gstreamer/gst/gstpad.h
Erik Walthinsen b6d31c1c72 Megapatch, changes which states are available, how they're used, and how they're set. Also modifies the scheduling s...
Original commit message from CVS:
Megapatch, changes which states are available, how they're used, and how
they're set.  Also modifies the scheduling system, breaking pulled
buffers.  Check mail archives for more details.
2000-07-17 17:14:15 +00:00

130 lines
3.8 KiB
C

/* 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.
*/
#ifndef __GST_PAD_H__
#define __GST_PAD_H__
#include <gnome-xml/parser.h>
#include <gst/gstobject.h>
#include <gst/gstbuffer.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_PAD (gst_pad_get_type())
#define GST_PAD(obj) (GTK_CHECK_CAST((obj),GST_TYPE_PAD,GstPad))
#define GST_PAD_CLASS(klass) (GTK_CHECK_CLASS_CAST((klass),GST_TYPE_PAD,GstPadClass))
#define GST_IS_PAD(obj) (GTK_CHECK_TYPE((obj),GST_TYPE_PAD))
#define GST_IS_PAD_CLASS(obj) (GTK_CHECK_CLASS_TYPE((klass),GST_TYPE_PAD))
// quick test to see if the pad is connected
#define GST_PAD_CONNECTED(pad) ((pad)->peer != NULL)
#define GST_PAD_CAN_PULL(pad) ((pad)->pullfunc != NULL)
typedef struct _GstPad GstPad;
typedef struct _GstPadClass GstPadClass;
/* this defines the functions used to chain buffers
* pad is the sink pad (so the same chain function can be used for N pads)
* buf is the buffer being passed */
typedef void (*GstPadChainFunction) (GstPad *pad,GstBuffer *buf);
typedef void (*GstPadPullFunction) (GstPad *pad);
typedef void (*GstPadPushFunction) (GstPad *pad);
typedef void (*GstPadQoSFunction) (GstPad *pad, glong qos_message);
typedef enum {
GST_PAD_UNKNOWN,
GST_PAD_SRC,
GST_PAD_SINK,
} GstPadDirection;
//typedef enum {
//} GstPadFlags;
struct _GstPad {
GstObject object;
gchar *name;
guint16 type;
GstPadDirection direction;
GstPad *peer;
GstBuffer *bufpen;
GstPadChainFunction chainfunc;
GstPadPullFunction pullfunc;
GstPadPushFunction pushfunc;
GstPadQoSFunction qosfunc;
GstObject *parent;
GList *ghostparents;
};
struct _GstPadClass {
GstObjectClass parent_class;
};
GtkType gst_pad_get_type(void);
GstPad *gst_pad_new(gchar *name,GstPadDirection direction);
void gst_pad_destroy(GstPad *pad);
GstPadDirection gst_pad_get_direction(GstPad *pad);
void gst_pad_set_chain_function(GstPad *pad,GstPadChainFunction chain);
void gst_pad_set_pull_function(GstPad *pad, GstPadPullFunction pull);
void gst_pad_set_qos_function(GstPad *pad, GstPadQoSFunction qos);
guint16 gst_pad_get_type_id(GstPad *pad);
void gst_pad_set_type_id(GstPad *pad,guint16 id);
void gst_pad_set_name(GstPad *pad,gchar *name);
gchar *gst_pad_get_name(GstPad *pad);
#define gst_pad_destroy(pad) gst_object_destroy(GST_OBJECT(pad))
void gst_pad_set_parent(GstPad *pad,GstObject *parent);
void gst_pad_add_ghost_parent(GstPad *pad,GstObject *parent);
void gst_pad_remove_ghost_parent(GstPad *pad,GstObject *parent);
GstObject *gst_pad_get_parent(GstPad *pad);
GList *gst_pad_get_ghost_parents(GstPad *pad);
GstPad *gst_pad_get_peer(GstPad *pad);
void gst_pad_connect(GstPad *srcpad,GstPad *sinkpad);
void gst_pad_disconnect(GstPad *srcpad,GstPad *sinkpad);
void gst_pad_push(GstPad *pad,GstBuffer *buffer);
GstBuffer *gst_pad_pull(GstPad *pad);
void gst_pad_handle_qos(GstPad *pad, glong qos_message);
xmlNodePtr gst_pad_save_thyself(GstPad *pad,xmlNodePtr parent);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_PAD_H__ */