73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/**************************************************************************
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* wanpipe_codec.h WANPIPE(tm) Multiprotocol WAN Link Driver.
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* TDM voice board configuration.
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*
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* Author: Nenad Corbic <ncorbic@sangoma.com>
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*
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* Copyright: (c) 1995-2005 Sangoma Technologies Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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******************************************************************************
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*/
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/*
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******************************************************************************
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INCLUDE FILES
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******************************************************************************
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*/
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#ifndef __WANPIPE_CODEC_H_
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#define __WANPIPE_CODEC_H_
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#include "wanpipe_codec_iface.h"
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#ifdef CONFIG_PRODUCT_WANPIPE_CODEC_SLINEAR_LAW
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/*! The A-law alternate mark inversion mask */
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#define G711_ALAW_AMI_MASK 0x55
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/*! Bias for u-law encoding from linear. */
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#define G711_ULAW_BIAS 0x84
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extern int wanpipe_codec_law_init(void);
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extern int wanpipe_codec_convert_s_2_alaw(u16 *data,
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int len,
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u8 *buf,
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u8 *gain,
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u8 user);
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extern int wanpipe_codec_convert_s_2_ulaw(u16 *data,
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int len,
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u8 *buf,
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u8 *gain,
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u8 user);
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extern int wanpipe_codec_convert_alaw_2_s(u8 *data,
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int len,
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u16 *buf,
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u32 *power_ptr,
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u8 *gain,
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u8 user);
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extern int wanpipe_codec_convert_ulaw_2_s(u8 *data,
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int len,
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u16 *buf,
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u32 *power_ptr,
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u8 *gain,
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u8 user);
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extern int wanpipe_codec_get_mtu_law_2_s(u32 mtu);
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extern int wanpipe_codec_get_mtu_s_2_law(u32 mtu);
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extern int wanpipe_codec_get_alaw_to_linear(u8 alaw);
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extern int wanpipe_codec_get_ulaw_to_linear(u8 ulaw);
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#endif /*CONFIG_PRODUCT_WANPIPE_CODEC_SLINEAR_LAW*/
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#endif /*__WANPIPE_CODEC_H_*/
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