translate MediaPlayer into English

translate MediaPlayer into English

app/src/main/java/com/frank/ffmpeg/AudioPlayer.java

@@ -41,7 +41,7 @@ public class AudioPlayer {
     public native static void lameClose();
 
     /**
-     * Create an AudioTrack instance for JNI call
+     * Create an AudioTrack instance for JNI calling
      *
      * @param sampleRate sampleRate
      * @param channels   channel layout

app/src/main/java/com/frank/ffmpeg/MediaPlayer.java

@@ -5,7 +5,7 @@ import android.media.AudioManager;
 import android.media.AudioTrack;
 
 /**
- * 音视频播放器
+ * Using FFmpeg to play media
  * Created by frank on 2018/2/12.
  */
 
@@ -15,14 +15,17 @@ public class MediaPlayer {
     }
 
     public native int setup(String filePath, Object surface);
+
     public native int play();
+
     public native void release();
 
 
     /**
-     * 创建一个AudioTrack对象
-     * @param sampleRate 采样率
-     * @param channels 声道布局
+     * Create an AudioTrack instance for JNI calling
+     *
+     * @param sampleRate sampleRate
+     * @param channels   channel layout
      * @return AudioTrack
      */
     public AudioTrack createAudioTrack(int sampleRate, int channels) {