134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/**
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**************************************************************************
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* @file audio_class.h
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* @version v2.0.9
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* @date 2022-06-28
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* @brief usb audio class file
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**************************************************************************
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* Copyright notice & Disclaimer
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*
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* The software Board Support Package (BSP) that is made available to
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* download from Artery official website is the copyrighted work of Artery.
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* Artery authorizes customers to use, copy, and distribute the BSP
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* software and its related documentation for the purpose of design and
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* development in conjunction with Artery microcontrollers. Use of the
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* software is governed by this copyright notice and the following disclaimer.
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*
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* THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
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* GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
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* TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
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* STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
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* INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
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*
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**************************************************************************
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*/
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/* define to prevent recursive inclusion -------------------------------------*/
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#ifndef __AUDIO_CLASS_H
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#define __AUDIO_CLASS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "usb_std.h"
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#include "usbd_core.h"
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#include "audio_conf.h"
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/** @addtogroup AT32F435_437_middlewares_usbd_class
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* @{
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*/
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/** @addtogroup USB_audio_class
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* @{
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*/
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/** @defgroup USB_audio_class_definition
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* @{
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*/
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/**
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* @brief endpoint define
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*/
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#define USBD_AUDIO_MIC_IN_EPT 0x81
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#define USBD_AUDIO_SPK_OUT_EPT 0x02
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#define USBD_AUDIO_FEEDBACK_EPT 0x83
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/**
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* @brief endpoint support max size
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*/
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#define AUDIO_REMAIN_SIZE 40
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#define AUDIO_MIC_IN_MAXPACKET_SIZE (AUDIO_SUPPORT_MAX_FREQ * AUDIO_MIC_CHANEL_NUM * (AUDIO_MIC_DEFAULT_BITW / 8) + AUDIO_REMAIN_SIZE)
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#define AUDIO_SPK_OUT_MAXPACKET_SIZE (AUDIO_SUPPORT_MAX_FREQ * AUDIO_SPK_CHANEL_NUM * (AUDIO_SPK_DEFAULT_BITW / 8) + AUDIO_REMAIN_SIZE)
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#define AUDIO_FEEDBACK_MAXPACKET_SIZE 0x3
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#define FEEDBACK_REFRESH_TIME 0x8
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/**
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* @brief request type define
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*/
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#define AUDIO_REQ_CONTROL_INTERFACE 0x01
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#define AUDIO_REQ_CONTROL_ENDPOINT 0x02
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#define AUDIO_REQ_CONTROL_MASK 0x03
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/**
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* @brief audio set cur type define
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*/
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#define AUDIO_MUTE_CONTROL 0x01
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#define AUDIO_VOLUME_CONTROL 0x02
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#define AUDIO_FREQ_SET_CONTROL 0x03
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/**
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* @brief audio descriptor type
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*/
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#define AUDIO_DESCRIPTOR_TYPE 0x21
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#define AUDIO_DESCRIPTOR_SIZE 0x09
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/**
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* @brief usb audio control struct
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*/
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typedef struct
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{
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uint8_t enpd;
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uint8_t interface;
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uint8_t request_no;
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uint8_t spk_mute;
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uint8_t mic_mute;
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uint16_t spk_volume;
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uint16_t mic_volume;
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uint32_t spk_freq;
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uint32_t mic_freq;
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uint16_t spk_volume_limits[3]; /*[0] is mininum value, [1] is maxnum value, [2] is volume resolution */
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uint16_t mic_volume_limits[3]; /*[0] is mininum value, [1] is maxnum value, [2] is volume resolution */
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uint8_t audio_cmd;
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uint32_t audio_cmd_len;
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uint32_t spk_alt_setting;
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uint32_t mic_alt_setting;
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uint8_t g_audio_cur[64];
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uint8_t audio_spk_data[AUDIO_SPK_OUT_MAXPACKET_SIZE];
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uint8_t audio_mic_data[AUDIO_MIC_IN_MAXPACKET_SIZE];
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uint8_t audio_feed_back[AUDIO_FEEDBACK_MAXPACKET_SIZE+1];
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__IO uint16_t audio_feedback_state;
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__IO uint8_t audio_spk_out_stage;
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}usb_audio_type;
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extern usbd_class_handler audio_class_handler;
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif
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