Commit 36321899 authored by Wim Taymans's avatar Wim Taymans

And the revTV plugin..

Original commit message from CVS:
And the revTV plugin..
parent 0f4d96ce
......@@ -2,7 +2,7 @@ plugindir = $(libdir)/gst
plugin_LTLIBRARIES = libgsteffectv.la
libgsteffectv_la_SOURCES = gsteffectv.c gstedge.c gstaging.c gstdice.c gstwarp.c gstshagadelic.c gstvertigo.c
libgsteffectv_la_SOURCES = gsteffectv.c gstedge.c gstaging.c gstdice.c gstwarp.c gstshagadelic.c gstvertigo.c gstrev.c
libgsteffectv_la_CFLAGS = $(GST_CFLAGS)
libgsteffectv_la_LIBADD =
libgsteffectv_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
......
......@@ -32,6 +32,7 @@ static struct _elements_entry _elements[] = {
{ "warpTV", gst_warptv_get_type, &gst_warptv_details, NULL },
{ "shagadelicTV", gst_shagadelictv_get_type, &gst_shagadelictv_details, NULL },
{ "vertigoTV", gst_vertigotv_get_type, &gst_vertigotv_details, NULL },
{ "revTV", gst_revtv_get_type, &gst_revtv_details, NULL },
{ NULL, 0 },
};
......
......@@ -33,5 +33,8 @@ extern GstElementDetails gst_shagadelictv_details;
GType gst_vertigotv_get_type (void);
extern GstElementDetails gst_vertigotv_details;
GType gst_revtv_get_type (void);
extern GstElementDetails gst_revtv_details;
extern GstPadTemplate *gst_effectv_sink_factory ();
extern GstPadTemplate *gst_effectv_src_factory ();
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* EffecTV:
* Copyright (C) 2001 FUKUCHI Kentarou
*
* EffecTV is free software. We release this product under the terms of the
* GNU General Public License version 2. The license is included in the file
* COPYING.
*
* This program 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 General Public License for more details.
*/
/*
* EffecTV - Realtime Digital Video Effector
* Copyright (C) 2001 FUKUCHI Kentarou
*
* revTV based on Rutt-Etra Video Synthesizer 1974?
* (c)2002 Ed Tannenbaum
*
* This effect acts like a waveform monitor on each line.
* It was originally done by deflecting the electron beam on a monitor using
* additional electromagnets on the yoke of a b/w CRT. Here it is emulated digitally.
* Experimaental tapes were made with this system by Bill and Louise Etra and Woody and Steina Vasulka
* The line spacing can be controlled using the 1 and 2 Keys.
* The gain is controlled using the 3 and 4 keys.
* The update rate is controlled using the 0 and - keys.
*/
#include <math.h>
#include <string.h>
#include <gst/gst.h>
#include "gsteffectv.h"
#define GST_TYPE_REVTV \
(gst_revtv_get_type())
#define GST_REVTV(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_REVTV,GstRevTV))
#define GST_REVTV_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstRevTV))
#define GST_IS_REVTV(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_REVTV))
#define GST_IS_REVTV_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_REVTV))
#define THE_COLOR 0xffffffff
typedef struct _GstRevTV GstRevTV;
typedef struct _GstRevTVClass GstRevTVClass;
struct _GstRevTV
{
GstElement element;
GstPad *sinkpad, *srcpad;
gint width, height;
gint vgrabtime;
gint vgrab;
gint linespace;
gint vscale;
};
struct _GstRevTVClass
{
GstElementClass parent_class;
void (*reset) (GstElement *element);
};
GstElementDetails gst_revtv_details = {
"RevTV",
"Filter/Effect",
"A loopback alpha blending effector with rotating and scaling",
VERSION,
"Wim Taymans <wim.taymans@chello.be>",
"(C) 2001 FUKUCHI Kentarou,"
"(c) 2002 Ed Tannenbaum",
};
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_DELAY,
ARG_LINESPACE,
ARG_GAIN,
};
static void gst_revtv_class_init (GstRevTVClass * klass);
static void gst_revtv_init (GstRevTV * filter);
static void gst_revtv_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_revtv_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_revtv_chain (GstPad * pad, GstBuffer * buf);
static GstElementClass *parent_class = NULL;
/* static guint gst_revtv_signals[LAST_SIGNAL] = { 0 }; */
GType gst_revtv_get_type (void)
{
static GType revtv_type = 0;
if (!revtv_type) {
static const GTypeInfo revtv_info = {
sizeof (GstRevTVClass), NULL,
NULL,
(GClassInitFunc) gst_revtv_class_init,
NULL,
NULL,
sizeof (GstRevTV),
0,
(GInstanceInitFunc) gst_revtv_init,
};
revtv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstRevTV", &revtv_info, 0);
}
return revtv_type;
}
static void
gst_revtv_class_init (GstRevTVClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DELAY,
g_param_spec_int ("delay","Delay","Delay in frames between updates",
1, 100, 1, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LINESPACE,
g_param_spec_int ("linespace","Linespace","Control line spacing",
1, 100, 6, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_GAIN,
g_param_spec_int ("gain","Gain","Control gain",
1, 200, 50, G_PARAM_READWRITE));
gobject_class->set_property = gst_revtv_set_property;
gobject_class->get_property = gst_revtv_get_property;
}
static GstPadConnectReturn
gst_revtv_sinkconnect (GstPad * pad, GstCaps * caps)
{
GstRevTV *filter;
filter = GST_REVTV (gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps))
return GST_PAD_CONNECT_DELAYED;
gst_caps_get_int (caps, "width", &filter->width);
gst_caps_get_int (caps, "height", &filter->height);
if (gst_pad_try_set_caps (filter->srcpad, caps)) {
return GST_PAD_CONNECT_OK;
}
return GST_PAD_CONNECT_REFUSED;
}
static void
gst_revtv_init (GstRevTV * filter)
{
filter->sinkpad = gst_pad_new_from_template (gst_effectv_sink_factory (), "sink");
gst_pad_set_chain_function (filter->sinkpad, gst_revtv_chain);
gst_pad_set_connect_function (filter->sinkpad, gst_revtv_sinkconnect);
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
filter->srcpad = gst_pad_new_from_template (gst_effectv_src_factory (), "src");
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
filter->vgrabtime = 1;
filter->vgrab = 0;
filter->linespace = 6;
filter->vscale = 50;
}
static void
gst_revtv_chain (GstPad * pad, GstBuffer * buf)
{
GstRevTV *filter;
guint32 *src, *dest;
GstBuffer *outbuf;
gint width, height, area;
guint32 *nsrc;
gint y, x, R, G, B, yval;
filter = GST_REVTV (gst_pad_get_parent (pad));
src = (guint32 *) GST_BUFFER_DATA (buf);
width = filter->width;
height = filter->height;
area = width * height;
outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (outbuf) = area * sizeof(guint32);
dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
// draw the offset lines
for (y = 0; y < height ; y += filter->linespace){
for (x = 0; x <= width; x++) {
nsrc = src + (y * width) + x;
// Calc Y Value for curpix
R = ((*nsrc) & 0xff0000) >> (16 - 1);
G = ((*nsrc) & 0xff00) >> (8 - 2);
B = (*nsrc) & 0xff;
yval = y - ((short) (R + G + B) / filter->vscale) ;
if (yval > 0) {
dest[x + (yval * width)] = THE_COLOR;
}
}
}
gst_buffer_unref (buf);
gst_pad_push (filter->srcpad, outbuf);
}
static void
gst_revtv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstRevTV *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_REVTV (object));
filter = GST_REVTV (object);
switch (prop_id) {
case ARG_DELAY:
filter->vgrabtime = g_value_get_int (value);
break;
case ARG_LINESPACE:
filter->linespace = g_value_get_int (value);
break;
case ARG_GAIN:
filter->vscale = g_value_get_int (value);
break;
default:
break;
}
}
static void
gst_revtv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRevTV *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_REVTV (object));
filter = GST_REVTV (object);
switch (prop_id) {
case ARG_DELAY:
g_value_set_int (value, filter->vgrabtime);
break;
case ARG_LINESPACE:
g_value_set_int (value, filter->linespace);
break;
case ARG_GAIN:
g_value_set_int (value, filter->vscale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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