static GstFlowReturn
gst_quarktv_transform_frame (GstVideoFilter * vfilter, GstVideoFrame * in_frame,
GstVideoFrame * out_frame)
{
GstQuarkTV *filter = GST_QUARKTV (vfilter);
gint area;
guint32 *src, *dest;
GstClockTime timestamp;
GstBuffer **planetable;
gint planes, current_plane;
timestamp = GST_BUFFER_TIMESTAMP (in_frame->buffer);
timestamp =
gst_segment_to_stream_time (&GST_BASE_TRANSFORM (vfilter)->segment,
GST_FORMAT_TIME, timestamp);
GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
if (GST_CLOCK_TIME_IS_VALID (timestamp))
gst_object_sync_values (GST_OBJECT (filter), timestamp);
if (G_UNLIKELY (filter->planetable == NULL))
return GST_FLOW_FLUSHING;
src = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
dest = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
GST_OBJECT_LOCK (filter);
area = filter->area;
planetable = filter->planetable;
planes = filter->planes;
current_plane = filter->current_plane;
if (planetable[current_plane])
gst_buffer_unref (planetable[current_plane]);
planetable[current_plane] = gst_buffer_ref (in_frame->buffer);
/* For each pixel */
while (--area) {
GstBuffer *rand;
/* pick a random buffer */
rand = planetable[(current_plane + (fastrand () >> 24)) % planes];
/* Copy the pixel from the random buffer to dest, FIXME, slow */
if (rand)
gst_buffer_extract (rand, area * 4, &dest[area], 4);
else
dest[area] = src[area];
}
filter->current_plane--;
if (filter->current_plane < 0)
filter->current_plane = planes - 1;
GST_OBJECT_UNLOCK (filter);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_quarktv_transform (GstBaseTransform * trans, GstBuffer * in,
GstBuffer * out)
{
GstQuarkTV *filter = GST_QUARKTV (trans);
gint area;
guint32 *src, *dest;
GstFlowReturn ret = GST_FLOW_OK;
GstClockTime timestamp;
GstBuffer **planetable;
gint planes, current_plane;
timestamp = GST_BUFFER_TIMESTAMP (in);
timestamp =
gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);
GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
if (GST_CLOCK_TIME_IS_VALID (timestamp))
gst_object_sync_values (G_OBJECT (filter), timestamp);
if (G_UNLIKELY (filter->planetable == NULL))
return GST_FLOW_WRONG_STATE;
GST_OBJECT_LOCK (filter);
area = filter->area;
src = (guint32 *) GST_BUFFER_DATA (in);
dest = (guint32 *) GST_BUFFER_DATA (out);
planetable = filter->planetable;
planes = filter->planes;
current_plane = filter->current_plane;
if (planetable[current_plane])
gst_buffer_unref (planetable[current_plane]);
planetable[current_plane] = gst_buffer_ref (in);
/* For each pixel */
while (--area) {
GstBuffer *rand;
/* pick a random buffer */
rand = planetable[(current_plane + (fastrand () >> 24)) % planes];
/* Copy the pixel from the random buffer to dest */
dest[area] =
(rand ? ((guint32 *) GST_BUFFER_DATA (rand))[area] : src[area]);
}
filter->current_plane--;
if (filter->current_plane < 0)
filter->current_plane = planes - 1;
GST_OBJECT_UNLOCK (filter);
return ret;
}
static void
gst_quarktv_finalize (GObject * object)
{
GstQuarkTV *filter = GST_QUARKTV (object);
if (filter->planetable) {
gst_quarktv_planetable_clear (filter);
g_free (filter->planetable);
filter->planetable = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_quarktv_start (GstBaseTransform * trans)
{
GstQuarkTV *filter = GST_QUARKTV (trans);
if (filter->planetable) {
gst_quarktv_planetable_clear (filter);
g_free (filter->planetable);
}
filter->planetable =
(GstBuffer **) g_malloc0 (filter->planes * sizeof (GstBuffer *));
return TRUE;
}
static void
gst_quarktv_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstQuarkTV *filter = GST_QUARKTV (object);
switch (prop_id) {
case PROP_PLANES:
g_value_set_int (value, filter->planes);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_quarktv_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
{
GstQuarkTV *filter = GST_QUARKTV (vfilter);
gint width, height;
width = GST_VIDEO_INFO_WIDTH (in_info);
height = GST_VIDEO_INFO_HEIGHT (in_info);
gst_quarktv_planetable_clear (filter);
filter->area = width * height;
return TRUE;
}
static void
gst_quarktv_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstQuarkTV *filter = GST_QUARKTV (object);
GST_OBJECT_LOCK (filter);
switch (prop_id) {
case PROP_PLANES:
{
gint new_n_planes = g_value_get_int (value);
GstBuffer **new_planetable;
gint i;
/* If the number of planes changed, copy across any existing planes */
if (new_n_planes != filter->planes) {
new_planetable =
(GstBuffer **) g_malloc0 (new_n_planes * sizeof (GstBuffer *));
if (filter->planetable) {
for (i = 0; (i < new_n_planes) && (i < filter->planes); i++) {
new_planetable[i] = filter->planetable[i];
}
for (; i < filter->planes; i++) {
if (filter->planetable[i])
gst_buffer_unref (filter->planetable[i]);
}
g_free (filter->planetable);
}
filter->planetable = new_planetable;
filter->planes = new_n_planes;
filter->current_plane = filter->planes - 1;
}
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (filter);
}
static gboolean
gst_quarktv_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
GstCaps * outcaps)
{
GstQuarkTV *filter = GST_QUARKTV (btrans);
GstStructure *structure;
gboolean ret = FALSE;
structure = gst_caps_get_structure (incaps, 0);
GST_OBJECT_LOCK (filter);
if (gst_structure_get_int (structure, "width", &filter->width) &&
gst_structure_get_int (structure, "height", &filter->height)) {
gst_quarktv_planetable_clear (filter);
filter->area = filter->width * filter->height;
ret = TRUE;
}
GST_OBJECT_UNLOCK (filter);
return ret;
}
