ROI FastCMOS::getROI()
{
ROI r;
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ROI_LEFT, &r.x));
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ROI_TOP, &r.y));
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ROI_WIDTH, &r.w));
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ROI_HEIGHT, &r.h));
return r;
}
ROI FastCMOS::getAcqWindow()
{
ROI roi;
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ACQWINDOW_LEFT, &roi.x));
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ACQWINDOW_TOP, &roi.y));
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ACQWINDOW_WIDTH, &roi.w));
checkIMAQ(imgGetAttribute(session, IMG_ATTR_ACQWINDOW_HEIGHT, &roi.h));
return roi;
}
int FastCMOS::getFramecount()
{
uInt32 v;
checkIMAQ(imgGetAttribute(session, IMG_ATTR_FRAME_COUNT, &v));
return v;
}
int FastCMOS::getLostFrames()
{
uInt32 lost;
checkIMAQ(imgGetAttribute(session, IMG_ATTR_LOST_FRAMES, &lost));
return lost;
}
/**
* gst_niimaqsrc_get_cam_caps:
* src: #GstNiImaq instance
*
* Get caps of camera attached to open IMAQ interface
*
* Returns: the #GstCaps of the src pad. Unref the caps when you no longer need it.
*/
GstCaps *
gst_niimaqsrc_get_cam_caps (GstNiImaqSrc * src)
{
GstCaps *gcaps = NULL;
Int32 rval;
uInt32 val;
gint depth, bpp;
GstVideoInfo vinfo;
if (!src->iid) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("Camera interface not open"), ("Camera interface not open"));
goto error;
}
gst_video_info_init (&vinfo);
GST_LOG_OBJECT (src, "Retrieving attributes from IMAQ interface");
rval = imgGetAttribute (src->iid, IMG_ATTR_BITSPERPIXEL, &val);
gst_niimaqsrc_report_imaq_error (rval);
bpp = val;
rval &= imgGetAttribute (src->iid, IMG_ATTR_BYTESPERPIXEL, &val);
gst_niimaqsrc_report_imaq_error (rval);
depth = val * 8;
rval &= imgGetAttribute (src->iid, IMG_ATTR_ROI_WIDTH, &val);
gst_niimaqsrc_report_imaq_error (rval);
vinfo.width = val;
rval &= imgGetAttribute (src->iid, IMG_ATTR_ROI_HEIGHT, &val);
gst_niimaqsrc_report_imaq_error (rval);
vinfo.height = val;
if (rval) {
GST_ELEMENT_ERROR (src, STREAM, FAILED,
("attempt to read attributes failed"),
("attempt to read attributes failed"));
goto error;
}
if (depth == 8)
vinfo.finfo = gst_video_format_get_info (GST_VIDEO_FORMAT_GRAY8);
else if (depth == 16)
vinfo.finfo = gst_video_format_get_info (GST_VIDEO_FORMAT_GRAY16_LE);
else if (depth == 32)
vinfo.finfo = gst_video_format_get_info (GST_VIDEO_FORMAT_BGRA);
else {
GST_ERROR_OBJECT (src, "Depth %d (%d-bit) not supported yet", depth, bpp);
goto error;
}
vinfo.fps_n = 30;
vinfo.fps_d = 1;
/* hard code framerate and par as IMAQ doesn't tell us anything about it */
gcaps = gst_video_info_to_caps (&vinfo);
GST_LOG_OBJECT (src, "the camera caps are %" GST_PTR_FORMAT, gcaps);
return gcaps;
error:
if (gcaps) {
gst_caps_unref (gcaps);
}
return NULL;
}
/**
* gst_niimaqsrc_class_probe_interfaces:
* @klass: #GstNiImaqClass
* @check: whether to enumerate interfaces
*
* Probes NI-IMAQ driver for available interfaces
*
* Returns: TRUE always
*/
static gboolean
gst_niimaqsrc_class_probe_interfaces (GstNiImaqSrcClass * klass, gboolean check)
{
if (!check) {
guint32 n;
gchar name[256];
/* clear interface list */
while (interfaces) {
gchar *iface = interfaces->data;
interfaces = g_list_remove (interfaces, iface);
g_free (iface);
}
GST_LOG_OBJECT (klass, "About to probe for IMAQ interfaces");
/* enumerate interfaces, limiting ourselves to the first 64 */
for (n = 0; n < 64; n++) {
guint32 iid;
guint32 nports;
guint32 port;
gchar *iname;
uInt32 rval;
/* get interface names until there are no more */
if (rval = imgInterfaceQueryNames (n, name) != 0) {
gst_niimaqsrc_report_imaq_error (rval);
break;
}
/* ignore NICFGen */
if (g_strcmp0 (name, "NICFGen.iid") == 0)
continue;
/* try and open the interface */
if (rval = imgInterfaceOpen (name, &iid) != 0) {
gst_niimaqsrc_report_imaq_error (rval);
continue;
}
/* find how many ports the interface provides */
rval = imgGetAttribute (iid, IMG_ATTR_NUM_PORTS, &nports);
gst_niimaqsrc_report_imaq_error (rval);
rval = imgClose (iid, TRUE);
gst_niimaqsrc_report_imaq_error (rval);
/* iterate over all the available ports */
for (port = 0; port < nports; port++) {
/* if the there are multiple ports append the port number */
if (nports > 1)
iname = g_strdup_printf ("%s::%d", name, port);
else
iname = g_strdup (name);
/* TODO: should check to see if a camera is actually attached */
interfaces = g_list_append (interfaces, iname);
GST_DEBUG_OBJECT (klass, "Adding interface '%s' to list", iname);
}
}
init = TRUE;
}
klass->interfaces = interfaces;
return init;
}
