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android / platform / external / libkmsxx / 5b6da2e7ea259ebc65bcf5fb174e84319061db1d
commit5b6da2e7ea259ebc65bcf5fb174e84319061db1d[log] [tgz]
authorHaibo Huang <hhb@google.com>Tue Dec 01 04:44:06 2020 -0800
committerAlistair Delva <adelva@google.com>Tue Dec 01 18:47:05 2020 +0000
treefda98c64f9adc0b2f7af4e8d581fd4b9b6ef4fcd
parent30b3a106684e6008478588ffad8207b87f26d0da [diff]
parent6fa8696774c4bda4bb7e3efabd7e1e58a899f5c1 [diff]
Upgrade libkmsxx to 6fa8696774c4bda4bb7e3efabd7e1e58a899f5c1

Test: make
Exempt-From-Owner-Approval: my ldap changed
[adelva: updated OWNERS with my new LDAP]
Change-Id: I89587f0eb3fd620963dfbb817f30a62dda78b1f2
tree: fda98c64f9adc0b2f7af4e8d581fd4b9b6ef4fcd
  1. ext/
  2. kms++/
  3. kms++util/
  4. kmscube/
  5. py/
  6. scripts/
  7. utils/
  8. .clang-format
  9. .clang-tidy
  10. .gitignore
  11. .gitmodules
  12. .travis.yml
  13. Android.bp
  14. CMakeLists.txt
  15. LICENSE
  16. LTO.cmake
  17. meson.build
  18. meson_options.txt
  19. METADATA
  20. MODULE_LICENSE_MPL2
  21. OWNERS
  22. README.md
  23. TODO
README.md

Build Status

kms++ - C++ library for kernel mode setting

kms++ is a C++17 library for kernel mode setting.

Also included are some simple utilities for KMS and python bindings for kms++.

Utilities

  • kmstest - set modes and planes and show test pattern on crtcs/planes, and test page flips
  • kmsprint - print information about DRM objects
  • kmsview - view raw images
  • kmscube - rotating 3D cube on crtcs/planes
  • kmscapture - show captured frames from a camera on screen

Dependencies:

  • libdrm
  • Python 3.x (for python bindings)

Build instructions:

To build the Python bindings you need to set up the git-submodule for pybind11:

git submodule update --init

And to compile:

meson build
ninja -C build

Cross compiling instructions:

meson build --cross-file=<path-to-meson-cross-file>
ninja -C build

Here is my cross file for arm32 (where ${BROOT} is path to my buildroot output dir):

[binaries]
c = ['ccache', '${BROOT}/host/bin/arm-buildroot-linux-gnueabihf-gcc']
cpp = ['ccache', '${BROOT}/host/bin/arm-buildroot-linux-gnueabihf-g++']
ar = '${BROOT}/host/bin/arm-buildroot-linux-gnueabihf-ar'
strip = '${BROOT}/host/bin/arm-buildroot-linux-gnueabihf-strip'
pkgconfig = '${BROOT}/host/bin/pkg-config'

[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'arm'
endian = 'little'

Build options

You can use meson options to configure the build. E.g.

meson build -Dbuildtype=debug -Dkmscube=true

Use meson configure build to see all the configuration options and their current values.

kms++ specific build options are:

Option nameValuesDefaultNotes
pykmstrue, falsetruePython bindings
kmscubetrue, falsefalseGLES kmscube
omapenabled, disabled, autoautolibdrm-omap support

Env variables

You can use the following runtime environmental variables to control the behavior of kms++.

VariableDescription
KMSXX_DISABLE_UNIVERSAL_PLANESSet to disable the use of universal planes
KMSXX_DISABLE_ATOMICSet to disable the use of atomic modesetting
KMSXX_DEVICEPath to the card device node to use
KMSXX_DRIVERName of the driver to use. The format is either “drvname” or “drvname:idx”

Python notes

You can run the python code directly from the build dir by defining PYTHONPATH env variable. For example:

PYTHONPATH=build/py py/tests/hpd.py