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/*

 * Mesa 3-D graphics library

 *

 * Copyright (C) 2011 Benjamin Franzke 

 *

 * 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 "util/u_memory.h"

#include "util/u_inlines.h"

#include "pipe/p_compiler.h"

#include "pipe/p_screen.h"

#include "pipe/p_context.h"

#include "pipe/p_state.h"

#include "state_tracker/drm_driver.h"

#include "egllog.h"

#include 

#include "native_wayland.h"

#include 

#include "wayland-drm-client-protocol.h"

#include "wayland-egl-priv.h"

#include "common/native_wayland_drm_bufmgr_helper.h"

#include 

#include 

#include 

#include 

struct wayland_drm_display {

   struct wayland_display base;

   const struct native_event_handler *event_handler;

   struct wl_drm *wl_drm;

   struct wl_drm *wl_server_drm; /* for EGL_WL_bind_wayland_display */

   int fd;

   char *device_name;

   boolean authenticated;

};

static INLINE struct wayland_drm_display *

wayland_drm_display(const struct native_display *ndpy)

{

   return (struct wayland_drm_display *) ndpy;

}

static void

wayland_drm_display_destroy(struct native_display *ndpy)

{

   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);

   if (drmdpy->wl_drm)

      wl_drm_destroy(drmdpy->wl_drm);

   FREE(drmdpy->device_name);

   FREE(drmdpy->base.configs);

   if (drmdpy->base.own_dpy)

      wl_display_disconnect(drmdpy->base.dpy);

   ndpy_uninit(ndpy);

   if (drmdpy->fd)

      close(drmdpy->fd);

   FREE(drmdpy);

}

static struct wl_buffer *

wayland_create_drm_buffer(struct wayland_display *display,

                          struct wayland_surface *surface,

                          enum native_attachment attachment)

{

   struct wayland_drm_display *drmdpy = (struct wayland_drm_display *) display;

   struct pipe_screen *screen = drmdpy->base.base.screen;

   struct pipe_resource *resource;

   struct winsys_handle wsh;

   uint width, height;

   enum wl_drm_format format;

   resource = resource_surface_get_single_resource(surface->rsurf, attachment);

   resource_surface_get_size(surface->rsurf, &width, &height);

   wsh.type = DRM_API_HANDLE_TYPE_SHARED;

   screen->resource_get_handle(screen, resource, &wsh);

   pipe_resource_reference(&resource, NULL);

   switch (surface->color_format) {

   case PIPE_FORMAT_B8G8R8A8_UNORM:

      format = WL_DRM_FORMAT_ARGB8888;

      break;

   case PIPE_FORMAT_B8G8R8X8_UNORM:

      format = WL_DRM_FORMAT_XRGB8888;

      break;

   default:

      return NULL;

      break;

   }

   return wl_drm_create_buffer(drmdpy->wl_drm, wsh.handle,

                               width, height, wsh.stride, format);

}

static void

drm_handle_device(void *data, struct wl_drm *drm, const char *device)

{

   struct wayland_drm_display *drmdpy = data;

   drm_magic_t magic;

   drmdpy->device_name = strdup(device);

   if (!drmdpy->device_name)

      return;

#ifdef O_CLOEXEC

   drmdpy->fd = open(drmdpy->device_name, O_RDWR | O_CLOEXEC);

   if (drmdpy->fd == -1 && errno == EINVAL)

#endif

   {

      drmdpy->fd = open(drmdpy->device_name, O_RDWR);

      if (drmdpy->fd != -1)

         fcntl(drmdpy->fd, F_SETFD, fcntl(drmdpy->fd, F_GETFD) | FD_CLOEXEC);

   }

   if (drmdpy->fd == -1) {

      _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",

              drmdpy->device_name, strerror(errno));

      return;

   }

   drmGetMagic(drmdpy->fd, &magic);

   wl_drm_authenticate(drmdpy->wl_drm, magic);

}

static void

drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)

{

   struct wayland_drm_display *drmdpy = data;

   switch (format) {

   case WL_DRM_FORMAT_ARGB8888:

      drmdpy->base.formats |= HAS_ARGB8888;

      break;

   case WL_DRM_FORMAT_XRGB8888:

      drmdpy->base.formats |= HAS_XRGB8888;

      break;

   }

}

static void

drm_handle_authenticated(void *data, struct wl_drm *drm)

{

   struct wayland_drm_display *drmdpy = data;

   drmdpy->authenticated = true;

}

static const struct wl_drm_listener drm_listener = {

   drm_handle_device,

   drm_handle_format,

   drm_handle_authenticated

};

static void

registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,

                       const char *interface, uint32_t version)

{

   struct wayland_drm_display *drmdpy = data;

   if (strcmp(interface, "wl_drm") == 0) {

      drmdpy->wl_drm = wl_registry_bind(registry, name, &wl_drm_interface, 1);

      wl_drm_add_listener(drmdpy->wl_drm, &drm_listener, drmdpy);

   }

}

static const struct wl_registry_listener registry_listener = {

       registry_handle_global

};

static boolean

wayland_drm_display_init_screen(struct native_display *ndpy)

{

   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);

   drmdpy->base.queue = wl_display_create_queue(drmdpy->base.dpy);

   drmdpy->base.registry = wl_display_get_registry(drmdpy->base.dpy);

   wl_proxy_set_queue((struct wl_proxy *) drmdpy->base.registry,

                      drmdpy->base.queue);

   wl_registry_add_listener(drmdpy->base.registry, ®istry_listener, drmdpy);

   if (wayland_roundtrip(&drmdpy->base) < 0 || drmdpy->wl_drm == NULL)

      return FALSE;

   wl_drm_add_listener(drmdpy->wl_drm, &drm_listener, drmdpy);

   if (wayland_roundtrip(&drmdpy->base) < 0 || drmdpy->fd == -1)

      return FALSE;

   if (wayland_roundtrip(&drmdpy->base) < 0 || !drmdpy->authenticated)

      return FALSE;

   if (drmdpy->base.formats == 0)

      return FALSE;

   drmdpy->base.base.screen =

      drmdpy->event_handler->new_drm_screen(&drmdpy->base.base,

                                            NULL, drmdpy->fd);

   if (!drmdpy->base.base.screen) {

      _eglLog(_EGL_WARNING, "failed to create DRM screen");

      return FALSE;

   }

   return TRUE;

}

static struct native_display_buffer wayland_drm_display_buffer = {

   /* use the helpers */

   drm_display_import_native_buffer,

   drm_display_export_native_buffer

};

static int

wayland_drm_display_authenticate(void *user_data, uint32_t magic)

{

   struct native_display *ndpy = user_data;

   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);

   boolean current_authenticate, authenticated;

   current_authenticate = drmdpy->authenticated;

   wl_drm_authenticate(drmdpy->wl_drm, magic);

   wl_display_roundtrip(drmdpy->base.dpy);

   authenticated = drmdpy->authenticated;

   drmdpy->authenticated = current_authenticate;

   return authenticated ? 0 : -1;

}

static struct wayland_drm_callbacks wl_drm_callbacks = {

   wayland_drm_display_authenticate,

   egl_g3d_wl_drm_helper_reference_buffer,

   egl_g3d_wl_drm_helper_unreference_buffer

};

static boolean

wayland_drm_display_bind_wayland_display(struct native_display *ndpy,

                                         struct wl_display *wl_dpy)

{

   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);

   if (drmdpy->wl_server_drm)

      return FALSE;

   ndpy->wl_server_drm =

      wayland_drm_init(wl_dpy, drmdpy->device_name,

                       &wl_drm_callbacks, ndpy, 0);

   if (!drmdpy->wl_server_drm)

      return FALSE;

   return TRUE;

}

static boolean

wayland_drm_display_unbind_wayland_display(struct native_display *ndpy,

                                           struct wl_display *wl_dpy)

{

   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);

   if (!drmdpy->wl_server_drm)

      return FALSE;

   wayland_drm_uninit(drmdpy->wl_server_drm);

   drmdpy->wl_server_drm = NULL;

   return TRUE;

}

static struct native_display_wayland_bufmgr wayland_drm_display_wayland_bufmgr = {

   wayland_drm_display_bind_wayland_display,

   wayland_drm_display_unbind_wayland_display,

   egl_g3d_wl_drm_common_wl_buffer_get_resource,

   egl_g3d_wl_drm_common_query_buffer

};

struct wayland_display *

wayland_create_drm_display(struct wl_display *dpy,

                           const struct native_event_handler *event_handler)

{

   struct wayland_drm_display *drmdpy;

   drmdpy = CALLOC_STRUCT(wayland_drm_display);

   if (!drmdpy)

      return NULL;

   drmdpy->event_handler = event_handler;

   drmdpy->base.dpy = dpy;

   if (!drmdpy->base.dpy) {

      wayland_drm_display_destroy(&drmdpy->base.base);

      return NULL;

   }

   drmdpy->base.base.init_screen = wayland_drm_display_init_screen;

   drmdpy->base.base.destroy = wayland_drm_display_destroy;

   drmdpy->base.base.buffer = &wayland_drm_display_buffer;

   drmdpy->base.base.wayland_bufmgr = &wayland_drm_display_wayland_bufmgr;

   drmdpy->base.create_buffer = wayland_create_drm_buffer;

   return &drmdpy->base;

}

/* vim: set sw=3 ts=8 sts=3 expandtab: */