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41f1a40704
And make use of it in the typefind element. It's useful to distinguish between the different errors why typefinding can fail, and especially to not consider GST_FLOW_FLUSHING as an actual error. https://bugzilla.gnome.org/show_bug.cgi?id=796894
106 lines
4.9 KiB
C
106 lines
4.9 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, 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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#include <gst/base/base-prelude.h>
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G_BEGIN_DECLS
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GST_BASE_API
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GstCaps * gst_type_find_helper (GstPad *src, guint64 size);
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GST_BASE_API
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GstCaps * gst_type_find_helper_for_data (GstObject *obj,
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const guint8 *data,
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gsize size,
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GstTypeFindProbability *prob);
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GST_BASE_API
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GstCaps * gst_type_find_helper_for_data_with_extension (GstObject *obj,
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const guint8 *data,
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gsize size,
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const gchar *extension,
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GstTypeFindProbability *prob);
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GST_BASE_API
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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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GST_BASE_API
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GstCaps * gst_type_find_helper_for_buffer_with_extension (GstObject *obj,
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GstBuffer *buf,
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const gchar *extension,
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GstTypeFindProbability *prob);
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GST_BASE_API
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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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* @parent: (allow-none): the parent of @obj or %NULL
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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: (out): 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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GstObject *parent,
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guint64 offset,
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guint length,
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GstBuffer **buffer);
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GST_BASE_API
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GstCaps * gst_type_find_helper_get_range (GstObject *obj,
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GstObject *parent,
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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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GST_BASE_API
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GstFlowReturn gst_type_find_helper_get_range_full (GstObject *obj,
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GstObject *parent,
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GstTypeFindHelperGetRangeFunction func,
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guint64 size,
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const gchar *extension,
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GstCaps **caps,
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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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