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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