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AUSBC3.0,震撼来袭!(UVC Camera, 支持开启多路摄像头)
注:3.0以下版本不再维护,有任何问题请在上述页面或掘金留言
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AndroidUSBCamera基于[saki4510t/UVCCamera](https://github.com/saki4510t/UVCCamera)开发,该项目对USB Camera(UVC设备)的使用和视频数据采集进行了高度封装,能够帮助开发者通过几个简单的API实现USB Camera设备的检测、连接、预览和音视频数据采集,最重要的是手机无需root,只需支持otg功能即可驱动。主要功能包括:
(1)支持USB Camera设备检测,画面实时预览;
(2)支持本地录制mp4格式视频,支持实时获取音视频数据流;
(3)支持jpg格式图片抓拍;
(4)支持获取camera支持的分辨率,和分辨率切换;
(5)支持屏蔽声音,重启Camera;
(6)支持相机自动对焦;
(7)支持调整对比度和亮度
(8) 支持480P、720P、1080P and higher
(9) 支持Android5.0,6.0,7.0,8.0,9.0
如何使用AndroidUSBCamera项目
1. 添加依赖到本地工程
第一步 添加JitPack仓库到工程gradle
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' }
}
}
第二步 添加依赖到app Module的gradle
Step 2. Add the dependency
dependencies {
compile 'com.github.jiangdongguo:AndroidUSBCamera:1.3.8'
}
注:最新版为2,3,0
2. 初始化引擎,注册USB设备事件监听器
Init AndroidUSBCamera engine,register the USB device event listener
private USBCameraManager.OnMyDevConnectListener listener = new USBCameraManager.OnMyDevConnectListener() {
// 插入USB设备
@Override
public void onAttachDev(UsbDevice device) {
if(mUSBManager == null || mUSBManager.getUsbDeviceCount() == 0){
showShortMsg("未检测到USB摄像头设备");
return;
}
// 请求打开摄像头
if(! isRequest){
isRequest = true;
if(mUSBManager != null){
mUSBManager.requestPermission(0);
}
}
}
// 拔出USB设备
@Override
public void onDettachDev(UsbDevice device) {
if(isRequest){
// 关闭摄像头
isRequest = false;
mUSBManager.closeCamera();
showShortMsg(device.getDeviceName()+"已拨出");
}
}
// 连接USB设备成功
@Override
public void onConnectDev(UsbDevice device,boolean isConnected) {
if(! isConnected) {
showShortMsg("连接失败,请检查分辨率参数是否正确");
isPreview = false;
}else{
isPreview = true;
}
}
// 与USB设备断开连接
@Override
public void onDisConnectDev(UsbDevice device) {
showShortMsg("连接失败");
}
};
mUVCCameraView = (CameraViewInterface) mTextureView;
mUVCCameraView.setCallback(new CameraViewInterface.Callback() {
@Override
public void onSurfaceCreated(CameraViewInterface view, Surface surface) {
if(!isPreview && mUSBManager.isCameraOpened()) {
mUSBManager.startPreview(mUVCCameraView, new AbstractUVCCameraHandler.OnPreViewResultListener() {
@Override
public void onPreviewResult(boolean result) {
}
});
isPreview = true;
}
}
@Override
public void onSurfaceChanged(CameraViewInterface view, Surface surface, int width, int height) {
}
@Override
public void onSurfaceDestroy(CameraViewInterface view, Surface surface) {
if(isPreview && mUSBManager.isCameraOpened()) {
mUSBManager.stopPreview();
isPreview = false;
}
}
});
// 初始化引擎
mUSBManager = USBCameraManager.getInstance();
mUSBManager.initUSBMonitor(this,listener);
mUSBManager.createUVCCamera(mUVCCameraView);
3. 注册USB设备广播事件监听器,开始Camera预览
Register the USB device broadcast event listener and start the Camera Preview
// 注册USB事件广播监听器
if(mUSBManager != null){
mUSBManager.registerUSB();
}
// 恢复Camera预览
if(mUVCCameraView != null){
mUVCCameraView.onResume();
}
4. 注销USB设备广播事件监听器,停止Camera预览
Unregister the USB device broadcast event listener and stop the Camera Preview
// 注销USB事件广播监听器
if(mUSBManager != null){
mUSBManager.unregisterUSB();
}
// 暂停Camera预览
if(mUVCCameraView != null){
mUVCCameraView.onPause();
}
5. 图片抓拍
Picture capturing
if(mUSBManager == null || ! mUSBManager.isCameraOpened()){
showShortMsg("抓拍异常,摄像头未开启");
return;
}
mUSBManager.capturePicture(picPath, new AbstractUVCCameraHandler.OnCaptureListener() {
@Override
public void onCaptureResult(String path) {
showShortMsg("保存路径:"+path);
}
});
6. 本地录制(可实时获取音视频数据流)
recoring mp4,and get media real-stream
if(mUSBManager == null || ! mUSBManager.isCameraOpened()){
showShortMsg("录制异常,摄像头未开启");
return;
}
if(! mUSBManager.isRecording()){
String videoPath = USBCameraManager.ROOT_PATH+System.currentTimeMillis();
FileUtils.createfile(FileUtils.ROOT_PATH+"test666.h264");
RecordParams params = new RecordParams();
params.setRecordPath(videoPath);
params.setRecordDuration(0); // 设置为0,不分割保存
params.setVoiceClose(false); // 不屏蔽声音
mUSBManager.startRecording(params, new AbstractUVCCameraHandler.OnEncodeResultListener() {
@Override
public void onEncodeResult(byte[] data, int offset, int length, long timestamp, int type) {
// type = 0,aac格式音频流
// type = 1,h264格式视频流
if(type == 1){
FileUtils.putFileStream(data,offset,length);
}
}
@Override
public void onRecordResult(String videoPath) {
showShortMsg(videoPath);
}
});
// 停止录制
mUSBManager.stopRecording();
7. 切换分辨率
update Resulotion
mUSBManager.updateResolution(this, mUVCCameraView, 320, 240, new USBCameraManager.OnPreviewListener() {
@Override
public void onPreviewResult(boolean isSuccess) {
if(! isSuccess) {
showShortMsg("预览失败,不支持该分辨率");
}else {
showShortMsg("以切换到分辨率为320x240");
}
}
});
// 获取Camera支持得分辨率
List<Size> list = mUSBManager.getSupportedPreviewSizes();
// Camera自动对焦
mUSBManager.startCameraFoucs();
8. 释放引擎资源
release resource
// 释放资源
if(mUSBManager != null){
mUSBManager.release();
}
9. 添加权限
add permissions
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
USBCameraManager API (Other)
(1) void requestPermission(int index):请求授予开启USB摄像头权限;
(2) int getUsbDeviceCount():返回查询到的可用USB Camera数目;
(3) boolean isRecording():判断是否正在录制视频;
(4) boolean isCameraOpened():判断USB摄像头是否正常打开;
(5) void release():释放资源
(6) USBMonitor getUSBMonitor():返回USBMonitor实例;
(7) mUSBManager.setModelValue(USBCameraManager.MODE_CONTRAST,contrast++); 调整对比度
(8) mUSBManager.setModelValue(USBCameraManager.MODE_BRIGHTNESS,brightness++);调整亮度
注:在使用Android Studio移植UVCCamera时,很多朋友可能会遇到”open(“/dev/bus/usb/001/002”, O_RDWR, 0),报错,Permission denied”问题,这是由于Android Studio使用的ndk版本所致,建议使用ndk-r14即可。解决方法:local.properties–>指定ndk.dir版本。(注:这里使用的是离线方式)
最新版为2.3.0,更新时间为2019年6月17日,使用方法请移步Github项目
GitHub源码地址:https://github.com/jiangdongguo/AndroidUSBCamera(如果对您有用,欢迎star&fork以表支持~谢谢^_^!)
Download APK
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 {
javaSourceCompatibility = JavaVersion.VERSION_1_8
javaTargetCompatibility = JavaVersion.VERSION_1_8
compileSdkVersion = 28
buildToolsVersion = '28.0.3'
minSdkVersion = 21
targetSdkVersion = 28
commonLibVersion= '2.12.4'
}
下载APP: 安装密码 12345678
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