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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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691 lines
20 KiB
C
691 lines
20 KiB
C
/* GStreamer Element
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*
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* Copyright 2011 Collabora Ltd.
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* @author: Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
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* Copyright 2011 Nokia Corp.
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads.h>
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#include <gst/video/video.h>
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#include "gstcompare.h"
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GST_DEBUG_CATEGORY_STATIC (compare_debug);
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#define GST_CAT_DEFAULT compare_debug
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static GstStaticPadTemplate src_factory = 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_ANY);
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static GstStaticPadTemplate sink_factory = 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_ANY);
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static GstStaticPadTemplate check_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("check",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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enum GstCompareMethod
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{
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GST_COMPARE_METHOD_MEM,
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GST_COMPARE_METHOD_MAX,
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GST_COMPARE_METHOD_SSIM
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};
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#define GST_COMPARE_METHOD_TYPE (gst_compare_method_get_type())
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static GType
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gst_compare_method_get_type (void)
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{
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static GType method_type = 0;
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static const GEnumValue method_types[] = {
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{GST_COMPARE_METHOD_MEM, "Memory", "mem"},
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{GST_COMPARE_METHOD_MAX, "Maximum metric", "max"},
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{GST_COMPARE_METHOD_SSIM, "SSIM (raw video)", "ssim"},
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{0, NULL, NULL}
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};
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if (!method_type) {
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method_type = g_enum_register_static ("GstCompareMethod", method_types);
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}
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return method_type;
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}
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/* Filter signals and args */
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enum
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{
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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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{
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PROP_0,
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PROP_META,
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PROP_OFFSET_TS,
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PROP_METHOD,
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PROP_THRESHOLD,
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PROP_UPPER,
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PROP_LAST
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};
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#define DEFAULT_META GST_BUFFER_COPY_ALL
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#define DEFAULT_OFFSET_TS FALSE
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#define DEFAULT_METHOD GST_COMPARE_METHOD_MEM
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#define DEFAULT_THRESHOLD 0
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#define DEFAULT_UPPER TRUE
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static void gst_compare_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_compare_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static void gst_compare_reset (GstCompare * overlay);
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static gboolean gst_compare_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static GstFlowReturn gst_compare_collect_pads (GstCollectPads * cpads,
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GstCompare * comp);
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static GstStateChangeReturn gst_compare_change_state (GstElement * element,
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GstStateChange transition);
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#define gst_compare_parent_class parent_class
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G_DEFINE_TYPE (GstCompare, gst_compare, GST_TYPE_ELEMENT);
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static void
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gst_compare_finalize (GObject * object)
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{
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GstCompare *comp = GST_COMPARE (object);
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gst_object_unref (comp->cpads);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_compare_class_init (GstCompareClass * 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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GST_DEBUG_CATEGORY_INIT (compare_debug, "compare", 0, "Compare buffers");
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_compare_change_state);
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gobject_class->set_property = gst_compare_set_property;
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gobject_class->get_property = gst_compare_get_property;
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gobject_class->finalize = gst_compare_finalize;
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g_object_class_install_property (gobject_class, PROP_META,
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g_param_spec_flags ("meta", "Compare Meta",
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"Indicates which metadata should be compared",
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gst_buffer_copy_flags_get_type (), DEFAULT_META,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_OFFSET_TS,
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g_param_spec_boolean ("offset-ts", "Offsets Timestamps",
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"Consider OFFSET and OFFSET_END part of timestamp metadata",
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DEFAULT_OFFSET_TS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_METHOD,
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g_param_spec_enum ("method", "Content Compare Method",
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"Method to compare buffer content",
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GST_COMPARE_METHOD_TYPE, DEFAULT_METHOD,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_THRESHOLD,
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g_param_spec_double ("threshold", "Content Threshold",
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"Threshold beyond which to consider content different as determined by content-method",
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0, G_MAXDOUBLE, DEFAULT_THRESHOLD,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_UPPER,
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g_param_spec_boolean ("upper", "Threshold Upper Bound",
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"Whether threshold value is upper bound or lower bound for difference measure",
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DEFAULT_UPPER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&check_sink_factory));
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gst_element_class_set_static_metadata (gstelement_class, "Compare buffers",
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"Filter/Debug", "Compares incoming buffers",
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"Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>");
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}
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static void
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gst_compare_init (GstCompare * comp)
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{
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comp->cpads = gst_collect_pads_new ();
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gst_collect_pads_set_function (comp->cpads,
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(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_compare_collect_pads),
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comp);
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comp->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
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GST_PAD_SET_PROXY_CAPS (comp->sinkpad);
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gst_element_add_pad (GST_ELEMENT (comp), comp->sinkpad);
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comp->checkpad =
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gst_pad_new_from_static_template (&check_sink_factory, "check");
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gst_pad_set_query_function (comp->checkpad, gst_compare_query);
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gst_element_add_pad (GST_ELEMENT (comp), comp->checkpad);
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gst_collect_pads_add_pad (comp->cpads, comp->sinkpad,
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sizeof (GstCollectData), NULL, TRUE);
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gst_collect_pads_add_pad (comp->cpads, comp->checkpad,
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sizeof (GstCollectData), NULL, TRUE);
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comp->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
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gst_pad_set_query_function (comp->srcpad, gst_compare_query);
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gst_element_add_pad (GST_ELEMENT (comp), comp->srcpad);
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/* init properties */
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comp->meta = DEFAULT_META;
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comp->offset_ts = DEFAULT_OFFSET_TS;
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comp->method = DEFAULT_METHOD;
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comp->threshold = DEFAULT_THRESHOLD;
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comp->upper = DEFAULT_UPPER;
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gst_compare_reset (comp);
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}
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static void
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gst_compare_reset (GstCompare * comp)
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{
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}
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static gboolean
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gst_compare_query (GstPad * pad, GstObject * parent, GstQuery * query)
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{
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GstCompare *comp;
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GstPad *otherpad;
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comp = GST_COMPARE (parent);
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otherpad = (pad == comp->srcpad ? comp->sinkpad : comp->srcpad);
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return gst_pad_peer_query (otherpad, query);
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}
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static void
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gst_compare_meta (GstCompare * comp, GstBuffer * buf1, GstCaps * caps1,
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GstBuffer * buf2, GstCaps * caps2)
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{
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gint flags = 0;
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if (comp->meta & GST_BUFFER_COPY_FLAGS) {
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if (GST_BUFFER_FLAGS (buf1) != GST_BUFFER_FLAGS (buf2)) {
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flags |= GST_BUFFER_COPY_FLAGS;
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GST_DEBUG_OBJECT (comp, "flags %d != flags %d", GST_BUFFER_FLAGS (buf1),
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GST_BUFFER_FLAGS (buf2));
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}
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}
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if (comp->meta & GST_BUFFER_COPY_TIMESTAMPS) {
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if (GST_BUFFER_TIMESTAMP (buf1) != GST_BUFFER_TIMESTAMP (buf2)) {
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flags |= GST_BUFFER_COPY_TIMESTAMPS;
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GST_DEBUG_OBJECT (comp,
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"ts %" GST_TIME_FORMAT " != ts %" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf1)),
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf2)));
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}
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if (GST_BUFFER_DURATION (buf1) != GST_BUFFER_DURATION (buf2)) {
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flags |= GST_BUFFER_COPY_TIMESTAMPS;
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GST_DEBUG_OBJECT (comp,
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"dur %" GST_TIME_FORMAT " != dur %" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_DURATION (buf1)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (buf2)));
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}
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if (comp->offset_ts) {
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if (GST_BUFFER_OFFSET (buf1) != GST_BUFFER_OFFSET (buf2)) {
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flags |= GST_BUFFER_COPY_TIMESTAMPS;
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GST_DEBUG_OBJECT (comp,
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"offset %" G_GINT64_FORMAT " != offset %" G_GINT64_FORMAT,
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GST_BUFFER_OFFSET (buf1), GST_BUFFER_OFFSET (buf2));
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}
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if (GST_BUFFER_OFFSET_END (buf1) != GST_BUFFER_OFFSET_END (buf2)) {
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flags |= GST_BUFFER_COPY_TIMESTAMPS;
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GST_DEBUG_OBJECT (comp,
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"offset_end %" G_GINT64_FORMAT " != offset_end %" G_GINT64_FORMAT,
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GST_BUFFER_OFFSET_END (buf1), GST_BUFFER_OFFSET_END (buf2));
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}
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}
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}
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#if 0
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/* FIXME ?? */
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if (comp->meta & GST_BUFFER_COPY_CAPS) {
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if (!gst_caps_is_equal (caps1, caps2)) {
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flags |= GST_BUFFER_COPY_CAPS;
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GST_DEBUG_OBJECT (comp,
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"caps %" GST_PTR_FORMAT " != caps %" GST_PTR_FORMAT, caps1, caps2);
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}
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}
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#endif
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/* signal mismatch by debug and message */
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if (flags) {
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GST_WARNING_OBJECT (comp, "buffers %p and %p failed metadata match %d",
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buf1, buf2, flags);
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gst_element_post_message (GST_ELEMENT (comp),
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gst_message_new_element (GST_OBJECT (comp),
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gst_structure_new ("delta", "meta", G_TYPE_INT, flags, NULL)));
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}
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}
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/* when comparing contents, it is already ensured sizes are equal */
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static gint
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gst_compare_mem (GstCompare * comp, GstBuffer * buf1, GstCaps * caps1,
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GstBuffer * buf2, GstCaps * caps2)
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{
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GstMapInfo map1, map2;
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gint c;
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gst_buffer_map (buf1, &map1, GST_MAP_READ);
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gst_buffer_map (buf2, &map2, GST_MAP_READ);
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c = memcmp (map1.data, map2.data, map1.size);
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gst_buffer_unmap (buf1, &map1);
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gst_buffer_unmap (buf2, &map2);
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return c ? 1 : 0;
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}
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static gint
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gst_compare_max (GstCompare * comp, GstBuffer * buf1, GstCaps * caps1,
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GstBuffer * buf2, GstCaps * caps2)
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{
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gint i, delta = 0;
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gint8 *data1, *data2;
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GstMapInfo map1, map2;
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gst_buffer_map (buf1, &map1, GST_MAP_READ);
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gst_buffer_map (buf2, &map2, GST_MAP_READ);
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data1 = (gint8 *) map1.data;
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data2 = (gint8 *) map2.data;
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/* primitive loop */
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for (i = 0; i < map1.size; i++) {
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gint diff = ABS (*data1 - *data2);
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if (diff > 0)
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GST_LOG_OBJECT (comp, "diff at %d = %d", i, diff);
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delta = MAX (delta, ABS (*data1 - *data2));
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data1++;
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data2++;
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}
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gst_buffer_unmap (buf1, &map1);
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gst_buffer_unmap (buf2, &map2);
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return delta;
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}
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static double
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gst_compare_ssim_window (GstCompare * comp, guint8 * data1, guint8 * data2,
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gint width, gint height, gint step, gint stride)
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{
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gint count = 0, i, j;
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gint sum1 = 0, sum2 = 0, ssum1 = 0, ssum2 = 0, acov = 0;
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gdouble avg1, avg2, var1, var2, cov;
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const gdouble k1 = 0.01;
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const gdouble k2 = 0.03;
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const gdouble L = 255.0;
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const gdouble c1 = (k1 * L) * (k1 * L);
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const gdouble c2 = (k2 * L) * (k2 * L);
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/* plain and simple; no fancy optimizations */
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for (i = 0; i < height; i++) {
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for (j = 0; j < width; j++) {
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sum1 += *data1;
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sum2 += *data2;
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ssum1 += *data1 * *data1;
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ssum2 += *data2 * *data2;
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acov += *data1 * *data2;
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count++;
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data1 += step;
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data2 += step;
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}
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data1 -= j * step;
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data2 -= j * step;
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data1 += stride;
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data2 += stride;
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}
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avg1 = sum1 / count;
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avg2 = sum2 / count;
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var1 = ssum1 / count - avg1 * avg1;
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var2 = ssum2 / count - avg2 * avg2;
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cov = acov / count - avg1 * avg2;
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return (2 * avg1 * avg2 + c1) * (2 * cov + c2) /
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((avg1 * avg1 + avg2 * avg2 + c1) * (var1 + var2 + c2));
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}
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/* @width etc are for the particular component */
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static gdouble
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gst_compare_ssim_component (GstCompare * comp, guint8 * data1, guint8 * data2,
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gint width, gint height, gint step, gint stride)
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{
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const gint window = 16;
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gdouble ssim_sum = 0;
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gint count = 0, i, j;
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for (j = 0; j + (window / 2) < height; j += (window / 2)) {
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for (i = 0; i + (window / 2) < width; i += (window / 2)) {
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gdouble ssim;
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ssim = gst_compare_ssim_window (comp, data1 + step * i + j * stride,
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data2 + step * i + j * stride,
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MIN (window, width - i), MIN (window, height - j), step, stride);
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GST_LOG_OBJECT (comp, "ssim for %dx%d at (%d, %d) = %f", window, window,
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i, j, ssim);
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ssim_sum += ssim;
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count++;
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}
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}
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return (ssim_sum / count);
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}
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static gdouble
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gst_compare_ssim (GstCompare * comp, GstBuffer * buf1, GstCaps * caps1,
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GstBuffer * buf2, GstCaps * caps2)
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{
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GstVideoInfo info1, info2;
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GstVideoFrame frame1, frame2;
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gint i, comps;
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gdouble cssim[4], ssim, c[4] = { 1.0, 0.0, 0.0, 0.0 };
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if (!caps1)
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goto invalid_input;
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if (!gst_video_info_from_caps (&info1, caps1))
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goto invalid_input;
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if (!caps2)
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goto invalid_input;
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if (!gst_video_info_from_caps (&info2, caps1))
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goto invalid_input;
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if (GST_VIDEO_INFO_FORMAT (&info1) != GST_VIDEO_INFO_FORMAT (&info2) ||
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GST_VIDEO_INFO_WIDTH (&info1) != GST_VIDEO_INFO_WIDTH (&info2) ||
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GST_VIDEO_INFO_HEIGHT (&info1) != GST_VIDEO_INFO_HEIGHT (&info2))
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return comp->threshold + 1;
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comps = GST_VIDEO_INFO_N_COMPONENTS (&info1);
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/* note that some are reported both yuv and gray */
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for (i = 0; i < comps; ++i)
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c[i] = 1.0;
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/* increase luma weight if yuv */
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if (GST_VIDEO_INFO_IS_YUV (&info1) && (comps > 1))
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c[0] = comps - 1;
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for (i = 0; i < comps; ++i)
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c[i] /= (GST_VIDEO_INFO_IS_YUV (&info1) && (comps > 1)) ?
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2 * (comps - 1) : comps;
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gst_video_frame_map (&frame1, &info1, buf1, GST_MAP_READ);
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gst_video_frame_map (&frame2, &info2, buf2, GST_MAP_READ);
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|
|
|
for (i = 0; i < comps; i++) {
|
|
gint cw, ch, step, stride;
|
|
|
|
/* only support most common formats */
|
|
if (GST_VIDEO_INFO_COMP_DEPTH (&info1, i) != 8)
|
|
goto unsupported_input;
|
|
cw = GST_VIDEO_FRAME_COMP_WIDTH (&frame1, i);
|
|
ch = GST_VIDEO_FRAME_COMP_HEIGHT (&frame1, i);
|
|
step = GST_VIDEO_FRAME_COMP_PSTRIDE (&frame1, i);
|
|
stride = GST_VIDEO_FRAME_COMP_STRIDE (&frame1, i);
|
|
|
|
GST_LOG_OBJECT (comp, "component %d", i);
|
|
cssim[i] = gst_compare_ssim_component (comp,
|
|
GST_VIDEO_FRAME_COMP_DATA (&frame1, i),
|
|
GST_VIDEO_FRAME_COMP_DATA (&frame2, i), cw, ch, step, stride);
|
|
GST_LOG_OBJECT (comp, "ssim[%d] = %f", i, cssim[i]);
|
|
}
|
|
|
|
gst_video_frame_unmap (&frame1);
|
|
gst_video_frame_unmap (&frame2);
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
for (i = 0; i < 4; i++) {
|
|
GST_DEBUG_OBJECT (comp, "ssim[%d] = %f, c[%d] = %f", i, cssim[i], i, c[i]);
|
|
}
|
|
#endif
|
|
|
|
ssim = cssim[0] * c[0] + cssim[1] * c[1] + cssim[2] * c[2] + cssim[3] * c[3];
|
|
|
|
return ssim;
|
|
|
|
/* ERRORS */
|
|
invalid_input:
|
|
{
|
|
GST_ERROR_OBJECT (comp, "ssim method needs raw video input");
|
|
return 0;
|
|
}
|
|
unsupported_input:
|
|
{
|
|
GST_ERROR_OBJECT (comp, "raw video format not supported %" GST_PTR_FORMAT,
|
|
caps1);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_compare_buffers (GstCompare * comp, GstBuffer * buf1, GstCaps * caps1,
|
|
GstBuffer * buf2, GstCaps * caps2)
|
|
{
|
|
gdouble delta = 0;
|
|
gsize size1, size2;
|
|
|
|
/* first check metadata */
|
|
gst_compare_meta (comp, buf1, caps1, buf2, caps2);
|
|
|
|
size1 = gst_buffer_get_size (buf1);
|
|
size2 = gst_buffer_get_size (buf1);
|
|
|
|
/* check content according to method */
|
|
/* but at least size should match */
|
|
if (size1 != size2) {
|
|
delta = comp->threshold + 1;
|
|
} else {
|
|
GstMapInfo map1, map2;
|
|
|
|
gst_buffer_map (buf1, &map1, GST_MAP_READ);
|
|
gst_buffer_map (buf2, &map2, GST_MAP_READ);
|
|
GST_MEMDUMP_OBJECT (comp, "buffer 1", map1.data, map2.size);
|
|
GST_MEMDUMP_OBJECT (comp, "buffer 2", map2.data, map2.size);
|
|
gst_buffer_unmap (buf1, &map1);
|
|
gst_buffer_unmap (buf2, &map2);
|
|
switch (comp->method) {
|
|
case GST_COMPARE_METHOD_MEM:
|
|
delta = gst_compare_mem (comp, buf1, caps1, buf2, caps2);
|
|
break;
|
|
case GST_COMPARE_METHOD_MAX:
|
|
delta = gst_compare_max (comp, buf1, caps1, buf2, caps2);
|
|
break;
|
|
case GST_COMPARE_METHOD_SSIM:
|
|
delta = gst_compare_ssim (comp, buf1, caps1, buf2, caps2);
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((comp->upper && delta > comp->threshold) ||
|
|
(!comp->upper && delta < comp->threshold)) {
|
|
GST_WARNING_OBJECT (comp, "buffers %p and %p failed content match %f",
|
|
buf1, buf2, delta);
|
|
|
|
gst_element_post_message (GST_ELEMENT (comp),
|
|
gst_message_new_element (GST_OBJECT (comp),
|
|
gst_structure_new ("delta", "content", G_TYPE_DOUBLE, delta,
|
|
NULL)));
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_compare_collect_pads (GstCollectPads * cpads, GstCompare * comp)
|
|
{
|
|
GstBuffer *buf1, *buf2;
|
|
GstCaps *caps1, *caps2;
|
|
|
|
buf1 = gst_collect_pads_pop (comp->cpads,
|
|
gst_pad_get_element_private (comp->sinkpad));
|
|
caps1 = gst_pad_get_current_caps (comp->sinkpad);
|
|
|
|
buf2 = gst_collect_pads_pop (comp->cpads,
|
|
gst_pad_get_element_private (comp->checkpad));
|
|
caps2 = gst_pad_get_current_caps (comp->checkpad);
|
|
|
|
if (!buf1 && !buf2) {
|
|
gst_pad_push_event (comp->srcpad, gst_event_new_eos ());
|
|
return GST_FLOW_EOS;
|
|
} else if (buf1 && buf2) {
|
|
gst_compare_buffers (comp, buf1, caps1, buf2, caps2);
|
|
} else {
|
|
GST_WARNING_OBJECT (comp, "buffer %p != NULL", buf1 ? buf1 : buf2);
|
|
|
|
comp->count++;
|
|
gst_element_post_message (GST_ELEMENT (comp),
|
|
gst_message_new_element (GST_OBJECT (comp),
|
|
gst_structure_new ("delta", "count", G_TYPE_INT, comp->count,
|
|
NULL)));
|
|
}
|
|
|
|
if (buf1)
|
|
gst_pad_push (comp->srcpad, buf1);
|
|
|
|
if (buf2)
|
|
gst_buffer_unref (buf2);
|
|
|
|
if (caps1)
|
|
gst_caps_unref (caps1);
|
|
|
|
if (caps2)
|
|
gst_caps_unref (caps2);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static void
|
|
gst_compare_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstCompare *comp = GST_COMPARE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_META:
|
|
comp->meta = g_value_get_flags (value);
|
|
break;
|
|
case PROP_OFFSET_TS:
|
|
comp->offset_ts = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_METHOD:
|
|
comp->method = g_value_get_enum (value);
|
|
break;
|
|
case PROP_THRESHOLD:
|
|
comp->threshold = g_value_get_double (value);
|
|
break;
|
|
case PROP_UPPER:
|
|
comp->upper = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_compare_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstCompare *comp = GST_COMPARE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_META:
|
|
g_value_set_flags (value, comp->meta);
|
|
break;
|
|
case PROP_OFFSET_TS:
|
|
g_value_set_boolean (value, comp->offset_ts);
|
|
break;
|
|
case PROP_METHOD:
|
|
g_value_set_enum (value, comp->method);
|
|
break;
|
|
case PROP_THRESHOLD:
|
|
g_value_set_double (value, comp->threshold);
|
|
break;
|
|
case PROP_UPPER:
|
|
g_value_set_boolean (value, comp->upper);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_compare_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstCompare *comp = GST_COMPARE (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_collect_pads_start (comp->cpads);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_collect_pads_stop (comp->cpads);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
|
|
(element, transition), GST_STATE_CHANGE_SUCCESS);
|
|
if (ret != GST_STATE_CHANGE_SUCCESS)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_compare_reset (comp);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return GST_STATE_CHANGE_SUCCESS;
|
|
}
|