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annotate src/video/ps3/SDL_ps3video.c @ 3550:6b69c5def097

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Minor documentation fix
author Sam Lantinga <slouken@libsdl.org>
date Sat, 12 Dec 2009 20:30:25 +0000
parents 83518f8fcd61
children f7b03b6838cb
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 /* SDL PS3 video driver implementation based on dummy video driver
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25 *
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26 * Initial work by Ryan C. Gordon (icculus@icculus.org). A good portion
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27 * of this was cut-and-pasted from Stephane Peter's work in the AAlib
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28 * SDL video driver. Renamed to "DUMMY" by Sam Lantinga.
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29 */
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30
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31 #include "SDL_video.h"
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32 #include "SDL_mouse.h"
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33 #include "../SDL_sysvideo.h"
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34 #include "../SDL_pixels_c.h"
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35 #include "../../events/SDL_events_c.h"
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36
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37 #include "SDL_ps3video.h"
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38 #include "SDL_ps3spe_c.h"
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39 #include "SDL_ps3events_c.h"
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40 #include "SDL_ps3render_c.h"
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41 #include "SDL_ps3modes_c.h"
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42
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43 #include <fcntl.h>
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44 #include <linux/fb.h>
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45 #include <asm/ps3fb.h>
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46 #include <sys/mman.h>
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47
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48 #define PS3VID_DRIVER_NAME "ps3"
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49
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50 /* Initialization/Query functions */
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51 static int PS3_VideoInit(_THIS);
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52 static void PS3_VideoQuit(_THIS);
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53
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54 /* Stores the SPE executable name of fb_writer_spu */
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55 extern spe_program_handle_t fb_writer_spu;
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56
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57 /* PS3 driver bootstrap functions */
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58
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59 static int
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60 PS3_Available(void)
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61 {
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62 deprintf(1, "+PS3_Available()\n");
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63 const char *envr = SDL_getenv("SDL_VIDEODRIVER");
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64 if ((envr) && (SDL_strcmp(envr, PS3VID_DRIVER_NAME) == 0)) {
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65 return (1);
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66 }
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67
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68 deprintf(1, "-PS3_Available()\n");
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69 return (0);
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70 }
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71
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72 static void
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73 PS3_DeleteDevice(SDL_VideoDevice * device)
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74 {
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75 deprintf(1, "+PS3_DeleteDevice()\n");
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76 SDL_free(device->driverdata);
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77 SDL_free(device);
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78 deprintf(1, "-PS3_DeleteDevice()\n");
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79 }
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80
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81 static SDL_VideoDevice *
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82 PS3_CreateDevice(int devindex)
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83 {
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84 deprintf(1, "+PS3_CreateDevice()\n");
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85 SDL_VideoDevice *device;
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86 SDL_VideoData *data;
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87
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88 /* Initialize all variables that we clean on shutdown */
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89 device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
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90 if (!device) {
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91 SDL_OutOfMemory();
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92 if (device) {
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93 SDL_free(device);
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94 }
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95 return (0);
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96 }
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97 data = (struct SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
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98 if (!data) {
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99 SDL_OutOfMemory();
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100 SDL_free(device);
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101 return (0);
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102 }
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103 device->driverdata = data;
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104
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105 /* Set the function pointers */
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106 device->VideoInit = PS3_VideoInit;
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107 device->VideoQuit = PS3_VideoQuit;
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108 device->SetDisplayMode = PS3_SetDisplayMode;
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109 device->GetDisplayModes = PS3_GetDisplayModes;
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110 device->PumpEvents = PS3_PumpEvents;
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111
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112 device->free = PS3_DeleteDevice;
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113
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114 deprintf(1, "-PS3_CreateDevice()\n");
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115 return device;
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116 }
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117
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118 VideoBootStrap PS3_bootstrap = {
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119 PS3VID_DRIVER_NAME, "SDL PS3 Cell video driver",
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120 PS3_Available, PS3_CreateDevice
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121 };
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122
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123
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124 int
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125 PS3_VideoInit(_THIS)
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126 {
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127 int i;
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128
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129 deprintf(1, "PS3_VideoInit()\n");
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130
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131 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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132 SDL_DisplayMode mode;
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133
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134 /* Create SPU fb_parms and thread structure */
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135 data->fb_parms = (struct fb_writer_parms_t *)
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136 memalign(16, sizeof(struct fb_writer_parms_t));
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137 data->fb_thread_data = (spu_data_t *) malloc(sizeof(spu_data_t));
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138 if (data->fb_parms == NULL || data->fb_thread_data == NULL) {
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139 SDL_OutOfMemory();
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140 return -1;
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141 }
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142 data->fb_thread_data->program = fb_writer_spu;
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143 data->fb_thread_data->program_name = "fb_writer_spu";
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144 data->fb_thread_data->argp = (void *)data->fb_parms;
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145 data->fb_thread_data->keepalive = 1;
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146 data->fb_thread_data->booted = 0;
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147
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148 SPE_Start(data->fb_thread_data);
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149
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150 /* Open the device */
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151 data->fbdev = open(PS3DEV, O_RDWR);
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152 if (data->fbdev < 0) {
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153 SDL_SetError("[PS3] Unable to open device %s", PS3DEV);
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154 return -1;
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155 }
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156
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157 /* Take control of frame buffer from kernel, for details see
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158 * http://felter.org/wesley/files/ps3/linux-20061110-docs/ApplicationProgrammingEnvironment.html
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159 * kernel will no longer flip the screen itself
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160 */
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161 ioctl(data->fbdev, PS3FB_IOCTL_ON, 0);
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162
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163 /* Unblank screen */
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164 ioctl(data->fbdev, FBIOBLANK, 0);
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165
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166 struct fb_fix_screeninfo fb_finfo;
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167 if (ioctl(data->fbdev, FBIOGET_FSCREENINFO, &fb_finfo)) {
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168 SDL_SetError("[PS3] Can't get fixed screeninfo");
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169 return (0);
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170 }
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171
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172 /* Note: on PS3, fb_finfo.smem_len is enough for double buffering */
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173 if ((data->frame_buffer = (uint8_t *)mmap(0, fb_finfo.smem_len,
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174 PROT_READ | PROT_WRITE, MAP_SHARED,
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175 data->fbdev, 0)) == (uint8_t *) - 1) {
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176 SDL_SetError("[PS3] Can't mmap for %s", PS3DEV);
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177 return (0);
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178 } else {
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179 /* Enable double buffering */
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180 }
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181
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182 /* Blank screen */
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183 memset(data->frame_buffer, 0x00, fb_finfo.smem_len);
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184
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185 PS3_InitModes(_this);
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186 for (i = 0; i < _this->num_displays; ++i) {
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187 SDL_AddRenderDriver(&_this->displays[i], &SDL_PS3_RenderDriver);
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188 }
3257
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189
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190 /* We're done! */
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191 return 0;
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192 }
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193
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194 void
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195 PS3_VideoQuit(_THIS)
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196 {
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197 deprintf(1, "PS3_VideoQuit()\n");
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198 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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199
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200 PS3_QuitModes(_this);
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201
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202 /* Unmap framebuffer */
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203 if (data->frame_buffer) {
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204 struct fb_fix_screeninfo fb_finfo;
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205 if (ioctl(data->fbdev, FBIOGET_FSCREENINFO, &fb_finfo) != -1) {
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206 munmap(data->frame_buffer, fb_finfo.smem_len);
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207 data->frame_buffer = 0;
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208 }
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209 }
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210
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211 /* Shutdown SPE and related resources */
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212 if (data->fb_parms)
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213 free((void *)data->fb_parms);
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214 if (data->fb_thread_data) {
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215 SPE_Shutdown(data->fb_thread_data);
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216 free((void *)data->fb_thread_data);
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217 }
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218
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219 /* Close device */
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220 if (data->fbdev) {
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221 /* Give control of frame buffer back to kernel */
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222 ioctl(data->fbdev, PS3FB_IOCTL_OFF, 0);
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223 close(data->fbdev);
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224 data->fbdev = -1;
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225 }
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226 }
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227
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228 /* vi: set ts=4 sw=4 expandtab: */