyboard.keyRepeatInFrame[i] = 0; + + // Reset last gamepad button/axis registered state + CORE.Input.Gamepad.lastButtonPressed = 0; // GAMEPAD_BUTTON_UNKNOWN + //CORE.Input.Gamepad.axisCount = 0; + + // Register previous keys states + for (int i = 0; i < MAX_KEYBOARD_KEYS; i++) + { + CORE.Input.Keyboard.previousKeyState[i] = CORE.Input.Keyboard.currentKeyState[i]; + CORE.Input.Keyboard.keyRepeatInFrame[i] = 0; + } + + PollKeyboardEvents(); + + // Register previous mouse position + if (platform.cursorRelative) CORE.Input.Mouse.currentPosition = (Vector2){ 0.0f, 0.0f }; + else CORE.Input.Mouse.previousPosition = CORE.Input.Mouse.currentPosition; + + // Register previous mouse states + CORE.Input.Mouse.previousWheelMove = CORE.Input.Mouse.currentWheelMove; + CORE.Input.Mouse.currentWheelMove = platform.eventWheelMove; + platform.eventWheelMove = (Vector2){ 0.0f, 0.0f }; + for (int i = 0; i < MAX_MOUSE_BUTTONS; i++) + { + CORE.Input.Mouse.previousButtonState[i] = CORE.Input.Mouse.currentButtonState[i]; + CORE.Input.Mouse.currentButtonState[i] = platform.currentButtonStateEvdev[i]; + } + + // Register gamepads buttons events + for (int i = 0; i < MAX_GAMEPADS; i++) + { + if (CORE.Input.Gamepad.ready[i]) + { + // Register previous gamepad states + for (int k = 0; k < MAX_GAMEPAD_BUTTONS; k++) CORE.Input.Gamepad.previousButtonState[i][k] = CORE.Input.Gamepad.currentButtonState[i][k]; + } + } + + // Register previous touch states + for (int i = 0; i < MAX_TOUCH_POINTS; i++) CORE.Input.Touch.previousTouchState[i] = CORE.Input.Touch.currentTouchState[i]; + + // Reset touch positions + //for (int i = 0; i < MAX_TOUCH_POINTS; i++) CORE.Input.Touch.position[i] = (Vector2){ 0, 0 }; + + // Map touch position to mouse position for convenience + CORE.Input.Touch.position[0] = CORE.Input.Mouse.currentPosition; + +#if defined(SUPPORT_SSH_KEYBOARD_RPI) + // NOTE: Keyboard reading could be done using input_event(s) or just read from stdin, both methods are used here. + // stdin reading is still used for legacy purposes, it allows keyboard input trough SSH console + + if (!platform.eventKeyboardMode) ProcessKeyboard(); + + // NOTE: Mouse input events polling is done asynchronously in another pthread - EventThread() + // NOTE: Gamepad (Joystick) input events polling is done asynchonously in another pthread - GamepadThread() +#endif + + // Handle the mouse/touch/gestures events: + // NOTE: Replaces the EventThread handling that is now commented. + { + int fd = platform.mouseFd; + if (fd == -1) return; + + struct input_event event = { 0 }; + + int touchAction = -1; // 0-TOUCH_ACTION_UP, 1-TOUCH_ACTION_DOWN, 2-TOUCH_ACTION_MOVE + bool gestureUpdate = false; // Flag to note gestures require to update + + // Try to read data from the mouse/touch/gesture and only continue if successful + while (read(fd, &event, sizeof(event)) == (int)sizeof(event)) + { + // Relative movement parsing + if (event.type == EV_REL) + { + if (event.code == REL_X) + { + if (platform.cursorRelative) + { + CORE.Input.Mouse.currentPosition.x = event.value; + CORE.Input.Mouse.previousPosition.x = 0.0f; + } + else CORE.Input.Mouse.currentPosition.x += event.value; + CORE.Input.Touch.position[0].x = CORE.Input.Mouse.currentPosition.x; + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + if (event.code == REL_Y) + { + if (platform.cursorRelative) + { + CORE.Input.Mouse.currentPosition.y = event.value; + CORE.Input.Mouse.previousPosition.y = 0.0f; + } + else CORE.Input.Mouse.currentPosition.y += event.value; + CORE.Input.Touch.position[0].y = CORE.Input.Mouse.currentPosition.y; + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + if (event.code == REL_WHEEL) platform.eventWheelMove.y += event.value; + } + + // Absolute movement parsing + if (event.type == EV_ABS) + { + // Basic movement + if (event.code == ABS_X) + { + CORE.Input.Mouse.currentPosition.x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width; // Scale according to absRange + CORE.Input.Touch.position[0].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width; // Scale according to absRange + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + if (event.code == ABS_Y) + { + CORE.Input.Mouse.currentPosition.y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height; // Scale according to absRange + CORE.Input.Touch.position[0].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height; // Scale according to absRange + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + // Multitouch movement + if (event.code == ABS_MT_SLOT) platform.touchSlot = event.value; // Remember the slot number for the folowing events + + if (event.code == ABS_MT_POSITION_X) + { + if (platform.touchSlot < MAX_TOUCH_POINTS) CORE.Input.Touch.position[platform.touchSlot].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width; // Scale according to absRange + } + + if (event.code == ABS_MT_POSITION_Y) + { + if (platform.touchSlot < MAX_TOUCH_POINTS) CORE.Input.Touch.position[platform.touchSlot].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height; // Scale according to absRange + } + + if (event.code == ABS_MT_TRACKING_ID) + { + if ((event.value < 0) && (platform.touchSlot < MAX_TOUCH_POINTS)) + { + // Touch has ended for this point + CORE.Input.Touch.position[platform.touchSlot].x = -1; + CORE.Input.Touch.position[platform.touchSlot].y = -1; + } + } + + // Touchscreen tap + if (event.code == ABS_PRESSURE) + { + int previousMouseLeftButtonState = platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT]; + + if (!event.value && previousMouseLeftButtonState) + { + platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 0; + + touchAction = 0; // TOUCH_ACTION_UP + gestureUpdate = true; + } + + if (event.value && !previousMouseLeftButtonState) + { + platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 1; + + touchAction = 1; // TOUCH_ACTION_DOWN + gestureUpdate = true; + } + } + + } + + // Button parsing + if (event.type == EV_KEY) + { + // Mouse button parsing + if ((event.code == BTN_TOUCH) || (event.code == BTN_LEFT)) + { + platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = event.value; + + if (event.value > 0) touchAction = 1; // TOUCH_ACTION_DOWN + else touchAction = 0; // TOUCH_ACTION_UP + gestureUpdate = true; + } + + if (event.code == BTN_RIGHT) platform.currentButtonStateEvdev[MOUSE_BUTTON_RIGHT] = event.value; + if (event.code == BTN_MIDDLE) platform.currentButtonStateEvdev[MOUSE_BUTTON_MIDDLE] = event.value; + if (event.code == BTN_SIDE) platform.currentButtonStateEvdev[MOUSE_BUTTON_SIDE] = event.value; + if (event.code == BTN_EXTRA) platform.currentButtonStateEvdev[MOUSE_BUTTON_EXTRA] = event.value; + if (event.code == BTN_FORWARD) platform.currentButtonStateEvdev[MOUSE_BUTTON_FORWARD] = event.value; + if (event.code == BTN_BACK) platform.currentButtonStateEvdev[MOUSE_BUTTON_BACK] = event.value; + } + + // Screen confinement + if (!CORE.Input.Mouse.cursorHidden) + { + if (CORE.Input.Mouse.currentPosition.x < 0) CORE.Input.Mouse.currentPosition.x = 0; + if (CORE.Input.Mouse.currentPosition.x > CORE.Window.screen.width/CORE.Input.Mouse.scale.x) CORE.Input.Mouse.currentPosition.x = CORE.Window.screen.width/CORE.Input.Mouse.scale.x; + + if (CORE.Input.Mouse.currentPosition.y < 0) CORE.Input.Mouse.currentPosition.y = 0; + if (CORE.Input.Mouse.currentPosition.y > CORE.Window.screen.height/CORE.Input.Mouse.scale.y) CORE.Input.Mouse.currentPosition.y = CORE.Window.screen.height/CORE.Input.Mouse.scale.y; + } + + // Update touch point count + CORE.Input.Touch.pointCount = 0; + for (int i = 0; i < MAX_TOUCH_POINTS; i++) + { + if (CORE.Input.Touch.position[i].x >= 0) CORE.Input.Touch.pointCount++; + } + +#if defined(SUPPORT_GESTURES_SYSTEM) + if (gestureUpdate) + { + GestureEvent gestureEvent = { 0 }; + + gestureEvent.touchAction = touchAction; + gestureEvent.pointCount = CORE.Input.Touch.pointCount; + + for (int i = 0; i < MAX_TOUCH_POINTS; i++) + { + gestureEvent.pointId[i] = i; + gestureEvent.position[i] = CORE.Input.Touch.position[i]; + } + + ProcessGestureEvent(gestureEvent); + + gestureUpdate = false; + } +#endif + } + } +} + +//---------------------------------------------------------------------------------- +// Module Internal Functions Definition +//---------------------------------------------------------------------------------- + +// Initialize platform: graphics, inputs and more +int InitPlatform(void) +{ + platform.fd = -1; + platform.connector = NULL; + platform.modeIndex = -1; + platform.crtc = NULL; + platform.gbmDevice = NULL; + platform.gbmSurface = NULL; + platform.prevBO = NULL; + platform.prevFB = 0; + + // Initialize graphic device: display/window and graphic context + //---------------------------------------------------------------------------- + CORE.Window.fullscreen = true; + CORE.Window.flags |= FLAG_FULLSCREEN_MODE; + +#if defined(DEFAULT_GRAPHIC_DEVICE_DRM) + platform.fd = open(DEFAULT_GRAPHIC_DEVICE_DRM, O_RDWR); +#else + TRACELOG(LOG_INFO, "DISPLAY: No graphic card set, trying platform-gpu-card"); + platform.fd = open("/dev/dri/by-path/platform-gpu-card", O_RDWR); // VideoCore VI (Raspberry Pi 4) + + if ((platform.fd == -1) || (drmModeGetResources(platform.fd) == NULL)) + { + TRACELOG(LOG_INFO, "DISPLAY: Failed to open platform-gpu-card, trying card1"); + platform.fd = open("/dev/dri/card1", O_RDWR); // Other Embedded + } + + if ((platform.fd == -1) || (drmModeGetResources(platform.fd) == NULL)) + { + TRACELOG(LOG_INFO, "DISPLAY: Failed to open graphic card1, trying card0"); + platform.fd = open("/dev/dri/card0", O_RDWR); // VideoCore IV (Raspberry Pi 1-3) + } +#endif + + if (platform.fd == -1) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to open graphic card"); + return -1; + } + + drmModeRes *res = drmModeGetResources(platform.fd); + if (!res) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed get DRM resources"); + return -1; + } + + TRACELOG(LOG_TRACE, "DISPLAY: Connectors found: %i", res->count_connectors); + + for (size_t i = 0; i < res->count_connectors; i++) + { + TRACELOG(LOG_TRACE, "DISPLAY: Connector index %i", i); + + drmModeConnector *con = drmModeGetConnector(platform.fd, res->connectors[i]); + TRACELOG(LOG_TRACE, "DISPLAY: Connector modes detected: %i", con->count_modes); + + if ((con->connection == DRM_MODE_CONNECTED) && (con->encoder_id)) + { + TRACELOG(LOG_TRACE, "DISPLAY: DRM mode connected"); + platform.connector = con; + break; + } + else + { + TRACELOG(LOG_TRACE, "DISPLAY: DRM mode NOT connected (deleting)"); + drmModeFreeConnector(con); + } + } + + if (!platform.connector) + { + TRACELOG(LOG_WARNING, "DISPLAY: No suitable DRM connector found"); + drmModeFreeResources(res); + return -1; + } + + drmModeEncoder *enc = drmModeGetEncoder(platform.fd, platform.connector->encoder_id); + if (!enc) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to get DRM mode encoder"); + drmModeFreeResources(res); + return -1; + } + + platform.crtc = drmModeGetCrtc(platform.fd, enc->crtc_id); + if (!platform.crtc) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to get DRM mode crtc"); + drmModeFreeEncoder(enc); + drmModeFreeResources(res); + return -1; + } + + // If InitWindow should use the current mode find it in the connector's mode list + if ((CORE.Window.screen.width <= 0) || (CORE.Window.screen.height <= 0)) + { + TRACELOG(LOG_TRACE, "DISPLAY: Selecting DRM connector mode for current used mode..."); + + platform.modeIndex = FindMatchingConnectorMode(platform.connector, &platform.crtc->mode); + + if (platform.modeIndex < 0) + { + TRACELOG(LOG_WARNING, "DISPLAY: No matching DRM connector mode found"); + drmModeFreeEncoder(enc); + drmModeFreeResources(res); + return -1; + } + + CORE.Window.screen.width = CORE.Window.display.width; + CORE.Window.screen.height = CORE.Window.display.height; + } + + const bool allowInterlaced = CORE.Window.flags & FLAG_INTERLACED_HINT; + const int fps = (CORE.Time.target > 0)? (1.0/CORE.Time.target) : 60; + + // Try to find an exact matching mode + platform.modeIndex = FindExactConnectorMode(platform.connector, CORE.Window.screen.width, CORE.Window.screen.height, fps, allowInterlaced); + + // If nothing found, try to find a nearly matching mode + if (platform.modeIndex < 0) platform.modeIndex = FindNearestConnectorMode(platform.connector, CORE.Window.screen.width, CORE.Window.screen.height, fps, allowInterlaced); + + // If nothing found, try to find an exactly matching mode including interlaced + if (platform.modeIndex < 0) platform.modeIndex = FindExactConnectorMode(platform.connector, CORE.Window.screen.width, CORE.Window.screen.height, fps, true); + + // If nothing found, try to find a nearly matching mode including interlaced + if (platform.modeIndex < 0) platform.modeIndex = FindNearestConnectorMode(platform.connector, CORE.Window.screen.width, CORE.Window.screen.height, fps, true); + + // If nothing found, there is no suitable mode + if (platform.modeIndex < 0) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to find a suitable DRM connector mode"); + drmModeFreeEncoder(enc); + drmModeFreeResources(res); + return -1; + } + + CORE.Window.display.width = platform.connector->modes[platform.modeIndex].hdisplay; + CORE.Window.display.height = platform.connector->modes[platform.modeIndex].vdisplay; + + TRACELOG(LOG_INFO, "DISPLAY: Selected DRM connector mode %s (%ux%u%c@%u)", platform.connector->modes[platform.modeIndex].name, + platform.connector->modes[platform.modeIndex].hdisplay, platform.connector->modes[platform.modeIndex].vdisplay, + (platform.connector->modes[platform.modeIndex].flags & DRM_MODE_FLAG_INTERLACE)? 'i' : 'p', + platform.connector->modes[platform.modeIndex].vrefresh); + + // Use the width and height of the surface for render + CORE.Window.render.width = CORE.Window.screen.width; + CORE.Window.render.height = CORE.Window.screen.height; + + drmModeFreeEncoder(enc); + enc = NULL; + + drmModeFreeResources(res); + res = NULL; + + platform.gbmDevice = gbm_create_device(platform.fd); + if (!platform.gbmDevice) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to create GBM device"); + return -1; + } + + platform.gbmSurface = gbm_surface_create(platform.gbmDevice, platform.connector->modes[platform.modeIndex].hdisplay, + platform.connector->modes[platform.modeIndex].vdisplay, GBM_FORMAT_ARGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING); + if (!platform.gbmSurface) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to create GBM surface"); + return -1; + } + + EGLint samples = 0; + EGLint sampleBuffer = 0; + if (CORE.Window.flags & FLAG_MSAA_4X_HINT) + { + samples = 4; + sampleBuffer = 1; + TRACELOG(LOG_INFO, "DISPLAY: Trying to enable MSAA x4"); + } + + const EGLint framebufferAttribs[] = + { + EGL_RENDERABLE_TYPE, (rlGetVersion() == RL_OPENGL_ES_30)? EGL_OPENGL_ES3_BIT : EGL_OPENGL_ES2_BIT, // Type of context support + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, // Don't use it on Android! + EGL_RED_SIZE, 8, // RED color bit depth (alternative: 5) + EGL_GREEN_SIZE, 8, // GREEN color bit depth (alternative: 6) + EGL_BLUE_SIZE, 8, // BLUE color bit depth (alternative: 5) + EGL_ALPHA_SIZE, 8, // ALPHA bit depth (required for transparent framebuffer) + //EGL_TRANSPARENT_TYPE, EGL_NONE, // Request transparent framebuffer (EGL_TRANSPARENT_RGB does not work on RPI) + EGL_DEPTH_SIZE, 16, // Depth buffer size (Required to use Depth testing!) + //EGL_STENCIL_SIZE, 8, // Stencil buffer size + EGL_SAMPLE_BUFFERS, sampleBuffer, // Activate MSAA + EGL_SAMPLES, samples, // 4x Antialiasing if activated (Free on MALI GPUs) + EGL_NONE + }; + + const EGLint contextAttribs[] = { + EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_NONE + }; + + EGLint numConfigs = 0; + + // Get an EGL device connection + platform.device = eglGetDisplay((EGLNativeDisplayType)platform.gbmDevice); + if (platform.device == EGL_NO_DISPLAY) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to initialize EGL device"); + return -1; + } + + // Initialize the EGL device connection + if (eglInitialize(platform.device, NULL, NULL) == EGL_FALSE) + { + // If all of the calls to eglInitialize returned EGL_FALSE then an error has occurred. + TRACELOG(LOG_WARNING, "DISPLAY: Failed to initialize EGL device"); + return -1; + } + + if (!eglChooseConfig(platform.device, NULL, NULL, 0, &numConfigs)) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to get EGL config count: 0x%x", eglGetError()); + return -1; + } + + TRACELOG(LOG_TRACE, "DISPLAY: EGL configs available: %d", numConfigs); + + EGLConfig *configs = RL_CALLOC(numConfigs, sizeof(*configs)); + if (!configs) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to get memory for EGL configs"); + return -1; + } + + EGLint matchingNumConfigs = 0; + if (!eglChooseConfig(platform.device, framebufferAttribs, configs, numConfigs, &matchingNumConfigs)) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to choose EGL config: 0x%x", eglGetError()); + free(configs); + return -1; + } + + TRACELOG(LOG_TRACE, "DISPLAY: EGL matching configs available: %d", matchingNumConfigs); + + // find the EGL config that matches the previously setup GBM format + int found = 0; + for (EGLint i = 0; i < matchingNumConfigs; ++i) + { + EGLint id = 0; + if (!eglGetConfigAttrib(platform.device, configs[i], EGL_NATIVE_VISUAL_ID, &id)) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to get EGL config attribute: 0x%x", eglGetError()); + continue; + } + + if (GBM_FORMAT_ARGB8888 == id) + { + TRACELOG(LOG_TRACE, "DISPLAY: Using EGL config: %d", i); + platform.config = configs[i]; + found = 1; + break; + } + } + + RL_FREE(configs); + + if (!found) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to find a suitable EGL config"); + return -1; + } + + // Set rendering API + eglBindAPI(EGL_OPENGL_ES_API); + + // Create an EGL rendering context + platform.context = eglCreateContext(platform.device, platform.config, EGL_NO_CONTEXT, contextAttribs); + if (platform.context == EGL_NO_CONTEXT) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to create EGL context"); + return -1; + } + + // Create an EGL window surface + platform.surface = eglCreateWindowSurface(platform.device, platform.config, (EGLNativeWindowType)platform.gbmSurface, NULL); + if (EGL_NO_SURFACE == platform.surface) + { + TRACELOG(LOG_WARNING, "DISPLAY: Failed to create EGL window surface: 0x%04x", eglGetError()); + return -1; + } + + // At this point we need to manage render size vs screen size + // NOTE: This function use and modify global module variables: + // -> CORE.Window.screen.width/CORE.Window.screen.height + // -> CORE.Window.render.width/CORE.Window.render.height + // -> CORE.Window.screenScale + SetupFramebuffer(CORE.Window.display.width, CORE.Window.display.height); + + // There must be at least one frame displayed before the buffers are swapped + //eglSwapInterval(platform.device, 1); + + EGLBoolean result = eglMakeCurrent(platform.device, platform.surface, platform.surface, platform.context); + + // Check surface and context activation + if (result != EGL_FALSE) + { + CORE.Window.ready = true; + + CORE.Window.render.width = CORE.Window.screen.width; + CORE.Window.render.height = CORE.Window.screen.height; + CORE.Window.currentFbo.width = CORE.Window.render.width; + CORE.Window.currentFbo.height = CORE.Window.render.height; + + TRACELOG(LOG_INFO, "DISPLAY: Device initialized successfully"); + TRACELOG(LOG_INFO, " > Display size: %i x %i", CORE.Window.display.width, CORE.Window.display.height); + TRACELOG(LOG_INFO, " > Screen size: %i x %i", CORE.Window.screen.width, CORE.Window.screen.height); + TRACELOG(LOG_INFO, " > Render size: %i x %i", CORE.Window.render.width, CORE.Window.render.height); + TRACELOG(LOG_INFO, " > Viewport offsets: %i, %i", CORE.Window.renderOffset.x, CORE.Window.renderOffset.y); + } + else + { + TRACELOG(LOG_FATAL, "PLATFORM: Failed to initialize graphics device"); + return -1; + } + + if ((CORE.Window.flags & FLAG_WINDOW_MINIMIZED) > 0) MinimizeWindow(); + + // If graphic device is no properly initialized, we end program + if (!CORE.Window.ready) { TRACELOG(LOG_FATAL, "PLATFORM: Failed to initialize graphic device"); return -1; } + else SetWindowPosition(GetMonitorWidth(GetCurrentMonitor()) / 2 - CORE.Window.screen.width / 2, GetMonitorHeight(GetCurrentMonitor()) / 2 - CORE.Window.screen.height / 2); + + // Set some default window flags + CORE.Window.flags &= ~FLAG_WINDOW_HIDDEN; // false + CORE.Window.flags &= ~FLAG_WINDOW_MINIMIZED; // false + CORE.Window.flags |= FLAG_WINDOW_MAXIMIZED; // true + CORE.Window.flags &= ~FLAG_WINDOW_UNFOCUSED; // false + + // Load OpenGL extensions + // NOTE: GL procedures address loader is required to load extensions + rlLoadExtensions(eglGetProcAddress); + //---------------------------------------------------------------------------- + + // Initialize timming system + //---------------------------------------------------------------------------- + // NOTE: timming system must be initialized before the input events system + InitTimer(); + //---------------------------------------------------------------------------- + + // Initialize input events system + //---------------------------------------------------------------------------- + InitEvdevInput(); // Evdev inputs initialization + InitGamepad(); // Gamepad init + InitKeyboard(); // Keyboard init (stdin) + //---------------------------------------------------------------------------- + + // Initialize storage system + //---------------------------------------------------------------------------- + CORE.Storage.basePath = GetWorkingDirectory(); + //---------------------------------------------------------------------------- + + TRACELOG(LOG_INFO, "PLATFORM: DRM: Initialized successfully"); + + return 0; +} + +// Close platform +void ClosePlatform(void) +{ + if (platform.prevFB) + { + drmModeRmFB(platform.fd, platform.prevFB); + platform.prevFB = 0; + } + + if (platform.prevBO) + { + gbm_surface_release_buffer(platform.gbmSurface, platform.prevBO); + platform.prevBO = NULL; + } + + if (platform.gbmSurface) + { + gbm_surface_destroy(platform.gbmSurface); + platform.gbmSurface = NULL; + } + + if (platform.gbmDevice) + { + gbm_device_destroy(platform.gbmDevice); + platform.gbmDevice = NULL; + } + + if (platform.crtc) + { + if (platform.connector) + { + drmModeSetCrtc(platform.fd, platform.crtc->crtc_id, platform.crtc->buffer_id, + platform.crtc->x, platform.crtc->y, &platform.connector->connector_id, 1, &platform.crtc->mode); + drmModeFreeConnector(platform.connector); + platform.connector = NULL; + } + + drmModeFreeCrtc(platform.crtc); + platform.crtc = NULL; + } + + if (platform.fd != -1) + { + close(platform.fd); + platform.fd = -1; + } + + // Close surface, context and display + if (platform.device != EGL_NO_DISPLAY) + { + if (platform.surface != EGL_NO_SURFACE) + { + eglDestroySurface(platform.device, platform.surface); + platform.surface = EGL_NO_SURFACE; + } + + if (platform.context != EGL_NO_CONTEXT) + { + eglDestroyContext(platform.device, platform.context); + platform.context = EGL_NO_CONTEXT; + } + + eglTerminate(platform.device); + platform.device = EGL_NO_DISPLAY; + } + + // Wait for mouse and gamepad threads to finish before closing + // NOTE: Those threads should already have finished at this point + // because they are controlled by CORE.Window.shouldClose variable + + CORE.Window.shouldClose = true; // Added to force threads to exit when the close window is called + + // Close the evdev keyboard + if (platform.keyboardFd != -1) + { + close(platform.keyboardFd); + platform.keyboardFd = -1; + } + + for (int i = 0; i < sizeof(platform.eventWorker)/sizeof(InputEventWorker); ++i) + { + if (platform.eventWorker[i].threadId) + { + pthread_join(platform.eventWorker[i].threadId, NULL); + } + } + + if (platform.gamepadThreadId) pthread_join(platform.gamepadThreadId, NULL); +} + +// Initialize Keyboard system (using standard input) +static void InitKeyboard(void) +{ + // NOTE: We read directly from Standard Input (stdin) - STDIN_FILENO file descriptor, + // Reading directly from stdin will give chars already key-mapped by kernel to ASCII or UNICODE + + // Save terminal keyboard settings + tcgetattr(STDIN_FILENO, &platform.defaultSettings); + + // Reconfigure terminal with new settings + struct termios keyboardNewSettings = { 0 }; + keyboardNewSettings = platform.defaultSettings; + + // New terminal settings for keyboard: turn off buffering (non-canonical mode), echo and key processing + // NOTE: ISIG controls if ^C and ^Z generate break signals or not + keyboardNewSettings.c_lflag &= ~(ICANON | ECHO | ISIG); + //keyboardNewSettings.c_iflag &= ~(ISTRIP | INLCR | ICRNL | IGNCR | IXON | IXOFF); + keyboardNewSettings.c_cc[VMIN] = 1; + keyboardNewSettings.c_cc[VTIME] = 0; + + // Set new keyboard settings (change occurs immediately) + tcsetattr(STDIN_FILENO, TCSANOW, &keyboardNewSettings); + + // Save old keyboard mode to restore it at the end + platform.defaultFileFlags = fcntl(STDIN_FILENO, F_GETFL, 0); // F_GETFL: Get the file access mode and the file status flags + fcntl(STDIN_FILENO, F_SETFL, platform.defaultFileFlags | O_NONBLOCK); // F_SETFL: Set the file status flags to the value specified + + // NOTE: If ioctl() returns -1, it means the call failed for some reason (error code set in errno) + int result = ioctl(STDIN_FILENO, KDGKBMODE, &platform.defaultKeyboardMode); + + // In case of failure, it could mean a remote keyboard is used (SSH) + if (result < 0) TRACELOG(LOG_WARNING, "RPI: Failed to change keyboard mode, an SSH keyboard is probably used"); + else + { + // Reconfigure keyboard mode to get: + // - scancodes (K_RAW) + // - keycodes (K_MEDIUMRAW) + // - ASCII chars (K_XLATE) + // - UNICODE chars (K_UNICODE) + ioctl(STDIN_FILENO, KDSKBMODE, K_XLATE); // ASCII chars + } + + // Register keyboard restore when program finishes + atexit(RestoreKeyboard); +} + +// Restore default keyboard input +static void RestoreKeyboard(void) +{ + // Reset to default keyboard settings + tcsetattr(STDIN_FILENO, TCSANOW, &platform.defaultSettings); + + // Reconfigure keyboard to default mode + fcntl(STDIN_FILENO, F_SETFL, platform.defaultFileFlags); + ioctl(STDIN_FILENO, KDSKBMODE, platform.defaultKeyboardMode); +} + +#if defined(SUPPORT_SSH_KEYBOARD_RPI) +// Process keyboard inputs +static void ProcessKeyboard(void) +{ + #define MAX_KEYBUFFER_SIZE 32 // Max size in bytes to read + + // Keyboard input polling (fill keys[256] array with status) + int bufferByteCount = 0; // Bytes available on the buffer + char keysBuffer[MAX_KEYBUFFER_SIZE] = { 0 }; // Max keys to be read at a time + + // Read availables keycodes from stdin + bufferByteCount = read(STDIN_FILENO, keysBuffer, MAX_KEYBUFFER_SIZE); // POSIX system call + + // Reset pressed keys array (it will be filled below) + for (int i = 0; i < MAX_KEYBOARD_KEYS; i++) + { + CORE.Input.Keyboard.currentKeyState[i] = 0; + CORE.Input.Keyboard.keyRepeatInFrame[i] = 0; + } + + // Fill all read bytes (looking for keys) + for (int i = 0; i < bufferByteCount; i++) + { + // NOTE: If (key == 0x1b), depending on next key, it could be a special keymap code! + // Up -> 1b 5b 41 / Left -> 1b 5b 44 / Right -> 1b 5b 43 / Down -> 1b 5b 42 + if (keysBuffer[i] == 0x1b) + { + // Check if ESCAPE key has been pressed to stop program + if (bufferByteCount == 1) CORE.Input.Keyboard.currentKeyState[CORE.Input.Keyboard.exitKey] = 1; + else + { + if (keysBuffer[i + 1] == 0x5b) // Special function key + { + if ((keysBuffer[i + 2] == 0x5b) || (keysBuffer[i + 2] == 0x31) || (keysBuffer[i + 2] == 0x32)) + { + // Process special function keys (F1 - F12) + switch (keysBuffer[i + 3]) + { + case 0x41: CORE.Input.Keyboard.currentKeyState[290] = 1; break; // raylib KEY_F1 + case 0x42: CORE.Input.Keyboard.currentKeyState[291] = 1; break; // raylib KEY_F2 + case 0x43: CORE.Input.Keyboard.currentKeyState[292] = 1; break; // raylib KEY_F3 + case 0x44: CORE.Input.Keyboard.currentKeyState[293] = 1; break; // raylib KEY_F4 + case 0x45: CORE.Input.Keyboard.currentKeyState[294] = 1; break; // raylib KEY_F5 + case 0x37: CORE.Input.Keyboard.currentKeyState[295] = 1; break; // raylib KEY_F6 + case 0x38: CORE.Input.Keyboard.currentKeyState[296] = 1; break; // raylib KEY_F7 + case 0x39: CORE.Input.Keyboard.currentKeyState[297] = 1; break; // raylib KEY_F8 + case 0x30: CORE.Input.Keyboard.currentKeyState[298] = 1; break; // raylib KEY_F9 + case 0x31: CORE.Input.Keyboard.currentKeyState[299] = 1; break; // raylib KEY_F10 + case 0x33: CORE.Input.Keyboard.currentKeyState[300] = 1; break; // raylib KEY_F11 + case 0x34: CORE.Input.Keyboard.currentKeyState[301] = 1; break; // raylib KEY_F12 + default: break; + } + + if (keysBuffer[i + 2] == 0x5b) i += 4; + else if ((keysBuffer[i + 2] == 0x31) || (keysBuffer[i + 2] == 0x32)) i += 5; + } + else + { + switch (keysBuffer[i + 2]) + { + case 0x41: CORE.Input.Keyboard.currentKeyState[265] = 1; break; // raylib KEY_UP + case 0x42: CORE.Input.Keyboard.currentKeyState[264] = 1; break; // raylib KEY_DOWN + case 0x43: CORE.Input.Keyboard.currentKeyState[262] = 1; break; // raylib KEY_RIGHT + case 0x44: CORE.Input.Keyboard.currentKeyState[263] = 1; break; // raylib KEY_LEFT + default: break; + } + + i += 3; // Jump to next key + } + + // NOTE: Some keys are not directly keymapped (CTRL, ALT, SHIFT) + } + } + } + else if (keysBuffer[i] == 0x0a) // raylib KEY_ENTER (don't mix with <linux/input.h> KEY_*) + { + CORE.Input.Keyboard.currentKeyState[257] = 1; + + CORE.Input.Keyboard.keyPressedQueue[CORE.Input.Keyboard.keyPressedQueueCount] = 257; // Add keys pressed into queue + CORE.Input.Keyboard.keyPressedQueueCount++; + } + else if (keysBuffer[i] == 0x7f) // raylib KEY_BACKSPACE + { + CORE.Input.Keyboard.currentKeyState[259] = 1; + + CORE.Input.Keyboard.keyPressedQueue[CORE.Input.Keyboard.keyPressedQueueCount] = 257; // Add keys pressed into queue + CORE.Input.Keyboard.keyPressedQueueCount++; + } + else + { + // Translate lowercase a-z letters to A-Z + if ((keysBuffer[i] >= 97) && (keysBuffer[i] <= 122)) + { + CORE.Input.Keyboard.currentKeyState[(int)keysBuffer[i] - 32] = 1; + } + else CORE.Input.Keyboard.currentKeyState[(int)keysBuffer[i]] = 1; + + CORE.Input.Keyboard.keyPressedQueue[CORE.Input.Keyboard.keyPressedQueueCount] = keysBuffer[i]; // Add keys pressed into queue + CORE.Input.Keyboard.keyPressedQueueCount++; + } + } + + // Check exit key (same functionality as GLFW3 KeyCallback()) + if (CORE.Input.Keyboard.currentKeyState[CORE.Input.Keyboard.exitKey] == 1) CORE.Window.shouldClose = true; + +#if defined(SUPPORT_SCREEN_CAPTURE) + // Check screen capture key (raylib key: KEY_F12) + if (CORE.Input.Keyboard.currentKeyState[301] == 1) + { + TakeScreenshot(TextFormat("screenshot%03i.png", screenshotCounter)); + screenshotCounter++; + } +#endif +} +#endif // SUPPORT_SSH_KEYBOARD_RPI + +// Initialise user input from evdev(/dev/input/event<N>) +// this means mouse, keyboard or gamepad devices +static void InitEvdevInput(void) +{ + char path[MAX_FILEPATH_LENGTH] = { 0 }; + DIR *directory = NULL; + struct dirent *entity = NULL; + + // Initialise keyboard file descriptor + platform.keyboardFd = -1; + + // Reset variables + for (int i = 0; i < MAX_TOUCH_POINTS; ++i) + { + CORE.Input.Touch.position[i].x = -1; + CORE.Input.Touch.position[i].y = -1; + } + + // Reset keyboard key state + for (int i = 0; i < MAX_KEYBOARD_KEYS; i++) + { + CORE.Input.Keyboard.currentKeyState[i] = 0; + CORE.Input.Keyboard.keyRepeatInFrame[i] = 0; + } + + // Open the linux directory of "/dev/input" + directory = opendir(DEFAULT_EVDEV_PATH); + + if (directory) + { + while ((entity = readdir(directory)) != NULL) + { + if ((strncmp("event", entity->d_name, strlen("event")) == 0) || // Search for devices named "event*" + (strncmp("mouse", entity->d_name, strlen("mouse")) == 0)) // Search for devices named "mouse*" + { + sprintf(path, "%s%s", DEFAULT_EVDEV_PATH, entity->d_name); + ConfigureEvdevDevice(path); // Configure the device if appropriate + } + } + + closedir(directory); + } + else TRACELOG(LOG_WARNING, "RPI: Failed to open linux event directory: %s", DEFAULT_EVDEV_PATH); +} + +// Identifies a input device and configures it for use if appropriate +static void ConfigureEvdevDevice(char *device) +{ + #define BITS_PER_LONG (8*sizeof(long)) + #define NBITS(x) ((((x) - 1)/BITS_PER_LONG) + 1) + #define OFF(x) ((x)%BITS_PER_LONG) + #define BIT(x) (1UL<<OFF(x)) + #define LONG(x) ((x)/BITS_PER_LONG) + #define TEST_BIT(array, bit) ((array[LONG(bit)] >> OFF(bit)) & 1) + + struct input_absinfo absinfo = { 0 }; + unsigned long evBits[NBITS(EV_MAX)] = { 0 }; + unsigned long absBits[NBITS(ABS_MAX)] = { 0 }; + unsigned long relBits[NBITS(REL_MAX)] = { 0 }; + unsigned long keyBits[NBITS(KEY_MAX)] = { 0 }; + bool hasAbs = false; + bool hasRel = false; + bool hasAbsMulti = false; + int freeWorkerId = -1; + int fd = -1; + + InputEventWorker *worker = NULL; + + // Open the device and allocate worker + //------------------------------------------------------------------------------------------------------- + // Find a free spot in the workers array + for (int i = 0; i < sizeof(platform.eventWorker)/sizeof(InputEventWorker); ++i) + { + if (platform.eventWorker[i].threadId == 0) + { + freeWorkerId = i; + break; + } + } + + // Select the free worker from array + if (freeWorkerId >= 0) + { + worker = &(platform.eventWorker[freeWorkerId]); // Grab a pointer to the worker + memset(worker, 0, sizeof(InputEventWorker)); // Clear the worker + } + else + { + TRACELOG(LOG_WARNING, "RPI: Failed to create input device thread for %s, out of worker slots", device); + return; + } + + // Open the device + fd = open(device, O_RDONLY | O_NONBLOCK); + if (fd < 0) + { + TRACELOG(LOG_WARNING, "RPI: Failed to open input device: %s", device); + return; + } + worker->fd = fd; + + // Grab number on the end of the devices name "event<N>" + int devNum = 0; + char *ptrDevName = strrchr(device, 't'); + worker->eventNum = -1; + + if (ptrDevName != NULL) + { + if (sscanf(ptrDevName, "t%d", &devNum) == 1) worker->eventNum = devNum; + } + else worker->eventNum = 0; // TODO: HACK: Grab number for mouse0 device! + + // At this point we have a connection to the device, but we don't yet know what the device is. + // It could be many things, even as simple as a power button... + //------------------------------------------------------------------------------------------------------- + + // Identify the device + //------------------------------------------------------------------------------------------------------- + ioctl(fd, EVIOCGBIT(0, sizeof(evBits)), evBits); // Read a bitfield of the available device properties + + // Check for absolute input devices + if (TEST_BIT(evBits, EV_ABS)) + { + ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absBits)), absBits); + + // Check for absolute movement support (usually touchscreens, but also joysticks) + if (TEST_BIT(absBits, ABS_X) && TEST_BIT(absBits, ABS_Y)) + { + hasAbs = true; + + // Get the scaling values + ioctl(fd, EVIOCGABS(ABS_X), &absinfo); + worker->absRange.x = absinfo.minimum; + worker->absRange.width = absinfo.maximum - absinfo.minimum; + platform.absRange.x = absinfo.minimum; + platform.absRange.width = absinfo.maximum - absinfo.minimum; + + ioctl(fd, EVIOCGABS(ABS_Y), &absinfo); + worker->absRange.y = absinfo.minimum; + worker->absRange.height = absinfo.maximum - absinfo.minimum; + platform.absRange.y = absinfo.minimum; + platform.absRange.height = absinfo.maximum - absinfo.minimum; + } + + // Check for multiple absolute movement support (usually multitouch touchscreens) + if (TEST_BIT(absBits, ABS_MT_POSITION_X) && TEST_BIT(absBits, ABS_MT_POSITION_Y)) + { + hasAbsMulti = true; + + // Get the scaling values + ioctl(fd, EVIOCGABS(ABS_X), &absinfo); + worker->absRange.x = absinfo.minimum; + worker->absRange.width = absinfo.maximum - absinfo.minimum; + platform.absRange.x = absinfo.minimum; + platform.absRange.width = absinfo.maximum - absinfo.minimum; + + ioctl(fd, EVIOCGABS(ABS_Y), &absinfo); + worker->absRange.y = absinfo.minimum; + worker->absRange.height = absinfo.maximum - absinfo.minimum; + platform.absRange.y = absinfo.minimum; + platform.absRange.height = absinfo.maximum - absinfo.minimum; + } + } + + // Check for relative movement support (usually mouse) + if (TEST_BIT(evBits, EV_REL)) + { + ioctl(fd, EVIOCGBIT(EV_REL, sizeof(relBits)), relBits); + + if (TEST_BIT(relBits, REL_X) && TEST_BIT(relBits, REL_Y)) hasRel = true; + } + + // Check for button support to determine the device type(usually on all input devices) + if (TEST_BIT(evBits, EV_KEY)) + { + ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keyBits)), keyBits); + + if (hasAbs || hasAbsMulti) + { + if (TEST_BIT(keyBits, BTN_TOUCH)) worker->isTouch = true; // This is a touchscreen + if (TEST_BIT(keyBits, BTN_TOOL_FINGER)) worker->isTouch = true; // This is a drawing tablet + if (TEST_BIT(keyBits, BTN_TOOL_PEN)) worker->isTouch = true; // This is a drawing tablet + if (TEST_BIT(keyBits, BTN_STYLUS)) worker->isTouch = true; // This is a drawing tablet + if (worker->isTouch || hasAbsMulti) worker->isMultitouch = true; // This is a multitouch capable device + } + + if (hasRel) + { + if (TEST_BIT(keyBits, BTN_LEFT)) worker->isMouse = true; // This is a mouse + if (TEST_BIT(keyBits, BTN_RIGHT)) worker->isMouse = true; // This is a mouse + } + + if (TEST_BIT(keyBits, BTN_A)) worker->isGamepad = true; // This is a gamepad + if (TEST_BIT(keyBits, BTN_TRIGGER)) worker->isGamepad = true; // This is a gamepad + if (TEST_BIT(keyBits, BTN_START)) worker->isGamepad = true; // This is a gamepad + if (TEST_BIT(keyBits, BTN_TL)) worker->isGamepad = true; // This is a gamepad + if (TEST_BIT(keyBits, BTN_TL)) worker->isGamepad = true; // This is a gamepad + + if (TEST_BIT(keyBits, KEY_SPACE)) worker->isKeyboard = true; // This is a keyboard + } + //------------------------------------------------------------------------------------------------------- + + // Decide what to do with the device + //------------------------------------------------------------------------------------------------------- + if (worker->isKeyboard && (platform.keyboardFd == -1)) + { + // Use the first keyboard encountered. This assumes that a device that says it's a keyboard is just a + // keyboard. The keyboard is polled synchronously, whereas other input devices are polled in separate + // threads so that they don't drop events when the frame rate is slow. + TRACELOG(LOG_INFO, "RPI: Opening keyboard device: %s", device); + platform.keyboardFd = worker->fd; + } + else if (worker->isTouch || worker->isMouse) + { + // Looks like an interesting device + TRACELOG(LOG_INFO, "RPI: Opening input device: %s (%s%s%s%s)", device, + worker->isMouse? "mouse " : "", + worker->isMultitouch? "multitouch " : "", + worker->isTouch? "touchscreen " : "", + worker->isGamepad? "gamepad " : ""); + platform.mouseFd = worker->fd; + + // NOTE: moved the mouse/touch/gesture input to PollInputEvents()/ + // so added the "platform.mouseFd = worker->fd;" line above + // and commented the thread code below: + + // Create a thread for this device + //int error = pthread_create(&worker->threadId, NULL, &EventThread, (void *)worker); + //if (error != 0) + //{ + // TRACELOG(LOG_WARNING, "RPI: Failed to create input device thread: %s (error: %d)", device, error); + // worker->threadId = 0; + // close(fd); + //} + +#if defined(USE_LAST_TOUCH_DEVICE) + // Find touchscreen with the highest index + int maxTouchNumber = -1; + + for (int i = 0; i < sizeof(platform.eventWorker)/sizeof(InputEventWorker); ++i) + { + if (platform.eventWorker[i].isTouch && (platform.eventWorker[i].eventNum > maxTouchNumber)) maxTouchNumber = platform.eventWorker[i].eventNum; + } + + // Find touchscreens with lower indexes + for (int i = 0; i < sizeof(platform.eventWorker)/sizeof(InputEventWorker); ++i) + { + if (platform.eventWorker[i].isTouch && (platform.eventWorker[i].eventNum < maxTouchNumber)) + { + if (platform.eventWorker[i].threadId != 0) + { + TRACELOG(LOG_WARNING, "RPI: Found duplicate touchscreen, killing touchscreen on event: %d", i); + pthread_cancel(platform.eventWorker[i].threadId); + close(platform.eventWorker[i].fd); + } + } + } +#endif + } + else close(fd); // We are not interested in this device + //------------------------------------------------------------------------------------------------------- +} + +// Poll and process evdev keyboard events +static void PollKeyboardEvents(void) +{ + int fd = platform.keyboardFd; + if (fd == -1) return; + + struct input_event event = { 0 }; + int keycode = -1; + + // Try to read data from the keyboard and only continue if successful + while (read(fd, &event, sizeof(event)) == (int)sizeof(event)) + { + // Button parsing + if (event.type == EV_KEY) + { +#if defined(SUPPORT_SSH_KEYBOARD_RPI) + // Change keyboard mode to events + platform.eventKeyboardMode = true; +#endif + // Keyboard button parsing + if ((event.code >= 1) && (event.code <= 255)) //Keyboard keys appear for codes 1 to 255 + { + keycode = keymapUS[event.code & 0xFF]; // The code we get is a scancode so we look up the appropriate keycode + + // Make sure we got a valid keycode + if ((keycode > 0) && (keycode < sizeof(CORE.Input.Keyboard.currentKeyState))) + { + // WARNING: https://www.kernel.org/doc/Documentation/input/input.txt + // Event interface: 'value' is the value the event carries. Either a relative change for EV_REL, + // absolute new value for EV_ABS (joysticks ...), or 0 for EV_KEY for release, 1 for keypress and 2 for autorepeat + CORE.Input.Keyboard.currentKeyState[keycode] = (event.value >= 1)? 1 : 0; + if (event.value >= 1) + { + CORE.Input.Keyboard.keyPressedQueue[CORE.Input.Keyboard.keyPressedQueueCount] = keycode; // Register last key pressed + CORE.Input.Keyboard.keyPressedQueueCount++; + } + + #if defined(SUPPORT_SCREEN_CAPTURE) + // Check screen capture key (raylib key: KEY_F12) + if (CORE.Input.Keyboard.currentKeyState[301] == 1) + { + TakeScreenshot(TextFormat("screenshot%03i.png", screenshotCounter)); + screenshotCounter++; + } + #endif + + // Detect char presses (unicode) + if (event.value == 1) + { + // Check if there is space available in the queue + if (CORE.Input.Keyboard.charPressedQueueCount < MAX_CHAR_PRESSED_QUEUE) + { + // Add character to the queue + CORE.Input.Keyboard.charPressedQueue[CORE.Input.Keyboard.charPressedQueueCount] = EvkeyToUnicodeLUT[event.code]; + CORE.Input.Keyboard.charPressedQueueCount++; + } + } + + if (CORE.Input.Keyboard.currentKeyState[CORE.Input.Keyboard.exitKey] == 1) CORE.Window.shouldClose = true; + + TRACELOGD("RPI: KEY_%s ScanCode: %4i KeyCode: %4i", (event.value == 0)? "UP" : "DOWN", event.code, keycode); + } + } + } + } +} + +// Input device events reading thread +static void *EventThread(void *arg) +{ +/* + struct input_event event = { 0 }; + InputEventWorker *worker = (InputEventWorker *)arg; + + int touchAction = -1; // 0-TOUCH_ACTION_UP, 1-TOUCH_ACTION_DOWN, 2-TOUCH_ACTION_MOVE + bool gestureUpdate = false; // Flag to note gestures require to update + + while (!CORE.Window.shouldClose) + { + // Try to read data from the device and only continue if successful + while (read(worker->fd, &event, sizeof(event)) == (int)sizeof(event)) + { + // Relative movement parsing + if (event.type == EV_REL) + { + if (event.code == REL_X) + { + if (platform.cursorRelative) + { + CORE.Input.Mouse.currentPosition.x -= event.value; + CORE.Input.Touch.position[0].x = CORE.Input.Mouse.currentPosition.x; + } + else + { + CORE.Input.Mouse.currentPosition.x += event.value; + CORE.Input.Touch.position[0].x = CORE.Input.Mouse.currentPosition.x; + } + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + if (event.code == REL_Y) + { + if (platform.cursorRelative) + { + CORE.Input.Mouse.currentPosition.y -= event.value; + CORE.Input.Touch.position[0].y = CORE.Input.Mouse.currentPosition.y; + } + else + { + CORE.Input.Mouse.currentPosition.y += event.value; + CORE.Input.Touch.position[0].y = CORE.Input.Mouse.currentPosition.y; + } + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + if (event.code == REL_WHEEL) platform.eventWheelMove.y += event.value; + } + + // Absolute movement parsing + if (event.type == EV_ABS) + { + // Basic movement + if (event.code == ABS_X) + { + CORE.Input.Mouse.currentPosition.x = (event.value - worker->absRange.x)*CORE.Window.screen.width/worker->absRange.width; // Scale according to absRange + CORE.Input.Touch.position[0].x = (event.value - worker->absRange.x)*CORE.Window.screen.width/worker->absRange.width; // Scale according to absRange + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + if (event.code == ABS_Y) + { + CORE.Input.Mouse.currentPosition.y = (event.value - worker->absRange.y)*CORE.Window.screen.height/worker->absRange.height; // Scale according to absRange + CORE.Input.Touch.position[0].y = (event.value - worker->absRange.y)*CORE.Window.screen.height/worker->absRange.height; // Scale according to absRange + + touchAction = 2; // TOUCH_ACTION_MOVE + gestureUpdate = true; + } + + // Multitouch movement + if (event.code == ABS_MT_SLOT) worker->touchSlot = event.value; // Remember the slot number for the folowing events + + if (event.code == ABS_MT_POSITION_X) + { + if (worker->touchSlot < MAX_TOUCH_POINTS) CORE.Input.Touch.position[worker->touchSlot].x = (event.value - worker->absRange.x)*CORE.Window.screen.width/worker->absRange.width; // Scale according to absRange + } + + if (event.code == ABS_MT_POSITION_Y) + { + if (worker->touchSlot < MAX_TOUCH_POINTS) CORE.Input.Touch.position[worker->touchSlot].y = (event.value - worker->absRange.y)*CORE.Window.screen.height/worker->absRange.height; // Scale according to absRange + } + + if (event.code == ABS_MT_TRACKING_ID) + { + if ((event.value < 0) && (worker->touchSlot < MAX_TOUCH_POINTS)) + { + // Touch has ended for this point + CORE.Input.Touch.position[worker->touchSlot].x = -1; + CORE.Input.Touch.position[worker->touchSlot].y = -1; + } + } + + // Touchscreen tap + if (event.code == ABS_PRESSURE) + { + int previousMouseLeftButtonState = platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT]; + + if (!event.value && previousMouseLeftButtonState) + { + platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 0; + + touchAction = 0; // TOUCH_ACTION_UP + gestureUpdate = true; + } + + if (event.value && !previousMouseLeftButtonState) + { + platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 1; + + touchAction = 1; // TOUCH_ACTION_DOWN + gestureUpdate = true; + } + } + + } + + // Button parsing + if (event.type == EV_KEY) + { + // Mouse button parsing + if ((event.code == BTN_TOUCH) || (event.code == BTN_LEFT)) + { + platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = event.value; + + if (event.value > 0) touchAction = 1; // TOUCH_ACTION_DOWN + else touchAction = 0; // TOUCH_ACTION_UP + gestureUpdate = true; + } + + if (event.code == BTN_RIGHT) platform.currentButtonStateEvdev[MOUSE_BUTTON_RIGHT] = event.value; + if (event.code == BTN_MIDDLE) platform.currentButtonStateEvdev[MOUSE_BUTTON_MIDDLE] = event.value; + if (event.code == BTN_SIDE) platform.currentButtonStateEvdev[MOUSE_BUTTON_SIDE] = event.value; + if (event.code == BTN_EXTRA) platform.currentButtonStateEvdev[MOUSE_BUTTON_EXTRA] = event.value; + if (event.code == BTN_FORWARD) platform.currentButtonStateEvdev[MOUSE_BUTTON_FORWARD] = event.value; + if (event.code == BTN_BACK) platform.currentButtonStateEvdev[MOUSE_BUTTON_BACK] = event.value; + } + + // Screen confinement + if (!CORE.Input.Mouse.cursorHidden) + { + if (CORE.Input.Mouse.currentPosition.x < 0) CORE.Input.Mouse.currentPosition.x = 0; + if (CORE.Input.Mouse.currentPosition.x > CORE.Window.screen.width/CORE.Input.Mouse.scale.x) CORE.Input.Mouse.currentPosition.x = CORE.Window.screen.width/CORE.Input.Mouse.scale.x; + + if (CORE.Input.Mouse.currentPosition.y < 0) CORE.Input.Mouse.currentPosition.y = 0; + if (CORE.Input.Mouse.currentPosition.y > CORE.Window.screen.height/CORE.Input.Mouse.scale.y) CORE.Input.Mouse.currentPosition.y = CORE.Window.screen.height/CORE.Input.Mouse.scale.y; + } + + // Update touch point count + CORE.Input.Touch.pointCount = 0; + for (int i = 0; i < MAX_TOUCH_POINTS; i++) + { + if (CORE.Input.Touch.position[i].x >= 0) CORE.Input.Touch.pointCount++; + } + +#if defined(SUPPORT_GESTURES_SYSTEM) + if (gestureUpdate) + { + GestureEvent gestureEvent = { 0 }; + + gestureEvent.touchAction = touchAction; + gestureEvent.pointCount = CORE.Input.Touch.pointCount; + + for (int i = 0; i < MAX_TOUCH_POINTS; i++) + { + gestureEvent.pointId[i] = i; + gestureEvent.position[i] = CORE.Input.Touch.position[i]; + } + + ProcessGestureEvent(gestureEvent); + } +#endif + } + + WaitTime(0.005); // Sleep for 5ms to avoid hogging CPU time + } + + close(worker->fd); +*/ + return NULL; +} + +// Initialize gamepad system +static void InitGamepad(void) +{ + char gamepadDev[128] = { 0 }; + + for (int i = 0; i < MAX_GAMEPADS; i++) + { + sprintf(gamepadDev, "%s%i", DEFAULT_GAMEPAD_DEV, i); + + if ((platform.gamepadStreamFd[i] = open(gamepadDev, O_RDONLY | O_NONBLOCK)) < 0) + { + // NOTE: Only show message for first gamepad + if (i == 0) TRACELOG(LOG_WARNING, "RPI: Failed to open Gamepad device, no gamepad available"); + } + else + { + CORE.Input.Gamepad.ready[i] = true; + + // NOTE: Only create one thread + if (i == 0) + { + int error = pthread_create(&platform.gamepadThreadId, NULL, &GamepadThread, NULL); + + if (error != 0) TRACELOG(LOG_WARNING, "RPI: Failed to create gamepad input event thread"); + else TRACELOG(LOG_INFO, "RPI: Gamepad device initialized successfully"); + } + + ioctl(platform.gamepadStreamFd[i], JSIOCGNAME(64), &CORE.Input.Gamepad.name[i]); + ioctl(platform.gamepadStreamFd[i], JSIOCGAXES, &CORE.Input.Gamepad.axisCount[i]); + } + } +} + +// Process Gamepad (/dev/input/js0) +static void *GamepadThread(void *arg) +{ + #define JS_EVENT_BUTTON 0x01 // Button pressed/released + #define JS_EVENT_AXIS 0x02 // Joystick axis moved + #define JS_EVENT_INIT 0x80 // Initial state of device + + struct js_event { + unsigned int time; // event timestamp in milliseconds + short value; // event value + unsigned char type; // event type + unsigned char number; // event axis/button number + }; + + // Read gamepad event + struct js_event gamepadEvent = { 0 }; + + while (!CORE.Window.shouldClose) + { + for (int i = 0; i < MAX_GAMEPADS; i++) + { + if (read(platform.gamepadStreamFd[i], &gamepadEvent, sizeof(struct js_event)) == (int)sizeof(struct js_event)) + { + gamepadEvent.type &= ~JS_EVENT_INIT; // Ignore synthetic events + + // Process gamepad events by type + if (gamepadEvent.type == JS_EVENT_BUTTON) + { + //TRACELOG(LOG_WARNING, "RPI: Gamepad button: %i, value: %i", gamepadEvent.number, gamepadEvent.value); + + if (gamepadEvent.number < MAX_GAMEPAD_BUTTONS) + { + // 1 - button pressed, 0 - button released + CORE.Input.Gamepad.currentButtonState[i][gamepadEvent.number] = (int)gamepadEvent.value; + + if ((int)gamepadEvent.value == 1) CORE.Input.Gamepad.lastButtonPressed = gamepadEvent.number; + else CORE.Input.Gamepad.lastButtonPressed = 0; // GAMEPAD_BUTTON_UNKNOWN + } + } + else if (gamepadEvent.type == JS_EVENT_AXIS) + { + //TRACELOG(LOG_WARNING, "RPI: Gamepad axis: %i, value: %i", gamepadEvent.number, gamepadEvent.value); + + if (gamepadEvent.number < MAX_GAMEPAD_AXIS) + { + // NOTE: Scaling of gamepadEvent.value to get values between -1..1 + CORE.Input.Gamepad.axisState[i][gamepadEvent.number] = (float)gamepadEvent.value/32768; + } + } + } + else WaitTime(0.001); // Sleep for 1 ms to avoid hogging CPU time + } + } + + return NULL; +} + +// Search matching DRM mode in connector's mode list +static int FindMatchingConnectorMode(const drmModeConnector *connector, const drmModeModeInfo *mode) +{ + if (NULL == connector) return -1; + if (NULL == mode) return -1; + + // safe bitwise comparison of two modes + #define BINCMP(a, b) memcmp((a), (b), (sizeof(a) < sizeof(b))? sizeof(a) : sizeof(b)) + + for (size_t i = 0; i < connector->count_modes; i++) + { + TRACELOG(LOG_TRACE, "DISPLAY: DRM mode: %d %ux%u@%u %s", i, connector->modes[i].hdisplay, connector->modes[i].vdisplay, + connector->modes[i].vrefresh, (connector->modes[i].flags & DRM_MODE_FLAG_INTERLACE)? "interlaced" : "progressive"); + + if (0 == BINCMP(&platform.crtc->mode, &platform.connector->modes[i])) return i; + } + + return -1; + + #undef BINCMP +} + +// Search exactly matching DRM connector mode in connector's list +static int FindExactConnectorMode(const drmModeConnector *connector, uint width, uint height, uint fps, bool allowInterlaced) +{ + TRACELOG(LOG_TRACE, "DISPLAY: Searching exact connector mode for %ux%u@%u, selecting an interlaced mode is allowed: %s", width, height, fps, allowInterlaced? "yes" : "no"); + + if (NULL == connector) return -1; + + for (int i = 0; i < platform.connector->count_modes; i++) + { + const drmModeModeInfo *const mode = &platform.connector->modes[i]; + + TRACELOG(LOG_TRACE, "DISPLAY: DRM Mode %d %ux%u@%u %s", i, mode->hdisplay, mode->vdisplay, mode->vrefresh, (mode->flags & DRM_MODE_FLAG_INTERLACE)? "interlaced" : "progressive"); + + if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && (!allowInterlaced)) continue; + + if ((mode->hdisplay == width) && (mode->vdisplay == height) && (mode->vrefresh == fps)) return i; + } + + TRACELOG(LOG_TRACE, "DISPLAY: No DRM exact matching mode found"); + return -1; +} + +// Search the nearest matching DRM connector mode in connector's list +static int FindNearestConnectorMode(const drmModeConnector *connector, uint width, uint height, uint fps, bool allowInterlaced) +{ + TRACELOG(LOG_TRACE, "DISPLAY: Searching nearest connector mode for %ux%u@%u, selecting an interlaced mode is allowed: %s", width, height, fps, allowInterlaced? "yes" : "no"); + + if (NULL == connector) return -1; + + int nearestIndex = -1; + for (int i = 0; i < platform.connector->count_modes; i++) + { + const drmModeModeInfo *const mode = &platform.connector->modes[i]; + + TRACELOG(LOG_TRACE, "DISPLAY: DRM mode: %d %ux%u@%u %s", i, mode->hdisplay, mode->vdisplay, mode->vrefresh, + (mode->flags & DRM_MODE_FLAG_INTERLACE)? "interlaced" : "progressive"); + + if ((mode->hdisplay < width) || (mode->vdisplay < height)) + { + TRACELOG(LOG_TRACE, "DISPLAY: DRM mode is too small"); + continue; + } + + if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && (!allowInterlaced)) + { + TRACELOG(LOG_TRACE, "DISPLAY: DRM shouldn't choose an interlaced mode"); + continue; + } + + if (nearestIndex < 0) + { + nearestIndex = i; + continue; + } + + const int widthDiff = abs(mode->hdisplay - width); + const int heightDiff = abs(mode->vdisplay - height); + const int fpsDiff = abs(mode->vrefresh - fps); + + const int nearestWidthDiff = abs(platform.connector->modes[nearestIndex].hdisplay - width); + const int nearestHeightDiff = abs(platform.connector->modes[nearestIndex].vdisplay - height); + const int nearestFpsDiff = abs(platform.connector->modes[nearestIndex].vrefresh - fps); + + if ((widthDiff < nearestWidthDiff) || (heightDiff < nearestHeightDiff) || (fpsDiff < nearestFpsDiff)) { + nearestIndex = i; + } + } + + return nearestIndex; +} + +// EOF |