1 /*
2  * Copyright 2023 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 androidx.camera.camera2.pipe.testing
18 
19 import android.graphics.SurfaceTexture
20 import android.util.Size
21 import android.view.Surface
22 import kotlinx.atomicfu.atomic
23 
24 /**
25  * Utility class for creating fake Surface objects for tests.
26  *
27  * Close this object to release all surfaces during tests.
28  */
29 public class FakeSurfaces : AutoCloseable {
30     private val fakeSurfaces = mutableListOf<Surface>()
31 
createFakeSurfacenull32     public fun createFakeSurface(size: Size = Size(640, 480)): Surface {
33         val surface = create(size)
34         synchronized(fakeSurfaces) { fakeSurfaces.add(surface) }
35         return surface
36     }
37 
closenull38     override fun close() {
39         synchronized(fakeSurfaces) {
40             for (surface in fakeSurfaces) {
41                 surface.release()
42             }
43             fakeSurfaces.clear()
44         }
45     }
46 
47     public companion object {
48         private val fakeSurfaceTextureNames = atomic(0)
49 
createnull50         public fun create(size: Size = Size(640, 480)): Surface {
51             return Surface(
52                 SurfaceTexture(fakeSurfaceTextureNames.getAndIncrement()).also {
53                     it.setDefaultBufferSize(size.width, size.height)
54                 }
55             )
56         }
57     }
58 }
59