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a41fb3c6df
This new element allows decoding and overlaying CEA-708 Closed Caption streams over video. * Supports CDP and cc_data closedcaption/x-cea-708 streams * Uses pango to render CC stream * Support GstVideoOverlayComposition meta if downstream supports is Tested on various test files. Remains to be fixed/improved: * Switch to GstByteReader (for code safety) * Switch to GString (instead of manual pango string construction) * Move pango/rendering code outside of main 708 decoder file (so that actual CC parser/decoder can be (re)used in other scenarios). Initial patches and improvements by: * CableLabs RUIH-RI Team <ruihri@cablelabs.com> * Steve Maynard <steve@secondstryke.com> * cjun.wang" <cjun.wang@samsung.com> https://bugzilla.gnome.org/show_bug.cgi?id=704881
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* GStreamer
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* Copyright (C) 2018 Edward Hervey <edward@centricular.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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#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 "gstccextractor.h"
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#include "gstline21dec.h"
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#include "gstceaccoverlay.h"
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static gboolean
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closedcaption_init (GstPlugin * plugin)
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{
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gboolean ret;
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ret = gst_element_register (plugin, "ccextractor", GST_RANK_NONE,
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GST_TYPE_CCEXTRACTOR);
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ret &= gst_element_register (plugin, "line21decoder", GST_RANK_NONE,
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GST_TYPE_LINE21DECODER);
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ret = gst_element_register (plugin, "cc708overlay", GST_RANK_PRIMARY,
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GST_TYPE_CEA_CC_OVERLAY);
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return ret;
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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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closedcaption,
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"Closed Caption elements",
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closedcaption_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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