Mercurial > sdl-ios-xcode
annotate src/video/fbcon/SDL_fbvideo.h @ 894:1d1a823904d8
Don't crash if the stretch routines are used on hardware surfaces
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 16 May 2004 21:08:55 +0000 |
| parents | b8d311d90021 |
| children | 718d00094f82 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #ifndef _SDL_fbvideo_h | |
| 29 #define _SDL_fbvideo_h | |
| 30 | |
| 31 #include <sys/types.h> | |
| 32 #include <termios.h> | |
| 33 #include <linux/fb.h> | |
| 34 | |
| 35 #include "SDL_mouse.h" | |
| 36 #include "SDL_mutex.h" | |
| 37 #include "SDL_sysvideo.h" | |
| 38 | |
| 39 /* Hidden "this" pointer for the video functions */ | |
| 40 #define _THIS SDL_VideoDevice *this | |
| 41 | |
| 42 | |
| 43 /* This is the structure we use to keep track of video memory */ | |
| 44 typedef struct vidmem_bucket { | |
| 45 struct vidmem_bucket *prev; | |
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46 int used; |
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47 int dirty; |
| 0 | 48 char *base; |
| 49 unsigned int size; | |
| 50 struct vidmem_bucket *next; | |
| 51 } vidmem_bucket; | |
| 52 | |
| 53 /* Private display data */ | |
| 54 struct SDL_PrivateVideoData { | |
| 55 int console_fd; | |
| 56 struct fb_var_screeninfo cache_vinfo; | |
| 57 struct fb_var_screeninfo saved_vinfo; | |
| 58 int saved_cmaplen; | |
| 59 __u16 *saved_cmap; | |
| 60 | |
| 61 int current_vt; | |
| 62 int saved_vt; | |
| 63 int keyboard_fd; | |
| 64 int saved_kbd_mode; | |
| 65 struct termios saved_kbd_termios; | |
| 66 | |
| 67 int mouse_fd; | |
| 68 | |
| 69 char *mapped_mem; | |
| 70 int mapped_memlen; | |
| 71 int mapped_offset; | |
| 72 char *mapped_io; | |
| 73 long mapped_iolen; | |
| 74 int flip_page; | |
| 75 char *flip_address[2]; | |
| 76 | |
| 77 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ | |
| 78 int SDL_nummodes[NUM_MODELISTS]; | |
| 79 SDL_Rect **SDL_modelist[NUM_MODELISTS]; | |
| 80 | |
| 81 vidmem_bucket surfaces; | |
| 82 int surfaces_memtotal; | |
| 83 int surfaces_memleft; | |
| 84 | |
| 85 SDL_mutex *hw_lock; | |
| 86 | |
| 87 void (*wait_vbl)(_THIS); | |
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88 void (*wait_idle)(_THIS); |
| 0 | 89 }; |
| 90 /* Old variable names */ | |
| 91 #define console_fd (this->hidden->console_fd) | |
| 92 #define current_vt (this->hidden->current_vt) | |
| 93 #define saved_vt (this->hidden->saved_vt) | |
| 94 #define keyboard_fd (this->hidden->keyboard_fd) | |
| 95 #define saved_kbd_mode (this->hidden->saved_kbd_mode) | |
| 96 #define saved_kbd_termios (this->hidden->saved_kbd_termios) | |
| 97 #define mouse_fd (this->hidden->mouse_fd) | |
| 98 #define cache_vinfo (this->hidden->cache_vinfo) | |
| 99 #define saved_vinfo (this->hidden->saved_vinfo) | |
| 100 #define saved_cmaplen (this->hidden->saved_cmaplen) | |
| 101 #define saved_cmap (this->hidden->saved_cmap) | |
| 102 #define mapped_mem (this->hidden->mapped_mem) | |
| 103 #define mapped_memlen (this->hidden->mapped_memlen) | |
| 104 #define mapped_offset (this->hidden->mapped_offset) | |
| 105 #define mapped_io (this->hidden->mapped_io) | |
| 106 #define mapped_iolen (this->hidden->mapped_iolen) | |
| 107 #define flip_page (this->hidden->flip_page) | |
| 108 #define flip_address (this->hidden->flip_address) | |
| 109 #define SDL_nummodes (this->hidden->SDL_nummodes) | |
| 110 #define SDL_modelist (this->hidden->SDL_modelist) | |
| 111 #define surfaces (this->hidden->surfaces) | |
| 112 #define surfaces_memtotal (this->hidden->surfaces_memtotal) | |
| 113 #define surfaces_memleft (this->hidden->surfaces_memleft) | |
| 114 #define hw_lock (this->hidden->hw_lock) | |
| 115 #define wait_vbl (this->hidden->wait_vbl) | |
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116 #define wait_idle (this->hidden->wait_idle) |
| 0 | 117 |
| 118 /* Accelerator types that are supported by the driver, but are not | |
| 119 necessarily in the kernel headers on the system we compile on. | |
| 120 */ | |
| 121 #ifndef FB_ACCEL_MATROX_MGAG400 | |
| 122 #define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */ | |
| 123 #endif | |
| 124 #ifndef FB_ACCEL_3DFX_BANSHEE | |
| 125 #define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */ | |
| 126 #endif | |
| 127 | |
| 128 /* These functions are defined in SDL_fbvideo.c */ | |
| 129 extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 *area); | |
| 130 extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 *area); | |
| 131 | |
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132 /* These are utility functions for working with video surfaces */ |
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133 |
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134 static __inline__ void FB_AddBusySurface(SDL_Surface *surface) |
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135 { |
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136 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
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137 } |
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138 |
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139 static __inline__ int FB_IsSurfaceBusy(SDL_Surface *surface) |
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140 { |
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141 return ((vidmem_bucket *)surface->hwdata)->dirty; |
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142 } |
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143 |
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144 static __inline__ void FB_WaitBusySurfaces(_THIS) |
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145 { |
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146 vidmem_bucket *bucket; |
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147 |
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148 /* Wait for graphic operations to complete */ |
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149 wait_idle(this); |
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150 |
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151 /* Clear all surface dirty bits */ |
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152 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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153 bucket->dirty = 0; |
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154 } |
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155 } |
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156 |
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157 static __inline__ void FB_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
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158 { |
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159 *x = (long)((char *)dst->pixels - mapped_mem)%this->screen->pitch; |
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160 *y = (long)((char *)dst->pixels - mapped_mem)/this->screen->pitch; |
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161 if ( dst == this->screen ) { |
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162 *x += this->offset_x; |
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163 *y += this->offset_y; |
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164 } |
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165 } |
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166 |
| 0 | 167 #endif /* _SDL_fbvideo_h */ |