2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David Schleef <ds@schleef.org>
4 * Copyright (C) <2010> Sebastian Dröge <sebastian.droege@collabora.co.uk>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
23 * This file was (probably) generated from gstvideobalance.c,
24 * gstvideobalance.c,v 1.7 2003/11/08 02:48:59 dschleef Exp
28 * SECTION:element-videobalance
30 * Adjusts brightness, contrast, hue, saturation on a video stream.
33 * <title>Example launch line</title>
35 * gst-launch-1.0 videotestsrc ! videobalance saturation=0.0 ! videoconvert ! ximagesink
36 * ]| This pipeline converts the image to black and white by setting the
40 * Last reviewed on 2010-04-18 (0.10.22)
47 #include <gst/math-compat.h>
49 #include "gstvideobalance.h"
52 #include <gst/video/colorbalance.h>
54 GST_DEBUG_CATEGORY_STATIC (videobalance_debug);
55 #define GST_CAT_DEFAULT videobalance_debug
57 /* GstVideoBalance properties */
58 #define DEFAULT_PROP_CONTRAST 1.0
59 #define DEFAULT_PROP_BRIGHTNESS 0.0
60 #define DEFAULT_PROP_HUE 0.0
61 #define DEFAULT_PROP_SATURATION 1.0
72 static GstStaticPadTemplate gst_video_balance_src_template =
73 GST_STATIC_PAD_TEMPLATE ("src",
76 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, "
77 "ARGB, BGRA, ABGR, RGBA, Y444, xRGB, RGBx, "
78 "xBGR, BGRx, RGB, BGR, Y42B, YUY2, UYVY, YVYU, "
79 "I420, YV12, IYUV, Y41B, NV12, NV21 }"))
82 static GstStaticPadTemplate gst_video_balance_sink_template =
83 GST_STATIC_PAD_TEMPLATE ("sink",
86 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, "
87 "ARGB, BGRA, ABGR, RGBA, Y444, xRGB, RGBx, "
88 "xBGR, BGRx, RGB, BGR, Y42B, YUY2, UYVY, YVYU, "
89 "I420, YV12, IYUV, Y41B, NV12, NV21 }"))
92 static void gst_video_balance_colorbalance_init (GstColorBalanceInterface *
95 static void gst_video_balance_set_property (GObject * object, guint prop_id,
96 const GValue * value, GParamSpec * pspec);
97 static void gst_video_balance_get_property (GObject * object, guint prop_id,
98 GValue * value, GParamSpec * pspec);
100 #define gst_video_balance_parent_class parent_class
101 G_DEFINE_TYPE_WITH_CODE (GstVideoBalance, gst_video_balance,
102 GST_TYPE_VIDEO_FILTER,
103 G_IMPLEMENT_INTERFACE (GST_TYPE_COLOR_BALANCE,
104 gst_video_balance_colorbalance_init));
107 * look-up tables (LUT).
110 gst_video_balance_update_tables (GstVideoBalance * vb)
113 gdouble y, u, v, hue_cos, hue_sin;
116 for (i = 0; i < 256; i++) {
117 y = 16 + ((i - 16) * vb->contrast + vb->brightness * 255);
122 vb->tabley[i] = rint (y);
125 hue_cos = cos (G_PI * vb->hue);
126 hue_sin = sin (G_PI * vb->hue);
128 /* U/V lookup tables are 2D, since we need both U/V for each table
130 for (i = -128; i < 128; i++) {
131 for (j = -128; j < 128; j++) {
132 u = 128 + ((i * hue_cos + j * hue_sin) * vb->saturation);
133 v = 128 + ((-i * hue_sin + j * hue_cos) * vb->saturation);
142 vb->tableu[i + 128][j + 128] = rint (u);
143 vb->tablev[i + 128][j + 128] = rint (v);
149 gst_video_balance_is_passthrough (GstVideoBalance * videobalance)
151 return videobalance->contrast == 1.0 &&
152 videobalance->brightness == 0.0 &&
153 videobalance->hue == 0.0 && videobalance->saturation == 1.0;
157 gst_video_balance_update_properties (GstVideoBalance * videobalance)
159 gboolean passthrough;
160 GstBaseTransform *base = GST_BASE_TRANSFORM (videobalance);
162 GST_OBJECT_LOCK (videobalance);
163 passthrough = gst_video_balance_is_passthrough (videobalance);
165 gst_video_balance_update_tables (videobalance);
166 GST_OBJECT_UNLOCK (videobalance);
168 gst_base_transform_set_passthrough (base, passthrough);
172 gst_video_balance_planar_yuv (GstVideoBalance * videobalance,
173 GstVideoFrame * frame)
177 guint8 *udata, *vdata;
178 gint ystride, ustride, vstride;
180 gint width2, height2;
181 guint8 *tabley = videobalance->tabley;
182 guint8 **tableu = videobalance->tableu;
183 guint8 **tablev = videobalance->tablev;
185 width = GST_VIDEO_FRAME_WIDTH (frame);
186 height = GST_VIDEO_FRAME_HEIGHT (frame);
188 ydata = GST_VIDEO_FRAME_PLANE_DATA (frame, 0);
189 ystride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0);
191 for (y = 0; y < height; y++) {
194 yptr = ydata + y * ystride;
195 for (x = 0; x < width; x++) {
196 *yptr = tabley[*yptr];
201 width2 = GST_VIDEO_FRAME_COMP_WIDTH (frame, 1);
202 height2 = GST_VIDEO_FRAME_COMP_HEIGHT (frame, 1);
204 udata = GST_VIDEO_FRAME_PLANE_DATA (frame, 1);
205 vdata = GST_VIDEO_FRAME_PLANE_DATA (frame, 2);
206 ustride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 1);
207 vstride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 2);
209 for (y = 0; y < height2; y++) {
213 uptr = udata + y * ustride;
214 vptr = vdata + y * vstride;
216 for (x = 0; x < width2; x++) {
220 *uptr++ = tableu[u1][v1];
221 *vptr++ = tablev[u1][v1];
227 gst_video_balance_semiplanar_yuv (GstVideoBalance * videobalance,
228 GstVideoFrame * frame)
233 gint ystride, uvstride;
235 gint width2, height2;
236 guint8 *tabley = videobalance->tabley;
237 guint8 **tableu = videobalance->tableu;
238 guint8 **tablev = videobalance->tablev;
241 width = GST_VIDEO_FRAME_WIDTH (frame);
242 height = GST_VIDEO_FRAME_HEIGHT (frame);
244 ydata = GST_VIDEO_FRAME_PLANE_DATA (frame, 0);
245 ystride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0);
247 for (y = 0; y < height; y++) {
250 yptr = ydata + y * ystride;
251 for (x = 0; x < width; x++) {
252 *yptr = tabley[*yptr];
257 width2 = GST_VIDEO_FRAME_COMP_WIDTH (frame, 1);
258 height2 = GST_VIDEO_FRAME_COMP_HEIGHT (frame, 1);
260 uvdata = GST_VIDEO_FRAME_PLANE_DATA (frame, 1);
261 uvstride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 1);
263 upos = GST_VIDEO_INFO_FORMAT (&frame->info) == GST_VIDEO_FORMAT_NV12 ? 0 : 1;
264 vpos = GST_VIDEO_INFO_FORMAT (&frame->info) == GST_VIDEO_FORMAT_NV12 ? 1 : 0;
266 for (y = 0; y < height2; y++) {
270 uvptr = uvdata + y * uvstride;
272 for (x = 0; x < width2; x++) {
276 uvptr[upos] = tableu[u1][v1];
277 uvptr[vpos] = tablev[u1][v1];
284 gst_video_balance_packed_yuv (GstVideoBalance * videobalance,
285 GstVideoFrame * frame)
288 guint8 *ydata, *udata, *vdata;
289 gint yoff, uoff, voff;
291 gint width2, height2;
292 guint8 *tabley = videobalance->tabley;
293 guint8 **tableu = videobalance->tableu;
294 guint8 **tablev = videobalance->tablev;
296 width = GST_VIDEO_FRAME_WIDTH (frame);
297 height = GST_VIDEO_FRAME_HEIGHT (frame);
299 stride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0);
300 ydata = GST_VIDEO_FRAME_COMP_DATA (frame, 0);
301 yoff = GST_VIDEO_FRAME_COMP_PSTRIDE (frame, 0);
303 for (y = 0; y < height; y++) {
306 yptr = ydata + y * stride;
307 for (x = 0; x < width; x++) {
308 *yptr = tabley[*yptr];
313 width2 = GST_VIDEO_FRAME_COMP_WIDTH (frame, 1);
314 height2 = GST_VIDEO_FRAME_COMP_HEIGHT (frame, 1);
316 udata = GST_VIDEO_FRAME_COMP_DATA (frame, 1);
317 vdata = GST_VIDEO_FRAME_COMP_DATA (frame, 2);
318 uoff = GST_VIDEO_FRAME_COMP_PSTRIDE (frame, 1);
319 voff = GST_VIDEO_FRAME_COMP_PSTRIDE (frame, 2);
321 for (y = 0; y < height2; y++) {
325 uptr = udata + y * stride;
326 vptr = vdata + y * stride;
328 for (x = 0; x < width2; x++) {
332 *uptr = tableu[u1][v1];
333 *vptr = tablev[u1][v1];
341 static const int cog_ycbcr_to_rgb_matrix_8bit_sdtv[] = {
343 298, -100, -208, 34707,
347 static const gint cog_rgb_to_ycbcr_matrix_8bit_sdtv[] = {
349 -38, -74, 112, 32768,
350 112, -94, -18, 32768,
353 #define APPLY_MATRIX(m,o,v1,v2,v3) ((m[o*4] * v1 + m[o*4+1] * v2 + m[o*4+2] * v3 + m[o*4+3]) >> 8)
356 gst_video_balance_packed_rgb (GstVideoBalance * videobalance,
357 GstVideoFrame * frame)
360 gint width, stride, row_wrap;
367 guint8 *tabley = videobalance->tabley;
368 guint8 **tableu = videobalance->tableu;
369 guint8 **tablev = videobalance->tablev;
371 width = GST_VIDEO_FRAME_WIDTH (frame);
372 height = GST_VIDEO_FRAME_HEIGHT (frame);
374 offsets[0] = GST_VIDEO_FRAME_COMP_OFFSET (frame, 0);
375 offsets[1] = GST_VIDEO_FRAME_COMP_OFFSET (frame, 1);
376 offsets[2] = GST_VIDEO_FRAME_COMP_OFFSET (frame, 2);
378 data = GST_VIDEO_FRAME_PLANE_DATA (frame, 0);
379 stride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0);
381 pixel_stride = GST_VIDEO_FRAME_COMP_PSTRIDE (frame, 0);
382 row_wrap = stride - pixel_stride * width;
384 for (i = 0; i < height; i++) {
385 for (j = 0; j < width; j++) {
386 r = data[offsets[0]];
387 g = data[offsets[1]];
388 b = data[offsets[2]];
390 y = APPLY_MATRIX (cog_rgb_to_ycbcr_matrix_8bit_sdtv, 0, r, g, b);
391 u_tmp = APPLY_MATRIX (cog_rgb_to_ycbcr_matrix_8bit_sdtv, 1, r, g, b);
392 v_tmp = APPLY_MATRIX (cog_rgb_to_ycbcr_matrix_8bit_sdtv, 2, r, g, b);
394 y = CLAMP (y, 0, 255);
395 u_tmp = CLAMP (u_tmp, 0, 255);
396 v_tmp = CLAMP (v_tmp, 0, 255);
399 u = tableu[u_tmp][v_tmp];
400 v = tablev[u_tmp][v_tmp];
402 r = APPLY_MATRIX (cog_ycbcr_to_rgb_matrix_8bit_sdtv, 0, y, u, v);
403 g = APPLY_MATRIX (cog_ycbcr_to_rgb_matrix_8bit_sdtv, 1, y, u, v);
404 b = APPLY_MATRIX (cog_ycbcr_to_rgb_matrix_8bit_sdtv, 2, y, u, v);
406 data[offsets[0]] = CLAMP (r, 0, 255);
407 data[offsets[1]] = CLAMP (g, 0, 255);
408 data[offsets[2]] = CLAMP (b, 0, 255);
409 data += pixel_stride;
415 /* get notified of caps and plug in the correct process function */
417 gst_video_balance_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
418 GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
420 GstVideoBalance *videobalance = GST_VIDEO_BALANCE (vfilter);
422 GST_DEBUG_OBJECT (videobalance,
423 "in %" GST_PTR_FORMAT " out %" GST_PTR_FORMAT, incaps, outcaps);
425 videobalance->process = NULL;
427 switch (GST_VIDEO_INFO_FORMAT (in_info)) {
428 case GST_VIDEO_FORMAT_I420:
429 case GST_VIDEO_FORMAT_YV12:
430 case GST_VIDEO_FORMAT_Y41B:
431 case GST_VIDEO_FORMAT_Y42B:
432 case GST_VIDEO_FORMAT_Y444:
433 videobalance->process = gst_video_balance_planar_yuv;
435 case GST_VIDEO_FORMAT_YUY2:
436 case GST_VIDEO_FORMAT_UYVY:
437 case GST_VIDEO_FORMAT_AYUV:
438 case GST_VIDEO_FORMAT_YVYU:
439 videobalance->process = gst_video_balance_packed_yuv;
441 case GST_VIDEO_FORMAT_NV12:
442 case GST_VIDEO_FORMAT_NV21:
443 videobalance->process = gst_video_balance_semiplanar_yuv;
445 case GST_VIDEO_FORMAT_ARGB:
446 case GST_VIDEO_FORMAT_ABGR:
447 case GST_VIDEO_FORMAT_RGBA:
448 case GST_VIDEO_FORMAT_BGRA:
449 case GST_VIDEO_FORMAT_xRGB:
450 case GST_VIDEO_FORMAT_xBGR:
451 case GST_VIDEO_FORMAT_RGBx:
452 case GST_VIDEO_FORMAT_BGRx:
453 case GST_VIDEO_FORMAT_RGB:
454 case GST_VIDEO_FORMAT_BGR:
455 videobalance->process = gst_video_balance_packed_rgb;
467 GST_ERROR_OBJECT (videobalance, "unknown format %" GST_PTR_FORMAT, incaps);
473 gst_video_balance_before_transform (GstBaseTransform * base, GstBuffer * buf)
475 GstVideoBalance *balance = GST_VIDEO_BALANCE (base);
476 GstClockTime timestamp, stream_time;
478 timestamp = GST_BUFFER_TIMESTAMP (buf);
480 gst_segment_to_stream_time (&base->segment, GST_FORMAT_TIME, timestamp);
482 GST_DEBUG_OBJECT (balance, "sync to %" GST_TIME_FORMAT,
483 GST_TIME_ARGS (timestamp));
485 if (GST_CLOCK_TIME_IS_VALID (stream_time))
486 gst_object_sync_values (GST_OBJECT (balance), stream_time);
490 gst_video_balance_transform_frame_ip (GstVideoFilter * vfilter,
491 GstVideoFrame * frame)
493 GstVideoBalance *videobalance = GST_VIDEO_BALANCE (vfilter);
495 if (!videobalance->process)
498 GST_OBJECT_LOCK (videobalance);
499 videobalance->process (videobalance, frame);
500 GST_OBJECT_UNLOCK (videobalance);
507 GST_ERROR_OBJECT (videobalance, "Not negotiated yet");
508 return GST_FLOW_NOT_NEGOTIATED;
513 gst_video_balance_finalize (GObject * object)
515 GList *channels = NULL;
516 GstVideoBalance *balance = GST_VIDEO_BALANCE (object);
518 g_free (balance->tableu[0]);
520 channels = balance->channels;
522 GstColorBalanceChannel *channel = channels->data;
524 g_object_unref (channel);
525 channels->data = NULL;
526 channels = g_list_next (channels);
529 if (balance->channels)
530 g_list_free (balance->channels);
532 G_OBJECT_CLASS (parent_class)->finalize (object);
536 gst_video_balance_class_init (GstVideoBalanceClass * klass)
538 GObjectClass *gobject_class = (GObjectClass *) klass;
539 GstElementClass *gstelement_class = (GstElementClass *) klass;
540 GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
541 GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
543 GST_DEBUG_CATEGORY_INIT (videobalance_debug, "videobalance", 0,
546 gobject_class->finalize = gst_video_balance_finalize;
547 gobject_class->set_property = gst_video_balance_set_property;
548 gobject_class->get_property = gst_video_balance_get_property;
550 g_object_class_install_property (gobject_class, PROP_CONTRAST,
551 g_param_spec_double ("contrast", "Contrast", "contrast",
552 0.0, 2.0, DEFAULT_PROP_CONTRAST,
553 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
554 g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
555 g_param_spec_double ("brightness", "Brightness", "brightness", -1.0, 1.0,
556 DEFAULT_PROP_BRIGHTNESS,
557 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
558 g_object_class_install_property (gobject_class, PROP_HUE,
559 g_param_spec_double ("hue", "Hue", "hue", -1.0, 1.0, DEFAULT_PROP_HUE,
560 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
561 g_object_class_install_property (gobject_class, PROP_SATURATION,
562 g_param_spec_double ("saturation", "Saturation", "saturation", 0.0, 2.0,
563 DEFAULT_PROP_SATURATION,
564 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
566 gst_element_class_set_static_metadata (gstelement_class, "Video balance",
567 "Filter/Effect/Video",
568 "Adjusts brightness, contrast, hue, saturation on a video stream",
569 "David Schleef <ds@schleef.org>");
571 gst_element_class_add_pad_template (gstelement_class,
572 gst_static_pad_template_get (&gst_video_balance_sink_template));
573 gst_element_class_add_pad_template (gstelement_class,
574 gst_static_pad_template_get (&gst_video_balance_src_template));
576 trans_class->before_transform =
577 GST_DEBUG_FUNCPTR (gst_video_balance_before_transform);
578 trans_class->transform_ip_on_passthrough = FALSE;
580 vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_balance_set_info);
581 vfilter_class->transform_frame_ip =
582 GST_DEBUG_FUNCPTR (gst_video_balance_transform_frame_ip);
586 gst_video_balance_init (GstVideoBalance * videobalance)
588 const gchar *channels[4] = { "HUE", "SATURATION",
589 "BRIGHTNESS", "CONTRAST"
593 /* Initialize propertiews */
594 videobalance->contrast = DEFAULT_PROP_CONTRAST;
595 videobalance->brightness = DEFAULT_PROP_BRIGHTNESS;
596 videobalance->hue = DEFAULT_PROP_HUE;
597 videobalance->saturation = DEFAULT_PROP_SATURATION;
599 videobalance->tableu[0] = g_new (guint8, 256 * 256 * 2);
600 for (i = 0; i < 256; i++) {
601 videobalance->tableu[i] =
602 videobalance->tableu[0] + i * 256 * sizeof (guint8);
603 videobalance->tablev[i] =
604 videobalance->tableu[0] + 256 * 256 * sizeof (guint8) +
605 i * 256 * sizeof (guint8);
608 gst_video_balance_update_properties (videobalance);
610 /* Generate the channels list */
611 for (i = 0; i < G_N_ELEMENTS (channels); i++) {
612 GstColorBalanceChannel *channel;
614 channel = g_object_new (GST_TYPE_COLOR_BALANCE_CHANNEL, NULL);
615 channel->label = g_strdup (channels[i]);
616 channel->min_value = -1000;
617 channel->max_value = 1000;
619 videobalance->channels = g_list_append (videobalance->channels, channel);
624 gst_video_balance_colorbalance_list_channels (GstColorBalance * balance)
626 GstVideoBalance *videobalance = GST_VIDEO_BALANCE (balance);
628 g_return_val_if_fail (videobalance != NULL, NULL);
629 g_return_val_if_fail (GST_IS_VIDEO_BALANCE (videobalance), NULL);
631 return videobalance->channels;
635 gst_video_balance_colorbalance_set_value (GstColorBalance * balance,
636 GstColorBalanceChannel * channel, gint value)
638 GstVideoBalance *vb = GST_VIDEO_BALANCE (balance);
640 gboolean changed = FALSE;
642 g_return_if_fail (vb != NULL);
643 g_return_if_fail (GST_IS_VIDEO_BALANCE (vb));
644 g_return_if_fail (GST_IS_VIDEO_FILTER (vb));
645 g_return_if_fail (channel->label != NULL);
647 GST_OBJECT_LOCK (vb);
648 if (!g_ascii_strcasecmp (channel->label, "HUE")) {
649 new_val = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
650 changed = new_val != vb->hue;
652 } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
653 new_val = (value + 1000.0) * 2.0 / 2000.0;
654 changed = new_val != vb->saturation;
655 vb->saturation = new_val;
656 } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
657 new_val = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
658 changed = new_val != vb->brightness;
659 vb->brightness = new_val;
660 } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
661 new_val = (value + 1000.0) * 2.0 / 2000.0;
662 changed = new_val != vb->contrast;
663 vb->contrast = new_val;
665 GST_OBJECT_UNLOCK (vb);
668 gst_video_balance_update_properties (vb);
671 gst_color_balance_value_changed (balance, channel,
672 gst_color_balance_get_value (balance, channel));
677 gst_video_balance_colorbalance_get_value (GstColorBalance * balance,
678 GstColorBalanceChannel * channel)
680 GstVideoBalance *vb = GST_VIDEO_BALANCE (balance);
683 g_return_val_if_fail (vb != NULL, 0);
684 g_return_val_if_fail (GST_IS_VIDEO_BALANCE (vb), 0);
685 g_return_val_if_fail (channel->label != NULL, 0);
687 if (!g_ascii_strcasecmp (channel->label, "HUE")) {
688 value = (vb->hue + 1) * 2000.0 / 2.0 - 1000.0;
689 } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
690 value = vb->saturation * 2000.0 / 2.0 - 1000.0;
691 } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
692 value = (vb->brightness + 1) * 2000.0 / 2.0 - 1000.0;
693 } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
694 value = vb->contrast * 2000.0 / 2.0 - 1000.0;
700 static GstColorBalanceType
701 gst_video_balance_colorbalance_get_balance_type (GstColorBalance * balance)
703 return GST_COLOR_BALANCE_SOFTWARE;
707 gst_video_balance_colorbalance_init (GstColorBalanceInterface * iface)
709 iface->list_channels = gst_video_balance_colorbalance_list_channels;
710 iface->set_value = gst_video_balance_colorbalance_set_value;
711 iface->get_value = gst_video_balance_colorbalance_get_value;
712 iface->get_balance_type = gst_video_balance_colorbalance_get_balance_type;
715 static GstColorBalanceChannel *
716 gst_video_balance_find_channel (GstVideoBalance * balance, const gchar * label)
720 for (l = balance->channels; l; l = l->next) {
721 GstColorBalanceChannel *channel = l->data;
723 if (g_ascii_strcasecmp (channel->label, label) == 0)
730 gst_video_balance_set_property (GObject * object, guint prop_id,
731 const GValue * value, GParamSpec * pspec)
733 GstVideoBalance *balance = GST_VIDEO_BALANCE (object);
735 const gchar *label = NULL;
737 GST_OBJECT_LOCK (balance);
740 d = g_value_get_double (value);
741 GST_DEBUG_OBJECT (balance, "Changing contrast from %lf to %lf",
742 balance->contrast, d);
743 if (d != balance->contrast)
745 balance->contrast = d;
747 case PROP_BRIGHTNESS:
748 d = g_value_get_double (value);
749 GST_DEBUG_OBJECT (balance, "Changing brightness from %lf to %lf",
750 balance->brightness, d);
751 if (d != balance->brightness)
752 label = "BRIGHTNESS";
753 balance->brightness = d;
756 d = g_value_get_double (value);
757 GST_DEBUG_OBJECT (balance, "Changing hue from %lf to %lf", balance->hue,
759 if (d != balance->hue)
763 case PROP_SATURATION:
764 d = g_value_get_double (value);
765 GST_DEBUG_OBJECT (balance, "Changing saturation from %lf to %lf",
766 balance->saturation, d);
767 if (d != balance->saturation)
768 label = "SATURATION";
769 balance->saturation = d;
772 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
776 GST_OBJECT_UNLOCK (balance);
777 gst_video_balance_update_properties (balance);
780 GstColorBalanceChannel *channel =
781 gst_video_balance_find_channel (balance, label);
782 gst_color_balance_value_changed (GST_COLOR_BALANCE (balance), channel,
783 gst_color_balance_get_value (GST_COLOR_BALANCE (balance), channel));
788 gst_video_balance_get_property (GObject * object, guint prop_id, GValue * value,
791 GstVideoBalance *balance = GST_VIDEO_BALANCE (object);
795 g_value_set_double (value, balance->contrast);
797 case PROP_BRIGHTNESS:
798 g_value_set_double (value, balance->brightness);
801 g_value_set_double (value, balance->hue);
803 case PROP_SATURATION:
804 g_value_set_double (value, balance->saturation);
807 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);