win7 xp下系统音量，麦克风音量，麦克风增强等级获取的调节

#include "StdAfx.h" #include "MixerWrap.h" #include <windows.h> #include <MMSystem.h> #include <stdlib.h> #include <string> #include <iostream> using namespace std; #include <mmdeviceapi.h> #include <endpointvolume.h> #include <Functiondiscoverykeys_devpkey.h> #include <comdef.h> #define SAFE_RELEASE(punk) \ if ((punk) != NULL) \ #define EXIT_ON_ERROR(hres) if (FAILED(hres)) { goto Exit; } #define SAFE_RELEASE(punk) if ((punk) != NULL) { (punk)->Release(); (punk) = NULL; } HRESULT getMicrophoneBoostVolumeLevel(IMMDevice *pEndptDev, IAudioVolumeLevel** ppVolumeLevel) { HRESULT hr = S_OK; DataFlow flow; IDeviceTopology *pDeviceTopology = NULL; IConnector *pConnFrom = NULL; IConnector *pConnTo = NULL; IPart *pPartPrev = NULL; IPart *pPartNext = NULL; *ppVolumeLevel = NULL; wchar_t microphoneBoostName[] = L"麦克风加强";//if your system language is English,the name is "microphone boost" if (pEndptDev == NULL) { EXIT_ON_ERROR(hr = E_POINTER) } // Get the endpoint device's IDeviceTopology interface. hr = pEndptDev->Activate( __uuidof(IDeviceTopology), CLSCTX_ALL, NULL, (void**)&pDeviceTopology); EXIT_ON_ERROR(hr) // The device topology for an endpoint device always // contains just one connector (connector number 0). hr = pDeviceTopology->GetConnector(0, &pConnFrom); SAFE_RELEASE(pDeviceTopology) EXIT_ON_ERROR(hr) // Make sure that this is a capture device. hr = pConnFrom->GetDataFlow(&flow); EXIT_ON_ERROR(hr) if (flow != Out) { // Error -- this is a rendering device. //EXIT_ON_ERROR(hr = AUDCLNT_E_WRONG_ENDPOINT_TYPE) } // Outer loop: Each iteration traverses the data path // through a device topology starting at the input // connector and ending at the output connector. while (TRUE) { BOOL bConnected; hr = pConnFrom->IsConnected(&bConnected); EXIT_ON_ERROR(hr) // Does this connector connect to another device? if (bConnected == FALSE) { // This is the end of the data path that // stretches from the endpoint device to the // system bus or external bus. Verify that // the connection type is Software_IO. ConnectorType connType; hr = pConnFrom->GetType(&connType); EXIT_ON_ERROR(hr) if (connType == Software_IO) { break; // finished } EXIT_ON_ERROR(hr = E_FAIL) } // Get the connector in the next device topology, // which lies on the other side of the connection. hr = pConnFrom->GetConnectedTo(&pConnTo); EXIT_ON_ERROR(hr) SAFE_RELEASE(pConnFrom) // Get the connector's IPart interface. hr = pConnTo->QueryInterface( __uuidof(IPart), (void**)&pPartPrev); EXIT_ON_ERROR(hr) SAFE_RELEASE(pConnTo) // Inner loop: Each iteration traverses one link in a // device topology and looks for input multiplexers. while (TRUE) { PartType parttype; IPartsList *pParts; // Follow downstream link to next part. hr = pPartPrev->EnumPartsOutgoing(&pParts); EXIT_ON_ERROR(hr) hr = pParts->GetPart(0, &pPartNext); pParts->Release(); EXIT_ON_ERROR(hr) hr = pPartNext->GetPartType(&parttype); EXIT_ON_ERROR(hr) LPWSTR pName; if (SUCCEEDED(pPartNext->GetName(&pName))) { // Failure of the following call means only that // the part is not a boost (micrphone boost). if (wcscmp(microphoneBoostName,pName) == 0) { //get IAudioVolumeLevel to control volume hr = pPartNext->Activate(CLSCTX_ALL, __uuidof(IAudioVolumeLevel), (void**)ppVolumeLevel); goto Exit; } CoTaskMemFree(pName); } GUID subType; pPartNext->GetSubType(&subType); if (parttype == Connector) { // We've reached the output connector that // lies at the end of this device topology. hr = pPartNext->QueryInterface( __uuidof(IConnector), (void**)&pConnFrom); EXIT_ON_ERROR(hr) SAFE_RELEASE(pPartPrev) SAFE_RELEASE(pPartNext) break; } SAFE_RELEASE(pPartPrev) pPartPrev = pPartNext; pPartNext = NULL; } } Exit: SAFE_RELEASE(pConnFrom) SAFE_RELEASE(pConnTo) SAFE_RELEASE(pPartPrev) SAFE_RELEASE(pPartNext) return hr; } void MixerWrap::MicphoneBoost(bool bIsBoost) { int mixerNum ;//总的混音器数量 HMIXER hMixer; //混音器设备句柄 MMRESULT mmr;//函数调用返回 MIXERCAPS MixerCaps; //混音器设备能力信息 MIXERLINE MixerLine;//线路的信息 //获取当前系统总的混音器数量 mixerNum= mixerGetNumDevs(); bool ifFind =false; for(int i=0;i<mixerNum;i++) { //打开混音器，第一个参数是记录混音器的handler,第二个参数是要打开的混音器ID mmr = mixerOpen(&hMixer, i, 0, 0L, MIXER_OBJECTF_MIXER); UINT uMxid; ifFind =false; //取混音器id，第一个参数是混音器的handler，第二个参数记录混音器的id //mmr = mixerGetID((HMIXEROBJ)hMixer,&uMxid,MIXER_OBJECTF_HMIXER); //获取混音器能力特征，如声音控制 和录音控制 mmr = mixerGetDevCaps((UINT)hMixer, &MixerCaps, sizeof(MixerCaps)); for(int j=0;j<MixerCaps.cDestinations;j++) //MixerCaps.cDestinations表示此混音器设备的audio line目标的数量, //如一个audio line目标为“音量控制”，另一个audio line目标为“录音控制”。 { memset(&MixerLine,0,sizeof(MIXERLINE)); MixerLine.cbStruct = sizeof(MixerLine); MixerLine.dwDestination = j; // 音量控制目标line的component类型为MIXERLINE_COMPONENTTYPE_DST_SPEAKERS // 录音控制目标line的component类型为MIXERLINE_COMPONENTTYPE_DST_WAVEIN //MixerLine.dwComponentType=MIXERLINE_COMPONENTTYPE_DST_WAVEIN; //mixerGetLineInfo 第三个参数可以是：MIXER_GETLINEINFOF_COMPONENTTYPE，MIXER_GETLINEINFOF_SOURCE，MIXER_GETLINEINFOF_DESTINATION等 //取录音控制 mmr = mixerGetLineInfo((HMIXEROBJ)hMixer, &MixerLine, MIXER_GETLINEINFOF_DESTINATION); DWORD dwConnections = MixerLine.cConnections; for ( int count = 0; count < dwConnections; count++ ) { MixerLine.dwSource = count; mmr=mixerGetLineInfo((HMIXEROBJ)hMixer,&MixerLine,MIXER_OBJECTF_MIXER | MIXER_GETLINEINFOF_SOURCE); if (MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE == MixerLine.dwComponentType) { //如果是录音控制的麦克风选项，则跳出 ifFind =true; break; } } if (ifFind) { break; } } if(!ifFind) continue; //获取麦克风选项 MIXERLINECONTROLS MixerLineControls; PMIXERCONTROL paMixerControls; paMixerControls = (PMIXERCONTROL)malloc(sizeof(MIXERCONTROL) * MixerLine.cControls); MixerLineControls.cbStruct = sizeof(MixerLineControls); MixerLineControls.dwLineID = MixerLine.dwLineID; MixerLineControls.cControls = MixerLine.cControls; MixerLineControls.cbmxctrl = sizeof(MIXERCONTROL); MixerLineControls.pamxctrl = paMixerControls; mmr = mixerGetLineControls((HMIXEROBJ)hMixer, &MixerLineControls, MIXER_GETLINECONTROLSF_ALL); int u ; ifFind =false; for ( u = 0; u < MixerLine.cControls; u++) { if (wcscmp(paMixerControls[u].szName,_T("麦克风加强"))==0) { ifFind =true; break; } } if (!ifFind) { continue; } MIXERCONTROL MixerControl; MixerLineControls.cbStruct = sizeof(MixerLineControls); MixerLineControls.dwControlID = paMixerControls[u].dwControlID; MixerLineControls.cbmxctrl = sizeof(MixerControl); MixerLineControls.pamxctrl = &MixerControl; mmr = mixerGetLineControls((HMIXEROBJ)hMixer, &MixerLineControls, MIXER_GETLINECONTROLSF_ONEBYID); free(paMixerControls); MIXERCONTROLDETAILS MixerControlDetails; PMIXERCONTROLDETAILS_BOOLEAN pMixerControlDetails_Boolean; pMixerControlDetails_Boolean = (PMIXERCONTROLDETAILS_BOOLEAN)malloc