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| 1 // Copyright (c) 2011 The Native Client Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "experimental/conways_life/life_application.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <cassert> | |
| 9 #include <cmath> | |
| 10 #include <cstdio> | |
| 11 #include <cstring> | |
| 12 #include <sstream> | |
| 13 #include <string> | |
| 14 | |
| 15 #include "experimental/conways_life/audio/web_wav_sound_resource.h" | |
| 16 #include "experimental/conways_life/scoped_pixel_lock.h" | |
| 17 #include "experimental/conways_life/threading/scoped_mutex_lock.h" | |
| 18 #include "ppapi/c/pp_errors.h" | |
| 19 #include "ppapi/cpp/completion_callback.h" | |
| 20 #include "ppapi/cpp/var.h" | |
| 21 | |
| 22 namespace { | |
| 23 const char* const kClearMethodId = "clear"; | |
| 24 const char* const kPutStampAtPointMethodId = "putStampAtPoint"; | |
| 25 const char* const kRunSimulationMethodId = "runSimulation"; | |
| 26 const char* const kSetAutomatonRulesMethodId = "setAutomatonRules"; | |
| 27 const char* const kSetCurrentStampMethodId = "setCurrentStamp"; | |
| 28 const char* const kSetStampSoundUrlMethodId = "setStampSoundUrl"; | |
| 29 const char* const kStopSimulationMethodId = "stopSimulation"; | |
| 30 | |
| 31 const int kSimulationTickInterval = 10; // Measured in msec. | |
| 32 const uint32_t kBackgroundColor = 0xFFFFFFFF; // Opaque white. | |
| 33 | |
| 34 // Simulation modes. These strings are matched by the browser script. | |
| 35 const char* const kRandomSeedModeId = "random_seed"; | |
| 36 const char* const kStampModeId = "stamp"; | |
| 37 | |
| 38 // Return the value of parameter named |param_name| from |parameters|. If | |
| 39 // |param_name| doesn't exist, then return an empty string. | |
| 40 std::string GetParameterNamed( | |
| 41 const std::string& param_name, | |
| 42 const scripting::MethodParameter& parameters) { | |
| 43 scripting::MethodParameter::const_iterator i = | |
| 44 parameters.find(param_name); | |
| 45 if (i == parameters.end()) { | |
| 46 return ""; | |
| 47 } | |
| 48 return i->second; | |
| 49 } | |
| 50 | |
| 51 // Return the int32_t equivalent of |str|. All the usual C++ rounding rules | |
| 52 // apply. | |
| 53 int32_t StringAsInt32(const std::string& str) { | |
| 54 std::istringstream cvt_stream(str); | |
| 55 double double_val; | |
| 56 cvt_stream >> double_val; | |
| 57 return static_cast<int32_t>(double_val); | |
| 58 } | |
| 59 | |
| 60 // Called from the browser when the delay time has elapsed. This routine | |
| 61 // runs a simulation update, then reschedules itself to run the next | |
| 62 // simulation tick. | |
| 63 void SimulationTickCallback(void* data, int32_t result) { | |
| 64 life::LifeApplication* life_app = static_cast<life::LifeApplication*>(data); | |
| 65 life_app->Update(); | |
| 66 if (life_app->is_running()) { | |
| 67 pp::Module::Get()->core()->CallOnMainThread( | |
| 68 kSimulationTickInterval, | |
| 69 pp::CompletionCallback(&SimulationTickCallback, data), | |
| 70 PP_OK); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 // Called from the browser when the 2D graphics have been flushed out to the | |
| 75 // device. | |
| 76 void FlushCallback(void* data, int32_t result) { | |
| 77 static_cast<life::LifeApplication*>(data)->set_flush_pending(false); | |
| 78 } | |
| 79 } // namespace | |
| 80 | |
| 81 using scripting::ScriptingBridge; | |
| 82 | |
| 83 namespace life { | |
| 84 LifeApplication::LifeApplication(PP_Instance instance) | |
| 85 : pp::Instance(instance), | |
| 86 graphics_2d_context_(NULL), | |
| 87 flush_pending_(false), | |
| 88 view_changed_size_(true), | |
| 89 audio_player_(this) { | |
| 90 } | |
| 91 | |
| 92 LifeApplication::~LifeApplication() { | |
| 93 life_simulation_.set_is_simulation_running(false); | |
| 94 DestroyContext(); | |
| 95 } | |
| 96 | |
| 97 bool LifeApplication::Init(uint32_t /* argc */, | |
| 98 const char* /* argn */[], | |
| 99 const char* /* argv */[]) { | |
| 100 // Add all the methods to the scripting bridge. | |
| 101 ScriptingBridge::SharedMethodCallbackExecutor | |
| 102 clear_method(new scripting::MethodCallback<LifeApplication>( | |
| 103 this, &LifeApplication::Clear)); | |
| 104 scripting_bridge_.AddMethodNamed(kClearMethodId, clear_method); | |
| 105 | |
| 106 ScriptingBridge::SharedMethodCallbackExecutor | |
| 107 put_stamp_method(new scripting::MethodCallback<LifeApplication>( | |
| 108 this, &LifeApplication::PutStampAtPoint)); | |
| 109 scripting_bridge_.AddMethodNamed(kPutStampAtPointMethodId, put_stamp_method); | |
| 110 | |
| 111 ScriptingBridge::SharedMethodCallbackExecutor | |
| 112 run_sim_method(new scripting::MethodCallback<LifeApplication>( | |
| 113 this, &LifeApplication::RunSimulation)); | |
| 114 scripting_bridge_.AddMethodNamed(kRunSimulationMethodId, run_sim_method); | |
| 115 | |
| 116 ScriptingBridge::SharedMethodCallbackExecutor | |
| 117 set_auto_rules_method(new scripting::MethodCallback<LifeApplication>( | |
| 118 this, &LifeApplication::SetAutomatonRules)); | |
| 119 scripting_bridge_.AddMethodNamed(kSetAutomatonRulesMethodId, | |
| 120 set_auto_rules_method); | |
| 121 | |
| 122 ScriptingBridge::SharedMethodCallbackExecutor | |
| 123 set_stamp_method(new scripting::MethodCallback<LifeApplication>( | |
| 124 this, &LifeApplication::SetCurrentStamp)); | |
| 125 scripting_bridge_.AddMethodNamed(kSetCurrentStampMethodId, set_stamp_method); | |
| 126 | |
| 127 ScriptingBridge::SharedMethodCallbackExecutor | |
| 128 set_stamp_sound_method(new scripting::MethodCallback<LifeApplication>( | |
| 129 this, &LifeApplication::SetStampSoundUrl)); | |
| 130 scripting_bridge_.AddMethodNamed(kSetStampSoundUrlMethodId, | |
| 131 set_stamp_sound_method); | |
| 132 | |
| 133 ScriptingBridge::SharedMethodCallbackExecutor | |
| 134 stop_sim_method(new scripting::MethodCallback<LifeApplication>( | |
| 135 this, &LifeApplication::StopSimulation)); | |
| 136 scripting_bridge_.AddMethodNamed(kStopSimulationMethodId, stop_sim_method); | |
| 137 | |
| 138 life_simulation_.StartSimulation(); | |
| 139 return true; | |
| 140 } | |
| 141 | |
| 142 void LifeApplication::HandleMessage(const pp::Var& message) { | |
| 143 if (!message.is_string()) | |
| 144 return; | |
| 145 scripting_bridge_.InvokeMethod(message.AsString()); | |
| 146 } | |
| 147 | |
| 148 void LifeApplication::DidChangeView(const pp::Rect& position, | |
| 149 const pp::Rect& /* clip */) { | |
| 150 if (position.size().width() == width() && | |
| 151 position.size().height() == height()) | |
| 152 return; // Size didn't change, no need to update anything. | |
| 153 // Indicate that all the buffers need to be resized at the next Update() | |
| 154 // call. | |
| 155 view_changed_size_ = true; | |
| 156 view_size_ = position.size(); | |
| 157 // Make sure the buffers get changed if the simulation isn't running. | |
| 158 if (!is_running()) | |
| 159 Update(); | |
| 160 } | |
| 161 | |
| 162 void LifeApplication::Update() { | |
| 163 if (flush_pending()) | |
| 164 return; // Don't attempt to flush if one is pending. | |
| 165 | |
| 166 if (view_changed_size_) { | |
| 167 // Delete the old pixel buffer and create a new one. | |
| 168 // Pause the simulation before changing all the buffer sizes. | |
| 169 Life::SimulationMode sim_mode = life_simulation_.simulation_mode(); | |
| 170 life_simulation_.set_simulation_mode(Life::kPaused); | |
| 171 // Create a new device context with the new size. | |
| 172 // Note: DestroyContext() releases the simulation's copy of the shared | |
| 173 // pixel buffer. *This has to happen before the reset() below!* If the | |
| 174 // simulation's copy of hte shared pointer is released last, then the | |
| 175 // underlying ImageData is released off the main thread, which is not | |
| 176 // supported in Pepper. | |
| 177 DestroyContext(); | |
| 178 CreateContext(view_size_); | |
| 179 threading::ScopedMutexLock scoped_mutex( | |
| 180 life_simulation_.simulation_mutex()); | |
| 181 if (!scoped_mutex.is_valid()) | |
| 182 // This potentially leaves the simulation in a paused state, but getting | |
| 183 // here means something is very wrong and the simulation probably can't | |
| 184 // run anyways. | |
| 185 return; | |
| 186 life_simulation_.DeleteCells(); | |
| 187 if (graphics_2d_context_ != NULL) { | |
| 188 shared_pixel_buffer_.reset( | |
| 189 new LockingImageData(this, | |
| 190 PP_IMAGEDATAFORMAT_BGRA_PREMUL, | |
| 191 graphics_2d_context_->size(), | |
| 192 false)); | |
| 193 set_flush_pending(false); | |
| 194 // Ok to get a non-locked version because the simulation is guraranteed | |
| 195 // to be paused here. | |
| 196 uint32_t* pixels = shared_pixel_buffer_->PixelBufferNoLock(); | |
| 197 if (pixels) { | |
| 198 const size_t size = width() * height(); | |
| 199 std::fill(pixels, pixels + size, kBackgroundColor); | |
| 200 } | |
| 201 life_simulation_.Resize(width(), height()); | |
| 202 life_simulation_.set_pixel_buffer(shared_pixel_buffer_); | |
| 203 life_simulation_.set_simulation_mode(sim_mode); | |
| 204 } | |
| 205 view_changed_size_ = false; | |
| 206 } | |
| 207 FlushPixelBuffer(); | |
| 208 } | |
| 209 | |
| 210 void LifeApplication::SetCurrentStamp( | |
| 211 const scripting::ScriptingBridge& bridge, | |
| 212 const scripting::MethodParameter& parameters) { | |
| 213 std::string stamp_desc = GetParameterNamed("description", parameters); | |
| 214 if (stamp_desc.length()) { | |
| 215 stamp_.InitFromDescription(stamp_desc); | |
| 216 } | |
| 217 } | |
| 218 | |
| 219 void LifeApplication::Clear( | |
| 220 const scripting::ScriptingBridge& bridge, | |
| 221 const scripting::MethodParameter& parameters) { | |
| 222 // Temporarily pause the the simulation while clearing the buffers. | |
| 223 volatile Life::SimulationMode sim_mode = life_simulation_.simulation_mode(); | |
| 224 if (sim_mode != Life::kPaused) | |
| 225 life_simulation_.set_simulation_mode(Life::kPaused); | |
| 226 life_simulation_.ClearCells(); | |
| 227 ScopedPixelLock scoped_pixel_lock(shared_pixel_buffer_); | |
| 228 uint32_t* pixel_buffer = scoped_pixel_lock.pixels(); | |
| 229 if (pixel_buffer) { | |
| 230 const size_t size = width() * height(); | |
| 231 std::fill(pixel_buffer, | |
| 232 pixel_buffer + size, | |
| 233 kBackgroundColor); | |
| 234 } | |
| 235 Update(); // Flushes the buffer correctly. | |
| 236 if (sim_mode != Life::kPaused) | |
| 237 life_simulation_.set_simulation_mode(sim_mode); | |
| 238 } | |
| 239 | |
| 240 void LifeApplication::SetAutomatonRules( | |
| 241 const scripting::ScriptingBridge& bridge, | |
| 242 const scripting::MethodParameter& parameters) { | |
| 243 std::string rules = GetParameterNamed("rules", parameters); | |
| 244 if (rules.length()) { | |
| 245 life_simulation_.SetAutomatonRules(rules); | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 void LifeApplication::RunSimulation( | |
| 250 const scripting::ScriptingBridge& bridge, | |
| 251 const scripting::MethodParameter& parameters) { | |
| 252 std::string sim_mode = GetParameterNamed("mode", parameters); | |
| 253 if (sim_mode.length() == 0) { | |
| 254 return; | |
| 255 } | |
| 256 if (sim_mode == kRandomSeedModeId) { | |
| 257 life_simulation_.set_simulation_mode(life::Life::kRunRandomSeed); | |
| 258 } else { | |
| 259 life_simulation_.set_simulation_mode(life::Life::kRunStamp); | |
| 260 } | |
| 261 // Schedule a simulation tick to get things going. | |
| 262 pp::Module::Get()->core()->CallOnMainThread( | |
| 263 kSimulationTickInterval, | |
| 264 pp::CompletionCallback(&SimulationTickCallback, this), | |
| 265 PP_OK); | |
| 266 } | |
| 267 | |
| 268 void LifeApplication::StopSimulation( | |
| 269 const scripting::ScriptingBridge& bridge, | |
| 270 const scripting::MethodParameter& parameters) { | |
| 271 // This will pause the simulation on the next tick. | |
| 272 life_simulation_.set_simulation_mode(life::Life::kPaused); | |
| 273 } | |
| 274 | |
| 275 void LifeApplication::PutStampAtPoint( | |
| 276 const scripting::ScriptingBridge& bridge, | |
| 277 const scripting::MethodParameter& parameters) { | |
| 278 std::string x_coord = GetParameterNamed("x", parameters); | |
| 279 std::string y_coord = GetParameterNamed("y", parameters); | |
| 280 if (x_coord.length() == 0 || y_coord.length() == 0) { | |
| 281 return; | |
| 282 } | |
| 283 int32_t x = StringAsInt32(x_coord); | |
| 284 int32_t y = StringAsInt32(y_coord); | |
| 285 life_simulation_.PutStampAtPoint(stamp_, pp::Point(x, y)); | |
| 286 // Play the stamp sound. | |
| 287 if (audio_player_.IsReady()) | |
| 288 audio_player_.Play(); | |
| 289 // If the simulation isn't running, make sure the stamp shows up. | |
| 290 if (!is_running()) | |
| 291 Update(); | |
| 292 } | |
| 293 | |
| 294 void LifeApplication::SetStampSoundUrl( | |
| 295 const scripting::ScriptingBridge& bridge, | |
| 296 const scripting::MethodParameter& parameters) { | |
| 297 std::string sound_url = GetParameterNamed("soundUrl", parameters); | |
| 298 if (sound_url.length() == 0) { | |
| 299 return; | |
| 300 } | |
| 301 audio::WebWavSoundResource* sound = new audio::WebWavSoundResource(); | |
| 302 sound->Init(sound_url, this); | |
| 303 // |audio_player_| takes ownership of |sound| and is responsible for | |
| 304 // deleting it. | |
| 305 audio_player_.AssignAudioSource(sound); | |
| 306 } | |
| 307 | |
| 308 void LifeApplication::CreateContext(const pp::Size& size) { | |
| 309 if (IsContextValid()) | |
| 310 return; | |
| 311 graphics_2d_context_ = new pp::Graphics2D(this, size, false); | |
| 312 if (!BindGraphics(*graphics_2d_context_)) { | |
| 313 printf("Couldn't bind the device context\n"); | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 void LifeApplication::DestroyContext() { | |
| 318 threading::ScopedMutexLock scoped_mutex(life_simulation_.simulation_mutex()); | |
| 319 if (!scoped_mutex.is_valid()) { | |
| 320 return; | |
| 321 } | |
| 322 ScopedPixelLock scoped_pixel_lock(shared_pixel_buffer_); | |
| 323 shared_pixel_buffer_.reset(); | |
| 324 life_simulation_.set_pixel_buffer(shared_pixel_buffer_); | |
| 325 if (!IsContextValid()) | |
| 326 return; | |
| 327 delete graphics_2d_context_; | |
| 328 graphics_2d_context_ = NULL; | |
| 329 } | |
| 330 | |
| 331 void LifeApplication::FlushPixelBuffer() { | |
| 332 if (!IsContextValid() || shared_pixel_buffer_ == NULL) | |
| 333 return; | |
| 334 set_flush_pending(true); | |
| 335 graphics_2d_context_->PaintImageData(*shared_pixel_buffer_, pp::Point()); | |
| 336 graphics_2d_context_->Flush(pp::CompletionCallback(&FlushCallback, this)); | |
| 337 } | |
| 338 } // namespace life | |
| 339 | |
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Chromium Code Reviews
Issue 10928195:
First round of dead file removal (Closed)
Base URL: https://github.com/samclegg/nativeclient-sdk.git@master