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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/browser/gamepad/gamepad_provider.h" | 5 #include "content/browser/gamepad/gamepad_provider.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 #include <string.h> | 8 #include <string.h> |
9 #include <cmath> | 9 #include <cmath> |
10 #include <set> | 10 #include <set> |
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152 #endif | 152 #endif |
153 polling_thread_->StartWithOptions(base::Thread::Options(kMessageLoopType, 0)); | 153 polling_thread_->StartWithOptions(base::Thread::Options(kMessageLoopType, 0)); |
154 | 154 |
155 polling_thread_->task_runner()->PostTask( | 155 polling_thread_->task_runner()->PostTask( |
156 FROM_HERE, base::Bind(&GamepadProvider::DoInitializePollingThread, | 156 FROM_HERE, base::Bind(&GamepadProvider::DoInitializePollingThread, |
157 base::Unretained(this), base::Passed(&fetcher))); | 157 base::Unretained(this), base::Passed(&fetcher))); |
158 } | 158 } |
159 | 159 |
160 void GamepadProvider::DoInitializePollingThread( | 160 void GamepadProvider::DoInitializePollingThread( |
161 std::unique_ptr<GamepadDataFetcher> fetcher) { | 161 std::unique_ptr<GamepadDataFetcher> fetcher) { |
162 DCHECK(base::MessageLoop::current() == polling_thread_->message_loop()); | 162 DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread()); |
163 DCHECK(!data_fetcher_.get()); // Should only initialize once. | 163 DCHECK(!data_fetcher_.get()); // Should only initialize once. |
164 | 164 |
165 if (!fetcher) | 165 if (!fetcher) |
166 fetcher.reset(new GamepadPlatformDataFetcher); | 166 fetcher.reset(new GamepadPlatformDataFetcher); |
167 data_fetcher_ = std::move(fetcher); | 167 data_fetcher_ = std::move(fetcher); |
168 } | 168 } |
169 | 169 |
170 void GamepadProvider::SendPauseHint(bool paused) { | 170 void GamepadProvider::SendPauseHint(bool paused) { |
171 DCHECK(base::MessageLoop::current() == polling_thread_->message_loop()); | 171 DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread()); |
172 if (data_fetcher_) | 172 if (data_fetcher_) |
173 data_fetcher_->PauseHint(paused); | 173 data_fetcher_->PauseHint(paused); |
174 } | 174 } |
175 | 175 |
176 bool GamepadProvider::PadState::Match(const WebGamepad& pad) const { | 176 bool GamepadProvider::PadState::Match(const WebGamepad& pad) const { |
177 return connected_ == pad.connected && | 177 return connected_ == pad.connected && |
178 axes_length_ == pad.axesLength && | 178 axes_length_ == pad.axesLength && |
179 buttons_length_ == pad.buttonsLength && | 179 buttons_length_ == pad.buttonsLength && |
180 memcmp(id_, pad.id, sizeof(id_)) == 0 && | 180 memcmp(id_, pad.id, sizeof(id_)) == 0 && |
181 memcmp(mapping_, pad.mapping, sizeof(mapping_)) == 0; | 181 memcmp(mapping_, pad.mapping, sizeof(mapping_)) == 0; |
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201 pad->connected = connected_; | 201 pad->connected = connected_; |
202 pad->axesLength = axes_length_; | 202 pad->axesLength = axes_length_; |
203 pad->buttonsLength = buttons_length_; | 203 pad->buttonsLength = buttons_length_; |
204 memcpy(pad->id, id_, sizeof(id_)); | 204 memcpy(pad->id, id_, sizeof(id_)); |
205 memcpy(pad->mapping, mapping_, sizeof(mapping_)); | 205 memcpy(pad->mapping, mapping_, sizeof(mapping_)); |
206 memset(pad->axes, 0, sizeof(pad->axes)); | 206 memset(pad->axes, 0, sizeof(pad->axes)); |
207 memset(pad->buttons, 0, sizeof(pad->buttons)); | 207 memset(pad->buttons, 0, sizeof(pad->buttons)); |
208 } | 208 } |
209 | 209 |
210 void GamepadProvider::DoPoll() { | 210 void GamepadProvider::DoPoll() { |
211 DCHECK(base::MessageLoop::current() == polling_thread_->message_loop()); | 211 DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread()); |
212 DCHECK(have_scheduled_do_poll_); | 212 DCHECK(have_scheduled_do_poll_); |
213 have_scheduled_do_poll_ = false; | 213 have_scheduled_do_poll_ = false; |
214 | 214 |
215 bool changed; | 215 bool changed; |
216 GamepadHardwareBuffer* hwbuf = SharedMemoryAsHardwareBuffer(); | 216 GamepadHardwareBuffer* hwbuf = SharedMemoryAsHardwareBuffer(); |
217 | 217 |
218 ANNOTATE_BENIGN_RACE_SIZED( | 218 ANNOTATE_BENIGN_RACE_SIZED( |
219 &hwbuf->buffer, | 219 &hwbuf->buffer, |
220 sizeof(WebGamepads), | 220 sizeof(WebGamepads), |
221 "Racey reads are discarded"); | 221 "Racey reads are discarded"); |
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253 } | 253 } |
254 } | 254 } |
255 | 255 |
256 CheckForUserGesture(); | 256 CheckForUserGesture(); |
257 | 257 |
258 // Schedule our next interval of polling. | 258 // Schedule our next interval of polling. |
259 ScheduleDoPoll(); | 259 ScheduleDoPoll(); |
260 } | 260 } |
261 | 261 |
262 void GamepadProvider::ScheduleDoPoll() { | 262 void GamepadProvider::ScheduleDoPoll() { |
263 DCHECK(base::MessageLoop::current() == polling_thread_->message_loop()); | 263 DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread()); |
264 if (have_scheduled_do_poll_) | 264 if (have_scheduled_do_poll_) |
265 return; | 265 return; |
266 | 266 |
267 { | 267 { |
268 base::AutoLock lock(is_paused_lock_); | 268 base::AutoLock lock(is_paused_lock_); |
269 if (is_paused_) | 269 if (is_paused_) |
270 return; | 270 return; |
271 } | 271 } |
272 | 272 |
273 base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( | 273 base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
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325 } | 325 } |
326 if (!had_gesture_before && ever_had_user_gesture_) { | 326 if (!had_gesture_before && ever_had_user_gesture_) { |
327 // Initialize pad_states_ for the first time. | 327 // Initialize pad_states_ for the first time. |
328 for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { | 328 for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { |
329 pad_states_.get()[i].SetPad(pads.items[i]); | 329 pad_states_.get()[i].SetPad(pads.items[i]); |
330 } | 330 } |
331 } | 331 } |
332 } | 332 } |
333 | 333 |
334 } // namespace content | 334 } // namespace content |
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