/* GStreamer

 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>

 * Copyright (C) 2000,2005 Wim Taymans <wim@fluendo.com>

 * Copyright (C) 2006      Tim-Philipp Müller <tim centricular net>

 *

 * gsttypefindhelper.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_TYPEFINDHELPER_H__

#define __GST_TYPEFINDHELPER_H__

#include <gst/gst.h>

G_BEGIN_DECLS

GstCaps * gst_type_find_helper (GstPad *src, guint64 size);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

GstCaps * gst_type_find_helper_for_buffer (GstObject              *obj,

                                           GstBuffer              *buf,

                                           GstTypeFindProbability *prob);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

GstCaps * gst_type_find_helper_for_extension (GstObject * obj,

                                              const gchar * extension);

/**

 * GstTypeFindHelperGetRangeFunction:

 * @obj: a #GstObject that will handle the getrange request

 * @offset: the offset of the range

 * @length: the length of the range

 * @buffer: a memory location to hold the result buffer

 *

 * This function will be called by gst_type_find_helper_get_range() when

 * typefinding functions request to peek at the data of a stream at certain

 * offsets. If this function returns GST_FLOW_OK, the result buffer will be

 * stored in @buffer. The  contents of @buffer is invalid for any other

 * return value.

 *

 * This function is supposed to behave exactly like a #GstPadGetRangeFunction.

 *

 * Returns: GST_FLOW_OK for success

 */

typedef GstFlowReturn (*GstTypeFindHelperGetRangeFunction) (GstObject  *obj,

                                                            guint64     offset,

                                                            guint       length,

                                                            GstBuffer **buffer);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

GstCaps * gst_type_find_helper_get_range (GstObject                        * obj,

                                          GstTypeFindHelperGetRangeFunction  func,

                                          guint64                            size,

                                          GstTypeFindProbability            *prob);

G_END_DECLS

#endif /* __GST_TYPEFINDHELPER_H__ */