語音類
1)在構造語音類之前，必須先設定好工程環境：
a、從微軟官方網站下載windows speech sdk並安裝，然後在Visual Studio 6.0中進行相關設定，在Project Setings選項的C++選項卡的“分類：前置處理器”添加“,__WIN32_DCOM”(為預先初始化COM組件成功)；
b、將預先處理標頭檔選項選中“自動使用預補償頁首”；
c、在常規選項卡中選擇“實用MFC靜態串連庫”；
入圖：（一）
2)封裝語音類
由於採用物件導向的編程理念，藉助UML（Unified Modeling Language整合模組化語言）構造CSPEECH語音類如下
CSPEECH類
+ void InitSR(); //初始化語音
+void RecoEvent();//識別命令函數
+BOOL b_initSR;
+BOOL b_Cmd_Grammar;
//3個語音介面
+CComPtr m_cpRecocontxt;
+CComPtr m_cpRecoGrammar;
+CComPtr m_cpRecoEngine;
然後開始添加語音類，需要注意的是在定義語音類的標頭檔中，包含〈sphelper.h〉並且自訂語音辨識訊息和類型
#define GID_CMD_GR 333333
#define WM_RECOEVENT WM_USER+102
剩下來就是對cpp檔案的函數initSR()和RecoEvent()補充函數體
3）具體見下面代碼：
（1）void CSpeech::initSR()
{
HRESULT hr=S_OK;
hr=m_cpRecoEngine.CoCreateInstance(CLSID_SpInprocRecognizer);//建立識別引擎COM執行個體
if(SUCCEEDED(hr))
{
hr =m_cpRecoEngine->CreateRecoContext(&m_cpRecoCtxt );//建立識別上下文
}
else
MessageBox(hWnd,"error1","error",S_OK);
if(SUCCEEDED(hr))
{
hr = m_cpRecoCtxt->SetNotifyWindowMessage(hWnd, WM_RECOEVENT, 0, 0 );
}//訊息機制設定，使電腦時刻監聽語音訊息
else
MessageBox(hWnd,"error2","error",S_OK);
if (SUCCEEDED(hr))
{
ULONGLONG ullMyEvents = SPFEI(SPEI_RECOGNITION) | SPFEI(SPEI_HYPOTHESIS);
hr = m_cpRecoCtxt->SetInterest(ullMyEvents, ullMyEvents);
}
else
MessageBox(hWnd,"error3","error",S_OK);
//設定預設的音頻
CComPtr m_cpAudio;
hr=SpCreateDefaultObjectFromCategoryId(SPCAT_AUDIOIN,&m_cpAudio);//建立預設的音頻輸入對象
hr=m_cpRecoEngine->SetInput(m_cpAudio,TRUE);//設定識別引擎輸入源
hr=m_cpRecoCtxt->CreateGrammar(GID_CMD_GR,&m_cpCmdGrammar);//建立命令文法
b_Cmd_Grammar=TRUE;
if(FAILED(hr))
{
MessageBox(hWnd,"error 4","error",S_OK);
}
hr=m_cpCmdGrammar->LoadCmdFromResource(NULL,MAKEINTRESOURCEW(IDR_CMDCTRL),L"SRGRAMMAR",MAKELANGID(LANG_NEUTRAL,SUBLANG_NEUTRAL), SPLO_DYNAMIC);//載入命令文法檔案
if(FAILED(hr))
{
MessageBox(hWnd,"error5","error",S_OK);
}
b_initSR=TRUE;
}
（2）BOOL CSpeech::RecoEvent()
{
USES_CONVERSION;
CSpEvent event;
while(event.GetFrom(m_cpRecoCtxt)==S_OK)
{
switch(event.eEventId)
{
case SPEI_RECOGNITION:
{
static const WCHAR wszUnrecognized[]=L"";
CSpDynamicString dstrText;
if(FAILED(event.RecoResult()->GetText(SP_GETWHOLEPHRASE,SP_GETWHOLEPHRASE,TRUE,&dstrText,NULL)))
{
dstrText=wszUnrecognized;
}
dstrText.CopyToBSTR(&SRout);
Recstring.Empty();
Recstring=SRout;
if(b_Cmd_Grammar)
{
if(Recstring=="左")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"左轉",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->LEFT=1;
return TRUE ;
}
if(Recstring=="向下走")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"開始後退",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->BACK=1;
return TRUE ;
}
if(Recstring=="最小化")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"最小化",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
SendMessage(hWnd,WM_SYSCOMMAND, SC_MINIMIZE, MAKELPARAM(0, 0));
return TRUE;
}
if(Recstring=="右")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"開始右轉",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->RIGHT=1;
return TRUE ;
}
if(Recstring=="停下來")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"動作開始了",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->Move=0;
m_OpenGL->m_baiscobj->BACK=0;
m_OpenGL->m_baiscobj->LEFT=0;
m_OpenGL->m_baiscobj->RIGHT=0;
return TRUE ;
}
if(Recstring=="跑步")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"動作開始了",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->Move=1;
return TRUE ;
}
if(Recstring=="退出")
{
m_OpenGL->CleanUp(); // 結束處理
PostQuitMessage(0);
return TRUE;
}
}
}
}
}return TRUE;
}
要注意的是RecoEvent（）必須能處理人物、網路攝影機的漫遊，所以在人物、攝像機類的行為函數中添加了控制變數Move、BACK、LEFT、RIGHT;並附了初值1，當在行為函數中為1時行為函數體執行，所以也必須
#include "OpenGL.h"
#include "baiscobj.h"
其間我們藉助於指標變數，巧妙的使語音能控制行為，卻不影響動畫的重新整理，但不足的是由於opengl動畫md2模型的不能匯入成功，使踢球，跳木箱等功能函數沒有完成，所以只要行為函數出來，可通過上述同樣方法實現語音控制。
4）如何在winmain()函數中執行語音程式？
首先包含語音標頭檔〈sapi.h〉
接著（#define CSpeech speech）定義語音類對象
INT WINAPI WinMain(HINSTANCE hInst,HINSTANCE,LPSTR,INT )// WinMain程式入口
{
::CoInitializeEx(NULL,COINIT_APARTMENTTHREADED);//初始化COM
……
char cc[]="tml";
WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, (LPCTSTR)IDR_MENU1,
cc, NULL };
RegisterClassEx( &wc );
m_OpenGL=new OpenGL();//
hWnd = CreateWindowEx(NULL,cc,"智能精靈鍵盤(↑進↓退→右←左UP仰DOWM俯)",
dwStyle|WS_CLIPCHILDREN|WS_CLIPSIBLINGS,nX,nY,Width, Height,NULL,NULL,hInst,NULL); // 建立視窗
ShowWindow( hWnd, SW_SHOWDEFAULT ); // 顯示視窗
UpdateWindow( hWnd ); // 重新整理視窗
speech.b_Cmd_Grammar=FALSE;
speech.initSR();
GameLoop(); // 進入訊息迴圈
return 0;
}
通過speech.initSR(),執行語音的初始化，為了設定一個簡單的語音辨識開關，簡單的添加一個工作列，只有語音這一個菜單資源，然後利用訊息機制，在訊息處理函數裡Switch(message)裡添加：
case WM_COMMAND:
switch(LOWORD(wParam))
{
case IDM_SPEECH:speech.startcmd();
}
return 0;break;
即當單擊語音菜單時，則使語音功能完全啟用，下面是這個函數的實體：
void CSpeech::startcmd()
{
if(b_initSR)
{
HRESULT hr=m_cpCmdGrammar->SetRuleState(NULL,NULL,SPRS_ACTIVE);
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return ;
}
hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"文法已經啟用",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
}
}
5）在所有的工作完成之前，還必須先在項目工程下添加XML文法檔案，通過initSR（）中的LoadCmdFromResource（）函數載入；XML檔案可通過以記事本形式開啟編輯。具體如下：
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下
左
右
向上走
向下走
跳
停下來
跑步
識別
語音
還原
檔案
踢球
