2N/A/*
2N/A * GRUB -- GRand Unified Bootloader
2N/A * Copyright (C) 2005,2006,2007,2008,2009 Free Software Foundation, Inc.
2N/A *
2N/A * GRUB is free software: you can redistribute it and/or modify
2N/A * it under the terms of the GNU General Public License as published by
2N/A * the Free Software Foundation, either version 3 of the License, or
2N/A * (at your option) any later version.
2N/A *
2N/A * GRUB is distributed in the hope that it will be useful,
2N/A * but WITHOUT ANY WARRANTY; without even the implied warranty of
2N/A * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2N/A * GNU General Public License for more details.
2N/A *
2N/A * You should have received a copy of the GNU General Public License
2N/A * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
2N/A */
2N/A
2N/A#define grub_video_render_target grub_video_fbrender_target
2N/A
2N/A#include <grub/err.h>
2N/A#include <grub/types.h>
2N/A#include <grub/dl.h>
2N/A#include <grub/misc.h>
2N/A#include <grub/mm.h>
2N/A#include <grub/video.h>
2N/A#include <grub/video_fb.h>
2N/A#include <SDL/SDL.h>
2N/A
2N/AGRUB_MOD_LICENSE ("GPLv3+");
2N/A
2N/Astatic SDL_Surface *window = 0;
2N/Astatic struct grub_video_render_target *sdl_render_target;
2N/Astatic struct grub_video_mode_info mode_info;
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_sdl_set_palette (unsigned int start, unsigned int count,
2N/A struct grub_video_palette_data *palette_data);
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_sdl_init (void)
2N/A{
2N/A window = 0;
2N/A
2N/A if (SDL_Init (SDL_INIT_VIDEO) < 0)
2N/A return grub_error (GRUB_ERR_BAD_DEVICE, "Couldn't init SDL: %s",
2N/A SDL_GetError ());
2N/A
2N/A grub_memset (&mode_info, 0, sizeof (mode_info));
2N/A
2N/A return grub_video_fb_init ();
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_sdl_fini (void)
2N/A{
2N/A SDL_Quit ();
2N/A window = 0;
2N/A
2N/A grub_memset (&mode_info, 0, sizeof (mode_info));
2N/A
2N/A return grub_video_fb_fini ();
2N/A}
2N/A
2N/Astatic inline unsigned int
2N/Aget_mask_size (grub_uint32_t mask)
2N/A{
2N/A unsigned i;
2N/A for (i = 0; mask > 1U << i; i++);
2N/A return i;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_sdl_setup (unsigned int width, unsigned int height,
2N/A unsigned int mode_type, unsigned int mode_mask)
2N/A{
2N/A int depth;
2N/A int flags = 0;
2N/A grub_err_t err;
2N/A
2N/A /* Decode depth from mode_type. If it is zero, then autodetect. */
2N/A depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)
2N/A >> GRUB_VIDEO_MODE_TYPE_DEPTH_POS;
2N/A
2N/A if (depth == 0)
2N/A depth = 32;
2N/A
2N/A if (width == 0 && height == 0)
2N/A {
2N/A width = 800;
2N/A height = 600;
2N/A }
2N/A
2N/A if ((mode_type & GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED)
2N/A || !(mode_mask & GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED))
2N/A flags |= SDL_DOUBLEBUF;
2N/A
2N/A window = SDL_SetVideoMode (width, height, depth, flags | SDL_HWSURFACE);
2N/A if (! window)
2N/A window = SDL_SetVideoMode (width, height, depth, flags | SDL_SWSURFACE);
2N/A if (! window)
2N/A return grub_error (GRUB_ERR_BAD_DEVICE, "Couldn't open window: %s",
2N/A SDL_GetError ());
2N/A
2N/A grub_memset (&sdl_render_target, 0, sizeof (sdl_render_target));
2N/A
2N/A mode_info.width = window->w;
2N/A mode_info.height = window->h;
2N/A mode_info.mode_type = 0;
2N/A if (window->flags & SDL_DOUBLEBUF)
2N/A mode_info.mode_type
2N/A |= GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED;
2N/A if (window->format->palette)
2N/A mode_info.mode_type |= GRUB_VIDEO_MODE_TYPE_INDEX_COLOR;
2N/A else
2N/A mode_info.mode_type |= GRUB_VIDEO_MODE_TYPE_RGB;
2N/A
2N/A mode_info.bpp = window->format->BitsPerPixel;
2N/A mode_info.bytes_per_pixel = window->format->BytesPerPixel;
2N/A mode_info.pitch = window->pitch;
2N/A
2N/A /* In index color mode, number of colors. In RGB mode this is 256. */
2N/A if (window->format->palette)
2N/A mode_info.number_of_colors
2N/A = 1 << window->format->BitsPerPixel;
2N/A else
2N/A mode_info.number_of_colors = 256;
2N/A
2N/A if (! window->format->palette)
2N/A {
2N/A mode_info.red_mask_size
2N/A = get_mask_size (window->format->Rmask >> window->format->Rshift);
2N/A mode_info.red_field_pos = window->format->Rshift;
2N/A mode_info.green_mask_size
2N/A = get_mask_size (window->format->Gmask >> window->format->Gshift);
2N/A mode_info.green_field_pos = window->format->Gshift;
2N/A mode_info.blue_mask_size
2N/A = get_mask_size (window->format->Bmask >> window->format->Bshift);
2N/A mode_info.blue_field_pos = window->format->Bshift;
2N/A mode_info.reserved_mask_size
2N/A = get_mask_size (window->format->Amask >> window->format->Ashift);
2N/A mode_info.reserved_field_pos = window->format->Ashift;
2N/A mode_info.blit_format
2N/A = grub_video_get_blit_format (&mode_info);
2N/A }
2N/A
2N/A err = grub_video_fb_create_render_target_from_pointer (&sdl_render_target,
2N/A &mode_info,
2N/A window->pixels);
2N/A if (err)
2N/A return err;
2N/A
2N/A /* Copy default palette to initialize emulated palette. */
2N/A grub_video_sdl_set_palette (0, (sizeof (grub_video_fbstd_colors)
2N/A / sizeof (grub_video_fbstd_colors[0])),
2N/A grub_video_fbstd_colors);
2N/A
2N/A /* Reset render target to SDL one. */
2N/A return grub_video_fb_set_active_render_target (sdl_render_target);
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_sdl_set_palette (unsigned int start, unsigned int count,
2N/A struct grub_video_palette_data *palette_data)
2N/A{
2N/A unsigned i;
2N/A if (window->format->palette)
2N/A {
2N/A SDL_Color *tmp = grub_malloc (count * sizeof (tmp[0]));
2N/A for (i = 0; i < count; i++)
2N/A {
2N/A tmp[i].r = palette_data[i].r;
2N/A tmp[i].g = palette_data[i].g;
2N/A tmp[i].b = palette_data[i].b;
2N/A tmp[i].unused = palette_data[i].a;
2N/A }
2N/A SDL_SetColors (window, tmp, start, count);
2N/A grub_free (tmp);
2N/A }
2N/A
2N/A return grub_video_fb_set_palette (start, count, palette_data);
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_sdl_swap_buffers (void)
2N/A{
2N/A if (SDL_Flip (window) < 0)
2N/A return grub_error (GRUB_ERR_BAD_DEVICE, "couldn't swap buffers: %s",
2N/A SDL_GetError ());
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_sdl_set_active_render_target (struct grub_video_render_target *target)
2N/A{
2N/A if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
2N/A return grub_video_fb_set_active_render_target (sdl_render_target);
2N/A
2N/A return grub_video_fb_set_active_render_target (target);
2N/A}
2N/A
2N/Astatic struct grub_video_adapter grub_video_sdl_adapter =
2N/A {
2N/A .name = "SDL Video Driver",
2N/A .id = GRUB_VIDEO_DRIVER_SDL,
2N/A
2N/A .prio = GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE,
2N/A
2N/A .init = grub_video_sdl_init,
2N/A .fini = grub_video_sdl_fini,
2N/A .setup = grub_video_sdl_setup,
2N/A .get_info = grub_video_fb_get_info,
2N/A .set_palette = grub_video_sdl_set_palette,
2N/A .get_palette = grub_video_fb_get_palette,
2N/A .set_viewport = grub_video_fb_set_viewport,
2N/A .get_viewport = grub_video_fb_get_viewport,
2N/A .map_color = grub_video_fb_map_color,
2N/A .map_rgb = grub_video_fb_map_rgb,
2N/A .map_rgba = grub_video_fb_map_rgba,
2N/A .unmap_color = grub_video_fb_unmap_color,
2N/A .fill_rect = grub_video_fb_fill_rect,
2N/A .blit_bitmap = grub_video_fb_blit_bitmap,
2N/A .blit_render_target = grub_video_fb_blit_render_target,
2N/A .scroll = grub_video_fb_scroll,
2N/A .swap_buffers = grub_video_sdl_swap_buffers,
2N/A .create_render_target = grub_video_fb_create_render_target,
2N/A .delete_render_target = grub_video_fb_delete_render_target,
2N/A .set_active_render_target = grub_video_sdl_set_active_render_target,
2N/A .get_active_render_target = grub_video_fb_get_active_render_target,
2N/A
2N/A .next = 0
2N/A };
2N/A
2N/AGRUB_MOD_INIT(sdl)
2N/A{
2N/A grub_video_register (&grub_video_sdl_adapter);
2N/A}
2N/A
2N/AGRUB_MOD_FINI(sdl)
2N/A{
2N/A grub_video_unregister (&grub_video_sdl_adapter);
2N/A}