translate the note of MediaPlayerActivity into English

translate the note of MediaPlayerActivity into English

app/src/main/java/com/frank/ffmpeg/activity/BaseActivity.java

@@ -5,8 +5,10 @@ import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.os.Build;
 import android.os.Bundle;
+
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
+
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.Menu;
@@ -18,7 +20,7 @@ import com.frank.ffmpeg.R;
 import com.frank.ffmpeg.util.ContentUtil;
 
 /**
- * Activity基类
+ * base Activity
  * Created by frank on 2019/11/2.
  */
 

app/src/main/java/com/frank/ffmpeg/activity/MediaPlayerActivity.java

@@ -12,7 +12,7 @@ import com.frank.ffmpeg.R;
 import com.frank.ffmpeg.util.FileUtil;
 
 /**
- * 音视频解码播放
+ * mediaPlayer, which decode by software
  * Created by frank on 2018/2/12.
  */