gstreamer/plugins/elements/gstfilesrc.h
Edward Hervey 1f0b6f35d5 filesrc: Don't use expensive cast checks in _create
_create() is a pad function set by ourselves, therefore we're sure basesrc
is a GstFileSrc.

Speeds up _create() by 17% and the total call by 8% (instruction calls measurements
done with valgrind).

Fixes 
2010-02-17 12:37:11 +01:00

85 lines
2.6 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstfilesrc.h:
*
* 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_FILE_SRC_H__
#define __GST_FILE_SRC_H__
#include <sys/types.h>
#include <gst/gst.h>
#include <gst/base/gstbasesrc.h>
G_BEGIN_DECLS
#define GST_TYPE_FILE_SRC \
(gst_file_src_get_type())
#define GST_FILE_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FILE_SRC,GstFileSrc))
#define GST_FILE_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FILE_SRC,GstFileSrcClass))
#define GST_IS_FILE_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FILE_SRC))
#define GST_IS_FILE_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FILE_SRC))
#define GST_FILE_SRC_CAST(obj) ((GstFileSrc*) obj)
typedef struct _GstFileSrc GstFileSrc;
typedef struct _GstFileSrcClass GstFileSrcClass;
/**
* GstFileSrc:
*
* Opaque #GstFileSrc structure.
*/
struct _GstFileSrc {
GstBaseSrc element;
/*< private >*/
guint pagesize; /* system page size */
gchar *filename; /* filename */
gchar *uri; /* caching the URI */
gint fd; /* open file descriptor */
guint64 read_position; /* position of fd */
gboolean touch; /* whether to touch every page */
gboolean using_mmap; /* whether we opened it with mmap */
gboolean sequential; /* Whether to madvise (MADV_SEQUENTIAL)
for mmap pages */
gboolean seekable; /* whether the file is seekable */
gboolean is_regular; /* whether it's a (symlink to a)
regular file */
GstBuffer *mapbuf;
size_t mapsize;
gboolean use_mmap;
};
struct _GstFileSrcClass {
GstBaseSrcClass parent_class;
};
GType gst_file_src_get_type (void);
G_END_DECLS
#endif /* __GST_FILE_SRC_H__ */