2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David Schleef <ds@schleef.org>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 * This file was (probably) generated from gstvideobalance.c,
23 * gstvideobalance.c,v 1.7 2003/11/08 02:48:59 dschleef Exp
30 /*#define DEBUG_ENABLED */
31 #include <gstvideobalance.h>
33 #include <liboil/liboil.h>
38 #include <gst/colorbalance/colorbalance.h>
40 /* GstVideobalance signals and args */
57 static GstVideofilterClass *parent_class = NULL;
59 static void gst_videobalance_base_init (gpointer g_class);
60 static void gst_videobalance_class_init (gpointer g_class, gpointer class_data);
61 static void gst_videobalance_init (GTypeInstance * instance, gpointer g_class);
63 static void gst_videobalance_set_property (GObject * object, guint prop_id,
64 const GValue * value, GParamSpec * pspec);
65 static void gst_videobalance_get_property (GObject * object, guint prop_id,
66 GValue * value, GParamSpec * pspec);
68 static void gst_videobalance_planar411 (GstVideofilter * videofilter,
69 void *dest, void *src);
70 static void gst_videobalance_setup (GstVideofilter * videofilter);
72 static void gst_videobalance_interface_init (GstImplementsInterfaceClass *
74 static void gst_videobalance_colorbalance_init (GstColorBalanceClass * iface);
76 static void gst_videobalance_dispose (GObject * object);
77 static void gst_videobalance_update_properties (GstVideobalance * videobalance);
80 gst_videobalance_get_type (void)
82 static GType videobalance_type = 0;
84 if (!videobalance_type) {
85 static const GTypeInfo videobalance_info = {
86 sizeof (GstVideobalanceClass),
87 gst_videobalance_base_init,
89 gst_videobalance_class_init,
92 sizeof (GstVideobalance),
94 gst_videobalance_init,
97 static const GInterfaceInfo iface_info = {
98 (GInterfaceInitFunc) gst_videobalance_interface_init,
103 static const GInterfaceInfo colorbalance_info = {
104 (GInterfaceInitFunc) gst_videobalance_colorbalance_init,
109 videobalance_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
110 "GstVideobalance", &videobalance_info, 0);
112 g_type_add_interface_static (videobalance_type,
113 GST_TYPE_IMPLEMENTS_INTERFACE, &iface_info);
114 g_type_add_interface_static (videobalance_type, GST_TYPE_COLOR_BALANCE,
117 return videobalance_type;
120 static GstVideofilterFormat gst_videobalance_formats[] = {
121 {"I420", 12, gst_videobalance_planar411,},
126 gst_videobalance_base_init (gpointer g_class)
128 static GstElementDetails videobalance_details =
129 GST_ELEMENT_DETAILS ("Video Balance Control",
130 "Filter/Effect/Video",
131 "Adjusts brightness, contrast, hue, saturation on a video stream",
132 "David Schleef <ds@schleef.org>");
133 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
134 GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
137 gst_element_class_set_details (element_class, &videobalance_details);
139 for (i = 0; i < G_N_ELEMENTS (gst_videobalance_formats); i++) {
140 gst_videofilter_class_add_format (videofilter_class,
141 gst_videobalance_formats + i);
144 gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class));
148 gst_videobalance_dispose (GObject * object)
150 GList *channels = NULL;
151 GstVideobalance *balance;
154 balance = GST_VIDEOBALANCE (object);
156 for (i = 0; i < 256; i++) {
157 g_free (balance->tableu[i]);
158 g_free (balance->tablev[i]);
160 g_free (balance->tabley);
161 g_free (balance->tableu);
162 g_free (balance->tablev);
164 channels = balance->channels;
167 GstColorBalanceChannel *channel = channels->data;
169 g_object_unref (channel);
170 channels = g_list_next (channels);
173 if (balance->channels)
174 g_list_free (balance->channels);
176 G_OBJECT_CLASS (parent_class)->dispose (object);
180 gst_videobalance_class_init (gpointer g_class, gpointer class_data)
182 GObjectClass *gobject_class;
183 GstVideofilterClass *videofilter_class;
185 gobject_class = G_OBJECT_CLASS (g_class);
186 videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
188 parent_class = g_type_class_ref (GST_TYPE_VIDEOFILTER);
190 g_object_class_install_property (gobject_class, ARG_CONTRAST,
191 g_param_spec_double ("contrast", "Contrast", "contrast",
192 0, 2, 1, G_PARAM_READWRITE));
193 g_object_class_install_property (gobject_class, ARG_BRIGHTNESS,
194 g_param_spec_double ("brightness", "Brightness", "brightness",
195 -1, 1, 0, G_PARAM_READWRITE));
196 g_object_class_install_property (gobject_class, ARG_HUE,
197 g_param_spec_double ("hue", "Hue", "hue", -1, 1, 0, G_PARAM_READWRITE));
198 g_object_class_install_property (gobject_class, ARG_SATURATION,
199 g_param_spec_double ("saturation", "Saturation", "saturation",
200 0, 2, 1, G_PARAM_READWRITE));
202 gobject_class->set_property = gst_videobalance_set_property;
203 gobject_class->get_property = gst_videobalance_get_property;
204 gobject_class->dispose = gst_videobalance_dispose;
206 videofilter_class->setup = gst_videobalance_setup;
214 gst_videobalance_init (GTypeInstance * instance, gpointer g_class)
216 GstVideobalance *videobalance = GST_VIDEOBALANCE (instance);
217 GstVideofilter *videofilter;
218 char *channels[4] = { "HUE", "SATURATION",
219 "BRIGHTNESS", "CONTRAST"
223 GST_DEBUG ("gst_videobalance_init");
225 videofilter = GST_VIDEOFILTER (videobalance);
228 videobalance->contrast = 1.0;
229 videobalance->brightness = 0.0;
230 videobalance->saturation = 1.0;
231 videobalance->hue = 0.0;
233 videobalance->needupdate = FALSE;
234 videofilter->passthru = TRUE;
236 videobalance->tabley = g_new (guint8, 256);
237 videobalance->tableu = g_new (guint8 *, 256);
238 videobalance->tablev = g_new (guint8 *, 256);
239 for (i = 0; i < 256; i++) {
240 videobalance->tableu[i] = g_new (guint8, 256);
241 videobalance->tablev[i] = g_new (guint8, 256);
244 /* Generate the channels list */
245 for (i = 0; i < (sizeof (channels) / sizeof (char *)); i++) {
246 GstColorBalanceChannel *channel;
248 channel = g_object_new (GST_TYPE_COLOR_BALANCE_CHANNEL, NULL);
249 channel->label = g_strdup (channels[i]);
250 channel->min_value = -1000;
251 channel->max_value = 1000;
253 videobalance->channels = g_list_append (videobalance->channels, channel);
259 gst_videobalance_interface_supported (GstImplementsInterface * iface,
262 g_assert (type == GST_TYPE_COLOR_BALANCE);
267 gst_videobalance_interface_init (GstImplementsInterfaceClass * klass)
269 klass->supported = gst_videobalance_interface_supported;
273 gst_videobalance_colorbalance_list_channels (GstColorBalance * balance)
275 GstVideobalance *videobalance = GST_VIDEOBALANCE (balance);
277 g_return_val_if_fail (videobalance != NULL, NULL);
278 g_return_val_if_fail (GST_IS_VIDEOBALANCE (videobalance), NULL);
280 return videobalance->channels;
284 gst_videobalance_colorbalance_set_value (GstColorBalance * balance,
285 GstColorBalanceChannel * channel, gint value)
287 GstVideobalance *vb = GST_VIDEOBALANCE (balance);
288 GstVideofilter *vf = GST_VIDEOFILTER (vb);
290 g_return_if_fail (vb != NULL);
291 g_return_if_fail (GST_IS_VIDEOBALANCE (vb));
292 g_return_if_fail (GST_IS_VIDEOFILTER (vf));
293 g_return_if_fail (channel->label != NULL);
295 if (!g_ascii_strcasecmp (channel->label, "HUE")) {
296 vb->hue = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
297 } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
298 vb->saturation = (value + 1000.0) * 2.0 / 2000.0;
299 } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
300 vb->brightness = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
301 } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
302 vb->contrast = (value + 1000.0) * 2.0 / 2000.0;
305 gst_videobalance_update_properties (vb);
309 gst_videobalance_colorbalance_get_value (GstColorBalance * balance,
310 GstColorBalanceChannel * channel)
312 GstVideobalance *vb = GST_VIDEOBALANCE (balance);
315 g_return_val_if_fail (vb != NULL, 0);
316 g_return_val_if_fail (GST_IS_VIDEOBALANCE (vb), 0);
317 g_return_val_if_fail (channel->label != NULL, 0);
319 if (!g_ascii_strcasecmp (channel->label, "HUE")) {
320 value = (vb->hue + 1) * 2000.0 / 2.0 - 1000.0;
321 } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
322 value = vb->saturation * 2000.0 / 2.0 - 1000.0;
323 } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
324 value = (vb->brightness + 1) * 2000.0 / 2.0 - 1000.0;
325 } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
326 value = vb->contrast * 2000.0 / 2.0 - 1000.0;
333 gst_videobalance_colorbalance_init (GstColorBalanceClass * iface)
335 GST_COLOR_BALANCE_TYPE (iface) = GST_COLOR_BALANCE_SOFTWARE;
336 iface->list_channels = gst_videobalance_colorbalance_list_channels;
337 iface->set_value = gst_videobalance_colorbalance_set_value;
338 iface->get_value = gst_videobalance_colorbalance_get_value;
342 gst_videobalance_update_properties (GstVideobalance * videobalance)
344 GstVideofilter *vf = GST_VIDEOFILTER (videobalance);
346 videobalance->needupdate = TRUE;
348 if (videobalance->contrast == 1.0 &&
349 videobalance->brightness == 0.0 &&
350 videobalance->hue == 0.0 && videobalance->saturation == 1.0) {
353 vf->passthru = FALSE;
358 gst_videobalance_set_property (GObject * object, guint prop_id,
359 const GValue * value, GParamSpec * pspec)
361 GstVideobalance *src;
363 /* it's not null if we got it, but it might not be ours */
364 g_return_if_fail (GST_IS_VIDEOBALANCE (object));
365 src = GST_VIDEOBALANCE (object);
367 GST_DEBUG ("gst_videobalance_set_property");
370 src->contrast = g_value_get_double (value);
373 src->brightness = g_value_get_double (value);
376 src->hue = g_value_get_double (value);
379 src->saturation = g_value_get_double (value);
385 gst_videobalance_update_properties (src);
389 gst_videobalance_get_property (GObject * object, guint prop_id, GValue * value,
392 GstVideobalance *src;
394 /* it's not null if we got it, but it might not be ours */
395 g_return_if_fail (GST_IS_VIDEOBALANCE (object));
396 src = GST_VIDEOBALANCE (object);
400 g_value_set_double (value, src->contrast);
403 g_value_set_double (value, src->brightness);
406 g_value_set_double (value, src->hue);
409 g_value_set_double (value, src->saturation);
412 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
418 plugin_init (GstPlugin * plugin)
420 if (!gst_library_load ("gstvideofilter"))
423 return gst_element_register (plugin, "videobalance", GST_RANK_NONE,
424 GST_TYPE_VIDEOBALANCE);
427 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
430 "Changes hue, saturation, brightness etc. on video images",
431 plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)
433 static void gst_videobalance_setup (GstVideofilter * videofilter)
435 GstVideobalance *videobalance;
437 g_return_if_fail (GST_IS_VIDEOBALANCE (videofilter));
438 videobalance = GST_VIDEOBALANCE (videofilter);
440 /* if any setup needs to be done, do it here */
445 * look-up tables (LUT).
449 gst_videobalance_update_tables_planar411 (GstVideobalance * vb)
452 gdouble y, u, v, hue_cos, hue_sin;
455 for (i = 0; i < 256; i++) {
456 y = 16 + ((i - 16) * vb->contrast + vb->brightness * 255);
461 vb->tabley[i] = rint (y);
464 /* FIXME this is a bogus transformation for hue, but you get
466 hue_cos = cos (M_PI * vb->hue);
467 hue_sin = sin (M_PI * vb->hue);
469 /* U/V lookup tables are 2D, since we need both U/V for each table
471 for (i = -128; i < 128; i++) {
472 for (j = -128; j < 128; j++) {
473 u = 128 + ((i * hue_cos + j * hue_sin) * vb->saturation);
474 v = 128 + ((-i * hue_sin + j * hue_cos) * vb->saturation);
483 vb->tableu[i + 128][j + 128] = rint (u);
484 vb->tablev[i + 128][j + 128] = rint (v);
491 tablelookup_u8 (guint8 * dest, int dstr, guint8 * src, int sstr,
492 guint8 * table, int tstr, int n)
496 for (i = 0; i < n; i++) {
497 *dest = table[*src * tstr];
505 gst_videobalance_planar411 (GstVideofilter * videofilter, void *dest, void *src)
507 GstVideobalance *videobalance;
512 g_return_if_fail (GST_IS_VIDEOBALANCE (videofilter));
513 videobalance = GST_VIDEOBALANCE (videofilter);
515 if (videobalance->needupdate) {
516 gst_videobalance_update_tables_planar411 (videobalance);
517 videobalance->needupdate = FALSE;
520 width = videofilter->from_width;
521 height = videofilter->from_height;
524 guint8 *cdest = dest;
527 for (y = 0; y < height; y++) {
528 tablelookup_u8 (cdest + y * width, 1, csrc + y * width, 1,
529 videobalance->tabley, 1, width);
536 guint8 *udest, *vdest;
538 usrc = src + width * height;
539 udest = dest + width * height;
540 vsrc = src + width * height + (width / 2) * (height / 2);
541 vdest = dest + width * height + (width / 2) * (height / 2);
543 for (y = 0; y < height / 2; y++) {
544 for (x = 0; x < width / 2; x++) {
545 u1 = usrc[y * (width / 2) + x];
546 v1 = vsrc[y * (width / 2) + x];
547 udest[y * (width / 2) + x] = videobalance->tableu[u1][v1];
548 vdest[y * (width / 2) + x] = videobalance->tablev[u1][v1];