mirror of
https://github.com/STMicroelectronics/stm32-mw-usb-device.git
synced 2026-02-09 04:25:36 -05:00
333 lines
8.9 KiB
C
333 lines
8.9 KiB
C
/**
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******************************************************************************
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* @file usbd_audio.h
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* @author MCD Application Team
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* @brief header file for the usbd_audio.c file.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2015 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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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 __USB_AUDIO_H
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#define __USB_AUDIO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Includes ------------------------------------------------------------------*/
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#include "usbd_ioreq.h"
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/** @addtogroup STM32_USB_DEVICE_LIBRARY
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* @{
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*/
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/** @defgroup USBD_AUDIO
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* @brief This file is the Header file for usbd_audio.c
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* @{
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*/
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/** @defgroup USBD_AUDIO_Exported_Defines
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* @{
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*/
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#ifndef USBD_AUDIO_FREQ
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/* AUDIO Class Config */
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#define USBD_AUDIO_FREQ 48000U
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#endif /* USBD_AUDIO_FREQ */
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#ifndef USBD_MAX_NUM_INTERFACES
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#define USBD_MAX_NUM_INTERFACES 1U
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#endif /* USBD_AUDIO_FREQ */
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#ifndef AUDIO_HS_BINTERVAL
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#define AUDIO_HS_BINTERVAL 0x01U
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#endif /* AUDIO_HS_BINTERVAL */
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#ifndef AUDIO_FS_BINTERVAL
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#define AUDIO_FS_BINTERVAL 0x01U
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#endif /* AUDIO_FS_BINTERVAL */
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#ifndef AUDIO_OUT_EP
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#define AUDIO_OUT_EP 0x01U
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#endif /* AUDIO_OUT_EP */
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#define USB_AUDIO_CONFIG_DESC_SIZ 0x6DU
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#define AUDIO_INTERFACE_DESC_SIZE 0x09U
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#define USB_AUDIO_DESC_SIZ 0x09U
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#define AUDIO_STANDARD_ENDPOINT_DESC_SIZE 0x09U
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#define AUDIO_STREAMING_ENDPOINT_DESC_SIZE 0x07U
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#define AUDIO_DESCRIPTOR_TYPE 0x21U
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#define USB_DEVICE_CLASS_AUDIO 0x01U
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#define AUDIO_SUBCLASS_AUDIOCONTROL 0x01U
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#define AUDIO_SUBCLASS_AUDIOSTREAMING 0x02U
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#define AUDIO_PROTOCOL_UNDEFINED 0x00U
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#define AUDIO_STREAMING_GENERAL 0x01U
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#define AUDIO_STREAMING_FORMAT_TYPE 0x02U
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/* Audio Descriptor Types */
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#define AUDIO_INTERFACE_DESCRIPTOR_TYPE 0x24U
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#define AUDIO_ENDPOINT_DESCRIPTOR_TYPE 0x25U
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/* Audio Control Interface Descriptor Subtypes */
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#define AUDIO_CONTROL_HEADER 0x01U
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#define AUDIO_CONTROL_INPUT_TERMINAL 0x02U
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#define AUDIO_CONTROL_OUTPUT_TERMINAL 0x03U
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#define AUDIO_CONTROL_FEATURE_UNIT 0x06U
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#define AUDIO_INPUT_TERMINAL_DESC_SIZE 0x0CU
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#define AUDIO_OUTPUT_TERMINAL_DESC_SIZE 0x09U
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#define AUDIO_STREAMING_INTERFACE_DESC_SIZE 0x07U
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#define AUDIO_CONTROL_MUTE 0x0001U
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#define AUDIO_FORMAT_TYPE_I 0x01U
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#define AUDIO_FORMAT_TYPE_III 0x03U
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#define AUDIO_ENDPOINT_GENERAL 0x01U
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#define AUDIO_REQ_GET_CUR 0x81U
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#define AUDIO_REQ_SET_CUR 0x01U
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#define AUDIO_OUT_STREAMING_CTRL 0x02U
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#define AUDIO_OUT_TC 0x01U
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#define AUDIO_IN_TC 0x02U
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#define AUDIO_OUT_PACKET (uint16_t)(((USBD_AUDIO_FREQ * 2U * 2U) / 1000U))
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#define AUDIO_DEFAULT_VOLUME 70U
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/* Number of sub-packets in the audio transfer buffer. You can modify this value but always make sure
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that it is an even number and higher than 3 */
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#define AUDIO_OUT_PACKET_NUM 80U
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/* Total size of the audio transfer buffer */
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#define AUDIO_TOTAL_BUF_SIZE ((uint16_t)(AUDIO_OUT_PACKET * AUDIO_OUT_PACKET_NUM))
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/* Audio Commands enumeration */
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typedef enum
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{
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AUDIO_CMD_START = 1,
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AUDIO_CMD_PLAY,
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AUDIO_CMD_STOP,
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} AUDIO_CMD_TypeDef;
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typedef enum
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{
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AUDIO_OFFSET_NONE = 0,
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AUDIO_OFFSET_HALF,
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AUDIO_OFFSET_FULL,
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AUDIO_OFFSET_UNKNOWN,
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} AUDIO_OffsetTypeDef;
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/**
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* @}
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*/
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/** @defgroup USBD_CORE_Exported_TypesDefinitions
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* @{
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*/
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typedef struct
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{
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uint8_t cmd;
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uint8_t data[USB_MAX_EP0_SIZE];
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uint8_t len;
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uint8_t unit;
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} USBD_AUDIO_ControlTypeDef;
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typedef struct
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{
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uint32_t alt_setting;
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uint8_t buffer[AUDIO_TOTAL_BUF_SIZE];
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AUDIO_OffsetTypeDef offset;
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uint8_t rd_enable;
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uint16_t rd_ptr;
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uint16_t wr_ptr;
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USBD_AUDIO_ControlTypeDef control;
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} USBD_AUDIO_HandleTypeDef;
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typedef struct
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{
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int8_t (*Init)(uint32_t AudioFreq, uint32_t Volume, uint32_t options);
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int8_t (*DeInit)(uint32_t options);
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int8_t (*AudioCmd)(uint8_t *pbuf, uint32_t size, uint8_t cmd);
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int8_t (*VolumeCtl)(uint8_t vol);
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int8_t (*MuteCtl)(uint8_t cmd);
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int8_t (*PeriodicTC)(uint8_t *pbuf, uint32_t size, uint8_t cmd);
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int8_t (*GetState)(void);
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} USBD_AUDIO_ItfTypeDef;
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/*
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* Audio Class specification release 1.0
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*/
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/* Table 4-2: Class-Specific AC Interface Header Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint16_t bcdADC;
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uint16_t wTotalLength;
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uint8_t bInCollection;
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uint8_t baInterfaceNr;
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} __PACKED USBD_SpeakerIfDescTypeDef;
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/* Table 4-3: Input Terminal Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bTerminalID;
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uint16_t wTerminalType;
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uint8_t bAssocTerminal;
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uint8_t bNrChannels;
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uint16_t wChannelConfig;
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uint8_t iChannelNames;
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uint8_t iTerminal;
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} __PACKED USBD_SpeakerInDescTypeDef;
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/* USB Speaker Audio Feature Unit Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bUnitID;
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uint8_t bSourceID;
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uint8_t bControlSize;
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uint16_t bmaControls;
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uint8_t iTerminal;
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} __PACKED USBD_SpeakerFeatureDescTypeDef;
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/* Table 4-4: Output Terminal Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bTerminalID;
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uint16_t wTerminalType;
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uint8_t bAssocTerminal;
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uint8_t bSourceID;
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uint8_t iTerminal;
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} __PACKED USBD_SpeakerOutDescTypeDef;
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/* Table 4-19: Class-Specific AS Interface Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bTerminalLink;
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uint8_t bDelay;
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uint16_t wFormatTag;
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} __PACKED USBD_SpeakerStreamIfDescTypeDef;
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/* USB Speaker Audio Type III Format Interface Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptorSubtype;
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uint8_t bFormatType;
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uint8_t bNrChannels;
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uint8_t bSubFrameSize;
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uint8_t bBitResolution;
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uint8_t bSamFreqType;
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uint8_t tSamFreq2;
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uint8_t tSamFreq1;
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uint8_t tSamFreq0;
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} USBD_SpeakerIIIFormatIfDescTypeDef;
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/* Table 4-17: Standard AC Interrupt Endpoint Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bEndpointAddress;
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uint8_t bmAttributes;
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uint16_t wMaxPacketSize;
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uint8_t bInterval;
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uint8_t bRefresh;
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uint8_t bSynchAddress;
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} __PACKED USBD_SpeakerEndDescTypeDef;
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/* Table 4-21: Class-Specific AS Isochronous Audio Data Endpoint Descriptor */
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typedef struct
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{
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uint8_t bLength;
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uint8_t bDescriptorType;
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uint8_t bDescriptor;
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uint8_t bmAttributes;
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uint8_t bLockDelayUnits;
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uint16_t wLockDelay;
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} __PACKED USBD_SpeakerEndStDescTypeDef;
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/**
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* @}
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*/
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/** @defgroup USBD_CORE_Exported_Macros
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USBD_CORE_Exported_Variables
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* @{
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*/
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extern USBD_ClassTypeDef USBD_AUDIO;
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#define USBD_AUDIO_CLASS &USBD_AUDIO
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/**
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* @}
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*/
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/** @defgroup USB_CORE_Exported_Functions
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* @{
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*/
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uint8_t USBD_AUDIO_RegisterInterface(USBD_HandleTypeDef *pdev,
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USBD_AUDIO_ItfTypeDef *fops);
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void USBD_AUDIO_Sync(USBD_HandleTypeDef *pdev, AUDIO_OffsetTypeDef offset);
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#ifdef USE_USBD_COMPOSITE
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uint32_t USBD_AUDIO_GetEpPcktSze(USBD_HandleTypeDef *pdev, uint8_t If, uint8_t Ep);
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#endif /* USE_USBD_COMPOSITE */
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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 /* __USB_AUDIO_H */
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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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