在国内的网址上找不到类似的文章，于是从其他方面着手，找到了如下的代码。
并使用VS2010编译通过，代码公布，遵循GPL规定。
具体代码从GITHUB中的QT代码移植到VS2010
// wAudio.cpp : Defines the entry point for the console application.
//
#include \"stdafx.h\"
#include <Windows.h>
#include <Endpointvolume.h>
#include <Mmdeviceapi.h>
#include <conio.h>
#include <mmdeviceapi.h>
#include <devicetopology.h>
#include <Ksmedia.h>
#include <math.h>
#pragma comment(lib, \"Winmm.lib\")
HRESULT _hr;
IMMDeviceEnumerator *_pDeviceEnumerator;
IMMDevice *_pDefaultDevice;
IDeviceTopology *_pDeviceTopology;
IConnector *_pConnectorFrom;
IConnector *_pConnectorTo;
IPart *_pPart;
IAudioVolumeLevel *_pAudioVolumeLevelFront;
IAudioVolumeLevel *_pAudioVolumeLevelRear;
IAudioVolumeLevel *_pAudioVolumeLevelSubwoofer;
IAudioVolumeLevel *_pAudioVolumeLevelCenter;
IAudioVolumeLevel *_pAudioVolumeLevelSide;
#define version \"1.0.0\"
#define progname \"wAudio.exe\"
int dID = 1;
void usage(void)
{
fprintf(stderr, \"Audio volume control for gaming Version: %s\n\"
\"\n(c) Tody 2018, T-ware Inc.\n\"
\"\nUsage:\n\t%s <ID volume>\"
\"\nID Options:\n\"
\" 1 front volume\n\"
\" 2 Rear volume\n\"
\" 3 Subwoofer volume\n\"
\" 4 Center volume\n\"
\" 5 Side volume\n\", version, progname );
exit(1);
}
float dbToPercent(float value)
{
return powf(10.0f, (value/20.0f)) * 100.0f;
}
float percentToDb(float value)
{
return 20 * log10(value/100);
}
void on_hSlider_Front_valueChanged(int value)
{
if(_pAudioVolumeLevelFront)
{
float valueDB =percentToDb(value);
float valDBs[2] = { valueDB, valueDB };
_pAudioVolumeLevelFront->SetLevelAllChannels(valDBs, 2, NULL);
}
}
void on_hSlider_Rear_valueChanged(int value)
{
if(_pAudioVolumeLevelRear)
{
float valueDB = percentToDb(value);
float valDBs[2] = { valueDB, valueDB };
_pAudioVolumeLevelRear->SetLevelAllChannels(valDBs, 2, NULL);
}
}
void on_hSlider_Sub_valueChanged(int value)
{
if(_pAudioVolumeLevelSubwoofer)
{
float valueDB = percentToDb(value);
_pAudioVolumeLevelSubwoofer->SetLevel(0, valueDB, NULL);
}
}
void on_hSlider_Center_valueChanged(int value)
{
if(_pAudioVolumeLevelCenter)
{
float valueDB = percentToDb(value);
_pAudioVolumeLevelCenter->SetLevel(0, valueDB, NULL);
}
}
void on_hSlider_Side_valueChanged(int value)
{
if(_pAudioVolumeLevelSide)
{
float valueDB = percentToDb(value);
float valDBs[2] = { valueDB, valueDB };
_pAudioVolumeLevelSide->SetLevelAllChannels(valDBs, 2, NULL);
}
}
int main(int argc, char* argv[])
{
float ch0, ch1;
int volume=100;
if (argc!=3)
usage();
if (atoi(argv[1])<1 || atoi(argv[1])>5)
usage();
if (atoi(argv[2])>100 || atoi(argv[2])<0)
usage();
dID = atoi(argv[1]);
volume=atoi(argv[2]);
// Initialize COM component
_hr = CoInitialize(NULL);
if(FAILED(_hr)){
printf(\"CoInitialize failed\");
return 1;
}
_hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_INPROC_SERVER, __uuidof(IMMDeviceEnumerator), (LPVOID *)&_pDeviceEnumerator);
if (_hr != S_OK){
fprintf(stderr,\"MMDeviceEnumerator failed\n\");
return 1;
}
_hr = _pDeviceEnumerator->GetDefaultAudioEndpoint(eRender, eConsole, &_pDefaultDevice); // need default device in mmsys.cpl Speakers
if (_hr != S_OK){
fprintf(stderr,\"GetDefaultAudioEndpoint failed\n\");
return 1;
}
_hr = _pDefaultDevice->Activate(__uuidof(IDeviceTopology), CLSCTX_INPROC_SERVER, NULL, (PVOID *)&_pDeviceTopology);
if (_hr != S_OK){
fprintf(stderr,\"IDeviceTopology failed\n\");
return 1;
}
_hr = _pDeviceTopology->GetConnector(0, &_pConnectorFrom);
if (_hr != S_OK){
fprintf(stderr,\"GetConnector failed\n\");
return 1;
}
_hr = _pConnectorFrom->GetConnectedTo(&_pConnectorTo);
if (_hr != S_OK){
fprintf(stderr,\"GetConnectedTo failed\n\");
return 1;
}
_hr = _pConnectorTo->QueryInterface(__uuidof(IPart), (PVOID *)&_pPart);
if (_hr != S_OK){
fprintf(stderr,\"QueryInterface failed\n\");
return 1;
}
LPWSTR PartName = nullptr;
_pPart->GetName(&PartName);
wprintf(L\"> %s\n\", PartName); // Realtek High Definition Audio
CoTaskMemFree(PartName);
PartName = nullptr;
IPartsList *pPartList = nullptr;
_hr = _pPart->EnumPartsIncoming(&pPartList);
if(_hr != S_OK){
fprintf(stderr,\"EnumPartsIncoming failed\n\");
return 1;
}
IPart *pPartItem1 = nullptr;
_hr = pPartList->GetPart(0, &pPartItem1);
if(_hr != S_OK){
fprintf(stderr,\"GetPart failed\n\");
return 1;
}
LPWSTR PartNameItem1 = nullptr;
pPartItem1->GetName(&PartNameItem1);
wprintf(L\"> %s\n\", PartNameItem1);
CoTaskMemFree(PartNameItem1);
PartNameItem1 = nullptr;
// Find GUID/KSNODE in Ksmedia.h and see what interface you can init
///// https://msdn.microsoft.com/en-us/library/windows/desktop/dd371442(v=vs.85).aspx
GUID guidPartItem1;
_hr = pPartItem1->GetSubType(&guidPartItem1); // KSNODETYPE_MUTE pPartItem1->Activate(IAudioMute) (can control Master Mute of Realtek HD Audio output)
if(_hr != S_OK){
fprintf(stderr,\"GetSubType PartItem1 failed\n\");
return 1;
}
IPartsList *pPartList2 = nullptr;
IPart *pPartItem2 = nullptr;
_hr = pPartItem1->EnumPartsIncoming(&pPartList2);
if(_hr != S_OK){
fprintf(stderr,\"EnumPartsIncoming from PartItem1 failed\n\");
return 1;
}
_hr = pPartList2->GetPart(0, &pPartItem2);
if(_hr != S_OK){
fprintf(stderr,\"GetPart PartList2 failed\n\");
return 1;
}
LPWSTR PartNameItem2 = nullptr;
pPartItem2->GetName(&PartNameItem2);
wprintf(L\"> %s\n\", PartNameItem2);
CoTaskMemFree(PartNameItem2);
PartNameItem2 = nullptr;
GUID guidPartItem2;
_hr = pPartItem2->GetSubType(&guidPartItem2); // KSNODETYPE_VOLUME pPartItem2->Activate(IAudioVolumeLevel) (can control Master Volume of Realtek HD Audio output)
if(_hr != S_OK){
fprintf(stderr,\"GetSubType PartItem2 failed\n\");
return 1;
}
IPartsList *pPartList3 = nullptr;
_hr = pPartItem2->EnumPartsIncoming(&pPartList3);
if(_hr != S_OK){
fprintf(stderr,\"EnumPartsIncoming PartItem2 failed\n\");
return 1;
}
IPart *pPartItem3 = nullptr;
pPartList3->GetPart(0, &pPartItem3);
if(_hr != S_OK){
fprintf(stderr,\"GetPart PartItem3 failed\n\");
return 1;
}
LPWSTR PartNameItem3;
pPartItem3->GetName(&PartNameItem3);
wprintf(L\"> %s\n\", PartNameItem3);
CoTaskMemFree(PartNameItem3);
PartNameItem3 = nullptr;
GUID guidPartItem3;
_hr = pPartItem3->GetSubType(&guidPartItem3); // KSNODETYPE_SUM (Front, Rear, Subwoofer, Center, Side, ...)
if(_hr != S_OK){
fprintf(stderr,\"GetSubType PartItem3 failed\n\");
return 1;
}
IPartsList *pPartList4 = nullptr;
_hr = pPartItem3->EnumPartsIncoming(&pPartList4);
if(_hr != S_OK){
fprintf(stderr,\"EnumPartsIncoming PartItem3 failed\n\");
return 1;
}
UINT CountLevels;
pPartList4->GetCount(&CountLevels); // PartList4Count
printf(\"> Count Levels: %d\n\", CountLevels);
// (Front, Rear, Subwoofer, Center, Side, ...)
// -------
// Front
IPart *pPartItemFront = nullptr;
pPartList4->GetPart(CountLevels-1, &pPartItemFront);
LPWSTR PartItem4Name;
pPartItemFront->GetName(&PartItem4Name);
wprintf(L\"> %s\n\", PartItem4Name);
CoTaskMemFree(PartItem4Name);
PartItem4Name = nullptr;
GUID guidPartItem4;
_hr = pPartItemFront->GetSubType(&guidPartItem4); // KSNODETYPE_VOLUME pPartItemLast->Activate(IAudioVolumeLevel)
if(_hr != S_OK){
fprintf(stderr,\"GetSubType Front failed\n\");
return 1;
}
_hr = pPartItemFront->Activate(CLSCTX_INPROC, __uuidof(IAudioVolumeLevel), (PVOID *)&_pAudioVolumeLevelFront);
if(_hr != S_OK){
fprintf(stderr,\"Activate Front 电脑 failed\n\");
return 1;
}
if(pPartItemFront)
{
pPartItemFront->Release();
pPartItemFront = nullptr;
}
// -------
// Side
IPart *pPartItemRear = nullptr;
pPartList4->GetPart(CountLevels-2, &pPartItemRear);
LPWSTR PartItem5Name;
pPartItemRear->GetName(&PartItem5Name);
wprintf(L\"> %s\n\", PartItem5Name);
CoTaskMemFree(PartItem5Name);
PartItem5Name = nullptr;
_hr = pPartItemRear->Activate(CLSCTX_INPROC, __uuidof(IAudioVolumeLevel), (PVOID *)&_pAudioVolumeLevelRear);
if(_hr != S_OK){
fprintf(stderr,\"Activate Side failed\n\");
return 1;
}
if(pPartItemRear)
{
pPartItemRear->Release();
pPartItemRear = nullptr;
}
// -------
// Subwoofer 电脑
IPart *pPartItemSubwoofer = nullptr;
pPartList4->GetPart(CountLevels-3, &pPartItemSubwoofer);
LPWSTR PartItem6Name;
pPartItemSubwoofer->GetName(&PartItem6Name);
wprintf(L\"> %s\n\", PartItem6Name);
CoTaskMemFree(PartItem6Name);
PartItem6Name = nullptr;
_hr = pPartItemSubwoofer->Activate(CLSCTX_INPROC, __uuidof(IAudioVolumeLevel), (PVOID *)&_pAudioVolumeLevelSubwoofer);
if(_hr != S_OK){
fprintf(stderr,\"Activate Subwoofer failed\n\");
return 1;
}
if(pPartItemSubwoofer)
{
pPartItemSubwoofer->Release();
pPartItemSubwoofer = nullptr;
}
// -------
// Center
IPart *pPartItemCenter = nullptr;
pPartList4->GetPart(CountLevels-4, &pPartItemCenter);
LPWSTR PartItem7Name;
电脑 pPartItemCenter->GetName(&PartItem7Name);
wprintf(L\"> %s\n\", PartItem7Name);
CoTaskMemFree(PartItem7Name);
PartItem7Name = nullptr;
_hr = pPartItemCenter->Activate(CLSCTX_INPROC, __uuidof(IAudioVolumeLevel), (PVOID *)&_pAudioVolumeLevelCenter);
if(_hr != S_OK){
fprintf(stderr,\"Activate Center failed\n\");
return 1;
}
if(pPartItemCenter)
{
pPartItemCenter->Release();
pPartItemCenter = nullptr;
}
/*
// -------
// Mute
IPart *pPartItemSide = nullptr;
pPartList4->GetPart(CountLevels-5, &pPartItemSide);
LPWSTR PartItem8Name;
pPartItemSide->GetName(&PartItem8Name);
wprintf(L\"8: %s\n\", PartItem8Name);
CoTaskMemFree(PartItem8Name);
PartItem8Name = nullptr;
_hr = pPartItemSide->Activate(CLSCTX_INPROC, 电脑 __uuidof(IAudioVolumeLevel), (PVOID *)&_pAudioVolumeLevelSide);
if(_hr != S_OK){
fprintf(stderr,\"Activate failed\n\");
return 1;
}
if(pPartItemSide)
{
pPartItemSide->Release();
pPartItemSide = nullptr;
}
*/
printf(\"> Control code: <%d %d>\n\n\tSetting volume....\n\", dID, volume);
/// control code
switch(dID){
case 1: // Front
on_hSlider_Front_valueChanged(volume);
_pAudioVolumeLevelFront->GetLevel(0, &ch0);
_pAudioVolumeLevelFront->GetLevel(1, &ch1);
printf(\"\n\t[Front]# Left: %3.0f, Right: %3.0f\", dbToPercent(ch0), dbToPercent(ch1));
break;
case 2: // Rear
on_hSlider_Rear_valueChanged(volume);
_pAudioVolumeLevelRear->GetLevel(0, &ch0);
_pAudioVolumeLevelRear->GetLevel(1, &ch1);
printf(\"\n\t[Rear]# Left: %3.0f, Right: %3.0f\", dbToPercent(ch0), dbToPercent(ch1));
break;
case 3: // Subwoofer
on_hSlider_Sub_valueChanged(volume);
_pAudioVolumeLevelSubwoofer->GetLevel(0, &ch0);
printf(\"\n\t[Subwoofer]# %3.0f\", dbToPercent(ch0));
break;
case 4: // Center
on_hSlider_Center_valueChanged(volume);
_pAudioVolumeLevelCenter->GetLevel(0, &ch0);
printf(\"\n\t[Center]# %3.0f\", dbToPercent(ch0));
break;
case 5: // Side
on_hSlider_Side_valueChanged(volume);
_pAudioVolumeLevelSide->GetLevel(0, &ch0);
_pAudioVolumeLevelSide->GetLevel(1, &ch1);
printf(\"\n\t[Side]# Left: %3.0f, Right: %3.0f\", dbToPercent(ch0), dbToPercent(ch1));
break;
}
if(_pAudioVolumeLevelFront)
{
_pAudioVolumeLevelFront->Release();
_pAudioVolumeLevelFront = nullptr;
}
if(_pAudioVolumeLevelRear)
{
_pAudioVolumeLevelRear->Release();
_pAudioVolumeLevelRear = nullptr;
}
if(_pAudioVolumeLevelSubwoofer)
{
_pAudioVolumeLevelSubwoofer->Release();
_pAudioVolumeLevelSubwoofer = nullptr;
}
if(_pAudioVolumeLevelCenter)
{
_pAudioVolumeLevelCenter->Release();
_pAudioVolumeLevelCenter = nullptr;
}
if(_pAudioVolumeLevelSide)
{
_pAudioVolumeLevelSide->Release();
_pAudioVolumeLevelSide = nullptr;
}
if(_pPart)
{
_pPart->Release();
_pPart = nullptr;
}
if(_pConnectorTo)
{
_pConnectorTo->Release();
_pConnectorTo = nullptr;
}
if(_pConnectorFrom)
{
_pConnectorFrom->Release();
_pConnectorFrom = nullptr;
}
if(_pDeviceTopology)
{
_pDeviceTopology->Release();
_pDeviceTopology = nullptr;
}
if(_pDefaultDevice)
{
_pDefaultDevice->Release();
_pDefaultDevice = nullptr;
}
if(_pDeviceEnumerator)
{
_pDeviceEnumerator->Release();
_pDeviceEnumerator = nullptr;
}
CoUninitialize();
return 0;
}
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