src/video/fbcon/SDL_fbvideo.h

   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 */