1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved 4 * 5 * Permission is hereby granted, free of charge, to any person 6 * obtaining a copy of this software and associated documentation 7 * files (the "Software"), to deal in the Software without 8 * restriction, including without limitation the rights to use, 9 * copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom 11 * the Software is furnished to do so, subject to the following 12 * conditions: 13 * 14 * The above copyright notice and this permission notice shall 15 * be included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 19 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 21 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 24 * OTHER DEALINGS IN THE SOFTWARE. 25 * 26 * ----------------------------------------------------------------------- */ 27 28 #ifndef LIB_SYS_VESA_VIDEO_H 29 #define LIB_SYS_VESA_VIDEO_H 30 31 #include <stdbool.h> 32 #include <colortbl.h> 33 #include "vesa.h" 34 35 #define FONT_MAX_CHARS 256 36 #define FONT_MAX_HEIGHT 32 37 #define FONT_WIDTH 8 38 39 #define DEFAULT_VESA_X_SIZE 640 40 #define DEFAULT_VESA_Y_SIZE 480 41 42 #define VIDEO_BORDER 8 43 #define TEXT_PIXEL_ROWS (__vesa_info.mi.v_res - 2*VIDEO_BORDER) 44 #define TEXT_PIXEL_COLS (__vesa_info.mi.h_res - 2*VIDEO_BORDER) 45 46 typedef uint16_t attr_t; 47 48 struct vesa_char { 49 uint8_t ch; /* Character */ 50 uint8_t _filler; /* Currently unused */ 51 attr_t attr; /* Color table index */ 52 }; 53 54 struct win_info { 55 char *win_base; 56 size_t win_pos; 57 size_t win_size; 58 int win_gshift; 59 int win_num; 60 }; 61 62 /* Pixel formats in order of decreasing preference; PXF_NONE should be last */ 63 /* BGR24 is preferred over BGRA32 since the I/O overhead is smaller. */ 64 enum vesa_pixel_format { 65 PXF_BGR24, /* 24-bit BGR */ 66 PXF_BGRA32, /* 32-bit BGRA */ 67 PXF_LE_RGB16_565, /* 16-bit littleendian 5:6:5 RGB */ 68 PXF_LE_RGB15_555, /* 15-bit littleendian 5:5:5 RGB */ 69 PXF_NONE 70 }; 71 extern enum vesa_pixel_format __vesacon_pixel_format; 72 extern unsigned int __vesacon_bytes_per_pixel; 73 typedef const void *(*__vesacon_format_pixels_t) 74 (void *, const uint32_t *, size_t); 75 extern __vesacon_format_pixels_t __vesacon_format_pixels; 76 extern const __vesacon_format_pixels_t __vesacon_format_pixels_list[PXF_NONE]; 77 78 extern struct vesa_char *__vesacon_text_display; 79 80 extern int __vesacon_font_height; 81 extern int __vesacon_text_rows; 82 extern int __vesacon_text_cols; 83 extern uint8_t __vesacon_graphics_font[FONT_MAX_CHARS][FONT_MAX_HEIGHT]; 84 extern uint32_t *__vesacon_background; 85 extern uint32_t *__vesacon_shadowfb; 86 87 extern const uint16_t __vesacon_srgb_to_linear[256]; 88 extern const uint8_t __vesacon_linear_to_srgb[4080]; 89 90 int __vesacon_init_background(void); 91 int vesacon_load_background(const char *); 92 int __vesacon_init(int *, int *); 93 void __vesacon_init_cursor(int); 94 void __vesacon_erase(int, int, int, int, attr_t); 95 void __vesacon_scroll_up(int, attr_t); 96 void __vesacon_write_char(int, int, uint8_t, attr_t); 97 void __vesacon_redraw_text(void); 98 void __vesacon_doit(void); 99 void __vesacon_set_cursor(int, int, bool); 100 void __vesacon_copy_to_screen(size_t, const uint32_t *, size_t); 101 void __vesacon_init_copy_to_screen(void); 102 103 int __vesacon_i915resolution(int x, int y); 104 105 #endif /* LIB_SYS_VESA_VIDEO_H */ 106
