2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David Schleef <ds@schleef.org>
5 * EffecTV - Realtime Digital Video Effector
6 * Copyright (C) 2001 FUKUCHI Kentarou
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
25 * This file was (probably) generated from gstvideotemplate.c,
26 * gstvideotemplate.c,v 1.11 2004/01/07 08:56:45 ds Exp
29 /* From main.c of warp-1.1:
31 * Simple DirectMedia Layer demo
32 * Realtime picture 'gooing'
33 * by sam lantinga slouken@devolution.com
41 #include <gstvideofilter.h>
44 #include "gsteffectv.h"
47 #define M_PI 3.14159265358979323846
51 #define GST_TYPE_WARPTV \
52 (gst_warptv_get_type())
53 #define GST_WARPTV(obj) \
54 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WARPTV,GstWarpTV))
55 #define GST_WARPTV_CLASS(klass) \
56 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WARPTV,GstWarpTVClass))
57 #define GST_IS_WARPTV(obj) \
58 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WARPTV))
59 #define GST_IS_WARPTV_CLASS(obj) \
60 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WARPTV))
62 typedef struct _GstWarpTV GstWarpTV;
63 typedef struct _GstWarpTVClass GstWarpTVClass;
66 GstVideofilter videofilter;
72 gint32 sintable[1024+256];
76 struct _GstWarpTVClass {
77 GstVideofilterClass parent_class;
81 /* GstWarpTV signals and args */
92 static void gst_warptv_base_init (gpointer g_class);
93 static void gst_warptv_class_init (gpointer g_class, gpointer class_data);
94 static void gst_warptv_init (GTypeInstance *instance, gpointer g_class);
96 static void gst_warptv_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
97 static void gst_warptv_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
99 static void gst_warptv_setup(GstVideofilter *videofilter);
100 static void initSinTable (GstWarpTV *filter);
101 static void initOffsTable (GstWarpTV *filter);
102 static void initDistTable (GstWarpTV *filter);
103 static void gst_warptv_rgb32 (GstVideofilter *videofilter, void *d, void *s);
106 gst_warptv_get_type (void)
108 static GType warptv_type = 0;
111 static const GTypeInfo warptv_info = {
112 sizeof(GstWarpTVClass),
113 gst_warptv_base_init,
115 gst_warptv_class_init,
122 warptv_type = g_type_register_static(GST_TYPE_VIDEOFILTER,
123 "GstWarpTV", &warptv_info, 0);
128 static GstVideofilterFormat gst_warptv_formats[] = {
129 { "RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0x00ff0000, 0x0000ff00, 0x000000ff },
130 { "RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0xff000000, 0x00ff0000, 0x0000ff00 },
131 { "RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0x000000ff, 0x0000ff00, 0x00ff0000 },
132 { "RGB ", 32, gst_warptv_rgb32, 24, G_BIG_ENDIAN, 0x0000ff00, 0x00ff0000, 0xff000000 },
136 gst_warptv_base_init (gpointer g_class)
138 static GstElementDetails warptv_details = GST_ELEMENT_DETAILS (
140 "Filter/Effect/Video",
141 "WarpTV does realtime goo'ing of the video input",
142 "Sam Lantinga <slouken@devolution.com>"
144 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
145 GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
148 gst_element_class_set_details (element_class, &warptv_details);
150 for(i=0;i<G_N_ELEMENTS(gst_warptv_formats);i++){
151 gst_videofilter_class_add_format(videofilter_class,
152 gst_warptv_formats + i);
155 gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class));
159 gst_warptv_class_init (gpointer g_class, gpointer class_data)
161 GObjectClass *gobject_class;
162 GstVideofilterClass *videofilter_class;
164 gobject_class = G_OBJECT_CLASS (g_class);
165 videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
168 g_object_class_install_property(gobject_class, ARG_METHOD,
169 g_param_spec_enum("method","method","method",
170 GST_TYPE_WARPTV_METHOD, GST_WARPTV_METHOD_1,
174 gobject_class->set_property = gst_warptv_set_property;
175 gobject_class->get_property = gst_warptv_get_property;
177 videofilter_class->setup = gst_warptv_setup;
181 gst_warptv_init (GTypeInstance *instance, gpointer g_class)
183 GstWarpTV *warptv = GST_WARPTV (instance);
184 GstVideofilter *videofilter;
186 GST_DEBUG("gst_warptv_init");
188 videofilter = GST_VIDEOFILTER(warptv);
194 gst_warptv_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
198 /* it's not null if we got it, but it might not be ours */
199 g_return_if_fail(GST_IS_WARPTV(object));
200 src = GST_WARPTV(object);
202 GST_DEBUG("gst_warptv_set_property");
206 src->method = g_value_get_enum (value);
215 gst_warptv_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
219 /* it's not null if we got it, but it might not be ours */
220 g_return_if_fail(GST_IS_WARPTV(object));
221 src = GST_WARPTV(object);
226 g_value_set_enum (value, src->method);
230 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
236 static void gst_warptv_setup(GstVideofilter *videofilter)
239 int width = gst_videofilter_get_input_width(videofilter);
240 int height = gst_videofilter_get_input_height(videofilter);
242 g_return_if_fail(GST_IS_WARPTV(videofilter));
243 warptv = GST_WARPTV(videofilter);
245 /* if any setup needs to be done, do it here */
247 warptv->width = width;
248 warptv->height = height;
250 /* FIXME this should be reset in PAUSE->READY, not here */
254 g_free (warptv->disttable);
255 g_free (warptv->offstable);
257 warptv->offstable = (guint32 *) g_malloc (height * sizeof (guint32));
258 warptv->disttable = g_malloc (width * height * sizeof (guint32));
260 initSinTable (warptv);
261 initOffsTable (warptv);
262 initDistTable (warptv);
266 initSinTable (GstWarpTV *filter)
268 gint32 *tptr, *tsinptr;
271 tsinptr = tptr = filter->sintable;
273 for (i = 0; i < 1024; i++)
274 *tptr++ = (int) (sin (i * M_PI / 512) * 32767);
276 for (i = 0; i < 256; i++)
277 *tptr++ = *tsinptr++;
281 initOffsTable (GstWarpTV *filter)
285 for (y = 0; y < filter->height; y++) {
286 filter->offstable[y] = y * filter->width;
291 initDistTable (GstWarpTV *filter)
293 gint32 halfw, halfh, *distptr;
300 halfw = filter->width>> 1;
301 halfh = filter->height >> 1;
303 distptr = filter->disttable;
305 m = sqrt ((double)(halfw * halfw + halfh * halfh));
307 for (y = -halfh; y < halfh; y++)
308 for (x= -halfw; x < halfw; x++)
310 *distptr++ = ((int) ((sqrtf (x * x + y * y) * 511.9999) / m)) << 1;
312 *distptr++ = ((int) ((sqrt (x * x + y * y) * 511.9999) / m)) << 1;
316 static void gst_warptv_rgb32 (GstVideofilter *videofilter,
320 int width = gst_videofilter_get_input_width(videofilter);
321 int height = gst_videofilter_get_input_height(videofilter);
325 gint32 c,i, x,y, dx,dy, maxx, maxy;
326 gint32 skip, *ctptr, *distptr;
327 gint32 *sintable, *ctable;
329 g_return_if_fail(GST_IS_WARPTV(videofilter));
330 warptv = GST_WARPTV(videofilter);
332 xw = (gint) (sin ((warptv->tval + 100) * M_PI / 128) * 30);
333 yw = (gint) (sin ((warptv->tval) * M_PI / 256) * -35);
334 cw = (gint) (sin ((warptv->tval - 70) * M_PI / 64) * 50);
335 xw += (gint) (sin ((warptv->tval - 10) * M_PI / 512) * 40);
336 yw += (gint) (sin ((warptv->tval + 30) * M_PI / 512) * 40);
338 ctptr = warptv->ctable;
339 distptr = warptv->disttable;
340 sintable = warptv->sintable;
341 ctable = warptv->ctable;
343 skip = 0 ; /* video_width*sizeof(RGB32)/4 - video_width;; */
346 for (x = 0; x < 512; x++) {
347 i = (c >> 3) & 0x3FE;
348 *ctptr++ = ((sintable[i] * yw) >> 15);
349 *ctptr++ = ((sintable[i + 256] * xw) >> 15);
352 maxx = width - 2; maxy = height - 2;
354 for (y = 0; y < height - 1; y++) {
355 for (x = 0; x < width; x++) {
357 dx = ctable [i + 1] + x;
361 else if (dx > maxx) dx = maxx;
364 else if (dy > maxy) dy = maxy;
365 *dest++ = src[warptv->offstable[dy] + dx];
370 warptv->tval = (warptv->tval + 1) & 511;