X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fjogshuttle.cpp;h=44517d7745a839db137310c716bb256b90d3c618;hb=937f547e26859d0ef9ddc0ac38d6986ab591b3fd;hp=f9049511dceefcc568ecf037e33c2fdec5b3ea0c;hpb=2b4a438e09bf373960bcd127dcf6701a74b3ee22;p=kdenlive diff --git a/src/jogshuttle.cpp b/src/jogshuttle.cpp index f9049511..44517d77 100644 --- a/src/jogshuttle.cpp +++ b/src/jogshuttle.cpp @@ -26,11 +26,14 @@ #include #include +#include #include #include #include #include +#include +#include #include #define DELAY 10 @@ -66,7 +69,7 @@ #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; @@ -84,32 +87,111 @@ bool ShuttleThread::isWorking() void ShuttleThread::run() { - kDebug() << "------- STARTING SHUTTLE: " << m_device; + 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; + /* 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[64]; + + 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; - if (ioctl(fd, EVIOCGRAB, 1) < 0) { - fprintf(stderr, "Can't get exclusive access on Jog Shuttle FILE DESCRIPTOR\n"); + 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;; + 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); +#if 0 + 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); +#endif + + /* 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) * 64); + 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 < (int)sizeof(EV)) { + fprintf(stderr, "readResult < (int)sizeof(EV)\n"); + /* stop thread */ + stop_me = true; + } else if (readResult % (int)sizeof(EV) != 0) { + fprintf(stderr, "readResult mod (int)sizeof(EV) != 0\n"); + /* stop thread */ + stop_me = true; + } else { + for (int i = 0; i < readResult / (int)sizeof(EV); i++) { + /* process event */ + handle_event(ev[i]); + } + } + } + } + } + kDebug() << "------- STOPPING SHUTTLE: "; + /* close the handle and return thread */ + close(fd); } void ShuttleThread::handle_event(EV ev) @@ -139,7 +221,7 @@ void ShuttleThread::key(unsigned short code, unsigned int value) if (code > 16) return; - kDebug() << "Button PRESSED: " << code; + //kDebug() << "Button PRESSED: " << code; QApplication::postEvent(m_parent, new QEvent((QEvent::Type)(KEY_EVENT_OFFSET + code))); } @@ -199,7 +281,7 @@ void ShuttleThread::jog(unsigned int value) } -JogShuttle::JogShuttle(QString device, QObject *parent) : +JogShuttle::JogShuttle(const QString &device, QObject *parent) : QObject(parent) { initDevice(device); @@ -210,7 +292,7 @@ JogShuttle::~JogShuttle() stopDevice(); } -void JogShuttle::initDevice(QString device) +void JogShuttle::initDevice(const QString &device) { if (m_shuttleProcess.isRunning()) { if (device == m_shuttleProcess.m_device) return; @@ -223,11 +305,11 @@ void JogShuttle::initDevice(QString device) 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()) { @@ -262,7 +344,15 @@ void JogShuttle::customEvent(QEvent* e) emit button(e->type() - KEY_EVENT_OFFSET); } +QString JogShuttle::enumerateDevice(const QString &device) +{ + QDir canonDir(device); + //return QDir::canonicalPath(device); + return canonDir.canonicalPath(); +} // #include "jogshuttle.moc" + +#include "jogshuttle.moc"