利用微软API的声音识别小程序

/**************************************************************************** * SimpleDict.cpp * A very simple dictation app. The user speaks, and whatever the * engine recognizes appears in an edit box. * * Copyright (c) Microsoft Corporation. All rights reserved. *****************************************************************************/ #include "stdafx.h" #include "resource.h" #include <sphelper.h> #include "simpledict.h" // Foward declarations of functions included in this code module: LRESULT CALLBACK SimpleDictDlgProc( HWND, UINT, WPARAM, LPARAM ); // Entry point int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { #ifdef _WIN32_WCE if (SUCCEEDED(::CoInitializeEx(NULL,COINIT_MULTITHREADED))) #else if (SUCCEEDED(::CoInitialize(NULL))) #endif { // NOTE: Extra scope provided so DlgInfo is destroyed before CoUninitialize is called. { CSimpleDict SimpleDictClass( hInstance ); ::DialogBoxParam( hInstance, MAKEINTRESOURCE( IDD_SIMPLEDICTDLG ), NULL, (DLGPROC) CSimpleDict::SimpleDictDlgProc, (LPARAM) &SimpleDictClass ); } ::CoUninitialize(); } return 0; } /********************************************************************************************* * CSimpleDict::SimpleDictDlgProc() * Main message handler for SimpleDict dialog box. * At initialization time, LPARAM is the CSimpleDict object, to which the * window long is set. **********************************************************************************************/ LRESULT CALLBACK CSimpleDict::SimpleDictDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { CSimpleDict *pThis = (CSimpleDict *) ::GetWindowLong( hDlg, GWL_USERDATA ); switch( message ) { case WM_INITDIALOG: ::SetWindowLong( hDlg, GWL_USERDATA, lParam ); pThis = (CSimpleDict *) lParam; if ( !pThis->InitDialog( hDlg ) ) { ::DestroyWindow( hDlg ); } break; case WM_RECOEVENT: // All recognition events send this message, because that is how we // specified we should be notified pThis->RecoEvent(); return TRUE; break; case WM_COMMAND: if ( LOWORD( wParam ) == IDC_BUTTON_EXIT ) { ::EndDialog( hDlg, TRUE ); } break; case WM_CLOSE: ::EndDialog( hDlg, TRUE ); break; case WM_DESTROY: // Release the recognition context and the dictation grammar pThis->m_cpRecoCtxt.Release(); pThis->m_cpDictationGrammar.Release(); break; default: return FALSE; break; } return TRUE; } /********************************************************************************************* * CSimpleDict::InitDialog() * Creates the recognition context and activates the grammar. * Returns TRUE iff successful. **********************************************************************************************/ bool CSimpleDict::InitDialog( HWND hDlg ) { m_hDlg = hDlg; HRESULT hr = S_OK; CComPtr<ISpRecognizer> cpRecoEngine; hr = cpRecoEngine.CoCreateInstance(CLSID_SpInprocRecognizer); if( SUCCEEDED( hr ) ) { hr = cpRecoEngine->CreateRecoContext( &m_cpRecoCtxt ); } // Set recognition notification for dictation if (SUCCEEDED(hr)) { hr = m_cpRecoCtxt->SetNotifyWindowMessage( hDlg, WM_RECOEVENT, 0, 0 ); } if (SUCCEEDED(hr)) { // This specifies which of the recognition events are going to trigger notifications. // Here, all we are interested in is the beginning and ends of sounds, as well as // when the engine has recognized something const ULONGLONG ullInterest = SPFEI(SPEI_RECOGNITION); hr = m_cpRecoCtxt->SetInterest(ullInterest, ullInterest); } // create default audio object CComPtr<ISpAudio> cpAudio; hr = SpCreateDefaultObjectFromCategoryId(SPCAT_AUDIOIN, &cpAudio); CComPtr<ISpStream> cpInputStream; // Create basic SAPI stream object // NOTE: The helper SpBindToFile can be used to perform the following operations hr = cpInputStream.CoCreateInstance(CLSID_SpStream); // Check hr CSpStreamFormat sInputFormat; // generate WaveFormatEx structure, assuming the wav format is 22kHz, 16-bit, Stereo hr = sInputFormat.AssignFormat(SPSF_44kHz16BitStereo); // Check hr // setup stream object with wav file MY_WAVE_AUDIO_FILENAME // for read-only access, since it will only be access by the SR engine const char *strFileName = "d:\\input1188361284234.wav"; int nLen = strlen(strFileName)+1; int nwLen = MultiByteToWideChar(CP_ACP,0,strFileName,nLen,NULL,0); WCHAR lpszFile[256]; MultiByteToWideChar(CP_ACP, 0, strFileName, nLen, lpszFile, nwLen); hr = cpInputStream->BindToFile(lpszFile, SPFM_OPEN_READONLY, &sInputFormat.FormatId(), sInputFormat.WaveFormatExPtr(), SPFEI_ALL_EVENTS); // set the input for the engine hr = cpRecoEngine->SetInput(cpInputStream, TRUE); hr = cpRecoEngine->SetRecoState( SPRST_ACTIVE ); if (SUCCEEDED(hr)) { // Specifies that the grammar we want is a dictation grammar. // Initializes the grammar (m_cpDictationGrammar) hr = m_cpRecoCtxt->CreateGrammar( GID_DICTATION, &m_cpDictationGrammar ); } if (SUCCEEDED(hr)) { hr = m_cpDictationGrammar->LoadDictation(NULL, SPLO_STATIC); } if (SUCCEEDED(hr)) { hr = m_cpDictationGrammar->SetDictationState( SPRS_ACTIVE ); } if (FAILED(hr)) { m_cpDictationGrammar.Release(); } return (hr == S_OK); } /***************************************************************************************** * CSimpleDict::RecoEvent() * Called whenever the dialog process is notified of a recognition event. * Inserts whatever is recognized into the edit box. ******************************************************************************************/ void CSimpleDict::RecoEvent() { USES_CONVERSION; CSpEvent event; // Process all of the recognition events while (event.GetFrom(m_cpRecoCtxt) == S_OK) { switch (event.eEventId) { case SPEI_SOUND_START: m_bInSound = TRUE; break; case SPEI_SOUND_END: if (m_bInSound) { m_bInSound = FALSE; if (!m_bGotReco) { // The sound has started and ended, // but the engine has not succeeded in recognizing anything const TCHAR szNoise[] = _T("<noise>"); ::SendDlgItemMessage( m_hDlg, IDC_EDIT_DICT, EM_REPLACESEL, TRUE, (LPARAM) szNoise ); } m_bGotReco = FALSE; } break; case SPEI_RECOGNITION: // There may be multiple recognition results, so get all of them { m_bGotReco = TRUE; static const WCHAR wszUnrecognized[] = L"<Unrecognized>"; CSpDynamicString dstrText; if (FAILED(event.RecoResult