1 files changed, 89 insertions, 0 deletions
diff --git a/gfx/vr/service/OpenVRControllerMapper.cpp b/gfx/vr/service/OpenVRControllerMapper.cpp
new file mode 100644
index 0000000000..7cb4cfb563
--- /dev/null
+++ b/gfx/vr/service/OpenVRControllerMapper.cpp
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "OpenVRControllerMapper.h"
+#include "mozilla/StaticPrefs_dom.h"
+
+#include "VRSession.h"
+
+namespace mozilla::gfx {
+
+OpenVRControllerMapper::OpenVRControllerMapper()
+    : mNumButtons(0), mNumAxes(0) {}
+
+void OpenVRControllerMapper::GetButtonValueFromAction(
+    VRControllerState& aControllerState, const ControllerAction& aPressAction,
+    const ControllerAction& aTouchAction) {
+  vr::InputDigitalActionData_t actionData = {};
+  bool bPressed = false;
+  bool bTouched = false;
+  uint64_t mask = 0;
+
+  if (aPressAction.handle &&
+      vr::VRInput()->GetDigitalActionData(
+          aPressAction.handle, &actionData, sizeof(actionData),
+          vr::k_ulInvalidInputValueHandle) == vr::VRInputError_None &&
+      actionData.bActive) {
+    bPressed = actionData.bState;
+    mask = (1ULL << mNumButtons);
+    aControllerState.triggerValue[mNumButtons] = bPressed ? 1.0 : 0.0f;
+    if (bPressed) {
+      aControllerState.buttonPressed |= mask;
+    } else {
+      aControllerState.buttonPressed &= ~mask;
+    }
+    if (aTouchAction.handle &&
+        vr::VRInput()->GetDigitalActionData(
+            aTouchAction.handle, &actionData, sizeof(actionData),
+            vr::k_ulInvalidInputValueHandle) == vr::VRInputError_None) {
+      bTouched = actionData.bActive && actionData.bState;
+      mask = (1ULL << mNumButtons);
+      if (bTouched) {
+        aControllerState.buttonTouched |= mask;
+      } else {
+        aControllerState.buttonTouched &= ~mask;
+      }
+    }
+    ++mNumButtons;
+  }
+}
+
+void OpenVRControllerMapper::GetTriggerValueFromAction(
+    VRControllerState& aControllerState, const ControllerAction& aAction) {
+  vr::InputAnalogActionData_t analogData = {};
+  const float triggerThreshold =
+      StaticPrefs::dom_vr_controller_trigger_threshold();
+
+  if (aAction.handle &&
+      vr::VRInput()->GetAnalogActionData(
+          aAction.handle, &analogData, sizeof(analogData),
+          vr::k_ulInvalidInputValueHandle) == vr::VRInputError_None &&
+      analogData.bActive) {
+    VRSession::UpdateTrigger(aControllerState, mNumButtons, analogData.x,
+                             triggerThreshold);
+    ++mNumButtons;
+  }
+}
+
+void OpenVRControllerMapper::GetAxisValueFromAction(
+    VRControllerState& aControllerState, const ControllerAction& aAction,
+    bool aInvertAxis) {
+  vr::InputAnalogActionData_t analogData = {};
+  const float yAxisInvert = (aInvertAxis) ? -1.0f : 1.0f;
+
+  if (aAction.handle &&
+      vr::VRInput()->GetAnalogActionData(
+          aAction.handle, &analogData, sizeof(analogData),
+          vr::k_ulInvalidInputValueHandle) == vr::VRInputError_None &&
+      analogData.bActive) {
+    aControllerState.axisValue[mNumAxes] = analogData.x;
+    ++mNumAxes;
+    aControllerState.axisValue[mNumAxes] = analogData.y * yAxisInvert;
+    ++mNumAxes;
+  }
+}
+
+}  // namespace mozilla::gfx