gehee / fpvue_rk

Application that decodes an RTP Video Stream and displays it on screen, for Rockchip devices.

FPVue_rk

Important

August 2024: Unfortunately, this repository is now in an unmaintained state. I don't have the time to maitain it like I would like to and there was not enough interest from external developers to contribute to it. Feel free to fork it and take over but for now it will stay as is.

WFB-ng client (Video Decoder) for Rockchip platform powered by the Rockchip MPP library. It also displays a simple cairo based OSD that shows the bandwidth, decoding latency, and framerate of the decoded video, and wfb-ng link statistics.

Tested on RK3566 (Radxa Zero 3W) and RK3588s (Orange Pi 5).

Compilation

Build on the Rockchip linux system directly.

Install dependencies

• rockchip_mpp

git clone https://github.com/rockchip-linux/mpp.git
cmake -B build
sudo cmake --build build --target install

• drm, cairo

sudo apt install libdrm-dev libcairo-dev

• gstreamer

sudo apt install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev

Build Instructions

Build and run application in production environment:

cmake -B build
sudo cmake --build build --target install
build/fpvue

Build and run application for debugging purposes:

cmake -B build -DCMAKE_BUILD_TYPE=Debug
cmake --build build
build/fpvue --osd

Usage

Show command line options:

fpvue --help

Known issues

1. Video is cropped when the fpv feed resolution is bigger than the screen mode.
2. Crashes when video feed resolution is higher than the screen resolution.

fpvue_rk's Issues

Dead code in DRM SETUP block

As I understand this code actually does nothing https://github.com/gehee/FPVue_rk/blob/main/main.c#L526

1. output_list is a malloc-ed structure
2. output_list->video_request is set using return value in drmModeAtomicAlloc()
3. but then in modeset_prepare every byte in structure is overwritten by *output_list = *out; https://github.com/gehee/FPVue_rk/blob/main/drm.c#L522