274 lines
10 KiB
C
274 lines
10 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006,2007 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_VIDEO_HEADER
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#define GRUB_VIDEO_HEADER 1
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#include <grub/err.h>
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#include <grub/types.h>
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/* Video color in hardware dependant format. Users should not assume any
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specific coding format. */
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typedef grub_uint32_t grub_video_color_t;
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/* This structure is driver specific and should not be accessed directly by
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outside code. */
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struct grub_video_render_target;
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/* Forward declarations for used data structures. */
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struct grub_font_glyph;
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struct grub_video_bitmap;
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/* Defines used to describe video mode or rendering target. */
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#define GRUB_VIDEO_MODE_TYPE_ALPHA 0x00000008
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#define GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED 0x00000004
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#define GRUB_VIDEO_MODE_TYPE_INDEX_COLOR 0x00000002
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#define GRUB_VIDEO_MODE_TYPE_RGB 0x00000001
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/* Defines used to mask flags. */
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#define GRUB_VIDEO_MODE_TYPE_COLOR_MASK 0x00000003
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/* Defines used to specify requested bit depth. */
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#define GRUB_VIDEO_MODE_TYPE_DEPTH_MASK 0x0000ff00
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#define GRUB_VIDEO_MODE_TYPE_DEPTH_POS 8
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/* Defined predefined render targets. */
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#define GRUB_VIDEO_RENDER_TARGET_DISPLAY ((struct grub_video_render_target *) 0)
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#define GRUB_VIDEO_RENDER_TARGET_FRONT_BUFFER ((struct grub_video_render_target *) 0)
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#define GRUB_VIDEO_RENDER_TARGET_BACK_BUFFER ((struct grub_video_render_target *) 1)
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/* Defined blitting formats. */
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enum grub_video_blit_format
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{
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/* Follow exactly field & mask information. */
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GRUB_VIDEO_BLIT_FORMAT_RGBA,
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/* Make optimization assumption. */
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GRUB_VIDEO_BLIT_FORMAT_R8G8B8A8,
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/* Follow exactly field & mask information. */
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GRUB_VIDEO_BLIT_FORMAT_RGB,
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/* Make optimization assumption. */
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GRUB_VIDEO_BLIT_FORMAT_R8G8B8,
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/* When needed, decode color or just use value as is. */
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GRUB_VIDEO_BLIT_FORMAT_INDEXCOLOR
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};
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/* Define blitting operators. */
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enum grub_video_blit_operators
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{
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/* Replace target bitmap data with source. */
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GRUB_VIDEO_BLIT_REPLACE,
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/* Blend target and source based on source's alpha value. */
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GRUB_VIDEO_BLIT_BLEND
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};
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struct grub_video_mode_info
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{
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/* Width of the screen. */
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unsigned int width;
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/* Height of the screen. */
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unsigned int height;
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/* Mode type bitmask. Contains information like is it Index color or
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RGB mode. */
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unsigned int mode_type;
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/* Bits per pixel. */
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unsigned int bpp;
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/* Bytes per pixel. */
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unsigned int bytes_per_pixel;
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/* Pitch of one scanline. How many bytes there are for scanline. */
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unsigned int pitch;
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/* In index color mode, number of colors. In RGB mode this is 256. */
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unsigned int number_of_colors;
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/* Optimization hint how binary data is coded. */
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enum grub_video_blit_format blit_format;
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/* How many bits are reserved for red color. */
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unsigned int red_mask_size;
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/* What is location of red color bits. In Index Color mode, this is 0. */
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unsigned int red_field_pos;
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/* How many bits are reserved for green color. */
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unsigned int green_mask_size;
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/* What is location of green color bits. In Index Color mode, this is 0. */
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unsigned int green_field_pos;
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/* How many bits are reserved for blue color. */
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unsigned int blue_mask_size;
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/* What is location of blue color bits. In Index Color mode, this is 0. */
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unsigned int blue_field_pos;
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/* How many bits are reserved in color. */
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unsigned int reserved_mask_size;
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/* What is location of reserved color bits. In Index Color mode,
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this is 0. */
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unsigned int reserved_field_pos;
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};
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struct grub_video_palette_data
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{
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grub_uint8_t r; /* Red color value (0-255). */
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grub_uint8_t g; /* Green color value (0-255). */
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grub_uint8_t b; /* Blue color value (0-255). */
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grub_uint8_t a; /* Reserved bits value (0-255). */
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};
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struct grub_video_adapter
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{
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/* The video adapter name. */
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const char *name;
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/* Initialize the video adapter. */
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grub_err_t (*init) (void);
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/* Clean up the video adapter. */
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grub_err_t (*fini) (void);
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grub_err_t (*setup) (unsigned int width, unsigned int height,
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unsigned int mode_type);
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grub_err_t (*get_info) (struct grub_video_mode_info *mode_info);
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grub_err_t (*set_palette) (unsigned int start, unsigned int count,
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struct grub_video_palette_data *palette_data);
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grub_err_t (*get_palette) (unsigned int start, unsigned int count,
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struct grub_video_palette_data *palette_data);
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grub_err_t (*set_viewport) (unsigned int x, unsigned int y,
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unsigned int width, unsigned int height);
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grub_err_t (*get_viewport) (unsigned int *x, unsigned int *y,
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unsigned int *width, unsigned int *height);
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grub_video_color_t (*map_color) (grub_uint32_t color_name);
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grub_video_color_t (*map_rgb) (grub_uint8_t red, grub_uint8_t green,
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grub_uint8_t blue);
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grub_video_color_t (*map_rgba) (grub_uint8_t red, grub_uint8_t green,
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grub_uint8_t blue, grub_uint8_t alpha);
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grub_err_t (*fill_rect) (grub_video_color_t color, int x, int y,
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unsigned int width, unsigned int height);
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grub_err_t (*blit_glyph) (struct grub_font_glyph *glyph,
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grub_video_color_t color, int x, int y);
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grub_err_t (*blit_bitmap) (struct grub_video_bitmap *bitmap,
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enum grub_video_blit_operators oper,
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int x, int y, int offset_x, int offset_y,
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unsigned int width, unsigned int height);
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grub_err_t (*blit_render_target) (struct grub_video_render_target *source,
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enum grub_video_blit_operators oper,
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int x, int y, int offset_x, int offset_y,
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unsigned int width, unsigned int height);
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grub_err_t (*scroll) (grub_video_color_t color, int dx, int dy);
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grub_err_t (*swap_buffers) (void);
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grub_err_t (*create_render_target) (struct grub_video_render_target **result,
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unsigned int width, unsigned int height,
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unsigned int mode_type);
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grub_err_t (*delete_render_target) (struct grub_video_render_target *target);
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grub_err_t (*set_active_render_target) (struct grub_video_render_target *target);
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/* The next video adapter. */
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struct grub_video_adapter *next;
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};
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typedef struct grub_video_adapter *grub_video_adapter_t;
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void grub_video_register (grub_video_adapter_t adapter);
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void grub_video_unregister (grub_video_adapter_t adapter);
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void grub_video_iterate (int (*hook) (grub_video_adapter_t adapter));
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grub_err_t grub_video_setup (unsigned int width, unsigned int height,
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unsigned int mode_type);
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grub_err_t grub_video_restore (void);
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grub_err_t grub_video_get_info (struct grub_video_mode_info *mode_info);
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enum grub_video_blit_format grub_video_get_blit_format (struct grub_video_mode_info *mode_info);
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grub_err_t grub_video_set_palette (unsigned int start, unsigned int count,
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struct grub_video_palette_data *palette_data);
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grub_err_t grub_video_get_palette (unsigned int start, unsigned int count,
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struct grub_video_palette_data *palette_data);
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grub_err_t grub_video_set_viewport (unsigned int x, unsigned int y,
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unsigned int width, unsigned int height);
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grub_err_t grub_video_get_viewport (unsigned int *x, unsigned int *y,
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unsigned int *width, unsigned int *height);
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grub_video_color_t grub_video_map_color (grub_uint32_t color_name);
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grub_video_color_t grub_video_map_rgb (grub_uint8_t red, grub_uint8_t green,
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grub_uint8_t blue);
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grub_video_color_t grub_video_map_rgba (grub_uint8_t red, grub_uint8_t green,
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grub_uint8_t blue, grub_uint8_t alpha);
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grub_err_t grub_video_fill_rect (grub_video_color_t color, int x, int y,
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unsigned int width, unsigned int height);
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grub_err_t grub_video_blit_glyph (struct grub_font_glyph *glyph,
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grub_video_color_t color, int x, int y);
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grub_err_t grub_video_blit_bitmap (struct grub_video_bitmap *bitmap,
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enum grub_video_blit_operators oper,
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int x, int y, int offset_x, int offset_y,
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unsigned int width, unsigned int height);
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grub_err_t grub_video_blit_render_target (struct grub_video_render_target *source,
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enum grub_video_blit_operators oper,
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int x, int y,
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int offset_x, int offset_y,
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unsigned int width,
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unsigned int height);
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grub_err_t grub_video_scroll (grub_video_color_t color, int dx, int dy);
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grub_err_t grub_video_swap_buffers (void);
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grub_err_t grub_video_create_render_target (struct grub_video_render_target **result,
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unsigned int width,
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unsigned int height,
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unsigned int mode_type);
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grub_err_t grub_video_delete_render_target (struct grub_video_render_target *target);
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grub_err_t grub_video_set_active_render_target (struct grub_video_render_target *target);
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#endif /* ! GRUB_VIDEO_HEADER */
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