Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 252 insertions, 0 deletions

diff --git a/grub-core/video/emu/sdl.c b/grub-core/video/emu/sdl.c
new file mode 100644
index 0000000..0ebab6f
--- /dev/null
+++ b/grub-core/video/emu/sdl.c
@@ -0,0 +1,252 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2005,2006,2007,2008,2009  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define grub_video_render_target grub_video_fbrender_target
+
+#include <grub/err.h>
+#include <grub/types.h>
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/video.h>
+#include <grub/video_fb.h>
+#include <SDL/SDL.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+static SDL_Surface *window = 0;
+static struct grub_video_render_target *sdl_render_target;
+static struct grub_video_mode_info mode_info;
+
+static grub_err_t
+grub_video_sdl_set_palette (unsigned int start, unsigned int count,
+                            struct grub_video_palette_data *palette_data);
+
+static grub_err_t
+grub_video_sdl_init (void)
+{
+  window = 0;
+
+  if (SDL_Init (SDL_INIT_VIDEO) < 0)
+    return grub_error (GRUB_ERR_BAD_DEVICE, "Couldn't init SDL: %s",
+		       SDL_GetError ());
+
+  grub_memset (&mode_info, 0, sizeof (mode_info));
+
+  return grub_video_fb_init ();
+}
+
+static grub_err_t
+grub_video_sdl_fini (void)
+{
+  SDL_Quit ();
+  window = 0;
+
+  grub_memset (&mode_info, 0, sizeof (mode_info));
+
+  return grub_video_fb_fini ();
+}
+
+static inline unsigned int
+get_mask_size (grub_uint32_t mask)
+{
+  unsigned i;
+  for (i = 0; mask > 1U << i; i++);
+  return i;
+}
+
+static grub_err_t
+grub_video_sdl_setup (unsigned int width, unsigned int height,
+                      unsigned int mode_type, unsigned int mode_mask)
+{
+  int depth;
+  int flags = 0;
+  grub_err_t err;
+
+  /* Decode depth from mode_type.  If it is zero, then autodetect.  */
+  depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)
+          >> GRUB_VIDEO_MODE_TYPE_DEPTH_POS;
+
+  if (depth == 0)
+    depth = 32;
+
+  if (width == 0 && height == 0)
+    {
+      width = 800;
+      height = 600;
+    }
+
+  if ((mode_type & GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED)
+      || !(mode_mask & GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED))
+    flags |= SDL_DOUBLEBUF;
+
+  window = SDL_SetVideoMode (width, height, depth, flags | SDL_HWSURFACE);
+  if (! window)
+    window = SDL_SetVideoMode (width, height, depth, flags | SDL_SWSURFACE);
+  if (! window)
+    return grub_error (GRUB_ERR_BAD_DEVICE, "Couldn't open window: %s",
+		       SDL_GetError ());
+
+  grub_memset (&sdl_render_target, 0, sizeof (sdl_render_target));
+
+  mode_info.width = window->w;
+  mode_info.height = window->h;
+  mode_info.mode_type = 0;
+  if (window->flags & SDL_DOUBLEBUF)
+    mode_info.mode_type
+      |= GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED;
+  if (window->format->palette)
+    mode_info.mode_type |= GRUB_VIDEO_MODE_TYPE_INDEX_COLOR;
+  else
+    mode_info.mode_type |= GRUB_VIDEO_MODE_TYPE_RGB;
+
+  mode_info.bpp = window->format->BitsPerPixel;
+  mode_info.bytes_per_pixel = window->format->BytesPerPixel;
+  mode_info.pitch = window->pitch;
+
+  /* In index color mode, number of colors.  In RGB mode this is 256.  */
+  if (window->format->palette)
+    mode_info.number_of_colors
+      = 1 << window->format->BitsPerPixel;
+  else
+    mode_info.number_of_colors = 256;
+
+  if (! window->format->palette)
+    {
+      mode_info.red_mask_size
+	= get_mask_size (window->format->Rmask >> window->format->Rshift);
+      mode_info.red_field_pos = window->format->Rshift;
+      mode_info.green_mask_size
+	= get_mask_size (window->format->Gmask >> window->format->Gshift);
+      mode_info.green_field_pos = window->format->Gshift;
+      mode_info.blue_mask_size
+	= get_mask_size (window->format->Bmask >> window->format->Bshift);
+      mode_info.blue_field_pos = window->format->Bshift;
+      mode_info.reserved_mask_size
+	= get_mask_size (window->format->Amask >> window->format->Ashift);
+      mode_info.reserved_field_pos = window->format->Ashift;
+      mode_info.blit_format
+	= grub_video_get_blit_format (&mode_info);
+    }
+
+  err = grub_video_fb_create_render_target_from_pointer (&sdl_render_target,
+							 &mode_info,
+							 window->pixels);
+  if (err)
+    return err;
+
+  /* Copy default palette to initialize emulated palette.  */
+  grub_video_sdl_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
+			      grub_video_fbstd_colors);
+
+  /* Reset render target to SDL one.  */
+  return grub_video_fb_set_active_render_target (sdl_render_target);
+}
+
+static grub_err_t
+grub_video_sdl_set_palette (unsigned int start, unsigned int count,
+                            struct grub_video_palette_data *palette_data)
+{
+  unsigned i;
+  if (window->format->palette)
+    {
+      SDL_Color *tmp;
+      if (start >= mode_info.number_of_colors)
+	return GRUB_ERR_NONE;
+
+      if (start + count > mode_info.number_of_colors)
+	count = mode_info.number_of_colors - start;
+
+      tmp = grub_calloc (count, sizeof (tmp[0]));
+      for (i = 0; i < count; i++)
+	{
+	  tmp[i].r = palette_data[i].r;
+	  tmp[i].g = palette_data[i].g;
+	  tmp[i].b = palette_data[i].b;
+	  tmp[i].unused = palette_data[i].a;
+	}
+      SDL_SetColors (window, tmp, start, count);
+      grub_free (tmp);
+    }
+
+  return grub_video_fb_set_palette (start, count, palette_data);
+}
+
+static grub_err_t
+grub_video_sdl_swap_buffers (void)
+{
+  if (SDL_Flip (window) < 0)
+    return grub_error (GRUB_ERR_BAD_DEVICE, "couldn't swap buffers: %s",
+		       SDL_GetError ());
+  return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_video_sdl_set_active_render_target (struct grub_video_render_target *target)
+{
+  if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
+    return grub_video_fb_set_active_render_target (sdl_render_target);
+
+  return grub_video_fb_set_active_render_target (target);
+}
+
+static struct grub_video_adapter grub_video_sdl_adapter =
+  {
+    .name = "SDL Video Driver",
+    .id = GRUB_VIDEO_DRIVER_SDL,
+
+    .prio = GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE,
+
+    .init = grub_video_sdl_init,
+    .fini = grub_video_sdl_fini,
+    .setup = grub_video_sdl_setup,
+    .get_info = grub_video_fb_get_info,
+    .set_palette = grub_video_sdl_set_palette,
+    .get_palette = grub_video_fb_get_palette,
+    .set_viewport = grub_video_fb_set_viewport,
+    .get_viewport = grub_video_fb_get_viewport,
+    .set_region = grub_video_fb_set_region,
+    .get_region = grub_video_fb_get_region,
+    .set_area_status = grub_video_fb_set_area_status,
+    .get_area_status = grub_video_fb_get_area_status,
+    .map_color = grub_video_fb_map_color,
+    .map_rgb = grub_video_fb_map_rgb,
+    .map_rgba = grub_video_fb_map_rgba,
+    .unmap_color = grub_video_fb_unmap_color,
+    .fill_rect = grub_video_fb_fill_rect,
+    .blit_bitmap = grub_video_fb_blit_bitmap,
+    .blit_render_target = grub_video_fb_blit_render_target,
+    .scroll = grub_video_fb_scroll,
+    .swap_buffers = grub_video_sdl_swap_buffers,
+    .create_render_target = grub_video_fb_create_render_target,
+    .delete_render_target = grub_video_fb_delete_render_target,
+    .set_active_render_target = grub_video_sdl_set_active_render_target,
+    .get_active_render_target = grub_video_fb_get_active_render_target,
+
+    .next = 0
+  };
+
+GRUB_MOD_INIT(sdl)
+{
+  grub_video_register (&grub_video_sdl_adapter);
+}
+
+GRUB_MOD_FINI(sdl)
+{
+  grub_video_unregister (&grub_video_sdl_adapter);
+}