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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "remoting/capturer/video_frame_capturer_fake.h" | |
6 | |
7 #include "base/time.h" | |
8 #include "remoting/capturer/capture_data.h" | |
9 | |
10 namespace remoting { | |
11 | |
12 // VideoFrameCapturerFake generates a white picture of size kWidth x kHeight | |
13 // with a rectangle of size kBoxWidth x kBoxHeight. The rectangle moves kSpeed | |
14 // pixels per frame along both axes, and bounces off the sides of the screen. | |
15 static const int kWidth = VideoFrameCapturerFake::kWidth; | |
16 static const int kHeight = VideoFrameCapturerFake::kHeight; | |
17 static const int kBoxWidth = 140; | |
18 static const int kBoxHeight = 140; | |
19 static const int kSpeed = 20; | |
20 | |
21 COMPILE_ASSERT(kBoxWidth < kWidth && kBoxHeight < kHeight, bad_box_size); | |
22 COMPILE_ASSERT((kBoxWidth % kSpeed == 0) && (kWidth % kSpeed == 0) && | |
23 (kBoxHeight % kSpeed == 0) && (kHeight % kSpeed == 0), | |
24 sizes_must_be_multiple_of_kSpeed); | |
25 | |
26 VideoFrameCapturerFake::VideoFrameCapturerFake() | |
27 : size_(SkISize::Make(0, 0)), | |
28 bytes_per_row_(0), | |
29 box_pos_x_(0), | |
30 box_pos_y_(0), | |
31 box_speed_x_(kSpeed), | |
32 box_speed_y_(kSpeed), | |
33 current_buffer_(0) { | |
34 ScreenConfigurationChanged(); | |
35 } | |
36 | |
37 VideoFrameCapturerFake::~VideoFrameCapturerFake() { | |
38 } | |
39 | |
40 void VideoFrameCapturerFake::Start(Delegate* delegate) { | |
41 delegate_ = delegate; | |
42 } | |
43 | |
44 void VideoFrameCapturerFake::Stop() { | |
45 } | |
46 | |
47 void VideoFrameCapturerFake::InvalidateRegion(const SkRegion& invalid_region) { | |
48 helper_.InvalidateRegion(invalid_region); | |
49 } | |
50 | |
51 void VideoFrameCapturerFake::CaptureFrame() { | |
52 base::Time capture_start_time = base::Time::Now(); | |
53 | |
54 GenerateImage(); | |
55 helper_.InvalidateScreen(size_); | |
56 | |
57 SkRegion invalid_region; | |
58 helper_.SwapInvalidRegion(&invalid_region); | |
59 | |
60 current_buffer_ = (current_buffer_ + 1) % kNumBuffers; | |
61 | |
62 scoped_refptr<CaptureData> capture_data(new CaptureData( | |
63 buffers_[current_buffer_].get(), bytes_per_row_, size_)); | |
64 capture_data->mutable_dirty_region() = invalid_region; | |
65 | |
66 helper_.set_size_most_recent(capture_data->size()); | |
67 | |
68 capture_data->set_capture_time_ms( | |
69 (base::Time::Now() - capture_start_time).InMillisecondsRoundedUp()); | |
70 delegate_->OnCaptureCompleted(capture_data); | |
71 } | |
72 | |
73 void VideoFrameCapturerFake::GenerateImage() { | |
74 memset(buffers_[current_buffer_].get(), 0xff, | |
75 size_.width() * size_.height() * CaptureData::kBytesPerPixel); | |
76 | |
77 uint8* row = buffers_[current_buffer_].get() + | |
78 (box_pos_y_ * size_.width() + box_pos_x_) * CaptureData::kBytesPerPixel; | |
79 | |
80 box_pos_x_ += box_speed_x_; | |
81 if (box_pos_x_ + kBoxWidth >= size_.width() || box_pos_x_ == 0) | |
82 box_speed_x_ = -box_speed_x_; | |
83 | |
84 box_pos_y_ += box_speed_y_; | |
85 if (box_pos_y_ + kBoxHeight >= size_.height() || box_pos_y_ == 0) | |
86 box_speed_y_ = -box_speed_y_; | |
87 | |
88 // Draw rectangle with the following colors in its corners: | |
89 // cyan....yellow | |
90 // .............. | |
91 // blue.......red | |
92 for (int y = 0; y < kBoxHeight; ++y) { | |
93 for (int x = 0; x < kBoxWidth; ++x) { | |
94 int r = x * 255 / kBoxWidth; | |
95 int g = y * 255 / kBoxHeight; | |
96 int b = 255 - (x * 255 / kBoxWidth); | |
97 row[x * CaptureData::kBytesPerPixel] = r; | |
98 row[x * CaptureData::kBytesPerPixel + 1] = g; | |
99 row[x * CaptureData::kBytesPerPixel + 2] = b; | |
100 row[x * CaptureData::kBytesPerPixel + 3] = 0xff; | |
101 } | |
102 row += bytes_per_row_; | |
103 } | |
104 } | |
105 | |
106 void VideoFrameCapturerFake::ScreenConfigurationChanged() { | |
107 size_ = SkISize::Make(kWidth, kHeight); | |
108 bytes_per_row_ = size_.width() * CaptureData::kBytesPerPixel; | |
109 | |
110 // Create memory for the buffers. | |
111 int buffer_size = size_.height() * bytes_per_row_; | |
112 for (int i = 0; i < kNumBuffers; i++) { | |
113 buffers_[i].reset(new uint8[buffer_size]); | |
114 } | |
115 } | |
116 | |
117 } // namespace remoting | |
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