/* GStreamer * Copyright (C) <1999> Erik Walthinsen * <2001> Wim Taymans * <2011> Stefan Sauer * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "gstsmooth.h" #include /* Smooth args */ enum { PROP_0, PROP_ACTIVE, PROP_TOLERANCE, PROP_FILTER_SIZE, PROP_LUMA_ONLY }; static GstStaticPadTemplate gst_smooth_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420") ) ); static GstStaticPadTemplate gst_smooth_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420") ) ); static gboolean gst_smooth_set_info (GstVideoFilter * filter, GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info); static GstFlowReturn gst_smooth_transform_frame (GstVideoFilter * vfilter, GstVideoFrame * in_frame, GstVideoFrame * out_frame); static void gst_smooth_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_smooth_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); G_DEFINE_TYPE (GstSmooth, gst_smooth, GST_TYPE_VIDEO_FILTER); static void gst_smooth_class_init (GstSmoothClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstElementClass *gstelement_class = (GstElementClass *) klass; GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass; gobject_class->set_property = gst_smooth_set_property; gobject_class->get_property = gst_smooth_get_property; g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ACTIVE, g_param_spec_boolean ("active", "active", "process video", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TOLERANCE, g_param_spec_int ("tolerance", "tolerance", "contrast tolerance for smoothing", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILTER_SIZE, g_param_spec_int ("filter-size", "filter-size", "size of media filter", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LUMA_ONLY, g_param_spec_boolean ("luma-only", "luma-only", "only filter luma part", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_add_pad_template (gstelement_class, gst_static_pad_template_get (&gst_smooth_sink_template)); gst_element_class_add_pad_template (gstelement_class, gst_static_pad_template_get (&gst_smooth_src_template)); gst_element_class_set_static_metadata (gstelement_class, "Smooth effect", "Filter/Effect/Video", "Apply a smooth filter to an image", "Wim Taymans "); vfilter_class->transform_frame = GST_DEBUG_FUNCPTR (gst_smooth_transform_frame); vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_smooth_set_info); } static gboolean gst_smooth_set_info (GstVideoFilter * filter, GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info) { GstSmooth *smooth; smooth = GST_SMOOTH (filter); smooth->width = GST_VIDEO_INFO_WIDTH (in_info); smooth->height = GST_VIDEO_INFO_HEIGHT (in_info); return TRUE; } static void gst_smooth_init (GstSmooth * smooth) { smooth->active = TRUE; smooth->tolerance = 8; smooth->filtersize = 3; smooth->luma_only = TRUE; } static void smooth_filter (guchar * dest, guchar * src, gint width, gint height, gint stride, gint dstride, gint tolerance, gint filtersize) { gint refval, aktval, upperval, lowerval, numvalues, sum; gint x, y, fx, fy, fy1, fy2, fx1, fx2; guchar *srcp = src, *destp = dest; fy1 = 0; fy2 = MIN (filtersize + 1, height) * stride; for (y = 0; y < height; y++) { if (y > (filtersize + 1)) fy1 += stride; if (y < height - (filtersize + 1)) fy2 += stride; for (x = 0; x < width; x++) { refval = *src; upperval = refval + tolerance; lowerval = refval - tolerance; numvalues = 1; sum = refval; fx1 = MAX (x - filtersize, 0) + fy1; fx2 = MIN (x + filtersize + 1, width) + fy1; for (fy = fy1; fy < fy2; fy += stride) { for (fx = fx1; fx < fx2; fx++) { aktval = srcp[fx]; if ((lowerval - aktval) * (upperval - aktval) < 0) { numvalues++; sum += aktval; } } /*for fx */ fx1 += stride; fx2 += stride; } /*for fy */ src++; *dest++ = sum / numvalues; } src = srcp + stride * y; dest = destp + dstride * y; } } static GstFlowReturn gst_smooth_transform_frame (GstVideoFilter * vfilter, GstVideoFrame * in_frame, GstVideoFrame * out_frame) { GstSmooth *smooth; smooth = GST_SMOOTH (vfilter); if (!smooth->active) { gst_video_frame_copy (out_frame, in_frame); return GST_FLOW_OK; } smooth_filter (GST_VIDEO_FRAME_COMP_DATA (out_frame, 0), GST_VIDEO_FRAME_COMP_DATA (in_frame, 0), GST_VIDEO_FRAME_COMP_WIDTH (in_frame, 0), GST_VIDEO_FRAME_COMP_HEIGHT (in_frame, 0), GST_VIDEO_FRAME_COMP_STRIDE (in_frame, 0), GST_VIDEO_FRAME_COMP_STRIDE (out_frame, 0), smooth->tolerance, smooth->filtersize); if (!smooth->luma_only) { smooth_filter (GST_VIDEO_FRAME_COMP_DATA (out_frame, 1), GST_VIDEO_FRAME_COMP_DATA (in_frame, 1), GST_VIDEO_FRAME_COMP_WIDTH (in_frame, 1), GST_VIDEO_FRAME_COMP_HEIGHT (in_frame, 1), GST_VIDEO_FRAME_COMP_STRIDE (in_frame, 1), GST_VIDEO_FRAME_COMP_STRIDE (out_frame, 1), smooth->tolerance, smooth->filtersize); smooth_filter (GST_VIDEO_FRAME_COMP_DATA (out_frame, 2), GST_VIDEO_FRAME_COMP_DATA (in_frame, 2), GST_VIDEO_FRAME_COMP_WIDTH (in_frame, 2), GST_VIDEO_FRAME_COMP_HEIGHT (in_frame, 2), GST_VIDEO_FRAME_COMP_STRIDE (in_frame, 2), GST_VIDEO_FRAME_COMP_STRIDE (out_frame, 2), smooth->tolerance, smooth->filtersize); } else { gst_video_frame_copy_plane (out_frame, in_frame, 1); gst_video_frame_copy_plane (out_frame, in_frame, 2); } return GST_FLOW_OK; } static void gst_smooth_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstSmooth *smooth; g_return_if_fail (GST_IS_SMOOTH (object)); smooth = GST_SMOOTH (object); switch (prop_id) { case PROP_ACTIVE: smooth->active = g_value_get_boolean (value); break; case PROP_TOLERANCE: smooth->tolerance = g_value_get_int (value); break; case PROP_FILTER_SIZE: smooth->filtersize = g_value_get_int (value); break; case PROP_LUMA_ONLY: smooth->luma_only = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_smooth_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstSmooth *smooth; g_return_if_fail (GST_IS_SMOOTH (object)); smooth = GST_SMOOTH (object); switch (prop_id) { case PROP_ACTIVE: g_value_set_boolean (value, smooth->active); break; case PROP_TOLERANCE: g_value_set_int (value, smooth->tolerance); break; case PROP_FILTER_SIZE: g_value_set_int (value, smooth->filtersize); break; case PROP_LUMA_ONLY: g_value_set_boolean (value, smooth->luma_only); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "smooth", GST_RANK_NONE, GST_TYPE_SMOOTH); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, smooth, "Apply a smooth filter to an image", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)