videomaxrate: Import plugin
Import plugin from PsiMedia, based on my work
This commit is contained in:
Olivier Crête
parent
c470918903
commit
599027fe24
@ -317,6 +317,7 @@ 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(tta)
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AG_GST_CHECK_PLUGIN(tta)
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AG_GST_CHECK_PLUGIN(valve)
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AG_GST_CHECK_PLUGIN(valve)
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AG_GST_CHECK_PLUGIN(videomaxrate)
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AG_GST_CHECK_PLUGIN(videomeasure)
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AG_GST_CHECK_PLUGIN(videomeasure)
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AG_GST_CHECK_PLUGIN(videosignal)
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AG_GST_CHECK_PLUGIN(videosignal)
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AG_GST_CHECK_PLUGIN(vmnc)
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AG_GST_CHECK_PLUGIN(vmnc)
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@ -1710,6 +1711,7 @@ 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/valve/Makefile
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gst/valve/Makefile
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gst/videomaxrate/Makefile
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gst/videomeasure/Makefile
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gst/videomeasure/Makefile
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gst/videosignal/Makefile
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gst/videosignal/Makefile
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gst/vmnc/Makefile
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gst/vmnc/Makefile
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11
gst/videomaxrate/Makefile.am
Normal file
11
gst/videomaxrate/Makefile.am
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@ -0,0 +1,11 @@
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plugin_LTLIBRARIES = libgstvideomaxrate.la
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libgstvideomaxrate_la_SOURCES = videomaxrate.c
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noinst_HEADERS = videomaxrate.h
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libgstvideomaxrate_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
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libgstvideomaxrate_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) \
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$(GST_LIBS)
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libgstvideomaxrate_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstvideomaxrate_la_LIBTOOLFLAGS = --tag=disable-static
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190
gst/videomaxrate/videomaxrate.c
Normal file
190
gst/videomaxrate/videomaxrate.c
Normal file
@ -0,0 +1,190 @@
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/*
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* GStreamer - limit video rate
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*
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* Copyright 2008 Barracuda Networks, Inc.
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*
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* Copyright 2009 Nokia Corporation
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* Copyright 2009 Collabora Ltd,
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* @contact: Olivier Crete <olivier.crete@collabora.co.uk>
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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 WITHANY 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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*
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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, Boston, MA
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* 02110-1301 USA
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*
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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 "videomaxrate.h"
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static GstStaticPadTemplate gst_video_max_rate_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-yuv; video/x-raw-rgb")
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);
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static GstStaticPadTemplate gst_video_max_rate_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-yuv; video/x-raw-rgb")
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);
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static gboolean gst_video_max_rate_sink_event (GstPad * pad, GstEvent * event);
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static GstCaps *gst_video_max_rate_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps);
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static gboolean gst_video_max_rate_set_caps (GstBaseTransform * trans,
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GstCaps * incaps, GstCaps * outcaps);
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static GstFlowReturn gst_video_max_rate_transform_ip (GstBaseTransform * trans,
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GstBuffer * buf);
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GST_BOILERPLATE (GstVideoMaxRate, gst_video_max_rate, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM);
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static void
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gst_video_max_rate_base_init (gpointer gclass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
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gst_element_class_set_details_simple (element_class,
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"Video maximum rate adjuster",
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"Filter/Effect/Video",
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"Drops extra frames", "Justin Karneges <justin@affinix.com>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_video_max_rate_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_video_max_rate_src_template));
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}
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static void
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gst_video_max_rate_class_init (GstVideoMaxRateClass * klass)
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{
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GstBaseTransformClass *base_class = GST_BASE_TRANSFORM_CLASS (klass);
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base_class->transform_caps = gst_video_max_rate_transform_caps;
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base_class->set_caps = gst_video_max_rate_set_caps;
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base_class->transform_ip = gst_video_max_rate_transform_ip;
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}
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static void
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gst_video_max_rate_init (GstVideoMaxRate * videomaxrate,
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GstVideoMaxRateClass * gclass)
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{
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videomaxrate->to_rate_numerator = -1;
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videomaxrate->to_rate_denominator = -1;
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videomaxrate->have_last_ts = FALSE;
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gst_pad_set_event_function (GST_BASE_TRANSFORM_SINK_PAD (videomaxrate),
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gst_video_max_rate_sink_event);
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}
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gboolean
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gst_video_max_rate_sink_event (GstPad * pad, GstEvent * event)
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{
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GstVideoMaxRate *videomaxrate = GST_VIDEO_MAX_RATE (gst_pad_get_parent (pad));
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gboolean ret;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_NEWSEGMENT:
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case GST_EVENT_FLUSH_STOP:
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videomaxrate->have_last_ts = FALSE;
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break;
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default:
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break;
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}
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ret = gst_pad_push_event (GST_BASE_TRANSFORM_SRC_PAD (videomaxrate), event);
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gst_object_unref (videomaxrate);
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return ret;
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}
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GstCaps *
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gst_video_max_rate_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps)
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{
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GstCaps *ret;
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GstStructure *structure;
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/* this function is always called with a simple caps */
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g_return_val_if_fail (GST_CAPS_IS_SIMPLE (caps), NULL);
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ret = gst_caps_copy (caps);
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/* set the framerate as a range */
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structure = gst_structure_copy (gst_caps_get_structure (ret, 0));
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gst_structure_set (structure, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1,
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G_MAXINT, 1, NULL);
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gst_caps_merge_structure (ret, gst_structure_copy (structure));
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gst_structure_free (structure);
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return ret;
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}
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gboolean
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gst_video_max_rate_set_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps)
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{
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GstVideoMaxRate *videomaxrate = GST_VIDEO_MAX_RATE (trans);
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GstStructure *cs;
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gint numerator, denominator;
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// keep track of the outbound framerate
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cs = gst_caps_get_structure (outcaps, 0);
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if (!gst_structure_get_fraction (cs, "framerate", &numerator, &denominator))
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return FALSE;
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videomaxrate->to_rate_numerator = numerator;
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videomaxrate->to_rate_denominator = denominator;
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return TRUE;
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}
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GstFlowReturn
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gst_video_max_rate_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
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{
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GstVideoMaxRate *videomaxrate = GST_VIDEO_MAX_RATE (trans);
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GstClockTime ts = GST_BUFFER_TIMESTAMP (buf);
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/* drop frames if they exceed our output rate */
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if (videomaxrate->have_last_ts) {
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if (ts < videomaxrate->last_ts + gst_util_uint64_scale (1,
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videomaxrate->to_rate_denominator * GST_SECOND,
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videomaxrate->to_rate_numerator)) {
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return GST_BASE_TRANSFORM_FLOW_DROPPED;
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}
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}
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videomaxrate->last_ts = ts;
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videomaxrate->have_last_ts = TRUE;
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return GST_FLOW_OK;
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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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return gst_element_register (plugin, "videomaxrate", GST_RANK_NONE,
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GST_TYPE_VIDEO_MAX_RATE);
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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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"videomaxrate",
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"Drop extra frames",
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plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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64
gst/videomaxrate/videomaxrate.h
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64
gst/videomaxrate/videomaxrate.h
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@ -0,0 +1,64 @@
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/*
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* Copyright (C) 2008 Barracuda Networks, Inc.
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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 WITHANY 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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*
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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, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __GST_VIDEOMAXRATE_H__
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#define __GST_VIDEOMAXRATE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_MAX_RATE \
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(gst_video_max_rate_get_type())
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#define GST_VIDEO_MAX_RATE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_MAX_RATE,GstVideoMaxRate))
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#define GST_VIDEO_MAX_RATE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_MAX_RATE, \
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GstVideoMaxRateClass))
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#define GST_IS_VIDEO_MAX_RATE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_MAX_RATE))
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#define GST_IS_VIDEO_MAX_RATE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_MAX_RATE))
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typedef struct _GstVideoMaxRate GstVideoMaxRate;
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typedef struct _GstVideoMaxRateClass GstVideoMaxRateClass;
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struct _GstVideoMaxRate
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{
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GstBaseTransform parent;
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gint to_rate_numerator;
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gint to_rate_denominator;
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gboolean have_last_ts;
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GstClockTime last_ts;
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};
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struct _GstVideoMaxRateClass
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{
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GstBaseTransformClass parent_class;
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};
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GType gst_video_max_rate_get_type(void);
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G_END_DECLS
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#endif /* __GST_VIDEOMAXRATE_H__ */
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