I am trying to send information data and video feedback from a 5.8 GHZ receiver to my android phone. I research for sometime now. I come up with multiple ideas but i need some advice.
First concept, video is going to come as analog from the wireless link. Then board converts into digital. At the end board collects input data(joystick data), both information data and video signal from wireless link then it to puts everything into USB and then send it to Android phone.
Second concept is similar to first concept with one addition. RCA to USB device is used to convert analog video to digital video.
Third concept, video comes as digital from the wireless link then board puts everything into USB.
Fourth concept, using a FPGA to do the work. Custom drivers and controllers for analog to digital video.
Fifth idea, just give up, this project is impossible, not worth it :). Try something else, go buy off the shelf product.(not exist as an opensource i believe or too expensive, like DJI's bridge link).
I am thinking to use a board that supports USB full-speed or high-speed with DMA controller. (Such as Teensy 3.6, Arduino zero or even something like hifive1)
Last but not least I am going to put the system diagram.
Note: If someone gives me supportive answer and show me a path, i will work hard and make this happen and share it on github.