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