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 Android 5.0,6.0,7.0,8.0,9.0
中文文档: AndroidUSBCamera,UVCCamera开发通用库
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 'https://raw.github.com/saki4510t/libcommon/master/repository/' }
maven { url 'https://jitpack.io' }
}
}
Step 2. Add the dependency
dependencies {
implementation 'com.github.jiangdongguo:AndroidUSBCamera:2.3.0'
}
(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) {
}
};
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
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
OkCamera Android Camera univsersally operation.
AndroidRecordMp4 Using MediaCodec realize record mp4.
AndroidYuvOsd YUV data operation.
Lame4Mp3 pcm to mp3 and pcm to aac.
Copyright 2018 Jiangdongguo
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you may not use this file except in compliance with the License.
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