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/*

 * Mesa 3-D graphics library

 *

 * Copyright (C) 2010-2011 Chia-I Wu 

 * Copyright (C) 2010-2011 LunarG Inc.

 *

 * Based on platform_x11, which has

 *

 * Copyright © 2011 Intel Corporation

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 */

#include 

#include 

#if ANDROID_VERSION >= 0x402

#include 

#endif

/* for droid_get_pci_id */

#include 

#include 

#include 

#include "egl_dri2.h"

#include "gralloc_drm.h"

static int

get_format_bpp(int native)

{

   int bpp;

   switch (native) {

   case HAL_PIXEL_FORMAT_RGBA_8888:

   case HAL_PIXEL_FORMAT_RGBX_8888:

   case HAL_PIXEL_FORMAT_BGRA_8888:

      bpp = 4;

      break;

   case HAL_PIXEL_FORMAT_RGB_888:

      bpp = 3;

      break;

   case HAL_PIXEL_FORMAT_RGB_565:

   case HAL_PIXEL_FORMAT_RGBA_5551:

   case HAL_PIXEL_FORMAT_RGBA_4444:

      bpp = 2;

      break;

   default:

      bpp = 0;

      break;

   }

   return bpp;

}

static int

get_native_buffer_name(struct ANativeWindowBuffer *buf)

{

   return gralloc_drm_get_gem_handle(buf->handle);

}

static EGLBoolean

droid_window_dequeue_buffer(struct dri2_egl_surface *dri2_surf)

{

#if ANDROID_VERSION >= 0x0402

   int fence_fd;

   if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer,

                                        &fence_fd))

      return EGL_FALSE;

   /* If access to the buffer is controlled by a sync fence, then block on the

    * fence.

    *

    * It may be more performant to postpone blocking until there is an

    * immediate need to write to the buffer. But doing so would require adding

    * hooks to the DRI2 loader.

    *

    * From the ANativeWindow::dequeueBuffer documentation:

    *

    *    The libsync fence file descriptor returned in the int pointed to by

    *    the fenceFd argument will refer to the fence that must signal

    *    before the dequeued buffer may be written to.  A value of -1

    *    indicates that the caller may access the buffer immediately without

    *    waiting on a fence.  If a valid file descriptor is returned (i.e.

    *    any value except -1) then the caller is responsible for closing the

    *    file descriptor.

    */

    if (fence_fd >= 0) {

       /* From the SYNC_IOC_WAIT documentation in :

        *

        *    Waits indefinitely if timeout < 0.

        */

        int timeout = -1;

        sync_wait(fence_fd, timeout);

        close(fence_fd);

   }

   dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);

#else

   if (dri2_surf->window->dequeueBuffer(dri2_surf->window, &dri2_surf->buffer))

      return EGL_FALSE;

   dri2_surf->buffer->common.incRef(&dri2_surf->buffer->common);

   dri2_surf->window->lockBuffer(dri2_surf->window, dri2_surf->buffer);

#endif

   return EGL_TRUE;

}

static EGLBoolean

droid_window_enqueue_buffer(struct dri2_egl_surface *dri2_surf)

{

#if ANDROID_VERSION >= 0x0402

   /* Queue the buffer without a sync fence. This informs the ANativeWindow

    * that it may access the buffer immediately.

    *

    * From ANativeWindow::dequeueBuffer:

    *

    *    The fenceFd argument specifies a libsync fence file descriptor for

    *    a fence that must signal before the buffer can be accessed.  If

    *    the buffer can be accessed immediately then a value of -1 should

    *    be used.  The caller must not use the file descriptor after it

    *    is passed to queueBuffer, and the ANativeWindow implementation

    *    is responsible for closing it.

    */

   int fence_fd = -1;

   dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer,

                                  fence_fd);

#else

   dri2_surf->window->queueBuffer(dri2_surf->window, dri2_surf->buffer);

#endif

   dri2_surf->buffer->common.decRef(&dri2_surf->buffer->common);

   dri2_surf->buffer = NULL;

   return EGL_TRUE;

}

static void

droid_window_cancel_buffer(struct dri2_egl_surface *dri2_surf)

{

   /* no cancel buffer? */

   droid_window_enqueue_buffer(dri2_surf);

}

static __DRIbuffer *

droid_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,

                         unsigned int att, unsigned int format)

{

   struct dri2_egl_display *dri2_dpy =

      dri2_egl_display(dri2_surf->base.Resource.Display);

   if (att >= ARRAY_SIZE(dri2_surf->local_buffers))

      return NULL;

   if (!dri2_surf->local_buffers[att]) {

      dri2_surf->local_buffers[att] =

         dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,

               dri2_surf->base.Width, dri2_surf->base.Height);

   }

   return dri2_surf->local_buffers[att];

}

static void

droid_free_local_buffers(struct dri2_egl_surface *dri2_surf)

{

   struct dri2_egl_display *dri2_dpy =

      dri2_egl_display(dri2_surf->base.Resource.Display);

   int i;

   for (i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {

      if (dri2_surf->local_buffers[i]) {

         dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,

               dri2_surf->local_buffers[i]);

         dri2_surf->local_buffers[i] = NULL;

      }

   }

}

static _EGLSurface *

droid_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,

		    _EGLConfig *conf, EGLNativeWindowType window,

		    const EGLint *attrib_list)

{

   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);

   struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);

   struct dri2_egl_surface *dri2_surf;

   dri2_surf = calloc(1, sizeof *dri2_surf);

   if (!dri2_surf) {

      _eglError(EGL_BAD_ALLOC, "droid_create_surface");

      return NULL;

   }

   if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))

      goto cleanup_surface;

   if (type == EGL_WINDOW_BIT) {

      int format;

      if (!window || window->common.magic != ANDROID_NATIVE_WINDOW_MAGIC) {

         _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");

         goto cleanup_surface;

      }

      if (window->query(window, NATIVE_WINDOW_FORMAT, &format)) {

         _eglError(EGL_BAD_NATIVE_WINDOW, "droid_create_surface");

         goto cleanup_surface;

      }

      if (format != dri2_conf->base.NativeVisualID) {

         _eglLog(_EGL_WARNING, "Native format mismatch: 0x%x != 0x%x",

               format, dri2_conf->base.NativeVisualID);

      }

      window->query(window, NATIVE_WINDOW_WIDTH, &dri2_surf->base.Width);

      window->query(window, NATIVE_WINDOW_HEIGHT, &dri2_surf->base.Height);

   }

   dri2_surf->dri_drawable =

      (*dri2_dpy->dri2->createNewDrawable)(dri2_dpy->dri_screen,

					   dri2_conf->dri_double_config,

                                           dri2_surf);

   if (dri2_surf->dri_drawable == NULL) {

      _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");

      goto cleanup_surface;

   }

   if (window) {

      window->common.incRef(&window->common);

      dri2_surf->window = window;

   }

   return &dri2_surf->base;

cleanup_surface:

   free(dri2_surf);

   return NULL;

}

static _EGLSurface *

droid_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,

			   _EGLConfig *conf, EGLNativeWindowType window,

			   const EGLint *attrib_list)

{

   return droid_create_surface(drv, disp, EGL_WINDOW_BIT, conf,

			      window, attrib_list);

}

static _EGLSurface *

droid_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,

			   _EGLConfig *conf, EGLNativePixmapType pixmap,

			   const EGLint *attrib_list)

{

   return NULL;

}

static _EGLSurface *

droid_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,

			    _EGLConfig *conf, const EGLint *attrib_list)

{

   return droid_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,

			      NULL, attrib_list);

}

static EGLBoolean

droid_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)

{

   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);

   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);

   if (!_eglPutSurface(surf))

      return EGL_TRUE;

   droid_free_local_buffers(dri2_surf);

   if (dri2_surf->base.Type == EGL_WINDOW_BIT) {

      if (dri2_surf->buffer)

         droid_window_cancel_buffer(dri2_surf);

      dri2_surf->window->common.decRef(&dri2_surf->window->common);

   }

   (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);

   free(dri2_surf);

   return EGL_TRUE;

}

static EGLBoolean

droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)

{

   struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);

   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);

   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);

   _EGLContext *ctx;

   if (dri2_surf->base.Type != EGL_WINDOW_BIT)

      return EGL_TRUE;

   if (dri2_drv->glFlush) {

      ctx = _eglGetCurrentContext();

      if (ctx && ctx->DrawSurface == &dri2_surf->base)

         dri2_drv->glFlush();

   }

   (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);

   if (dri2_surf->buffer)

      droid_window_enqueue_buffer(dri2_surf);

   (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);

   return EGL_TRUE;

}

static _EGLImage *

dri2_create_image_android_native_buffer(_EGLDisplay *disp, _EGLContext *ctx,

                                        struct ANativeWindowBuffer *buf)

{

   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);

   struct dri2_egl_image *dri2_img;

   int name;

   EGLint format;

   if (ctx != NULL) {

      /* From the EGL_ANDROID_image_native_buffer spec:

       *

       *     * If  is EGL_NATIVE_BUFFER_ANDROID and  is not

       *       EGL_NO_CONTEXT, the error EGL_BAD_CONTEXT is generated.

       */

      _eglError(EGL_BAD_CONTEXT, "eglCreateEGLImageKHR: for "

                "EGL_NATIVE_BUFFER_ANDROID, the context must be "

                "EGL_NO_CONTEXT");

      return NULL;

   }

   if (!buf || buf->common.magic != ANDROID_NATIVE_BUFFER_MAGIC ||

       buf->common.version != sizeof(*buf)) {

      _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");

      return NULL;

   }

   name = get_native_buffer_name(buf);

   if (!name) {

      _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");

      return NULL;

   }

   /* see the table in droid_add_configs_for_visuals */

   switch (buf->format) {

   case HAL_PIXEL_FORMAT_BGRA_8888:

      format = __DRI_IMAGE_FORMAT_ARGB8888;

      break;

   case HAL_PIXEL_FORMAT_RGB_565:

      format = __DRI_IMAGE_FORMAT_RGB565;

      break;

   case HAL_PIXEL_FORMAT_RGBA_8888:

      format = __DRI_IMAGE_FORMAT_ABGR8888;

      break;

   case HAL_PIXEL_FORMAT_RGBX_8888:

      format = __DRI_IMAGE_FORMAT_XBGR8888;

      break;

   case HAL_PIXEL_FORMAT_RGB_888:

   case HAL_PIXEL_FORMAT_RGBA_5551:

   case HAL_PIXEL_FORMAT_RGBA_4444:

      /* unsupported */

   default:

      _eglLog(_EGL_WARNING, "unsupported native buffer format 0x%x", buf->format);

      return NULL;

      break;

   }

   dri2_img = calloc(1, sizeof(*dri2_img));

   if (!dri2_img) {

      _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");

      return NULL;

   }

   if (!_eglInitImage(&dri2_img->base, disp)) {

      free(dri2_img);

      return NULL;

   }

   dri2_img->dri_image =

      dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,

					   buf->width,

					   buf->height,

					   format,

					   name,

					   buf->stride,

					   dri2_img);

   if (!dri2_img->dri_image) {

      free(dri2_img);

      _eglError(EGL_BAD_ALLOC, "droid_create_image_mesa_drm");

      return NULL;

   }

   return &dri2_img->base;

}

static _EGLImage *

droid_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,

		       _EGLContext *ctx, EGLenum target,

		       EGLClientBuffer buffer, const EGLint *attr_list)

{

   switch (target) {

   case EGL_NATIVE_BUFFER_ANDROID:

      return dri2_create_image_android_native_buffer(disp, ctx,

            (struct ANativeWindowBuffer *) buffer);

   default:

      return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);

   }

}

static void

droid_init_driver_functions(_EGLDriver *drv)

{

   drv->API.CreateWindowSurface = droid_create_window_surface;

   drv->API.CreatePixmapSurface = droid_create_pixmap_surface;

   drv->API.CreatePbufferSurface = droid_create_pbuffer_surface;

   drv->API.DestroySurface = droid_destroy_surface;

   drv->API.SwapBuffers = droid_swap_buffers;

   drv->API.CreateImageKHR = droid_create_image_khr;

}

static void

droid_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)

{

}

static int

droid_get_buffers_parse_attachments(struct dri2_egl_surface *dri2_surf,

                                    unsigned int *attachments, int count)

{

   int num_buffers = 0, i;

   /* fill dri2_surf->buffers */

   for (i = 0; i < count * 2; i += 2) {

      __DRIbuffer *buf, *local;

      assert(num_buffers < ARRAY_SIZE(dri2_surf->buffers));

      buf = &dri2_surf->buffers[num_buffers];

      switch (attachments[i]) {

      case __DRI_BUFFER_BACK_LEFT:

         if (dri2_surf->base.Type == EGL_WINDOW_BIT) {

            buf->attachment = attachments[i];

            buf->name = get_native_buffer_name(dri2_surf->buffer);

            buf->cpp = get_format_bpp(dri2_surf->buffer->format);

            buf->pitch = dri2_surf->buffer->stride * buf->cpp;

            buf->flags = 0;

            if (buf->name)

               num_buffers++;

            break;

         }

         /* fall through for pbuffers */

      case __DRI_BUFFER_DEPTH:

      case __DRI_BUFFER_STENCIL:

      case __DRI_BUFFER_ACCUM:

      case __DRI_BUFFER_DEPTH_STENCIL:

      case __DRI_BUFFER_HIZ:

         local = droid_alloc_local_buffer(dri2_surf,

               attachments[i], attachments[i + 1]);

         if (local) {

            *buf = *local;

            num_buffers++;

         }

         break;

      case __DRI_BUFFER_FRONT_LEFT:

      case __DRI_BUFFER_FRONT_RIGHT:

      case __DRI_BUFFER_FAKE_FRONT_LEFT:

      case __DRI_BUFFER_FAKE_FRONT_RIGHT:

      case __DRI_BUFFER_BACK_RIGHT:

      default:

         /* no front or right buffers */

         break;

      }

   }

   return num_buffers;

}

static __DRIbuffer *

droid_get_buffers_with_format(__DRIdrawable * driDrawable,

			     int *width, int *height,

			     unsigned int *attachments, int count,

			     int *out_count, void *loaderPrivate)

{

   struct dri2_egl_surface *dri2_surf = loaderPrivate;

   struct dri2_egl_display *dri2_dpy =

      dri2_egl_display(dri2_surf->base.Resource.Display);

   int i;

   if (dri2_surf->base.Type == EGL_WINDOW_BIT) {

      /* try to dequeue the next back buffer */

      if (!dri2_surf->buffer && !droid_window_dequeue_buffer(dri2_surf))

         return NULL;

      /* free outdated buffers and update the surface size */

      if (dri2_surf->base.Width != dri2_surf->buffer->width ||

          dri2_surf->base.Height != dri2_surf->buffer->height) {

         droid_free_local_buffers(dri2_surf);

         dri2_surf->base.Width = dri2_surf->buffer->width;

         dri2_surf->base.Height = dri2_surf->buffer->height;

      }

   }

   dri2_surf->buffer_count =

      droid_get_buffers_parse_attachments(dri2_surf, attachments, count);

   if (width)

      *width = dri2_surf->base.Width;

   if (height)

      *height = dri2_surf->base.Height;

   *out_count = dri2_surf->buffer_count;;

   return dri2_surf->buffers;

}

static EGLBoolean

droid_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *dpy)

{

   struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);

   const struct {

      int format;

      int size;

      unsigned int rgba_masks[4];

   } visuals[] = {

      { HAL_PIXEL_FORMAT_RGBA_8888, 32, { 0xff, 0xff00, 0xff0000, 0xff000000 } },

      { HAL_PIXEL_FORMAT_RGBX_8888, 32, { 0xff, 0xff00, 0xff0000, 0x0 } },

      { HAL_PIXEL_FORMAT_RGB_888,   24, { 0xff, 0xff00, 0xff0000, 0x0 } },

      { HAL_PIXEL_FORMAT_RGB_565,   16, { 0xf800, 0x7e0, 0x1f, 0x0 } },

      { HAL_PIXEL_FORMAT_BGRA_8888, 32, { 0xff0000, 0xff00, 0xff, 0xff000000 } },

      { 0, 0, { 0, 0, 0, 0 } }

   };

   int count, i, j;

   count = 0;

   for (i = 0; visuals[i].format; i++) {

      int format_count = 0;

      for (j = 0; dri2_dpy->driver_configs[j]; j++) {

         const EGLint surface_type = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;

         struct dri2_egl_config *dri2_conf;

         unsigned int double_buffered = 0;

         dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[j],

            __DRI_ATTRIB_DOUBLE_BUFFER, &double_buffered);

         /* support only double buffered configs */

         if (!double_buffered)

            continue;

         dri2_conf = dri2_add_config(dpy, dri2_dpy->driver_configs[j],

               count + 1, visuals[i].size, surface_type, NULL,

               visuals[i].rgba_masks);

         if (dri2_conf) {

            dri2_conf->base.NativeVisualID = visuals[i].format;

            dri2_conf->base.NativeVisualType = visuals[i].format;

            count++;

            format_count++;

         }

      }

      if (!format_count) {

         _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x",

               visuals[i].format);

      }

   }

   /* post-process configs */

   for (i = 0; i < dpy->Configs->Size; i++) {

      struct dri2_egl_config *dri2_conf = dri2_egl_config(dpy->Configs->Elements[i]);

      /* there is no front buffer so no OpenGL */

      dri2_conf->base.RenderableType &= ~EGL_OPENGL_BIT;

      dri2_conf->base.Conformant &= ~EGL_OPENGL_BIT;

   }

   return (count != 0);

}

static EGLBoolean

droid_get_pci_id(int fd, int *vendor_id, int *chip_id)

{

   drmVersionPtr version;

   *chip_id = -1;

   version = drmGetVersion(fd);

   if (!version) {

      _eglLog(_EGL_WARNING, "invalid drm fd");

      return EGL_FALSE;

   }

   if (!version->name) {

      _eglLog(_EGL_WARNING, "unable to determine the driver name");

      drmFreeVersion(version);

      return EGL_FALSE;

   }

   if (strcmp(version->name, "i915") == 0) {

      struct drm_i915_getparam gp;

      int ret;

      *vendor_id = 0x8086;

      memset(&gp, 0, sizeof(gp));

      gp.param = I915_PARAM_CHIPSET_ID;

      gp.value = chip_id;

      ret = drmCommandWriteRead(fd, DRM_I915_GETPARAM, &gp, sizeof(gp));

      if (ret) {

         _eglLog(_EGL_WARNING, "failed to get param for i915");

	 *chip_id = -1;

      }

   }

   else if (strcmp(version->name, "radeon") == 0) {

      struct drm_radeon_info info;

      int ret;

      *vendor_id = 0x1002;

      memset(&info, 0, sizeof(info));

      info.request = RADEON_INFO_DEVICE_ID;

      info.value = (unsigned long) chip_id;

      ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));

      if (ret) {

         _eglLog(_EGL_WARNING, "failed to get info for radeon");

	 *chip_id = -1;

      }

   }

   else if (strcmp(version->name, "nouveau") == 0) {

      *vendor_id = 0x10de;

      /* not used */

      *chip_id = 0;

   }

   else if (strcmp(version->name, "vmwgfx") == 0) {

      *vendor_id = 0x15ad;

      /* assume SVGA II */

      *chip_id = 0x0405;

   }

   drmFreeVersion(version);

   return (*chip_id >= 0);

}

#define DRIVER_MAP_DRI2_ONLY

#include "pci_ids/pci_id_driver_map.h"

static const char *

droid_get_driver_name(int fd)

{

   int vendor_id = -1, chip_id = -1;

   int idx, i;

   char *name;

   if (!droid_get_pci_id(fd, &vendor_id, &chip_id))

      return NULL;

   for (idx = 0; driver_map[idx].driver; idx++) {

      if (vendor_id != driver_map[idx].vendor_id)

         continue;

      if (driver_map[idx].num_chips_ids == -1)

         break;

      for (i = 0; i < driver_map[idx].num_chips_ids; i++) {

         if (driver_map[idx].chip_ids[i] == chip_id)

            break;

      }

      if (i < driver_map[idx].num_chips_ids)

	      break;

   }

   _eglLog(_EGL_INFO, "pci id for fd %d: %04x:%04x, driver %s",

         fd, vendor_id, chip_id, driver_map[idx].driver);

   return driver_map[idx].driver;

}

static int

droid_open_device(void)

{

   const hw_module_t *mod;

   int fd = -1, err;

   err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &mod);

   if (!err) {

      const gralloc_module_t *gr = (gralloc_module_t *) mod;

      err = -EINVAL;

      if (gr->perform)

         err = gr->perform(gr, GRALLOC_MODULE_PERFORM_GET_DRM_FD, &fd);

   }

   if (err || fd < 0) {

      _eglLog(_EGL_WARNING, "fail to get drm fd");

      fd = -1;

   }

   return (fd >= 0) ? dup(fd) : -1;

}

/* support versions < JellyBean */

#ifndef ALOGW

#define ALOGW LOGW

#endif

#ifndef ALOGD

#define ALOGD LOGD

#endif

#ifndef ALOGI

#define ALOGI LOGI

#endif

static void

droid_log(EGLint level, const char *msg)

{

   switch (level) {

   case _EGL_DEBUG:

      ALOGD("%s", msg);

      break;

   case _EGL_INFO:

      ALOGI("%s", msg);

      break;

   case _EGL_WARNING:

      ALOGW("%s", msg);

      break;

   case _EGL_FATAL:

      LOG_FATAL("%s", msg);

      break;

   default:

      break;

   }

}

EGLBoolean

dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)

{

   struct dri2_egl_display *dri2_dpy;

   const char *err;

   _eglSetLogProc(droid_log);

   dri2_dpy = calloc(1, sizeof(*dri2_dpy));

   if (!dri2_dpy)

      return _eglError(EGL_BAD_ALLOC, "eglInitialize");

   dpy->DriverData = (void *) dri2_dpy;

   dri2_dpy->fd = droid_open_device();

   if (dri2_dpy->fd < 0) {

      err = "DRI2: failed to open device";

      goto cleanup_display;

   }

   dri2_dpy->driver_name = (char *) droid_get_driver_name(dri2_dpy->fd);

   if (dri2_dpy->driver_name == NULL) {

      err = "DRI2: failed to get driver name";

      goto cleanup_device;

   }

   if (!dri2_load_driver(dpy)) {

      err = "DRI2: failed to load driver";

      goto cleanup_device;

   }

   dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;

   dri2_dpy->dri2_loader_extension.base.version = 3;

   dri2_dpy->dri2_loader_extension.getBuffers = NULL;

   dri2_dpy->dri2_loader_extension.flushFrontBuffer = droid_flush_front_buffer;

   dri2_dpy->dri2_loader_extension.getBuffersWithFormat =

      droid_get_buffers_with_format;

   dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;

   dri2_dpy->extensions[1] = &image_lookup_extension.base;

   dri2_dpy->extensions[2] = &use_invalidate.base;

   dri2_dpy->extensions[3] = NULL;

   if (!dri2_create_screen(dpy)) {

      err = "DRI2: failed to create screen";

      goto cleanup_driver;

   }

   if (!droid_add_configs_for_visuals(drv, dpy)) {

      err = "DRI2: failed to add configs";

      goto cleanup_screen;

   }

   dpy->Extensions.ANDROID_image_native_buffer = EGL_TRUE;

   dpy->Extensions.KHR_image_base = EGL_TRUE;

   /* we're supporting EGL 1.4 */

   dpy->VersionMajor = 1;

   dpy->VersionMinor = 4;

   droid_init_driver_functions(drv);

   return EGL_TRUE;

cleanup_screen:

   dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);

cleanup_driver:

   dlclose(dri2_dpy->driver);

cleanup_device:

   close(dri2_dpy->fd);

cleanup_display:

   free(dri2_dpy);

   return _eglError(EGL_NOT_INITIALIZED, err);

}