[DirectShow] Virtual Audio Device

[cherishbox]

Win7 SP1 64Bit System;
VIA High Definition Audio;
Intel显示器音效;
Adobe Flash Media Live Encoder 3.2
Adobe Flash Player 11,8,800,94
Adobe Flash Builder 4.6
Microsoft Visual C++ 2010
Microsoft Windows SDK 7.1

我想录制Microphone和系统音频,
再藉由Flash Player发布.

在网上找到一个Sample: virtual-audio-capture-grabber-device
成功注册其DLL file.

C:\windows\system32>cd C:\Users\user\Desktop\virtual-audio-capture-grabber-devic
e-master(1)\virtual-audio-capture-grabber-device-master\source_code\Release

C:\Users\user\Desktop\virtual-audio-capture-grabber-device-master(1)\virtual-aud
io-capture-grabber-device-master\source_code\Release>regsvr32 audio_sniffer.dll

再以DirectShow附带的GraphEdt.exe可以找到virtual-audio-capturer,
使用WavDest Filter + File Writer Filter可以储存录制的音频为wav file,
且可以正常播放该file.


但在Flash Player的设定-->Microphone选项中,
找不到该virtual-audio-capturer,
只有Microphone (VIA High Definition Audio)和Stereo Mix (VIA High Definition Audio).

AS3 Code:

			var deviceArray:Array = Microphone.names;
			
			trace("Available sound input devices:"); 
			for (var i:int = 0; i < deviceArray.length; i++) 
			{ 
				trace(" " + deviceArray[i]); 
			} 

可是Adobe Flash Media Live Encoder 3.2找得到.


請問Flash Player 是否不支持DirectShow做的Virtual Device?
又或者我應該注意DirectShow Code的哪些地方?

謝謝

dll_main.cpp

#define CreateComObject(clsid, iid, var) CoCreateInstance( clsid, NULL, CLSCTX_INPROC_SERVER, iid, (void **)&var);

STDAPI AMovieSetupRegisterServer( CLSID   clsServer, LPCWSTR szDescription, LPCWSTR szFileName, LPCWSTR szThreadingModel = L"Both", LPCWSTR szServerType     = L"InprocServer32" );
STDAPI AMovieSetupUnregisterServer( CLSID clsServer );

#ifdef _WIN64
DEFINE_GUID(CLSID_VirtualCam,
            0x8e146464, 0xdb61, 0x4309, 0xaf, 0xa1, 0x35, 0x78, 0xe9, 0x27, 0xe9, 0x35);
#else
DEFINE_GUID(CLSID_VirtualCam,
            0x8e14549b, 0xdb61, 0x4309, 0xaf, 0xa1, 0x35, 0x78, 0xe9, 0x27, 0xe9, 0x35);
#endif

const AMOVIESETUP_MEDIATYPE AMSMediaTypesVCam = 
{ &MEDIATYPE_Audio      // clsMajorType
, &MEDIASUBTYPE_NULL }; // clsMinorType

const AMOVIESETUP_PIN AMSPinVCam=
{
    L"Output",             // Pin string name
    FALSE,                 // Is it rendered
    TRUE,                  // Is it an output
    FALSE,                 // Can we have none
    FALSE,                 // Can we have many
    &CLSID_NULL,           // Connects to filter
    NULL,                  // Connects to pin
    1,                     // Number of types
    &AMSMediaTypesVCam      // Pin Media types
};

const AMOVIESETUP_FILTER AMSFilterVCam =
{
    &CLSID_VirtualCam,  // Filter CLSID
    L"virtual-audio-capturer",     // String name
    MERIT_DO_NOT_USE,      // Filter merit
    1,                     // Number pins
    &AMSPinVCam             // Pin details
};

CFactoryTemplate g_Templates[] = 
{
    {
        L"virtual-audio-capturer",
        &CLSID_VirtualCam,
        CVCam::CreateInstance,
        NULL,
        &AMSFilterVCam
    },

};

int g_cTemplates = sizeof(g_Templates) / sizeof(g_Templates[0]);

STDAPI RegisterFilters( BOOL bRegister )
{
    HRESULT hr = NOERROR;
    WCHAR achFileName[MAX_PATH];
    char achTemp[MAX_PATH];
    ASSERT(g_hInst != 0);

    if( 0 == GetModuleFileNameA(g_hInst, achTemp, sizeof(achTemp))) 
        return AmHresultFromWin32(GetLastError());

    MultiByteToWideChar(CP_ACP, 0L, achTemp, lstrlenA(achTemp) + 1, 
                       achFileName, NUMELMS(achFileName));
  
    hr = CoInitialize(0);
    if(bRegister)
    {
        hr = AMovieSetupRegisterServer(CLSID_VirtualCam, L"virtual-audio-capturer", achFileName, L"Both", L"InprocServer32");
    }

    if( SUCCEEDED(hr) )
    {
        IFilterMapper2 *fm = 0;
        hr = CreateComObject( CLSID_FilterMapper2, IID_IFilterMapper2, fm );
        if( SUCCEEDED(hr) )
        {
            if(bRegister)
            {
                IMoniker *pMoniker = 0;
                REGFILTER2 rf2;
                rf2.dwVersion = 1;
                rf2.dwMerit = MERIT_DO_NOT_USE;
                rf2.cPins = 1;
                rf2.rgPins = &AMSPinVCam;
                hr = fm->RegisterFilter(CLSID_VirtualCam, L"virtual-audio-capturer", &pMoniker, &CLSID_AudioInputDeviceCategory, NULL, &rf2);
            }
            else
            {
                hr = fm->UnregisterFilter(&CLSID_AudioInputDeviceCategory, 0, CLSID_VirtualCam);
            }
        }

      // release interface
      if(fm)
          fm->Release();
    }

    if( SUCCEEDED(hr) && !bRegister )
        hr = AMovieSetupUnregisterServer( CLSID_VirtualCam );

    CoFreeUnusedLibraries();
    CoUninitialize();
    return hr;
}

#include <stdio.h>

STDAPI RegisterFilters( BOOL bRegister );

STDAPI DllRegisterServer()
{
	printf("hello there"); // we actually never see this...
    return RegisterFilters(TRUE);
}

STDAPI DllUnregisterServer()
{
    return RegisterFilters(FALSE);
}

STDAPI DllEntryPoint(HINSTANCE, ULONG, LPVOID);

extern "C" BOOL APIENTRY DllMain(HANDLE hModule, DWORD  dwReason, LPVOID lpReserved)
{
	return DllEntryPoint((HINSTANCE)(hModule), dwReason, lpReserved);
}

其他virtual-audio-capture-grabber-device代码, 请参考上文的连结

[cherishbox]

1.加上Analog Audio Input Pin 2.Implement IAMAudioInputMixer interface 请问是否如此便可以将这个虚拟音频装置, 注册到: HKEY_CURRENT_USER/Software/Microsoft/ActiveMovie/devenum/ {33D9A762-90C8-11D0-BD43-00A0C911CE86}, 然后Flash Player便找得着了?