From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- grub-core/video/emu/sdl.c | 252 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 252 insertions(+) create mode 100644 grub-core/video/emu/sdl.c (limited to 'grub-core/video/emu') 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 . + */ + +#define grub_video_render_target grub_video_fbrender_target + +#include +#include +#include +#include +#include +#include +#include +#include + +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); +} -- cgit v1.2.3