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2320 lines
67 KiB
2320 lines
67 KiB
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//
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// Created 31-Jul-96 [JonT]
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// PhilF-: This needs to be rewritten. You should have two classes
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// (CVfWCap & WDMCap) that derive from the same capture class instead
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// of those C-like functions...
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#include "Precomp.h"
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#ifndef WIDTHBYTES
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#define WIDTHBYTES(bits) (((bits) + 31) / 32 * 4)
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#endif
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#ifdef _DEBUG
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static PTCHAR _rgZonesCap[] = {
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TEXT("dcap"),
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TEXT("Init"),
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TEXT("Streaming"),
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TEXT("Callback"),
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TEXT("Dialogs"),
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TEXT("Trace")
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};
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#endif
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#ifndef __NT_BUILD__
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extern "C" {
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// Special thunk prototype
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BOOL thk_ThunkConnect32(LPSTR pszDll16, LPSTR pszDll32,
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HINSTANCE hInst, DWORD dwReason);
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//; Magic Function code values for DeviceIOControl code.
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//DCAPVXD_THREADTIMESERVICE equ 101h
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//DCAPVXD_R0THREADIDSERVICE equ 102h
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#define DCAPVXD_THREADTIMESERVICE 0x101
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#define DCAPVXD_R0THREADIDSERVICE 0x102
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// KERNEL32 prototypes (not in headers but are exported by name on Win95)
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void* WINAPI MapSL(DWORD dw1616Ptr);
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HANDLE WINAPI OpenVxDHandle(HANDLE h);
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}
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#endif
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// Helper function prototypes
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BOOL initializeCaptureDeviceList(void);
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HVIDEO openVideoChannel(DWORD dwDeviceID, DWORD dwFlags);
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BOOL allocateBuffers(HCAPDEV hcd, int nBuffers);
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void freeBuffers(HCAPDEV hcd);
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// Globals
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HINSTANCE g_hInst;
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int g_cDevices;
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LPINTERNALCAPDEV g_aCapDevices[DCAP_MAX_DEVICES];
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BOOL g_fInitCapDevList;
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#define INIT_CAP_DEV_LIST() if (g_fInitCapDevList) { initializeCaptureDeviceList(); }
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#ifndef __NT_BUILD__
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HANDLE s_hVxD = NULL;
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#endif //__NT_BUILD__
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// Strings
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#ifdef __NT_BUILD__
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char g_szVFWRegKey[] = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Drivers32";
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char g_szVFWRegDescKey[] = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\drivers.desc";
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char g_szDriverName[] = "MSVIDEOx";
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#ifndef SHOW_VFW2WDM_MAPPER
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char g_szVfWToWDMMapperDescription[] = "WDM Video For Windows Capture Driver (Win32)";
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char g_szVfWToWDMMapperName[] = "VfWWDM32.dll";
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#endif
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#else
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char g_szVFWRegKey[] = "SYSTEM\\CurrentControlSet\\Control\\MediaResources\\msvideo";
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char g_szRegDescription[] = "Description";
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char g_szRegName[] = "Driver";
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char g_szRegDisabled[] = "Disabled";
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char g_szDevNode[] = "DevNode";
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char g_szSystemIni[] = "system.ini";
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char g_szDriverSection[] = "drivers";
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char g_szDriverKey[] = "MSVIDEOx";
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#ifndef SHOW_VFW2WDM_MAPPER
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char g_szVfWToWDMMapperDescription[] = "VfW MM 16bit Driver for WDM V. Cap. Devices";
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char g_szVfWToWDMMapperName[] = "vfwwdm.drv";
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#endif
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#endif
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char g_szMSOfficeCamcorderDescription[] = "Screen Capture Device Driver for AVI";
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char g_szMSOfficeCamcorderName[] = "Gdicap97.drv";
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char g_szVerQueryForDesc[] = "\\StringFileInfo\\040904E4\\FileDescription";
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void DoClose(HCAPDEV hcd);
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#define ENTER_DCAP(hcd) InterlockedIncrement(&(hcd)->busyCount);
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#define LEAVE_DCAP(hcd) if (InterlockedDecrement(&(hcd)->busyCount) == 0) DoClose((hcd));
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// DllEntryPoint
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extern "C" BOOL
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DllEntryPoint(
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HINSTANCE hInst,
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DWORD dwReason,
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LPVOID lpReserved
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)
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{
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static int s_nProcesses = 0;
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FX_ENTRY("DllEntryPoint");
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#ifndef __NT_BUILD__
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// We want to load the VxD even before initializing the thunks
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// because the 16-bit half initializes the VxD during the thk_ThunkConnect32 call
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if (!s_hVxD)
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{
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s_hVxD = CreateFile("\\\\.\\DCAPVXD.VXD", 0,0,0,0, FILE_FLAG_DELETE_ON_CLOSE, 0);
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if (s_hVxD == INVALID_HANDLE_VALUE)
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{
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ERRORMESSAGE(("%s: Failure loading VxD - Fatal\r\n", _fx_));
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return FALSE;
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}
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}
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// Initialize the thunks
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if (!(thk_ThunkConnect32("DCAP16.DLL", "DCAP32.DLL", hInst, dwReason)))
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{
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ERRORMESSAGE(("%s: thk_ThunkConnect32 failed!\r\n", _fx_));
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return FALSE;
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}
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#endif
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switch (dwReason)
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{
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case DLL_PROCESS_ATTACH:
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// Save global hinst
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g_hInst = hInst;
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// Only initialize on the first DLL load
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if (s_nProcesses++ == 0)
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{
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DBGINIT(&ghDbgZoneCap, _rgZonesCap);
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DBG_INIT_MEMORY_TRACKING(hInst);
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g_fInitCapDevList = TRUE;
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}
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else
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return FALSE; // fail to load multiple instances
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break;
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case DLL_PROCESS_DETACH:
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if (--s_nProcesses == 0) // Are we going away?
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{
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#ifndef __NT_BUILD__
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CloseHandle(s_hVxD);
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s_hVxD = NULL;
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#endif
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DBG_CHECK_MEMORY_TRACKING(hInst);
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DBGDEINIT(&ghDbgZoneCap);
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}
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break;
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}
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return TRUE;
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}
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void GetVersionData (LPINTERNALCAPDEV lpcd)
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{
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int j;
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DWORD dwVerInfoSize;
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LPSTR lpstrInfo;
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LPSTR lpDesc;
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// Version number
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// You must find the size first before getting any file info
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dwVerInfoSize = GetFileVersionInfoSize(lpcd->szDeviceName, NULL);
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if (dwVerInfoSize && (lpstrInfo = (LPSTR)LocalAlloc(LPTR, dwVerInfoSize))) {
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// Read from the file into our block
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if (GetFileVersionInfo(lpcd->szDeviceName, 0L, dwVerInfoSize, lpstrInfo)) {
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lpDesc = NULL;
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if (VerQueryValue(lpstrInfo, g_szVerQueryForDesc, (LPVOID *)&lpDesc, (PUINT)&j) && lpDesc) {
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lstrcpyn(lpcd->szDeviceDescription, lpDesc, j);
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wsprintf(lpcd->szDeviceVersion, TEXT("Version: %d.%d.%d.%d"),
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HIWORD(((VS_VERSION *)lpstrInfo)->vffInfo.dwFileVersionMS), LOWORD(((VS_VERSION *)lpstrInfo)->vffInfo.dwFileVersionMS),
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HIWORD(((VS_VERSION *)lpstrInfo)->vffInfo.dwFileVersionLS), LOWORD(((VS_VERSION *)lpstrInfo)->vffInfo.dwFileVersionLS));
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}
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}
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LocalFree(lpstrInfo);
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}
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}
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#ifdef __NT_BUILD__
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// initializeCaptureDeviceList
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// Sets up our static array of available capture devices from the registry
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// Returns FALSE iff there are no video devices.
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BOOL
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initializeCaptureDeviceList(void)
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{
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HKEY hkeyVFW, hkeyVFWdesc;
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DWORD dwType;
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DWORD dwSize;
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int i;
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LPINTERNALCAPDEV lpcd;
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HCAPDEV hCapDev;
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FX_ENTRY("initializeCaptureDeviceList");
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// Clear the entire array and start with zero devices
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g_cDevices = 0;
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ZeroMemory(g_aCapDevices, sizeof (g_aCapDevices));
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// Open the reg key in question
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if (RegOpenKey(HKEY_LOCAL_MACHINE, g_szVFWRegKey, &hkeyVFW) == ERROR_SUCCESS)
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{
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if (RegOpenKey(HKEY_LOCAL_MACHINE, g_szVFWRegDescKey, &hkeyVFWdesc) != ERROR_SUCCESS)
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hkeyVFWdesc = 0;
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lpcd = (LPINTERNALCAPDEV)LocalAlloc(LPTR, sizeof (INTERNALCAPDEV));
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if (lpcd)
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{
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// Loop through all possible VFW drivers in registry
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for (i = 0 ; i < DCAP_MAX_VFW_DEVICES ; i++)
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{
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// Create the key name
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if (i == 0)
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g_szDriverName[sizeof (g_szDriverName) - 2] = 0;
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else
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g_szDriverName[sizeof (g_szDriverName) - 2] = (BYTE)i + '0';
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// Name
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dwSize = sizeof(lpcd->szDeviceName);
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if (RegQueryValueEx(hkeyVFW, g_szDriverName, NULL, &dwType, (LPBYTE)lpcd->szDeviceName, &dwSize) == ERROR_SUCCESS)
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{
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// Description
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if (hkeyVFWdesc)
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{
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dwSize = sizeof(lpcd->szDeviceDescription);
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RegQueryValueEx(hkeyVFWdesc, lpcd->szDeviceName, NULL, &dwType, (LPBYTE)lpcd->szDeviceDescription, &dwSize);
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}
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else
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lstrcpy (lpcd->szDeviceDescription, lpcd->szDeviceName);
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// Devnode
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lpcd->dwDevNode = 0;
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lpcd->nDeviceIndex = g_cDevices;
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GetVersionData(lpcd);
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#ifndef SHOW_VFW2WDM_MAPPER
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// Remove bogus Camcorder capture device from list of devices shown to the user
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// The Camcorder driver is a fake capture device used by the MS Office Camcorder
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// to capture screen activity to an AVI file. This not a legit capture device driver
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// and is extremely buggy.
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// We also remove the VfW to WDM mapper if we are on NT5.
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if (lstrcmp(lpcd->szDeviceDescription, g_szMSOfficeCamcorderDescription) && lstrcmp(lpcd->szDeviceName, g_szMSOfficeCamcorderName) && lstrcmp(lpcd->szDeviceDescription, g_szVfWToWDMMapperDescription) && lstrcmp(lpcd->szDeviceName, g_szVfWToWDMMapperName))
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{
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#endif
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g_aCapDevices[g_cDevices] = lpcd;
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g_aCapDevices[g_cDevices]->nDeviceIndex = g_cDevices;
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g_cDevices++;
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#ifndef SHOW_VFW2WDM_MAPPER
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}
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else
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LocalFree(lpcd);
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#endif
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lpcd = (LPINTERNALCAPDEV)LocalAlloc(LPTR, sizeof (INTERNALCAPDEV));
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if (!lpcd)
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{
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ERRORMESSAGE(("%s: Failed to allocate an INTERNALCAPDEV buffer\r\n", _fx_));
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break; // break out of the FOR loop
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}
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}
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}
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}
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else
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{
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ERRORMESSAGE(("%s: Failed to allocate an INTERNALCAPDEV buffer\r\n", _fx_));
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}
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if (lpcd)
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LocalFree (lpcd); // free the extra buffer
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RegCloseKey(hkeyVFW);
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if (hkeyVFWdesc)
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RegCloseKey(hkeyVFWdesc);
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}
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#ifndef HIDE_WDM_DEVICES
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WDMGetDevices();
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#endif
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g_fInitCapDevList = FALSE;
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return TRUE;
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}
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#else //__NT_BUILD__
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// initializeCaptureDeviceList
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// Sets up our static array of available capture devices from the registry and
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// from SYSTEM.INI.
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// Returns FALSE iff there are no video devices.
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BOOL
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initializeCaptureDeviceList(void)
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{
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int i, j, index;
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HKEY hkeyVFW;
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HKEY hkeyEnum;
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DWORD dwType;
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DWORD dwSize;
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LPINTERNALCAPDEV lpcd;
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char szEnumName[MAX_PATH];
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char szDisabled[3];
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HCAPDEV hCapDev;
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OSVERSIONINFO osvInfo = {0};
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FX_ENTRY("initializeCaptureDeviceList");
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// Clear the entire array and start with zero devices
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g_cDevices = 0;
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ZeroMemory(g_aCapDevices, sizeof (g_aCapDevices));
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// If we are on a version on Win95 (OSRx) use the mapper to talk to WDM devices.
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// The WDM drivers used on OSR2 are not stream class minidrivers so we fail
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// to handle them properly. Let the mapper do this for us.
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osvInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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GetVersionEx(&osvInfo);
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// Open the reg key in question
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if (RegOpenKey(HKEY_LOCAL_MACHINE, g_szVFWRegKey, &hkeyVFW) == ERROR_SUCCESS)
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{
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// Loop through all possible VFW drivers in registry
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for (i = 0 ; i < DCAP_MAX_VFW_DEVICES ; i++)
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{
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// See if the key is there and if not, we're done. Note that registry
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// keys have to be sequential, no holes allowed since the only way
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// to query is sequential...
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if (RegEnumKey(hkeyVFW, i, szEnumName, MAX_PATH) != ERROR_SUCCESS ||
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RegOpenKey(hkeyVFW, szEnumName, &hkeyEnum) != ERROR_SUCCESS)
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break;
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lpcd = (LPINTERNALCAPDEV)LocalAlloc(LPTR, sizeof (INTERNALCAPDEV));
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if (!lpcd)
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{
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ERRORMESSAGE(("%s: Failed to allocate an INTERNALCAPDEV buffer\r\n", _fx_));
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break; // break from the FOR loop
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}
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// Description
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dwSize = sizeof (lpcd->szDeviceDescription);
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RegQueryValueEx(hkeyEnum, g_szRegDescription, NULL, &dwType, (LPBYTE)lpcd->szDeviceDescription, &dwSize);
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// Name
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dwSize = sizeof (lpcd->szDeviceName);
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RegQueryValueEx(hkeyEnum, g_szRegName, NULL, &dwType, (LPBYTE)lpcd->szDeviceName, &dwSize);
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// Disabled
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dwSize = sizeof (szDisabled);
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if (RegQueryValueEx(hkeyEnum, g_szRegDisabled, NULL, &dwType, (LPBYTE)szDisabled, &dwSize) == ERROR_SUCCESS &&
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szDisabled[0] == '1')
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lpcd->dwFlags |= CAPTURE_DEVICE_DISABLED;
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// Devnode
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dwSize = sizeof (DWORD);
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RegQueryValueEx(hkeyEnum, g_szDevNode, NULL, &dwType, (BYTE*)&lpcd->dwDevNode, &dwSize);
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GetVersionData(lpcd);
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#ifndef SHOW_VFW2WDM_MAPPER
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// Remove bogus Camcorder capture device from list of devices shown to the user
|
|
// The Camcorder driver is a fake capture device used by the MS Office Camcorder
|
|
// to capture screen activity to an AVI file. This not a legit capture device driver
|
|
// and is extremely buggy.
|
|
// We also remove the VfW to WDM mapper if we are on Win98. On Win95 we still use
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// it to get access to USB devices developed for OSR2.
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if ((lstrcmp(lpcd->szDeviceDescription, g_szMSOfficeCamcorderDescription) && lstrcmp(lpcd->szDeviceName, g_szMSOfficeCamcorderName)) && (((osvInfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) && (osvInfo.dwMinorVersion == 0)) || lstrcmp(lpcd->szDeviceDescription, g_szVfWToWDMMapperDescription) && lstrcmp(lpcd->szDeviceName, g_szVfWToWDMMapperName)))
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{
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#endif
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g_aCapDevices[g_cDevices] = lpcd;
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g_aCapDevices[g_cDevices]->nDeviceIndex = g_cDevices;
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g_cDevices++;
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#ifndef SHOW_VFW2WDM_MAPPER
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}
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else
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LocalFree(lpcd);
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#endif
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RegCloseKey(hkeyEnum);
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}
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RegCloseKey(hkeyVFW);
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}
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// Now get the rest from system.ini, if any
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for (i = 0 ; i < DCAP_MAX_VFW_DEVICES ; i++)
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{
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// Create the key name
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if (i == 0)
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g_szDriverKey[sizeof (g_szDriverKey) - 2] = 0;
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else
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g_szDriverKey[sizeof (g_szDriverKey) - 2] = (BYTE)i + '0';
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// See if there's a profile string
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if (GetPrivateProfileString(g_szDriverSection, g_szDriverKey, "",
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szEnumName, MAX_PATH, g_szSystemIni))
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{
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// First check to see if this is a dupe. If it is, go no further.
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if (g_cDevices)
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{
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for (j = 0 ; j < g_cDevices ; j++)
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if (!lstrcmpi(g_aCapDevices[j]->szDeviceName, szEnumName))
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goto NextDriver;
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}
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lpcd = (LPINTERNALCAPDEV)LocalAlloc(LPTR, sizeof (INTERNALCAPDEV));
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|
if (!lpcd)
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{
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ERRORMESSAGE(("%s: Failed to allocate an INTERNALCAPDEV buffer\r\n", _fx_));
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break; // break from the FOR loop
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}
|
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// We have a unique name, copy in the driver name and find the description
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// by reading the driver's versioninfo resource.
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lstrcpy(lpcd->szDeviceName, szEnumName);
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GetVersionData(lpcd);
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|
|
|
#ifndef SHOW_VFW2WDM_MAPPER
|
|
// Remove bogus Camcorder capture device from list of devices shown to the user
|
|
// The Camcorder driver is a fake capture device used by the MS Office Camcorder
|
|
// to capture screen activity to an AVI file. This not a legit capture device driver
|
|
// and is extremely buggy.
|
|
// We also remove the VfW to WDM mapper if we are on Win98. On Win95 we still use
|
|
// it to get access to USB devices developed for OSR2.
|
|
if ((lstrcmp(lpcd->szDeviceDescription, g_szMSOfficeCamcorderDescription) && lstrcmp(lpcd->szDeviceName, g_szMSOfficeCamcorderName)) && (((osvInfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) && (osvInfo.dwMinorVersion == 0)) || lstrcmp(lpcd->szDeviceDescription, g_szVfWToWDMMapperDescription) && lstrcmp(lpcd->szDeviceName, g_szVfWToWDMMapperName)))
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{
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#endif
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g_aCapDevices[g_cDevices] = lpcd;
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g_aCapDevices[g_cDevices]->nDeviceIndex = g_cDevices;
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g_cDevices++;
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#ifndef SHOW_VFW2WDM_MAPPER
|
|
}
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else
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LocalFree(lpcd);
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#endif
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}
|
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NextDriver: ;
|
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}
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|
|
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#ifndef HIDE_WDM_DEVICES
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WDMGetDevices();
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|
#endif
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g_fInitCapDevList = FALSE;
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return TRUE;
|
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}
|
|
#endif //__NT_BUILD__
|
|
|
|
|
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// GetNumCaptureDevice
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// Returns the number of *ENABLED* capture devices
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|
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/****************************************************************************
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|
* @doc EXTERNAL DCAP32
|
|
*
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|
* @func int DCAPI | GetNumCaptureDevices | This function returns the number
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* of *ENABLED* capture devices.
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|
*
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|
* @rdesc Returns the number of *ENABLE* capture devices.
|
|
***************************************************************************/
|
|
int
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|
DCAPI
|
|
GetNumCaptureDevices()
|
|
{
|
|
int nNumCapDevices = 0;
|
|
int nDeviceIndex = 0;
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
while (nDeviceIndex < g_cDevices)
|
|
if (!(g_aCapDevices[nDeviceIndex++]->dwFlags & CAPTURE_DEVICE_DISABLED))
|
|
nNumCapDevices++;
|
|
|
|
return nNumCapDevices;
|
|
}
|
|
|
|
|
|
// FindFirstCaptureDevice
|
|
// Returns the first capture device available that matches the string
|
|
// or the first one registered if szDeviceDescription is NULL
|
|
|
|
BOOL
|
|
DCAPI
|
|
FindFirstCaptureDevice(
|
|
IN OUT FINDCAPTUREDEVICE* lpfcd,
|
|
char* szDeviceDescription
|
|
)
|
|
{
|
|
int i;
|
|
static HCAPDEV hcap = NULL;
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
// Validate size
|
|
if (lpfcd->dwSize != sizeof (FINDCAPTUREDEVICE))
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
// hack to avoid quickcam driver problem when hardware not installed
|
|
if (g_cDevices && !hcap) {
|
|
for (i = 0; ((i < g_cDevices) && (g_aCapDevices[i]->dwFlags & CAPTURE_DEVICE_DISABLED)); i++);
|
|
if ((i < g_cDevices) && (hcap = OpenCaptureDevice(i))) {
|
|
CloseCaptureDevice (hcap);
|
|
}
|
|
else {
|
|
if (i < g_cDevices) {
|
|
g_aCapDevices[i]->dwFlags |= CAPTURE_DEVICE_DISABLED;
|
|
#ifdef _DEBUG
|
|
OutputDebugString((i == 0) ? "DCAP32: 1st capture device fails to open!\r\n" : (i == 1) ? "DCAP32: 2nd capture device fails to open!\r\n" : (i == 2) ? "DCAP32: 3rd capture device fails to open!\r\n" : "DCAP32: 4th capture device fails to open!\r\n");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
// Search if necessary
|
|
if (szDeviceDescription)
|
|
{
|
|
for (i = 0 ; i < g_cDevices ; i++)
|
|
if (!lstrcmpi(g_aCapDevices[i]->szDeviceDescription, szDeviceDescription) &&
|
|
!(g_aCapDevices[i]->dwFlags & CAPTURE_DEVICE_DISABLED))
|
|
break;
|
|
}
|
|
else
|
|
for (i = 0; ((i < g_cDevices) && (g_aCapDevices[i]->dwFlags & CAPTURE_DEVICE_DISABLED)); i++);
|
|
|
|
// Return the info
|
|
if (i == g_cDevices)
|
|
{
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
return FALSE;
|
|
}
|
|
else {
|
|
lpfcd->nDeviceIndex = i;
|
|
lstrcpy(lpfcd->szDeviceName, g_aCapDevices[lpfcd->nDeviceIndex]->szDeviceName);
|
|
lstrcpy(lpfcd->szDeviceDescription, g_aCapDevices[i]->szDeviceDescription);
|
|
lstrcpy(lpfcd->szDeviceVersion, g_aCapDevices[i]->szDeviceVersion);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
|
|
// FindFirstCaptureDeviceByIndex
|
|
// Returns the device with the specified index.
|
|
|
|
BOOL
|
|
DCAPI
|
|
FindFirstCaptureDeviceByIndex(
|
|
IN OUT FINDCAPTUREDEVICE* lpfcd,
|
|
int nDeviceIndex
|
|
)
|
|
{
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
// Validate size and index
|
|
if (lpfcd->dwSize != sizeof (FINDCAPTUREDEVICE) ||
|
|
nDeviceIndex >= g_cDevices || (nDeviceIndex < 0) ||
|
|
(g_aCapDevices[nDeviceIndex]->dwFlags & CAPTURE_DEVICE_DISABLED))
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
// Return the info
|
|
lpfcd->nDeviceIndex = nDeviceIndex;
|
|
lstrcpy(lpfcd->szDeviceName, g_aCapDevices[lpfcd->nDeviceIndex]->szDeviceName);
|
|
lstrcpy(lpfcd->szDeviceDescription, g_aCapDevices[nDeviceIndex]->szDeviceDescription);
|
|
lstrcpy(lpfcd->szDeviceVersion, g_aCapDevices[nDeviceIndex]->szDeviceVersion);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
// FindNextCaptureDevice
|
|
// Returns the next capture device in list.
|
|
|
|
BOOL
|
|
DCAPI
|
|
FindNextCaptureDevice(
|
|
IN OUT FINDCAPTUREDEVICE* lpfcd
|
|
)
|
|
{
|
|
HCAPDEV hcap = NULL;
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
// Parameter validate the passed in structure
|
|
if (lpfcd->dwSize != sizeof (FINDCAPTUREDEVICE))
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
while (++lpfcd->nDeviceIndex < g_cDevices)
|
|
{
|
|
if ((!(g_aCapDevices[lpfcd->nDeviceIndex]->dwFlags & CAPTURE_DEVICE_DISABLED)))
|
|
{
|
|
if (g_aCapDevices[lpfcd->nDeviceIndex]->dwFlags & CAPTURE_DEVICE_OPEN)
|
|
break;
|
|
else
|
|
{
|
|
if (hcap = OpenCaptureDevice(lpfcd->nDeviceIndex))
|
|
{
|
|
CloseCaptureDevice (hcap);
|
|
break;
|
|
}
|
|
else
|
|
g_aCapDevices[lpfcd->nDeviceIndex]->dwFlags |= CAPTURE_DEVICE_DISABLED;
|
|
}
|
|
}
|
|
}
|
|
|
|
// See if we're at the end
|
|
if (lpfcd->nDeviceIndex >= g_cDevices)
|
|
{
|
|
SetLastError(ERROR_NO_MORE_FILES);
|
|
return FALSE;
|
|
}
|
|
|
|
// Otherwise, fill in the info for the next one
|
|
lstrcpy(lpfcd->szDeviceName, g_aCapDevices[lpfcd->nDeviceIndex]->szDeviceName);
|
|
lstrcpy(lpfcd->szDeviceDescription, g_aCapDevices[lpfcd->nDeviceIndex]->szDeviceDescription);
|
|
lstrcpy(lpfcd->szDeviceVersion, g_aCapDevices[lpfcd->nDeviceIndex]->szDeviceVersion);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
// OpenCaptureDevice
|
|
|
|
HCAPDEV
|
|
DCAPI
|
|
OpenCaptureDevice(
|
|
int nDeviceIndex
|
|
)
|
|
{
|
|
LPINTERNALCAPDEV hcd;
|
|
LPBITMAPINFOHEADER lpbmih = NULL;
|
|
DWORD err, dwLen;
|
|
BOOL fl;
|
|
|
|
FX_ENTRY("OpenCaptureDevice");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
// Validate the device index
|
|
if ((unsigned)nDeviceIndex >= (unsigned)g_cDevices ||
|
|
(g_aCapDevices[nDeviceIndex]->dwFlags & (CAPTURE_DEVICE_DISABLED | CAPTURE_DEVICE_OPEN))) {
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return NULL;
|
|
}
|
|
|
|
hcd = g_aCapDevices[nDeviceIndex];
|
|
hcd->busyCount = 1; // we start at 1 to say that we're open
|
|
// DoClose happens when count goes to 0
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
#ifndef __NT_BUILD__
|
|
// Allocate some memory we can lock for the LOCKEDINFO structure
|
|
hcd->wselLockedInfo = _AllocateLockableBuffer(sizeof (LOCKEDINFO));
|
|
if (!hcd->wselLockedInfo) {
|
|
err = ERROR_OUTOFMEMORY;
|
|
goto Error;
|
|
}
|
|
|
|
// Do our own thunking so we can track the selector for this buffer
|
|
hcd->lpli = (LPLOCKEDINFO)MapSL(((DWORD)hcd->wselLockedInfo) << 16);
|
|
#endif
|
|
|
|
// Open the necessary video channels
|
|
if (!(hcd->hvideoIn = openVideoChannel(nDeviceIndex, VIDEO_IN)) ||
|
|
!(hcd->hvideoCapture = openVideoChannel(nDeviceIndex, VIDEO_EXTERNALIN)))
|
|
{
|
|
ERRORMESSAGE(("%s: Couldn't open video channel(s)\r\n", _fx_));
|
|
if (hcd->hvideoIn)
|
|
_CloseDriver((HDRVR)hcd->hvideoIn, 0, 0);
|
|
SetLastError(ERROR_DCAP_DEVICE_IN_USE);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return FALSE;
|
|
}
|
|
|
|
#ifdef USE_VIDEO_OVERLAY
|
|
if (hcd->hvideoOverlay = openVideoChannel(nDeviceIndex, VIDEO_EXTERNALOUT))
|
|
{
|
|
DEBUGMSG(ZONE_INIT, ("%s: Capture device supports overlay!\r\n", _fx_));
|
|
}
|
|
else
|
|
{
|
|
DEBUGMSG(ZONE_INIT, ("%s: Capture device does not support overlay\r\n", _fx_));
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
if (!WDMOpenDevice(nDeviceIndex))
|
|
{
|
|
ERRORMESSAGE(("%s: Couldn't open WDM device\r\n", _fx_));
|
|
SetLastError(ERROR_DCAP_DEVICE_IN_USE);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
hcd->dwFlags |= CAPTURE_DEVICE_OPEN;
|
|
|
|
// Get the initial format and set the values
|
|
dwLen = GetCaptureDeviceFormatHeaderSize(hcd);
|
|
if (lpbmih = (LPBITMAPINFOHEADER)LocalAlloc(LPTR, dwLen)) {
|
|
lpbmih->biSize = dwLen;
|
|
fl = GetCaptureDeviceFormat(hcd, lpbmih);
|
|
//If we can't get a format, or height and/or width are 0, don't use this device
|
|
if (!fl || lpbmih->biWidth == 0 || lpbmih->biHeight == 0) {
|
|
ERRORMESSAGE(("%s: GetCaptureDeviceFormat failed\r\n", _fx_));
|
|
err = ERROR_DCAP_NO_DRIVER_SUPPORT;
|
|
goto Error;
|
|
}
|
|
fl = SetCaptureDeviceFormat(hcd, lpbmih, 0, 0);
|
|
if (!fl) {
|
|
ERRORMESSAGE(("%s: SetCaptureDeviceFormat failed\r\n", _fx_));
|
|
err = ERROR_DCAP_NO_DRIVER_SUPPORT;
|
|
goto Error;
|
|
}
|
|
#if 0
|
|
_SetCaptureRect(hcd->hvideoIn, DVM_DST_RECT, 0, 0, lpbmih->biWidth, lpbmih->biHeight);
|
|
_SetCaptureRect(hcd->hvideoCapture, DVM_SRC_RECT, 0, 0, lpbmih->biWidth, lpbmih->biHeight);
|
|
_SetCaptureRect(hcd->hvideoCapture, DVM_DST_RECT, 0, 0, lpbmih->biWidth, lpbmih->biHeight);
|
|
#endif
|
|
LocalFree((HANDLE)lpbmih);
|
|
} else {
|
|
err = ERROR_OUTOFMEMORY;
|
|
goto Error;
|
|
}
|
|
|
|
// Keep a stream running all the time on EXTERNALIN (capture->frame buffer).
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
#ifdef USE_VIDEO_OVERLAY
|
|
if (hcd->hvideoOverlay)
|
|
_InitializeExternalVideoStream(hcd->hvideoOverlay);
|
|
#else
|
|
_InitializeExternalVideoStream(hcd->hvideoCapture);
|
|
#endif
|
|
|
|
#ifndef __NT_BUILD__
|
|
// Lock our structure so it can be touched at interrupt time
|
|
_LockBuffer(hcd->wselLockedInfo);
|
|
#endif
|
|
}
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return hcd;
|
|
|
|
Error:
|
|
hcd->dwFlags &= ~CAPTURE_DEVICE_OPEN;
|
|
if (lpbmih) {
|
|
LocalFree((HANDLE)lpbmih);
|
|
lpbmih = NULL;
|
|
}
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
if (hcd->hvideoIn) {
|
|
_CloseDriver((HDRVR)hcd->hvideoIn, 0, 0);
|
|
hcd->hvideoIn = NULL;
|
|
}
|
|
if (hcd->hvideoCapture) {
|
|
_CloseDriver((HDRVR)hcd->hvideoCapture, 0, 0);
|
|
hcd->hvideoCapture = NULL;
|
|
}
|
|
#ifdef USE_VIDEO_OVERLAY
|
|
if (hcd->hvideoOverlay) {
|
|
_CloseDriver((HDRVR)hcd->hvideoOverlay, 0, 0);
|
|
hcd->hvideoOverlay = NULL;
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
WDMCloseDevice(nDeviceIndex);
|
|
}
|
|
SetLastError(err);
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
void
|
|
DoClose(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
FX_ENTRY("DoClose");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
// Clean up streaming on main channel, including freeing all buffers
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING_INITIALIZED)
|
|
UninitializeStreaming(hcd);
|
|
|
|
// Stop streaming on the capture channel
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
#ifdef USE_VIDEO_OVERLAY
|
|
if (hcd->hvideoOverlay) {
|
|
_SendDriverMessage((HDRVR)hcd->hvideoOverlay, DVM_STREAM_FINI, 0L, 0L);
|
|
_CloseDriver((HDRVR)hcd->hvideoOverlay, 0, 0);
|
|
hcd->hvideoOverlay = NULL;
|
|
}
|
|
#else
|
|
_SendDriverMessage((HDRVR)hcd->hvideoCapture, DVM_STREAM_FINI, 0L, 0L);
|
|
#endif
|
|
|
|
#ifdef USE_VIDEO_OVERLAY
|
|
if (hcd->hvideoOverlay) {
|
|
_CloseDriver((HDRVR)hcd->hvideoOverlay, 0, 0);
|
|
hcd->hvideoOverlay = NULL;
|
|
}
|
|
#endif
|
|
|
|
// Close the driver channels
|
|
if (!_CloseDriver((HDRVR)hcd->hvideoCapture, 0, 0) ||
|
|
!_CloseDriver((HDRVR)hcd->hvideoIn, 0, 0))
|
|
{
|
|
SetLastError(ERROR_DCAP_NONSPECIFIC);
|
|
ERRORMESSAGE(("%s: Couldn't close channel, error unknown\r\n", _fx_));
|
|
// with delayed close this is catastrophic, we can't just return that the device is still
|
|
// open, but we can't get the device to close either, so we'll have to just leave it in this
|
|
// hung open state - hopefully this never happens...
|
|
}
|
|
hcd->hvideoCapture = NULL;
|
|
hcd->hvideoIn = NULL;
|
|
#ifndef __NT_BUILD__
|
|
// Free the LOCKEDINFO structure
|
|
_FreeLockableBuffer(hcd->wselLockedInfo);
|
|
hcd->wselLockedInfo = 0;
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
WDMCloseDevice(hcd->nDeviceIndex);
|
|
}
|
|
|
|
hcd->dwFlags &= ~CAPTURE_DEVICE_OPEN;
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
}
|
|
|
|
BOOL
|
|
DCAPI
|
|
CloseCaptureDevice(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
FX_ENTRY("CloseCaptureDevice");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
hcd->dwFlags &= ~CAPTURE_DEVICE_OPEN; // clear flag to disable other API's
|
|
LEAVE_DCAP(hcd); // dec our enter count, if no other thread is in a DCAP
|
|
// service, then this dec will go to 0 and we'll call
|
|
// DoClose; else we won't call DoClose until the other
|
|
// active service dec's the count to 0
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
DWORD
|
|
DCAPI
|
|
GetCaptureDeviceFormatHeaderSize(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
DWORD res;
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
ENTER_DCAP(hcd);
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
res = _GetVideoFormatSize(reinterpret_cast<HDRVR>(hcd->hvideoIn));
|
|
else
|
|
res = WDMGetVideoFormatSize(hcd->nDeviceIndex);
|
|
|
|
LEAVE_DCAP(hcd);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
BOOL
|
|
DCAPI
|
|
GetCaptureDeviceFormat(
|
|
HCAPDEV hcd,
|
|
LPBITMAPINFOHEADER lpbmih
|
|
)
|
|
{
|
|
BOOL fRes;
|
|
|
|
FX_ENTRY("GetCaptureDeviceFormat");
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
ENTER_DCAP(hcd);
|
|
|
|
// Call the driver to get the bitmap information
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
fRes = _GetVideoFormat(hcd->hvideoIn, lpbmih);
|
|
else
|
|
fRes = WDMGetVideoFormat(hcd->nDeviceIndex, lpbmih);
|
|
|
|
if (!fRes)
|
|
{
|
|
// This is DOOM if the driver doesn't support this.
|
|
// It might be useful have some sort of fallback code here,
|
|
// or else we should try this when the connection is made and
|
|
// fail it unless this call works.
|
|
ERRORMESSAGE(("%s: Failed to get video format\r\n", _fx_));
|
|
SetLastError(ERROR_NOT_SUPPORTED);
|
|
LEAVE_DCAP(hcd);
|
|
return FALSE;
|
|
}
|
|
|
|
if (lpbmih->biCompression == BI_RGB)
|
|
lpbmih->biSizeImage = WIDTHBYTES(lpbmih->biWidth * lpbmih->biBitCount) * lpbmih->biHeight;
|
|
|
|
// Keep track of current buffer size needed
|
|
hcd->dwcbBuffers = sizeof(CAPBUFFERHDR) + lpbmih->biSizeImage;
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
BOOL
|
|
DCAPI
|
|
SetCaptureDeviceFormat(
|
|
HCAPDEV hcd,
|
|
LPBITMAPINFOHEADER lpbmih,
|
|
LONG srcwidth,
|
|
LONG srcheight
|
|
)
|
|
{
|
|
BOOL fRes;
|
|
#ifdef USE_VIDEO_OVERLAY
|
|
RECT rect;
|
|
#endif
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
// Don't allow this if streaming
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING)
|
|
{
|
|
SetLastError(ERROR_DCAP_NOT_WHILE_STREAMING);
|
|
return FALSE;
|
|
}
|
|
ENTER_DCAP(hcd);
|
|
|
|
// Call the driver to set the format
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
fRes = _SetVideoFormat(hcd->hvideoCapture, hcd->hvideoIn, lpbmih);
|
|
#ifdef USE_VIDEO_OVERLAY
|
|
if (fRes && hcd->hvideoOverlay)
|
|
{
|
|
// Get the current rectangles
|
|
_SendDriverMessage((HDRVR)hcd->hvideoOverlay, DVM_DST_RECT, (LPARAM)(LPVOID)&rect, VIDEO_CONFIGURE_GET);
|
|
DEBUGMSG(ZONE_INIT, ("%s: Current overlay dst rect is rect.left=%ld, rect.top=%ld, rect.right=%ld, rect.bottom=%ld\r\n", _fx_, rect.left, rect.top, rect.right, rect.bottom));
|
|
_SendDriverMessage((HDRVR)hcd->hvideoOverlay, DVM_SRC_RECT, (LPARAM)(LPVOID)&rect, VIDEO_CONFIGURE_GET);
|
|
DEBUGMSG(ZONE_INIT, ("%s: Current overlay src rect is rect.left=%ld, rect.top=%ld, rect.right=%ld, rect.bottom=%ld\r\n", _fx_, rect.left, rect.top, rect.right, rect.bottom));
|
|
|
|
// Set the rectangles
|
|
rect.left = rect.top = 0;
|
|
rect.right = (WORD)lpbmih->biWidth;
|
|
rect.bottom = (WORD)lpbmih->biHeight;
|
|
_SendDriverMessage((HDRVR)hcd->hvideoOverlay, DVM_DST_RECT, (LPARAM)(LPVOID)&rect, VIDEO_CONFIGURE_SET);
|
|
_SendDriverMessage((HDRVR)hcd->hvideoOverlay, DVM_SRC_RECT, (LPARAM)(LPVOID)&rect, VIDEO_CONFIGURE_SET);
|
|
if (hcd->hvideoOverlay)
|
|
_InitializeExternalVideoStream(hcd->hvideoOverlay);
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
fRes = WDMSetVideoFormat(hcd->nDeviceIndex, lpbmih);
|
|
|
|
if (!fRes)
|
|
{
|
|
SetLastError(ERROR_DCAP_FORMAT_NOT_SUPPORTED);
|
|
LEAVE_DCAP(hcd);
|
|
return FALSE;
|
|
}
|
|
|
|
// Cache the bitmap size we're dealing with now
|
|
if (lpbmih->biCompression == BI_RGB)
|
|
hcd->dwcbBuffers = sizeof (CAPBUFFERHDR) + lpbmih->biWidth * lpbmih->biHeight * lpbmih->biBitCount / 8;
|
|
else
|
|
hcd->dwcbBuffers = sizeof (CAPBUFFERHDR) + lpbmih->biSizeImage;
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
// GetCaptureDevicePalette
|
|
// Gets the current palette from the capture device. The entries are returned to
|
|
// the caller who normally calls CreatePalette on the structure. It may, however,
|
|
// want to translate the palette entries into some preexisting palette or identity
|
|
// palette before calling CreatePalette, hence the need for passing back the entries.
|
|
|
|
BOOL
|
|
DCAPI
|
|
GetCaptureDevicePalette(
|
|
HCAPDEV hcd,
|
|
CAPTUREPALETTE* lpcp
|
|
)
|
|
{
|
|
BOOL fRes;
|
|
|
|
FX_ENTRY("GetCaptureDevicePalette");
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
ENTER_DCAP(hcd);
|
|
|
|
// The caller doesn't have to initialize the structure.
|
|
// The driver should fill it in, but it may want it preininitialized so we do that here.
|
|
lpcp->wVersion = 0x0300;
|
|
lpcp->wcEntries = 256;
|
|
|
|
// Get the palette entries from the driver and return to the user
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
fRes = _GetVideoPalette(hcd->hvideoIn, lpcp, sizeof (CAPTUREPALETTE));
|
|
else
|
|
fRes = WDMGetVideoPalette(hcd->nDeviceIndex, lpcp, sizeof (CAPTUREPALETTE));
|
|
|
|
if (!fRes)
|
|
{
|
|
ERRORMESSAGE(("%s: No palette returned from driver\r\n", _fx_));
|
|
SetLastError(ERROR_DCAP_NO_DRIVER_SUPPORT);
|
|
LEAVE_DCAP(hcd);
|
|
return FALSE;
|
|
}
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
void
|
|
TerminateStreaming(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
DWORD dwTicks;
|
|
LPCAPBUFFER lpcbuf;
|
|
DWORD dwlpvh;
|
|
BOOL fRes;
|
|
|
|
FX_ENTRY("TerminateStreaming");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
StopStreaming(hcd);
|
|
|
|
if (!(hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB)) {
|
|
hcd->dwFlags |= HCAPDEV_STREAMING_PAUSED;
|
|
|
|
// Make sure we aren't streaming
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
#ifndef __NT_BUILD__
|
|
hcd->lpli->dwFlags |= LIF_STOPSTREAM;
|
|
#endif
|
|
_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_RESET, 0, 0);
|
|
}
|
|
else
|
|
WDMVideoStreamReset(hcd->nDeviceIndex);
|
|
|
|
dwTicks = GetTickCount();
|
|
lpcbuf = hcd->lpcbufList;
|
|
while (lpcbuf && GetTickCount() < dwTicks + 1000) {
|
|
dwlpvh = (DWORD)lpcbuf->vh.lpData - sizeof(CAPBUFFERHDR);
|
|
// 16:16 ptr to vh = 16:16 ptr to data - sizeof(CAPBUFFERHDR)
|
|
// 32bit ptr to vh = 32bit ptr to data - sizeof(CAPBUFFERHDR)
|
|
if (!(lpcbuf->vh.dwFlags & VHDR_DONE)) {
|
|
if (WaitForSingleObject(hcd->hevWait, 500) == WAIT_TIMEOUT) {
|
|
ERRORMESSAGE(("%s: Timeout waiting for all buffers done after DVM_STREAM_RESET\r\n", _fx_));
|
|
break; // looks like it isn't going to happen, so quit waiting
|
|
}
|
|
//else recheck done bit on current buffer
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE) && (lpcbuf->vh.dwFlags & VHDR_DONE) && (lpcbuf->vh.dwFlags & VHDR_PREPARED))
|
|
{
|
|
// AVICap32 clears the prepared flag even if the driver failed the operation - do the same thing
|
|
_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_UNPREPAREHEADER, dwlpvh, sizeof(VIDEOHDR));
|
|
lpcbuf->vh.dwFlags &= ~VHDR_PREPARED;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE) && (lpcbuf->vh.dwFlags & VHDR_PREPARED))
|
|
{
|
|
// AVICap32 clears the prepared flag even if the driver failed the operation - do the same thing
|
|
_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_UNPREPAREHEADER, dwlpvh, sizeof(VIDEOHDR));
|
|
lpcbuf->vh.dwFlags &= ~VHDR_PREPARED;
|
|
}
|
|
lpcbuf = (LPCAPBUFFER)lpcbuf->vh.dwUser; // next buffer
|
|
}
|
|
}
|
|
|
|
DEBUGMSG(ZONE_STREAMING, ("%s: Done trying to clear buffers\r\n", _fx_));
|
|
|
|
// Clean up flags in order to reuse buffers - drivers do not like to be
|
|
// given buffers with a dirty dwFlags at the start of streaming...
|
|
for (lpcbuf = hcd->lpcbufList ; lpcbuf ; lpcbuf = (LPCAPBUFFER)lpcbuf->vh.dwUser)
|
|
lpcbuf->vh.dwFlags = 0;
|
|
|
|
// Terminate streaming with the driver
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
fRes = _UninitializeVideoStream(hcd->hvideoIn);
|
|
else
|
|
fRes = WDMUnInitializeVideoStream(hcd->nDeviceIndex);
|
|
|
|
if (!fRes)
|
|
{
|
|
ERRORMESSAGE(("%s: Error returned from XXXUninitializeVideoStream\r\n", _fx_));
|
|
}
|
|
}
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
}
|
|
|
|
|
|
BOOL
|
|
ReinitStreaming(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
LPCAPBUFFER lpcbuf;
|
|
DWORD dwlpvh;
|
|
BOOL fRes;
|
|
|
|
FX_ENTRY("ReinitStreaming");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
if (!(hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB)) {
|
|
// Tell the driver to prepare for streaming. This sets up the callback
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
#ifdef __NT_BUILD__
|
|
fRes = _InitializeVideoStream(hcd->hvideoIn, hcd->dw_usecperframe, (DWORD)hcd);
|
|
#else
|
|
fRes = _InitializeVideoStream(hcd->hvideoIn, hcd->dw_usecperframe, (DWORD)hcd->wselLockedInfo << 16);
|
|
#endif
|
|
else
|
|
fRes = WDMInitializeVideoStream(hcd, hcd->nDeviceIndex, hcd->dw_usecperframe);
|
|
|
|
if (!fRes)
|
|
{
|
|
ERRORMESSAGE(("%s: Error returned from XXXInitializeVideoStream\r\n", _fx_));
|
|
SetLastError(ERROR_DCAP_BAD_FRAMERATE);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return FALSE;
|
|
}
|
|
// Sleep (10);
|
|
|
|
hcd->dwFlags &= ~HCAPDEV_STREAMING_PAUSED;
|
|
|
|
// If any buffers are not marked DONE, then give them back to the driver; let all
|
|
// DONE buffers get processed by the app first
|
|
for (lpcbuf = hcd->lpcbufList ; lpcbuf ; lpcbuf = (LPCAPBUFFER)lpcbuf->vh.dwUser) {
|
|
if (!(lpcbuf->vh.dwFlags & VHDR_DONE)) {
|
|
dwlpvh = (DWORD)lpcbuf->vh.lpData - sizeof(CAPBUFFERHDR);
|
|
// 16:16 ptr to vh = 16:16 ptr to data - sizeof(CAPBUFFERHDR)
|
|
// 32bit ptr to vh = 32bit ptr to data - sizeof(CAPBUFFERHDR)
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
// AVICap32 sets the prepared flag even if the driver failed the operation - do the same thing
|
|
_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_PREPAREHEADER, dwlpvh, sizeof(VIDEOHDR));
|
|
lpcbuf->vh.dwFlags |= VHDR_PREPARED;
|
|
fRes = (_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_ADDBUFFER, dwlpvh, sizeof(VIDEOHDR)) == DV_ERR_OK);
|
|
}
|
|
else
|
|
fRes = WDMVideoStreamAddBuffer(hcd->nDeviceIndex, (PVOID)dwlpvh);
|
|
|
|
if (!fRes)
|
|
{
|
|
DEBUGMSG(ZONE_STREAMING, ("%s: Failed with lpcbuf=0x%08lX, lpcbuf->vh.lpData=0x%08lX, dwlpvh=0x%08lX\r\n", _fx_, lpcbuf, lpcbuf->vh.lpData, dwlpvh));
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
DEBUGMSG(ZONE_STREAMING, ("%s: Succeeded with lpcbuf=0x%08lX, lpcbuf->vh.lpData=0x%08lX, dwlpvh=0x%08lX\r\n", _fx_, lpcbuf, lpcbuf->vh.lpData, dwlpvh));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
// CaptureDeviceDialog
|
|
// Puts up one of the driver's dialogs for the user to twiddle.
|
|
// If I can figure out ANY way to avoid this, I will.
|
|
|
|
BOOL DCAPI
|
|
CaptureDeviceDialog(
|
|
HCAPDEV hcd,
|
|
HWND hwndParent,
|
|
DWORD dwFlags,
|
|
LPBITMAPINFOHEADER lpbmih //OPTIONAL
|
|
)
|
|
{
|
|
DWORD dwDriverFlags = 0;
|
|
HVIDEO hvid;
|
|
DWORD dwSize;
|
|
LPBITMAPINFOHEADER lpbmihCur;
|
|
#ifdef _DEBUG
|
|
LPBITMAPINFOHEADER lpbmihPre = NULL;
|
|
#endif
|
|
BOOL res = TRUE;
|
|
|
|
FX_ENTRY("CaptureDeviceDialog");
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
if (hcd->dwFlags & HCAPDEV_IN_DRIVER_DIALOG)
|
|
return FALSE; // don't allow re-entering
|
|
|
|
ENTER_DCAP(hcd);
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
// See if we are just querying the driver for existence
|
|
if (dwFlags & CAPDEV_DIALOG_QUERY)
|
|
dwDriverFlags |= VIDEO_DLG_QUERY;
|
|
|
|
// Select the correct channel to query
|
|
if (dwFlags & CAPDEV_DIALOG_SOURCE) {
|
|
hvid = hcd->hvideoCapture;
|
|
if (!(dwFlags & CAPDEV_DIALOG_QUERY)) {
|
|
dwDriverFlags |= VIDEO_DLG_QUERY;
|
|
if (_SendDriverMessage((HDRVR)hvid, DVM_DIALOG, (DWORD)hwndParent, dwDriverFlags) == DV_ERR_NOTSUPPORTED) {
|
|
hvid = hcd->hvideoIn;
|
|
}
|
|
dwDriverFlags &= ~VIDEO_DLG_QUERY;
|
|
}
|
|
}
|
|
else
|
|
hvid = hcd->hvideoIn;
|
|
|
|
// Don't stop streaming. This make the source dialog totally useless
|
|
// if the user can't see what is going on.
|
|
|
|
#ifdef _DEBUG
|
|
if (!lpbmih) {
|
|
dwSize = GetCaptureDeviceFormatHeaderSize(hcd);
|
|
if (lpbmihPre = (LPBITMAPINFOHEADER)LocalAlloc(LPTR, dwSize)) {
|
|
lpbmihPre->biSize = dwSize;
|
|
GetCaptureDeviceFormat(hcd, lpbmihPre);
|
|
}
|
|
lpbmih = lpbmihPre;
|
|
}
|
|
#endif
|
|
|
|
// Call the driver
|
|
hcd->dwFlags |= HCAPDEV_IN_DRIVER_DIALOG;
|
|
if (_SendDriverMessage((HDRVR)hvid, DVM_DIALOG, (DWORD)hwndParent, dwDriverFlags)) {
|
|
SetLastError(ERROR_DCAP_NO_DRIVER_SUPPORT);
|
|
res = FALSE; // restart still ok
|
|
}
|
|
else if (lpbmih) {
|
|
dwSize = GetCaptureDeviceFormatHeaderSize(hcd);
|
|
if (lpbmihCur = (LPBITMAPINFOHEADER)LocalAlloc(LPTR, dwSize)) {
|
|
lpbmihCur->biSize = dwSize;
|
|
GetCaptureDeviceFormat(hcd, lpbmihCur);
|
|
if (lpbmih->biSize != lpbmihCur->biSize ||
|
|
lpbmih->biWidth != lpbmihCur->biWidth ||
|
|
lpbmih->biHeight != lpbmihCur->biHeight ||
|
|
lpbmih->biBitCount != lpbmihCur->biBitCount ||
|
|
lpbmih->biCompression != lpbmihCur->biCompression)
|
|
{
|
|
ERRORMESSAGE(("%s: Format changed in dialog!!\r\n", _fx_));
|
|
#ifdef _DEBUG
|
|
DebugBreak();
|
|
#endif
|
|
// dialog changed format, so try to set it back
|
|
if (!SetCaptureDeviceFormat(hcd, lpbmih, 0, 0)) {
|
|
SetLastError (ERROR_DCAP_DIALOG_FORMAT);
|
|
res = FALSE;
|
|
}
|
|
}
|
|
LocalFree ((HANDLE)lpbmihCur);
|
|
}
|
|
#ifdef _DEBUG
|
|
if (lpbmih == lpbmihPre) {
|
|
LocalFree ((HANDLE)lpbmihPre);
|
|
lpbmih = NULL;
|
|
lpbmihPre = NULL;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
hcd->dwFlags &= ~HCAPDEV_IN_DRIVER_DIALOG;
|
|
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING) {
|
|
// The Intel Smart Video Recorder Pro stops streaming
|
|
// on exit from the source dialog (!?!?). Make sure
|
|
// we reset the streaming on any kind of device right
|
|
// after we exit the source dialog. I verified this on
|
|
// the CQC, ISVR Pro, Video Stinger and Video Blaster SE100.
|
|
// They all seem to take this pretty well...
|
|
TerminateStreaming(hcd);
|
|
if (ReinitStreaming(hcd))
|
|
StartStreaming(hcd);
|
|
else {
|
|
SetLastError(ERROR_DCAP_DIALOG_STREAM);
|
|
res = FALSE;
|
|
ERRORMESSAGE(("%s: Couldn't reinit streaming after dialog!\r\n", _fx_));
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// See if we are just querying the driver for existence
|
|
if (dwFlags & CAPDEV_DIALOG_QUERY)
|
|
{
|
|
// We only expose a settings dialog
|
|
if (dwFlags & CAPDEV_DIALOG_IMAGE)
|
|
{
|
|
SetLastError(ERROR_DCAP_NO_DRIVER_SUPPORT);
|
|
res = FALSE;
|
|
ERRORMESSAGE(("%s: Driver does not support this dialog!\r\n", _fx_));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!WDMShowSettingsDialog(hcd->nDeviceIndex, hwndParent))
|
|
{
|
|
SetLastError(ERROR_DCAP_NO_DRIVER_SUPPORT);
|
|
res = FALSE;
|
|
ERRORMESSAGE(("%s: Driver does not support this dialog!\r\n", _fx_));
|
|
}
|
|
}
|
|
|
|
hcd->dwFlags &= ~HCAPDEV_IN_DRIVER_DIALOG;
|
|
|
|
// No need to restart streaming on WDM devices tested so far
|
|
// Will add this feature if problems come up
|
|
}
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return res;
|
|
}
|
|
|
|
|
|
// InitializeStreaming
|
|
// Allocates all memory and other objects necessary for streaming.
|
|
|
|
BOOL
|
|
DCAPI
|
|
InitializeStreaming(
|
|
HCAPDEV hcd,
|
|
CAPSTREAM* lpcs,
|
|
DWORD flags
|
|
)
|
|
{
|
|
LPCAPBUFFER lpcbuf;
|
|
DWORD dwRound;
|
|
LPBITMAPINFOHEADER lpbmih;
|
|
BOOL bHaveBuffers = FALSE;
|
|
|
|
FX_ENTRY("InitializeStreaming");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
// It doesn't make sense to stream with less than 2 buffers
|
|
if (lpcs->ncCapBuffers < MIN_STREAMING_CAPTURE_BUFFERS ||
|
|
flags & 0xfffffffe ||
|
|
hcd->dwFlags & HCAPDEV_STREAMING_INITIALIZED)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return FALSE;
|
|
}
|
|
ENTER_DCAP(hcd);
|
|
hcd->dwFlags &= ~(HCAPDEV_STREAMING | HCAPDEV_STREAMING_INITIALIZED |
|
|
HCAPDEV_STREAMING_FRAME_GRAB | HCAPDEV_STREAMING_FRAME_TIME | HCAPDEV_STREAMING_PAUSED);
|
|
|
|
// Before allocating, make sure we have the current format.
|
|
// This sets our idea of the current size we need for the buffer by
|
|
// setting hcd->dwcbBuffers as a side effect
|
|
dwRound = GetCaptureDeviceFormatHeaderSize(hcd);
|
|
if (lpbmih = (LPBITMAPINFOHEADER)LocalAlloc(LPTR, dwRound)) {
|
|
lpbmih->biSize = dwRound;
|
|
GetCaptureDeviceFormat(hcd, lpbmih);
|
|
LocalFree ((HANDLE)lpbmih);
|
|
} else {
|
|
SetLastError(ERROR_OUTOFMEMORY);
|
|
goto Error;
|
|
}
|
|
|
|
// BUGBUG - add logic to determine if we should automatically use FRAME_GRAB mode
|
|
|
|
// Try allocating the number asked for
|
|
if (flags & STREAMING_PREFER_FRAME_GRAB) {
|
|
hcd->dwFlags |= HCAPDEV_STREAMING_FRAME_GRAB;
|
|
}
|
|
|
|
if (!allocateBuffers(hcd, lpcs->ncCapBuffers))
|
|
{
|
|
SetLastError(ERROR_OUTOFMEMORY);
|
|
goto Error;
|
|
}
|
|
|
|
// Create the event we need so we can signal at interrupt time
|
|
if (!(hcd->hevWait = CreateEvent(NULL, FALSE, FALSE, NULL))) {
|
|
ERRORMESSAGE(("%s: CreateEvent failed!\r\n", _fx_));
|
|
SetLastError(ERROR_OUTOFMEMORY);
|
|
goto Error;
|
|
}
|
|
|
|
// Init CS used to serialize buffer list management
|
|
InitializeCriticalSection(&hcd->bufferlistCS);
|
|
|
|
// We were given frames per second times 100. Converting this to
|
|
// usec per frame is 1/fps * 1,000,000 * 100. Here, do 1/fps * 1,000,000,000
|
|
// to give us an extra digit to do rounding on, then do a final / 10
|
|
hcd->dw_usecperframe = (unsigned)1000000000 / (unsigned)lpcs->nFPSx100;
|
|
dwRound = hcd->dw_usecperframe % 10; // Could have done with one less divide,
|
|
hcd->dw_usecperframe /= 10; // but this is clearer, and this is just
|
|
// an init call...
|
|
if (dwRound >= 5)
|
|
hcd->dw_usecperframe++;
|
|
|
|
hcd->lpCurrent = NULL;
|
|
hcd->lpHead = NULL;
|
|
hcd->lpTail = NULL;
|
|
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB) {
|
|
#ifndef __NT_BUILD__
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
hcd->lpli->pevWait = 0;
|
|
#endif
|
|
|
|
// link the buffers into the available list
|
|
// start with empty list
|
|
hcd->lpHead = (LPCAPBUFFER)(((LPBYTE)&hcd->lpHead) - sizeof(VIDEOHDR)); // fake CAPBUFFERHDR
|
|
hcd->lpTail = (LPCAPBUFFER)(((LPBYTE)&hcd->lpHead) - sizeof(VIDEOHDR)); // fake CAPBUFFERHDR
|
|
|
|
// now insert the buffers
|
|
for (lpcbuf = hcd->lpcbufList ; lpcbuf ; lpcbuf = (LPCAPBUFFER)lpcbuf->vh.dwUser) {
|
|
lpcbuf->lpPrev = hcd->lpTail;
|
|
hcd->lpTail = lpcbuf;
|
|
lpcbuf->lpNext = lpcbuf->lpPrev->lpNext;
|
|
lpcbuf->lpPrev->lpNext = lpcbuf;
|
|
lpcbuf->vh.dwFlags |= VHDR_INQUEUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
#ifndef __NT_BUILD__
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
hcd->lpli->pevWait = (DWORD)OpenVxDHandle(hcd->hevWait);
|
|
|
|
// Lock down the LOCKEDINFO structure
|
|
if (!_LockBuffer(hcd->wselLockedInfo))
|
|
{
|
|
SetLastError(ERROR_OUTOFMEMORY);
|
|
goto Error;
|
|
}
|
|
hcd->lpli->lp1616Head = 0;
|
|
hcd->lpli->lp1616Tail = 0;
|
|
hcd->lpli->lp1616Current = 0;
|
|
}
|
|
#endif
|
|
|
|
if (!ReinitStreaming(hcd))
|
|
goto Error;
|
|
}
|
|
lpcs->hevWait = hcd->hevWait;
|
|
|
|
// Flag that streaming is initialized
|
|
hcd->dwFlags |= HCAPDEV_STREAMING_INITIALIZED;
|
|
|
|
LEAVE_DCAP(hcd);
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return TRUE;
|
|
|
|
Error:
|
|
freeBuffers(hcd);
|
|
if (hcd->hevWait)
|
|
{
|
|
CloseHandle(hcd->hevWait);
|
|
#ifndef __NT_BUILD__
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE) && hcd->lpli->pevWait)
|
|
_CloseVxDHandle(hcd->lpli->pevWait);
|
|
#endif
|
|
}
|
|
LEAVE_DCAP(hcd);
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
// SetStreamFrameRate
|
|
// Changes the frame rate of a stream initialized channel.
|
|
// PhilF-: This call is not used by NMCAP and NAC. So remove it or
|
|
// start using it.
|
|
BOOL
|
|
DCAPI
|
|
SetStreamFrameRate(
|
|
HCAPDEV hcd,
|
|
int nFPSx100
|
|
)
|
|
{
|
|
DWORD dwNew, dwRound;
|
|
BOOL restart;
|
|
BOOL res = TRUE;
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
if (!(hcd->dwFlags & HCAPDEV_STREAMING_INITIALIZED))
|
|
{
|
|
// must already have the channel initialized for streaming
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
ENTER_DCAP(hcd);
|
|
restart = (hcd->dwFlags & HCAPDEV_STREAMING);
|
|
|
|
// We were given frames per second times 100. Converting this to
|
|
// usec per frame is 1/fps * 1,000,000 * 100. Here, do 1/fps * 1,000,000,000
|
|
// to give us an extra digit to do rounding on, then do a final / 10
|
|
dwNew = (unsigned)1000000000 / (unsigned)nFPSx100;
|
|
dwRound = dwNew % 10; // Could have done with one less divide,
|
|
dwNew /= 10; // but this is clearer, and this is just an init call...
|
|
if (dwRound >= 5)
|
|
dwNew++;
|
|
|
|
if (dwNew != hcd->dw_usecperframe) {
|
|
|
|
TerminateStreaming(hcd);
|
|
|
|
hcd->dw_usecperframe = dwNew;
|
|
|
|
res = ReinitStreaming(hcd);
|
|
|
|
if (restart && res)
|
|
StartStreaming(hcd);
|
|
}
|
|
LEAVE_DCAP(hcd);
|
|
return res;
|
|
}
|
|
|
|
|
|
// UninitializeStreaming
|
|
// Frees all memory and objects associated with streaming.
|
|
|
|
BOOL
|
|
DCAPI
|
|
UninitializeStreaming(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
DWORD dwTicks;
|
|
LPCAPBUFFER lpcbuf;
|
|
|
|
FX_ENTRY("UninitializeStreaming");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
if (!(hcd->dwFlags & HCAPDEV_STREAMING_INITIALIZED)) {
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return FALSE;
|
|
}
|
|
|
|
ENTER_DCAP(hcd);
|
|
|
|
TerminateStreaming(hcd);
|
|
|
|
#ifndef __NT_BUILD__
|
|
if (!(hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB) && !(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
// Unlock our locked structure
|
|
_UnlockBuffer(hcd->wselLockedInfo);
|
|
|
|
// Free the event
|
|
_CloseVxDHandle(hcd->lpli->pevWait);
|
|
}
|
|
#endif
|
|
|
|
DeleteCriticalSection(&hcd->bufferlistCS);
|
|
CloseHandle(hcd->hevWait);
|
|
|
|
// BUGBUG - what about app still owning buffers
|
|
// Loop through freeing all the buffers
|
|
freeBuffers(hcd);
|
|
hcd->dwFlags &= ~(HCAPDEV_STREAMING_INITIALIZED + HCAPDEV_STREAMING_PAUSED);
|
|
|
|
LEAVE_DCAP(hcd);
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
void
|
|
CALLBACK
|
|
TimeCallback(
|
|
UINT uID,
|
|
UINT uMsg,
|
|
HCAPDEV hcd,
|
|
DWORD dw1,
|
|
DWORD dw2
|
|
)
|
|
{
|
|
hcd->dwFlags |= HCAPDEV_STREAMING_FRAME_TIME; // flag time for a new frame
|
|
SetEvent (hcd->hevWait); // signal client to initiate frame grab
|
|
}
|
|
|
|
// StartStreaming
|
|
// Begins streaming.
|
|
|
|
BOOL
|
|
DCAPI
|
|
StartStreaming(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
BOOL fRet;
|
|
DWORD dwRet;
|
|
|
|
FX_ENTRY("StartStreaming");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
ENTER_DCAP(hcd);
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB) {
|
|
fRet = ((hcd->timerID = timeSetEvent(hcd->dw_usecperframe/1000, 5,
|
|
(LPTIMECALLBACK)&TimeCallback,
|
|
(DWORD)hcd, TIME_PERIODIC)) != 0);
|
|
} else {
|
|
int i;
|
|
|
|
fRet = FALSE;
|
|
|
|
#ifndef __NT_BUILD__
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
hcd->lpli->dwFlags &= ~LIF_STOPSTREAM;
|
|
#endif
|
|
|
|
for (i = 0; i < 5; i++) {
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
dwRet = _SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_START, 0, 0);
|
|
fRet = (dwRet == DV_ERR_OK);
|
|
if (dwRet)
|
|
{
|
|
ERRORMESSAGE(("%s: DVM_STREAM_START failed, return code was %ld\r\n", _fx_, dwRet));
|
|
}
|
|
}
|
|
else
|
|
fRet = WDMVideoStreamStart(hcd->nDeviceIndex);
|
|
|
|
if (fRet)
|
|
break;
|
|
else if (i > 1)
|
|
Sleep(10);
|
|
}
|
|
}
|
|
|
|
if (fRet)
|
|
hcd->dwFlags |= HCAPDEV_STREAMING;
|
|
|
|
LEAVE_DCAP(hcd);
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return fRet;
|
|
}
|
|
|
|
|
|
// StopStreaming
|
|
// Stops streaming but doesn't free any memory associated with streaming
|
|
// so that it can be restarted with StartStreaming.
|
|
|
|
BOOL
|
|
DCAPI
|
|
StopStreaming(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
BOOL fRet;
|
|
|
|
FX_ENTRY("StopStreaming");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
ENTER_DCAP(hcd);
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB) {
|
|
timeKillEvent(hcd->timerID);
|
|
hcd->dwFlags &= ~HCAPDEV_STREAMING;
|
|
|
|
// grab CS to ensure that no frame grab is in progress
|
|
EnterCriticalSection(&hcd->bufferlistCS);
|
|
LeaveCriticalSection(&hcd->bufferlistCS);
|
|
fRet = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
fRet = (_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_STOP, 0, 0) == DV_ERR_OK);
|
|
else
|
|
fRet = WDMVideoStreamStop(hcd->nDeviceIndex);
|
|
}
|
|
|
|
if (fRet)
|
|
hcd->dwFlags &= ~HCAPDEV_STREAMING;
|
|
|
|
LEAVE_DCAP(hcd);
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return fRet;
|
|
}
|
|
|
|
|
|
// GetNextReadyBuffer
|
|
// Called by the app to find the next buffer that has been marked as
|
|
// done by the driver and has data to be displayed.
|
|
|
|
LPSTR
|
|
DCAPI
|
|
GetNextReadyBuffer(
|
|
HCAPDEV hcd,
|
|
CAPFRAMEINFO* lpcfi
|
|
)
|
|
{
|
|
LPCAPBUFFER lpcbuf;
|
|
DWORD dwlpvh;
|
|
BOOL fRet;
|
|
|
|
FX_ENTRY("GetNextReadyBuffer");
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
ENTER_DCAP(hcd);
|
|
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB) {
|
|
lpcbuf = (LPCAPBUFFER)hcd->lpHead;
|
|
if ((hcd->dwFlags & HCAPDEV_STREAMING_FRAME_TIME) &&
|
|
(lpcbuf != (LPCAPBUFFER)(((LPBYTE)&hcd->lpHead) - sizeof(VIDEOHDR)))) /* fake CAPBUFFERHDR */
|
|
{
|
|
// remove buffer from list
|
|
EnterCriticalSection(&hcd->bufferlistCS);
|
|
hcd->dwFlags &= ~HCAPDEV_STREAMING_FRAME_TIME;
|
|
lpcbuf->lpPrev->lpNext = lpcbuf->lpNext;
|
|
lpcbuf->lpNext->lpPrev = lpcbuf->lpPrev;
|
|
lpcbuf->vh.dwFlags &= ~VHDR_INQUEUE;
|
|
lpcbuf->vh.dwFlags |= VHDR_DONE;
|
|
LeaveCriticalSection(&hcd->bufferlistCS);
|
|
dwlpvh = (DWORD)lpcbuf->vh.lpData - sizeof(CAPBUFFERHDR);
|
|
// 16:16 ptr to vh = 16:16 ptr to data - sizeof(CAPBUFFERHDR)
|
|
// 32bit ptr to vh = 32bit ptr to data - sizeof(CAPBUFFERHDR)
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
fRet = (SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_FRAME, dwlpvh, sizeof(VIDEOHDR)) == DV_ERR_OK);
|
|
else
|
|
fRet = WDMGetFrame(hcd->nDeviceIndex, (PVOID)dwlpvh);
|
|
|
|
if (!fRet)
|
|
{
|
|
// put buffer back into list
|
|
EnterCriticalSection(&hcd->bufferlistCS);
|
|
lpcbuf->lpPrev = hcd->lpTail;
|
|
hcd->lpTail = lpcbuf;
|
|
lpcbuf->lpNext = lpcbuf->lpPrev->lpNext;
|
|
lpcbuf->lpPrev->lpNext = lpcbuf;
|
|
lpcbuf->vh.dwFlags |= VHDR_INQUEUE;
|
|
LeaveCriticalSection(&hcd->bufferlistCS);
|
|
lpcbuf = NULL;
|
|
}
|
|
} else
|
|
lpcbuf = NULL;
|
|
|
|
} else {
|
|
|
|
#ifdef __NT_BUILD__
|
|
// If the current pointer is NULL, there is no frame ready so bail
|
|
if (!hcd->lpCurrent)
|
|
lpcbuf = NULL;
|
|
else {
|
|
// Get the linear address of the buffer
|
|
lpcbuf = hcd->lpCurrent;
|
|
|
|
// Move to the next ready buffer
|
|
hcd->lpCurrent = lpcbuf->lpPrev;
|
|
}
|
|
#else
|
|
//--------------------
|
|
// Buffer ready queue:
|
|
// We maintain a doubly-linked list of our buffers so that we can buffer up
|
|
// multiple ready frames when the app isn't ready to handle them. Two things
|
|
// complicate what ought to be a very simple thing: (1) Thunking issues: the pointers
|
|
// used on the 16-bit side are 16:16 (2) Interrupt time issues: the FrameCallback
|
|
// gets called at interrupt time. GetNextReadyBuffer must handle the fact that
|
|
// buffers get added to the list asynchronously.
|
|
//
|
|
// To handle this, the scheme implemented here is to have a double-linked list
|
|
// of buffers with all insertions and deletions happening in FrameCallback
|
|
// (interrupt time). This allows the GetNextReadyBuffer routine to simply
|
|
// find the previous block on the list any time it needs a new buffer without
|
|
// fear of getting tromped (as would be the case if it had to dequeue buffers).
|
|
// The FrameCallback routine is responsible to dequeue blocks that GetNextReadyBuffer
|
|
// is done with. Dequeueing is simple since we don't need to unlink the blocks:
|
|
// no code ever walks the list! All we have to do is move the tail pointer back up
|
|
// the list. All the pointers, head, tail, next, prev, are all 16:16 pointers
|
|
// since all the list manipulation is on the 16-bit side AND because MapSL is
|
|
// much more efficient and safer than MapLS since MapLS has to allocate selectors.
|
|
//--------------------
|
|
|
|
// If the current pointer is NULL, there is no frame ready so bail
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
if (!hcd->lpli->lp1616Current)
|
|
lpcbuf = NULL;
|
|
else {
|
|
// Get the linear address of the buffer
|
|
lpcbuf = (LPCAPBUFFER)MapSL(hcd->lpli->lp1616Current);
|
|
|
|
// Move to the next ready buffer
|
|
hcd->lpli->lp1616Current = lpcbuf->lp1616Prev;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// If the current pointer is NULL, there is no frame ready so bail
|
|
if (!hcd->lpCurrent)
|
|
lpcbuf = NULL;
|
|
else {
|
|
// Get the linear address of the buffer
|
|
lpcbuf = hcd->lpCurrent;
|
|
|
|
// Move to the next ready buffer
|
|
hcd->lpCurrent = lpcbuf->lpPrev;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
if (!lpcbuf) {
|
|
lpcfi->lpData = NULL;
|
|
DEBUGMSG(ZONE_STREAMING, ("\r\n { %s: Fails with lpcbuf=NULL\r\n", _fx_));
|
|
LEAVE_DCAP(hcd);
|
|
return NULL;
|
|
}
|
|
|
|
// Build the CAPFRAMEINFO from the VIDEOHDR information
|
|
lpcfi->lpData = ((LPSTR)lpcbuf) + sizeof(CAPBUFFERHDR);
|
|
lpcfi->dwcbData = lpcbuf->vh.dwBytesUsed;
|
|
lpcfi->dwTimestamp = lpcbuf->vh.dwTimeCaptured;
|
|
lpcfi->dwFlags = 0;
|
|
lpcbuf->lpNext = NULL;
|
|
|
|
DEBUGMSG(ZONE_STREAMING, ("\r\n { %s: Succeeded with lpcbuf=0x%08lX\r\n lpcbuf->vh.lpData=0x%08lX\r\n lpcbuf->vh.dwBufferLength=%ld\r\n", _fx_, lpcbuf, lpcbuf->vh.lpData, lpcbuf->vh.dwBufferLength));
|
|
DEBUGMSG(ZONE_STREAMING, (" lpcbuf->vh.dwBytesUsed=%ld\r\n lpcbuf->vh.dwTimeCaptured=%ld\r\n lpcbuf->vh.dwFlags=0x%08lX\r\n", lpcbuf->vh.dwBytesUsed, lpcbuf->vh.dwTimeCaptured, lpcbuf->vh.dwFlags));
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return lpcfi->lpData;
|
|
}
|
|
|
|
|
|
// PutBufferIntoStream
|
|
// When the app is finished using a buffer, it must allow it to be requeued
|
|
// by calling this API.
|
|
|
|
BOOL
|
|
DCAPI
|
|
PutBufferIntoStream(
|
|
HCAPDEV hcd,
|
|
BYTE* lpBits
|
|
)
|
|
{
|
|
LPCAPBUFFER lpcbuf;
|
|
DWORD dwlpvh;
|
|
BOOL res;
|
|
|
|
FX_ENTRY("PutBufferIntoStream");
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
ENTER_DCAP(hcd);
|
|
// From the CAPFRAMEINFO, find the appropriate CAPBUFFER pointer
|
|
lpcbuf = (LPCAPBUFFER)(lpBits - sizeof(CAPBUFFERHDR));
|
|
|
|
DEBUGMSG(ZONE_STREAMING, ("\r\n%s: Returning buffer lpcbuf=0x%08lX\r\n", _fx_, lpcbuf));
|
|
|
|
lpcbuf->vh.dwFlags &= ~VHDR_DONE; // mark that app no longer owns buffer
|
|
if (hcd->dwFlags & HCAPDEV_STREAMING_FRAME_GRAB) {
|
|
EnterCriticalSection(&hcd->bufferlistCS);
|
|
lpcbuf->lpPrev = hcd->lpTail;
|
|
hcd->lpTail = lpcbuf;
|
|
lpcbuf->lpNext = lpcbuf->lpPrev->lpNext;
|
|
lpcbuf->lpPrev->lpNext = lpcbuf;
|
|
lpcbuf->vh.dwFlags |= VHDR_INQUEUE;
|
|
res = TRUE;
|
|
LeaveCriticalSection(&hcd->bufferlistCS);
|
|
}
|
|
else if (!(hcd->dwFlags & HCAPDEV_STREAMING_PAUSED)) {
|
|
// if streaming is paused, then just return with the busy bit cleared, we'll add the
|
|
// buffer into the stream in ReinitStreaming
|
|
//
|
|
// if streaming isn't paused, then call the driver to add the buffer
|
|
dwlpvh = (DWORD)lpcbuf->vh.lpData - sizeof(CAPBUFFERHDR);
|
|
// 16:16 ptr to vh = 16:16 ptr to data - sizeof(CAPBUFFERHDR)
|
|
// 32bit ptr to vh = 32bit ptr to data - sizeof(CAPBUFFERHDR)
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
res = (_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_STREAM_ADDBUFFER, dwlpvh, sizeof(VIDEOHDR)) == DV_ERR_OK);
|
|
else
|
|
res = WDMVideoStreamAddBuffer(hcd->nDeviceIndex, (PVOID)dwlpvh);
|
|
|
|
if (res)
|
|
{
|
|
DEBUGMSG(ZONE_STREAMING, (" } %s: Succeeded with lpcbuf=0x%08lX\r\n lpcbuf->vh.lpData=0x%08lX\r\n dwlpvh=0x%08lX\r\n", _fx_, lpcbuf, lpcbuf->vh.lpData, dwlpvh));
|
|
}
|
|
else
|
|
{
|
|
DEBUGMSG(ZONE_STREAMING, (" } %s: Failed with lpcbuf=0x%08lX\r\n lpcbuf->vh.lpData=0x%08lX\r\n dwlpvh=0x%08lX\r\n", _fx_, lpcbuf, lpcbuf->vh.lpData, dwlpvh));
|
|
}
|
|
|
|
}
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return res;
|
|
}
|
|
|
|
|
|
// CaptureFrame
|
|
LPBYTE
|
|
DCAPI
|
|
CaptureFrame(
|
|
HCAPDEV hcd,
|
|
HFRAMEBUF hbuf
|
|
)
|
|
{
|
|
DWORD dwlpvh;
|
|
LPBYTE lpbuf;
|
|
BOOL fRet;
|
|
|
|
FX_ENTRY("CaptureFrame");
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
VALIDATE_CAPDEV(hcd);
|
|
|
|
ENTER_DCAP(hcd);
|
|
dwlpvh = (DWORD)hbuf->vh.lpData - sizeof(CAPBUFFERHDR);
|
|
// 16:16 ptr to vh = 16:16 ptr to data - sizeof(CAPBUFFERHDR)
|
|
// 32bit ptr to vh = 32bit ptr to data - sizeof(CAPBUFFERHDR)
|
|
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
fRet = (_SendDriverMessage((HDRVR)hcd->hvideoIn, DVM_FRAME, dwlpvh, sizeof(VIDEOHDR)) == DV_ERR_OK);
|
|
else
|
|
fRet = WDMGetFrame(hcd->nDeviceIndex, (PVOID)dwlpvh);
|
|
|
|
if (!fRet)
|
|
{
|
|
ERRORMESSAGE(("%s: DVM_FRAME failed!\r\n", _fx_));
|
|
lpbuf = NULL;
|
|
}
|
|
else
|
|
lpbuf = ((LPBYTE)hbuf) + sizeof(CAPBUFFERHDR); // return ptr to buffer immediately following hdr
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return lpbuf;
|
|
}
|
|
|
|
|
|
LPBYTE
|
|
DCAPI
|
|
GetFrameBufferPtr(
|
|
HCAPDEV hcd,
|
|
HFRAMEBUF hbuf
|
|
)
|
|
{
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
if (hbuf)
|
|
return ((LPBYTE)hbuf) + sizeof(CAPBUFFERHDR); // return ptr to buffer immediately following hdr
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
HFRAMEBUF
|
|
DCAPI
|
|
AllocFrameBuffer(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
LPCAPBUFFER hbuf = NULL;
|
|
DWORD dpBuf;
|
|
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
ENTER_DCAP(hcd);
|
|
|
|
#ifdef __NT_BUILD__
|
|
if (dpBuf = (DWORD)LocalAlloc(LPTR, hcd->dwcbBuffers)) {
|
|
hbuf = (LPCAPBUFFER)dpBuf;
|
|
#else
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
dpBuf = (DWORD)_AllocateLockableBuffer(hcd->dwcbBuffers) << 16;
|
|
hbuf = (LPCAPBUFFER)MapSL(dpBuf);
|
|
}
|
|
else
|
|
{
|
|
dpBuf = (DWORD)LocalAlloc(LPTR, hcd->dwcbBuffers);
|
|
hbuf = (LPCAPBUFFER)dpBuf;
|
|
}
|
|
|
|
if (dpBuf) {
|
|
#endif
|
|
// Initialize the VIDEOHDR structure
|
|
hbuf->vh.lpData = (LPBYTE)(dpBuf + sizeof(CAPBUFFERHDR));
|
|
hbuf->vh.dwBufferLength = hcd->dwcbBuffers - sizeof(CAPBUFFERHDR);
|
|
hbuf->vh.dwFlags = 0UL;
|
|
}
|
|
|
|
LEAVE_DCAP(hcd);
|
|
return (HFRAMEBUF)hbuf;
|
|
}
|
|
|
|
|
|
VOID
|
|
DCAPI
|
|
FreeFrameBuffer(
|
|
HCAPDEV hcd,
|
|
HFRAMEBUF hbuf
|
|
)
|
|
{
|
|
INIT_CAP_DEV_LIST();
|
|
|
|
if (hbuf)
|
|
{
|
|
ENTER_DCAP(hcd);
|
|
|
|
#ifdef __NT_BUILD__
|
|
LocalFree((HANDLE)hbuf);
|
|
#else
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
_FreeLockableBuffer(HIWORD((DWORD)hbuf->vh.lpData));
|
|
else
|
|
LocalFree((HANDLE)hbuf);
|
|
#endif
|
|
|
|
LEAVE_DCAP(hcd);
|
|
}
|
|
}
|
|
|
|
//=====================================================================
|
|
// Helper functions
|
|
|
|
HVIDEO
|
|
openVideoChannel(
|
|
DWORD dwDeviceID,
|
|
DWORD dwFlags
|
|
)
|
|
{
|
|
HVIDEO hvidRet = NULL;
|
|
VIDEO_OPEN_PARMS vop;
|
|
#ifdef __NT_BUILD__
|
|
WCHAR devName[MAX_PATH];
|
|
#else
|
|
#define LPWSTR LPSTR
|
|
#define devName g_aCapDevices[dwDeviceID]->szDeviceName
|
|
#endif
|
|
|
|
FX_ENTRY("openVideoChannel");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
// Validate parameters
|
|
if (!g_cDevices)
|
|
{
|
|
SetLastError(ERROR_DCAP_BAD_INSTALL);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return NULL;
|
|
}
|
|
if (dwDeviceID > (DWORD)g_cDevices)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return NULL;
|
|
}
|
|
|
|
// Prepare to call the driver
|
|
vop.dwSize = sizeof (VIDEO_OPEN_PARMS);
|
|
vop.fccType = OPEN_TYPE_VCAP;
|
|
vop.fccComp = 0L;
|
|
vop.dwVersion = VIDEOAPIVERSION;
|
|
vop.dwFlags = dwFlags; // In, Out, External In, External Out
|
|
vop.dwError = 0;
|
|
vop.dnDevNode = g_aCapDevices[dwDeviceID]->dwDevNode;
|
|
|
|
#ifdef __NT_BUILD__
|
|
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (LPSTR)&(g_aCapDevices[dwDeviceID]->szDeviceName),
|
|
-1, (LPWSTR)&devName, MAX_PATH);
|
|
#endif
|
|
|
|
hvidRet = (HVIDEO)_OpenDriver((LPWSTR)&devName, NULL, (LONG)&vop);
|
|
|
|
#ifndef NO_DRIVER_HACKS
|
|
if (!hvidRet) {
|
|
// backward compatibility hack
|
|
// Some drivers fail to open because of the extra fields that were added to
|
|
// VIDEO_OPEN_PARAMS struct for Win95. Therefore, if the open fails, try
|
|
// decrementing the dwSize field back to VFW1.1 size and try again. Also try
|
|
// decrementing the API version field.
|
|
|
|
vop.dwSize -= sizeof(DWORD) + sizeof(LPVOID)*2;
|
|
#if 0
|
|
while (--vop.dwVersion > 2 && !hvidRet)
|
|
#endif
|
|
while (--vop.dwVersion > 0 && !hvidRet)
|
|
hvidRet = (HVIDEO)_OpenDriver((LPWSTR)&devName, NULL, (LONG)&vop);
|
|
}
|
|
#endif //NO_DRIVER_HACKS
|
|
|
|
// BUGBUG [JonT] 31-Jul-96
|
|
// Translate error values from DV_ERR_* values
|
|
if (!hvidRet)
|
|
SetLastError(vop.dwError);
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return hvidRet;
|
|
}
|
|
|
|
|
|
// allocateBuffers
|
|
|
|
BOOL
|
|
allocateBuffers(
|
|
HCAPDEV hcd,
|
|
int nBuffers
|
|
)
|
|
{
|
|
int i;
|
|
LPCAPBUFFER lpcbuf;
|
|
DWORD dpBuf;
|
|
|
|
FX_ENTRY("allocateBuffers");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
// Try to allocate all they ask for
|
|
for (i = 0 ; i < nBuffers ; i++)
|
|
{
|
|
|
|
#ifdef __NT_BUILD__
|
|
if (!(dpBuf = (DWORD)LocalAlloc(LPTR, hcd->dwcbBuffers)))
|
|
goto Error;
|
|
else
|
|
lpcbuf = (LPCAPBUFFER)dpBuf;
|
|
#else
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
if (!(dpBuf = (DWORD)_AllocateLockableBuffer(hcd->dwcbBuffers) << 16) || !_LockBuffer((WORD)(dpBuf >> 16)))
|
|
goto Error;
|
|
else
|
|
lpcbuf = (LPCAPBUFFER)MapSL(dpBuf);
|
|
}
|
|
else
|
|
{
|
|
if (!(dpBuf = (DWORD)LocalAlloc(LPTR, hcd->dwcbBuffers)))
|
|
goto Error;
|
|
else
|
|
lpcbuf = (LPCAPBUFFER)dpBuf;
|
|
}
|
|
#endif
|
|
|
|
// Initialize the VIDEOHDR structure
|
|
lpcbuf->vh.lpData = (LPBYTE)(dpBuf + sizeof(CAPBUFFERHDR));
|
|
lpcbuf->vh.dwUser = (DWORD)hcd->lpcbufList;
|
|
hcd->lpcbufList = lpcbuf;
|
|
lpcbuf->vh.dwBufferLength = hcd->dwcbBuffers - sizeof(CAPBUFFERHDR);
|
|
lpcbuf->vh.dwFlags = 0UL;
|
|
}
|
|
|
|
#ifdef _DEBUG
|
|
// Show buffer map
|
|
DEBUGMSG(ZONE_STREAMING, ("%s: Streaming Buffer map:\r\n", _fx_));
|
|
DEBUGMSG(ZONE_STREAMING, ("Root: hcd->lpcbufList=0x%08lX\r\n", hcd->lpcbufList));
|
|
for (i = 0, lpcbuf=hcd->lpcbufList ; i < nBuffers ; i++, lpcbuf=(LPCAPBUFFER)lpcbuf->vh.dwUser)
|
|
{
|
|
DEBUGMSG(ZONE_STREAMING, ("Buffer[%ld]: lpcbuf=0x%08lX\r\n lpcbuf->vh.lpData=0x%08lX\r\n", i, lpcbuf, lpcbuf->vh.lpData));
|
|
DEBUGMSG(ZONE_STREAMING, (" lpcbuf->vh.dwBufferLength=%ld\r\n lpcbuf->vh.dwBytesUsed=%ld\r\n", lpcbuf->vh.dwBufferLength, lpcbuf->vh.dwBytesUsed));
|
|
DEBUGMSG(ZONE_STREAMING, (" lpcbuf->vh.dwTimeCaptured=%ld\r\n lpcbuf->vh.dwUser=0x%08lX\r\n", lpcbuf->vh.dwTimeCaptured, lpcbuf->vh.dwUser));
|
|
}
|
|
#endif
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
|
|
return TRUE;
|
|
|
|
// In the error case, we have to get rid of this page locked memory
|
|
Error:
|
|
freeBuffers(hcd);
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
// freeBuffers
|
|
|
|
void
|
|
freeBuffers(
|
|
HCAPDEV hcd
|
|
)
|
|
{
|
|
LPCAPBUFFER lpcbuf;
|
|
|
|
FX_ENTRY("freeBuffers");
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - Begin\r\n", _fx_));
|
|
|
|
while (hcd->lpcbufList)
|
|
{
|
|
lpcbuf = hcd->lpcbufList;
|
|
hcd->lpcbufList = (LPCAPBUFFER)lpcbuf->vh.dwUser;
|
|
|
|
#ifdef __NT_BUILD__
|
|
LocalFree((HANDLE)lpcbuf);
|
|
#else
|
|
if (!(hcd->dwFlags & WDM_CAPTURE_DEVICE))
|
|
{
|
|
_UnlockBuffer(HIWORD((DWORD)lpcbuf->vh.lpData));
|
|
_FreeLockableBuffer(HIWORD((DWORD)lpcbuf->vh.lpData));
|
|
}
|
|
else
|
|
LocalFree((HANDLE)lpcbuf);
|
|
#endif
|
|
}
|
|
|
|
DEBUGMSG(ZONE_CALLS, ("%s() - End\r\n", _fx_));
|
|
}
|
|
|
|
|