修复没有OSD时空指针bug

app/src/main/java/com/xypower/mpapp/v2/Camera2VideoActivity.java

@@ -346,19 +346,21 @@ public class Camera2VideoActivity extends AppCompatActivity {
 
                 mGPUCameraRecorder.start(mNextVideoAbsolutePath);
 
-                long ts2 = System.currentTimeMillis();
-                long zeroTs2 = ts2 - (ts2 % 1000);
+                if (mOSDFilter != null) {
+                    long ts2 = System.currentTimeMillis();
+                    long zeroTs2 = ts2 - (ts2 % 1000);
+
+                    if (zeroTs2 > prevZeroTs) {
+                        // Next second
+                        mOSDFilter.updateBitmap(mBitmap);
+                        mBitmap = null;
+                        mOsdTs = zeroTs2 + 1000;
+                        mOSDSemaphore.release();
+                    }
 
-                if (zeroTs2 > prevZeroTs) {
-                    // Next second
-                    mOSDFilter.updateBitmap(mBitmap);
-                    mBitmap = null;
-                    mOsdTs = zeroTs2 + 1000;
-                    mOSDSemaphore.release();
+                    Log.d("OSD", "Cur TS=" + Long.toString(ts2 / 1000) + " Timer=" + Long.toString(1000 - (ts2 - zeroTs2)));
+                    mHandler.postDelayed(mTimerRunnable, 1000 - (ts2 - zeroTs2));
                 }
-
-                Log.d("OSD", "Cur TS=" + Long.toString(ts2 / 1000) + " Timer=" + Long.toString(1000 - (ts2 - zeroTs2)));
-                mHandler.postDelayed(mTimerRunnable, 1000 - (ts2 - zeroTs2));
             }
         }, 0);