| 1 | /* |
| 2 | * This file is part of the libCEC(R) library. |
| 3 | * |
| 4 | * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited. All rights reserved. |
| 5 | * libCEC(R) is an original work, containing original code. |
| 6 | * |
| 7 | * libCEC(R) is a trademark of Pulse-Eight Limited. |
| 8 | * |
| 9 | * This program is dual-licensed; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 22 | * |
| 23 | * |
| 24 | * Alternatively, you can license this library under a commercial license, |
| 25 | * please contact Pulse-Eight Licensing for more information. |
| 26 | * |
| 27 | * For more information contact: |
| 28 | * Pulse-Eight Licensing <license@pulse-eight.com> |
| 29 | * http://www.pulse-eight.com/ |
| 30 | * http://www.pulse-eight.net/ |
| 31 | */ |
| 32 | |
| 33 | #include "USBCECAdapterCommunication.h" |
| 34 | #include "../platform/sockets/serialport.h" |
| 35 | #include "../platform/util/timeutils.h" |
| 36 | #include "../LibCEC.h" |
| 37 | #include "../CECProcessor.h" |
| 38 | |
| 39 | using namespace std; |
| 40 | using namespace CEC; |
| 41 | using namespace PLATFORM; |
| 42 | |
| 43 | CUSBCECAdapterCommunication::CUSBCECAdapterCommunication(CCECProcessor *processor, const char *strPort, uint16_t iBaudRate /* = 38400 */) : |
| 44 | m_port(NULL), |
| 45 | m_processor(processor), |
| 46 | m_iLineTimeout(0), |
| 47 | m_iFirmwareVersion(CEC_FW_VERSION_UNKNOWN), |
| 48 | m_lastInitiator(CECDEVICE_UNKNOWN), |
| 49 | m_bNextIsEscaped(false), |
| 50 | m_bGotStart(false) |
| 51 | { |
| 52 | m_port = new PLATFORM::CSerialPort(strPort, iBaudRate); |
| 53 | } |
| 54 | |
| 55 | CUSBCECAdapterCommunication::~CUSBCECAdapterCommunication(void) |
| 56 | { |
| 57 | Close(); |
| 58 | } |
| 59 | |
| 60 | bool CUSBCECAdapterCommunication::Open(uint32_t iTimeoutMs /* = 10000 */) |
| 61 | { |
| 62 | uint64_t iNow = GetTimeMs(); |
| 63 | uint64_t iTimeout = iNow + iTimeoutMs; |
| 64 | |
| 65 | CLockObject lock(m_mutex); |
| 66 | |
| 67 | if (!m_port) |
| 68 | { |
| 69 | CLibCEC::AddLog(CEC_LOG_ERROR, "port is NULL"); |
| 70 | return false; |
| 71 | } |
| 72 | |
| 73 | if (IsOpen()) |
| 74 | { |
| 75 | CLibCEC::AddLog(CEC_LOG_ERROR, "port is already open"); |
| 76 | return true; |
| 77 | } |
| 78 | |
| 79 | CStdString strError; |
| 80 | bool bConnected(false); |
| 81 | while (!bConnected && iNow < iTimeout) |
| 82 | { |
| 83 | if ((bConnected = m_port->Open(iTimeout)) == false) |
| 84 | { |
| 85 | strError.Format("error opening serial port '%s': %s", m_port->GetName().c_str(), m_port->GetError().c_str()); |
| 86 | Sleep(250); |
| 87 | iNow = GetTimeMs(); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | if (!bConnected) |
| 92 | { |
| 93 | CLibCEC::AddLog(CEC_LOG_ERROR, strError); |
| 94 | return false; |
| 95 | } |
| 96 | |
| 97 | CLibCEC::AddLog(CEC_LOG_DEBUG, "connection opened, clearing any previous input and waiting for active transmissions to end before starting"); |
| 98 | |
| 99 | //clear any input bytes |
| 100 | uint8_t buff[1024]; |
| 101 | while (m_port->Read(buff, 1024, 100) > 0) |
| 102 | { |
| 103 | CLibCEC::AddLog(CEC_LOG_DEBUG, "data received, clearing it"); |
| 104 | Sleep(250); |
| 105 | } |
| 106 | |
| 107 | if (CreateThread()) |
| 108 | { |
| 109 | CLibCEC::AddLog(CEC_LOG_DEBUG, "communication thread started"); |
| 110 | return true; |
| 111 | } |
| 112 | else |
| 113 | { |
| 114 | CLibCEC::AddLog(CEC_LOG_ERROR, "could not create a communication thread"); |
| 115 | } |
| 116 | |
| 117 | return false; |
| 118 | } |
| 119 | |
| 120 | void CUSBCECAdapterCommunication::Close(void) |
| 121 | { |
| 122 | CLockObject lock(m_mutex); |
| 123 | m_rcvCondition.Broadcast(); |
| 124 | StopThread(); |
| 125 | } |
| 126 | |
| 127 | void *CUSBCECAdapterCommunication::Process(void) |
| 128 | { |
| 129 | while (!IsStopped()) |
| 130 | { |
| 131 | ReadFromDevice(50); |
| 132 | Sleep(5); |
| 133 | WriteNextCommand(); |
| 134 | } |
| 135 | |
| 136 | CCECAdapterMessage *msg(NULL); |
| 137 | if (m_outBuffer.Pop(msg)) |
| 138 | msg->condition.Broadcast(); |
| 139 | |
| 140 | if (m_port) |
| 141 | { |
| 142 | delete m_port; |
| 143 | m_port = NULL; |
| 144 | } |
| 145 | |
| 146 | return NULL; |
| 147 | } |
| 148 | |
| 149 | cec_adapter_message_state CUSBCECAdapterCommunication::Write(const cec_command &data, uint8_t iMaxTries, uint8_t iLineTimeout /* = 3 */, uint8_t iRetryLineTimeout /* = 3 */) |
| 150 | { |
| 151 | cec_adapter_message_state retVal(ADAPTER_MESSAGE_STATE_UNKNOWN); |
| 152 | |
| 153 | CCECAdapterMessage *output = new CCECAdapterMessage(data); |
| 154 | |
| 155 | /* set the number of retries */ |
| 156 | if (data.opcode == CEC_OPCODE_NONE) //TODO |
| 157 | output->maxTries = 1; |
| 158 | else if (data.initiator != CECDEVICE_BROADCAST) |
| 159 | output->maxTries = iMaxTries; |
| 160 | |
| 161 | output->lineTimeout = iLineTimeout; |
| 162 | output->retryTimeout = iRetryLineTimeout; |
| 163 | output->tries = 0; |
| 164 | |
| 165 | bool bRetry(true); |
| 166 | while (bRetry && ++output->tries < output->maxTries) |
| 167 | { |
| 168 | bRetry = (!Write(output) || output->NeedsRetry()) && output->transmit_timeout > 0; |
| 169 | if (bRetry) |
| 170 | Sleep(CEC_DEFAULT_TRANSMIT_RETRY_WAIT); |
| 171 | } |
| 172 | retVal = output->state; |
| 173 | |
| 174 | delete output; |
| 175 | return retVal; |
| 176 | } |
| 177 | |
| 178 | bool CUSBCECAdapterCommunication::Write(CCECAdapterMessage *data) |
| 179 | { |
| 180 | bool bReturn(false); |
| 181 | |
| 182 | CLockObject lock(data->mutex); |
| 183 | data->state = ADAPTER_MESSAGE_STATE_WAITING_TO_BE_SENT; |
| 184 | m_outBuffer.Push(data); |
| 185 | data->condition.Wait(data->mutex); |
| 186 | |
| 187 | if (data->state != ADAPTER_MESSAGE_STATE_SENT) |
| 188 | { |
| 189 | CLibCEC::AddLog(CEC_LOG_ERROR, "command was not sent"); |
| 190 | } |
| 191 | else if (data->expectControllerAck) |
| 192 | { |
| 193 | bReturn = WaitForAck(*data); |
| 194 | if (bReturn) |
| 195 | { |
| 196 | if (data->isTransmission) |
| 197 | data->state = ADAPTER_MESSAGE_STATE_SENT_ACKED; |
| 198 | } |
| 199 | else |
| 200 | { |
| 201 | data->state = ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED; |
| 202 | CLibCEC::AddLog(CEC_LOG_DEBUG, "did not receive ack"); |
| 203 | } |
| 204 | } |
| 205 | else |
| 206 | { |
| 207 | bReturn = true; |
| 208 | } |
| 209 | |
| 210 | return bReturn; |
| 211 | } |
| 212 | |
| 213 | bool CUSBCECAdapterCommunication::Read(cec_command &command, uint32_t iTimeout) |
| 214 | { |
| 215 | CCECAdapterMessage msg; |
| 216 | if (Read(msg, iTimeout)) |
| 217 | { |
| 218 | if (ParseMessage(msg)) |
| 219 | { |
| 220 | command = m_currentframe; |
| 221 | m_currentframe.Clear(); |
| 222 | return true; |
| 223 | } |
| 224 | } |
| 225 | return false; |
| 226 | } |
| 227 | |
| 228 | bool CUSBCECAdapterCommunication::Read(CCECAdapterMessage &msg, uint32_t iTimeout) |
| 229 | { |
| 230 | CLockObject lock(m_mutex); |
| 231 | |
| 232 | msg.Clear(); |
| 233 | CCECAdapterMessage *buf(NULL); |
| 234 | |
| 235 | if (!m_inBuffer.Pop(buf)) |
| 236 | { |
| 237 | if (!m_rcvCondition.Wait(m_mutex, iTimeout)) |
| 238 | return false; |
| 239 | m_inBuffer.Pop(buf); |
| 240 | } |
| 241 | |
| 242 | if (buf) |
| 243 | { |
| 244 | msg.packet = buf->packet; |
| 245 | msg.state = msg.state = ADAPTER_MESSAGE_STATE_INCOMING; |
| 246 | delete buf; |
| 247 | return true; |
| 248 | } |
| 249 | return false; |
| 250 | } |
| 251 | |
| 252 | CStdString CUSBCECAdapterCommunication::GetError(void) const |
| 253 | { |
| 254 | CStdString strError; |
| 255 | strError = m_port->GetError(); |
| 256 | return strError; |
| 257 | } |
| 258 | |
| 259 | bool CUSBCECAdapterCommunication::StartBootloader(void) |
| 260 | { |
| 261 | bool bReturn(false); |
| 262 | if (!IsRunning()) |
| 263 | return bReturn; |
| 264 | |
| 265 | CLibCEC::AddLog(CEC_LOG_DEBUG, "starting the bootloader"); |
| 266 | CCECAdapterMessage *output = new CCECAdapterMessage; |
| 267 | |
| 268 | output->PushBack(MSGSTART); |
| 269 | output->PushEscaped(MSGCODE_START_BOOTLOADER); |
| 270 | output->PushBack(MSGEND); |
| 271 | output->isTransmission = false; |
| 272 | output->expectControllerAck = false; |
| 273 | |
| 274 | if ((bReturn = Write(output)) == false) |
| 275 | CLibCEC::AddLog(CEC_LOG_ERROR, "could not start the bootloader"); |
| 276 | delete output; |
| 277 | |
| 278 | return bReturn; |
| 279 | } |
| 280 | |
| 281 | bool CUSBCECAdapterCommunication::PingAdapter(void) |
| 282 | { |
| 283 | bool bReturn(false); |
| 284 | if (!IsRunning()) |
| 285 | return bReturn; |
| 286 | |
| 287 | CLibCEC::AddLog(CEC_LOG_DEBUG, "sending ping"); |
| 288 | CCECAdapterMessage *output = new CCECAdapterMessage; |
| 289 | |
| 290 | output->PushBack(MSGSTART); |
| 291 | output->PushEscaped(MSGCODE_PING); |
| 292 | output->PushBack(MSGEND); |
| 293 | output->isTransmission = false; |
| 294 | |
| 295 | if ((bReturn = Write(output)) == false) |
| 296 | CLibCEC::AddLog(CEC_LOG_ERROR, "could not ping the adapter"); |
| 297 | delete output; |
| 298 | |
| 299 | return bReturn; |
| 300 | } |
| 301 | |
| 302 | bool CUSBCECAdapterCommunication::ParseMessage(const CCECAdapterMessage &msg) |
| 303 | { |
| 304 | bool bEom(false); |
| 305 | bool bIsError(msg.IsError()); |
| 306 | |
| 307 | if (msg.IsEmpty()) |
| 308 | return bEom; |
| 309 | |
| 310 | switch(msg.Message()) |
| 311 | { |
| 312 | case MSGCODE_FRAME_START: |
| 313 | { |
| 314 | m_currentframe.Clear(); |
| 315 | if (msg.Size() >= 2) |
| 316 | { |
| 317 | m_currentframe.initiator = msg.Initiator(); |
| 318 | m_currentframe.destination = msg.Destination(); |
| 319 | m_currentframe.ack = msg.IsACK(); |
| 320 | m_currentframe.eom = msg.IsEOM(); |
| 321 | } |
| 322 | if (m_currentframe.ack == 0x1) |
| 323 | { |
| 324 | m_lastInitiator = m_currentframe.initiator; |
| 325 | m_processor->HandlePoll(m_currentframe.initiator, m_currentframe.destination); |
| 326 | } |
| 327 | } |
| 328 | break; |
| 329 | case MSGCODE_RECEIVE_FAILED: |
| 330 | { |
| 331 | m_currentframe.Clear(); |
| 332 | if (m_lastInitiator != CECDEVICE_UNKNOWN) |
| 333 | bIsError = m_processor->HandleReceiveFailed(m_lastInitiator); |
| 334 | } |
| 335 | break; |
| 336 | case MSGCODE_FRAME_DATA: |
| 337 | { |
| 338 | if (msg.Size() >= 2) |
| 339 | { |
| 340 | m_currentframe.PushBack(msg[1]); |
| 341 | m_currentframe.eom = msg.IsEOM(); |
| 342 | } |
| 343 | bEom = msg.IsEOM(); |
| 344 | } |
| 345 | break; |
| 346 | default: |
| 347 | break; |
| 348 | } |
| 349 | |
| 350 | CLibCEC::AddLog(bIsError ? CEC_LOG_WARNING : CEC_LOG_DEBUG, msg.ToString()); |
| 351 | return bEom; |
| 352 | } |
| 353 | |
| 354 | uint16_t CUSBCECAdapterCommunication::GetFirmwareVersion(void) |
| 355 | { |
| 356 | uint16_t iReturn(m_iFirmwareVersion); |
| 357 | if (!IsRunning()) |
| 358 | return iReturn; |
| 359 | |
| 360 | if (iReturn == CEC_FW_VERSION_UNKNOWN) |
| 361 | { |
| 362 | CLibCEC::AddLog(CEC_LOG_DEBUG, "requesting the firmware version"); |
| 363 | CCECAdapterMessage *output = new CCECAdapterMessage; |
| 364 | |
| 365 | output->PushBack(MSGSTART); |
| 366 | output->PushEscaped(MSGCODE_FIRMWARE_VERSION); |
| 367 | output->PushBack(MSGEND); |
| 368 | output->isTransmission = false; |
| 369 | output->expectControllerAck = false; |
| 370 | |
| 371 | SendMessageToAdapter(output); |
| 372 | delete output; |
| 373 | |
| 374 | CCECAdapterMessage input; |
| 375 | if (!Read(input, CEC_DEFAULT_TRANSMIT_WAIT) || input.Message() != MSGCODE_FIRMWARE_VERSION || input.Size() != 3) |
| 376 | CLibCEC::AddLog(CEC_LOG_ERROR, "no or invalid firmware version (size = %d, message = %d)", input.Size(), input.Message()); |
| 377 | else |
| 378 | { |
| 379 | m_iFirmwareVersion = (input[1] << 8 | input[2]); |
| 380 | iReturn = m_iFirmwareVersion; |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | return iReturn; |
| 385 | } |
| 386 | |
| 387 | bool CUSBCECAdapterCommunication::SetLineTimeout(uint8_t iTimeout) |
| 388 | { |
| 389 | m_iLineTimeout = iTimeout; |
| 390 | return true; |
| 391 | //TODO |
| 392 | // bool bReturn(m_iLineTimeout != iTimeout); |
| 393 | // |
| 394 | // if (!bReturn) |
| 395 | // { |
| 396 | // CCECAdapterMessage *output = new CCECAdapterMessage; |
| 397 | // |
| 398 | // output->PushBack(MSGSTART); |
| 399 | // output->PushEscaped(MSGCODE_TRANSMIT_IDLETIME); |
| 400 | // output->PushEscaped(iTimeout); |
| 401 | // output->PushBack(MSGEND); |
| 402 | // output->isTransmission = false; |
| 403 | // |
| 404 | // if ((bReturn = Write(output)) == false) |
| 405 | // CLibCEC::AddLog(CEC_LOG_ERROR, "could not set the idletime"); |
| 406 | // delete output; |
| 407 | // } |
| 408 | // |
| 409 | // return bReturn; |
| 410 | } |
| 411 | |
| 412 | bool CUSBCECAdapterCommunication::SetAckMask(uint16_t iMask) |
| 413 | { |
| 414 | bool bReturn(false); |
| 415 | CStdString strLog; |
| 416 | strLog.Format("setting ackmask to %2x", iMask); |
| 417 | CLibCEC::AddLog(CEC_LOG_DEBUG, strLog.c_str()); |
| 418 | |
| 419 | CCECAdapterMessage *output = new CCECAdapterMessage; |
| 420 | |
| 421 | output->PushBack(MSGSTART); |
| 422 | output->PushEscaped(MSGCODE_SET_ACK_MASK); |
| 423 | output->PushEscaped(iMask >> 8); |
| 424 | output->PushEscaped((uint8_t)iMask); |
| 425 | output->PushBack(MSGEND); |
| 426 | output->isTransmission = false; |
| 427 | |
| 428 | if ((bReturn = Write(output)) == false) |
| 429 | CLibCEC::AddLog(CEC_LOG_ERROR, "could not set the ackmask"); |
| 430 | delete output; |
| 431 | |
| 432 | return bReturn; |
| 433 | } |
| 434 | |
| 435 | |
| 436 | bool CUSBCECAdapterCommunication::SetControlledMode(bool controlled) |
| 437 | { |
| 438 | bool bReturn(false); |
| 439 | CStdString strLog; |
| 440 | strLog.Format("turning controlled mode %s", controlled ? "on" : "off"); |
| 441 | CLibCEC::AddLog(CEC_LOG_DEBUG, strLog.c_str()); |
| 442 | |
| 443 | CCECAdapterMessage *output = new CCECAdapterMessage; |
| 444 | |
| 445 | output->PushBack(MSGSTART); |
| 446 | output->PushEscaped(MSGCODE_SET_CONTROLLED); |
| 447 | output->PushEscaped(controlled); |
| 448 | output->PushBack(MSGEND); |
| 449 | output->isTransmission = false; |
| 450 | |
| 451 | if ((bReturn = Write(output)) == false) |
| 452 | CLibCEC::AddLog(CEC_LOG_ERROR, "could not set controlled mode"); |
| 453 | delete output; |
| 454 | |
| 455 | return bReturn; |
| 456 | } |
| 457 | |
| 458 | bool CUSBCECAdapterCommunication::IsOpen(void) |
| 459 | { |
| 460 | return !IsStopped() && m_port->IsOpen() && IsRunning(); |
| 461 | } |
| 462 | |
| 463 | bool CUSBCECAdapterCommunication::WaitForAck(CCECAdapterMessage &message) |
| 464 | { |
| 465 | bool bError(false); |
| 466 | bool bTransmitSucceeded(false); |
| 467 | uint8_t iPacketsLeft(message.Size() / 4); |
| 468 | |
| 469 | int64_t iNow = GetTimeMs(); |
| 470 | int64_t iTargetTime = iNow + message.transmit_timeout; |
| 471 | |
| 472 | while (!bTransmitSucceeded && !bError && (message.transmit_timeout == 0 || iNow < iTargetTime)) |
| 473 | { |
| 474 | CCECAdapterMessage msg; |
| 475 | int32_t iWait = (int32_t)(iTargetTime - iNow); |
| 476 | if (iWait <= 5 || message.transmit_timeout <= 5) |
| 477 | iWait = CEC_DEFAULT_TRANSMIT_WAIT; |
| 478 | |
| 479 | if (!Read(msg, iWait)) |
| 480 | { |
| 481 | iNow = GetTimeMs(); |
| 482 | continue; |
| 483 | } |
| 484 | |
| 485 | if (msg.Message() == MSGCODE_FRAME_START && msg.IsACK()) |
| 486 | { |
| 487 | m_processor->HandlePoll(msg.Initiator(), msg.Destination()); |
| 488 | m_lastInitiator = msg.Initiator(); |
| 489 | iNow = GetTimeMs(); |
| 490 | continue; |
| 491 | } |
| 492 | |
| 493 | if (msg.Message() == MSGCODE_RECEIVE_FAILED && |
| 494 | m_lastInitiator != CECDEVICE_UNKNOWN && |
| 495 | m_processor->HandleReceiveFailed(m_lastInitiator)) |
| 496 | { |
| 497 | iNow = GetTimeMs(); |
| 498 | continue; |
| 499 | } |
| 500 | |
| 501 | bError = msg.IsError(); |
| 502 | if (bError) |
| 503 | { |
| 504 | message.reply = msg.Message(); |
| 505 | CLibCEC::AddLog(CEC_LOG_DEBUG, msg.ToString()); |
| 506 | } |
| 507 | else |
| 508 | { |
| 509 | switch(msg.Message()) |
| 510 | { |
| 511 | case MSGCODE_COMMAND_ACCEPTED: |
| 512 | CLibCEC::AddLog(CEC_LOG_DEBUG, msg.ToString()); |
| 513 | if (iPacketsLeft > 0) |
| 514 | iPacketsLeft--; |
| 515 | if (!message.isTransmission && iPacketsLeft == 0) |
| 516 | bTransmitSucceeded = true; |
| 517 | break; |
| 518 | case MSGCODE_TRANSMIT_SUCCEEDED: |
| 519 | CLibCEC::AddLog(CEC_LOG_DEBUG, msg.ToString()); |
| 520 | bTransmitSucceeded = (iPacketsLeft == 0); |
| 521 | bError = !bTransmitSucceeded; |
| 522 | message.reply = MSGCODE_TRANSMIT_SUCCEEDED; |
| 523 | break; |
| 524 | default: |
| 525 | // ignore other data while waiting |
| 526 | break; |
| 527 | } |
| 528 | |
| 529 | iNow = GetTimeMs(); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | return bTransmitSucceeded && !bError; |
| 534 | } |
| 535 | |
| 536 | void CUSBCECAdapterCommunication::AddData(uint8_t *data, size_t iLen) |
| 537 | { |
| 538 | CLockObject lock(m_mutex); |
| 539 | for (size_t iPtr = 0; iPtr < iLen; iPtr++) |
| 540 | { |
| 541 | if (!m_bGotStart) |
| 542 | { |
| 543 | if (data[iPtr] == MSGSTART) |
| 544 | m_bGotStart = true; |
| 545 | } |
| 546 | else if (data[iPtr] == MSGSTART) //we found a msgstart before msgend, this is not right, remove |
| 547 | { |
| 548 | if (m_currentAdapterMessage.Size() > 0) |
| 549 | CLibCEC::AddLog(CEC_LOG_WARNING, "received MSGSTART before MSGEND, removing previous buffer contents"); |
| 550 | m_currentAdapterMessage.Clear(); |
| 551 | m_bGotStart = true; |
| 552 | } |
| 553 | else if (data[iPtr] == MSGEND) |
| 554 | { |
| 555 | CCECAdapterMessage *newMessage = new CCECAdapterMessage; |
| 556 | newMessage->packet = m_currentAdapterMessage.packet; |
| 557 | m_inBuffer.Push(newMessage); |
| 558 | m_currentAdapterMessage.Clear(); |
| 559 | m_bGotStart = false; |
| 560 | m_bNextIsEscaped = false; |
| 561 | m_rcvCondition.Signal(); |
| 562 | } |
| 563 | else if (m_bNextIsEscaped) |
| 564 | { |
| 565 | m_currentAdapterMessage.PushBack(data[iPtr] + (uint8_t)ESCOFFSET); |
| 566 | m_bNextIsEscaped = false; |
| 567 | } |
| 568 | else if (data[iPtr] == MSGESC) |
| 569 | { |
| 570 | m_bNextIsEscaped = true; |
| 571 | } |
| 572 | else |
| 573 | { |
| 574 | m_currentAdapterMessage.PushBack(data[iPtr]); |
| 575 | } |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | bool CUSBCECAdapterCommunication::ReadFromDevice(uint32_t iTimeout) |
| 580 | { |
| 581 | ssize_t iBytesRead; |
| 582 | uint8_t buff[256]; |
| 583 | if (!m_port) |
| 584 | return false; |
| 585 | |
| 586 | CLockObject lock(m_mutex); |
| 587 | iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout); |
| 588 | if (iBytesRead < 0 || iBytesRead > 256) |
| 589 | { |
| 590 | CLibCEC::AddLog(CEC_LOG_ERROR, "error reading from serial port: %s", m_port->GetError().c_str()); |
| 591 | return false; |
| 592 | } |
| 593 | else if (iBytesRead > 0) |
| 594 | { |
| 595 | AddData(buff, iBytesRead); |
| 596 | } |
| 597 | |
| 598 | return iBytesRead > 0; |
| 599 | } |
| 600 | |
| 601 | void CUSBCECAdapterCommunication::SendMessageToAdapter(CCECAdapterMessage *msg) |
| 602 | { |
| 603 | CLockObject adapterLock(m_mutex); |
| 604 | CLockObject lock(msg->mutex); |
| 605 | if (msg->tries == 1) |
| 606 | SetLineTimeout(msg->lineTimeout); |
| 607 | else |
| 608 | SetLineTimeout(msg->retryTimeout); |
| 609 | |
| 610 | if (m_port->Write(msg->packet.data, msg->Size()) != (ssize_t) msg->Size()) |
| 611 | { |
| 612 | CStdString strError; |
| 613 | strError.Format("error writing to serial port: %s", m_port->GetError().c_str()); |
| 614 | CLibCEC::AddLog(CEC_LOG_ERROR, strError); |
| 615 | msg->state = ADAPTER_MESSAGE_STATE_ERROR; |
| 616 | } |
| 617 | else |
| 618 | { |
| 619 | CLibCEC::AddLog(CEC_LOG_DEBUG, "command sent"); |
| 620 | msg->state = ADAPTER_MESSAGE_STATE_SENT; |
| 621 | } |
| 622 | msg->condition.Signal(); |
| 623 | } |
| 624 | |
| 625 | void CUSBCECAdapterCommunication::WriteNextCommand(void) |
| 626 | { |
| 627 | CCECAdapterMessage *msg(NULL); |
| 628 | if (m_outBuffer.Pop(msg)) |
| 629 | SendMessageToAdapter(msg); |
| 630 | } |