gstreamer/gst/gstsrc.c

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/* Gnome-Streamer
* 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.
*/
#include <gst/gst.h>
/* Src signals and args */
enum {
EOS,
LAST_SIGNAL
};
enum {
ARG_0,
/* FILL ME */
};
static void gst_src_class_init(GstSrcClass *klass);
static void gst_src_init(GstSrc *src);
static GstElementClass *parent_class = NULL;
static guint gst_src_signals[LAST_SIGNAL] = { 0 };
GtkType
gst_src_get_type(void) {
static GtkType src_type = 0;
if (!src_type) {
static const GtkTypeInfo src_info = {
"GstSrc",
sizeof(GstSrc),
sizeof(GstSrcClass),
(GtkClassInitFunc)gst_src_class_init,
(GtkObjectInitFunc)gst_src_init,
(GtkArgSetFunc)NULL,
(GtkArgGetFunc)NULL,
(GtkClassInitFunc)NULL,
};
src_type = gtk_type_unique(GST_TYPE_ELEMENT,&src_info);
}
return src_type;
}
static void
gst_src_class_init(GstSrcClass *klass) {
GtkObjectClass *gtkobject_class;
gtkobject_class = (GtkObjectClass*)klass;
parent_class = gtk_type_class(GST_TYPE_ELEMENT);
gst_src_signals[EOS] =
gtk_signal_new("eos",GTK_RUN_LAST,gtkobject_class->type,
GTK_SIGNAL_OFFSET(GstSrcClass,eos),
gtk_marshal_NONE__POINTER,GTK_TYPE_NONE,1,
GTK_TYPE_POINTER);
gtk_object_class_add_signals(gtkobject_class,gst_src_signals,LAST_SIGNAL);
}
static void gst_src_init(GstSrc *src) {
src->flags = 0;
}
void gst_src_signal_eos(GstSrc *src) {
g_return_if_fail(src != NULL);
g_return_if_fail(GST_IS_SRC(src));
gtk_signal_emit(GTK_OBJECT(src),gst_src_signals[EOS],src);
}
void gst_src_push(GstSrc *src) {
GstSrcClass *oclass;
g_return_if_fail(src != NULL);
g_return_if_fail(GST_IS_SRC(src));
oclass = (GstSrcClass *)(GTK_OBJECT(src)->klass);
g_return_if_fail(oclass->push != NULL);
(oclass->push)(src);
}
/**
* gst_src_push_region:
* @src: source to trigger the push of
* @offset: offset in source
* @size: number of bytes to push
*
* Push a buffer of a given size from the source.
*/
void gst_src_push_region(GstSrc *src,gulong offset,gulong size) {
GstSrcClass *oclass;
g_return_if_fail(src != NULL);
g_return_if_fail(GST_IS_SRC(src));
oclass = (GstSrcClass *)(GTK_OBJECT(src)->klass);
g_return_if_fail(oclass->push_region != NULL);
(oclass->push_region)(src,offset,size);
}