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wcap.c
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wcap.c
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#include "wcap.h"
#include "wcap_config.h"
#include "wcap_audio_capture.h"
#include "wcap_screen_capture.h"
#include "wcap_encoder.h"
#include <dxgi1_6.h>
#include <d3d11.h>
#include <dwmapi.h>
#include <shlobj.h>
#include <shlwapi.h>
#include <shellapi.h>
#include <windowsx.h>
#pragma comment (lib, "ntdll")
#pragma comment (lib, "kernel32")
#pragma comment (lib, "user32")
#pragma comment (lib, "gdi32")
#pragma comment (lib, "msimg32")
#pragma comment (lib, "dxgi")
#pragma comment (lib, "d3dcompiler")
#pragma comment (lib, "d3d11")
#pragma comment (lib, "dwmapi")
#pragma comment (lib, "shell32")
#pragma comment (lib, "shlwapi")
#pragma comment (lib, "mfplat")
#pragma comment (lib, "mfuuid")
#pragma comment (lib, "mfreadwrite")
#pragma comment (lib, "evr")
#pragma comment (lib, "strmiids")
#pragma comment (lib, "ksuser")
#pragma comment (lib, "mmdevapi")
#pragma comment (lib, "ole32")
#pragma comment (lib, "wmcodecdspuuid")
#pragma comment (lib, "avrt")
#pragma comment (lib, "uxtheme")
#pragma comment (lib, "OneCore")
#pragma comment (lib, "CoreMessaging")
#if defined(_M_AMD64)
// this is needed to be able to use Nvidia Media Foundation encoders on Optimus systems
__declspec(dllexport) DWORD NvOptimusEnablement = 1;
#endif
#define WM_WCAP_ALREADY_RUNNING (WM_USER+1)
#define WM_WCAP_STOP_CAPTURE (WM_USER+2)
#define WM_WCAP_TRAY_TITLE (WM_USER+3)
#define WM_WCAP_COMMAND (WM_USER+4)
#define WCAP_AUDIO_CAPTURE_TIMER 1
#define WCAP_AUDIO_CAPTURE_INTERVAL 100 // msec
#define WCAP_VIDEO_UPDATE_TIMER 2
#define WCAP_VIDEO_UPDATE_INTERVAL 100 // msec
#define CMD_WCAP 1
#define CMD_QUIT 2
#define CMD_SETTINGS 3
#define HOT_RECORD_WINDOW 1
#define HOT_RECORD_MONITOR 2
#define HOT_RECORD_REGION 3
#define WCAP_RESIZE_NONE 0
#define WCAP_RESIZE_TL 1
#define WCAP_RESIZE_T 2
#define WCAP_RESIZE_TR 3
#define WCAP_RESIZE_L 4
#define WCAP_RESIZE_M 5
#define WCAP_RESIZE_R 6
#define WCAP_RESIZE_BL 7
#define WCAP_RESIZE_B 8
#define WCAP_RESIZE_BR 9
#define WCAP_UI_FONT L"Segoe UI"
#define WCAP_UI_FONT_SIZE 16
#define WCAP_RECT_BORDER 2
// constants
static WCHAR gConfigPath[MAX_PATH];
static LARGE_INTEGER gTickFreq;
static HICON gIcon1;
static HICON gIcon2;
static UINT WM_TASKBARCREATED;
static HCURSOR gCursorArrow;
static HCURSOR gCursorClick;
static HCURSOR gCursorResize[10];
static HFONT gFont;
static HFONT gFontBold;
// recording state
static BOOL gRecordingStarted;
static BOOL gRecording;
static DWORD gRecordingLimitFramerate;
static DWORD gRecordingDroppedFrames;
static UINT64 gRecordingLastFrame;
static UINT64 gRecordingNextEncode;
static UINT64 gRecordingNextTooltip;
static EXECUTION_STATE gRecordingState;
static WCHAR gRecordingPath[MAX_PATH];
// when selecting rectangle to record
static HMONITOR gRectMonitor;
static HDC gRectContext;
static HDC gRectDarkContext;
static HBITMAP gRectBitmap;
static HBITMAP gRectDarkBitmap;
static DWORD gRectWidth;
static DWORD gRectHeight;
static BOOL gRectSelected;
static POINT gRectSelection[2];
static POINT gRectMousePos;
static int gRectResize;
static int gRectSetSize[2];
static BOOL gRectSetSizeClick;
// globals
static HWND gWindow;
static Config gConfig;
static AudioCapture gAudio;
static ScreenCapture gCapture;
static Encoder gEncoder;
static void ShowNotification(LPCWSTR Message, LPCWSTR Title, DWORD Flags)
{
NOTIFYICONDATAW Data =
{
.cbSize = sizeof(Data),
.hWnd = gWindow,
.uFlags = NIF_INFO | NIF_TIP,
.dwInfoFlags = Flags, // NIIF_INFO, NIIF_WARNING, NIIF_ERROR
};
StrCpyNW(Data.szTip, WCAP_TITLE, _countof(Data.szTip));
StrCpyNW(Data.szInfo, Message, _countof(Data.szInfo));
StrCpyNW(Data.szInfoTitle, Title ? Title : WCAP_TITLE, _countof(Data.szInfoTitle));
Shell_NotifyIconW(NIM_MODIFY, &Data);
}
static void UpdateTrayTitle(LPCWSTR Title)
{
NOTIFYICONDATAW Data =
{
.cbSize = sizeof(Data),
.hWnd = gWindow,
.uFlags = NIF_TIP,
};
StrCpyNW(Data.szTip, Title, _countof(Data.szTip));
Shell_NotifyIconW(NIM_MODIFY, &Data);
}
static void UpdateTrayIcon(HICON Icon)
{
NOTIFYICONDATAW Data =
{
.cbSize = sizeof(Data),
.hWnd = gWindow,
.uFlags = NIF_ICON,
.hIcon = Icon,
};
Shell_NotifyIconW(NIM_MODIFY, &Data);
}
static void AddTrayIcon(HWND Window)
{
NOTIFYICONDATAW Data =
{
.cbSize = sizeof(Data),
.hWnd = Window,
.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP,
.uCallbackMessage = WM_WCAP_COMMAND,
.hIcon = gIcon1,
};
StrCpyNW(Data.szTip, WCAP_TITLE, _countof(Data.szTip));
Shell_NotifyIconW(NIM_ADD, &Data);
}
static void RemoveTrayIcon(HWND Window)
{
NOTIFYICONDATAW Data =
{
.cbSize = sizeof(Data),
.hWnd = Window,
};
Shell_NotifyIconW(NIM_DELETE, &Data);
}
static void ShowFileInFolder(LPCWSTR Filename)
{
SFGAOF Flags;
PIDLIST_ABSOLUTE List;
if (Filename[0] && SUCCEEDED(SHParseDisplayName(Filename, NULL, &List, 0, &Flags)))
{
HR(SHOpenFolderAndSelectItems(List, 0, NULL, 0));
CoTaskMemFree(List);
}
}
static void StartRecording(ID3D11Device* Device, HWND Window)
{
SYSTEMTIME Time;
GetLocalTime(&Time);
WCHAR Filename[256];
StrFormat(Filename, L"%04u%02u%02u_%02u%02u%02u.mp4", Time.wYear, Time.wMonth, Time.wDay, Time.wHour, Time.wMinute, Time.wSecond);
StrCpyW(gRecordingPath, gConfig.OutputFolder);
PathAppendW(gRecordingPath, Filename);
DWM_TIMING_INFO Info = { .cbSize = sizeof(Info) };
HR(DwmGetCompositionTimingInfo(NULL, &Info));
DWORD FramerateNum = Info.rateCompose.uiNumerator;
DWORD FramerateDen = Info.rateCompose.uiDenominator;
if (gConfig.VideoMaxFramerate > 0 && gConfig.VideoMaxFramerate * FramerateDen < FramerateNum)
{
// limit rate only if max framerate is specified and it is lower than compositor framerate
gRecordingLimitFramerate = gConfig.VideoMaxFramerate;
FramerateNum = gConfig.VideoMaxFramerate;
FramerateDen = 1;
}
else
{
gRecordingLimitFramerate = 0;
}
EncoderConfig EncConfig =
{
.Width = gCapture.Rect.right - gCapture.Rect.left,
.Height = gCapture.Rect.bottom - gCapture.Rect.top,
.FramerateNum = FramerateNum,
.FramerateDen = FramerateDen,
.Config = &gConfig,
};
if (gConfig.CaptureAudio)
{
HWND ApplicationWindow = gConfig.ApplicationLocalAudio && AudioCapture_CanCaptureApplicationLocal() ? Window : NULL;
if (!AudioCapture_Start(&gAudio, ApplicationWindow))
{
ShowNotification(L"Cannot capture audio!", L"Cannot Start Recording", NIIF_WARNING);
ScreenCapture_Stop(&gCapture);
ID3D11Device_Release(Device);
return;
}
EncConfig.AudioFormat = gAudio.Format;
}
if (!Encoder_Start(&gEncoder, Device, gRecordingPath, &EncConfig))
{
if (gConfig.CaptureAudio)
{
AudioCapture_Stop(&gAudio);
}
ScreenCapture_Stop(&gCapture);
ID3D11Device_Release(Device);
return;
}
gRecordingNextTooltip = 0;
gRecordingNextEncode = 0;
gRecordingLastFrame = 0;
gRecordingDroppedFrames = 0;
ScreenCapture_Start(&gCapture, gConfig.MouseCursor, gConfig.ShowRecordingBorder);
if (gConfig.CaptureAudio)
{
SetTimer(gWindow, WCAP_AUDIO_CAPTURE_TIMER, WCAP_AUDIO_CAPTURE_INTERVAL, NULL);
}
SetTimer(gWindow, WCAP_VIDEO_UPDATE_TIMER, WCAP_VIDEO_UPDATE_INTERVAL, NULL);
UpdateTrayIcon(gIcon2);
gRecordingState = SetThreadExecutionState(ES_CONTINUOUS | ES_DISPLAY_REQUIRED);
gRecording = TRUE;
ID3D11Device_Release(Device);
}
static void EncodeCapturedAudio(void)
{
if (gEncoder.StartTime == 0)
{
// we don't know when first video frame starts yet
return;
}
AudioCaptureData Data;
while (AudioCapture_GetData(&gAudio, &Data, gEncoder.StartTime))
{
UINT32 FramesToEncode = (UINT32)Data.Count;
if (Data.Time < gEncoder.StartTime)
{
const UINT32 SampleRate = gAudio.Format->nSamplesPerSec;
const UINT32 BytesPerFrame = gAudio.Format->nBlockAlign;
// figure out how much time (100nsec units) and frame count to skip from current buffer
UINT64 TimeToSkip = gEncoder.StartTime - Data.Time;
UINT32 FramesToSkip = (UINT32)((TimeToSkip * SampleRate - 1) / MF_UNITS_PER_SECOND + 1);
if (FramesToSkip < FramesToEncode)
{
// need to skip part of captured data
Data.Time += FramesToSkip * MF_UNITS_PER_SECOND / SampleRate;
FramesToEncode -= FramesToSkip;
if (Data.Samples)
{
Data.Samples = (BYTE*)Data.Samples + FramesToSkip * BytesPerFrame;
}
}
else
{
// need to skip all of captured data
FramesToEncode = 0;
}
}
if (FramesToEncode != 0)
{
Assert(Data.Time >= gEncoder.StartTime);
Encoder_NewSamples(&gEncoder, Data.Samples, FramesToEncode, Data.Time, gTickFreq.QuadPart);
}
AudioCapture_ReleaseData(&gAudio, &Data);
}
}
static void StopRecording(void)
{
gRecording = FALSE;
SetThreadExecutionState(gRecordingState);
if (gConfig.CaptureAudio)
{
KillTimer(gWindow, WCAP_AUDIO_CAPTURE_TIMER);
AudioCapture_Flush(&gAudio);
EncodeCapturedAudio();
AudioCapture_Stop(&gAudio);
}
KillTimer(gWindow, WCAP_VIDEO_UPDATE_TIMER);
ScreenCapture_Stop(&gCapture);
Encoder_Stop(&gEncoder);
if (gConfig.OpenFolder)
{
ShowFileInFolder(gRecordingPath);
}
SetWindowPos(gWindow, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_HIDEWINDOW | SWP_NOMOVE | SWP_NOSIZE);
SetWindowLongW(gWindow, GWL_EXSTYLE, 0);
UpdateTrayIcon(gIcon1);
UpdateTrayTitle(WCAP_TITLE);
}
static ID3D11Device* CreateDevice(void)
{
IDXGIAdapter* Adapter = NULL;
if (gConfig.HardwareEncoder)
{
IDXGIFactory* Factory;
if (SUCCEEDED(CreateDXGIFactory(&IID_IDXGIFactory, (void**)&Factory)))
{
IDXGIFactory6* Factory6;
if (SUCCEEDED(IDXGIFactory_QueryInterface(Factory, &IID_IDXGIFactory6, (void**)&Factory6)))
{
DXGI_GPU_PREFERENCE Preference = gConfig.HardwarePreferIntegrated ? DXGI_GPU_PREFERENCE_MINIMUM_POWER : DXGI_GPU_PREFERENCE_HIGH_PERFORMANCE;
if (FAILED(IDXGIFactory6_EnumAdapterByGpuPreference(Factory6, 0, Preference, &IID_IDXGIAdapter, &Adapter)))
{
// just to be safe
Adapter = NULL;
}
IDXGIFactory6_Release(Factory6);
}
IDXGIFactory_Release(Factory);
}
}
ID3D11Device* Device;
UINT flags = 0;
#ifndef NDEBUG
flags |= D3D11_CREATE_DEVICE_DEBUG;
#endif
// if adapter is selected then driver type must be unknown
D3D_DRIVER_TYPE Driver = Adapter ? D3D_DRIVER_TYPE_UNKNOWN : D3D_DRIVER_TYPE_HARDWARE;
if (FAILED(D3D11CreateDevice(Adapter, Driver, NULL, flags, (D3D_FEATURE_LEVEL[]) { D3D_FEATURE_LEVEL_11_0 }, 1, D3D11_SDK_VERSION, &Device, NULL, NULL)))
{
ShowNotification(L"Cannot to create D3D11 device!", L"Error", NIIF_ERROR);
Device = NULL;
}
if (Adapter)
{
IDXGIAdapter_Release(Adapter);
}
if (flags & D3D11_CREATE_DEVICE_DEBUG)
{
ID3D11InfoQueue* Info;
if (SUCCEEDED(ID3D11Device_QueryInterface(Device, &IID_ID3D11InfoQueue, &Info)))
{
ID3D11InfoQueue_SetBreakOnSeverity(Info, D3D11_MESSAGE_SEVERITY_CORRUPTION, TRUE);
ID3D11InfoQueue_SetBreakOnSeverity(Info, D3D11_MESSAGE_SEVERITY_ERROR, TRUE);
ID3D11InfoQueue_Release(Info);
}
}
return Device;
}
static void CaptureWindow(void)
{
HWND Window = GetForegroundWindow();
if (Window == NULL)
{
ShowNotification(L"No window is selected!", L"Cannot Start Recording", NIIF_WARNING);
return;
}
// figure out who is owner of child window if somehow child window is selected (happens for fancy winamp skins)
HWND Parent = GetParent(Window);
while (Parent != NULL)
{
Window = Parent;
Parent = GetParent(Window);
}
DWORD Affinity;
BOOL Success = GetWindowDisplayAffinity(Window, &Affinity);
Assert(Success);
if (Affinity != WDA_NONE)
{
ShowNotification(L"Window is excluded from capture!", L"Cannot Start Recording", NIIF_WARNING);
return;
}
LONG ExStyle = GetWindowLongW(Window, GWL_EXSTYLE);
if (ExStyle & WS_EX_TOOLWINDOW)
{
ShowNotification(L"Cannot capture toolbar window!", L"Cannot Start Recording", NIIF_WARNING);
return;
}
ID3D11Device* Device = CreateDevice();
if (!Device)
{
return;
}
if (!ScreenCapture_CreateForWindow(&gCapture, Device, Window, gConfig.OnlyClientArea, !gConfig.KeepRoundedWindowCorners))
{
ID3D11Device_Release(Device);
ShowNotification(L"Cannot record selected window!", L"Error", NIIF_WARNING);
return;
}
StartRecording(Device, Window);
}
static void CaptureMonitor(void)
{
POINT Mouse;
GetCursorPos(&Mouse);
HMONITOR Monitor = MonitorFromPoint(Mouse, MONITOR_DEFAULTTONULL);
if (Monitor == NULL)
{
ShowNotification(L"Unknown monitor!", L"Cannot Start Recording", NIIF_WARNING);
return;
}
ID3D11Device* Device = CreateDevice();
if (!Device)
{
return;
}
if (!ScreenCapture_CreateForMonitor(&gCapture, Device, Monitor, NULL))
{
ShowNotification(L"Cannot record selected monitor!", L"Error", NIIF_WARNING);
return;
}
StartRecording(Device, NULL);
}
static void CaptureRegionInit(void)
{
POINT Mouse;
GetCursorPos(&Mouse);
HMONITOR Monitor = MonitorFromPoint(Mouse, MONITOR_DEFAULTTONULL);
if (Monitor == NULL)
{
ShowNotification(L"Unknown monitor!", L"Cannot Start Recording", NIIF_WARNING);
return;
}
MONITORINFOEXW Info = { .cbSize = sizeof(Info) };
GetMonitorInfoW(Monitor, (LPMONITORINFO)&Info);
HDC DeviceContext = CreateDCW(L"DISPLAY", Info.szDevice, NULL, NULL);
if (DeviceContext == NULL)
{
ShowNotification(L"Error getting HDC of monitor!", L"Cannot Start Recording", NIIF_WARNING);
return;
}
DWORD Width = Info.rcMonitor.right - Info.rcMonitor.left;
DWORD Height = Info.rcMonitor.bottom - Info.rcMonitor.top;
// capture image from desktop
HDC MemoryContext = CreateCompatibleDC(DeviceContext);
Assert(MemoryContext);
HBITMAP MemoryBitmap = CreateCompatibleBitmap(DeviceContext, Width, Height);
Assert(MemoryBitmap);
SelectObject(MemoryContext, MemoryBitmap);
BitBlt(MemoryContext, 0, 0, Width, Height, DeviceContext, 0, 0, SRCCOPY);
// prepare darkened image by doing alpha blend
HDC MemoryDarkContext = CreateCompatibleDC(DeviceContext);
Assert(MemoryDarkContext);
HBITMAP MemoryDarkBitmap = CreateCompatibleBitmap(DeviceContext, Width, Height);
Assert(MemoryDarkBitmap);
BLENDFUNCTION Blend =
{
.BlendOp = AC_SRC_OVER,
.SourceConstantAlpha = 0x40,
};
SelectObject(MemoryDarkContext, MemoryDarkBitmap);
AlphaBlend(MemoryDarkContext, 0, 0, Width, Height, MemoryContext, 0, 0, Width, Height, Blend);
// done
DeleteDC(DeviceContext);
gRectMonitor = Monitor;
gRectContext = MemoryContext;
gRectDarkContext = MemoryDarkContext;
gRectBitmap = MemoryBitmap;
gRectDarkBitmap = MemoryDarkBitmap;
gRectWidth = Width;
gRectHeight = Height;
gRectSelected = FALSE;
gRectResize = WCAP_RESIZE_NONE;
gRectSetSize[0] = gRectSetSize[1] = 0;
gRectSetSizeClick = FALSE;
SetCursor(gCursorResize[WCAP_RESIZE_NONE]);
SetWindowPos(gWindow, HWND_TOPMOST, Info.rcMonitor.left, Info.rcMonitor.top, Width, Height, SWP_SHOWWINDOW);
SetForegroundWindow(gWindow);
InvalidateRect(gWindow, NULL, FALSE);
}
static void CaptureRegionDone(void)
{
ShowWindow(gWindow, SW_HIDE);
SetCursor(gCursorArrow);
ReleaseCapture();
if (gRectContext)
{
DeleteDC(gRectContext);
gRectContext = NULL;
DeleteObject(gRectBitmap);
gRectBitmap = NULL;
DeleteDC(gRectDarkContext);
gRectDarkContext = NULL;
DeleteObject(gRectDarkBitmap);
gRectDarkBitmap = NULL;
}
}
static void CaptureRegion(void)
{
CaptureRegionDone();
MONITORINFO Info = { .cbSize = sizeof(Info) };
GetMonitorInfoW(gRectMonitor, &Info);
RECT Rect =
{
.left = gRectSelection[0].x,
.right = gRectSelection[1].x,
.top = gRectSelection[0].y,
.bottom = gRectSelection[1].y,
};
LONG ExStyle = WS_EX_LAYERED | WS_EX_TRANSPARENT;
SetWindowLongW(gWindow, GWL_EXSTYLE, ExStyle);
SetLayeredWindowAttributes(gWindow, RGB(255, 0, 255), 0, LWA_COLORKEY);
int X = Info.rcMonitor.left + Rect.left - (WCAP_RECT_BORDER + 1);
int Y = Info.rcMonitor.top + Rect.top - (WCAP_RECT_BORDER + 1);
int W = Rect.right - Rect.left + 2 * (WCAP_RECT_BORDER + 1);
int H = Rect.bottom - Rect.top + 2 * (WCAP_RECT_BORDER + 1);
SetWindowPos(gWindow, HWND_TOPMOST, X, Y, W, H, SWP_SHOWWINDOW);
InvalidateRect(gWindow, NULL, FALSE);
ID3D11Device* Device = CreateDevice();
if (!Device)
{
return;
}
if (!ScreenCapture_CreateForMonitor(&gCapture, Device, gRectMonitor, &Rect))
{
ShowNotification(L"Cannot record monitor!", L"Error", NIIF_WARNING);
return;
}
StartRecording(Device, NULL);
}
static int GetPointResize(int X, int Y)
{
int BorderX = GetSystemMetrics(SM_CXSIZEFRAME);
int BorderY = GetSystemMetrics(SM_CYSIZEFRAME);
int X0 = min(gRectSelection[0].x, gRectSelection[1].x);
int Y0 = min(gRectSelection[0].y, gRectSelection[1].y);
int X1 = max(gRectSelection[0].x, gRectSelection[1].x);
int Y1 = max(gRectSelection[0].y, gRectSelection[1].y);
POINT P = { X, Y };
RECT TL = { X0 - BorderX, Y0 - BorderY, X0 + BorderX, Y0 + BorderY };
if (PtInRect(&TL, P)) return WCAP_RESIZE_TL;
RECT TR = { X1 - BorderX, Y0 - BorderY, X1 + BorderX, Y0 + BorderY };
if (PtInRect(&TR, P)) return WCAP_RESIZE_TR;
RECT BL = { X0 - BorderX, Y1 - BorderY, X0 + BorderX, Y1 + BorderY };
if (PtInRect(&BL, P)) return WCAP_RESIZE_BL;
RECT BR = { X1 - BorderX, Y1 - BorderY, X1 + BorderX, Y1 + BorderY };
if (PtInRect(&BR, P)) return WCAP_RESIZE_BR;
RECT T = { X0, Y0 - BorderY, X1, Y0 + BorderY };
if (PtInRect(&T, P)) return WCAP_RESIZE_T;
RECT B = { X0, Y1 - BorderY, X1, Y1 + BorderY };
if (PtInRect(&B, P)) return WCAP_RESIZE_B;
RECT L = { X0 - BorderX, Y0, X0 + BorderX, Y1 };
if (PtInRect(&L, P)) return WCAP_RESIZE_L;
RECT R = { X1 - BorderX, Y0, X1 + BorderX, Y1 };
if (PtInRect(&R, P)) return WCAP_RESIZE_R;
RECT M = { X0, Y0, X1, Y1 };
if (PtInRect(&M, P)) return WCAP_RESIZE_M;
return WCAP_RESIZE_NONE;
}
void DisableHotKeys(void)
{
UnregisterHotKey(gWindow, HOT_RECORD_MONITOR);
UnregisterHotKey(gWindow, HOT_RECORD_WINDOW);
UnregisterHotKey(gWindow, HOT_RECORD_REGION);
}
BOOL EnableHotKeys(void)
{
BOOL Success = TRUE;
if (gConfig.ShortcutMonitor)
{
Success = Success && RegisterHotKey(gWindow, HOT_RECORD_MONITOR, HOT_GET_MOD(gConfig.ShortcutMonitor), HOT_GET_KEY(gConfig.ShortcutMonitor));
}
if (gConfig.ShortcutWindow)
{
Success = Success && RegisterHotKey(gWindow, HOT_RECORD_WINDOW, HOT_GET_MOD(gConfig.ShortcutWindow), HOT_GET_KEY(gConfig.ShortcutWindow));
}
if (gConfig.ShortcutRegion)
{
Success = Success && RegisterHotKey(gWindow, HOT_RECORD_REGION, HOT_GET_MOD(gConfig.ShortcutRegion), HOT_GET_KEY(gConfig.ShortcutRegion));
}
return Success;
}
static void AdjustRectSizeMultipleOf2(int Adjust, int Ref)
{
int W = gRectSelection[Ref].x - gRectSelection[Adjust].x;
W = (W + (W > 0)) & ~1;
gRectSelection[Adjust].x = gRectSelection[Ref].x - W;
int H = gRectSelection[Ref].y - gRectSelection[Adjust].y;
H = (H + (H > 0)) & ~1;
gRectSelection[Adjust].y = gRectSelection[Ref].y - H;
}
static LRESULT CALLBACK WindowProc(HWND Window, UINT Message, WPARAM WParam, LPARAM LParam)
{
if (Message == WM_CREATE)
{
HR(BufferedPaintInit());
AddTrayIcon(Window);
return 0;
}
else if (Message == WM_DESTROY)
{
if (gRecording)
{
StopRecording();
}
RemoveTrayIcon(Window);
PostQuitMessage(0);
return 0;
}
else if (Message == WM_CLOSE)
{
if (gRectContext)
{
CaptureRegionDone();
}
return 0;
}
else if (Message == WM_ACTIVATEAPP)
{
if (gRectContext)
{
if (WParam == FALSE)
{
CaptureRegionDone();
return 0;
}
}
}
else if (Message == WM_KEYDOWN)
{
if (gRectContext)
{
if (WParam == VK_ESCAPE)
{
CaptureRegionDone();
return 0;
}
else if (WParam == VK_RETURN)
{
if (gRectSelected)
{
CaptureRegion();
}
return 0;
}
}
}
else if (Message == WM_LBUTTONDOWN)
{
if (gRectContext)
{
if (gRectSetSize[0])
{
gRectSetSizeClick = TRUE;
gRectSelection[1].x = gRectSelection[0].x + gRectSetSize[0];
gRectSelection[1].y = gRectSelection[0].y + gRectSetSize[1];
InvalidateRect(Window, NULL, FALSE);
}
else
{
int X = GET_X_LPARAM(LParam);
int Y = GET_Y_LPARAM(LParam);
int Resize = gRectSelected ? GetPointResize(X, Y) : WCAP_RESIZE_NONE;
if (Resize == WCAP_RESIZE_NONE)
{
// inital rectangle will be empty
gRectSelection[0].x = gRectSelection[1].x = X;
gRectSelection[0].y = gRectSelection[1].y = Y;
gRectSelected = FALSE;
InvalidateRect(Window, NULL, FALSE);
}
else
{
// resizing direction
gRectMousePos = (POINT){ X, Y };
}
gRectResize = Resize;
SetCapture(Window);
}
return 0;
}
}
else if (Message == WM_LBUTTONUP)
{
if (gRectContext)
{
if (gRectSetSizeClick)
{
gRectSetSizeClick = FALSE;
}
else
{
if (gRectSelected)
{
// fix the selected rectangle coordinates, so next resizing starts on the correct side
int X0 = min(gRectSelection[0].x, gRectSelection[1].x);
int Y0 = min(gRectSelection[0].y, gRectSelection[1].y);
int X1 = max(gRectSelection[0].x, gRectSelection[1].x);
int Y1 = max(gRectSelection[0].y, gRectSelection[1].y);
gRectSelection[0] = (POINT){ X0, Y0 };
gRectSelection[1] = (POINT){ X1, Y1 };
}
ReleaseCapture();
}
return 0;
}
}
else if (Message == WM_MOUSEMOVE)
{
if (gRectContext)
{
int X = GET_X_LPARAM(LParam);
int Y = GET_Y_LPARAM(LParam);
if (gRectSetSize[0])
{
SetCursor(gCursorClick);
InvalidateRect(Window, NULL, FALSE);
}
else if (gRectSetSizeClick)
{
InvalidateRect(Window, NULL, FALSE);
}
else if (WParam & MK_LBUTTON)
{
BOOL Update = FALSE;
if (gRectResize == WCAP_RESIZE_TL || gRectResize == WCAP_RESIZE_L || gRectResize == WCAP_RESIZE_BL)
{
// left moved
gRectSelection[0].x = X;
AdjustRectSizeMultipleOf2(0, 1);
Update = TRUE;
}
else if (gRectResize == WCAP_RESIZE_TR || gRectResize == WCAP_RESIZE_R || gRectResize == WCAP_RESIZE_BR)
{
// right moved
gRectSelection[1].x = X;
AdjustRectSizeMultipleOf2(1, 0);
Update = TRUE;
}
if (gRectResize == WCAP_RESIZE_TL || gRectResize == WCAP_RESIZE_T || gRectResize == WCAP_RESIZE_TR)
{
// top moved
gRectSelection[0].y = Y;
AdjustRectSizeMultipleOf2(0, 1);
Update = TRUE;
}
else if (gRectResize == WCAP_RESIZE_BL || gRectResize == WCAP_RESIZE_B || gRectResize == WCAP_RESIZE_BR)
{
// bottom moved
gRectSelection[1].y = Y;
AdjustRectSizeMultipleOf2(1, 0);
Update = TRUE;
}
if (gRectResize == WCAP_RESIZE_M)
{
// if moving whole rectangle update both
int DX = X - gRectMousePos.x;
int DY = Y - gRectMousePos.y;
gRectMousePos = (POINT){ X, Y };
gRectSelection[0].x += DX;
gRectSelection[0].y += DY;
gRectSelection[1].x += DX;
gRectSelection[1].y += DY;
Update = TRUE;
}
else if (gRectResize == WCAP_RESIZE_NONE)
{
// no resize means we're selecting initial rectangle
gRectSelection[1].x = X;
gRectSelection[1].y = Y;
AdjustRectSizeMultipleOf2(1, 0);
if (gRectSelection[0].x != gRectSelection[1].x && gRectSelection[0].y != gRectSelection[1].y)
{
// when we have non-zero size rectangle, we're good with initial stage
gRectSelected = TRUE;
Update = TRUE;
}
}
if (Update)
{
InvalidateRect(Window, NULL, FALSE);
}
}
else
{
int Resize = gRectSelected ? GetPointResize(X, Y) : WCAP_RESIZE_NONE;
SetCursor(gCursorResize[Resize]);
if (Resize == WCAP_RESIZE_NONE)
{
// in case hovering over resize text
InvalidateRect(Window, NULL, FALSE);
}
}
return 0;
}
}
else if (Message == WM_TIMER)
{
if (gRecording)
{
if (WParam == WCAP_AUDIO_CAPTURE_TIMER)
{
EncodeCapturedAudio();
return 0;
}
else if (WParam == WCAP_VIDEO_UPDATE_TIMER)
{
LARGE_INTEGER Time;
QueryPerformanceCounter(&Time);
Encoder_Update(&gEncoder, Time.QuadPart, gTickFreq.QuadPart);
return 0;
}
}
}
else if (Message == WM_POWERBROADCAST)
{
if (WParam == PBT_APMQUERYSUSPEND)
{
if (gRecording)
{
if (LParam & 1)
{
// reject request to suspend when recording
return BROADCAST_QUERY_DENY;
}
else
{
// if cannot prevent suspend, need to stop recording
StopRecording();
}
}
else
{
// allow to suspend when not recording
}
}
return TRUE;
}
else if (Message == WM_WCAP_COMMAND)
{
if (LOWORD(LParam) == WM_RBUTTONUP)
{
HMENU Menu = CreatePopupMenu();
Assert(Menu);
AppendMenuW(Menu, MF_STRING, CMD_WCAP, WCAP_TITLE);
AppendMenuW(Menu, MF_SEPARATOR, 0, NULL);
AppendMenuW(Menu, MF_STRING | (gRecording ? MF_DISABLED : 0), CMD_SETTINGS, L"Settings");
AppendMenuW(Menu, MF_STRING, CMD_QUIT, L"Exit");
POINT Mouse;
GetCursorPos(&Mouse);
SetForegroundWindow(Window);
int Command = TrackPopupMenu(Menu, TPM_RETURNCMD | TPM_NONOTIFY, Mouse.x, Mouse.y, 0, Window, NULL);
if (Command == CMD_WCAP)
{
ShellExecuteW(NULL, L"open", WCAP_URL, NULL, NULL, SW_SHOWNORMAL);
}
else if (Command == CMD_QUIT)
{
DestroyWindow(Window);
}
else if (Command == CMD_SETTINGS)
{
if (Config_ShowDialog(&gConfig))
{
Config_Save(&gConfig, gConfigPath);
DisableHotKeys();
EnableHotKeys();
}
}
DestroyMenu(Menu);
}
else if (LOWORD(LParam) == WM_LBUTTONDBLCLK)
{
if (!gRecording)
{