mirror of
https://github.com/Blinue/Magpie.git
synced 2026-06-24 02:04:10 +00:00
331 lines
11 KiB
C++
331 lines
11 KiB
C++
#include "pch.h"
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#include "GraphicsCaptureFrameSource.h"
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#include "App.h"
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#include "StrUtils.h"
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#include <Windows.Graphics.DirectX.Direct3D11.interop.h>
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#include <winrt/Windows.Foundation.Metadata.h>
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#include "Utils.h"
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namespace winrt {
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using namespace Windows::Foundation::Metadata;
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}
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extern std::shared_ptr<spdlog::logger> logger;
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bool GraphicsCaptureFrameSource::Initialize() {
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App::GetInstance().SetErrorMsg(ErrorMessages::GRAPHICS_CAPTURE);
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// 只在 Win10 1903 及更新版本中可用
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const RTL_OSVERSIONINFOW& version = Utils::GetOSVersion();
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if (Utils::CompareVersion(version.dwMajorVersion, version.dwMinorVersion, version.dwBuildNumber, 10, 0, 18362) < 0) {
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SPDLOG_LOGGER_ERROR(logger, "当前操作系统无法使用 Graphics Capture");
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return false;
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}
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_d3dDC = App::GetInstance().GetRenderer().GetD3DDC();
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HRESULT hr;
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winrt::impl::com_ref<IGraphicsCaptureItemInterop> interop;
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try {
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if (!winrt::ApiInformation::IsTypePresent(L"Windows.Graphics.Capture.GraphicsCaptureSession")) {
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SPDLOG_LOGGER_ERROR(logger, "不存在 GraphicsCaptureSession API");
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return false;
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}
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if (!winrt::GraphicsCaptureSession::IsSupported()) {
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SPDLOG_LOGGER_ERROR(logger, "当前不支持 WinRT 捕获");
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return false;
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}
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hr = CreateDirect3D11DeviceFromDXGIDevice(
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App::GetInstance().GetRenderer().GetDXGIDevice().Get(),
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reinterpret_cast<::IInspectable**>(winrt::put_abi(_wrappedD3DDevice))
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);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 IDirect3DDevice 失败", hr));
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return false;
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}
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// 从窗口句柄获取 GraphicsCaptureItem
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interop = winrt::get_activation_factory<winrt::GraphicsCaptureItem, IGraphicsCaptureItemInterop>();
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if (!interop) {
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SPDLOG_LOGGER_ERROR(logger, "获取 IGraphicsCaptureItemInterop 失败");
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return false;
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}
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} catch (const winrt::hresult_error& e) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("初始化 WinRT 失败：{}", StrUtils::UTF16ToUTF8(e.message())));
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return false;
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}
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// 有两层回落：
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// 1. 首先使用常规的窗口捕获
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// 2. 如果失败，尝试设置源窗口样式，因为 WGC 只能捕获位于 Alt+Tab 列表中的窗口
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// 3. 如果再次失败，改为使用屏幕捕获
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if (!_CaptureFromWindow(interop)) {
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SPDLOG_LOGGER_INFO(logger, "窗口捕获失败，尝试设置源窗口样式");
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if (!_CaptureFromStyledWindow(interop)) {
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SPDLOG_LOGGER_INFO(logger, "窗口捕获失败，尝试使用屏幕捕获");
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if (!_CaptureFromMonitor(interop)) {
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SPDLOG_LOGGER_ERROR(logger, "屏幕捕获失败");
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return false;
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}
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}
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}
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try {
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// 创建帧缓冲池
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// 帧的尺寸和 _captureItem.Size() 不同
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_captureFramePool = winrt::Direct3D11CaptureFramePool::CreateFreeThreaded(
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_wrappedD3DDevice,
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winrt::DirectXPixelFormat::B8G8R8A8UIntNormalized,
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1, // 帧的缓存数量
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{ (int)_frameBox.right, (int)_frameBox.bottom } // 帧的尺寸为包含源窗口的最小尺寸
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);
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_captureSession = _captureFramePool.CreateCaptureSession(_captureItem);
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// 不捕获光标
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if (winrt::ApiInformation::IsPropertyPresent(
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L"Windows.Graphics.Capture.GraphicsCaptureSession",
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L"IsCursorCaptureEnabled"
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)) {
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// 从 v2004 开始提供
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_captureSession.IsCursorCaptureEnabled(false);
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} else {
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SPDLOG_LOGGER_INFO(logger, "当前系统无 IsCursorCaptureEnabled API");
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}
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// 不显示黄色边框
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if (winrt::ApiInformation::IsPropertyPresent(
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L"Windows.Graphics.Capture.GraphicsCaptureSession",
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L"IsBorderRequired"
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)) {
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// 从 Win10 v2104 开始提供
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// 先请求权限
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auto status = winrt::GraphicsCaptureAccess::RequestAccessAsync(winrt::GraphicsCaptureAccessKind::Borderless).get();
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if (status == decltype(status)::Allowed) {
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_captureSession.IsBorderRequired(false);
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} else {
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SPDLOG_LOGGER_INFO(logger, "IsCursorCaptureEnabled 失败");
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}
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} else {
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SPDLOG_LOGGER_INFO(logger, "当前系统无 IsBorderRequired API");
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}
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// 开始捕获
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_captureSession.StartCapture();
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} catch (const winrt::hresult_error& e) {
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SPDLOG_LOGGER_INFO(logger, fmt::format("Graphics Capture 失败：", StrUtils::UTF16ToUTF8(e.message())));
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return false;
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}
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D3D11_TEXTURE2D_DESC desc{};
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desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
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desc.Width = _frameBox.right - _frameBox.left;
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desc.Height = _frameBox.bottom - _frameBox.top;
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desc.MipLevels = 1;
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desc.ArraySize = 1;
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desc.SampleDesc.Count = 1;
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desc.SampleDesc.Quality = 0;
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desc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
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hr = App::GetInstance().GetRenderer().GetD3DDevice()->CreateTexture2D(&desc, nullptr, &_output);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 Texture2D 失败", hr));
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return false;
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}
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App::GetInstance().SetErrorMsg(ErrorMessages::GENERIC);
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SPDLOG_LOGGER_INFO(logger, "GraphicsCaptureFrameSource 初始化完成");
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return true;
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}
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FrameSourceBase::UpdateState GraphicsCaptureFrameSource::Update() {
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winrt::Direct3D11CaptureFrame frame = _captureFramePool.TryGetNextFrame();
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if (!frame) {
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// 缓冲池没有帧
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return UpdateState::Waiting;
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}
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// 从帧获取 IDXGISurface
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winrt::IDirect3DSurface d3dSurface = frame.Surface();
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winrt::com_ptr<::Windows::Graphics::DirectX::Direct3D11::IDirect3DDxgiInterfaceAccess> dxgiInterfaceAccess(
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d3dSurface.as<::Windows::Graphics::DirectX::Direct3D11::IDirect3DDxgiInterfaceAccess>()
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);
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ComPtr<ID3D11Texture2D> withFrame;
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HRESULT hr = dxgiInterfaceAccess->GetInterface(IID_PPV_ARGS(&withFrame));
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("从获取 IDirect3DSurface 获取 ID3D11Texture2D 失败", hr));
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return UpdateState::Error;
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}
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_d3dDC->CopySubresourceRegion(_output.Get(), 0, 0, 0, 0, withFrame.Get(), 0, &_frameBox);
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return UpdateState::NewFrame;
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}
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bool GraphicsCaptureFrameSource::_CaptureFromWindow(winrt::impl::com_ref<IGraphicsCaptureItemInterop> interop) {
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// DwmGetWindowAttribute 和 Graphics.Capture 无法应用于子窗口
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HWND hwndSrc = App::GetInstance().GetHwndSrc();
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// 包含边框的窗口尺寸
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RECT srcRect{};
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HRESULT hr = DwmGetWindowAttribute(hwndSrc, DWMWA_EXTENDED_FRAME_BOUNDS, &srcRect, sizeof(srcRect));
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("DwmGetWindowAttribute 失败", hr));
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return false;
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}
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RECT srcClientRect;
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if (!Utils::GetClientScreenRect(App::GetInstance().GetHwndSrcClient(), srcClientRect)) {
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SPDLOG_LOGGER_ERROR(logger, "GetClientScreenRect 失败");
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return false;
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}
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// 在源窗口存在 DPI 缩放时有时会有一像素的偏移（取决于窗口在屏幕上的位置）
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// 可能是 DwmGetWindowAttribute 的 bug
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_frameBox = {
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UINT(srcClientRect.left - srcRect.left),
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UINT(srcClientRect.top - srcRect.top),
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0,
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UINT(srcClientRect.right - srcRect.left),
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UINT(srcClientRect.bottom - srcRect.top),
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1
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};
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try {
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hr = interop->CreateForWindow(
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hwndSrc,
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winrt::guid_of<ABI::Windows::Graphics::Capture::IGraphicsCaptureItem>(),
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winrt::put_abi(_captureItem)
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);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 GraphicsCaptureItem 失败", hr));
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return false;
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}
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} catch (const winrt::hresult_error& e) {
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SPDLOG_LOGGER_INFO(logger, fmt::format("源窗口无法使用窗口捕获：", StrUtils::UTF16ToUTF8(e.message())));
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return false;
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}
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return true;
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}
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bool GraphicsCaptureFrameSource::_CaptureFromStyledWindow(winrt::impl::com_ref<IGraphicsCaptureItemInterop> interop) {
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HWND hwndSrc = App::GetInstance().GetHwndSrc();
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_srcWndStyle = GetWindowLongPtr(hwndSrc, GWL_EXSTYLE);
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if (_srcWndStyle == 0) {
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SPDLOG_LOGGER_ERROR(logger, MakeWin32ErrorMsg("GetWindowLongPtr 失败"));
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return false;
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}
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// 删除 WS_EX_TOOLWINDOW，添加 WS_EX_APPWINDOW 样式，确保源窗口可被 Alt+Tab 选中
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LONG_PTR newStyle = (_srcWndStyle & !WS_EX_TOOLWINDOW) | WS_EX_APPWINDOW;
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if (_srcWndStyle == newStyle) {
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// 如果源窗口已经可被 Alt+Tab 选中，则回落到屏幕捕获
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SPDLOG_LOGGER_INFO(logger, "源窗口无需改变样式");
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return false;
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}
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if (!SetWindowLongPtr(hwndSrc, GWL_EXSTYLE, newStyle)) {
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SPDLOG_LOGGER_ERROR(logger, MakeWin32ErrorMsg("SetWindowLongPtr 失败"));
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return false;
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}
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if (!_CaptureFromWindow(interop)) {
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SPDLOG_LOGGER_ERROR(logger, "改变样式后捕获窗口失败");
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// 还原源窗口样式
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SetWindowLongPtr(hwndSrc, GWL_EXSTYLE, _srcWndStyle);
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_srcWndStyle = 0;
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return false;
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}
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return true;
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}
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bool GraphicsCaptureFrameSource::_CaptureFromMonitor(winrt::impl::com_ref<IGraphicsCaptureItemInterop> interop) {
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// WDA_EXCLUDEFROMCAPTURE 只在 Win10 v2004 及更新版本中可用
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const RTL_OSVERSIONINFOW& version = Utils::GetOSVersion();
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if (Utils::CompareVersion(version.dwMajorVersion, version.dwMinorVersion, version.dwBuildNumber, 10, 0, 19041) < 0) {
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SPDLOG_LOGGER_ERROR(logger, "当前操作系统无法使用全屏捕获");
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return false;
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}
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// 使全屏窗口无法被捕获到
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if (!SetWindowDisplayAffinity(App::GetInstance().GetHwndHost(), WDA_EXCLUDEFROMCAPTURE)) {
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SPDLOG_LOGGER_ERROR(logger, MakeWin32ErrorMsg("SetWindowDisplayAffinity 失败"));
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return false;
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}
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HWND hwndSrc = App::GetInstance().GetHwndSrc();
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HMONITOR hMonitor = MonitorFromWindow(hwndSrc, MONITOR_DEFAULTTONEAREST);
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if (!hMonitor) {
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SPDLOG_LOGGER_ERROR(logger, MakeWin32ErrorMsg("MonitorFromWindow 失败"));
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return false;
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}
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MONITORINFO mi{};
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mi.cbSize = sizeof(mi);
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if (!GetMonitorInfo(hMonitor, &mi)) {
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SPDLOG_LOGGER_ERROR(logger, MakeWin32ErrorMsg("GetMonitorInfo 失败"));
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return false;
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}
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// 放在屏幕左上角而不是中间可以提高帧率，这里是为了和 DesktopDuplication 保持一致
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if (!_CenterWindowIfNecessary(hwndSrc, mi.rcWork)) {
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SPDLOG_LOGGER_ERROR(logger, "居中源窗口失败");
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return false;
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}
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RECT srcClientRect;
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if (!Utils::GetClientScreenRect(App::GetInstance().GetHwndSrcClient(), srcClientRect)) {
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SPDLOG_LOGGER_ERROR(logger, "GetClientScreenRect 失败");
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return false;
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}
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_frameBox = {
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UINT(srcClientRect.left - mi.rcMonitor.left),
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UINT(srcClientRect.top - mi.rcMonitor.top),
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0,
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UINT(srcClientRect.right - mi.rcMonitor.left),
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UINT(srcClientRect.bottom - mi.rcMonitor.top),
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1
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};
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try {
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HRESULT hr = interop->CreateForMonitor(
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hMonitor,
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winrt::guid_of<ABI::Windows::Graphics::Capture::IGraphicsCaptureItem>(),
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winrt::put_abi(_captureItem)
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);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 GraphicsCaptureItem 失败", hr));
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return false;
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}
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} catch (const winrt::hresult_error& e) {
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SPDLOG_LOGGER_INFO(logger, fmt::format("捕获屏幕失败：", StrUtils::UTF16ToUTF8(e.message())));
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return false;
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}
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return true;
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}
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GraphicsCaptureFrameSource::~GraphicsCaptureFrameSource() {
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if (_captureSession) {
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_captureSession.Close();
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}
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if (_captureFramePool) {
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_captureFramePool.Close();
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}
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// 还原源窗口样式
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if (_srcWndStyle) {
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SetWindowLongPtr(App::GetInstance().GetHwndSrc(), GWL_EXSTYLE, _srcWndStyle);
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}
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}
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