mirror of https://gerrit.osmocom.org/libusrp
268 lines
6.1 KiB
C++
268 lines
6.1 KiB
C++
/* -*- c++ -*- */
|
|
/*
|
|
* Copyright 2003,2005 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_win32.h>
|
|
#include <usb.h>
|
|
#include <assert.h>
|
|
#include <stdexcept>
|
|
#include <string.h>
|
|
#include <cstdio>
|
|
|
|
static const int MAX_BLOCK_SIZE = fusb_sysconfig::max_block_size();
|
|
static const int DEFAULT_BLOCK_SIZE = MAX_BLOCK_SIZE;
|
|
static const int DEFAULT_BUFFER_SIZE = 16 * (1L << 20); // 16 MB / endpoint
|
|
|
|
|
|
static const int USB_TIMEOUT = 1000; // in milliseconds
|
|
|
|
|
|
fusb_devhandle_win32::fusb_devhandle_win32 (usb_dev_handle *udh)
|
|
: fusb_devhandle (udh)
|
|
{
|
|
// that's it
|
|
}
|
|
|
|
fusb_devhandle_win32::~fusb_devhandle_win32 ()
|
|
{
|
|
// nop
|
|
}
|
|
|
|
fusb_ephandle *
|
|
fusb_devhandle_win32::make_ephandle (int endpoint, bool input_p,
|
|
int block_size, int nblocks)
|
|
{
|
|
return new fusb_ephandle_win32 (this, endpoint, input_p,
|
|
block_size, nblocks);
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
fusb_ephandle_win32::fusb_ephandle_win32 (fusb_devhandle_win32 *dh,
|
|
int endpoint, bool input_p,
|
|
int block_size, int nblocks)
|
|
: fusb_ephandle (endpoint, input_p, block_size, nblocks),
|
|
d_devhandle (dh), d_input_leftover(0),d_output_short(0)
|
|
{
|
|
if (d_block_size < 0 || d_block_size > MAX_BLOCK_SIZE)
|
|
throw std::out_of_range ("fusb_ephandle_win32: block_size");
|
|
|
|
if (d_nblocks < 0)
|
|
throw std::out_of_range ("fusb_ephandle_win32: nblocks");
|
|
|
|
if (d_block_size == 0)
|
|
d_block_size = DEFAULT_BLOCK_SIZE;
|
|
|
|
if (d_nblocks == 0)
|
|
d_nblocks = std::max (1, DEFAULT_BUFFER_SIZE / d_block_size);
|
|
|
|
d_buffer = new char [d_block_size*d_nblocks];
|
|
d_context = new void * [d_nblocks];
|
|
|
|
// allocate contexts
|
|
|
|
usb_dev_handle *dev = dh->get_usb_dev_handle ();
|
|
int i;
|
|
|
|
if (d_input_p)
|
|
endpoint |= USB_ENDPOINT_IN;
|
|
|
|
for (i=0; i<d_nblocks; i++)
|
|
usb_bulk_setup_async(dev, &d_context[i], endpoint);
|
|
}
|
|
|
|
fusb_ephandle_win32::~fusb_ephandle_win32 ()
|
|
{
|
|
int i;
|
|
|
|
stop ();
|
|
|
|
for (i=0; i<d_nblocks; i++)
|
|
usb_free_async(&d_context[i]);
|
|
|
|
delete [] d_buffer;
|
|
delete [] d_context;
|
|
}
|
|
|
|
bool
|
|
fusb_ephandle_win32::start ()
|
|
{
|
|
if (d_started)
|
|
return true; // already running
|
|
|
|
d_started = true;
|
|
|
|
d_curr = d_nblocks-1;
|
|
d_outstanding_write = 0;
|
|
d_input_leftover =0;
|
|
d_output_short = 0;
|
|
|
|
if (d_input_p){ // fire off all the reads
|
|
int i;
|
|
|
|
for (i=0; i<d_nblocks; i++) {
|
|
usb_submit_async(d_context[i], (char * ) d_buffer+i*d_block_size,
|
|
d_block_size);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
fusb_ephandle_win32::stop ()
|
|
{
|
|
if (!d_started)
|
|
return true;
|
|
|
|
if (!d_input_p)
|
|
wait_for_completion ();
|
|
|
|
d_started = false;
|
|
return true;
|
|
}
|
|
|
|
int
|
|
fusb_ephandle_win32::write (const void *buffer, int nbytes)
|
|
{
|
|
int retval=0;
|
|
char *buf;
|
|
|
|
if (!d_started) // doesn't matter here, but keeps semantics constant
|
|
return -1;
|
|
|
|
if (d_input_p)
|
|
return -1;
|
|
|
|
int bytes_to_write = nbytes;
|
|
int a=0;
|
|
|
|
if (d_output_short != 0) {
|
|
|
|
buf = &d_buffer[d_curr*d_block_size + d_block_size - d_output_short];
|
|
a = std::min(nbytes, d_output_short);
|
|
memcpy(buf, buffer, a);
|
|
bytes_to_write -= a;
|
|
d_output_short -= a;
|
|
|
|
if (d_output_short == 0)
|
|
usb_submit_async(d_context[d_curr],
|
|
&d_buffer[d_curr*d_block_size], d_block_size);
|
|
}
|
|
|
|
while (bytes_to_write > 0) {
|
|
d_curr = (d_curr+1)%d_nblocks;
|
|
buf = &d_buffer[d_curr*d_block_size];
|
|
|
|
if (d_outstanding_write != d_nblocks) {
|
|
d_outstanding_write++;
|
|
} else {
|
|
retval = usb_reap_async(d_context[d_curr], USB_TIMEOUT);
|
|
if (retval < 0) {
|
|
fprintf(stderr, "%s: usb_reap_async: %s\n",
|
|
__FUNCTION__, usb_strerror());
|
|
return retval;
|
|
}
|
|
}
|
|
|
|
int ncopy = std::min(bytes_to_write, d_block_size);
|
|
memcpy(buf, (void *) &(((char*)buffer)[a]), ncopy);
|
|
bytes_to_write -= ncopy;
|
|
a += ncopy;
|
|
|
|
d_output_short = d_block_size - ncopy;
|
|
if (d_output_short == 0)
|
|
usb_submit_async(d_context[d_curr], buf, d_block_size);
|
|
}
|
|
|
|
return retval < 0 ? retval : nbytes;
|
|
}
|
|
|
|
int
|
|
fusb_ephandle_win32::read (void *buffer, int nbytes)
|
|
{
|
|
int retval=0;
|
|
char *buf;
|
|
|
|
if (!d_started) // doesn't matter here, but keeps semantics constant
|
|
return -1;
|
|
|
|
if (!d_input_p)
|
|
return -1;
|
|
|
|
int bytes_to_read = nbytes;
|
|
|
|
int a=0;
|
|
if (d_input_leftover != 0) {
|
|
|
|
buf = &d_buffer[d_curr*d_block_size + d_block_size - d_input_leftover];
|
|
a = std::min(nbytes, d_input_leftover);
|
|
memcpy(buffer, buf, a);
|
|
bytes_to_read -= a;
|
|
d_input_leftover -= a;
|
|
|
|
if (d_input_leftover == 0)
|
|
usb_submit_async(d_context[d_curr],
|
|
&d_buffer[d_curr*d_block_size], d_block_size);
|
|
}
|
|
|
|
while (bytes_to_read > 0) {
|
|
|
|
d_curr = (d_curr+1)%d_nblocks;
|
|
buf = &d_buffer[d_curr*d_block_size];
|
|
|
|
retval = usb_reap_async(d_context[d_curr], USB_TIMEOUT);
|
|
if (retval < 0)
|
|
fprintf(stderr, "%s: usb_reap_async: %s\n",
|
|
__FUNCTION__, usb_strerror());
|
|
|
|
int ncopy = std::min(bytes_to_read, d_block_size);
|
|
memcpy((void *) &(((char*)buffer)[a]), buf, ncopy);
|
|
bytes_to_read -= ncopy;
|
|
a += ncopy;
|
|
|
|
d_input_leftover = d_block_size - ncopy;
|
|
if (d_input_leftover == 0)
|
|
usb_submit_async(d_context[d_curr], buf, d_block_size);
|
|
}
|
|
|
|
return retval < 0 ? retval : nbytes;
|
|
}
|
|
|
|
void
|
|
fusb_ephandle_win32::wait_for_completion ()
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<d_outstanding_write; i++) {
|
|
int context_num;
|
|
|
|
context_num = (d_curr+d_outstanding_write+i+1)%d_nblocks;
|
|
usb_reap_async(d_context[context_num], USB_TIMEOUT);
|
|
}
|
|
|
|
d_outstanding_write = 0;
|
|
}
|