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dewarp: Store C++ types as pointers in C structs

Browse source 
Otherwise the destructor will never be called, and we would have to call
the constructors manually at some point... which we never did, so
calling release() on it before it got otherwise initialized caused a
crash. For example when running gst-inspect-1.0.
This commit is contained in:
Sebastian Dröge 2017-02-01 13:44:37 +02:00
parent d7bb3b5542
commit 718c4140fa
2 changed files with 23 additions and 11 deletions
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30
ext/opencv/gstdewarp.cpp
View file

@ -161,8 +161,16 @@ static void
gst_dewarp_finalize (GObject * obj)
{
GstDewarp *filter = GST_DEWARP (obj);
filter->map_x.release ();
filter->map_y.release ();
if (filter->map_x) {
filter->map_x->release ();
delete filter->map_x;
}
if (filter->map_y) {
filter->map_y->release ();
delete filter->map_y;
}
G_OBJECT_CLASS (gst_dewarp_parent_class)->finalize (obj);
}
@ -276,6 +284,10 @@ gst_dewarp_init (GstDewarp * filter)
filter->out_width = 0;
filter->out_height = 0;
filter->need_map_update = TRUE;
filter->map_x = new cv::Mat;
filter->map_y = new cv::Mat;
gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter),
FALSE);
}
@ -451,8 +463,8 @@ gst_dewarp_update_map (GstDewarp * filter)
cx = filter->x_center * filter->in_width;
cy = filter->y_center * filter->in_height;
cv::Size destSize (out_width, out_height);
filter->map_x.create (destSize, CV_32FC1);
filter->map_y.create (destSize, CV_32FC1);
filter->map_x->create (destSize, CV_32FC1);
filter->map_y->create (destSize, CV_32FC1);
for (y = 0; y < out_height; y++) {
for (x = 0; x < out_width; x++) {
@ -460,8 +472,8 @@ gst_dewarp_update_map (GstDewarp * filter)
float theta = ((float) (x) / (float) (out_width)) * 2.0 * G_PI;
float xs = cx + r * sin (theta) * filter->remap_correction_x;
float ys = cy + r * cos (theta) * filter->remap_correction_y;
filter->map_x.at < float >(y, x) = xs;
filter->map_y.at < float >(y, x) = ys;
filter->map_x->at < float >(y, x) = xs;
filter->map_y->at < float >(y, x) = ys;
}
}
@ -654,7 +666,7 @@ gst_dewarp_transform_frame (GstOpencvVideoFilter * btrans, GstBuffer * buffer,
dewarped_image = cv::cvarrToMat (outimg, false);
if (filter->display_mode == GST_DEWARP_DISPLAY_PANORAMA) {
cv::remap (fisheye_image, dewarped_image, filter->map_x, filter->map_y,
cv::remap (fisheye_image, dewarped_image, *filter->map_x, *filter->map_y,
inter_mode);
} else if (filter->display_mode == GST_DEWARP_DISPLAY_DOUBLE_PANORAMA) {
cv::Mat view1, view2, panorama_image, concatenated;
@ -663,7 +675,7 @@ gst_dewarp_transform_frame (GstOpencvVideoFilter * btrans, GstBuffer * buffer,
panorama_height = filter->out_height / 2;
cv::Size panoramaSize (panorama_width, panorama_height);
panorama_image.create (panoramaSize, fisheye_image.type ());
cv::remap (fisheye_image, panorama_image, filter->map_x, filter->map_y,
cv::remap (fisheye_image, panorama_image, *filter->map_x, *filter->map_y,
inter_mode);
view1 =
panorama_image (cv::Rect (0, 0, filter->out_width, panorama_height));
@ -683,7 +695,7 @@ gst_dewarp_transform_frame (GstOpencvVideoFilter * btrans, GstBuffer * buffer,
view_height = filter->out_height / 2;
cv::Size panoramaSize (panorama_width, panorama_height);
panorama_image.create (panoramaSize, fisheye_image.type ());
cv::remap (fisheye_image, panorama_image, filter->map_x, filter->map_y,
cv::remap (fisheye_image, panorama_image, *filter->map_x, *filter->map_y,
inter_mode);
view1 = panorama_image (cv::Rect (0, 0, view_width, view_height));
view2 =

4
ext/opencv/gstdewarp.h
View file

@ -81,8 +81,8 @@ enum _GstDewarpInterpolationMode {
struct _GstDewarp
{
GstOpencvVideoFilter element;
cv::Mat map_x;
cv::Mat map_y;
cv::Mat *map_x;
cv::Mat *map_y;
gdouble x_center;
gdouble y_center;
gdouble inner_radius;