[Change]

修改速度取值，更新行车记录仪代码。
DEMO必须依附于预览获取YUV数据，不符合需求，这里先接入直播，后续需要按照源码抽离直接通过USB获取YUV的服务

Signed-off-by: donghongyu <donghongyu@zhidaoauto.com>

libraries/map-usbcamera/src/main/java/com/mogo/usbcamera/USBCameraHelper.java

@@ -0,0 +1,39 @@
+package com.mogo.usbcamera;
+
+import com.serenegiant.usb.USBMonitor;
+
+/**
+ * @author donghongyu
+ * USB摄像头方案，获取权限、获取YUV数据
+ */
+public class USBCameraHelper {
+    private static USBCameraHelper mCameraHelper;
+    /**
+     * USB Manager
+     */
+    private USBMonitor mUSBMonitor;
+
+    private USBCameraHelper() {
+    }
+
+    public static USBCameraHelper getInstance() {
+        if (mCameraHelper == null) {
+            mCameraHelper = new USBCameraHelper();
+        }
+        return mCameraHelper;
+    }
+
+
+
+    public void registerUSB() {
+        if (mUSBMonitor != null) {
+            mUSBMonitor.register();
+        }
+    }
+
+    public void unregisterUSB() {
+        if (mUSBMonitor != null) {
+            mUSBMonitor.unregister();
+        }
+    }
+}

libraries/map-usbcamera/src/main/java/com/mogo/usbcamera/UVCCameraHelper.java

@@ -74,6 +74,9 @@ public class UVCCameraHelper {
         void onConnectDev(UsbDevice device, boolean isConnected);
 
         void onDisConnectDev(UsbDevice device);
+
+        void onCancelDev(UsbDevice device);
+
     }
 
     public void initUSBMonitor(Activity activity, CameraViewInterface cameraView, final OnMyDevConnectListener listener) {
@@ -106,18 +109,15 @@ public class UVCCameraHelper {
             public void onConnect(final UsbDevice device, USBMonitor.UsbControlBlock ctrlBlock, boolean createNew) {
                 mCtrlBlock = ctrlBlock;
                 openCamera(ctrlBlock);
-                new Thread(new Runnable() {
-                    @Override
-                    public void run() {
-                        // wait for camera created
-                        try {
-                            Thread.sleep(500);
-                        } catch (InterruptedException e) {
-                            e.printStackTrace();
-                        }
-                        // start previewing
-                        startPreview(mCamView);
+                new Thread(() -> {
+                    // wait for camera created
+                    try {
+                        Thread.sleep(500);
+                    } catch (InterruptedException e) {
+                        e.printStackTrace();
                     }
+                    // start previewing
+                    startPreview(mCamView);
                 }).start();
                 if (listener != null) {
                     listener.onConnectDev(device, true);
@@ -135,6 +135,9 @@ public class UVCCameraHelper {
 
             @Override
             public void onCancel(UsbDevice device) {
+                if (listener != null) {
+                    listener.onCancelDev(device);
+                }
             }
         });
 
@@ -249,7 +252,6 @@ public class UVCCameraHelper {
 
     public void capturePicture(String savePath, AbstractUVCCameraHandler.OnCaptureListener listener) {
         if (mCameraHandler != null && mCameraHandler.isOpened()) {
-
             File file = new File(savePath);
             if (!Objects.requireNonNull(file.getParentFile()).exists()) {
                 file.getParentFile().mkdirs();