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android / platform / external / libkmsxx / 0e3e4ad0f4b2f859fc392971b8f4f678815cfb64
commit0e3e4ad0f4b2f859fc392971b8f4f678815cfb64[log] [tgz]
authorAlistair Strachan <astrachan@google.com>Fri Aug 31 11:08:09 2018 -0700
committerAlistair Strachan <astrachan@google.com>Thu Sep 27 12:37:34 2018 -0700
treea1b98f3c997a5b7502b1c9961ed87aa26d78cab0
parent32cb9d6502fd72e3de02d206fa0191769f0b97da [diff]
Add metadata files and update LICENSE for modedb_cea.cpp

Bug: 110964307
Change-Id: I208204f7e8873e2d454aa89a79cc3507afc98763
Signed-off-by: Alistair Strachan <astrachan@google.com>
4 files changed
tree: a1b98f3c997a5b7502b1c9961ed87aa26d78cab0
  1. ext/
  2. kms++/
  3. kms++util/
  4. kmscube/
  5. py/
  6. scripts/
  7. utils/
  8. NOTICE ⇨ LICENSE
  9. .gitignore
  10. .gitmodules
  11. .travis.yml
  12. CMakeLists.txt
  13. LICENSE
  14. LTO.cmake
  15. METADATA
  16. MODULE_LICENSE_MPL2
  17. README.md
  18. TODO
README.md

Build Status

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

kms++ is a C++11 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:

$ mkdir build
$ cd build
$ cmake ..
$ make -j4

Cross compiling instructions:

Directions for cross compiling depend on your environment.

These are for mine with buildroot:

$ mkdir build
$ cd build
$ cmake -DCMAKE_TOOLCHAIN_FILE=<buildrootpath>/output/host/usr/share/buildroot/toolchainfile.cmake ..
$ make -j4

Your environment may provide similar toolchainfile. If not, you can create a toolchainfile of your own, something along these lines:

SET(CMAKE_SYSTEM_NAME Linux)

SET(BROOT "<buildroot>/output/")

# specify the cross compiler
SET(CMAKE_C_COMPILER   ${BROOT}/host/usr/bin/arm-buildroot-linux-gnueabihf-gcc)
SET(CMAKE_CXX_COMPILER ${BROOT}/host/usr/bin/arm-buildroot-linux-gnueabihf-g++)

# where is the target environment
SET(CMAKE_FIND_ROOT_PATH ${BROOT}/target ${BROOT}/host)

SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

Build options

You can use the following cmake flags to control the build. Use -DFLAG=VALUE to set them.

Option nameValuesDefaultNotes
CMAKE_BUILD_TYPERelease/DebugRelease
BUILD_SHARED_LIBSON/OFFOFF
KMSXX_ENABLE_PYTHONON/OFFON
KMSXX_ENABLE_KMSCUBEON/OFFOFF
KMSXX_PYTHON_VERSIONpython3/python2python3;python2Name of the python pkgconfig file

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

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