其他函数：查看枚举类型。

GameAssist/GameAssist/GameAssist.cpp

@@ -7,12 +7,13 @@
 #include "GameAssistDlg.h"
 
 // directx
+#include <Dshow.h>
 #include <strmif.h>
 #pragma comment(lib, "strmiids.lib")
 #define VI_MAX_CAMERAS 20
-DEFINE_GUID(CLSID_SystemDeviceEnum, 0x62be5d10, 0x60eb, 0x11d0, 0xbd, 0x3b, 0x00, 0xa0, 0xc9, 0x11, 0xce, 0x86);
-DEFINE_GUID(CLSID_VideoInputDeviceCategory, 0x860bb310, 0x5d01, 0x11d0, 0xbd, 0x3b, 0x00, 0xa0, 0xc9, 0x11, 0xce, 0x86);
-DEFINE_GUID(IID_ICreateDevEnum, 0x29840822, 0x5b84, 0x11d0, 0xbd, 0x3b, 0x00, 0xa0, 0xc9, 0x11, 0xce, 0x86);
+// DEFINE_GUID(CLSID_SystemDeviceEnum, 0x62be5d10, 0x60eb, 0x11d0, 0xbd, 0x3b, 0x00, 0xa0, 0xc9, 0x11, 0xce, 0x86);
+// DEFINE_GUID(CLSID_VideoInputDeviceCategory, 0x860bb310, 0x5d01, 0x11d0, 0xbd, 0x3b, 0x00, 0xa0, 0xc9, 0x11, 0xce, 0x86);
+// DEFINE_GUID(IID_ICreateDevEnum, 0x29840822, 0x5b84, 0x11d0, 0xbd, 0x3b, 0x00, 0xa0, 0xc9, 0x11, 0xce, 0x86);
 
 #ifdef _DEBUG
 #define new DEBUG_NEW
@@ -21,10 +22,11 @@ DEFINE_GUID(IID_ICreateDevEnum, 0x29840822, 0x5b84, 0x11d0, 0xbd, 0x3b, 0x00, 0x
 //列出硬件设备
 int listDevices(std::vector<std::string>& list)
 {
+	// 初始化COM环境;
+	::CoInitialize(NULL);
 	ICreateDevEnum *pDevEnum = NULL;
 	IEnumMoniker *pEnum = NULL;
-	int deviceCounter = 0;
-	CoInitialize(NULL);
+	int deviceCounter = 0;	
 
 	//HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum,NULL,CLSCTX_INPROC_SERVER,IID_ICreateDevEnum,reinterpret_cast<void**>(&pDevEnum));
 	HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum,NULL,CLSCTX_INPROC_SERVER,IID_ICreateDevEnum,(void**)(&pDevEnum));
@@ -79,9 +81,199 @@ int listDevices(std::vector<std::string>& list)
 			pEnum = NULL;
 		}
 	}
+
+	// 释放COM环境;
+	::CoUninitialize();
+
 	return deviceCounter;
 }
 
+#define OUTPUT_PIN       1
+#define OUTPUT_MEDIATYPE 1
+
+char* GuidToString(const GUID &guid)
+{
+	int buf_len=64;
+	char *buf =(char *)malloc(buf_len);
+	_stprintf_s(
+		buf,
+		buf_len,
+		"{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
+		guid.Data1, guid.Data2, guid.Data3,
+		guid.Data4[0], guid.Data4[1],
+		guid.Data4[2], guid.Data4[3],
+		guid.Data4[4], guid.Data4[5],
+		guid.Data4[6], guid.Data4[7]);
+	//printf("%s\n",buf);
+	return buf;
+}
+
+int DirectShowDemo()
+{
+	// Init COM
+	HRESULT hr=NULL;
+	hr= CoInitialize(NULL);
+	if (FAILED(hr)){
+		printf("Error, Can not init COM.");
+		return -1;
+	}
+	printf("===============Directshow Filters ===============\n");
+	ICreateDevEnum *pSysDevEnum = NULL;
+	hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (void **)&pSysDevEnum);
+	if (FAILED(hr)){
+		return hr;
+	}
+ 
+	IEnumMoniker *pEnumCat = NULL;
+	//Category	
+	/************************************************************************
+	Friendly Name	                      CLSID
+	-------------------------------------------------------------------------
+	Audio Capture Sources	              CLSID_AudioInputDeviceCategory
+	Audio Compressors	                  CLSID_AudioCompressorCategory
+	Audio Renderers	                      CLSID_AudioRendererCategory
+	Device Control Filters	              CLSID_DeviceControlCategory
+	DirectShow Filters	                  CLSID_LegacyAmFilterCategory
+	External Renderers	                  CLSID_TransmitCategory
+	Midi Renderers	                      CLSID_MidiRendererCategory
+	Video Capture Sources	              CLSID_VideoInputDeviceCategory
+	Video Compressors	                  CLSID_VideoCompressorCategory
+	WDM Stream Decompression Devices	  CLSID_DVDHWDecodersCategory
+	WDM Streaming Capture Devices	      AM_KSCATEGORY_CAPTURE
+	WDM Streaming Crossbar Devices	      AM_KSCATEGORY_CROSSBAR
+	WDM Streaming Rendering Devices	      AM_KSCATEGORY_RENDER
+	WDM Streaming Tee/Splitter Devices	  AM_KSCATEGORY_SPLITTER
+	WDM Streaming TV Audio Devices	      AM_KSCATEGORY_TVAUDIO
+	WDM Streaming TV Tuner Devices	      AM_KSCATEGORY_TVTUNER
+	WDM Streaming VBI Codecs	          AM_KSCATEGORY_VBICODEC 
+	************************************************************************/
+	hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoCompressorCategory, &pEnumCat, 0);
+	//hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
+	//hr = pSysDevEnum->CreateClassEnumerator(CLSID_AudioCompressorCategory, &pEnumCat, 0);
+	//hr = pSysDevEnum->CreateClassEnumerator(CLSID_AudioInputDeviceCategory, &pEnumCat, 0);
+	//hr = pSysDevEnum->CreateClassEnumerator(CLSID_MediaMultiplexerCategory, &pEnumCat, 0);
+	//hr = pSysDevEnum->CreateClassEnumerator(CLSID_LegacyAmFilterCategory, &pEnumCat, 0);
+ 
+	if (hr != S_OK) {
+		pSysDevEnum->Release();
+		return -1;
+	}
+	
+	IMoniker *pMoniker = NULL;
+	ULONG monikerFetched;
+	//Filter
+	while(pEnumCat->Next(1, &pMoniker, &monikerFetched) == S_OK){
+		IPropertyBag *pPropBag;
+		VARIANT varName;
+		IBaseFilter *pFilter;
+		hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag,(void **)&pPropBag);
+		if (FAILED(hr)){
+			pMoniker->Release();
+			continue;
+		}
+		VariantInit(&varName);
+		hr = pPropBag->Read(L"FriendlyName", &varName, 0);
+		//"FriendlyName": The name of the device.
+		//"Description": A description of the device.
+		//Filter Info================
+		_tprintf_s(_T("[%ls]\n"),varName.bstrVal);
+		VariantClear(&varName);
+		//========================
+#if OUTPUT_PIN
+		hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,(void**)&pFilter);
+		if (!pFilter){
+			continue;
+		}
+ 
+		IEnumPins * pinEnum = NULL;
+		IPin * pin = NULL;
+		ULONG pinFetched = 0;
+		if (FAILED(pFilter->EnumPins(&pinEnum))){
+			pinEnum->Release();
+			continue;	
+		}
+		pinEnum->Reset();
+		//Pin Info
+		while (SUCCEEDED(pinEnum->Next(1, &pin, &pinFetched)) && pinFetched){
+			if (!pin){
+				continue;
+			}
+			PIN_INFO pinInfo;
+			if (FAILED(pin->QueryPinInfo(&pinInfo))){
+				continue;
+			}
+			printf("\t[Pin] ");
+				switch(pinInfo.dir){
+				case PINDIR_INPUT:printf("Dir:Input  \t");break;
+				case PINDIR_OUTPUT:printf("Dir:Output \t");break;
+				default:printf("Dir:Unknown\n");break;
+			}
+			_tprintf_s(_T("Name:%ls\n"),pinInfo.achName);
+					
+			//MediaType
+#if OUTPUT_MEDIATYPE
+			IEnumMediaTypes *mtEnum=NULL;
+			AM_MEDIA_TYPE   *mt=NULL;
+			if( FAILED( pin->EnumMediaTypes( &mtEnum )) )
+				break;
+			mtEnum->Reset();
+			
+			ULONG mtFetched = 0;
+ 
+			while (SUCCEEDED(mtEnum->Next(1, &mt, &mtFetched)) && mtFetched){
+ 
+				printf("\t\t[MediaType]\n");
+				//Video
+				char *MEDIATYPE_Video_str=GuidToString(MEDIATYPE_Video);
+				//Audio
+				char *MEDIATYPE_Audio_str=GuidToString(MEDIATYPE_Audio);
+				//Stream
+				char *MEDIATYPE_Stream_str=GuidToString(MEDIATYPE_Stream);
+				//Majortype
+				char *majortype_str=GuidToString(mt->majortype);
+				//Subtype
+				char *subtype_str=GuidToString(mt->subtype);
+ 
+				printf("\t\t  Majortype:");
+				if(strcmp(majortype_str,MEDIATYPE_Video_str)==0){
+					printf("Video\n");
+				}else if(strcmp(majortype_str,MEDIATYPE_Audio_str)==0){
+					printf("Audio\n");
+				}else if(strcmp(majortype_str,MEDIATYPE_Stream_str)==0){
+					printf("Stream\n");
+				}else{
+					printf("Other\n");
+				}
+				printf("\t\t  Subtype GUID:%s",subtype_str);
+ 
+				free(MEDIATYPE_Video_str);
+				free(MEDIATYPE_Audio_str);
+				free(MEDIATYPE_Stream_str);
+				free(subtype_str);
+				free(majortype_str);
+				printf("\n");
+ 
+			}
+#endif
+			pin->Release();
+				
+		}
+		pinEnum->Release();
+ 
+		pFilter->Release();
+#endif
+		
+		pPropBag->Release();
+		pMoniker->Release();
+	}
+	pEnumCat->Release();
+	pSysDevEnum->Release();
+	printf("=================================================\n");
+	CoUninitialize();
+	return 0;
+
+}
+
 // CGameAssistApp
 
 BEGIN_MESSAGE_MAP(CGameAssistApp, CWinAppEx)
@@ -122,6 +314,7 @@ BOOL CGameAssistApp::InitInstance()
 	AfxEnableControlContainer();
 
 #if 1
+	DirectShowDemo();
 	std::vector<std::string> vtDevices;
 	listDevices(vtDevices);
 	// 枚举USB摄像头设备;