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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_service.h" | 5 #include "content/browser/gamepad/gamepad_service.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/memory/singleton.h" | 9 #include "base/memory/singleton.h" |
| 10 #include "content/browser/gamepad/gamepad_consumer.h" |
10 #include "content/browser/gamepad/gamepad_data_fetcher.h" | 11 #include "content/browser/gamepad/gamepad_data_fetcher.h" |
11 #include "content/browser/gamepad/gamepad_provider.h" | 12 #include "content/browser/gamepad/gamepad_provider.h" |
| 13 #include "content/public/browser/browser_thread.h" |
12 #include "content/public/browser/render_process_host.h" | 14 #include "content/public/browser/render_process_host.h" |
13 | 15 |
14 namespace content { | 16 namespace content { |
15 | 17 |
16 GamepadService::GamepadService() : num_readers_(0) { | 18 GamepadService::GamepadService() { |
17 } | 19 } |
18 | 20 |
19 GamepadService::GamepadService(scoped_ptr<GamepadDataFetcher> fetcher) | 21 GamepadService::GamepadService(scoped_ptr<GamepadDataFetcher> fetcher) |
20 : num_readers_(0), | 22 : provider_(new GamepadProvider(fetcher.Pass())) { |
21 provider_(new GamepadProvider(fetcher.Pass())) { | |
22 thread_checker_.DetachFromThread(); | 23 thread_checker_.DetachFromThread(); |
23 } | 24 } |
24 | 25 |
25 GamepadService::~GamepadService() { | 26 GamepadService::~GamepadService() { |
26 } | 27 } |
27 | 28 |
28 GamepadService* GamepadService::GetInstance() { | 29 GamepadService* GamepadService::GetInstance() { |
29 return Singleton<GamepadService, | 30 return Singleton<GamepadService, |
30 LeakySingletonTraits<GamepadService> >::get(); | 31 LeakySingletonTraits<GamepadService> >::get(); |
31 } | 32 } |
32 | 33 |
33 void GamepadService::AddConsumer() { | 34 void GamepadService::AddConsumer(GamepadConsumer* consumer) { |
34 DCHECK(thread_checker_.CalledOnValidThread()); | 35 DCHECK(thread_checker_.CalledOnValidThread()); |
35 | 36 |
36 num_readers_++; | 37 DCHECK(consumers_.count(ConsumerInfo(consumer)) == 0); |
37 DCHECK(num_readers_ > 0); | 38 consumers_.insert(ConsumerInfo(consumer)); |
38 if (!provider_) | 39 if (!provider_) |
39 provider_.reset(new GamepadProvider); | 40 provider_.reset(new GamepadProvider); |
| 41 provider_->RegisterForUserGesture( |
| 42 base::Bind(&GamepadService::OnUserGesture, |
| 43 base::Unretained(this))); |
40 provider_->Resume(); | 44 provider_->Resume(); |
41 } | 45 } |
42 | 46 |
43 void GamepadService::RemoveConsumer() { | 47 void GamepadService::OnUserGesture() { |
44 DCHECK(thread_checker_.CalledOnValidThread()); | 48 DCHECK(thread_checker_.CalledOnValidThread()); |
45 | 49 |
46 --num_readers_; | 50 if (!provider_) |
47 DCHECK(num_readers_ >= 0); | 51 return; |
48 | 52 |
49 if (num_readers_ == 0) | 53 for (ConsumerSet::iterator it = consumers_.begin(); |
| 54 it != consumers_.end(); ++it) { |
| 55 if (!it->did_observe_user_gesture) { |
| 56 ConsumerInfo& info = const_cast<ConsumerInfo&>(*it); |
| 57 info.did_observe_user_gesture = true; |
| 58 blink::WebGamepads gamepads; |
| 59 provider_->GetCurrentGamepadData(&gamepads); |
| 60 for (unsigned i = 0; i < blink::WebGamepads::itemsLengthCap; ++i) { |
| 61 const blink::WebGamepad& pad = gamepads.items[i]; |
| 62 if (pad.connected) |
| 63 info.consumer->OnGamepadConnected(i, pad); |
| 64 } |
| 65 } |
| 66 } |
| 67 } |
| 68 |
| 69 void GamepadService::RemoveConsumer(GamepadConsumer* consumer) { |
| 70 DCHECK(thread_checker_.CalledOnValidThread()); |
| 71 |
| 72 DCHECK(consumers_.count(ConsumerInfo(consumer)) > 0); |
| 73 consumers_.erase(ConsumerInfo(consumer)); |
| 74 if (consumers_.size() == 0) |
50 provider_->Pause(); | 75 provider_->Pause(); |
51 } | 76 } |
52 | 77 |
53 void GamepadService::RegisterForUserGesture(const base::Closure& closure) { | 78 void GamepadService::RegisterForUserGesture(const base::Closure& closure) { |
54 DCHECK(num_readers_ > 0); | 79 DCHECK(consumers_.size() > 0); |
55 DCHECK(thread_checker_.CalledOnValidThread()); | 80 DCHECK(thread_checker_.CalledOnValidThread()); |
56 provider_->RegisterForUserGesture(closure); | 81 provider_->RegisterForUserGesture(closure); |
57 } | 82 } |
58 | 83 |
59 void GamepadService::Terminate() { | 84 void GamepadService::Terminate() { |
60 provider_.reset(); | 85 provider_.reset(); |
61 } | 86 } |
62 | 87 |
| 88 void GamepadService::OnGamepadConnected( |
| 89 int index, |
| 90 const blink::WebGamepad& pad) { |
| 91 DCHECK(thread_checker_.CalledOnValidThread()); |
| 92 |
| 93 for (ConsumerSet::iterator it = consumers_.begin(); |
| 94 it != consumers_.end(); ++it) { |
| 95 if (it->did_observe_user_gesture) |
| 96 it->consumer->OnGamepadConnected(index, pad); |
| 97 } |
| 98 } |
| 99 |
| 100 void GamepadService::OnGamepadDisconnected( |
| 101 int index, |
| 102 const blink::WebGamepad& pad) { |
| 103 DCHECK(thread_checker_.CalledOnValidThread()); |
| 104 |
| 105 for (ConsumerSet::iterator it = consumers_.begin(); |
| 106 it != consumers_.end(); ++it) { |
| 107 if (it->did_observe_user_gesture) |
| 108 it->consumer->OnGamepadDisconnected(index, pad); |
| 109 } |
| 110 } |
| 111 |
63 base::SharedMemoryHandle GamepadService::GetSharedMemoryHandleForProcess( | 112 base::SharedMemoryHandle GamepadService::GetSharedMemoryHandleForProcess( |
64 base::ProcessHandle handle) { | 113 base::ProcessHandle handle) { |
65 DCHECK(thread_checker_.CalledOnValidThread()); | 114 DCHECK(thread_checker_.CalledOnValidThread()); |
66 return provider_->GetSharedMemoryHandleForProcess(handle); | 115 return provider_->GetSharedMemoryHandleForProcess(handle); |
67 } | 116 } |
68 | 117 |
69 } // namespace content | 118 } // namespace content |
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