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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);
24extern int BiphaseRawDecode(uint8_t * BitStream, size_t *size, int offset, int invert);
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);
30extern uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fcLow);
31extern uint8_t detectFSKClk_ext(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fcLow, int *firstClockEdge);
6f36848f 32extern int DetectNRZClock(uint8_t dest[], size_t size, int clock, size_t *clockStartIdx);
8b6abef5 33extern int DetectPSKClock(uint8_t dest[], size_t size, int clock);
34extern int DetectPSKClock_ext(uint8_t dest[], size_t size, int clock, int *firstPhaseShift);
56de46b4 35extern int DetectStrongAskClock(uint8_t dest[], size_t size, int high, int low, int *clock);
8b6abef5 36extern bool DetectST(uint8_t buffer[], size_t *size, int *foundclock);
37extern bool DetectST_ext(uint8_t buffer[], size_t *size, int *foundclock, size_t *ststart, size_t *stend);
38extern int fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow);
669959bc 39extern int fskdemod_ext(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow, int *startIdx);
8b6abef5 40extern int getHiLo(uint8_t *BitStream, size_t size, int *high, int *low, uint8_t fuzzHi, uint8_t fuzzLo);
41extern uint32_t manchesterEncode2Bytes(uint16_t datain);
42extern int ManchesterEncode(uint8_t *BitStream, size_t size);
669959bc 43extern int manrawdecode(uint8_t *BitStream, size_t *size, uint8_t invert, uint8_t *alignPos);
6f36848f 44extern int nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert, int *startIdx);
8b6abef5 45extern uint8_t parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType);
46extern uint8_t preambleSearch(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t *size, size_t *startIdx);
47extern bool preambleSearchEx(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t *size, size_t *startIdx, bool findone);
48extern int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert);
669959bc 49extern int pskRawDemod_ext(uint8_t dest[], size_t *size, int *clock, int *invert, int *startIdx);
8b6abef5 50extern void psk2TOpsk1(uint8_t *BitStream, size_t size);
51extern void psk1TOpsk2(uint8_t *BitStream, size_t size);
52extern size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t pType, size_t bLen);
fef74fdc 53
54//tag specific
8b6abef5 55extern int AWIDdemodFSK(uint8_t *dest, size_t *size);
56extern uint8_t Em410xDecode(uint8_t *BitStream, size_t *size, size_t *startIdx, uint32_t *hi, uint64_t *lo);
57extern int FDXBdemodBI(uint8_t *dest, size_t *size);
58extern int gProxII_Demod(uint8_t BitStream[], size_t *size);
59extern int HIDdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo);
60extern int IOdemodFSK(uint8_t *dest, size_t size);
61extern int indala26decode(uint8_t *bitStream, size_t *size, uint8_t *invert);
62extern int ParadoxdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo);
63extern int PrescoDemod(uint8_t *dest, size_t *size);
64extern int PyramiddemodFSK(uint8_t *dest, size_t *size);
65extern int VikingDemod_AM(uint8_t *dest, size_t *size);
66extern int Visa2kDemod_AM(uint8_t *dest, size_t *size);
67
eb191de6 68#endif
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