MAMETER.C
//==========================================================================;
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright 1993 - 1998 Microsoft Corporation. All Rights Reserved.
//
//--------------------------------------------------------------------------;
//
// mameter.c
//
// Description:
//
//
// History:
// 9/21/93
//
//==========================================================================;
#include <windows.h>
#include <windowsx.h>
#include <mmsystem.h>
#include "muldiv32.h"
#include "mixapp.h"
#include "debug.h"
//
//
//
typedef struct tMACONTROLINSTANCE_METER
{
LPMACONTROLINSTANCE pmaci;
BOOL fSigned;
DWORD dwRange;
MIXERCONTROLDETAILS_SIGNED pmxcd_s[];
} MACONTROLINSTANCE_METER, *PMACONTROLINSTANCE_METER;
//==========================================================================;
//
//
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//
// BOOL MixAppControlChangeMeter
//
// Description:
//
//
// Arguments:
// HWND hwnd:
//
// HMIXER hmx:
//
// DWORD dwControlID:
//
// Return (BOOL):
//
// History:
// 09/22/93
//
//--------------------------------------------------------------------------;
BOOL FNLOCAL MixAppControlChangeMeter
(
HWND hwnd,
HMIXER hmx,
DWORD dwControlID
)
{
MMRESULT mmr;
HWND htxt;
PMACONTROLINSTANCE_METER pmaci_meter;
LPMACONTROLINSTANCE pmaci;
LPMIXERLINE pmxl;
LPMIXERCONTROL pmxctrl;
PMIXERCONTROLDETAILS_SIGNED pmxcd_s;
UINT cChannels;
UINT cMultipleItems;
UINT u;
UINT uIndex;
UINT v;
MIXERCONTROLDETAILS mxcd;
HWND hsbFocus;
HWND hsb;
BOOL fSigned;
DWORD dwRange;
DWORD dwValue;
int nValue;
hsbFocus = GetFocus();
if (NULL == hsbFocus)
{
hsbFocus = GetDlgItem(hwnd, IDD_MACONTROL_MULTICHANNEL_BASE);
}
else
{
uIndex = GetDlgCtrlID(hsbFocus);
if (uIndex < IDD_MACONTROL_MULTICHANNEL_BASE)
{
hsbFocus = GetDlgItem(hwnd, IDD_MACONTROL_MULTICHANNEL_BASE);
}
}
//
//
//
pmaci_meter = (PMACONTROLINSTANCE_METER)(UINT)GetWindowLong(hwnd, DWL_USER);
pmaci = pmaci_meter->pmaci;
pmxl = pmaci->pmxl;
pmxctrl = pmaci->pmxctrl;
pmxcd_s = &pmaci_meter->pmxcd_s[0];
fSigned = pmaci_meter->fSigned;
dwRange = pmaci_meter->dwRange;
cChannels = (UINT)pmxl->cChannels;
if (MIXERCONTROL_CONTROLF_UNIFORM & pmxctrl->fdwControl)
cChannels = 1;
//
//
//
mxcd.cbStruct = sizeof(mxcd);
mxcd.dwControlID = pmxctrl->dwControlID;
mxcd.cChannels = cChannels;
mxcd.cMultipleItems = pmxctrl->cMultipleItems;
mxcd.cbDetails = sizeof(*pmxcd_s);
mxcd.paDetails = pmxcd_s;
mmr = mixerGetControlDetails((HMIXEROBJ)pmaci->hmx, &mxcd, MIXER_GETCONTROLDETAILSF_VALUE);
if (MMSYSERR_NOERROR != mmr)
{
AppMsgBox(hwnd, MB_OK | MB_ICONEXCLAMATION,
"mixerGetControlDetails(ctrlid=%.08lXh) failed on hmx=%.04Xh, mmr=%u!",
pmxctrl->dwControlID, pmaci->hmx, mmr);
return (FALSE);
}
cMultipleItems = 1;
if (MIXERCONTROL_CONTROLF_MULTIPLE & pmxctrl->fdwControl)
cMultipleItems = (UINT)pmxctrl->cMultipleItems;
for (u = 0; u < cChannels; u++)
{
for (v = 0; v < cMultipleItems; v++)
{
uIndex = (u * cMultipleItems) + v;
if (fSigned)
{
dwValue = (DWORD)(pmxcd_s[uIndex].lValue -
pmxctrl->Bounds.lMinimum);
}
else
{
dwValue = (DWORD)pmxcd_s[uIndex].lValue;
dwValue -= pmxctrl->Bounds.dwMinimum;
}
nValue = (int)MulDivRN(dwValue, 32767, dwRange);
//
// Windows is stupid and forces an update to scrollbars
// (a flickering paint) even when the position does not
// change... so don't update if it is already in the
// right position.
//
hsb = GetDlgItem(hwnd, IDD_MACONTROL_MULTICHANNEL_BASE + uIndex);
if (hsbFocus == hsb)
{
htxt = GetDlgItem(hwnd, IDD_MACONTROL_TXT_VALUE);
if (fSigned)
{
AppSetWindowText(htxt, "mapped=%d, lValue=%ld",
nValue,
pmxcd_s[uIndex].lValue);
}
else
{
AppSetWindowText(htxt, "mapped=%d, dwValue=%lu",
nValue,
pmxcd_s[uIndex].lValue);
}
}
if (32767 - nValue == GetScrollPos(hsb, SB_CTL))
continue;
//
// note that we _invert_ the position since a meter will
// increase approaching the top (opposite of scrollbar
// logic)
//
SetScrollPos(hsb, SB_CTL, 32767 - nValue, TRUE);
}
}
//
//
//
mxcd.cbStruct = sizeof(mxcd);
mxcd.dwControlID = pmxctrl->dwControlID;
mxcd.cChannels = 1;
mxcd.cMultipleItems = pmxctrl->cMultipleItems;
mxcd.cbDetails = sizeof(*pmxcd_s);
mxcd.paDetails = pmxcd_s;
mmr = mixerGetControlDetails((HMIXEROBJ)pmaci->hmx, &mxcd, MIXER_GETCONTROLDETAILSF_VALUE);
if (MMSYSERR_NOERROR != mmr)
{
AppMsgBox(hwnd, MB_OK | MB_ICONEXCLAMATION,
"mixerGetControlDetails(ctrlid=%.08lXh) failed on hmx=%.04Xh, mmr=%u!",
pmxctrl->dwControlID, pmaci->hmx, mmr);
return (FALSE);
}
for (v = 0; v < cMultipleItems; v++)
{
uIndex = v;
if (fSigned)
{
dwValue = (DWORD)(pmxcd_s[uIndex].lValue -
pmxctrl->Bounds.lMinimum);
}
else
{
dwValue = (DWORD)pmxcd_s[uIndex].lValue;
dwValue -= pmxctrl->Bounds.dwMinimum;
}
nValue = (int)MulDivRN(dwValue, 32767, dwRange);
hsb = GetDlgItem(hwnd, IDD_MACONTROL_UNIFORM_BASE + uIndex);
if (hsbFocus == hsb)
{
htxt = GetDlgItem(hwnd, IDD_MACONTROL_TXT_VALUE);
if (fSigned)
{
AppSetWindowText(htxt, "mapped=%d, lValue=%ld",
nValue,
pmxcd_s[uIndex].lValue);
}
else
{
AppSetWindowText(htxt, "mapped=%d, dwValue=%lu",
nValue,
pmxcd_s[uIndex].lValue);
}
}
if (32767 - nValue == GetScrollPos(hsb, SB_CTL))
continue;
//
// note that we _invert_ the position since a meter will
// increase approaching the top (opposite of scrollbar
// logic)
//
SetScrollPos(hsb, SB_CTL, 32767 - nValue, TRUE);
}
return (TRUE);
} // MixAppControlChangeMeter()
//--------------------------------------------------------------------------;
//
// BOOL MixAppLineChangeMeter
//
// Description:
//
//
// Arguments:
// HWND hwnd:
//
// HMIXER hmx:
//
// DWORD dwLineID:
//
// Return (BOOL):
//
// History:
// 09/24/93
//
//--------------------------------------------------------------------------;
BOOL FNLOCAL MixAppLineChangeMeter
(
HWND hwnd,
HMIXER hmx,
DWORD dwLineID
)
{
MMRESULT mmr;
PMACONTROLINSTANCE_METER pmaci_meter;
LPMACONTROLINSTANCE pmaci;
LPMIXERLINE pmxl;
MIXERLINE mxl;
BOOL fSource;
BOOL fActive;
BOOL fDisconnected;
HWND htxt;
//
//
//
pmaci_meter = (PMACONTROLINSTANCE_METER)(UINT)GetWindowLong(hwnd, DWL_USER);
pmaci = pmaci_meter->pmaci;
pmxl = pmaci->pmxl;
if (pmxl->dwLineID != dwLineID)
{
DPF(0, "!MixAppLineChangeMeter: why am i getting notifications for some other line??");
//
// this would be a bug in this app... keep from bombing though
// until i fix it.
//
dwLineID = pmxl->dwLineID;
}
//
// get the current state of the line that changed.. this is actually
// silly that you have to do this just to determine if the line went
// [in]active. sigh..
//
mxl.cbStruct = sizeof(mxl);
mxl.dwLineID = dwLineID;
mmr = mixerGetLineInfo((HMIXEROBJ)ghmx, &mxl, MIXER_GETLINEINFOF_LINEID);
if (MMSYSERR_NOERROR != mmr)
{
AppMsgBox(hwnd, MB_OK | MB_ICONEXCLAMATION,
"mixerGetLineInfo(lineid=%.08lXh) failed on hmx=%.04Xh, mmr=%u!",
dwLineID, ghmx, mmr);
return (FALSE);
}
fSource = (0 != (MIXERLINE_LINEF_SOURCE & mxl.fdwLine));
fActive = (0 != (MIXERLINE_LINEF_ACTIVE & mxl.fdwLine));
fDisconnected = (0 != (MIXERLINE_LINEF_DISCONNECTED & mxl.fdwLine));
htxt = GetDlgItem(hwnd, IDD_MACONTROL_TXT_LINEINFO);
AppSetWindowText(htxt, "(%s), '%s', %s, %s",
fSource ? (LPSTR)"src" : (LPSTR)"DST",
(LPSTR)mxl.szShortName,
fActive ? (LPSTR)"ACTIVE" : (LPSTR)"inactive",
fDisconnected ? (LPSTR)"DISCONNECTED" : (LPSTR)"connected");
return (fActive);
} // MixAppLineChangeMeter()
//--------------------------------------------------------------------------;
//
// BOOL MixAppInitDialogMeter
//
// Description:
//
//
// Arguments:
// HWND hwnd:
//
// HWND hwndFocus:
//
// LPARAM lParam:
//
// Return (BOOL):
//
// History:
// 09/22/93
//
//--------------------------------------------------------------------------;
BOOL FNLOCAL MixAppInitDialogMeter
(
HWND hwnd,
HWND hwndFocus,
LPARAM lParam
)
{
#define FSB_DEF_STYLE (WS_VISIBLE | WS_CHILD | SBS_VERT | WS_TABSTOP)
static TCHAR szScrollBar[] = TEXT("scrollbar");
static TCHAR szTitle[] = TEXT("Meter Class: '%s'");
TCHAR szControlType[64];
LPMACONTROLINSTANCE pmaci;
PMACONTROLINSTANCE_METER pmaci_meter;
LPMIXERLINE pmxl;
LPMIXERCONTROL pmxctrl;
HWND htxt;
UINT u;
UINT v;
HWND hsb;
RECT rcM;
RECT rcU;
int cxvsb;
UINT cb;
UINT cChannels;
UINT cMultipleItems;
UINT uIndex;
DWORD dwRange;
BOOL fSigned;
//
//
//
pmaci = (LPMACONTROLINSTANCE)lParam;
if (NULL == pmaci)
{
DPF(0, "!MixAppInitDialogMeter: pmaci passed in lParam is NULL!?!");
return (FALSE);
}
pmxl = pmaci->pmxl;
pmxctrl = pmaci->pmxctrl;
if (!MixAppGetControlTypeName(pmxctrl, szControlType))
{
return (FALSE);
}
//
//
//
switch (pmxctrl->dwControlType)
{
case MIXERCONTROL_CONTROLTYPE_SIGNEDMETER:
case MIXERCONTROL_CONTROLTYPE_PEAKMETER:
case MIXERCONTROL_CONTROLTYPE_UNSIGNEDMETER:
break;
default:
DPF(0, "!MixAppInitDialogMeter: pmxctrl->dwControlType=%.08lXh not valid meter!", pmxctrl->dwControlType);
return (FALSE);
}
fSigned = (MIXERCONTROL_CT_UNITS_SIGNED == (MIXERCONTROL_CT_UNITS_MASK & pmxctrl->dwControlType));
//
//
//
AppSetWindowText(hwnd, szTitle, (LPTSTR)szControlType);
SetDlgItemText(hwnd, IDD_MACONTROL_TXT_SHORT_NAME, pmxctrl->szShortName);
SetDlgItemText(hwnd, IDD_MACONTROL_TXT_LONG_NAME, pmxctrl->szName);
htxt = GetDlgItem(hwnd, IDD_MACONTROL_TXT_BOUNDS);
if (fSigned)
{
AppSetWindowText(htxt, "lMinimum=%ld, lMaximum=%ld",
pmxctrl->Bounds.lMinimum,
pmxctrl->Bounds.lMaximum);
dwRange = (pmxctrl->Bounds.lMaximum - pmxctrl->Bounds.lMinimum);
}
else
{
AppSetWindowText(htxt, "dwMinimum=%lu, dwMaximum=%lu",
pmxctrl->Bounds.dwMinimum,
pmxctrl->Bounds.dwMaximum);
dwRange = (pmxctrl->Bounds.dwMaximum - pmxctrl->Bounds.dwMinimum);
}
htxt = GetDlgItem(hwnd, IDD_MACONTROL_TXT_METRICS);
AppSetWindowText(htxt, "dwRange=%lu",
dwRange);
//
//
//
cChannels = (UINT)pmxl->cChannels;
if (MIXERCONTROL_CONTROLF_UNIFORM & pmxctrl->fdwControl)
cChannels = 1;
cMultipleItems = 1;
if (MIXERCONTROL_CONTROLF_MULTIPLE & pmxctrl->fdwControl)
cMultipleItems = (UINT)pmxctrl->cMultipleItems;
cb = sizeof(*pmaci_meter);
cb += cChannels * cMultipleItems * sizeof(pmaci_meter->pmxcd_s[0]);
pmaci_meter = (PMACONTROLINSTANCE_METER)LocalAlloc(LPTR, cb);
if (NULL == pmaci_meter)
{
DPF(0, "!MixAppInitDialogMeter: failed trying to alloc %u bytes for control instance!", cb);
return (FALSE);
}
//
//
//
SetWindowLong(hwnd, DWL_USER, (LPARAM)(UINT)pmaci_meter);
pmaci_meter->pmaci = pmaci;
pmaci_meter->fSigned = fSigned;
pmaci_meter->dwRange = dwRange;
//
//
//
//
cxvsb = GetSystemMetrics(SM_CXVSCROLL);
hsb = GetDlgItem(hwnd, IDD_MACONTROL_GRP_MULTICHANNEL);
GetWindowRect(hsb, &rcM);
InflateRect(&rcM, -10, -20);
ScreenToClient(hwnd, (LPPOINT)&rcM.left);
ScreenToClient(hwnd, (LPPOINT)&rcM.right);
rcM.right = rcM.left + cxvsb;
for (u = 0; u < cChannels; u++)
{
for (v = 0; v < cMultipleItems; v++)
{
uIndex = (u * cMultipleItems) + v;
hsb = CreateWindow(szScrollBar, gszNull, FSB_DEF_STYLE,
rcM.left, rcM.top,
rcM.right - rcM.left,
rcM.bottom - rcM.top,
hwnd, (HMENU)(IDD_MACONTROL_MULTICHANNEL_BASE + uIndex),
ghinst, NULL);
SetScrollRange(hsb, SB_CTL, 0, 32767, FALSE);
rcM.left += cxvsb + 4;
rcM.right += cxvsb + 4;
}
//
// add more separation between channels
//
rcM.left += cxvsb;
rcM.right += cxvsb;
}
//
//
//
//
hsb = GetDlgItem(hwnd, IDD_MACONTROL_GRP_UNIFORM);
GetWindowRect(hsb, &rcU);
InflateRect(&rcU, -10, -20);
ScreenToClient(hwnd, (LPPOINT)&rcU.left);
ScreenToClient(hwnd, (LPPOINT)&rcU.right);
rcU.right = rcU.left + cxvsb;
for (v = 0; v < cMultipleItems; v++)
{
hsb = CreateWindow(szScrollBar, gszNull, FSB_DEF_STYLE,
rcU.left, rcU.top,
rcU.right - rcU.left,
rcU.bottom - rcU.top,
hwnd, (HMENU)(IDD_MACONTROL_UNIFORM_BASE + v),
ghinst, NULL);
SetScrollRange(hsb, SB_CTL, 0, 32767, FALSE);
rcU.left += cxvsb + 4;
rcU.right += cxvsb + 4;
}
//
//
//
SendMessage(hwnd,
MM_MIXM_LINE_CHANGE,
(WPARAM)pmaci->hmx,
pmxl->dwLineID);
SendMessage(hwnd,
MM_MIXM_CONTROL_CHANGE,
(WPARAM)pmaci->hmx,
pmxctrl->dwControlID);
return (TRUE);
} // MixAppInitDialogMeter()
//==========================================================================;
//
//
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//
// BOOL MixAppDlgProcControlMeter
//
// Description:
//
//
// Arguments:
// HWND hwnd:
//
// UINT uMsg:
//
// WPARAM wParam:
//
// LPARAM lParam:
//
// Return (BOOL):
//
// History:
// 07/22/93
//
//--------------------------------------------------------------------------;
BOOL CALLBACK MixAppDlgProcControlMeter
(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
)
{
static BOOL fTimerActive;
LRESULT lr;
HLOCAL hl;
UINT uId;
BOOL fLineActive;
//
//
//
switch (uMsg)
{
case WM_INITDIALOG:
fTimerActive = FALSE;
lr = HANDLE_WM_INITDIALOG(hwnd, wParam, lParam, MixAppInitDialogMeter);
if (FALSE == lr)
{
EndDialog(hwnd, FALSE);
}
else
{
ghdlgControl = hwnd;
}
return (TRUE);
case MM_MIXM_LINE_CHANGE:
fLineActive = MixAppLineChangeMeter(hwnd, (HMIXER)wParam, lParam);
if (fLineActive)
{
if (!fTimerActive)
{
fTimerActive = (0 != SetTimer(hwnd, 1, 100, NULL));
}
}
else
{
if (fTimerActive)
{
KillTimer(hwnd, 1);
fTimerActive = FALSE;
}
}
return (TRUE);
case WM_TIMER:
case MM_MIXM_CONTROL_CHANGE:
MixAppControlChangeMeter(hwnd, (HMIXER)wParam, lParam);
return (TRUE);
case WM_COMMAND:
uId = GET_WM_COMMAND_ID(wParam, lParam);
switch (uId)
{
case IDCANCEL:
case IDOK:
if (fTimerActive)
{
KillTimer(hwnd, 1);
fTimerActive = FALSE;
}
hl = (HLOCAL)(UINT)GetWindowLong(hwnd, DWL_USER);
LocalFree(hl);
EndDialog(hwnd, TRUE);
ghdlgControl = NULL;
break;
}
break;
}
return (FALSE);
} // MixAppDlgProcControlMeter()