2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
5 * Copyright (C) 2001 FUKUCHI Kentarou
7 * EffecTV is free software. This library is free software;
8 * 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.
30 #include "gsteffectv.h"
32 #define GST_TYPE_QUARKTV \
33 (gst_quarktv_get_type())
34 #define GST_QUARKTV(obj) \
35 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUARKTV,GstQuarkTV))
36 #define GST_QUARKTV_CLASS(klass) \
37 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUARKTV,GstQuarkTVClass))
38 #define GST_IS_QUARKTV(obj) \
39 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUARKTV))
40 #define GST_IS_QUARKTV_CLASS(obj) \
41 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUARKTV))
43 /* number of frames of time-buffer. It should be as a configurable paramter */
44 /* This number also must be 2^n just for the speed. */
47 typedef struct _GstQuarkTV GstQuarkTV;
48 typedef struct _GstQuarkTVClass GstQuarkTVClass;
54 GstPad *sinkpad, *srcpad;
60 GstBuffer **planetable;
63 struct _GstQuarkTVClass
65 GstElementClass parent_class;
68 /* elementfactory information */
69 static GstElementDetails gst_quarktv_details = GST_ELEMENT_DETAILS ("QuarkTV",
70 "Filter/Effect/Video",
72 "FUKUCHI, Kentarou <fukuchi@users.sourceforge.net>");
74 /* Filter signals and args */
87 static void gst_quarktv_base_init (gpointer g_class);
88 static void gst_quarktv_class_init (GstQuarkTVClass * klass);
89 static void gst_quarktv_init (GstQuarkTV * filter);
91 static GstStateChangeReturn gst_quarktv_change_state (GstElement * element,
92 GstStateChange transition);
94 static void gst_quarktv_set_property (GObject * object, guint prop_id,
95 const GValue * value, GParamSpec * pspec);
96 static void gst_quarktv_get_property (GObject * object, guint prop_id,
97 GValue * value, GParamSpec * pspec);
99 static GstFlowReturn gst_quarktv_chain (GstPad * pad, GstBuffer * buffer);
101 static GstElementClass *parent_class = NULL;
103 /* static guint gst_quarktv_signals[LAST_SIGNAL] = { 0 }; */
105 static inline guint32
108 static unsigned int fastrand_val;
110 return (fastrand_val = fastrand_val * 1103515245 + 12345);
114 gst_quarktv_get_type (void)
116 static GType quarktv_type = 0;
119 static const GTypeInfo quarktv_info = {
120 sizeof (GstQuarkTVClass),
121 gst_quarktv_base_init,
123 (GClassInitFunc) gst_quarktv_class_init,
128 (GInstanceInitFunc) gst_quarktv_init,
132 g_type_register_static (GST_TYPE_ELEMENT, "GstQuarkTV", &quarktv_info,
139 gst_quarktv_base_init (gpointer g_class)
141 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
143 gst_element_class_add_pad_template (element_class,
144 gst_static_pad_template_get (&gst_effectv_src_template));
145 gst_element_class_add_pad_template (element_class,
146 gst_static_pad_template_get (&gst_effectv_sink_template));
148 gst_element_class_set_details (element_class, &gst_quarktv_details);
152 gst_quarktv_class_init (GstQuarkTVClass * klass)
154 GObjectClass *gobject_class;
155 GstElementClass *gstelement_class;
157 gobject_class = (GObjectClass *) klass;
158 gstelement_class = (GstElementClass *) klass;
160 parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
162 gobject_class->set_property = gst_quarktv_set_property;
163 gobject_class->get_property = gst_quarktv_get_property;
165 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PLANES,
166 g_param_spec_int ("planes", "Planes", "Number of frames in the buffer",
167 1, 32, PLANES, G_PARAM_READWRITE));
169 gstelement_class->change_state = gst_quarktv_change_state;
172 static GstPadLinkReturn
173 gst_quarktv_link (GstPad * pad, GstPad * peer)
179 //GstStructure *structure;
180 //GstPadLinkReturn res;
182 filter = GST_QUARKTV (gst_pad_get_parent (pad));
183 g_return_val_if_fail (GST_IS_QUARKTV (filter), GST_PAD_LINK_REFUSED);
185 otherpad = (pad == filter->srcpad ? filter->sinkpad : filter->srcpad);
188 res = gst_pad_try_set_caps (otherpad, caps);
189 if (GST_PAD_LINK_FAILED (res))
192 structure = gst_caps_get_structure (caps, 0);
193 if (!gst_structure_get_int (structure, "width", &filter->width) ||
194 !gst_structure_get_int (structure, "height", &filter->height))
195 return GST_PAD_LINK_REFUSED;
197 filter->area = filter->width * filter->height;
199 for (i = 0; i < filter->planes; i++) {
200 if (filter->planetable[i])
201 gst_buffer_unref (filter->planetable[i]);
202 filter->planetable[i] = NULL;
206 return GST_PAD_LINK_OK;
210 gst_quarktv_init (GstQuarkTV * filter)
213 gst_pad_new_from_template (gst_static_pad_template_get
214 (&gst_effectv_sink_template), "sink");
215 //gst_pad_set_getcaps_function (filter->sinkpad, gst_pad_proxy_getcaps);
216 gst_pad_set_chain_function (filter->sinkpad, gst_quarktv_chain);
217 gst_pad_set_link_function (filter->sinkpad, gst_quarktv_link);
218 gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
221 gst_pad_new_from_template (gst_static_pad_template_get
222 (&gst_effectv_src_template), "src");
223 //gst_pad_set_getcaps_function (filter->srcpad, gst_pad_proxy_getcaps);
224 gst_pad_set_link_function (filter->srcpad, gst_quarktv_link);
225 gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
227 filter->planes = PLANES;
228 filter->current_plane = filter->planes - 1;
232 gst_quarktv_chain (GstPad * pad, GstBuffer * buf)
240 filter = GST_QUARKTV (gst_pad_get_parent (pad));
242 src = (guint32 *) GST_BUFFER_DATA (buf);
247 gst_pad_alloc_buffer (filter->srcpad, 0, area, GST_PAD_CAPS (pad),
249 if (ret != GST_FLOW_OK)
252 dest = (guint32 *) GST_BUFFER_DATA (outbuf);
253 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
255 if (filter->planetable[filter->current_plane])
256 gst_buffer_unref (filter->planetable[filter->current_plane]);
258 filter->planetable[filter->current_plane] = buf;
263 /* pick a random buffer */
265 filter->planetable[(filter->current_plane +
266 (fastrand () >> 24)) & (filter->planes - 1)];
268 dest[area] = (rand ? ((guint32 *) GST_BUFFER_DATA (rand))[area] : 0);
271 ret = gst_pad_push (filter->srcpad, outbuf);
273 filter->current_plane--;
274 if (filter->current_plane < 0)
275 filter->current_plane = filter->planes - 1;
285 static GstStateChangeReturn
286 gst_quarktv_change_state (GstElement * element, GstStateChange transition)
288 GstQuarkTV *filter = GST_QUARKTV (element);
290 switch (transition) {
291 case GST_STATE_CHANGE_PAUSED_TO_READY:
295 for (i = 0; i < filter->planes; i++) {
296 if (filter->planetable[i])
297 gst_buffer_unref (filter->planetable[i]);
298 filter->planetable[i] = NULL;
300 g_free (filter->planetable);
301 filter->planetable = NULL;
304 case GST_STATE_CHANGE_READY_TO_PAUSED:
307 (GstBuffer **) g_malloc (filter->planes * sizeof (GstBuffer *));
308 memset (filter->planetable, 0, filter->planes * sizeof (GstBuffer *));
315 return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
320 gst_quarktv_set_property (GObject * object, guint prop_id, const GValue * value,
325 g_return_if_fail (GST_IS_QUARKTV (object));
327 filter = GST_QUARKTV (object);
332 gint new_n_planes = g_value_get_int (value);
333 GstBuffer **new_planetable;
336 /* If the number of planes changed, copy across any existing planes */
337 if (new_n_planes != filter->planes) {
339 (GstBuffer **) g_malloc (new_n_planes * sizeof (GstBuffer *));
341 for (i = 0; (i < new_n_planes) && (i < filter->planes); i++) {
342 new_planetable[i] = filter->planetable[i];
344 for (; i < filter->planes; i++) {
345 if (filter->planetable[i])
346 gst_buffer_unref (filter->planetable[i]);
348 g_free (filter->planetable);
349 filter->planetable = new_planetable;
350 filter->current_plane = filter->planes - 1;
351 filter->planes = new_n_planes;
356 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
362 gst_quarktv_get_property (GObject * object, guint prop_id, GValue * value,
367 g_return_if_fail (GST_IS_QUARKTV (object));
369 filter = GST_QUARKTV (object);
373 g_value_set_int (value, filter->planes);
376 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);