#ifndef __USBD_DESC__C__
#define __USBD_DESC__C__

#ifdef __cplusplus
 extern "C" {
#endif
#include "usbd_conf.h"
#include "usbd_def.h"

  /** Descriptor for the Usb device. */
  extern USBD_DescriptorsTypeDef USBD_COMMON_Desc;

  #if USBD_GETDESCRIPTORS_ALTMETHOD == 1

  extern const uint8_t * USBD_COMMON_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_GetCfgDesc (USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_GetMsOsStringDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_GetExtCompatIdOsFeatureDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
  extern const uint8_t * USBD_COMMON_GetExtPropertiesOsFeatureDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);

  // @USBD_GETDESCRIPTOR_DEFAULT_HANDLERS_SET
  // Allows to inherit the the handlers in the class-specific handlers set:
  // You should declare your own @USBD_DescriptorsTypeDef variable, and
  // the initialize the contents with your functions by filed names, but
  // insert this marco in the top:
  //   const USBD_DescriptorsTypeDef CustomDescriptorHandlers = {
  //     USBD_GETDESCRIPTOR_DEFAULT_HANDLERS_SET,
  //     .GetDeviceDescriptor = MyCustomGetDeviceDescriptor
  //     .GetInterfaceStrDescriptor = MyCustomGetInterfaceStrDescriptor,
  //   };
  //  In the example above only @GetDeviceDescriptor and @GetInterfaceStrDescriptor
  //  are implemeted in the class and overrided in the structure, all others 
  // handlers are initialized by the default handler-functions.
  //
  // INTERNATIONAL STANDARD ISO/IEC 9899, Programming languages — C, Second edition 1999-12-01
  // 6.7.8 Initialization, section 19:
  // The initialization shall occur in initializer list order, each initializer provided for a
  // particular subobject overriding any previously listed initializer for the same subobject; all
  // subobjects that are not initialized explicitly shall be initialized implicitly the same as
  // objects that have static storage duration.
  #define USBD_GETDESCRIPTOR_DEFAULT_HANDLERS_SET \
     .GetDeviceDescriptor               =  USBD_COMMON_DeviceDescriptor\
   , .GetLangIDStrDescriptor            =  USBD_COMMON_LangIDStrDescriptor\
   , .GetManufacturerStrDescriptor      =  USBD_COMMON_ManufacturerStrDescriptor\
   , .GetProductStrDescriptor           =  USBD_COMMON_ProductStrDescriptor\
   , .GetSerialStrDescriptor            =  USBD_COMMON_SerialStrDescriptor\
   , .GetConfigurationStrDescriptor     =  USBD_COMMON_ConfigStrDescriptor\
   , .GetInterfaceStrDescriptor         =  USBD_COMMON_InterfaceStrDescriptor\
   , .GetConfigDescriptor               =  USBD_COMMON_GetCfgDesc\
   , .GetMsOsStringDescriptor           =  USBD_COMMON_GetMsOsStringDescriptor\
   , .GetExtCompatIdOsFeatureDescriptor =  USBD_COMMON_GetExtCompatIdOsFeatureDescriptor\
   USBD_GETUSERSTR_INITIALIZER

  #if USBD_SUPPORT_USER_STRING
    #define USBD_GETUSERSTR_INITIALIZER    ,.GetUsrStrDescriptor = NULL 
  #else
    #define USBD_GETUSERSTR_INITIALIZER
  #endif

#endif // USBD_GETDESCRIPTORS_ALTMETHOD
#ifdef __cplusplus
}
#endif

#endif /* __USBD_DESC__C__ */