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35 lines
718 B
C
35 lines
718 B
C
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/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* A-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_ALAW_H
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#define _ASTERISK_ALAW_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_alaw_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_lin2a[8192];
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//! help
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extern short __ast_alaw[256];
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#define AST_LIN2A(a) (__ast_lin2a[((unsigned short)(a)) >> 3])
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#define AST_ALAW(a) (__ast_alaw[(a)])
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#endif
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