geometrictransform: adds some properties to base class
Adds a property to select what to do with pixels that are mapped out of edges: ignore, clamp or wrap.
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@ -167,8 +167,6 @@ circle_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
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*in_y =
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*in_y =
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gt->height * (1 - (distance - cgt->radius) / (circle->height + 0.0001));
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gt->height * (1 - (distance - cgt->radius) / (circle->height + 0.0001));
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*in_x = CLAMP (*in_x, 0, gt->width - 1);
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*in_y = CLAMP (*in_y, 0, gt->height - 1);
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GST_DEBUG_OBJECT (circle, "Inversely mapped %d %d into %lf %lf",
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GST_DEBUG_OBJECT (circle, "Inversely mapped %d %d into %lf %lf",
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x, y, *in_x, *in_y);
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x, y, *in_x, *in_y);
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@ -22,6 +22,7 @@
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#endif
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#endif
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#include "gstgeometrictransform.h"
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#include "gstgeometrictransform.h"
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#include "geometricmath.h"
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#include <string.h>
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#include <string.h>
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GST_DEBUG_CATEGORY_STATIC (geometric_transform_debug);
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GST_DEBUG_CATEGORY_STATIC (geometric_transform_debug);
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@ -43,6 +44,43 @@ static GstStaticPadTemplate gst_geometric_transform_sink_template =
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static GstVideoFilterClass *parent_class = NULL;
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static GstVideoFilterClass *parent_class = NULL;
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enum
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{
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PROP_0,
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PROP_OFF_EDGE_PIXELS
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};
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enum
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{
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GST_GT_OFF_EDGES_PIXELS_IGNORE = 0,
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GST_GT_OFF_EDGES_PIXELS_CLAMP,
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GST_GT_OFF_EDGES_PIXELS_WRAP
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};
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#define GST_GT_OFF_EDGES_PIXELS_METHOD_TYPE ( \
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gst_geometric_transform_off_edges_pixels_method_get_type())
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static GType
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gst_geometric_transform_off_edges_pixels_method_get_type (void)
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{
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static GType method_type = 0;
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static const GEnumValue method_types[] = {
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{GST_GT_OFF_EDGES_PIXELS_IGNORE, "Ignore", "ignore"},
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{GST_GT_OFF_EDGES_PIXELS_CLAMP, "Clamp", "clamp"},
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{GST_GT_OFF_EDGES_PIXELS_WRAP, "Wrap", "wrap"},
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{0, NULL, NULL}
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};
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if (!method_type) {
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method_type =
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g_enum_register_static ("GstGeometricTransformOffEdgesPixelsMethod",
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method_types);
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}
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return method_type;
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}
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#define DEFAULT_OFF_EDGE_PIXELS GST_GT_OFF_EDGES_PIXELS_IGNORE
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static gboolean
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static gboolean
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gst_geometric_transform_generate_map (GstGeometricTransform * gt)
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gst_geometric_transform_generate_map (GstGeometricTransform * gt)
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{
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{
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@ -124,16 +162,43 @@ static void
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gst_geometric_transform_do_map (GstGeometricTransform * gt, GstBuffer * inbuf,
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gst_geometric_transform_do_map (GstGeometricTransform * gt, GstBuffer * inbuf,
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GstBuffer * outbuf, gint x, gint y, gdouble in_x, gdouble in_y)
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GstBuffer * outbuf, gint x, gint y, gdouble in_x, gdouble in_y)
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{
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{
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gint trunc_x = (gint) in_x;
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gint trunc_y = (gint) in_y;
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gint in_offset;
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gint in_offset;
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gint out_offset;
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gint out_offset;
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out_offset = y * gt->row_stride + x * gt->pixel_stride;
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out_offset = y * gt->row_stride + x * gt->pixel_stride;
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in_offset = trunc_y * gt->row_stride + trunc_x * gt->pixel_stride;
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memcpy (GST_BUFFER_DATA (outbuf) + out_offset,
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/* operate on out of edge pixels */
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GST_BUFFER_DATA (inbuf) + in_offset, gt->pixel_stride);
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switch (gt->off_edge_pixels) {
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case GST_GT_OFF_EDGES_PIXELS_CLAMP:
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in_x = CLAMP (in_x, 0, gt->width - 1);
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in_y = CLAMP (in_y, 0, gt->height - 1);
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break;
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case GST_GT_OFF_EDGES_PIXELS_WRAP:
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in_x = mod_float (in_x, gt->width);
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in_y = mod_float (in_y, gt->height);
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if (in_x < 0)
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in_x += gt->width;
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if (in_y < 0)
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in_y += gt->height;
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break;
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default:
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break;
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}
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{
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gint trunc_x = (gint) in_x;
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gint trunc_y = (gint) in_y;
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/* only set the values if the values are valid */
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if (trunc_x >= 0 && trunc_x < gt->width && trunc_y >= 0 &&
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trunc_y < gt->height) {
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in_offset = trunc_y * gt->row_stride + trunc_x * gt->pixel_stride;
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memcpy (GST_BUFFER_DATA (outbuf) + out_offset,
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GST_BUFFER_DATA (inbuf) + in_offset, gt->pixel_stride);
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}
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}
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}
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}
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static GstFlowReturn
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static GstFlowReturn
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@ -160,6 +225,43 @@ gst_geometric_transform_transform (GstBaseTransform * trans, GstBuffer * buf,
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return ret;
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return ret;
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}
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}
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static void
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gst_geometric_transform_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstGeometricTransform *gt;
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gt = GST_GEOMETRIC_TRANSFORM (object);
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switch (prop_id) {
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case PROP_OFF_EDGE_PIXELS:
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gt->off_edge_pixels = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_geometric_transform_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstGeometricTransform *gt;
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gt = GST_GEOMETRIC_TRANSFORM (object);
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switch (prop_id) {
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case PROP_OFF_EDGE_PIXELS:
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g_value_set_enum (value, gt->off_edge_pixels);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gboolean
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static gboolean
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gst_geometric_transform_stop (GstBaseTransform * trans)
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gst_geometric_transform_stop (GstBaseTransform * trans)
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{
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{
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@ -184,16 +286,29 @@ gst_geometric_transform_base_init (gpointer g_class)
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static void
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static void
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gst_geometric_transform_class_init (gpointer klass, gpointer class_data)
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gst_geometric_transform_class_init (gpointer klass, gpointer class_data)
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{
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{
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GObjectClass *obj_class;
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GstBaseTransformClass *trans_class;
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GstBaseTransformClass *trans_class;
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obj_class = (GObjectClass *) klass;
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trans_class = (GstBaseTransformClass *) klass;
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trans_class = (GstBaseTransformClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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parent_class = g_type_class_peek_parent (klass);
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obj_class->set_property =
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GST_DEBUG_FUNCPTR (gst_geometric_transform_set_property);
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obj_class->get_property =
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GST_DEBUG_FUNCPTR (gst_geometric_transform_get_property);
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trans_class->stop = GST_DEBUG_FUNCPTR (gst_geometric_transform_stop);
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trans_class->stop = GST_DEBUG_FUNCPTR (gst_geometric_transform_stop);
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trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_geometric_transform_set_caps);
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trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_geometric_transform_set_caps);
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trans_class->transform =
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trans_class->transform =
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GST_DEBUG_FUNCPTR (gst_geometric_transform_transform);
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GST_DEBUG_FUNCPTR (gst_geometric_transform_transform);
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g_object_class_install_property (obj_class, PROP_OFF_EDGE_PIXELS,
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g_param_spec_enum ("off-edge-pixels", "Off edge pixels",
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"What to do with off edge pixels",
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GST_GT_OFF_EDGES_PIXELS_METHOD_TYPE, DEFAULT_OFF_EDGE_PIXELS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT));
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}
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}
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static void
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static void
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@ -80,6 +80,9 @@ struct _GstGeometricTransform {
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gint pixel_stride;
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gint pixel_stride;
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gint row_stride;
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gint row_stride;
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/* properties */
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gint off_edge_pixels;
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gdouble *map;
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gdouble *map;
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};
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};
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@ -172,8 +172,6 @@ kaleidoscope_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
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*in_x = cgt->precalc_x_center + distance * cos (theta);
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*in_x = cgt->precalc_x_center + distance * cos (theta);
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*in_y = cgt->precalc_y_center + distance * sin (theta);
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*in_y = cgt->precalc_y_center + distance * sin (theta);
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*in_x = CLAMP (*in_x, 0, gt->width - 1);
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*in_y = CLAMP (*in_y, 0, gt->height - 1);
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GST_DEBUG_OBJECT (kaleidoscope, "Inversely mapped %d %d into %lf %lf",
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GST_DEBUG_OBJECT (kaleidoscope, "Inversely mapped %d %d into %lf %lf",
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x, y, *in_x, *in_y);
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x, y, *in_x, *in_y);
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@ -161,9 +161,6 @@ pinch_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
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*in_x = cgt->precalc_x_center + dx;
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*in_x = cgt->precalc_x_center + dx;
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*in_y = cgt->precalc_y_center + dy;
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*in_y = cgt->precalc_y_center + dy;
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*in_x = CLAMP (*in_x, 0, gt->width - 1);
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*in_y = CLAMP (*in_y, 0, gt->height - 1);
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}
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}
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GST_DEBUG_OBJECT (pinch, "Inversely mapped %d %d into %lf %lf",
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GST_DEBUG_OBJECT (pinch, "Inversely mapped %d %d into %lf %lf",
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@ -150,9 +150,6 @@ twirl_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
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*in_x = cgt->precalc_x_center + d * cos (a);
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*in_x = cgt->precalc_x_center + d * cos (a);
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*in_y = cgt->precalc_y_center + d * sin (a);
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*in_y = cgt->precalc_y_center + d * sin (a);
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*in_x = CLAMP (*in_x, 0, gt->width - 1);
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*in_y = CLAMP (*in_y, 0, gt->height - 1);
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}
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}
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GST_DEBUG_OBJECT (twirl, "Inversely mapped %d %d into %lf %lf",
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GST_DEBUG_OBJECT (twirl, "Inversely mapped %d %d into %lf %lf",
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