mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-03-30 12:49:40 +00:00
zebrastripe: Add new GstVideoFilter2 base class
An experiment. Not completely happy with it.
This commit is contained in:
David Schleef
parent
b69450af92
commit
a02c4d6c4c
5 changed files with 503 additions and 166 deletions
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@ -4,6 +4,8 @@ plugin_LTLIBRARIES = libgstvideofiltersbad.la
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#include $(top_srcdir)/common/orc.mak
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libgstvideofiltersbad_la_SOURCES = \
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gstvideofilter2.c \
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gstvideofilter2.h \
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gstzebrastripe.c \
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gstvideofiltersbad.c
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#nodist_libgstvideofiltersbad_la_SOURCES = $(ORC_NODIST_SOURCES)
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290
gst/videofilters/gstvideofilter2.c
Normal file
290
gst/videofilters/gstvideofilter2.c
Normal file
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@ -0,0 +1,290 @@
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/* GStreamer
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* Copyright (C) 2011 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-gstvideofilter2
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*
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* The videofilter2 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 ! videofilter2 ! 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/base/gstbasetransform.h>
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#include <gst/video/video.h>
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#include "gstvideofilter2.h"
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GST_DEBUG_CATEGORY_STATIC (gst_video_filter2_debug_category);
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#define GST_CAT_DEFAULT gst_video_filter2_debug_category
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/* prototypes */
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static void gst_video_filter2_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_video_filter2_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_video_filter2_dispose (GObject * object);
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static void gst_video_filter2_finalize (GObject * object);
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static GstCaps *gst_video_filter2_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps);
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static gboolean
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gst_video_filter2_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
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guint * size);
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static gboolean
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gst_video_filter2_set_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps);
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static gboolean gst_video_filter2_start (GstBaseTransform * trans);
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static gboolean gst_video_filter2_stop (GstBaseTransform * trans);
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static GstFlowReturn gst_video_filter2_transform (GstBaseTransform * trans,
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GstBuffer * inbuf, GstBuffer * outbuf);
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static GstFlowReturn gst_video_filter2_transform_ip (GstBaseTransform * trans,
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GstBuffer * buf);
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enum
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{
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PROP_0
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};
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/* class initialization */
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_video_filter2_debug_category, "videofilter2", 0, \
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"debug category for videofilter2 element");
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GST_BOILERPLATE_FULL (GstVideoFilter2, gst_video_filter2, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
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static void
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gst_video_filter2_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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int i;
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GstCaps *caps = NULL;
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caps = gst_caps_new_empty ();
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for (i = GST_VIDEO_FORMAT_I420; i <= GST_VIDEO_FORMAT_AYUV; i++) {
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gst_caps_append (caps, gst_video_format_new_template_caps (i));
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}
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gst_element_class_add_pad_template (element_class,
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gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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gst_caps_ref (caps)));
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gst_element_class_add_pad_template (element_class,
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gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
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}
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static void
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gst_video_filter2_class_init (GstVideoFilter2Class * 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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gobject_class->set_property = gst_video_filter2_set_property;
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gobject_class->get_property = gst_video_filter2_get_property;
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gobject_class->dispose = gst_video_filter2_dispose;
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gobject_class->finalize = gst_video_filter2_finalize;
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base_transform_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_video_filter2_transform_caps);
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base_transform_class->get_unit_size =
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GST_DEBUG_FUNCPTR (gst_video_filter2_get_unit_size);
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base_transform_class->set_caps =
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GST_DEBUG_FUNCPTR (gst_video_filter2_set_caps);
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base_transform_class->start = GST_DEBUG_FUNCPTR (gst_video_filter2_start);
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base_transform_class->stop = GST_DEBUG_FUNCPTR (gst_video_filter2_stop);
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base_transform_class->transform =
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GST_DEBUG_FUNCPTR (gst_video_filter2_transform);
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base_transform_class->transform_ip =
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GST_DEBUG_FUNCPTR (gst_video_filter2_transform_ip);
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}
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static void
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gst_video_filter2_init (GstVideoFilter2 * videofilter2,
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GstVideoFilter2Class * videofilter2_class)
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{
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gst_base_transform_set_qos_enabled (GST_BASE_TRANSFORM (videofilter2), TRUE);
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}
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void
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gst_video_filter2_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstVideoFilter2 *videofilter2;
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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videofilter2 = GST_VIDEO_FILTER2 (object);
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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_filter2_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstVideoFilter2 *videofilter2;
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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videofilter2 = GST_VIDEO_FILTER2 (object);
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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_filter2_dispose (GObject * object)
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{
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GstVideoFilter2 *videofilter2;
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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videofilter2 = GST_VIDEO_FILTER2 (object);
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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void
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gst_video_filter2_finalize (GObject * object)
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{
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GstVideoFilter2 *videofilter2;
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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videofilter2 = GST_VIDEO_FILTER2 (object);
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/* clean up object here */
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstCaps *
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gst_video_filter2_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps)
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{
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return gst_caps_ref (caps);
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}
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static gboolean
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gst_video_filter2_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
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guint * size)
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{
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GstVideoFormat format;
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gint width, height;
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gboolean ret;
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ret = gst_video_format_parse_caps (caps, &format, &width, &height);
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*size = gst_video_format_get_size (format, width, height);
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return ret;
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}
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static gboolean
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gst_video_filter2_set_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps)
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{
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GstVideoFilter2 *videofilter2;
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gboolean ret;
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int width;
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int height;
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GstVideoFormat format;
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g_return_val_if_fail (GST_IS_VIDEO_FILTER2 (trans), FALSE);
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videofilter2 = GST_VIDEO_FILTER2 (trans);
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ret = gst_video_format_parse_caps (incaps, &format, &width, &height);
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if (ret) {
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videofilter2->format = format;
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videofilter2->width = width;
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videofilter2->height = height;
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}
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return ret;
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}
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static gboolean
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gst_video_filter2_start (GstBaseTransform * trans)
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{
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return FALSE;
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}
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static gboolean
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gst_video_filter2_stop (GstBaseTransform * trans)
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{
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return FALSE;
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}
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static GstFlowReturn
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gst_video_filter2_transform (GstBaseTransform * trans, GstBuffer * inbuf,
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GstBuffer * outbuf)
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{
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return GST_FLOW_ERROR;
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}
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static GstFlowReturn
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gst_video_filter2_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
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{
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GstVideoFilter2 *video_filter2 = GST_VIDEO_FILTER2 (trans);
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GstVideoFilter2Class *klass =
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GST_VIDEO_FILTER2_CLASS (G_OBJECT_GET_CLASS (trans));
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int i;
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GstFlowReturn ret;
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for (i = 0; klass->functions[i].format != GST_VIDEO_FORMAT_UNKNOWN; i++) {
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if (klass->functions[i].format == video_filter2->format) {
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ret = klass->functions[i].filter_ip (video_filter2, buf, 0,
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video_filter2->height);
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return ret;
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}
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}
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return GST_FLOW_ERROR;
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}
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/* API */
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void
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gst_video_filter2_class_add_functions (GstVideoFilter2Class * klass,
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const GstVideoFilter2Functions * functions)
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{
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klass->functions = functions;
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}
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81
gst/videofilters/gstvideofilter2.h
Normal file
81
gst/videofilters/gstvideofilter2.h
Normal file
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@ -0,0 +1,81 @@
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/* GStreamer
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* Copyright (C) 2011 David Schleef <ds@schleef.org>
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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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#ifndef _GST_VIDEO_FILTER2_H_
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#define _GST_VIDEO_FILTER2_H_
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#include <gst/base/gstbasetransform.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_FILTER2 (gst_video_filter2_get_type())
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#define GST_VIDEO_FILTER2(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_FILTER2,GstVideoFilter2))
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#define GST_VIDEO_FILTER2_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_FILTER2,GstVideoFilter2Class))
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#define GST_IS_VIDEO_FILTER2(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_FILTER2))
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#define GST_IS_VIDEO_FILTER2_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_FILTER2))
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typedef struct _GstVideoFilter2 GstVideoFilter2;
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typedef struct _GstVideoFilter2Class GstVideoFilter2Class;
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typedef struct _GstVideoFilter2Functions GstVideoFilter2Functions;
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struct _GstVideoFilter2
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{
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GstBaseTransform base_videofilter2;
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GstVideoFormat format;
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int width;
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int height;
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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struct _GstVideoFilter2Class
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{
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GstBaseTransformClass base_videofilter2_class;
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const GstVideoFilter2Functions *functions;
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GstFlowReturn (*prefilter) (GstVideoFilter2 *filter, GstBuffer *inbuf);
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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struct _GstVideoFilter2Functions
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{
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GstVideoFormat format;
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GstFlowReturn (*filter) (GstVideoFilter2 *filter, GstBuffer *inbuf,
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GstBuffer *outbuf, int start, int end);
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GstFlowReturn (*filter_ip) (GstVideoFilter2 *filter, GstBuffer *buffer,
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int start, int end);
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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#define GST_VIDEO_FILTER2_FORMAT(vf) (((GstVideoFilter2 *)vf)->format)
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#define GST_VIDEO_FILTER2_WIDTH(vf) (((GstVideoFilter2 *)vf)->width)
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#define GST_VIDEO_FILTER2_HEIGHT(vf) (((GstVideoFilter2 *)vf)->height)
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GType gst_video_filter2_get_type (void);
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void gst_video_filter2_class_add_functions (GstVideoFilter2Class *klass,
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const GstVideoFilter2Functions *functions);
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G_END_DECLS
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#endif
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@ -62,19 +62,15 @@ static void gst_zebra_stripe_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_zebra_stripe_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_zebra_stripe_dispose (GObject * object);
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static void gst_zebra_stripe_finalize (GObject * object);
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static gboolean
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gst_zebra_stripe_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
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guint * size);
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static gboolean
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gst_zebra_stripe_set_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps);
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static gboolean gst_zebra_stripe_start (GstBaseTransform * trans);
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static gboolean gst_zebra_stripe_stop (GstBaseTransform * trans);
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static GstFlowReturn gst_zebra_stripe_transform_ip (GstBaseTransform * trans,
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GstBuffer * buf);
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static GstFlowReturn
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gst_zebra_stripe_prefilter (GstVideoFilter2 * videofilter2, GstBuffer * buf);
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static GstVideoFilter2Functions gst_zebra_stripe_filter_functions[];
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enum
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{
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@ -84,44 +80,20 @@ enum
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#define DEFAULT_THRESHOLD 90
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/* pad templates */
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static GstStaticPadTemplate gst_zebra_stripe_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
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("{I420,YV12,Y41B,Y42B,NV12,NV21,YUV9,YVU9,Y444,UYVY,YVYU,YUY2,AYUV}"))
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);
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static GstStaticPadTemplate gst_zebra_stripe_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
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("{I420,YV12,Y41B,Y42B,NV12,NV21,YUV9,YVU9,Y444,UYVY,YVYU,YUY2,AYUV}"))
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);
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/* class initialization */
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#define DEBUG_INIT(bla) \
|
||||
GST_DEBUG_CATEGORY_INIT (gst_zebra_stripe_debug_category, "zebrastripe", 0, \
|
||||
"debug category for zebrastripe element");
|
||||
|
||||
GST_BOILERPLATE_FULL (GstZebraStripe, gst_zebra_stripe, GstBaseTransform,
|
||||
GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
|
||||
GST_BOILERPLATE_FULL (GstZebraStripe, gst_zebra_stripe, GstVideoFilter2,
|
||||
GST_TYPE_VIDEO_FILTER2, DEBUG_INIT);
|
||||
|
||||
static void
|
||||
gst_zebra_stripe_base_init (gpointer g_class)
|
||||
{
|
||||
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&gst_zebra_stripe_sink_template));
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&gst_zebra_stripe_src_template));
|
||||
|
||||
gst_element_class_set_details_simple (element_class, "Zebra stripe overlay",
|
||||
"Filter/Analysis",
|
||||
"Overlays zebra striping on overexposed areas of video",
|
||||
|
|
@ -132,21 +104,18 @@ static void
|
|||
gst_zebra_stripe_class_init (GstZebraStripeClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
||||
GstVideoFilter2Class *video_filter2_class = GST_VIDEO_FILTER2_CLASS (klass);
|
||||
GstBaseTransformClass *base_transform_class =
|
||||
GST_BASE_TRANSFORM_CLASS (klass);
|
||||
|
||||
gobject_class->set_property = gst_zebra_stripe_set_property;
|
||||
gobject_class->get_property = gst_zebra_stripe_get_property;
|
||||
gobject_class->dispose = gst_zebra_stripe_dispose;
|
||||
gobject_class->finalize = gst_zebra_stripe_finalize;
|
||||
base_transform_class->get_unit_size =
|
||||
GST_DEBUG_FUNCPTR (gst_zebra_stripe_get_unit_size);
|
||||
base_transform_class->set_caps =
|
||||
GST_DEBUG_FUNCPTR (gst_zebra_stripe_set_caps);
|
||||
base_transform_class->start = GST_DEBUG_FUNCPTR (gst_zebra_stripe_start);
|
||||
base_transform_class->stop = GST_DEBUG_FUNCPTR (gst_zebra_stripe_stop);
|
||||
base_transform_class->transform_ip =
|
||||
GST_DEBUG_FUNCPTR (gst_zebra_stripe_transform_ip);
|
||||
|
||||
video_filter2_class->prefilter =
|
||||
GST_DEBUG_FUNCPTR (gst_zebra_stripe_prefilter);
|
||||
|
||||
g_object_class_install_property (gobject_class, PROP_THRESHOLD,
|
||||
g_param_spec_int ("threshold", "Threshold",
|
||||
|
|
@ -154,6 +123,8 @@ gst_zebra_stripe_class_init (GstZebraStripeClass * klass)
|
|||
DEFAULT_THRESHOLD,
|
||||
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
gst_video_filter2_class_add_functions (video_filter2_class,
|
||||
gst_zebra_stripe_filter_functions);
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -161,12 +132,6 @@ gst_zebra_stripe_init (GstZebraStripe * zebrastripe,
|
|||
GstZebraStripeClass * zebrastripe_class)
|
||||
{
|
||||
|
||||
zebrastripe->sinkpad =
|
||||
gst_pad_new_from_static_template (&gst_zebra_stripe_sink_template,
|
||||
"sink");
|
||||
|
||||
zebrastripe->srcpad =
|
||||
gst_pad_new_from_static_template (&gst_zebra_stripe_src_template, "src");
|
||||
}
|
||||
|
||||
void
|
||||
|
|
@ -181,6 +146,8 @@ gst_zebra_stripe_set_property (GObject * object, guint property_id,
|
|||
switch (property_id) {
|
||||
case PROP_THRESHOLD:
|
||||
zebrastripe->threshold = g_value_get_int (value);
|
||||
zebrastripe->y_threshold =
|
||||
16 + floor (0.5 + 2.19 * zebrastripe->threshold);
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||||
|
|
@ -207,19 +174,6 @@ gst_zebra_stripe_get_property (GObject * object, guint property_id,
|
|||
}
|
||||
}
|
||||
|
||||
void
|
||||
gst_zebra_stripe_dispose (GObject * object)
|
||||
{
|
||||
GstZebraStripe *zebrastripe;
|
||||
|
||||
g_return_if_fail (GST_IS_ZEBRA_STRIPE (object));
|
||||
zebrastripe = GST_ZEBRA_STRIPE (object);
|
||||
|
||||
/* clean up as possible. may be called multiple times */
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose (object);
|
||||
}
|
||||
|
||||
void
|
||||
gst_zebra_stripe_finalize (GObject * object)
|
||||
{
|
||||
|
|
@ -234,39 +188,6 @@ gst_zebra_stripe_finalize (GObject * object)
|
|||
}
|
||||
|
||||
|
||||
static gboolean
|
||||
gst_zebra_stripe_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
|
||||
guint * size)
|
||||
{
|
||||
int width, height;
|
||||
GstVideoFormat format;
|
||||
gboolean ret;
|
||||
|
||||
ret = gst_video_format_parse_caps (caps, &format, &width, &height);
|
||||
*size = gst_video_format_get_size (format, width, height);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_zebra_stripe_set_caps (GstBaseTransform * trans, GstCaps * incaps,
|
||||
GstCaps * outcaps)
|
||||
{
|
||||
GstZebraStripe *zebrastripe = GST_ZEBRA_STRIPE (trans);
|
||||
int width, height;
|
||||
GstVideoFormat format;
|
||||
gboolean ret;
|
||||
|
||||
ret = gst_video_format_parse_caps (incaps, &format, &width, &height);
|
||||
if (ret) {
|
||||
zebrastripe->format = format;
|
||||
zebrastripe->width = width;
|
||||
zebrastripe->height = height;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_zebra_stripe_start (GstBaseTransform * trans)
|
||||
{
|
||||
|
|
@ -282,72 +203,120 @@ gst_zebra_stripe_stop (GstBaseTransform * trans)
|
|||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_zebra_stripe_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
|
||||
gst_zebra_stripe_prefilter (GstVideoFilter2 * videofilter2, GstBuffer * buf)
|
||||
{
|
||||
GstZebraStripe *zebrastripe = GST_ZEBRA_STRIPE (trans);
|
||||
int i, j;
|
||||
int threshold;
|
||||
int t;
|
||||
guint8 *ydata;
|
||||
int ystride;
|
||||
|
||||
threshold = 16 + floor (0.5 + 2.19 * zebrastripe->threshold);
|
||||
t = zebrastripe->t;
|
||||
|
||||
ydata = GST_BUFFER_DATA (buf);
|
||||
ystride = gst_video_format_get_row_stride (zebrastripe->format,
|
||||
0, zebrastripe->width);
|
||||
switch (zebrastripe->format) {
|
||||
case GST_VIDEO_FORMAT_I420:
|
||||
case GST_VIDEO_FORMAT_YV12:
|
||||
case GST_VIDEO_FORMAT_Y41B:
|
||||
case GST_VIDEO_FORMAT_Y42B:
|
||||
case GST_VIDEO_FORMAT_NV12:
|
||||
case GST_VIDEO_FORMAT_NV21:
|
||||
case GST_VIDEO_FORMAT_YUV9:
|
||||
case GST_VIDEO_FORMAT_YVU9:
|
||||
case GST_VIDEO_FORMAT_Y444:
|
||||
for (j = 0; j < zebrastripe->height; j++) {
|
||||
guint8 *data = ydata + ystride * j;
|
||||
for (i = 0; i < zebrastripe->width; i++) {
|
||||
if (data[i] >= threshold) {
|
||||
if ((i + j + t) & 0x4)
|
||||
data[i] = 16;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
case GST_VIDEO_FORMAT_UYVY:
|
||||
ydata++;
|
||||
case GST_VIDEO_FORMAT_YUY2:
|
||||
case GST_VIDEO_FORMAT_YVYU:
|
||||
for (j = 0; j < zebrastripe->height; j++) {
|
||||
guint8 *data = ydata + ystride * j;
|
||||
for (i = 0; i < zebrastripe->width; i++) {
|
||||
if (data[2 * i] >= threshold) {
|
||||
if ((i + j + t) & 0x4)
|
||||
data[2 * i] = 16;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
case GST_VIDEO_FORMAT_AYUV:
|
||||
ydata++;
|
||||
for (j = 0; j < zebrastripe->height; j++) {
|
||||
guint8 *data = ydata + ystride * j;
|
||||
for (i = 0; i < zebrastripe->width; i++) {
|
||||
if (data[4 * i] >= threshold) {
|
||||
if ((i + j + t) & 0x4)
|
||||
data[4 * i] = 16;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
default:
|
||||
g_assert_not_reached ();
|
||||
}
|
||||
GstZebraStripe *zebrastripe = GST_ZEBRA_STRIPE (videofilter2);
|
||||
|
||||
zebrastripe->t++;
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_zebra_stripe_filter_ip_planarY (GstVideoFilter2 * videofilter2,
|
||||
GstBuffer * buf, int start, int end)
|
||||
{
|
||||
GstZebraStripe *zebrastripe = GST_ZEBRA_STRIPE (videofilter2);
|
||||
int width = GST_VIDEO_FILTER2_WIDTH (zebrastripe);
|
||||
int i, j;
|
||||
int threshold = zebrastripe->y_threshold;
|
||||
int t = zebrastripe->t;
|
||||
guint8 *ydata;
|
||||
int ystride;
|
||||
|
||||
ydata = GST_BUFFER_DATA (buf);
|
||||
ystride =
|
||||
gst_video_format_get_row_stride (GST_VIDEO_FILTER2_FORMAT (videofilter2),
|
||||
0, width);
|
||||
|
||||
for (j = start; j < end; j++) {
|
||||
guint8 *data = ydata + ystride * j;
|
||||
for (i = 0; i < width; i++) {
|
||||
if (data[i] >= threshold) {
|
||||
if ((i + j + t) & 0x4)
|
||||
data[i] = 16;
|
||||
}
|
||||
}
|
||||
}
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_zebra_stripe_filter_ip_YxYy (GstVideoFilter2 * videofilter2,
|
||||
GstBuffer * buf, int start, int end)
|
||||
{
|
||||
GstZebraStripe *zebrastripe = GST_ZEBRA_STRIPE (videofilter2);
|
||||
GstVideoFormat format = GST_VIDEO_FILTER2_FORMAT (zebrastripe);
|
||||
int width = GST_VIDEO_FILTER2_WIDTH (zebrastripe);
|
||||
int i, j;
|
||||
int threshold = zebrastripe->y_threshold;
|
||||
int t = zebrastripe->t;
|
||||
guint8 *ydata;
|
||||
int ystride;
|
||||
|
||||
ydata = GST_BUFFER_DATA (buf);
|
||||
ystride = gst_video_format_get_row_stride (format, 0, width);
|
||||
|
||||
if (format == GST_VIDEO_FORMAT_UYVY) {
|
||||
ydata++;
|
||||
}
|
||||
|
||||
for (j = start; j < end; j++) {
|
||||
guint8 *data = ydata + ystride * j;
|
||||
for (i = 0; i < width; i++) {
|
||||
if (data[2 * i] >= threshold) {
|
||||
if ((i + j + t) & 0x4)
|
||||
data[2 * i] = 16;
|
||||
}
|
||||
}
|
||||
}
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_zebra_stripe_filter_ip_AYUV (GstVideoFilter2 * videofilter2,
|
||||
GstBuffer * buf, int start, int end)
|
||||
{
|
||||
GstZebraStripe *zebrastripe = GST_ZEBRA_STRIPE (videofilter2);
|
||||
int width = GST_VIDEO_FILTER2_WIDTH (zebrastripe);
|
||||
int i, j;
|
||||
int threshold = zebrastripe->y_threshold;
|
||||
int t = zebrastripe->t;
|
||||
guint8 *ydata;
|
||||
int ystride;
|
||||
|
||||
ydata = GST_BUFFER_DATA (buf);
|
||||
ystride =
|
||||
gst_video_format_get_row_stride (GST_VIDEO_FILTER2_FORMAT (videofilter2),
|
||||
0, width);
|
||||
|
||||
ydata++;
|
||||
for (j = start; j < end; j++) {
|
||||
guint8 *data = ydata + ystride * j;
|
||||
for (i = 0; i < width; i++) {
|
||||
if (data[4 * i] >= threshold) {
|
||||
if ((i + j + t) & 0x4)
|
||||
data[4 * i] = 16;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static GstVideoFilter2Functions gst_zebra_stripe_filter_functions[] = {
|
||||
{GST_VIDEO_FORMAT_I420, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_YV12, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_Y41B, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_Y42B, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_NV12, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_NV21, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_YUV9, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_YVU9, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_Y444, NULL, gst_zebra_stripe_filter_ip_planarY},
|
||||
{GST_VIDEO_FORMAT_UYVY, NULL, gst_zebra_stripe_filter_ip_YxYy},
|
||||
{GST_VIDEO_FORMAT_YUY2, NULL, gst_zebra_stripe_filter_ip_YxYy},
|
||||
{GST_VIDEO_FORMAT_YVYU, NULL, gst_zebra_stripe_filter_ip_YxYy},
|
||||
{GST_VIDEO_FORMAT_AYUV, NULL, gst_zebra_stripe_filter_ip_AYUV},
|
||||
{GST_VIDEO_FORMAT_UNKNOWN}
|
||||
};
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@
|
|||
#ifndef _GST_ZEBRA_STRIPE_H_
|
||||
#define _GST_ZEBRA_STRIPE_H_
|
||||
|
||||
#include <gst/base/gstbasetransform.h>
|
||||
#include "gstvideofilter2.h"
|
||||
#include <gst/video/video.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
|
@ -36,25 +36,20 @@ typedef struct _GstZebraStripeClass GstZebraStripeClass;
|
|||
|
||||
struct _GstZebraStripe
|
||||
{
|
||||
GstBaseTransform base_zebrastripe;
|
||||
|
||||
GstPad *sinkpad;
|
||||
GstPad *srcpad;
|
||||
GstVideoFilter2 video_filter2;
|
||||
|
||||
/* properties */
|
||||
int threshold;
|
||||
|
||||
/* state */
|
||||
GstVideoFormat format;
|
||||
int width;
|
||||
int height;
|
||||
int t;
|
||||
int y_threshold;
|
||||
|
||||
};
|
||||
|
||||
struct _GstZebraStripeClass
|
||||
{
|
||||
GstBaseTransformClass base_zebrastripe_class;
|
||||
GstVideoFilter2Class video_filter2_class;
|
||||
};
|
||||
|
||||
GType gst_zebra_stripe_get_type (void);
|
||||
|
|
|
|||
Loading…
Reference in a new issue