#include <fcntl.h>
#include <linux/input.h>
-
#define DELAY 10
#define KEY 1
#define KEY14 269
#define KEY15 270
+// Constants for the returned events when reading them from the device
#define JOGSHUTTLE 2
#define JOG 7
#define SHUTTLE 8
+// Constants for the signals sent.
#define JOG_BACK1 10001
#define JOG_FWD1 10002
-#define JOG_FWD 10003
-#define JOG_FWD_SLOW 10004
-#define JOG_FWD_FAST 10005
-#define JOG_BACK 10006
-#define JOG_BACK_SLOW 10007
-#define JOG_BACK_FAST 10008
-#define JOG_STOP 10009
+
+// middle value for shuttle, will be +/-MAX_SHUTTLE_RANGE
+#define JOG_STOP 10010
+#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)
stop_me = false;
m_isWorking = false;
shuttlevalue = 0xffff;
+ shuttlechange = false;
jogvalue = 0xffff;
}
return;;
}
+ int num_warnings = 0;
while (!stop_me) {
if (read(fd, &ev, sizeof(ev)) < 0) {
- fprintf(stderr, "Failed to read event from Jog Shuttle FILE DESCRIPTOR\n");
+ 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);
}
key(ev.code, ev.value);
break;
case JOGSHUTTLE :
- jogshuttle(ev.code, ev.value);
+ if (ev.code == JOG)
+ jog(ev.value);
+ if (ev.code == SHUTTLE)
+ shuttle(ev.value);
break;
}
}
return;
}
+ // Check key index
code -= KEY1 - 1;
-
- // Bound check!
if (code > 16)
return;
if (value == shuttlevalue)
return;
- shuttlevalue = value;
- switch (value) {
- case - 7 :
- case - 6 :
- case - 5 :
- case - 4 :
- case - 3 :
- QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_BACK_FAST));
- break; // Reverse fast
- case - 2 :
- QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_BACK));
- break; // Reverse
- case - 1 :
- QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_BACK_SLOW));
- break; // Reverse slow
- case 0 :
- QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_STOP));
- break; // Stop!
- case 1 :
- QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_FWD_SLOW));
- break; // Forward slow
- case 2 :
- QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_FWD));
- break; // Normal play
- case 3 :
- case 4 :
- case 5 :
- case 6 :
- case 7 :
- QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_FWD_FAST));
- break; // Fast forward
- }
+ 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)));
}
void ShuttleThread::jog(unsigned int value)
{
- // We should generate a synthetic event for the shuttle going
- // to the home position if we have not seen one recently
- //check_synthetic();
-
+ // generate a synthetic event for the shuttle going
+ // to the home position if we have not seen one recently.
+ //if (shuttlevalue != 0) {
+ // QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_STOP));
+ // shuttlevalue = 0;
+ //}
+
+ // This code takes care of wrapping around the limits of the jog dial number (it is represented as a single byte, hence
+ // wraps at the 0/255 boundary). I used 25 as the difference to make sure that even in heavy load, with the jog dial
+ // turning fast and we miss some events that we do not mistakenly reverse the direction.
+ // Note also that at least the Contour ShuttlePRO v2 does not send an event for the value 0, so at the wrap it will
+ // need 2 events to go forward. But that is nothing we can do about...
if (jogvalue != 0xffff) {
- if (value < jogvalue)
+ //fprintf(stderr, "value=%d jogvalue=%d\n", value, jogvalue);
+ bool wrap = abs(value - jogvalue) > 25;
+ bool rewind = value < jogvalue;
+ bool forward = value > jogvalue;
+ if ((rewind && !wrap) || (forward && wrap))
QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_BACK1));
- else if (value > jogvalue)
+ else if ((forward && !wrap) || (rewind && wrap))
QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_FWD1));
+ else if (!forward && !rewind && !shuttlechange)
+ // 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.
+ QApplication::postEvent(m_parent, new QEvent((QEvent::Type) JOG_STOP));
}
jogvalue = value;
-}
-
-
-void ShuttleThread::jogshuttle(unsigned short code, unsigned int value)
-{
- switch (code) {
- case JOG :
- jog(value);
- break;
- case SHUTTLE :
- shuttle(value);
- break;
- }
+ shuttlechange = false;
}
void JogShuttle::initDevice(QString device)
{
- if (m_shuttleProcess.isRunning()) return;
+ if (m_shuttleProcess.isRunning()) {
+ if (device == m_shuttleProcess.m_device) return;
+ stopDevice();
+ }
m_shuttleProcess.init(this, device);
m_shuttleProcess.start(QThread::LowestPriority);
}
void JogShuttle::stopDevice()
{
- if (m_shuttleProcess.isRunning()) m_shuttleProcess.stop_me = true;
+ if (m_shuttleProcess.isRunning())
+ m_shuttleProcess.stop_me = true;
}
void JogShuttle::customEvent(QEvent* e)
{
- switch (e->type()) {
- case JOG_BACK1:
+ int code = e->type();
+
+ // Handle the job events
+ if (code == JOG_BACK1) {
emit rewind1();
- break;
- case JOG_FWD1:
+ return;
+ }
+ if (code == JOG_FWD1) {
emit forward1();
- break;
- case JOG_BACK:
- emit rewind(-1);
- break;
- case JOG_FWD:
- emit forward(1);
- break;
- case JOG_BACK_SLOW:
- emit rewind(-0.5);
- break;
- case JOG_FWD_SLOW:
- emit forward(0.5);
- break;
- case JOG_BACK_FAST:
- emit rewind(-2);
- break;
- case JOG_FWD_FAST:
- emit forward(2);
- break;
- case JOG_STOP:
+ 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();
- break;
- default:
- emit button(e->type() - 20000);
+ 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)]);
+ return;
+ }
+
+ // we've got a key event.
+ emit button(e->type() - 20000);
}
projects / kdenlive / commitdiff