1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 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 (at) libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 #ifndef _SDL_xbios_h 25 #define _SDL_xbios_h 26 27 #include "SDL_stdinc.h" 28 #include "../SDL_sysvideo.h" 29 30 /* Hidden "this" pointer for the video functions */ 31 #define _THIS SDL_VideoDevice *this 32 33 #define XBIOSMODE_DOUBLELINE (1<<0) 34 #define XBIOSMODE_C2P (1<<1) 35 36 typedef struct 37 { 38 Uint16 number; /* Video mode number */ 39 Uint16 width; /* Size */ 40 Uint16 height; 41 Uint16 depth; /* bits per plane */ 42 Uint16 flags; 43 } xbiosmode_t; 44 45 /* Private display data */ 46 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ 47 48 struct SDL_PrivateVideoData { 49 long cookie_vdo; 50 long old_video_mode; /* Old video mode before entering SDL */ 51 void *old_video_base; /* Old pointer to screen buffer */ 52 void *old_palette; /* Old palette */ 53 Uint32 old_num_colors; /* Nb of colors in saved palette */ 54 55 void *screens[2]; /* Pointers to aligned screen buffer */ 56 void *screensmem[2]; /* Pointers to screen buffer */ 57 void *shadowscreen; /* Shadow screen for c2p conversion */ 58 int frame_number; /* Number of frame for double buffer */ 59 int pitch; /* Destination line width for C2P */ 60 61 SDL_bool centscreen; /* Centscreen extension present ? */ 62 63 xbiosmode_t *current; /* Current set mode */ 64 int SDL_nummodes[NUM_MODELISTS]; 65 SDL_Rect **SDL_modelist[NUM_MODELISTS]; 66 xbiosmode_t **SDL_xbiosmode[NUM_MODELISTS]; 67 }; 68 69 /* _VDO cookie values */ 70 enum { 71 VDO_ST=0, 72 VDO_STE, 73 VDO_TT, 74 VDO_F30, 75 VDO_MILAN 76 }; 77 78 /* Monitor types */ 79 enum { 80 MONITOR_MONO=0, 81 MONITOR_TV, 82 MONITOR_VGA, 83 MONITOR_RGB 84 }; 85 86 /* EgetShift masks */ 87 #define ES_MODE 0x0700 88 89 /* Hidden structure -> variables names */ 90 #define SDL_nummodes (this->hidden->SDL_nummodes) 91 #define SDL_modelist (this->hidden->SDL_modelist) 92 #define SDL_xbiosmode (this->hidden->SDL_xbiosmode) 93 #define XBIOS_mutex (this->hidden->mutex) 94 #define XBIOS_cvdo (this->hidden->cookie_vdo) 95 #define XBIOS_oldpalette (this->hidden->old_palette) 96 #define XBIOS_oldnumcol (this->hidden->old_num_colors) 97 #define XBIOS_oldvbase (this->hidden->old_video_base) 98 #define XBIOS_oldvmode (this->hidden->old_video_mode) 99 #define XBIOS_screens (this->hidden->screens) 100 #define XBIOS_screensmem (this->hidden->screensmem) 101 #define XBIOS_shadowscreen (this->hidden->shadowscreen) 102 #define XBIOS_fbnum (this->hidden->frame_number) 103 #define XBIOS_pitch (this->hidden->pitch) 104 #define XBIOS_centscreen (this->hidden->centscreen) 105 #define XBIOS_current (this->hidden->current) 106 107 /*--- Functions prototypes ---*/ 108 109 void SDL_XBIOS_AddMode(_THIS, int actually_add, const xbiosmode_t *modeinfo); 110 111 #endif /* _SDL_xbios_h */ 112
