mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1d5f318e0d
Original commit message from CVS: plugins part of license field patch
344 lines
9.1 KiB
C
344 lines
9.1 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include <gstsmooth.h>
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/* elementfactory information */
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static GstElementDetails smooth_details = {
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"Smooth effect",
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"Filter/Video",
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"LGPL",
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"Apply a smooth filter to an image",
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VERSION,
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"Wim Taymans <wim.taymans@chello.be>",
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"(C) 2000",
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};
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/* Smooth signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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ARG_ACTIVE,
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ARG_TOLERANCE,
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ARG_FILTERSIZE,
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ARG_LUM_ONLY
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};
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GST_PAD_TEMPLATE_FACTORY (smooth_src_factory,
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"smooth_src",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420"))
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)
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)
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GST_PAD_TEMPLATE_FACTORY (smooth_sink_factory,
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"sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"smooth_src",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420"))
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)
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)
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static void gst_smooth_class_init (GstSmoothClass *klass);
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static void gst_smooth_init (GstSmooth *smooth);
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static void gst_smooth_chain (GstPad *pad, GstBuffer *buf);
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static void smooth_filter (unsigned char* dest, unsigned char* src,
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int width, int height, int tolerance, int filtersize);
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static void gst_smooth_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_smooth_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_smooth_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_smooth_get_type (void)
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{
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static GType smooth_type = 0;
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if (!smooth_type) {
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static const GTypeInfo smooth_info = {
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sizeof(GstSmoothClass), NULL,
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NULL,
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(GClassInitFunc)gst_smooth_class_init,
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NULL,
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NULL,
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sizeof(GstSmooth),
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0,
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(GInstanceInitFunc)gst_smooth_init,
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};
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smooth_type = g_type_register_static(GST_TYPE_ELEMENT, "GstSmooth", &smooth_info, 0);
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}
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return smooth_type;
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}
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static void
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gst_smooth_class_init (GstSmoothClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass*)klass;
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gstelement_class = (GstElementClass*)klass;
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ACTIVE,
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g_param_spec_boolean("active","active","active",
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TRUE,G_PARAM_READWRITE)); /* CHECKME */
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TOLERANCE,
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g_param_spec_int("tolerance","tolerance","tolerance",
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G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FILTERSIZE,
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g_param_spec_int("filtersize","filtersize","filtersize",
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G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
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gobject_class->set_property = gst_smooth_set_property;
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gobject_class->get_property = gst_smooth_get_property;
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}
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static GstPadConnectReturn
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gst_smooth_sinkconnect (GstPad *pad, GstCaps *caps)
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{
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GstSmooth *filter;
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filter = GST_SMOOTH (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps))
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return GST_PAD_CONNECT_DELAYED;
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gst_caps_get_int (caps, "width", &filter->width);
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gst_caps_get_int (caps, "height", &filter->height);
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return GST_PAD_CONNECT_OK;
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}
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static void
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gst_smooth_init (GstSmooth *smooth)
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{
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smooth->sinkpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (smooth_sink_factory), "sink");
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gst_pad_set_connect_function (smooth->sinkpad, gst_smooth_sinkconnect);
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gst_pad_set_chain_function (smooth->sinkpad, gst_smooth_chain);
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gst_element_add_pad (GST_ELEMENT (smooth), smooth->sinkpad);
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smooth->srcpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (smooth_src_factory), "src");
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gst_element_add_pad (GST_ELEMENT (smooth), smooth->srcpad);
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smooth->active = TRUE;
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smooth->tolerance = 8;
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smooth->filtersize = 3;
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smooth->lum_only = TRUE;
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}
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static void
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smooth_filter (unsigned char* dest, unsigned char* src, int width, int height, int tolerance, int filtersize)
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{
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int refval, aktval, upperval, lowerval, numvalues, sum;
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int x, y, fx, fy, fy1, fy2, fx1, fx2;
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unsigned char *srcp = src;
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fy1 = 0;
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fy2 = MIN(filtersize+1, height) * width;
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for(y = 0; y < height; y++)
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{
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if (y>(filtersize+1)) fy1 += width;
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if (y<height-(filtersize+1)) fy2 += width;
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for(x = 0; x < width; x++)
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{
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refval = *src;
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upperval = refval + tolerance;
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lowerval = refval - tolerance;
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numvalues = 1;
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sum = refval;
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fx1 = MAX(x-filtersize, 0) + fy1;
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fx2 = MIN(x+filtersize+1, width) + fy1;
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for (fy = fy1; fy<fy2; fy+=width)
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{
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for (fx = fx1; fx<fx2; fx++)
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{
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aktval = srcp[fx];
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if ((lowerval-aktval)*(upperval-aktval)<0)
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{
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numvalues ++;
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sum += aktval;
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}
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} /*for fx */
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fx1 += width;
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fx2 += width;
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} /*for fy */
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src++;
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*dest++ = sum/numvalues;
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}
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}
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}
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static void
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gst_smooth_chain (GstPad *pad, GstBuffer *buf)
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{
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GstSmooth *smooth;
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guchar *data;
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gulong size;
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GstBuffer *outbuf;
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gint lumsize, chromsize;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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smooth = GST_SMOOTH (GST_OBJECT_PARENT (pad));
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if (!smooth->active) {
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gst_pad_push(smooth->srcpad,buf);
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return;
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}
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data = GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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GST_DEBUG (0,"smooth: have buffer of %d", GST_BUFFER_SIZE (buf));
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outbuf = gst_buffer_new();
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GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (buf));
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GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (buf);
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lumsize = smooth->width*smooth->height;
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chromsize = lumsize/4;
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smooth_filter (GST_BUFFER_DATA (outbuf), data, smooth->width, smooth->height,
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smooth->tolerance, smooth->filtersize);
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if (!smooth->lum_only) {
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smooth_filter (GST_BUFFER_DATA (outbuf)+lumsize, data+lumsize, smooth->width/2, smooth->height/2,
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smooth->tolerance, smooth->filtersize/2);
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smooth_filter (GST_BUFFER_DATA (outbuf)+lumsize+chromsize, data+lumsize+chromsize, smooth->width/2,
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smooth->height/2, smooth->tolerance, smooth->filtersize/2);
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}
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else {
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memcpy (GST_BUFFER_DATA (outbuf)+lumsize, data+lumsize, chromsize*2);
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}
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
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gst_buffer_unref (buf);
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gst_pad_push (smooth->srcpad, outbuf);
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}
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static void
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gst_smooth_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstSmooth *smooth;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_SMOOTH(object));
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smooth = GST_SMOOTH(object);
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switch (prop_id) {
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case ARG_ACTIVE:
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smooth->active = g_value_get_boolean (value);
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break;
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case ARG_TOLERANCE:
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smooth->tolerance = g_value_get_int (value);
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break;
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case ARG_FILTERSIZE:
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smooth->filtersize = g_value_get_int (value);
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break;
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case ARG_LUM_ONLY:
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smooth->lum_only = g_value_get_boolean (value);
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break;
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default:
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break;
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}
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}
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static void
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gst_smooth_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstSmooth *smooth;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_SMOOTH(object));
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smooth = GST_SMOOTH(object);
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switch (prop_id) {
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case ARG_ACTIVE:
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g_value_set_boolean (value, smooth->active);
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break;
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case ARG_TOLERANCE:
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g_value_set_int (value, smooth->tolerance);
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break;
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case ARG_FILTERSIZE:
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g_value_set_int (value, smooth->filtersize);
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break;
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case ARG_LUM_ONLY:
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g_value_set_boolean (value, smooth->lum_only);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gboolean
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plugin_init (GModule *module, GstPlugin *plugin)
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{
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GstElementFactory *factory;
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factory = gst_element_factory_new("smooth",GST_TYPE_SMOOTH,
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&smooth_details);
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g_return_val_if_fail(factory != NULL, FALSE);
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gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (smooth_sink_factory));
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gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (smooth_src_factory));
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
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return TRUE;
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}
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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"smooth",
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plugin_init
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};
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