hybris/egl/platforms/null/eglplatform_null.c

   1 #include <ws.h>
   2 #include <dlfcn.h>
   3 #include <stdlib.h>
   4
   5 #include <hybris/internal/binding.h>
   6
   7 static void * (*_androidCreateDisplaySurface)();
   8
   9 static void *_libui = NULL;
  10
  11 static void _init_androidui()
  12 {
  13        _libui = (void *) android_dlopen("/system/lib/libui.so", RTLD_LAZY);
  14 }
  15
  16 #define UI_DLSYM(fptr, sym) do { if (_libui == NULL) { _init_androidui(); }; if (*(fptr) == NULL) { *(fptr) = (void *) android_dlsym(_libui, sym); } } while (0)
  17
  18 static EGLNativeWindowType android_createDisplaySurface()
  19 {
  20         UI_DLSYM(&_androidCreateDisplaySurface, "android_createDisplaySurface");
  21         return (EGLNativeWindowType) (*_androidCreateDisplaySurface)();
  22 }
  23
  24
  25
  26 static int nullws_IsValidDisplay(EGLNativeDisplayType display)
  27 {
  28         return 1;
  29 }
  30
  31 static EGLNativeWindowType nullws_CreateWindow(EGLNativeWindowType win, EGLNativeDisplayType display)
  32 {
  33         if (win == 0)
  34         {
  35                 return android_createDisplaySurface();
  36         }
  37         else
  38                 return win;
  39 }
  40
  41 static void nullws_DestroyWindow(EGLNativeWindowType win)
  42 {
  43         // TODO: Cleanup?
  44 }
  45
  46 static __eglMustCastToProperFunctionPointerType nullws_eglGetProcAddress(const char *procname)
  47 {
  48         return NULL;
  49 }
  50
  51 static void nullws_passthroughImageKHR(EGLContext *ctx, EGLenum *target, EGLClientBuffer *buffer, const EGLint **attrib_list)
  52 {
  53 }
  54
  55 const char *nullws_eglQueryString(EGLDisplay dpy, EGLint name, const char *(*real_eglQueryString)(EGLDisplay dpy, EGLint name))
  56 {
  57         return (*real_eglQueryString)(dpy, name);
  58 }
  59
  60
  61 struct ws_module ws_module_info = {
  62         nullws_IsValidDisplay,
  63         nullws_CreateWindow,
  64         nullws_DestroyWindow,
  65         nullws_eglGetProcAddress,
  66         nullws_passthroughImageKHR,
  67         nullws_eglQueryString
  68 };
  69