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150 lines
5.0 KiB
C
150 lines
5.0 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/** \file
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* USB Audio Device Streaming interface with controls.
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* (3 channels (including master) supported).
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*/
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/** \addtogroup usbd_audio_speakerphone
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*@{
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* Implement speakerphone function that combine 1 AC interface, 1 AS interface
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* for speaker and 1 AS interface for microphone.
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*/
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#ifndef _AUDD_STREAM_H_
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#define _AUDD_STREAM_H_
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/*------------------------------------------------------------------------------
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* Headers
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*------------------------------------------------------------------------------*/
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#include <stdint.h>
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#include <USBD.h>
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#include <USBDDriver.h>
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/*------------------------------------------------------------------------------
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* Defines
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*------------------------------------------------------------------------------*/
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/** \addtopage usbd_audio_ec Audio Device Event codes
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* @{
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*/
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/** Mute status changed */
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#define AUDD_EC_MuteChanged 1
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/** Volume status changed */
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#define AUDD_EC_VolumeChanged 2
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/** @}*/
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/*------------------------------------------------------------------------------
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* Types
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*------------------------------------------------------------------------------*/
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/** Callback function for Audio Stream Event */
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typedef void (*AUDDStreamEventCallback)(uint32_t ec,
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uint8_t channel,
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void* pArg);
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/**
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* Struct of USB Audio Stream Interface.
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* Support 1 control interface, with I & O stream.
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* Unit ID 0xFF is reserved for not implemented.
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*/
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typedef struct _AUDDStream {
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/** AudioControl Interface number */
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uint8_t bAcInterface;
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/** AudioControl Feature Unit ID for IN */
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uint8_t bFeatureUnitOut;
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/** AudioControl Feature Unit ID for OUT */
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uint8_t bFeatureUnitIn;
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/** AudioStreaming Interface number */
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uint8_t bAsInterface;
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/** Streaming OUT endpoint address */
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uint8_t bEndpointOut;
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/** Streaming IN endpoint address */
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uint8_t bEndpointIn;
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/** Number of channels (<=8) */
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uint8_t bNumChannels;
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/** Mute control bits (8b) */
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uint8_t bmMute;
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/** Volume control data */
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uint16_t *pwVolumes;
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/** Audio Streaming Events Callback */
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AUDDStreamEventCallback fCallback;
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/** Callback arguments */
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void* pArg;
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} AUDDStream;
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/*------------------------------------------------------------------------------
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* Functions
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*------------------------------------------------------------------------------*/
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extern void AUDDStream_Initialize(
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AUDDStream * pAuds,
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uint8_t numChannels,
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uint16_t wChannelVolumes [ ],
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AUDDStreamEventCallback fCallback,
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void * pArg);
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extern uint32_t AUDDStream_ChangeMute(
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AUDDStream * pAuds,
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uint8_t bChannel,
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uint8_t bMute);
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extern uint32_t AUDDStream_SetVolume(
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AUDDStream * pAuds,
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uint8_t bChannel,
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uint16_t wVolume);
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extern uint32_t AUDDStream_IsRequestAccepted(
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AUDDStream *pAuds,
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const USBGenericRequest *pReq);
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extern uint32_t AUDDStream_Read(
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AUDDStream * pAuds,
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void * pData, uint32_t dwSize,
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TransferCallback fCallback,void * pArg);
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extern uint32_t AUDDStream_SetupWrite(
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AUDDStream * pAuds,
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void * pListInit, void * pDmaInit, uint16_t listSize,
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uint16_t delaySize,
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TransferCallback callback,void * argument);
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extern uint32_t AUDDStream_Write(
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AUDDStream * pAuds,
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void * pBuffer,uint16_t wLength);
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extern uint32_t AUDDStream_Close(AUDDStream * pStream);
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#endif /* _AUDD_STREAM_H_ */
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