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[WDMAUD.DRV]

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- Add support for Opening/Querying/Closing registry keys within the mmixer library

svn path=/trunk/; revision=44647
This commit is contained in:
Johannes Anderwald
2009-12-18 10:42:29 +00:00
parent 82dfe03d66
commit af23bde581
1 changed files with 87 additions and 6 deletions
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reactos/dll/win32/wdmaud.drv/mmixer.c
+87 -6
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@@ -16,7 +16,10 @@ VOID Free(PVOID Block);
VOID Copy(PVOID Src, PVOID Dst, ULONG NumBytes);
MIXER_STATUS Open(IN LPWSTR DevicePath, OUT PHANDLE hDevice);
MIXER_STATUS Control(IN HANDLE hMixer, IN ULONG dwIoControlCode, IN PVOID lpInBuffer, IN ULONG nInBufferSize, OUT PVOID lpOutBuffer, ULONG nOutBufferSize, PULONG lpBytesReturned);
MIXER_STATUS Enum(IN PVOID EnumContext, IN ULONG DeviceIndex, OUT LPWSTR * DeviceName, OUT PHANDLE OutHandle);
MIXER_STATUS Enum(IN PVOID EnumContext, IN ULONG DeviceIndex, OUT LPWSTR * DeviceName, OUT PHANDLE OutHandle, OUT PHANDLE OutKey);
MIXER_STATUS OpenKey(IN HANDLE hKey, IN LPWSTR SubKey, IN ULONG DesiredAccess, OUT PHANDLE OutKey);
MIXER_STATUS CloseKey(IN HANDLE hKey);
MIXER_STATUS QueryKeyValue(IN HANDLE hKey, IN LPWSTR KeyName, OUT PVOID * ResultBuffer, OUT PULONG ResultLength, OUT PULONG KeyType);
MIXER_CONTEXT MixerContext =
{
@@ -27,11 +30,59 @@ MIXER_CONTEXT MixerContext =
Free,
Open,
Close,
Copy
Copy,
OpenKey,
QueryKeyValue,
CloseKey
};
GUID CategoryGuid = {STATIC_KSCATEGORY_AUDIO};
MIXER_STATUS
QueryKeyValue(
IN HANDLE hKey,
IN LPWSTR KeyName,
OUT PVOID * ResultBuffer,
OUT PULONG ResultLength,
OUT PULONG KeyType)
{
if (RegQueryValueExW((HKEY)hKey, KeyName, NULL, KeyType, NULL, ResultLength) == ERROR_FILE_NOT_FOUND)
return MM_STATUS_UNSUCCESSFUL;
*ResultBuffer = HeapAlloc(GetProcessHeap(), 0, *ResultLength);
if (*ResultBuffer == NULL)
return MM_STATUS_NO_MEMORY;
if (RegQueryValueExW((HKEY)hKey, KeyName, NULL, KeyType, *ResultBuffer, ResultLength) != ERROR_SUCCESS)
{
HeapFree(GetProcessHeap(), 0, *ResultBuffer);
return MM_STATUS_UNSUCCESSFUL;
}
return MM_STATUS_SUCCESS;
}
MIXER_STATUS
OpenKey(
IN HANDLE hKey,
IN LPWSTR SubKey,
IN ULONG DesiredAccess,
OUT PHANDLE OutKey)
{
if (RegOpenKeyExW((HKEY)hKey, SubKey, 0, DesiredAccess, (PHKEY)OutKey) == ERROR_SUCCESS)
return MM_STATUS_SUCCESS;
return MM_STATUS_UNSUCCESSFUL;
}
MIXER_STATUS
CloseKey(
IN HANDLE hKey)
{
RegCloseKey((HKEY)hKey);
return MM_STATUS_SUCCESS;
}
PVOID Alloc(ULONG NumBytes)
{
return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, NumBytes);
@@ -151,13 +202,15 @@ Enum(
IN PVOID EnumContext,
IN ULONG DeviceIndex,
OUT LPWSTR * DeviceName,
OUT PHANDLE OutHandle)
OUT PHANDLE OutHandle,
OUT PHANDLE OutKey)
{
SP_DEVICE_INTERFACE_DATA InterfaceData;
SP_DEVINFO_DATA DeviceData;
PSP_DEVICE_INTERFACE_DETAIL_DATA_W DetailData;
BOOL Result;
DWORD Length;
MIXER_STATUS Status;
//printf("Enum EnumContext %p DeviceIndex %lu OutHandle %p\n", EnumContext, DeviceIndex, OutHandle);
@@ -196,12 +249,40 @@ Enum(
if (!Result)
{
DPRINT("SetupDiGetDeviceInterfaceDetailW failed with %lu\n", GetLastError());
return MM_STATUS_UNSUCCESSFUL;
}
// copy path
*DeviceName = (LPWSTR)&DetailData->DevicePath[0];
return Open(DetailData->DevicePath, OutHandle);
*OutKey = SetupDiOpenDeviceInterfaceRegKey(EnumContext, &InterfaceData, 0, KEY_READ);
if ((HKEY)*OutKey == INVALID_HANDLE_VALUE)
{
HeapFree(GetProcessHeap(), 0, DetailData);
return MM_STATUS_UNSUCCESSFUL;
}
Status = Open(DetailData->DevicePath, OutHandle);
if (Status != MM_STATUS_SUCCESS)
{
RegCloseKey((HKEY)*OutKey);
HeapFree(GetProcessHeap(), 0, DetailData);
return Status;
}
*DeviceName = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, (wcslen(DetailData->DevicePath)+1) * sizeof(WCHAR));
if (*DeviceName == NULL)
{
CloseHandle(*OutHandle);
RegCloseKey((HKEY)*OutKey);
HeapFree(GetProcessHeap(), 0, DetailData);
return MM_STATUS_NO_MEMORY;
}
wcscpy(*DeviceName, DetailData->DevicePath);
HeapFree(GetProcessHeap(), 0, DetailData);
return Status;
}
BOOL