mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-23 00:18:37 -05:00
288 lines
8.6 KiB
C++
288 lines
8.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2016 F4EXB //
|
|
// written by Edouard Griffiths //
|
|
// //
|
|
// This program 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 as version 3 of the License, or //
|
|
// //
|
|
// This program 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 V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include <stdlib.h>
|
|
#include <dirent.h>
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <libgen.h>
|
|
|
|
#ifndef __WINDOWS__
|
|
#include <termios.h>
|
|
#include <sys/ioctl.h>
|
|
#include <linux/serial.h>
|
|
#endif
|
|
|
|
#include <QDebug>
|
|
#include <QThread>
|
|
#include <QMutexLocker>
|
|
|
|
#include "audio/audiooutput.h"
|
|
#include "dvserialengine.h"
|
|
#include "dvserialworker.h"
|
|
|
|
DVSerialEngine::DVSerialEngine()
|
|
{
|
|
|
|
}
|
|
|
|
DVSerialEngine::~DVSerialEngine()
|
|
{
|
|
release();
|
|
}
|
|
|
|
#ifdef __WINDOWS__
|
|
void DVSerialEngine::getComList()
|
|
{
|
|
m_comList.clear();
|
|
m_comList8250.clear();
|
|
char comCStr[16];
|
|
|
|
// Arbitrarily set the list to the 20 first COM ports
|
|
for (int i = 1; i <= 20; i++)
|
|
{
|
|
sprintf(comCStr, "COM%d", i);
|
|
m_comList.push_back(std::string(comCStr));
|
|
}
|
|
}
|
|
#else
|
|
std::string DVSerialEngine::get_driver(const std::string& tty)
|
|
{
|
|
struct stat st;
|
|
std::string devicedir = tty;
|
|
|
|
// Append '/device' to the tty-path
|
|
devicedir += "/device";
|
|
|
|
// Stat the devicedir and handle it if it is a symlink
|
|
if (lstat(devicedir.c_str(), &st) == 0 && S_ISLNK(st.st_mode))
|
|
{
|
|
char buffer[1024];
|
|
memset(buffer, 0, sizeof(buffer));
|
|
|
|
// Append '/driver' and return basename of the target
|
|
devicedir += "/driver";
|
|
|
|
if (readlink(devicedir.c_str(), buffer, sizeof(buffer)) > 0)
|
|
{
|
|
return basename(buffer);
|
|
}
|
|
}
|
|
return "";
|
|
}
|
|
|
|
void DVSerialEngine::register_comport(std::list<std::string>& comList,
|
|
std::list<std::string>& comList8250, const std::string& dir)
|
|
{
|
|
// Get the driver the device is using
|
|
std::string driver = get_driver(dir);
|
|
|
|
// Skip devices without a driver
|
|
if (driver.size() > 0)
|
|
{
|
|
//std::cerr << "register_comport: dir: "<< dir << " driver: " << driver << std::endl;
|
|
std::string devfile = std::string("/dev/") + basename((char *) dir.c_str());
|
|
|
|
// Put serial8250-devices in a seperate list
|
|
if (driver == "serial8250")
|
|
{
|
|
comList8250.push_back(devfile);
|
|
}
|
|
else
|
|
comList.push_back(devfile);
|
|
}
|
|
}
|
|
|
|
void DVSerialEngine::probe_serial8250_comports(std::list<std::string>& comList,
|
|
std::list<std::string> comList8250)
|
|
{
|
|
struct serial_struct serinfo;
|
|
std::list<std::string>::iterator it = comList8250.begin();
|
|
|
|
// Iterate over all serial8250-devices
|
|
while (it != comList8250.end())
|
|
{
|
|
|
|
// Try to open the device
|
|
int fd = open((*it).c_str(), O_RDWR | O_NONBLOCK | O_NOCTTY);
|
|
|
|
if (fd >= 0)
|
|
{
|
|
// Get serial_info
|
|
if (ioctl(fd, TIOCGSERIAL, &serinfo) == 0)
|
|
{
|
|
// If device type is no PORT_UNKNOWN we accept the port
|
|
if (serinfo.type != PORT_UNKNOWN)
|
|
comList.push_back(*it);
|
|
}
|
|
close(fd);
|
|
}
|
|
it++;
|
|
}
|
|
}
|
|
|
|
void DVSerialEngine::getComList()
|
|
{
|
|
int n;
|
|
struct dirent **namelist;
|
|
m_comList.clear();
|
|
m_comList8250.clear();
|
|
const char* sysdir = "/sys/class/tty/";
|
|
|
|
// Scan through /sys/class/tty - it contains all tty-devices in the system
|
|
n = scandir(sysdir, &namelist, NULL, NULL);
|
|
if (n < 0)
|
|
perror("scandir");
|
|
else
|
|
{
|
|
while (n--)
|
|
{
|
|
if (strcmp(namelist[n]->d_name, "..")
|
|
&& strcmp(namelist[n]->d_name, "."))
|
|
{
|
|
|
|
// Construct full absolute file path
|
|
std::string devicedir = sysdir;
|
|
devicedir += namelist[n]->d_name;
|
|
|
|
// Register the device
|
|
register_comport(m_comList, m_comList8250, devicedir);
|
|
}
|
|
free(namelist[n]);
|
|
}
|
|
free(namelist);
|
|
}
|
|
|
|
// Only non-serial8250 has been added to comList without any further testing
|
|
// serial8250-devices must be probe to check for validity
|
|
probe_serial8250_comports(m_comList, m_comList8250);
|
|
}
|
|
#endif // __WINDOWS__
|
|
|
|
bool DVSerialEngine::scan()
|
|
{
|
|
getComList();
|
|
std::list<std::string>::iterator it = m_comList.begin();
|
|
|
|
while (it != m_comList.end())
|
|
{
|
|
DVSerialWorker *worker = new DVSerialWorker();
|
|
|
|
if (worker->open(*it))
|
|
{
|
|
DVSerialController controller;
|
|
controller.worker = worker;
|
|
controller.device = *it;
|
|
controller.thread = new QThread();
|
|
|
|
controller.worker->moveToThread(controller.thread);
|
|
connect(controller.thread, SIGNAL(started()), controller.worker, SLOT(process()));
|
|
connect(controller.worker, SIGNAL(finished()), controller.thread, SLOT(quit()));
|
|
connect(controller.worker, SIGNAL(finished()), controller.worker, SLOT(deleteLater()));
|
|
connect(controller.thread, SIGNAL(finished()), controller.thread, SLOT(deleteLater()));
|
|
connect(&controller.worker->m_inputMessageQueue, SIGNAL(messageEnqueued()), controller.worker, SLOT(handleInputMessages()));
|
|
controller.thread->start();
|
|
|
|
m_controllers.push_back(controller);
|
|
qDebug() << "DVSerialEngine::scan: found device at: " << it->c_str();
|
|
}
|
|
else
|
|
{
|
|
delete worker;
|
|
}
|
|
|
|
it++;
|
|
}
|
|
|
|
return m_controllers.size() > 0;
|
|
}
|
|
|
|
void DVSerialEngine::release()
|
|
{
|
|
qDebug("DVSerialEngine::release");
|
|
std::vector<DVSerialController>::iterator it = m_controllers.begin();
|
|
|
|
while (it != m_controllers.end())
|
|
{
|
|
disconnect(&it->worker->m_inputMessageQueue, SIGNAL(messageEnqueued()), it->worker, SLOT(handleInputMessages()));
|
|
it->worker->stop();
|
|
it->thread->wait(100);
|
|
it->worker->m_inputMessageQueue.clear();
|
|
it->worker->close();
|
|
qDebug() << "DVSerialEngine::release: closed device at: " << it->device.c_str();
|
|
++it;
|
|
}
|
|
|
|
m_controllers.clear();
|
|
}
|
|
|
|
void DVSerialEngine::getDevicesNames(std::vector<std::string>& deviceNames)
|
|
{
|
|
std::vector<DVSerialController>::iterator it = m_controllers.begin();
|
|
|
|
while (it != m_controllers.end())
|
|
{
|
|
deviceNames.push_back(it->device);
|
|
++it;
|
|
}
|
|
}
|
|
|
|
void DVSerialEngine::pushMbeFrame(const unsigned char *mbeFrame, int mbeRateIndex, int mbeVolumeIndex, unsigned char channels, AudioFifo *audioFifo)
|
|
{
|
|
std::vector<DVSerialController>::iterator it = m_controllers.begin();
|
|
std::vector<DVSerialController>::iterator itAvail = m_controllers.end();
|
|
bool done = false;
|
|
unsigned int fifoSlot;
|
|
QMutexLocker locker(&m_mutex);
|
|
|
|
while (it != m_controllers.end())
|
|
{
|
|
if (it->worker->hasFifo(audioFifo, fifoSlot))
|
|
{
|
|
it->worker->pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, audioFifo, fifoSlot);
|
|
done = true;
|
|
break;
|
|
}
|
|
else if (it->worker->isAvailable(fifoSlot))
|
|
{
|
|
itAvail = it;
|
|
break;
|
|
}
|
|
|
|
++it;
|
|
}
|
|
|
|
if (!done)
|
|
{
|
|
if (itAvail != m_controllers.end())
|
|
{
|
|
int wNum = itAvail - m_controllers.begin();
|
|
|
|
qDebug("DVSerialEngine::pushMbeFrame: push %p on empty queue %d", audioFifo, wNum);
|
|
itAvail->worker->pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, audioFifo, fifoSlot);
|
|
}
|
|
else
|
|
{
|
|
qDebug("DVSerialEngine::pushMbeFrame: no DV serial device available. MBE frame dropped");
|
|
}
|
|
}
|
|
}
|