annotate src/video/riscos/SDL_riscosvideo.c @ 2135:0313af081a84

Merge iconv const changes from 1.2 I'm not entirely happy with them. Maybe the right way to go is to leave SDL_iconv() taking a non-const inbuf? How often are we converting const strings anyway?
author Sam Lantinga <slouken@libsdl.org>
date Thu, 28 Jun 2007 06:57:08 +0000
parents c121d94672cb
children e1da92da346c
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 File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability
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26 23 March 2003
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27
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28 Implements RISC OS display device management.
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29 Routines for full screen and wimp modes are split
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30 into other source files.
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31 */
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32
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33 #include "SDL_video.h"
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34 #include "SDL_mouse.h"
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35 #include "SDL_syswm.h"
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36 #include "../SDL_sysvideo.h"
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37 #include "../SDL_pixels_c.h"
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38 #include "../../events/SDL_events_c.h"
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39
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40 #include "SDL_riscostask.h"
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41 #include "SDL_riscosvideo.h"
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42 #include "SDL_riscosevents_c.h"
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43 #include "SDL_riscosmouse_c.h"
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44
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45 #include "kernel.h"
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46 #include "swis.h"
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47
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48 #define RISCOSVID_DRIVER_NAME "riscos"
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49
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50 /* Initialization/Query functions */
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51 static int RISCOS_VideoInit(_THIS, SDL_PixelFormat * vformat);
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52 static void RISCOS_VideoQuit(_THIS);
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53
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54 static SDL_Rect **RISCOS_ListModes(_THIS, SDL_PixelFormat * format,
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55 Uint32 flags);
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56 static SDL_Surface *RISCOS_SetVideoMode(_THIS, SDL_Surface * current,
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57 int width, int height, int bpp,
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58 Uint32 flags);
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59
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60 int RISCOS_GetWmInfo(_THIS, SDL_SysWMinfo * info);
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61
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62 int RISCOS_ToggleFullScreen(_THIS, int fullscreen);
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63 /* Mouse checking */
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64 void RISCOS_CheckMouseMode(_THIS);
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65 extern SDL_GrabMode RISCOS_GrabInput(_THIS, SDL_GrabMode mode);
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66
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67 /* Fullscreen mode functions */
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68 extern SDL_Surface *FULLSCREEN_SetVideoMode(_THIS, SDL_Surface * current,
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69 int width, int height, int bpp,
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70 Uint32 flags);
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71 extern void FULLSCREEN_BuildModeList(_THIS);
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72 extern void FULLSCREEN_SetDeviceMode(_THIS);
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73 extern int FULLSCREEN_ToggleFromWimp(_THIS);
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74
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75 /* Wimp mode functions */
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76 extern SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface * current,
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77 int width, int height, int bpp,
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78 Uint32 flags);
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79 extern void WIMP_DeleteWindow(_THIS);
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80 extern int WIMP_ToggleFromFullScreen(_THIS);
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81
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82 /* Hardware surface functions - common to WIMP and FULLSCREEN */
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83 static int RISCOS_AllocHWSurface(_THIS, SDL_Surface * surface);
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84 static int RISCOS_LockHWSurface(_THIS, SDL_Surface * surface);
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85 static void RISCOS_UnlockHWSurface(_THIS, SDL_Surface * surface);
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86 static void RISCOS_FreeHWSurface(_THIS, SDL_Surface * surface);
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87
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88 /* RISC OS driver bootstrap functions */
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89
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90 static int
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91 RISCOS_Available(void)
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92 {
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93 return (1);
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94 }
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95
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96 static void
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97 RISCOS_DeleteDevice(SDL_VideoDevice * device)
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98 {
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99 SDL_free(device->hidden);
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100 SDL_free(device);
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101 }
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102
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103 static SDL_VideoDevice *
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104 RISCOS_CreateDevice(int devindex)
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105 {
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106 SDL_VideoDevice *device;
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107
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108 /* Initialize all variables that we clean on shutdown */
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109 device = (SDL_VideoDevice *) SDL_malloc(sizeof(SDL_VideoDevice));
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110 if (device) {
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111 SDL_memset(device, 0, (sizeof *device));
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112 device->hidden = (struct SDL_PrivateVideoData *)
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113 SDL_malloc((sizeof *device->hidden));
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114 }
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115 if ((device == NULL) || (device->hidden == NULL)) {
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116 SDL_OutOfMemory();
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117 if (device) {
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118 SDL_free(device);
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119 }
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120 return (0);
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121 }
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122 SDL_memset(device->hidden, 0, (sizeof *device->hidden));
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123
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124 /* Set the function pointers */
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125 device->VideoInit = RISCOS_VideoInit;
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126 device->VideoQuit = RISCOS_VideoQuit;
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127
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128 device->ListModes = RISCOS_ListModes;
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129 device->SetVideoMode = RISCOS_SetVideoMode;
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130 device->CreateYUVOverlay = NULL;
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131 device->AllocHWSurface = RISCOS_AllocHWSurface;
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132 device->CheckHWBlit = NULL;
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133 device->FillHWRect = NULL;
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134 device->SetHWColorKey = NULL;
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diff changeset
135 device->SetHWAlpha = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
136 device->LockHWSurface = RISCOS_LockHWSurface;
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137 device->UnlockHWSurface = RISCOS_UnlockHWSurface;
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diff changeset
138 device->FreeHWSurface = RISCOS_FreeHWSurface;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
139
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diff changeset
140 device->FreeWMCursor = RISCOS_FreeWMCursor;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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141 device->CreateWMCursor = RISCOS_CreateWMCursor;
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142 device->CheckMouseMode = RISCOS_CheckMouseMode;
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143 device->GrabInput = RISCOS_GrabInput;
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144
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145 device->InitOSKeymap = RISCOS_InitOSKeymap;
630
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146
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147 device->GetWMInfo = RISCOS_GetWmInfo;
630
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148
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149 device->free = RISCOS_DeleteDevice;
630
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150
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parents:
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151 /* Can't get Toggle screen to work if program starts up in Full screen mode so
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152 disable it here and re-enable it when a wimp screen is chosen */
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153 device->ToggleFullScreen = NULL; /*RISCOS_ToggleFullScreen; */
630
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154
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155 /* Set other entries for fullscreen mode */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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156 FULLSCREEN_SetDeviceMode(device);
630
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157
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158 /* Mouse pointer needs to use the WIMP ShowCursor version so
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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159 that it doesn't modify the pointer until the SDL Window is
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
160 entered or the application goes full screen */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
161 device->ShowWMCursor = WIMP_ShowWMCursor;
1208
d90b362628ea From: "alan buckley" <alan_baa@hotmail.com>
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162
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163 return device;
630
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164 }
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
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165
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166 VideoBootStrap RISCOS_bootstrap = {
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167 RISCOSVID_DRIVER_NAME, "RISC OS video driver",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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168 RISCOS_Available, RISCOS_CreateDevice
630
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169 };
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170
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diff changeset
171
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diff changeset
172 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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173 RISCOS_VideoInit(_THIS, SDL_PixelFormat * vformat)
630
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174 {
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diff changeset
175 _kernel_swi_regs regs;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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176 int vars[4], vals[3];
630
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177
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diff changeset
178 if (RISCOS_InitTask() == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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179 SDL_SetError("Unable to start task");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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180 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
181 }
630
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182
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183 vars[0] = 9; /* Log base 2 bpp */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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184 vars[1] = 11; /* XWndLimit - num x pixels -1 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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185 vars[2] = 12; /* YWndLimit - num y pixels -1 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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186 vars[3] = -1; /* Terminate list */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
187 regs.r[0] = (int) vars;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
188 regs.r[1] = (int) vals;
630
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189
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190 _kernel_swi(OS_ReadVduVariables, &regs, &regs);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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191 vformat->BitsPerPixel = (1 << vals[0]);
630
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192
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diff changeset
193 /* Determine the current screen size */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
194 this->info.current_w = vals[1] + 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
195 this->info.current_h = vals[2] + 1;
1545
8d9bb0cf2c2a Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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diff changeset
196
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diff changeset
197 /* Minimum bpp for SDL is 8 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
198 if (vformat->BitsPerPixel < 8)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
199 vformat->BitsPerPixel = 8;
630
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200
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diff changeset
201
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diff changeset
202 switch (vformat->BitsPerPixel) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
203 case 15:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
204 case 16:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
205 vformat->Bmask = 0x00007c00;
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206 vformat->Gmask = 0x000003e0;
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diff changeset
207 vformat->Rmask = 0x0000001f;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
208 vformat->BitsPerPixel = 16; /* SDL wants actual number of bits used */
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diff changeset
209 vformat->BytesPerPixel = 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
210 break;
630
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diff changeset
211
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diff changeset
212 case 24:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
213 case 32:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
214 vformat->Bmask = 0x00ff0000;
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215 vformat->Gmask = 0x0000ff00;
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diff changeset
216 vformat->Rmask = 0x000000ff;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
217 vformat->BytesPerPixel = 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
218 break;
630
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diff changeset
219
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diff changeset
220 default:
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diff changeset
221 vformat->Bmask = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
222 vformat->Gmask = 0;
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223 vformat->Rmask = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
224 vformat->BytesPerPixel = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
225 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
226 }
630
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227
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228 /* Fill in some window manager capabilities */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
229 this->info.wm_available = 1;
630
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diff changeset
230
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diff changeset
231 /* We're done! */
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232 return (0);
630
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diff changeset
233 }
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
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diff changeset
234
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
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diff changeset
235 /* Note: If we are terminated, this could be called in the middle of
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236 another SDL video routine -- notably UpdateRects.
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237 */
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diff changeset
238 void
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239 RISCOS_VideoQuit(_THIS)
630
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240 {
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241 RISCOS_ExitTask();
630
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242
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diff changeset
243 if (this->hidden->alloc_bank)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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244 SDL_free(this->hidden->alloc_bank);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
245 this->hidden->alloc_bank = 0;
630
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diff changeset
246 }
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
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diff changeset
247
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parents:
diff changeset
248
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diff changeset
249 SDL_Rect **
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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250 RISCOS_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags)
630
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parents:
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251 {
1895
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diff changeset
252 if (flags & SDL_FULLSCREEN) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
253 /* Build mode list when first required. */
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diff changeset
254 if (SDL_nummodes[0] == 0)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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255 FULLSCREEN_BuildModeList(this);
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256
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257 return (SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]);
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258 } else
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259 return (SDL_Rect **) - 1;
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260 }
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261
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262
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263 /* Set up video mode */
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264 SDL_Surface *
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265 RISCOS_SetVideoMode(_THIS, SDL_Surface * current,
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266 int width, int height, int bpp, Uint32 flags)
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267 {
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268 if (flags & SDL_FULLSCREEN) {
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269 RISCOS_StoreWimpMode();
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270 /* Dump wimp window on switch to full screen */
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271 if (this->hidden->window_handle)
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272 WIMP_DeleteWindow(this);
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273
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274 return FULLSCREEN_SetVideoMode(this, current, width, height, bpp,
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275 flags);
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276 } else {
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277 RISCOS_RestoreWimpMode();
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278 return WIMP_SetVideoMode(this, current, width, height, bpp, flags);
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279 }
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280 }
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281
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282
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283 /* We don't actually allow hardware surfaces other than the main one */
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284 static int
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285 RISCOS_AllocHWSurface(_THIS, SDL_Surface * surface)
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286 {
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287 return (-1);
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288 }
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289 static void
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290 RISCOS_FreeHWSurface(_THIS, SDL_Surface * surface)
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291 {
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292 return;
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293 }
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294
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295 /* We need to wait for vertical retrace on page flipped displays */
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296 static int
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297 RISCOS_LockHWSurface(_THIS, SDL_Surface * surface)
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298 {
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299 return (0);
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300 }
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301
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302 static void
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303 RISCOS_UnlockHWSurface(_THIS, SDL_Surface * surface)
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304 {
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305 return;
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306 }
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307
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308
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309 int
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310 RISCOS_GetWmInfo(_THIS, SDL_SysWMinfo * info)
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311 {
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312 SDL_VERSION(&(info->version));
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313 info->wimpVersion = RISCOS_GetWimpVersion();
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314 info->taskHandle = RISCOS_GetTaskHandle();
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315 info->window = this->hidden->window_handle;
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316
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317 return 1;
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318 }
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319
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320 /* Toggle full screen mode.
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321 Returns 1 if successful otherwise 0
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322 */
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323
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324 int
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325 RISCOS_ToggleFullScreen(_THIS, int fullscreen)
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326 {
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327 if (fullscreen) {
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328 return FULLSCREEN_ToggleFromWimp(this);
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329 } else {
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330 return WIMP_ToggleFromFullScreen(this);
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331 }
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332
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333 return 0;
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334 }
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335
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336 /* vi: set ts=4 sw=4 expandtab: */