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108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/*
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Multimedia
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* FILE: lib/mmdrv/auxil.c
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* PURPOSE: Multimedia User Mode Driver
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* PROGRAMMER: Andrew Greenwood
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* Aleksey Bragin
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* UPDATE HISTORY:
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* Mar 16, 2004: Created skeleton implementation
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*/
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#include "mmdrv.h"
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#define NDEBUG
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#include <debug.h>
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#include "wave.h"
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APIENTRY DWORD auxMessage(UINT dwId,
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UINT uMessage,
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DWORD dwUser,
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DWORD dwParam1,
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DWORD dwParam2)
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{
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MMRESULT Result;
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AUX_DD_VOLUME Volume;
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DPRINT("auxMessage\n");
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// the following cases are documented by DDK
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switch (uMessage)
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{
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case AUXDM_GETDEVCAPS:
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DPRINT("AUXDM_GETDEVCAPS");
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return GetDeviceCapabilities(dwId, AuxDevice, (LPBYTE)dwParam1, (DWORD)dwParam2);
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case AUXDM_GETNUMDEVS:
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DPRINT("AUXDM_GETNUMDEVS");
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return GetDeviceCount(AuxDevice);
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case AUXDM_GETVOLUME:
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DPRINT("AUXDM_GETVOLUME");
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Result = AuxGetAudio(dwId, (PBYTE) &Volume, sizeof(Volume));
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if (Result == MMSYSERR_NOERROR)
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{
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*(LPDWORD)dwParam1 = (DWORD)MAKELONG(HIWORD(Volume.Left), HIWORD(Volume.Right));
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}
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return Result;
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case AUXDM_SETVOLUME:
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DPRINT("AUXDM_SETVOLUME");
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Volume.Right = HIWORD(dwParam1) << 16;
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Volume.Left = LOWORD(dwParam1) << 16;
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return AuxSetAudio(dwId, (PBYTE)&Volume, sizeof(Volume));
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}
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return MMSYSERR_NOERROR;
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}
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DWORD AuxGetAudio(DWORD dwID, PBYTE pVolume, DWORD sizeVolume)
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{
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HANDLE DeviceHandle;
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MMRESULT Result;
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DWORD BytesReturned;
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Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
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if (Result != MMSYSERR_NOERROR)
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return Result;
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Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_GET_VOLUME, NULL, 0, (LPVOID)pVolume, sizeVolume,
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&BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
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CloseHandle(DeviceHandle);
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return Result;
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}
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DWORD AuxSetAudio(DWORD dwID, PBYTE pVolume, DWORD sizeVolume)
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{
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HANDLE DeviceHandle;
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MMRESULT Result;
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DWORD BytesReturned;
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Result = OpenDevice(AuxDevice, dwID, &DeviceHandle, GENERIC_READ);
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if (Result != MMSYSERR_NOERROR)
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return Result;
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Result = DeviceIoControl(DeviceHandle, IOCTL_AUX_SET_VOLUME, (LPVOID)pVolume, sizeVolume, NULL, 0,
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&BytesReturned, NULL) ? MMSYSERR_NOERROR : TranslateStatus();
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CloseHandle(DeviceHandle);
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return Result;
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}
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