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 #include "gstvideobalance.h"
32 #include <liboil/liboil.h>
37 #include <gst/colorbalance/colorbalance.h>
39 /* GstVideobalance signals and args */
50 static GstVideofilterClass *parent_class = NULL;
52 static void gst_videobalance_base_init (gpointer g_class);
53 static void gst_videobalance_class_init (gpointer g_class, gpointer class_data);
54 static void gst_videobalance_init (GTypeInstance * instance, gpointer g_class);
56 static void gst_videobalance_set_property (GObject * object, guint prop_id,
57 const GValue * value, GParamSpec * pspec);
58 static void gst_videobalance_get_property (GObject * object, guint prop_id,
59 GValue * value, GParamSpec * pspec);
61 static void gst_videobalance_planar411 (GstVideofilter * videofilter,
62 void *dest, void *src);
63 static void gst_videobalance_setup (GstVideofilter * videofilter);
65 static void gst_videobalance_interface_init (GstImplementsInterfaceClass *
67 static void gst_videobalance_colorbalance_init (GstColorBalanceClass * iface);
69 static void gst_videobalance_dispose (GObject * object);
70 static void gst_videobalance_update_properties (GstVideobalance * videobalance);
73 gst_videobalance_get_type (void)
75 static GType videobalance_type = 0;
77 if (!videobalance_type) {
78 static const GTypeInfo videobalance_info = {
79 sizeof (GstVideobalanceClass),
80 gst_videobalance_base_init,
82 gst_videobalance_class_init,
85 sizeof (GstVideobalance),
87 gst_videobalance_init,
90 static const GInterfaceInfo iface_info = {
91 (GInterfaceInitFunc) gst_videobalance_interface_init,
96 static const GInterfaceInfo colorbalance_info = {
97 (GInterfaceInitFunc) gst_videobalance_colorbalance_init,
102 videobalance_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
103 "GstVideobalance", &videobalance_info, 0);
105 g_type_add_interface_static (videobalance_type,
106 GST_TYPE_IMPLEMENTS_INTERFACE, &iface_info);
107 g_type_add_interface_static (videobalance_type, GST_TYPE_COLOR_BALANCE,
110 return videobalance_type;
114 gst_videobalance_base_init (gpointer g_class)
116 static GstElementDetails videobalance_details =
117 GST_ELEMENT_DETAILS ("Video Balance Control",
118 "Filter/Effect/Video",
119 "Adjusts brightness, contrast, hue, saturation on a video stream",
120 "David Schleef <ds@schleef.org>");
121 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
122 GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
125 gst_element_class_set_details (element_class, &videobalance_details);
127 for (i = 0; i < G_N_ELEMENTS (gst_videobalance_formats); i++) {
128 gst_videofilter_class_add_format (videofilter_class,
129 gst_videobalance_formats + i);
132 gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class));
136 gst_videobalance_dispose (GObject * object)
138 GList *channels = NULL;
139 GstVideobalance *balance;
142 balance = GST_VIDEOBALANCE (object);
144 if (balance->tableu) {
145 for (i = 0; i < 256; i++)
146 g_free (balance->tableu[i]);
147 g_free (balance->tableu);
148 balance->tableu = NULL;
151 if (balance->tablev) {
152 for (i = 0; i < 256; i++)
153 g_free (balance->tablev[i]);
154 g_free (balance->tablev);
155 balance->tablev = NULL;
158 if (balance->tabley) {
159 g_free (balance->tabley);
160 balance->tabley = NULL;
163 channels = balance->channels;
165 GstColorBalanceChannel *channel = channels->data;
167 g_object_unref (channel);
168 channels->data = NULL;
169 channels = g_list_next (channels);
172 if (balance->channels)
173 g_list_free (balance->channels);
175 G_OBJECT_CLASS (parent_class)->dispose (object);
179 gst_videobalance_class_init (gpointer g_class, gpointer class_data)
181 GObjectClass *gobject_class;
182 GstVideofilterClass *videofilter_class;
184 gobject_class = G_OBJECT_CLASS (g_class);
185 videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
187 parent_class = g_type_class_ref (GST_TYPE_VIDEOFILTER);
189 gobject_class->set_property = gst_videobalance_set_property;
190 gobject_class->get_property = gst_videobalance_get_property;
192 g_object_class_install_property (gobject_class, ARG_CONTRAST,
193 g_param_spec_double ("contrast", "Contrast", "contrast",
194 0, 2, 1, G_PARAM_READWRITE));
195 g_object_class_install_property (gobject_class, ARG_BRIGHTNESS,
196 g_param_spec_double ("brightness", "Brightness", "brightness",
197 -1, 1, 0, G_PARAM_READWRITE));
198 g_object_class_install_property (gobject_class, ARG_HUE,
199 g_param_spec_double ("hue", "Hue", "hue", -1, 1, 0, G_PARAM_READWRITE));
200 g_object_class_install_property (gobject_class, ARG_SATURATION,
201 g_param_spec_double ("saturation", "Saturation", "saturation",
202 0, 2, 1, G_PARAM_READWRITE));
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);
289 g_return_if_fail (vb != NULL);
290 g_return_if_fail (GST_IS_VIDEOBALANCE (vb));
291 g_return_if_fail (GST_IS_VIDEOFILTER (vb));
292 g_return_if_fail (channel->label != NULL);
294 if (!g_ascii_strcasecmp (channel->label, "HUE")) {
295 vb->hue = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
296 } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
297 vb->saturation = (value + 1000.0) * 2.0 / 2000.0;
298 } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
299 vb->brightness = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
300 } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
301 vb->contrast = (value + 1000.0) * 2.0 / 2000.0;
304 gst_videobalance_update_properties (vb);
308 gst_videobalance_colorbalance_get_value (GstColorBalance * balance,
309 GstColorBalanceChannel * channel)
311 GstVideobalance *vb = GST_VIDEOBALANCE (balance);
314 g_return_val_if_fail (vb != NULL, 0);
315 g_return_val_if_fail (GST_IS_VIDEOBALANCE (vb), 0);
316 g_return_val_if_fail (channel->label != NULL, 0);
318 if (!g_ascii_strcasecmp (channel->label, "HUE")) {
319 value = (vb->hue + 1) * 2000.0 / 2.0 - 1000.0;
320 } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
321 value = vb->saturation * 2000.0 / 2.0 - 1000.0;
322 } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
323 value = (vb->brightness + 1) * 2000.0 / 2.0 - 1000.0;
324 } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
325 value = vb->contrast * 2000.0 / 2.0 - 1000.0;
332 gst_videobalance_colorbalance_init (GstColorBalanceClass * iface)
334 GST_COLOR_BALANCE_TYPE (iface) = GST_COLOR_BALANCE_SOFTWARE;
335 iface->list_channels = gst_videobalance_colorbalance_list_channels;
336 iface->set_value = gst_videobalance_colorbalance_set_value;
337 iface->get_value = gst_videobalance_colorbalance_get_value;
341 gst_videobalance_update_properties (GstVideobalance * videobalance)
343 GstVideofilter *vf = GST_VIDEOFILTER (videobalance);
345 videobalance->needupdate = TRUE;
347 if (videobalance->contrast == 1.0 &&
348 videobalance->brightness == 0.0 &&
349 videobalance->hue == 0.0 && videobalance->saturation == 1.0) {
352 vf->passthru = FALSE;
357 gst_videobalance_set_property (GObject * object, guint prop_id,
358 const GValue * value, GParamSpec * pspec)
360 GstVideobalance *src;
362 g_return_if_fail (GST_IS_VIDEOBALANCE (object));
363 src = GST_VIDEOBALANCE (object);
365 GST_DEBUG ("gst_videobalance_set_property");
368 src->contrast = g_value_get_double (value);
371 src->brightness = g_value_get_double (value);
374 src->hue = g_value_get_double (value);
377 src->saturation = g_value_get_double (value);
383 gst_videobalance_update_properties (src);
387 gst_videobalance_get_property (GObject * object, guint prop_id, GValue * value,
390 GstVideobalance *src;
392 g_return_if_fail (GST_IS_VIDEOBALANCE (object));
393 src = GST_VIDEOBALANCE (object);
397 g_value_set_double (value, src->contrast);
400 g_value_set_double (value, src->brightness);
403 g_value_set_double (value, src->hue);
406 g_value_set_double (value, src->saturation);
409 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
415 plugin_init (GstPlugin * plugin)
417 if (!gst_library_load ("gstvideofilter"))
420 return gst_element_register (plugin, "videobalance", GST_RANK_NONE,
421 GST_TYPE_VIDEOBALANCE);
424 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
427 "Changes hue, saturation, brightness etc. on video images",
428 plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
431 gst_videobalance_setup (GstVideofilter * videofilter)
433 GstVideobalance *videobalance;
435 g_return_if_fail (GST_IS_VIDEOBALANCE (videofilter));
436 videobalance = GST_VIDEOBALANCE (videofilter);
438 /* if any setup needs to be done, do it here */
443 * look-up tables (LUT).
447 gst_videobalance_update_tables_planar411 (GstVideobalance * vb)
450 gdouble y, u, v, hue_cos, hue_sin;
453 for (i = 0; i < 256; i++) {
454 y = 16 + ((i - 16) * vb->contrast + vb->brightness * 255);
459 vb->tabley[i] = rint (y);
462 /* FIXME this is a bogus transformation for hue, but you get
464 hue_cos = cos (M_PI * vb->hue);
465 hue_sin = sin (M_PI * vb->hue);
467 /* U/V lookup tables are 2D, since we need both U/V for each table
469 for (i = -128; i < 128; i++) {
470 for (j = -128; j < 128; j++) {
471 u = 128 + ((i * hue_cos + j * hue_sin) * vb->saturation);
472 v = 128 + ((-i * hue_sin + j * hue_cos) * vb->saturation);
481 vb->tableu[i + 128][j + 128] = rint (u);
482 vb->tablev[i + 128][j + 128] = rint (v);
489 oil_tablelookup_u8 (guint8 * dest, int dstr, guint8 * src, int sstr,
490 guint8 * table, int tstr, int n)
494 for (i = 0; i < n; i++) {
495 *dest = table[*src * tstr];
503 gst_videobalance_planar411 (GstVideofilter * videofilter, void *dest, void *src)
505 GstVideobalance *videobalance;
510 g_return_if_fail (GST_IS_VIDEOBALANCE (videofilter));
511 videobalance = GST_VIDEOBALANCE (videofilter);
513 if (videobalance->needupdate) {
514 gst_videobalance_update_tables_planar411 (videobalance);
515 videobalance->needupdate = FALSE;
518 width = videofilter->from_width;
519 height = videofilter->from_height;
522 guint8 *cdest = dest;
525 for (y = 0; y < height; y++) {
526 oil_tablelookup_u8 (cdest + y * width, 1, csrc + y * width, 1,
527 videobalance->tabley, 1, width);
534 guint8 *udest, *vdest;
536 usrc = src + width * height;
537 udest = dest + width * height;
538 vsrc = src + width * height + (width / 2) * (height / 2);
539 vdest = dest + width * height + (width / 2) * (height / 2);
541 for (y = 0; y < height / 2; y++) {
542 for (x = 0; x < width / 2; x++) {
543 u1 = usrc[y * (width / 2) + x];
544 v1 = vsrc[y * (width / 2) + x];
545 udest[y * (width / 2) + x] = videobalance->tableu[u1][v1];
546 vdest[y * (width / 2) + x] = videobalance->tablev[u1][v1];