1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "remoting/codec/video_encoder_vpx.h"
#include <stdint.h>
#include <limits>
#include <memory>
#include <vector>
#include "remoting/codec/codec_test.h"
#include "remoting/proto/video.pb.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
namespace remoting {
// xRGB pixel colors for use by tests.
const uint32_t kBlueColor = 0x0000ff;
const uint32_t kGreenColor = 0x00ff00;
// Creates a frame stippled between blue and red pixels, which is useful for
// lossy/lossless color tests. By default all pixels in the frame are included
// in the updated_region().
static std::unique_ptr<webrtc::DesktopFrame> CreateTestFrame(
const webrtc::DesktopSize& frame_size) {
std::unique_ptr<webrtc::DesktopFrame> frame(
new webrtc::BasicDesktopFrame(frame_size));
for (int x = 0; x < frame_size.width(); ++x) {
for (int y = 0; y < frame_size.height(); ++y) {
uint8_t* pixel_u8 = frame->data() + (y * frame->stride()) +
(x * webrtc::DesktopFrame::kBytesPerPixel);
*(reinterpret_cast<uint32_t*>(pixel_u8)) =
((x + y) & 1) ? kGreenColor : kBlueColor;
}
}
frame->mutable_updated_region()->SetRect(
webrtc::DesktopRect::MakeSize(frame_size));
return frame;
}
TEST(VideoEncoderVpxTest, Vp8) {
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP8());
TestVideoEncoder(encoder.get(), false);
}
TEST(VideoEncoderVpxTest, Vp9) {
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP9());
// VP9 encoder defaults to lossy (I420) color.
TestVideoEncoder(encoder.get(), false);
}
// Test that the VP9 encoder can switch between lossy & lossless color.
TEST(VideoEncoderVpxTest, Vp9LossyColorSwitching) {
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP9());
webrtc::DesktopSize frame_size(100, 100);
std::unique_ptr<webrtc::DesktopFrame> frame(CreateTestFrame(frame_size));
// Lossy encode the first frame.
encoder->SetLosslessColor(false);
std::unique_ptr<VideoPacket> lossy_packet = encoder->Encode(*frame);
// Lossless encode the second frame.
encoder->SetLosslessColor(true);
std::unique_ptr<VideoPacket> lossless_packet = encoder->Encode(*frame);
// Lossy encode one more frame.
encoder->SetLosslessColor(false);
lossy_packet = encoder->Encode(*frame);
}
// Test that the VP8 encoder ignores lossless modes without crashing.
TEST(VideoEncoderVpxTest, Vp8IgnoreLossy) {
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP8());
webrtc::DesktopSize frame_size(100, 100);
std::unique_ptr<webrtc::DesktopFrame> frame(CreateTestFrame(frame_size));
// Encode a frame, to give the encoder a chance to crash if misconfigured.
encoder->SetLosslessColor(true);
std::unique_ptr<VideoPacket> packet = encoder->Encode(*frame);
EXPECT_TRUE(packet);
}
// Test that calling Encode with a larger frame size than the initial one
// does not cause VP8 to crash.
TEST(VideoEncoderVpxTest, Vp8SizeChangeNoCrash) {
webrtc::DesktopSize frame_size(100, 100);
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP8());
// Create first frame & encode it.
std::unique_ptr<webrtc::DesktopFrame> frame(CreateTestFrame(frame_size));
std::unique_ptr<VideoPacket> packet = encoder->Encode(*frame);
EXPECT_TRUE(packet);
// Double the size of the frame, and updated region, and encode again.
frame_size.set(frame_size.width() * 2, frame_size.height() * 2);
frame = CreateTestFrame(frame_size);
packet = encoder->Encode(*frame);
EXPECT_TRUE(packet);
}
// Test that calling Encode with a larger frame size than the initial one
// does not cause VP9 to crash.
TEST(VideoEncoderVpxTest, Vp9SizeChangeNoCrash) {
webrtc::DesktopSize frame_size(100, 100);
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP9());
// Create first frame & encode it.
std::unique_ptr<webrtc::DesktopFrame> frame(CreateTestFrame(frame_size));
std::unique_ptr<VideoPacket> packet = encoder->Encode(*frame);
EXPECT_TRUE(packet);
// Double the size of the frame, and updated region, and encode again.
frame_size.set(frame_size.width() * 2, frame_size.height() * 2);
frame = CreateTestFrame(frame_size);
packet = encoder->Encode(*frame);
EXPECT_TRUE(packet);
}
// Test that the DPI information is correctly propagated from the
// webrtc::DesktopFrame to the VideoPacket.
TEST(VideoEncoderVpxTest, DpiPropagation) {
webrtc::DesktopSize frame_size(32, 32);
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP8());
std::unique_ptr<webrtc::DesktopFrame> frame(CreateTestFrame(frame_size));
frame->set_dpi(webrtc::DesktopVector(96, 97));
std::unique_ptr<VideoPacket> packet = encoder->Encode(*frame);
EXPECT_EQ(packet->format().x_dpi(), 96);
EXPECT_EQ(packet->format().y_dpi(), 97);
}
TEST(VideoEncoderVpxTest, Vp8EncodeUnchangedFrame) {
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP8());
TestVideoEncoderEmptyFrames(encoder.get(), 0);
}
TEST(VideoEncoderVpxTest, Vp9LossyUnchangedFrame) {
std::unique_ptr<VideoEncoderVpx> encoder(VideoEncoderVpx::CreateForVP9());
// Expect that VP9+CR should generate no more than 10 top-off frames
// per cycle, and take no more than 2 cycles to top-off.
TestVideoEncoderEmptyFrames(encoder.get(), 20);
}
} // namespace remoting
|
