AndroidUSBCamera is developed based on the saki4510t/UVCCamera, the project of USB Camera (UVC equipment) and the use of video data acquisition are highly packaged, and it can help developers using USB Camera devices easily by a few simple APIs. By using AndroidUSBCamera,you can detect and connect to a USB Camera simply.And you also can use it to realize taking picture,recording mp4,switching resolutions ,getting h.264/aac/yuv(nv21) stream and setting camera's contrast or brightness,supporting 480P、720P、1080P and higher,etc.supporting overlay and record device's mic.
Supporting Android 5.0,6.0,7.0,8.0,9.0,10.0
中文文档： AndroidUSBCamera，UVCCamera开发通用库
- JNI Source Download:
Step 1. Add the JitPack repository to your build file.Add it in your root build.gradle at the end of repositories:
allprojects {
repositories {
...
maven { url 'http://raw.github.com/saki4510t/libcommon/master/repository/' }
maven { url 'https://jitpack.io' }
}
}Step 2. Add the dependency
dependencies {
implementation 'com.github.jiangdongguo:AndroidUSBCamera:2.3.6'
}(1) In order to using it correctly,the following four steps must be achieved：
mUVCCameraView = (CameraViewInterface) mTextureView;
mUVCCameraView.setCallback(mCallback);
mCameraHelper = UVCCameraHelper.getInstance();
// set default preview size
mCameraHelper.setDefaultPreviewSize(1280,720);
// set default frame format，defalut is UVCCameraHelper.Frame_FORMAT_MPEG
// if using mpeg can not record mp4,please try yuv
// mCameraHelper.setDefaultFrameFormat(UVCCameraHelper.FRAME_FORMAT_YUYV);
mCameraHelper.initUSBMonitor(this, mUVCCameraView, mDevConnectListener); To be attention,mCallback is a object of interface CameraViewInterface.Callback,and it's used to be listenering surfaceView created or detoryed.mDevConnectListener is a object of interface UVCCameraHelper.OnMyDevConnectListener,and it's used to be listenering to detect and conntect USB device.Here is the coding order:
private CameraViewInterface.Callback mCallback = new CameraViewInterface.Callback mCallback(){
@Override
public void onSurfaceCreated(CameraViewInterface view, Surface surface) {
// must have
if (!isPreview && mCameraHelper.isCameraOpened()) {
mCameraHelper.startPreview(mUVCCameraView);
isPreview = true;
}
}
@Override
public void onSurfaceChanged(CameraViewInterface view, Surface surface, int width, int height) {
}
@Override
public void onSurfaceDestroy(CameraViewInterface view, Surface surface) {
// must have
if (isPreview && mCameraHelper.isCameraOpened()) {
mCameraHelper.stopPreview();
isPreview = false;
}
}
}
private UVCCameraHelper.OnMyDevConnectListener listener = new UVCCameraHelper.OnMyDevConnectListener() {
@Override
public void onAttachDev(UsbDevice device) {
// request open permission(must have)
if (!isRequest) {
isRequest = true;
if (mCameraHelper != null) {
mCameraHelper.requestPermission(0);
}
}
}
@Override
public void onDettachDev(UsbDevice device) {
// close camera(must have)
if (isRequest) {
isRequest = false;
mCameraHelper.closeCamera();
}
}
@Override
public void onConnectDev(UsbDevice device, boolean isConnected) {
}
@Override
public void onDisConnectDev(UsbDevice device) {
}
};
(2) Capturing JPG Images
mCameraHelper.capturePicture(picPath, new AbstractUVCCameraHandler.OnCaptureListener() {
@Override
public void onCaptureResult(String path) {
Log.i(TAG,"save path：" + path);
}
}); (3) Recording Mp4,supporting close voice and save file automatic.
RecordParams params = new RecordParams();
params.setRecordPath(videoPath);
params.setRecordDuration(0); // 0,do not cut save
params.setVoiceClose(mSwitchVoice.isChecked()); // is close voice
params.setSupportOverlay(true); // overlay only support armeabi-v7a & arm64-v8a
mCameraHelper.startPusher(params, new AbstractUVCCameraHandler.OnEncodeResultListener() {
@Override
public void onEncodeResult(byte[] data, int offset, int length, long timestamp, int type) {
// type = 1,h264 video stream
if (type == 1) {
// FileUtils.putFileStream(data, offset, length);
}
// type = 0,aac audio stream
if(type == 0) {
}
}
@Override
public void onRecordResult(String videoPath) {
Log.i(TAG,"videoPath = "+videoPath);
}
});
// of course,if you only want to getting h.264 and aac stream
// you can do like this
mCameraHelper.startPusher(listener);(4) setting camera's brightness and contrast.
mCameraHelper.setModelValue(UVCCameraHelper.MODE_BRIGHTNESS,progress);
mCameraHelper.setModelValue(UVCCameraHelper.MODE_CONTRAST,progress);
mCameraHelper.getModelValue(UVCCameraHelper.MODE_BRIGHTNESS);
mCameraHelper.getModelValue(UVCCameraHelper.MODE_CONTRAST);
...
(5) switch resolutions and camera.
mCameraHelper.updateResolution(widht, height);
At last,remember adding permissions:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" /> - connected,but preview failed
Please checking your preview format and change YUV to MJPEG or MJPEG to YUV,because some usb devices only supporting YUV
- never found the device
-
confirm your phone support otg
-
get a file from your sd card named failed-device.txt in the path of root sd card/UsbCamera/failed-device.txt and tell me
-
if your device is Android 10(Q),please change your versionTarget to 27 and below, because these is a bug in Android Q SDK.
- support adding time overlay(attention: overlay only support armeabi-v7a & arm64-v8a);
- support recording device mic;
- update to androidx and update commonLibVersion from 2.14.2 to 4.1.1;
- fix saving files failed.
- fix pull version 2.3.2 failed.
- fix android 9.0 sometimes can not preview. 3.fix pull out crash 1.
- update to all so files to new.
- fix stop preview crash.
- open UVCCamera NDK Library project----UVCCameraLib
- fix pull out crash 2.
In order to display the functions, I develop a simple released apk,which is based on version 2.3.1,and the build version is 28.0.3.Here is my configs and if you have any questions please issues to me ,I will follow it do my best.
ext {
androidXVersion = '1.1.0' // variable that can be referenced to keep support libs consistent
commonLibVersion= '4.1.1'
versionCompiler = 28
versionTarget = 27 // versionTarget>27 android 10 may previewed failed.
// if hope supporting 4.4
// please modify it to 16
minSdkVersion = 21
versionNameString = '1.2.1.20200414'
javaSourceCompatibility = JavaVersion.VERSION_1_8
javaTargetCompatibility = JavaVersion.VERSION_1_8
}
download way:
displaying:
OkCamera Android Camera univsersally operation.
AndroidRecordMp4 Using MediaCodec realize record mp4.
AndroidYuvOsd YUV data operation.
Lame4Mp3 pcm to mp3 and pcm to aac.
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