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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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videofilters: Add videodiff element
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parent
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commit
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4 changed files with 356 additions and 0 deletions
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@ -5,7 +5,10 @@ plugin_LTLIBRARIES = libgstvideofiltersbad.la
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libgstvideofiltersbad_la_SOURCES = \
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libgstvideofiltersbad_la_SOURCES = \
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gstzebrastripe.c \
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gstzebrastripe.c \
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gstzebrastripe.h \
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gstscenechange.c \
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gstscenechange.c \
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gstvideodiff.c \
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gstvideodiff.h \
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gstvideofiltersbad.c
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gstvideofiltersbad.c
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#nodist_libgstvideofiltersbad_la_SOURCES = $(ORC_NODIST_SOURCES)
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#nodist_libgstvideofiltersbad_la_SOURCES = $(ORC_NODIST_SOURCES)
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libgstvideofiltersbad_la_CFLAGS = \
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libgstvideofiltersbad_la_CFLAGS = \
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292
gst/videofilters/gstvideodiff.c
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292
gst/videofilters/gstvideodiff.c
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@ -0,0 +1,292 @@
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/* GStreamer
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* Copyright (C) 2013 FIXME <fixme@example.com>
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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., 51 Franklin Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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/**
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* SECTION:element-gstvideodiff
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*
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* The videodiff element does FIXME stuff.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -v fakesrc ! videodiff ! FIXME ! fakesink
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* ]|
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* FIXME Describe what the pipeline does.
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideofilter.h>
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#include "gstvideodiff.h"
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GST_DEBUG_CATEGORY_STATIC (gst_video_diff_debug_category);
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#define GST_CAT_DEFAULT gst_video_diff_debug_category
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/* prototypes */
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static void gst_video_diff_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_video_diff_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_video_diff_dispose (GObject * object);
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static void gst_video_diff_finalize (GObject * object);
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static gboolean gst_video_diff_start (GstBaseTransform * trans);
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static gboolean gst_video_diff_stop (GstBaseTransform * trans);
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static gboolean gst_video_diff_set_info (GstVideoFilter * filter,
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GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
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GstVideoInfo * out_info);
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static GstFlowReturn gst_video_diff_transform_frame (GstVideoFilter * filter,
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GstVideoFrame * inframe, GstVideoFrame * outframe);
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enum
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{
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PROP_0
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};
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/* pad templates */
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/* FIXME: add/remove formats you can handle */
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#define VIDEO_SRC_CAPS \
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GST_VIDEO_CAPS_MAKE("{ I420, Y444, Y42B, UYVY, RGBA }")
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/* FIXME: add/remove formats you can handle */
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#define VIDEO_SINK_CAPS \
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GST_VIDEO_CAPS_MAKE("{ I420, Y444, Y42B, UYVY, RGBA }")
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/* class initialization */
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G_DEFINE_TYPE_WITH_CODE (GstVideoDiff, gst_video_diff, GST_TYPE_VIDEO_FILTER,
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GST_DEBUG_CATEGORY_INIT (gst_video_diff_debug_category, "videodiff", 0,
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"debug category for videodiff element"));
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static void
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gst_video_diff_class_init (GstVideoDiffClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseTransformClass *base_transform_class =
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GST_BASE_TRANSFORM_CLASS (klass);
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GstVideoFilterClass *video_filter_class = GST_VIDEO_FILTER_CLASS (klass);
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/* Setting up pads and setting metadata should be moved to
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base_class_init if you intend to subclass this class. */
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gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
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gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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gst_caps_from_string (VIDEO_SRC_CAPS)));
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gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
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gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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gst_caps_from_string (VIDEO_SINK_CAPS)));
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gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass),
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"FIXME Long name", "Generic", "FIXME Description",
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"FIXME <fixme@example.com>");
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gobject_class->set_property = gst_video_diff_set_property;
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gobject_class->get_property = gst_video_diff_get_property;
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gobject_class->dispose = gst_video_diff_dispose;
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gobject_class->finalize = gst_video_diff_finalize;
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base_transform_class->start = GST_DEBUG_FUNCPTR (gst_video_diff_start);
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base_transform_class->stop = GST_DEBUG_FUNCPTR (gst_video_diff_stop);
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video_filter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_diff_set_info);
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video_filter_class->transform_frame =
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GST_DEBUG_FUNCPTR (gst_video_diff_transform_frame);
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}
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static void
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gst_video_diff_init (GstVideoDiff * videodiff)
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{
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videodiff->threshold = 10;
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}
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void
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gst_video_diff_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (object);
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GST_DEBUG_OBJECT (videodiff, "set_property");
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_video_diff_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (object);
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GST_DEBUG_OBJECT (videodiff, "get_property");
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_video_diff_dispose (GObject * object)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (object);
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GST_DEBUG_OBJECT (videodiff, "dispose");
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (gst_video_diff_parent_class)->dispose (object);
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}
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void
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gst_video_diff_finalize (GObject * object)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (object);
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GST_DEBUG_OBJECT (videodiff, "finalize");
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/* clean up object here */
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G_OBJECT_CLASS (gst_video_diff_parent_class)->finalize (object);
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}
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static gboolean
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gst_video_diff_start (GstBaseTransform * trans)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (trans);
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GST_DEBUG_OBJECT (videodiff, "start");
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return TRUE;
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}
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static gboolean
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gst_video_diff_stop (GstBaseTransform * trans)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (trans);
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GST_DEBUG_OBJECT (videodiff, "stop");
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return TRUE;
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}
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static gboolean
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gst_video_diff_set_info (GstVideoFilter * filter, GstCaps * incaps,
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GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (filter);
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GST_DEBUG_OBJECT (videodiff, "set_info");
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return TRUE;
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}
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static GstFlowReturn
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gst_video_diff_transform_frame_ip_planarY (GstVideoDiff * videodiff,
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GstVideoFrame * outframe, GstVideoFrame * inframe, GstVideoFrame * oldframe)
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{
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int width = inframe->info.width;
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int height = inframe->info.height;
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int i, j;
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int threshold = videodiff->threshold;
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int t = videodiff->t;
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for (j = 0; j < height; j++) {
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guint8 *d = (guint8 *) outframe->data[0] + outframe->info.stride[0] * j;
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guint8 *s1 = (guint8 *) oldframe->data[0] + oldframe->info.stride[0] * j;
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guint8 *s2 = (guint8 *) inframe->data[0] + inframe->info.stride[0] * j;
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for (i = 0; i < width; i++) {
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if ((s2[i] < s1[i] - threshold) || (s2[i] > s1[i] + threshold)) {
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if ((i + j + t) & 0x4) {
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d[i] = 16;
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} else {
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d[i] = 240;
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}
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} else {
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d[i] = s2[i];
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}
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}
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}
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for (j = 0; j < GST_VIDEO_FRAME_COMP_HEIGHT (inframe, 1); j++) {
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guint8 *d = (guint8 *) outframe->data[1] + outframe->info.stride[1] * j;
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guint8 *s = (guint8 *) inframe->data[1] + inframe->info.stride[1] * j;
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memcpy (d, s, GST_VIDEO_FRAME_COMP_WIDTH (inframe, 1));
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}
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for (j = 0; j < GST_VIDEO_FRAME_COMP_HEIGHT (inframe, 2); j++) {
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guint8 *d = (guint8 *) outframe->data[2] + outframe->info.stride[2] * j;
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guint8 *s = (guint8 *) inframe->data[2] + inframe->info.stride[2] * j;
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memcpy (d, s, GST_VIDEO_FRAME_COMP_WIDTH (inframe, 2));
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}
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_video_diff_transform_frame (GstVideoFilter * filter,
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GstVideoFrame * inframe, GstVideoFrame * outframe)
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{
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GstVideoDiff *videodiff = GST_VIDEO_DIFF (filter);
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GST_DEBUG_OBJECT (videodiff, "transform_frame_ip");
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if (videodiff->previous_buffer) {
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GstVideoFrame oldframe;
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gst_video_frame_map (&oldframe, &videodiff->oldinfo,
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videodiff->previous_buffer, GST_MAP_READ);
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switch (inframe->info.finfo->format) {
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case GST_VIDEO_FORMAT_I420:
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case GST_VIDEO_FORMAT_Y41B:
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case GST_VIDEO_FORMAT_Y444:
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case GST_VIDEO_FORMAT_Y42B:
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gst_video_diff_transform_frame_ip_planarY (videodiff, outframe,
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inframe, &oldframe);
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break;
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default:
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g_assert_not_reached ();
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}
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gst_video_frame_unmap (&oldframe);
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gst_buffer_unref (videodiff->previous_buffer);
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} else {
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int k;
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int j;
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for (k = 0; k < 3; k++) {
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for (j = 0; j < GST_VIDEO_FRAME_COMP_HEIGHT (inframe, k); j++) {
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guint8 *d = (guint8 *) outframe->data[k] + outframe->info.stride[k] * j;
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guint8 *s = (guint8 *) inframe->data[k] + inframe->info.stride[k] * j;
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memcpy (d, s, GST_VIDEO_FRAME_COMP_WIDTH (inframe, k));
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}
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}
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}
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videodiff->previous_buffer = gst_buffer_ref (inframe->buffer);
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memcpy (&videodiff->oldinfo, &inframe->info, sizeof (GstVideoInfo));
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return GST_FLOW_OK;
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}
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58
gst/videofilters/gstvideodiff.h
Normal file
58
gst/videofilters/gstvideodiff.h
Normal file
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/* GStreamer
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* Copyright (C) 2013 FIXME <fixme@example.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _GST_VIDEO_DIFF_H_
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#define _GST_VIDEO_DIFF_H_
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#include <gst/video/video.h>
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#include <gst/video/gstvideofilter.h>
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#include <string.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_DIFF (gst_video_diff_get_type())
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#define GST_VIDEO_DIFF(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_DIFF,GstVideoDiff))
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#define GST_VIDEO_DIFF_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_DIFF,GstVideoDiffClass))
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#define GST_IS_VIDEO_DIFF(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_DIFF))
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#define GST_IS_VIDEO_DIFF_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_DIFF))
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typedef struct _GstVideoDiff GstVideoDiff;
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typedef struct _GstVideoDiffClass GstVideoDiffClass;
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||||||
|
struct _GstVideoDiff
|
||||||
|
{
|
||||||
|
GstVideoFilter base_videodiff;
|
||||||
|
|
||||||
|
GstBuffer *previous_buffer;
|
||||||
|
GstVideoInfo oldinfo;
|
||||||
|
|
||||||
|
int threshold;
|
||||||
|
int t;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct _GstVideoDiffClass
|
||||||
|
{
|
||||||
|
GstVideoFilterClass base_videodiff_class;
|
||||||
|
};
|
||||||
|
|
||||||
|
GType gst_video_diff_get_type (void);
|
||||||
|
|
||||||
|
G_END_DECLS
|
||||||
|
|
||||||
|
#endif
|
|
@ -25,6 +25,7 @@
|
||||||
#include <gst/base/gstbasetransform.h>
|
#include <gst/base/gstbasetransform.h>
|
||||||
#include "gstscenechange.h"
|
#include "gstscenechange.h"
|
||||||
#include "gstzebrastripe.h"
|
#include "gstzebrastripe.h"
|
||||||
|
#include "gstvideodiff.h"
|
||||||
|
|
||||||
|
|
||||||
static gboolean
|
static gboolean
|
||||||
|
@ -35,6 +36,8 @@ plugin_init (GstPlugin * plugin)
|
||||||
gst_scene_change_get_type ());
|
gst_scene_change_get_type ());
|
||||||
gst_element_register (plugin, "zebrastripe", GST_RANK_NONE,
|
gst_element_register (plugin, "zebrastripe", GST_RANK_NONE,
|
||||||
gst_zebra_stripe_get_type ());
|
gst_zebra_stripe_get_type ());
|
||||||
|
return gst_element_register (plugin, "videodiff", GST_RANK_NONE,
|
||||||
|
GST_TYPE_VIDEO_DIFF);
|
||||||
|
|
||||||
return TRUE;
|
return TRUE;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue