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ba1a299c 1// Copyright (C) 2014
eb191de6 2//
3// This code is licensed to you under the terms of the GNU GPL, version 2 or,
4// at your option, any later version. See the LICENSE.txt file for the text of
5// the license.
6//-----------------------------------------------------------------------------
1e090a61 7// Low frequency demod related commands
8// marshmellow
9// note that many of these demods are not the slickest code and they often rely
10// on peaks and clock instead of converting to clean signal.
11//
eb191de6 12//-----------------------------------------------------------------------------
13
14#ifndef LFDEMOD_H__
15#define LFDEMOD_H__
6923d3f1 16#include <stdint.h> // for uint_32+
17#include <stdbool.h> // for bool
eb191de6 18
fef74fdc 19//generic
8b6abef5 20extern size_t addParity(uint8_t *BitSource, uint8_t *dest, uint8_t sourceLen, uint8_t pLen, uint8_t pType);
21extern int askdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr, uint8_t amp, uint8_t askType);
669959bc 22extern int askdemod_ext(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr, uint8_t amp, uint8_t askType, int *startIdx);
8b6abef5 23extern void askAmp(uint8_t *BitStream, size_t size);
9fe4507c 24extern int BiphaseRawDecode(uint8_t * BitStream, size_t *size, int *offset, int invert);
8b6abef5 25extern uint32_t bytebits_to_byte(uint8_t* src, size_t numbits);
26extern uint32_t bytebits_to_byteLSBF(uint8_t* src, size_t numbits);
27extern uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj);
28extern int DetectASKClock(uint8_t dest[], size_t size, int *clock, int maxErr);
29extern uint8_t DetectCleanAskWave(uint8_t dest[], size_t size, uint8_t high, uint8_t low);
0f321d63 30extern uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fcLow, int *firstClockEdge);
6f36848f 31extern int DetectNRZClock(uint8_t dest[], size_t size, int clock, size_t *clockStartIdx);
b97311b1 32extern int DetectPSKClock(uint8_t dest[], size_t size, int clock, size_t *firstPhaseShift, uint8_t *curPhase, uint8_t *fc);
56de46b4 33extern int DetectStrongAskClock(uint8_t dest[], size_t size, int high, int low, int *clock);
0f321d63 34extern bool DetectST(uint8_t buffer[], size_t *size, int *foundclock, size_t *ststart, size_t *stend);
1c70664a 35extern int fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow, int *startIdx);
8b6abef5 36extern int getHiLo(uint8_t *BitStream, size_t size, int *high, int *low, uint8_t fuzzHi, uint8_t fuzzLo);
37extern uint32_t manchesterEncode2Bytes(uint16_t datain);
38extern int ManchesterEncode(uint8_t *BitStream, size_t size);
669959bc 39extern int manrawdecode(uint8_t *BitStream, size_t *size, uint8_t invert, uint8_t *alignPos);
6f36848f 40extern int nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert, int *startIdx);
b97311b1 41extern bool parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType);
8b6abef5 42extern uint8_t preambleSearch(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t *size, size_t *startIdx);
43extern bool preambleSearchEx(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t *size, size_t *startIdx, bool findone);
44extern int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert);
669959bc 45extern int pskRawDemod_ext(uint8_t dest[], size_t *size, int *clock, int *invert, int *startIdx);
8b6abef5 46extern void psk2TOpsk1(uint8_t *BitStream, size_t size);
47extern void psk1TOpsk2(uint8_t *BitStream, size_t size);
48extern size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t pType, size_t bLen);
fef74fdc 49
50//tag specific
1c70664a 51extern int AWIDdemodFSK(uint8_t *dest, size_t *size, int *waveStartIdx);
8b6abef5 52extern uint8_t Em410xDecode(uint8_t *BitStream, size_t *size, size_t *startIdx, uint32_t *hi, uint64_t *lo);
53extern int FDXBdemodBI(uint8_t *dest, size_t *size);
54extern int gProxII_Demod(uint8_t BitStream[], size_t *size);
1c70664a 55extern int HIDdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo, int *waveStartIdx);
56extern int IOdemodFSK(uint8_t *dest, size_t size, int *waveStartIdx);
1dae9811 57extern int indala64decode(uint8_t *bitStream, size_t *size, uint8_t *invert);
58extern int indala224decode(uint8_t *bitStream, size_t *size, uint8_t *invert);
1c70664a 59extern int ParadoxdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo, int *waveStartIdx);
8b6abef5 60extern int PrescoDemod(uint8_t *dest, size_t *size);
1c70664a 61extern int PyramiddemodFSK(uint8_t *dest, size_t *size, int *waveStartIdx);
8b6abef5 62extern int VikingDemod_AM(uint8_t *dest, size_t *size);
63extern int Visa2kDemod_AM(uint8_t *dest, size_t *size);
64
eb191de6 65#endif
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