diff options
Diffstat (limited to 'gst/geometrictransform/gstsquare.c')
| -rw-r--r-- | gst/geometrictransform/gstsquare.c | 91 |
1 files changed, 89 insertions, 2 deletions
diff --git a/gst/geometrictransform/gstsquare.c b/gst/geometrictransform/gstsquare.c index c15b14d60..5b5db5579 100644 --- a/gst/geometrictransform/gstsquare.c +++ b/gst/geometrictransform/gstsquare.c @@ -53,12 +53,79 @@ GST_DEBUG_CATEGORY_STATIC (gst_square_debug); #define GST_CAT_DEFAULT gst_square_debug +enum +{ + PROP_0, + PROP_WIDTH, + PROP_HEIGHT, +}; + +#define DEFAULT_WIDTH 0.5 +#define DEFAULT_HEIGHT 0.5 + GST_BOILERPLATE (GstSquare, gst_square, GstGeometricTransform, GST_TYPE_GEOMETRIC_TRANSFORM); /* GObject vmethod implementations */ static void +gst_square_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstSquare *square; + GstGeometricTransform *gt; + gdouble v; + + gt = GST_GEOMETRIC_TRANSFORM_CAST (object); + square = GST_SQUARE_CAST (gt); + + GST_OBJECT_LOCK (square); + switch (prop_id) { + case PROP_WIDTH: + v = g_value_get_double (value); + if (v != square->width) { + square->width = v; + gst_geometric_transform_set_need_remap (gt); + } + break; + case PROP_HEIGHT: + v = g_value_get_double (value); + if (v != square->height) { + square->height = v; + gst_geometric_transform_set_need_remap (gt); + } + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } + GST_OBJECT_UNLOCK (square); +} + +static void +gst_square_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstSquare *square; + GstGeometricTransform *gt; + + gt = GST_GEOMETRIC_TRANSFORM_CAST (object); + square = GST_SQUARE_CAST (gt); + + switch (prop_id) { + case PROP_WIDTH: + g_value_set_double (value, square->width); + break; + case PROP_HEIGHT: + g_value_set_double (value, square->height); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void gst_square_base_init (gpointer gclass) { GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); @@ -78,6 +145,7 @@ square_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x, gdouble norm_x; gdouble norm_y; + /* frame size */ gdouble width = gt->width; gdouble height = gt->height; @@ -87,8 +155,12 @@ square_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x, /* transform */ /* zoom at the center, smoothstep around half quadrant and get back to normal */ - norm_x *= 0.5 * (1.0 + smoothstep (0.375, 0.625, ABS (norm_x))); - norm_y *= 0.5 * (1.0 + smoothstep (0.375, 0.625, ABS (norm_y))); + norm_x *= + 0.5 * (1.0 + smoothstep (square->width - 0.125, square->width + 0.125, + ABS (norm_x))); + norm_y *= + 0.5 * (1.0 + smoothstep (square->height - 0.125, square->height + 0.125, + ABS (norm_y))); /* unnormalize */ *in_x = 0.5 * (norm_x + 1.0) * width; @@ -110,6 +182,19 @@ gst_square_class_init (GstSquareClass * klass) gstgt_class = (GstGeometricTransformClass *) klass; parent_class = g_type_class_peek_parent (klass); + gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_square_set_property); + gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_square_get_property); + + g_object_class_install_property (gobject_class, PROP_WIDTH, + g_param_spec_double ("width", "Width", + "Width of the square, relative to the frame width", + 0.0, 1.0, DEFAULT_WIDTH, + GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + g_object_class_install_property (gobject_class, PROP_HEIGHT, + g_param_spec_double ("height", "Height", + "Height of the square, relative to the frame height", + 0.0, 1.0, DEFAULT_HEIGHT, + GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gstgt_class->map_func = square_map; } @@ -119,6 +204,8 @@ gst_square_init (GstSquare * filter, GstSquareClass * gclass) { GstGeometricTransform *gt = GST_GEOMETRIC_TRANSFORM (filter); + filter->width = DEFAULT_WIDTH; + filter->height = DEFAULT_HEIGHT; gt->off_edge_pixels = GST_GT_OFF_EDGES_PIXELS_CLAMP; } |