diff --git a/app/src/main/java/net/ossrs/yasea/SrsCameraView.java b/app/src/main/java/net/ossrs/yasea/SrsCameraView.java
index 046c9b5..0b2e18c 100644
--- a/app/src/main/java/net/ossrs/yasea/SrsCameraView.java
+++ b/app/src/main/java/net/ossrs/yasea/SrsCameraView.java
@@ -26,7 +26,7 @@ import javax.microedition.khronos.opengles.GL10;
 /**
  * Created by Leo Ma on 2016/2/25.
  */
-public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Renderer, Camera.PreviewCallback {
+public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Renderer {
 
     private GPUImageFilter magicFilter;
 
@@ -40,7 +40,6 @@ public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Render
 
     private Camera mCamera;
     private ByteBuffer mGlPreviewBuffer;
-    private byte[] mYuvPreviewBuffer;
     private int mCamId = Camera.CameraInfo.CAMERA_FACING_FRONT;
     private int mPreviewRotation = 90;
 
@@ -118,12 +117,6 @@ public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Render
         }
     }
 
-    @Override
-    public void onPreviewFrame(byte[] data, Camera camera) {
-        mPrevCb.onGetYuvFrame(data);
-        camera.addCallbackBuffer(mYuvPreviewBuffer);
-    }
-
     public void setPreviewCallback(PreviewCallback cb) {
         mPrevCb = cb;
     }
@@ -226,8 +219,6 @@ public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Render
             params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
         }
 
-        mYuvPreviewBuffer = new byte[mPreviewWidth * mPreviewHeight * 3 / 2];
-
         /***** set parameters *****/
         //params.set("orientation", "portrait");
         //params.set("orientation", "landscape");