1 files changed, 112 insertions, 0 deletions
diff --git a/dom/gamepad/GamepadPoseState.h b/dom/gamepad/GamepadPoseState.h
new file mode 100644
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+++ b/dom/gamepad/GamepadPoseState.h
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+/* -*- 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/. */
+
+#ifndef mozilla_dom_gamepad_GamepadPoseState_h_
+#define mozilla_dom_gamepad_GamepadPoseState_h_
+
+namespace mozilla {
+namespace dom {
+
+enum class GamepadCapabilityFlags : uint16_t {
+  Cap_None = 0,
+  /**
+   * Cap_Position is set if the Gamepad is capable of tracking its position.
+   */
+  Cap_Position = 1 << 1,
+  /**
+   * Cap_Orientation is set if the Gamepad is capable of tracking its
+   * orientation.
+   */
+  Cap_Orientation = 1 << 2,
+  /**
+   * Cap_AngularAcceleration is set if the Gamepad is capable of tracking its
+   * angular acceleration.
+   */
+  Cap_AngularAcceleration = 1 << 3,
+  /**
+   * Cap_LinearAcceleration is set if the Gamepad is capable of tracking its
+   * linear acceleration.
+   */
+  Cap_LinearAcceleration = 1 << 4,
+  /**
+   * Cap_GripSpacePosition is set if the Gamepad has a grip space position.
+   */
+  Cap_GripSpacePosition = 1 << 5,
+  /**
+   * Cap_PositionEmulated is set if the VRDisplay is capable of setting a
+   * emulated position (e.g. neck model) even if still doesn't support 6DOF
+   * tracking.
+   */
+  Cap_PositionEmulated = 1 << 6,
+  /**
+   * Cap_All used for validity checking during IPC serialization
+   */
+  Cap_All = (1 << 7) - 1
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(GamepadCapabilityFlags)
+
+struct GamepadPoseState {
+  GamepadCapabilityFlags flags;
+  float orientation[4];
+  float position[3];
+  float angularVelocity[3];
+  float angularAcceleration[3];
+  float linearVelocity[3];
+  float linearAcceleration[3];
+  bool isPositionValid;
+  bool isOrientationValid;
+
+  GamepadPoseState()
+      : flags(GamepadCapabilityFlags::Cap_None),
+        orientation{0, 0, 0, 0},
+        position{0, 0, 0},
+        angularVelocity{0, 0, 0},
+        angularAcceleration{0, 0, 0},
+        linearVelocity{0, 0, 0},
+        linearAcceleration{0, 0, 0},
+        isPositionValid(false),
+        isOrientationValid(false) {}
+
+  bool operator==(const GamepadPoseState& aPose) const {
+    return flags == aPose.flags && orientation[0] == aPose.orientation[0] &&
+           orientation[1] == aPose.orientation[1] &&
+           orientation[2] == aPose.orientation[2] &&
+           orientation[3] == aPose.orientation[3] &&
+           position[0] == aPose.position[0] &&
+           position[1] == aPose.position[1] &&
+           position[2] == aPose.position[2] &&
+           angularVelocity[0] == aPose.angularVelocity[0] &&
+           angularVelocity[1] == aPose.angularVelocity[1] &&
+           angularVelocity[2] == aPose.angularVelocity[2] &&
+           angularAcceleration[0] == aPose.angularAcceleration[0] &&
+           angularAcceleration[1] == aPose.angularAcceleration[1] &&
+           angularAcceleration[2] == aPose.angularAcceleration[2] &&
+           linearVelocity[0] == aPose.linearVelocity[0] &&
+           linearVelocity[1] == aPose.linearVelocity[1] &&
+           linearVelocity[2] == aPose.linearVelocity[2] &&
+           linearAcceleration[0] == aPose.linearAcceleration[0] &&
+           linearAcceleration[1] == aPose.linearAcceleration[1] &&
+           linearAcceleration[2] == aPose.linearAcceleration[2] &&
+           isPositionValid == aPose.isPositionValid &&
+           isOrientationValid == aPose.isOrientationValid;
+  }
+
+  bool operator!=(const GamepadPoseState& aPose) const {
+    return !(*this == aPose);
+  }
+
+  void Clear() {
+    memset(&flags, 0,
+           reinterpret_cast<char*>(&isOrientationValid) +
+               sizeof(isOrientationValid) - reinterpret_cast<char*>(&flags));
+  }
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_gamepad_GamepadPoseState_h_