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annotate src/video/ps3/SDL_ps3video.c @ 4525:3abf0b9cafad

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pelya 2010-07-12 03:53:48 PDT In function GLES_RenderCopy() in SDL_renderer_gles.c:819 there is one memcpy() that can be avoided if we're updating whole texture. Because of that the SDL 1.3 in compatibility mode is working even slower than software rendering in SDL 1.2.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 14 Jul 2010 07:31:35 -0700
parents f7b03b6838cb
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) 1997-2010 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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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: */