| 1 | #pragma once |
| 2 | /* |
| 3 | * This file is part of the libCEC(R) library. |
| 4 | * |
| 5 | * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited. All rights reserved. |
| 6 | * libCEC(R) is an original work, containing original code. |
| 7 | * |
| 8 | * libCEC(R) is a trademark of Pulse-Eight Limited. |
| 9 | * |
| 10 | * This program is dual-licensed; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 23 | * |
| 24 | * |
| 25 | * Alternatively, you can license this library under a commercial license, |
| 26 | * please contact Pulse-Eight Licensing for more information. |
| 27 | * |
| 28 | * For more information contact: |
| 29 | * Pulse-Eight Licensing <license@pulse-eight.com> |
| 30 | * http://www.pulse-eight.com/ |
| 31 | * http://www.pulse-eight.net/ |
| 32 | */ |
| 33 | |
| 34 | #include <cectypes.h> |
| 35 | #include "platform/threads.h" |
| 36 | #include "util/buffer.h" |
| 37 | #include <string> |
| 38 | |
| 39 | namespace CEC |
| 40 | { |
| 41 | class CCECAdapterMessage |
| 42 | { |
| 43 | public: |
| 44 | CCECAdapterMessage(void) {} |
| 45 | CCECAdapterMessage(const cec_command &command) |
| 46 | { |
| 47 | clear(); |
| 48 | |
| 49 | //set ack polarity to high when transmitting to the broadcast address |
| 50 | //set ack polarity low when transmitting to any other address |
| 51 | push_back(MSGSTART); |
| 52 | push_escaped(MSGCODE_TRANSMIT_ACK_POLARITY); |
| 53 | if (command.destination == CECDEVICE_BROADCAST) |
| 54 | push_escaped(CEC_TRUE); |
| 55 | else |
| 56 | push_escaped(CEC_FALSE); |
| 57 | push_back(MSGEND); |
| 58 | |
| 59 | // add source and destination |
| 60 | push_back(MSGSTART); |
| 61 | push_escaped(MSGCODE_TRANSMIT); |
| 62 | push_back(((uint8_t)command.initiator << 4) + (uint8_t)command.destination); |
| 63 | push_back(MSGEND); |
| 64 | |
| 65 | // add opcode |
| 66 | push_back(MSGSTART); |
| 67 | push_escaped(command.parameters.empty() ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT); |
| 68 | push_back((uint8_t) command.opcode); |
| 69 | push_back(MSGEND); |
| 70 | |
| 71 | // add parameters |
| 72 | for (int8_t iPtr = 0; iPtr < command.parameters.size; iPtr++) |
| 73 | { |
| 74 | push_back(MSGSTART); |
| 75 | |
| 76 | if (iPtr == command.parameters.size - 1) |
| 77 | push_escaped( MSGCODE_TRANSMIT_EOM); |
| 78 | else |
| 79 | push_escaped(MSGCODE_TRANSMIT); |
| 80 | |
| 81 | push_escaped(command.parameters[iPtr]); |
| 82 | |
| 83 | push_back(MSGEND); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | CCECAdapterMessage &operator =(const CCECAdapterMessage &msg) |
| 88 | { |
| 89 | packet = msg.packet; |
| 90 | return *this; |
| 91 | } |
| 92 | |
| 93 | bool empty(void) const { return packet.empty(); } |
| 94 | uint8_t operator[](uint8_t pos) const { return packet[pos]; } |
| 95 | uint8_t at(uint8_t pos) const { return packet[pos]; } |
| 96 | uint8_t size(void) const { return packet.size; } |
| 97 | void clear(void) { packet.clear(); } |
| 98 | void shift(uint8_t iShiftBy) { packet.shift(iShiftBy); } |
| 99 | void push_back(uint8_t add) { packet.push_back(add); } |
| 100 | cec_adapter_messagecode message(void) const { return packet.size >= 1 ? (cec_adapter_messagecode) (packet.at(0) & ~(MSGCODE_FRAME_EOM | MSGCODE_FRAME_ACK)) : MSGCODE_NOTHING; } |
| 101 | bool eom(void) const { return packet.size >= 1 ? (packet.at(0) & MSGCODE_FRAME_EOM) != 0 : false; } |
| 102 | bool ack(void) const { return packet.size >= 1 ? (packet.at(0) & MSGCODE_FRAME_ACK) != 0 : false; } |
| 103 | cec_logical_address initiator(void) const { return packet.size >= 2 ? (cec_logical_address) (packet.at(1) >> 4) : CECDEVICE_UNKNOWN; }; |
| 104 | cec_logical_address destination(void) const { return packet.size >= 2 ? (cec_logical_address) (packet.at(1) & 0xF) : CECDEVICE_UNKNOWN; }; |
| 105 | void push_escaped(int16_t byte) |
| 106 | { |
| 107 | if (byte >= MSGESC && byte != MSGSTART) |
| 108 | { |
| 109 | push_back(MSGESC); |
| 110 | push_back(byte - ESCOFFSET); |
| 111 | } |
| 112 | else |
| 113 | push_back(byte); |
| 114 | } |
| 115 | |
| 116 | cec_datapacket packet; |
| 117 | }; |
| 118 | |
| 119 | class CSerialPort; |
| 120 | class CLibCEC; |
| 121 | |
| 122 | class CAdapterCommunication : private CThread |
| 123 | { |
| 124 | public: |
| 125 | CAdapterCommunication(CLibCEC *controller); |
| 126 | virtual ~CAdapterCommunication(); |
| 127 | |
| 128 | bool Open(const char *strPort, uint16_t iBaudRate = 38400, uint32_t iTimeoutMs = 10000); |
| 129 | bool Read(CCECAdapterMessage &msg, uint32_t iTimeout = 1000); |
| 130 | bool Write(const CCECAdapterMessage &frame); |
| 131 | bool PingAdapter(void); |
| 132 | void Close(void); |
| 133 | bool IsOpen(void) const; |
| 134 | std::string GetError(void) const; |
| 135 | |
| 136 | void *Process(void); |
| 137 | |
| 138 | bool StartBootloader(void); |
| 139 | bool SetAckMask(uint16_t iMask); |
| 140 | |
| 141 | private: |
| 142 | void WriteNextCommand(void); |
| 143 | void AddData(uint8_t *data, uint8_t iLen); |
| 144 | bool ReadFromDevice(uint32_t iTimeout); |
| 145 | |
| 146 | CSerialPort * m_port; |
| 147 | CLibCEC * m_controller; |
| 148 | CecBuffer<uint8_t> m_inBuffer; |
| 149 | CecBuffer<CCECAdapterMessage> m_outBuffer; |
| 150 | CMutex m_bufferMutex; |
| 151 | CMutex m_commMutex; |
| 152 | CCondition m_rcvCondition; |
| 153 | }; |
| 154 | }; |