vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity
grub/include/grub/video.h
Vladimir 'phcoder' Serbinenko 4dd58a6edd Change video_mode_type to an enum, fix collisions and add a bit more info
2010-09-12 02:09:09 +02:00

431 lines
14 KiB
C
Raw Blame History

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 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/>.
*/
#ifndef GRUB_VIDEO_HEADER
#define GRUB_VIDEO_HEADER 1
#include <grub/err.h>
#include <grub/types.h>
#include <grub/list.h>
/* Video color in hardware dependent format. Users should not assume any
specific coding format. */
typedef grub_uint32_t grub_video_color_t;
/* This structure is driver specific and should not be accessed directly by
outside code. */
struct grub_video_render_target;
/* Forward declarations for used data structures. */
struct grub_video_bitmap;
/* Defines used to describe video mode or rendering target. */
/* If following is set render target contains currenly displayed image
after swapping buffers (otherwise it contains previously displayed image).
*/
typedef enum grub_video_mode_type
{
GRUB_VIDEO_MODE_TYPE_RGB = 0x00000001,
GRUB_VIDEO_MODE_TYPE_INDEX_COLOR = 0x00000002,
GRUB_VIDEO_MODE_TYPE_1BIT_BITMAP = 0x00000004,
GRUB_VIDEO_MODE_TYPE_YUV = 0x00000008,
/* Defines used to mask flags. */
GRUB_VIDEO_MODE_TYPE_COLOR_MASK = 0x0000000F,
GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED = 0x00000010,
GRUB_VIDEO_MODE_TYPE_ALPHA = 0x00000020,
GRUB_VIDEO_MODE_TYPE_PURE_TEXT = 0x00000040,
GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP = 0x00000080,
GRUB_VIDEO_MODE_TYPE_OPERATIONAL_MASK = 0x000000F0,
/* Defines used to specify requested bit depth. */
GRUB_VIDEO_MODE_TYPE_DEPTH_MASK = 0x0000FF00,
#define GRUB_VIDEO_MODE_TYPE_DEPTH_POS 8
GRUB_VIDEO_MODE_TYPE_UNKNOWN = 0x00010000,
GRUB_VIDEO_MODE_TYPE_HERCULES = 0x00020000,
GRUB_VIDEO_MODE_TYPE_PLANAR = 0x00040000,
GRUB_VIDEO_MODE_TYPE_NONCHAIN4 = 0x00080000,
GRUB_VIDEO_MODE_TYPE_CGA = 0x00100000,
GRUB_VIDEO_MODE_TYPE_INFO_MASK = 0x00FF0000,
} grub_video_mode_type_t;
/* The basic render target representing the whole display. This always
renders to the back buffer when double-buffering is in use. */
#define GRUB_VIDEO_RENDER_TARGET_DISPLAY \
((struct grub_video_render_target *) 0)
/* Defined blitting formats. */
enum grub_video_blit_format
{
/* Generic RGBA, use fields & masks. */
GRUB_VIDEO_BLIT_FORMAT_RGBA,
/* Optimized RGBA's. */
GRUB_VIDEO_BLIT_FORMAT_RGBA_8888,
GRUB_VIDEO_BLIT_FORMAT_BGRA_8888,
/* Generic RGB, use fields & masks. */
GRUB_VIDEO_BLIT_FORMAT_RGB,
/* Optimized RGB's. */
GRUB_VIDEO_BLIT_FORMAT_RGB_888,
GRUB_VIDEO_BLIT_FORMAT_BGR_888,
GRUB_VIDEO_BLIT_FORMAT_RGB_565,
GRUB_VIDEO_BLIT_FORMAT_BGR_565,
/* When needed, decode color or just use value as is. */
GRUB_VIDEO_BLIT_FORMAT_INDEXCOLOR,
/* Two color bitmap; bits packed: rows are not padded to byte boundary. */
GRUB_VIDEO_BLIT_FORMAT_1BIT_PACKED
};
/* Define blitting operators. */
enum grub_video_blit_operators
{
/* Replace target bitmap data with source. */
GRUB_VIDEO_BLIT_REPLACE,
/* Blend target and source based on source's alpha value. */
GRUB_VIDEO_BLIT_BLEND
};
struct grub_video_mode_info
{
/* Width of the screen. */
unsigned int width;
/* Height of the screen. */
unsigned int height;
/* Mode type bitmask. Contains information like is it Index color or
RGB mode. */
grub_video_mode_type_t mode_type;
/* Bits per pixel. */
unsigned int bpp;
/* Bytes per pixel. */
unsigned int bytes_per_pixel;
/* Pitch of one scanline. How many bytes there are for scanline. */
unsigned int pitch;
/* In index color mode, number of colors. In RGB mode this is 256. */
unsigned int number_of_colors;
unsigned int mode_number;
#define GRUB_VIDEO_MODE_NUMBER_INVALID 0xffffffff
/* Optimization hint how binary data is coded. */
enum grub_video_blit_format blit_format;
/* How many bits are reserved for red color. */
unsigned int red_mask_size;
/* What is location of red color bits. In Index Color mode, this is 0. */
unsigned int red_field_pos;
/* How many bits are reserved for green color. */
unsigned int green_mask_size;
/* What is location of green color bits. In Index Color mode, this is 0. */
unsigned int green_field_pos;
/* How many bits are reserved for blue color. */
unsigned int blue_mask_size;
/* What is location of blue color bits. In Index Color mode, this is 0. */
unsigned int blue_field_pos;
/* How many bits are reserved in color. */
unsigned int reserved_mask_size;
/* What is location of reserved color bits. In Index Color mode,
this is 0. */
unsigned int reserved_field_pos;
/* For 1-bit bitmaps, the background color. Used for bits = 0. */
grub_uint8_t bg_red;
grub_uint8_t bg_green;
grub_uint8_t bg_blue;
grub_uint8_t bg_alpha;
/* For 1-bit bitmaps, the foreground color. Used for bits = 1. */
grub_uint8_t fg_red;
grub_uint8_t fg_green;
grub_uint8_t fg_blue;
grub_uint8_t fg_alpha;
};
/* A 2D rectangle type. */
struct grub_video_rect
{
unsigned x;
unsigned y;
unsigned width;
unsigned height;
};
typedef struct grub_video_rect grub_video_rect_t;
struct grub_video_signed_rect
{
signed x;
signed y;
unsigned width;
unsigned height;
};
typedef struct grub_video_signed_rect grub_video_signed_rect_t;
struct grub_video_palette_data
{
grub_uint8_t r; /* Red color value (0-255). */
grub_uint8_t g; /* Green color value (0-255). */
grub_uint8_t b; /* Blue color value (0-255). */
grub_uint8_t a; /* Reserved bits value (0-255). */
};
typedef enum grub_video_driver_id
{
GRUB_VIDEO_DRIVER_NONE,
GRUB_VIDEO_DRIVER_VBE,
GRUB_VIDEO_DRIVER_EFI_UGA,
GRUB_VIDEO_DRIVER_EFI_GOP,
GRUB_VIDEO_DRIVER_SM712,
GRUB_VIDEO_DRIVER_VGA,
GRUB_VIDEO_DRIVER_CIRRUS,
GRUB_VIDEO_DRIVER_BOCHS,
GRUB_VIDEO_DRIVER_SDL
} grub_video_driver_id_t;
typedef enum grub_video_adapter_prio
{
GRUB_VIDEO_ADAPTER_PRIO_FALLBACK = 60,
GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE_DIRTY = 70,
GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE = 80,
GRUB_VIDEO_ADAPTER_PRIO_NATIVE = 100
} grub_video_adapter_prio_t;
struct grub_video_adapter
{
/* The next video adapter. */
struct grub_video_adapter *next;
/* The video adapter name. */
const char *name;
grub_video_driver_id_t id;
grub_video_adapter_prio_t prio;
/* Initialize the video adapter. */
grub_err_t (*init) (void);
/* Clean up the video adapter. */
grub_err_t (*fini) (void);
grub_err_t (*setup) (unsigned int width, unsigned int height,
grub_video_mode_type_t mode_type,
grub_video_mode_type_t mode_mask);
grub_err_t (*get_info) (struct grub_video_mode_info *mode_info);
grub_err_t (*get_info_and_fini) (struct grub_video_mode_info *mode_info,
void **framebuffer);
grub_err_t (*set_palette) (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data);
grub_err_t (*get_palette) (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data);
grub_err_t (*set_viewport) (unsigned int x, unsigned int y,
unsigned int width, unsigned int height);
grub_err_t (*get_viewport) (unsigned int *x, unsigned int *y,
unsigned int *width, unsigned int *height);
grub_video_color_t (*map_color) (grub_uint32_t color_name);
grub_video_color_t (*map_rgb) (grub_uint8_t red, grub_uint8_t green,
grub_uint8_t blue);
grub_video_color_t (*map_rgba) (grub_uint8_t red, grub_uint8_t green,
grub_uint8_t blue, grub_uint8_t alpha);
grub_err_t (*unmap_color) (grub_video_color_t color,
grub_uint8_t *red, grub_uint8_t *green,
grub_uint8_t *blue, grub_uint8_t *alpha);
grub_err_t (*fill_rect) (grub_video_color_t color, int x, int y,
unsigned int width, unsigned int height);
grub_err_t (*blit_bitmap) (struct grub_video_bitmap *bitmap,
enum grub_video_blit_operators oper,
int x, int y, int offset_x, int offset_y,
unsigned int width, unsigned int height);
grub_err_t (*blit_render_target) (struct grub_video_render_target *source,
enum grub_video_blit_operators oper,
int x, int y, int offset_x, int offset_y,
unsigned int width, unsigned int height);
grub_err_t (*scroll) (grub_video_color_t color, int dx, int dy);
grub_err_t (*swap_buffers) (void);
grub_err_t (*create_render_target) (struct grub_video_render_target **result,
unsigned int width, unsigned int height,
unsigned int mode_type);
grub_err_t (*delete_render_target) (struct grub_video_render_target *target);
grub_err_t (*set_active_render_target) (struct grub_video_render_target *target);
grub_err_t (*get_active_render_target) (struct grub_video_render_target **target);
int (*iterate) (int (*hook) (const struct grub_video_mode_info *info));
void (*print_adapter_specific_info) (void);
};
typedef struct grub_video_adapter *grub_video_adapter_t;
extern grub_video_adapter_t EXPORT_VAR(grub_video_adapter_list);
#ifndef GRUB_LST_GENERATOR
/* Register video driver. */
static inline void
grub_video_register (grub_video_adapter_t adapter)
{
grub_video_adapter_t *p;
for (p = &grub_video_adapter_list; *p && (*p)->prio > adapter->prio;
p = &((*p)->next));
adapter->next = *p;
*p = adapter;
}
#endif
/* Unregister video driver. */
static inline void
grub_video_unregister (grub_video_adapter_t adapter)
{
grub_list_remove (GRUB_AS_LIST_P (&grub_video_adapter_list),
GRUB_AS_LIST (adapter));
}
#define FOR_VIDEO_ADAPTERS(var) FOR_LIST_ELEMENTS((var), (grub_video_adapter_list))
grub_err_t EXPORT_FUNC (grub_video_restore) (void);
grub_err_t EXPORT_FUNC (grub_video_get_info) (struct grub_video_mode_info *mode_info);
/* Framebuffer address may change as a part of normal operation
(e.g. double buffering). That's why you need to stop video subsystem to be
sure that framebuffer address doesn't change. To ensure this abstraction
grub_video_get_info_and_fini is the only function supplying framebuffer
address. */
grub_err_t EXPORT_FUNC (grub_video_get_info_and_fini) (struct grub_video_mode_info *mode_info,
void **framebuffer);
enum grub_video_blit_format grub_video_get_blit_format (struct grub_video_mode_info *mode_info);
grub_err_t grub_video_set_palette (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data);
grub_err_t EXPORT_FUNC (grub_video_get_palette) (unsigned int start,
unsigned int count,
struct grub_video_palette_data *palette_data);
grub_err_t EXPORT_FUNC (grub_video_set_viewport) (unsigned int x,
unsigned int y,
unsigned int width,
unsigned int height);
grub_err_t EXPORT_FUNC (grub_video_get_viewport) (unsigned int *x,
unsigned int *y,
unsigned int *width,
unsigned int *height);
grub_video_color_t EXPORT_FUNC (grub_video_map_color) (grub_uint32_t color_name);
grub_video_color_t EXPORT_FUNC (grub_video_map_rgb) (grub_uint8_t red,
grub_uint8_t green,
grub_uint8_t blue);
grub_video_color_t EXPORT_FUNC (grub_video_map_rgba) (grub_uint8_t red,
grub_uint8_t green,
grub_uint8_t blue,
grub_uint8_t alpha);
grub_err_t EXPORT_FUNC (grub_video_unmap_color) (grub_video_color_t color,
grub_uint8_t *red,
grub_uint8_t *green,
grub_uint8_t *blue,
grub_uint8_t *alpha);
grub_err_t EXPORT_FUNC (grub_video_fill_rect) (grub_video_color_t color,
int x, int y,
unsigned int width,
unsigned int height);
grub_err_t EXPORT_FUNC (grub_video_blit_bitmap) (struct grub_video_bitmap *bitmap,
enum grub_video_blit_operators oper,
int x, int y,
int offset_x, int offset_y,
unsigned int width,
unsigned int height);
grub_err_t EXPORT_FUNC (grub_video_blit_render_target) (struct grub_video_render_target *source,
enum grub_video_blit_operators oper,
int x, int y,
int offset_x,
int offset_y,
unsigned int width,
unsigned int height);
grub_err_t grub_video_scroll (grub_video_color_t color, int dx, int dy);
grub_err_t EXPORT_FUNC (grub_video_swap_buffers) (void);
grub_err_t EXPORT_FUNC (grub_video_create_render_target) (struct grub_video_render_target **result,
unsigned int width,
unsigned int height,
unsigned int mode_type);
grub_err_t EXPORT_FUNC (grub_video_delete_render_target) (struct grub_video_render_target *target);
grub_err_t EXPORT_FUNC (grub_video_set_active_render_target) (struct grub_video_render_target *target);
grub_err_t grub_video_get_active_render_target (struct grub_video_render_target **target);
grub_err_t EXPORT_FUNC (grub_video_set_mode) (const char *modestring,
unsigned int modemask,
unsigned int modevalue);
static inline int
grub_video_check_mode_flag (grub_video_mode_type_t flags,
grub_video_mode_type_t mask,
grub_video_mode_type_t flag, int def)
{
return (flag & mask) ? !! (flags & flag) : def;
}
grub_video_driver_id_t EXPORT_FUNC (grub_video_get_driver_id) (void);
#endif /* ! GRUB_VIDEO_HEADER */
Reference in a new issue View git blame Copy permalink