libusrp/host/lib/fusb_generic.cc

109 lines
2.5 KiB
C++

/* -*- c++ -*- */
/*
* Copyright 2003 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <fusb_generic.h>
#include <usb.h>
static const int USB_TIMEOUT = 1000; // in milliseconds
fusb_devhandle_generic::fusb_devhandle_generic (usb_dev_handle *udh)
: fusb_devhandle (udh)
{
// that's it
}
fusb_devhandle_generic::~fusb_devhandle_generic ()
{
// nop
}
fusb_ephandle *
fusb_devhandle_generic::make_ephandle (int endpoint, bool input_p,
int block_size, int nblocks)
{
return new fusb_ephandle_generic (this, endpoint, input_p,
block_size, nblocks);
}
// ----------------------------------------------------------------
fusb_ephandle_generic::fusb_ephandle_generic (fusb_devhandle_generic *dh,
int endpoint, bool input_p,
int block_size, int nblocks)
: fusb_ephandle (endpoint, input_p, block_size, nblocks),
d_devhandle (dh)
{
// that's it
}
fusb_ephandle_generic::~fusb_ephandle_generic ()
{
// nop
}
bool
fusb_ephandle_generic::start ()
{
d_started = true;
return true;
}
bool
fusb_ephandle_generic::stop ()
{
d_started = false;
return true;
}
int
fusb_ephandle_generic::write (const void *buffer, int nbytes)
{
if (!d_started) // doesn't matter here, but keeps semantics constant
return -1;
if (d_input_p)
return -1;
return usb_bulk_write (d_devhandle->get_usb_dev_handle (),
d_endpoint, (char *) buffer, nbytes, USB_TIMEOUT);
}
int
fusb_ephandle_generic::read (void *buffer, int nbytes)
{
if (!d_started) // doesn't matter here, but keeps semantics constant
return -1;
if (!d_input_p)
return -1;
return usb_bulk_read (d_devhandle->get_usb_dev_handle (),
d_endpoint|USB_ENDPOINT_IN, (char *) buffer, nbytes,
USB_TIMEOUT);
}