static void
get_property (GObject * instance, guint prop_id, GValue * value, GParamSpec * pspec)
{
RsvgHandle *self = RSVG_HANDLE (instance);
RsvgDimensionData dim;
switch (prop_id) {
case PROP_DPI_X:
g_value_set_double (value, self->priv->dpi_x);
break;
case PROP_DPI_Y:
g_value_set_double (value, self->priv->dpi_y);
break;
case PROP_BASE_URI:
g_value_set_string (value, rsvg_handle_get_base_uri (self));
break;
case PROP_WIDTH:
rsvg_handle_get_dimensions (self, &dim);
g_value_set_int (value, dim.width);
break;
case PROP_HEIGHT:
rsvg_handle_get_dimensions (self, &dim);
g_value_set_int (value, dim.height);
break;
case PROP_EM:
rsvg_handle_get_dimensions (self, &dim);
g_value_set_double (value, dim.em);
break;
case PROP_EX:
rsvg_handle_get_dimensions (self, &dim);
g_value_set_double (value, dim.ex);
break;
case PROP_TITLE:
g_value_set_string (value, rsvg_handle_get_title (self));
break;
case PROP_DESC:
g_value_set_string (value, rsvg_handle_get_desc (self));
break;
case PROP_METADATA:
g_value_set_string (value, rsvg_handle_get_metadata (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (instance, prop_id, pspec);
}
}
static GstFlowReturn
gst_rsvg_decode_image (GstRsvgDec * rsvg, const guint8 * data, guint size,
GstBuffer ** buffer)
{
GstFlowReturn ret = GST_FLOW_OK;
cairo_t *cr;
cairo_surface_t *surface;
RsvgHandle *handle;
GError *error = NULL;
RsvgDimensionData dimension;
gdouble scalex, scaley;
const gchar *title = NULL, *comment = NULL;
GST_LOG_OBJECT (rsvg, "parsing svg");
handle = rsvg_handle_new_from_data (data, size, &error);
if (!handle) {
GST_ERROR_OBJECT (rsvg, "Failed to parse SVG image: %s", error->message);
g_error_free (error);
return GST_FLOW_ERROR;
}
title = rsvg_handle_get_title (handle);
comment = rsvg_handle_get_desc (handle);
if (title || comment) {
GST_LOG_OBJECT (rsvg, "adding tags");
if (!rsvg->pending_tags)
rsvg->pending_tags = gst_tag_list_new ();
if (title && *title)
gst_tag_list_add (rsvg->pending_tags, GST_TAG_MERGE_REPLACE_ALL,
GST_TAG_TITLE, title, NULL);
if (comment && *comment)
gst_tag_list_add (rsvg->pending_tags, GST_TAG_MERGE_REPLACE_ALL,
GST_TAG_COMMENT, comment, NULL);
}
rsvg_handle_get_dimensions (handle, &dimension);
if (rsvg->width != dimension.width || rsvg->height != dimension.height) {
GstCaps *caps1, *caps2, *caps3;
GstStructure *s;
GST_LOG_OBJECT (rsvg, "resolution changed, updating caps");
caps1 = gst_caps_copy (gst_pad_get_pad_template_caps (rsvg->srcpad));
caps2 = gst_pad_peer_get_caps (rsvg->srcpad);
if (caps2) {
caps3 = gst_caps_intersect (caps1, caps2);
gst_caps_unref (caps1);
gst_caps_unref (caps2);
caps1 = caps3;
caps3 = NULL;
}
if (gst_caps_is_empty (caps1)) {
GST_ERROR_OBJECT (rsvg, "Unable to negotiate a format");
gst_caps_unref (caps1);
g_object_unref (handle);
return GST_FLOW_NOT_NEGOTIATED;
}
caps2 = gst_caps_copy (gst_pad_get_pad_template_caps (rsvg->srcpad));
s = gst_caps_get_structure (caps2, 0);
gst_structure_set (s, "width", G_TYPE_INT, dimension.width, "height",
G_TYPE_INT, dimension.height, "framerate", GST_TYPE_FRACTION, 0, 1,
NULL);
caps3 = gst_caps_intersect (caps1, caps2);
if (!gst_caps_is_empty (caps3)) {
gst_caps_truncate (caps3);
gst_pad_set_caps (rsvg->srcpad, caps3);
gst_caps_unref (caps1);
gst_caps_unref (caps2);
gst_caps_unref (caps3);
rsvg->width = dimension.width;
rsvg->height = dimension.height;
} else {
gst_caps_unref (caps2);
gst_caps_unref (caps3);
gst_caps_truncate (caps1);
s = gst_caps_get_structure (caps1, 0);
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
if (!gst_caps_is_fixed (caps1)
&& (!gst_structure_fixate_field_nearest_int (s, "width",
dimension.width)
|| !gst_structure_fixate_field_nearest_int (s, "height",
dimension.height))) {
g_object_unref (handle);
GST_ERROR_OBJECT (rsvg, "Failed to fixate caps");
return GST_FLOW_NOT_NEGOTIATED;
}
gst_pad_set_caps (rsvg->srcpad, caps1);
gst_structure_get_int (s, "width", &rsvg->width);
gst_structure_get_int (s, "height", &rsvg->height);
gst_caps_unref (caps1);
}
}
if ((ret = gst_pad_alloc_buffer_and_set_caps (rsvg->srcpad,
GST_BUFFER_OFFSET_NONE,
rsvg->width * rsvg->height * 4,
GST_PAD_CAPS (rsvg->srcpad), buffer)) != GST_FLOW_OK) {
g_object_unref (handle);
GST_ERROR_OBJECT (rsvg, "Buffer allocation failed %s",
gst_flow_get_name (ret));
return ret;
}
GST_LOG_OBJECT (rsvg, "render image at %d x %d", rsvg->height, rsvg->width);
surface =
cairo_image_surface_create_for_data (GST_BUFFER_DATA (*buffer),
CAIRO_FORMAT_ARGB32, rsvg->width, rsvg->height, rsvg->width * 4);
cr = cairo_create (surface);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
scalex = scaley = 1.0;
if (rsvg->width != dimension.width) {
scalex = ((gdouble) rsvg->width) / ((gdouble) dimension.width);
}
if (rsvg->height != dimension.height) {
scaley = ((gdouble) rsvg->height) / ((gdouble) dimension.height);
}
cairo_scale (cr, scalex, scaley);
rsvg_handle_render_cairo (handle, cr);
g_object_unref (handle);
cairo_destroy (cr);
cairo_surface_destroy (surface);
/* Now unpremultiply Cairo's ARGB to match GStreamer's */
gst_rsvg_decode_unpremultiply (GST_BUFFER_DATA (*buffer), rsvg->width,
rsvg->height);
return ret;
}
static VALUE
rb_rsvg_handle_get_desc(VALUE self)
{
return CSTR2RVAL(rsvg_handle_get_desc(_SELF(self)));
}
