/
swapaposfx.cpp
823 lines (706 loc) · 29 KB
/
swapaposfx.cpp
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//
// SwapAPOSFX.cpp -- Copyright (c) Microsoft Corporation. All rights reserved.
//
// Description:
//
// Implementation of CSwapAPOSFX
//
#include <atlbase.h>
#include <atlcom.h>
#include <atlcoll.h>
#include <atlsync.h>
#include <mmreg.h>
#include <audioenginebaseapo.h>
#include <baseaudioprocessingobject.h>
#include <resource.h>
#include <float.h>
#include "SwapAPO.h"
#include <devicetopology.h>
#include <CustomPropKeys.h>
#include <propvarutil.h>
// Static declaration of the APO_REG_PROPERTIES structure
// associated with this APO. The number in <> brackets is the
// number of IIDs supported by this APO. If more than one, then additional
// IIDs are added at the end
#pragma warning (disable : 4815)
const AVRT_DATA CRegAPOProperties<1> CSwapAPOSFX::sm_RegProperties(
__uuidof(SwapAPOSFX), // clsid of this APO
L"CSwapAPOSFX", // friendly name of this APO
L"Copyright (c) Microsoft Corporation", // copyright info
1, // major version #
0, // minor version #
__uuidof(ISwapAPOSFX) // iid of primary interface
//
// If you need to change any of these attributes, uncomment everything up to
// the point that you need to change something. If you need to add IIDs, uncomment
// everything and add additional IIDs at the end.
//
// , DEFAULT_APOREG_FLAGS
// , DEFAULT_APOREG_MININPUTCONNECTIONS
// , DEFAULT_APOREG_MAXINPUTCONNECTIONS
// , DEFAULT_APOREG_MINOUTPUTCONNECTIONS
// , DEFAULT_APOREG_MAXOUTPUTCONNECTIONS
// , DEFAULT_APOREG_MAXINSTANCES
//
);
#pragma AVRT_CODE_BEGIN
//-------------------------------------------------------------------------
// Description:
//
// Do the actual processing of data.
//
// Parameters:
//
// u32NumInputConnections - [in] number of input connections
// ppInputConnections - [in] pointer to list of input APO_CONNECTION_PROPERTY pointers
// u32NumOutputConnections - [in] number of output connections
// ppOutputConnections - [in] pointer to list of output APO_CONNECTION_PROPERTY pointers
//
// Return values:
//
// void
//
// Remarks:
//
// This function processes data in a manner dependent on the implementing
// object. This routine can not fail and can not block, or call any other
// routine that blocks, or touch pagable memory.
//
STDMETHODIMP_(void) CSwapAPOSFX::APOProcess(
UINT32 u32NumInputConnections,
APO_CONNECTION_PROPERTY** ppInputConnections,
UINT32 u32NumOutputConnections,
APO_CONNECTION_PROPERTY** ppOutputConnections)
{
UNREFERENCED_PARAMETER(u32NumInputConnections);
UNREFERENCED_PARAMETER(u32NumOutputConnections);
FLOAT32 *pf32InputFrames, *pf32OutputFrames;
ATLASSERT(m_bIsLocked);
// assert that the number of input and output connectins fits our registration properties
ATLASSERT(m_pRegProperties->u32MinInputConnections <= u32NumInputConnections);
ATLASSERT(m_pRegProperties->u32MaxInputConnections >= u32NumInputConnections);
ATLASSERT(m_pRegProperties->u32MinOutputConnections <= u32NumOutputConnections);
ATLASSERT(m_pRegProperties->u32MaxOutputConnections >= u32NumOutputConnections);
// check APO_BUFFER_FLAGS.
switch( ppInputConnections[0]->u32BufferFlags )
{
case BUFFER_INVALID:
{
ATLASSERT(false); // invalid flag - should never occur. don't do anything.
break;
}
case BUFFER_VALID:
case BUFFER_SILENT:
{
// get input pointer to connection buffer
pf32InputFrames = reinterpret_cast<FLOAT32*>(ppInputConnections[0]->pBuffer);
ATLASSERT( IS_VALID_TYPED_READ_POINTER(pf32InputFrames) );
// get output pointer to connection buffer
pf32OutputFrames = reinterpret_cast<FLOAT32*>(ppOutputConnections[0]->pBuffer);
ATLASSERT( IS_VALID_TYPED_WRITE_POINTER(pf32OutputFrames) );
if (BUFFER_SILENT == ppInputConnections[0]->u32BufferFlags)
{
WriteSilence( pf32InputFrames,
ppInputConnections[0]->u32ValidFrameCount,
GetSamplesPerFrame() );
}
// swap the input buffer in-place
if (
!IsEqualGUID(m_AudioProcessingMode, AUDIO_SIGNALPROCESSINGMODE_RAW) &&
m_fEnableSwapSFX
)
{
ProcessSwap(pf32InputFrames, pf32InputFrames,
ppInputConnections[0]->u32ValidFrameCount,
m_u32SamplesPerFrame);
}
// copy the memory only if there is an output connection, and input/output pointers are unequal
if ( (0 != u32NumOutputConnections) &&
(ppOutputConnections[0]->pBuffer != ppInputConnections[0]->pBuffer) )
{
CopyFrames( pf32OutputFrames, pf32InputFrames,
ppInputConnections[0]->u32ValidFrameCount,
GetSamplesPerFrame() );
}
// pass along buffer flags
ppOutputConnections[0]->u32BufferFlags = ppInputConnections[0]->u32BufferFlags;
// Set the valid frame count.
ppOutputConnections[0]->u32ValidFrameCount = ppInputConnections[0]->u32ValidFrameCount;
break;
}
default:
{
ATLASSERT(false); // invalid flag - should never occur
break;
}
} // switch
} // APOProcess
#pragma AVRT_CODE_END
//-------------------------------------------------------------------------
// Description:
//
// Report delay added by the APO between samples given on input
// and samples given on output.
//
// Parameters:
//
// pTime - [out] hundreds-of-nanoseconds of delay added
//
// Return values:
//
// S_OK on success, a failure code on failure
STDMETHODIMP CSwapAPOSFX::GetLatency(HNSTIME* pTime)
{
ASSERT_NONREALTIME();
HRESULT hr = S_OK;
IF_TRUE_ACTION_JUMP(NULL == pTime, hr = E_POINTER, Exit);
*pTime = 0;
Exit:
return hr;
}
//-------------------------------------------------------------------------
// Description:
//
// Verifies that the APO is ready to process and locks its state if so.
//
// Parameters:
//
// u32NumInputConnections - [in] number of input connections attached to this APO
// ppInputConnections - [in] connection descriptor of each input connection attached to this APO
// u32NumOutputConnections - [in] number of output connections attached to this APO
// ppOutputConnections - [in] connection descriptor of each output connection attached to this APO
//
// Return values:
//
// S_OK Object is locked and ready to process.
// E_POINTER Invalid pointer passed to function.
// APOERR_INVALID_CONNECTION_FORMAT Invalid connection format.
// APOERR_NUM_CONNECTIONS_INVALID Number of input or output connections is not valid on
// this APO.
STDMETHODIMP CSwapAPOSFX::LockForProcess(UINT32 u32NumInputConnections,
APO_CONNECTION_DESCRIPTOR** ppInputConnections,
UINT32 u32NumOutputConnections, APO_CONNECTION_DESCRIPTOR** ppOutputConnections)
{
ASSERT_NONREALTIME();
HRESULT hr = S_OK;
hr = CBaseAudioProcessingObject::LockForProcess(u32NumInputConnections,
ppInputConnections, u32NumOutputConnections, ppOutputConnections);
IF_FAILED_JUMP(hr, Exit);
Exit:
return hr;
}
// The method that this long comment refers to is "Initialize()"
//-------------------------------------------------------------------------
// Description:
//
// Generic initialization routine for APOs.
//
// Parameters:
//
// cbDataSize - [in] the size in bytes of the initialization data.
// pbyData - [in] initialization data specific to this APO
//
// Return values:
//
// S_OK Successful completion.
// E_POINTER Invalid pointer passed to this function.
// E_INVALIDARG Invalid argument
// AEERR_ALREADY_INITIALIZED APO is already initialized
//
// Remarks:
//
// This method initializes the APO. The data is variable length and
// should have the form of:
//
// struct MyAPOInitializationData
// {
// APOInitBaseStruct APOInit;
// ... // add additional fields here
// };
//
// If the APO needs no initialization or needs no data to initialize
// itself, it is valid to pass NULL as the pbyData parameter and 0 as
// the cbDataSize parameter.
//
// As part of designing an APO, decide which parameters should be
// immutable (set once during initialization) and which mutable (changeable
// during the lifetime of the APO instance). Immutable parameters must
// only be specifiable in the Initialize call; mutable parameters must be
// settable via methods on whichever parameter control interface(s) your
// APO provides. Mutable values should either be set in the initialize
// method (if they are required for proper operation of the APO prior to
// LockForProcess) or default to reasonable values upon initialize and not
// be required to be set before LockForProcess.
//
// Within the mutable parameters, you must also decide which can be changed
// while the APO is locked for processing and which cannot.
//
// All parameters should be considered immutable as a first choice, unless
// there is a specific scenario which requires them to be mutable; similarly,
// no mutable parameters should be changeable while the APO is locked, unless
// a specific scenario requires them to be. Following this guideline will
// simplify the APO's state diagram and implementation and prevent certain
// types of bug.
//
// If a parameter changes the APOs latency or MaxXXXFrames values, it must be
// immutable.
//
// The default version of this function uses no initialization data, but does verify
// the passed parameters and set the m_bIsInitialized member to true.
//
// Note: This method may not be called from a real-time processing thread.
//
HRESULT CSwapAPOSFX::Initialize(UINT32 cbDataSize, BYTE* pbyData)
{
HRESULT hr = S_OK;
CComPtr<IDeviceTopology> spMyDeviceTopology;
CComPtr<IConnector> spMyConnector;
GUID processingMode;
IF_TRUE_ACTION_JUMP( ((NULL == pbyData) && (0 != cbDataSize)), hr = E_INVALIDARG, Exit);
IF_TRUE_ACTION_JUMP( ((NULL != pbyData) && (0 == cbDataSize)), hr = E_INVALIDARG, Exit);
if (cbDataSize == sizeof(APOInitSystemEffects3))
{
APOInitSystemEffects3* papoSysFxInit3 = (APOInitSystemEffects3*)pbyData;
// Try to get the logging service, but ignore errors as failure to do logging it is not fatal.
hr = papoSysFxInit3->pServiceProvider->QueryService(SID_AudioProcessingObjectLoggingService, IID_PPV_ARGS(&m_apoLoggingService));
IF_FAILED_JUMP(hr, Exit);
// SampleApo supports the new IAudioSystemEffects3 interface so it will receive APOInitSystemEffects3
// in pbyData if the audio driver has declared support for this.
// Use IMMDevice to activate IAudioSystemEffectsPropertyStore that contains the default, user and
// volatile settings.
IMMDeviceCollection* deviceCollection = reinterpret_cast<APOInitSystemEffects3*>(pbyData)->pDeviceCollection;
if (deviceCollection != nullptr)
{
UINT32 numDevices;
wil::com_ptr_nothrow<IMMDevice> endpoint;
// Get the endpoint on which this APO has been created
// (It is the last device in the device collection)
if (SUCCEEDED(deviceCollection->GetCount(&numDevices)) && numDevices > 0 &&
SUCCEEDED(deviceCollection->Item(numDevices - 1, &endpoint)))
{
wil::unique_prop_variant activationParam;
hr = InitPropVariantFromCLSID(SWAP_APO_SFX_CONTEXT, &activationParam);
IF_FAILED_JUMP(hr, Exit);
wil::com_ptr_nothrow<IAudioSystemEffectsPropertyStore> effectsPropertyStore;
hr = endpoint->Activate(__uuidof(effectsPropertyStore), CLSCTX_ALL, &activationParam, effectsPropertyStore.put_void());
IF_FAILED_JUMP(hr, Exit);
// This is where an APO might want to open the volatile or default property stores as well
// Use STGM_READWRITE if IPropertyStore::SetValue is needed.
hr = effectsPropertyStore->OpenUserPropertyStore(STGM_READ, m_userStore.put());
IF_FAILED_JUMP(hr, Exit);
}
}
// Windows should pass a valid collection.
ATLASSERT(papoSysFxInit2->pDeviceCollection != nullptr);
IF_TRUE_ACTION_JUMP(papoSysFxInit3->pDeviceCollection == nullptr, hr = E_INVALIDARG, Exit);
// Get the IDeviceTopology and IConnector interfaces to communicate with this
// APO's counterpart audio driver. This can be used for any proprietary
// communication.
hr = papoSysFxInit3->pDeviceCollection->Item(papoSysFxInit3->nSoftwareIoDeviceInCollection, &m_device);
IF_FAILED_JUMP(hr, Exit);
hr = m_device->Activate(__uuidof(IDeviceTopology), CLSCTX_ALL, NULL, (void**)&spMyDeviceTopology);
IF_FAILED_JUMP(hr, Exit);
hr = spMyDeviceTopology->GetConnector(papoSysFxInit3->nSoftwareIoConnectorIndex, &spMyConnector);
IF_FAILED_JUMP(hr, Exit);
// Save the processing mode being initialized.
processingMode = papoSysFxInit3->AudioProcessingMode;
}
else if (cbDataSize == sizeof(APOInitSystemEffects2))
{
//
// Initialize for mode-specific signal processing
//
APOInitSystemEffects2* papoSysFxInit2 = (APOInitSystemEffects2*)pbyData;
// Save reference to the effects property store. This saves effects settings
// and is the communication medium between this APO and any associated UI.
m_spAPOSystemEffectsProperties = papoSysFxInit2->pAPOSystemEffectsProperties;
// Windows should pass a valid collection.
ATLASSERT(papoSysFxInit2->pDeviceCollection != nullptr);
IF_TRUE_ACTION_JUMP(papoSysFxInit2->pDeviceCollection == nullptr, hr = E_INVALIDARG, Exit);
// Get the IDeviceTopology and IConnector interfaces to communicate with this
// APO's counterpart audio driver. This can be used for any proprietary
// communication.
hr = papoSysFxInit2->pDeviceCollection->Item(papoSysFxInit2->nSoftwareIoDeviceInCollection, &m_device);
IF_FAILED_JUMP(hr, Exit);
hr = m_device->Activate(__uuidof(IDeviceTopology), CLSCTX_ALL, NULL, (void**)&spMyDeviceTopology);
IF_FAILED_JUMP(hr, Exit);
hr = spMyDeviceTopology->GetConnector(papoSysFxInit2->nSoftwareIoConnectorIndex, &spMyConnector);
IF_FAILED_JUMP(hr, Exit);
// Save the processing mode being initialized.
processingMode = papoSysFxInit2->AudioProcessingMode;
}
else if (cbDataSize == sizeof(APOInitSystemEffects))
{
//
// Initialize for default signal processing
//
APOInitSystemEffects* papoSysFxInit = (APOInitSystemEffects*)pbyData;
// Save reference to the effects property store. This saves effects settings
// and is the communication medium between this APO and any associated UI.
m_spAPOSystemEffectsProperties = papoSysFxInit->pAPOSystemEffectsProperties;
// Assume default processing mode
processingMode = AUDIO_SIGNALPROCESSINGMODE_DEFAULT;
}
else
{
// Invalid initialization size
hr = E_INVALIDARG;
goto Exit;
}
// Validate then save the processing mode. Note an endpoint effects APO
// does not depend on the mode. Windows sets the APOInitSystemEffects2
// AudioProcessingMode member to GUID_NULL for an endpoint effects APO.
IF_TRUE_ACTION_JUMP((processingMode != AUDIO_SIGNALPROCESSINGMODE_DEFAULT &&
processingMode != AUDIO_SIGNALPROCESSINGMODE_RAW &&
processingMode != AUDIO_SIGNALPROCESSINGMODE_COMMUNICATIONS &&
processingMode != AUDIO_SIGNALPROCESSINGMODE_SPEECH &&
processingMode != AUDIO_SIGNALPROCESSINGMODE_MEDIA &&
processingMode != AUDIO_SIGNALPROCESSINGMODE_MOVIE), hr = E_INVALIDARG, Exit);
m_AudioProcessingMode = processingMode;
//
// An APO that implements signal processing more complex than this sample
// would configure its processing for the processingMode determined above.
// If necessary, the APO would also use the IDeviceTopology and IConnector
// interfaces retrieved above to communicate with its counterpart audio
// driver to configure any additional signal processing in the driver and
// associated hardware.
//
//
// Get the current values
//
if (m_userStore != nullptr)
{
m_fEnableSwapSFX = GetCurrentEffectsSetting(m_userStore.get(), PKEY_Endpoint_Enable_Channel_Swap_SFX, m_AudioProcessingMode);
}
if (m_spAPOSystemEffectsProperties != NULL)
{
m_fEnableSwapSFX = GetCurrentEffectsSetting(m_spAPOSystemEffectsProperties, PKEY_Endpoint_Enable_Channel_Swap_SFX, m_AudioProcessingMode);
}
RtlZeroMemory(m_effectInfos, sizeof(m_effectInfos));
m_effectInfos[0] = { SwapEffectId, TRUE, m_fEnableSwapSFX ? AUDIO_SYSTEMEFFECT_STATE_ON : AUDIO_SYSTEMEFFECT_STATE_OFF };
if (cbDataSize != sizeof(APOInitSystemEffects3))
{
//
// Register for notification of registry updates
//
hr = m_spEnumerator.CoCreateInstance(__uuidof(MMDeviceEnumerator));
IF_FAILED_JUMP(hr, Exit);
hr = m_spEnumerator->RegisterEndpointNotificationCallback(this);
IF_FAILED_JUMP(hr, Exit);
m_bRegisteredEndpointNotificationCallback = TRUE;
}
m_bIsInitialized = true;
Exit:
return hr;
}
//-------------------------------------------------------------------------
//
// GetEffectsList
//
// Retrieves the list of signal processing effects currently active and
// stores an event to be signaled if the list changes.
//
// Parameters
//
// ppEffectsIds - returns a pointer to a list of GUIDs each identifying a
// class of effect. The caller is responsible for freeing this memory by
// calling CoTaskMemFree.
//
// pcEffects - returns a count of GUIDs in the list.
//
// Event - passes an event handle. The APO signals this event when the list
// of effects changes from the list returned from this function. The APO
// uses this event until either this function is called again or the APO
// is destroyed. The passed handle may be NULL. In this case, the APO
// stops using any previous handle and does not signal an event.
//
// Remarks
//
// An APO imlements this method to allow Windows to discover the current
// effects applied by the APO. The list of effects may depend on what signal
// processing mode the APO initialized (see AudioProcessingMode in the
// APOInitSystemEffects2 structure) as well as any end user configuration.
//
// If there are no effects then the function still succeeds, ppEffectsIds
// returns a NULL pointer, and pcEffects returns a count of 0.
//
STDMETHODIMP CSwapAPOSFX::GetEffectsList(_Outptr_result_buffer_maybenull_(*pcEffects) LPGUID *ppEffectsIds, _Out_ UINT *pcEffects, _In_ HANDLE Event)
{
HRESULT hr;
BOOL effectsLocked = FALSE;
UINT cEffects = 0;
IF_TRUE_ACTION_JUMP(ppEffectsIds == NULL, hr = E_POINTER, Exit);
IF_TRUE_ACTION_JUMP(pcEffects == NULL, hr = E_POINTER, Exit);
// Synchronize access to the effects list and effects changed event
m_EffectsLock.Enter();
effectsLocked = TRUE;
// Always close existing effects change event handle
if (m_hEffectsChangedEvent != NULL)
{
CloseHandle(m_hEffectsChangedEvent);
m_hEffectsChangedEvent = NULL;
}
// If an event handle was specified, save it here (duplicated to control lifetime)
if (Event != NULL)
{
if (!DuplicateHandle(GetCurrentProcess(), Event, GetCurrentProcess(), &m_hEffectsChangedEvent, EVENT_MODIFY_STATE, FALSE, 0))
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto Exit;
}
}
// naked scope to force the initialization of list[] to be after we enter the critical section
{
struct EffectControl
{
GUID effect;
BOOL control;
};
EffectControl list[] =
{
{ SwapEffectId, m_fEnableSwapSFX },
};
if (!IsEqualGUID(m_AudioProcessingMode, AUDIO_SIGNALPROCESSINGMODE_RAW))
{
// count the active effects
for (UINT i = 0; i < ARRAYSIZE(list); i++)
{
if (list[i].control)
{
cEffects++;
}
}
}
if (0 == cEffects)
{
*ppEffectsIds = NULL;
*pcEffects = 0;
}
else
{
GUID *pEffectsIds = (LPGUID)CoTaskMemAlloc(sizeof(GUID) * cEffects);
if (pEffectsIds == nullptr)
{
hr = E_OUTOFMEMORY;
goto Exit;
}
// pick up the active effects
UINT j = 0;
for (UINT i = 0; i < ARRAYSIZE(list); i++)
{
if (list[i].control)
{
pEffectsIds[j++] = list[i].effect;
}
}
*ppEffectsIds = pEffectsIds;
*pcEffects = cEffects;
}
hr = S_OK;
}
Exit:
if (effectsLocked)
{
m_EffectsLock.Leave();
}
return hr;
}
HRESULT CSwapAPOSFX::GetControllableSystemEffectsList(_Outptr_result_buffer_maybenull_(*numEffects) AUDIO_SYSTEMEFFECT** effects, _Out_ UINT* numEffects, _In_opt_ HANDLE event)
{
RETURN_HR_IF_NULL(E_POINTER, effects);
RETURN_HR_IF_NULL(E_POINTER, numEffects);
*effects = nullptr;
*numEffects = 0;
// Always close existing effects change event handle
if (m_hEffectsChangedEvent != NULL)
{
CloseHandle(m_hEffectsChangedEvent);
m_hEffectsChangedEvent = NULL;
}
// If an event handle was specified, save it here (duplicated to control lifetime)
if (event != NULL)
{
if (!DuplicateHandle(GetCurrentProcess(), event, GetCurrentProcess(), &m_hEffectsChangedEvent, EVENT_MODIFY_STATE, FALSE, 0))
{
RETURN_IF_FAILED(HRESULT_FROM_WIN32(GetLastError()));
}
}
if (!IsEqualGUID(m_AudioProcessingMode, AUDIO_SIGNALPROCESSINGMODE_RAW))
{
wil::unique_cotaskmem_array_ptr<AUDIO_SYSTEMEFFECT> audioEffects(
static_cast<AUDIO_SYSTEMEFFECT*>(CoTaskMemAlloc(NUM_OF_EFFECTS * sizeof(AUDIO_SYSTEMEFFECT))), NUM_OF_EFFECTS);
RETURN_IF_NULL_ALLOC(audioEffects.get());
for (UINT i = 0; i < NUM_OF_EFFECTS; i++)
{
audioEffects[i].id = m_effectInfos[i].id;
audioEffects[i].state = m_effectInfos[i].state;
audioEffects[i].canSetState = m_effectInfos[i].canSetState;
}
*numEffects = (UINT)audioEffects.size();
*effects = audioEffects.release();
}
return S_OK;
}
HRESULT CSwapAPOSFX::SetAudioSystemEffectState(GUID effectId, AUDIO_SYSTEMEFFECT_STATE state)
{
for (auto effectInfo : m_effectInfos)
{
if (effectId == effectInfo.id)
{
AUDIO_SYSTEMEFFECT_STATE oldState = effectInfo.state;
effectInfo.state = state;
// Synchronize access to the effects list and effects changed event
m_EffectsLock.Enter();
// If anything changed and a change event handle exists
if (oldState != effectInfo.state)
{
SetEvent(m_hEffectsChangedEvent);
m_apoLoggingService->ApoLog(APO_LOG_LEVEL_INFO, L"SetAudioSystemEffectState - effect: " GUID_FORMAT_STRING L", state: %i", effectInfo.id, effectInfo.state);
}
m_EffectsLock.Leave();
return S_OK;
}
}
return E_NOTFOUND;
}
//-------------------------------------------------------------------------
// Description:
//
//
//
// Parameters:
//
//
//
// Return values:
//
//
//
// Remarks:
//
//
HRESULT CSwapAPOSFX::OnPropertyValueChanged(LPCWSTR pwstrDeviceId, const PROPERTYKEY key)
{
HRESULT hr = S_OK;
UNREFERENCED_PARAMETER(pwstrDeviceId);
if (!m_spAPOSystemEffectsProperties)
{
return hr;
}
// If either the master disable or our APO's enable properties changed...
if (PK_EQUAL(key, PKEY_Endpoint_Enable_Channel_Swap_SFX) ||
PK_EQUAL(key, PKEY_AudioEndpoint_Disable_SysFx))
{
LONG nChanges = 0;
// Synchronize access to the effects list and effects changed event
m_EffectsLock.Enter();
struct KeyControl
{
PROPERTYKEY key;
LONG *value;
};
KeyControl controls[] =
{
{ PKEY_Endpoint_Enable_Channel_Swap_SFX, &m_fEnableSwapSFX },
};
for (int i = 0; i < ARRAYSIZE(controls); i++)
{
LONG fOldValue;
LONG fNewValue = true;
// Get the state of whether channel swap MFX is enabled or not
fNewValue = GetCurrentEffectsSetting(m_spAPOSystemEffectsProperties, controls[i].key, m_AudioProcessingMode);
// Swap in the new setting
fOldValue = InterlockedExchange(controls[i].value, fNewValue);
if (fNewValue != fOldValue)
{
nChanges++;
}
}
// If anything changed and a change event handle exists
if ((nChanges > 0) && (m_hEffectsChangedEvent != NULL))
{
SetEvent(m_hEffectsChangedEvent);
}
m_EffectsLock.Leave();
}
return hr;
}
HRESULT CSwapAPOSFX::GetApoNotificationRegistrationInfo(_Out_writes_(*count) APO_NOTIFICATION_DESCRIPTOR **apoNotifications, _Out_ DWORD *count)
{
*apoNotifications = nullptr;
*count = 0;
RETURN_HR_IF_NULL(E_FAIL, m_device);
// Let the OS know what notifications we are interested in by returning an array of
// APO_NOTIFICATION_DESCRIPTORs.
constexpr DWORD numDescriptors = 1;
wil::unique_cotaskmem_ptr<APO_NOTIFICATION_DESCRIPTOR[]> apoNotificationDescriptors;
apoNotificationDescriptors.reset(static_cast<APO_NOTIFICATION_DESCRIPTOR*>(
CoTaskMemAlloc(sizeof(APO_NOTIFICATION_DESCRIPTOR) * numDescriptors)));
RETURN_IF_NULL_ALLOC(apoNotificationDescriptors);
// Our APO wants to get notified when a endpoint property changes on the audio endpoint.
apoNotificationDescriptors[0].type = APO_NOTIFICATION_TYPE_ENDPOINT_PROPERTY_CHANGE;
(void)m_device.query_to(&apoNotificationDescriptors[0].audioEndpointPropertyChange.device);
*apoNotifications = apoNotificationDescriptors.release();
*count = numDescriptors;
return S_OK;
}
void CSwapAPOSFX::HandleNotification(APO_NOTIFICATION *apoNotification)
{
if (apoNotification->type == APO_NOTIFICATION_TYPE_ENDPOINT_PROPERTY_CHANGE)
{
// If either the master disable or our APO's enable properties changed...
if (PK_EQUAL(apoNotification->audioEndpointPropertyChange.propertyKey, PKEY_Endpoint_Enable_Channel_Swap_SFX) ||
PK_EQUAL(apoNotification->audioEndpointPropertyChange.propertyKey, PKEY_AudioEndpoint_Disable_SysFx))
{
struct KeyControl
{
PROPERTYKEY key;
LONG* value;
};
KeyControl controls[] = {
{PKEY_Endpoint_Enable_Channel_Swap_SFX, &m_fEnableSwapSFX},
};
m_apoLoggingService->ApoLog(APO_LOG_LEVEL_INFO, L"HandleNotification - pkey: " GUID_FORMAT_STRING L" %d", GUID_FORMAT_ARGS(apoNotification->audioEndpointPropertyChange.propertyKey.fmtid), apoNotification->audioEndpointPropertyChange.propertyKey.pid);
for (int i = 0; i < ARRAYSIZE(controls); i++)
{
LONG fNewValue = true;
// Get the state of whether channel swap MFX is enabled or not
fNewValue = GetCurrentEffectsSetting(m_userStore.get(), controls[i].key, m_AudioProcessingMode);
SetAudioSystemEffectState(m_effectInfos[i].id, fNewValue ? AUDIO_SYSTEMEFFECT_STATE_ON : AUDIO_SYSTEMEFFECT_STATE_OFF);
}
}
}
}
//-------------------------------------------------------------------------
// Description:
//
// Destructor.
//
// Parameters:
//
// void
//
// Return values:
//
// void
//
// Remarks:
//
// This method deletes whatever was allocated.
//
// This method may not be called from a real-time processing thread.
//
CSwapAPOSFX::~CSwapAPOSFX(void)
{
//
// unregister for callbacks
//
if (m_bRegisteredEndpointNotificationCallback)
{
m_spEnumerator->UnregisterEndpointNotificationCallback(this);
}
if (m_hEffectsChangedEvent != NULL)
{
CloseHandle(m_hEffectsChangedEvent);
}
} // ~CSwapAPOSFX