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Aravis fixes #26

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Aravis fixes #26

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2aa41c9
destroy stream object before camera object
xiaoqiangwang Oct 21, 2023
c3b3808
update device list before making connections
xiaoqiangwang Oct 21, 2023
7b2deb7
disable stream signal before destroy
xiaoqiangwang Oct 23, 2023
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16 changes: 10 additions & 6 deletions aravisApp/src/ADAravis.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,7 @@ class ADAravis : public ADGenICam, epicsThreadRunable {

/** Used by epicsAtExit */
ArvCamera *camera;
ArvStream *stream;

/** Used by connection lost callback */
int connectionValid;
Expand Down Expand Up @@ -196,7 +197,6 @@ class ADAravis : public ADGenICam, epicsThreadRunable {
asynStatus makeCameraObject();
asynStatus makeStreamObject();

ArvStream *stream;
ArvDevice *device;
ArvGc *genicam;
char *cameraName;
Expand All @@ -221,13 +221,14 @@ GenICamFeature *ADAravis::createFeature(GenICamFeatureSet *set,
static void aravisShutdown(void* arg) {
ADAravis *pPvt = (ADAravis *) arg;
GErrorHelper err;
ArvCamera *cam = pPvt->camera;

printf("ADAravis: Stopping %s... ", pPvt->portName);
arv_camera_stop_acquisition(cam, err.get());
arv_camera_stop_acquisition(pPvt->camera, err.get());
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On a general note, passing the error parameter without checking if it NULL first can lead to errors from the Aravis library. I need to check how this is handled elsewhere, but without that, it feels like there's maybe something missing

pPvt->connectionValid = 0;
epicsThreadSleep(0.1);
pPvt->camera = NULL;
g_object_unref(cam);
arv_stream_set_emit_signals (pPvt->stream, FALSE);
g_clear_object(&pPvt->stream);
g_clear_object(&pPvt->camera);
printf("ADAravis: OK\n");
}

Expand Down Expand Up @@ -313,8 +314,8 @@ ADAravis::ADAravis(const char *portName, const char *cameraName, int enableCachi

: ADGenICam(portName, maxMemory, priority, stackSize),
camera(NULL),
connectionValid(0),
stream(NULL),
connectionValid(0),
device(NULL),
genicam(NULL),
payload(0),
Expand Down Expand Up @@ -526,6 +527,9 @@ asynStatus ADAravis::connectToCamera() {
/* Tell areaDetector it is no longer acquiring */
setIntegerParam(ADAcquire, 0);

/* update device list */
arv_update_device_list();

/* make the camera object */
status = this->makeCameraObject();
if (status) return status;
Expand Down