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143 lines
4.0 KiB
C++
143 lines
4.0 KiB
C++
/************************************************************************************
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Filename : CAPI_GlobalState.cpp
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Content : Maintains global state of the CAPI
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Created : January 24, 2014
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Authors : Michael Antonov
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Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved.
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Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License");
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you may not use the Oculus VR Rift SDK except in compliance with the License,
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which is provided at the time of installation or download, or which
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otherwise accompanies this software in either electronic or hard copy form.
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You may obtain a copy of the License at
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http://www.oculusvr.com/licenses/LICENSE-3.1
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Unless required by applicable law or agreed to in writing, the Oculus VR SDK
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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************************************************************************************/
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#include "CAPI_GlobalState.h"
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namespace OVR { namespace CAPI {
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//-------------------------------------------------------------------------------------
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// Open Questions / Notes
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// 2. Detect HMDs.
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// Challenge: If we do everything through polling, it would imply we want all the devices
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// initialized. However, there may be multiple rifts, extra sensors, etc,
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// which shouldn't be allocated.
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//
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// How do you reset orientation Quaternion?
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// Can you change IPD?
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//-------------------------------------------------------------------------------------
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// ***** OVRGlobalState
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// Global instance
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GlobalState* GlobalState::pInstance = 0;
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GlobalState::GlobalState()
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{
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pManager = *DeviceManager::Create();
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// Handle the DeviceManager's messages
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pManager->AddMessageHandler( this );
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EnumerateDevices();
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// PhoneSensors::Init();
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}
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GlobalState::~GlobalState()
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{
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RemoveHandlerFromDevices();
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OVR_ASSERT(HMDs.IsEmpty());
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}
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int GlobalState::EnumerateDevices()
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{
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// Need to use separate lock for device enumeration, as pManager->GetHandlerLock()
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// would produce deadlocks here.
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Lock::Locker lock(&EnumerationLock);
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EnumeratedDevices.Clear();
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DeviceEnumerator<HMDDevice> e = pManager->EnumerateDevices<HMDDevice>();
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while(e.IsAvailable())
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{
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EnumeratedDevices.PushBack(DeviceHandle(e));
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e.Next();
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}
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return (int)EnumeratedDevices.GetSize();
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}
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HMDDevice* GlobalState::CreateDevice(int index)
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{
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Lock::Locker lock(&EnumerationLock);
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if (index >= (int)EnumeratedDevices.GetSize())
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return 0;
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return EnumeratedDevices[index].CreateDeviceTyped<HMDDevice>();
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}
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void GlobalState::AddHMD(HMDState* hmd)
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{
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Lock::Locker lock(pManager->GetHandlerLock());
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HMDs.PushBack(hmd);
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}
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void GlobalState::RemoveHMD(HMDState* hmd)
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{
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Lock::Locker lock(pManager->GetHandlerLock());
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hmd->RemoveNode();
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}
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void GlobalState::NotifyHMDs_AddDevice(DeviceType deviceType)
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{
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Lock::Locker lock(pManager->GetHandlerLock());
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for(HMDState* hmd = HMDs.GetFirst(); !HMDs.IsNull(hmd); hmd = hmd->pNext)
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hmd->NotifyAddDevice(deviceType);
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}
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void GlobalState::OnMessage(const Message& msg)
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{
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if (msg.Type == Message_DeviceAdded || msg.Type == Message_DeviceRemoved)
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{
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if (msg.pDevice == pManager)
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{
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const MessageDeviceStatus& statusMsg =
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static_cast<const MessageDeviceStatus&>(msg);
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if (msg.Type == Message_DeviceAdded)
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{
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//LogText("OnMessage DeviceAdded.\n");
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// We may have added a sensor/other device; notify any HMDs that might
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// need it to check for it later.
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NotifyHMDs_AddDevice(statusMsg.Handle.GetType());
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}
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else
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{
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//LogText("OnMessage DeviceRemoved.\n");
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}
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}
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}
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}
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}} // namespace OVR::CAPI
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