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AppleWin/source/MouseInterface.cpp

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// Based on Apple in PC's mousecard.cpp
// - Permission given by Kyle Kim to reuse in AppleWin
/*
Contiki v1.3:
. I still see 2 cases of abnormal operation. These occur during boot up, during some period of disk access.
. See Contiki's IRQ() in apple2-stdmou.s
** Normal operation **
<VBL EVENT> : h/w asserts IRQ
<6502 jumps to IRQ vector>
. MOUSE_SERVE : h/w deasserts IRQ
. MOUSE_READ
. RTS with C=1
<VBL EVENT> : h/w asserts IRQ
<6502 jumps to IRQ vector>
. MOUSE_SERVE : h/w deasserts IRQ
. MOUSE_READ
. RTS with C=1
Etc.
** Abnormal operation **
<VBL EVENT> : h/w asserts IRQ
<6502 jumps to IRQ vector>
. MOUSE_SERVE (for VBL EVENT) : h/w deasserts IRQ
<VBL EVENT> : h/w asserts IRQ
. MOUSE_READ
- this clears the mouse IRQ status byte in the mouse-card's "h/w"
. RTS with C=1
<6502 jumps to IRQ vector>
. MOUSE_SERVE (for MOVEMENT EVENT) : h/w deasserts IRQ
- but IRQ status byte is 0
. RTS with C=0
*/
#include "stdafx.h"
#include "Structs.h"
#include "Common.h"
#include "CPU.h"
#include "Frame.h" // FrameSetCursorPosByMousePos()
#include "Log.h"
#include "Memory.h"
#include "MouseInterface.h"
#include "SoundCore.h" // SAFE_RELEASE()
#include "..\resource\resource.h"
#ifdef _DEBUG
#define _DEBUG_SPURIOUS_IRQ
#endif
// Sets mouse mode
#define MOUSE_SET 0x00
// Reads mouse position
#define MOUSE_READ 0x10
// Services mouse interrupt
#define MOUSE_SERV 0x20
// Clears mouse positions to 0 (for delta mode)
#define MOUSE_CLEAR 0x30
// Sets mouse position to a user-defined pos
#define MOUSE_POS 0x40
// Resets mouse clamps to default values
// Sets mouse position to 0,0
#define MOUSE_INIT 0x50
// Sets mouse bounds in a window
#define MOUSE_CLAMP 0x60
// Sets mouse to upper-left corner of clamp win
#define MOUSE_HOME 0x70
// Set VBL Timing : 0x90 is 60Hz, 0x91 is 50Hz
#define MOUSE_TIME 0x90
#define BIT0 0x01
#define BIT1 0x02
#define BIT2 0x04
#define BIT3 0x08
#define BIT4 0x10
#define BIT5 0x20
#define BIT6 0x40
#define BIT7 0x80
// Interrupt status byte
//Bit 7 6 5 4 3 2 1 0
// | | | | | | | |
#define STAT_PREV_BUTTON1 (1<<0) // | | | | | | | \--- Previously, button 1 was up (0) or down (1)
#define STAT_INT_MOVEMENT (1<<1) // | | | | | | \----- Movement interrupt
#define STAT_INT_BUTTON (1<<2) // | | | | | \------- Button 0/1 interrupt
#define STAT_INT_VBL (1<<3) // | | | | \--------- VBL interrupt
#define STAT_CURR_BUTTON1 (1<<4) // | | | \----------- Currently, button 1 is up (0) or down (1)
#define STAT_MOVEMENT_SINCE_READMOUSE (1<<5) // | | \------------- X/Y moved since last READMOUSE
#define STAT_PREV_BUTTON0 (1<<6) // | \--------------- Previously, button 0 was up (0) or down (1)
#define STAT_CURR_BUTTON0 (1<<7) // \----------------- Currently, button 0 is up (0) or down (1)
#define STAT_INT_ALL (STAT_INT_VBL | STAT_INT_BUTTON | STAT_INT_MOVEMENT)
// Mode byte
//Bit 7 6 5 4 3 2 1 0
// | | | | | | | |
#define MODE_MOUSE_ON (1<<0) // | | | | | | | \--- Mouse off (0) or on (1)
#define MODE_INT_MOVEMENT (1<<1) // | | | | | | \----- Interrupt if mouse is moved
#define MODE_INT_BUTTON (1<<2) // | | | | | \------- Interrupt if button is pressed
#define MODE_INT_VBL (1<<3) // | | | | \--------- Interrupt on VBL
#define MODE_RESERVED4 (1<<4) // | | | \----------- Reserved
#define MODE_RESERVED5 (1<<5) // | | \------------- Reserved
#define MODE_RESERVED6 (1<<6) // | \--------------- Reserved
#define MODE_RESERVED7 (1<<7) // \----------------- Reserved
#define MODE_INT_ALL STAT_INT_ALL
//===========================================================================
void M6821_Listener_B( void* objTo, BYTE byData )
{
((CMouseInterface*)objTo)->On6821_B( byData );
}
void M6821_Listener_A( void* objTo, BYTE byData )
{
((CMouseInterface*)objTo)->On6821_A( byData );
}
//===========================================================================
CMouseInterface::CMouseInterface() :
m_pSlotRom(NULL)
{
m_6821.SetListenerB( this, M6821_Listener_B );
m_6821.SetListenerA( this, M6821_Listener_A );
Uninitialize();
Reset();
}
CMouseInterface::~CMouseInterface()
{
delete [] m_pSlotRom;
}
//===========================================================================
void CMouseInterface::Initialize(LPBYTE pCxRomPeripheral, UINT uSlot)
{
const UINT FW_SIZE = 2*1024;
HRSRC hResInfo = FindResource(NULL, MAKEINTRESOURCE(IDR_MOUSEINTERFACE_FW), "FIRMWARE");
if(hResInfo == NULL)
return;
DWORD dwResSize = SizeofResource(NULL, hResInfo);
if(dwResSize != FW_SIZE)
return;
HGLOBAL hResData = LoadResource(NULL, hResInfo);
if(hResData == NULL)
return;
BYTE* pData = (BYTE*) LockResource(hResData); // NB. Don't need to unlock resource
if(pData == NULL)
return;
m_uSlot = uSlot;
if (m_pSlotRom == NULL)
{
m_pSlotRom = new BYTE [FW_SIZE];
if (m_pSlotRom)
memcpy(m_pSlotRom, pData, FW_SIZE);
}
//
m_bActive = true;
SetEnabled(true);
SetSlotRom(); // Pre: m_bActive == true
RegisterIoHandler(uSlot, &CMouseInterface::IORead, &CMouseInterface::IOWrite, NULL, NULL, this, NULL);
}
void CMouseInterface::Uninitialize()
{
m_bActive = false;
}
void CMouseInterface::Reset()
{
m_by6821A = 0;
m_by6821B = 0x40; // Set PB6
m_6821.SetPB(m_by6821B);
m_bVBL = false;
//
m_nX = 0;
m_nY = 0;
m_iX = 0;
m_iMinX = 0;
m_iMaxX = 1023;
m_iY = 0;
m_iMinY = 0;
m_iMaxY = 1023;
m_bButtons[0] = m_bButtons[1] = FALSE;
//
Clear();
memset( m_byBuff, 0, sizeof( m_byBuff ) );
SetSlotRom();
}
void CMouseInterface::SetSlotRom()
{
if (!m_bActive)
return;
LPBYTE pCxRomPeripheral = MemGetCxRomPeripheral();
if (pCxRomPeripheral == NULL)
return;
UINT uOffset = (m_by6821B << 7) & 0x0700;
memcpy(pCxRomPeripheral+m_uSlot*256, m_pSlotRom+uOffset, 256);
if (mem)
memcpy(mem+0xC000+m_uSlot*256, m_pSlotRom+uOffset, 256);
}
//===========================================================================
BYTE __stdcall CMouseInterface::IORead(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nCyclesLeft)
{
UINT uSlot = ((uAddr & 0xff) >> 4) - 8;
CMouseInterface* pMouseIF = (CMouseInterface*) MemGetSlotParameters(uSlot);
BYTE byRS;
byRS = uAddr & 3;
return pMouseIF->m_6821.Read( byRS );
}
BYTE __stdcall CMouseInterface::IOWrite(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nCyclesLeft)
{
UINT uSlot = ((uAddr & 0xff) >> 4) - 8;
CMouseInterface* pMouseIF = (CMouseInterface*) MemGetSlotParameters(uSlot);
BYTE byRS;
byRS = uAddr & 3;
pMouseIF->m_6821.Write( byRS, uValue );
return 0;
}
//===========================================================================
void CMouseInterface::On6821_A(BYTE byData)
{
m_by6821A = byData;
}
void CMouseInterface::On6821_B(BYTE byData)
{
BYTE byDiff = ( m_by6821B ^ byData ) & 0x3E;
if ( byDiff )
{
m_by6821B &= ~0x3E;
m_by6821B |= byData & 0x3E;
if ( byDiff & BIT5 ) // Write to 0285 chip
{
if ( byData & BIT5 )
m_by6821B |= BIT7; // OK, I'm ready to read from MC6821
else // Clock Activate for read
{
m_byBuff[m_nBuffPos++] = m_by6821A;
if ( m_nBuffPos == 1 )
OnCommand();
if ( m_nBuffPos == m_nDataLen || m_nBuffPos > 7 )
{
OnWrite(); // Have written all, Commit the command.
m_nBuffPos = 0;
}
m_by6821B &= ~BIT7; // for next reading
m_6821.SetPB( m_by6821B );
}
}
if ( byDiff & BIT4 ) // Read from 0285 chip ?
{
if ( byData & BIT4 )
m_by6821B &= ~BIT6; // OK, I'll prepare next value
else // Clock Activate for write
{
if ( m_nBuffPos ) // if m_nBuffPos is 0, something goes wrong!
m_nBuffPos++;
if ( m_nBuffPos == m_nDataLen || m_nBuffPos > 7 )
m_nBuffPos = 0; // Have read all, ready for next command.
else
m_6821.SetPA( m_byBuff[m_nBuffPos] );
m_by6821B |= BIT6; // for next writing
}
}
m_6821.SetPB( m_by6821B );
//
SetSlotRom(); // Update Cn00 ROM page
}
}
void CMouseInterface::OnCommand()
{
#ifdef _DEBUG_SPURIOUS_IRQ
static UINT uSpuriousIrqCount = 0;
char szDbg[200];
BYTE byOldState = m_byState;
#endif
switch( m_byBuff[0] & 0xF0 )
{
case MOUSE_SET:
m_nDataLen = 1;
m_byMode = m_byBuff[0] & 0x0F;
break;
case MOUSE_READ: // Read
m_nDataLen = 6;
m_byState &= STAT_MOVEMENT_SINCE_READMOUSE;
m_nX = m_iX;
m_nY = m_iY;
if ( m_bBtn0 ) m_byState |= STAT_PREV_BUTTON0; // Previous Button 0
if ( m_bBtn1 ) m_byState |= STAT_PREV_BUTTON1; // Previous Button 1
m_bBtn0 = m_bButtons[0];
m_bBtn1 = m_bButtons[1];
if ( m_bBtn0 ) m_byState |= STAT_CURR_BUTTON0; // Current Button 0
if ( m_bBtn1 ) m_byState |= STAT_CURR_BUTTON1; // Current Button 1
m_byBuff[1] = m_nX & 0xFF;
m_byBuff[2] = ( m_nX >> 8 ) & 0xFF;
m_byBuff[3] = m_nY & 0xFF;
m_byBuff[4] = ( m_nY >> 8 ) & 0xFF;
m_byBuff[5] = m_byState; // button 0/1 interrupt status
m_byState &= ~STAT_MOVEMENT_SINCE_READMOUSE;
#ifdef _DEBUG_SPURIOUS_IRQ
sprintf(szDbg, "[MOUSE_READ] Old=%02X New=%02X\n", byOldState, m_byState); OutputDebugString(szDbg);
#endif
break;
case MOUSE_SERV:
m_nDataLen = 2;
m_byBuff[1] = m_byState & ~STAT_MOVEMENT_SINCE_READMOUSE; // reason of interrupt
#ifdef _DEBUG_SPURIOUS_IRQ
if ((m_byMode & MODE_INT_ALL) && (m_byBuff[1] & MODE_INT_ALL) == 0)
{
uSpuriousIrqCount++;
sprintf(szDbg, "[MOUSE_SERV] 0x%04X Buff[1]=0x%02X, ***\n", uSpuriousIrqCount, m_byBuff[1]); OutputDebugString(szDbg);
}
else
{
sprintf(szDbg, "[MOUSE_SERV] ------ Buff[1]=0x%02X\n", m_byBuff[1]); OutputDebugString(szDbg);
}
#endif
CpuIrqDeassert(IS_MOUSE);
break;
case MOUSE_CLEAR:
Clear(); // [TC] NB. Don't reset clamp values (eg. Fantavision)
m_nDataLen = 1;
break;
case MOUSE_POS:
m_nDataLen = 5;
break;
case MOUSE_INIT:
m_nDataLen = 3;
m_byBuff[1] = 0xFF; // I don't know what it is
break;
case MOUSE_CLAMP:
m_nDataLen = 5;
break;
case MOUSE_HOME:
m_nDataLen = 1;
SetPositionAbs( 0, 0 );
break;
case MOUSE_TIME: // 0x90
switch( m_byBuff[0] & 0x0C )
{
case 0x00: m_nDataLen = 1; break; // write cmd ( #$90 is DATATIME 60Hz, #$91 is 50Hz )
case 0x04: m_nDataLen = 3; break; // write cmd, $0478, $04F8
case 0x08: m_nDataLen = 2; break; // write cmd, $0578
case 0x0C: m_nDataLen = 4; break; // write cmd, $0478, $04F8, $0578
}
break;
case 0xA0:
m_nDataLen = 2;
break;
case 0xB0:
case 0xC0:
m_nDataLen = 1;
break;
default:
m_nDataLen = 1;
//TRACE( "CMD : UNKNOWN CMD : #$%02X\n", m_byBuff[0] );
//_ASSERT(0);
break;
}
m_6821.SetPA( m_byBuff[1] );
}
void CMouseInterface::OnWrite()
{
int nMin, nMax;
switch( m_byBuff[0] & 0xF0 )
{
case MOUSE_CLAMP:
// Blazing Paddles:
// . MOUSE_CLAMP(Y, 0xFFEC, 0x00D3)
// . MOUSE_CLAMP(X, 0xFFEC, 0x012B)
nMin = ( m_byBuff[3] << 8 ) | m_byBuff[1];
nMax = ( m_byBuff[4] << 8 ) | m_byBuff[2];
if ( m_byBuff[0] & 1 ) // Clamp Y
SetClampY( nMin, nMax );
else // Clamp X
SetClampX( nMin, nMax );
break;
case MOUSE_POS:
m_nX = ( m_byBuff[2] << 8 ) | m_byBuff[1];
m_nY = ( m_byBuff[4] << 8 ) | m_byBuff[3];
SetPositionAbs( m_nX, m_nY );
break;
case MOUSE_INIT:
m_nX = 0;
m_nY = 0;
SetClampX( 0, 1023 );
SetClampY( 0, 1023 );
SetPositionAbs( 0, 0 );
break;
}
}
void CMouseInterface::OnMouseEvent(bool bEventVBL)
{
int byState = 0;
if ( !( m_byMode & MODE_MOUSE_ON ) ) // Mouse Off
return;
BOOL bBtn0 = m_bButtons[0];
BOOL bBtn1 = m_bButtons[1];
if ( m_nX != m_iX || m_nY != m_iY )
{
byState |= STAT_INT_MOVEMENT|STAT_MOVEMENT_SINCE_READMOUSE; // X/Y moved since last READMOUSE | Movement interrupt
m_byState |= STAT_MOVEMENT_SINCE_READMOUSE; // [TC] Used by CopyII+9.1 and ProTERM3.1
}
if ( m_bBtn0 != bBtn0 || m_bBtn1 != bBtn1 )
byState |= STAT_INT_BUTTON; // Button 0/1 interrupt
if ( bEventVBL )
byState |= STAT_INT_VBL;
//byState &= m_byMode & 0x2E;
byState &= ((m_byMode & MODE_INT_ALL) | STAT_MOVEMENT_SINCE_READMOUSE); // [TC] Keep "X/Y moved since last READMOUSE" for next MOUSE_READ (Contiki v1.3 uses this)
if ( byState & STAT_INT_ALL )
{
m_byState |= byState;
CpuIrqAssert(IS_MOUSE);
#ifdef _DEBUG_SPURIOUS_IRQ
char szDbg[200]; sprintf(szDbg, "[MOUSE EVNT] 0x%02X Mode=0x%02X\n", m_byState, m_byMode); OutputDebugString(szDbg);
#endif
}
}
void CMouseInterface::SetVBlank(bool bVBL)
{
if ( m_bVBL != bVBL )
{
m_bVBL = bVBL;
if ( m_bVBL ) // Rising edge
OnMouseEvent(true);
}
}
void CMouseInterface::Clear()
{
m_nBuffPos = 0;
m_nDataLen = 1;
// m_byMode = 0; // Not for BeagleWrite / MultiScribe
m_byState = 0;
m_nX = 0;
m_nY = 0;
m_bBtn0 = 0;
m_bBtn1 = 0;
SetPositionAbs( 0, 0 );
// CpuIrqDeassert(IS_MOUSE);
}
//===========================================================================
int CMouseInterface::ClampX()
{
if ( m_iX > m_iMaxX )
{
m_iX = m_iMaxX;
return 1;
}
else if ( m_iX < m_iMinX )
{
m_iX = m_iMinX;
return -1;
}
return 0;
}
int CMouseInterface::ClampY()
{
if ( m_iY > m_iMaxY )
{
m_iY = m_iMaxY;
return 1;
}
else if ( m_iY < m_iMinY )
{
m_iY = m_iMinY;
return -1;
}
return 0;
}
void CMouseInterface::SetClampX(int iMinX, int iMaxX)
{
if ( (UINT)iMinX > 0xFFFF || (UINT)iMaxX > 0xFFFF )
{
_ASSERT(0);
return;
}
if ( iMinX > iMaxX )
{
// For Blazing Paddles
int iNewMaxX = (iMinX + iMaxX) & 0xFFFF;
iMinX = 0;
iMaxX = iNewMaxX;
}
m_iMaxX = iMaxX;
m_iMinX = iMinX;
ClampX();
}
void CMouseInterface::SetClampY(int iMinY, int iMaxY)
{
if ( (UINT)iMinY > 0xFFFF || (UINT)iMaxY > 0xFFFF )
{
_ASSERT(0);
return;
}
if ( iMinY > iMaxY )
{
// For Blazing Paddles
int iNewMaxY = (iMinY + iMaxY) & 0xFFFF;
iMinY = 0;
iMaxY = iNewMaxY;
}
m_iMaxY = iMaxY;
m_iMinY = iMinY;
ClampY();
}
void CMouseInterface::SetPositionAbs(int x, int y)
{
m_iX = x;
m_iY = y;
FrameSetCursorPosByMousePos();
}
void CMouseInterface::SetPositionRel(long dX, long dY, int* pOutOfBoundsX, int* pOutOfBoundsY)
{
m_iX += dX;
*pOutOfBoundsX = ClampX();
m_iY += dY;
*pOutOfBoundsY = ClampY();
OnMouseEvent();
}
void CMouseInterface::SetButton(eBUTTON Button, eBUTTONSTATE State)
{
m_bButtons[Button]= (State == BUTTON_DOWN) ? TRUE : FALSE;
OnMouseEvent();
}
//=============================================================================
// DirectInput interface
//=============================================================================
//#define STRICT
#define DIRECTINPUT_VERSION 0x0800
#include <dinput.h>
extern bool g_bDisableDirectInput; // currently in AppleWin.h
namespace DIMouse
{
static LPDIRECTINPUT8 g_pDI = NULL;
static LPDIRECTINPUTDEVICE8 g_pMouse = NULL;
#define SAMPLE_BUFFER_SIZE 16 // arbitrary number of buffer elements
static UINT_PTR g_TimerIDEvent = 0;
//-----------------------------------------------------------------------------
// Name: OnCreateDevice()
// Desc: Sets up the mouse device using the flags from the dialog.
//-----------------------------------------------------------------------------
HRESULT DirectInputInit( HWND hDlg )
{
LogFileOutput("DirectInputInit: g_bDisableDirectInput=%d\n", g_bDisableDirectInput);
if (g_bDisableDirectInput)
return S_OK;
#ifdef NO_DIRECT_X
return E_FAIL;
#else // NO_DIRECT_X
HRESULT hr;
BOOL bExclusive;
BOOL bForeground;
BOOL bImmediate;
DWORD dwCoopFlags;
DirectInputUninit(hDlg);
LogFileOutput("DirectInputInit: DirectInputUninit()\n");
// Determine where the buffer would like to be allocated
bExclusive = FALSE;
bForeground = FALSE; // Otherwise get DIERR_OTHERAPPHASPRIO (== E_ACCESSDENIED) on Acquire()
bImmediate = TRUE;
if( bExclusive )
dwCoopFlags = DISCL_EXCLUSIVE;
else
dwCoopFlags = DISCL_NONEXCLUSIVE;
if( bForeground )
dwCoopFlags |= DISCL_FOREGROUND;
else
dwCoopFlags |= DISCL_BACKGROUND;
// Create a DInput object
hr = DirectInput8Create( GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (VOID**)&g_pDI, NULL );
LogFileOutput("DirectInputInit: DirectInput8Create(), hr=0x%08X\n", hr);
if (FAILED(hr))
return hr;
// Obtain an interface to the system mouse device.
hr = g_pDI->CreateDevice( GUID_SysMouse, &g_pMouse, NULL );
LogFileOutput("DirectInputInit: CreateDevice(), hr=0x%08X\n", hr);
if (FAILED(hr))
return hr;
// Set the data format to "mouse format" - a predefined data format
//
// A data format specifies which controls on a device we
// are interested in, and how they should be reported.
//
// This tells DirectInput that we will be passing a
// DIMOUSESTATE2 structure to IDirectInputDevice::GetDeviceState.
hr = g_pMouse->SetDataFormat( &c_dfDIMouse2 );
LogFileOutput("DirectInputInit: SetDataFormat(), hr=0x%08X\n", hr);
if (FAILED(hr))
return hr;
// Set the cooperativity level to let DirectInput know how
// this device should interact with the system and with other
// DirectInput applications.
hr = g_pMouse->SetCooperativeLevel( hDlg, dwCoopFlags );
LogFileOutput("DirectInputInit: SetCooperativeLevel(), hr=0x%08X\n", hr);
if( hr == DIERR_UNSUPPORTED && !bForeground && bExclusive )
{
DirectInputUninit(hDlg);
LogFileOutput("DirectInputInit: DirectInputUninit()n");
//MessageBox( hDlg, _T("SetCooperativeLevel() returned DIERR_UNSUPPORTED.\n")
// _T("For security reasons, background exclusive mouse\n")
// _T("access is not allowed."),
// _T("Mouse"), MB_OK );
return S_OK;
}
if( FAILED(hr) )
return hr;
if( !bImmediate )
{
// IMPORTANT STEP TO USE BUFFERED DEVICE DATA!
//
// DirectInput uses unbuffered I/O (buffer size = 0) by default.
// If you want to read buffered data, you need to set a nonzero
// buffer size.
//
// Set the buffer size to SAMPLE_BUFFER_SIZE (defined above) elements.
//
// The buffer size is a DWORD property associated with the device.
DIPROPDWORD dipdw;
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = SAMPLE_BUFFER_SIZE; // Arbitary buffer size
hr = g_pMouse->SetProperty( DIPROP_BUFFERSIZE, &dipdw.diph );
LogFileOutput("DirectInputInit: SetProperty(), hr=0x%08X\n", hr);
if (FAILED(hr))
return hr;
}
// Acquire the newly created device
hr = g_pMouse->Acquire();
LogFileOutput("DirectInputInit: Acquire(), hr=0x%08X\n", hr);
if (FAILED(hr))
return hr;
// Setup timer to read mouse position
g_TimerIDEvent = SetTimer(hDlg, IDEVENT_TIMER_MOUSE, 8, NULL); // 120Hz timer
LogFileOutput("DirectInputInit: SetTimer(), id=0x%08X\n", g_TimerIDEvent);
if (g_TimerIDEvent == 0)
return E_FAIL;
return S_OK;
#endif // NO_DIRECT_X
}
//-----------------------------------------------------------------------------
// Name: FreeDirectInput()
// Desc: Initialize the DirectInput variables.
//-----------------------------------------------------------------------------
void DirectInputUninit( HWND hDlg )
{
LogFileOutput("DirectInputUninit\n");
// Unacquire the device one last time just in case
// the app tried to exit while the device is still acquired.
if( g_pMouse )
{
HRESULT hr = g_pMouse->Unacquire();
LogFileOutput("DirectInputUninit: Unacquire(), hr=0x%08X\n", hr);
}
// Release any DirectInput objects.
SAFE_RELEASE( g_pMouse );
SAFE_RELEASE( g_pDI );
if (g_TimerIDEvent)
{
BOOL bRes = KillTimer(hDlg, g_TimerIDEvent);
LogFileOutput("DirectInputUninit: KillTimer(), res=%d\n", bRes ? 1 : 0);
g_TimerIDEvent = 0;
}
}
//-----------------------------------------------------------------------------
// Name: ReadImmediateData()
// Desc: Read the input device's state when in immediate mode and display it.
//-----------------------------------------------------------------------------
HRESULT ReadImmediateData( long* pX, long* pY )
{
HRESULT hr;
DIMOUSESTATE2 dims2; // DirectInput mouse state structure
if (pX) *pX = 0;
if (pY) *pY = 0;
if( NULL == g_pMouse )
return S_OK;
// Get the input's device state, and put the state in dims
ZeroMemory( &dims2, sizeof(dims2) );
hr = g_pMouse->GetDeviceState( sizeof(DIMOUSESTATE2), &dims2 );
if( FAILED(hr) )
{
// DirectInput may be telling us that the input stream has been
// interrupted. We aren't tracking any state between polls, so
// we don't have any special reset that needs to be done.
// We just re-acquire and try again.
// If input is lost then acquire and keep trying
hr = g_pMouse->Acquire();
while( hr == DIERR_INPUTLOST )
hr = g_pMouse->Acquire();
// Update the dialog text
if( hr == DIERR_OTHERAPPHASPRIO ||
hr == DIERR_NOTACQUIRED )
{
//SetDlgItemText( hDlg, IDC_DATA, TEXT("Unacquired") );
}
// hr may be DIERR_OTHERAPPHASPRIO or other errors. This
// may occur when the app is minimized or in the process of
// switching, so just try again later
return S_OK;
}
if (pX) *pX = dims2.lX;
if (pY) *pY = dims2.lY;
return S_OK;
}
}; // namespace DIMouse
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