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annotate src/video/ps3/SDL_ps3spe.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 94fb40a4a9a7
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 #include "SDL_video.h"
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25 #include "SDL_ps3spe_c.h"
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26
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27 #include "SDL_ps3video.h"
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28 #include "SDL_ps3render_c.h"
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29
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30 /* Start the SPE thread */
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31 int SPE_Start(spu_data_t * spe_data)
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32 {
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33 deprintf(2, "[PS3->SPU] Start SPE: %s\n", spe_data->program_name);
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34 if (!(spe_data->booted))
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35 SPE_Boot(spe_data);
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36
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37 /* To allow re-running of context, spe_ctx_entry has to be set before each call */
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38 spe_data->entry = SPE_DEFAULT_ENTRY;
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39 spe_data->error_code = 0;
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40
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41 /* Create SPE thread and run */
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42 deprintf(2, "[PS3->SPU] Create Thread: %s\n", spe_data->program_name);
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43 if (pthread_create
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44 (&spe_data->thread, NULL, (void *)&SPE_RunContext, (void *)spe_data)) {
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45 deprintf(2, "[PS3->SPU] Could not create pthread for spe: %s\n", spe_data->program_name);
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46 SDL_SetError("[PS3->SPU] Could not create pthread for spe");
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47 return -1;
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48 }
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49
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50 if (spe_data->keepalive)
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51 SPE_WaitForMsg(spe_data, SPU_READY);
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52 }
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53
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54 /* Stop the SPE thread */
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55 int SPE_Stop(spu_data_t * spe_data)
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56 {
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57 deprintf(2, "[PS3->SPU] Stop SPE: %s\n", spe_data->program_name);
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58 /* Wait for SPE thread to complete */
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59 deprintf(2, "[PS3->SPU] Wait for SPE thread to complete: %s\n", spe_data->program_name);
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60 if (pthread_join(spe_data->thread, NULL)) {
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61 deprintf(2, "[PS3->SPU] Failed joining the thread: %s\n", spe_data->program_name);
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62 SDL_SetError("[PS3->SPU] Failed joining the thread");
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63 return -1;
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64 }
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65
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66 return 0;
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67 }
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68
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69 /* Create SPE context and load program */
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70 int SPE_Boot(spu_data_t * spe_data)
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71 {
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72 /* Create SPE context */
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73 deprintf(2, "[PS3->SPU] Create SPE Context: %s\n", spe_data->program_name);
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74 spe_data->ctx = spe_context_create(0, NULL);
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75 if (spe_data->ctx == NULL) {
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76 deprintf(2, "[PS3->SPU] Failed creating SPE context: %s\n", spe_data->program_name);
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77 SDL_SetError("[PS3->SPU] Failed creating SPE context");
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78 return -1;
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79 }
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80
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81 /* Load SPE object into SPE local store */
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82 deprintf(2, "[PS3->SPU] Load Program into SPE: %s\n", spe_data->program_name);
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83 if (spe_program_load(spe_data->ctx, &spe_data->program)) {
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84 deprintf(2, "[PS3->SPU] Failed loading program into SPE context: %s\n", spe_data->program_name);
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85 SDL_SetError
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86 ("[PS3->SPU] Failed loading program into SPE context");
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87 return -1;
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88 }
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89 spe_data->booted = 1;
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90 deprintf(2, "[PS3->SPU] SPE boot successful\n");
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91
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92 return 0;
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93 }
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94
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95 /* (Stop and) shutdown the SPE */
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96 int SPE_Shutdown(spu_data_t * spe_data)
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97 {
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98 if (spe_data->keepalive && spe_data->booted) {
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99 SPE_SendMsg(spe_data, SPU_EXIT);
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100 SPE_Stop(spe_data);
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101 }
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102
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103 /* Destroy SPE context */
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104 deprintf(2, "[PS3->SPU] Destroy SPE context: %s\n", spe_data->program_name);
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105 if (spe_context_destroy(spe_data->ctx)) {
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106 deprintf(2, "[PS3->SPU] Failed destroying context: %s\n", spe_data->program_name);
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107 SDL_SetError("[PS3->SPU] Failed destroying context");
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108 return -1;
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109 }
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110 deprintf(2, "[PS3->SPU] SPE shutdown successful: %s\n", spe_data->program_name);
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111 return 0;
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112 }
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113
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114 /* Send message to the SPE via mailboxe */
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115 int SPE_SendMsg(spu_data_t * spe_data, unsigned int msg)
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116 {
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117 deprintf(2, "[PS3->SPU] Sending message %u to %s\n", msg, spe_data->program_name);
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118 /* Send one message, block until message was sent */
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119 unsigned int spe_in_mbox_msgs[1];
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120 spe_in_mbox_msgs[0] = msg;
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121 int in_mbox_write = spe_in_mbox_write(spe_data->ctx, spe_in_mbox_msgs, 1, SPE_MBOX_ALL_BLOCKING);
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122
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123 if (1 > in_mbox_write) {
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124 deprintf(2, "[PS3->SPU] No message could be written to %s\n", spe_data->program_name);
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125 SDL_SetError("[PS3->SPU] No message could be written");
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126 return -1;
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127 }
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128 return 0;
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129 }
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130
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131
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132 /* Read 1 message from SPE, block until at least 1 message was received */
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133 int SPE_WaitForMsg(spu_data_t * spe_data, unsigned int msg)
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134 {
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135 deprintf(2, "[PS3->SPU] Waiting for message from %s\n", spe_data->program_name);
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136 unsigned int out_messages[1];
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137 while (!spe_out_mbox_status(spe_data->ctx));
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138 int mbox_read = spe_out_mbox_read(spe_data->ctx, out_messages, 1);
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139 deprintf(2, "[PS3->SPU] Got message from %s, message was %u\n", spe_data->program_name, out_messages[0]);
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140 if (out_messages[0] == msg)
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141 return 0;
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142 else
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143 return -1;
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144 }
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145
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146 /* Re-runnable invocation of the spe_context_run call */
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147 void SPE_RunContext(void *thread_argp)
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148 {
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149 /* argp is the pointer to argument to be passed to the SPE program */
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150 spu_data_t *args = (spu_data_t *) thread_argp;
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151 deprintf(3, "[PS3->SPU] void* argp=0x%x\n", (unsigned int)args->argp);
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152
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153 /* Run it.. */
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154 deprintf(2, "[PS3->SPU] Run SPE program: %s\n", args->program_name);
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155 if (spe_context_run
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156 (args->ctx, &args->entry, 0, (void *)args->argp, NULL,
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157 NULL) < 0) {
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158 deprintf(2, "[PS3->SPU] Failed running SPE context: %s\n", args->program_name);
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159 SDL_SetError("[PS3->SPU] Failed running SPE context: %s", args->program_name);
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160 exit(1);
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161 }
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162
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163 pthread_exit(NULL);
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164 }
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165
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166 /* vi: set ts=4 sw=4 expandtab: */