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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 Sam Lantinga |
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4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
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9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Lesser General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 #include "SDL_config.h" |
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23 |
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24 #ifndef _SDL_xbios_h |
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25 #define _SDL_xbios_h |
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26 |
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27 #include "SDL_stdinc.h" |
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28 #include "../SDL_sysvideo.h" |
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29 |
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30 /* Hidden "this" pointer for the video functions */ |
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31 #define _THIS SDL_VideoDevice *this |
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32 |
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33 /* TT video modes: 2 |
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34 Falcon RVB: 16 (could be *2 by adding PAL/NTSC modes) |
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35 Falcon VGA: 6 |
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36 ST low: 1 |
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37 */ |
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38 #define SDL_NUMMODES 16 |
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39 |
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40 typedef struct |
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41 { |
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42 Uint16 number; /* Video mode number */ |
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43 Uint16 width; /* Size */ |
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44 Uint16 height; |
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45 Uint16 depth; /* bits per plane */ |
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46 SDL_bool doubleline; /* Double the lines ? */ |
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47 } xbiosmode_t; |
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48 |
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49 /* Private display data */ |
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50 #define NUM_MODELISTS 2 /* 8 and 16 bits-per-pixel */ |
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51 |
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52 struct SDL_PrivateVideoData { |
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53 long cookie_vdo; |
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54 int old_video_mode; /* Old video mode before entering SDL */ |
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55 void *old_video_base; /* Old pointer to screen buffer */ |
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56 void *old_palette; /* Old palette */ |
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57 Uint32 old_num_colors; /* Nb of colors in saved palette */ |
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58 int num_modes; /* Number of xbios video modes */ |
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59 xbiosmode_t *mode_list; /* List of xbios video modes */ |
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60 |
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61 void *screens[2]; /* Pointers to aligned screen buffer */ |
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62 void *screensmem[2]; /* Pointers to screen buffer */ |
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63 void *shadowscreen; /* Shadow screen for c2p conversion */ |
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64 int doubleline; /* Double line mode ? */ |
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65 int frame_number; /* Number of frame for double buffer */ |
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66 int pitch; /* Destination line width for C2P */ |
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67 int width, height; /* Screen size for centered C2P */ |
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68 |
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69 SDL_bool centscreen; /* Centscreen extension present ? */ |
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70 |
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71 SDL_Rect *SDL_modelist[NUM_MODELISTS][SDL_NUMMODES+1]; |
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72 xbiosmode_t *videomodes[NUM_MODELISTS][SDL_NUMMODES+1]; |
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73 }; |
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74 |
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75 /* _VDO cookie values */ |
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76 enum { |
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77 VDO_ST=0, |
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78 VDO_STE, |
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79 VDO_TT, |
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80 VDO_F30 |
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81 }; |
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82 |
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83 /* Monitor types */ |
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84 enum { |
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85 MONITOR_MONO=0, |
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86 MONITOR_TV, |
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87 MONITOR_VGA, |
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88 MONITOR_RGB |
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89 }; |
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90 |
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91 /* EgetShift masks */ |
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92 #define ES_BANK 0x000f |
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93 #define ES_MODE 0x0700 |
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94 #define ES_GRAY 0x1000 |
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95 #define ES_SMEAR 0x8000 |
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96 |
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97 /* TT shifter modes */ |
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98 #define ST_LOW 0x0000 |
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99 #define ST_MED 0x0100 |
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100 #define ST_HIGH 0x0200 |
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101 #define TT_LOW 0x0700 |
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102 #define TT_MED 0x0300 |
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103 #define TT_HIGH 0x0600 |
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104 |
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105 /* Hidden structure -> variables names */ |
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106 #define SDL_modelist (this->hidden->SDL_modelist) |
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107 #define XBIOS_mutex (this->hidden->mutex) |
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108 #define XBIOS_cvdo (this->hidden->cookie_vdo) |
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109 #define XBIOS_oldpalette (this->hidden->old_palette) |
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110 #define XBIOS_oldnumcol (this->hidden->old_num_colors) |
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111 #define XBIOS_oldvbase (this->hidden->old_video_base) |
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112 #define XBIOS_oldvmode (this->hidden->old_video_mode) |
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113 #define XBIOS_nummodes (this->hidden->num_modes) |
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114 #define XBIOS_modelist (this->hidden->mode_list) |
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115 #define XBIOS_screens (this->hidden->screens) |
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116 #define XBIOS_screensmem (this->hidden->screensmem) |
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117 #define XBIOS_shadowscreen (this->hidden->shadowscreen) |
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118 #define XBIOS_videomodes (this->hidden->videomodes) |
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119 #define XBIOS_doubleline (this->hidden->doubleline) |
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120 #define XBIOS_fbnum (this->hidden->frame_number) |
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121 #define XBIOS_pitch (this->hidden->pitch) |
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122 #define XBIOS_width (this->hidden->width) |
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123 #define XBIOS_height (this->hidden->height) |
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124 #define XBIOS_centscreen (this->hidden->centscreen) |
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125 |
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126 /*--- Functions prototypes ---*/ |
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127 |
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128 void SDL_XBIOS_AddMode(_THIS, Uint16 modecode, Uint16 width, Uint16 height, |
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129 Uint16 depth, SDL_bool flags); |
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130 |
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131 #endif /* _SDL_xbios_h */ |