1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2006 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 /* TT video modes: 2 34 Falcon RVB: 16 (could be *2 by adding PAL/NTSC modes) 35 Falcon VGA: 6 36 ST low: 1 37 */ 38 #define SDL_NUMMODES 16 39 40 typedef struct 41 { 42 Uint16 number; /* Video mode number */ 43 Uint16 width; /* Size */ 44 Uint16 height; 45 Uint16 depth; /* bits per plane */ 46 SDL_bool doubleline; /* Double the lines ? */ 47 } xbiosmode_t; 48 49 /* Private display data */ 50 #define NUM_MODELISTS 2 /* 8 and 16 bits-per-pixel */ 51 52 struct SDL_PrivateVideoData { 53 long cookie_vdo; 54 int old_video_mode; /* Old video mode before entering SDL */ 55 void *old_video_base; /* Old pointer to screen buffer */ 56 void *old_palette; /* Old palette */ 57 Uint32 old_num_colors; /* Nb of colors in saved palette */ 58 int num_modes; /* Number of xbios video modes */ 59 xbiosmode_t *mode_list; /* List of xbios video modes */ 60 61 void *screens[2]; /* Pointers to aligned screen buffer */ 62 void *screensmem[2]; /* Pointers to screen buffer */ 63 void *shadowscreen; /* Shadow screen for c2p conversion */ 64 int doubleline; /* Double line mode ? */ 65 int frame_number; /* Number of frame for double buffer */ 66 int pitch; /* Destination line width for C2P */ 67 int width, height; /* Screen size for centered C2P */ 68 69 SDL_bool centscreen; /* Centscreen extension present ? */ 70 71 SDL_Rect *SDL_modelist[NUM_MODELISTS][SDL_NUMMODES+1]; 72 xbiosmode_t *videomodes[NUM_MODELISTS][SDL_NUMMODES+1]; 73 }; 74 75 /* _VDO cookie values */ 76 enum { 77 VDO_ST=0, 78 VDO_STE, 79 VDO_TT, 80 VDO_F30 81 }; 82 83 /* Monitor types */ 84 enum { 85 MONITOR_MONO=0, 86 MONITOR_TV, 87 MONITOR_VGA, 88 MONITOR_RGB 89 }; 90 91 /* EgetShift masks */ 92 #define ES_BANK 0x000f 93 #define ES_MODE 0x0700 94 #define ES_GRAY 0x1000 95 #define ES_SMEAR 0x8000 96 97 /* TT shifter modes */ 98 #define ST_LOW 0x0000 99 #define ST_MED 0x0100 100 #define ST_HIGH 0x0200 101 #define TT_LOW 0x0700 102 #define TT_MED 0x0300 103 #define TT_HIGH 0x0600 104 105 /* Hidden structure -> variables names */ 106 #define SDL_modelist (this->hidden->SDL_modelist) 107 #define XBIOS_mutex (this->hidden->mutex) 108 #define XBIOS_cvdo (this->hidden->cookie_vdo) 109 #define XBIOS_oldpalette (this->hidden->old_palette) 110 #define XBIOS_oldnumcol (this->hidden->old_num_colors) 111 #define XBIOS_oldvbase (this->hidden->old_video_base) 112 #define XBIOS_oldvmode (this->hidden->old_video_mode) 113 #define XBIOS_nummodes (this->hidden->num_modes) 114 #define XBIOS_modelist (this->hidden->mode_list) 115 #define XBIOS_screens (this->hidden->screens) 116 #define XBIOS_screensmem (this->hidden->screensmem) 117 #define XBIOS_shadowscreen (this->hidden->shadowscreen) 118 #define XBIOS_videomodes (this->hidden->videomodes) 119 #define XBIOS_doubleline (this->hidden->doubleline) 120 #define XBIOS_fbnum (this->hidden->frame_number) 121 #define XBIOS_pitch (this->hidden->pitch) 122 #define XBIOS_width (this->hidden->width) 123 #define XBIOS_height (this->hidden->height) 124 #define XBIOS_centscreen (this->hidden->centscreen) 125 126 /*--- Functions prototypes ---*/ 127 128 void SDL_XBIOS_AddMode(_THIS, Uint16 modecode, Uint16 width, Uint16 height, 129 Uint16 depth, SDL_bool flags); 130 131 #endif /* _SDL_xbios_h */ 132
