/**
  ******************************************************************************
  * @file    usb_desc.h
  * @author  MCD Application Team
  * @version V4.0.0
  * @date    21-January-2013
  * @brief   Descriptor Header for Audio Speaker Demo
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2013 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.
  *
  ******************************************************************************
  */

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


// Exported define -----------------------------------------------------------
#define SPEAKER_DEVICE_DESC_SIZE                      18
#define SPEAKER_CONFIG_DESC_SIZE                      109
#define SPEAKER_SIZ_INTERFACE_DESC_SIZE               9
#define AUDIO_STANDARD_ENDPOINT_DESC_SIZE             9
#define AUDIO_STREAMING_ENDPOINT_DESC_SIZE            7
#define AUDIO_INPUT_TERMINAL_DESC_SIZE                12
#define AUDIO_OUTPUT_TERMINAL_DESC_SIZE               9
#define AUDIO_STREAMING_INTERFACE_DESC_SIZE           7

#define SPEAKER_SIZ_STRING_LANGID                     0x04
#define SPEAKER_SIZ_STRING_VENDOR                     0x26
#define SPEAKER_SIZ_STRING_PRODUCT                    0x22
#define SPEAKER_SIZ_STRING_SERIAL                     0x1A

// USB Descriptor Types
#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_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_CONTROL_MUTE                            0x0001
#define AUDIO_FORMAT_TYPE_I                           0x01
#define USB_ENDPOINT_TYPE_ISOCHRONOUS                 0x01
#define AUDIO_ENDPOINT_GENERAL                        0x01


// Exported variables
extern const uint8_t Speaker_DeviceDescriptor[SPEAKER_DEVICE_DESC_SIZE];
extern const uint8_t Speaker_ConfigDescriptor[SPEAKER_CONFIG_DESC_SIZE];
extern const uint8_t Speaker_StringLangID[SPEAKER_SIZ_STRING_LANGID];
extern const uint8_t Speaker_StringVendor[SPEAKER_SIZ_STRING_VENDOR];
extern const uint8_t Speaker_StringProduct[SPEAKER_SIZ_STRING_PRODUCT];
extern uint8_t Speaker_StringSerial[SPEAKER_SIZ_STRING_SERIAL];


#endif // __USB_DESC_H