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| 1 // Copyright 2016 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 "device/vr/android/google_vr/google_vr_device.h" |
| 6 |
| 7 #include <math.h> |
| 8 #include <algorithm> |
| 9 |
| 10 #include "base/strings/string_util.h" |
| 11 #include "base/strings/utf_string_conversions.h" |
| 12 #include "base/time/time.h" |
| 13 #include "base/trace_event/trace_event.h" |
| 14 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/g
vr.h" |
| 15 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/g
vr_types.h" |
| 16 #include "ui/gfx/transform.h" |
| 17 #include "ui/gfx/transform_util.h" |
| 18 |
| 19 namespace device { |
| 20 |
| 21 GoogleVRDevice::GoogleVRDevice(VRDeviceProvider* provider, gvr::GvrApi* gvr) |
| 22 : VRDevice(provider), gvr_(gvr) {} |
| 23 |
| 24 GoogleVRDevice::~GoogleVRDevice() {} |
| 25 |
| 26 VRDisplayPtr GoogleVRDevice::GetVRDevice() { |
| 27 TRACE_EVENT0("input", "GoogleVRDevice::GetVRDevice"); |
| 28 VRDisplayPtr device = VRDisplay::New(); |
| 29 |
| 30 device->capabilities = VRDisplayCapabilities::New(); |
| 31 device->capabilities->hasOrientation = true; |
| 32 device->capabilities->hasPosition = false; |
| 33 device->capabilities->hasExternalDisplay = false; |
| 34 device->capabilities->canPresent = true; |
| 35 |
| 36 device->leftEye = VREyeParameters::New(); |
| 37 device->rightEye = VREyeParameters::New(); |
| 38 VREyeParametersPtr& left_eye = device->leftEye; |
| 39 VREyeParametersPtr& right_eye = device->rightEye; |
| 40 |
| 41 device->displayName = gvr_->GetViewerModel(); |
| 42 |
| 43 gvr::BufferViewportList gvr_buffer_viewports = |
| 44 gvr_->CreateEmptyBufferViewportList(); |
| 45 gvr_buffer_viewports.SetToRecommendedBufferViewports(); |
| 46 |
| 47 gvr::BufferViewport eye_viewport = gvr_->CreateBufferViewport(); |
| 48 gvr_buffer_viewports.GetBufferViewport(GVR_LEFT_EYE, &eye_viewport); |
| 49 gvr::Rectf eye_fov = eye_viewport.GetSourceFov(); |
| 50 left_eye->fieldOfView = VRFieldOfView::New(); |
| 51 left_eye->fieldOfView->upDegrees = eye_fov.top; |
| 52 left_eye->fieldOfView->downDegrees = eye_fov.bottom; |
| 53 left_eye->fieldOfView->leftDegrees = eye_fov.left; |
| 54 left_eye->fieldOfView->rightDegrees = eye_fov.right; |
| 55 |
| 56 eye_viewport = gvr_->CreateBufferViewport(); |
| 57 gvr_buffer_viewports.GetBufferViewport(GVR_RIGHT_EYE, &eye_viewport); |
| 58 eye_fov = eye_viewport.GetSourceFov(); |
| 59 right_eye->fieldOfView = VRFieldOfView::New(); |
| 60 right_eye->fieldOfView->upDegrees = eye_fov.top; |
| 61 right_eye->fieldOfView->downDegrees = eye_fov.bottom; |
| 62 right_eye->fieldOfView->leftDegrees = eye_fov.left; |
| 63 right_eye->fieldOfView->rightDegrees = eye_fov.right; |
| 64 |
| 65 gvr::Mat4f left_eye_mat = gvr_->GetEyeFromHeadMatrix(GVR_LEFT_EYE); |
| 66 gvr::Mat4f right_eye_mat = gvr_->GetEyeFromHeadMatrix(GVR_RIGHT_EYE); |
| 67 |
| 68 left_eye->offset = mojo::Array<float>::New(3); |
| 69 left_eye->offset[0] = -left_eye_mat.m[0][3]; |
| 70 left_eye->offset[1] = -left_eye_mat.m[1][3]; |
| 71 left_eye->offset[2] = -left_eye_mat.m[2][3]; |
| 72 |
| 73 right_eye->offset = mojo::Array<float>::New(3); |
| 74 right_eye->offset[0] = -right_eye_mat.m[0][3]; |
| 75 right_eye->offset[1] = -right_eye_mat.m[1][3]; |
| 76 right_eye->offset[2] = -right_eye_mat.m[2][3]; |
| 77 |
| 78 gvr::Sizei render_target_size = gvr_->GetRecommendedRenderTargetSize(); |
| 79 |
| 80 left_eye->renderWidth = render_target_size.width / 2; |
| 81 left_eye->renderHeight = render_target_size.height; |
| 82 |
| 83 right_eye->renderWidth = render_target_size.width / 2; |
| 84 right_eye->renderHeight = render_target_size.height; |
| 85 |
| 86 return device; |
| 87 } |
| 88 |
| 89 VRPosePtr GoogleVRDevice::GetPose() { |
| 90 TRACE_EVENT0("input", "GoogleVRDevice::GetSensorState"); |
| 91 VRPosePtr pose = VRPose::New(); |
| 92 |
| 93 pose->timestamp = base::Time::Now().ToJsTime(); |
| 94 |
| 95 gvr::Mat4f head_mat = gvr_->GetHeadPoseInStartSpace(gvr_get_time_point_now()); |
| 96 |
| 97 gfx::Transform inv_transform( |
| 98 head_mat.m[0][0], head_mat.m[0][1], head_mat.m[0][2], head_mat.m[0][3], |
| 99 head_mat.m[1][0], head_mat.m[1][1], head_mat.m[1][2], head_mat.m[1][3], |
| 100 head_mat.m[2][0], head_mat.m[2][1], head_mat.m[2][2], head_mat.m[2][3], |
| 101 head_mat.m[3][0], head_mat.m[3][1], head_mat.m[3][2], head_mat.m[3][3]); |
| 102 |
| 103 gfx::Transform transform; |
| 104 if (inv_transform.GetInverse(&transform)) { |
| 105 gfx::DecomposedTransform decomposed_transform; |
| 106 gfx::DecomposeTransform(&decomposed_transform, transform); |
| 107 |
| 108 pose->orientation = mojo::Array<float>::New(4); |
| 109 pose->orientation[0] = decomposed_transform.quaternion[0]; |
| 110 pose->orientation[1] = decomposed_transform.quaternion[1]; |
| 111 pose->orientation[2] = decomposed_transform.quaternion[2]; |
| 112 pose->orientation[3] = decomposed_transform.quaternion[3]; |
| 113 |
| 114 pose->position = mojo::Array<float>::New(3); |
| 115 pose->position[0] = decomposed_transform.translate[0]; |
| 116 pose->position[1] = decomposed_transform.translate[1]; |
| 117 pose->position[2] = decomposed_transform.translate[2]; |
| 118 } |
| 119 |
| 120 return pose; |
| 121 } |
| 122 |
| 123 void GoogleVRDevice::ResetPose() { |
| 124 gvr_->ResetTracking(); |
| 125 } |
| 126 |
| 127 } // namespace device |
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