README.md

AVC Android Camera Video Analytics SDK

This repository contains native C/C++ VA SDK, Java helper library, and a Motion-Track example module. With this SDK, you can build your own VA modules for AndroVideo camera devices.

Native C/C++ VA SDK

The AVC native C/C++ VA SDK contains code that facilitate building video analytics modules for AndroVideo camera devices.

• Native VA SDK Template (An Empty template for a video analytics module)
• Native VA MotionTrack Sample (An example with motion-track video analytics sample code)
• Native VA Tensorflow Object Detection Sample (An example with Google tensorflow model ssd_mobilenet_v1_coco)

Getting Started

• Download the Android NDK package (Recommend to download the latest stable version - r16b)
• Download the Native VA MotionTrack Sample
• Setup PATH env

$ export PATH=$PATH:YOUR_NDK_PATH

• Go into the working directory and Run ndk-build command

$ ndk-build
#You will find libva_motion_sample.so in libs/armeabi-v7a

Install your VA module

• Connect camera device via adb

$ adb connect 192.168.0.10
$ adb devices
List of devices attached
192.168.0.10:5555    device

• Remount system before installing the VA module

$ adb remount

• Push VA module to device

$ adb push libs/armeabi-v7a/libva_motion_sample.so /vendor/lib/libva_motion_sample.so

• Update new VA config file

$ adb push va_config.txt /data/misc/media/va_config.txt

# Set va config path once
$ adb shell setprop persist.va.config /data/misc/media/va_config.txt

# Reboot device to enable new setting
$ adb reboot

• After rebooting, you can see your VA lib is loaded via logcat log

$ adb logcat
D/VABroker(  425 ): int32_t qipcam::VABroker::init(): VAEngines[2].libName = /vendor/lib/libva_motion_sample.so
D/VABroker(  425 ): int32_t qipcam::VABroker::init(): module_api_version = 0x1001

Build Android App with Java VA helper library

The AVC Java help library helps you to build Android applications that can enable/disable your own VA modules and receive your own VA events for further processing.

• Java Helper Lib
• Android Sample App

Getting Started

• Prepare an Android App development environment (https://developer.android.com)
• Download the Android Sample App
• Build and install the App to device
• You can see your VA module is enable via logcat log

$ adb logcat
I/AVCLog.IpcamBroadcastRecv( 2418 ): onReceive com.androvideo.va.action.USER_CONFIG
D/AVCIPCam( 2418 ): int32_t qipcam::AVCIPCamService::enableVA(android::String8, int): Enter MotionSample 1
I/va_motion_sample(  423 ): int32_t motiontrack_init(void**):
I/va_motion_sample(  423 ): int32_t motiontrack_get_supported_events(void*, int32_t*, int32_t*):

FAQ