UsbHidPacketizer.h

/*
 * Copyright (c) 2013-14, Freescale Semiconductor, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * o Redistributions of source code must retain the above copyright notice, this list
 *   of conditions and the following disclaimer.
 *
 * o Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 *
 * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _usb_hid_packetizer_h_
#define _usb_hid_packetizer_h_

#include "Packetizer.h"
#include "UsbHidPeripheral.h"
#include "hidapi.h"

#include "bootloader_common.h"

#include "bootloader_hid_report_ids.h"


namespace blfwk
{
class UsbHidPacketizer : public Packetizer
{
public:
    enum _usbhid_contants
    {
        kReadFlushTimeoutMs = 100000,
#if defined(BL_WITHOUT_RECEIVE_SB_FILE_CMD)
        kPollAbortTimeoutMs = 0,
#else
        kPollAbortTimeoutMs = 10,
#endif
        kPollPacketMaxRetryCnt = 50,
        kContinuousReadMargin = 2,
    };
public:
    UsbHidPacketizer(UsbHidPeripheral *peripheral, uint32_t readPacketTimeoutMs);

    virtual ~UsbHidPacketizer();

    virtual status_t readPacket(uint8_t **packet, uint32_t *packetLength, packet_type_t packetType);

    virtual status_t writePacket(const uint8_t *packet, uint32_t byteCount, packet_type_t packetType);

    virtual void abortPacket();

    virtual void sync(){};

    virtual void finalize(){};

    virtual void enableSimulatorPump() {}
    virtual void pumpSimulator() {}
    virtual void setAborted(bool aborted) {}
    virtual uint32_t getMaxPacketSize();

    virtual UsbHidPeripheral *getPeripheral() { return (UsbHidPeripheral *)m_peripheral; }
protected:
    virtual void flushInput();

    bool pollForAbortPacket();

protected:
    bl_hid_report_t m_report;      
    bl_hid_report_t m_abortReport; 

private:
    uint32_t
        m_continuousReadCount; 
};

} // namespace blfwk


#endif // _usb_hid_packetizer_h_

// EOF