106 lines
3.7 KiB
C
106 lines
3.7 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2006-2008 H. Peter Anvin - All Rights Reserved
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall
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* be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* ----------------------------------------------------------------------- */
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#ifndef LIB_SYS_VESA_VIDEO_H
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#define LIB_SYS_VESA_VIDEO_H
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#include <stdbool.h>
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#include <colortbl.h>
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#include "vesa.h"
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#define FONT_MAX_CHARS 256
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#define FONT_MAX_HEIGHT 32
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#define FONT_WIDTH 8
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#define DEFAULT_VESA_X_SIZE 640
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#define DEFAULT_VESA_Y_SIZE 480
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#define VIDEO_BORDER 8
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#define TEXT_PIXEL_ROWS (__vesa_info.mi.v_res - 2*VIDEO_BORDER)
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#define TEXT_PIXEL_COLS (__vesa_info.mi.h_res - 2*VIDEO_BORDER)
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typedef uint16_t attr_t;
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struct vesa_char {
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uint8_t ch; /* Character */
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uint8_t _filler; /* Currently unused */
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attr_t attr; /* Color table index */
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};
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struct win_info {
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char *win_base;
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size_t win_pos;
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size_t win_size;
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int win_gshift;
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int win_num;
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};
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/* Pixel formats in order of decreasing preference; PXF_NONE should be last */
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/* BGR24 is preferred over BGRA32 since the I/O overhead is smaller. */
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enum vesa_pixel_format {
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PXF_BGR24, /* 24-bit BGR */
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PXF_BGRA32, /* 32-bit BGRA */
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PXF_LE_RGB16_565, /* 16-bit littleendian 5:6:5 RGB */
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PXF_LE_RGB15_555, /* 15-bit littleendian 5:5:5 RGB */
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PXF_NONE
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};
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extern enum vesa_pixel_format __vesacon_pixel_format;
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extern unsigned int __vesacon_bytes_per_pixel;
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typedef const void *(*__vesacon_format_pixels_t)
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(void *, const uint32_t *, size_t);
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extern __vesacon_format_pixels_t __vesacon_format_pixels;
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extern const __vesacon_format_pixels_t __vesacon_format_pixels_list[PXF_NONE];
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extern struct vesa_char *__vesacon_text_display;
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extern int __vesacon_font_height;
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extern int __vesacon_text_rows;
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extern int __vesacon_text_cols;
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extern uint8_t __vesacon_graphics_font[FONT_MAX_CHARS][FONT_MAX_HEIGHT];
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extern uint32_t *__vesacon_background;
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extern uint32_t *__vesacon_shadowfb;
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extern const uint16_t __vesacon_srgb_to_linear[256];
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extern const uint8_t __vesacon_linear_to_srgb[4080];
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int __vesacon_init_background(void);
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int vesacon_load_background(const char *);
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int __vesacon_init(int *, int *);
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void __vesacon_init_cursor(int);
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void __vesacon_erase(int, int, int, int, attr_t);
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void __vesacon_scroll_up(int, attr_t);
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void __vesacon_write_char(int, int, uint8_t, attr_t);
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void __vesacon_redraw_text(void);
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void __vesacon_doit(void);
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void __vesacon_set_cursor(int, int, bool);
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void __vesacon_copy_to_screen(size_t, const uint32_t *, size_t);
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void __vesacon_init_copy_to_screen(void);
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int __vesacon_i915resolution(int x, int y);
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#endif /* LIB_SYS_VESA_VIDEO_H */
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