static gboolean
gst_gdk_pixbuf_overlay_start (GstBaseTransform * trans)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (trans);
GError *err = NULL;
if (overlay->location != NULL) {
if (!gst_gdk_pixbuf_overlay_load_image (overlay, &err))
goto error_loading_image;
gst_base_transform_set_passthrough (trans, FALSE);
} else {
GST_WARNING_OBJECT (overlay, "no image location set, doing nothing");
gst_base_transform_set_passthrough (trans, TRUE);
}
return TRUE;
/* ERRORS */
error_loading_image:
{
GST_ELEMENT_ERROR (overlay, RESOURCE, OPEN_READ,
("Could not load overlay image."), ("%s", err->message));
g_error_free (err);
return FALSE;
}
}
static void
gst_gdk_pixbuf_overlay_before_transform (GstBaseTransform * trans,
GstBuffer * outbuf)
{
GstClockTime stream_time;
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (trans);
gboolean set_passthrough = FALSE;
stream_time = gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME,
GST_BUFFER_TIMESTAMP (outbuf));
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (GST_OBJECT (trans), stream_time);
/* now properties have been sync'ed; maybe need to update composition */
GST_OBJECT_LOCK (overlay);
if (G_UNLIKELY (overlay->update_composition)) {
gst_gdk_pixbuf_overlay_update_composition (overlay);
overlay->update_composition = FALSE;
set_passthrough = TRUE;
}
GST_OBJECT_UNLOCK (overlay);
/* determine passthrough mode so the buffer is writable if needed
* when passed into _transform_ip */
if (G_UNLIKELY (set_passthrough))
gst_base_transform_set_passthrough (trans, overlay->comp == NULL);
}
void
gst_gdk_pixbuf_overlay_finalize (GObject * object)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (object);
g_free (overlay->location);
overlay->location = NULL;
G_OBJECT_CLASS (gst_gdk_pixbuf_overlay_parent_class)->finalize (object);
}
void
gst_gdk_pixbuf_overlay_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (object);
GST_OBJECT_LOCK (overlay);
switch (property_id) {
case PROP_LOCATION:{
GError *err = NULL;
g_free (overlay->location);
overlay->location = g_value_dup_string (value);
if (!gst_gdk_pixbuf_overlay_load_image (overlay, &err)) {
GST_ERROR_OBJECT (overlay, "Could not load overlay image: %s",
err->message);
g_error_free (err);
}
}
break;
case PROP_OFFSET_X:
overlay->offset_x = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_OFFSET_Y:
overlay->offset_y = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_RELATIVE_X:
overlay->relative_x = g_value_get_double (value);
overlay->update_composition = TRUE;
break;
case PROP_RELATIVE_Y:
overlay->relative_y = g_value_get_double (value);
overlay->update_composition = TRUE;
break;
case PROP_OVERLAY_WIDTH:
overlay->overlay_width = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_OVERLAY_HEIGHT:
overlay->overlay_height = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_ALPHA:
overlay->alpha = g_value_get_double (value);
overlay->update_composition = TRUE;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
GST_OBJECT_UNLOCK (overlay);
}
static GstFlowReturn
gst_gdk_pixbuf_overlay_transform_frame_ip (GstVideoFilter * filter,
GstVideoFrame * frame)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (filter);
if (overlay->comp != NULL)
gst_video_overlay_composition_blend (overlay->comp, frame);
return GST_FLOW_OK;
}
void
gst_gdk_pixbuf_overlay_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (object);
GST_OBJECT_LOCK (overlay);
switch (property_id) {
case PROP_LOCATION:
g_value_set_string (value, overlay->location);
break;
case PROP_PIXBUF:
g_value_set_object (value, overlay->pixbuf);
break;
case PROP_OFFSET_X:
g_value_set_int (value, overlay->offset_x);
break;
case PROP_OFFSET_Y:
g_value_set_int (value, overlay->offset_y);
break;
case PROP_RELATIVE_X:
g_value_set_double (value, overlay->relative_x);
break;
case PROP_RELATIVE_Y:
g_value_set_double (value, overlay->relative_y);
break;
case PROP_COEF_X:
g_value_set_double (value, overlay->coef_x);
break;
case PROP_COEF_Y:
g_value_set_double (value, overlay->coef_y);
break;
case PROP_OVERLAY_WIDTH:
g_value_set_int (value, overlay->overlay_width);
break;
case PROP_OVERLAY_HEIGHT:
g_value_set_int (value, overlay->overlay_height);
break;
case PROP_ALPHA:
g_value_set_double (value, overlay->alpha);
break;
case PROP_POSITIONING_MODE:
g_value_set_enum (value, overlay->positioning_mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
GST_OBJECT_UNLOCK (overlay);
}
static gboolean
gst_gdk_pixbuf_overlay_stop (GstBaseTransform * trans)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (trans);
if (overlay->comp) {
gst_video_overlay_composition_unref (overlay->comp);
overlay->comp = NULL;
}
gst_buffer_replace (&overlay->pixels, NULL);
return TRUE;
}
static gboolean
gst_gdk_pixbuf_overlay_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (trans);
GstVideoFormat video_format;
int w, h;
if (!gst_video_format_parse_caps (incaps, &video_format, &w, &h))
return FALSE;
overlay->format = video_format;
overlay->width = w;
overlay->height = h;
return TRUE;
}
static GstFlowReturn
gst_gdk_pixbuf_overlay_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (trans);
GST_OBJECT_LOCK (overlay);
if (G_UNLIKELY (overlay->update_composition)) {
gst_gdk_pixbuf_overlay_update_composition (overlay);
overlay->update_composition = FALSE;
}
GST_OBJECT_UNLOCK (overlay);
if (overlay->comp != NULL)
gst_video_overlay_composition_blend (overlay->comp, buf);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_gdk_pixbuf_overlay_transform_frame_ip (GstVideoFilter * filter,
GstVideoFrame * frame)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (filter);
GST_OBJECT_LOCK (overlay);
if (G_UNLIKELY (overlay->update_composition)) {
gst_gdk_pixbuf_overlay_update_composition (overlay);
overlay->update_composition = FALSE;
}
GST_OBJECT_UNLOCK (overlay);
if (overlay->comp != NULL)
gst_video_overlay_composition_blend (overlay->comp, frame);
return GST_FLOW_OK;
}
