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| 1 // Copyright 2013 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/host/screen_capturer_fake.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/time/time.h" | |
| 9 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h" | |
| 10 | |
| 11 namespace remoting { | |
| 12 | |
| 13 // ScreenCapturerFake generates a white picture of size kWidth x kHeight | |
| 14 // with a rectangle of size kBoxWidth x kBoxHeight. The rectangle moves kSpeed | |
| 15 // pixels per frame along both axes, and bounces off the sides of the screen. | |
| 16 static const int kWidth = ScreenCapturerFake::kWidth; | |
| 17 static const int kHeight = ScreenCapturerFake::kHeight; | |
| 18 static const int kBoxWidth = 140; | |
| 19 static const int kBoxHeight = 140; | |
| 20 static const int kSpeed = 20; | |
| 21 | |
| 22 COMPILE_ASSERT(kBoxWidth < kWidth && kBoxHeight < kHeight, bad_box_size); | |
| 23 COMPILE_ASSERT((kBoxWidth % kSpeed == 0) && (kWidth % kSpeed == 0) && | |
| 24 (kBoxHeight % kSpeed == 0) && (kHeight % kSpeed == 0), | |
| 25 sizes_must_be_multiple_of_kSpeed); | |
| 26 | |
| 27 ScreenCapturerFake::ScreenCapturerFake() | |
| 28 : callback_(NULL), | |
| 29 mouse_shape_observer_(NULL), | |
| 30 bytes_per_row_(0), | |
| 31 box_pos_x_(0), | |
| 32 box_pos_y_(0), | |
| 33 box_speed_x_(kSpeed), | |
| 34 box_speed_y_(kSpeed) { | |
| 35 ScreenConfigurationChanged(); | |
| 36 } | |
| 37 | |
| 38 ScreenCapturerFake::~ScreenCapturerFake() { | |
| 39 } | |
| 40 | |
| 41 void ScreenCapturerFake::Start(Callback* callback) { | |
| 42 DCHECK(!callback_); | |
| 43 DCHECK(callback); | |
| 44 callback_ = callback; | |
| 45 } | |
| 46 | |
| 47 void ScreenCapturerFake::Capture(const webrtc::DesktopRegion& region) { | |
| 48 base::Time capture_start_time = base::Time::Now(); | |
| 49 | |
| 50 queue_.MoveToNextFrame(); | |
| 51 | |
| 52 if (!queue_.current_frame()) { | |
| 53 int buffer_size = size_.height() * bytes_per_row_; | |
| 54 webrtc::SharedMemory* shared_memory = | |
| 55 callback_->CreateSharedMemory(buffer_size); | |
| 56 scoped_ptr<webrtc::DesktopFrame> frame; | |
| 57 webrtc::DesktopSize frame_size(size_.width(), size_.height()); | |
| 58 if (shared_memory) { | |
| 59 frame.reset(new webrtc::SharedMemoryDesktopFrame( | |
| 60 frame_size, bytes_per_row_, shared_memory)); | |
| 61 } else { | |
| 62 frame.reset(new webrtc::BasicDesktopFrame(frame_size)); | |
| 63 } | |
| 64 queue_.ReplaceCurrentFrame(frame.release()); | |
| 65 } | |
| 66 | |
| 67 DCHECK(queue_.current_frame()); | |
| 68 GenerateImage(); | |
| 69 | |
| 70 queue_.current_frame()->mutable_updated_region()->SetRect( | |
| 71 webrtc::DesktopRect::MakeSize(size_)); | |
| 72 queue_.current_frame()->set_capture_time_ms( | |
| 73 (base::Time::Now() - capture_start_time).InMillisecondsRoundedUp()); | |
| 74 | |
| 75 callback_->OnCaptureCompleted(queue_.current_frame()->Share()); | |
| 76 } | |
| 77 | |
| 78 void ScreenCapturerFake::SetMouseShapeObserver( | |
| 79 MouseShapeObserver* mouse_shape_observer) { | |
| 80 DCHECK(!mouse_shape_observer_); | |
| 81 DCHECK(mouse_shape_observer); | |
| 82 mouse_shape_observer_ = mouse_shape_observer; | |
| 83 } | |
| 84 | |
| 85 bool ScreenCapturerFake::GetScreenList(ScreenList* screens) { | |
| 86 NOTIMPLEMENTED(); | |
| 87 return false; | |
| 88 } | |
| 89 | |
| 90 bool ScreenCapturerFake::SelectScreen(webrtc::ScreenId id) { | |
| 91 NOTIMPLEMENTED(); | |
| 92 return false; | |
| 93 } | |
| 94 | |
| 95 void ScreenCapturerFake::GenerateImage() { | |
| 96 webrtc::DesktopFrame* frame = queue_.current_frame(); | |
| 97 | |
| 98 const int kBytesPerPixel = webrtc::DesktopFrame::kBytesPerPixel; | |
| 99 | |
| 100 memset(frame->data(), 0xff, | |
| 101 size_.width() * size_.height() * kBytesPerPixel); | |
| 102 | |
| 103 uint8* row = frame->data() + | |
| 104 (box_pos_y_ * size_.width() + box_pos_x_) * kBytesPerPixel; | |
| 105 | |
| 106 box_pos_x_ += box_speed_x_; | |
| 107 if (box_pos_x_ + kBoxWidth >= size_.width() || box_pos_x_ == 0) | |
| 108 box_speed_x_ = -box_speed_x_; | |
| 109 | |
| 110 box_pos_y_ += box_speed_y_; | |
| 111 if (box_pos_y_ + kBoxHeight >= size_.height() || box_pos_y_ == 0) | |
| 112 box_speed_y_ = -box_speed_y_; | |
| 113 | |
| 114 // Draw rectangle with the following colors in its corners: | |
| 115 // cyan....yellow | |
| 116 // .............. | |
| 117 // blue.......red | |
| 118 for (int y = 0; y < kBoxHeight; ++y) { | |
| 119 for (int x = 0; x < kBoxWidth; ++x) { | |
| 120 int r = x * 255 / kBoxWidth; | |
| 121 int g = y * 255 / kBoxHeight; | |
| 122 int b = 255 - (x * 255 / kBoxWidth); | |
| 123 row[x * kBytesPerPixel] = r; | |
| 124 row[x * kBytesPerPixel + 1] = g; | |
| 125 row[x * kBytesPerPixel + 2] = b; | |
| 126 row[x * kBytesPerPixel + 3] = 0xff; | |
| 127 } | |
| 128 row += bytes_per_row_; | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 void ScreenCapturerFake::ScreenConfigurationChanged() { | |
| 133 size_.set(kWidth, kHeight); | |
| 134 queue_.Reset(); | |
| 135 bytes_per_row_ = size_.width() * webrtc::DesktopFrame::kBytesPerPixel; | |
| 136 } | |
| 137 | |
| 138 } // namespace remoting | |
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