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timecodestamper: New element to attach SMPTE timecode to buffers
The timecodestamper element attaches a SMPTE timecode to each video buffer. This timecode corresponds to the current stream time. https://bugzilla.gnome.org/show_bug.cgi?id=766419
This commit is contained in:
Vivia Nikolaidou
Sebastian Dröge
parent
de1f42a284
commit
a2c6e2b64a
5 changed files with 535 additions and 0 deletions
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@ -524,6 +524,7 @@ AG_GST_CHECK_PLUGIN(smooth)
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AG_GST_CHECK_PLUGIN(speed)
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AG_GST_CHECK_PLUGIN(speed)
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AG_GST_CHECK_PLUGIN(subenc)
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AG_GST_CHECK_PLUGIN(subenc)
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AG_GST_CHECK_PLUGIN(stereo)
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AG_GST_CHECK_PLUGIN(stereo)
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AG_GST_CHECK_PLUGIN(timecode)
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AG_GST_CHECK_PLUGIN(tta)
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AG_GST_CHECK_PLUGIN(tta)
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AG_GST_CHECK_PLUGIN(videofilters)
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AG_GST_CHECK_PLUGIN(videofilters)
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AG_GST_CHECK_PLUGIN(videomeasure)
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AG_GST_CHECK_PLUGIN(videomeasure)
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@ -3642,6 +3643,7 @@ gst/speed/Makefile
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gst/subenc/Makefile
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gst/subenc/Makefile
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gst/stereo/Makefile
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gst/stereo/Makefile
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gst/tta/Makefile
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gst/tta/Makefile
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gst/timecode/Makefile
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gst/videofilters/Makefile
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gst/videofilters/Makefile
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gst/videomeasure/Makefile
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gst/videomeasure/Makefile
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gst/videoparsers/Makefile
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gst/videoparsers/Makefile
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10
gst/timecode/Makefile.am
Normal file
10
gst/timecode/Makefile.am
Normal file
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@ -0,0 +1,10 @@
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plugin_LTLIBRARIES = libgsttimecode.la
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libgsttimecode_la_SOURCES = plugin.c gsttimecodestamper.c
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libgsttimecode_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
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libgsttimecode_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstvideo-1.0 $(GST_LIBS)
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libgsttimecode_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgsttimecode_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
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noinst_HEADERS = gsttimecodestamper.h
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419
gst/timecode/gsttimecodestamper.c
Normal file
419
gst/timecode/gsttimecodestamper.c
Normal file
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@ -0,0 +1,419 @@
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/*
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* GStreamer
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* Copyright (C) 2016 Vivia Nikolaidou <vivia@toolsonair.com>
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*
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* gsttimecodestamper.c
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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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/**
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* SECTION:element-timecodestamper
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* @short_description: Attach a timecode into incoming video frames
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*
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* This element attaches a timecode into every incoming video frame. It starts
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* counting from the stream time of each segment start, which it converts into
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* a timecode.
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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-1.0 videotestsrc ! timecodestamper ! autovideosink
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* ]|
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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 "gsttimecodestamper.h"
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <stdlib.h>
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#include <string.h>
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GST_DEBUG_CATEGORY_STATIC (timecodestamper_debug);
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#define GST_CAT_DEFAULT timecodestamper_debug
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/* GstTimeCodeStamper properties */
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enum
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{
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PROP_0,
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PROP_OVERRIDE_EXISTING,
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PROP_DROP_FRAME,
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PROP_SOURCE_CLOCK,
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PROP_DAILY_JAM
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};
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#define DEFAULT_OVERRIDE_EXISTING FALSE
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#define DEFAULT_DROP_FRAME FALSE
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#define DEFAULT_SOURCE_CLOCK NULL
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#define DEFAULT_DAILY_JAM NULL
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static GstStaticPadTemplate gst_timecodestamper_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 ("video/x-raw")
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);
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static GstStaticPadTemplate gst_timecodestamper_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 ("video/x-raw")
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);
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static void gst_timecodestamper_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_timecodestamper_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_timecodestamper_dispose (GObject * object);
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static gboolean gst_timecodestamper_sink_event (GstBaseTransform * trans,
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GstEvent * event);
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static GstFlowReturn gst_timecodestamper_transform_ip (GstBaseTransform *
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vfilter, GstBuffer * buffer);
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static gboolean gst_timecodestamper_stop (GstBaseTransform * trans);
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G_DEFINE_TYPE (GstTimeCodeStamper, gst_timecodestamper,
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GST_TYPE_BASE_TRANSFORM);
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static void
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gst_timecodestamper_class_init (GstTimeCodeStamperClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *element_class = (GstElementClass *) klass;
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GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
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GST_DEBUG_CATEGORY_INIT (timecodestamper_debug, "timecodestamper", 0,
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"timecodestamper");
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gst_element_class_set_static_metadata (element_class, "Timecode stamper",
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"Filter/Video", "Attaches a timecode meta into each video frame",
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"Vivia Nikolaidou <vivia@toolsonair.com");
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gobject_class->set_property = gst_timecodestamper_set_property;
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gobject_class->get_property = gst_timecodestamper_get_property;
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gobject_class->dispose = gst_timecodestamper_dispose;
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g_object_class_install_property (gobject_class, PROP_OVERRIDE_EXISTING,
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g_param_spec_boolean ("override-existing", "Override existing timecode",
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"If set to true, any existing timecode will be overridden",
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DEFAULT_OVERRIDE_EXISTING,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_DROP_FRAME,
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g_param_spec_boolean ("drop-frame", "Override existing timecode",
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"Use drop-frame timecodes for 29.97 and 59.94 FPS",
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DEFAULT_DROP_FRAME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SOURCE_CLOCK,
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g_param_spec_object ("source-clock",
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"Source clock to use for first timecode",
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"If unset, the timecode will refer to the stream time",
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GST_TYPE_CLOCK, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_DAILY_JAM,
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g_param_spec_boxed ("daily-jam",
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"Daily jam",
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"The daily jam of the timecode",
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G_TYPE_DATE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_timecodestamper_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_timecodestamper_src_template));
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trans_class->sink_event = GST_DEBUG_FUNCPTR (gst_timecodestamper_sink_event);
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trans_class->stop = GST_DEBUG_FUNCPTR (gst_timecodestamper_stop);
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trans_class->transform_ip =
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GST_DEBUG_FUNCPTR (gst_timecodestamper_transform_ip);
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}
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static void
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gst_timecodestamper_init (GstTimeCodeStamper * timecodestamper)
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{
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timecodestamper->override_existing = DEFAULT_OVERRIDE_EXISTING;
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timecodestamper->drop_frame = DEFAULT_DROP_FRAME;
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timecodestamper->source_clock = DEFAULT_SOURCE_CLOCK;
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timecodestamper->current_tc = gst_video_time_code_new_empty ();
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timecodestamper->current_tc->config.latest_daily_jam = DEFAULT_DAILY_JAM;
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}
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static void
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gst_timecodestamper_dispose (GObject * object)
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{
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GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (object);
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if (timecodestamper->current_tc != NULL) {
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gst_video_time_code_free (timecodestamper->current_tc);
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timecodestamper->current_tc = NULL;
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}
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if (timecodestamper->source_clock) {
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gst_object_unref (timecodestamper->source_clock);
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timecodestamper->source_clock = NULL;
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}
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G_OBJECT_CLASS (gst_timecodestamper_parent_class)->dispose (object);
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}
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static void
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gst_timecodestamper_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (object);
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switch (prop_id) {
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case PROP_OVERRIDE_EXISTING:
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timecodestamper->override_existing = g_value_get_boolean (value);
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break;
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case PROP_DROP_FRAME:
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timecodestamper->drop_frame = g_value_get_boolean (value);
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break;
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case PROP_SOURCE_CLOCK:
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if (timecodestamper->source_clock)
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gst_object_unref (timecodestamper->source_clock);
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timecodestamper->source_clock = g_value_dup_object (value);
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break;
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case PROP_DAILY_JAM:
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if (timecodestamper->current_tc->config.latest_daily_jam)
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g_date_time_unref (timecodestamper->current_tc->
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config.latest_daily_jam);
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timecodestamper->current_tc->config.latest_daily_jam =
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g_value_dup_boxed (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_timecodestamper_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (object);
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switch (prop_id) {
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case PROP_OVERRIDE_EXISTING:
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g_value_set_boolean (value, timecodestamper->override_existing);
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break;
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case PROP_DROP_FRAME:
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g_value_set_boolean (value, timecodestamper->drop_frame);
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break;
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case PROP_SOURCE_CLOCK:
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g_value_set_object (value, timecodestamper->source_clock);
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break;
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case PROP_DAILY_JAM:
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g_value_set_boxed (value,
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timecodestamper->current_tc->config.latest_daily_jam);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_timecodestamper_set_drop_frame (GstTimeCodeStamper * timecodestamper)
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{
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if (timecodestamper->drop_frame && timecodestamper->vinfo.fps_d == 1001 &&
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(timecodestamper->vinfo.fps_n == 30000 ||
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timecodestamper->vinfo.fps_d == 60000))
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timecodestamper->current_tc->config.flags |=
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GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME;
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else
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timecodestamper->current_tc->config.flags &=
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~GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME;
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}
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static gboolean
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gst_timecodestamper_stop (GstBaseTransform * trans)
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{
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GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (trans);
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gst_video_info_init (&timecodestamper->vinfo);
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return TRUE;
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}
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/* Must be called with object lock */
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static void
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gst_timecodestamper_reset_timecode (GstTimeCodeStamper * timecodestamper)
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{
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GDateTime *jam = NULL;
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if (timecodestamper->current_tc->config.latest_daily_jam)
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jam =
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g_date_time_ref (timecodestamper->current_tc->config.latest_daily_jam);
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gst_video_time_code_clear (timecodestamper->current_tc);
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/* FIXME: What if the buffer doesn't contain both top and bottom fields? */
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gst_video_time_code_init (timecodestamper->current_tc,
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timecodestamper->vinfo.fps_n,
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timecodestamper->vinfo.fps_d,
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jam,
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timecodestamper->vinfo.interlace_mode ==
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GST_VIDEO_INTERLACE_MODE_PROGRESSIVE ? 0 :
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GST_VIDEO_TIME_CODE_FLAGS_INTERLACED, 0, 0, 0, 0, 0);
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gst_timecodestamper_set_drop_frame (timecodestamper);
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}
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static gboolean
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gst_timecodestamper_sink_event (GstBaseTransform * trans, GstEvent * event)
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{
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gboolean ret = FALSE;
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GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (trans);
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GST_DEBUG_OBJECT (trans, "received event %" GST_PTR_FORMAT, event);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEGMENT:
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{
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GstSegment segment;
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guint64 frames;
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gchar *tc_str;
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GST_OBJECT_LOCK (timecodestamper);
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if (timecodestamper->source_clock != NULL) {
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GST_OBJECT_UNLOCK (timecodestamper);
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break;
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}
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gst_event_copy_segment (event, &segment);
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if (segment.format != GST_FORMAT_TIME) {
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GST_OBJECT_UNLOCK (timecodestamper);
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GST_ERROR_OBJECT (timecodestamper, "Invalid segment format");
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return FALSE;
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}
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if (GST_VIDEO_INFO_FORMAT (&timecodestamper->vinfo) ==
|
||||||
|
GST_VIDEO_FORMAT_UNKNOWN) {
|
||||||
|
GST_ERROR_OBJECT (timecodestamper,
|
||||||
|
"Received segment event without caps");
|
||||||
|
GST_OBJECT_UNLOCK (timecodestamper);
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
frames =
|
||||||
|
gst_util_uint64_scale (segment.time, timecodestamper->vinfo.fps_n,
|
||||||
|
timecodestamper->vinfo.fps_d * GST_SECOND);
|
||||||
|
gst_timecodestamper_reset_timecode (timecodestamper);
|
||||||
|
gst_video_time_code_add_frames (timecodestamper->current_tc, frames);
|
||||||
|
GST_DEBUG_OBJECT (timecodestamper,
|
||||||
|
"Got %" G_GUINT64_FORMAT " frames when segment time is %"
|
||||||
|
GST_TIME_FORMAT, frames, GST_TIME_ARGS (segment.time));
|
||||||
|
tc_str = gst_video_time_code_to_string (timecodestamper->current_tc);
|
||||||
|
GST_DEBUG_OBJECT (timecodestamper, "New timecode is %s", tc_str);
|
||||||
|
g_free (tc_str);
|
||||||
|
GST_OBJECT_UNLOCK (timecodestamper);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
case GST_EVENT_CAPS:
|
||||||
|
{
|
||||||
|
GstCaps *caps;
|
||||||
|
|
||||||
|
GST_OBJECT_LOCK (timecodestamper);
|
||||||
|
gst_event_parse_caps (event, &caps);
|
||||||
|
if (!gst_video_info_from_caps (&timecodestamper->vinfo, caps)) {
|
||||||
|
GST_OBJECT_UNLOCK (timecodestamper);
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
gst_timecodestamper_reset_timecode (timecodestamper);
|
||||||
|
GST_OBJECT_UNLOCK (timecodestamper);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
ret =
|
||||||
|
GST_BASE_TRANSFORM_CLASS (gst_timecodestamper_parent_class)->sink_event
|
||||||
|
(trans, event);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static GstFlowReturn
|
||||||
|
gst_timecodestamper_transform_ip (GstBaseTransform * vfilter,
|
||||||
|
GstBuffer * buffer)
|
||||||
|
{
|
||||||
|
GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (vfilter);
|
||||||
|
GstClockTime ref_time;
|
||||||
|
|
||||||
|
GST_OBJECT_LOCK (timecodestamper);
|
||||||
|
if (gst_buffer_get_video_time_code_meta (buffer)
|
||||||
|
&& timecodestamper->override_existing == FALSE) {
|
||||||
|
GST_OBJECT_UNLOCK (timecodestamper);
|
||||||
|
return GST_FLOW_OK;
|
||||||
|
}
|
||||||
|
if (timecodestamper->source_clock != NULL) {
|
||||||
|
if (timecodestamper->current_tc->hours == 0
|
||||||
|
&& timecodestamper->current_tc->minutes == 0
|
||||||
|
&& timecodestamper->current_tc->seconds == 0
|
||||||
|
&& timecodestamper->current_tc->frames == 0) {
|
||||||
|
guint64 hours, minutes, seconds, frames;
|
||||||
|
/* Daily jam time */
|
||||||
|
|
||||||
|
ref_time = gst_clock_get_time (timecodestamper->source_clock);
|
||||||
|
ref_time = ref_time % (24 * 60 * 60 * GST_SECOND);
|
||||||
|
hours = ref_time / (GST_SECOND * 60 * 60);
|
||||||
|
ref_time -= hours * GST_SECOND * 60 * 60;
|
||||||
|
minutes = ref_time / (GST_SECOND * 60);
|
||||||
|
ref_time -= minutes * GST_SECOND * 60;
|
||||||
|
seconds = ref_time / GST_SECOND;
|
||||||
|
ref_time -= seconds * GST_SECOND;
|
||||||
|
/* Converting to frames for the whole ref_time might be inaccurate in case
|
||||||
|
* we have a drop frame timecode */
|
||||||
|
frames = gst_util_uint64_scale (ref_time, timecodestamper->vinfo.fps_n,
|
||||||
|
timecodestamper->vinfo.fps_d * GST_SECOND);
|
||||||
|
|
||||||
|
GST_DEBUG_OBJECT (timecodestamper,
|
||||||
|
"Initializing with %" G_GUINT64_FORMAT ":%" G_GUINT64_FORMAT ":%"
|
||||||
|
G_GUINT64_FORMAT ":%" G_GUINT64_FORMAT "", hours, minutes, seconds,
|
||||||
|
frames);
|
||||||
|
gst_video_time_code_init (timecodestamper->current_tc,
|
||||||
|
timecodestamper->vinfo.fps_n,
|
||||||
|
timecodestamper->vinfo.fps_d,
|
||||||
|
NULL,
|
||||||
|
timecodestamper->vinfo.interlace_mode ==
|
||||||
|
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE ? 0 :
|
||||||
|
GST_VIDEO_TIME_CODE_FLAGS_INTERLACED, hours, minutes, seconds, 0, 0);
|
||||||
|
gst_timecodestamper_set_drop_frame (timecodestamper);
|
||||||
|
/* Do not use frames when initializing because maybe we have drop frame */
|
||||||
|
gst_video_time_code_add_frames (timecodestamper->current_tc, frames);
|
||||||
|
}
|
||||||
|
} else if (timecodestamper->source_clock == NULL) {
|
||||||
|
GstClockTime timecode_time;
|
||||||
|
|
||||||
|
timecode_time =
|
||||||
|
gst_video_time_code_nsec_since_daily_jam (timecodestamper->current_tc);
|
||||||
|
ref_time =
|
||||||
|
gst_segment_to_stream_time (&vfilter->segment, GST_FORMAT_TIME,
|
||||||
|
buffer->pts);
|
||||||
|
if (timecode_time != GST_CLOCK_TIME_NONE && ref_time != GST_CLOCK_TIME_NONE
|
||||||
|
&& ((timecode_time > ref_time && timecode_time - ref_time > GST_SECOND)
|
||||||
|
|| (ref_time > timecode_time
|
||||||
|
&& ref_time - timecode_time > GST_SECOND))) {
|
||||||
|
gchar *tc_str =
|
||||||
|
gst_video_time_code_to_string (timecodestamper->current_tc);
|
||||||
|
GST_WARNING_OBJECT (timecodestamper,
|
||||||
|
"Time code %s (stream time %" GST_TIME_FORMAT
|
||||||
|
") has drifted more than one second from stream time %"
|
||||||
|
GST_TIME_FORMAT, tc_str, GST_TIME_ARGS (timecode_time),
|
||||||
|
GST_TIME_ARGS (ref_time));
|
||||||
|
g_free (tc_str);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
gst_buffer_add_video_time_code_meta (buffer, timecodestamper->current_tc);
|
||||||
|
gst_video_time_code_increment_frame (timecodestamper->current_tc);
|
||||||
|
GST_OBJECT_UNLOCK (timecodestamper);
|
||||||
|
return GST_FLOW_OK;
|
||||||
|
}
|
||||||
64
gst/timecode/gsttimecodestamper.h
Normal file
64
gst/timecode/gsttimecodestamper.h
Normal file
|
|
@ -0,0 +1,64 @@
|
||||||
|
/*
|
||||||
|
* GStreamer
|
||||||
|
* Copyright (C) 2016 Vivia Nikolaidou <vivia@toolsonair.com>
|
||||||
|
*
|
||||||
|
* gsttimecodestamper.h
|
||||||
|
*
|
||||||
|
* This library is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Library General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This library is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Library General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Library General Public
|
||||||
|
* License along with this library; if not, write to the
|
||||||
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
||||||
|
* Boston, MA 02110-1301, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __GST_TIME_CODE_STAMPER_H__
|
||||||
|
#define __GST_TIME_CODE_STAMPER_H__
|
||||||
|
|
||||||
|
#include <gst/gst.h>
|
||||||
|
#include <gst/video/video.h>
|
||||||
|
|
||||||
|
#define GST_TYPE_TIME_CODE_STAMPER (gst_timecodestamper_get_type())
|
||||||
|
#define GST_TIME_CODE_STAMPER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TIME_CODE_STAMPER,GstTimeCodeStamper))
|
||||||
|
#define GST_TIME_CODE_STAMPER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_TIME_CODE_STAMPER,GstTimeCodeStamperClass))
|
||||||
|
#define GST_TIME_CODE_STAMPER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_TIME_CODE_STAMPER,GstTimeCodeStamperClass))
|
||||||
|
#define GST_IS_TIME_CODE_STAMPER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TIME_CODE_STAMPER))
|
||||||
|
#define GST_IS_TIME_CODE_STAMPER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_TIME_CODE_STAMPER))
|
||||||
|
|
||||||
|
typedef struct _GstTimeCodeStamper GstTimeCodeStamper;
|
||||||
|
typedef struct _GstTimeCodeStamperClass GstTimeCodeStamperClass;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* GstTimeCodeStamper:
|
||||||
|
*
|
||||||
|
* Opaque data structure.
|
||||||
|
*/
|
||||||
|
struct _GstTimeCodeStamper
|
||||||
|
{
|
||||||
|
GstBaseTransform videofilter;
|
||||||
|
|
||||||
|
/* < private > */
|
||||||
|
gboolean override_existing;
|
||||||
|
gboolean drop_frame;
|
||||||
|
GstVideoTimeCode *current_tc;
|
||||||
|
GstVideoInfo vinfo;
|
||||||
|
GstClock *source_clock;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct _GstTimeCodeStamperClass
|
||||||
|
{
|
||||||
|
GstBaseTransformClass parent_class;
|
||||||
|
};
|
||||||
|
|
||||||
|
GType gst_timecodestamper_get_type (void);
|
||||||
|
|
||||||
|
G_END_DECLS
|
||||||
|
#endif /* __GST_TIME_CODE_STAMPER_H__ */
|
||||||
40
gst/timecode/plugin.c
Normal file
40
gst/timecode/plugin.c
Normal file
|
|
@ -0,0 +1,40 @@
|
||||||
|
/*
|
||||||
|
* GStreamer
|
||||||
|
* Copyright (C) 2016 Vivia Nikolaidou <vivia@toolsonair.com>
|
||||||
|
*
|
||||||
|
* plugin.c
|
||||||
|
*
|
||||||
|
* This library is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Library General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This library is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Library General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Library General Public
|
||||||
|
* License along with this library; if not, write to the
|
||||||
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
||||||
|
* Boston, MA 02110-1301, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
#include "config.h"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include "gsttimecodestamper.h"
|
||||||
|
|
||||||
|
static gboolean
|
||||||
|
plugin_init (GstPlugin * plugin)
|
||||||
|
{
|
||||||
|
return gst_element_register (plugin, "timecodestamper", GST_RANK_NONE,
|
||||||
|
GST_TYPE_TIME_CODE_STAMPER);
|
||||||
|
}
|
||||||
|
|
||||||
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
||||||
|
GST_VERSION_MINOR,
|
||||||
|
timecode,
|
||||||
|
"Timecode-related elements",
|
||||||
|
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
|
||||||
Loading…
Reference in a new issue