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[feat] improve secure desktop capture by streaming latest frames through shared memory

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This commit is contained in:
dijunkun
2026-05-26 01:28:12 +08:00
parent 82c0cbbad4
commit 52b894fe0e
4 changed files with 715 additions and 27 deletions
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src/screen_capturer/windows/screen_capturer_win.h
+26 -1
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@@ -10,6 +10,7 @@
#include <Windows.h>
#include <atomic>
#include <cstdint>
#include <memory>
#include <mutex>
#include <thread>
@@ -59,6 +60,18 @@ class ScreenCapturerWin : public ScreenCapturer {
int initial_monitor_index_ = 0;
std::atomic<bool> secure_desktop_capture_active_{false};
std::thread secure_capture_thread_;
HANDLE secure_frame_mapping_ = nullptr;
HANDLE secure_frame_ready_event_ = nullptr;
uint8_t* secure_frame_view_ = nullptr;
size_t secure_frame_view_size_ = 0;
DWORD secure_shared_session_id_ = 0xFFFFFFFF;
int secure_shared_left_ = 0;
int secure_shared_top_ = 0;
int secure_shared_width_ = 0;
int secure_shared_height_ = 0;
int secure_shared_fps_ = 0;
bool secure_shared_show_cursor_ = true;
bool secure_shared_capture_started_ = false;
void BuildCanonicalFromImpl();
void RebuildAliasesFromImpl();
@@ -66,6 +79,18 @@ class ScreenCapturerWin : public ScreenCapturer {
void SecureDesktopCaptureLoop();
bool GetCurrentCaptureRegion(int* left, int* top, int* width, int* height,
std::string* display_name);
bool StartSecureDesktopSharedCapture(DWORD session_id, int left, int top,
int width, int height,
bool show_cursor, int fps,
std::string* error_out);
void StopSecureDesktopSharedCapture(DWORD session_id);
bool OpenSecureDesktopSharedFrame(DWORD session_id, size_t min_size,
std::string* error_out);
bool ReadSecureDesktopSharedFrame(DWORD wait_ms,
std::vector<uint8_t>* nv12_frame_out,
int* width_out, int* height_out,
std::string* error_out);
void CloseSecureDesktopSharedFrame();
};
} // namespace crossdesk
#endif
#endif