AndroidUSBCamera - Building AAR Files

This repository contains the source code for building AndroidUSBCamera AAR files locally.

Prerequisites

• Android SDK with NDK (version 24.0.8215888 recommended for compatibility)
• CMake 3.22.1 or newer
• Java 11 (Gradle 6.7.1 doesn't support Java 17+)

Setup

1. Create a local.properties file in the project root:

sdk.dir=/path/to/your/Android/sdk
ndk.dir=/path/to/your/Android/sdk/ndk/24.0.8215888
cmake.dir=/path/to/your/Android/sdk/cmake/3.22.1

2. Make sure gradlew is executable:

chmod +x gradlew

Build Commands

Build all AAR files:

JAVA_HOME=/path/to/java11 ./gradlew assembleRelease

Or build individual modules:

# Build libausbc AAR
JAVA_HOME=/path/to/java11 ./gradlew :libausbc:assembleRelease

# Build libuvc AAR
JAVA_HOME=/path/to/java11 ./gradlew :libuvc:assembleRelease

# Build libnative AAR
JAVA_HOME=/path/to/java11 ./gradlew :libnative:assembleRelease

Output Locations

After successful build, the AAR files will be located at:

• libausbc/build/outputs/aar/libausbc-release.aar
• libuvc/build/outputs/aar/libuvc-release.aar
• libnative/build/outputs/aar/libnative-release.aar

Required AAR Files

All three AAR files are required for complete functionality:

• libausbc: Main camera client library
• libuvc: UVC camera native implementation
• libnative: Native utilities (YUVUtils, MP3 encoding, etc.)

Notes

• The build is configured for ARM architectures only (armeabi-v7a, arm64-v8a) to avoid PIC compilation issues with x86 architectures on newer NDK versions