luigifcruz / kimera Goto Github PK

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151.0 10.0 14.0 2.04 MB

Low-latency hardware accelerated codec based video streaming utility.

License: GNU General Public License v2.0

CMake 1.25% C 70.88% Objective-C 1.40% GLSL 0.59% Python 0.76% C++ 24.44% Objective-C++ 0.23% HTML 0.44%

raspberry-pi libav nvenc hevc opengl opengl-es

kimera's Introduction

Hello there, I’m Luigi! 👋

Website | Twitter | LinkedIn

I’m a Computer Engineer and Radio Amateur (PU2SPY). Here you can find all my Open-Source projects. I write code for SDRs, Raspberry Pi, Machine Learning, Parallel Computing, Satellites, Python, C++, and Golang. Check out my main projects:

⚡️ CyberEther: Multi-platform GPU-accelerated interface for compute-intensive pipelines.
📻 CyberRadio: An SDR-based FM/AM radio for desktop accelerated with CUDA.
🥧 PiSDR Image: The SDR Linux Distro for the Raspberry Pi.
🛰️ WeatherDump: Multi-platform toolkit for weather satellite reception.
☄️ Kimera: Low-latency hardware accelerated codec-based video streaming utility.

kimera's People

Contributors

Stargazers

Watchers

Forkers

rememberlenny longjohncoder krzemienski tzf-omkey mfkiwl 4xx azfx hamsterbiz specteresawy vehar vzreagle belmy piaktipik ajunlonglive

kimera's Issues

Cmake compile error - install TARGETS given no RUNTIME DESTINATION for executable target

Not sure how to resolve this error
Command:
cmake -DCMAKE_BUILD_TYPE=Release .. --trace
Output:
CHES Debug|RelWithDebInfo ) /home/ubuntu/.local/lib/python3.5/site-packages/pybind11/share/cmake/pybind11/pybind11Tools.cmake(205): pybind11_strip(${target_name} ) /home/ubuntu/.local/lib/python3.5/site-packages/pybind11/share/cmake/pybind11/pybind11Common.cmake(383): if(CMAKE_STRIP ) /home/ubuntu/.local/lib/python3.5/site-packages/pybind11/share/cmake/pybind11/pybind11Common.cmake(384): if(APPLE ) /home/ubuntu/.local/lib/python3.5/site-packages/pybind11/share/cmake/pybind11/pybind11Common.cmake(388): add_custom_command(TARGET ${target_name} POST_BUILD COMMAND ${CMAKE_STRIP} ${x_opt} $<TARGET_FILE:${target_name}> ) /home/ubuntu/.local/lib/python3.5/site-packages/pybind11/share/cmake/pybind11/pybind11Tools.cmake(208): if(MSVC ) /home/ubuntu/.local/lib/python3.5/site-packages/pybind11/share/cmake/pybind11/pybind11Tools.cmake(212): if(ARG_OPT_SIZE ) /home/ubuntu/kimera/python/CMakeLists.txt(16): set_target_properties(python PROPERTIES OUTPUT_NAME kimera ) /home/ubuntu/kimera/python/CMakeLists.txt(17): target_link_libraries(python PRIVATE kimera ) /home/ubuntu/kimera/CMakeLists.txt(47): add_subdirectory(apps ) /home/ubuntu/kimera/apps/CMakeLists.txt(1): add_subdirectory(tunnel ) /home/ubuntu/kimera/apps/tunnel/CMakeLists.txt(1): project(tunnel ) /home/ubuntu/kimera/apps/tunnel/CMakeLists.txt(3): file(GLOB SOURCE_LIST CONFIGURE_DEPENDS *.cc ) /home/ubuntu/kimera/apps/tunnel/CMakeLists.txt(5): add_executable(tunnel ${SOURCE_LIST} ) /home/ubuntu/kimera/apps/tunnel/CMakeLists.txt(7): set_target_properties(tunnel PROPERTIES OUTPUT_NAME kimera ) /home/ubuntu/kimera/apps/tunnel/CMakeLists.txt(9): target_link_libraries(tunnel PRIVATE kimera ) /home/ubuntu/kimera/apps/tunnel/CMakeLists.txt(11): install(TARGETS tunnel RUNTIME ) CMake Error at apps/tunnel/CMakeLists.txt:11 (install): install TARGETS given no RUNTIME DESTINATION for executable target "tunnel".

Weird gray periods on Ubuntu 20.04

linux.yaml

width: 1920
height: 1080
framerate: 30
bitrate: 5000000
packet_size: 8192

transmitter:
  source:
    - display
  sink:
    - udp
  device: :1
  address: 127.0.0.1
  port: 8080
  codec: hevc_nvenc

receiver:
  source: 
    - udp
  sink:
    - display
  address: 127.0.0.1
  port: 8080
  codec: hevc

./tunnel tx ../../../examples/linux.yml

.   CURRENT STATE
├── Dimensions: 1920x1080
├── Framerate:  30 FPS
├── Bitrate:    5000000 bps
└── Packet Len: 8192 Bytes
    .   TRANSMITTER
    ├── Source:  DISPLAY
    ├── Sink:    UDP
    ├── Device:  :1
    ├── Address: 127.0.0.1
    ├── Port:    8080
    └── Codec:   hevc_nvenc
.   [Render Meta]
├── Window Mode:   HEADLESS
├── Frame Size:    1920x1080
├── Device Size:   960x540
├── Texture Count: 2
└──.   [EGL Meta]
│  ├── APIs:       OpenGL_ES OpenGL
│  ├── Version:    1.5
│  └── Vendor:     NVIDIA
└──.   [GL Meta]
   ├── Renderer:   GeForce GTX 1650 with Max-Q Design/PCIe/SSE2
   ├── Version:    OpenGL ES 3.2 NVIDIA 440.64
   ├── Vendor:     NVIDIA Corporation
   └── GLSL Ver.:  OpenGL ES GLSL ES 3.20
[RESAMPLER] Performance Degradation:
              Output pixel format is different than the input.
                - Input: bgra -> Output: yuv420p

./tunnel rx ../../../examples/linux.yml

.   CURRENT STATE
├── Dimensions: 1920x1080
├── Framerate:  30 FPS
├── Bitrate:    5000000 bps
└── Packet Len: 8192 Bytes
    .   RECEIVER
    ├── Source:  UDP
    ├── Sink:    DISPLAY
    ├── Device:  /dev/video0
    ├── Address: 127.0.0.1
    ├── Port:    8080
    └── Codec:   hevc
.   [Render Meta]
├── Window Mode:   WINDOWED
├── Frame Size:    1920x1080
├── Device Size:   960x540
├── Texture Count: 2
└──.   [EGL Meta]
│  ├── APIs:       OpenGL_ES OpenGL
│  ├── Version:    1.5
│  └── Vendor:     NVIDIA
└──.   [GL Meta]
   ├── Renderer:   GeForce GTX 1650 with Max-Q Design/PCIe/SSE2
   ├── Version:    OpenGL ES 3.2 NVIDIA 440.64
   ├── Vendor:     NVIDIA Corporation
   └── GLSL Ver.:  OpenGL ES GLSL ES 3.20

Build error

Thanks for the great project!
I can build it on ubuntu20, but there are errors when build it on ubuntu18.

System: ubuntu18
platform:x86_64
gcc version: 9.4
g++ version:9.4
cmake version: 3.22

cmake -j with error:

[ 96%] Building CXX object apps/tunnel/CMakeFiles/tunnel.dir/tunnel.cc.o
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/home/neo/works/kimera-source/kimera/python/client.hpp: In function ‘void init_client(pybind11::module&)’:
/home/neo/works/kimera-source/kimera/python/client.hpp:12:10: error: no matching function for call to ‘init(init_client(pybind11::module&)::<lambda(Kimera::State&)>)’
   12 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/home/neo/works/kimera-source/kimera/python/client.hpp:12:10: note:   candidate expects 0 arguments, 1 provided
   12 |         }))
      |          ^
/home/neo/works/kimera-source/kimera/python/client.hpp:16:10: error: no matching function for call to ‘init(init_client(pybind11::module&)::<lambda()>)’
   16 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/home/neo/works/kimera-source/kimera/python/client.hpp:16:10: note:   candidate expects 0 arguments, 1 provided
   16 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:2:
/home/neo/works/kimera-source/kimera/python/codec.hpp: In function ‘void init_codec(pybind11::module&)’:
/home/neo/works/kimera-source/kimera/python/codec.hpp:12:10: error: no matching function for call to ‘init(init_codec(pybind11::module&)::<lambda(Kimera::State&)>)’
   12 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:2:
/home/neo/works/kimera-source/kimera/python/codec.hpp:12:10: note:   candidate expects 0 arguments, 1 provided
   12 |         }))
      |          ^
/home/neo/works/kimera-source/kimera/python/codec.hpp:19:10: error: no matching function for call to ‘init(init_codec(pybind11::module&)::<lambda(Kimera::State&)>)’
   19 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:2:
/home/neo/works/kimera-source/kimera/python/codec.hpp:19:10: note:   candidate expects 0 arguments, 1 provided
   19 |         }))
      |          ^
/home/neo/works/kimera-source/kimera/python/codec.hpp:26:10: error: no matching function for call to ‘init(init_codec(pybind11::module&)::<lambda(Kimera::State&)>)’
   26 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:2:
/home/neo/works/kimera-source/kimera/python/codec.hpp:26:10: note:   candidate expects 0 arguments, 1 provided
   26 |         }))
      |          ^
/home/neo/works/kimera-source/kimera/python/codec.hpp:29:10: error: no matching function for call to ‘init(init_codec(pybind11::module&)::<lambda(Kimera::State&, Kimera::PixelFormat)>)’
   29 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:2:
/home/neo/works/kimera-source/kimera/python/codec.hpp:29:10: note:   candidate expects 0 arguments, 1 provided
   29 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:3:
/home/neo/works/kimera-source/kimera/python/loopback.hpp: In function ‘void init_loopback(pybind11::module&)’:
/home/neo/works/kimera-source/kimera/python/loopback.hpp:12:10: error: no matching function for call to ‘init(init_loopback(pybind11::module&)::<lambda(Kimera::State&)>)’
   12 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:3:
/home/neo/works/kimera-source/kimera/python/loopback.hpp:12:10: note:   candidate expects 0 arguments, 1 provided
   12 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:5:
/home/neo/works/kimera-source/kimera/python/transport.hpp: In function ‘void init_transport(pybind11::module&)’:
/home/neo/works/kimera-source/kimera/python/transport.hpp:12:10: error: no matching function for call to ‘init(init_transport(pybind11::module&)::<lambda(Kimera::State&)>)’
   12 |         }))
      |          ^
In file included from /home/neo/works/kimera-source/kimera/python/client.hpp:3,
                 from /home/neo/works/kimera-source/kimera/python/index.cc:1:
/usr/include/pybind11/pybind11.h:1418:51: note: candidate: ‘template<class ... Args> pybind11::detail::init<Args ...> pybind11::init()’
 1418 | template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
      |                                                   ^~~~
/usr/include/pybind11/pybind11.h:1418:51: note:   template argument deduction/substitution failed:
In file included from /home/neo/works/kimera-source/kimera/python/index.cc:5:
/home/neo/works/kimera-source/kimera/python/transport.hpp:12:10: note:   candidate expects 0 arguments, 1 provided
   12 |         }))
      |          ^
/home/neo/works/kimera-source/kimera/python/index.cc: At global scope:
/home/neo/works/kimera-source/kimera/python/index.cc:14:16: error: expected constructor, destructor, or type conversion before ‘(’ token
   14 | PYBIND11_MODULE(kimera, m) {
      |                ^
[ 98%] Linking CXX executable ../../bin/kimera
CMakeFiles/tunnel.dir/tunnel.cc.o: In function `boost::system::error_category::std_category::equivalent(std::error_code const&, int) const':
tunnel.cc:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0x40): undefined reference to `boost::system::generic_category()'
tunnel.cc:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0xb9): undefined reference to `boost::system::generic_category()'
tunnel.cc:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0x149): undefined reference to `boost::system::generic_category()'
CMakeFiles/tunnel.dir/tunnel.cc.o: In function `boost::system::error_category::std_category::equivalent(int, std::error_condition const&) const':
tunnel.cc:(.text._ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition[_ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition]+0x3f): undefined reference to `boost::system::generic_category()'
tunnel.cc:(.text._ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition[_ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition]+0xd1): undefined reference to `boost::system::generic_category()'
CMakeFiles/tunnel.dir/tunnel.cc.o:tunnel.cc:(.text.startup+0x1f6): more undefined references to `boost::system::generic_category()' follow
CMakeFiles/tunnel.dir/tunnel.cc.o: In function `_GLOBAL__sub_I__Z8receiverRN6Kimera5StateERNS_6ClientE':
tunnel.cc:(.text.startup+0x200): undefined reference to `boost::system::system_category()'
tunnel.cc:(.text.startup+0x205): undefined reference to `boost::system::system_category()'
collect2: error: ld returned 1 exit status
apps/tunnel/CMakeFiles/tunnel.dir/build.make:98: recipe for target 'bin/kimera' failed
make[2]: *** [bin/kimera] Error 1
CMakeFiles/Makefile2:1121: recipe for target 'apps/tunnel/CMakeFiles/tunnel.dir/all' failed
make[1]: *** [apps/tunnel/CMakeFiles/tunnel.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
python/CMakeFiles/python.dir/build.make:75: recipe for target 'python/CMakeFiles/python.dir/index.cc.o' failed
make[2]: *** [python/CMakeFiles/python.dir/index.cc.o] Error 1
CMakeFiles/Makefile2:1094: recipe for target 'python/CMakeFiles/python.dir/all' failed
make[1]: *** [python/CMakeFiles/python.dir/all] Error 2
Makefile:135: recipe for target 'all' failed
make: *** [all] Error 2

Can't Parse file

virtual-machine:/kimera$ kimera tx ../examples/linux.yml
[CLIENT] Can't parse file: bad file: ../examples/linux.yml
virtual-machine:/kimera$

Issues compiling on RaspberryPi OS

[~/kimera/build]$ make -j                                                                                                                                                                                                            [master] 
[  8%] Building C object CMakeFiles/kimera.dir/src/render/stages/draw.c.o
[  8%] Building C object CMakeFiles/kimera.dir/src/render/stages/pull.c.o
[ 12%] Building C object CMakeFiles/kimera.dir/src/render/stages/utils.c.o
[ 16%] Building C object CMakeFiles/kimera.dir/src/render/stages/process.c.o
[ 20%] Building C object CMakeFiles/kimera.dir/src/render/stages/push.c.o
In file included from /home/patricio/kimera/src/render/stages/pull.c:1:
/home/patricio/kimera/include/kimera/render.h:48:10: fatal error: shaders.h: No such file or directory
 #include "shaders.h"
          ^~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/kimera.dir/build.make:232: CMakeFiles/kimera.dir/src/render/stages/pull.c.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /home/patricio/kimera/src/render/stages/utils.c:1:
/home/patricio/kimera/include/kimera/render.h:48:10: fatal error: shaders.h: No such file or directory
 #include "shaders.h"
          ^~~~~~~~~~~
compilation terminated.
In file included from /home/patricio/kimera/src/render/stages/process.c:1:
/home/patricio/kimera/include/kimera/render.h:48:10: fatal error: shaders.h: No such file or directory
 #include "shaders.h"
          ^~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/kimera.dir/build.make:258: CMakeFiles/kimera.dir/src/render/stages/utils.c.o] Error 1
make[2]: *** [CMakeFiles/kimera.dir/build.make:219: CMakeFiles/kimera.dir/src/render/stages/process.c.o] Error 1
In file included from /home/patricio/kimera/src/render/stages/draw.c:1:
/home/patricio/kimera/include/kimera/render.h:48:10: fatal error: shaders.h: No such file or directory
 #include "shaders.h"
          ^~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/kimera.dir/build.make:206: CMakeFiles/kimera.dir/src/render/stages/draw.c.o] Error 1
In file included from /home/patricio/kimera/src/render/stages/push.c:1:
/home/patricio/kimera/include/kimera/render.h:48:10: fatal error: shaders.h: No such file or directory
 #include "shaders.h"
          ^~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/kimera.dir/build.make:245: CMakeFiles/kimera.dir/src/render/stages/push.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/kimera.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

Convert library to C++ and add Python bindings

When I began writing this library in C I didn't realize how big it would turn out to be. This is why I'm proposing to convert it to C++. It will improve the code organization, automate class initialization, and ultimately reduce the amount of boilerplate code. The refactor will follow modern C++ standards and only apply C++ functions when performance isn't a priority. The refactor to C++ will also enable the library to have Python 3 bindings. Since C++ is a superset of C I don't expect usability problems for the small current userbase.

Outdated documentation

Seams you have some outdated documentation:

There is no kimera app
$ ./kimera tx ../examples/linux.yml
The scrip use some python glue which require pathlib module which is not installed by default in RaspberryPi. The following is needed:

sudo apt install python-pip python3-pip
sudo pip install pathlib
sudo pip3 install pathlib

Compilation Errors on Linux 4.9.140-tegra

I'm compiling for Jetson Nano and when following the instructions you've provided, I get the following:

cmake -DCMAKE_BUILD_TYPE=Release ..
CMake Error: The source directory "/home/<user>" does not appear to contain CMakeLists.txt.
Specify --help for usage, or press the help button on the CMake GUI.

so I run cmake -DCMAKE_BUILD_TYPE=Release . and get:

-- Assuming Linux system...
CMake Error at apps/CMakeLists.txt:4 (add_subdirectory):
  The source directory

    /home/<user>/kimera/apps/CMakeFiles

  does not contain a CMakeLists.txt file.


-- Configuring incomplete, errors occurred!
See also "/home/<user>/kimera/CMakeFiles/CMakeOutput.log".

Changing into the build directory and running cmake -DCMAKE_BUILD_TYPE=Release .. results in the same output as above.

Error linking on Ubuntu 20.04

I'm getting the following linking error:

[ 89%] Built target kimera
[ 94%] Linking C executable tunnel
/usr/bin/ld: CMakeFiles/tunnel.dir/tunnel.c.o: in function `receiver':
tunnel.c:(.text+0xe8): undefined reference to `free_loopback'
/usr/bin/ld: CMakeFiles/tunnel.dir/tunnel.c.o: in function `transmitter':
tunnel.c:(.text+0x2d1): undefined reference to `free_loopback'
collect2: error: ld returned 1 exit status
make[2]: *** [apps/tunnel/CMakeFiles/tunnel.dir/build.make:85: apps/tunnel/tunnel] Error 1
make[1]: *** [CMakeFiles/Makefile2:160: apps/tunnel/CMakeFiles/tunnel.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

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Microsoft

Open source projects and samples from Microsoft.
Google

Google ❤️ Open Source for everyone.
Alibaba

Alibaba Open Source for everyone
D3

Data-Driven Documents codes.
Tencent

China tencent open source team.