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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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e9297ba3eb
This plugin contains elements for calculating metrics of video streams, intended for objective video codec comparison. At the moment only SSIM metric is implemented (why would you need anything else anyway?). Also contains a helper videomeasure_collector element that collects measurement events and outputs them into a file (to be used with gst-launch). Other metrics may be implemented in the future along with a base class for all measurers. Fixes bug #594321.
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/* GStreamer
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* Copyright (C) <2009> LRN <lrn1986 _at_ gmail _dot_ 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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, 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 "gstvideomeasure.h"
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#include "gstvideomeasure_ssim.h"
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#include "gstvideomeasure_collector.h"
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GstEvent *gst_event_new_measured (guint64 framenumber, GstClockTime timestamp,
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const gchar *metric, const GValue *mean, const GValue *lowest,
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const GValue *highest)
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{
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GstStructure *str = gst_structure_new(
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GST_EVENT_VIDEO_MEASURE,
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"event", G_TYPE_STRING, "frame-measured",
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"offset", G_TYPE_UINT64, framenumber,
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"timestamp", GST_TYPE_CLOCK_TIME, timestamp,
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"metric", G_TYPE_STRING, metric,
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NULL);
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gst_structure_set_value (str, "mean", mean);
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gst_structure_set_value (str, "lowest", lowest);
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gst_structure_set_value (str, "highest", highest);
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return gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, str);
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}
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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gboolean res;
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#if ENABLE_NLS
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GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
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LOCALEDIR);
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bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
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bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
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#endif
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res = gst_element_register (plugin, "ssim", GST_RANK_NONE,
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GST_TYPE_SSIM);
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res &= gst_element_register (plugin, "measurecollector", GST_RANK_NONE,
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GST_TYPE_MEASURE_COLLECTOR);
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return res;
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"videomeasure",
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"Various video measurers",
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plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
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