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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.
* ----------------------------------------------------------------------------
*/
/**
\unit
!Purpose
Definition of a USB Audio Speaker Driver with two playback channels and one
record channel.
!Usage
-# Enable and setup USB related pins (see pio & board.h).
-# Configure the USB Audio Speaker driver using
AUDDSpeakerDriver_Initialize
-# To get %audio stream frames from host, use
AUDDSpeakerDriver_Read
-# To send %audio sampling stream to host, use
AUDDSpeakerDriver_Write
*/
#ifndef AUDDSPEAKERDRIVER_H
#define AUDDSPEAKERDRIVER_H
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include <board.h>
#include <usb/common/core/USBGenericRequest.h>
#include <usb/device/core/USBD.h>
//------------------------------------------------------------------------------
// Definitions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// \page "Audio Speaker stream information"
///
/// This page lists codes for USB Audio Speaker stream information.
///
/// !Code
/// - AUDDSpeakerDriver_SAMPLERATE
/// - AUDDSpeakerDriver_NUMCHANNELS
/// - AUDDSpeakerDriver_BYTESPERSAMPLE
/// - AUDDSpeakerDriver_BITSPERSAMPLE
/// - AUDDSpeakerDriver_SAMPLESPERFRAME
/// - AUDDSpeakerDriver_BYTESPERFRAME
#if defined(at91sam7s)
/// Sample rate in Hz.
#define AUDDSpeakerDriver_SAMPLERATE 32000
/// Number of channels in audio stream.
#define AUDDSpeakerDriver_NUMCHANNELS 1
/// Number of bytes in one sample.
#define AUDDSpeakerDriver_BYTESPERSAMPLE 2
#else
/// Sample rate in Hz.
#define AUDDSpeakerDriver_SAMPLERATE 48000
/// Number of channels in audio stream.
#define AUDDSpeakerDriver_NUMCHANNELS 2
/// Number of bytes in one sample.
#define AUDDSpeakerDriver_BYTESPERSAMPLE 2
#endif
/// Number of bits in one sample.
#define AUDDSpeakerDriver_BITSPERSAMPLE (AUDDSpeakerDriver_BYTESPERSAMPLE * 8)
/// Number of bytes in one USB subframe.
#define AUDDSpeakerDriver_BYTESPERSUBFRAME (AUDDSpeakerDriver_NUMCHANNELS * \
AUDDSpeakerDriver_BYTESPERSAMPLE)
/// Number of samples in one USB frame.
#define AUDDSpeakerDriver_SAMPLESPERFRAME (AUDDSpeakerDriver_SAMPLERATE / 1000 \
* AUDDSpeakerDriver_NUMCHANNELS)
/// Number of bytes in one USB frame.
#define AUDDSpeakerDriver_BYTESPERFRAME (AUDDSpeakerDriver_SAMPLESPERFRAME * \
AUDDSpeakerDriver_BYTESPERSAMPLE)
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// \page "Audio Speaker Channel Numbers"
///
/// This page lists codes for USB Audio Speaker channel numbers.
///
/// !Playback channel numbers
/// - AUDDSpeakerDriver_MASTERCHANNEL
/// - AUDDSpeakerDriver_LEFTCHANNEL
/// - AUDDSpeakerDriver_RIGHTCHANNEL
///
/// !Record channel number
/// - AUDDSpeakerDriver_RECCHANNEL
/// Master channel of playback.
#define AUDDSpeakerDriver_MASTERCHANNEL 0
/// Front left channel of playback.
#define AUDDSpeakerDriver_LEFTCHANNEL 1
/// Front right channel of playback.
#define AUDDSpeakerDriver_RIGHTCHANNEL 2
/// Channel of record.
#define AUDDSpeakerDriver_RECCHANNEL 0
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
extern void AUDDSpeakerDriver_Initialize();
extern void AUDDSpeakerDriver_RequestHandler(const USBGenericRequest *request);
extern unsigned char AUDDSpeakerDriver_Read(void *buffer,
unsigned int length,
TransferCallback callback,
void *argument);
#endif //#ifndef AUDDSPEAKERDRIVER_H
//#ifndef SPEAKER_DRIVER_H
//#define SPEAKER_DRIVER_H
//
////------------------------------------------------------------------------------
//// Definitions
////------------------------------------------------------------------------------
//
///*! Sampling frequency in Hz */
//#define SPEAKER_SAMPLERATE 48000
///*! Number of samples in one isochronous packet (1ms frame) */
//#define SPEAKER_SAMPLESPERPACKET (SPEAKER_SAMPLERATE / 1000)
///*! Size of one sample (in bytes) */
//#define SPEAKER_SAMPLESIZE 2
///*! Number of channels */
//#define SPEAKER_NUMCHANNELS 2
///*! Size of one frame (number of bytes sent for one sample on all channels) */
//#define SPEAKER_FRAMESIZE (SPEAKER_SAMPLESIZE * SPEAKER_NUMCHANNELS)
///*! Required bit rate given the sample frequency, sample size and number of
// channels. */
//#define SPEAKER_BITRATE (SPEAKER_SAMPLERATE * SPEAKER_FRAMESIZE)
///*! Size of one isochronous packet */
//#define SPEAKER_PACKETSIZE (SPEAKER_SAMPLESPERPACKET * SPEAKER_FRAMESIZE)
//
////------------------------------------------------------------------------------
//// Structures
////------------------------------------------------------------------------------
///*!
// Holds the speaker driver state.
// */
//typedef struct {
//
// S_std_class standardDriver;
//
// unsigned char isOutStreamEnabled;
// unsigned char isChannelMuted[SPEAKER_NUMCHANNELS+1];
//
// Callback_f outStreamStatusChanged;
// Callback_f outStreamMuteChanged;
//
//} __attribute__((packed)) S_speaker;
//
////------------------------------------------------------------------------------
//// Exported functions
////------------------------------------------------------------------------------
//
//extern void SPK_Init(S_speaker *speakerDriver, const S_usb *usbDriver);
//extern void SPK_SetCallbacks(S_speaker *speakerDriver,
// Callback_f outStreamStatusChanged,
// Callback_f outStreamMuteChanged);
//extern void SPK_RequestHandler(S_speaker *speakerDriver);
//extern char SPK_Read(S_speaker *speakerDriver,
// void *buffer,
// unsigned int length,
// Callback_f callback,
// void *argument);
//
//#endif //#ifndef SPEAKER_DRIVER_H
//
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