static void GetAmmoTextLengths(player_t *CPlayer, int& ammocur, int& ammomax)
{
for (auto type : orderedammos)
{
auto ammoitem = CPlayer->mo->FindInventory(type);
auto inv = nullptr == ammoitem
? static_cast<AInventory*>(GetDefaultByType(type))
: ammoitem;
assert(nullptr != inv);
ammocur = MAX(ammocur, nullptr == ammoitem ? 0 : ammoitem->Amount);
ammomax = MAX(ammomax, inv->MaxAmount);
}
ammocur = GetDigitCount(ammocur);
ammomax = GetDigitCount(ammomax);
}
/*
Brute-force device detection, using a base device name (eg: \\.\WaveOut).
This will add the device number as a suffix to the end of the string and
attempt to open the device based on that name. On success, it will
increment the device number and repeat this process.
When it runs out of devices, it will give up.
*/
MMRESULT
DetectNt4SoundDevices(
IN MMDEVICE_TYPE DeviceType,
IN PWSTR BaseDeviceName,
IN SOUND_DEVICE_DETECTED_PROC SoundDeviceDetectedProc)
{
ULONG DeviceNameLength = 0;
PWSTR DeviceName = NULL;
ULONG Index = 0;
HANDLE DeviceHandle;
BOOLEAN DoSearch = TRUE;
VALIDATE_MMSYS_PARAMETER( IsValidSoundDeviceType(DeviceType) );
DeviceNameLength = wcslen(BaseDeviceName);
/* Consider the length of the number */
DeviceNameLength += GetDigitCount(Index);
DeviceName = AllocateWideString(DeviceNameLength);
if ( ! DeviceName )
{
return MMSYSERR_NOMEM;
}
while ( DoSearch )
{
/* Nothing like a nice clean device name */
ZeroWideString(DeviceName);
wsprintf(DeviceName, L"%ls%d", BaseDeviceName, Index);
if ( OpenKernelSoundDeviceByName(DeviceName,
TRUE,
&DeviceHandle) == MMSYSERR_NOERROR )
{
/* Notify the callback function */
SND_TRACE(L"Found device: %wS\n", DeviceName);
SoundDeviceDetectedProc(DeviceType, DeviceName);
CloseHandle(DeviceHandle);
++ Index;
}
else
{
DoSearch = FALSE;
}
}
FreeMemory(DeviceName);
return MMSYSERR_NOERROR;
}
/*
Open one of the Device sub-keys belonging to the sound driver.
NT4 only.
*/
MMRESULT
OpenSoundDeviceRegKey(
IN LPWSTR ServiceName,
IN DWORD DeviceIndex,
OUT PHKEY KeyHandle)
{
SIZE_T PathLength;
PWCHAR RegPath;
VALIDATE_MMSYS_PARAMETER( ServiceName );
VALIDATE_MMSYS_PARAMETER( KeyHandle );
/*
Work out the space required to hold the path:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
sndblst\
Parameters\
Device123\
*/
PathLength = wcslen(REG_SERVICES_KEY_NAME_U) + 1
+ wcslen(ServiceName) + 1
+ wcslen(REG_PARAMETERS_KEY_NAME_U) + 1
+ wcslen(REG_DEVICE_KEY_NAME_U)
+ GetDigitCount(DeviceIndex);
/* Allocate storage for the string */
RegPath = AllocateWideString(PathLength);
if ( ! RegPath )
{
return MMSYSERR_NOMEM;
}
/* Write the path */
wsprintf(RegPath,
L"%ls\\%ls\\%ls\\%ls%d",
REG_SERVICES_KEY_NAME_U,
ServiceName,
REG_PARAMETERS_KEY_NAME_U,
REG_DEVICE_KEY_NAME_U,
DeviceIndex);
SND_TRACE(L"Opening reg key: %wS\n", RegPath);
/* Perform the open */
if ( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
RegPath,
0,
KEY_READ,
KeyHandle) != ERROR_SUCCESS )
{
/* Couldn't open the key */
SND_ERR(L"Failed to open reg key: %wS\n", RegPath);
FreeMemory(RegPath);
return MMSYSERR_ERROR;
}
FreeMemory(RegPath);
return MMSYSERR_NOERROR;
}
