bool CvCaptureCAM_Aravis::open( int index )
{
if(create(index)) {
// fetch properties bounds
pixelFormats = arv_camera_get_available_pixel_formats(camera, &pixelFormatsCnt);
arv_camera_get_width_bounds(camera, &widthMin, &widthMax);
arv_camera_get_height_bounds(camera, &heightMin, &heightMax);
arv_camera_set_region(camera, 0, 0, widthMax, heightMax);
if( (fpsAvailable = arv_camera_is_frame_rate_available(camera)) )
arv_camera_get_frame_rate_bounds(camera, &fpsMin, &fpsMax);
if( (gainAvailable = arv_camera_is_gain_available(camera)) )
arv_camera_get_gain_bounds (camera, &gainMin, &gainMax);
if( (exposureAvailable = arv_camera_is_exposure_time_available(camera)) )
arv_camera_get_exposure_time_bounds (camera, &exposureMin, &exposureMax);
// get initial values
pixelFormat = arv_camera_get_pixel_format(camera);
exposure = exposureAvailable ? arv_camera_get_exposure_time(camera) : 0;
gain = gainAvailable ? arv_camera_get_gain(camera) : 0;
fps = arv_camera_get_frame_rate(camera);
return startCapture();
}
return false;
}
static GstCaps *
gst_aravis_get_all_camera_caps (GstAravis *gst_aravis)
{
GstCaps *caps;
gint64 *pixel_formats;
double min_frame_rate, max_frame_rate;
int min_height, min_width;
int max_height, max_width;
unsigned int n_pixel_formats, i;
g_return_val_if_fail (GST_IS_ARAVIS (gst_aravis), NULL);
if (!ARV_IS_CAMERA (gst_aravis->camera))
return NULL;
GST_LOG_OBJECT (gst_aravis, "Get all camera caps");
arv_camera_get_width_bounds (gst_aravis->camera, &min_width, &max_width);
arv_camera_get_height_bounds (gst_aravis->camera, &min_height, &max_height);
pixel_formats = arv_camera_get_available_pixel_formats (gst_aravis->camera, &n_pixel_formats);
arv_camera_get_frame_rate_bounds (gst_aravis->camera, &min_frame_rate, &max_frame_rate);
int min_frame_rate_numerator;
int min_frame_rate_denominator;
gst_util_double_to_fraction (min_frame_rate, &min_frame_rate_numerator, &min_frame_rate_denominator);
int max_frame_rate_numerator;
int max_frame_rate_denominator;
gst_util_double_to_fraction (max_frame_rate, &max_frame_rate_numerator, &max_frame_rate_denominator);
caps = gst_caps_new_empty ();
for (i = 0; i < n_pixel_formats; i++) {
const char *caps_string;
caps_string = arv_pixel_format_to_gst_0_10_caps_string (pixel_formats[i]);
if (caps_string != NULL) {
GstStructure *structure;
structure = gst_structure_from_string (caps_string, NULL);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, min_width, max_width,
"height", GST_TYPE_INT_RANGE, min_height, max_height,
"framerate", GST_TYPE_FRACTION_RANGE,
min_frame_rate_numerator, min_frame_rate_denominator,
max_frame_rate_numerator, max_frame_rate_denominator,
NULL);
gst_caps_append_structure (caps, structure);
}
}
g_free (pixel_formats);
return caps;
}
void
arv_camera_set_frame_rate (ArvCamera *camera, double frame_rate)
{
ArvGcNode *feature;
double minimum;
double maximum;
g_return_if_fail (ARV_IS_CAMERA (camera));
if (frame_rate <= 0.0)
return;
arv_camera_get_frame_rate_bounds(camera, &minimum, &maximum);
if (frame_rate < minimum)
frame_rate = minimum;
if (frame_rate > maximum)
frame_rate = maximum;
switch (camera->priv->vendor) {
case ARV_CAMERA_VENDOR_BASLER:
arv_device_set_string_feature_value (camera->priv->device, "TriggerSelector",
"AcquisitionStart");
arv_device_set_string_feature_value (camera->priv->device, "TriggerMode", "Off");
arv_device_set_string_feature_value (camera->priv->device, "TriggerSelector",
"FrameStart");
arv_device_set_string_feature_value (camera->priv->device, "TriggerMode", "Off");
arv_device_set_integer_feature_value (camera->priv->device, "AcquisitionFrameRateEnable",
1);
arv_device_set_float_feature_value (camera->priv->device, "AcquisitionFrameRateAbs",
frame_rate);
break;
case ARV_CAMERA_VENDOR_PROSILICA:
arv_device_set_string_feature_value (camera->priv->device, "TriggerSelector",
"FrameStart");
arv_device_set_string_feature_value (camera->priv->device, "TriggerMode", "Off");
arv_device_set_float_feature_value (camera->priv->device, "AcquisitionFrameRateAbs",
frame_rate);
break;
case ARV_CAMERA_VENDOR_TIS:
arv_device_set_string_feature_value (camera->priv->device, "TriggerSelector",
"FrameStart");
arv_device_set_string_feature_value (camera->priv->device, "TriggerMode", "Off");
feature = arv_device_get_feature (camera->priv->device, "FPS");
if (ARV_IS_GC_FEATURE_NODE (feature) &&
g_strcmp0 (arv_dom_node_get_node_name (ARV_DOM_NODE (feature)), "Enumeration") == 0) {
gint64 *values;
guint n_values;
guint i;
values = arv_gc_enumeration_get_available_int_values (ARV_GC_ENUMERATION (feature), &n_values, NULL);
for (i = 0; i < n_values; i++) {
if (values[i] > 0) {
double e;
e = (int)((10000000/(double) values[i]) * 100 + 0.5) / 100.0;
if (e == frame_rate) {
arv_gc_enumeration_set_int_value (ARV_GC_ENUMERATION (feature), values[i], NULL);
break;
}
}
}
g_free (values);
} else
arv_device_set_float_feature_value (camera->priv->device, "FPS", frame_rate);
break;
case ARV_CAMERA_VENDOR_DALSA:
case ARV_CAMERA_VENDOR_UNKNOWN:
arv_device_set_string_feature_value (camera->priv->device, "TriggerSelector",
"FrameStart");
arv_device_set_string_feature_value (camera->priv->device, "TriggerMode", "Off");
arv_device_set_float_feature_value (camera->priv->device,
camera->priv->use_acquisition_frame_rate_abs ?
"AcquisitionFrameRateAbs":
"AcquisitionFrameRate", frame_rate);
break;
}
}
