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Add videobalance from template
Original commit message from CVS: Add videobalance from template
This commit is contained in:
David Schleef
parent
1bdd2c9cc3
commit
623f55f194
2 changed files with 333 additions and 0 deletions
272
gst/videofilter/gstvideobalance.c
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272
gst/videofilter/gstvideobalance.c
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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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/*#define DEBUG_ENABLED */
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#include <gstvideobalance.h>
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/* elementfactory information */
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static GstElementDetails videobalance_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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/* GstVideobalance 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_videobalance_class_init (GstVideobalanceClass *klass);
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static void gst_videobalance_init (GstVideobalance *videobalance);
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static void gst_videobalance_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_videobalance_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gst_videobalance_planar411(GstVideofilter *videofilter, void *dest, void *src);
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static void gst_videobalance_setup(GstVideofilter *videofilter);
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static GstVideobalanceClass *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_videobalance_get_type (void)
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{
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static GType videobalance_type = 0;
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if (!videobalance_type) {
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static const GTypeInfo videobalance_info = {
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sizeof(GstVideobalanceClass), NULL,
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NULL,
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(GClassInitFunc)gst_videobalance_class_init,
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NULL,
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NULL,
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sizeof(GstVideobalance),
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0,
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(GInstanceInitFunc)gst_videobalance_init,
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};
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videobalance_type = g_type_register_static(GST_TYPE_VIDEOFILTER, "GstVideobalance", &videobalance_info, 0);
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}
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return videobalance_type;
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}
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static GstVideofilterFormat gst_videobalance_formats[] = {
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{ "I420", 12, gst_videobalance_planar411, },
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};
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static void
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gst_videobalance_class_init (GstVideobalanceClass *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_VIDEOBALANCE_METHOD, GST_VIDEOBALANCE_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_videobalance_set_property;
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gobject_class->get_property = gst_videobalance_get_property;
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gstvideofilter_class->setup = gst_videobalance_setup;
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for(i=0;i<G_N_ELEMENTS(gst_videobalance_formats);i++){
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gst_videofilter_class_add_format(parent_class, gst_videobalance_formats + i);
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}
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}
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static GstCaps *gst_videobalance_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_videobalance_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_videobalance_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_videobalance_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_videobalance_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_videobalance_init (GstVideobalance *videobalance)
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{
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GstVideofilter *videofilter;
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GST_DEBUG("gst_videobalance_init");
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videofilter = GST_VIDEOFILTER(videobalance);
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videofilter->sinkpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (gst_videobalance_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_videobalance_src_template_factory),
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"src");
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gst_videofilter_postinit(GST_VIDEOFILTER(videobalance));
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}
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static void
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gst_videobalance_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstVideobalance *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_VIDEOBALANCE(object));
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src = GST_VIDEOBALANCE(object);
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GST_DEBUG("gst_videobalance_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_videobalance_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstVideobalance *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_VIDEOBALANCE(object));
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src = GST_VIDEOBALANCE(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 videobalance element */
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factory = gst_element_factory_new("videobalance",GST_TYPE_VIDEOBALANCE,
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&videobalance_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_videobalance_sink_template_factory));
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gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (gst_videobalance_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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"videobalance",
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plugin_init
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};
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static void gst_videobalance_setup(GstVideofilter *videofilter)
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{
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GstVideobalance *videobalance;
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g_return_if_fail(GST_IS_VIDEOBALANCE(videofilter));
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videobalance = GST_VIDEOBALANCE(videofilter);
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/* if any setup needs to be done, do it here */
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}
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static void gst_videobalance_planar411(GstVideofilter *videofilter,
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void *dest, void *src)
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{
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GstVideobalance *videobalance;
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g_return_if_fail(GST_IS_VIDEOBALANCE(videofilter));
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videobalance = GST_VIDEOBALANCE(videofilter);
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/* do something interesting here */
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}
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61
gst/videofilter/gstvideobalance.h
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61
gst/videofilter/gstvideobalance.h
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@ -0,0 +1,61 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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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#ifndef __GST_VIDEOBALANCE_H__
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#define __GST_VIDEOBALANCE_H__
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#include <config.h>
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#include <gst/gst.h>
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#include "gstvideofilter.h"
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEOBALANCE \
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(gst_videobalance_get_type())
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#define GST_VIDEOBALANCE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOBALANCE,GstVideobalance))
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#define GST_VIDEOBALANCE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEOBALANCE,GstVideobalanceClass))
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#define GST_IS_VIDEOBALANCE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOBALANCE))
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#define GST_IS_VIDEOBALANCE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEOBALANCE))
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typedef struct _GstVideobalance GstVideobalance;
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typedef struct _GstVideobalanceClass GstVideobalanceClass;
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struct _GstVideobalance {
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GstVideofilter videofilter;
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};
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struct _GstVideobalanceClass {
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GstVideofilterClass parent_class;
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};
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GType gst_videobalance_get_type(void);
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G_END_DECLS
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#endif /* __GST_VIDEOBALANCE_H__ */
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