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/* -*- c++ -*- */
/*
* Copyright 2007,2008 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <mblock/mblock.h>
#include <mblock/protocol_class.h>
#include <mblock/message.h>
#include <mblock/class_registry.h>
#include <iostream>
#include <cstdio>
#include <sstream>
#include <bitset>
using namespace pmt;
static pmt_t s_in = pmt_intern("in");
static pmt_t s_out = pmt_intern("out");
static pmt_t s_data = pmt_intern("data");
static pmt_t s_ack = pmt_intern("ack");
static pmt_t s_select_pipe = pmt_intern("select-pipe");
static pmt_t s_long0 = pmt_from_long(0);
static pmt_t s_sys_port = pmt_intern("%sys-port");
static pmt_t s_shutdown = pmt_intern("%shutdown");
class qa_disconnect_mux : public mb_mblock
{
mb_port_sptr d_in;
mb_port_sptr d_out;
mb_port_sptr d_cs;
public:
qa_disconnect_mux(mb_runtime *runtime, const std::string &instance_name, pmt_t user_arg);
void initial_transition();
void handle_message(mb_message_sptr msg);
};
qa_disconnect_mux::qa_disconnect_mux(mb_runtime *runtime,
const std::string &instance_name,
pmt_t user_arg)
: mb_mblock(runtime, instance_name, user_arg)
{
d_in = define_port("in", "qa-bitset", false, mb_port::RELAY);
d_out = define_port("out", "qa-bitset", true, mb_port::RELAY);
d_cs = define_port("cs", "qa-disconnect-cs", true, mb_port::EXTERNAL);
define_component("pipeline0", "qa_bitset8", pmt_from_long(0));
define_component("pipeline1", "qa_bitset8", pmt_from_long(8));
}
void
qa_disconnect_mux::initial_transition(){}
void
qa_disconnect_mux::handle_message(mb_message_sptr msg)
{
if (pmt_eq(msg->port_id(), d_cs->port_symbol()) // select-pipe on cs
&& pmt_eq(msg->signal(), s_select_pipe)){
long which_pipe = pmt_to_long(pmt_nth(0, msg->data()));
disconnect_component("pipeline0");
disconnect_component("pipeline1");
switch(which_pipe){
case 0:
connect("self", "in", "pipeline0", "in");
connect("self", "out", "pipeline0", "out");
break;
case 1:
connect("self", "in", "pipeline1", "in");
connect("self", "out", "pipeline1", "out");
break;
}
d_cs->send(s_ack, msg->data());
return;
}
}
REGISTER_MBLOCK_CLASS(qa_disconnect_mux);
// ------------------------------------------------------------------------
class qa_disconnect_top : public mb_mblock
{
enum state_t {
UNINITIALIZED,
WAIT_FOR_ACK,
WAIT_FOR_DATA
};
state_t d_state;
int d_msg_number;
int d_nmsgs_to_send;
mb_port_sptr d_in;
mb_port_sptr d_out;
mb_port_sptr d_cs;
void check_pipe_send_next_msg();
void send_next_msg();
void select_pipe(int n);
// alternate pipes every 128 messages
static int which_pipe(int msg_number) { return (msg_number >> 7) & 0x1; }
bool time_to_switch() { return (d_msg_number & 0x7f) == 0; }
public:
qa_disconnect_top(mb_runtime *runtime, const std::string &instance_name, pmt_t user_arg);
void initial_transition();
void handle_message(mb_message_sptr msg);
};
qa_disconnect_top::qa_disconnect_top(mb_runtime *runtime,
const std::string &instance_name,
pmt_t user_arg)
: mb_mblock(runtime, instance_name, user_arg),
d_state(UNINITIALIZED), d_msg_number(0)
{
d_nmsgs_to_send = pmt_to_long(pmt_nth(0, user_arg));
d_in = define_port("in", "qa-bitset", false, mb_port::INTERNAL);
d_out = define_port("out", "qa-bitset", true, mb_port::INTERNAL);
d_cs = define_port("cs", "qa-disconnect-cs", false, mb_port::INTERNAL);
define_component("mux", "qa_disconnect_mux", PMT_F);
connect("self", "cs", "mux", "cs");
connect("self", "out", "mux", "in");
connect("self", "in", "mux", "out");
}
void
qa_disconnect_top::initial_transition()
{
check_pipe_send_next_msg();
}
void
qa_disconnect_top::handle_message(mb_message_sptr msg)
{
if (0)
std::cerr << "qa_disconnect_top::handle_msg state = "
<< d_state << "\n msg = " << msg << std::endl;
if (pmt_eq(msg->port_id(), d_cs->port_symbol()) // ack on cs
&& pmt_eq(msg->signal(), s_ack)
&& d_state == WAIT_FOR_ACK){
send_next_msg();
return;
}
if (pmt_eq(msg->port_id(), d_in->port_symbol()) // data on in
&& pmt_eq(msg->signal(), s_data)
&& d_state == WAIT_FOR_DATA){
/*
* Confirm that msg passed through the pipe that we expect...
*/
static const long expected_mask[2] = { 0x000000ff, 0x0000ff00 };
long msg_number = pmt_to_long(pmt_car(msg->data()));
long mask = pmt_to_long(pmt_cdr(msg->data()));
if (mask != expected_mask[which_pipe(msg_number)]){
fprintf(stderr, "\nqa_disconnect_top: wrong mask in msg_number = 0x%08lx\n",
msg_number);
fprintf(stderr, " expected = 0x%08lx, actual = 0x%08lx\n",
expected_mask[which_pipe(msg_number)], mask);
shutdown_all(PMT_F);
return;
}
if (msg_number == d_nmsgs_to_send - 1){ // we're done (and were successful)
shutdown_all(PMT_T);
return;
}
check_pipe_send_next_msg();
return;
}
if (pmt_eq(msg->port_id(), s_sys_port) // ignore %shutdown on %sys-port
&& pmt_eq(msg->signal(), s_shutdown))
return;
std::cerr << "qa_disconnect_top: unhandled msg: state = "
<< d_state << "\n msg = " << msg << std::endl;
}
void
qa_disconnect_top::select_pipe(int n)
{
d_cs->send(s_select_pipe, pmt_list1(pmt_from_long(n)));
d_state = WAIT_FOR_ACK;
}
void
qa_disconnect_top::send_next_msg()
{
d_state = WAIT_FOR_DATA;
if (d_msg_number == d_nmsgs_to_send) // we've sent all we're supposed to
return;
d_out->send(s_data, pmt_cons(pmt_from_long(d_msg_number), s_long0));
d_msg_number++;
}
void
qa_disconnect_top::check_pipe_send_next_msg()
{
if (time_to_switch())
select_pipe(which_pipe(d_msg_number));
else
send_next_msg();
}
REGISTER_MBLOCK_CLASS(qa_disconnect_top);
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