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vadumpcaps

This is a utility to show all capabilities of a VAAPI device/driver.

Building

$ make

Installing

$ make install

installs to /usr/local, or

$ make PREFIX=/somewhere/else install

installs to /somewhere/else.

Running

$ vadumpcaps

will dump capabilities of the first DRM device with its default driver. The output format is JSON, but is (intended to be) human-readable.

If you have multiple devices you can select which one to use with the -d option:

$ vadumpcaps -d /dev/dri/renderD129

If you have multiple drivers you can select which one to use with the -r option:

$ vadumpcaps -d /dev/dri/renderD128 -r i965

If you want to test a driver without installing it you can set the libva LIBVA_DRIVERS_PATH environment variable to point at the directory containing the name_drv_video.so file:

$ LIBVA_DRIVERS_PATH=/path/to/ihd/build/media_driver/ vadumpcaps -r iHD

General options:

  • -h, --help: Show help.
  • -i, --indent: Set indent level for pretty-printing (defaults to four spaces).
  • -u, --ugly: Ugly-print (do not include any whitespace in the JSON).
  • -d, --device: Set device to use (defaults to /dev/dri/renderD128).
  • -r, --driver: Set name of driver to load.

Output selection options:

  • -a, --all: Dump all capabilities.
  • -p, --profiles: Dump profiles.
  • -e, --entrypoints: Dump entrypoints.
  • -t, --attributes: Dump attributes.
  • -s, --surface-formats: Dump surface formats.
  • -f, --filters: Dump filters.
  • -c, --filter-caps: Dump filter capabilities.
  • -l, --pipeline-caps: Dump pipeline capabilities.
  • -m, --image-formats: Dump image formats.
  • -b, --subpicture-formats: Dump subpicture formats.