mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 04:01:08 +00:00
overlays text of the current timestamp
Original commit message from CVS: overlays text of the current timestamp
This commit is contained in:
David Schleef
parent
e22a782729
commit
bfd44accb6
3 changed files with 449 additions and 0 deletions
14
ext/pango/Makefile.am
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14
ext/pango/Makefile.am
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@ -0,0 +1,14 @@
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plugindir = $(libdir)/gstreamer-@GST_MAJORMINOR@
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#PANGO_CFLAGS = -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2
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#PANGO_LDFLAGS = -Wl,--export-dynamic -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0
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plugin_LTLIBRARIES = libgsttimeoverlay.la
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noinst_HEADERS = gsttimeoverlay.h
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libgsttimeoverlay_la_SOURCES = gsttimeoverlay.c
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libgsttimeoverlay_la_CFLAGS = $(GST_CFLAGS) $(PANGO_CFLAGS) -I$(top_srcdir)/gst/videofilter
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libgsttimeoverlay_la_LIBADD =
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libgsttimeoverlay_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(PANGO_LIBS) -lm
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370
ext/pango/gsttimeoverlay.c
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370
ext/pango/gsttimeoverlay.c
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@ -0,0 +1,370 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2003> David Schleef <ds@schleef.org>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* portions derived from:
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* Pango
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* pangoft2topgm.c: Example program to view a UTF-8 encoding file
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* using Pango to render result.
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*
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* Copyright (C) 1999 Red Hat Software
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* Copyright (C) 2001 Sun Microsystems
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*/
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/*#define DEBUG_ENABLED */
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#include <gsttimeoverlay.h>
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#include <pango/pango.h>
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#include <pango/pangoft2.h>
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#include <math.h>
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/* elementfactory information */
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static GstElementDetails timeoverlay_details = {
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"Video Filter Template",
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"Filter/Video",
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"LGPL",
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"Template for a video filter",
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VERSION,
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"David Schleef <ds@schleef.org>",
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"(C) 2003",
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};
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/* GstTimeoverlay signals and args */
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enum {
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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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ARG_0,
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/* FILL ME */
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};
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static void gst_timeoverlay_class_init (GstTimeoverlayClass *klass);
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static void gst_timeoverlay_init (GstTimeoverlay *timeoverlay);
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static void gst_timeoverlay_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_timeoverlay_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gst_timeoverlay_planar411(GstVideofilter *videofilter, void *dest, void *src);
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static void gst_timeoverlay_setup(GstVideofilter *videofilter);
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static GstTimeoverlayClass *this_class = NULL;
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static GstVideofilterClass *parent_class = NULL;
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static GstElementClass *element_class = NULL;
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GType
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gst_timeoverlay_get_type (void)
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{
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static GType timeoverlay_type = 0;
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if (!timeoverlay_type) {
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static const GTypeInfo timeoverlay_info = {
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sizeof(GstTimeoverlayClass), NULL,
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NULL,
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(GClassInitFunc)gst_timeoverlay_class_init,
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NULL,
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NULL,
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sizeof(GstTimeoverlay),
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0,
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(GInstanceInitFunc)gst_timeoverlay_init,
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};
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timeoverlay_type = g_type_register_static(GST_TYPE_VIDEOFILTER, "GstTimeoverlay", &timeoverlay_info, 0);
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}
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return timeoverlay_type;
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}
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static GstVideofilterFormat gst_timeoverlay_formats[] = {
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{ "I420", 12, gst_timeoverlay_planar411, },
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};
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static void
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gst_timeoverlay_class_init (GstTimeoverlayClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstVideofilterClass *gstvideofilter_class;
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int i;
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gobject_class = (GObjectClass*)klass;
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gstelement_class = (GstElementClass*)klass;
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gstvideofilter_class = (GstVideofilterClass *)klass;
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#if 0
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g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_METHOD,
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g_param_spec_enum("method","method","method",
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GST_TYPE_TIMEOVERLAY_METHOD, GST_TIMEOVERLAY_METHOD_90R,
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G_PARAM_READWRITE));
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#endif
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this_class = klass;
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parent_class = g_type_class_ref(GST_TYPE_VIDEOFILTER);
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element_class = g_type_class_ref(GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_timeoverlay_set_property;
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gobject_class->get_property = gst_timeoverlay_get_property;
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gstvideofilter_class->setup = gst_timeoverlay_setup;
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for(i=0;i<G_N_ELEMENTS(gst_timeoverlay_formats);i++){
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gst_videofilter_class_add_format(gstvideofilter_class, gst_timeoverlay_formats + i);
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}
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}
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static GstCaps *gst_timeoverlay_get_capslist(void)
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{
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GstVideofilterClass *klass;
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klass = g_type_class_ref(GST_TYPE_VIDEOFILTER);
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return gst_videofilter_class_get_capslist(klass);
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}
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static GstPadTemplate *
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gst_timeoverlay_src_template_factory(void)
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{
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static GstPadTemplate *templ = NULL;
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if(!templ){
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GstCaps *caps = GST_CAPS_NEW("src","video/raw",
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"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
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caps = gst_caps_intersect(caps, gst_timeoverlay_get_capslist ());
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templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
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}
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return templ;
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}
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static GstPadTemplate *
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gst_timeoverlay_sink_template_factory(void)
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{
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static GstPadTemplate *templ = NULL;
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if(!templ){
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GstCaps *caps = GST_CAPS_NEW("sink","video/raw",
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"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
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caps = gst_caps_intersect(caps, gst_timeoverlay_get_capslist ());
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templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
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}
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return templ;
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}
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static void
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gst_timeoverlay_init (GstTimeoverlay *timeoverlay)
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{
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GstVideofilter *videofilter;
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GST_DEBUG("gst_timeoverlay_init");
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videofilter = GST_VIDEOFILTER(timeoverlay);
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videofilter->sinkpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (gst_timeoverlay_sink_template_factory),
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"sink");
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videofilter->srcpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (gst_timeoverlay_src_template_factory),
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"src");
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gst_videofilter_postinit(GST_VIDEOFILTER(timeoverlay));
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}
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static void
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gst_timeoverlay_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstTimeoverlay *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_TIMEOVERLAY(object));
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src = GST_TIMEOVERLAY(object);
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GST_DEBUG("gst_timeoverlay_set_property");
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switch (prop_id) {
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#if 0
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case ARG_METHOD:
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src->method = g_value_get_enum (value);
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break;
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#endif
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default:
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break;
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}
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}
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static void
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gst_timeoverlay_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstTimeoverlay *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_TIMEOVERLAY(object));
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src = GST_TIMEOVERLAY(object);
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switch (prop_id) {
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#if 0
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case ARG_METHOD:
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g_value_set_enum (value, src->method);
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break;
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#endif
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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 gboolean plugin_init (GModule *module, GstPlugin *plugin)
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{
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GstElementFactory *factory;
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if(!gst_library_load("gstvideofilter"))
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return FALSE;
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/* create an elementfactory for the timeoverlay element */
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factory = gst_element_factory_new("timeoverlay",GST_TYPE_TIMEOVERLAY,
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&timeoverlay_details);
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g_return_val_if_fail(factory != NULL, FALSE);
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gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (gst_timeoverlay_sink_template_factory));
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gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (gst_timeoverlay_src_template_factory));
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
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return TRUE;
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}
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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"timeoverlay",
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plugin_init
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};
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static void gst_timeoverlay_setup(GstVideofilter *videofilter)
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{
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GstTimeoverlay *timeoverlay;
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PangoFontDescription *font_description;
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PangoContext *context;
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g_return_if_fail(GST_IS_TIMEOVERLAY(videofilter));
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timeoverlay = GST_TIMEOVERLAY(videofilter);
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/* if any setup needs to be done, do it here */
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/* what does this affect? */
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context = pango_ft2_get_context (100, 100);
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pango_context_set_language (context, pango_language_from_string ("en_US"));
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pango_context_set_base_dir (context, PANGO_DIRECTION_LTR);
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font_description = pango_font_description_new ();
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pango_font_description_set_family (font_description, g_strdup ("Monospace"));
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pango_font_description_set_style (font_description, PANGO_STYLE_NORMAL);
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pango_font_description_set_variant (font_description, PANGO_VARIANT_NORMAL);
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pango_font_description_set_weight (font_description, PANGO_WEIGHT_NORMAL);
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pango_font_description_set_stretch (font_description, PANGO_STRETCH_NORMAL);
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pango_font_description_set_size (font_description, 12 * PANGO_SCALE);
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pango_context_set_font_description (context, font_description);
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timeoverlay->context = context;
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timeoverlay->font_description = font_description;
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}
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static char *gst_timeoverlay_print_smpte_time(guint64 time)
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{
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int hours;
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int minutes;
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int seconds;
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int ms;
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double x;
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x = rint((time + 500000)*1e-6);
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hours = floor(x/(60*60*1000));
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x -= hours*60*60*1000;
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minutes = floor(x/(60*1000));
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x -= minutes*60*1000;
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seconds = floor(x/(1000));
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x -= seconds*1000;
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ms = rint(x);
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return g_strdup_printf("%02d:%02d:%02d.%03d",hours,minutes,seconds,ms);
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}
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static void gst_timeoverlay_planar411(GstVideofilter *videofilter,
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void *dest, void *src)
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{
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GstTimeoverlay *timeoverlay;
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int height;
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int width;
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PangoRectangle logical_rect;
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PangoLayout *layout;
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int b_height, b_width;
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FT_Bitmap bitmap;
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char *string;
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int i;
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g_return_if_fail(GST_IS_TIMEOVERLAY(videofilter));
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timeoverlay = GST_TIMEOVERLAY(videofilter);
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width = gst_videofilter_get_input_width(videofilter);
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height = gst_videofilter_get_input_height(videofilter);
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layout = pango_layout_new (timeoverlay->context);
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string = gst_timeoverlay_print_smpte_time(GST_BUFFER_TIMESTAMP(videofilter->in_buf));
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pango_layout_set_text (layout, string, strlen(string));
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g_free(string);
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pango_layout_set_alignment (layout, PANGO_ALIGN_LEFT);
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pango_layout_set_width (layout, -1);
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pango_layout_get_extents (layout, NULL, &logical_rect);
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b_height = PANGO_PIXELS (logical_rect.height);
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b_width = PANGO_PIXELS (logical_rect.width);
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//hheight = 20;
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memcpy(dest, src, videofilter->from_buf_size);
|
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|
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for(i=0;i<b_height;i++){
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memset(dest + i*width, 0, b_width);
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}
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for(i=0;i<b_height/2;i++){
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memset(dest + width*height + i*(width/2), 128, b_width/2);
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memset(dest + width*height + (width/2)*(height/2) + i*(width/2), 128,
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b_width/2);
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}
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bitmap.rows = b_height;
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bitmap.width = b_width;
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bitmap.pitch = width;
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bitmap.buffer = dest;
|
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bitmap.num_grays = 256;
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bitmap.pixel_mode = ft_pixel_mode_grays;
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pango_ft2_render_layout (&bitmap, layout, 0, 0);
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}
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65
ext/pango/gsttimeoverlay.h
Normal file
65
ext/pango/gsttimeoverlay.h
Normal file
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@ -0,0 +1,65 @@
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/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
*
|
||||
* 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., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
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*/
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#ifndef __GST_TIMEOVERLAY_H__
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#define __GST_TIMEOVERLAY_H__
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#include <config.h>
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#include <gst/gst.h>
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#include <pango/pango.h>
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#include "gstvideofilter.h"
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G_BEGIN_DECLS
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#define GST_TYPE_TIMEOVERLAY \
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(gst_timeoverlay_get_type())
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#define GST_TIMEOVERLAY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TIMEOVERLAY,GstTimeoverlay))
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#define GST_TIMEOVERLAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TIMEOVERLAY,GstTimeoverlayClass))
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#define GST_IS_TIMEOVERLAY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TIMEOVERLAY))
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#define GST_IS_TIMEOVERLAY_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TIMEOVERLAY))
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typedef struct _GstTimeoverlay GstTimeoverlay;
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typedef struct _GstTimeoverlayClass GstTimeoverlayClass;
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struct _GstTimeoverlay {
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GstVideofilter videofilter;
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|
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PangoFontDescription *font_description;
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PangoContext *context;
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||||
|
||||
};
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||||
|
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struct _GstTimeoverlayClass {
|
||||
GstVideofilterClass parent_class;
|
||||
};
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||||
|
||||
GType gst_timeoverlay_get_type(void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_TIMEOVERLAY_H__ */
|
||||
|
||||
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Reference in a new issue