Source code of Windows XP (NT5)
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254 lines
8.0 KiB

#include <windows.h>
#include <objbase.h>
#include <devioctl.h>
#include <ks.h>
#include <ksmedia.h>
#include "debug.h"
#include "reg.h"
#include "ksi.h"
extern "C" HANDLE hHeap;
const int StrLenGuid = 38; // "{01234567-0123-0123-0123-012345678901}"
__inline void MyStringFromGuid(PTSTR pstr, LPCGUID Guid)
{
wsprintf(pstr, TEXT("{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}"),
Guid->Data1,
Guid->Data2,
Guid->Data3,
Guid->Data4[0], Guid->Data4[1],
Guid->Data4[2], Guid->Data4[3], Guid->Data4[4], Guid->Data4[5], Guid->Data4[6], Guid->Data4[7]);
}
LONG KsGetFilterStatePropertySets(IN HANDLE hKsObject, OUT GUID *ppaPropertySets[], OUT int *pcPropertySets)
{
KSPROPERTY Property;
ULONG cbData;
LONG result;
Property.Set = KSPROPSETID_Audio;
Property.Id = KSPROPERTY_AUDIO_FILTER_STATE;
Property.Flags = KSPROPERTY_TYPE_GET;
if (DeviceIoControl(hKsObject, IOCTL_KS_PROPERTY,
&Property, sizeof(Property),
NULL, 0,
&cbData, NULL))
{
// dprintf(TEXT("KsGetFilterStatePropertySets: succeeded, cbData=%d\n"), cbData);
result = NO_ERROR;
} else {
result = GetLastError();
// dprintf(TEXT("KsGetFilterStatePropertySets: failed getting FilterState property size, LastError=%d\n"), result);
if (ERROR_MORE_DATA == result) {
// dprintf(TEXT("KsGetFilterStatePropertySets: note: %d bytes in FilterState\n"), cbData);
result = NO_ERROR;
}
}
if (NO_ERROR == result) {
if (cbData > 0) {
LPGUID paPropertySets;
paPropertySets = (LPGUID)HeapAlloc(hHeap, 0, cbData);
if (paPropertySets) {
Property.Set = KSPROPSETID_Audio;
Property.Id = KSPROPERTY_AUDIO_FILTER_STATE;
Property.Flags = KSPROPERTY_TYPE_GET;
if (DeviceIoControl(hKsObject, IOCTL_KS_PROPERTY,
&Property, sizeof(Property),
paPropertySets, cbData,
&cbData, NULL))
{
*ppaPropertySets = paPropertySets;
*pcPropertySets = cbData / sizeof(paPropertySets[0]);
} else {
result = GetLastError();
// dprintf(TEXT("KsGetFilterStatePropertySets: failed getting FilterState property, LastError=%d\n"), result);
}
if (NO_ERROR != result) {
HeapFree(hHeap, 0, paPropertySets);
}
} else {
result = ERROR_OUTOFMEMORY;
}
} else {
*ppaPropertySets = NULL;
*pcPropertySets = 0;
}
}
return result;
}
LONG KsSerializePropertySetToReg(IN HANDLE hKsObject, IN LPCGUID PropertySet, IN HKEY hKey)
{
TCHAR strGuid[StrLenGuid+1];
KSPROPERTY Property;
ULONG cbData;
LONG result;
MyStringFromGuid(strGuid, PropertySet);
// dprintf(TEXT("KsSerializePropertySetToReg: note: serializing set %s\n"), strGuid);
Property.Set = *PropertySet;
Property.Id = 0;
Property.Flags = KSPROPERTY_TYPE_SERIALIZESET;
if (DeviceIoControl(hKsObject, IOCTL_KS_PROPERTY,
&Property, sizeof(Property),
NULL, 0,
&cbData, NULL))
{
// dprintf(TEXT("KsSerializePropertySetToReg: succeeded, cbData=%d\n"), cbData);
result = NO_ERROR;
} else {
result = GetLastError();
// dprintf(TEXT("KsSerializePropertySetToReg: failed getting serialized size, LastError=%d\n"), result);
if (ERROR_MORE_DATA == result) {
// dprintf(TEXT("KsSerializePropertySetToReg: note: %d bytes to serialize\n"), cbData);
result = NO_ERROR;
}
}
if (NO_ERROR == result && cbData > 0) {
PVOID pvData = HeapAlloc(hHeap, 0, cbData);
if (pvData) {
Property.Set = *PropertySet;
Property.Id = 0;
Property.Flags = KSPROPERTY_TYPE_SERIALIZESET;
if (DeviceIoControl(hKsObject, IOCTL_KS_PROPERTY,
&Property, sizeof(Property),
pvData, cbData,
&cbData, NULL))
{
result = RegSetBinaryValue(hKey, strGuid, (PBYTE)pvData, cbData);
} else {
result = GetLastError();
// dprintf(TEXT("KsSerializePropertySetToReg: failed to serialize, LastError=%d\n"), result);
}
HeapFree(hHeap, 0, pvData);
} else {
result = ERROR_OUTOFMEMORY;
}
}
return result;
}
LONG KsSerializeFilterStateToReg(IN HANDLE hKsObject, IN HKEY hKey)
{
LPGUID paPropertySets;
int cPropertySets;
LONG result;
result = KsGetFilterStatePropertySets(hKsObject, &paPropertySets, &cPropertySets);
if (NO_ERROR == result && cPropertySets > 0) {
int i;
for (i = 0; i < cPropertySets; i++) {
KsSerializePropertySetToReg(hKsObject, &paPropertySets[i], hKey);
}
HeapFree(hHeap, 0, paPropertySets);
}
return result;
}
LONG KsUnserializePropertySetFromReg(IN HANDLE hKsObject, IN LPCGUID PropertySet, IN HKEY hKey)
{
TCHAR strGuid[StrLenGuid+1];
KSPROPERTY Property;
PBYTE pData;
ULONG cbData;
LONG result;
MyStringFromGuid(strGuid, PropertySet);
// dprintf(TEXT("KsUnserializePropertySetFromReg: note: serializing set %s\n"), strGuid);
result = RegQueryBinaryValue(hKey, strGuid, (PBYTE*)&pData, &cbData);
if (NO_ERROR == result) {
Property.Set = *PropertySet;
Property.Id = 0;
Property.Flags = KSPROPERTY_TYPE_UNSERIALIZESET;
if (DeviceIoControl(hKsObject, IOCTL_KS_PROPERTY,
&Property, sizeof(Property),
pData, cbData,
&cbData, NULL))
{
// dprintf(TEXT("KsUnserializePropertySetFromReg: succeeded\n"));
result = NO_ERROR;
} else {
result = GetLastError();
// dprintf(TEXT("KsUnserializePropertySetFromReg: failed to unserialize, LastError=%d\n"), result);
}
HeapFree(hHeap, 0, pData);
}
return result;
}
LONG KsUnserializeFilterStateFromReg(IN HANDLE hKsObject, IN HKEY hKey)
{
LPGUID paPropertySets;
int cPropertySets;
LONG result;
result = KsGetFilterStatePropertySets(hKsObject, &paPropertySets, &cPropertySets);
if (NO_ERROR == result && cPropertySets > 0) {
int i;
for (i = 0; i < cPropertySets; i++) {
KsUnserializePropertySetFromReg(hKsObject, &paPropertySets[i], hKey);
}
HeapFree(hHeap, 0, paPropertySets);
}
return result;
}
LONG KsSetAudioGfxXxxTargetDeviceId(IN HANDLE hGfx, IN ULONG PropertyId, IN PCTSTR DeviceId)
{
KSPROPERTY Property;
ULONG cbData;
LONG result;
ASSERT(hGfx);
ASSERT(!IsBadStringPtr(DeviceId, (UINT_PTR)(-1)));
ASSERT(lstrlen(DeviceId));
Property.Set = KSPROPSETID_AudioGfx;
Property.Id = PropertyId;
Property.Flags = KSPROPERTY_TYPE_SET;
cbData = (lstrlen(DeviceId) + 1) * sizeof(DeviceId[0]);
if (DeviceIoControl(hGfx, IOCTL_KS_PROPERTY,
&Property, sizeof(Property),
(LPVOID)DeviceId, cbData,
&cbData, NULL))
{
result = NO_ERROR;
} else {
result = GetLastError();
dprintf(TEXT("KsSetAudioGfxXxxTargetDeviceId: failed, LastError=%d\n"), result);
}
return result;
}
LONG KsSetAudioGfxRenderTargetDeviceId(IN HANDLE hGfx, IN PCTSTR DeviceId)
{
return KsSetAudioGfxXxxTargetDeviceId(hGfx, KSPROPERTY_AUDIOGFX_RENDERTARGETDEVICEID, DeviceId);
}
LONG KsSetAudioGfxCaptureTargetDeviceId(IN HANDLE hGfx, IN PCTSTR DeviceId)
{
return KsSetAudioGfxXxxTargetDeviceId(hGfx, KSPROPERTY_AUDIOGFX_CAPTURETARGETDEVICEID, DeviceId);
}