mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
267 lines
7.3 KiB
C
267 lines
7.3 KiB
C
/* GStreamer
|
|
* Copyright (C) <2009> Sebastian Dröge <sebastian.droege@collabora.co.uk>
|
|
*
|
|
* EffecTV - Realtime Digital Video Effector
|
|
* Copyright (C) 2001-2006 FUKUCHI Kentaro
|
|
*
|
|
* StreakTV - afterimage effector.
|
|
* Copyright (C) 2001-2002 FUKUCHI Kentaro
|
|
*
|
|
* This combines the StreakTV and BaltanTV effects, which are
|
|
* very similar. BaltanTV is used if the feedback property is set
|
|
* to TRUE, otherwise StreakTV is used.
|
|
*
|
|
* EffecTV is free software. This library is free software;
|
|
* you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:element-streaktv
|
|
* @title: streaktv
|
|
*
|
|
* StreakTV makes after images of moving objects.
|
|
*
|
|
* ## Example launch line
|
|
* |[
|
|
* gst-launch-1.0 -v videotestsrc ! streaktv ! videoconvert ! autovideosink
|
|
* ]| This pipeline shows the effect of streaktv on a test stream.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <math.h>
|
|
#include <string.h>
|
|
|
|
#include "gststreak.h"
|
|
#include "gsteffectv.h"
|
|
|
|
#define DEFAULT_FEEDBACK FALSE
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_FEEDBACK
|
|
};
|
|
|
|
#define gst_streaktv_parent_class parent_class
|
|
G_DEFINE_TYPE (GstStreakTV, gst_streaktv, GST_TYPE_VIDEO_FILTER);
|
|
GST_ELEMENT_REGISTER_DEFINE (streaktv, "streaktv", GST_RANK_NONE,
|
|
GST_TYPE_STREAKTV);
|
|
|
|
static GstStaticPadTemplate gst_streaktv_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ BGRx, RGBx, xBGR, xRGB }"))
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_streaktv_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ BGRx, RGBx, xBGR, xRGB }"))
|
|
);
|
|
|
|
|
|
static GstFlowReturn
|
|
gst_streaktv_transform_frame (GstVideoFilter * vfilter,
|
|
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
|
|
{
|
|
GstStreakTV *filter = GST_STREAKTV (vfilter);
|
|
guint32 *src, *dest;
|
|
gint i, cf;
|
|
gint video_area, width, height;
|
|
guint32 **planetable = filter->planetable;
|
|
gint plane = filter->plane;
|
|
guint stride_mask, stride_shift, stride;
|
|
|
|
src = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
|
|
dest = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
|
|
|
|
width = GST_VIDEO_FRAME_WIDTH (in_frame);
|
|
height = GST_VIDEO_FRAME_HEIGHT (in_frame);
|
|
|
|
video_area = width * height;
|
|
|
|
GST_OBJECT_LOCK (filter);
|
|
if (filter->feedback) {
|
|
stride_mask = 0xfcfcfcfc;
|
|
stride = 8;
|
|
stride_shift = 2;
|
|
} else {
|
|
stride_mask = 0xf8f8f8f8;
|
|
stride = 4;
|
|
stride_shift = 3;
|
|
}
|
|
|
|
for (i = 0; i < video_area; i++) {
|
|
planetable[plane][i] = (src[i] & stride_mask) >> stride_shift;
|
|
}
|
|
|
|
cf = plane & (stride - 1);
|
|
if (filter->feedback) {
|
|
for (i = 0; i < video_area; i++) {
|
|
dest[i] = planetable[cf][i]
|
|
+ planetable[cf + stride][i]
|
|
+ planetable[cf + stride * 2][i]
|
|
+ planetable[cf + stride * 3][i];
|
|
planetable[plane][i] = (dest[i] & stride_mask) >> stride_shift;
|
|
}
|
|
} else {
|
|
for (i = 0; i < video_area; i++) {
|
|
dest[i] = planetable[cf][i]
|
|
+ planetable[cf + stride][i]
|
|
+ planetable[cf + stride * 2][i]
|
|
+ planetable[cf + stride * 3][i]
|
|
+ planetable[cf + stride * 4][i]
|
|
+ planetable[cf + stride * 5][i]
|
|
+ planetable[cf + stride * 6][i]
|
|
+ planetable[cf + stride * 7][i];
|
|
}
|
|
}
|
|
|
|
plane++;
|
|
filter->plane = plane & (PLANES - 1);
|
|
GST_OBJECT_UNLOCK (filter);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static gboolean
|
|
gst_streaktv_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
|
|
GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
|
|
{
|
|
GstStreakTV *filter = GST_STREAKTV (vfilter);
|
|
gint i, width, height;
|
|
|
|
width = GST_VIDEO_INFO_WIDTH (in_info);
|
|
height = GST_VIDEO_INFO_HEIGHT (in_info);
|
|
|
|
g_free (filter->planebuffer);
|
|
|
|
filter->planebuffer = g_new0 (guint32, width * height * 4 * PLANES);
|
|
|
|
for (i = 0; i < PLANES; i++)
|
|
filter->planetable[i] = &filter->planebuffer[width * height * i];
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_streaktv_start (GstBaseTransform * trans)
|
|
{
|
|
GstStreakTV *filter = GST_STREAKTV (trans);
|
|
|
|
filter->plane = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_streaktv_finalize (GObject * object)
|
|
{
|
|
GstStreakTV *filter = GST_STREAKTV (object);
|
|
|
|
if (filter->planebuffer) {
|
|
g_free (filter->planebuffer);
|
|
filter->planebuffer = NULL;
|
|
}
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_streaktv_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstStreakTV *filter = GST_STREAKTV (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_FEEDBACK:
|
|
if (G_UNLIKELY (GST_STATE (filter) >= GST_STATE_PAUSED)) {
|
|
g_warning ("Changing the \"feedback\" property only allowed "
|
|
"in state < PLAYING");
|
|
return;
|
|
}
|
|
|
|
filter->feedback = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_streaktv_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstStreakTV *filter = GST_STREAKTV (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_FEEDBACK:
|
|
g_value_set_boolean (value, filter->feedback);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_streaktv_class_init (GstStreakTVClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
GstElementClass *gstelement_class = (GstElementClass *) klass;
|
|
GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
|
|
GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
|
|
|
|
gobject_class->set_property = gst_streaktv_set_property;
|
|
gobject_class->get_property = gst_streaktv_get_property;
|
|
|
|
gobject_class->finalize = gst_streaktv_finalize;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_FEEDBACK,
|
|
g_param_spec_boolean ("feedback", "Feedback",
|
|
"Feedback", DEFAULT_FEEDBACK,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class, "StreakTV effect",
|
|
"Filter/Effect/Video",
|
|
"StreakTV makes after images of moving objects",
|
|
"FUKUCHI, Kentarou <fukuchi@users.sourceforge.net>, "
|
|
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_streaktv_sink_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_streaktv_src_template);
|
|
|
|
trans_class->start = GST_DEBUG_FUNCPTR (gst_streaktv_start);
|
|
|
|
vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_streaktv_set_info);
|
|
vfilter_class->transform_frame =
|
|
GST_DEBUG_FUNCPTR (gst_streaktv_transform_frame);
|
|
}
|
|
|
|
static void
|
|
gst_streaktv_init (GstStreakTV * filter)
|
|
{
|
|
filter->feedback = DEFAULT_FEEDBACK;
|
|
}
|