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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.tv.tuner.tvinput;
     18 
     19 import android.os.SystemClock;
     20 import android.util.Log;
     21 
     22 /**
     23  * A class to maintain various debugging information.
     24  */
     25 public class TunerDebug {
     26     private static final String TAG = "TunerDebug";
     27     public static final boolean ENABLED = false;
     28 
     29     private int mVideoFrameDrop;
     30     private int mBytesInQueue;
     31 
     32     private long mAudioPositionUs;
     33     private long mAudioPtsUs;
     34     private long mVideoPtsUs;
     35 
     36     private long mLastAudioPositionUs;
     37     private long mLastAudioPtsUs;
     38     private long mLastVideoPtsUs;
     39     private long mLastCheckTimestampMs;
     40 
     41     private long mAudioPositionUsRate;
     42     private long mAudioPtsUsRate;
     43     private long mVideoPtsUsRate;
     44 
     45     private TunerDebug() {
     46         mVideoFrameDrop = 0;
     47         mLastCheckTimestampMs = SystemClock.elapsedRealtime();
     48     }
     49 
     50     private static class LazyHolder {
     51         private static final TunerDebug INSTANCE = new TunerDebug();
     52     }
     53 
     54     public static TunerDebug getInstance() {
     55         return LazyHolder.INSTANCE;
     56     }
     57 
     58     public static void notifyVideoFrameDrop(int count, long delta) {
     59         // TODO: provide timestamp mismatch information using delta
     60         TunerDebug sTunerDebug = getInstance();
     61         sTunerDebug.mVideoFrameDrop += count;
     62     }
     63 
     64     public static int getVideoFrameDrop() {
     65         TunerDebug sTunerDebug = getInstance();
     66         int videoFrameDrop = sTunerDebug.mVideoFrameDrop;
     67         if (videoFrameDrop > 0) {
     68             Log.d(TAG, "Dropped video frame: " + videoFrameDrop);
     69         }
     70         sTunerDebug.mVideoFrameDrop = 0;
     71         return videoFrameDrop;
     72     }
     73 
     74     public static void setBytesInQueue(int bytesInQueue) {
     75         TunerDebug sTunerDebug = getInstance();
     76         sTunerDebug.mBytesInQueue = bytesInQueue;
     77     }
     78 
     79     public static int getBytesInQueue() {
     80         TunerDebug sTunerDebug = getInstance();
     81         return sTunerDebug.mBytesInQueue;
     82     }
     83 
     84     public static void setAudioPositionUs(long audioPositionUs) {
     85         TunerDebug sTunerDebug = getInstance();
     86         sTunerDebug.mAudioPositionUs = audioPositionUs;
     87     }
     88 
     89     public static long getAudioPositionUs() {
     90         TunerDebug sTunerDebug = getInstance();
     91         return sTunerDebug.mAudioPositionUs;
     92     }
     93 
     94     public static void setAudioPtsUs(long audioPtsUs) {
     95         TunerDebug sTunerDebug = getInstance();
     96         sTunerDebug.mAudioPtsUs = audioPtsUs;
     97     }
     98 
     99     public static long getAudioPtsUs() {
    100         TunerDebug sTunerDebug = getInstance();
    101         return sTunerDebug.mAudioPtsUs;
    102     }
    103 
    104     public static void setVideoPtsUs(long videoPtsUs) {
    105         TunerDebug sTunerDebug = getInstance();
    106         sTunerDebug.mVideoPtsUs = videoPtsUs;
    107     }
    108 
    109     public static long getVideoPtsUs() {
    110         TunerDebug sTunerDebug = getInstance();
    111         return sTunerDebug.mVideoPtsUs;
    112     }
    113 
    114     public static void calculateDiff() {
    115         TunerDebug sTunerDebug = getInstance();
    116         long currentTime = SystemClock.elapsedRealtime();
    117         long duration = currentTime - sTunerDebug.mLastCheckTimestampMs;
    118         if (duration != 0) {
    119             sTunerDebug.mAudioPositionUsRate =
    120                     (sTunerDebug.mAudioPositionUs - sTunerDebug.mLastAudioPositionUs) * 1000
    121                     / duration;
    122             sTunerDebug.mAudioPtsUsRate =
    123                     (sTunerDebug.mAudioPtsUs - sTunerDebug.mLastAudioPtsUs) * 1000
    124                     / duration;
    125             sTunerDebug.mVideoPtsUsRate =
    126                     (sTunerDebug.mVideoPtsUs - sTunerDebug.mLastVideoPtsUs) * 1000
    127                     / duration;
    128         }
    129 
    130         sTunerDebug.mLastAudioPositionUs = sTunerDebug.mAudioPositionUs;
    131         sTunerDebug.mLastAudioPtsUs = sTunerDebug.mAudioPtsUs;
    132         sTunerDebug.mLastVideoPtsUs = sTunerDebug.mVideoPtsUs;
    133         sTunerDebug.mLastCheckTimestampMs = currentTime;
    134     }
    135 
    136     public static long getAudioPositionUsRate() {
    137         TunerDebug sTunerDebug = getInstance();
    138         return sTunerDebug.mAudioPositionUsRate;
    139     }
    140 
    141     public static long getAudioPtsUsRate() {
    142         TunerDebug sTunerDebug = getInstance();
    143         return sTunerDebug.mAudioPtsUsRate;
    144     }
    145 
    146     public static long getVideoPtsUsRate() {
    147         TunerDebug sTunerDebug = getInstance();
    148         return sTunerDebug.mVideoPtsUsRate;
    149     }
    150 }
    151