static void
gst_gdk_pixbuf_overlay_update_composition (GstGdkPixbufOverlay * overlay)
{
GstVideoOverlayComposition *comp;
GstVideoOverlayRectangle *rect;
GstVideoMeta *overlay_meta;
gint x, y, width, height;
gint video_width =
GST_VIDEO_INFO_WIDTH (&GST_VIDEO_FILTER (overlay)->in_info);
gint video_height =
GST_VIDEO_INFO_HEIGHT (&GST_VIDEO_FILTER (overlay)->in_info);
if (overlay->comp) {
gst_video_overlay_composition_unref (overlay->comp);
overlay->comp = NULL;
}
if (overlay->alpha == 0.0 || overlay->pixels == NULL)
return;
overlay_meta = gst_buffer_get_video_meta (overlay->pixels);
x = overlay->offset_x < 0 ?
video_width + overlay->offset_x - overlay_meta->width +
(overlay->relative_x * overlay_meta->width) :
overlay->offset_x + (overlay->relative_x * overlay_meta->width);
y = overlay->offset_y < 0 ?
video_height + overlay->offset_y - overlay_meta->height +
(overlay->relative_y * overlay_meta->height) :
overlay->offset_y + (overlay->relative_y * overlay_meta->height);
width = overlay->overlay_width;
if (width == 0)
width = overlay_meta->width;
height = overlay->overlay_height;
if (height == 0)
height = overlay_meta->height;
GST_DEBUG_OBJECT (overlay, "overlay image dimensions: %d x %d, alpha=%.2f",
overlay_meta->width, overlay_meta->height, overlay->alpha);
GST_DEBUG_OBJECT (overlay, "properties: x,y: %d,%d (%g%%,%g%%) - WxH: %dx%d",
overlay->offset_x, overlay->offset_y,
overlay->relative_x * 100.0, overlay->relative_y * 100.0,
overlay->overlay_height, overlay->overlay_width);
GST_DEBUG_OBJECT (overlay, "overlay rendered: %d x %d @ %d,%d (onto %d x %d)",
width, height, x, y, video_width, video_height);
rect = gst_video_overlay_rectangle_new_raw (overlay->pixels,
x, y, width, height, GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
if (overlay->alpha != 1.0)
gst_video_overlay_rectangle_set_global_alpha (rect, overlay->alpha);
comp = gst_video_overlay_composition_new (rect);
gst_video_overlay_rectangle_unref (rect);
overlay->comp = comp;
}
static void
gst_video_flip_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoFlip *videoflip;
GstVideoFilter *videofilter;
g_return_if_fail (GST_IS_VIDEO_FLIP (object));
videoflip = GST_VIDEO_FLIP (object);
videofilter = GST_VIDEO_FILTER (object);
switch (prop_id) {
case ARG_METHOD:
{
GstVideoFlipMethod method;
method = g_value_get_enum (value);
if (method != videoflip->method) {
GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
g_mutex_lock (btrans->transform_lock);
gst_pad_set_caps (btrans->sinkpad, NULL);
gst_pad_set_caps (btrans->srcpad, NULL);
g_mutex_unlock (btrans->transform_lock);
videoflip->method = method;
}
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_video_filter_init (GstVideoFilter * instance)
{
GstVideoFilter *videofilter = GST_VIDEO_FILTER (instance);
GST_DEBUG_OBJECT (videofilter, "gst_video_filter_init");
videofilter->negotiated = FALSE;
/* enable QoS */
gst_base_transform_set_qos_enabled (GST_BASE_TRANSFORM (videofilter), TRUE);
}
