66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2014, Digium, Inc.
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*
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* Joshua Colp <jcolp@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \brief Media Format Bitfield Compatibility API
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*
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* \author Joshua Colp <jcolp@digium.com>
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*/
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#ifndef _IAX2_FORMAT_COMPATIBILITY_H_
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#define _IAX2_FORMAT_COMPATIBILITY_H_
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struct ast_format;
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struct ast_format_cap;
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/*!
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* \brief Convert a format capabilities structure to a bitfield
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*
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* \param cap Capabilities structure containing formats
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*
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* \retval non-zero success
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* \retval zero no formats present or no formats supported
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*/
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uint64_t iax2_format_compatibility_cap2bitfield(const struct ast_format_cap *cap);
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/*!
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* \brief Convert a bitfield to a format capabilities structure
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*
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* \param bitfield The bitfield for the media formats
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* \param cap Capabilities structure to place formats into
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*
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* \retval 0 on success.
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* \retval -1 on error.
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*
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* \note If failure occurs the capabilities structure may contain a partial set of formats
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*/
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int iax2_format_compatibility_bitfield2cap(uint64_t bitfield, struct ast_format_cap *cap);
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/*!
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* \brief Pick the best format from the given bitfield formats.
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*
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* \param formats The bitfield for the media formats
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*
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* \retval non-zero Best format out of the given formats.
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* \retval zero No formats present or no formats considered best.
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*/
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uint64_t iax2_format_compatibility_best(uint64_t formats);
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#endif /* _IAX2_FORMAT_COMPATIBILITY_H */
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