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annotate src/video/xbios/SDL_xbios_blowup.c @ 4383:daf9e6037596 SDL-1.2

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Gregory Smith Another one for the "How did this ever work?" file: when DX5_HandleMessage is called with WM_ACTIVATEAPP, it goes past the end of the 2-element SDL_DIdev array and if there doesn't happen to be a 0 in the memory next to it, crashes. Patch against SVN attached.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 15 Nov 2009 17:21:24 +0000
parents 6405314a7c07
children
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 Blowup 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_blowup.h"
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34
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35 void SDL_XBIOS_ListBlowupModes(_THIS, int actually_add, blow_cookie_t *cookie_blow)
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36 {
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37 int i, j, num_mode, bank;
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38 blow_mode_t *blow_mode;
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39 xbiosmode_t modeinfo;
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41 if (actually_add) {
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42 /* Set bit 15 for old modes */
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43 for (i=0;i<NUM_MODELISTS;i++) {
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44 if ( SDL_xbiosmode[i] != NULL ) {
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45 for ( j=0; SDL_xbiosmode[i][j]; ++j ) {
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46 SDL_xbiosmode[i][j]->number |= 1<<15;
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47 }
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48 }
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49 }
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50 }
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51
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52 /* Add Blowup modes for 8 and 16 bpp */
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53 for (num_mode=3; num_mode<5; num_mode++) {
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54 bank = cookie_blow->num_mode[num_mode];
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55 blow_mode = &(cookie_blow->blowup_modes[num_mode+(bank*5)]);
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56
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57 /* Check extended mode enabled */
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58 if (blow_mode->enabled == 0) {
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59 /* Check monitor needed for this mode */
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60 if ((blow_mode->monitor == cookie_blow->montype)
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61 || ((blow_mode->monitor == MONITOR_TV)
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62 && (cookie_blow->montype == MONITOR_RGB))
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63 || ((blow_mode->monitor == MONITOR_RGB)
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64 && (cookie_blow->montype == MONITOR_TV)))
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65 {
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66 /* we can use this extended mode */
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67 modeinfo.number = (num_mode == 3 ? BPS8 : BPS16);
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68 modeinfo.width = blow_mode->width + 1;
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69 modeinfo.height = blow_mode->height + 1;
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70 modeinfo.depth = (num_mode == 3 ? 8 : 16);
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71 modeinfo.flags = (modeinfo.depth == 8 ? XBIOSMODE_C2P : 0);
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73 SDL_XBIOS_AddMode(this, actually_add, &modeinfo);
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74 }
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75 }
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76 }
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77 }