WaveIn Volume

[Letters]

Hallo,

ich würde gerne das volume level verschiedener vorhandener wave in geräte über die windows api setzen. ( win 2k - xp )

Leider finde ich dort nur waveOutSetVolume, kennt jemand eine möglichkeit ?

[Letters]

ich hab es jetzt so probiert.

#include <iostream>
#include <windows.h>
#include <Mmsystem.h>
// Remeber to Link WinMM.lib!
// Written by Letters
using namespace std;

int main()
{
    UINT MDevNum = mixerGetNumDevs();
    cout << MDevNum << " Mixer Devices\n";
    MIXERCAPS MCapabilities;
    HMIXER hMixer;
    for ( UINT i = 0; i < MDevNum; i++ ){
        fill( (char*)&MCapabilities, (char*)&MCapabilities + sizeof( MIXERCAPS ), 0 );
        if ( mixerGetDevCaps( i, &MCapabilities, sizeof( MIXERCAPS ) ) == MMSYSERR_NOERROR ){
            cout << "Information for Dev: " << i << endl;
            cout << MCapabilities.szPname << endl;
            if ( mixerOpen( &hMixer, i, 0, 0, MIXER_OBJECTF_WAVEIN ) == MMSYSERR_NOERROR ){
                cout << "Device Opened\n";
                MIXERLINE ML;
                fill( (char*)&ML, (char*)&ML + sizeof( MIXERLINE ), 0 );
                ML.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_WAVEIN;
                ML.cbStruct = sizeof( MIXERLINE );
                if ( mixerGetLineInfo( (HMIXEROBJ)hMixer, &ML, MIXER_GETLINEINFOF_COMPONENTTYPE ) == MMSYSERR_NOERROR ){
                    cout << "Recieved Mixer Line\n";
                    cout << "Has " << ML.cConnections << " Connections\n";
                    MIXERLINECONTROLS MLC;
                    MIXERCONTROL MC;
                    for ( UINT n = 0; n < ML.cConnections; n++ ){
                        fill( (char*)&MLC, (char*)&MLC + sizeof( MIXERLINECONTROLS ), 0 );
                        fill( (char*)&MC, (char*)&MC + sizeof( MIXERCONTROL ), 0 );
                        cout << "Setting Mixer Line: " << n << endl;
                        MLC.cbStruct = sizeof( MIXERLINECONTROLS );
                        MLC.dwLineID = ML.dwLineID;
                        MLC.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME;
                        MLC.cControls = 1;
                        MLC.pamxctrl = &MC;
                        MLC.cbmxctrl = sizeof( MIXERCONTROL );
                        if ( mixerGetLineControls( (HMIXEROBJ)hMixer, &MLC, MIXER_GETLINECONTROLSF_ONEBYTYPE) == MMSYSERR_NOERROR ){
                            MIXERCONTROLDETAILS MCD;
                            MIXERCONTROLDETAILS_UNSIGNED  Volume;
                            fill( (char*)&MCD, (char*)&MCD + sizeof( MIXERCONTROLDETAILS ), 0 );
                            fill( (char*)&Volume, (char*)&Volume + sizeof( MIXERCONTROLDETAILS_UNSIGNED ), 0 );
                            MCD.dwControlID = MLC.dwControlID;
                            MCD.cbStruct = sizeof( MIXERCONTROLDETAILS );
                            MCD.cMultipleItems = 0;
                            MCD.cbDetails = sizeof( MIXERCONTROLDETAILS_UNSIGNED );
                            MCD.paDetails = &Volume;
                            MCD.cChannels = 1;
                            Volume.dwValue = 32000;
                            //if ( mixerSetControlDetails( (HMIXEROBJ)hMixer, &MCD, MIXER_SETCONTROLDETAILSF_VALUE ) == MMSYSERR_NOERROR )
                            int Ret = mixerSetControlDetails( (HMIXEROBJ)hMixer, &MCD, MIXER_SETCONTROLDETAILSF_VALUE );
                            if ( Ret == MMSYSERR_NOERROR )
                                cout << "\tVolume successfuly set\n";
                            else cout << "\tCouldn't set volume Error: 0x" << hex << Ret << endl;
                        }else cout << "\tCouldn't retrieve one by type\n";
                    }
                }else cout << "\tCouldn't recieve Mixer Line\n";
                mixerClose( hMixer );
            }else cout << "\tCouldn't open Mixer\n";
        }else cout << "\tCouldn't retrieve Mixer capabilities\n";
    }
    return 0;
}

leider endet das mit einem "Couldn't set volume" und dem error code 401h