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livetrax/libs/backends/wavesaudio/waves_audiobackend.cc
Paul Davis 000609901b add correct copyright statements to all files in Waves backend except those derived from portaudio/portmidi 
This follows the letter sent from Waves Audio Ltd. to Paul Davis dated February 20th 2014 agreeing to release this code
under the GNU Public License, version 2, with copyright owned by Waves Audio Ltd
2014-10-07 16:17:34 -04:00

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/*
Copyright (C) 2014 Waves Audio Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "waves_audiobackend.h"
#include "waves_audioport.h"
#include "waves_midiport.h"
using namespace ARDOUR;
#if defined __MINGW64__ || defined __MINGW32__
extern "C" __declspec(dllexport) ARDOUR::AudioBackendInfo* descriptor ()
#else
extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
#endif
{
// COMMENTED DBG LOGS */ std::cout << "waves_backend.dll : ARDOUR::AudioBackendInfo* descriptor (): " << std::endl;
return &WavesAudioBackend::backend_info ();
}
void WavesAudioBackend::AudioDeviceManagerNotification (NotificationReason reason, void* parameter)
{
switch (reason) {
case WCMRAudioDeviceManagerClient::DeviceDebugInfo:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::DeviceDebugInfo -- " << (char*)parameter << std::endl;
break;
case WCMRAudioDeviceManagerClient::BufferSizeChanged:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::BufferSizeChanged: " << *(uint32_t*)parameter << std::endl;
_buffer_size_change(*(uint32_t*)parameter);
break;
case WCMRAudioDeviceManagerClient::RequestReset:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::RequestReset" << std::endl;
engine.request_backend_reset();
break;
case WCMRAudioDeviceManagerClient::RequestResync:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::RequestResync" << std::endl;
break;
case WCMRAudioDeviceManagerClient::SamplingRateChanged:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::SamplingRateChanged: " << *(float*)parameter << std::endl;
set_sample_rate(*(float*)parameter);
break;
case WCMRAudioDeviceManagerClient::Dropout:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::Dropout: " << std::endl;
break;
case WCMRAudioDeviceManagerClient::DeviceDroppedSamples:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::DeviceDroppedSamples" << std::endl;
break;
case WCMRAudioDeviceManagerClient::DeviceStoppedStreaming:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::DeviceStoppedStreaming" << std::endl;
break;
case WCMRAudioDeviceManagerClient::DeviceStartsStreaming:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::DeviceStartsStreaming" << std::endl;
_call_thread_init_callback = true; // streaming will be started from device side, just set thread init flag
break;
case WCMRAudioDeviceManagerClient::DeviceConnectionLost:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::DeviceConnectionLost" << std::endl;
break;
case WCMRAudioDeviceManagerClient::DeviceListChanged:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::DeviceListChanged" << std::endl;
engine.request_device_list_update();
break;
case WCMRAudioDeviceManagerClient::IODeviceDisconnected:
std::cout << "------------------------------- WCMRAudioDeviceManagerClient::DeviceListChanged" << std::endl;
engine.request_device_list_update();
break;
case WCMRAudioDeviceManagerClient::AudioCallback:
if (parameter) {
AudioCallbackData* audio_callback_data = (AudioCallbackData*)parameter;
_audio_device_callback (
audio_callback_data->acdInputBuffer,
audio_callback_data->acdOutputBuffer,
audio_callback_data->acdFrames,
audio_callback_data->acdSampleTime,
audio_callback_data->acdCycleStartTimeNanos
);
}
break;
default:
break;
};
}
WavesAudioBackend::WavesAudioBackend (AudioEngine& e)
: AudioBackend (e, __backend_info)
, _audio_device_manager (this)
, _midi_device_manager (*this)
, _device (NULL)
, _sample_format (FormatFloat)
, _interleaved (true)
, _input_channels (0)
, _max_input_channels (0)
, _output_channels (0)
, _max_output_channels (0)
, _sample_rate (0)
, _buffer_size (0)
, _systemic_input_latency (0)
, _systemic_output_latency (0)
, _call_thread_init_callback (false)
, _use_midi (true)
, _sample_time_at_cycle_start (0)
, _freewheeling (false)
, _freewheel_thread_active (false)
, _audio_cycle_period_nanos (0)
, _dsp_load_accumulator (0)
, _dsp_load_history_length(0)
{
}
WavesAudioBackend::~WavesAudioBackend ()
{
}
std::string
WavesAudioBackend::name () const
{
#ifdef __APPLE__
return std::string ("CoreAudio");
#elif PLATFORM_WINDOWS
return std::string ("ASIO");
#endif
}
bool
WavesAudioBackend::is_realtime () const
{
return true;
}
bool
WavesAudioBackend::requires_driver_selection () const
{
return false;
}
std::vector<std::string>
WavesAudioBackend::enumerate_drivers () const
{
// this backend does not suppose driver selection
assert (false);
return std::vector<std::string> ();
}
int
WavesAudioBackend::set_driver (const std::string& /*drivername*/)
{
//Waves audio backend does not suppose driver selection
assert (false);
return -1;
}
std::vector<AudioBackend::DeviceStatus>
WavesAudioBackend::enumerate_devices () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::enumerate_devices (): " << std::endl;
std::vector<DeviceStatus> devicesStatus;
const DeviceInfoVec& deviceInfoList = _audio_device_manager.DeviceInfoList();
for (DeviceInfoVecConstIter deviceInfoIter = deviceInfoList.begin (); deviceInfoIter != deviceInfoList.end (); ++deviceInfoIter) {
// COMMENTED DBG LOGS */ std::cout << "\t Device found: " << (*deviceInfoIter)->m_DeviceName << std::endl;
devicesStatus.push_back (DeviceStatus ((*deviceInfoIter)->m_DeviceName, true));
}
return devicesStatus;
}
std::vector<float>
WavesAudioBackend::available_sample_rates (const std::string& device_name) const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::available_sample_rates (): [" << device_name << "]" << std::endl;
std::vector<int> sr;
WTErr retVal = _audio_device_manager.GetDeviceSampleRates(device_name, sr);
if (eNoErr != retVal) {
std::cerr << "WavesAudioBackend::available_sample_rates (): Failed to find device [" << device_name << "]" << std::endl;
return std::vector<float> ();
}
// COMMENTED DBG LOGS */ std::cout << "\tFound " << devInfo.m_AvailableSampleRates.size () << " sample rates for " << device_name << ":";
std::vector<float> sample_rates (sr.begin (), sr.end ());
// COMMENTED DBG LOGS */ for (std::vector<float>::iterator i = sample_rates.begin (); i != sample_rates.end (); ++i) std::cout << " " << *i; std::cout << std::endl;
return sample_rates;
}
float WavesAudioBackend::default_sample_rate () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::default_sample_rate (): " << AudioBackend::default_sample_rate () << std::endl;
return AudioBackend::default_sample_rate ();
}
std::vector<uint32_t>
WavesAudioBackend::available_buffer_sizes (const std::string& device_name) const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::available_buffer_sizes (): [" << device_name << "]" << std::endl;
std::vector<int> bs;
WTErr retVal = _audio_device_manager.GetDeviceBufferSizes(device_name, bs);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::available_buffer_sizes (): Failed to get buffer size for device [" << device_name << "]" << std::endl;
return std::vector<uint32_t> ();
}
std::vector<uint32_t> buffer_sizes (bs.begin (), bs.end ());
// COMMENTED DBG LOGS */ std::cout << "\tFound " << buffer_sizes.size () << " buffer sizes for " << device_name << ":";
// COMMENTED DBG LOGS */ for (std::vector<uint32_t>::const_iterator i = buffer_sizes.begin (); i != buffer_sizes.end (); ++i) std::cout << " " << *i; std::cout << std::endl;
return buffer_sizes;
}
uint32_t
WavesAudioBackend::available_input_channel_count (const std::string& device_name) const
{
DeviceInfo devInfo;
WTErr err = _audio_device_manager.GetDeviceInfoByName(device_name, devInfo);
if (eNoErr != err) {
std::cerr << "WavesAudioBackend::available_input_channel_count (): Failed to find device [" << device_name << "]" << std::endl;
return 0;
}
uint32_t num_of_input_channels = devInfo.m_MaxInputChannels;
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::available_input_channel_count (): " << num_of_input_channels << std::endl;
return num_of_input_channels;
}
uint32_t
WavesAudioBackend::available_output_channel_count (const std::string& device_name) const
{
DeviceInfo devInfo;
WTErr err = _audio_device_manager.GetDeviceInfoByName(device_name, devInfo);
if (eNoErr != err) {
std::cerr << "WavesAudioBackend::available_output_channel_count (): Failed to find device [" << device_name << "]" << std::endl;
return 0;
}
uint32_t num_of_output_channels = devInfo.m_MaxOutputChannels;
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::available_output_channel_count (): " << num_of_output_channels << std::endl;
return num_of_output_channels;
}
bool
WavesAudioBackend::can_change_sample_rate_when_running () const
{
// VERIFY IT CAREFULLY
return true;
}
bool
WavesAudioBackend::can_change_buffer_size_when_running () const
{
// VERIFY IT CAREFULLY
return true;
}
int
WavesAudioBackend::set_device_name (const std::string& device_name)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_device_name (): " << device_name << std::endl;
if (_ports.size ()) {
std::cerr << "WavesAudioBackend::set_device_name (): There are unregistered ports left after [" << (_device ? _device->DeviceName () : std::string ("<NULL>")) << "]!" << std::endl;
for (size_t i = 0; i < _ports.size (); ++i) {
std::cerr << "\t[" << _ports[i]->name () << "]!" << std::endl;
}
return -1;
}
if (_device && _device->Streaming () ) {
std::cerr << "WavesAudioBackend::set_device_name (): [" << _device->DeviceName () << "] is streaming! Current device must be stopped before setting another device as current" << std::endl;
}
// we must have only one device initialized at a time
// stop current device first
WTErr retVal;
if (_device) {
retVal = _device->SetActive (false);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_device_name (): [" << _device->DeviceName () << "]->SetActive (false) failed!" << std::endl;
return -1;
}
}
// deinitialize it
_audio_device_manager.DestroyCurrentDevice();
_device = 0;
WCMRAudioDevice * device = _audio_device_manager.InitNewCurrentDevice(device_name);
if (!device) {
std::cerr << "WavesAudioBackend::set_device_name (): Failed to initialize device [" << device_name << "]!" << std::endl;
return -1;
}
retVal = device->SetActive (true);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_device_name (): [" << device->DeviceName () << "]->SetActive () failed!" << std::endl;
return -1;
}
_device = device;
return 0;
}
int
WavesAudioBackend::drop_device()
{
WTErr wtErr = 0;
if (_device)
{
wtErr = _device->SetActive (false);
if (wtErr != eNoErr) {
std::cerr << "WavesAudioBackend::drop_device (): [" << _device->DeviceName () << "]->SetActive () failed!" << std::endl;
return -1;
}
}
_audio_device_manager.DestroyCurrentDevice();
_device = 0;
return 0;
}
int
WavesAudioBackend::set_sample_rate (float sample_rate)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_sample_rate (): " << sample_rate << std::endl;
WTErr retVal = eNoErr;
if (!_device) {
std::cerr << "WavesAudioBackend::set_sample_rate (): No device is set!" << std::endl;
return -1;
}
bool device_needs_restart = _device->Streaming ();
if (device_needs_restart) {
retVal = _device->SetStreaming (false);
// COMMENTED DBG LOGS */ std::cout << "\t\t[" << _device->DeviceName() << "]->_device->SetStreaming (false);"<< std::endl;
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_sample_rate (): [" << _device->DeviceName () << "]->SetStreaming (false) failed (" << retVal << ") !" << std::endl;
return -1;
}
}
retVal = _device->SetCurrentSamplingRate ((int)sample_rate);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_sample_rate (): [" << _device->DeviceName() << "]->SetCurrentSamplingRate ((int)" << sample_rate << ") failed (" << retVal << ") !" << std::endl;
return -1;
}
_sample_rate_change(sample_rate);
if (device_needs_restart) {
// COMMENTED DBG LOGS */ std::cout << "\t\t[" << _device->DeviceName() << "]->SetStreaming (true);"<< std::endl;
_call_thread_init_callback = true;
retVal = _device->SetStreaming (true);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_sample_rate (): [" << _device->DeviceName () << "]->SetStreaming (true) failed (" << retVal << ") !" << std::endl;
return -1;
}
}
return 0;
}
int
WavesAudioBackend::set_buffer_size (uint32_t buffer_size)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_buffer_size (" << buffer_size << "):"<< std::endl;
WTErr retVal = eNoErr;
if (!_device) {
std::cerr << "WavesAudioBackend::set_buffer_size (): No device is set!" << std::endl;
return -1;
}
bool device_needs_restart = _device->Streaming ();
if (device_needs_restart) {
retVal = _device->SetStreaming (false);
// COMMENTED DBG LOGS */ std::cout << "\t\t[" << _device->DeviceName() << "]->SetStreaming (false);"<< std::endl;
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_buffer_size (): [" << _device->DeviceName () << "]->SetStreaming (false) failed (" << retVal << ") !" << std::endl;
return -1;
}
}
retVal = _device->SetCurrentBufferSize (buffer_size);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_buffer_size (): [" << _device->DeviceName() << "]->SetCurrentBufferSize (" << buffer_size << ") failed (" << retVal << ") !" << std::endl;
return -1;
}
// if call to set buffer is successful but device buffer size differs from the value we tried to set
// this means we are driven by device for buffer size
buffer_size = _device->CurrentBufferSize ();
_buffer_size_change(buffer_size);
if (device_needs_restart) {
// COMMENTED DBG LOGS */ std::cout << "\t\t[" << _device->DeviceName() << "]->SetStreaming (true);"<< std::endl;
_call_thread_init_callback = true;
retVal = _device->SetStreaming (true);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::set_buffer_size (): [" << _device->DeviceName () << "]->SetStreaming (true) failed (" << retVal << ") !" << std::endl;
return -1;
}
}
return 0;
}
int
WavesAudioBackend::set_sample_format (SampleFormat sample_format)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_sample_format (): " << sample_format << std::endl;
_sample_format = sample_format;
return 0;
}
int
WavesAudioBackend::reset_device ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_reset_device ():" << std::endl;
WTErr retVal = eNoErr;
if (!_device) {
std::cerr << "WavesAudioBackend::set_buffer_size (): No device is set!" << std::endl;
return -1;
}
return _device->ResetDevice();
}
int
WavesAudioBackend::_buffer_size_change (uint32_t new_buffer_size)
{
_buffer_size = new_buffer_size;
_init_dsp_load_history();
return engine.buffer_size_change (new_buffer_size);
}
int
WavesAudioBackend::_sample_rate_change (float new_sample_rate)
{
_sample_rate = new_sample_rate;
_init_dsp_load_history();
return engine.sample_rate_change (new_sample_rate);
}
int
WavesAudioBackend::set_interleaved (bool yn)
{
/*you can ignore them totally*/
_interleaved = yn;
return 0;
}
int
WavesAudioBackend::set_input_channels (uint32_t input_channels)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_input_channels (): " << input_channels << std::endl;
_input_channels = input_channels;
return 0;
}
int
WavesAudioBackend::set_output_channels (uint32_t output_channels)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_output_channels (): " << output_channels << std::endl;
_output_channels = output_channels;
return 0;
}
std::string
WavesAudioBackend::device_name () const
{
if (!_device) {
return "";
}
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::device_name (): " << _device->DeviceName () << std::endl;
return _device->DeviceName ();
}
float
WavesAudioBackend::sample_rate () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::sample_rate (): " << std::endl;
if (!_device) {
std::cerr << "WavesAudioBackend::sample_rate (): No device is set!" << std::endl;
return -1;
}
int sample_rate = _device->CurrentSamplingRate ();
// COMMENTED DBG LOGS */ std::cout << "\t[" << _device->DeviceName () << "]->CurrentSamplingRate () returned " << sample_rate << std::endl;
return (float)sample_rate;
}
uint32_t
WavesAudioBackend::buffer_size () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::buffer_size (): " << std::endl;
if (!_device) {
std::cerr << "WavesAudioBackend::buffer_size (): No device is set!" << std::endl;
return 0;
}
int size = _device->CurrentBufferSize ();
// COMMENTED DBG LOGS */ std::cout << "\t[" << _device->DeviceName () << "]->CurrentBufferSize () returned " << size << std::endl;
return (uint32_t)size;
}
SampleFormat
WavesAudioBackend::sample_format () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::sample_format ()" << std::endl;
return _sample_format;
}
bool
WavesAudioBackend::interleaved () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::interleaved ()" << std::endl;
return _interleaved;
}
uint32_t
WavesAudioBackend::input_channels () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::input_channels ()" << std::endl;
return _input_channels;
}
uint32_t
WavesAudioBackend::output_channels () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::output_channels ()" << std::endl;
return _output_channels;
}
std::string
WavesAudioBackend::control_app_name () const
{
std::string app_name = "";
if (_device && !dynamic_cast<WCMRNativeAudioNoneDevice*> (_device)) {
app_name = "PortAudioMayKnowIt";
}
return app_name;
}
void
WavesAudioBackend::launch_control_app ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::launch_control_app ()" << std::endl;
if (!_device) {
std::cerr << "WavesAudioBackend::launch_control_app (): No device is set!" << std::endl;
return;
}
WTErr err = _device->ShowConfigPanel (NULL);
if (eNoErr != err) {
std::cerr << "WavesAudioBackend::launch_control_app (): [" << _device->DeviceName () << "]->ShowConfigPanel () failed (" << err << ")!" << std::endl;
}
// COMMENTED DBG LOGS */ else std::cout << "WavesAudioBackend::launch_control_app (): [" << _device->DeviceName () << "]->ShowConfigPanel () successfully launched!" << std::endl;
}
int
WavesAudioBackend::_start (bool for_latency_measurement)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_start ()" << std::endl;
if (!_device) {
std::cerr << "WavesAudioBackend::_start (): No device is set!" << std::endl;
stop();
return -1;
}
if (_register_system_audio_ports () != 0) {
std::cerr << "WavesAudioBackend::_start (): _register_system_audio_ports () failed!" << std::endl;
stop();
return -1;
}
if (_use_midi) {
if (_midi_device_manager.start () != 0) {
std::cerr << "WavesAudioBackend::_start (): _midi_device_manager.start () failed!" << std::endl;
stop();
return -1;
}
if (_register_system_midi_ports () != 0) {
std::cerr << "WavesAudioBackend::_start (): _register_system_midi_ports () failed!" << std::endl;
stop();
return -1;
}
}
if (engine.reestablish_ports () != 0) {
std::cerr << "WavesAudioBackend::_start (): engine.reestablish_ports () failed!" << std::endl;
}
manager.registration_callback ();
_call_thread_init_callback = true;
WTErr retVal = _device->SetStreaming (true);
if (retVal != eNoErr) {
std::cerr << "WavesAudioBackend::_start (): [" << _device->DeviceName () << "]->SetStreaming () failed!" << std::endl;
stop();
return -1;
}
if (_use_midi) {
if (_midi_device_manager.stream (true)) {
std::cerr << "WavesAudioBackend::_start (): _midi_device_manager.stream (true) failed!" << std::endl;
stop();
return -1;
}
}
return 0;
}
void
WavesAudioBackend::_audio_device_callback (const float* input_buffer,
float* output_buffer,
unsigned long nframes,
pframes_t sample_time,
uint64_t cycle_start_time_nanos)
{
uint64_t dsp_start_time_nanos = __get_time_nanos();
// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::_audio_device_callback ():" << _device->DeviceName () << std::endl;
_sample_time_at_cycle_start = sample_time;
_cycle_start_time_nanos = cycle_start_time_nanos;
if (_buffer_size != nframes) {
// COMMENTED DBG LOGS */ std::cout << "\tAudioEngine::thread_init_callback() buffer size and nframes are not equal: " << _buffer_size << "!=" << nframes << std::endl;
return;
}
_read_audio_data_from_device (input_buffer, nframes);
_read_midi_data_from_devices ();
if (_call_thread_init_callback) {
_call_thread_init_callback = false;
// COMMENTED DBG LOGS */ std::cout << "\tAudioEngine::thread_init_callback() invoked for " << std::hex << pthread_self() << std::dec << " !" << std::endl;
AudioEngine::thread_init_callback (this);
}
engine.process_callback (nframes);
_write_audio_data_to_device (output_buffer, nframes);
_write_midi_data_to_devices (nframes);
uint64_t dsp_end_time_nanos = __get_time_nanos();
_dsp_load_accumulator -= *_dsp_load_history.begin();
_dsp_load_history.pop_front();
uint64_t dsp_load_nanos = dsp_end_time_nanos - dsp_start_time_nanos;
_dsp_load_accumulator += dsp_load_nanos;
_dsp_load_history.push_back(dsp_load_nanos);
return;
}
int
WavesAudioBackend::stop ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::stop ()" << std::endl;
WTErr wtErr = eNoErr;
int retVal = 0;
// COMMENTED DBG LOGS */ std::cout << "\t[" << _device->DeviceName () << "]" << std::endl;
if (_device) {
wtErr = _device->SetStreaming (false);
if (wtErr != eNoErr) {
std::cerr << "WavesAudioBackend::stop (): [" << _device->DeviceName () << "]->SetStreaming () failed!" << std::endl;
retVal = -1;
}
}
_midi_device_manager.stop ();
_unregister_system_audio_ports ();
_unregister_system_midi_ports ();
return retVal;
}
int
WavesAudioBackend::freewheel (bool start_stop)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::freewheel (" << start_stop << "):" << std::endl;
if (start_stop != _freewheeling) {
if (start_stop == true) {
WTErr retval = _device->SetStreaming (false);
if (retval != eNoErr) {
std::cerr << "WavesAudioBackend::freewheel (): [" << _device->DeviceName () << "]->SetStreaming () failed!" << std::endl;
return -1;
}
_call_thread_init_callback = true;
_freewheel_thread ();
engine.freewheel_callback (start_stop);
}
else {
_freewheel_thread_active = false; // stop _freewheel_thread ()
engine.freewheel_callback (start_stop);
_call_thread_init_callback = true;
WTErr retval = _device->SetStreaming (true);
if (retval != eNoErr) {
std::cerr << "WavesAudioBackend::freewheel (): [" << _device->DeviceName () << "]->SetStreaming () failed!" << std::endl;
return -1;
}
}
_freewheeling = start_stop;
}
// already doing what has been asked for
return 0;
}
void
WavesAudioBackend::_freewheel_thread ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_freewheel_thread ():" << std::endl;
if (!_freewheel_thread_active) { // Lets create it
// COMMENTED DBG LOGS */ std::cout << "\tCreating the thread _freewheel_thread () . . ." << std::endl;
pthread_attr_t attributes;
pthread_t thread_id;
ThreadData* thread_data = new ThreadData (this, boost::bind (&WavesAudioBackend::_freewheel_thread, this), __thread_stack_size ());
if (pthread_attr_init (&attributes)) {
std::cerr << "WavesAudioBackend::freewheel_thread (): pthread_attr_init () failed!" << std::endl;
return;
}
if (pthread_attr_setstacksize (&attributes, __thread_stack_size ())) {
std::cerr << "WavesAudioBackend::freewheel_thread (): pthread_attr_setstacksize () failed!" << std::endl;
return;
}
_freewheel_thread_active = false;
if ((pthread_create (&thread_id, &attributes, __start_process_thread, thread_data))) {
_freewheel_thread_active = true;
std::cerr << "WavesAudioBackend::freewheel_thread (): pthread_create () failed!" << std::endl;
return;
}
// COMMENTED DBG LOGS */ std::cout << "\t. . . _freewheel_thread () complete." << std::endl;
return;
}
if (_call_thread_init_callback) {
_call_thread_init_callback = false;
AudioEngine::thread_init_callback (this);
}
while (_freewheel_thread_active) {
engine.process_callback (_buffer_size);
}
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_freewheel_thread (): FINISHED" << std::endl;
return;
}
float
WavesAudioBackend::dsp_load () const
{
// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::dsp_load (): " << std::endl;
if (!_device) {
std::cerr << "WavesAudioBackend::cpu_load (): No device is set!" << std::endl;
return 0;
}
float average_dsp_load = (float)_dsp_load_accumulator/_dsp_load_history_length;
return ( average_dsp_load / _audio_cycle_period_nanos)*100.0;
}
void
WavesAudioBackend::_init_dsp_load_history()
{
if((_sample_rate <= 0.0) || (_buffer_size <= 0.0)) {
return;
}
_audio_cycle_period_nanos = ((uint64_t)1000000000L * _buffer_size) / _sample_rate;
_dsp_load_accumulator = 0;
_dsp_load_history_length = (_sample_rate + _buffer_size - 1) / _buffer_size;
// COMMENTED DBG LOGS */ std::cout << "\t\t_dsp_load_history_length = " << _dsp_load_history_length << std::endl;
_dsp_load_history = std::list<uint64_t>(_dsp_load_history_length, 0);
}
void
WavesAudioBackend::transport_start ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::transport_start (): " << std::endl;
}
void
WavesAudioBackend::transport_stop ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::transport_stop (): " << std::endl;
}
TransportState
WavesAudioBackend::transport_state () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::transport_state (): " << std::endl;
return TransportStopped;
}
void
WavesAudioBackend::transport_locate (framepos_t pos)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::transport_locate (" << pos << "): " << std::endl;
}
framepos_t
WavesAudioBackend::transport_frame () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::transport_frame (): " << std::endl;
return 0;
}
int
WavesAudioBackend::set_time_master (bool yn)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_time_master (): " << yn << std::endl;
return 0;
}
int
WavesAudioBackend::usecs_per_cycle () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::usecs_per_cycle (): " << std::endl;
return (1000000 * _sample_rate) / _buffer_size;
}
size_t
WavesAudioBackend::raw_buffer_size (DataType data_type)
{
// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::raw_buffer_size (" << data_type.to_string () << "): " << std::endl;
switch (data_type) {
case DataType::AUDIO:
return WavesAudioPort::MAX_BUFFER_SIZE_BYTES;
break;
case DataType::MIDI:
return WavesMidiPort::MAX_BUFFER_SIZE_BYTES;
break;
default:
std::cerr << "WavesAudioBackend::raw_buffer_size (): unexpected data type (" << (uint32_t)data_type <<")!" << std::endl;
break;
}
return 0;
}
pframes_t
WavesAudioBackend::sample_time ()
{
// WARNING: This is approximate calculation. Implementation of accurate calculation is pending.
// http://kokkinizita.linuxaudio.org/papers/usingdll.pdf
return _sample_time_at_cycle_start + ((__get_time_nanos () - _cycle_start_time_nanos)*_sample_rate)/1000000000L;
}
uint64_t
WavesAudioBackend::__get_time_nanos ()
{
#ifdef __APPLE__
// here we exploit the time counting API which is used by the WCMRCoreAudioDeviceManager. However,
// the API should be a part of WCMRCoreAudioDeviceManager to give a chance of being tied to the
// audio device transport timeß.
return AudioConvertHostTimeToNanos (AudioGetCurrentHostTime ());
#elif PLATFORM_WINDOWS
LARGE_INTEGER Count;
QueryPerformanceCounter (&Count);
return uint64_t ((Count.QuadPart * 1000000000L / __performance_counter_frequency));
#endif
}
pframes_t
WavesAudioBackend::sample_time_at_cycle_start ()
{
// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::sample_time_at_cycle_start (): " << _sample_time_at_cycle_start << std::endl;
return _sample_time_at_cycle_start;
}
pframes_t
WavesAudioBackend::samples_since_cycle_start ()
{
pframes_t diff_sample_time;
diff_sample_time = sample_time () - _sample_time_at_cycle_start;
// COMMENTED DBG LOGS */ std::cout << "samples_since_cycle_start: " << diff_sample_time << std::endl;
return diff_sample_time;
}
bool
WavesAudioBackend::get_sync_offset (pframes_t& /*offset*/) const
{
// COMMENTED DBG LOGS */ std::cout << "get_sync_offset: false" << std::endl;
return false;
}
int
WavesAudioBackend::create_process_thread (boost::function<void ()> func)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::create_process_thread ():" << std::endl;
int retVal;
pthread_attr_t attributes;
size_t stacksize_aligned;
pthread_t thread_id;
// Align stacksize to PTHREAD_STACK_MIN.
stacksize_aligned = __thread_stack_size ();
ThreadData* td = new ThreadData (this, func, stacksize_aligned);
if ((retVal = pthread_attr_init (&attributes))) {
std::cerr << "Cannot set thread attr init res = " << retVal << endmsg;
return -1;
}
if ((retVal = pthread_attr_setstacksize (&attributes, stacksize_aligned))) {
std::cerr << "Cannot set thread stack size (" << stacksize_aligned << ") res = " << retVal << endmsg;
return -1;
}
if ((retVal = pthread_create (&thread_id, &attributes, __start_process_thread, td))) {
std::cerr << "Cannot create thread res = " << retVal << endmsg;
return -1;
}
_backend_threads.push_back (thread_id);
// COMMENTED DBG LOGS */ std::cout << "\t\t\t. . . thread " << std::hex << thread_id << std::dec << " has been created" << std::endl;
return 0;
}
void*
WavesAudioBackend::__start_process_thread (void* arg)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::__start_process_thread ():" << std::endl;
ThreadData* td = reinterpret_cast<ThreadData*> (arg);
boost::function<void ()> f = td->f;
delete td;
f ();
return 0;
}
int
WavesAudioBackend::join_process_threads ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::join_process_thread ()" << std::endl;
int ret = 0;
for (std::vector<pthread_t>::const_iterator i = _backend_threads.begin ();
i != _backend_threads.end ();
++i) {
// COMMENTED DBG LOGS */ std::cout << "\t\t\tstopping thread " << std::hex << *i << std::dec << "...\n";
void* status;
if (pthread_join (*i, &status) != 0) {
std::cerr << "AudioEngine: cannot stop process thread !" << std::endl;
ret += -1;
}
// COMMENTED DBG LOGS */ std::cout << "\t\t\t\t...done" << std::endl;
}
// COMMENTED DBG LOGS */ std::cout << "\t\t\tall threads finished..." << std::endl;
_backend_threads.clear ();
// COMMENTED DBG LOGS */ std::cout << "\t\t\tthread list cleared..." << std::endl;
return ret;
}
bool
WavesAudioBackend::in_process_thread ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::in_process_thread ()" << std::endl;
for (std::vector<pthread_t>::const_iterator i = _backend_threads.begin ();
i != _backend_threads.end (); i++) {
if (pthread_equal (*i, pthread_self ()) != 0) {
return true;
}
}
return false;
}
size_t
WavesAudioBackend::__thread_stack_size ()
{
// Align stacksize to PTHREAD_STACK_MIN.
#if defined (__APPLE__)
return (((thread_stack_size () - 1) / PTHREAD_STACK_MIN) + 1) * PTHREAD_STACK_MIN;
#elif defined (PLATFORM_WINDOWS)
return thread_stack_size ();
#endif
}
uint32_t
WavesAudioBackend::process_thread_count ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::process_thread_count (): returns " << _backend_threads.size () << std::endl;
return _backend_threads.size ();
}
void
WavesAudioBackend::_read_audio_data_from_device (const float* input_buffer, pframes_t nframes)
{
#if defined(PLATFORM_WINDOWS)
const float **buffer = (const float**)input_buffer;
size_t copied_bytes = nframes*sizeof(float);
for(std::vector<WavesAudioPort*>::iterator it = _physical_audio_inputs.begin ();
it != _physical_audio_inputs.end();
++it)
{
memcpy((*it)->buffer(), *buffer, copied_bytes);
++buffer;
}
#else
std::vector<WavesAudioPort*>::iterator it = _physical_audio_inputs.begin ();
// Well, let's de-interleave here:
const Sample* source = input_buffer;
for (uint32_t chann_cnt = 0; (chann_cnt < _max_input_channels) && (it != _physical_audio_inputs.end ()); ++chann_cnt, ++source, ++it) {
const Sample* src = source;
Sample* tgt = (*it)->buffer ();
for (uint32_t frame = 0; frame < nframes; ++frame, src += _max_input_channels, ++tgt) {
*tgt = *src;
}
}
#endif
}
void
WavesAudioBackend::_write_audio_data_to_device (float* output_buffer, pframes_t nframes)
{
#if defined(_WnonononoINDOWS)
float **buffer = (float**)output_buffer;
size_t copied_bytes = nframes*sizeof(float);
int i = 0;
for(std::vector<WavesAudioPort*>::iterator it = _physical_audio_outputs.begin ();
it != _physical_audio_outputs.end();
++it)
{
memcpy(*buffer, (*it)->buffer(), copied_bytes);
//*buffer = (*it)->buffer();
buffer++;
}
#else
// Well, let's interleave here:
std::vector<WavesAudioPort*>::iterator it = _physical_audio_outputs.begin ();
Sample* target = output_buffer;
for (uint32_t chann_cnt = 0;
(chann_cnt < _max_output_channels) && (it != _physical_audio_outputs.end ());
++chann_cnt, ++target, ++it) {
const Sample* src = (Sample*) ((*it)->get_buffer (nframes));
Sample* tgt = target;
for (uint32_t frame = 0; frame < nframes; ++frame, tgt += _max_output_channels, ++src) {
*tgt = *src;
}
}
#endif
}
static boost::shared_ptr<WavesAudioBackend> __instance;
boost::shared_ptr<AudioBackend>
WavesAudioBackend::__waves_backend_factory (AudioEngine& e)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::__waves_backend_factory ():" << std::endl;
if (!__instance) {
__instance.reset (new WavesAudioBackend (e));
}
return __instance;
}
#if defined(PLATFORM_WINDOWS)
uint64_t WavesAudioBackend::__performance_counter_frequency;
#endif
int
WavesAudioBackend::__instantiate (const std::string& arg1, const std::string& arg2)
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::__instantiate ():" << "[" << arg1 << "], [" << arg2 << "]" << std::endl;
__instantiated_name = arg1;
#if defined(PLATFORM_WINDOWS)
LARGE_INTEGER Frequency;
QueryPerformanceFrequency(&Frequency);
__performance_counter_frequency = Frequency.QuadPart;
std::cout << "__performance_counter_frequency:" << __performance_counter_frequency << std::endl;
#endif
return 0;
}
int
WavesAudioBackend::__deinstantiate ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::__deinstantiate ():" << std::endl;
__instance.reset ();
return 0;
}
bool
WavesAudioBackend::__already_configured ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::__already_configured ():" << std::endl;
return false;
}
void*
WavesAudioBackend::private_handle () const
{
// COMMENTED DBG LOGS */ std::cout << "WHY DO CALL IT: WavesAudioBackend::private_handle: " << std::endl;
return NULL;
}
bool
WavesAudioBackend::available () const
{
// COMMENTED SECONDARY DBG LOGS */// std::cout << "WavesAudioBackend::available: " << std::endl;
return true;
}
const std::string&
WavesAudioBackend::my_name () const
{
// COMMENTED SECONDARY DBG LOGS */// std::cout << "WavesAudioBackend::my_name: " << _port_prefix_name << std::endl;
return __instantiated_name;
}
bool
WavesAudioBackend::can_monitor_input () const
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::can_monitor_input: " << std::endl;
return false;
}
std::string WavesAudioBackend::__instantiated_name;
AudioBackendInfo WavesAudioBackend::__backend_info = {
#ifdef __APPLE__
"CoreAudio",
#elif PLATFORM_WINDOWS
"ASIO",
#endif
__instantiate,
WavesAudioBackend::__deinstantiate,
WavesAudioBackend::__waves_backend_factory,
WavesAudioBackend::__already_configured,
};
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