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| 1 // Copyright (c) 2011 The Chromium 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 "content/renderer/media/video_capture_impl_manager.h" | |
| 6 | |
| 7 #include "base/memory/singleton.h" | |
| 8 #include "content/common/child_process.h" | |
| 9 #include "content/common/child_thread.h" | |
| 10 #include "content/common/video_capture_messages.h" | |
| 11 #include "content/common/view_messages.h" | |
| 12 #include "media/base/message_loop_factory_impl.h" | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 // VideoCaptureMessageFilterCreator is to be used as a singleton so we can get | |
| 17 // access to a shared VideoCaptureMessageFilter. | |
| 18 // Example usage: | |
| 19 // VideoCaptureMessageFilter* filter = | |
| 20 // VideoCaptureMessageFilterCreator::SharedFilter(); | |
| 21 | |
| 22 class VideoCaptureMessageFilterCreator { | |
| 23 public: | |
| 24 VideoCaptureMessageFilterCreator() { | |
| 25 int routing_id; | |
| 26 ChildThread::current()->Send( | |
| 27 new ViewHostMsg_GenerateRoutingID(&routing_id)); | |
| 28 filter_ = new VideoCaptureMessageFilter(routing_id); | |
| 29 filter_->AddFilter(); | |
| 30 } | |
| 31 | |
| 32 static VideoCaptureMessageFilter* SharedFilter() { | |
| 33 return GetInstance()->filter_.get(); | |
| 34 } | |
| 35 | |
| 36 static VideoCaptureMessageFilterCreator* GetInstance() { | |
| 37 return Singleton<VideoCaptureMessageFilterCreator>::get(); | |
| 38 } | |
| 39 | |
| 40 private: | |
| 41 scoped_refptr<VideoCaptureMessageFilter> filter_; | |
| 42 }; | |
| 43 | |
| 44 } // namespace | |
| 45 | |
| 46 VideoCaptureImplManager::VideoCaptureImplManager() { | |
| 47 ml_factory_.reset(new media::MessageLoopFactoryImpl()); | |
| 48 ml_proxy_ = ml_factory_->GetMessageLoopProxy("VC manager"); | |
| 49 } | |
| 50 | |
| 51 VideoCaptureImplManager::~VideoCaptureImplManager() {} | |
| 52 | |
| 53 // static | |
| 54 media::VideoCapture* VideoCaptureImplManager::AddDevice( | |
| 55 media::VideoCaptureSessionId id, | |
| 56 media::VideoCapture::EventHandler* handler) { | |
| 57 DCHECK(handler); | |
| 58 VideoCaptureImplManager* manager = GetInstance(); | |
| 59 | |
| 60 base::AutoLock auto_lock(manager->lock_); | |
| 61 Devices::iterator it = manager->devices_.find(id); | |
| 62 if (it == manager->devices_.end()) { | |
| 63 VideoCaptureImpl* vc = | |
| 64 new VideoCaptureImpl(id, manager->ml_proxy_, | |
| 65 VideoCaptureMessageFilterCreator::SharedFilter()); | |
| 66 manager->devices_[id] = Device(vc, handler); | |
| 67 vc->Init(); | |
| 68 return vc; | |
| 69 } | |
| 70 | |
| 71 manager->devices_[id].clients.push_front(handler); | |
| 72 return it->second.vc; | |
| 73 } | |
| 74 | |
| 75 // static | |
| 76 void VideoCaptureImplManager::RemoveDevice( | |
| 77 media::VideoCaptureSessionId id, | |
| 78 media::VideoCapture::EventHandler* handler) { | |
| 79 DCHECK(handler); | |
| 80 VideoCaptureImplManager* manager = GetInstance(); | |
| 81 | |
| 82 base::AutoLock auto_lock(manager->lock_); | |
| 83 Devices::iterator it = manager->devices_.find(id); | |
| 84 if (it == manager->devices_.end()) | |
| 85 return; | |
| 86 | |
| 87 size_t size = it->second.clients.size(); | |
| 88 it->second.clients.remove(handler); | |
| 89 | |
| 90 if (size == it->second.clients.size() || size > 1) | |
| 91 return; | |
| 92 | |
| 93 manager->devices_[id].vc->DeInit(NewRunnableMethod(manager, | |
| 94 &VideoCaptureImplManager::FreeDevice, manager->devices_[id].vc)); | |
| 95 manager->devices_.erase(id); | |
| 96 return; | |
| 97 } | |
| 98 | |
| 99 // static | |
| 100 VideoCaptureImplManager* VideoCaptureImplManager::GetInstance() { | |
| 101 return Singleton<VideoCaptureImplManager>::get(); | |
| 102 } | |
| 103 | |
| 104 void VideoCaptureImplManager::FreeDevice(VideoCaptureImpl* vc) { | |
| 105 delete vc; | |
| 106 } | |
| 107 | |
| 108 VideoCaptureImplManager::Device::Device() : vc(NULL) {} | |
| 109 | |
| 110 VideoCaptureImplManager::Device::Device( | |
| 111 VideoCaptureImpl* device, | |
| 112 media::VideoCapture::EventHandler* handler) | |
| 113 : vc(device) { | |
| 114 clients.push_front(handler); | |
| 115 } | |
| 116 | |
| 117 VideoCaptureImplManager::Device::~Device() {} | |
| 118 | |
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Chromium Code Reviews
Issue 7071002:
Revert "Add VideoCaptureImpl and VideoCaptureImplManager" (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src