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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
#ifndef AUDDFUNCTIONDRIVER_H
#define AUDDFUNCTIONDRIVER_H
//-----------------------------------------------------------------------------
// Headers
//-----------------------------------------------------------------------------
#include <usb/common/core/USBGenericRequest.h>
#include <usb/device/core/USBD.h>
//-----------------------------------------------------------------------------
// Definitions
//-----------------------------------------------------------------------------
/// Sample rate in Hz.
#define AUDD_SAMPLERATE 48000
/// Number of channels in audio stream.
#define AUDD_NUMCHANNELS 2
/// Number of bytes in one sample.
#define AUDD_BYTESPERSAMPLE 2
/// Number of bits in one sample.
#define AUDD_BITSPERSAMPLE (AUDD_BYTESPERSAMPLE * 8)
/// Number of samples in one USB subframe.
#define AUDD_BYTESPERSUBFRAME (AUDD_NUMCHANNELS * AUDD_BYTESPERSAMPLE)
/// Number of samples in one USB frame.
#define AUDD_SAMPLESPERFRAME (AUDD_SAMPLERATE / 1000 * AUDD_NUMCHANNELS)
/// Number of bytes in one USB frame.
#define AUDD_BYTESPERFRAME (AUDD_SAMPLESPERFRAME * AUDD_BYTESPERSAMPLE)
/// Master channel.
#define AUDD_MASTERCHANNEL 0
/// Front left channel.
#define AUDD_LEFTCHANNEL 1
/// Front right channel.
#define AUDD_RIGHTCHANNEL 2
//-----------------------------------------------------------------------------
// Structs
//-----------------------------------------------------------------------------
/// AUDIO Speaker channel struct
typedef struct {
unsigned char number;
unsigned char muted;
} AUDDSpeakerChannel;
//-----------------------------------------------------------------------------
// Callbacks
//-----------------------------------------------------------------------------
extern void AUDDSpeakerChannel_MuteChanged(AUDDSpeakerChannel *channel,
unsigned char muted);
extern void AUDDFunctionCallbacks_InterfaceSettingChanged(
unsigned char interface,
unsigned char setting);
//-----------------------------------------------------------------------------
// Exported functions
//-----------------------------------------------------------------------------
//- Function API For composite device
extern void AUDDFunctionDriver_Initialize();
extern unsigned char AUDDFunctionDriver_RequestHandler(
const USBGenericRequest * request);
//- AUDIO Speaker API
extern unsigned char AUDDSpeakerDriver_Read(void *buffer,
unsigned int length,
TransferCallback callback,
void *argument);
#endif // #define AUDDFUNCTIONDRIVER_H
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