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/**
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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 V1.1.0
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* @date 19-March-2012
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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 2012 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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#include "usbd_req.h"
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#include "usbd_desc.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_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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/* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 2) */
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#define AUDIO_OUT_PACKET (uint32_t)(((USBD_AUDIO_FREQ * 2 * 2) /1000))
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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 OUT_PACKET_NUM 4
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/* Total size of the audio transfer buffer */
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#define TOTAL_OUT_BUF_SIZE ((uint32_t)(AUDIO_OUT_PACKET * OUT_PACKET_NUM))
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#define AUDIO_CONFIG_DESC_SIZE 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 USB_ENDPOINT_TYPE_ISOCHRONOUS 0x01
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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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/**
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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 _Audio_Fops
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{
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uint8_t (*Init) (uint32_t AudioFreq, uint32_t Volume, uint32_t options);
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uint8_t (*DeInit) (uint32_t options);
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uint8_t (*AudioCmd) (uint8_t* pbuf, uint32_t size, uint8_t cmd);
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uint8_t (*VolumeCtl) (uint8_t vol);
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uint8_t (*MuteCtl) (uint8_t cmd);
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uint8_t (*PeriodicTC) (uint8_t cmd);
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uint8_t (*GetState) (void);
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}AUDIO_FOPS_TypeDef;
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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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#define AUDIO_PACKET_SZE(frq) (uint8_t)(((frq * 2 * 2)/1000) & 0xFF), \
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(uint8_t)((((frq * 2 * 2)/1000) >> 8) & 0xFF)
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#define SAMPLE_FREQ(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), (uint8_t)((frq >> 16))
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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_Class_cb_TypeDef AUDIO_cb;
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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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/**
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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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