| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "device/vr/android/cardboard/cardboard_vr_device.h" |
| |
| #include <math.h> |
| #include <algorithm> |
| |
| #include "base/android/context_utils.h" |
| #include "base/android/jni_android.h" |
| #include "base/android/jni_array.h" |
| #include "base/android/jni_string.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/time/time.h" |
| #include "base/trace_event/trace_event.h" |
| #include "jni/CardboardVRDevice_jni.h" |
| #include "ui/gfx/transform.h" |
| #include "ui/gfx/transform_util.h" |
| |
| using base::android::AttachCurrentThread; |
| using base::android::ScopedJavaLocalRef; |
| |
| namespace device { |
| |
| CardboardVRDevice::CardboardVRDevice(VRDeviceProvider* provider) |
| : VRDevice(provider) { |
| JNIEnv* env = AttachCurrentThread(); |
| j_cardboard_device_.Reset(Java_CardboardVRDevice_create( |
| env, base::android::GetApplicationContext())); |
| j_head_matrix_.Reset(env, env->NewFloatArray(16)); |
| } |
| |
| CardboardVRDevice::~CardboardVRDevice() { |
| Java_CardboardVRDevice_stopTracking(AttachCurrentThread(), |
| j_cardboard_device_.obj()); |
| } |
| |
| VRDisplayPtr CardboardVRDevice::GetVRDevice() { |
| TRACE_EVENT0("input", "CardboardVRDevice::GetVRDevice"); |
| VRDisplayPtr device = VRDisplay::New(); |
| |
| JNIEnv* env = AttachCurrentThread(); |
| |
| ScopedJavaLocalRef<jstring> j_device_name = |
| Java_CardboardVRDevice_getDeviceName(env, j_cardboard_device_.obj()); |
| device->displayName = |
| base::android::ConvertJavaStringToUTF8(env, j_device_name.obj()); |
| |
| ScopedJavaLocalRef<jfloatArray> j_fov(env, env->NewFloatArray(4)); |
| Java_CardboardVRDevice_getFieldOfView(env, j_cardboard_device_.obj(), |
| j_fov.obj()); |
| |
| std::vector<float> fov; |
| base::android::JavaFloatArrayToFloatVector(env, j_fov.obj(), &fov); |
| |
| device->capabilities = VRDisplayCapabilities::New(); |
| device->capabilities->hasOrientation = true; |
| device->capabilities->hasPosition = false; |
| device->capabilities->hasExternalDisplay = false; |
| device->capabilities->canPresent = false; |
| |
| device->leftEye = VREyeParameters::New(); |
| device->rightEye = VREyeParameters::New(); |
| VREyeParametersPtr& left_eye = device->leftEye; |
| VREyeParametersPtr& right_eye = device->rightEye; |
| |
| left_eye->fieldOfView = VRFieldOfView::New(); |
| left_eye->fieldOfView->upDegrees = fov[0]; |
| left_eye->fieldOfView->downDegrees = fov[1]; |
| left_eye->fieldOfView->leftDegrees = fov[2]; |
| left_eye->fieldOfView->rightDegrees = fov[3]; |
| |
| // Cardboard devices always assume a mirrored FOV, so this is just the left |
| // eye FOV with the left and right degrees swapped. |
| right_eye->fieldOfView = VRFieldOfView::New(); |
| right_eye->fieldOfView->upDegrees = fov[0]; |
| right_eye->fieldOfView->downDegrees = fov[1]; |
| right_eye->fieldOfView->leftDegrees = fov[3]; |
| right_eye->fieldOfView->rightDegrees = fov[2]; |
| |
| float ipd = Java_CardboardVRDevice_getIpd(env, j_cardboard_device_.obj()); |
| |
| left_eye->offset = mojo::Array<float>::New(3); |
| left_eye->offset[0] = ipd * -0.5f; |
| left_eye->offset[1] = 0.0f; |
| left_eye->offset[2] = 0.0f; |
| |
| right_eye->offset = mojo::Array<float>::New(3); |
| right_eye->offset[0] = ipd * 0.5f; |
| right_eye->offset[1] = 0.0f; |
| right_eye->offset[2] = 0.0f; |
| |
| ScopedJavaLocalRef<jintArray> j_screen_size(env, env->NewIntArray(2)); |
| Java_CardboardVRDevice_getScreenSize(env, j_cardboard_device_.obj(), |
| j_screen_size.obj()); |
| |
| std::vector<int> screen_size; |
| base::android::JavaIntArrayToIntVector(env, j_screen_size.obj(), |
| &screen_size); |
| |
| left_eye->renderWidth = screen_size[0] / 2.0; |
| left_eye->renderHeight = screen_size[1]; |
| |
| right_eye->renderWidth = screen_size[0] / 2.0; |
| right_eye->renderHeight = screen_size[1]; |
| |
| return device; |
| } |
| |
| VRPosePtr CardboardVRDevice::GetPose() { |
| TRACE_EVENT0("input", "CardboardVRDevice::GetSensorState"); |
| VRPosePtr pose = VRPose::New(); |
| |
| pose->timestamp = base::Time::Now().ToJsTime(); |
| |
| JNIEnv* env = AttachCurrentThread(); |
| Java_CardboardVRDevice_getSensorState(env, j_cardboard_device_.obj(), |
| j_head_matrix_.obj()); |
| |
| std::vector<float> head_matrix; |
| base::android::JavaFloatArrayToFloatVector(env, j_head_matrix_.obj(), |
| &head_matrix); |
| |
| gfx::Transform transform( |
| head_matrix[0], head_matrix[1], head_matrix[2], head_matrix[3], |
| head_matrix[4], head_matrix[5], head_matrix[6], head_matrix[7], |
| head_matrix[8], head_matrix[9], head_matrix[10], head_matrix[11], |
| head_matrix[12], head_matrix[13], head_matrix[14], head_matrix[15]); |
| |
| gfx::DecomposedTransform decomposed_transform; |
| gfx::DecomposeTransform(&decomposed_transform, transform); |
| |
| pose->orientation = mojo::Array<float>::New(4); |
| pose->orientation[0] = decomposed_transform.quaternion[0]; |
| pose->orientation[1] = decomposed_transform.quaternion[1]; |
| pose->orientation[2] = decomposed_transform.quaternion[2]; |
| pose->orientation[3] = decomposed_transform.quaternion[3]; |
| |
| pose->position = mojo::Array<float>::New(3); |
| pose->position[0] = decomposed_transform.translate[0]; |
| pose->position[1] = decomposed_transform.translate[1]; |
| pose->position[2] = decomposed_transform.translate[2]; |
| |
| return pose; |
| } |
| |
| void CardboardVRDevice::ResetPose() { |
| Java_CardboardVRDevice_resetSensor(AttachCurrentThread(), |
| j_cardboard_device_.obj()); |
| } |
| |
| } // namespace device |