| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "remoting/test/frame_generator_util.h" |
| |
| #include "base/base_paths.h" |
| #include "base/files/file_util.h" |
| #include "base/path_service.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h" |
| #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" |
| #include "ui/gfx/codec/png_codec.h" |
| |
| namespace remoting { |
| namespace test { |
| |
| namespace { |
| const int kBarcodeCellWidth = 8; |
| const int kBarcodeCellHeight = 8; |
| const int kBarcodeBits = 10; |
| const int kBarcodeBlackThreshold = 85; |
| const int kBarcodeWhiteThreshold = 170; |
| } // namespace |
| |
| std::unique_ptr<webrtc::DesktopFrame> LoadDesktopFrameFromPng( |
| const char* name) { |
| base::FilePath file_path; |
| PathService::Get(base::DIR_SOURCE_ROOT, &file_path); |
| file_path = file_path.AppendASCII("remoting"); |
| file_path = file_path.AppendASCII("test"); |
| file_path = file_path.AppendASCII("data"); |
| file_path = file_path.AppendASCII(name); |
| |
| std::string file_content; |
| if (!base::ReadFileToString(file_path, &file_content)) |
| LOG(FATAL) << "Failed to read " << file_path.MaybeAsASCII() |
| << ". Please run remoting/test/data/download.sh"; |
| SkBitmap bitmap; |
| gfx::PNGCodec::Decode(reinterpret_cast<const uint8_t*>(file_content.data()), |
| file_content.size(), &bitmap); |
| std::unique_ptr<webrtc::DesktopFrame> frame(new webrtc::BasicDesktopFrame( |
| webrtc::DesktopSize(bitmap.width(), bitmap.height()))); |
| bitmap.copyPixelsTo(frame->data(), |
| frame->stride() * frame->size().height(), |
| frame->stride()); |
| return frame; |
| } |
| |
| void DrawRect(webrtc::DesktopFrame* frame, |
| webrtc::DesktopRect rect, |
| uint32_t color) { |
| for (int y = rect.top(); y < rect.bottom(); ++y) { |
| uint32_t* data = reinterpret_cast<uint32_t*>( |
| frame->GetFrameDataAtPos(webrtc::DesktopVector(rect.left(), y))); |
| for (int x = 0; x < rect.width(); ++x) { |
| data[x] = color; |
| } |
| } |
| } |
| |
| void DrawBarcode(int value, bool changed, webrtc::DesktopFrame* frame) { |
| CHECK(value < (1 << kBarcodeBits)); |
| for (int i = 0; i < kBarcodeBits; ++i) { |
| DrawRect(frame, webrtc::DesktopRect::MakeXYWH(i * kBarcodeCellWidth, 0, |
| kBarcodeCellWidth, |
| kBarcodeCellHeight), |
| (value & 1) ? 0xffffffff : 0xff000000); |
| value >>= 1; |
| } |
| if (changed) { |
| frame->mutable_updated_region()->AddRect(webrtc::DesktopRect::MakeXYWH( |
| 0, 0, kBarcodeCellWidth * kBarcodeBits, kBarcodeCellHeight)); |
| } |
| } |
| |
| int ReadBarcode(const webrtc::DesktopFrame& frame) { |
| int result = 0; |
| for (int i = kBarcodeBits - 1; i >= 0; --i) { |
| // Sample barcode in the center of the cell for each bit. |
| int x = i * kBarcodeCellWidth + kBarcodeCellWidth / 2; |
| int y = kBarcodeCellHeight / 2; |
| uint8_t* data = frame.GetFrameDataAtPos(webrtc::DesktopVector(x, y)); |
| int b = data[0]; |
| int g = data[1]; |
| int r = data[2]; |
| bool bit = 0; |
| if (b > kBarcodeWhiteThreshold && g > kBarcodeWhiteThreshold && |
| r > kBarcodeWhiteThreshold) { |
| bit = 1; |
| } else if (b < kBarcodeBlackThreshold && g < kBarcodeBlackThreshold && |
| r < kBarcodeBlackThreshold) { |
| bit = 0; |
| } else { |
| LOG(FATAL) << "Invalid barcode."; |
| } |
| result <<= 1; |
| if (bit) |
| result |= 1; |
| } |
| return result; |
| } |
| |
| } // namespace test |
| } // namespace remoting |