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58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
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* PROJECT: ReactOS Sound System "MME Buddy" Library
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: lib/drivers/sound/mmebuddy/functiontable.c
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*
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* PURPOSE: Routes function calls through a function table, calling
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* implementation-defined routines or a default function, depending
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* on configuration.
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*
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* PROGRAMMERS: Andrew Greenwood (silverblade@reactos.org)
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*/
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#include "precomp.h"
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/*
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Attaches a function table to a sound device. Any NULL entries in this
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table are automatically set to point to a default routine to handle
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the appropriate function.
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*/
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MMRESULT
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SetSoundDeviceFunctionTable(
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IN PSOUND_DEVICE SoundDevice,
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IN PMMFUNCTION_TABLE FunctionTable)
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{
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VALIDATE_MMSYS_PARAMETER( IsValidSoundDevice(SoundDevice) );
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VALIDATE_MMSYS_PARAMETER( FunctionTable );
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/* Zero out the existing function table (if present) */
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ZeroMemory(&SoundDevice->FunctionTable, sizeof(MMFUNCTION_TABLE));
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if ( ! FunctionTable )
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return MMSYSERR_INVALPARAM;
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/* Fill in the client-supplied functions */
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CopyMemory(&SoundDevice->FunctionTable,
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FunctionTable,
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sizeof(MMFUNCTION_TABLE));
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return MMSYSERR_NOERROR;
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}
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/*
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Retrieves the function table for a sound device, as previously set using
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SetSoundDeviceFunctionTable.
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*/
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MMRESULT
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GetSoundDeviceFunctionTable(
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IN PSOUND_DEVICE SoundDevice,
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OUT PMMFUNCTION_TABLE* FunctionTable)
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{
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VALIDATE_MMSYS_PARAMETER( IsValidSoundDevice(SoundDevice) );
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VALIDATE_MMSYS_PARAMETER( FunctionTable );
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*FunctionTable = &SoundDevice->FunctionTable;
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return MMSYSERR_NOERROR;
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}
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