2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) 2000,2005 Wim Taymans <wim@fluendo.com>
4 * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
24 #ifndef __GST_TYPEFINDHELPER_H__
25 #define __GST_TYPEFINDHELPER_H__
31 GstCaps * gst_type_find_helper (GstPad *src, guint64 size);
33 GstCaps * gst_type_find_helper_for_data (GstObject *obj,
36 GstTypeFindProbability *prob);
37 GstCaps * gst_type_find_helper_for_buffer (GstObject *obj,
39 GstTypeFindProbability *prob);
41 GstCaps * gst_type_find_helper_for_extension (GstObject * obj,
42 const gchar * extension);
45 * GstTypeFindHelperGetRangeFunction:
46 * @obj: a #GstObject that will handle the getrange request
47 * @offset: the offset of the range
48 * @length: the length of the range
49 * @buffer: a memory location to hold the result buffer
51 * This function will be called by gst_type_find_helper_get_range() when
52 * typefinding functions request to peek at the data of a stream at certain
53 * offsets. If this function returns GST_FLOW_OK, the result buffer will be
54 * stored in @buffer. The contents of @buffer is invalid for any other
57 * This function is supposed to behave exactly like a #GstPadGetRangeFunction.
59 * Returns: GST_FLOW_OK for success
61 typedef GstFlowReturn (*GstTypeFindHelperGetRangeFunction) (GstObject *obj,
66 GstCaps * gst_type_find_helper_get_range (GstObject * obj,
67 GstTypeFindHelperGetRangeFunction func,
69 GstTypeFindProbability *prob);
71 GstCaps * gst_type_find_helper_get_range_ext (GstObject * obj,
72 GstTypeFindHelperGetRangeFunction func,
74 const gchar *extension,
75 GstTypeFindProbability *prob);
79 #endif /* __GST_TYPEFINDHELPER_H__ */