FillBuffer.cpp revision cb1fcdedaaf95acabeac6a2d5bff423d6ca62296 
1/*
2 * Copyright 2013 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#include "FillBuffer.h"
18
19#include <ui/GraphicBuffer.h>
20
21#include <gtest/gtest.h>
22
23namespace android {
24
25void fillYV12Buffer(uint8_t* buf, int w, int h, int stride) {
26    const int blockWidth = w > 16 ? w / 16 : 1;
27    const int blockHeight = h > 16 ? h / 16 : 1;
28    const int yuvTexOffsetY = 0;
29    int yuvTexStrideY = stride;
30    int yuvTexOffsetV = yuvTexStrideY * h;
31    int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf;
32    int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * h/2;
33    int yuvTexStrideU = yuvTexStrideV;
34    for (int x = 0; x < w; x++) {
35        for (int y = 0; y < h; y++) {
36            int parityX = (x / blockWidth) & 1;
37            int parityY = (y / blockHeight) & 1;
38            unsigned char intensity = (parityX ^ parityY) ? 63 : 191;
39            buf[yuvTexOffsetY + (y * yuvTexStrideY) + x] = intensity;
40            if (x < w / 2 && y < h / 2) {
41                buf[yuvTexOffsetU + (y * yuvTexStrideU) + x] = intensity;
42                if (x * 2 < w / 2 && y * 2 < h / 2) {
43                    buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 0] =
44                    buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 1] =
45                    buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 0] =
46                    buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 1] =
47                        intensity;
48                }
49            }
50        }
51    }
52}
53
54void fillYV12BufferRect(uint8_t* buf, int w, int h, int stride,
55        const android_native_rect_t& rect) {
56    const int yuvTexOffsetY = 0;
57    int yuvTexStrideY = stride;
58    int yuvTexOffsetV = yuvTexStrideY * h;
59    int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf;
60    int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * h/2;
61    int yuvTexStrideU = yuvTexStrideV;
62    for (int x = 0; x < w; x++) {
63        for (int y = 0; y < h; y++) {
64            bool inside = rect.left <= x && x < rect.right &&
65                    rect.top <= y && y < rect.bottom;
66            buf[yuvTexOffsetY + (y * yuvTexStrideY) + x] = inside ? 240 : 64;
67            if (x < w / 2 && y < h / 2) {
68                bool inside = rect.left <= 2*x && 2*x < rect.right &&
69                        rect.top <= 2*y && 2*y < rect.bottom;
70                buf[yuvTexOffsetU + (y * yuvTexStrideU) + x] = 16;
71                buf[yuvTexOffsetV + (y * yuvTexStrideV) + x] =
72                        inside ? 16 : 255;
73            }
74        }
75    }
76}
77
78void fillRGBA8Buffer(uint8_t* buf, int w, int h, int stride) {
79    const size_t PIXEL_SIZE = 4;
80    for (int x = 0; x < w; x++) {
81        for (int y = 0; y < h; y++) {
82            off_t offset = (y * stride + x) * PIXEL_SIZE;
83            for (int c = 0; c < 4; c++) {
84                int parityX = (x / (1 << (c+2))) & 1;
85                int parityY = (y / (1 << (c+2))) & 1;
86                buf[offset + c] = (parityX ^ parityY) ? 231 : 35;
87            }
88        }
89    }
90}
91
92void produceOneRGBA8Frame(const sp<ANativeWindow>& anw) {
93    android_native_buffer_t* anb;
94    ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(anw.get(),
95            &anb));
96    ASSERT_TRUE(anb != NULL);
97
98    sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
99
100    uint8_t* img = NULL;
101    ASSERT_EQ(NO_ERROR, buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN,
102            (void**)(&img)));
103    fillRGBA8Buffer(img, buf->getWidth(), buf->getHeight(), buf->getStride());
104    ASSERT_EQ(NO_ERROR, buf->unlock());
105    ASSERT_EQ(NO_ERROR, anw->queueBuffer(anw.get(), buf->getNativeBuffer(),
106            -1));
107}
108} // namespace android
109