1 /*
2  * Copyright (C) 2016 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 #pragma once
18 
19 #include "Rect.h"
20 #include "renderthread/RenderThread.h"
21 
22 #include <SkBitmap.h>
23 
24 namespace android {
25 class GraphicBuffer;
26 class Surface;
27 namespace uirenderer {
28 
29 // Keep in sync with PixelCopy.java codes
30 enum class CopyResult {
31     Success = 0,
32     UnknownError = 1,
33     Timeout = 2,
34     SourceEmpty = 3,
35     SourceInvalid = 4,
36     DestinationInvalid = 5,
37 };
38 
39 class Readback {
40 public:
41     /**
42      * Copies the surface's most recently queued buffer into the provided bitmap.
43      */
44     virtual CopyResult copySurfaceInto(Surface& surface, const Rect& srcRect, SkBitmap* bitmap) = 0;
45     virtual CopyResult copyGraphicBufferInto(GraphicBuffer* graphicBuffer, SkBitmap* bitmap) = 0;
46 
47 protected:
Readback(renderthread::RenderThread & thread)48     explicit Readback(renderthread::RenderThread& thread) : mRenderThread(thread) {}
~Readback()49     virtual ~Readback() {}
50 
51     renderthread::RenderThread& mRenderThread;
52 };
53 
54 }  // namespace uirenderer
55 }  // namespace android
56