| /* GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
| * <2001> Wim Taymans <wim.taymans@chello.be> |
| * <2011> Stefan Sauer <ensonic@user.sf.net> |
| * |
| * 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 <string.h> |
| #include "gstsmooth.h" |
| #include <gst/video/video.h> |
| |
| /* 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 <wim.taymans@chello.be>"); |
| |
| 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) |