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70e5887906
In review 4843 (ASTERISK-24858), we added a hack that forced a smoother creation when sending signed linear so that the byte order was adjusted during transmission. This was needed because smoother flags were lost during the new format work that was done in Asterisk 13. Rather than rolling that same hack into res_rtp_multicast, re-introduce smoother flags so that formats can dictate their own options. Change-Id: I77b835fba0e539c6ce50014a984766f63cab2c16
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@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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/*! \file
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* \brief Asterisk internal frame definitions.
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* \arg For an explanation of frames, see \ref Def_Frame
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* \arg Frames are send of Asterisk channels, see \ref Def_Channel
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*/
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#ifndef _ASTERISK_SMOOTHER_H
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#define _ASTERISK_SMOOTHER_H
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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#include "asterisk/endian.h"
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#define AST_SMOOTHER_FLAG_G729 (1 << 0)
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#define AST_SMOOTHER_FLAG_BE (1 << 1)
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#define AST_SMOOTHER_FLAG_FORCED (1 << 2)
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/*! \name AST_Smoother
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*/
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/*@{ */
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/*! \page ast_smooth The AST Frame Smoother
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The ast_smoother interface was designed specifically
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to take frames of variant sizes and produce frames of a single expected
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size, precisely what you want to do.
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The basic interface is:
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- Initialize with ast_smoother_new()
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- Queue input frames with ast_smoother_feed()
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- Get output frames with ast_smoother_read()
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- when you're done, free the structure with ast_smoother_free()
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- Also see ast_smoother_test_flag(), ast_smoother_set_flags(), ast_smoother_get_flags(), ast_smoother_reset()
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*/
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struct ast_smoother;
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struct ast_frame;
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struct ast_smoother *ast_smoother_new(int bytes);
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void ast_smoother_set_flags(struct ast_smoother *smoother, int flags);
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int ast_smoother_get_flags(struct ast_smoother *smoother);
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int ast_smoother_test_flag(struct ast_smoother *s, int flag);
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void ast_smoother_free(struct ast_smoother *s);
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void ast_smoother_reset(struct ast_smoother *s, int bytes);
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/*!
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* \brief Reconfigure an existing smoother to output a different number of bytes per frame
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* \param s the smoother to reconfigure
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* \param bytes the desired number of bytes per output frame
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* \return nothing
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*
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*/
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void ast_smoother_reconfigure(struct ast_smoother *s, int bytes);
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int __ast_smoother_feed(struct ast_smoother *s, struct ast_frame *f, int swap);
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struct ast_frame *ast_smoother_read(struct ast_smoother *s);
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#define ast_smoother_feed(s,f) __ast_smoother_feed(s, f, 0)
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define ast_smoother_feed_be(s,f) __ast_smoother_feed(s, f, 1)
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#define ast_smoother_feed_le(s,f) __ast_smoother_feed(s, f, 0)
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#else
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#define ast_smoother_feed_be(s,f) __ast_smoother_feed(s, f, 0)
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#define ast_smoother_feed_le(s,f) __ast_smoother_feed(s, f, 1)
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#endif
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/*@} Doxygen marker */
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif /* _ASTERISK_SMOOTHER_H */
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