Mercurial > sdl-ios-xcode

annotate src/video/xbios/SDL_xbios_centscreen.h @ 2661:d38309be5178 gsoc2008_audio_resampling

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The windowed sinc filter generation code seems to be working fine. The FIR filtering code is also now working reasonably well. Occasionally the FIR filter will pop, but setting the normalization factor lower seems to help this. I suspect the problem is in the fixed point multiply/add. I also have a hunch the zero stuffing/sample discarding code is not correct, and I'll look at that soon to get it sorted out.
author Aaron Wishnick <schnarf@gmail.com>
date Wed, 02 Jul 2008 08:04:50 +0000
parents c121d94672cb
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) 1997-2004 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 #ifndef _SDL_xbios_centscreen_h
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31 #define _SDL_xbios_centscreen_h
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32
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33 #include <mint/falcon.h> /* for trap_14_xxx macros */
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34
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35 #include "SDL_xbios.h"
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36
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37 /*--- Defines ---*/
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38
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39 #ifndef C_CNTS
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40 #define C_CNTS 0x434e5453L
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41 #endif
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42
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43 #define CSCREEN_ENERGYSTAR (1<<9)
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44 #define CSCREEN_SAVER (1<<10)
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45 #define CSCREEN_VIRTUAL (1<<11)
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46 #define CSCREEN_EXTCLOCK_CT2 (1<<12)
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47 #define CSCREEN_EXTCLOCK (1<<13)
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48 #define CSCREEN_STANDARD (1<<14)
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49 #define CSCREEN_DEFAULT (1<<15)
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50
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51 /*--- Structures ---*/
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52
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53 typedef struct
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54 {
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55 unsigned short handle; /* videomode handle */
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56 unsigned short mode; /* Falcon videomode code */
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57 unsigned short physx; /* visible width */
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58 unsigned short physy; /* visible height */
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59 unsigned short plan; /* bitplanes */
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60 unsigned short logx; /* virtual width */
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61 unsigned short logy; /* virtual height */
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62 unsigned short eco; /* screen saver delay */
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63 unsigned short eco2; /* energy star screen saver delay */
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64 unsigned short wsize; /* screen width (mm) */
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65 unsigned short hsize; /* screen height (mm) */
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66 unsigned short dummy[21];
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67 unsigned char name[32]; /* videomode name */
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68 } __attribute__ ((packed)) centscreen_mode_t;
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69
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70 /*--- Functions prototypes ---*/
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71
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72 #define Vread(current_mode) \
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73 (void)trap_14_wl((short)0x41,(long)(current_mode))
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74 #define Vwrite(init_vdi, inparam, outparam) \
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75 (long)trap_14_wwll((short)0x42,(short)(init_vdi),(long)(inparam),(long)(outparam))
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76 #define Vattrib(inparam, outparam) \
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77 (void)trap_14_wll((short)0x43,(long)(inparam),(long)(outparam))
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78 #define Vcreate(inparam, outparam) \
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79 (void)trap_14_wll((short)0x44,(long)(inparam),(long)(outparam))
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80 #define Vdelete(handle) \
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81 (long)trap_14_ww((short)0x45,(short)(handle))
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82 #define Vfirst(mask,mode) \
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83 (long)trap_14_wll((short)0x46,(long)(mask),(long)(mode))
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84 #define Vnext(mask,mode) \
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85 (long)trap_14_wll((short)0x47,(long)(mask),(long)(mode))
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86 #define Vvalid(handle) \
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87 (long)trap_14_ww((short)0x48,(short)(handle))
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88 #define Vload() \
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89 (long)trap_14_w((short)0x49)
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90 #define Vsave() \
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91 (long)trap_14_w((short)0x4a)
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92 #define Vopen() \
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93 (long)trap_14_w((short)0x4b)
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94 #define Vclose() \
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95 (long)trap_14_w((short)0x4c)
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96 #define Vscroll(scrollmode) \
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97 (long)trap_14_ww((short)0x4d,(short)(scrollmode))
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98 #define Voffset() \
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99 (long)trap_14_w((short)0x4e)
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100 #define Vseek() \
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101 (long)trap_14_w((short)0x4f)
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102 #define Vlock(cmd) \
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103 (long)trap_14_ww((short)0x50,(short)(cmd))
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104 #define SetMon(montype) \
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105 (long)trap_14_ww((short)0x51,(short)(montype))
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106 #define MultiMon(cmd) \
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107 (long)trap_14_ww((short)0x52,(short)(cmd))
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108 #define VSizeComp() \
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109 (long)trap_14_w((short)0x53)
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110 #define Vsize(mode) \
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111 (long)trap_14_wl((short)0x54,(long)(mode))
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112
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113 /*--- Functions prototypes ---*/
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114
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115 int SDL_XBIOS_CentscreenInit(_THIS);
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116 void SDL_XBIOS_CentscreenSetmode(_THIS, int width, int height, int planes);
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117 void SDL_XBIOS_CentscreenRestore(_THIS, int prev_handle);
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118
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119 #endif /* _SDL_xbios_centscreen_h */
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120 /* vi: set ts=4 sw=4 expandtab: */