Android cat report_descriptor

Report descriptors are used to describe the format and content of data that is exchanged between a USB device and a USB host. In Android, report descriptors are used in conjunction with USB HID (Human Interface Device) devices, such as keyboards, mice, and game controllers.

The report descriptor is a binary data structure that is defined by the USB HID specification. It describes the format of input and output reports that are exchanged between the device and the host. The report descriptor is generated by the device and sent to the host during the enumeration process.

In Android, the report descriptor can be accessed using the USB Host API. The Android USB Host API provides a way to communicate with USB devices in host mode. The API includes classes and methods for discovering and connecting to USB devices, as well as for transferring data to and from the device.

To access the report descriptor of a USB HID device in Android, you can use the UsbDeviceConnection.getReportDescriptor() method. This method returns a byte array that contains the binary data of the report descriptor.

Once you have obtained the report descriptor, you can parse it to determine the format and content of the input and output reports. This information can be used to develop applications that communicate with USB HID devices in Android.