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annotate src/video/ataricommon/SDL_xbiosevents.c @ 4165:3b8ac3d311a2 SDL-1.2

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Hello. This patch provides basic support for video on the Sony PS3 Linux framebuffer. Scaling, format-conversion, and drawing is done from the SPEs, so there is little performance impact to PPE applications. This is by no means production quality code, but it is a very good start and a good example of how to use the PS3's hardware capabilities to accelerate video playback on the box. The driver has been verified to work with ffplay, mplayer and xine. This piece of software has been developed at the IBM R&D Lab in Boeblingen, Germany and is now returned to the community. Enjoy ! Signed-off-by: D.Herrendoerfer < d.herrendoerfer [at] de [dot] ibm [dot] com >
author Sam Lantinga <slouken@libsdl.org>
date Thu, 02 Apr 2009 04:06:55 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 * XBIOS mouse & joystick vectors
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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/osbind.h>
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31
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32 #include "../../events/SDL_events_c.h"
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33 #include "SDL_xbiosevents_c.h"
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34 #include "SDL_xbiosinterrupt_s.h"
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35
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36 /* Variables */
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37
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38 int SDL_AtariXbios_enabled=0;
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39
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40 /* Local variables */
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41
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42 static _KBDVECS *kbdvecs; /* Pointer to access system vectors */
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43 static Uint16 atari_prevmouseb; /* buttons */
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44
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45 /* Functions */
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46
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47 void SDL_AtariXbios_InstallVectors(int vectors_mask)
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48 {
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49 void *oldpile;
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50
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51 /* Clear variables */
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52 SDL_AtariXbios_mouselock =
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53 SDL_AtariXbios_mouseb =
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54 SDL_AtariXbios_mousex =
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55 SDL_AtariXbios_mousey =
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56 SDL_AtariXbios_joystick =
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57 atari_prevmouseb = 0;
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58
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59 if (vectors_mask==0) {
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60 SDL_AtariXbios_enabled=0;
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61 return;
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62 }
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63
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64 /* Read IKBD vectors base */
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65 kbdvecs=Kbdvbase();
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66
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67 /* Go to supervisor mode */
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68 oldpile=(void *)Super(0);
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69
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70 /* Install our vectors */
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71 SDL_AtariXbios_Install(
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72 kbdvecs,
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73 (vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL,
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74 (vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL
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75 );
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76
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77 /* Back to user mode */
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78 Super(oldpile);
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79
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80 SDL_AtariXbios_enabled=1;
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81 }
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82
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83 void SDL_AtariXbios_RestoreVectors(void)
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84 {
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85 void *oldpile;
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86
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87 if (SDL_AtariXbios_enabled==0) {
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88 return;
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89 }
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90
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91 /* Read IKBD vectors base */
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92 kbdvecs=Kbdvbase();
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93
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94 /* Go to supervisor mode */
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95 oldpile=(void *)Super(NULL);
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96
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97 /* Reinstall system vector */
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98 SDL_AtariXbios_Restore(kbdvecs);
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99
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100 /* Back to user mode */
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101 Super(oldpile);
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102 }
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103
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104 static int atari_GetButton(int button)
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105 {
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106 switch(button)
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107 {
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108 case 0:
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109 return SDL_BUTTON_RIGHT;
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110 break;
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111 case 1:
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112 default:
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113 return SDL_BUTTON_LEFT;
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114 break;
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115 }
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116 }
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117
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118 void SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents)
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119 {
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120 if (SDL_AtariXbios_enabled==0) {
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121 return;
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122 }
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123
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124 /* Mouse motion ? */
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125 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
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126 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
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127 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
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128 }
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129
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130 /* Mouse button ? */
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131 if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) {
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132 int i;
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133
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134 for (i=0;i<2;i++) {
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135 int curbutton, prevbutton;
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136
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137 curbutton = SDL_AtariXbios_mouseb & (1<<i);
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138 prevbutton = atari_prevmouseb & (1<<i);
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139
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140 if (curbutton && !prevbutton) {
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141 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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142 }
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143 if (!curbutton && prevbutton) {
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144 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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145 }
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146 }
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147 atari_prevmouseb = SDL_AtariXbios_mouseb;
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148 }
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149 }
3857
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150
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151 void SDL_AtariXbios_LockMousePosition(SDL_bool lockPosition)
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152 {
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153 SDL_AtariXbios_mouselock = lockPosition;
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154 }