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livetrax/libs/backends/wavesaudio/waves_audiobackend.cc
Robin Gareus d991bb10ca add 'available' interface to the AudioBackendInfo 
If a backend can be loaded, it does not mean that it can be used;
e.g. weak-linked jack-backend if libjack is not available.
2014-10-23 16:53:14 +02:00

1312 lines
40 KiB
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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)
, _dsp_load_accumulator (0)
, _audio_cycle_period_nanos (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;
/* There is the possibility that the thread this runs in may change from
* callback to callback, so do it every time.
*/
_main_thread = pthread_self ();
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;
if (pthread_equal (_main_thread, pthread_self()) != 0) {
return true;
}
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;
}
bool
WavesAudioBackend::__available ()
{
// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::__available ():" << std::endl;
return true;
}
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,
WavesAudioBackend::__available,
};
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