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annotate src/video/xbios/SDL_xbios_centscreen.c @ 1807:f173f8fe1fc6

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author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 May 2006 15:00:30 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb 568c9b3c0167
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 /*
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25 Centscreen extension definitions
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26
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27 Patrice Mandin
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28 */
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29
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30 #include <mint/falcon.h>
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31
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32 #include "SDL_xbios.h"
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33 #include "SDL_xbios_centscreen.h"
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34
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35 int SDL_XBIOS_CentscreenInit(_THIS)
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36 {
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37 centscreen_mode_t curmode, listedmode;
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38 unsigned long result;
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39 int cur_handle; /* Current Centscreen mode handle */
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40
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41 /* Reset current mode list */
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42 if (XBIOS_modelist) {
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43 SDL_free(XBIOS_modelist);
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44 XBIOS_nummodes = 0;
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45 XBIOS_modelist = NULL;
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46 }
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47
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48 /* Add Centscreen modes */
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49 Vread(&curmode);
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50 cur_handle = curmode.handle;
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51 curmode.mode = curmode.physx = curmode.physy = curmode.plan =
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52 curmode.logx = curmode.logy = -1;
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53
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54 result = Vfirst(&curmode, &listedmode);
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55 if (result==0) {
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56 while (result==0) {
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57 /* Don't add modes with virtual screen */
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58 if ((listedmode.mode & CSCREEN_VIRTUAL)==0) {
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59 /* Don't add modes with bpp<8 */
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60 if (listedmode.plan>=8) {
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61 SDL_XBIOS_AddMode(this, listedmode.mode, listedmode.physx,
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62 listedmode.physy, listedmode.plan, SDL_FALSE
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63 );
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64 }
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65 }
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66 SDL_memcpy(&curmode, &listedmode, sizeof(centscreen_mode_t));
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67 curmode.mode = curmode.physx = curmode.physy = curmode.plan =
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68 curmode.logx = curmode.logy = -1;
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69 result = Vnext(&curmode, &listedmode);
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70 }
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71 } else {
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72 fprintf(stderr, "No suitable Centscreen modes\n");
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73 }
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74
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75 return cur_handle;
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76 }
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77
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78 void SDL_XBIOS_CentscreenSetmode(_THIS, int width, int height, int planes)
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79 {
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80 centscreen_mode_t newmode, curmode;
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81
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82 newmode.handle = newmode.mode = newmode.logx = newmode.logy = -1;
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83 newmode.physx = width;
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84 newmode.physy = height;
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85 newmode.plan = planes;
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86 Vwrite(0, &newmode, &curmode);
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87
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88 /* Disable screensaver */
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89 Vread(&newmode);
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90 newmode.mode &= ~(CSCREEN_SAVER|CSCREEN_ENERGYSTAR);
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91 Vwrite(0, &newmode, &curmode);
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92 }
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93
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94 void SDL_XBIOS_CentscreenRestore(_THIS, int prev_handle)
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95 {
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96 centscreen_mode_t newmode, curmode;
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97
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98 /* Restore old video mode */
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99 newmode.handle = prev_handle;
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100 newmode.mode = newmode.physx = newmode.physy = newmode.plan =
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101 newmode.logx = newmode.logy = -1;
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102 Vwrite(0, &newmode, &curmode);
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103 }