#ifndef __USB_OTG_FS_IMPL_H__
#define __USB_OTG_FS_IMPL_H__

#include "usb_otg_fs.h"
#include "usb_cdc.h"
//#include "usb_msc.h"

class USB_OTG_FS_Impl : public USB_OTG_FS {
  public:
    static const Uint16 DESC_DEVICE_bcdUSB        = 0x0200;
    static const Uint16 DESC_DEVICE_bcdDevice     = 0x0000;
    static const Uint8 DESC_DEVICE_iManufacturer  = 0x01;
    static const Uint8 DESC_DEVICE_iProduct       = 0x02;
    static const Uint8 DESC_DEVICE_iSerialNumber  = 0x03;
    static const Uint16 DESC_DEVICE_idVendor      = 0x10C4;
    static const Uint8 DESC_CONFIG_bConfigurationValue = 0x01;
    static const Uint8 DESC_CONFIG_iConfiguration      = 0x00;
    static const Uint8 DESC_CONFIG_bmAttributes        = 0x80;
    static const Uint8 DESC_CONFIG_MaxPower            = 0x0F;
    
    static const DeviceDescriptor DESC_DEVICE;
    static const ConfigurationDescriptor DESC_CONFIG;
    static const struct CDC_Related_Descriptor {
      InterfaceDescriptor i0;
      USB_CDC::HeaderFunctionDescriptor cdc0;
      USB_CDC::AbstractControlManagementFunctionalDescriptor cdc1;
      USB_CDC::UnionFunctionalDescriptor cdc2;
      USB_CDC::CallManagementFunctionalDescriptor cdc3;
      EndpointDescriptor e0;
      InterfaceDescriptor i1;
      EndpointDescriptor e1;
      EndpointDescriptor e2;
    } DESC_CDC;
    static const struct FT232_Related_Descriptor {
      InterfaceDescriptor i0;
      EndpointDescriptor e0;
      EndpointDescriptor e1;
    } DESC_FT232;
    static const struct MSC_Related_Descriptor {
      InterfaceDescriptor i0;
      EndpointDescriptor e0;
      EndpointDescriptor e1;
    } DESC_MSC;
    
    static const Uint8 DESC_STRING0[];
    static const Uint8 DESC_STRING1[];
    static const Uint8 DESC_STRING2[];
    static const Uint8 DESC_STRING3[];

  protected:
    Uint8 descriptor_buf[0x400];
    bool descriptor_buf_cached;
    bool dma_ready;
    int interfaces() const;
    bool descriptor(
        const Uint16 wValue, const Uint16 wIndex, 
        unsigned char **buf, int *size);
    bool setup(
        const int &configuration);
    bool class_request_handle(const SetupBuffer &buf);
    bool vendor_request_handle(const SetupBuffer &buf);
  public:
    //USB_FT232 ft232;
    USB_CDC cdc;
    static const Uint8 EP_INDEX_COMCTL;
    static const Uint8 EP_INDEX_COMDATA;
    static const Uint8 EP_INDEX_MSC;
    USB_OTG_FS_Impl();
    ~USB_OTG_FS_Impl();

    // override functions for using DMA
    void init();
    Uint16 read(const Uint8 &out_index, void *buf, const Uint16 &size);
    Uint16 read_skip(const Uint8 &out_index, const Uint16 &size);
    Uint16 write(const Uint8 &in_index, const void *buf, const Uint16 &size);
    Uint16 write_fill(const Uint8 &in_index, const Uint8 c, const Uint16 &size);
};

extern USB_OTG_FS_Impl usb_otg_fs_impl;

extern "C"{
void usb0_isr();
}

#endif /* __USB_OTG_FS_IMPL_H__ */