如何允许 Android app(TV-box) 识别或访问 USB 网络摄像头？

Question

我目前正在尝试在 Android 电视 set-top 机顶盒上开发 Android 视频会议应用程序。众所周知，Android 电视盒没有摄像头，因此我尝试使用 USB 网络摄像头，但 OS 无法识别 USB 摄像头并且无法从中检索视频源.

有没有办法确保我的 Android 应用程序能够接收来自 USB 摄像头的视频？

谢谢你，如果我不恰当地写了这个问题，我很抱歉，这是我第一次使用 Whosebug。

Answer 1

你有两个选择：

1) 找到 Android 支持外接摄像头的电视设备。来自 Android Compatibility Definition Document

第 7.5.3 节。外置摄像头

Device implementations MAY include support for an external camera that is not necessarily
always connected. If a device includes support for an external camera, it:

* MUST declare the platform feature flag
  android.hardware.camera.external and android.hardware camera.any .
* MAY support multiple cameras.
* MUST support USB Video Class (UVC 1.0 or higher) if the
  external camera connects through the USB port.
* SHOULD support video compressions such as MJPEG to enable transfer
  of high-quality unencoded streams (i.e. raw or independently compressed picture streams).
* MAY support camera-based video encoding. If supported, a simultaneous
  unencoded / MJPEG stream (QVGA or greater resolution) MUST be
  accessible to the device implementation.

或

2) 创建您自己的自定义 ROM，这需要具有满足上述要求的代码和驱动程序。这很重要，涉及 creating/integrating/testing 您自己的驱动程序，对于 Whosebug 问题来说太宽泛了。

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