content/renderer/vr/vr_dispatcher.cc

   1 // Copyright 2015 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/vr/vr_dispatcher.h"
   6
   7 #include "content/public/common/service_registry.h"
   8 #include "content/renderer/vr/vr_type_converters.h"
   9
  10 namespace content {
  11
  12 VRDispatcher::VRDispatcher(ServiceRegistry* service_registry)
  13     : service_registry_(service_registry) {
  14 }
  15
  16 VRDispatcher::~VRDispatcher() {
  17 }
  18
  19 VRServicePtr& VRDispatcher::GetVRServicePtr() {
  20   if (!vr_service_) {
  21     service_registry_->ConnectToRemoteService(mojo::GetProxy(&vr_service_));
  22   }
  23   return vr_service_;
  24 }
  25
  26 void VRDispatcher::getDevices(blink::WebVRGetDevicesCallback* callback) {
  27   int request_id = pending_requests_.Add(callback);
  28   GetVRServicePtr()->GetDevices(base::Bind(&VRDispatcher::OnGetDevices,
  29                                            base::Unretained(this), request_id));
  30 }
  31
  32 void VRDispatcher::getSensorState(unsigned int index,
  33                                   blink::WebHMDSensorState& state) {
  34   GetVRServicePtr()->GetSensorState(
  35       index,
  36       base::Bind(&VRDispatcher::OnGetSensorState, base::Unretained(&state)));
  37
  38   // This call needs to return results synchronously in order to be useful and
  39   // provide the lowest latency results possible.
  40   GetVRServicePtr().WaitForIncomingResponse();
  41 }
  42
  43 void VRDispatcher::resetSensor(unsigned int index) {
  44   GetVRServicePtr()->ResetSensor(index);
  45 }
  46
  47 void VRDispatcher::OnGetDevices(int request_id,
  48                                 const mojo::Array<VRDeviceInfoPtr>& devices) {
  49   blink::WebVector<blink::WebVRDevice> web_devices(devices.size());
  50
  51   blink::WebVRGetDevicesCallback* callback =
  52       pending_requests_.Lookup(request_id);
  53   if (!callback)
  54     return;
  55
  56   for (size_t i = 0; i < devices.size(); ++i) {
  57     web_devices[i] = devices[i].To<blink::WebVRDevice>();
  58   }
  59
  60   callback->onSuccess(&web_devices);
  61   pending_requests_.Remove(request_id);
  62 }
  63
  64 void VRDispatcher::OnGetSensorState(blink::WebHMDSensorState* state,
  65                                     const VRSensorStatePtr& mojo_state) {
  66   *state = mojo_state.To<blink::WebHMDSensorState>();
  67 }
  68
  69 }  // namespace content