增加扩展屏的框架

demo/windows_sender/IddBridge.h

@@ -0,0 +1,64 @@
+#pragma once
+
+#include <d3d11.h>
+#include <wrl/client.h>
+#include <windows.h>
+#include <cstdint>
+
+using Microsoft::WRL::ComPtr;
+
+struct IddSharedHeader {
+    uint32_t width;
+    uint32_t height;
+    uint32_t format;   // 0 = BGRA32
+    uint32_t stride;   // bytes per row
+    uint64_t timestamp;
+    uint32_t frameId;
+    uint32_t dataSize;
+};
+
+class IddBridge {
+public:
+    IddBridge();
+    ~IddBridge();
+
+    bool Initialize();
+    bool CaptureFrame(ComPtr<ID3D11Texture2D>& texture);
+    void ReleaseFrame();
+    ID3D11Device* GetDevice() const { return device_.Get(); }
+    ID3D11DeviceContext* GetContext() const { return context_.Get(); }
+
+private:
+    bool EnsureTexture(int width, int height);
+
+    ComPtr<ID3D11Device> device_;
+    ComPtr<ID3D11DeviceContext> context_;
+    ComPtr<ID3D11Texture2D> gpuTexture_;
+    bool frame_acquired_ = false;
+
+    HANDLE hMap_ = nullptr;
+    HANDLE hReadyEvent_ = nullptr;
+    HANDLE hConsumedEvent_ = nullptr;
+    uint8_t* shared_ = nullptr;
+    size_t shared_size_ = 0;
+    int tex_width_ = 0;
+    int tex_height_ = 0;
+};
+
+class IddProducer {
+public:
+    IddProducer();
+    ~IddProducer();
+
+    bool Initialize();
+    // Submit a frame. Data should be BGRA32.
+    bool SubmitFrame(const void* data, uint32_t width, uint32_t height, uint32_t stride);
+
+private:
+    HANDLE hMap_ = nullptr;
+    HANDLE hReadyEvent_ = nullptr;
+    HANDLE hConsumedEvent_ = nullptr;
+    uint8_t* shared_ = nullptr;
+    size_t shared_size_ = 0;
+    uint32_t frameId_ = 0;
+};