在64位平台上无法正常运行的非托管代码

I am using a code which captures a frame from a video which I found in CodeProject

我正在使用一个代码来捕获我在CodeProject中找到的视频中的帧

The code runs great on 32bit, the problem starts when I try to run on 64bit systems.

代码在32位上运行良好，当我尝试在64位系统上运行时问题就出现了。

The exception thrown is "AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory has been corrupted"

引发的异常是“AccessViolationException：尝试读取或写入受保护的内存。这通常表示其他内存已损坏”

I debugged in 32bit and in 64bit platforms and found where the problem is-

我在32位和64位平台上调试，发现问题出在哪里 -

mediaType = new AMMediaType();

mediaDet.get_StreamMediaType(mediaType);

videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.formatPtr, typeof(VideoInfoHeader));

After the second line I looked at mediaType contents and it is completely different in 64bit over 32, which causes the next line to throw the exception(mediaType.formatPtr has different value)

在第二行之后我查看了mediaType内容，它在64位超过32时完全不同，这导致下一行抛出异常（mediaType.formatPtr具有不同的值）

I assume the problem is with the type "IntPtr" which size is different on the 2 platforms(4 vs 8 bytes) the thing is that I don't know how to overcome this problem.

我假设问题是“IntPtr”类型，在2个平台上大小不同（4对8字节），我不知道如何克服这个问题。

Any kind of help would be good, thanks in advance, Liran.

任何形式的帮助都会很好，谢谢提前，Liran。

1 个解决方案

#1

found the solution - the problem lies within the DirectShow DLL, FrameGrabber referenced an old version of the dll, I downloaded and replaced the reference with their latest DLL and problem solved.

发现解决方案 - 问题在于DirectShow DLL，FrameGrabber引用了旧版本的dll，我下载并用最新的DLL替换了引用并解决了问题。

Thanks for your post, Liran.

感谢您的帖子，Liran。

#1