X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fjogshuttle.cpp;h=6a61812e8b927d5cfad461961ef8ceb185b7d895;hb=5bcb9b7ead3d053cb2b0498d84a2622626bf7f14;hp=752869a721b57e8ee58c374817f736478a9cf6c6;hpb=a0b31d454dcbbd7c31f1dca4cd22c71da61e8920;p=kdenlive diff --git a/src/jogshuttle.cpp b/src/jogshuttle.cpp index 752869a7..6a61812e 100644 --- a/src/jogshuttle.cpp +++ b/src/jogshuttle.cpp @@ -31,6 +31,8 @@ #include #include #include +#include +#include #include #define DELAY 10 @@ -60,23 +62,20 @@ // Constants for the signals sent. #define JOG_BACK1 10001 #define JOG_FWD1 10002 +#define KEY_EVENT_OFFSET 20000 // middle value for shuttle, will be +/-MAX_SHUTTLE_RANGE -#define JOG_STOP 10010 +#define JOG_STOP 10020 #define MAX_SHUTTLE_RANGE 7 -// TODO(fleury): this should probably be a user configuration parameter (at least the max speed). -const double SPEEDS[MAX_SHUTTLE_RANGE + 1] = {0.0, 0.5, 1.0, 2.0, 4.0, 8.0, 16.0, 32.0}; - - -void ShuttleThread::init(QObject *parent, QString device) +void ShuttleThread::init(QObject *parent, const QString &device) { m_parent = parent; m_device = device; stop_me = false; m_isWorking = false; shuttlevalue = 0xffff; - shuttlechange = false; + shuttlecounter = 0; jogvalue = 0xffff; } @@ -87,31 +86,98 @@ bool ShuttleThread::isWorking() void ShuttleThread::run() { - kDebug() << "------- STARTING SHUTTLE: " << m_device; - - 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; - - if (ioctl(fd, EVIOCGRAB, 1) < 0) { - fprintf(stderr, "Can't get exclusive access on Jog Shuttle FILE DESCRIPTOR\n"); - return;; - } - - int num_warnings = 0; - while (!stop_me) { - if (read(fd, &ev, sizeof(ev)) < 0) { - if (num_warnings % 100 == 0) - fprintf(stderr, "Failed to read event from Jog Shuttle FILE DESCRIPTOR (repeated %d times)\n", num_warnings + 1); - num_warnings++; - } - handle_event(ev); + 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; + } + + EV ev; + + if (ioctl(fd, EVIOCGRAB, 1) < 0) { + fprintf(stderr, "Can't get exclusive access on Jog Shuttle FILE DESCRIPTOR\n"); + close(fd); + return; + } + + 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) { + fprintf(stderr, "Can't get Jog Shuttle file status\n"); + close(fd); + return; + } else if (fcntl(fd, F_SETFL, iof | O_NONBLOCK) == -1) { + fprintf(stderr, "Can't set Jog Shuttle FILE DESCRIPTOR to O_NONBLOCK and stop thread\n"); + close(fd); + return; } - close(fd); + /* 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) @@ -141,8 +207,8 @@ void ShuttleThread::key(unsigned short code, unsigned int value) if (code > 16) return; - kDebug() << "Button PRESSED: " << code; - QApplication::postEvent(m_parent, new QEvent((QEvent::Type)(20000 + code))); + //kDebug() << "Button PRESSED: " << code; + QApplication::postEvent(m_parent, new QEvent((QEvent::Type)(KEY_EVENT_OFFSET + code))); } @@ -151,16 +217,18 @@ void ShuttleThread::shuttle(int value) //gettimeofday( &last_shuttle, 0 ); //need_synthetic_shuttle = value != 0; - if (value == shuttlevalue) + if (value == shuttlevalue) { + shuttlecounter = 1; return; + } if (value > MAX_SHUTTLE_RANGE || value < -MAX_SHUTTLE_RANGE) { fprintf(stderr, "Jog Shuttle returned value of %d (should be between -%d ad +%d)", value, MAX_SHUTTLE_RANGE, MAX_SHUTTLE_RANGE); return; } shuttlevalue = value; - shuttlechange = true; - QApplication::postEvent(m_parent, new QEvent((QEvent::Type)(JOG_STOP + value))); + shuttlecounter = 1; + QApplication::postEvent(m_parent, new QEvent((QEvent::Type) (JOG_STOP + value))); } void ShuttleThread::jog(unsigned int value) @@ -186,18 +254,20 @@ void ShuttleThread::jog(unsigned int value) QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_BACK1)); else if ((forward && !wrap) || (rewind && wrap)) QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_FWD1)); - else if (!forward && !rewind && !shuttlechange) + else if (!forward && !rewind && shuttlecounter > 2) { // An event without changing the jog value is sent after each shuttle change. // As the shuttle rest position does not get a shuttle event, only a non-position-changing jog event. // Hence we stop on this when we see 2 non-position-changing jog events in a row. + shuttlecounter = 0; QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_STOP)); + } } jogvalue = value; - shuttlechange = false; + if (shuttlecounter > 0) shuttlecounter++; } -JogShuttle::JogShuttle(QString device, QObject *parent) : +JogShuttle::JogShuttle(const QString &device, QObject *parent) : QObject(parent) { initDevice(device); @@ -205,10 +275,10 @@ JogShuttle::JogShuttle(QString device, QObject *parent) : JogShuttle::~JogShuttle() { - if (m_shuttleProcess.isRunning()) m_shuttleProcess.exit(); + stopDevice(); } -void JogShuttle::initDevice(QString device) +void JogShuttle::initDevice(const QString &device) { if (m_shuttleProcess.isRunning()) { if (device == m_shuttleProcess.m_device) return; @@ -220,48 +290,49 @@ void JogShuttle::initDevice(QString device) void JogShuttle::stopDevice() { - if (m_shuttleProcess.isRunning()) + if (m_shuttleProcess.isRunning()) { + /* tell thread to stop */ m_shuttleProcess.stop_me = true; + m_shuttleProcess.exit(); + /* 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()) { + m_shuttleProcess.terminate(); + kDebug() << "/// terminate jogshuttle process\n"; + } + } } void JogShuttle::customEvent(QEvent* e) { int code = e->type(); - // Handle the job events - if (code == JOG_BACK1) { - emit rewind1(); + // Handle simple job events + switch (code) { + case JOG_BACK1: + emit jogBack(); return; - } - if (code == JOG_FWD1) { - emit forward1(); + case JOG_FWD1: + emit jogForward(); return; } - //handle the shuttle events - if (code == JOG_STOP) { - // TODO(fleury): to make sure stop() has an effect, as it doesn't when in rewind mode, we set it to forward with - // a value that will for sure not move to the next frame. - if (m_shuttleProcess.shuttlevalue < 0) - emit forward(0.01); - emit stop(); - return; - } - - int shuttle = code - JOG_STOP; - if (shuttle >= -MAX_SHUTTLE_RANGE && shuttle <= MAX_SHUTTLE_RANGE) { - if (shuttle < 0) - emit rewind(-SPEEDS[abs(shuttle)]); - else - emit forward(SPEEDS[abs(shuttle)]); + int shuttle_pos = code - JOG_STOP; + if (shuttle_pos >= -MAX_SHUTTLE_RANGE && shuttle_pos <= MAX_SHUTTLE_RANGE) { + emit shuttlePos(shuttle_pos); return; } // we've got a key event. - emit button(e->type() - 20000); + //fprintf(stderr, "Firing button event for #%d\n", e->type() - KEY_EVENT_OFFSET); // DBG + emit button(e->type() - KEY_EVENT_OFFSET); } // #include "jogshuttle.moc" + +#include "jogshuttle.moc"