libs/backends/wavesaudio/wavesapi/devicemanager/WCMRPortAudioDeviceManager.cpp

   1 //----------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2008 Waves Audio Ltd. All rights reserved.
   4 //
   5 //! \file       WCMRPortAudioDeviceManager.cpp
   6 //!
   7 //! WCMRPortAudioDeviceManager and related class declarations
   8 //!
   9 //---------------------------------------------------------------------------------*/
  10 #include "WCMRPortAudioDeviceManager.h"
  11 #include "MiscUtils/safe_delete.h"
  12 #include "UMicroseconds.h"
  13 #include <iostream>
  14 #include <sstream>
  15 #include <algorithm>
  16 #include <list>
  17 using namespace wvNS;
  18 #include "IncludeWindows.h"
  19 #include <mmsystem.h>
  20 #include "pa_asio.h"
  21 #include "asio.h"
  22
  23 #define PROPERTY_CHANGE_SLEEP_TIME_MILLISECONDS 200
  24 #define DEVICE_INFO_UPDATE_SLEEP_TIME_MILLISECONDS 500
  25 #define PROPERTY_CHANGE_TIMEOUT_SECONDS 2
  26 #define PROPERTY_CHANGE_RETRIES 3
  27
  28 ///< Supported Sample rates
  29 static const double gAllSampleRates[] =
  30         {
  31                 44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0, -1 /* negative terminated  list */
  32         };
  33
  34
  35
  36 ///< Default Supported Buffer Sizes.
  37 static const int gAllBufferSizes[] =
  38         {
  39                 32, 64, 96, 128, 192, 256, 512, 1024, 2048
  40         };
  41
  42
  43 ///< The default SR.
  44 static const int DEFAULT_SR = 44100;
  45 ///< The default buffer size.
  46 static const int DEFAULT_BUFFERSIZE = 128;
  47
  48 static const int NONE_DEVICE_ID = -1;
  49
  50 ///< Number of stalls to wait before notifying user...
  51 static const int NUM_STALLS_FOR_NOTIFICATION = 100; // 100 corresponds to 100 x 42 ms idle timer - about 4 seconds.
  52 static const int CHANGE_CHECK_COUNTER_PERIOD = 100; // 120 corresponds to 120 x 42 ms idle timer - about 4 seconds.
  53
  54 #define HUNDRED_NANO_TO_MILLI_CONSTANT 10000
  55 #define CONSUMPTION_CALCULATION_INTERVAL 500 // Milli Seconds
  56
  57
  58 // This wrapper is used to adapt device DoIdle method as entry point for MS thread
  59 DWORD WINAPI WCMRPortAudioDevice::__DoIdle__(LPVOID lpThreadParameter)
  60 {
  61         WCMRPortAudioDevice* pDevice = (WCMRPortAudioDevice*)lpThreadParameter;
  62         pDevice->DoIdle();
  63         return 0;
  64 }
  65
  66 //**********************************************************************************************
  67 // WCMRPortAudioDevice::WCMRPortAudioDevice
  68 //
  69 //! Constructor for the audio device. Opens the PA device
  70 //! and gets information about the device.
  71 //! Starts the thread which will process requests to this device
  72 //!     such as determining supported sampling rates, buffer sizes, and channel counts.
  73 //!
  74 //! \param *pManager    : The audio device manager that's managing this device.
  75 //! \param deviceID             : The port audio device ID.
  76 //! \param useMultithreading : Whether to use multi-threading for audio processing. Default is true.
  77 //!
  78 //! \return Nothing.
  79 //!
  80 //**********************************************************************************************
  81 WCMRPortAudioDevice::WCMRPortAudioDevice (WCMRPortAudioDeviceManager *pManager, unsigned int deviceID, bool useMultithreading, bool bNoCopy) :
  82         WCMRNativeAudioDevice (pManager, useMultithreading, bNoCopy)
  83         , m_SampleCounter(0)
  84         , m_BufferSizeChangeRequested (0)
  85         , m_BufferSizeChangeReported (0)
  86         , m_ResetRequested (0)
  87         , m_ResetReported (0)
  88         , m_ResyncRequested (0)
  89         , m_ResyncReported (0)
  90         , m_DropsDetected(0)
  91         , m_DropsReported(0)
  92         , m_IgnoreThisDrop(true)
  93         , m_hDeviceProcessingThread(NULL)
  94         , m_DeviceProcessingThreadID(0)
  95         , m_hUpdateDeviceInfoRequestedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
  96         , m_hUpdateDeviceInfoDone(CreateEvent(NULL, FALSE, FALSE, NULL))
  97         , m_hActivateRequestedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
  98         , m_hActivationDone(CreateEvent(NULL, FALSE, FALSE, NULL))
  99         , m_hDeActivateRequestedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
 100         , m_hDeActivationDone(CreateEvent(NULL, FALSE, FALSE, NULL))
 101         , m_hStartStreamingRequestedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
 102         , m_hStartStreamingDone(CreateEvent(NULL, FALSE, FALSE, NULL))
 103         , m_hStopStreamingRequestedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
 104         , m_hStopStreamingDone(CreateEvent(NULL, FALSE, FALSE, NULL))
 105         , m_hResetRequestedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
 106         , m_hResetDone(CreateEvent(NULL, FALSE, FALSE, NULL))
 107         , m_hResetFromDevRequestedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
 108         , m_hBufferSizeChangedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
 109         , m_hSampleRateChangedEvent(CreateEvent(NULL, FALSE, FALSE, NULL))
 110         , m_hExitIdleThread(CreateEvent(NULL, FALSE, FALSE, NULL))
 111         , m_hDeviceInitialized(CreateEvent(NULL, FALSE, FALSE, NULL))
 112         , m_lastErr(eNoErr)
 113 {
 114     AUTO_FUNC_DEBUG;
 115
 116         //Set initial device info...
 117         m_DeviceID = deviceID;
 118         m_PortAudioStream = NULL;
 119         m_CurrentSamplingRate = DEFAULT_SR;
 120         m_CurrentBufferSize = DEFAULT_BUFFERSIZE;
 121         m_StopRequested = true;
 122         m_pInputData = NULL;
 123
 124         //initialize device processing thread
 125         //the divice become alive and now is able to process requests
 126         m_hDeviceProcessingThread = CreateThread( NULL, 0, __DoIdle__, (LPVOID)this, 0, &m_DeviceProcessingThreadID );
 127
 128         if (!m_hDeviceProcessingThread)
 129         {
 130                 DEBUG_MSG("API::Device " << m_DeviceName << " cannot create processing thread");
 131                 throw eGenericErr;
 132         }
 133
 134         WaitForSingleObject(m_hDeviceInitialized, INFINITE);
 135
 136         if (ConnectionStatus() == DeviceErrors)
 137         {
 138                 throw m_lastErr;
 139         }
 140 }
 141
 142
 143 void WCMRPortAudioDevice::initDevice()
 144 {
 145         // Initialize COM for this thread
 146         std::cout << "API::Device " << m_DeviceID << " initializing COM" << std::endl;
 147
 148         if (S_OK == CoInitialize(NULL) )
 149         {
 150                 // Initialize PA
 151                 Pa_Initialize();
 152
 153                 updateDeviceInfo();
 154
 155                 //should use a valid current SR...
 156                 if (m_SamplingRates.size())
 157                 {
 158                         //see if the current sr is present in the sr list, if not, use the first one!
 159                         std::vector<int>::iterator intIter = find(m_SamplingRates.begin(), m_SamplingRates.end(), m_CurrentSamplingRate);
 160                         if (intIter == m_SamplingRates.end())
 161                         {
 162                                 //not found... use the first one
 163                                 m_CurrentSamplingRate = m_SamplingRates[0];
 164                         }
 165                 }
 166                 else
 167                         std::cout << "API::Device " << m_DeviceName << " Device does not support any sample rate of ours" << std::endl;
 168
 169                 //should use a valid current buffer size
 170                 if (m_BufferSizes.size())
 171                 {
 172                         //see if the current sr is present in the buffersize list, if not, use the first one!
 173                         std::vector<int>::iterator intIter = find(m_BufferSizes.begin(), m_BufferSizes.end(), m_CurrentBufferSize);
 174                         if (intIter == m_BufferSizes.end())
 175                         {
 176                                 //not found... use the first one
 177                                 m_CurrentBufferSize = m_BufferSizes[0];
 178                         }
 179                 }
 180
 181                 //build our input/output level lists
 182                 for (unsigned int currentChannel = 0; currentChannel < m_InputChannels.size(); currentChannel++)
 183                 {
 184                         m_InputLevels.push_back (0.0);
 185                 }
 186
 187                 //build our input/output level lists
 188                 for (unsigned int currentChannel = 0; currentChannel < m_OutputChannels.size(); currentChannel++)
 189                 {
 190                         m_OutputLevels.push_back (0.0);
 191                 }
 192
 193                 std::cout << "API::Device " << m_DeviceName << " Device has been initialized" << std::endl;
 194                 m_ConnectionStatus = DeviceDisconnected;
 195                 m_lastErr = eNoErr;
 196         }
 197         else
 198         {
 199                 /*Replace with debug trace*/std::cout << "API::Device " << m_DeviceName << " cannot initialize COM" << std::endl;
 200                 DEBUG_MSG("Device " << m_DeviceName << " cannot initialize COM");
 201                 m_ConnectionStatus = DeviceErrors;
 202                 m_lastErr = eSomeThingNotInitailzed;
 203                 SetEvent(m_hExitIdleThread);
 204         }
 205
 206         SetEvent(m_hDeviceInitialized);
 207 }
 208
 209 void WCMRPortAudioDevice::terminateDevice()
 210 {
 211         std::cout << "API::Device " << m_DeviceName << " Terminating DEVICE" << std::endl;
 212
 213         //If device is streaming, need to stop it!
 214         if (Streaming())
 215         {
 216                 stopStreaming();
 217         }
 218
 219         //If device is active (meaning stream is open) we need to close it.
 220         if (Active())
 221         {
 222                 deactivateDevice();
 223         }
 224
 225         std::cout << "API::Device " << m_DeviceName << " Terminating PA" << std::endl;
 226
 227         //Deinitialize PA
 228         Pa_Terminate();
 229 }
 230
 231
 232 //**********************************************************************************************
 233 // WCMRPortAudioDevice::~WCMRPortAudioDevice
 234 //
 235 //! Destructor for the audio device. The base release all the connections that were created, if
 236 //!             they have not been already destroyed! Here we simply stop streaming, and close device
 237 //!             handles if necessary.
 238 //!
 239 //! \param none
 240 //!
 241 //! \return Nothing.
 242 //!
 243 //**********************************************************************************************
 244 WCMRPortAudioDevice::~WCMRPortAudioDevice ()
 245 {
 246     AUTO_FUNC_DEBUG;
 247
 248         std::cout << "API::Destroying Device Instance: " << DeviceName() << std::endl;
 249         try
 250         {
 251                 //Stop deviceprocessing thread
 252                 SignalObjectAndWait(m_hExitIdleThread, m_hDeviceProcessingThread, INFINITE, false);
 253
 254                 std::cout << "API::Device " << m_DeviceName << " Processing Thread is stopped" << std::endl;
 255
 256                 CloseHandle(m_hDeviceProcessingThread);
 257
 258                 //Now it's safe to free all event handlers
 259                 CloseHandle(m_hUpdateDeviceInfoRequestedEvent);
 260                 CloseHandle(m_hUpdateDeviceInfoDone);
 261                 CloseHandle(m_hActivateRequestedEvent);
 262                 CloseHandle(m_hActivationDone);
 263                 CloseHandle(m_hDeActivateRequestedEvent);
 264                 CloseHandle(m_hDeActivationDone);
 265                 CloseHandle(m_hStartStreamingRequestedEvent);
 266                 CloseHandle(m_hStartStreamingDone);
 267                 CloseHandle(m_hStopStreamingRequestedEvent);
 268                 CloseHandle(m_hStopStreamingDone);
 269                 CloseHandle(m_hResetRequestedEvent);
 270                 CloseHandle(m_hResetDone);
 271                 CloseHandle(m_hResetFromDevRequestedEvent);
 272                 CloseHandle(m_hBufferSizeChangedEvent);
 273                 CloseHandle(m_hSampleRateChangedEvent);
 274                 CloseHandle(m_hExitIdleThread);
 275                 CloseHandle(m_hDeviceInitialized);
 276         }
 277         catch (...)
 278         {
 279                 //destructors should absorb exceptions, no harm in logging though!!
 280                 DEBUG_MSG ("Exception during destructor");
 281         }
 282 }
 283
 284
 285 WTErr WCMRPortAudioDevice::UpdateDeviceInfo ()
 286 {
 287         std::cout << "API::Device (ID:)" << m_DeviceID << " Updating device info" << std::endl;
 288
 289         SignalObjectAndWait(m_hUpdateDeviceInfoRequestedEvent, m_hUpdateDeviceInfoDone, INFINITE, false);
 290
 291         return eNoErr;
 292 }
 293
 294
 295 //**********************************************************************************************
 296 // WCMRPortAudioDevice::updateDeviceInfo
 297 //
 298 //! Must be called be device processing thread
 299 //! Updates Device Information about channels, sampling rates, buffer sizes.
 300 //!
 301 //! \return Nothing.
 302 //!
 303 //**********************************************************************************************
 304 void WCMRPortAudioDevice::updateDeviceInfo (bool callerIsWaiting/*=false*/)
 305 {
 306     AUTO_FUNC_DEBUG;
 307
 308         //get device info
 309         const PaDeviceInfo *pDeviceInfo = Pa_GetDeviceInfo(m_DeviceID);
 310
 311         //update name.
 312         m_DeviceName = pDeviceInfo->name;
 313
 314         //following parameters are needed opening test stream and for sample rates validation
 315         PaStreamParameters inputParameters, outputParameters;
 316         PaStreamParameters *pInS = NULL, *pOutS = NULL;
 317
 318         inputParameters.device = m_DeviceID;
 319         inputParameters.channelCount = pDeviceInfo->maxInputChannels;
 320         inputParameters.sampleFormat = paFloat32 | paNonInterleaved;
 321         inputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
 322         inputParameters.hostApiSpecificStreamInfo = 0;
 323
 324         if (inputParameters.channelCount)
 325                 pInS = &inputParameters;
 326
 327         outputParameters.device = m_DeviceID;
 328         outputParameters.channelCount = pDeviceInfo->maxOutputChannels;
 329         outputParameters.sampleFormat = paFloat32;
 330         outputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
 331         outputParameters.hostApiSpecificStreamInfo = 0;
 332
 333         if (outputParameters.channelCount)
 334                 pOutS = &outputParameters;
 335
 336         ////////////////////////////////////////////////////////////////////////////////////
 337         //update list of supported SRs...
 338         m_SamplingRates.clear();
 339
 340         // now iterate through our standard SRs and check if they are supported by device
 341         // store them for this device
 342         for(int sr=0; gAllSampleRates[sr] > 0; sr++)
 343         {
 344                 PaError err = Pa_IsFormatSupported(pInS, pOutS, gAllSampleRates[sr]);
 345                 if( err == paFormatIsSupported)
 346                 {
 347                         m_SamplingRates.push_back ((int)gAllSampleRates[sr]);
 348                 }
 349         }
 350
 351         ///////////////////////////////////////////////////////////////////////////////////
 352         //update buffer sizes
 353         m_BufferSizes.clear();
 354         bool useDefaultBuffers = true;
 355
 356         // In ASIO Windows, the buffer size is set from the sound device manufacturer's control panel
 357         long minSize, maxSize, preferredSize, granularity;
 358         PaError err = PaAsio_GetAvailableBufferSizes(m_DeviceID, &minSize, &maxSize, &preferredSize, &granularity);
 359
 360         if (err == paNoError)
 361         {
 362                 std::cout << "API::Device " << m_DeviceName << " Buffers: " << minSize << " " << maxSize << " " << preferredSize << std::endl;
 363
 364                 m_BufferSizes.push_back (preferredSize);
 365                 useDefaultBuffers = false;
 366         }
 367         else
 368         {
 369                 std::cout << "API::Device" << m_DeviceName << " Preffered buffer size is not supported" << std::endl;
 370         }
 371
 372         if (useDefaultBuffers)
 373         {
 374                 std::cout << "API::Device" << m_DeviceName << " Using default buffer sizes " <<std::endl;
 375                 for(int bsize=0; bsize < (sizeof(gAllBufferSizes)/sizeof(gAllBufferSizes[0])); bsize++)
 376                         m_BufferSizes.push_back (gAllBufferSizes[bsize]);
 377         }
 378
 379         /////////////////////////////////////////////////////////////////////////////////////////
 380         //update channels info
 381         {
 382                 int maxInputChannels = pDeviceInfo->maxInputChannels;
 383                 int maxOutputChannels = pDeviceInfo->maxOutputChannels;
 384
 385                 //Update input channels
 386                 m_InputChannels.clear();
 387                 for (int channel = 0; channel < maxInputChannels; channel++)
 388                 {
 389                         const char* channelName[32]; // 32 is max leth declared by PortAudio for this operation
 390                         std::stringstream chNameStream;
 391
 392                         PaError error = PaAsio_GetInputChannelName(m_DeviceID, channel, channelName);
 393
 394                         chNameStream << (channel+1) << " - ";
 395
 396                         if (error == paNoError)
 397                         {
 398                                 chNameStream << *channelName;
 399                         }
 400                         else
 401                         {
 402                                 chNameStream << "Input " << (channel+1);
 403                         }
 404
 405                         m_InputChannels.push_back (chNameStream.str());
 406                 }
 407
 408
 409                 //Update output channels
 410                 m_OutputChannels.clear();
 411                 for (int channel = 0; channel < maxOutputChannels; channel++)
 412                 {
 413                         const char* channelName[32]; // 32 is max leth declared by PortAudio for this operation
 414                         std::stringstream chNameStream;
 415
 416                         PaError error = PaAsio_GetOutputChannelName(m_DeviceID, channel, channelName);
 417
 418                         chNameStream << (channel+1) << " - ";
 419
 420                         if (error == paNoError)
 421                         {
 422                                 chNameStream << *channelName;
 423                         }
 424                         else
 425                         {
 426                                 chNameStream << "Output " << (channel+1);
 427                         }
 428
 429                         m_OutputChannels.push_back (chNameStream.str());
 430                 }
 431         }
 432
 433         std::cout << "API::Device" << m_DeviceName << " Device info update has been finished" << std::endl;
 434
 435         if (callerIsWaiting)
 436                 SetEvent(m_hUpdateDeviceInfoDone);
 437 }
 438
 439
 440 PaError WCMRPortAudioDevice::testStateValidness(int sampleRate, int bufferSize)
 441 {
 442         PaError paErr = paNoError;
 443
 444         //get device info
 445         const PaDeviceInfo *pDeviceInfo = Pa_GetDeviceInfo(m_DeviceID);
 446
 447         //following parameters are needed opening test stream and for sample rates validation
 448         PaStreamParameters inputParameters, outputParameters;
 449         PaStreamParameters *pInS = NULL, *pOutS = NULL;
 450
 451         inputParameters.device = m_DeviceID;
 452         inputParameters.channelCount = pDeviceInfo->maxInputChannels;
 453         inputParameters.sampleFormat = paFloat32 | paNonInterleaved;
 454         inputParameters.suggestedLatency = 0;
 455         inputParameters.hostApiSpecificStreamInfo = 0;
 456
 457         if (inputParameters.channelCount)
 458                 pInS = &inputParameters;
 459
 460         outputParameters.device = m_DeviceID;
 461         outputParameters.channelCount = pDeviceInfo->maxOutputChannels;
 462         outputParameters.sampleFormat = paFloat32;
 463         outputParameters.suggestedLatency = 0;
 464         outputParameters.hostApiSpecificStreamInfo = 0;
 465
 466         if (outputParameters.channelCount)
 467                 pOutS = &outputParameters;
 468
 469         PaStream *portAudioStream = NULL;
 470
 471         //sometimes devices change buffer size if sample rate changes
 472         //it updates buffer size during stream opening
 473         //we need to find out how device would behave with current sample rate
 474         //try opening test stream to load device driver for current sample rate and buffer size
 475         paErr = Pa_OpenStream (&portAudioStream, pInS, pOutS, sampleRate, bufferSize, paDitherOff, NULL, NULL);
 476
 477         if (portAudioStream)
 478         {
 479                 // close test stream
 480                 Pa_CloseStream (portAudioStream);
 481                 portAudioStream = NULL;
 482         }
 483
 484         return paErr;
 485 }
 486
 487
 488 //**********************************************************************************************
 489 // WCMRPortAudioDevice::CurrentSamplingRate
 490 //
 491 //! The device's current sampling rate. This may be overridden, if the device needs to
 492 //!             query the driver for the current rate.
 493 //!
 494 //! \param none
 495 //!
 496 //! \return The device's current sampling rate. -1 on error.
 497 //!
 498 //**********************************************************************************************
 499 int WCMRPortAudioDevice::CurrentSamplingRate ()
 500 {
 501     AUTO_FUNC_DEBUG;
 502         //ToDo: Perhaps for ASIO devices that are active, we should retrive the SR from the device...
 503
 504         return (m_CurrentSamplingRate);
 505 }
 506
 507
 508 WTErr WCMRPortAudioDevice::SetActive (bool newState)
 509 {
 510         if (newState == true)
 511         {
 512                 std::cout << "API::Device " << m_DeviceName << " Activation requested" << std::endl;
 513                 SignalObjectAndWait(m_hActivateRequestedEvent, m_hActivationDone, INFINITE, false);
 514         }
 515         else
 516         {
 517                 std::cout << "API::Device " << m_DeviceName << " Deactivation requested" << std::endl;
 518                 SignalObjectAndWait(m_hDeActivateRequestedEvent, m_hDeActivationDone, INFINITE, false);
 519         }
 520
 521         if (newState == Active() )
 522                 return eNoErr;
 523         else
 524                 return eGenericErr;
 525 }
 526
 527
 528 WTErr WCMRPortAudioDevice::SetStreaming (bool newState)
 529 {
 530         if (newState == true)
 531         {
 532                 std::cout << "API::Device " << m_DeviceName << " Stream start requested" << std::endl;
 533                 SignalObjectAndWait(m_hStartStreamingRequestedEvent, m_hStartStreamingDone, INFINITE, false);
 534         }
 535         else
 536         {
 537                 std::cout << "API::Device " << m_DeviceName << " Stream stop requested" << std::endl;
 538                 SignalObjectAndWait(m_hStopStreamingRequestedEvent, m_hStopStreamingDone, INFINITE, false);
 539         }
 540
 541         if (newState == Streaming() )
 542                 return eNoErr;
 543         else
 544                 return eGenericErr;
 545 }
 546
 547
 548 WTErr WCMRPortAudioDevice::ResetDevice()
 549 {
 550         std::cout << "API::Device: " << m_DeviceName << " Reseting device" << std::endl;
 551
 552         SignalObjectAndWait(m_hResetRequestedEvent, m_hResetDone, INFINITE, false);
 553
 554         if (ConnectionStatus() == DeviceErrors)
 555         {
 556                 return m_lastErr;
 557         }
 558
 559         return eNoErr;
 560 }
 561
 562
 563 //**********************************************************************************************
 564 // WCMRPortAudioDevice::SetCurrentSamplingRate
 565 //
 566 //! Change the sampling rate to be used by the device.
 567 //!
 568 //! \param newRate : The rate to use (samples per sec).
 569 //!
 570 //! \return eNoErr always. The derived classes may return error codes.
 571 //!
 572 //**********************************************************************************************
 573 WTErr WCMRPortAudioDevice::SetCurrentSamplingRate (int newRate)
 574 {
 575     AUTO_FUNC_DEBUG;
 576         std::vector<int>::iterator intIter;
 577         WTErr retVal = eNoErr;
 578
 579         //changes the status.
 580         int oldRate = CurrentSamplingRate();
 581         bool oldActive = Active();
 582
 583         //no change, nothing to do
 584         if (oldRate == newRate)
 585                 return (retVal);
 586
 587         //see if this is one of our supported rates...
 588         intIter = find(m_SamplingRates.begin(), m_SamplingRates.end(), newRate);
 589
 590         if (intIter == m_SamplingRates.end())
 591         {
 592                 //Can't change, perhaps use an "invalid param" type of error
 593                 retVal = eCommandLineParameter;
 594                 return (retVal);
 595         }
 596
 597         if (Streaming())
 598         {
 599                 //Can't change, perhaps use an "in use" type of error
 600                 retVal = eGenericErr;
 601                 return (retVal);
 602         }
 603
 604         //make the change...
 605         m_CurrentSamplingRate = newRate;
 606         PaError paErr = PaAsio_SetStreamSampleRate (m_PortAudioStream, m_CurrentSamplingRate);
 607         Pa_Sleep(PROPERTY_CHANGE_SLEEP_TIME_MILLISECONDS); // sleep some time to make sure the change has place
 608
 609         if (paErr != paNoError)
 610         {
 611                 std::cout << "Sample rate change failed: " <<  Pa_GetErrorText (paErr) << std::endl;
 612                 if (paErr ==  paUnanticipatedHostError)
 613                         std::cout << "Details: "<< Pa_GetLastHostErrorInfo ()->errorText << "; code: " << Pa_GetLastHostErrorInfo ()->errorCode << std::endl;
 614
 615                 retVal = eWrongObjectState;
 616         }
 617
 618         return (retVal);
 619 }
 620
 621
 622 //**********************************************************************************************
 623 // WCMRPortAudioDevice::CurrentBufferSize
 624 //
 625 //! The device's current buffer size in use. This may be overridden, if the device needs to
 626 //!             query the driver for the current size.
 627 //!
 628 //! \param none
 629 //!
 630 //! \return The device's current buffer size. 0 on error.
 631 //!
 632 //**********************************************************************************************
 633 int WCMRPortAudioDevice::CurrentBufferSize ()
 634 {
 635         return m_CurrentBufferSize;
 636 }
 637
 638
 639 //**********************************************************************************************
 640 // WCMRPortAudioDevice::SetCurrentBufferSize
 641 //
 642 //! Change the buffer size to be used by the device. This will most likely be overridden,
 643 //!             the base class simply updates the member variable.
 644 //!
 645 //! \param newSize : The buffer size to use (in sample-frames)
 646 //!
 647 //! \return eNoErr always. The derived classes may return error codes.
 648 //!
 649 //**********************************************************************************************
 650 WTErr WCMRPortAudioDevice::SetCurrentBufferSize (int newSize)
 651 {
 652     AUTO_FUNC_DEBUG;
 653         WTErr retVal = eNoErr;
 654         std::vector<int>::iterator intIter;
 655
 656         if (Streaming())
 657         {
 658                 //Can't change, perhaps use an "in use" type of error
 659                 retVal = eGenericErr;
 660                 return (retVal);
 661         }
 662
 663         // Buffer size for ASIO devices can be changed from the control panel only
 664         // We have driver driven logi here
 665         if (m_CurrentBufferSize != newSize )
 666         {
 667                 // we have only one aloved buffer size which is preffered by PA
 668                 // this is the only value which could be set
 669                 newSize = m_BufferSizes[0];
 670                 int bufferSize = newSize;
 671                 // notify client to update buffer size
 672                 m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::BufferSizeChanged, (void *)&bufferSize);
 673                 return retVal;
 674         }
 675
 676         return (retVal);
 677 }
 678
 679
 680 //**********************************************************************************************
 681 // WCMRPortAudioDevice::ConnectionStatus
 682 //
 683 //! Retrieves the device's current connection status. This will most likely be overridden,
 684 //!             in case some driver communication is required to query the status.
 685 //!
 686 //! \param none
 687 //!
 688 //! \return A ConnectionStates value.
 689 //!
 690 //**********************************************************************************************
 691 WCMRPortAudioDevice::ConnectionStates WCMRPortAudioDevice::ConnectionStatus ()
 692 {
 693     AUTO_FUNC_DEBUG;
 694         //ToDo: May want to do something more to extract the actual status!
 695         return (m_ConnectionStatus);
 696
 697 }
 698
 699
 700 //**********************************************************************************************
 701 // WCMRPortAudioDevice::activateDevice
 702 //
 703 //!     IS CALLED BY PROCESS THREAD
 704 //! Sets the device into "active" state. Essentially, opens the PA device.
 705 //!             If it's an ASIO device it may result in buffer size change in some cases.
 706 //!
 707 //**********************************************************************************************
 708 void WCMRPortAudioDevice::activateDevice (bool callerIsWaiting/*=false*/)
 709 {
 710         AUTO_FUNC_DEBUG;
 711
 712         PaError paErr = paNoError;
 713
 714         // if device is not active activate it
 715         if (!Active() )
 716         {
 717                 PaStreamParameters inputParameters, outputParameters;
 718                 PaStreamParameters *pInS = NULL, *pOutS = NULL;
 719
 720                 const PaDeviceInfo *pDeviceInfo = Pa_GetDeviceInfo(m_DeviceID);
 721                 const PaHostApiInfo *pHostApiInfo = Pa_GetHostApiInfo(pDeviceInfo->hostApi);
 722
 723                 inputParameters.device = m_DeviceID;
 724                 inputParameters.channelCount = (int)m_InputChannels.size();
 725                 inputParameters.sampleFormat = paFloat32 | paNonInterleaved;
 726                 inputParameters.suggestedLatency = Pa_GetDeviceInfo(m_DeviceID)->defaultLowInputLatency;
 727                 inputParameters.hostApiSpecificStreamInfo = 0;
 728
 729                 if (inputParameters.channelCount)
 730                         pInS = &inputParameters;
 731
 732                 outputParameters.device = m_DeviceID;
 733                 outputParameters.channelCount = (int)m_OutputChannels.size();
 734                 outputParameters.sampleFormat = paFloat32;
 735                 outputParameters.suggestedLatency = Pa_GetDeviceInfo(m_DeviceID)->defaultLowOutputLatency;
 736                 outputParameters.hostApiSpecificStreamInfo = 0;
 737
 738                 if (outputParameters.channelCount)
 739                         pOutS = &outputParameters;
 740
 741                 std::cout << "API::Device " << m_DeviceName << " Opening device stream " << std::endl;
 742                 std::cout << "Sample rate: " << m_CurrentSamplingRate << " buffer size: " << m_CurrentBufferSize << std::endl;
 743                 paErr = Pa_OpenStream(&m_PortAudioStream,
 744                                                                 pInS,
 745                                                                 pOutS,
 746                                                                 m_CurrentSamplingRate,
 747                                                                 m_CurrentBufferSize,
 748                                                                 paDitherOff,
 749                                                                 WCMRPortAudioDevice::TheCallback,
 750                                                                 this);
 751
 752                 if(paErr != paNoError)
 753                 {
 754                         std::cout << "Cannot open streamm with buffer: "<< m_CurrentBufferSize << " Error: " << Pa_GetErrorText (paErr) << std::endl;
 755
 756                         if (paErr ==  paUnanticipatedHostError)
 757                                 std::cout << "Error details: "<< Pa_GetLastHostErrorInfo ()->errorText << "; code: " << Pa_GetLastHostErrorInfo ()->errorCode << std::endl;
 758                 }
 759
 760                 if(paErr == paNoError)
 761                 {
 762                         std::cout << "Stream has been opened! "<< std::endl;
 763
 764                         // check for possible changes
 765                         long minSize, maxSize, preferredSize, granularity;
 766                         PaError paErr = PaAsio_GetAvailableBufferSizes(m_DeviceID, &minSize, &maxSize, &preferredSize, &granularity);
 767
 768                         std::cout << "Checked if buffer size changed "<< std::endl;
 769                         if (paErr == paNoError && m_CurrentBufferSize != preferredSize)
 770                         {
 771                                 std::cout << "Buffer size has changed "<< std::endl;
 772                                 m_CurrentBufferSize = preferredSize;
 773                                 m_BufferSizes.clear();
 774                                 m_BufferSizes.push_back(preferredSize);
 775                                 m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::BufferSizeChanged, (void *)&preferredSize);
 776                         }
 777
 778                         m_DropsDetected = 0;
 779                         m_DropsReported = 0;
 780                         m_IgnoreThisDrop = true;
 781
 782                         if (pHostApiInfo->type == paASIO)
 783                         {
 784                                 m_BufferSizeChangeRequested = 0;
 785                                 m_BufferSizeChangeReported = 0;
 786                                 m_ResetRequested = 0;
 787                                 m_ResetReported = 0;
 788                                 m_ResyncRequested = 0;
 789                                 m_ResyncReported = 0;
 790                                 std::cout << "Installing new mesage hook "<< std::endl;
 791                                 PaAsio_SetMessageHook (StaticASIOMessageHook, this);
 792                         }
 793                         m_IsActive = true;
 794                         m_ConnectionStatus = DeviceAvailable;
 795                         m_lastErr = eNoErr;
 796                 }
 797                 else
 798                 {
 799                         //failed, do not update device state
 800                         std::cout << "Failed to open pa stream: " <<  Pa_GetErrorText (paErr) << std::endl;
 801                         DEBUG_MSG( "Failed to open pa stream: " << Pa_GetErrorText (paErr) );
 802                         m_ConnectionStatus = DeviceErrors;
 803                         m_lastErr = eAsioFailed;
 804                 }
 805
 806
 807         }
 808
 809         std::cout << "Activation is DONE "<< std::endl;
 810
 811         if (callerIsWaiting)
 812                 SetEvent(m_hActivationDone);
 813 }
 814
 815
 816 //**********************************************************************************************
 817 // WCMRPortAudioDevice::deactivateDevice
 818 //
 819 //!     IS CALLED BY PROCESS THREAD
 820 //! Sets the device into "inactive" state. Essentially, closes the PA device.
 821 //!
 822 //**********************************************************************************************
 823 void WCMRPortAudioDevice::deactivateDevice (bool callerIsWaiting/*=false*/)
 824 {
 825     AUTO_FUNC_DEBUG;
 826
 827         PaError paErr = paNoError;
 828
 829         if (Active() )
 830         {
 831                 if (Streaming())
 832                 {
 833                         stopStreaming ();
 834                 }
 835
 836                 if (m_PortAudioStream)
 837                 {
 838                         //close the stream first
 839                         std::cout << "API::Device" << m_DeviceName << " Closing device stream" << std::endl;
 840                         paErr = Pa_CloseStream (m_PortAudioStream);
 841                         if(paErr == paNoError)
 842                         {
 843                                 m_PortAudioStream = NULL;
 844                                 m_DropsDetected = 0;
 845                                 m_DropsReported = 0;
 846                                 m_IgnoreThisDrop = true;
 847                                 m_BufferSizeChangeRequested = 0;
 848                                 m_BufferSizeChangeReported = 0;
 849                                 m_ResetRequested = 0;
 850                                 m_ResetReported = 0;
 851                                 m_ResyncRequested = 0;
 852                                 m_ResyncReported = 0;
 853                                 PaAsio_SetMessageHook (NULL, NULL);
 854
 855                                 //finaly set device state to "not active"
 856                                 m_IsActive = false;
 857                                 m_ConnectionStatus = DeviceDisconnected;
 858                                 m_lastErr = eNoErr;
 859                         }
 860                         else
 861                         {
 862                                 //failed, do not update device state
 863                                 std::cout << "Failed to close pa stream stream " <<  Pa_GetErrorText (paErr) << std::endl;
 864                                 DEBUG_MSG( "Failed to open pa stream stream " << Pa_GetErrorText (paErr) );
 865                                 m_ConnectionStatus = DeviceErrors;
 866                                 m_lastErr = eAsioFailed;
 867                         }
 868                 }
 869         }
 870
 871         if (callerIsWaiting)
 872                 SetEvent(m_hDeActivationDone);
 873 }
 874
 875
 876 //**********************************************************************************************
 877 // WCMRPortAudioDevice::startStreaming
 878 //
 879 //! Sets the devices into "streaming" state. Calls PA's Start stream routines.
 880 //! This roughly corresponds to calling Start on the lower level interface.
 881 //!
 882 //**********************************************************************************************
 883 void WCMRPortAudioDevice::startStreaming (bool callerIsWaiting/*=false*/)
 884 {
 885     AUTO_FUNC_DEBUG;
 886
 887         // proceed if the device is not streaming
 888         if (!Streaming () )
 889         {
 890                 PaError paErr = paNoError;
 891                 m_StopRequested = false;
 892                 m_SampleCounter = 0;
 893
 894                 std::cout << "API::Device" << m_DeviceName << " Starting device stream" << std::endl;
 895
 896                 //get device info
 897                 const PaDeviceInfo *pDeviceInfo = Pa_GetDeviceInfo(m_DeviceID);
 898
 899                 unsigned int inChannelCount = pDeviceInfo->maxInputChannels;
 900                 unsigned int outChannelCount = pDeviceInfo->maxOutputChannels;
 901
 902                 // Prepare for streaming - tell Engine to do the initialization for process callback
 903                 m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::DeviceStartsStreaming);
 904
 905                 paErr = Pa_StartStream( m_PortAudioStream );
 906
 907                 if(paErr == paNoError)
 908                 {
 909                         // if the stream was started successfully
 910                         m_IsStreaming = true;
 911                         std::cout << "API::Device" << m_DeviceName << " Device is streaming" << std::endl;
 912                 }
 913                 else
 914                 {
 915                         std::cout << "Failed to start PA stream: " <<  Pa_GetErrorText (paErr) << std::endl;
 916                         DEBUG_MSG( "Failed to start PA stream: " << Pa_GetErrorText (paErr) );
 917                         m_lastErr = eGenericErr;
 918                 }
 919         }
 920
 921         if (callerIsWaiting)
 922                 SetEvent(m_hStartStreamingDone);
 923 }
 924
 925
 926 //**********************************************************************************************
 927 // WCMRPortAudioDevice::stopStreaming
 928 //
 929 //! Sets the devices into "not streaming" state. Calls PA's Stop stream routines.
 930 //! This roughly corresponds to calling Stop on the lower level interface.
 931 //!
 932 //**********************************************************************************************
 933 void WCMRPortAudioDevice::stopStreaming (bool callerIsWaiting/*=false*/)
 934 {
 935     AUTO_FUNC_DEBUG;
 936
 937         // proceed if the device is streaming
 938         if (Streaming () )
 939         {
 940                 PaError paErr = paNoError;
 941                 m_StopRequested = true;
 942
 943                 std::cout << "API::Device " << m_DeviceName << " Stopping device stream" << std::endl;
 944                 paErr = Pa_StopStream( m_PortAudioStream );
 945
 946                 if(paErr == paNoError || paErr == paStreamIsStopped)
 947                 {
 948                         // if the stream was stopped successfully
 949                         m_IsStreaming = false;
 950                         m_pInputData = NULL;
 951                 }
 952                 else
 953                 {
 954                         std::cout << "Failed to stop PA stream normaly! Error:" <<  Pa_GetErrorText (paErr) << std::endl;
 955                         DEBUG_MSG( "Failed to stop PA stream normaly! Error:" << Pa_GetErrorText (paErr) );
 956                         m_lastErr = eGenericErr;
 957                 }
 958         }
 959
 960         if (callerIsWaiting)
 961                 SetEvent(m_hStopStreamingDone);
 962 }
 963
 964
 965 //**********************************************************************************************
 966 // WCMRPortAudioDevice::resetDevice
 967 //
 968 //! Resets the device, updates device info. Importnat: does PA reinitialization calling
 969 //! Pa_terminate/Pa_initialize functions.
 970 //!
 971 //! \param none
 972 //!
 973 //! \return nothing
 974 //!
 975 //**********************************************************************************************
 976 void WCMRPortAudioDevice::resetDevice (bool callerIsWaiting /*=false*/ )
 977 {
 978         PaError paErr = paNoError;
 979
 980         // Keep device sates
 981         bool wasStreaming = Streaming();
 982         bool wasActive = Active();
 983
 984         // Reset the device
 985         stopStreaming();
 986         deactivateDevice();
 987
 988         // Cache device buffer size as it might be changed during reset
 989         int oldBufferSize = m_CurrentBufferSize;
 990
 991         // Now, validate the state and update device info if required
 992         unsigned int retry = PROPERTY_CHANGE_RETRIES;
 993         while (retry-- )
 994         {
 995                 // Reinitialize PA
 996                 Pa_Terminate();
 997                 Pa_Initialize();
 998
 999                 std::cout << "Updating device state... " << std::endl;
1000                 // update device info
1001                 updateDeviceInfo();
1002
1003                 // take up buffers
1004                 long minSize, maxSize, preferredSize, granularity;
1005                 PaError paErr = PaAsio_GetAvailableBufferSizes(m_DeviceID, &minSize, &maxSize, &preferredSize, &granularity);
1006
1007                 if (paErr != paNoError)
1008                 {
1009                         continue;
1010                 }
1011                 m_CurrentBufferSize = preferredSize;
1012
1013                 paErr = testStateValidness(m_CurrentSamplingRate, m_CurrentBufferSize);
1014                 if (paNoError ==  paErr)
1015                 {
1016                         std::cout << "Device state is valid" << std::endl;
1017                         break;
1018                 }
1019
1020                 std::cout << "Cannot start with current state: sr: " << m_CurrentSamplingRate << " bs:" << m_CurrentBufferSize \
1021                                         << "\nReason: " <<  Pa_GetErrorText (paErr) << std::endl;
1022                 if (paErr ==  paUnanticipatedHostError)
1023                         std::cout << "Details: "<< Pa_GetLastHostErrorInfo ()->errorText << "; code: " << Pa_GetLastHostErrorInfo ()->errorCode << std::endl;
1024
1025                 std::cout << "Will try again in " << DEVICE_INFO_UPDATE_SLEEP_TIME_MILLISECONDS << "msec" << std::endl;
1026
1027                 Pa_Sleep(DEVICE_INFO_UPDATE_SLEEP_TIME_MILLISECONDS);
1028         }
1029
1030         if (paErr == paNoError)
1031         {
1032                 // Notify the Application about device setting changes
1033                 if (oldBufferSize != m_CurrentBufferSize)
1034                 {
1035                         std::cout << "API::Device" << m_DeviceName << " buffer size changed" << std::endl;
1036                         int bufferSize = m_CurrentBufferSize;
1037                         m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::BufferSizeChanged, (void *)&bufferSize);
1038                 }
1039
1040                 // Activate the device if it was active before
1041                 if (wasActive)
1042                         activateDevice();
1043
1044                 // Resume streaming if the device was streaming before
1045                 if(wasStreaming && m_lastErr == eNoErr && m_ConnectionStatus == DeviceAvailable)
1046                 {
1047                         // start streaming
1048                         startStreaming();
1049                 }
1050         } else {
1051                 m_ConnectionStatus = DeviceErrors;
1052                 m_lastErr = eWrongObjectState;
1053         }
1054
1055         if (callerIsWaiting)
1056                 SetEvent(m_hResetDone);
1057 }
1058
1059
1060 #ifdef PLATFORM_WINDOWS
1061
1062 long WCMRPortAudioDevice::StaticASIOMessageHook (void *pRefCon, long selector, long value, void* message, double* opt)
1063 {
1064         if (pRefCon)
1065         {
1066                 return ((WCMRPortAudioDevice*)(pRefCon))->ASIOMessageHook (selector, value, message, opt);
1067         }
1068         else
1069                 return -1;
1070 }
1071
1072 long WCMRPortAudioDevice::ASIOMessageHook (long selector, long WCUNUSEDPARAM(value), void* WCUNUSEDPARAM(message), double* WCUNUSEDPARAM(opt))
1073 {
1074         switch(selector)
1075         {
1076                 case kAsioResyncRequest:
1077                         m_ResyncRequested++;
1078                         std::cout << "\t\t\tWCMRPortAudioDevice::ASIOMessageHook -- kAsioResyncRequest" << std::endl;
1079                         break;
1080
1081                 case kAsioLatenciesChanged:
1082                         m_BufferSizeChangeRequested++;
1083                         std::cout << "\t\t\tWCMRPortAudioDevice::ASIOMessageHook -- kAsioLatenciesChanged" << std::endl;
1084                         if (m_ResetRequested == 0) {
1085                                 m_ResetRequested++;
1086                                 m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::RequestReset);
1087                         }
1088                         break;
1089
1090                 case kAsioBufferSizeChange:
1091                         m_BufferSizeChangeRequested++;
1092                         std::cout << "\t\t\tWCMRPortAudioDevice::ASIOMessageHook -- m_BufferSizeChangeRequested" << std::endl;
1093                         if (m_ResetRequested == 0) {
1094                                 m_ResetRequested++;
1095                                 m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::RequestReset);
1096                         }
1097                         break;
1098
1099                 case kAsioResetRequest:
1100                         std::cout << "\t\t\tWCMRPortAudioDevice::ASIOMessageHook -- kAsioResetRequest" << std::endl;
1101                         m_ResetRequested++;
1102                         m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::RequestReset);
1103                         break;
1104
1105         case kAsioOverload:
1106                         m_DropsDetected++;
1107                         std::cout << "\t\t\tWCMRPortAudioDevice::ASIOMessageHook -- kAsioOverload" << std::endl;
1108                         m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::Dropout);
1109             break;
1110         }
1111         return 0;
1112 }
1113
1114 #endif
1115
1116
1117 //**********************************************************************************************
1118 // WCMRPortAudioDevice::DoIdle
1119 //
1120 //! A place for doing idle time processing. The other derived classes will probably do something
1121 //!             meaningful.
1122 //!
1123 //! \param none
1124 //!
1125 //! \return eNoErr always.
1126 //!
1127 //**********************************************************************************************
1128 WTErr WCMRPortAudioDevice::DoIdle ()
1129 {
1130         WTErr retVal = eNoErr;
1131
1132         std::cout << "WCMRPortAudioDevice::DoIdle ()" << std::endl;
1133         HANDLE hEvents[] =
1134         {
1135                 m_hUpdateDeviceInfoRequestedEvent,
1136                 m_hActivateRequestedEvent,
1137                 m_hDeActivateRequestedEvent,
1138                 m_hStartStreamingRequestedEvent,
1139                 m_hStopStreamingRequestedEvent,
1140                 m_hBufferSizeChangedEvent,
1141                 m_hSampleRateChangedEvent,
1142                 m_hResetRequestedEvent,
1143                 m_hResetFromDevRequestedEvent,
1144                 m_hExitIdleThread
1145         };
1146
1147         const size_t hEventsSize = sizeof(hEvents)/sizeof(hEvents[0]);
1148
1149         initDevice();
1150
1151         for(;;)
1152         {
1153                 DWORD result = WaitForMultipleObjects (hEventsSize, hEvents, FALSE, INFINITE);
1154                 result = result - WAIT_OBJECT_0;
1155
1156                 if ((result < 0) || (result >= hEventsSize)) {
1157                         std::cout << "\t\t\t\t\t\t\tWCMRPortAudioDevice::DoIdle () -> (result < 0) || (result >= hEventsSize):" << result << std::endl;
1158                         retVal = eGenericErr;
1159                         break;
1160                 }
1161
1162                 if (hEvents[result] == m_hExitIdleThread) {
1163                         std::cout << "\t\t\t\t\t\t\tWCMRPortAudioDevice::DoIdle () -> m_hExitIdleThread" << result << std::endl;
1164                         retVal = eNoErr;
1165                         break;
1166                 }
1167
1168                 if (hEvents[result] == m_hUpdateDeviceInfoRequestedEvent) {
1169                         std::cout << "\t\t\t\t\t\tupdate requested ..." << std::endl;
1170                         updateDeviceInfo(true);
1171                 }
1172
1173                 if (hEvents[result] == m_hActivateRequestedEvent) {
1174                         std::cout << "\t\t\t\t\t\tactivation requested ..." << std::endl;
1175                         activateDevice(true);
1176                 }
1177
1178                 if (hEvents[result] == m_hDeActivateRequestedEvent) {
1179                         std::cout << "\t\t\t\t\t\tdeactivation requested ..." << std::endl;
1180                         deactivateDevice(true);
1181                 }
1182
1183                 if (hEvents[result] == m_hStartStreamingRequestedEvent) {
1184                         std::cout << "\t\t\t\t\t\tStart stream requested ..." << std::endl;
1185                         startStreaming(true);
1186                 }
1187
1188                 if (hEvents[result] == m_hStopStreamingRequestedEvent) {
1189                         std::cout << "\t\t\t\t\t\tStop stream requested ..." << std::endl;
1190                         stopStreaming(true);
1191                 }
1192
1193                 if (hEvents[result] == m_hResetRequestedEvent) {
1194                         std::cout << "\t\t\t\t\t\treset requested ..." << std::endl;
1195                         resetDevice(true);
1196                 }
1197
1198                 if (hEvents[result] == m_hResetFromDevRequestedEvent) {
1199                         std::cout << "\t\t\t\t\t\treset requested from device..." << std::endl;
1200                         resetDevice();
1201                 }
1202
1203                 if (hEvents[result] == m_hBufferSizeChangedEvent) {
1204                         std::cout << "\t\t\t\t\t\tbuffer size changed from device..." << std::endl;
1205                         m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::BufferSizeChanged);
1206                 }
1207
1208                 if (hEvents[result] == m_hSampleRateChangedEvent) {
1209                         std::cout << "\t\t\t\t\t\tsample rate changed from device..." << std::endl;
1210                         m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::SamplingRateChanged);
1211                 }
1212         }
1213
1214         terminateDevice();
1215
1216         return retVal;
1217 }
1218
1219
1220 //**********************************************************************************************
1221 // WCMRPortAudioDevice::SetMonitorChannels
1222 //
1223 //! Used to set the channels to be used for monitoring.
1224 //!
1225 //! \param leftChannel : Left monitor channel index.
1226 //! \param rightChannel : Right monitor channel index.
1227 //!
1228 //! \return eNoErr always, the derived classes may return appropriate errors.
1229 //!
1230 //**********************************************************************************************
1231 WTErr WCMRPortAudioDevice::SetMonitorChannels (int leftChannel, int rightChannel)
1232 {
1233     AUTO_FUNC_DEBUG;
1234         //This will most likely be overridden, the base class simply
1235         //changes the member.
1236         m_LeftMonitorChannel = leftChannel;
1237         m_RightMonitorChannel = rightChannel;
1238         return (eNoErr);
1239 }
1240
1241
1242
1243 //**********************************************************************************************
1244 // WCMRPortAudioDevice::SetMonitorGain
1245 //
1246 //! Used to set monitor gain (or atten).
1247 //!
1248 //! \param newGain : The new gain or atten. value to use. Specified as a linear multiplier (not dB)
1249 //!
1250 //! \return eNoErr always, the derived classes may return appropriate errors.
1251 //!
1252 //**********************************************************************************************
1253 WTErr WCMRPortAudioDevice::SetMonitorGain (float newGain)
1254 {
1255     AUTO_FUNC_DEBUG;
1256         //This will most likely be overridden, the base class simply
1257         //changes the member.
1258
1259         m_MonitorGain = newGain;
1260         return (eNoErr);
1261 }
1262
1263
1264
1265
1266 //**********************************************************************************************
1267 // WCMRPortAudioDevice::ShowConfigPanel
1268 //
1269 //! Used to show device specific config/control panel. Some interfaces may not support it.
1270 //!             Some interfaces may require the device to be active before it can display a panel.
1271 //!
1272 //! \param pParam : A device/interface specific parameter, should be the app window handle for ASIO.
1273 //!
1274 //! \return eNoErr always, the derived classes may return errors.
1275 //!
1276 //**********************************************************************************************
1277 WTErr WCMRPortAudioDevice::ShowConfigPanel (void *pParam)
1278 {
1279     AUTO_FUNC_DEBUG;
1280         WTErr retVal = eNoErr;
1281
1282         if (Active() && !m_ResetRequested )
1283         {
1284 #ifdef PLATFORM_WINDOWS
1285                 if(Pa_GetHostApiInfo(Pa_GetDeviceInfo(m_DeviceID)->hostApi)->type == paASIO)
1286                 {
1287                         // stop and deactivate the device
1288                         bool wasStreaming = Streaming();
1289                         SetActive(false);
1290
1291                         // show control panel for the device
1292                         if (PaAsio_ShowControlPanel (m_DeviceID, pParam) != paNoError)
1293                                 retVal = eGenericErr;
1294
1295                         // restore previous state for the device
1296                         SetActive(true);
1297                         if (wasStreaming)
1298                                 SetStreaming(true);
1299
1300
1301                         // reset device to pick up changes
1302                         if (!m_ResetRequested) {
1303                                 m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::RequestReset);
1304                         }
1305                 }
1306 #else
1307         pParam = pParam;
1308 #endif //_windows
1309         }
1310
1311         return (retVal);
1312 }
1313
1314
1315 //*****************************************************************************************************
1316 // WCMRPortAudioDevice::TheCallback
1317 //
1318 //! The (static) Port Audio Callback function. This is a static member. It calls on the AudioCallback in the
1319 //!             WCMRPortAudioDevice to do the real work.
1320 //!
1321 //! \param pInputBuffer: pointer to input buffer.
1322 //! \param pOutputBuffer: pointer to output buffer.
1323 //! \param framesPerBuffer: number of sample frames per buffer.
1324 //! \param pTimeInfo: time info for PaStream callback.
1325 //! \param statusFlags:
1326 //! \param pUserData: pointer to user data, in our case the WCMRPortAudioDevice object.
1327 //!
1328 //! \return true to stop streaming else returns false.
1329 //******************************************************************************************************
1330 int WCMRPortAudioDevice::TheCallback (const void *pInputBuffer, void *pOutputBuffer, unsigned long framesPerBuffer,
1331         const PaStreamCallbackTimeInfo* /*pTimeInfo*/, PaStreamCallbackFlags statusFlags, void *pUserData )
1332 {
1333         WCMRPortAudioDevice *pMyDevice = (WCMRPortAudioDevice *)pUserData;
1334         if (pMyDevice)
1335                 return pMyDevice->AudioCallback ((float *)pInputBuffer, (float *)pOutputBuffer, framesPerBuffer,
1336                         (statusFlags & (paInputOverflow | paOutputUnderflow)) != 0);
1337         else
1338                 return (true);
1339
1340 }
1341
1342
1343
1344 //**********************************************************************************************
1345 // WCMRPortAudioDevice::AudoiCallback
1346 //
1347 //! Here's where the actual audio processing happens. We call upon all the active connections'
1348 //!             sinks to provide data to us which can be put/mixed in the output buffer! Also, we make the
1349 //!             input data available to any sources     that may call upon us during this time!
1350 //!
1351 //! \param *pInputBuffer : Points to a buffer with recorded data.
1352 //! \param *pOutputBuffer : Points to a buffer to receive playback data.
1353 //! \param framesPerBuffer : Number of sample frames in input and output buffers. Number of channels,
1354 //!             which are interleaved, is fixed at Device Open (Active) time. In this implementation,
1355 //!             the number of channels are fixed to use the maximum available.
1356 //!     \param dropsDetected : True if dropouts were detected in input or output. Can be used to signal the GUI.
1357 //!
1358 //! \return true
1359 //!
1360 //**********************************************************************************************
1361 int WCMRPortAudioDevice::AudioCallback( const float *pInputBuffer, float *pOutputBuffer, unsigned long framesPerBuffer, bool dropsDetected )
1362 {
1363         UMicroseconds theStartTime;
1364
1365     // detect drops
1366         if (dropsDetected)
1367         {
1368                 if (m_IgnoreThisDrop)
1369                         m_IgnoreThisDrop = false; //We'll ignore once, just once!
1370                 else
1371                         m_DropsDetected++;
1372         }
1373
1374         m_pInputData = pInputBuffer;
1375
1376     // VKamyshniy: Is this a right place to call the client???:
1377     struct WCMRAudioDeviceManagerClient::AudioCallbackData audioCallbackData =
1378     {
1379         m_pInputData,
1380         pOutputBuffer,
1381         framesPerBuffer,
1382                 m_SampleCounter,
1383                 theStartTime.MicroSeconds()*1000
1384     };
1385
1386     m_pMyManager->NotifyClient (WCMRAudioDeviceManagerClient::AudioCallback, (void *)&audioCallbackData );
1387
1388         //Don't try to  access after this call returns!
1389         m_pInputData = NULL;
1390
1391         m_SampleCounter += framesPerBuffer;
1392
1393         return m_StopRequested;
1394 }
1395
1396
1397
1398
1399 //**********************************************************************************************
1400 // WCMRPortAudioDeviceManager::WCMRPortAudioDeviceManager
1401 //
1402 //! The constructuor, we initialize PA, and build the device list.
1403 //!
1404 //! \param *pTheClient : The manager's client object (which receives notifications).
1405 //! \param interfaceType : The PortAudio interface type to use for this manager - acts as a filter.
1406 //! \param useMultithreading : Whether to use multi-threading for audio processing. Default is true.
1407 //!
1408 //! \return Nothing.
1409 //!
1410 //**********************************************************************************************
1411 WCMRPortAudioDeviceManager::WCMRPortAudioDeviceManager (WCMRAudioDeviceManagerClient *pTheClient,
1412                                                                                                                 eAudioDeviceFilter eCurAudioDeviceFilter, bool useMultithreading, bool bNocopy)
1413         : WCMRAudioDeviceManager (pTheClient, eCurAudioDeviceFilter)
1414         , m_NoneDevice(0)
1415         , m_UseMultithreading(useMultithreading)
1416         , m_bNoCopyAudioBuffer(bNocopy)
1417 {
1418     AUTO_FUNC_DEBUG;
1419         std::cout << "API::PortAudioDeviceManager::PA Device manager constructor" << std::endl;
1420
1421         //Always create the None device first...
1422         m_NoneDevice = new WCMRNativeAudioNoneDevice(this);
1423
1424         WTErr err = generateDeviceListImpl();
1425
1426         if (eNoErr != err)
1427                 throw err;
1428
1429         timeBeginPeriod (1);
1430 }
1431
1432
1433 //**********************************************************************************************
1434 // WCMRPortAudioDeviceManager::~WCMRPortAudioDeviceManager
1435 //
1436 //! It clears the device list, releasing each of the device.
1437 //!
1438 //! \param none
1439 //!
1440 //! \return Nothing.
1441 //!
1442 //**********************************************************************************************
1443 WCMRPortAudioDeviceManager::~WCMRPortAudioDeviceManager()
1444 {
1445     AUTO_FUNC_DEBUG;
1446
1447         std::cout << "API::Destroying PortAudioDeviceManager " << std::endl;
1448
1449         try
1450         {
1451                 delete m_NoneDevice;
1452         }
1453         catch (...)
1454         {
1455                 //destructors should absorb exceptions, no harm in logging though!!
1456                 DEBUG_MSG ("Exception during destructor");
1457         }
1458
1459         timeEndPeriod (1);
1460 }
1461
1462
1463 WCMRAudioDevice* WCMRPortAudioDeviceManager::initNewCurrentDeviceImpl(const std::string & deviceName)
1464 {
1465     destroyCurrentDeviceImpl();
1466
1467         std::cout << "API::PortAudioDeviceManager::initNewCurrentDevice " << deviceName << std::endl;
1468         if (deviceName == m_NoneDevice->DeviceName() )
1469         {
1470                 m_CurrentDevice = m_NoneDevice;
1471                 return m_CurrentDevice;
1472         }
1473
1474         DeviceInfo devInfo;
1475         WTErr err = GetDeviceInfoByName(deviceName, devInfo);
1476
1477         if (eNoErr == err)
1478         {
1479                 try
1480                 {
1481                         std::cout << "API::PortAudioDeviceManager::Creating PA device: " << devInfo.m_DeviceId << ", Device Name: " << devInfo.m_DeviceName << std::endl;
1482                         TRACE_MSG ("API::PortAudioDeviceManager::Creating PA device: " << devInfo.m_DeviceId << ", Device Name: " << devInfo.m_DeviceName);
1483
1484                         m_CurrentDevice = new WCMRPortAudioDevice (this, devInfo.m_DeviceId, m_UseMultithreading, m_bNoCopyAudioBuffer);
1485                 }
1486                 catch (...)
1487                 {
1488                         std::cout << "Unabled to create PA Device: " << devInfo.m_DeviceId << std::endl;
1489                         DEBUG_MSG ("Unabled to create PA Device: " << devInfo.m_DeviceId);
1490                 }
1491         }
1492
1493         return m_CurrentDevice;
1494 }
1495
1496
1497 void WCMRPortAudioDeviceManager::destroyCurrentDeviceImpl()
1498 {
1499         if (m_CurrentDevice != m_NoneDevice)
1500                 delete m_CurrentDevice;
1501
1502         m_CurrentDevice = 0;
1503 }
1504
1505
1506 WTErr WCMRPortAudioDeviceManager::getDeviceAvailableSampleRates(DeviceID deviceId, std::vector<int>& sampleRates)
1507 {
1508         WTErr retVal = eNoErr;
1509
1510         sampleRates.clear();
1511         const PaDeviceInfo *pPaDeviceInfo = Pa_GetDeviceInfo(deviceId);
1512
1513         //now find supported sample rates
1514         //following parameters are needed for sample rates validation
1515         PaStreamParameters inputParameters, outputParameters;
1516         PaStreamParameters *pInS = NULL, *pOutS = NULL;
1517
1518         inputParameters.device = deviceId;
1519         inputParameters.channelCount = std::min<int>(2, pPaDeviceInfo->maxInputChannels);
1520         inputParameters.sampleFormat = paFloat32 | paNonInterleaved;
1521         inputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
1522         inputParameters.hostApiSpecificStreamInfo = 0;
1523
1524         if (inputParameters.channelCount)
1525                 pInS = &inputParameters;
1526
1527         outputParameters.device = deviceId;
1528         outputParameters.channelCount = std::min<int>(2, pPaDeviceInfo->maxOutputChannels);
1529         outputParameters.sampleFormat = paFloat32;
1530         outputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
1531         outputParameters.hostApiSpecificStreamInfo = 0;
1532
1533         if (outputParameters.channelCount)
1534                 pOutS = &outputParameters;
1535
1536         for(int sr=0; gAllSampleRates[sr] > 0; sr++)
1537         {
1538                 if( paFormatIsSupported == Pa_IsFormatSupported(pInS, pOutS, gAllSampleRates[sr]) )
1539                 {
1540                         sampleRates.push_back ((int)gAllSampleRates[sr]);
1541                 }
1542         }
1543
1544         return retVal;
1545 }
1546
1547
1548 WTErr WCMRPortAudioDeviceManager::getDeviceAvailableBufferSizes(DeviceID deviceId, std::vector<int>& buffers)
1549 {
1550         WTErr retVal = eNoErr;
1551
1552         buffers.clear();
1553
1554         //make PA request to get actual device buffer sizes
1555         long minSize, maxSize, preferredSize, granularity;
1556
1557         PaError paErr = PaAsio_GetAvailableBufferSizes(deviceId, &minSize, &maxSize, &preferredSize, &granularity);
1558
1559         //for Windows ASIO devices we always use prefferes buffer size ONLY
1560         if (paNoError == paErr )
1561         {
1562                 buffers.push_back(preferredSize);
1563         }
1564         else
1565         {
1566                 retVal = eAsioFailed;
1567                 std::cout << "API::PortAudioDeviceManager::GetBufferSizes: error: " <<  Pa_GetErrorText (paErr) << " getting buffer sizes for device: "<< deviceId << std::endl;
1568         }
1569
1570         return retVal;
1571 }
1572
1573
1574 WTErr WCMRPortAudioDeviceManager::generateDeviceListImpl()
1575 {
1576         std::cout << "API::PortAudioDeviceManager::Generating device list" << std::endl;
1577
1578         WTErr retVal = eNoErr;
1579
1580         //Initialize PortAudio and ASIO first
1581         PaError paErr = Pa_Initialize();
1582
1583         if (paErr != paNoError)
1584         {
1585                 //ToDo: throw an exception here!
1586                 retVal = eSomeThingNotInitailzed;
1587                 return retVal;
1588         }
1589
1590         // lock DeviceInfoVec firts
1591         wvNS::wvThread::ThreadMutex::lock theLock(m_AudioDeviceInfoVecMutex);
1592
1593         if (m_NoneDevice)
1594         {
1595                 DeviceInfo *pDevInfo = new DeviceInfo(NONE_DEVICE_ID, m_NoneDevice->DeviceName() );
1596                 pDevInfo->m_AvailableSampleRates = m_NoneDevice->SamplingRates();
1597                 m_DeviceInfoVec.push_back(pDevInfo);
1598         }
1599
1600         //Get device count...
1601         int numDevices = Pa_GetDeviceCount();
1602
1603         //for each device,
1604         for (int thisDeviceID = 0; thisDeviceID < numDevices; thisDeviceID++)
1605         {
1606                 //if it's of the required type...
1607                 const PaDeviceInfo *pPaDeviceInfo = Pa_GetDeviceInfo(thisDeviceID);
1608
1609                 if (Pa_GetHostApiInfo(pPaDeviceInfo->hostApi)->type == paASIO)
1610                 {
1611                         //build a device object...
1612                         try
1613                         {
1614                                 std::cout << "API::PortAudioDeviceManager::DeviceID: " << thisDeviceID << ", Device Name: " << pPaDeviceInfo->name << std::endl;
1615                                 TRACE_MSG ("PA DeviceID: " << thisDeviceID << ", Device Name: " << pPaDeviceInfo->name);
1616
1617                                 DeviceInfo *pDevInfo = new DeviceInfo(thisDeviceID, pPaDeviceInfo->name);
1618                                 if (pDevInfo)
1619                                 {
1620                                         //Get available sample rates
1621                                         std::vector<int> availableSampleRates;
1622                                         WTErr wErr = WCMRPortAudioDeviceManager::getDeviceAvailableSampleRates(thisDeviceID, availableSampleRates);
1623
1624                                         if (wErr != eNoErr)
1625                                         {
1626                                                 DEBUG_MSG ("Failed to get device available sample rates. Device ID: " << m_DeviceID);
1627                                                 delete pDevInfo;
1628                                                 continue; //proceed to the next device
1629                                         }
1630
1631                                         pDevInfo->m_AvailableSampleRates = availableSampleRates;
1632                                         pDevInfo->m_MaxInputChannels = pPaDeviceInfo->maxInputChannels;
1633                                         pDevInfo->m_MaxOutputChannels = pPaDeviceInfo->maxOutputChannels;
1634
1635                                         //Get available buffer sizes
1636                                         std::vector<int> availableBuffers;
1637                                         wErr = getDeviceAvailableBufferSizes(thisDeviceID, availableBuffers);
1638
1639                                         if (wErr != eNoErr)
1640                                         {
1641                                                 DEBUG_MSG ("Failed to get device available buffer sizes. Device ID: " << m_DeviceID);
1642                                                 delete pDevInfo;
1643                                                 continue; //proceed to the next device
1644                                         }
1645
1646                                         pDevInfo->m_AvailableBufferSizes = availableBuffers;
1647
1648                                         //Now check if this device is acceptable according to current input/output settings
1649                                         bool bRejectDevice = false;
1650                                         switch(m_eAudioDeviceFilter)
1651                                         {
1652                                                 case eInputOnlyDevices:
1653                                                         if (pDevInfo->m_MaxInputChannels != 0)
1654                                                         {
1655                                                                 m_DeviceInfoVec.push_back(pDevInfo);
1656                                                         }
1657                                                         else
1658                                                         {
1659                                                                 // Delete unnecesarry device
1660                                                                 bRejectDevice = true;
1661                                                         }
1662                                                         break;
1663                                                 case eOutputOnlyDevices:
1664                                                         if (pDevInfo->m_MaxOutputChannels != 0)
1665                                                         {
1666                                                                 m_DeviceInfoVec.push_back(pDevInfo);
1667                                                         }
1668                                                         else
1669                                                         {
1670                                                                 // Delete unnecesarry device
1671                                                                 bRejectDevice = true;
1672                                                         }
1673                                                         break;
1674                                                 case eFullDuplexDevices:
1675                                                         if (pDevInfo->m_MaxInputChannels != 0 && pDevInfo->m_MaxOutputChannels != 0)
1676                                                         {
1677                                                                 m_DeviceInfoVec.push_back(pDevInfo);
1678                                                         }
1679                                                         else
1680                                                         {
1681                                                                 // Delete unnecesarry device
1682                                                                 bRejectDevice = true;
1683                                                         }
1684                                                         break;
1685                                                 case eAllDevices:
1686                                                 default:
1687                                                         m_DeviceInfoVec.push_back(pDevInfo);
1688                                                         break;
1689                                         }
1690
1691                                         if(bRejectDevice)
1692                                         {
1693                                                 TRACE_MSG ("API::PortAudioDeviceManager::Device " << pDevInfo->m_DeviceName << "Rejected. \
1694                                                                         In Channels = " << pDevInfo->m_MaxInputChannels << "Out Channels = " <<pDevInfo->m_MaxOutputChannels );
1695                                                 delete pDevInfo;
1696                                         }
1697                                 }
1698                         }
1699                         catch (...)
1700                         {
1701                                 std::cout << "API::PortAudioDeviceManager::Unabled to create PA Device: " << std::endl;
1702                                 DEBUG_MSG ("Unabled to create PA Device: " << thisDeviceID);
1703                         }
1704                 }
1705         }
1706
1707         //If no devices were found, that's not a good thing!
1708         if (m_DeviceInfoVec.empty() )
1709         {
1710                 std::cout << "API::PortAudioDeviceManager::No matching PortAudio devices were found, total PA devices = " << numDevices << std::endl;
1711                 DEBUG_MSG ("No matching PortAudio devices were found, total PA devices = " << numDevices);
1712         }
1713
1714         //we don't need PA initialized right now
1715         Pa_Terminate();
1716
1717         return retVal;
1718 }
1719
1720
1721 WTErr WCMRPortAudioDeviceManager::getDeviceSampleRatesImpl(const std::string & deviceName, std::vector<int>& sampleRates) const
1722 {
1723     sampleRates.clear ();
1724
1725     WTErr retVal = eNoErr;
1726
1727         if (m_CurrentDevice && deviceName == m_CurrentDevice->DeviceName() )
1728         {
1729                 sampleRates=m_CurrentDevice->SamplingRates();
1730                 return retVal;
1731         }
1732
1733     DeviceInfo devInfo;
1734         retVal = GetDeviceInfoByName(deviceName, devInfo);
1735
1736         if (eNoErr == retVal)
1737         {
1738                 sampleRates=devInfo.m_AvailableSampleRates;
1739         }
1740         else
1741         {
1742                 std::cout << "API::PortAudioDeviceManager::GetSampleRates: Device not found: "<< deviceName << std::endl;
1743         }
1744
1745         return retVal;
1746 }
1747
1748
1749 WTErr WCMRPortAudioDeviceManager::getDeviceBufferSizesImpl(const std::string & deviceName, std::vector<int>& buffers) const
1750 {
1751         WTErr retVal = eNoErr;
1752
1753         buffers.clear();
1754
1755         //first check if the request has been made for None device
1756         if (deviceName == m_NoneDevice->DeviceName() )
1757         {
1758                 buffers=m_NoneDevice->BufferSizes();
1759                 return retVal;
1760         }
1761
1762         if (m_CurrentDevice && deviceName == m_CurrentDevice->DeviceName() )
1763         {
1764                 buffers=m_CurrentDevice->BufferSizes();
1765                 return retVal;
1766         }
1767
1768         DeviceInfo devInfo;
1769         retVal = GetDeviceInfoByName(deviceName, devInfo);
1770
1771         if (eNoErr == retVal)
1772         {
1773                 std::cout << "API::PortAudioDeviceManager::GetBufferSizes: got buffer :"<< devInfo.m_AvailableBufferSizes.front() << std::endl;
1774                 buffers = devInfo.m_AvailableBufferSizes;
1775         }
1776         else
1777         {
1778                 std::cout << "API::PortAudioDeviceManager::GetBufferSizes: Device not found: "<< deviceName << std::endl;
1779         }
1780
1781         return retVal;
1782 }