| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #ifndef _SDL_fbvideo_h |
| 25 | #define _SDL_fbvideo_h |
| 26 | |
| 27 | #include <sys/types.h> |
| 28 | #include <termios.h> |
| 29 | #include <linux/fb.h> |
| 30 | |
| 31 | #include "SDL_mouse.h" |
| 32 | #include "SDL_mutex.h" |
| 33 | #include "../SDL_sysvideo.h" |
| 34 | #if SDL_INPUT_TSLIB |
| 35 | #include "tslib.h" |
| 36 | #endif |
| 37 | |
| 38 | /* Hidden "this" pointer for the video functions */ |
| 39 | #define _THIS SDL_VideoDevice *this |
| 40 | |
| 41 | typedef void FB_bitBlit( |
| 42 | Uint8 *src_pos, |
| 43 | int src_right_delta, /* pixels, not bytes */ |
| 44 | int src_down_delta, /* pixels, not bytes */ |
| 45 | Uint8 *dst_pos, |
| 46 | int dst_linebytes, |
| 47 | int width, |
| 48 | int height); |
| 49 | |
| 50 | /* This is the structure we use to keep track of video memory */ |
| 51 | typedef struct vidmem_bucket { |
| 52 | struct vidmem_bucket *prev; |
| 53 | int used; |
| 54 | int dirty; |
| 55 | char *base; |
| 56 | unsigned int size; |
| 57 | struct vidmem_bucket *next; |
| 58 | } vidmem_bucket; |
| 59 | |
| 60 | /* Private display data */ |
| 61 | struct SDL_PrivateVideoData { |
| 62 | int console_fd; |
| 63 | struct fb_var_screeninfo cache_vinfo; |
| 64 | struct fb_var_screeninfo saved_vinfo; |
| 65 | int saved_cmaplen; |
| 66 | __u16 *saved_cmap; |
| 67 | |
| 68 | int current_vt; |
| 69 | int saved_vt; |
| 70 | int keyboard_fd; |
| 71 | int saved_kbd_mode; |
| 72 | struct termios saved_kbd_termios; |
| 73 | |
| 74 | int mouse_fd; |
| 75 | #if SDL_INPUT_TSLIB |
| 76 | struct tsdev *ts_dev; |
| 77 | #endif |
| 78 | |
| 79 | char *mapped_mem; |
| 80 | char *shadow_mem; |
| 81 | int mapped_memlen; |
| 82 | int mapped_offset; |
| 83 | char *mapped_io; |
| 84 | long mapped_iolen; |
| 85 | int flip_page; |
| 86 | char *flip_address[2]; |
| 87 | int rotate; |
| 88 | int shadow_fb; /* Tells whether a shadow is being used. */ |
| 89 | FB_bitBlit *blitFunc; |
| 90 | int physlinebytes; /* Length of a line in bytes in physical fb */ |
| 91 | |
| 92 | #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ |
| 93 | int SDL_nummodes[NUM_MODELISTS]; |
| 94 | SDL_Rect **SDL_modelist[NUM_MODELISTS]; |
| 95 | |
| 96 | vidmem_bucket surfaces; |
| 97 | int surfaces_memtotal; |
| 98 | int surfaces_memleft; |
| 99 | |
| 100 | SDL_mutex *hw_lock; |
| 101 | int switched_away; |
| 102 | struct fb_var_screeninfo screen_vinfo; |
| 103 | Uint32 screen_arealen; |
| 104 | Uint8 *screen_contents; |
| 105 | __u16 screen_palette[3*256]; |
| 106 | |
| 107 | void (*wait_vbl)(_THIS); |
| 108 | void (*wait_idle)(_THIS); |
| 109 | }; |
| 110 | /* Old variable names */ |
| 111 | #define console_fd (this->hidden->console_fd) |
| 112 | #define current_vt (this->hidden->current_vt) |
| 113 | #define saved_vt (this->hidden->saved_vt) |
| 114 | #define keyboard_fd (this->hidden->keyboard_fd) |
| 115 | #define saved_kbd_mode (this->hidden->saved_kbd_mode) |
| 116 | #define saved_kbd_termios (this->hidden->saved_kbd_termios) |
| 117 | #define mouse_fd (this->hidden->mouse_fd) |
| 118 | #if SDL_INPUT_TSLIB |
| 119 | #define ts_dev (this->hidden->ts_dev) |
| 120 | #endif |
| 121 | #define cache_vinfo (this->hidden->cache_vinfo) |
| 122 | #define saved_vinfo (this->hidden->saved_vinfo) |
| 123 | #define saved_cmaplen (this->hidden->saved_cmaplen) |
| 124 | #define saved_cmap (this->hidden->saved_cmap) |
| 125 | #define mapped_mem (this->hidden->mapped_mem) |
| 126 | #define shadow_mem (this->hidden->shadow_mem) |
| 127 | #define mapped_memlen (this->hidden->mapped_memlen) |
| 128 | #define mapped_offset (this->hidden->mapped_offset) |
| 129 | #define mapped_io (this->hidden->mapped_io) |
| 130 | #define mapped_iolen (this->hidden->mapped_iolen) |
| 131 | #define flip_page (this->hidden->flip_page) |
| 132 | #define flip_address (this->hidden->flip_address) |
| 133 | #define rotate (this->hidden->rotate) |
| 134 | #define shadow_fb (this->hidden->shadow_fb) |
| 135 | #define blitFunc (this->hidden->blitFunc) |
| 136 | #define physlinebytes (this->hidden->physlinebytes) |
| 137 | #define SDL_nummodes (this->hidden->SDL_nummodes) |
| 138 | #define SDL_modelist (this->hidden->SDL_modelist) |
| 139 | #define surfaces (this->hidden->surfaces) |
| 140 | #define surfaces_memtotal (this->hidden->surfaces_memtotal) |
| 141 | #define surfaces_memleft (this->hidden->surfaces_memleft) |
| 142 | #define hw_lock (this->hidden->hw_lock) |
| 143 | #define switched_away (this->hidden->switched_away) |
| 144 | #define screen_vinfo (this->hidden->screen_vinfo) |
| 145 | #define screen_arealen (this->hidden->screen_arealen) |
| 146 | #define screen_contents (this->hidden->screen_contents) |
| 147 | #define screen_palette (this->hidden->screen_palette) |
| 148 | #define wait_vbl (this->hidden->wait_vbl) |
| 149 | #define wait_idle (this->hidden->wait_idle) |
| 150 | |
| 151 | /* Accelerator types that are supported by the driver, but are not |
| 152 | necessarily in the kernel headers on the system we compile on. |
| 153 | */ |
| 154 | #ifndef FB_ACCEL_MATROX_MGAG400 |
| 155 | #define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */ |
| 156 | #endif |
| 157 | #ifndef FB_ACCEL_3DFX_BANSHEE |
| 158 | #define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */ |
| 159 | #endif |
| 160 | |
| 161 | /* These functions are defined in SDL_fbvideo.c */ |
| 162 | extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 *area); |
| 163 | extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 *area); |
| 164 | |
| 165 | /* These are utility functions for working with video surfaces */ |
| 166 | |
| 167 | static __inline__ void FB_AddBusySurface(SDL_Surface *surface) |
| 168 | { |
| 169 | ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
| 170 | } |
| 171 | |
| 172 | static __inline__ int FB_IsSurfaceBusy(SDL_Surface *surface) |
| 173 | { |
| 174 | return ((vidmem_bucket *)surface->hwdata)->dirty; |
| 175 | } |
| 176 | |
| 177 | static __inline__ void FB_WaitBusySurfaces(_THIS) |
| 178 | { |
| 179 | vidmem_bucket *bucket; |
| 180 | |
| 181 | /* Wait for graphic operations to complete */ |
| 182 | wait_idle(this); |
| 183 | |
| 184 | /* Clear all surface dirty bits */ |
| 185 | for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
| 186 | bucket->dirty = 0; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | static __inline__ void FB_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
| 191 | { |
| 192 | *x = (long)((char *)dst->pixels - mapped_mem)%this->screen->pitch; |
| 193 | *y = (long)((char *)dst->pixels - mapped_mem)/this->screen->pitch; |
| 194 | if ( dst == this->screen ) { |
| 195 | *x += this->offset_x; |
| 196 | *y += this->offset_y; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | #endif /* _SDL_fbvideo_h */ |