wfd-writeback

Write the contents of a port to memory

Syntax:

wfd-writeback   -ddevice_id -pport_id [options]
                [-ccount]
                [-frgba8888|rgbx8888|rgb888|rgb565|yvyu|uyvy|yuy2]
                [-hheight]
                [-ncount]
                [-q]
                [-ttimeout]
                [-wwidth]
            

Runs on:

QNX OS

Options:

-d device_id
Specify the device ID. Default is 2.
-p port_id
Specify the port ID. Default is 2.
-c count
Specify the number of writeback buffers to acquire. Default is 10.
-f rgba8888|rgbx8888|rgb888|rgb565|yvyu|uyvy|yuy2
Specify the writeback format. Choose from the following:
  • rgba8888
  • rgbx8888 (default)
  • rgb888
  • rgb565
  • yvyu
  • uyvy
  • yuy2
-h height
Specify the writeback source or destination's rectangular height. Default is 0.
-n count
Specify the number of writeback buffers. Default is 3.
-q
Run in quiet mode. Disables console logging of captured frames.
-t timeout
Specify the wait time in milliseconds to acquire an image. Where 0 is don't wait and -1 waits forever.
-w width
Specify the writeback source or destination's rectangular width. Default is 0.

Description

wfd-writeback uses the WFD server to writeback the contents of a port to memory. Ensure that writeback is supported by the WFD-driver and the writeback port enabled in the Screen configuration file.

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