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- //----------------------------------------------------------------------------
- // File: Play3DSound.cpp
- //
- // Desc: Main application file for the Play3DSound sample. This sample shows how
- // to load a wave file and play it using a 3D DirectSound buffer.
- //
- // Copyright (c) 1999-2001 Microsoft Corp. All rights reserved.
- //-----------------------------------------------------------------------------
- #define STRICT
- #include <windows.h>
- #include <basetsd.h>
- #include <commctrl.h>
- #include <commdlg.h>
- #include <mmreg.h>
- #include <mmsystem.h>
- #include <dxerr8.h>
- #include <dsound.h>
- #include <math.h>
- #include <stdio.h>
- #include "resource.h"
- #include "DSUtil.h"
- #include "DXUtil.h"
-
-
-
- //-----------------------------------------------------------------------------
- // Function-prototypes
- //-----------------------------------------------------------------------------
- INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam );
- VOID OnInitDialog( HWND hDlg );
- HRESULT InitDirectSound( HWND hDlg );
- HRESULT FreeDirectSound();
- VOID SetSlidersPos( HWND hDlg, FLOAT fDopplerValue, FLOAT fRolloffValue, FLOAT fMinDistValue, FLOAT fMaxDistValue );
- VOID OnOpenSoundFile( HWND hDlg );
- VOID LoadWaveFileIntoBuffer( HWND hDlg, TCHAR* strFileName );
- INT_PTR CALLBACK AlgorithmDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam );
- HRESULT OnPlaySound( HWND hDlg );
- VOID OnSliderChanged( HWND hDlg );
- VOID Set3DParameters( FLOAT fDopplerFactor, FLOAT fRolloffFactor, FLOAT fMinDistance, FLOAT fMaxDistance );
- VOID EnablePlayUI( HWND hDlg, BOOL bEnable );
- VOID OnMovementTimer( HWND hDlg );
- VOID UpdateGrid( HWND hDlg, FLOAT x, FLOAT y );
- VOID SetObjectProperties( D3DVECTOR* pvPosition, D3DVECTOR* pvVelocity );
- FLOAT ConvertLinearSliderPosToLogScale( LONG lSliderPos );
- LONG ConvertLogScaleToLinearSliderPosTo( FLOAT fValue );
-
-
-
-
- //-----------------------------------------------------------------------------
- // Defines, constants, and global variables
- //-----------------------------------------------------------------------------
- #define SAFE_DELETE(p) { if(p) { delete (p); (p)=NULL; } }
- #define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p)=NULL; } }
-
- #define ORBIT_MAX_RADIUS 5.0f
- #define IDT_MOVEMENT_TIMER 1
-
- CSoundManager* g_pSoundManager = NULL;
- CSound* g_pSound = NULL;
- LPDIRECTSOUND3DBUFFER g_pDS3DBuffer = NULL; // 3D sound buffer
- LPDIRECTSOUND3DLISTENER g_pDSListener = NULL; // 3D listener object
- DS3DBUFFER g_dsBufferParams; // 3D buffer properties
- DS3DLISTENER g_dsListenerParams; // Listener properties
- BOOL g_bDeferSettings = FALSE;
- BOOL g_bAllowMovementTimer = TRUE;
-
-
-
-
- //-----------------------------------------------------------------------------
- // 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 )
- {
- // Init the common control dll
- InitCommonControls();
-
- // Display the main dialog box.
- DialogBox( hInst, MAKEINTRESOURCE(IDD_MAIN), NULL, MainDlgProc );
-
- return TRUE;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // 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:
- OnInitDialog( hDlg );
- break;
-
- case WM_COMMAND:
- switch( LOWORD(wParam) )
- {
- case IDC_SOUNDFILE:
- OnOpenSoundFile( hDlg );
- break;
-
- case IDCANCEL:
- EndDialog( hDlg, IDCANCEL );
- break;
-
- case IDC_PLAY:
- if( FAILED( hr = OnPlaySound( hDlg ) ) )
- {
- DXTRACE_ERR( TEXT("OnPlaySound"), hr );
- MessageBox( hDlg, "Error playing DirectSound buffer."
- "Sample will now exit.", "DirectSound Sample",
- MB_OK | MB_ICONERROR );
- EndDialog( hDlg, IDABORT );
- }
- break;
-
- case IDC_STOP:
- if( g_pSound )
- {
- g_pSound->Stop();
- g_pSound->Reset();
- }
-
- // Update the UI controls to show the sound as stopped
- EnablePlayUI( hDlg, TRUE );
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Sound stopped.") );
- break;
-
- case IDC_DEFER:
- g_bDeferSettings = !g_bDeferSettings;
- OnSliderChanged( hDlg );
- break;
-
- case IDC_APPLY:
- // Call the IDirectSound3DListener::CommitDeferredSettings
- // method to execute all of the deferred commands at once.
- // This is many times more efficent than recomputing everything
- // for every call.
- if( g_pDSListener )
- g_pDSListener->CommitDeferredSettings();
- break;
-
- default:
- return FALSE; // Didn't handle message
- }
- break;
-
- case WM_TIMER:
- if( wParam == IDT_MOVEMENT_TIMER )
- OnMovementTimer( hDlg );
- break;
-
- case WM_NOTIFY:
- OnSliderChanged( hDlg );
- break;
-
- case WM_DESTROY:
- // Cleanup everything
- KillTimer( hDlg, 1 );
- SAFE_RELEASE( g_pDSListener );
- SAFE_RELEASE( g_pDS3DBuffer );
-
- SAFE_DELETE( g_pSound );
- SAFE_DELETE( g_pSoundManager );
- break;
-
- default:
- return FALSE; // Didn't handle message
- }
-
- return TRUE; // Handled message
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnInitDialog()
- // Desc: Initializes the dialogs (sets up UI controls, etc.)
- //-----------------------------------------------------------------------------
- VOID OnInitDialog( HWND hDlg )
- {
- HRESULT hr;
-
- // Load the icon
- #ifdef _WIN64
- HINSTANCE hInst = (HINSTANCE) GetWindowLongPtr( hDlg, GWLP_HINSTANCE );
- #else
- HINSTANCE hInst = (HINSTANCE) GetWindowLong( hDlg, GWL_HINSTANCE );
- #endif
- HICON hIcon = LoadIcon( hInst, MAKEINTRESOURCE( IDR_MAINFRAME ) );
-
- // Create a static IDirectSound in the CSound class.
- // Set coop level to DSSCL_PRIORITY, and set primary buffer
- // format to stereo, 22kHz and 16-bit output.
- g_pSoundManager = new CSoundManager();
-
- hr = g_pSoundManager->Initialize( hDlg, DSSCL_PRIORITY, 2, 22050, 16 );
-
- // Get the 3D listener, so we can control its params
- hr |= g_pSoundManager->Get3DListenerInterface( &g_pDSListener );
-
- if( FAILED(hr) )
- {
- DXTRACE_ERR( TEXT("Get3DListenerInterface"), hr );
- MessageBox( hDlg, "Error initializing DirectSound. Sample will now exit.",
- "DirectSound Sample", MB_OK | MB_ICONERROR );
- EndDialog( hDlg, IDABORT );
- return;
- }
-
- // Get listener parameters
- g_dsListenerParams.dwSize = sizeof(DS3DLISTENER);
- g_pDSListener->GetAllParameters( &g_dsListenerParams );
-
- // Set the icon for this dialog.
- PostMessage( hDlg, WM_SETICON, ICON_BIG, (LPARAM) hIcon ); // Set big icon
- PostMessage( hDlg, WM_SETICON, ICON_SMALL, (LPARAM) hIcon ); // Set small icon
-
- // Create a timer to periodically move the 3D object around
- SetTimer( hDlg, IDT_MOVEMENT_TIMER, 0, NULL );
-
- // Set the UI controls
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("No file loaded.") );
-
- // Get handles to dialog items
- HWND hDopplerSlider = GetDlgItem( hDlg, IDC_DOPPLER_SLIDER );
- HWND hRolloffSlider = GetDlgItem( hDlg, IDC_ROLLOFF_SLIDER );
- HWND hMinDistSlider = GetDlgItem( hDlg, IDC_MINDISTANCE_SLIDER );
- HWND hMaxDistSlider = GetDlgItem( hDlg, IDC_MAXDISTANCE_SLIDER );
- HWND hVertSlider = GetDlgItem( hDlg, IDC_VERTICAL_SLIDER );
- HWND hHorzSlider = GetDlgItem( hDlg, IDC_HORIZONTAL_SLIDER );
-
- // Set the range and position of the sliders
- PostMessage( hDopplerSlider, TBM_SETRANGEMAX, TRUE, 40L );
- PostMessage( hDopplerSlider, TBM_SETRANGEMIN, TRUE, 0L );
-
- PostMessage( hRolloffSlider, TBM_SETRANGEMAX, TRUE, 40L );
- PostMessage( hRolloffSlider, TBM_SETRANGEMIN, TRUE, 0L );
-
- PostMessage( hMinDistSlider, TBM_SETRANGEMAX, TRUE, 40L );
- PostMessage( hMinDistSlider, TBM_SETRANGEMIN, TRUE, 1L );
-
- PostMessage( hMaxDistSlider, TBM_SETRANGEMAX, TRUE, 40L );
- PostMessage( hMaxDistSlider, TBM_SETRANGEMIN, TRUE, 1L );
-
- PostMessage( hVertSlider, TBM_SETRANGEMAX, TRUE, 100L );
- PostMessage( hVertSlider, TBM_SETRANGEMIN, TRUE, -100L );
- PostMessage( hVertSlider, TBM_SETPOS, TRUE, 100L );
-
- PostMessage( hHorzSlider, TBM_SETRANGEMAX, TRUE, 100L );
- PostMessage( hHorzSlider, TBM_SETRANGEMIN, TRUE, -100L );
- PostMessage( hHorzSlider, TBM_SETPOS, TRUE, 100L );
-
- // Set the position of the sliders
- SetSlidersPos( hDlg, 0.0f, 0.0f, ORBIT_MAX_RADIUS, ORBIT_MAX_RADIUS*2.0f );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: SetSlidersPos()
- // Desc: Sets the slider positions
- //-----------------------------------------------------------------------------
- VOID SetSlidersPos( HWND hDlg, FLOAT fDopplerValue, FLOAT fRolloffValue,
- FLOAT fMinDistValue, FLOAT fMaxDistValue )
- {
- HWND hDopplerSlider = GetDlgItem( hDlg, IDC_DOPPLER_SLIDER );
- HWND hRolloffSlider = GetDlgItem( hDlg, IDC_ROLLOFF_SLIDER );
- HWND hMinDistSlider = GetDlgItem( hDlg, IDC_MINDISTANCE_SLIDER );
- HWND hMaxDistSlider = GetDlgItem( hDlg, IDC_MAXDISTANCE_SLIDER );
-
- LONG lDopplerSlider = ConvertLogScaleToLinearSliderPosTo( fDopplerValue );
- LONG lRolloffSlider = ConvertLogScaleToLinearSliderPosTo( fRolloffValue );
- LONG lMinDistSlider = ConvertLogScaleToLinearSliderPosTo( fMinDistValue );
- LONG lMaxDistSlider = ConvertLogScaleToLinearSliderPosTo( fMaxDistValue );
-
- PostMessage( hDopplerSlider, TBM_SETPOS, TRUE, lDopplerSlider );
- PostMessage( hRolloffSlider, TBM_SETPOS, TRUE, lRolloffSlider );
- PostMessage( hMinDistSlider, TBM_SETPOS, TRUE, lMinDistSlider );
- PostMessage( hMaxDistSlider, TBM_SETPOS, TRUE, lMaxDistSlider );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnOpenSoundFile()
- // Desc: Called when the user requests to open a sound file
- //-----------------------------------------------------------------------------
- VOID OnOpenSoundFile( HWND hDlg )
- {
- GUID guid3DAlgorithm = GUID_NULL;
- int nResult;
- HRESULT hr;
-
- static TCHAR strFileName[MAX_PATH] = TEXT("");
- static TCHAR strPath[MAX_PATH] = TEXT("");
-
- // Setup the OPENFILENAME structure
- OPENFILENAME ofn = { sizeof(OPENFILENAME), hDlg, NULL,
- TEXT("Wave Files\0*.wav\0All Files\0*.*\0\0"), NULL,
- 0, 1, strFileName, MAX_PATH, NULL, 0, strPath,
- TEXT("Open Sound File"),
- OFN_FILEMUSTEXIST|OFN_HIDEREADONLY, 0, 0,
- TEXT(".wav"), 0, NULL, NULL };
-
- // Get the default media path (something like C:\WINDOWS\MEDIA)
- if( '\0' == strPath[0] )
- {
- GetWindowsDirectory( strPath, MAX_PATH );
- if( strcmp( &strPath[strlen(strPath)], TEXT("\\") ) )
- strcat( strPath, TEXT("\\") );
- strcat( strPath, TEXT("MEDIA") );
- }
-
- if( g_pSound )
- {
- g_pSound->Stop();
- g_pSound->Reset();
- }
-
- // 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_STATUS, TEXT("Loading file...") );
-
- // Stop the timer while dialogs are displayed
- g_bAllowMovementTimer = FALSE;
-
- // Display the OpenFileName dialog. Then, try to load the specified file
- if( TRUE != GetOpenFileName( &ofn ) )
- {
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Load aborted.") );
- g_bAllowMovementTimer = TRUE;
- return;
- }
-
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
-
- // Free any previous sound, and make a new one
- SAFE_DELETE( g_pSound );
-
- CWaveFile waveFile;
- waveFile.Open( strFileName, NULL, WAVEFILE_READ );
- WAVEFORMATEX* pwfx = waveFile.GetFormat();
- if( pwfx == NULL )
- {
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Invalid wave file format.") );
- return;
- }
-
- if( pwfx->nChannels > 1 )
- {
- // Too many channels in wave. Sound must be mono when using DSBCAPS_CTRL3D
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Wave file must be mono for 3D control.") );
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
- return;
- }
-
- if( pwfx->wFormatTag != WAVE_FORMAT_PCM )
- {
- // Sound must be PCM when using DSBCAPS_CTRL3D
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Wave file must be PCM for 3D control.") );
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
- return;
- }
-
- // Get the software DirectSound3D emulation algorithm to use
- // Ask the user for this sample, so display the algorithm dialog box.
- nResult = (int)DialogBox( NULL, MAKEINTRESOURCE(IDD_3D_ALGORITHM),
- NULL, AlgorithmDlgProc );
- switch( nResult )
- {
- case -1: // User canceled dialog box
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Load aborted.") );
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
- return;
-
- case 0: // User selected DS3DALG_NO_VIRTUALIZATION
- guid3DAlgorithm = DS3DALG_NO_VIRTUALIZATION;
- break;
-
- case 1: // User selected DS3DALG_HRTF_FULL
- guid3DAlgorithm = DS3DALG_HRTF_FULL;
- break;
-
- case 2: // User selected DS3DALG_HRTF_LIGHT
- guid3DAlgorithm = DS3DALG_HRTF_LIGHT;
- break;
- }
-
- // Load the wave file into a DirectSound buffer
- hr = g_pSoundManager->Create( &g_pSound, strFileName, DSBCAPS_CTRL3D, guid3DAlgorithm );
- if( FAILED( hr ) || hr == DS_NO_VIRTUALIZATION )
- {
- DXTRACE_ERR_NOMSGBOX( TEXT("Create"), hr );
- if( DS_NO_VIRTUALIZATION == hr )
- {
- MessageBox( hDlg, "The 3D virtualization algorithm requested is not supported under this "
- "operating system. It is available only on Windows 2000, Windows ME, and Windows 98 with WDM "
- "drivers and beyond. Creating buffer with no virtualization.",
- "DirectSound Sample", MB_OK );
- }
-
- // Unknown error, but not a critical failure, so just update the status
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("Could not create sound buffer.") );
- return;
- }
-
- // Get the 3D buffer from the secondary buffer
- if( FAILED( hr = g_pSound->Get3DBufferInterface( 0, &g_pDS3DBuffer ) ) )
- {
- DXTRACE_ERR( TEXT("Get3DBufferInterface"), hr );
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Could not get 3D buffer.") );
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
- return;
- }
-
- // Get the 3D buffer parameters
- g_dsBufferParams.dwSize = sizeof(DS3DBUFFER);
- g_pDS3DBuffer->GetAllParameters( &g_dsBufferParams );
-
- // Set new 3D buffer parameters
- g_dsBufferParams.dwMode = DS3DMODE_HEADRELATIVE;
- g_pDS3DBuffer->SetAllParameters( &g_dsBufferParams, DS3D_IMMEDIATE );
-
- DSBCAPS dsbcaps;
- ZeroMemory( &dsbcaps, sizeof(DSBCAPS) );
- dsbcaps.dwSize = sizeof(DSBCAPS);
-
- LPDIRECTSOUNDBUFFER pDSB = g_pSound->GetBuffer( 0 );
- pDSB->GetCaps( &dsbcaps );
- if( ( dsbcaps.dwFlags & DSBCAPS_LOCHARDWARE ) != 0 )
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("File loaded using hardware mixing.") );
- else
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("File loaded using software mixing.") );
-
- // Update the UI controls to show the sound as the file is loaded
- SetDlgItemText( hDlg, IDC_FILENAME, strFileName );
- EnablePlayUI( hDlg, TRUE );
-
- g_bAllowMovementTimer = TRUE;
-
- // Remember the path for next time
- strcpy( strPath, strFileName );
- char* strLastSlash = strrchr( strPath, '\\' );
- strLastSlash[0] = '\0';
-
- // Set the slider positions
- SetSlidersPos( hDlg, 0.0f, 0.0f, ORBIT_MAX_RADIUS, ORBIT_MAX_RADIUS*2.0f );
- OnSliderChanged( hDlg );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: AlgorithmDlgProc()
- // Desc: Handles dialog messages
- //-----------------------------------------------------------------------------
- INT_PTR CALLBACK AlgorithmDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam )
- {
- // Default is DS3DALG_NO_VIRTUALIZATION for fastest performance
- static int nDefaultRadio = IDC_NO_VIRT_RADIO;
-
- switch( msg )
- {
- case WM_INITDIALOG:
- // Default is DS3DALG_NO_VIRTUALIZATION for fastest performance
- CheckRadioButton( hDlg, IDC_NO_VIRT_RADIO, IDC_LIGHT_VIRT_RADIO, nDefaultRadio );
- return TRUE; // Message handled
-
- case WM_COMMAND:
- switch( LOWORD(wParam) )
- {
- case IDCANCEL:
- EndDialog( hDlg, -1 );
- return TRUE; // Message handled
-
- case IDOK:
- if( IsDlgButtonChecked( hDlg, IDC_NO_VIRT_RADIO ) == BST_CHECKED )
- {
- nDefaultRadio = IDC_NO_VIRT_RADIO;
- EndDialog( hDlg, 0 );
- }
-
- if( IsDlgButtonChecked( hDlg, IDC_HIGH_VIRT_RADIO ) == BST_CHECKED )
- {
- nDefaultRadio = IDC_HIGH_VIRT_RADIO;
- EndDialog( hDlg, 1 );
- }
-
- if( IsDlgButtonChecked( hDlg, IDC_LIGHT_VIRT_RADIO ) == BST_CHECKED )
- {
- nDefaultRadio = IDC_LIGHT_VIRT_RADIO;
- EndDialog( hDlg, 2 );
- }
-
- return TRUE; // Message handled
- }
- break;
- }
-
- return FALSE; // Message not handled
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnPlaySound()
- // Desc: User hit the "Play" button
- //-----------------------------------------------------------------------------
- HRESULT OnPlaySound( HWND hDlg )
- {
- HRESULT hr;
-
- if( NULL == g_pSound )
- return E_FAIL;
-
- // Play buffer always in looped mode just for this sample
- if( FAILED( hr = g_pSound->Play( 0, DSBPLAY_LOOPING ) ) )
- return DXTRACE_ERR( TEXT("Play"), hr );
-
- // Update the UI controls to show the sound as playing
- EnablePlayUI( hDlg, FALSE );
- SetDlgItemText( hDlg, IDC_STATUS, TEXT("Sound playing.") );
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnSliderChanged()
- // Desc: Called when the dialog's slider bars are changed by the user, or need
- // updating
- //-----------------------------------------------------------------------------
- VOID OnSliderChanged( HWND hDlg )
- {
- TCHAR strBuffer[10];
- FLOAT fDopplerFactor;
- FLOAT fRolloffFactor;
- FLOAT fMinDistance;
- FLOAT fMaxDistance;
-
- // Get handles to dialog items
- HWND hDopplerSlider = GetDlgItem( hDlg, IDC_DOPPLER_SLIDER );
- HWND hRolloffSlider = GetDlgItem( hDlg, IDC_ROLLOFF_SLIDER );
- HWND hMinDistSlider = GetDlgItem( hDlg, IDC_MINDISTANCE_SLIDER );
- HWND hMaxDistSlider = GetDlgItem( hDlg, IDC_MAXDISTANCE_SLIDER );
-
- // Get the position of the sliders
- fDopplerFactor = ConvertLinearSliderPosToLogScale( (long)SendMessage( hDopplerSlider, TBM_GETPOS, 0, 0 ) );
- fRolloffFactor = ConvertLinearSliderPosToLogScale( (long)SendMessage( hRolloffSlider, TBM_GETPOS, 0, 0 ) );
- fMinDistance = ConvertLinearSliderPosToLogScale( (long)SendMessage( hMinDistSlider, TBM_GETPOS, 0, 0 ) );
- fMaxDistance = ConvertLinearSliderPosToLogScale( (long)SendMessage( hMaxDistSlider, TBM_GETPOS, 0, 0 ) );
-
- // Set the static text boxes
- sprintf( strBuffer, TEXT("%.2f"), fDopplerFactor );
- SetWindowText( GetDlgItem( hDlg, IDC_DOPPLERFACTOR ), strBuffer );
-
- sprintf( strBuffer, TEXT("%.2f"), fRolloffFactor );
- SetWindowText( GetDlgItem( hDlg, IDC_ROLLOFFFACTOR ), strBuffer );
-
- sprintf( strBuffer, TEXT("%.2f"), fMinDistance );
- SetWindowText( GetDlgItem( hDlg, IDC_MINDISTANCE ), strBuffer );
-
- sprintf( strBuffer, TEXT("%.2f"), fMaxDistance );
- SetWindowText( GetDlgItem( hDlg, IDC_MAXDISTANCE ), strBuffer );
-
- // Set the options in the DirectSound buffer
- Set3DParameters( fDopplerFactor, fRolloffFactor, fMinDistance, fMaxDistance );
-
- EnableWindow( GetDlgItem( hDlg, IDC_APPLY ), g_bDeferSettings );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: Set3DParameters()
- // Desc: Set the 3D buffer parameters
- //-----------------------------------------------------------------------------
- VOID Set3DParameters( FLOAT fDopplerFactor, FLOAT fRolloffFactor,
- FLOAT fMinDistance, FLOAT fMaxDistance )
- {
- // Every change to 3-D sound buffer and listener settings causes
- // DirectSound to remix, at the expense of CPU cycles.
- // To minimize the performance impact of changing 3-D settings,
- // use the DS3D_DEFERRED flag in the dwApply parameter of any of
- // the IDirectSound3DListener or IDirectSound3DBuffer methods that
- // change 3-D settings. Then call the IDirectSound3DListener::CommitDeferredSettings
- // method to execute all of the deferred commands at once.
- DWORD dwApplyFlag = ( g_bDeferSettings ) ? DS3D_DEFERRED : DS3D_IMMEDIATE;
-
- g_dsListenerParams.flDopplerFactor = fDopplerFactor;
- g_dsListenerParams.flRolloffFactor = fRolloffFactor;
-
- if( g_pDSListener )
- g_pDSListener->SetAllParameters( &g_dsListenerParams, dwApplyFlag );
-
- g_dsBufferParams.flMinDistance = fMinDistance;
- g_dsBufferParams.flMaxDistance = fMaxDistance;
-
- if( g_pDS3DBuffer )
- g_pDS3DBuffer->SetAllParameters( &g_dsBufferParams, dwApplyFlag );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: EnablePlayUI()
- // Desc: Enables or disables the Play UI controls
- //-----------------------------------------------------------------------------
- VOID EnablePlayUI( HWND hDlg, BOOL bEnable )
- {
- if( bEnable )
- {
- EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), TRUE );
- EnableWindow( GetDlgItem( hDlg, IDC_STOP ), FALSE );
- SetFocus( GetDlgItem( hDlg, IDC_PLAY ) );
- }
- else
- {
- EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), FALSE );
- EnableWindow( GetDlgItem( hDlg, IDC_STOP ), TRUE );
- SetFocus( GetDlgItem( hDlg, IDC_STOP ) );
- }
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnMovementTimer()
- // Desc: Periodically updates the position of the object
- //-----------------------------------------------------------------------------
- VOID OnMovementTimer( HWND hDlg )
- {
- FLOAT fXScale;
- FLOAT fYScale;
-
- if( !g_bAllowMovementTimer )
- return;
-
- HWND hHorzSlider = GetDlgItem( hDlg, IDC_HORIZONTAL_SLIDER );
- HWND hVertSlider = GetDlgItem( hDlg, IDC_VERTICAL_SLIDER );
-
- fXScale = SendMessage( hHorzSlider, TBM_GETPOS, 0, 0 ) / 100.0f;
- fYScale = SendMessage( hVertSlider, TBM_GETPOS, 0, 0 ) / 100.0f;
- FLOAT t = timeGetTime()/1000.0f;
-
- // Move the sound object around the listener. The maximum radius of the
- // orbit is 27.5 units.
- D3DVECTOR vPosition;
- vPosition.x = ORBIT_MAX_RADIUS * fXScale * (FLOAT)sin(t);
- vPosition.y = 0.0f;
- vPosition.z = ORBIT_MAX_RADIUS * fYScale * (FLOAT)cos(t);
-
- D3DVECTOR vVelocity;
- vVelocity.x = ORBIT_MAX_RADIUS * fXScale * (FLOAT)sin(t+0.05f);
- vVelocity.y = 0.0f;
- vVelocity.z = ORBIT_MAX_RADIUS * fYScale * (FLOAT)cos(t+0.05f);
-
- // Show the object's position on the dialog's grid control
- UpdateGrid( hDlg, vPosition.x, vPosition.z );
-
- // Set the sound buffer velocity and position
- SetObjectProperties( &vPosition, &vVelocity );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: UpdateGrid()
- // Desc: Draws a red dot in the dialog's grid bitmap at the x,y coordinate.
- //-----------------------------------------------------------------------------
- VOID UpdateGrid( HWND hDlg, FLOAT x, FLOAT y )
- {
- static LONG s_lPixel[5] = { CLR_INVALID,CLR_INVALID,CLR_INVALID,CLR_INVALID,CLR_INVALID };
- static LONG s_lX = 0;
- static LONG s_lY = 0;
-
- HWND hWndGrid = GetDlgItem( hDlg, IDC_RENDER_WINDOW );
- HDC hDC = GetDC( hWndGrid );
- RECT rc;
-
- // Don't update the grid if a WM_PAINT will be called soon
- BOOL bUpdateInProgress = GetUpdateRect(hDlg,NULL,FALSE);
- if( bUpdateInProgress )
- return;
-
- if( s_lPixel[0] != CLR_INVALID )
- {
- // Replace pixels from that were overdrawn last time
- SetPixel( hDC, s_lX-1, s_lY+0, s_lPixel[0] );
- SetPixel( hDC, s_lX+0, s_lY-1, s_lPixel[1] );
- SetPixel( hDC, s_lX+0, s_lY+0, s_lPixel[2] );
- SetPixel( hDC, s_lX+0, s_lY+1, s_lPixel[3] );
- SetPixel( hDC, s_lX+1, s_lY+0, s_lPixel[4] );
- }
-
- // Convert the world space x,y coordinates to pixel coordinates
- GetClientRect( hWndGrid, &rc );
- s_lX = (LONG)( ( x/ORBIT_MAX_RADIUS + 1 ) * ( rc.left + rc.right ) / 2 );
- s_lY = (LONG)( (-y/ORBIT_MAX_RADIUS + 1 ) * ( rc.top + rc.bottom ) / 2 );
-
- // Save the pixels before drawing the cross hair
- s_lPixel[0] = GetPixel( hDC, s_lX-1, s_lY+0 );
- s_lPixel[1] = GetPixel( hDC, s_lX+0, s_lY-1 );
- s_lPixel[2] = GetPixel( hDC, s_lX+0, s_lY+0 );
- s_lPixel[3] = GetPixel( hDC, s_lX+0, s_lY+1 );
- s_lPixel[4] = GetPixel( hDC, s_lX+1, s_lY+0 );
-
- // Draw a crosshair object in red pixels
- SetPixel( hDC, s_lX-1, s_lY+0, 0x000000ff );
- SetPixel( hDC, s_lX+0, s_lY-1, 0x000000ff );
- SetPixel( hDC, s_lX+0, s_lY+0, 0x000000ff );
- SetPixel( hDC, s_lX+0, s_lY+1, 0x000000ff );
- SetPixel( hDC, s_lX+1, s_lY+0, 0x000000ff );
-
- ReleaseDC( hWndGrid, hDC );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: SetObjectProperties()
- // Desc: Sets the position and velocity on the 3D buffer
- //-----------------------------------------------------------------------------
- VOID SetObjectProperties( D3DVECTOR* pvPosition, D3DVECTOR* pvVelocity )
- {
- // Every change to 3-D sound buffer and listener settings causes
- // DirectSound to remix, at the expense of CPU cycles.
- // To minimize the performance impact of changing 3-D settings,
- // use the DS3D_DEFERRED flag in the dwApply parameter of any of
- // the IDirectSound3DListener or IDirectSound3DBuffer methods that
- // change 3-D settings. Then call the IDirectSound3DListener::CommitDeferredSettings
- // method to execute all of the deferred commands at once.
- memcpy( &g_dsBufferParams.vPosition, pvPosition, sizeof(D3DVECTOR) );
- memcpy( &g_dsBufferParams.vVelocity, pvVelocity, sizeof(D3DVECTOR) );
-
- if( g_pDS3DBuffer )
- g_pDS3DBuffer->SetAllParameters( &g_dsBufferParams, DS3D_IMMEDIATE );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: ConvertLinearSliderPosToLogScale()
- // Desc: Converts a linear slider position to a quasi logrithmic scale
- //-----------------------------------------------------------------------------
- FLOAT ConvertLinearSliderPosToLogScale( LONG lSliderPos )
- {
- if( lSliderPos > 0 && lSliderPos <= 10 )
- {
- return lSliderPos*0.01f;
- }
- else if( lSliderPos > 10 && lSliderPos <= 20 )
- {
- return (lSliderPos-10)*0.1f;
- }
- else if( lSliderPos > 20 && lSliderPos <= 30 )
- {
- return (lSliderPos-20)*1.0f;
- }
- else if( lSliderPos > 30 && lSliderPos <= 40 )
- {
- return (lSliderPos-30)*10.0f;
- }
-
- return 0.0f;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: ConvertLinearSliderPosToLogScale()
- // Desc: Converts a quasi logrithmic scale to a slider position
- //-----------------------------------------------------------------------------
- LONG ConvertLogScaleToLinearSliderPosTo( FLOAT fValue )
- {
- if( fValue > 0.0f && fValue <= 0.1f )
- {
- return (LONG)(fValue/0.01f);
- }
- else if( fValue > 0.1f && fValue <= 1.0f )
- {
- return (LONG)(fValue/0.1f) + 10;
- }
- else if( fValue > 1.0f && fValue <= 10.0f )
- {
- return (LONG)(fValue/1.0f) + 20;
- }
- else if( fValue > 10.0f && fValue <= 100.0f )
- {
- return (LONG)(fValue/10.0f) + 30;
- }
-
- return 0;
- }
-
-
-