hybris/egl/platforms/hwcomposer/eglplatform_hwcomposer.cpp

   1 #include <ws.h>
   2 #include "hwcomposer_window.h"
   3 #include <malloc.h>
   4 #include <assert.h>
   5 #include <fcntl.h>
   6 #include <stdio.h>
   7 #include <sys/stat.h>
   8 #include <unistd.h>
   9 #include <assert.h>
  10 extern "C" {
  11 #include <eglplatformcommon.h>
  12 };
  13
  14 #include "logging.h"
  15
  16 static int inited = 0;
  17 static gralloc_module_t *gralloc = 0;
  18 static alloc_device_t *alloc = 0;
  19 static HWComposerNativeWindow *_nativewindow = NULL;
  20
  21 extern "C" int hwcomposerws_IsValidDisplay(EGLNativeDisplayType display)
  22 {
  23         if (__sync_fetch_and_add(&inited,1)==0)
  24         {
  25                 int err;
  26                 err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, (const hw_module_t **) &gralloc);
  27                 if (gralloc==NULL) {
  28                         fprintf(stderr, "failed to get gralloc module: (%s)\n",strerror(-err));
  29                         assert(0);
  30                 }
  31
  32                 err = gralloc_open((const hw_module_t *) gralloc, &alloc);
  33                 if (err) {
  34                         fprintf(stderr, "ERROR: failed to open gralloc: (%s)\n",strerror(-err));
  35                         assert(0);
  36                 }
  37                 TRACE("** gralloc_open %p status=%s", gralloc, strerror(-err));
  38                 eglplatformcommon_init(gralloc, alloc);
  39         }
  40
  41         return display == EGL_DEFAULT_DISPLAY;
  42 }
  43
  44 extern "C" EGLNativeWindowType hwcomposerws_CreateWindow(EGLNativeWindowType win, EGLNativeDisplayType display)
  45 {
  46         assert (inited >= 1);
  47         assert (_nativewindow == NULL);
  48
  49         HWComposerNativeWindow *window = static_cast<HWComposerNativeWindow *>((ANativeWindow *) win);
  50         window->setup(gralloc, alloc);
  51         _nativewindow = window;
  52         _nativewindow->common.incRef(&_nativewindow->common);
  53         return (EGLNativeWindowType) static_cast<struct ANativeWindow *>(_nativewindow);
  54 }
  55
  56 extern "C" void hwcomposerws_DestroyWindow(EGLNativeWindowType win)
  57 {
  58         assert (_nativewindow != NULL);
  59         assert (static_cast<HWComposerNativeWindow *>((struct ANativeWindow *)win) == _nativewindow);
  60
  61         _nativewindow->common.decRef(&_nativewindow->common);
  62         /* We are done with it, refcounting will delete the window when appropriate */
  63         _nativewindow = NULL;
  64 }
  65
  66 extern "C" __eglMustCastToProperFunctionPointerType hwcomposerws_eglGetProcAddress(const char *procname)
  67 {
  68         return eglplatformcommon_eglGetProcAddress(procname);
  69 }
  70
  71 extern "C" void hwcomposerws_passthroughImageKHR(EGLContext *ctx, EGLenum *target, EGLClientBuffer *buffer, const EGLint **attrib_list)
  72 {
  73         eglplatformcommon_passthroughImageKHR(ctx, target, buffer, attrib_list);
  74 }
  75
  76 struct ws_module ws_module_info = {
  77         hwcomposerws_IsValidDisplay,
  78         hwcomposerws_CreateWindow,
  79         hwcomposerws_DestroyWindow,
  80         hwcomposerws_eglGetProcAddress,
  81         hwcomposerws_passthroughImageKHR,
  82         eglplatformcommon_eglQueryString
  83 };
  84
  85 // vim:ts=4:sw=4:noexpandtab