//----------------------------------------------------------------------------- // File: MusicTool.cpp // // Desc: Plays a primary segment using DirectMusic // // Copyright (c) 2000-2001 Microsoft Corporation. All rights reserved. //----------------------------------------------------------------------------- #define STRICT #include #include #include #include #include #include #include #include #include #include "resource.h" #include "DMUtil.h" #include "DXUtil.h" #include "EchoTool.h" //----------------------------------------------------------------------------- // Function-prototypes //----------------------------------------------------------------------------- INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam ); HRESULT OnInitDialog( HWND hDlg ); HRESULT ProcessDirectMusicMessages( HWND hDlg ); VOID OnOpenSoundFile( HWND hDlg ); HRESULT LoadSegmentFile( HWND hDlg, TCHAR* strFileName ); HRESULT OnPlaySegment( HWND hDlg ); VOID EnablePlayUI( HWND hDlg, BOOL bEnable ); HRESULT OnChangeTool( HWND hDlg ); //----------------------------------------------------------------------------- // Defines, constants, and global variables //----------------------------------------------------------------------------- HINSTANCE g_hInst = NULL; CMusicManager* g_pMusicManager = NULL; CMusicSegment* g_pMusicSegment = NULL; CEchoTool* g_pEchoTool = NULL; IDirectMusicTool* g_pCurrentTool = NULL; IDirectMusicGraph* g_pGraph = NULL; HANDLE g_hDMusicMessageEvent = NULL; //----------------------------------------------------------------------------- // Name: WinMain() // Desc: Entry point for the application. Since we use a simple dialog for // user interaction we don't need to pump messages. //----------------------------------------------------------------------------- INT APIENTRY WinMain( HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR pCmdLine, INT nCmdShow ) { HWND hDlg = NULL; BOOL bDone = FALSE; int nExitCode; HRESULT hr; DWORD dwResult; MSG msg; g_hInst = hInst; // Display the main dialog box. hDlg = CreateDialog( hInst, MAKEINTRESOURCE(IDD_MAIN), NULL, MainDlgProc ); while( !bDone ) { dwResult = MsgWaitForMultipleObjects( 1, &g_hDMusicMessageEvent, FALSE, INFINITE, QS_ALLEVENTS ); switch( dwResult ) { case WAIT_OBJECT_0 + 0: // g_hDPMessageEvent is signaled, so there are // DirectPlay messages available if( FAILED( hr = ProcessDirectMusicMessages( hDlg ) ) ) { DXTRACE_ERR( TEXT("ProcessDirectMusicMessages"), hr ); return FALSE; } break; case WAIT_OBJECT_0 + 1: // Windows messages are available while( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) ) { if( !IsDialogMessage( hDlg, &msg ) ) { TranslateMessage( &msg ); DispatchMessage( &msg ); } if( msg.message == WM_QUIT ) { nExitCode = (int)msg.wParam; bDone = TRUE; DestroyWindow( hDlg ); } } break; } } return nExitCode; } //----------------------------------------------------------------------------- // Name: MainDlgProc() // Desc: Handles dialog messages //----------------------------------------------------------------------------- INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam ) { HRESULT hr; switch( msg ) { case WM_INITDIALOG: if( FAILED( hr = OnInitDialog( hDlg ) ) ) { DXTRACE_ERR( TEXT("OnInitDialog"), hr ); MessageBox( hDlg, "Error initializing DirectMusic. Sample will now exit.", "DirectMusic Sample", MB_OK | MB_ICONERROR ); PostQuitMessage( IDABORT ); return FALSE; } break; case WM_COMMAND: switch( LOWORD(wParam) ) { case IDC_SOUNDFILE: OnOpenSoundFile( hDlg ); break; case IDCANCEL: PostQuitMessage( IDCANCEL ); break; case IDC_PLAY: if( FAILED( hr = OnPlaySegment( hDlg ) ) ) { DXTRACE_ERR( TEXT("OnPlaySegment"), hr ); MessageBox( hDlg, "Error playing DirectMusic segment. " "Sample will now exit.", "DirectMusic Sample", MB_OK | MB_ICONERROR ); PostQuitMessage( IDABORT ); } break; case IDC_STOP: g_pMusicSegment->Stop( DMUS_SEGF_BEAT ); EnablePlayUI( hDlg, TRUE ); break; case IDC_TOOL_COMBO: OnChangeTool( hDlg ); break; default: return FALSE; // Didn't handle message } break; case WM_DESTROY: // Cleanup everything SAFE_DELETE( g_pMusicSegment ); SAFE_DELETE( g_pMusicManager ); SAFE_DELETE( g_pEchoTool ); CloseHandle( g_hDMusicMessageEvent ); break; default: return FALSE; // Didn't handle message } return TRUE; // Handled message } //----------------------------------------------------------------------------- // Name: OnInitDialog() // Desc: Initializes the dialogs (sets up UI controls, etc.) //----------------------------------------------------------------------------- HRESULT OnInitDialog( HWND hDlg ) { HRESULT hr; LONG lIndex; // Set the icon for this dialog. HICON hIcon = LoadIcon( g_hInst, MAKEINTRESOURCE( IDR_MAINFRAME ) ); SendMessage( hDlg, WM_SETICON, ICON_BIG, (LPARAM) hIcon ); // Set big icon SendMessage( hDlg, WM_SETICON, ICON_SMALL, (LPARAM) hIcon ); // Set small icon g_hDMusicMessageEvent = CreateEvent( NULL, FALSE, FALSE, NULL ); g_pMusicManager = new CMusicManager(); // Init DirectMusic with a default audio path hr = g_pMusicManager->Initialize( hDlg ); IDirectMusicPerformance8* pPerformance = g_pMusicManager->GetPerformance(); IDirectMusicAudioPath8* pDefaultAudioPath = g_pMusicManager->GetDefaultAudioPath(); // Create a DirectMusicGraph, and tell the preformance about it hr = pDefaultAudioPath->GetObjectInPath( 0, DMUS_PATH_PERFORMANCE_GRAPH, 0, GUID_NULL, 0, IID_IDirectMusicGraph, (LPVOID*) &g_pGraph ); if( FAILED( hr ) ) return DXTRACE_ERR( TEXT("GetObjectInPath"), hr ); // Register segment notification GUID guid = GUID_NOTIFICATION_SEGMENT; if( FAILED( hr = pPerformance->AddNotificationType( guid ) ) ) return DXTRACE_ERR( TEXT("AddNotificationType"), hr ); if( FAILED( hr = pPerformance->SetNotificationHandle( g_hDMusicMessageEvent, 0 ) ) ) return DXTRACE_ERR( TEXT("SetNotificationHandle"), hr ); g_pEchoTool = new CEchoTool(); // Init the UI HWND hToolCombo = GetDlgItem( hDlg, IDC_TOOL_COMBO ); lIndex = (LONG)SendMessage( hToolCombo, CB_ADDSTRING, 0, (LPARAM) TEXT("None") ); SendMessage( hToolCombo, CB_SETITEMDATA, lIndex, (LPARAM) NULL ); lIndex = (LONG)SendMessage( hToolCombo, CB_ADDSTRING, 0, (LPARAM) TEXT("Echo Tool") ); SendMessage( hToolCombo, CB_SETITEMDATA, lIndex, (LPARAM) (IDirectMusicTool*) g_pEchoTool ); SendMessage( hToolCombo, CB_SETCURSEL, 0, 0 ); // Load a default music segment TCHAR strFileName[MAX_PATH]; strcpy( strFileName, DXUtil_GetDXSDKMediaPath() ); strcat( strFileName, "sample.sgt" ); if( S_FALSE == LoadSegmentFile( hDlg, strFileName ) ) { // Set the UI controls SetDlgItemText( hDlg, IDC_FILENAME, TEXT("No file loaded.") ); } return S_OK; } //----------------------------------------------------------------------------- // Name: OnOpenSoundFile() // Desc: Called when the user requests to open a sound file //----------------------------------------------------------------------------- VOID OnOpenSoundFile( HWND hDlg ) { static TCHAR strFileName[MAX_PATH] = TEXT(""); static TCHAR strPath[MAX_PATH] = TEXT(""); // Get the default media path (something like C:\MSSDK\SAMPLES\DMUSIC\MEDIA) if( '\0' == strPath[0] ) { const TCHAR* szDir = DXUtil_GetDXSDKMediaPath(); strcpy( strPath, szDir ); } // Setup the OPENFILENAME structure OPENFILENAME ofn = { sizeof(OPENFILENAME), hDlg, NULL, TEXT("DirectMusic Content Files\0*.sgt;*.mid;*.rmi\0All Files\0*.*\0\0"), NULL, 0, 1, strFileName, MAX_PATH, NULL, 0, strPath, TEXT("Open Content File"), OFN_FILEMUSTEXIST|OFN_HIDEREADONLY, 0, 0, TEXT(".sgt"), 0, NULL, NULL }; if( g_pMusicSegment ) g_pMusicSegment->Stop( 0 ); // Update the UI controls to show the sound as loading a file EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), FALSE); EnableWindow( GetDlgItem( hDlg, IDC_STOP ), FALSE); SetDlgItemText( hDlg, IDC_FILENAME, TEXT("Loading file...") ); // Display the OpenFileName dialog. Then, try to load the specified file if( TRUE != GetOpenFileName( &ofn ) ) { SetDlgItemText( hDlg, IDC_FILENAME, TEXT("Load aborted.") ); return; } if( S_FALSE == LoadSegmentFile( hDlg, strFileName ) ) { // Not a critical failure, so just update the status SetDlgItemText( hDlg, IDC_FILENAME, TEXT("Could not create segment from file.") ); } // Remember the path for next time strcpy( strPath, strFileName ); char* strLastSlash = strrchr( strPath, '\\' ); strLastSlash[0] = '\0'; } //----------------------------------------------------------------------------- // Name: LoadSegmentFile() // Desc: //----------------------------------------------------------------------------- HRESULT LoadSegmentFile( HWND hDlg, TCHAR* strFileName ) { HRESULT hr; SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") ); // Free any previous segment, and make a new one SAFE_DELETE( g_pMusicSegment ); // Have the loader collect any garbage now that the old // script has been released g_pMusicManager->CollectGarbage(); // Set the media path based on the file name (something like C:\MEDIA) // to be used as the search directory for finding DirectMusic content // related to this file. TCHAR strMediaPath[MAX_PATH]; _tcscpy( strMediaPath, strFileName ); TCHAR* strLastSlash = _tcsrchr(strMediaPath, TEXT('\\')); *strLastSlash = 0; if( FAILED( hr = g_pMusicManager->SetSearchDirectory( strMediaPath ) ) ) return DXTRACE_ERR( TEXT("SetSearchDirectory"), hr ); // For DirectMusic must know if the file is a standard MIDI file or not // in order to load the correct instruments. BOOL bMidiFile = FALSE; if( strstr( strFileName, ".mid" ) != NULL || strstr( strFileName, ".rmi" ) != NULL ) { bMidiFile = TRUE; } // Load the file into a DirectMusic segment if( FAILED( g_pMusicManager->CreateSegmentFromFile( &g_pMusicSegment, strFileName, TRUE, bMidiFile ) ) ) { // Not a critical failure, so just update the status return S_FALSE; } // Update the UI controls to show the segment is loaded SetDlgItemText( hDlg, IDC_FILENAME, strFileName ); EnablePlayUI( hDlg, TRUE ); return S_OK; } //----------------------------------------------------------------------------- // Name: ProcessDirectMusicMessages() // Desc: Handle DirectMusic notification messages //----------------------------------------------------------------------------- HRESULT ProcessDirectMusicMessages( HWND hDlg ) { HRESULT hr; IDirectMusicPerformance8* pPerf = NULL; DMUS_NOTIFICATION_PMSG* pPMsg; if( NULL == g_pMusicManager ) return S_OK; pPerf = g_pMusicManager->GetPerformance(); // Get waiting notification message from the performance while( S_OK == pPerf->GetNotificationPMsg( &pPMsg ) ) { switch( pPMsg->dwNotificationOption ) { case DMUS_NOTIFICATION_SEGEND: if( pPMsg->punkUser ) { IDirectMusicSegmentState8* pSegmentState = NULL; IDirectMusicSegment* pNotifySegment = NULL; IDirectMusicSegment8* pNotifySegment8 = NULL; IDirectMusicSegment8* pPrimarySegment8 = NULL; // The pPMsg->punkUser contains a IDirectMusicSegmentState8, // which we can query for the segment that the SegmentState refers to. if( FAILED( hr = pPMsg->punkUser->QueryInterface( IID_IDirectMusicSegmentState8, (VOID**) &pSegmentState ) ) ) return DXTRACE_ERR( TEXT("QueryInterface"), hr ); if( SUCCEEDED( hr = pSegmentState->GetSegment( &pNotifySegment ) ) ) { if( FAILED( hr = pNotifySegment->QueryInterface( IID_IDirectMusicSegment8, (VOID**) &pNotifySegment8 ) ) ) return DXTRACE_ERR( TEXT("QueryInterface"), hr ); // Get the IDirectMusicSegment for the primary segment pPrimarySegment8 = g_pMusicSegment->GetSegment(); // Figure out which segment this is if( pNotifySegment8 == pPrimarySegment8 ) { // Update the UI controls to show the sound as stopped EnablePlayUI( hDlg, TRUE ); } } // Cleanup SAFE_RELEASE( pSegmentState ); SAFE_RELEASE( pNotifySegment ); SAFE_RELEASE( pNotifySegment8 ); } break; } pPerf->FreePMsg( (DMUS_PMSG*)pPMsg ); } return S_OK; } //----------------------------------------------------------------------------- // Name: OnPlaySegment() // Desc: //----------------------------------------------------------------------------- HRESULT OnPlaySegment( HWND hDlg ) { HRESULT hr; HWND hLoopButton = GetDlgItem( hDlg, IDC_LOOP_CHECK ); BOOL bLooped = ( SendMessage( hLoopButton, BM_GETSTATE, 0, 0 ) == BST_CHECKED ); if( bLooped ) { // Set the segment to repeat many times if( FAILED( hr = g_pMusicSegment->SetRepeats( DMUS_SEG_REPEAT_INFINITE ) ) ) return DXTRACE_ERR( TEXT("SetRepeats"), hr ); } else { // Set the segment to not repeat if( FAILED( hr = g_pMusicSegment->SetRepeats( 0 ) ) ) return DXTRACE_ERR( TEXT("SetRepeats"), hr ); } // Play the segment and wait. The DMUS_SEGF_BEAT indicates to play on the // next beat if there is a segment currently playing. if( FAILED( hr = g_pMusicSegment->Play( DMUS_SEGF_BEAT ) ) ) return DXTRACE_ERR( TEXT("Play"), hr ); EnablePlayUI( hDlg, FALSE ); return S_OK; } //----------------------------------------------------------------------------- // Name: EnablePlayUI( hDlg,) // Desc: Enables or disables the Play UI controls //----------------------------------------------------------------------------- VOID EnablePlayUI( HWND hDlg, BOOL bEnable ) { if( bEnable ) { EnableWindow( GetDlgItem( hDlg, IDC_LOOP_CHECK ), TRUE ); EnableWindow( GetDlgItem( hDlg, IDC_STOP ), FALSE ); EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), TRUE ); SetFocus( GetDlgItem( hDlg, IDC_PLAY ) ); } else { EnableWindow( GetDlgItem( hDlg, IDC_LOOP_CHECK ), FALSE ); EnableWindow( GetDlgItem( hDlg, IDC_STOP ), TRUE ); SetFocus( GetDlgItem( hDlg, IDC_STOP ) ); EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), FALSE ); } } //----------------------------------------------------------------------------- // Name: OnChangeTool() // Desc: //----------------------------------------------------------------------------- HRESULT OnChangeTool( HWND hDlg ) { HRESULT hr; IDirectMusicTool* pSelectedTool; LONG lCurSelection; lCurSelection = (LONG)SendDlgItemMessage( hDlg, IDC_TOOL_COMBO, CB_GETCURSEL, 0, 0 ); pSelectedTool = (IDirectMusicTool*) SendDlgItemMessage( hDlg, IDC_TOOL_COMBO, CB_GETITEMDATA, lCurSelection, 0 ); if( pSelectedTool != g_pCurrentTool ) { // Remove the current tool from the graph if( g_pCurrentTool != NULL ) { if( FAILED( hr = g_pGraph->RemoveTool( g_pCurrentTool ) ) ) return DXTRACE_ERR( TEXT("RemoveTool"), hr ); } // Add the tool to the graph on all PChannels // and at the beginning of the graph. if( pSelectedTool != NULL ) { if( FAILED( hr = g_pGraph->InsertTool( pSelectedTool, NULL, 0, 0 ) ) ) return DXTRACE_ERR( TEXT("InsertTool"), hr ); } g_pCurrentTool = pSelectedTool; } return S_OK; }