Frame.h revision cd55852fcd840f7f4c4d7a0a7253a2995c77afa2 
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 <stdint.h>
20
21struct SkRect;
22typedef void *EGLSurface;
23
24namespace android {
25namespace uirenderer {
26namespace renderthread {
27
28class Frame {
29public:
30    Frame(int32_t width, int32_t height, int32_t bufferAge)
31            : mWidth(width)
32            , mHeight(height)
33            , mBufferAge(bufferAge) { }
34
35    int32_t width() const { return mWidth; }
36    int32_t height() const { return mHeight; }
37
38    // See: https://www.khronos.org/registry/egl/extensions/EXT/EGL_EXT_buffer_age.txt
39    // for what this means
40    int32_t bufferAge() const { return mBufferAge; }
41
42private:
43    Frame() {}
44    friend class EglManager;
45
46    int32_t mWidth;
47    int32_t mHeight;
48    int32_t mBufferAge;
49
50    EGLSurface mSurface;
51
52    // Maps from 0,0 in top-left to 0,0 in bottom-left
53    // If out is not an int32_t[4] you're going to have a bad time
54    void map(const SkRect& in, int32_t* out) const;
55};
56
57} /* namespace renderthread */
58} /* namespace uirenderer */
59} /* namespace android */
60
61