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annotate src/video/xbios/SDL_xbios.h @ 2663:0caed045d01b gsoc2008_audio_resampling

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General cleanup and fixed a buffer overrun bug. It may be necessary to normalize filter gain differently or something.
author Aaron Wishnick <schnarf@gmail.com>
date Tue, 12 Aug 2008 00:24:42 +0000
parents 2c835d58faad
children 99210400e8b9
rev   line source
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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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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 typedef struct SDL_VideoData
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31 {
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32 long cookie_vdo; /* _VDO cookie */
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33
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34 Uint16 old_modecode; /* Current video mode */
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35 void *old_vbase; /* Current pointer to video RAM */
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36 int old_numcol; /* Number of colors in saved palette */
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37 Uint32 old_palette[256]; /* Buffer to save current palette */
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38
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39 #if 0
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40 int old_video_mode; /* Old video mode before entering SDL */
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41 void *old_video_base; /* Old pointer to screen buffer */
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42 void *old_palette; /* Old palette */
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43 Uint32 old_num_colors; /* Nb of colors in saved palette */
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44 int num_modes; /* Number of xbios video modes */
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45 xbiosmode_t *mode_list; /* List of xbios video modes */
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46
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47 void *screens[2]; /* Pointers to aligned screen buffer */
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48 void *screensmem[2]; /* Pointers to screen buffer */
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49 void *shadowscreen; /* Shadow screen for c2p conversion */
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50 int doubleline; /* Double line mode ? */
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51 int frame_number; /* Number of frame for double buffer */
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52 int pitch; /* Destination line width for C2P */
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53 int width, height; /* Screen size for centered C2P */
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54
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55 SDL_bool centscreen; /* Centscreen extension present ? */
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56
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57 SDL_Rect *SDL_modelist[NUM_MODELISTS][SDL_NUMMODES + 1];
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58 xbiosmode_t *videomodes[NUM_MODELISTS][SDL_NUMMODES + 1];
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59 #endif
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60 } SDL_VideoData;
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61
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62 /* _VDO cookie values */
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63 enum
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64 {
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65 VDO_ST = 0,
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66 VDO_STE,
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67 VDO_TT,
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68 VDO_F30
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69 };
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70
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71 /* Monitor types */
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72 enum
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73 {
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74 MONITOR_MONO = 0,
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75 MONITOR_TV,
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76 MONITOR_VGA,
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77 MONITOR_RGB
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78 };
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79
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80 /* EgetShift masks */
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81 #define ES_BANK 0x000f
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82 #define ES_MODE 0x0700
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83 #define ES_GRAY 0x1000
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84 #define ES_SMEAR 0x8000
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85
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86 /* TT shifter modes */
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87 #define ST_LOW 0x0000
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88 #define ST_MED 0x0100
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89 #define ST_HIGH 0x0200
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90 #define TT_LOW 0x0700
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91 #define TT_MED 0x0300
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92 #define TT_HIGH 0x0600
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93
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94 #endif /* _SDL_xbios_h */
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95 /* vi: set ts=4 sw=4 expandtab: */