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/**
******************************************************************************
* @file usbd_audio_core.h
* @author MCD Application Team
* @version V2.0.0
* @date 18-February-2014
* @brief header file for the usbd_audio_core.c file.
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#ifndef __USB_AUDIO_CORE_H_
#define __USB_AUDIO_CORE_H_
#include "usbd_ioreq.h"
/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
* @{
*/
/** @defgroup USBD_AUDIO
* @brief This file is the Header file for USBD_msc.c
* @{
*/
/** @defgroup USBD_AUDIO_Exported_Defines
* @{
*/
#define AUDIO_OUT_EP 0x01
#define USB_AUDIO_CONFIG_DESC_SIZ 109
#define AUDIO_INTERFACE_DESC_SIZE 9
#define USB_AUDIO_DESC_SIZ 0x09
#define AUDIO_STANDARD_ENDPOINT_DESC_SIZE 0x09
#define AUDIO_STREAMING_ENDPOINT_DESC_SIZE 0x07
#define AUDIO_DESCRIPTOR_TYPE 0x21
#define USB_DEVICE_CLASS_AUDIO 0x01
#define AUDIO_SUBCLASS_AUDIOCONTROL 0x01
#define AUDIO_SUBCLASS_AUDIOSTREAMING 0x02
#define AUDIO_PROTOCOL_UNDEFINED 0x00
#define AUDIO_STREAMING_GENERAL 0x01
#define AUDIO_STREAMING_FORMAT_TYPE 0x02
/* Audio Descriptor Types */
#define AUDIO_INTERFACE_DESCRIPTOR_TYPE 0x24
#define AUDIO_ENDPOINT_DESCRIPTOR_TYPE 0x25
/* Audio Control Interface Descriptor Subtypes */
#define AUDIO_CONTROL_HEADER 0x01
#define AUDIO_CONTROL_INPUT_TERMINAL 0x02
#define AUDIO_CONTROL_OUTPUT_TERMINAL 0x03
#define AUDIO_CONTROL_FEATURE_UNIT 0x06
#define AUDIO_INPUT_TERMINAL_DESC_SIZE 0x0C
#define AUDIO_OUTPUT_TERMINAL_DESC_SIZE 0x09
#define AUDIO_STREAMING_INTERFACE_DESC_SIZE 0x07
#define AUDIO_CONTROL_MUTE 0x0001
#define AUDIO_FORMAT_TYPE_I 0x01
#define AUDIO_FORMAT_TYPE_III 0x03
#define AUDIO_ENDPOINT_GENERAL 0x01
#define AUDIO_REQ_GET_CUR 0x81
#define AUDIO_REQ_SET_CUR 0x01
#define AUDIO_OUT_STREAMING_CTRL 0x02
#define AUDIO_OUT_PACKET (uint32_t)(((USBD_AUDIO_FREQ * 2 * 2) /1000))
#define AUDIO_DEFAULT_VOLUME 70
/* Number of sub-packets in the audio transfer buffer. You can modify this value but always make sure
that it is an even number and higher than 3 */
#define AUDIO_OUT_PACKET_NUM 80
/* Total size of the audio transfer buffer */
#define AUDIO_TOTAL_BUF_SIZE ((uint32_t)(AUDIO_OUT_PACKET * AUDIO_OUT_PACKET_NUM))
/* Audio Commands enmueration */
typedef enum
{
AUDIO_CMD_START = 1,
AUDIO_CMD_PLAY,
AUDIO_CMD_STOP,
}AUDIO_CMD_TypeDef;
typedef enum
{
AUDIO_OFFSET_NONE = 0,
AUDIO_OFFSET_HALF,
AUDIO_OFFSET_FULL,
AUDIO_OFFSET_UNKNOWN,
}
AUDIO_OffsetTypeDef;
/**
* @}
*/
/** @defgroup USBD_CORE_Exported_TypesDefinitions
* @{
*/
typedef struct
{
uint8_t cmd;
uint8_t data[USB_MAX_EP0_SIZE];
uint8_t len;
uint8_t unit;
}
USBD_AUDIO_ControlTypeDef;
typedef struct
{
__IO uint32_t alt_setting;
uint8_t buffer[AUDIO_TOTAL_BUF_SIZE];
AUDIO_OffsetTypeDef offset;
uint8_t rd_enable;
uint16_t rd_ptr;
uint16_t wr_ptr;
USBD_AUDIO_ControlTypeDef control;
}
USBD_AUDIO_HandleTypeDef;
typedef struct
{
int8_t (*Init) (uint32_t AudioFreq, uint32_t Volume, uint32_t options);
int8_t (*DeInit) (uint32_t options);
int8_t (*AudioCmd) (uint8_t* pbuf, uint32_t size, uint8_t cmd);
int8_t (*VolumeCtl) (uint8_t vol);
int8_t (*MuteCtl) (uint8_t cmd);
int8_t (*PeriodicTC) (uint8_t cmd);
int8_t (*GetState) (void);
}USBD_AUDIO_ItfTypeDef;
/**
* @}
*/
/** @defgroup USBD_CORE_Exported_Macros
* @{
*/
/**
* @}
*/
/** @defgroup USBD_CORE_Exported_Variables
* @{
*/
extern USBD_ClassTypeDef USBD_AUDIO;
/**
* @}
*/
/** @defgroup USB_CORE_Exported_Functions
* @{
*/
uint8_t USBD_AUDIO_RegisterInterface (USBD_HandleTypeDef *pdev,
USBD_AUDIO_ItfTypeDef *fops);
void USBD_AUDIO_Sync (USBD_HandleTypeDef *pdev, AUDIO_OffsetTypeDef offset);
/**
* @}
*/
#endif // __USB_AUDIO_CORE_H_
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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