/*****************************************************************************
 * Copyright (c) 2019, Nsing Technologies Pte. Ltd.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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/**
 * @file usb_desc.h
 * @author Nations
 * @version v1.0.0
 *
 * @copyright Copyright (c) 2019, Nsing Technologies Pte. Ltd. All rights reserved.
 */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __USB_DESC_H
#define __USB_DESC_H

/* Includes ------------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/
/* Exported define -----------------------------------------------------------*/

#define SAUDIO_SIZ_DEVICE_DESC 18
#define AUDIO_SIZ_CONFIG_DESC 109
#define AUDIO_SIZ_INTERFACE_DESC_SIZE 9

#define USB_DEVICE_DESCRIPTOR_TYPE 0x01
#define USB_CONFIGURATION_DESCRIPTOR_TYPE 0x02
#define USB_STRING_DESCRIPTOR_TYPE 0x03
#define USB_INTERFACE_DESCRIPTOR_TYPE 0x04
#define USB_ENDPOINT_DESCRIPTOR_TYPE 0x05
#define USB_SIZ_DEVICE_DESC 18
#define USB_SIZ_STRING_LANGID 4

#define AUDIO_SIZ_STRING_LANGID 0x04
#define AUDIO_SIZ_STRING_VENDOR 0x26
#define AUDIO_SIZ_STRING_PRODUCT 0x18
#define AUDIO_SIZ_STRING_SERIAL 0x1A

#define AUDIO_SIZ_DEVICE_DESC 18

#define AUDIO_STANDARD_ENDPOINT_DESC_SIZE 0x09
#define AUDIO_STREAMING_ENDPOINT_DESC_SIZE 0x07

#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 USB_ENDPOINT_TYPE_ISOCHRONOUS 0x01
#define AUDIO_ENDPOINT_GENERAL 0x01

/* Exported functions ------------------------------------------------------- */
extern const uint8_t Audio_DeviceDescriptor[AUDIO_SIZ_DEVICE_DESC];
extern const uint8_t Audio_ConfigDescriptor[AUDIO_SIZ_CONFIG_DESC];
extern const uint8_t Audio_StringLangID[AUDIO_SIZ_STRING_LANGID];
extern const uint8_t Audio_StringVendor[AUDIO_SIZ_STRING_VENDOR];
extern const uint8_t Audio_StringProduct[AUDIO_SIZ_STRING_PRODUCT];
extern uint8_t Audio_StringSerial[AUDIO_SIZ_STRING_SERIAL];

#endif /* __USB_DESC_H */
