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Initial Commit of CyanWorlds.com Engine Open Source Client/Plugin
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jwplatt
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/*
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HawkVoice Direct Interface (HVDI) cross platform network voice library
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Copyright (C) 2001 Phil Frisbie, Jr. (phil@hawksoft.com)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#ifndef HVDI_H
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#define HVDI_H
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#include "blowfish/blowfish.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define HVDI_MAJOR_VERSION 0
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#define HVDI_MINOR_VERSION 7
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#define HVDI_VERSION_STRING "HVDI 0.7 beta"
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/* This was copied from nl.h so that it did not need to be included */
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#if defined WIN32 || defined WIN64
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#pragma warning (disable:4514) /* disable "unreferenced inline function has
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been removed" warning */
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/* The default build for Windows is as a DLL. */
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/* If you want a static library, define WIN_STATIC_LIB. */
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#ifdef WIN_STATIC_LIB
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#define NL_EXP
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#else
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#if defined __LCC__
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#define NL_EXP extern
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#else
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#define NL_EXP __declspec(dllexport)
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#endif
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#endif
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#define NL_APIENTRY __stdcall
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#define NL_CALLBACK __cdecl
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#ifdef __GNUC__
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#define NL_INLINE extern __inline__
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#else
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#define NL_INLINE __inline
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#endif
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#else
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#define NL_EXP extern
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#define NL_APIENTRY
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#define NL_CALLBACK
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#ifdef __GNUC__
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#define NL_INLINE extern __inline__
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#else
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#define NL_INLINE inline /* assuming C99 compliant compiler */
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#endif /* __GNUC__ */
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#endif /* WIN32 || WIN64 */
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#ifndef NL_INVALID
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#define NL_INVALID (-1)
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#define NL_FALSE (0)
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#define NL_TRUE (1)
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#endif
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/* We will use HVDI or hvdi to prefix all HawkVoiceDI defines and functions */
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/*
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The internal state of the codec. This is READ ONLY! You can read hvdi_dec_state->codec
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if you want to know what type of codec is being used on the other side, but DO NOT
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write to this structure!! I could have hidden these structures behind an index, but
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this IS low level quick and dirty ;)
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hvdi_enc_state and hvdi_dec_state are defined separately to help the compiler spot
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your mistakes ;)
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*/
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typedef struct
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{
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unsigned char codec; /* the codec used with the last packet */
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unsigned short sequence;/* the sequence number of the last packet */
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void *state; /* the codec state */
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} hvdi_enc_state;
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typedef struct
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{
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unsigned char codec; /* the codec used with the last packet */
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unsigned short sequence;/* the sequence number of the last packet */
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void *state; /* the codec state */
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} hvdi_dec_state;
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typedef struct
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{
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int rate; /* HVDI_VOX_FAST, HVDI_VOX_MEDIUM, or HVDI_VOX_SLOW */
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int noisethreshold; /* 0(always pass) to 1000(never pass), 300 is a good starting point */
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int samplecount; /* init to 0; used internally by hvdiVOX */
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} hvdi_vox;
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typedef struct
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{
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unsigned long lcmrate; /* least common multiple of rates */
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unsigned long inskip, outskip; /* LCM increments for I & O rates */
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unsigned long total;
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unsigned long intot, outtot; /* total samples in terms of LCM rate */
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long lastsamp;
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} hvdi_rate;
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typedef struct
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{
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unsigned int sample_max;
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int counter;
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float gain;
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float peak;
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int silence_counter;
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} hvdi_agc;
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/* The basic codecs, from hawkvoice.h */
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#define HV_2_4K_CODEC 0x0001 /* LPC-10 2.4 Kbps codec */
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#define HV_4_8K_CODEC 0x0002 /* LPC 4.8 Kbps codec */
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#define HV_13_2K_CODEC 0x0004 /* GSM 13.2 Kbps codec */
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#define HV_32K_CODEC 0x0008 /* Intel/DVI ADPCM 32 Kbps codec */
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#define HV_64K_CODEC 0x0010 /* G.711 u-law 64 Kbps codec */
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#define HV_1_4K_CODEC 0x0011 /* OpenLPC 1.4 Kbps codec */
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#define HV_1_8K_CODEC 0x0012 /* OpenLPC 1.8 Kbps codec */
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/* Alternate codec names */
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#define HV_LPC10_CODEC HV_2_4K_CODEC
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#define HV_LPC_CODEC HV_4_8K_CODEC
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#define HV_GSM_CODEC HV_13_2K_CODEC
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#define HV_ADPCM_32_CODEC HV_32K_CODEC
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#define HV_PCM_64_CODEC HV_64K_CODEC
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#define HV_G_711_CODEC HV_64K_CODEC
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#define HV_ULAW_CODEC HV_64K_CODEC
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#define HV_LPC_1_4_CODEC HV_1_4K_CODEC
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#define HV_LPC_1_8_CODEC HV_1_8K_CODEC
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/* VOX options */
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/* how many samples of silence to wait after voice stops */
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#define HVDI_VOX_FAST 4000 /* 1/2 second */
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#define HVDI_VOX_MEDIUM 8000 /* 1 second */
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#define HVDI_VOX_SLOW 12000 /* 1 1/2 seconds */
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/* HawkVoiceDI API */
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NL_EXP hvdi_enc_state* NL_APIENTRY hvdiCreateEncoderState(void);
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NL_EXP hvdi_dec_state* NL_APIENTRY hvdiCreateDecoderState(void);
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NL_EXP void NL_APIENTRY hvdiFreeEncoderState(hvdi_enc_state *state);
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NL_EXP void NL_APIENTRY hvdiFreeDecoderState(hvdi_dec_state *state);
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NL_EXP int NL_APIENTRY hvdiSetCodec(unsigned char codec, hvdi_enc_state *state);
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NL_EXP BF_KEY* NL_APIENTRY hvdiMakeEncryptionKey(const char *string);
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NL_EXP int NL_APIENTRY hvdiIsVoicePacket(unsigned char *packet, int length);
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NL_EXP int NL_APIENTRY hvdiDecodePacket(unsigned char *packet, int paclen, short *buffer,
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int buflen, BF_KEY *key, hvdi_dec_state *state);
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NL_EXP int NL_APIENTRY hvdiEncodePacket(short *buffer, int buflen, unsigned char *packet,
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int paclen, BF_KEY *key, hvdi_enc_state *state);
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NL_EXP int NL_APIENTRY hvdiVOX(short *buffer, int buflen, hvdi_vox *vox);
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NL_EXP void NL_APIENTRY hvdiRateInit(hvdi_rate *rate, int inrate, int outrate);
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NL_EXP void NL_APIENTRY hvdiRateFlow(hvdi_rate *rate, short *inbuf, short *outbuf, int *inlen, int *outlen);
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NL_EXP void NL_APIENTRY hvdiAGCInit(hvdi_agc *agc, float level);
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NL_EXP void NL_APIENTRY hvdiAGC(hvdi_agc *agc, short *buffer, int len);
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NL_EXP void NL_APIENTRY hvdiMix(short *outbuf, short **inbuf, int number, int inlen);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* HVDI_H */
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