diff --git a/app/src/main/java/com/jiangdg/usbcamera/view/USBCameraActivity.java b/app/src/main/java/com/jiangdg/usbcamera/view/USBCameraActivity.java
index 9ea4ceb..af66e9c 100644
--- a/app/src/main/java/com/jiangdg/usbcamera/view/USBCameraActivity.java
+++ b/app/src/main/java/com/jiangdg/usbcamera/view/USBCameraActivity.java
@@ -6,6 +6,7 @@ import android.os.Environment;
 import android.os.Handler;
 import android.os.Message;
 import android.support.annotation.Nullable;
+import android.support.v4.view.ViewPager;
 import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.View;
@@ -27,6 +28,7 @@ import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.List;
 
 import butterknife.BindView;
@@ -42,8 +44,6 @@ import butterknife.OnClick;
 public class USBCameraActivity extends AppCompatActivity implements CameraDialog.CameraDialogParent{
     @BindView(R.id.camera_view)
     public View mTextureView;
-    @BindView(R.id.camera_view2)
-    public View mTextureView2;
     @BindView(R.id.btn_capture_pic)
     public Button mBtnCapture;
     @BindView(R.id.btn_rec_video)
@@ -52,8 +52,13 @@ public class USBCameraActivity extends AppCompatActivity implements CameraDialog
     public Button mBtnUpdateResultion;
     @BindView(R.id.btn_restart_camera)
     Button mBtnRestartCamera;
+    @BindView(R.id.btn_contrast)
+    Button mBtnContrast;
+    @BindView(R.id.btn_brightness)
+    Button mBtnBrightness;
 
     private USBCameraManager mUSBManager;
+
     private CameraViewInterface mUVCCameraView;
 
     private boolean isRequest;
@@ -116,6 +121,7 @@ public class USBCameraActivity extends AppCompatActivity implements CameraDialog
         mUSBManager.createUVCCamera(mUVCCameraView);
     }
 
+
     @Override
     protected void onStart() {
         super.onStart();
@@ -134,26 +140,31 @@ public class USBCameraActivity extends AppCompatActivity implements CameraDialog
         }
     }
 
-    @OnClick({R.id.camera_view, R.id.btn_capture_pic, R.id.btn_rec_video,R.id.btn_update_resolution,R.id.btn_restart_camera})
+    @OnClick({ R.id.btn_contrast,R.id.btn_brightness,R.id.btn_capture_pic, R.id.btn_rec_video,R.id.btn_update_resolution,R.id.btn_restart_camera})
     public void onViewClick(View view) {
         int vId = view.getId();
         switch (vId) {
+            // 对比度
+            case R.id.btn_contrast:
+                if(mUSBManager == null || !mUSBManager.isCameraOpened())
+                    return;
+                int contrast = mUSBManager.getModelValue(USBCameraManager.MODE_CONTRAST);
+                mUSBManager.setModelValue(USBCameraManager.MODE_CONTRAST,contrast++);
+                break;
+            // 亮度
+            case R.id.btn_brightness:
+                if(mUSBManager == null || !mUSBManager.isCameraOpened())
+                    return;
+                int brightness = mUSBManager.getModelValue(USBCameraManager.MODE_BRIGHTNESS);
+                mUSBManager.setModelValue(USBCameraManager.MODE_BRIGHTNESS,brightness++);
+                break;
             // 重启Camera
             case R.id.btn_restart_camera:
-                if(mUSBManager == null)
-                    return;
-                mUSBManager.restartUSBCamera((CameraViewInterface) mTextureView2,new USBCameraManager.OnPreviewListener() {
-                    @Override
-                    public void onPreviewResult(boolean isSuccess) {
-                        if(isSuccess) {
-                            showShortMsg("重启成功");
-                        }
-                    }
-                });
+
                 break;
             // 切换分辨率
             case R.id.btn_update_resolution:
-                if(mUSBManager == null)
+                if(mUSBManager == null || !mUSBManager.isCameraOpened())
                     return;
                 mUSBManager.updateResolution(320, 240, new USBCameraManager.OnPreviewListener() {
                     @Override
@@ -240,7 +251,6 @@ public class USBCameraActivity extends AppCompatActivity implements CameraDialog
     @Override
     protected void onDestroy() {
         super.onDestroy();
-        // 释放资源
         if(mUSBManager != null){
             mUSBManager.release();
         }
@@ -261,4 +271,8 @@ public class USBCameraActivity extends AppCompatActivity implements CameraDialog
             showShortMsg("取消操作");
         }
     }
+
+    public boolean isCameraOpened() {
+        return mUSBManager.isCameraOpened();
+    }
 }
diff --git a/app/src/main/res/layout/activity_usbcamera.xml b/app/src/main/res/layout/activity_usbcamera.xml
index 16c2ab1..3d5a5e6 100644
--- a/app/src/main/res/layout/activity_usbcamera.xml
+++ b/app/src/main/res/layout/activity_usbcamera.xml
@@ -1,25 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    xmlns:tools="http://schemas.android.com/tools"
     android:background="#ff000000"
     tools:context=".view.USBCameraActivity"
     tools:ignore="MergeRootFrame">
 
+    <Button
+        android:id="@+id/btn_contrast"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentTop="true"
+        android:text="对比度调整" />
+
+    <Button
+        android:id="@+id/btn_brightness"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentRight="true"
+        android:layout_alignParentTop="true"
+        android:text="亮度调整" />
+
     <com.serenegiant.usb.widget.UVCCameraTextureView
         android:id="@+id/camera_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_centerVertical="true"
-        android:layout_centerHorizontal="true"/>
-
-    <com.serenegiant.usb.widget.UVCCameraTextureView
-        android:id="@+id/camera_view2"
-        android:layout_width="300dp"
-        android:layout_height="300dp"
-        android:layout_alignParentTop="true"
-        android:layout_alignParentRight="true"/>
+        android:layout_centerHorizontal="true"
+        android:layout_centerVertical="true" />
 
     <Button
         android:id="@+id/btn_capture_pic"
@@ -27,39 +36,39 @@
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
         android:layout_marginBottom="10dp"
-        android:layout_marginRight="10dp"
         android:layout_marginLeft="10dp"
-        android:textSize="16sp"
-        android:text="抓拍"/>
+        android:layout_marginRight="10dp"
+        android:text="抓拍"
+        android:textSize="16sp" />
 
     <Button
-        android:layout_above="@id/btn_capture_pic"
         android:id="@+id/btn_rec_video"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginRight="10dp"
+        android:layout_above="@id/btn_capture_pic"
         android:layout_marginLeft="10dp"
-        android:textSize="16sp"
-        android:text="开始录制"/>
+        android:layout_marginRight="10dp"
+        android:text="开始录制"
+        android:textSize="16sp" />
 
     <Button
-        android:layout_above="@id/btn_rec_video"
         android:id="@+id/btn_update_resolution"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginRight="10dp"
+        android:layout_above="@id/btn_rec_video"
         android:layout_marginLeft="10dp"
-        android:textSize="16sp"
-        android:text="切换分辨率为320x240"/>
+        android:layout_marginRight="10dp"
+        android:text="切换分辨率为320x240"
+        android:textSize="16sp" />
 
     <Button
-        android:layout_above="@id/btn_update_resolution"
         android:id="@+id/btn_restart_camera"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginRight="10dp"
+        android:layout_above="@id/btn_update_resolution"
         android:layout_marginLeft="10dp"
-        android:textSize="16sp"
-        android:text="重启摄像头"/>
+        android:layout_marginRight="10dp"
+        android:text="重启摄像头"
+        android:textSize="16sp" />
 
 </RelativeLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 3ab3e9c..ed05faa 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -3,4 +3,5 @@
     <color name="colorPrimary">#3F51B5</color>
     <color name="colorPrimaryDark">#303F9F</color>
     <color name="colorAccent">#FF4081</color>
+    <color name="colorBlack">#000000</color>
 </resources>
diff --git a/libusbcamera/src/main/java/com/jiangdg/usbcamera/USBCameraManager.java b/libusbcamera/src/main/java/com/jiangdg/usbcamera/USBCameraManager.java
index 8bc1d6f..fc26587 100644
--- a/libusbcamera/src/main/java/com/jiangdg/usbcamera/USBCameraManager.java
+++ b/libusbcamera/src/main/java/com/jiangdg/usbcamera/USBCameraManager.java
@@ -59,6 +59,12 @@ public class USBCameraManager{
         return mUsbCamManager;
     }
 
+    public void closeCamera() {
+        if(mCameraHandler != null){
+            mCameraHandler.close();
+        }
+    }
+
     public interface OnMyDevConnectListener{
         void onAttachDev(UsbDevice device);
         void onDettachDev(UsbDevice device);
@@ -127,12 +133,12 @@ public class USBCameraManager{
             public void onCancel(UsbDevice device) {
             }
         });
-
     }
 
     public void createUVCCamera(CameraViewInterface cameraView) {
         if(cameraView == null)
             throw new NullPointerException("CameraViewInterface cannot be null!");
+
         // 释放CameraHandler占用的相关资源
         if(mCameraHandler != null){
             mCameraHandler.release();
@@ -177,6 +183,7 @@ public class USBCameraManager{
     public void restartUSBCamera(CameraViewInterface cameraView,final OnPreviewListener mPreviewListener){
         if(mCtrlBlock == null || cameraView == null)
            throw new NullPointerException("mCtrlBlock or cameraView is null,please connected to camera");
+
         // 创建Camera管理线程
         createUVCCamera(cameraView);
         // 创建Camera
@@ -315,12 +322,6 @@ public class USBCameraManager{
         return mUSBMonitor;
     }
 
-    // 关闭Camera
-    public void closeCamera() {
-        if(mCameraHandler != null){
-            mCameraHandler.release();
-        }
-    }
 
     // 打开Camera
     private void openCamera(USBMonitor.UsbControlBlock ctrlBlock) {
diff --git a/libusbcamera/src/main/java/com/serenegiant/usb/common/AbstractUVCCameraHandler.java b/libusbcamera/src/main/java/com/serenegiant/usb/common/AbstractUVCCameraHandler.java
index 0fbfb11..75de3fc 100644
--- a/libusbcamera/src/main/java/com/serenegiant/usb/common/AbstractUVCCameraHandler.java
+++ b/libusbcamera/src/main/java/com/serenegiant/usb/common/AbstractUVCCameraHandler.java
@@ -814,7 +814,8 @@ public  abstract class AbstractUVCCameraHandler extends Handler {
 				byte[] yuv = new byte[len];
 				frame.get(yuv);
 				if(mH264Consumer != null){
-					mH264Consumer.setRawYuv(yuv,640,480);
+					// 修改分辨率参数
+					mH264Consumer.setRawYuv(yuv,mWidth,mHeight);
 				}
 			}
 		};