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8fff434835
Add a method to perform get_range typefinding that also uses the uri/location extension as an extra hint. It will first try to call the typefind functions of the factories that handle the given extension. The result is that in the common case, we only call one typefind function, which speeds up the typefinding a lot.
76 lines
3.2 KiB
C
76 lines
3.2 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2000,2005 Wim Taymans <wim@fluendo.com>
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* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
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*
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* gsttypefindhelper.h:
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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_TYPEFINDHELPER_H__
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#define __GST_TYPEFINDHELPER_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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GstCaps * gst_type_find_helper (GstPad *src, guint64 size);
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GstCaps * gst_type_find_helper_for_buffer (GstObject *obj,
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GstBuffer *buf,
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GstTypeFindProbability *prob);
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GstCaps * gst_type_find_helper_for_extension (GstObject * obj,
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const gchar * extension);
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/**
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* GstTypeFindHelperGetRangeFunction:
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* @obj: a #GstObject that will handle the getrange request
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* @offset: the offset of the range
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* @length: the length of the range
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* @buffer: a memory location to hold the result buffer
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*
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* This function will be called by gst_type_find_helper_get_range() when
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* typefinding functions request to peek at the data of a stream at certain
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* offsets. If this function returns GST_FLOW_OK, the result buffer will be
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* stored in @buffer. The contents of @buffer is invalid for any other
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* return value.
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*
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* This function is supposed to behave exactly like a #GstPadGetRangeFunction.
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*
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* Returns: GST_FLOW_OK for success
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*/
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typedef GstFlowReturn (*GstTypeFindHelperGetRangeFunction) (GstObject *obj,
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guint64 offset,
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guint length,
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GstBuffer **buffer);
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GstCaps * gst_type_find_helper_get_range (GstObject * obj,
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GstTypeFindHelperGetRangeFunction func,
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guint64 size,
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GstTypeFindProbability *prob);
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GstCaps * gst_type_find_helper_get_range_ext (GstObject * obj,
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GstTypeFindHelperGetRangeFunction func,
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guint64 size,
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const gchar *extension,
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GstTypeFindProbability *prob);
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G_END_DECLS
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#endif /* __GST_TYPEFINDHELPER_H__ */
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