tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Pose.cpp (1955B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
      5 * You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/Pose.h"
      8 
      9 #include "js/experimental/TypedData.h"  // JS_GetFloat32ArrayData
     10 #include "mozilla/ErrorResult.h"
     11 #include "mozilla/HoldDropJSObjects.h"
     12 #include "mozilla/dom/TypedArray.h"
     13 
     14 namespace mozilla::dom {
     15 
     16 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_WITH_JS_MEMBERS(
     17    Pose, (mParent),
     18    (mPosition, mLinearVelocity, mLinearAcceleration, mOrientation,
     19     mAngularVelocity, mAngularAcceleration))
     20 
     21 Pose::Pose(nsISupports* aParent)
     22    : mParent(aParent),
     23      mPosition(nullptr),
     24      mLinearVelocity(nullptr),
     25      mLinearAcceleration(nullptr),
     26      mOrientation(nullptr),
     27      mAngularVelocity(nullptr),
     28      mAngularAcceleration(nullptr) {
     29  mozilla::HoldJSObjects(this);
     30 }
     31 
     32 Pose::~Pose() { mozilla::DropJSObjects(this); }
     33 
     34 nsISupports* Pose::GetParentObject() const { return mParent; }
     35 
     36 void Pose::SetFloat32Array(JSContext* aJSContext, nsWrapperCache* creator,
     37                           JS::MutableHandle<JSObject*> aRetVal,
     38                           JS::Heap<JSObject*>& aObj, float* aVal,
     39                           uint32_t aValLength, ErrorResult& aRv) {
     40  if (!aVal) {
     41    aRetVal.set(nullptr);
     42    return;
     43  }
     44 
     45  if (!aObj) {
     46    aObj =
     47        Float32Array::Create(aJSContext, creator, Span(aVal, aValLength), aRv);
     48    if (aRv.Failed()) {
     49      return;
     50    }
     51  } else {
     52    JS::AutoCheckCannotGC nogc;
     53    bool isShared = false;
     54    JS::Rooted<JSObject*> obj(aJSContext, aObj.get());
     55    float* data = JS_GetFloat32ArrayData(obj, &isShared, nogc);
     56    if (data) {
     57      memcpy(data, aVal, aValLength * sizeof(float));
     58    }
     59  }
     60 
     61  aRetVal.set(aObj);
     62 }
     63 
     64 }  // namespace mozilla::dom