gstreamer/gst/effectv/gstwarp.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003> David Schleef <ds@schleef.org>
*
* EffecTV - Realtime Digital Video Effector
* Copyright (C) 2001 FUKUCHI Kentarou
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* This file was (probably) generated from gstvideotemplate.c,
* gstvideotemplate.c,v 1.11 2004/01/07 08:56:45 ds Exp
*/
/* From main.c of warp-1.1:
*
* Simple DirectMedia Layer demo
* Realtime picture 'gooing'
* by sam lantinga slouken@devolution.com
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gstvideofilter.h>
#include <string.h>
#include <math.h>
#include "gsteffectv.h"
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#define GST_TYPE_WARPTV \
(gst_warptv_get_type())
#define GST_WARPTV(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WARPTV,GstWarpTV))
#define GST_WARPTV_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WARPTV,GstWarpTVClass))
#define GST_IS_WARPTV(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WARPTV))
#define GST_IS_WARPTV_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WARPTV))
typedef struct _GstWarpTV GstWarpTV;
typedef struct _GstWarpTVClass GstWarpTVClass;
struct _GstWarpTV
{
GstVideofilter videofilter;
gint width, height;
gint *offstable;
gint32 *disttable;
gint32 ctable[1024];
gint32 sintable[1024 + 256];
gint tval;
};
struct _GstWarpTVClass
{
GstVideofilterClass parent_class;
};
/* GstWarpTV signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
/* FILL ME */
};
static void gst_warptv_base_init (gpointer g_class);
static void gst_warptv_class_init (gpointer g_class, gpointer class_data);
static void gst_warptv_init (GTypeInstance * instance, gpointer g_class);
static void gst_warptv_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_warptv_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_warptv_setup (GstVideofilter * videofilter);
static void initSinTable (GstWarpTV * filter);
static void initOffsTable (GstWarpTV * filter);
static void initDistTable (GstWarpTV * filter);
static void gst_warptv_rgb32 (GstVideofilter * videofilter, void *d, void *s);
GType
gst_warptv_get_type (void)
{
static GType warptv_type = 0;
if (!warptv_type) {
static const GTypeInfo warptv_info = {
sizeof (GstWarpTVClass),
gst_warptv_base_init,
NULL,
gst_warptv_class_init,
NULL,
NULL,
sizeof (GstWarpTV),
0,
gst_warptv_init,
};
warptv_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
"GstWarpTV", &warptv_info, 0);
}
return warptv_type;
}
static GstVideofilterFormat gst_warptv_formats[] = {
{"RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0x00ff0000, 0x0000ff00,
0x000000ff},
{"RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0xff000000, 0x00ff0000,
0x0000ff00},
{"RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0x000000ff, 0x0000ff00,
0x00ff0000},
{"RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0x0000ff00, 0x00ff0000,
0xff000000},
};
static void
gst_warptv_base_init (gpointer g_class)
{
static GstElementDetails warptv_details = GST_ELEMENT_DETAILS ("WarpTV",
"Filter/Effect/Video",
"WarpTV does realtime goo'ing of the video input",
"Sam Lantinga <slouken@devolution.com>");
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
int i;
gst_element_class_set_details (element_class, &warptv_details);
for (i = 0; i < G_N_ELEMENTS (gst_warptv_formats); i++) {
gst_videofilter_class_add_format (videofilter_class,
gst_warptv_formats + i);
}
gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class));
}
static void
gst_warptv_class_init (gpointer g_class, gpointer class_data)
{
GObjectClass *gobject_class;
GstVideofilterClass *videofilter_class;
gobject_class = G_OBJECT_CLASS (g_class);
videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
gobject_class->set_property = gst_warptv_set_property;
gobject_class->get_property = gst_warptv_get_property;
#if 0
g_object_class_install_property (gobject_class, ARG_METHOD,
g_param_spec_enum ("method", "method", "method",
GST_TYPE_WARPTV_METHOD, GST_WARPTV_METHOD_1, G_PARAM_READWRITE));
#endif
videofilter_class->setup = gst_warptv_setup;
}
static void
gst_warptv_init (GTypeInstance * instance, gpointer g_class)
{
GstWarpTV *warptv = GST_WARPTV (instance);
GstVideofilter *videofilter;
GST_DEBUG ("gst_warptv_init");
videofilter = GST_VIDEOFILTER (warptv);
/* do stuff */
}
static void
gst_warptv_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstWarpTV *src;
g_return_if_fail (GST_IS_WARPTV (object));
src = GST_WARPTV (object);
GST_DEBUG ("gst_warptv_set_property");
switch (prop_id) {
#if 0
case ARG_METHOD:
src->method = g_value_get_enum (value);
break;
#endif
default:
break;
}
}
static void
gst_warptv_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstWarpTV *src;
g_return_if_fail (GST_IS_WARPTV (object));
src = GST_WARPTV (object);
switch (prop_id) {
#if 0
case ARG_METHOD:
g_value_set_enum (value, src->method);
break;
#endif
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_warptv_setup (GstVideofilter * videofilter)
{
GstWarpTV *warptv;
int width = gst_videofilter_get_input_width (videofilter);
int height = gst_videofilter_get_input_height (videofilter);
g_return_if_fail (GST_IS_WARPTV (videofilter));
warptv = GST_WARPTV (videofilter);
/* if any setup needs to be done, do it here */
warptv->width = width;
warptv->height = height;
#if 0
/* FIXME this should be reset in PAUSE->READY, not here */
warptv->tval = 0;
#endif
g_free (warptv->disttable);
g_free (warptv->offstable);
warptv->offstable = g_malloc (height * sizeof (guint32));
warptv->disttable = g_malloc (width * height * sizeof (guint32));
initSinTable (warptv);
initOffsTable (warptv);
initDistTable (warptv);
}
static void
initSinTable (GstWarpTV * filter)
{
gint32 *tptr, *tsinptr;
double i;
tsinptr = tptr = filter->sintable;
for (i = 0; i < 1024; i++)
*tptr++ = (int) (sin (i * M_PI / 512) * 32767);
for (i = 0; i < 256; i++)
*tptr++ = *tsinptr++;
}
static void
initOffsTable (GstWarpTV * filter)
{
int y;
for (y = 0; y < filter->height; y++) {
filter->offstable[y] = y * filter->width;
}
}
static void
initDistTable (GstWarpTV * filter)
{
gint32 halfw, halfh, *distptr;
#ifdef PS2
float x, y, m;
#else
double x, y, m;
#endif
halfw = filter->width >> 1;
halfh = filter->height >> 1;
distptr = filter->disttable;
m = sqrt ((double) (halfw * halfw + halfh * halfh));
for (y = -halfh; y < halfh; y++)
for (x = -halfw; x < halfw; x++)
#ifdef PS2
*distptr++ = ((int) ((sqrtf (x * x + y * y) * 511.9999) / m)) << 1;
#else
*distptr++ = ((int) ((sqrt (x * x + y * y) * 511.9999) / m)) << 1;
#endif
}
static void
gst_warptv_rgb32 (GstVideofilter * videofilter, void *d, void *s)
{
GstWarpTV *warptv;
int width = gst_videofilter_get_input_width (videofilter);
int height = gst_videofilter_get_input_height (videofilter);
guint32 *src = s;
guint32 *dest = d;
gint xw, yw, cw;
gint32 c, i, x, y, dx, dy, maxx, maxy;
gint32 skip, *ctptr, *distptr;
gint32 *sintable, *ctable;
g_return_if_fail (GST_IS_WARPTV (videofilter));
warptv = GST_WARPTV (videofilter);
xw = (gint) (sin ((warptv->tval + 100) * M_PI / 128) * 30);
yw = (gint) (sin ((warptv->tval) * M_PI / 256) * -35);
cw = (gint) (sin ((warptv->tval - 70) * M_PI / 64) * 50);
xw += (gint) (sin ((warptv->tval - 10) * M_PI / 512) * 40);
yw += (gint) (sin ((warptv->tval + 30) * M_PI / 512) * 40);
ctptr = warptv->ctable;
distptr = warptv->disttable;
sintable = warptv->sintable;
ctable = warptv->ctable;
skip = 0; /* video_width*sizeof(RGB32)/4 - video_width;; */
c = 0;
for (x = 0; x < 512; x++) {
i = (c >> 3) & 0x3FE;
*ctptr++ = ((sintable[i] * yw) >> 15);
*ctptr++ = ((sintable[i + 256] * xw) >> 15);
c += cw;
}
maxx = width - 2;
maxy = height - 2;
for (y = 0; y < height - 1; y++) {
for (x = 0; x < width; x++) {
i = *distptr++;
dx = ctable[i + 1] + x;
dy = ctable[i] + y;
if (dx < 0)
dx = 0;
else if (dx > maxx)
dx = maxx;
if (dy < 0)
dy = 0;
else if (dy > maxy)
dy = maxy;
*dest++ = src[warptv->offstable[dy] + dx];
}
dest += skip;
}
warptv->tval = (warptv->tval + 1) & 511;
}