1
2 /*
3 * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
4 *
5 * Use of this source code is governed by a BSD-style license
6 * that can be found in the LICENSE file in the root of the source
7 * tree. An additional intellectual property rights grant can be found
8 * in the file PATENTS. All contributing project authors may
9 * be found in the AUTHORS file in the root of the source tree.
10 */
11
12 #include "api/video/i444_buffer.h"
13
14 #include "api/video/i420_buffer.h"
15 #include "test/frame_utils.h"
16 #include "test/gmock.h"
17 #include "test/gtest.h"
18
19 namespace webrtc {
20
21 namespace {
GetY(rtc::scoped_refptr<I444BufferInterface> buf,int col,int row)22 int GetY(rtc::scoped_refptr<I444BufferInterface> buf, int col, int row) {
23 return buf->DataY()[row * buf->StrideY() + col];
24 }
25
GetU(rtc::scoped_refptr<I444BufferInterface> buf,int col,int row)26 int GetU(rtc::scoped_refptr<I444BufferInterface> buf, int col, int row) {
27 return buf->DataU()[row * buf->StrideU() + col];
28 }
29
GetV(rtc::scoped_refptr<I444BufferInterface> buf,int col,int row)30 int GetV(rtc::scoped_refptr<I444BufferInterface> buf, int col, int row) {
31 return buf->DataV()[row * buf->StrideV() + col];
32 }
33
FillI444Buffer(rtc::scoped_refptr<I444Buffer> buf)34 void FillI444Buffer(rtc::scoped_refptr<I444Buffer> buf) {
35 const uint8_t Y = 1;
36 const uint8_t U = 2;
37 const uint8_t V = 3;
38 for (int row = 0; row < buf->height(); ++row) {
39 for (int col = 0; col < buf->width(); ++col) {
40 buf->MutableDataY()[row * buf->StrideY() + col] = Y;
41 buf->MutableDataU()[row * buf->StrideU() + col] = U;
42 buf->MutableDataV()[row * buf->StrideV() + col] = V;
43 }
44 }
45 }
46
47 } // namespace
48
TEST(I444BufferTest,InitialData)49 TEST(I444BufferTest, InitialData) {
50 constexpr int stride = 3;
51 constexpr int width = 3;
52 constexpr int height = 3;
53
54 rtc::scoped_refptr<I444Buffer> i444_buffer(I444Buffer::Create(width, height));
55 EXPECT_EQ(width, i444_buffer->width());
56 EXPECT_EQ(height, i444_buffer->height());
57 EXPECT_EQ(stride, i444_buffer->StrideY());
58 EXPECT_EQ(stride, i444_buffer->StrideU());
59 EXPECT_EQ(stride, i444_buffer->StrideV());
60 EXPECT_EQ(3, i444_buffer->ChromaWidth());
61 EXPECT_EQ(3, i444_buffer->ChromaHeight());
62 }
63
TEST(I444BufferTest,ReadPixels)64 TEST(I444BufferTest, ReadPixels) {
65 constexpr int width = 3;
66 constexpr int height = 3;
67
68 rtc::scoped_refptr<I444Buffer> i444_buffer(I444Buffer::Create(width, height));
69 // Y = 1, U = 2, V = 3.
70 FillI444Buffer(i444_buffer);
71 for (int row = 0; row < height; row++) {
72 for (int col = 0; col < width; col++) {
73 EXPECT_EQ(1, GetY(i444_buffer, col, row));
74 EXPECT_EQ(2, GetU(i444_buffer, col, row));
75 EXPECT_EQ(3, GetV(i444_buffer, col, row));
76 }
77 }
78 }
79
TEST(I444BufferTest,ToI420)80 TEST(I444BufferTest, ToI420) {
81 constexpr int width = 3;
82 constexpr int height = 3;
83 constexpr int size_y = width * height;
84 constexpr int size_u = (width + 1) / 2 * (height + 1) / 2;
85 constexpr int size_v = (width + 1) / 2 * (height + 1) / 2;
86 rtc::scoped_refptr<I420Buffer> reference(I420Buffer::Create(width, height));
87 memset(reference->MutableDataY(), 8, size_y);
88 memset(reference->MutableDataU(), 4, size_u);
89 memset(reference->MutableDataV(), 2, size_v);
90
91 rtc::scoped_refptr<I444Buffer> i444_buffer(I444Buffer::Create(width, height));
92 // Convert the reference buffer to I444.
93 memset(i444_buffer->MutableDataY(), 8, size_y);
94 memset(i444_buffer->MutableDataU(), 4, size_y);
95 memset(i444_buffer->MutableDataV(), 2, size_y);
96
97 // Confirm YUV values are as expected.
98 for (int row = 0; row < height; row++) {
99 for (int col = 0; col < width; col++) {
100 EXPECT_EQ(8, GetY(i444_buffer, col, row));
101 EXPECT_EQ(4, GetU(i444_buffer, col, row));
102 EXPECT_EQ(2, GetV(i444_buffer, col, row));
103 }
104 }
105
106 rtc::scoped_refptr<I420BufferInterface> i420_buffer(i444_buffer->ToI420());
107 EXPECT_EQ(height, i420_buffer->height());
108 EXPECT_EQ(width, i420_buffer->width());
109 EXPECT_TRUE(test::FrameBufsEqual(reference, i420_buffer));
110 }
111
112 } // namespace webrtc
113