/*

 * CoreAudioUtils.c

 * Audio Extraction Panel Sample Code

 *

 * Copyright:   ©2005 by Apple Computer, Inc., all rights reserved.

 */

#include "CoreAudioUtils.h"

void ConfigureOutputDescription(ComponentDescription *inOutputDesc)

{

    inOutputDesc->componentType = kAudioUnitType_Output;

    inOutputDesc->componentSubType = kAudioUnitSubType_DefaultOutput;

    inOutputDesc->componentManufacturer = kAudioUnitManufacturer_Apple;

    inOutputDesc->componentFlags = 0;

    inOutputDesc->componentFlagsMask = 0;

}

void ConfigureScheduledPlayerDescription(ComponentDescription *inPlayerDesc)

{

    inPlayerDesc->componentType = kAudioUnitType_Generator;

    inPlayerDesc->componentSubType = kAudioUnitSubType_ScheduledSoundPlayer;

    inPlayerDesc->componentManufacturer = kAudioUnitManufacturer_Apple;

    inPlayerDesc->componentFlags = 0;

    inPlayerDesc->componentFlagsMask = 0;

}   

OSStatus SetOutputUnitStreamFormat (AudioUnit outputUnit, AudioStreamBasicDescription *asbd)

{

    return (AudioUnitSetProperty (outputUnit,

                                    kAudioUnitProperty_StreamFormat,

                                    kAudioUnitScope_Input,

                                    0,/*output*/

                                    asbd, 

                                    sizeof(AudioStreamBasicDescription)));

}

OSStatus SetPlayerUnitStreamFormat (AudioUnit playerUnit, AudioStreamBasicDescription *asbd)

{

    return   (AudioUnitSetProperty (playerUnit,

                                    kAudioUnitProperty_StreamFormat,

                                    kAudioUnitScope_Output,

                                    0,/*output*/

                                    asbd, 

                                    sizeof(AudioStreamBasicDescription)));

}

OSStatus SetOutputUnitChannelLayout(AudioUnit outputUnit, QTPropertyValuePtr layoutProperty, UInt32 size)

{

    return (AudioUnitSetProperty (outputUnit,

                                    kAudioUnitProperty_AudioChannelLayout,

                                    kAudioUnitScope_Input,

                                    0,/*output*/

                                    layoutProperty,

                                    size));

}