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64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/*
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ReactOS Sound System
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Sound Blaster DSP support
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Speaker commands
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Author:
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Andrew Greenwood (silverblade@reactos.org)
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History:
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2 July 2008 - Created (split from sbdsp.c)
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Notes:
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Functions documented in sbdsp.h
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*/
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#include "precomp.h"
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NTSTATUS
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SbDspEnableSpeaker(
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IN PUCHAR BasePort,
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IN ULONG Timeout)
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{
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return SbDspWrite(BasePort, SB_DSP_SPEAKER_ON, Timeout);
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}
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NTSTATUS
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SbDspDisableSpeaker(
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IN PUCHAR BasePort,
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IN ULONG Timeout)
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{
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return SbDspWrite(BasePort, SB_DSP_SPEAKER_OFF, Timeout);
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}
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/*
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VirtualBox doesn't seem to support this.
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*/
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NTSTATUS
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SbDspIsSpeakerEnabled(
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IN PUCHAR BasePort,
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OUT PBOOLEAN IsEnabled,
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IN ULONG Timeout)
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{
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NTSTATUS Status;
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UCHAR SpeakerStatus = 0;
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if ( ! IsEnabled )
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return STATUS_INVALID_PARAMETER_2;
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/* Request the speaker status */
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Status = SbDspWrite(BasePort, SB_DSP_SPEAKER_STATUS, Timeout);
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if ( Status != STATUS_SUCCESS )
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return Status;
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/* Obtain the status */
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Status = SbDspRead(BasePort, &SpeakerStatus, Timeout);
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if ( Status != STATUS_SUCCESS )
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return Status;
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DbgPrint("SBDSP - SpeakerStatus is %02x\n", SpeakerStatus);
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*IsEnabled = (SpeakerStatus == 0xFF);
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return STATUS_SUCCESS;
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}
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