MMRESULT DestroySoundDeviceInstance ( IN PSOUND_DEVICE_INSTANCE SoundDeviceInstance )

Definition at line 241 of file deviceinstance.c.

Referenced by DestroyAllSoundDeviceInstances(), and MmeCloseDevice().

{
    MMRESULT Result;
    PMMFUNCTION_TABLE FunctionTable;
    PSOUND_DEVICE SoundDevice;
    PVOID Handle;

    SND_TRACE(L"Destroying a sound device instance\n");

    VALIDATE_MMSYS_PARAMETER( IsValidSoundDeviceInstance(SoundDeviceInstance) );

    Result = GetSoundDeviceFromInstance(SoundDeviceInstance, &SoundDevice);
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);

    Result = GetSoundDeviceInstanceHandle(SoundDeviceInstance, &Handle);
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);

    /* Get the "close" routine from the function table, and validate it */
    Result = GetSoundDeviceFunctionTable(SoundDevice, &FunctionTable);
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);

    SND_ASSERT( FunctionTable->Close );
    if ( FunctionTable->Close == NULL )
    {
        /* This indicates bad practice, really! If you can open, why not close?! */
        return MMSYSERR_NOTSUPPORTED;
    }

    /* Stop the streaming thread */
    if ( SoundDeviceInstance->Thread )
    {
        Result = DestroySoundThread(SoundDeviceInstance->Thread);
        SND_ASSERT( MMSUCCESS(Result) );    /* It should succeed! */
        if ( ! MMSUCCESS(Result ) )
        {
            return TranslateInternalMmResult(Result);
        }
    }

    /* Blank this out here */
    SoundDeviceInstance->Thread = NULL;

    /* Try and close the device */
    Result = FunctionTable->Close(SoundDeviceInstance, Handle);
    SND_ASSERT( MMSUCCESS(Result) );    /* It should succeed! */
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);

    /* Drop it from the list */
    Result = UnlistSoundDeviceInstance(SoundDeviceInstance);
    SND_ASSERT( MMSUCCESS(Result) );    /* It should succeed! */
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);

    FreeSoundDeviceInstance(SoundDeviceInstance);

    return MMSYSERR_NOERROR;
}

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