/*
 * Copyright (c) 1998-2008 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
 
#ifndef _APPLEUSBAUDIOMUTECONTROL_H
#define _APPLEUSBAUDIOMUTECONTROL_H

#include <sys/cdefs.h>

__BEGIN_DECLS
#include <kern/thread_call.h>
__END_DECLS

#include <libkern/OSByteOrder.h>

#include <IOKit/IOLib.h>

#include <IOKit/usb/USB.h>
#include <IOKit/usb/IOUSBInterface.h>

#include <IOKit/audio/IOAudioDefines.h>
#include <IOKit/audio/IOAudioTypes.h>
#include <IOKit/audio/IOAudioToggleControl.h>

#include "AppleUSBAudioCommon.h"
#include "AppleUSBAudioDictionary.h"

class AppleUSBAudioDevice;
typedef struct call_entry *thread_call_t;

typedef IOReturn (*USBDeviceRequest)(IOUSBDevRequest * request, void * refCon, IOUSBCompletion * completion);

class AppleUSBAudioMuteControl : public IOAudioToggleControl
{
    OSDeclareDefaultStructors (AppleUSBAudioMuteControl);

    UInt8					mUnitID;
    UInt8					mInterfaceNumber;
    UInt8					mChannelNumber;
    thread_call_t			mSetValueThreadCall;
    USBDeviceRequest		mUSBDeviceRequest;
	void *					mCallerRefCon;

public:
    static AppleUSBAudioMuteControl *create (UInt8 theUnit, UInt8 theInterfaceNumber, UInt8 theChannelNumber, USBDeviceRequest theUSBDeviceRequest, void *theCallerRefCon, UInt32 usage, UInt32 subType = kIOAudioToggleControlSubTypeMute, UInt32 controlID = 0);

    virtual bool init (UInt8 theUnit, UInt8 theInterfaceNumber, UInt8 theChannelNumber, USBDeviceRequest theUSBDeviceRequest, void *theCallerRefCon, UInt32 usage, UInt32 subType, UInt32 controlID = 0, OSDictionary *properties = NULL);
    virtual void free ();

    virtual IOReturn performValueChange (OSObject * newValue);
    virtual void updateUSBValue ();
    virtual void updateUSBValue (SInt32 newValue);

    static void updateValueCallback (void *arg1, void *arg2);

private:
	UInt8		GetCurMute (UInt8 interfaceNumber, UInt8 channelNumber, IOReturn * error);
	IOReturn	SetCurMute (UInt8 interfaceNumber, UInt8 channelNumber, UInt8 theMuteState);
};

#endif