当然可以!DirectShow 是一种用于处理各种视频和音频流的开源库,而 IVideoWindow 和 Fullscreen 是 DirectShow 中用于实现视频窗口和全屏功能的类。您想要在您的 D3D 主曲面中写入这些类,可以通过以下步骤来实现:
#include <dshow.h>
class VideoWindow : public IBaseFilter {
public:
// Constructor and Destructor
VideoWindow() {}
virtual ~VideoWindow() {}
// IBaseFilter 接口实现
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppv) {
return E_NOINTERFACE;
}
virtual ULONG STDMETHODCALLTYPE AddRef() { return 0; }
virtual ULONG STDMETHODCALLTYPE Release() { return 0; }
// IVideoWindow 接口实现
virtual HRESULT STDMETHODCALLTYPE SetWindow(HWND hwnd) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE GetWindow(HWND *hwnd) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE SetTitle(LPCWSTR title) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE GetTitle(LPWSTR *title) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE ShowWindow(BOOL show) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE IsWindowVisible(BOOL *visible) { return S_OK; }
// Fullscreen 接口实现
virtual HRESULT STDMETHODCALLTYPE SetFullScreenMode(BOOL fullScreen) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE GetFullScreenMode(BOOL *fullScreen) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE ToggleFullScreenMode() { return S_OK; }
};
// Include the generated video window header file
#include "VideoWindow.h"
// Create a VideoWindow object and add it to the D3D11 device context
VideoWindow *videoWindow = new VideoWindow();
// Set the video window in the D3D11 device context
videoWindow->SetWindow(hWnd);
// Create a VideoWindow object and add it to the DirectShow filter graph
VideoWindow *videoWindow = new VideoWindow();
// Add the VideoWindow to the filter graph
hr = pFilterGraph->AddFilter(videoWindow, L"My Video Window");
通过这种方式,您可以使用 DirectShow IVideoWindow 和 Fullscreen 接口来实现视频窗口和全屏功能,并在您的 D3D11 设备上下文中使用这些功能。
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