remote-android/redroid-doc

Overview
Getting Started
Configuration
Native Bridge Support
GMS Support
WebRTC Streaming
How To Build
Troubleshooting
Contact Me
License

Overview

redroid (Remote anDroid) is a GPU accelerated AIC (Android In Cloud) solution. You can boot many instances in Linux host (Docker, podman, k8s etc.). redroid supports both arm64 and amd64 architectures. redroid is suitable for Cloud Gaming, Virtualise Phones, Automation Test and more.

Screenshot of redroid 11

Currently supported:

Android 15 (redroid/redroid:15.0.0-latest)
Android 15 64bit only (redroid/redroid:15.0.0_64only-latest)
Android 14 (redroid/redroid:14.0.0-latest)
Android 14 64bit only (redroid/redroid:14.0.0_64only-latest)
Android 13 (redroid/redroid:13.0.0-latest)
Android 13 64bit only (redroid/redroid:13.0.0_64only-latest)
Android 12 (redroid/redroid:12.0.0-latest)
Android 12 64bit only (redroid/redroid:12.0.0_64only-latest)
Android 11 (redroid/redroid:11.0.0-latest)
Android 10 (redroid/redroid:10.0.0-latest)
Android 9 (redroid/redroid:9.0.0-latest)
Android 8.1 (redroid/redroid:8.1.0-latest)

Getting Started

redroid should be able to run on any linux distribution (with some kernel features enabled).

Quick start on Ubuntu 20.04 here; Check deploy section for other distros.

## install docker https://docs.docker.com/engine/install/#server

## install required kernel modules
apt install linux-modules-extra-`uname -r`
modprobe binder_linux devices="binder,hwbinder,vndbinder"
modprobe ashmem_linux

## running redroid
docker run -itd --rm --privileged \
    --pull always \
    -v ~/data:/data \
    -p 5555:5555 \
    redroid/redroid:12.0.0_64only-latest

### Explanation:
###   --pull always    -- use latest image
###   -v ~/data:/data  -- mount data partition
###   -p 5555:5555     -- expose adb port

### DISCLAIMER
### Should NOT expose adb port on public network
### otherwise, redroid container (even host OS) may get compromised

## install adb https://developer.android.com/studio#downloads
adb connect localhost:5555
### NOTE: change localhost to IP if running redroid remotely

## view redroid screen
## install scrcpy https://github.com/Genymobile/scrcpy/blob/master/README.md#get-the-app
scrcpy -s localhost:5555
### NOTE: change localhost to IP if running redroid remotely
###     typically running scrcpy on your local PC

Configuration

## running redroid with custom settings (custom display for example)
docker run -itd --rm --privileged \
    --pull always \
    -v ~/data:/data \
    -p 5555:5555 \
    redroid/redroid:12.0.0_64only-latest \
    androidboot.redroid_width=1080 \
    androidboot.redroid_height=1920 \
    androidboot.redroid_dpi=480 \

Param	Description	Default
`androidboot.redroid_width`	display width	720
`androidboot.redroid_height`	display height	1280
`androidboot.redroid_fps`	display FPS	30(GPU enabled) 15 (GPU not enabled)
`androidboot.redroid_dpi`	display DPI	320
`androidboot.use_memfd`	use `memfd` to replace deprecated `ashmem` plan to enable by default	false
`androidboot.use_redroid_overlayfs`	use `overlayfs` to share `data` partition `/data-base`: shared `data` partition `/data-diff`: private data	0
`androidboot.redroid_net_ndns`	number of DNS server, `8.8.8.8` will be used if no DNS server specified	0
`androidboot.redroid_net_dns<1..N>`	DNS
`androidboot.redroid_net_proxy_type`	Proxy type; choose from: `static`, `pac`, `none`, `unassigned`
`androidboot.redroid_net_proxy_host`
`androidboot.redroid_net_proxy_port`		3128
`androidboot.redroid_net_proxy_exclude_list`	comma seperated list
`androidboot.redroid_net_proxy_pac`
`androidboot.redroid_gpu_mode`	choose from: `auto`, `host`, `guest`; `guest`: use software rendering; `host`: use GPU accelerated rendering; `auto`: auto detect	`guest`
`androidboot.redroid_gpu_node`		auto-detect
`ro.xxx`	DEBUG purpose, allow override `ro.xxx` prop; For example, set `ro.secure=0`, then root adb shell provided by default

Native Bridge Support

It's possible to run arm Apps in x86 redroid instance via libhoudini, libndk_translation or QEMU translator.

Check @zhouziyang/libndk_translation for prebuilt libndk_translation. Published redroid images already got libndk_translation included.

# example structure, be careful the file owner and mode

system/
├── bin
│   ├── arm
│   └── arm64
├── etc
│   ├── binfmt_misc
│   └── init
├── lib
│   ├── arm
│   └── libnb.so
└── lib64
    ├── arm64
    └── libnb.so

# Dockerfile
FROM redroid/redroid:11.0.0-latest

ADD native-bridge.tar /

# build docker image
docker build . -t redroid:11.0.0-nb

# running
docker run -itd --rm --privileged \
    -v ~/data11-nb:/data \
    -p 5555:5555 \
    redroid:11.0.0-nb \

GMS Support

It's possible to add GMS (Google Mobile Service) support in redroid via Open GApps, MicroG or MindTheGapps.

Check android-builder-docker for details.

WebRTC Streaming

Plan to port WebRTC solutions from cuttlefish, including frontend (HTML5), backend and many virtual HALs.

How To Build

It's the same way as AOSP building process, but I suggest to use docker to build it.

Check android-builder-docker for details.

Troubleshooting

How to collect debug blobs

curl -fsSL https://raw.githubusercontent.com/remote-android/redroid-doc/master/debug.sh | sudo bash -s -- [CONTAINER]

omit CONTAINER if not exist any more
Container disappeared immediately

make sure the required kernel modules are installed; run dmesg -T for detailed logs
Container running, but adb cannot connect (device offline etc.)

run docker exec -it <container> sh, then check ps -A and logcat

try dmesg -T if cannot get a container shell

Contact Me

remote-android.slack.com (invite link: https://join.slack.com/t/remote-android/shared_invite/zt-q40byk2o-YHUgWXmNIUC1nweQj0L9gA)
ziyang.zhou@outlook.com

License

redroid itself is under Apache License, since redroid includes many 3rd party modules, you may need to examine license carefully.

redroid kernel modules are under GPL v2