202 lines
5.8 KiB
C
202 lines
5.8 KiB
C
/**
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******************************************************************************
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* @file usbd_audio_core.h
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* @author MCD Application Team
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* @version V2.0.0
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* @date 18-February-2014
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* @brief header file for the usbd_audio_core.c file.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#ifndef __USB_AUDIO_CORE_H_
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#define __USB_AUDIO_CORE_H_
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#include "usbd_ioreq.h"
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/** @addtogroup STM32_USB_OTG_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_msc.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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#define AUDIO_OUT_EP 0x01
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#define USB_AUDIO_CONFIG_DESC_SIZ 109
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#define AUDIO_INTERFACE_DESC_SIZE 9
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#define USB_AUDIO_DESC_SIZ 0x09
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#define AUDIO_STANDARD_ENDPOINT_DESC_SIZE 0x09
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#define AUDIO_STREAMING_ENDPOINT_DESC_SIZE 0x07
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#define AUDIO_DESCRIPTOR_TYPE 0x21
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#define USB_DEVICE_CLASS_AUDIO 0x01
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#define AUDIO_SUBCLASS_AUDIOCONTROL 0x01
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#define AUDIO_SUBCLASS_AUDIOSTREAMING 0x02
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#define AUDIO_PROTOCOL_UNDEFINED 0x00
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#define AUDIO_STREAMING_GENERAL 0x01
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#define AUDIO_STREAMING_FORMAT_TYPE 0x02
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/* Audio Descriptor Types */
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#define AUDIO_INTERFACE_DESCRIPTOR_TYPE 0x24
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#define AUDIO_ENDPOINT_DESCRIPTOR_TYPE 0x25
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/* Audio Control Interface Descriptor Subtypes */
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#define AUDIO_CONTROL_HEADER 0x01
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#define AUDIO_CONTROL_INPUT_TERMINAL 0x02
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#define AUDIO_CONTROL_OUTPUT_TERMINAL 0x03
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#define AUDIO_CONTROL_FEATURE_UNIT 0x06
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#define AUDIO_INPUT_TERMINAL_DESC_SIZE 0x0C
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#define AUDIO_OUTPUT_TERMINAL_DESC_SIZE 0x09
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#define AUDIO_STREAMING_INTERFACE_DESC_SIZE 0x07
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#define AUDIO_CONTROL_MUTE 0x0001
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#define AUDIO_FORMAT_TYPE_I 0x01
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#define AUDIO_FORMAT_TYPE_III 0x03
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#define AUDIO_ENDPOINT_GENERAL 0x01
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#define AUDIO_REQ_GET_CUR 0x81
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#define AUDIO_REQ_SET_CUR 0x01
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#define AUDIO_OUT_STREAMING_CTRL 0x02
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#define AUDIO_OUT_PACKET (uint32_t)(((USBD_AUDIO_FREQ * 2 * 2) /1000))
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#define AUDIO_DEFAULT_VOLUME 70
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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 80
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/* Total size of the audio transfer buffer */
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#define AUDIO_TOTAL_BUF_SIZE ((uint32_t)(AUDIO_OUT_PACKET * AUDIO_OUT_PACKET_NUM))
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/* Audio Commands enmueration */
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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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}
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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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}
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USBD_AUDIO_ControlTypeDef;
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typedef struct
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{
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__IO 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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}
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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 cmd);
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int8_t (*GetState) (void);
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}USBD_AUDIO_ItfTypeDef;
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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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/**
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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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/**
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* @}
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*/
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#endif // __USB_AUDIO_CORE_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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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