diff --git a/YSFGateway/DTMF.cpp b/YSFGateway/DTMF.cpp new file mode 100644 index 0000000..59b0571 --- /dev/null +++ b/YSFGateway/DTMF.cpp @@ -0,0 +1,160 @@ +/* + * Copyright (C) 2012,2013,2015,2017 by Jonathan Naylor G4KLX + * Copyright (C) 2011 by DV Developer Group. DJ0ABR + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "DTMF.h" + +const unsigned char DTMF_MASK[] = {0x82U, 0x08U, 0x20U, 0x82U, 0x00U, 0x00U, 0x82U, 0x00U, 0x00U}; +const unsigned char DTMF_SIG[] = {0x82U, 0x08U, 0x20U, 0x82U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U}; + +const unsigned char DTMF_SYM_MASK[] = {0x10U, 0x40U, 0x08U, 0x20U}; +const unsigned char DTMF_SYM0[] = {0x00U, 0x40U, 0x08U, 0x20U}; +const unsigned char DTMF_SYM1[] = {0x00U, 0x00U, 0x00U, 0x00U}; +const unsigned char DTMF_SYM2[] = {0x00U, 0x40U, 0x00U, 0x00U}; +const unsigned char DTMF_SYM3[] = {0x10U, 0x00U, 0x00U, 0x00U}; +const unsigned char DTMF_SYM4[] = {0x00U, 0x00U, 0x00U, 0x20U}; +const unsigned char DTMF_SYM5[] = {0x00U, 0x40U, 0x00U, 0x20U}; +const unsigned char DTMF_SYM6[] = {0x10U, 0x00U, 0x00U, 0x20U}; +const unsigned char DTMF_SYM7[] = {0x00U, 0x00U, 0x08U, 0x00U}; +const unsigned char DTMF_SYM8[] = {0x00U, 0x40U, 0x08U, 0x00U}; +const unsigned char DTMF_SYM9[] = {0x10U, 0x00U, 0x08U, 0x00U}; +const unsigned char DTMF_SYMA[] = {0x10U, 0x40U, 0x00U, 0x00U}; +const unsigned char DTMF_SYMB[] = {0x10U, 0x40U, 0x00U, 0x20U}; +const unsigned char DTMF_SYMC[] = {0x10U, 0x40U, 0x08U, 0x00U}; +const unsigned char DTMF_SYMD[] = {0x10U, 0x40U, 0x08U, 0x20U}; +const unsigned char DTMF_SYMS[] = {0x00U, 0x00U, 0x08U, 0x20U}; +const unsigned char DTMF_SYMH[] = {0x10U, 0x00U, 0x08U, 0x20U}; + +CDTMF::CDTMF() : +m_data(), +m_command(), +m_pressed(false), +m_releaseCount(0U), +m_pressCount(0U), +m_lastChar(' ') +{ +} + +CDTMF::~CDTMF() +{ +} + +bool CDTMF::decode(const unsigned char* ambe, bool end) +{ + // DTMF begins with these byte values + if (!end && (ambe[0] & DTMF_MASK[0]) == DTMF_SIG[0] && (ambe[1] & DTMF_MASK[1]) == DTMF_SIG[1] && + (ambe[2] & DTMF_MASK[2]) == DTMF_SIG[2] && (ambe[3] & DTMF_MASK[3]) == DTMF_SIG[3] && + (ambe[4] & DTMF_MASK[4]) == DTMF_SIG[4] && (ambe[5] & DTMF_MASK[5]) == DTMF_SIG[5] && + (ambe[6] & DTMF_MASK[6]) == DTMF_SIG[6] && (ambe[7] & DTMF_MASK[7]) == DTMF_SIG[7] && + (ambe[8] & DTMF_MASK[8]) == DTMF_SIG[8]) { + unsigned char sym0 = ambe[4] & DTMF_SYM_MASK[0]; + unsigned char sym1 = ambe[5] & DTMF_SYM_MASK[1]; + unsigned char sym2 = ambe[7] & DTMF_SYM_MASK[2]; + unsigned char sym3 = ambe[8] & DTMF_SYM_MASK[3]; + + char c = ' '; + if (sym0 == DTMF_SYM0[0] && sym1 == DTMF_SYM0[1] && sym2 == DTMF_SYM0[2] && sym3 == DTMF_SYM0[3]) + c = '0'; + else if (sym0 == DTMF_SYM1[0] && sym1 == DTMF_SYM1[1] && sym2 == DTMF_SYM1[2] && sym3 == DTMF_SYM1[3]) + c = '1'; + else if (sym0 == DTMF_SYM2[0] && sym1 == DTMF_SYM2[1] && sym2 == DTMF_SYM2[2] && sym3 == DTMF_SYM2[3]) + c = '2'; + else if (sym0 == DTMF_SYM3[0] && sym1 == DTMF_SYM3[1] && sym2 == DTMF_SYM3[2] && sym3 == DTMF_SYM3[3]) + c = '3'; + else if (sym0 == DTMF_SYM4[0] && sym1 == DTMF_SYM4[1] && sym2 == DTMF_SYM4[2] && sym3 == DTMF_SYM4[3]) + c = '4'; + else if (sym0 == DTMF_SYM5[0] && sym1 == DTMF_SYM5[1] && sym2 == DTMF_SYM5[2] && sym3 == DTMF_SYM5[3]) + c = '5'; + else if (sym0 == DTMF_SYM6[0] && sym1 == DTMF_SYM6[1] && sym2 == DTMF_SYM6[2] && sym3 == DTMF_SYM6[3]) + c = '6'; + else if (sym0 == DTMF_SYM7[0] && sym1 == DTMF_SYM7[1] && sym2 == DTMF_SYM7[2] && sym3 == DTMF_SYM7[3]) + c = '7'; + else if (sym0 == DTMF_SYM8[0] && sym1 == DTMF_SYM8[1] && sym2 == DTMF_SYM8[2] && sym3 == DTMF_SYM8[3]) + c = '8'; + else if (sym0 == DTMF_SYM9[0] && sym1 == DTMF_SYM9[1] && sym2 == DTMF_SYM9[2] && sym3 == DTMF_SYM9[3]) + c = '9'; + else if (sym0 == DTMF_SYMA[0] && sym1 == DTMF_SYMA[1] && sym2 == DTMF_SYMA[2] && sym3 == DTMF_SYMA[3]) + c = 'A'; + else if (sym0 == DTMF_SYMB[0] && sym1 == DTMF_SYMB[1] && sym2 == DTMF_SYMB[2] && sym3 == DTMF_SYMB[3]) + c = 'B'; + else if (sym0 == DTMF_SYMC[0] && sym1 == DTMF_SYMC[1] && sym2 == DTMF_SYMC[2] && sym3 == DTMF_SYMC[3]) + c = 'C'; + else if (sym0 == DTMF_SYMD[0] && sym1 == DTMF_SYMD[1] && sym2 == DTMF_SYMD[2] && sym3 == DTMF_SYMD[3]) + c = 'D'; + else if (sym0 == DTMF_SYMS[0] && sym1 == DTMF_SYMS[1] && sym2 == DTMF_SYMS[2] && sym3 == DTMF_SYMS[3]) + c = '*'; + else if (sym0 == DTMF_SYMH[0] && sym1 == DTMF_SYMH[1] && sym2 == DTMF_SYMH[2] && sym3 == DTMF_SYMH[3]) + c = '#'; + + if (c == m_lastChar) { + m_pressCount++; + } else { + m_lastChar = c; + m_pressCount = 0U; + } + + if (c != ' ' && !m_pressed && m_pressCount >= 3U) { + m_data += c; + m_releaseCount = 0U; + m_pressed = true; + } + + return c != ' '; + } else { + // If it is not a DTMF Code + if ((end || m_releaseCount >= 100U) && m_data.length() > 0U) { + m_command = m_data; + m_data.clear(); + m_releaseCount = 0U; + } + + m_pressed = false; + m_releaseCount++; + m_pressCount = 0U; + m_lastChar = ' '; + + return false; + } +} + +bool CDTMF::hasCommand() const +{ + return !m_command.empty(); +} + +// DTMF to YOUR call command +std::string CDTMF::translate() +{ + std::string command = m_command; + m_command.clear(); + + if (command.at(0U) == '#') + return command; + + return ""; +} + +void CDTMF::reset() +{ + m_data.clear(); + m_command.clear(); + m_pressed = false; + m_pressCount = 0U; + m_releaseCount = 0U; + m_lastChar = ' '; +} diff --git a/YSFGateway/DTMF.h b/YSFGateway/DTMF.h new file mode 100644 index 0000000..c2c56bb --- /dev/null +++ b/YSFGateway/DTMF.h @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2012,2013,2017 by Jonathan Naylor G4KLX + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef DTMF_H +#define DTMF_H + +#include + +class CDTMF { +public: + CDTMF(); + ~CDTMF(); + + bool decode(const unsigned char* ambe, bool end); + + bool hasCommand() const; + + std::string translate(); + + void reset(); + +private: + std::string m_data; + std::string m_command; + bool m_pressed; + unsigned int m_releaseCount; + unsigned int m_pressCount; + char m_lastChar; +}; + +#endif