Adding Chrome-side WebVR interface

content/renderer/vr/vr_type_converters.cc

+// 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 "content/renderer/vr/vr_type_converters.h"
+
+#include <algorithm>
+
+using content::VRVector3Ptr;
+using content::VRVector4Ptr;
+using content::VRRectPtr;
+using content::VRFieldOfViewPtr;
+using content::VREyeParametersPtr;
+using content::VRHMDInfoPtr;
+using content::VRDeviceInfoPtr;
+using content::VRSensorStatePtr;
+
+namespace mojo {
+
+// static
+blink::WebVRVector3
+TypeConverter<blink::WebVRVector3, VRVector3Ptr>::Convert(
+    const VRVector3Ptr& input) {
+  blink::WebVRVector3 output;
+  output.x = input->x;
+  output.y = input->y;
+  output.z = input->z;
+  return output;
+}
+
+// static
+blink::WebVRVector4
+TypeConverter<blink::WebVRVector4, VRVector4Ptr>::Convert(
+    const VRVector4Ptr& input) {
+  blink::WebVRVector4 output;
+  output.x = input->x;
+  output.y = input->y;
+  output.z = input->z;
+  output.w = input->w;
+  return output;
+}
+
+// static
+blink::WebVRRect
+TypeConverter<blink::WebVRRect, VRRectPtr>::Convert(
+    const VRRectPtr& input) {
+  blink::WebVRRect output;
+  output.x = input->x;
+  output.y = input->y;
+  output.width = input->width;
+  output.height = input->height;
+  return output;
+}
+
+// static
+blink::WebVRFieldOfView
+TypeConverter<blink::WebVRFieldOfView, VRFieldOfViewPtr>::Convert(
+    const VRFieldOfViewPtr& input) {
+  blink::WebVRFieldOfView output;
+  output.upDegrees = input->upDegrees;
+  output.downDegrees = input->downDegrees;
+  output.leftDegrees = input->leftDegrees;
+  output.rightDegrees = input->rightDegrees;
+  return output;
+}
+
+// static
+blink::WebVREyeParameters
+TypeConverter<blink::WebVREyeParameters, VREyeParametersPtr>::Convert(
+    const VREyeParametersPtr& input) {
+  blink::WebVREyeParameters output;
+  output.minimumFieldOfView =
+      input->minimumFieldOfView.To<blink::WebVRFieldOfView>();
+  output.maximumFieldOfView =
+      input->maximumFieldOfView.To<blink::WebVRFieldOfView>();
+  output.recommendedFieldOfView =
+      input->recommendedFieldOfView.To<blink::WebVRFieldOfView>();
+  output.eyeTranslation = input->eyeTranslation.To<blink::WebVRVector3>();
+  output.renderRect = input->renderRect.To<blink::WebVRRect>();
+  return output;
+}
+
+// static
+blink::WebVRHMDInfo
+TypeConverter<blink::WebVRHMDInfo, VRHMDInfoPtr>::Convert(
+    const VRHMDInfoPtr& input) {
+  blink::WebVRHMDInfo output;
+  output.leftEye = input->leftEye.To<blink::WebVREyeParameters>();
+  output.rightEye = input->rightEye.To<blink::WebVREyeParameters>();
+  return output;
+}
+
+// static
+blink::WebVRDevice
+TypeConverter<blink::WebVRDevice, VRDeviceInfoPtr>::Convert(
+    const VRDeviceInfoPtr& input) {
+  blink::WebVRDevice output;
+  memset(&output, 0, sizeof(blink::WebVRDevice));
+
+  output.index = input->index;
+  output.flags = blink::WebVRDeviceTypePosition;
+
+  memcpy(output.deviceName, input->deviceName.data(),

[Tom Sepez, 2015/06/01 18:26:28]

blink::WebVRDevice::deviceName is of type unsigned short[128], (e.g. UTF-16) but
I thought that Mojo strings were UTF-8.

+      std::min(blink::WebVRDevice::deviceNameLengthCap-1,
+          input->deviceName.size()));
+
+  if (!input->hmdInfo.is_null()) {
+    output.flags |= blink::WebVRDeviceTypeHMD;
+    output.hmdInfo = input->hmdInfo.To<blink::WebVRHMDInfo>();
+  }
+
+  return output;
+}
+
+// static
+blink::WebHMDSensorState
+TypeConverter<blink::WebHMDSensorState, VRSensorStatePtr>::Convert(
+    const VRSensorStatePtr& input) {
+  blink::WebHMDSensorState output;
+  output.timestamp = input->timestamp;
+  output.frameIndex = input->frameIndex;
+  output.flags = 0;
+
+  if (!input->orientation.is_null()) {
+    output.flags |= blink::WebVRSensorStateOrientation;
+    output.orientation = input->orientation.To<blink::WebVRVector4>();
+  }
+  if (!input->position.is_null()) {
+    output.flags |= blink::WebVRSensorStatePosition;
+    output.position = input->position.To<blink::WebVRVector3>();
+  }
+  if (!input->angularVelocity.is_null()) {
+    output.flags |= blink::WebVRSensorStateAngularVelocity;
+    output.angularVelocity = input->angularVelocity.To<blink::WebVRVector3>();
+  }
+  if (!input->linearVelocity.is_null()) {
+    output.flags |= blink::WebVRSensorStateLinearVelocity;
+    output.linearVelocity = input->linearVelocity.To<blink::WebVRVector3>();
+  }
+  if (!input->angularAcceleration.is_null()) {
+    output.flags |= blink::WebVRSensorStateAngularAcceleration;
+    output.angularAcceleration =
+        input->angularAcceleration.To<blink::WebVRVector3>();
+  }
+  if (!input->linearAcceleration.is_null()) {
+    output.flags |= blink::WebVRSensorStateLinearAcceleration;
+    output.linearAcceleration =
+        input->linearAcceleration.To<blink::WebVRVector3>();
+  }
+
+  return output;
+}
+
+}  // namespace mojo