从Android相机即时加密视频 [英] Encrypt video on the fly from android camera

问题描述

我想即时加密android摄像机捕获的视频.因此，我需要告诉android MediaRecorder 将其视频流写入我的 CipherOutputStream .问题是 MediaRecorder.setOutputFile()方法仅接受 FileDescriptor ，并且无法从CipherOutputStream获取加密文件描述符.

I want to encrypt video on the fly that android camera captures. So I need to tell android MediaRecorder to write it video stream to my CipherOutputStream. The problem is MediaRecorder.setOutputFile() method accepts only FileDescriptor and there is no way to get encrypting file descriptor from CipherOutputStream.

所以我的问题是我该如何仿真FileDescriptor来接收数据写入并手动进行加密，或者以某种方式说服 MediaRecorder 将视频流式传输到 CipherOutputStream .

So my question is how can I either emulate FileDescriptor to receive data writes and do encryption manually or somehow convince MediaRecorder to stream video into CipherOutputStream.

推荐答案

您可以使用LocalServerSocket和LocalSocket来实现所需的内容.

You can use LocalServerSocket and LocalSocket to implement what you want.

LocalServerSocket，它通过LocalServerSocket.getFileDescriptor()提供FileDescriptor

LocalServerSocket which provides the FileDescriptor via LocalServerSocket.getFileDescriptor()

1. 启动LocalServerSocket.
2. 启动LocalSocket对象并连接到LocalServerSocket.
3. 调用LocalServerSocket.accept()以接受来自LocalSocket的连接.
4. 建立连接后，可以从LocalServerSocket获取FileDescriptor.
5. 可以从LocalSocket.getInputStream()中检索相机写入LocalServerSocket的每个字节，您可以使用for循环获取字节流并写入CipherOutputStream.

请记住将所有步骤都放到新线程中.

Remember to put all steps into a new Thread.

我使用这些API创建了以Camera作为流源的即时流处理器.

I used those APIs to create on-the-fly stream processor with the Camera as stream source.

我希望这会有所帮助.

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