This code drives an ambilight setup for the back of a television set. It is designed to run on a Raspberry Pi which receives an input video signal and is connected to an LED strip via SPI.
There are three test programs to be used to test the individual components of
the project. test_led will write a solid color to the LED strip. test_video
will decode and output the video signal received to a temporary window. test_ambilight
will perform video decoding and frame analysis, outputting the video signal to
one window and in another window will display a visual representation of the
calculated LED colors.
Download and build OpenCV 3.1.0 on your Raspberry Pi. Warning: this is a lengthy step.
Verify your setup with the code. You may need to change the macro LED_COUNT
in ambilight/main.cpp and test_led/main.cpp to the number of LEDs in your rig.
To build the project, run make rel from the top level. This will build the
release version of the code. To build debug, simply run make.
Copy service/ambilight to /etc/init.d/. Then, set the service to run at
startup using the following command:
sudo update-rc.d ambilight defaults
If you ever want to remove the ambilight service from startup, run:
sudo update-rc.d -f ambilight remove