104 lines
2.1 KiB
C
104 lines
2.1 KiB
C
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/****************************************************************************
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Copyright (c) 1993 Media Vision Inc. All Rights Reserved
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Module Name:
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volume.c
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Abstract:
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This module contains code for the Volume settings of the
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OPL3 FM Midi Synthesiser device and MV-508 Mixer
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Author:
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Evan Aurand 03-23-93
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Environment:
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Kernel mode
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Revision History:
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*****************************************************************************/
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#include "sound.h"
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/****************************************************************************
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HwSetVolume()
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Routine Description :
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Set the volume for the OPL3 via the MV508 mixer
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Arguments :
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pLDI - pointer to device data
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Return Value :
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None
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****************************************************************************/
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VOID HwSetVolume( IN PLOCAL_DEVICE_INFO pLDI )
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{
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/***** Local Variables *****/
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PSOUND_HARDWARE pHw;
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WAVE_DD_VOLUME Volume;
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PGLOBAL_DEVICE_INFO pGDI;
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UCHAR OutputMixer;
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UCHAR InputNumber;
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USHORT LeftVolume;
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USHORT RightVolume;
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/***** Start *****/
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DbgPrintf3(("HwSetVolume(): Start - Device Index = %8XH", pLDI->DeviceIndex));
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pHw = pLDI->HwContext;
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Volume = pLDI->Volume;
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pGDI = CONTAINING_RECORD(pHw, GLOBAL_DEVICE_INFO, Hw);
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//
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// Set the Input and Out values
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//
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InputNumber = IN_SYNTHESIZER;
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// OutputMixer = OUT_PCM;
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OutputMixer = OUT_AMPLIFIER;
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//
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// Adjust the Volumes
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//
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LeftVolume = (USHORT)(Volume.Left >> 16);
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DbgPrintf2(("HwSetVolume(): Left Volume = %XH", LeftVolume));
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RightVolume = (USHORT)(Volume.Right >> 16);
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DbgPrintf2(("HwSetVolume(): Right Volume = %XH", RightVolume));
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//
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// Set the Volume
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// FM - route to Input Mixer B
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//
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SetInput( pGDI,
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InputNumber,
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LeftVolume,
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_LEFT,
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MIXCROSSCAPS_NORMAL_STEREO,
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OutputMixer );
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SetInput( pGDI,
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InputNumber,
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RightVolume,
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_RIGHT,
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MIXCROSSCAPS_NORMAL_STEREO,
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OutputMixer );
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} // End HwSetVolume()
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/************************************ END ***********************************/
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