1 /*
2  * Copyright (C) 2021 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 android.mediapc.cts;
18 
19 import android.app.Activity;
20 import android.os.Bundle;
21 import android.os.SystemClock;
22 import android.util.DisplayMetrics;
23 import android.util.Log;
24 import android.view.Surface;
25 import android.view.SurfaceHolder;
26 import android.view.SurfaceView;
27 import android.view.ViewGroup;
28 
29 import java.util.concurrent.TimeUnit;
30 import java.util.concurrent.locks.Condition;
31 import java.util.concurrent.locks.Lock;
32 import java.util.concurrent.locks.ReentrantLock;
33 
34 public class TestActivity extends Activity implements SurfaceHolder.Callback {
35     private static final String LOG_TAG = TestActivity.class.getSimpleName();
36     private SurfaceView mSurfaceView;
37     private SurfaceHolder mHolder;
38     private Surface mSurface;
39     private final Lock mLock = new ReentrantLock();
40     private final Condition mCondition = mLock.newCondition();
41 
42     @Override
onCreate(Bundle savedInstanceState)43     protected void onCreate(Bundle savedInstanceState) {
44         super.onCreate(savedInstanceState);
45         setContentView(R.layout.media_decoder_surface_layout);
46         mSurfaceView = findViewById(R.id.surface);
47         mHolder = mSurfaceView.getHolder();
48         mHolder.addCallback(this);
49     }
50 
51     @Override
surfaceCreated(SurfaceHolder holder)52     public void surfaceCreated(SurfaceHolder holder) {
53         Log.v(LOG_TAG, "surface created");
54         mLock.lock();
55         mSurface = mHolder.getSurface();
56         mLock.unlock();
57     }
58 
59     @Override
surfaceChanged(SurfaceHolder holder, int format, int width, int height)60     public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
61         Log.v(LOG_TAG, "surface changed " + format + " " + width + " " + height);
62     }
63 
64     @Override
surfaceDestroyed(SurfaceHolder holder)65     public void surfaceDestroyed(SurfaceHolder holder) {
66         Log.v(LOG_TAG, "surface deleted");
67         mLock.lock();
68         mSurface = null;
69         mLock.unlock();
70     }
71 
waitTillSurfaceIsCreated()72     public void waitTillSurfaceIsCreated() throws InterruptedException {
73         final long mWaitTimeMs = 1000;
74         final int retries = 3;
75         mLock.lock();
76         final long start = SystemClock.elapsedRealtime();
77         while ((SystemClock.elapsedRealtime() - start) < (retries * mWaitTimeMs) &&
78                 mSurface == null) {
79             mCondition.await(mWaitTimeMs, TimeUnit.MILLISECONDS);
80         }
81         mLock.unlock();
82         if (mSurface == null) {
83             throw new InterruptedException("Taking too long to attach a SurfaceView to a window.");
84         }
85     }
86 
getSurface()87     public Surface getSurface() {
88         return mSurface;
89     }
90 
setScreenParams(int width, int height, boolean noStretch)91     public void setScreenParams(int width, int height, boolean noStretch) {
92         ViewGroup.LayoutParams lp = mSurfaceView.getLayoutParams();
93         final DisplayMetrics dm = getResources().getDisplayMetrics();
94         if (noStretch && width <= dm.widthPixels && height <= dm.heightPixels) {
95             lp.width = width;
96             lp.height = height;
97         } else {
98             int a = dm.widthPixels * height / width;
99             if (a <= dm.heightPixels) {
100                 lp.width = dm.widthPixels;
101                 lp.height = a;
102             } else {
103                 lp.width = dm.heightPixels * width / height;
104                 lp.height = dm.heightPixels;
105             }
106         }
107         runOnUiThread(() -> mSurfaceView.setLayoutParams(lp));
108     }
109 }
110