#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
#include <linux/input.h>
#define DELAY 10
#define JOG_STOP 10020
#define MAX_SHUTTLE_RANGE 7
-void ShuttleThread::init(QObject *parent, QString device)
+void ShuttleThread::init(QObject *parent, const QString &device)
{
m_parent = parent;
m_device = device;
void ShuttleThread::run()
{
- kDebug() << "------- STARTING SHUTTLE: " << m_device;
+ kDebug() << "------- STARTING SHUTTLE: " << m_device;
+ /* open file descriptor */
+ const int fd = KDE_open((char *) m_device.toUtf8().data(), O_RDONLY);
+ if (fd < 0) {
+ perror("Can't open Jog Shuttle FILE DESCRIPTOR");
+ return;
+ }
- const int fd = KDE_open((char *) m_device.toUtf8().data(), O_RDONLY);
- if (fd < 0) {
- fprintf(stderr, "Can't open Jog Shuttle FILE DESCRIPTOR\n");
- return;;
- }
- EV ev;
+ EV ev;
- if (ioctl(fd, EVIOCGRAB, 1) < 0) {
- fprintf(stderr, "Can't get exclusive access on Jog Shuttle FILE DESCRIPTOR\n");
- close(fd);
- return;;
- }
+ if (ioctl(fd, EVIOCGRAB, 1) < 0) {
+ fprintf(stderr, "Can't get exclusive access on Jog Shuttle FILE DESCRIPTOR\n");
+ close(fd);
+ return;
+ }
- int num_warnings = 0;
- while (!stop_me) {
- if (read(fd, &ev, sizeof(ev)) < 0) {
- if (num_warnings % 10000 == 0)
- fprintf(stderr, "Failed to read event from Jog Shuttle FILE DESCRIPTOR (repeated %d times)\n", num_warnings + 1);
- num_warnings++;
- }
- handle_event(ev);
- }
- close(fd);
+ fd_set readset;
+ struct timeval timeout;
+ int num_warnings = 0, readResult = 0;
+ int result, iof = -1;
+
+ /* get fd settings */
+ if ((iof = fcntl(fd, F_GETFL, 0)) != -1) {
+ /* set fd non blocking */
+ fcntl(fd, F_SETFL, iof | O_NONBLOCK);
+ } else {
+ fprintf(stderr, "Can't set Jog Shuttle FILE DESCRIPTOR to O_NONBLOCK and stop thread\n");
+ return;
+ }
+
+ /* enter thread loop */
+ while (!stop_me) {
+ /* reset the read set */
+ FD_ZERO(&readset);
+ FD_SET(fd, &readset);
+
+ /* reinit the timeout structure */
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 400000; /* 400 ms */
+
+ /* do select in blocked mode and wake up after timeout for eval stop_me */
+ result = select(fd+1, &readset, NULL, NULL, &timeout);
+
+ /* see if there was an error or timeout else process event */
+ if (result < 0 && errno == EINTR) {
+ /* EINTR event catched. This is not a problem - continue processing */
+ kDebug() << strerror(errno) << "\n";
+ /* continue processing */
+ continue;
+ } else if (result < 0) {
+ /* stop thread */
+ stop_me = true;
+ kDebug() << strerror(errno) << "\n";
+ } else if (result == 0) {
+ /* do nothing. reserved for future purposes */
+ } else {
+ /* we have input */
+ if (FD_ISSET(fd, &readset)) {
+ /* read input */
+ readResult = read(fd, &ev, sizeof(ev));
+ if (readResult < 0) {
+ if (num_warnings % 10000 == 0) {
+ /* if device is not available anymore - dead or disconnected */
+ fprintf(stderr, "Failed to read event from Jog Shuttle FILE DESCRIPTOR (repeated %d times)\n", num_warnings + 1);
+ }
+ /* exit if device is not available or the error occurs to long */
+ if (errno == ENODEV) {
+ perror("Failed to read from Jog Shuttle FILE DESCRIPTOR. Stop thread");
+ /* stop thread */
+ stop_me = true;
+ } else if (num_warnings > 1000000) {
+ perror("Failed to read from Jog Shuttle FILE DESCRIPTOR. Limit reached. Stop thread");
+ /* stop thread */
+ stop_me = true;
+ }
+ num_warnings++;
+ } else if (readResult == sizeof(ev)) {
+ /* process event */
+ handle_event(ev);
+ } else {
+ fprintf(stderr, "Read nr of bytes != sizeof(ev)\n");
+ }
+ }
+ }
+ }
+
+// kDebug() << "Close thread" << "\n";
+ /* close the handle and return thread */
+ close(fd);
}
void ShuttleThread::handle_event(EV ev)
if (code > 16)
return;
- kDebug() << "Button PRESSED: " << code;
+ //kDebug() << "Button PRESSED: " << code;
QApplication::postEvent(m_parent, new QEvent((QEvent::Type)(KEY_EVENT_OFFSET + code)));
}
}
-JogShuttle::JogShuttle(QString device, QObject *parent) :
+JogShuttle::JogShuttle(const QString &device, QObject *parent) :
QObject(parent)
{
initDevice(device);
stopDevice();
}
-void JogShuttle::initDevice(QString device)
+void JogShuttle::initDevice(const QString &device)
{
if (m_shuttleProcess.isRunning()) {
if (device == m_shuttleProcess.m_device) return;
void JogShuttle::stopDevice()
{
if (m_shuttleProcess.isRunning()) {
- /* the read fd is in blocking mode => stop_me is broken at the moment */
+ /* tell thread to stop */
m_shuttleProcess.stop_me = true;
m_shuttleProcess.exit();
- /* give the thread some time to shutdown */
- m_shuttleProcess.wait(100);
+ /* give the thread some time (ms) to shutdown */
+ m_shuttleProcess.wait(600);
/* if still running - do it in the hardcore way */
if (m_shuttleProcess.isRunning()) {
// #include "jogshuttle.moc"
+
+#include "jogshuttle.moc"
projects / kdenlive / blobdiff