auxil.c File Reference

#include "mmdrv.h"
#include <debug.h>
#include "wave.h"

Include dependency graph for auxil.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
APIENTRY DWORD	auxMessage (UINT dwId, UINT uMessage, DWORD dwUser, DWORD dwParam1, DWORD dwParam2)
DWORD	AuxGetAudio (DWORD dwID, PBYTE pVolume, DWORD sizeVolume)
DWORD	AuxSetAudio (DWORD dwID, PBYTE pVolume, DWORD sizeVolume)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 15 of file auxil.c.

Function Documentation

AuxGetAudio()

DWORD AuxGetAudio	(	DWORD	dwID,
		PBYTE	pVolume,
		DWORD	sizeVolume
	)

Definition at line 69 of file auxil.c.

{
    HANDLE DeviceHandle;
    MMRESULT Result;
    DWORD BytesReturned;
 
    Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
    if (Result != MMSYSERR_NOERROR)
         return Result;
 
 
    Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_GET_VOLUME, NULL, 0, (LPVOID)pVolume, sizeVolume,
                           &BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
 
 
    CloseHandle(DeviceHandle);
 
    return Result;
 }

Referenced by auxMessage().

auxMessage()

APIENTRY DWORD auxMessage	(	UINT	dwId,
		UINT	uMessage,
		DWORD	dwUser,
		DWORD	dwParam1,
		DWORD	dwParam2
	)

Definition at line 20 of file auxil.c.

{
    MMRESULT Result;
    AUX_DD_VOLUME Volume;
 
    DPRINT("auxMessage\n");
 
 
    // the following cases are documented by DDK
    switch (uMessage)
    {
    case AUXDM_GETDEVCAPS:
        DPRINT("AUXDM_GETDEVCAPS");
        return GetDeviceCapabilities(dwId, AuxDevice, (LPBYTE)dwParam1, (DWORD)dwParam2);
 
    case AUXDM_GETNUMDEVS:
        DPRINT("AUXDM_GETNUMDEVS");
        return GetDeviceCount(AuxDevice);
 
    case AUXDM_GETVOLUME:
         DPRINT("AUXDM_GETVOLUME");
         Result = AuxGetAudio(dwId, (PBYTE) &Volume, sizeof(Volume));
 
         if (Result == MMSYSERR_NOERROR)
         {
            *(LPDWORD)dwParam1 = (DWORD)MAKELONG(HIWORD(Volume.Left), HIWORD(Volume.Right));
         }
         return Result;
 
 
    case AUXDM_SETVOLUME:
        DPRINT("AUXDM_SETVOLUME");
 
        Volume.Right = HIWORD(dwParam1) << 16;
        Volume.Left = LOWORD(dwParam1) << 16;
 
        return AuxSetAudio(dwId, (PBYTE)&Volume, sizeof(Volume));
 
    }
 
    return MMSYSERR_NOERROR;
}

Referenced by MMDRV_Install().

AuxSetAudio()

DWORD AuxSetAudio	(	DWORD	dwID,
		PBYTE	pVolume,
		DWORD	sizeVolume
	)

Definition at line 89 of file auxil.c.

{
    HANDLE DeviceHandle;
    MMRESULT Result;
    DWORD BytesReturned;
 
    Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
    if (Result != MMSYSERR_NOERROR)
         return Result;
 
    Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_SET_VOLUME, (LPVOID)pVolume, sizeVolume, NULL, 0,
                           &BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
 
 
    CloseHandle(DeviceHandle);
 
    return Result;
 }

Referenced by auxMessage().