JavaScript对象的js-ctypes [英] js-ctypes from javascript objects

问题描述

我正在开发一个Firefox扩展，它接收二进制图像作为 uint8_t 的阵列缓冲区。

我的扩展我加载一个.dll文件，有一个功能，我需要使用该接收到的图像。该函数接受一个 ctype.uint8_t.ptr 参数并返回一个 ctype.uint8_t.ptr 值。

似乎无法找到将 ArrayBuffer 转换为此特定ctype的方法，以便我可以将它传递给该函数。有没有一个正确的方法来做到这一点？

使用ImplicitConvert（）给出错误：参数必须是非负整数。

解决方案

您应该可以做到：

  var a = new Uint8Array（1 << 10）; 
 var ptr = new ctypes.uint8_t.ptr（a.buffer）; 
  

这个东西似乎没有记录，但有一个一些测试，证明了这一点。 b $ b

I'm working on a Firefox extension that receives binary images as ArrayBuffers of uint8_t.

In my extension I load a .dll file that has a function that I need to use on that received image. The function takes a ctype.uint8_t.ptr parameter and returns a ctype.uint8_t.ptr value.

I can't seem to find a way of converting the ArrayBuffer to this particular ctype so that I can pass it along to the function. Is there a correct way to do this?

Using ImplicitConvert() gives an Error: argument must be a nonnegative integer.

解决方案

You should be able to do just:

var a = new Uint8Array(1<<10);
var ptr = new ctypes.uint8_t.ptr(a.buffer);

The stuff is not documented it seems, but there are some tests that demonstrate this.

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