mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-03 09:12:19 +00:00
Found this in my local tree. Looks cool, so I'm checking it in. Seems to be some sort of video overlay element.
Original commit message from CVS: Found this in my local tree. Looks cool, so I'm checking it in. Seems to be some sort of video overlay element.
This commit is contained in:
David Schleef
parent
77bb615645
commit
fc44c4515c
3 changed files with 480 additions and 0 deletions
14
gst/overlay/Makefile.am
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14
gst/overlay/Makefile.am
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@ -0,0 +1,14 @@
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plugindir = $(libdir)/gstreamer-@GST_MAJORMINOR@
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plugin_LTLIBRARIES = libgstoverlay.la
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libgstoverlay_la_SOURCES = gstoverlay.c
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noinst_HEADERS = gstoverlay.h
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libgstoverlay_la_CFLAGS = $(GST_CFLAGS)
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libgstoverlay_la_LIBADD =
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libgstoverlay_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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EXTRA_DIST =
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399
gst/overlay/gstoverlay.c
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399
gst/overlay/gstoverlay.c
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@ -0,0 +1,399 @@
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstoverlay.h"
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/* elementfactory information */
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static GstElementDetails overlay_details = {
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"Video Overlay",
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"Filter/Video",
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"LGPL",
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"Overlay multiple video streams",
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VERSION,
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"David Schleef <ds@schleef.org>",
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"(C) 2002, 2003",
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};
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GST_PAD_TEMPLATE_FACTORY (overlay_src_factory,
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"overlay_src",
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"video/x-raw-yuv",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
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)
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)
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GST_PAD_TEMPLATE_FACTORY (overlay_sink1_factory,
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"sink1",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"overlay_sink1",
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"video/x-raw-yuv",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
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)
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)
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GST_PAD_TEMPLATE_FACTORY (overlay_sink2_factory,
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"sink2",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"overlay_sink2",
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"video/x-raw-yuv",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
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)
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)
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GST_PAD_TEMPLATE_FACTORY (overlay_sink3_factory,
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"sink3",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"overlay_sink2",
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"video/x-raw-yuv",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (1, G_MAXINT),
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"framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
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)
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)
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/* OVERLAY 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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};
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static void gst_overlay_class_init (GstOverlayClass *klass);
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static void gst_overlay_init (GstOverlay *overlay);
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static void gst_overlay_loop (GstElement *element);
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static void gst_overlay_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec);
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static void gst_overlay_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_overlay_signals[LAST_SIGNAL] = { 0 }; */
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static GType
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gst_overlay_get_type (void)
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{
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static GType overlay_type = 0;
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if (!overlay_type) {
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static const GTypeInfo overlay_info = {
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sizeof(GstOverlayClass),
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NULL,
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NULL,
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(GClassInitFunc)gst_overlay_class_init,
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NULL,
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NULL,
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sizeof(GstOverlay),
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0,
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(GInstanceInitFunc)gst_overlay_init,
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};
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overlay_type = g_type_register_static(GST_TYPE_ELEMENT, "GstOverlay", &overlay_info, 0);
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}
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return overlay_type;
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}
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static void
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gst_overlay_class_init (GstOverlayClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass*)klass;
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gstelement_class = (GstElementClass*)klass;
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_overlay_set_property;
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gobject_class->get_property = gst_overlay_get_property;
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}
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#if 0
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static GstCaps *gst_overlay_getcaps(GstPad *pad)
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{
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GstCaps *caps;
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GstOverlay *overlay;
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overlay = GST_OVERLAY (gst_pad_get_parent (pad));
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if(overlay->width && overlay->height){
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caps = GST_CAPS_NEW (
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"overlay_sink2",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT (overlay->width),
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"height", GST_PROPS_INT (overlay->height)
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);
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}else{
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caps = GST_CAPS_NEW (
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"overlay_sink2",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT_RANGE (0, 4096),
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"height", GST_PROPS_INT_RANGE (0, 4096)
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);
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}
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return caps;
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}
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#endif
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static gboolean
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gst_overlay_sinkconnect (GstPad *pad, GstCaps *caps)
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{
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GstOverlay *overlay;
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overlay = GST_OVERLAY (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps))
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return GST_PAD_LINK_DELAYED;
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gst_caps_get_int (caps, "width", &overlay->width);
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gst_caps_get_int (caps, "height", &overlay->height);
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gst_caps_get_float (caps, "framerate", &overlay->framerate);
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/* forward to the next plugin */
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return gst_pad_try_set_caps(overlay->srcpad, gst_caps_copy_1(caps));
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}
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static void
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gst_overlay_init (GstOverlay *overlay)
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{
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overlay->sinkpad1 = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (overlay_sink1_factory), "sink1");
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gst_pad_set_link_function (overlay->sinkpad1, gst_overlay_sinkconnect);
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gst_element_add_pad (GST_ELEMENT (overlay), overlay->sinkpad1);
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overlay->sinkpad2 = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (overlay_sink2_factory), "sink2");
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gst_pad_set_link_function (overlay->sinkpad2, gst_overlay_sinkconnect);
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gst_element_add_pad (GST_ELEMENT (overlay), overlay->sinkpad2);
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overlay->sinkpad3 = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (overlay_sink3_factory), "sink3");
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gst_pad_set_link_function (overlay->sinkpad3, gst_overlay_sinkconnect);
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gst_element_add_pad (GST_ELEMENT (overlay), overlay->sinkpad3);
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overlay->srcpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (overlay_src_factory), "src");
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gst_element_add_pad (GST_ELEMENT (overlay), overlay->srcpad);
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gst_element_set_loop_function (GST_ELEMENT (overlay), gst_overlay_loop);
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}
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static void
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gst_overlay_blend_i420 (guint8 *out, guint8 *in1, guint8 *in2, guint8 *in3,
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gint width, gint height)
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{
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int mask;
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int i, j;
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guint8 *in1u, *in1v, *in2u, *in2v, *outu, *outv;
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int lumsize;
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int chromsize;
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int width2 = width/2;
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int height2 = height/2;
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lumsize = width * height;
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chromsize = width2 * height2;
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in1u = in1 + lumsize; in1v = in1u + chromsize;
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in2u = in2 + lumsize; in2v = in2u + chromsize;
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outu = out + lumsize; outv = outu + chromsize;
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for (i = 0; i < height; i++) {
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for (j = 0; j < width; j++) {
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mask = in3[i*width + j];
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out[i*width+j] = ((in1[i*width+j] * mask) +
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(in2[i*width+j] * (255 - mask))) >> 8;
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}
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}
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for (i = 0; i < height/2; i++) {
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for (j = 0; j < width/2; j++) {
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mask = (in3[(i*2)*width + (j*2)] + in3[(i*2 + 1)*width + (j*2)] +
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in3[(i*2)*width + (j*2 + 1)] + in3[(i*2 + 1)*width + (j*2 + 1)]) / 4;
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outu[i*width2 + j] = ((in1u[i*width2+j] * mask) +
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(in2u[i*width2 + j] * (255 - mask))) >> 8;
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outv[i*width2 + j] = ((in1v[i*width2+j] * mask) +
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(in2v[i*width2 + j] * (255 - mask))) >> 8;
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}
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}
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}
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static void
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gst_overlay_loop (GstElement *element)
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{
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GstOverlay *overlay;
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GstBuffer *out;
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GstBuffer *in1 = NULL, *in2 = NULL, *in3 = NULL;
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int size;
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overlay = GST_OVERLAY (element);
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in1 = gst_pad_pull (overlay->sinkpad1);
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if (GST_IS_EVENT (in1)) {
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gst_pad_push (overlay->srcpad, in1);
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/* FIXME */
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return;
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}
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in2 = gst_pad_pull (overlay->sinkpad2);
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if (GST_IS_EVENT (in2)) {
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gst_pad_push (overlay->srcpad, in2);
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/* FIXME */
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return;
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}
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in3 = gst_pad_pull (overlay->sinkpad3);
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if (GST_IS_EVENT (in3)) {
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gst_pad_push (overlay->srcpad, in3);
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/* FIXME */
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return;
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}
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g_return_if_fail(in1 != NULL);
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g_return_if_fail(in2 != NULL);
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g_return_if_fail(in3 != NULL);
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size = (overlay->width * overlay->height * 3)/2;
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g_return_if_fail(GST_BUFFER_SIZE(in1) != size);
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g_return_if_fail(GST_BUFFER_SIZE(in2) != size);
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g_return_if_fail(GST_BUFFER_SIZE(in3) != size);
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out = gst_buffer_new_and_alloc (size);
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if (!GST_PAD_CAPS (overlay->srcpad)) {
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if (!gst_pad_try_set_caps (overlay->srcpad,
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GST_CAPS_NEW (
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"overlay_srccaps",
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"video/x-raw-yuv",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT (overlay->width),
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"height", GST_PROPS_INT (overlay->height),
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"framerate",GST_PROPS_FLOAT (overlay->framerate)
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)))
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{
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gst_element_error (element, "cannot set caps");
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return;
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}
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}
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gst_overlay_blend_i420 (GST_BUFFER_DATA (out),
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GST_BUFFER_DATA (in1),
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GST_BUFFER_DATA (in2),
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GST_BUFFER_DATA (in3),
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overlay->width, overlay->height);
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GST_BUFFER_TIMESTAMP (out) = GST_BUFFER_TIMESTAMP (in1);
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GST_BUFFER_DURATION (out) = GST_BUFFER_DURATION (in1);
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gst_buffer_unref (in1);
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gst_buffer_unref (in2);
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gst_buffer_unref (in3);
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gst_pad_push (overlay->srcpad, out);
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}
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static void
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gst_overlay_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec)
|
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{
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GstOverlay *overlay;
|
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overlay = GST_OVERLAY(object);
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switch (prop_id) {
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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_overlay_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec)
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{
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GstOverlay *overlay;
|
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|
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overlay = GST_OVERLAY(object);
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switch (prop_id) {
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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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|
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static gboolean
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plugin_init (GModule *module, GstPlugin *plugin)
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{
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GstElementFactory *factory;
|
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factory = gst_element_factory_new("overlay",GST_TYPE_OVERLAY,
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&overlay_details);
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g_return_val_if_fail(factory != NULL, FALSE);
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gst_element_factory_add_pad_template (factory,
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GST_PAD_TEMPLATE_GET (overlay_sink1_factory));
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gst_element_factory_add_pad_template (factory,
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GST_PAD_TEMPLATE_GET (overlay_sink2_factory));
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gst_element_factory_add_pad_template (factory,
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GST_PAD_TEMPLATE_GET (overlay_sink3_factory));
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gst_element_factory_add_pad_template (factory,
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GST_PAD_TEMPLATE_GET (overlay_src_factory));
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
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|
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return TRUE;
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}
|
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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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"overlay",
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plugin_init
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};
|
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|
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67
gst/overlay/gstoverlay.h
Normal file
67
gst/overlay/gstoverlay.h
Normal file
|
|
@ -0,0 +1,67 @@
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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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#ifndef __GST_OVERLAY_H__
|
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#define __GST_OVERLAY_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
|
||||
#define GST_TYPE_OVERLAY \
|
||||
(gst_overlay_get_type())
|
||||
#define GST_OVERLAY(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OVERLAY,GstOverlay))
|
||||
#define GST_OVERLAY_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OVERLAY,GstOverlay))
|
||||
#define GST_IS_OVERLAY(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OVERLAY))
|
||||
#define GST_IS_OVERLAY_CLASS(obj) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OVERLAY))
|
||||
|
||||
typedef struct _GstOverlay GstOverlay;
|
||||
typedef struct _GstOverlayClass GstOverlayClass;
|
||||
|
||||
struct _GstOverlay {
|
||||
GstElement element;
|
||||
|
||||
GstPad *srcpad;
|
||||
GstPad *sinkpad1;
|
||||
GstPad *sinkpad2;
|
||||
GstPad *sinkpad3;
|
||||
|
||||
gint format;
|
||||
gint width;
|
||||
gint height;
|
||||
|
||||
gint duration;
|
||||
gint position;
|
||||
|
||||
gint type;
|
||||
gint fps;
|
||||
gint border;
|
||||
gint depth;
|
||||
|
||||
gfloat framerate;
|
||||
};
|
||||
|
||||
struct _GstOverlayClass {
|
||||
GstElementClass parent_class;
|
||||
};
|
||||
|
||||
#endif /* __GST_OVERLAY_H__ */
|
||||
Loading…
Reference in a new issue