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- src/si/vgpu-stream: in-guest vgpu producer built as a Windows cross-compiled target (if(WIN32)) - .gitea: release workflow — cross-build the agent and build/publish the deb against system vmie - cmake/makefile: resolve vmie from a source tree (LIBVMIE_PATH) or installed libvmie-dev
53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include "geometry.h"
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#include "stream.h" /* vgpu_publish_geometry */
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/* GetDpiForMonitor lives in Shcore.dll (per-monitor DPI awareness API). Loaded dynamically so
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* the binary does not hard-depend on it; absence degrades dpi to "unknown" (0). */
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typedef HRESULT (WINAPI *GetDpiForMonitor_t)(HMONITOR, int /*MDT_*/, UINT*, UINT*);
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#define VGPU_MDT_EFFECTIVE_DPI 0
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static UINT monitor_dpi(HMONITOR mon) {
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static GetDpiForMonitor_t fn = NULL;
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static int tried = 0;
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if (!tried) {
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HMODULE lib = LoadLibraryA("Shcore.dll");
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if (lib) fn = (GetDpiForMonitor_t)(void*)GetProcAddress(lib, "GetDpiForMonitor");
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tried = 1;
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}
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if (!fn || !mon) return 0u;
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UINT dx = 0, dy = 0;
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if (fn(mon, VGPU_MDT_EFFECTIVE_DPI, &dx, &dy) != S_OK || dx == 0u)
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return 0u;
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return dx;
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}
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static uint32_t monitor_refresh_mhz(HMONITOR mon) {
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MONITORINFOEXW mi; mi.cbSize = sizeof mi;
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if (!mon || !GetMonitorInfoW(mon, (MONITORINFO*)&mi))
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return 0u;
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DEVMODEW dm; ZeroMemory(&dm, sizeof dm); dm.dmSize = sizeof dm;
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if (!EnumDisplaySettingsW(mi.szDevice, ENUM_CURRENT_SETTINGS, &dm))
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return 0u;
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if (dm.dmDisplayFrequency <= 1u) /* 0/1 = hardware default, not a real rate */
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return 0u;
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return (uint32_t)dm.dmDisplayFrequency * 1000u; /* whole Hz -> milli-Hz */
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}
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void geometry_sample_and_publish(vgpu_ctx* ctx, int32_t cap_x, int32_t cap_y) {
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int32_t virt_x = (int32_t)GetSystemMetrics(SM_XVIRTUALSCREEN);
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int32_t virt_y = (int32_t)GetSystemMetrics(SM_YVIRTUALSCREEN);
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uint32_t virt_w = (uint32_t)GetSystemMetrics(SM_CXVIRTUALSCREEN);
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uint32_t virt_h = (uint32_t)GetSystemMetrics(SM_CYVIRTUALSCREEN);
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POINT origin = { cap_x, cap_y };
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HMONITOR mon = MonitorFromPoint(origin, MONITOR_DEFAULTTOPRIMARY);
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uint32_t dpi = monitor_dpi(mon);
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uint32_t refresh = monitor_refresh_mhz(mon);
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vgpu_publish_geometry(&ctx->view, virt_x, virt_y, virt_w, virt_h,
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cap_x, cap_y, dpi, refresh);
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}
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