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annotate src/video/ps3/SDL_ps3video.c @ 3473:7bdc10624cba

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This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 07:14:21 +0000
parents 94fb40a4a9a7
children 83518f8fcd61
rev   line source
3257
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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 deprintf(1, "PS3_VideoInit()\n");
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128
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129 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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130 SDL_DisplayMode mode;
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131
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132 /* Create SPU fb_parms and thread structure */
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133 data->fb_parms = (struct fb_writer_parms_t *)
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134 memalign(16, sizeof(struct fb_writer_parms_t));
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135 data->fb_thread_data = (spu_data_t *) malloc(sizeof(spu_data_t));
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136 if (data->fb_parms == NULL || data->fb_thread_data == NULL) {
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137 SDL_OutOfMemory();
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138 return -1;
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139 }
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140 data->fb_thread_data->program = fb_writer_spu;
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141 data->fb_thread_data->program_name = "fb_writer_spu";
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142 data->fb_thread_data->argp = (void *)data->fb_parms;
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143 data->fb_thread_data->keepalive = 1;
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144 data->fb_thread_data->booted = 0;
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145
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146 SPE_Start(data->fb_thread_data);
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147
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148 /* Open the device */
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149 data->fbdev = open(PS3DEV, O_RDWR);
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150 if (data->fbdev < 0) {
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151 SDL_SetError("[PS3] Unable to open device %s", PS3DEV);
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152 return -1;
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153 }
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154
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155 /* Take control of frame buffer from kernel, for details see
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156 * http://felter.org/wesley/files/ps3/linux-20061110-docs/ApplicationProgrammingEnvironment.html
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157 * kernel will no longer flip the screen itself
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158 */
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159 ioctl(data->fbdev, PS3FB_IOCTL_ON, 0);
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160
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161 /* Unblank screen */
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162 ioctl(data->fbdev, FBIOBLANK, 0);
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163
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164 struct fb_fix_screeninfo fb_finfo;
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165 if (ioctl(data->fbdev, FBIOGET_FSCREENINFO, &fb_finfo)) {
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166 SDL_SetError("[PS3] Can't get fixed screeninfo");
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167 return (0);
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168 }
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169
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170 /* Note: on PS3, fb_finfo.smem_len is enough for double buffering */
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171 if ((data->frame_buffer = (uint8_t *)mmap(0, fb_finfo.smem_len,
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172 PROT_READ | PROT_WRITE, MAP_SHARED,
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173 data->fbdev, 0)) == (uint8_t *) - 1) {
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174 SDL_SetError("[PS3] Can't mmap for %s", PS3DEV);
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175 return (0);
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176 } else {
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177 /* Enable double buffering */
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178 }
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179
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180 /* Blank screen */
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181 memset(data->frame_buffer, 0x00, fb_finfo.smem_len);
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182
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183 PS3_InitModes(_this);
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184 SDL_AddRenderDriver(0, &SDL_PS3_RenderDriver);
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185
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186 /* We're done! */
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187 return 0;
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188 }
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189
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190 void
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191 PS3_VideoQuit(_THIS)
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192 {
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193 deprintf(1, "PS3_VideoQuit()\n");
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194 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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195
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196 PS3_QuitModes(_this);
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197
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198 /* Unmap framebuffer */
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199 if (data->frame_buffer) {
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200 struct fb_fix_screeninfo fb_finfo;
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201 if (ioctl(data->fbdev, FBIOGET_FSCREENINFO, &fb_finfo) != -1) {
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202 munmap(data->frame_buffer, fb_finfo.smem_len);
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203 data->frame_buffer = 0;
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204 }
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205 }
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206
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207 /* Shutdown SPE and related resources */
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208 if (data->fb_parms)
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209 free((void *)data->fb_parms);
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210 if (data->fb_thread_data) {
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211 SPE_Shutdown(data->fb_thread_data);
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212 free((void *)data->fb_thread_data);
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213 }
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214
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215 /* Close device */
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216 if (data->fbdev) {
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217 /* Give control of frame buffer back to kernel */
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218 ioctl(data->fbdev, PS3FB_IOCTL_OFF, 0);
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219 close(data->fbdev);
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220 data->fbdev = -1;
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221 }
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222 }
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223
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224 /* vi: set ts=4 sw=4 expandtab: */