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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 17:20:36 +00:00
opencv: fix cvlaplace
cvlaplace was also affected by the silent change in OpenCV API, same as cvsobel. It hasn't been working for a while. It would return a plain black image. This commit updates the usage of cvLaplace by using cvCvtColor to create the grayscale intermediate image to process. This also means there is no need anymore to use GstBaseTransform's transform_caps, since the pads are RGB.
This commit is contained in:
parent
e389211aa5
commit
36e83661ec
2 changed files with 72 additions and 101 deletions
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@ -67,22 +67,14 @@ GST_DEBUG_CATEGORY_STATIC (gst_cv_laplace_debug);
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY8"))
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
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);
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);
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_BE"))
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
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);
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);
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#else
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_LE"))
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);
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#endif
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/* Filter signals and args */
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/* Filter signals and args */
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enum
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enum
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@ -109,8 +101,8 @@ static void gst_cv_laplace_set_property (GObject * object, guint prop_id,
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static void gst_cv_laplace_get_property (GObject * object, guint prop_id,
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static void gst_cv_laplace_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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GValue * value, GParamSpec * pspec);
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static GstCaps *gst_cv_laplace_transform_caps (GstBaseTransform * trans,
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static gboolean gst_cv_laplace_handle_sink_event (GstPad * pad,
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GstPadDirection dir, GstCaps * caps, GstCaps * filter);
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GstObject * parent, GstEvent * event);
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static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * filter,
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static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * filter,
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GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
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GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
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@ -125,8 +117,12 @@ gst_cv_laplace_finalize (GObject * obj)
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{
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (obj);
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GstCvLaplace *filter = GST_CV_LAPLACE (obj);
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if (filter->intermediary_img)
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if (filter->intermediary_img) {
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cvReleaseImage (&filter->intermediary_img);
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cvReleaseImage (&filter->intermediary_img);
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cvReleaseImage (&filter->cvGray);
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cvReleaseImage (&filter->Laplace);
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cvReleaseImage (&filter->CLaplace);
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}
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G_OBJECT_CLASS (gst_cv_laplace_parent_class)->finalize (obj);
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G_OBJECT_CLASS (gst_cv_laplace_parent_class)->finalize (obj);
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}
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}
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@ -136,20 +132,16 @@ static void
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gst_cv_laplace_class_init (GstCvLaplaceClass * klass)
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gst_cv_laplace_class_init (GstCvLaplaceClass * klass)
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{
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{
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GObjectClass *gobject_class;
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GObjectClass *gobject_class;
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GstBaseTransformClass *gstbasetransform_class;
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GstOpencvVideoFilterClass *gstopencvbasefilter_class;
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GstOpencvVideoFilterClass *gstopencvbasefilter_class;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gobject_class = (GObjectClass *) klass;
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gobject_class = (GObjectClass *) klass;
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gstbasetransform_class = (GstBaseTransformClass *) klass;
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gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
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gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_laplace_finalize);
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_laplace_finalize);
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gobject_class->set_property = gst_cv_laplace_set_property;
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gobject_class->set_property = gst_cv_laplace_set_property;
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gobject_class->get_property = gst_cv_laplace_get_property;
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gobject_class->get_property = gst_cv_laplace_get_property;
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gstbasetransform_class->transform_caps = gst_cv_laplace_transform_caps;
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gstopencvbasefilter_class->cv_trans_func = gst_cv_laplace_transform;
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gstopencvbasefilter_class->cv_trans_func = gst_cv_laplace_transform;
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gstopencvbasefilter_class->cv_set_caps = gst_cv_laplace_cv_set_caps;
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gstopencvbasefilter_class->cv_set_caps = gst_cv_laplace_cv_set_caps;
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@ -181,6 +173,9 @@ gst_cv_laplace_class_init (GstCvLaplaceClass * klass)
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static void
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static void
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gst_cv_laplace_init (GstCvLaplace * filter)
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gst_cv_laplace_init (GstCvLaplace * filter)
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{
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{
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gst_pad_set_event_function (GST_BASE_TRANSFORM_SINK_PAD (filter),
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GST_DEBUG_FUNCPTR (gst_cv_laplace_handle_sink_event));
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filter->aperture_size = DEFAULT_APERTURE_SIZE;
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filter->aperture_size = DEFAULT_APERTURE_SIZE;
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filter->scale = DEFAULT_SCALE_FACTOR;
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filter->scale = DEFAULT_SCALE_FACTOR;
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filter->shift = DEFAULT_SHIFT;
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filter->shift = DEFAULT_SHIFT;
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@ -195,97 +190,17 @@ gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width,
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gint out_height, gint out_depth, gint out_channels)
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gint out_height, gint out_depth, gint out_channels)
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{
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (trans);
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GstCvLaplace *filter = GST_CV_LAPLACE (trans);
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gint intermediary_depth;
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/* cvLaplace needs an signed output, so we create our intermediary step
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* image here */
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switch (out_depth) {
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case IPL_DEPTH_16U:
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intermediary_depth = IPL_DEPTH_16S;
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break;
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default:
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GST_WARNING_OBJECT (filter, "Unsupported output depth %d", out_depth);
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return FALSE;
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}
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if (filter->intermediary_img) {
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if (filter->intermediary_img) {
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cvReleaseImage (&filter->intermediary_img);
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cvReleaseImage (&filter->intermediary_img);
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}
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}
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filter->intermediary_img = cvCreateImage (cvSize (out_width, out_height),
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filter->intermediary_img =
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intermediary_depth, out_channels);
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cvCreateImage (cvSize (out_width, out_height), IPL_DEPTH_16S, 1);
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return TRUE;
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return TRUE;
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}
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}
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static GstCaps *
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gst_cv_laplace_transform_caps (GstBaseTransform * trans, GstPadDirection dir,
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GstCaps * caps, GstCaps * filter)
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{
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GstCaps *to, *ret;
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GstCaps *templ;
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GstStructure *structure;
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GstPad *other;
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guint i;
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to = gst_caps_new_empty ();
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for (i = 0; i < gst_caps_get_size (caps); i++) {
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const GValue *v;
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GValue list = { 0, };
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GValue val = { 0, };
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structure = gst_structure_copy (gst_caps_get_structure (caps, i));
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g_value_init (&list, GST_TYPE_LIST);
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g_value_init (&val, G_TYPE_STRING);
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g_value_set_string (&val, "GRAY8");
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gst_value_list_append_value (&list, &val);
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g_value_unset (&val);
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g_value_init (&val, G_TYPE_STRING);
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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g_value_set_string (&val, "GRAY16_BE");
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#else
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g_value_set_string (&val, "GRAY16_LE");
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#endif
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gst_value_list_append_value (&list, &val);
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g_value_unset (&val);
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v = gst_structure_get_value (structure, "format");
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gst_value_list_merge (&val, v, &list);
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gst_structure_set_value (structure, "format", &val);
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g_value_unset (&val);
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g_value_unset (&list);
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gst_structure_remove_field (structure, "colorimetry");
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gst_structure_remove_field (structure, "chroma-site");
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gst_caps_append_structure (to, structure);
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}
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/* filter against set allowed caps on the pad */
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other = (dir == GST_PAD_SINK) ? trans->srcpad : trans->sinkpad;
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templ = gst_pad_get_pad_template_caps (other);
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ret = gst_caps_intersect (to, templ);
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gst_caps_unref (to);
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gst_caps_unref (templ);
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if (ret && filter) {
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GstCaps *intersection;
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intersection =
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gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (ret);
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ret = intersection;
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}
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return ret;
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}
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static void
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static void
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gst_cv_laplace_set_property (GObject * object, guint prop_id,
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gst_cv_laplace_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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const GValue * value, GParamSpec * pspec)
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@ -336,17 +251,70 @@ gst_cv_laplace_get_property (GObject * object, guint prop_id,
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}
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}
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}
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}
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static gboolean
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gst_cv_laplace_handle_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event)
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{
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GstCvLaplace *filter;
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gint width, height;
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GstStructure *structure;
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gboolean res = TRUE;
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filter = GST_CV_LAPLACE (parent);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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gst_event_parse_caps (event, &caps);
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_get_int (structure, "width", &width);
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gst_structure_get_int (structure, "height", &height);
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if (filter->intermediary_img != NULL) {
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cvReleaseImage (&filter->intermediary_img);
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cvReleaseImage (&filter->CLaplace);
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cvReleaseImage (&filter->cvGray);
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cvReleaseImage (&filter->Laplace);
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}
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filter->CLaplace =
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cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 3);
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filter->intermediary_img =
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cvCreateImage (cvSize (width, height), IPL_DEPTH_16S, 1);
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filter->cvGray = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 1);
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filter->Laplace = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 1);
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break;
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}
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default:
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break;
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}
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res = gst_pad_event_default (pad, parent, event);
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return res;
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}
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static GstFlowReturn
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static GstFlowReturn
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gst_cv_laplace_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
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gst_cv_laplace_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
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IplImage * img, GstBuffer * outbuf, IplImage * outimg)
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IplImage * img, GstBuffer * outbuf, IplImage * outimg)
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{
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{
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GstCvLaplace *filter = GST_CV_LAPLACE (base);
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GstCvLaplace *filter = GST_CV_LAPLACE (base);
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GstMapInfo out_info;
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g_assert (filter->intermediary_img);
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g_assert (filter->intermediary_img);
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cvLaplace (img, filter->intermediary_img, filter->aperture_size);
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cvCvtColor (img, filter->cvGray, CV_RGB2GRAY);
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cvConvertScale (filter->intermediary_img, outimg, filter->scale,
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cvLaplace (filter->cvGray, filter->intermediary_img, filter->aperture_size);
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cvConvertScale (filter->intermediary_img, filter->Laplace, filter->scale,
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filter->shift);
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filter->shift);
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cvZero (filter->CLaplace);
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cvCvtColor (filter->Laplace, filter->CLaplace, CV_GRAY2RGB);
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gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE);
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memcpy (out_info.data, filter->CLaplace->imageData,
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gst_buffer_get_size (outbuf));
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return GST_FLOW_OK;
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return GST_FLOW_OK;
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}
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}
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@ -72,6 +72,9 @@ struct _GstCvLaplace
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gdouble shift;
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gdouble shift;
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IplImage *intermediary_img;
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IplImage *intermediary_img;
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IplImage *cvGray;
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IplImage *Laplace;
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IplImage *CLaplace;
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};
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};
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struct _GstCvLaplaceClass
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struct _GstCvLaplaceClass
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