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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4806 65c4cc65-6c06-0410-ace0-fbb531ad65f3
35 lines
734 B
C
Executable File
35 lines
734 B
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* u-Law to Signed linear conversion
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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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
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*/
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#ifndef _ASTERISK_ULAW_H
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#define _ASTERISK_ULAW_H
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/*! Init the ulaw conversion stuff */
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/*!
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* To init the ulaw to slinear conversion stuff, this needs to be run.
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*/
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extern void ast_ulaw_init(void);
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/*! converts signed linear to mulaw */
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/*!
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*/
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extern unsigned char __ast_lin2mu[16384];
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/*! help */
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extern short __ast_mulaw[256];
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#define AST_LIN2MU(a) (__ast_lin2mu[((unsigned short)(a)) >> 2])
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#define AST_MULAW(a) (__ast_mulaw[(a)])
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#endif
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