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87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* GStreamer
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* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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*
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* gsttypefind.h: typefinding subsystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_TYPE_FIND_H__
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#define __GST_TYPE_FIND_H__
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#include <gst/gstcaps.h>
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#include <gst/gstplugin.h>
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#include <gst/gstpluginfeature.h>
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G_BEGIN_DECLS
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typedef struct _GstTypeFind GstTypeFind;
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typedef void (* GstTypeFindFunction) (GstTypeFind *find, gpointer data);
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typedef enum {
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GST_TYPE_FIND_MINIMUM = 1,
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GST_TYPE_FIND_POSSIBLE = 50,
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GST_TYPE_FIND_LIKELY = 80,
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GST_TYPE_FIND_NEARLY_CERTAIN = 99,
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GST_TYPE_FIND_MAXIMUM = 100
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} GstTypeFindProbability;
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/**
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* GstTypeFind:
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*
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* Object that stores typefind callbacks.
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*/
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struct _GstTypeFind {
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/* private to the caller of the typefind function */
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guint8 * (* peek) (gpointer data,
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gint64 offset,
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guint size);
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void (* suggest) (gpointer data,
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guint probability,
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const GstCaps * caps);
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gpointer data;
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/* optional */
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guint64 (* get_length) (gpointer data);
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/* <private> */
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gpointer _gst_reserved[GST_PADDING];
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};
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/* typefind function interface */
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guint8 * gst_type_find_peek (GstTypeFind * find,
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gint64 offset,
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guint size);
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void gst_type_find_suggest (GstTypeFind * find,
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guint probability,
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const GstCaps * caps);
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guint64 gst_type_find_get_length (GstTypeFind * find);
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/* registration interface */
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gboolean gst_type_find_register (GstPlugin * plugin,
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const gchar * name,
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guint rank,
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GstTypeFindFunction func,
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gchar ** extensions,
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const GstCaps * possible_caps,
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gpointer data);
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G_END_DECLS
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#endif /* __GST_TYPE_FIND_H__ */
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