AUDIO Windows + Mute Microphone

**zymoplexil** · 11/10/2018, 15h26

Bonjour

J'ai un problème pour faire passer à mute mon micro dans Windows 10 .

Le mute sur la sortie HP fonctionne bien

Code :

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deviceEnumerator.EnumAudioEndpoints(eRender,DEVICE_STATE_ACTIVE,lst);

Mais quand j'essai sur le micro rien ne se passe

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deviceEnumerator.EnumAudioEndpoints(eCapture,DEVICE_STATE_ACTIVE,lst);

Ci-joint le code :

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unit MMDevApi;
 
{$MINENUMSIZE 4}
{$WEAKPACKAGEUNIT}
 
interface
 
uses
 Windows, ActiveX, ComObj, propsys;
 
const
 CLASS_IMMDeviceEnumerator: TGUID = '{BCDE0395-E52F-467C-8E3D-C4579291692E}';
 IID_IMMDeviceEnumerator: TGUID = '{A95664D2-9614-4F35-A746-DE8DB63617E6}';
 IID_IMMDevice: TGUID = '{D666063F-1587-4E43-81F1-B948E807363F}';
 IID_IMMDeviceCollection: TGUID = '{0BD7A1BE-7A1A-44DB-8397-CC5392387B5E}';
 IID_IAudioEndpointVolume: TGUID = '{5CDF2C82-841E-4546-9722-0CF74078229A}';
 IID_IAudioMeterInformation: TGUID = '{C02216F6-8C67-4B5B-9D00-D008E73E0064}';
 IID_IAudioEndpointVolumeCallback: TGUID = '{657804FA-D6AD-4496-8A60-352752AF4F89}';
 // undocumented
 IID_IRemoteAudioSession: TGUID = '{33969B1D-D06F-4281-B837-7EAAFD21A9C0}';
 IID_IAudioSessionQuerier: TGUID = '{94BE9D30-53AC-4802-829C-F13E5AD34776}';
 IID_IAudioSessionQuery: TGUID = '{94BE9D30-53AC-4802-829C-F13E5AD34775}';
 //
 IID_IAudioSessionEvents: TGUID = '{24918ACC-64B3-37C1-8CA9-74A66E9957A8}';
 IID_IAudioSessionControl: TGUID = '{F4B1A599-7266-4319-A8CA-E70ACB11E8CD}';
 IID_ISimpleAudioVolume: TGUID = '{87CE5498-68D6-44E5-9215-6DA47EF883D8}';
 IID_IAudioSessionManager: TGUID = '{BFA971F1-4D5E-40BB-935E-967039BFBEE4}';
 IID_IAudioClient: TGUID = '{1CB9AD4C-DBFA-4c32-B178-C2F568A703B2}';
 
 DEVICE_STATE_ACTIVE = $00000001;
 DEVICE_STATE_DISABLE = $00000002;
 DEVICE_STATE_NOTPRESENT = $00000004;
 DEVICE_STATE_UNPLUGGED = $00000008;
 DEVICE_STATEMASK_ALL = $0000000F;
 
 // QueryHardwareSupport
 ENDPOINT_HARDWARE_SUPPORT_VOLUME = $00000001;
 ENDPOINT_HARDWARE_SUPPORT_MUTE = $00000002;
 ENDPOINT_HARDWARE_SUPPORT_METER = $00000004;
 
 
type
 EDataFlow = TOleEnum;
 
const
 eRender = $00000000;
 eCapture = $00000001;
 eAll = $00000002;
 EDataFlow_enum_count = $00000003;
 
type
 ERole = TOleEnum;
 
const
 eConsole = $00000000;
 eMultimedia = $00000001;
 eCommunications = $00000002;
 ERole_enum_count = $00000003;
 // AudioSessionState
 AudioSessionStateInactive = 0;
 AudioSessionStateActive = 1;
 AudioSessionStateExpired = 2;
 // AudioSessionDisconnectReason
 DisconnectReasonDeviceRemoval = 0;
 DisconnectReasonServerShutdown = DisconnectReasonDeviceRemoval + 1;
 DisconnectReasonFormatChanged = DisconnectReasonServerShutdown + 1;
 DisconnectReasonSessionLogoff = DisconnectReasonFormatChanged + 1;
 DisconnectReasonSessionDisconnected = DisconnectReasonSessionLogoff + 1;
 DisconnectReasonExclusiveModeOverride = DisconnectReasonSessionDisconnected + 1;
 
 
type
 PAUDIO_VOLUME_NOTIFICATION_DATA = ^AUDIO_VOLUME_NOTIFICATION_DATA;
 AUDIO_VOLUME_NOTIFICATION_DATA = packed record
  guidEventContext: TGUID;
  bMuted: BOOL;
  fMasterVolume: Single;
  nChannels: UINT;
  afChannelVolumes: array[1..1] of Single;
 end;
 
type
 IAudioClient = interface(IUnknown)
  ['{1CB9AD4C-DBFA-4c32-B178-C2F568A703B2}']
 end;
 
 IAudioEndpointVolumeCallback = interface(IUnknown)
  ['{657804FA-D6AD-4496-8A60-352752AF4F89}']
  function OnNotify(pNotify: PAUDIO_VOLUME_NOTIFICATION_DATA): HRESULT; stdcall;
 end;
 
 IAudioEndpointVolume = interface(IUnknown)
  ['{5CDF2C82-841E-4546-9722-0CF74078229A}']
  function RegisterControlChangeNotify(pNotify: IAudioEndpointVolumeCallback): HRESULT; stdcall;
  function UnregisterControlChangeNotify(pNotify: IAudioEndpointVolumeCallback): HRESULT; stdcall;
  function GetChannelCount(var pnChannelCount: uint): HRESULT; stdcall;
  function SetMasterVolumeLevel(fLevelDB: Single; pguidEventContext: PGuid): HRESULT; stdcall;
  function SetMasterVolumeLevelScalar(fLevel: Single; pguidEventContext: PGuid): HRESULT; stdcall;
  function GetMasterVolumeLevel(var pfLevelDB: Single): HRESULT; stdcall
   ;
  function GetMasterVolumeLevelScalar(var pfLevel: Single): HRESULT; stdcall;
  function SetChannelVolumeLevel(nChannel: uint; fLevelDB: Single; pguidEventContext: PGuid): HRESULT; stdcall;
  function SetChannelVolumeLevelScalar(nChannel: uint; fLevel: Single; pguidEventContext: PGuid): HRESULT; stdcall
   ;
  function GetChannelVolumeLevel(nChannel: uint; fLevelDB: Single): HRESULT; stdcall;
  function GetChannelVolumeLevelScalar(nChannel: uint; fLevel: Single): HRESULT; stdcall;
  function SetMute(bMute: bool; pguidEventContext: PGuid): HRESULT; stdcall;
  function GetMute(var pbMute: bool): HRESULT; stdcall;
  function GetVolumeStepInfo(var pnStep: uint; var pnStepCount: uint): HRESULT; stdcall;
  function VolumeStepUp(pguidEventContext: PGuid): HRESULT; stdcall;
  function VolumeStepDown(pguidEventContext: PGuid): HRESULT; stdcall;
  function QueryHardwareSupport(var pdwHardwareSupportMask: uint): HRESULT; stdcall;
  function GetVolumeRange(var pflVolumeMindB: Single; var pflVolumeMaxdB: Single;
   var pflVolumeIncrementdB: Single): HRESULT; stdcall;
 end;
 
 IAudioMeterInformation = interface(IUnknown)
  ['{C02216F6-8C67-4B5B-9D00-D008E73E0064}']
  function GetPeakValue(out pfPeak: Single): HResult; stdcall;
  function GetMeteringChannelCount(out pnChannelCount: uint): HResult; stdcall;
  function GetChannelsPeakValues(u32ChannelCount: uint; afPeakValues: pSingle): HResult; stdcall;
  function QueryHardwareSupport(out pdwHardwareSupportMask: uint): HResult; stdcall;
 end;
 
 IMMDevice = interface(IUnknown)
  ['{D666063F-1587-4E43-81F1-B948E807363F}']
  function Activate(const iid: TGUID; dwClsCtx: uint; pActivationParams: PPropVariant; out ppInterface: IUnknown): HRESULT; stdcall;
  function OpenPropertyStore(stgmAccess: integer; out ppProperties: IPropertyStore): HRESULT; stdcall;
  function GetId(ppstrId: PWChar): HRESULT; stdcall;
  function GetState(var pdwState: uint): HRESULT; stdcall;
 end;
 
 
 IMMDeviceCollection = interface(IUnknown)
  ['{0BD7A1BE-7A1A-44DB-8397-CC5392387B5E}']
  function GetCount(var pcDevices: uint): HRESULT; stdcall;
  function Item(nDevice: uint; out ppDevice: IMMDevice): HRESULT; stdcall;
 end;
 
 IMMNotificationClient = interface(IUnknown)
  ['{7991EEC9-7E89-4D85-8390-6C703CEC60C0}']
 end;
 
 IMMDeviceEnumerator = interface(IUnknown)
  ['{A95664D2-9614-4F35-A746-DE8DB63617E6}']
  function EnumAudioEndpoints(dataFlow: EDataFlow; dwStateMask: DWORD; out ppDevices: IMMDeviceCollection): HRESULT; stdcall;
  function GetDefaultAudioEndpoint(dataFlow: EDataFlow; role: ERole; out ppEndpoint: IMMDevice): HRESULT; stdcall;
  function GetDevice(pwstrId: PWChar; out ppDevice: IMMDevice): HRESULT; stdcall;
  function RegisterEndpointNotificationCallback(var pClient: IMMNotificationClient): HRESULT; stdcall;
  function UnregisterEndpointNotificationCallback(var pClient: IMMNotificationClient): HRESULT; stdcall;
 end;
 
 { undocumented }
 IRemoteAudioSession = interface(IUnknown)
  ['{33969B1D-D06F-4281-B837-7EAAFD21A9C0}']
  function func_a: HResult; stdcall;
  function func_b: HResult; stdcall;
  function func_c: HResult; stdcall;
  function func_d: HResult; stdcall;
  function func_e: HResult; stdcall;
  function func_f: HResult; stdcall;
  function func_g: HResult; stdcall;
  function func_h: HResult; stdcall;
  function func_i: HResult; stdcall;
  function func_j: HResult; stdcall;
  function func_k: HResult; stdcall;
  function GetProcessID(out pid: uint): HResult; stdcall;
 end;
 
 { undocumented }
 IAudioSessionQuerier = interface(IUnknown)
  ['{94BE9D30-53AC-4802-829C-F13E5AD34776}']
  function GetNumSessions(out NumSessions: uint): HResult; stdcall;
  function QuerySession(Num: uint; out Session: IUnknown): HResult; stdcall;
 end;
 { undocumented }
 IAudioSessionQuery = interface(IUnknown)
  ['{94BE9D30-53AC-4802-829C-F13E5AD34775}']
  function GetQueryInterface(out AudioQuerier: IAudioSessionQuerier): HResult; stdcall;
 end;
 
 IAudioSessionEvents = interface(IUnknown)
  ['{24918ACC-64B3-37C1-8CA9-74A66E9957A8}']
  function OnDisplayNameChanged(NewDisplayName: LPCWSTR; EventContext: pGuid): HResult; stdcall;
  function OnIconPathChanged(NewIconPath: LPCWSTR; EventContext: pGuid): HResult; stdcall;
  function OnSimpleVolumeChanged(NewVolume: Single; NewMute: LongBool; EventContext: pGuid): HResult; stdcall;
  function OnChannelVolumeChanged(ChannelCount: uint; NewChannelArray: PSingle; ChangedChannel: uint;
   EventContext: pGuid): HResult; stdcall;
  function OnGroupingParamChanged(NewGroupingParam, EventContext: pGuid): HResult; stdcall;
  function OnStateChanged(NewState: uint): HResult; stdcall; // AudioSessionState
  function OnSessionDisconnected(DisconnectReason: uint): HResult; stdcall; // AudioSessionDisconnectReason
 end;
 
 IAudioSessionControl = interface(IUnknown)
  ['{F4B1A599-7266-4319-A8CA-E70ACB11E8CD}']
  function GetState(out pRetVal: uint): HResult; stdcall;
  function GetDisplayName(out pRetVal: LPWSTR): HResult; stdcall; // pRetVal must be freed by CoTaskMemFree
  function SetDisplayName(Value: LPCWSTR; EventContext: pGuid): HResult; stdcall;
  function GetIconPath(out pRetVal: LPWSTR): HResult; stdcall; // pRetVal must be freed by CoTaskMemFree
  function SetIconPath(Value: LPCWSTR; EventContext: pGuid): HResult; stdcall;
  function GetGroupingParam(pRetVal: pGuid): HResult; stdcall;
  function SetGroupingParam(OverrideValue, EventContext: pGuid): HResult; stdcall;
  function RegisterAudioSessionNotification(const NewNotifications: IAudioSessionEvents): HResult; stdcall;
  function UnregisterAudioSessionNotification(const NewNotifications: IAudioSessionEvents): HResult; stdcall;
 end;
 
 ISimpleAudioVolume = interface(IUnknown)
  ['{87CE5498-68D6-44E5-9215-6DA47EF883D8}']
  function SetMasterVolume(fLevel: Single; EventContext: pGuid): HResult; stdcall;
  function GetMasterVolume(out fLevel: Single): HResult; stdcall;
  function SetMute(bMute: LongBool; EventContext: pGuid): HResult; stdcall;
  function GetMute(out bMute: LongBool): HResult; stdcall;
 end;
 
 IAudioSessionManager = interface(IUnknown)
  ['{BFA971F1-4D5E-40BB-935E-967039BFBEE4}']
  function GetAudioSessionControl(AudioSessionGuid: pGUID; StreamFlag: uint;
   out SessionControl: IAudioSessionControl): HResult; stdcall;
  function GetSimpleAudioVolume(AudioSessionGuid: pGuid; StreamFlag: uint;
   out AudioVolume: ISimpleAudioVolume): HResult; stdcall;
 end;
 
// get ISimpleAudioVolume from ProcessID
function GetSimpleAudioVolumeFromPid(const AudioDevice: IMMDevice; pid: uint; out SimpleAudio: ISimpleAudioVolume; out currguid: tguid): Boolean; stdcall;
// get ISimpleAudioVolume from Process Handle
function GetSimpleAudioVolumeFromHandle(const AudioDevice: IMMDevice; Hnd: uint; out SimpleAudio: ISimpleAudioVolume; out currguid: tguid): Boolean; stdcall;
//
function GetSimpleAudioVolumeFromModuleName(const AudioDevice: IMMDevice; ModuleName: pWideChar; out SimpleAudio: ISimpleAudioVolume; out currguid: tguid): Boolean; stdcall;
 
implementation
 
uses tlhelp32;
 
function GetProcessIdFromModuleName(ModuleName: pWideChar): LongWord;
var
 ToolSnap: LongWord;
 ProcessEntry: ProcessEntry32W;
 bCont: LongBool;
 ModuleName16: WideString;
begin
 Result := 0;
 ModuleName16 := ModuleName;
 ToolSnap := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
 ProcessEntry.dwSize := sizeof(ProcessEntry);
 bCont := Process32FirstW(ToolSnap, ProcessEntry);
 while bCont do begin
  if ProcessEntry.szExeFile = ModuleName16 then
   Result := ProcessEntry.th32ProcessID;
  ProcessEntry.dwSize := sizeof(ProcessEntry);
  bCont := (Result = 0) and Process32NextW(ToolSnap, ProcessEntry);
 end;
 CloseHandle(ToolSnap);
end;
 
function GetSimpleAudioVolumeFromModuleName(const AudioDevice: IMMDevice; ModuleName: pWideChar; out SimpleAudio: ISimpleAudioVolume; out currguid: tguid): Boolean; stdcall;
var
 pid: LongWord;
begin
 pid := GetProcessIdFromModuleName(ModuleName);
 Result := GetSimpleAudioVolumeFromPid(AudioDevice, pid, SimpleAudio, currguid);
end;
 
function GetSimpleAudioVolumeFromHandle(const AudioDevice: IMMDevice; Hnd: uint; out SimpleAudio: ISimpleAudioVolume; out currguid: tguid): Boolean; stdcall;
var
 pid: uint;
begin
 GetWindowThreadProcessId(Hnd, pid);
 Result := GetSimpleAudioVolumeFromPid(AudioDevice, pid, SimpleAudio, currguid);
end;
 
function GetSimpleAudioVolumeFromPid(const AudioDevice: IMMDevice; pid: uint; out SimpleAudio: ISimpleAudioVolume; out currguid: tguid): Boolean; stdcall;
var
 SessionManager: IAudioSessionManager;
 SessionQuery: IAudioSessionQuery;
 SessionQuerier: IAudioSessionQuerier;
 RemoteSession: IRemoteAudioSession;
 SessionControl: IAudioSessionControl;
 dummy: IUnknown;
 MaxSession, Sessionpid: uint;
 hr, i: Integer;
begin
 Result := False;
 SessionManager := nil;
 SessionQuery := nil;
 SessionQuerier := nil;
 SessionControl := nil;
 
 // get AudioSessionManager
 hr := AudioDevice.Activate(IID_IAudioSessionManager, CLSCTX_ALL, nil, IUnknown(SessionManager));
 if Succeeded(hr) then begin
  // get SessionQuery
  hr := SessionManager.QueryInterface(IID_IAudioSessionQuery, SessionQuery);
  if Succeeded(hr) then begin
   // get SessionQuerier
   hr := SessionQuery.GetQueryInterface(SessionQuerier);
   if Succeeded(hr) then begin
   // check sessions
   hr := SessionQuerier.GetNumSessions(MaxSession);
   if Succeeded(hr) then
    if MaxSession > 0 then
     for i := 0 to MaxSession - 1 do begin
      dummy := nil;
      hr := SessionQuerier.QuerySession(i, dummy);
      RemoteSession := nil;
      if Succeeded(hr) then begin
      // get RemoteSession
      hr := dummy.QueryInterface(IID_IRemoteAudioSession, RemoteSession);
      if Succeeded(hr) then begin
       // compare ProcessID
       if Succeeded(RemoteSession.GetProcessID(Sessionpid)) then
        if Sessionpid <> 0 then
         if Sessionpid = pid then begin
         Result := Succeeded(RemoteSession.QueryInterface(IID_ISimpleAudioVolume, SimpleAudio));
         if Succeeded(dummy.QueryInterface(IID_IAudioSessionControl, SessionControl)) then
          SessionControl.GetGroupingParam(@currguid);
         SessionControl := nil;
         end;
       if Result then
        Break;
      end;
      end;
     end;
   RemoteSession := nil;
   SessionQuerier := nil;
   end;
   SessionQuery := nil;
  end;
  SessionManager := nil;
 end;
end;
 
end.

Dans ma Form :

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procedure TForm8.FormCreate(Sender: TObject);
var
 deviceEnumerator: IMMDeviceEnumerator;
 lst : IMMDeviceCollection;
 defaultDevice: IMMDevice;
 i : integer;
 deviceCount : Cardinal;
 device :IMMDevice ;
 
 
begin
 CoCreateInstance (CLASS_IMMDeviceEnumerator, nil, CLSCTX_INPROC_SERVER, IID_IMMDeviceEnumerator, deviceEnumerator);
 deviceEnumerator.EnumAudioEndpoints(eRender,DEVICE_STATE_ACTIVE,lst);
 lst.GetCount(deviceCount);
 
 
 
for i:=0 to deviceCount-1 do
begin
lst.Item(i, device);
endpointVolume:=nil;
device.Activate(IID_IAudioEndpointVolume, CLSCTX_INPROC_SERVER, nil,IUnknown(endpointVolume));
endpointVolume.SetMute(false,nil);
end;
 
end;

Merci

AUDIO Windows + Mute Microphone

Delphi

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