1 /* GStreamer

     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>

     5  *

     6  * gsttypefindhelper.h:

     7  *

     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.

    12  *

    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.

    17  *

    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.

    22  */

    23 

    24 #ifndef __GST_TYPEFINDHELPER_H__

    25 #define __GST_TYPEFINDHELPER_H__

    26 

    27 #include <gst/gst.h>

    28 

    29 G_BEGIN_DECLS

    30 

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

    32 #ifdef __SYMBIAN32__

    33 IMPORT_C

    34 #endif

    35 

    36 

    37 GstCaps * gst_type_find_helper_for_buffer (GstObject              *obj,

    38                                            GstBuffer              *buf,

    39                                            GstTypeFindProbability *prob);

    40 

    41 /**

    42  * GstTypeFindHelperGetRangeFunction:

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

    44  * @offset: the offset of the range

    45  * @length: the length of the range

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

    47  *

    48  * This function will be called by gst_type_find_helper_get_range() when

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

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

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

    52  * return value.

    53  *

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

    55  *

    56  * Returns: GST_FLOW_OK for success

    57  */

    58 typedef GstFlowReturn (*GstTypeFindHelperGetRangeFunction) (GstObject  *obj,

    59                                                             guint64     offset,

    60                                                             guint       length,

    61                                                             GstBuffer **buffer);

    62 #ifdef __SYMBIAN32__

    63 IMPORT_C

    64 #endif

    65 

    66 

    67 GstCaps * gst_type_find_helper_get_range (GstObject                        * obj,

    68                                           GstTypeFindHelperGetRangeFunction  func,

    69                                           guint64                            size,

    70                                           GstTypeFindProbability            *prob);

    71 

    72 G_END_DECLS

    73 

    74 #endif /* __GST_TYPEFINDHELPER_H__ */