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annotate src/video/xbios/SDL_xbios_centscreen.h @ 1076:8d3b95ece376

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[PATCH] SDL_GetVideoMode() do not find the best video mode The current GetVideoMode() function stops at the first mode which has any dimensions smaller than the one asked, and gives the previous in the list. If I ask 336x224 with this list: 768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200 SDL will give me 640x400, because 640x200 as height smaller than what I asked. However the best mode is the smaller which has both dimensions bigger than the one asked (384x240 in my example). This patch fixes this, plus it does not rely on a sorted video mode list.
author Patrice Mandin <patmandin@gmail.com>
date Sun, 12 Jun 2005 16:12:55 +0000
parents fba6b67b4d60
children d910939febfa
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
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23 /*
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24 Centscreen extension definitions
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25
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26 Patrice Mandin
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27 */
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28
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29 #ifndef _SDL_xbios_centscreen_h
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30 #define _SDL_xbios_centscreen_h
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31
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32 #include <mint/falcon.h> /* for trap_14_xxx macros */
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33
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34 #include "SDL_xbios.h"
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35
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36 /*--- Defines ---*/
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37
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38 #ifndef C_CNTS
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39 #define C_CNTS 0x434e5453L
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40 #endif
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41
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42 #define CSCREEN_ENERGYSTAR (1<<9)
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43 #define CSCREEN_SAVER (1<<10)
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44 #define CSCREEN_VIRTUAL (1<<11)
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45 #define CSCREEN_EXTCLOCK_CT2 (1<<12)
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46 #define CSCREEN_EXTCLOCK (1<<13)
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47 #define CSCREEN_STANDARD (1<<14)
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48 #define CSCREEN_DEFAULT (1<<15)
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49
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50 /*--- Structures ---*/
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51
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52 typedef struct {
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53 unsigned short handle; /* videomode handle */
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54 unsigned short mode; /* Falcon videomode code */
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55 unsigned short physx; /* visible width */
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56 unsigned short physy; /* visible height */
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57 unsigned short plan; /* bitplanes */
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58 unsigned short logx; /* virtual width */
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59 unsigned short logy; /* virtual height */
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60 unsigned short eco; /* screen saver delay */
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61 unsigned short eco2; /* energy star screen saver delay */
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62 unsigned short wsize; /* screen width (mm) */
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63 unsigned short hsize; /* screen height (mm) */
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64 unsigned short dummy[21];
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65 unsigned char name[32]; /* videomode name */
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66 } __attribute__((packed)) centscreen_mode_t;
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67
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68 /*--- Functions prototypes ---*/
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69
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70 #define Vread(current_mode) \
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71 (void)trap_14_wl((short)0x41,(long)(current_mode))
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72 #define Vwrite(init_vdi, inparam, outparam) \
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73 (long)trap_14_wwll((short)0x42,(short)(init_vdi),(long)(inparam),(long)(outparam))
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74 #define Vattrib(inparam, outparam) \
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75 (void)trap_14_wll((short)0x43,(long)(inparam),(long)(outparam))
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76 #define Vcreate(inparam, outparam) \
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77 (void)trap_14_wll((short)0x44,(long)(inparam),(long)(outparam))
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78 #define Vdelete(handle) \
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79 (long)trap_14_ww((short)0x45,(short)(handle))
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80 #define Vfirst(mask,mode) \
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81 (long)trap_14_wll((short)0x46,(long)(mask),(long)(mode))
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82 #define Vnext(mask,mode) \
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83 (long)trap_14_wll((short)0x47,(long)(mask),(long)(mode))
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84 #define Vvalid(handle) \
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85 (long)trap_14_ww((short)0x48,(short)(handle))
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86 #define Vload() \
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87 (long)trap_14_w((short)0x49)
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88 #define Vsave() \
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89 (long)trap_14_w((short)0x4a)
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90 #define Vopen() \
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91 (long)trap_14_w((short)0x4b)
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92 #define Vclose() \
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93 (long)trap_14_w((short)0x4c)
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94 #define Vscroll(scrollmode) \
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95 (long)trap_14_ww((short)0x4d,(short)(scrollmode))
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96 #define Voffset() \
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97 (long)trap_14_w((short)0x4e)
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98 #define Vseek() \
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99 (long)trap_14_w((short)0x4f)
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100 #define Vlock(cmd) \
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101 (long)trap_14_ww((short)0x50,(short)(cmd))
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102 #define SetMon(montype) \
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103 (long)trap_14_ww((short)0x51,(short)(montype))
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104 #define MultiMon(cmd) \
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105 (long)trap_14_ww((short)0x52,(short)(cmd))
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106 #define VSizeComp() \
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107 (long)trap_14_w((short)0x53)
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108 #define Vsize(mode) \
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109 (long)trap_14_wl((short)0x54,(long)(mode))
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110
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111 /*--- Functions prototypes ---*/
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112
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113 int SDL_XBIOS_CentscreenInit(_THIS);
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114 void SDL_XBIOS_CentscreenSetmode(_THIS, int width, int height, int planes);
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115 void SDL_XBIOS_CentscreenRestore(_THIS, int prev_handle);
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116
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117 #endif /* _SDL_xbios_centscreen_h */