*initHEADmaster

1 files changed, 442 insertions, 0 deletions

diff --git a/source/3rd-party/SDL2/src/video/raspberry/SDL_rpivideo.c b/source/3rd-party/SDL2/src/video/raspberry/SDL_rpivideo.c
new file mode 100644
index 0000000..c4f4a60
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/raspberry/SDL_rpivideo.c
@@ -0,0 +1,442 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_RPI
+
+/* References
+ * http://elinux.org/RPi_VideoCore_APIs
+ * https://github.com/raspberrypi/firmware/blob/master/opt/vc/src/hello_pi/hello_triangle/triangle.c
+ * http://cgit.freedesktop.org/wayland/weston/tree/src/rpi-renderer.c
+ * http://cgit.freedesktop.org/wayland/weston/tree/src/compositor-rpi.c
+ */
+
+/* SDL internals */
+#include "../SDL_sysvideo.h"
+#include "SDL_version.h"
+#include "SDL_syswm.h"
+#include "SDL_loadso.h"
+#include "SDL_events.h"
+#include "../../events/SDL_mouse_c.h"
+#include "../../events/SDL_keyboard_c.h"
+#include "SDL_hints.h"
+
+#ifdef SDL_INPUT_LINUXEV
+#include "../../core/linux/SDL_evdev.h"
+#endif
+
+/* RPI declarations */
+#include "SDL_rpivideo.h"
+#include "SDL_rpievents_c.h"
+#include "SDL_rpiopengles.h"
+#include "SDL_rpimouse.h"
+
+static int
+RPI_Available(void)
+{
+    return 1;
+}
+
+static void
+RPI_Destroy(SDL_VideoDevice * device)
+{
+    SDL_free(device->driverdata);
+    SDL_free(device);
+}
+
+static int 
+RPI_GetRefreshRate()
+{
+    TV_DISPLAY_STATE_T tvstate;
+    if (vc_tv_get_display_state( &tvstate ) == 0) {
+        //The width/height parameters are in the same position in the union
+        //for HDMI and SDTV
+        HDMI_PROPERTY_PARAM_T property;
+        property.property = HDMI_PROPERTY_PIXEL_CLOCK_TYPE;
+        vc_tv_hdmi_get_property(&property);
+        return property.param1 == HDMI_PIXEL_CLOCK_TYPE_NTSC ? 
+            tvstate.display.hdmi.frame_rate * (1000.0f/1001.0f) : 
+            tvstate.display.hdmi.frame_rate;
+    } 
+    return 60;  /* Failed to get display state, default to 60 */
+}
+
+static SDL_VideoDevice *
+RPI_Create()
+{
+    SDL_VideoDevice *device;
+    SDL_VideoData *phdata;
+
+    /* Initialize SDL_VideoDevice structure */
+    device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
+    if (device == NULL) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    /* Initialize internal data */
+    phdata = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
+    if (phdata == NULL) {
+        SDL_OutOfMemory();
+        SDL_free(device);
+        return NULL;
+    }
+
+    device->driverdata = phdata;
+
+    /* Setup amount of available displays */
+    device->num_displays = 0;
+
+    /* Set device free function */
+    device->free = RPI_Destroy;
+
+    /* Setup all functions which we can handle */
+    device->VideoInit = RPI_VideoInit;
+    device->VideoQuit = RPI_VideoQuit;
+    device->GetDisplayModes = RPI_GetDisplayModes;
+    device->SetDisplayMode = RPI_SetDisplayMode;
+    device->CreateSDLWindow = RPI_CreateWindow;
+    device->CreateSDLWindowFrom = RPI_CreateWindowFrom;
+    device->SetWindowTitle = RPI_SetWindowTitle;
+    device->SetWindowIcon = RPI_SetWindowIcon;
+    device->SetWindowPosition = RPI_SetWindowPosition;
+    device->SetWindowSize = RPI_SetWindowSize;
+    device->ShowWindow = RPI_ShowWindow;
+    device->HideWindow = RPI_HideWindow;
+    device->RaiseWindow = RPI_RaiseWindow;
+    device->MaximizeWindow = RPI_MaximizeWindow;
+    device->MinimizeWindow = RPI_MinimizeWindow;
+    device->RestoreWindow = RPI_RestoreWindow;
+    device->SetWindowGrab = RPI_SetWindowGrab;
+    device->DestroyWindow = RPI_DestroyWindow;
+#if 0
+    device->GetWindowWMInfo = RPI_GetWindowWMInfo;
+#endif
+    device->GL_LoadLibrary = RPI_GLES_LoadLibrary;
+    device->GL_GetProcAddress = RPI_GLES_GetProcAddress;
+    device->GL_UnloadLibrary = RPI_GLES_UnloadLibrary;
+    device->GL_CreateContext = RPI_GLES_CreateContext;
+    device->GL_MakeCurrent = RPI_GLES_MakeCurrent;
+    device->GL_SetSwapInterval = RPI_GLES_SetSwapInterval;
+    device->GL_GetSwapInterval = RPI_GLES_GetSwapInterval;
+    device->GL_SwapWindow = RPI_GLES_SwapWindow;
+    device->GL_DeleteContext = RPI_GLES_DeleteContext;
+    device->GL_DefaultProfileConfig = RPI_GLES_DefaultProfileConfig;
+
+    device->PumpEvents = RPI_PumpEvents;
+
+    return device;
+}
+
+VideoBootStrap RPI_bootstrap = {
+    "RPI",
+    "RPI Video Driver",
+    RPI_Available,
+    RPI_Create
+};
+
+/*****************************************************************************/
+/* SDL Video and Display initialization/handling functions                   */
+/*****************************************************************************/
+int
+RPI_VideoInit(_THIS)
+{
+    SDL_VideoDisplay display;
+    SDL_DisplayMode current_mode;
+    SDL_DisplayData *data;
+    uint32_t w,h;
+
+    /* Initialize BCM Host */
+    bcm_host_init();
+
+    SDL_zero(current_mode);
+
+    if (graphics_get_display_size( 0, &w, &h) < 0) {
+        return -1;
+    }
+
+    current_mode.w = w;
+    current_mode.h = h;
+    current_mode.refresh_rate = RPI_GetRefreshRate();
+    /* 32 bpp for default */
+    current_mode.format = SDL_PIXELFORMAT_ABGR8888;
+
+    current_mode.driverdata = NULL;
+
+    SDL_zero(display);
+    display.desktop_mode = current_mode;
+    display.current_mode = current_mode;
+
+    /* Allocate display internal data */
+    data = (SDL_DisplayData *) SDL_calloc(1, sizeof(SDL_DisplayData));
+    if (data == NULL) {
+        return SDL_OutOfMemory();
+    }
+
+    data->dispman_display = vc_dispmanx_display_open( 0 /* LCD */);
+
+    display.driverdata = data;
+
+    SDL_AddVideoDisplay(&display);
+
+#ifdef SDL_INPUT_LINUXEV    
+    if (SDL_EVDEV_Init() < 0) {
+        return -1;
+    }
+#endif    
+    
+    RPI_InitMouse(_this);
+
+    return 1;
+}
+
+void
+RPI_VideoQuit(_THIS)
+{
+#ifdef SDL_INPUT_LINUXEV    
+    SDL_EVDEV_Quit();
+#endif    
+}
+
+void
+RPI_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
+{
+    /* Only one display mode available, the current one */
+    SDL_AddDisplayMode(display, &display->current_mode);
+}
+
+int
+RPI_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
+{
+    return 0;
+}
+
+static void
+RPI_vsync_callback(DISPMANX_UPDATE_HANDLE_T u, void *data)
+{
+   SDL_WindowData *wdata = ((SDL_WindowData *) data);
+
+   SDL_LockMutex(wdata->vsync_cond_mutex);
+   SDL_CondSignal(wdata->vsync_cond);
+   SDL_UnlockMutex(wdata->vsync_cond_mutex);
+}
+
+int
+RPI_CreateWindow(_THIS, SDL_Window * window)
+{
+    SDL_WindowData *wdata;
+    SDL_VideoDisplay *display;
+    SDL_DisplayData *displaydata;
+    VC_RECT_T dst_rect;
+    VC_RECT_T src_rect;
+    VC_DISPMANX_ALPHA_T         dispman_alpha;
+    DISPMANX_UPDATE_HANDLE_T dispman_update;
+    uint32_t layer = SDL_RPI_VIDEOLAYER;
+    const char *env;
+
+    /* Disable alpha, otherwise the app looks composed with whatever dispman is showing (X11, console,etc) */
+    dispman_alpha.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS; 
+    dispman_alpha.opacity = 0xFF; 
+    dispman_alpha.mask = 0;
+
+    /* Allocate window internal data */
+    wdata = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));
+    if (wdata == NULL) {
+        return SDL_OutOfMemory();
+    }
+    display = SDL_GetDisplayForWindow(window);
+    displaydata = (SDL_DisplayData *) display->driverdata;
+
+    /* Windows have one size for now */
+    window->w = display->desktop_mode.w;
+    window->h = display->desktop_mode.h;
+
+    /* OpenGL ES is the law here, buddy */
+    window->flags |= SDL_WINDOW_OPENGL;
+
+    /* Create a dispman element and associate a window to it */
+    dst_rect.x = 0;
+    dst_rect.y = 0;
+    dst_rect.width = window->w;
+    dst_rect.height = window->h;
+
+    src_rect.x = 0;
+    src_rect.y = 0;
+    src_rect.width = window->w << 16;
+    src_rect.height = window->h << 16;
+
+    env = SDL_GetHint(SDL_HINT_RPI_VIDEO_LAYER);
+    if (env) {
+        layer = SDL_atoi(env);
+    }
+
+    dispman_update = vc_dispmanx_update_start( 0 );
+    wdata->dispman_window.element = vc_dispmanx_element_add (dispman_update,
+                                                             displaydata->dispman_display,
+                                                             layer /* layer */,
+                                                             &dst_rect,
+                                                             0 /*src*/,
+                                                             &src_rect,
+                                                             DISPMANX_PROTECTION_NONE,
+                                                             &dispman_alpha /*alpha*/,
+                                                             0 /*clamp*/,
+                                                             0 /*transform*/);
+    wdata->dispman_window.width = window->w;
+    wdata->dispman_window.height = window->h;
+    vc_dispmanx_update_submit_sync(dispman_update);
+    
+    if (!_this->egl_data) {
+        if (SDL_GL_LoadLibrary(NULL) < 0) {
+            return -1;
+        }
+    }
+    wdata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType) &wdata->dispman_window);
+
+    if (wdata->egl_surface == EGL_NO_SURFACE) {
+        return SDL_SetError("Could not create GLES window surface");
+    }
+
+    /* Start generating vsync callbacks if necesary */
+    wdata->double_buffer = SDL_FALSE;
+    if (SDL_GetHintBoolean(SDL_HINT_VIDEO_DOUBLE_BUFFER, SDL_FALSE)) {
+        wdata->vsync_cond = SDL_CreateCond();
+        wdata->vsync_cond_mutex = SDL_CreateMutex();
+        wdata->double_buffer = SDL_TRUE;
+        vc_dispmanx_vsync_callback(displaydata->dispman_display, RPI_vsync_callback, (void*)wdata);
+    }
+
+    /* Setup driver data for this window */
+    window->driverdata = wdata;
+
+    /* One window, it always has focus */
+    SDL_SetMouseFocus(window);
+    SDL_SetKeyboardFocus(window);
+
+    /* Window has been successfully created */
+    return 0;
+}
+
+void
+RPI_DestroyWindow(_THIS, SDL_Window * window)
+{
+    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
+    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
+    SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata;
+
+    if(data) {
+        if (data->double_buffer) {
+            /* Wait for vsync, and then stop vsync callbacks and destroy related stuff, if needed */
+            SDL_LockMutex(data->vsync_cond_mutex);
+            SDL_CondWait(data->vsync_cond, data->vsync_cond_mutex);
+            SDL_UnlockMutex(data->vsync_cond_mutex);
+
+            vc_dispmanx_vsync_callback(displaydata->dispman_display, NULL, NULL);
+
+            SDL_DestroyCond(data->vsync_cond);
+            SDL_DestroyMutex(data->vsync_cond_mutex);
+        }
+
+#if SDL_VIDEO_OPENGL_EGL
+        if (data->egl_surface != EGL_NO_SURFACE) {
+            SDL_EGL_DestroySurface(_this, data->egl_surface);
+        }
+#endif
+        SDL_free(data);
+        window->driverdata = NULL;
+    }
+}
+
+int
+RPI_CreateWindowFrom(_THIS, SDL_Window * window, const void *data)
+{
+    return -1;
+}
+
+void
+RPI_SetWindowTitle(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
+{
+}
+void
+RPI_SetWindowPosition(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_SetWindowSize(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_ShowWindow(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_HideWindow(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_RaiseWindow(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_MaximizeWindow(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_MinimizeWindow(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_RestoreWindow(_THIS, SDL_Window * window)
+{
+}
+void
+RPI_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
+{
+
+}
+
+/*****************************************************************************/
+/* SDL Window Manager function                                               */
+/*****************************************************************************/
+#if 0
+SDL_bool
+RPI_GetWindowWMInfo(_THIS, SDL_Window * window, struct SDL_SysWMinfo *info)
+{
+    if (info->version.major <= SDL_MAJOR_VERSION) {
+        return SDL_TRUE;
+    } else {
+        SDL_SetError("application not compiled with SDL %d.%d",
+                     SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
+        return SDL_FALSE;
+    }
+
+    /* Failed to get window manager information */
+    return SDL_FALSE;
+}
+#endif
+
+#endif /* SDL_VIDEO_DRIVER_RPI */
+
+/* vi: set ts=4 sw=4 expandtab: */