From 7e3576bb90722be660f47bc56973ece5a48ebd74 Mon Sep 17 00:00:00 2001 From: Valeriy Kamyshniy Date: Tue, 27 May 2014 22:51:39 -0400 Subject: [PATCH] [P4/git history rebuild] --- .../wavesaudio/waves_audiobackend.midi.cc | 707 +++++++++--------- 1 file changed, 353 insertions(+), 354 deletions(-) diff --git a/libs/backends/wavesaudio/waves_audiobackend.midi.cc b/libs/backends/wavesaudio/waves_audiobackend.midi.cc index 94c674d073..13019b9a99 100644 --- a/libs/backends/wavesaudio/waves_audiobackend.midi.cc +++ b/libs/backends/wavesaudio/waves_audiobackend.midi.cc @@ -1,354 +1,353 @@ -/* - 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 - -#include "waves_audiobackend.h" -#include "waves_midiport.h" -#include "waves_midi_event.h" -#include "waves_midi_buffer.h" - -using namespace ARDOUR; - -#ifdef __MACOS__ - -const std::vector WavesAudioBackend::__available_midi_options = boost::assign::list_of ("None") ("CoreMIDI"); - -#elif _WINDOWS - -const std::vector WavesAudioBackend::__available_midi_options = boost::assign::list_of ("None") ("Multimedia Extensions"); - -#endif - - -std::vector -WavesAudioBackend::enumerate_midi_options () const -{ - // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::enumerate_midi_options ()" << std::endl; - return __available_midi_options; -} - - -int -WavesAudioBackend::set_midi_option (const std::string& option) -{ - // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_midi_option ( " << option << " )" << std::endl; - if (option == __available_midi_options[0]) { - _use_midi = false; - // COMMENTED DBG LOGS */ std::cout << "\tNO MIDI system used)" << std::endl; - } - else if (option == __available_midi_options[1]) { - _use_midi = true; - // COMMENTED DBG LOGS */ std::cout << "\tNO MIDI system used)" << std::endl; - } - else { - std::cerr << "WavesAudioBackend::set_midi_option (): Invalid MIDI option!" << std::endl; - return -1; - } - - return 0; -} - - -std::string -WavesAudioBackend::midi_option () const -{ - // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::midi_option ():" << std::endl; - return * (__available_midi_options.begin () + (_use_midi?1:0)); -} - - -int -WavesAudioBackend::midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buffer, void* port_buffer, uint32_t event_index) -{ - // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_event_get ():" << std::endl; - - if (buffer == NULL) { - std::cerr << "WavesAudioBackend::midi_event_get () : NULL in the 'buffer' argument!\n"; - return -1; - } - - if (port_buffer == NULL) { - std::cerr << "WavesAudioBackend::midi_event_get () : NULL in the 'port_buffer' argument!\n"; - return -1; - } - - WavesMidiBuffer& source = * (WavesMidiBuffer*)port_buffer; - - if (event_index >= source.size ()) { - std::cerr << "WavesAudioBackend::midi_event_get () : 'event_index' is out of the number of events stored in 'port_buffer'!\n"; - return -1; - } - - WavesMidiEvent* waves_midi_event = source[event_index]; - - timestamp = waves_midi_event->timestamp (); - size = waves_midi_event->size (); - *buffer = waves_midi_event->data (); - - return 0; -} - - -int -WavesAudioBackend::midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size) -{ - // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_event_put ():" << std::endl; - if (buffer == NULL) { - std::cerr << "WavesAudioBackend::midi_event_put () : NULL in the 'buffer' argument!\n"; - return -1; - } - - if (port_buffer == NULL) { - std::cerr << "WavesAudioBackend::midi_event_put () : NULL in the 'port_buffer' argument!\n"; - return -1; - } - - WavesMidiBuffer& target = * (WavesMidiBuffer*)port_buffer; - // COMMENTED FREQUENT DBG LOGS */ std::cout << "\t [" << target.name () << "]"<< std::endl; - - if (target.size () && (pframes_t)target.back ()->timestamp () > timestamp) { - std::cerr << "WavesAudioBackend::midi_event_put (): The MIDI Event to put is a bit late!" << std::endl; - std::cerr << "\tprev timestamp is " << (pframes_t)target.back ()->timestamp () << " as the current one is " << timestamp << std::endl; - return -1; - } - - target.push_back (new WavesMidiEvent (timestamp, buffer, size)); - return 0; -} - - -uint32_t -WavesAudioBackend::get_midi_event_count (void* port_buffer) -{ - // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::get_midi_event_count (): " << std::endl; - - if (port_buffer == NULL) { - std::cerr << "WavesAudioBackend::get_midi_event_count () : NULL in the 'port_buffer' argument!\n"; - return -1; - } - - // COMMENTED FREQUENT DBG LOGS */ std::cout << "\tcount = " << (* (WavesMidiBuffer*)port_buffer).size () << std::endl; - - return (* (WavesMidiBuffer*)port_buffer).size (); -} - - -void -WavesAudioBackend::midi_clear (void* port_buffer) -{ - // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_clear (): " << std::endl; - if (port_buffer == NULL) { - std::cerr << "WavesAudioBackend::midi_clear () : NULL in the 'port_buffer' argument!\n"; - return; - } - - (* (WavesMidiBuffer*)port_buffer).clear (); -} - - -void -WavesAudioBackend::_changed_midi_devices () -{ - if (_midi_device_manager.stream (false)) { - std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.stream (false) failed!" << std::endl; - return; - } - - _midi_device_manager.stop (); - - if (_midi_device_manager.start () != 0) { - std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.start () failed!" << std::endl; - return; - } - - if (_register_system_midi_ports () != 0) { - std::cerr << "WavesAudioBackend::_changed_midi_devices (): _register_system_midi_ports () failed!" << std::endl; - return; - } - - manager.registration_callback (); - - if (_midi_device_manager.stream (true)) { - std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.stream (true) failed!" << std::endl; - return; - } -} - - -void -WavesAudioBackend::_unregister_system_midi_ports () -{ - // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_unregister_system_midi_ports ()" << std::endl; - std::vector physical_midi_ports = _physical_midi_inputs; - physical_midi_ports.insert (physical_midi_ports.begin (), _physical_midi_outputs.begin (), _physical_midi_outputs.end ()); - - for (std::vector::const_iterator it = physical_midi_ports.begin (); it != physical_midi_ports.end (); ++it) { - std::vector::iterator port_iterator = std::find (_ports.begin (), _ports.end (), *it); - if (port_iterator == _ports.end ()) { - std::cerr << "WavesAudioBackend::_unregister_system_midi_ports (): Failed to find port [" << (*it)->name () << "]!" << std::endl; - } - else - _ports.erase (port_iterator); - delete *it; - } - _physical_midi_inputs.clear (); - _physical_midi_outputs.clear (); -} - - -int -WavesAudioBackend::_register_system_midi_ports () -{ - // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_register_system_midi_ports ()" << std::endl; - - LatencyRange lr = {0,0}; - lr.min = lr.max = _buffer_size; - - for (size_t i = 0; i<_ports.size ();) { - WavesMidiPort* midi_port = dynamic_cast (_ports[i]); - if (!midi_port || !midi_port->is_physical () || !midi_port->is_terminal ()) { - ++i; - continue; - } - - if ((midi_port->is_input () && !midi_port->midi_device ()->is_output ()) || - (midi_port->is_output () && !midi_port->midi_device ()->is_input ())) { - disconnect_all (midi_port); - unregister_port (midi_port); - continue; // to be here for further additions in the end of this loop - } - - ++i; - } - - const std::vector& devices = _midi_device_manager.devices (); - - for (std::vector::const_iterator it = devices.begin (); it != devices.end (); ++it) { - if ((*it)->is_input ()) { - std::string port_name = "system_midi:" + (*it)->name () + " capture"; - WavesDataPort* port = _find_port (port_name); - WavesMidiPort* midi_port = dynamic_cast (port); - if (midi_port && (midi_port->type () != DataType::MIDI || - midi_port->midi_device () != *it || - !midi_port->is_output () || - !midi_port->is_physical () || - !midi_port->is_terminal ())) { - std::cerr << "WavesAudioBackend::_register_system_midi_ports (): the port [" << midi_port->name () << "] is inconsystently constructed!" << std::endl; - disconnect_all (midi_port); - unregister_port (midi_port); - port = NULL; - } - - if (port == NULL) { - port = _register_port ( port_name, DataType::MIDI , static_cast (IsOutput | IsPhysical | IsTerminal)); - if (port == NULL) { - return -1; - } - ((WavesMidiPort*)port)->set_midi_device (*it); - } - port->set_latency_range (lr, false); - } - - if ((*it)->is_output ()) { - std::string port_name = "system_midi:" + (*it)->name () + " playback"; - WavesDataPort* port = _find_port (port_name); - WavesMidiPort* midi_port = dynamic_cast (port); - if (midi_port && (midi_port->type () != DataType::MIDI || - midi_port->midi_device () != *it || - !midi_port->is_input () || - !midi_port->is_physical () || - !midi_port->is_terminal ())) { - std::cerr << "WavesAudioBackend::_register_system_midi_ports (): the port [" << midi_port->name () << "] is inconsystently constructed!" << std::endl; - disconnect_all (midi_port); - unregister_port (midi_port); - } - - if (port == NULL) { - port = _register_port (port_name, - DataType::MIDI, - static_cast (IsInput | IsPhysical | IsTerminal)); - if (port == NULL) { - return -1; - } - } - - ((WavesMidiPort*)port)->set_midi_device ((*it)); - port->set_latency_range (lr, true); - } - } - - return 0; -} - - -int -WavesAudioBackend::_read_midi_data_from_devices () -{ - // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::_read_midi_data_from_devices ():" << std::endl; - if (!_midi_device_manager.is_streaming ()) - return 0; - - _midi_device_manager.do_read (); - - for (std::vector::iterator it = _physical_midi_inputs.begin (); it != _physical_midi_inputs.end (); ++it) { - WavesMidiDevice* midi_device = (*it)->midi_device (); - - WavesMidiBuffer& waves_midi_buffer = (*it)->buffer (); - waves_midi_buffer.clear (); - - while (WavesMidiEvent *waves_midi_event = midi_device->dequeue_input_waves_midi_event ()) { - int32_t timestamp_st = _buffer_size - (_sample_time_at_cycle_start - waves_midi_event->timestamp ()); - - if (timestamp_st < 0) { - timestamp_st = 0; - } - else if (timestamp_st >= (int32_t)_buffer_size) { - timestamp_st = _buffer_size - 1; - } - waves_midi_event->set_timestamp (timestamp_st); - waves_midi_buffer.push_back (waves_midi_event); - } - } - return 0; -} - - -int -WavesAudioBackend::_write_midi_data_to_devices (pframes_t nframes) -{ - if (!_midi_device_manager.is_streaming ()) - return 0; - - for (std::vector::iterator it = _physical_midi_outputs.begin (); it != _physical_midi_outputs.end (); ++it) { - WavesMidiDevice* midi_device = (*it)->midi_device (); - WavesMidiBuffer &waves_midi_buffer = * (WavesMidiBuffer*) (*it)->get_buffer (nframes); - - for (WavesMidiBufferIterator it = waves_midi_buffer.begin (); it != waves_midi_buffer.end ();) { - WavesMidiEvent* waves_midi_event = *it; - - waves_midi_buffer.erase (it); - - waves_midi_event->set_timestamp (_sample_time_at_cycle_start + waves_midi_event->timestamp () + nframes); - midi_device->enqueue_output_waves_midi_event (waves_midi_event); - } - } - _midi_device_manager.do_write (); - return 0; -} +/* + Copyright (C) 2013 Valeriy Kamyshniy + + 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 + +#include "waves_audiobackend.h" +#include "waves_midiport.h" +#include "waves_midi_event.h" +#include "waves_midi_buffer.h" + +using namespace ARDOUR; + +#ifdef __MACOS__ + +const std::vector WavesAudioBackend::__available_midi_options = boost::assign::list_of ("None") ("CoreMIDI"); + +#elif _WINDOWS + +const std::vector WavesAudioBackend::__available_midi_options = boost::assign::list_of ("None") ("Multimedia Extensions"); + +#endif + + +std::vector +WavesAudioBackend::enumerate_midi_options () const +{ + // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::enumerate_midi_options ()" << std::endl; + return __available_midi_options; +} + + +int +WavesAudioBackend::set_midi_option (const std::string& option) +{ + // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_midi_option ( " << option << " )" << std::endl; + if (option == __available_midi_options[0]) { + _use_midi = false; + // COMMENTED DBG LOGS */ std::cout << "\tNO MIDI system used)" << std::endl; + } + else if (option == __available_midi_options[1]) { + _use_midi = true; + // COMMENTED DBG LOGS */ std::cout << "\tNO MIDI system used)" << std::endl; + } + else { + std::cerr << "WavesAudioBackend::set_midi_option (): Invalid MIDI option!" << std::endl; + return -1; + } + + return 0; +} + + +std::string +WavesAudioBackend::midi_option () const +{ + // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::midi_option ():" << std::endl; + return * (__available_midi_options.begin () + (_use_midi?1:0)); +} + + +int +WavesAudioBackend::midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buffer, void* port_buffer, uint32_t event_index) +{ + // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_event_get ():" << std::endl; + + if (buffer == NULL) { + std::cerr << "WavesAudioBackend::midi_event_get () : NULL in the 'buffer' argument!\n"; + return -1; + } + + if (port_buffer == NULL) { + std::cerr << "WavesAudioBackend::midi_event_get () : NULL in the 'port_buffer' argument!\n"; + return -1; + } + + WavesMidiBuffer& source = * (WavesMidiBuffer*)port_buffer; + + if (event_index >= source.size ()) { + std::cerr << "WavesAudioBackend::midi_event_get () : 'event_index' is out of the number of events stored in 'port_buffer'!\n"; + return -1; + } + + WavesMidiEvent* waves_midi_event = source[event_index]; + + timestamp = waves_midi_event->timestamp (); + size = waves_midi_event->size (); + *buffer = waves_midi_event->data (); + + return 0; +} + + +int +WavesAudioBackend::midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size) +{ + // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_event_put ():" << std::endl; + if (buffer == NULL) { + std::cerr << "WavesAudioBackend::midi_event_put () : NULL in the 'buffer' argument!\n"; + return -1; + } + + if (port_buffer == NULL) { + std::cerr << "WavesAudioBackend::midi_event_put () : NULL in the 'port_buffer' argument!\n"; + return -1; + } + + WavesMidiBuffer& target = * (WavesMidiBuffer*)port_buffer; + // COMMENTED FREQUENT DBG LOGS */ std::cout << "\t [" << target.name () << "]"<< std::endl; + + if (target.size () && (pframes_t)target.back ()->timestamp () > timestamp) { + std::cerr << "WavesAudioBackend::midi_event_put (): The MIDI Event to put is a bit late!" << std::endl; + std::cerr << "\tprev timestamp is " << (pframes_t)target.back ()->timestamp () << " as the current one is " << timestamp << std::endl; + return -1; + } + + target.push_back (new WavesMidiEvent (timestamp, buffer, size)); + return 0; +} + + +uint32_t +WavesAudioBackend::get_midi_event_count (void* port_buffer) +{ + // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::get_midi_event_count (): " << std::endl; + + if (port_buffer == NULL) { + std::cerr << "WavesAudioBackend::get_midi_event_count () : NULL in the 'port_buffer' argument!\n"; + return -1; + } + + // COMMENTED FREQUENT DBG LOGS */ std::cout << "\tcount = " << (* (WavesMidiBuffer*)port_buffer).size () << std::endl; + + return (* (WavesMidiBuffer*)port_buffer).size (); +} + + +void +WavesAudioBackend::midi_clear (void* port_buffer) +{ + // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_clear (): " << std::endl; + if (port_buffer == NULL) { + std::cerr << "WavesAudioBackend::midi_clear () : NULL in the 'port_buffer' argument!\n"; + return; + } + + (* (WavesMidiBuffer*)port_buffer).clear (); +} + + +void +WavesAudioBackend::_changed_midi_devices () +{ + if (_midi_device_manager.stream (false)) { + std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.stream (false) failed!" << std::endl; + return; + } + + _midi_device_manager.stop (); + + if (_midi_device_manager.start () != 0) { + std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.start () failed!" << std::endl; + return; + } + + if (_register_system_midi_ports () != 0) { + std::cerr << "WavesAudioBackend::_changed_midi_devices (): _register_system_midi_ports () failed!" << std::endl; + return; + } + + manager.registration_callback (); + + if (_midi_device_manager.stream (true)) { + std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.stream (true) failed!" << std::endl; + return; + } +} + + +void +WavesAudioBackend::_unregister_system_midi_ports () +{ + // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_unregister_system_midi_ports ()" << std::endl; + std::vector physical_midi_ports = _physical_midi_inputs; + physical_midi_ports.insert (physical_midi_ports.begin (), _physical_midi_outputs.begin (), _physical_midi_outputs.end ()); + + for (std::vector::const_iterator it = physical_midi_ports.begin (); it != physical_midi_ports.end (); ++it) { + std::vector::iterator port_iterator = std::find (_ports.begin (), _ports.end (), *it); + if (port_iterator == _ports.end ()) { + std::cerr << "WavesAudioBackend::_unregister_system_midi_ports (): Failed to find port [" << (*it)->name () << "]!" << std::endl; + } + else + _ports.erase (port_iterator); + delete *it; + } + _physical_midi_inputs.clear (); + _physical_midi_outputs.clear (); +} + + +int +WavesAudioBackend::_register_system_midi_ports () +{ + // COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_register_system_midi_ports ()" << std::endl; + + LatencyRange lr = {0,0}; + lr.min = lr.max = _buffer_size; + + for (size_t i = 0; i<_ports.size ();) { + WavesMidiPort* midi_port = dynamic_cast (_ports[i]); + if (!midi_port || !midi_port->is_physical () || !midi_port->is_terminal ()) { + ++i; + continue; + } + + if ((midi_port->is_input () && !midi_port->midi_device ()->is_output ()) || + (midi_port->is_output () && !midi_port->midi_device ()->is_input ())) { + disconnect_all (midi_port); + unregister_port (midi_port); + continue; // to be here for further additions in the end of this loop + } + + ++i; + } + + const std::vector& devices = _midi_device_manager.devices (); + + for (std::vector::const_iterator it = devices.begin (); it != devices.end (); ++it) { + if ((*it)->is_input ()) { + std::string port_name = "system_midi:" + (*it)->name () + " capture"; + WavesDataPort* port = _find_port (port_name); + WavesMidiPort* midi_port = dynamic_cast (port); + if (midi_port && (midi_port->type () != DataType::MIDI || + midi_port->midi_device () != *it || + !midi_port->is_output () || + !midi_port->is_physical () || + !midi_port->is_terminal ())) { + std::cerr << "WavesAudioBackend::_register_system_midi_ports (): the port [" << midi_port->name () << "] is inconsystently constructed!" << std::endl; + disconnect_all (midi_port); + unregister_port (midi_port); + port = NULL; + } + + if (port == NULL) { + port = _register_port ( port_name, DataType::MIDI , static_cast (IsOutput | IsPhysical | IsTerminal)); + if (port == NULL) { + return -1; + } + ((WavesMidiPort*)port)->set_midi_device (*it); + } + port->set_latency_range (lr, false); + } + + if ((*it)->is_output ()) { + std::string port_name = "system_midi:" + (*it)->name () + " playback"; + WavesDataPort* port = _find_port (port_name); + WavesMidiPort* midi_port = dynamic_cast (port); + if (midi_port && (midi_port->type () != DataType::MIDI || + midi_port->midi_device () != *it || + !midi_port->is_input () || + !midi_port->is_physical () || + !midi_port->is_terminal ())) { + std::cerr << "WavesAudioBackend::_register_system_midi_ports (): the port [" << midi_port->name () << "] is inconsystently constructed!" << std::endl; + disconnect_all (midi_port); + unregister_port (midi_port); + } + + if (port == NULL) { + port = _register_port (port_name, + DataType::MIDI, + static_cast (IsInput | IsPhysical | IsTerminal)); + if (port == NULL) { + return -1; + } + } + + ((WavesMidiPort*)port)->set_midi_device ((*it)); + port->set_latency_range (lr, true); + } + } + + return 0; +} + + +int +WavesAudioBackend::_read_midi_data_from_devices () +{ + // COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::_read_midi_data_from_devices ():" << std::endl; + if (!_midi_device_manager.is_streaming ()) + return 0; + + _midi_device_manager.do_read (); + + for (std::vector::iterator it = _physical_midi_inputs.begin (); it != _physical_midi_inputs.end (); ++it) { + WavesMidiDevice* midi_device = (*it)->midi_device (); + + WavesMidiBuffer& waves_midi_buffer = (*it)->buffer (); + waves_midi_buffer.clear (); + + while (WavesMidiEvent *waves_midi_event = midi_device->dequeue_input_waves_midi_event ()) { + int32_t timestamp_st = _buffer_size - (_sample_time_at_cycle_start - waves_midi_event->timestamp ()); + + if (timestamp_st < 0) { + timestamp_st = 0; + } + else if (timestamp_st >= (int32_t)_buffer_size) { + timestamp_st = _buffer_size - 1; + } + waves_midi_event->set_timestamp (timestamp_st); + waves_midi_buffer.push_back (waves_midi_event); + } + } + return 0; +} + + +int +WavesAudioBackend::_write_midi_data_to_devices (pframes_t nframes) +{ + if (!_midi_device_manager.is_streaming ()) + return 0; + + for (std::vector::iterator it = _physical_midi_outputs.begin (); it != _physical_midi_outputs.end (); ++it) { + WavesMidiDevice* midi_device = (*it)->midi_device (); + WavesMidiBuffer &waves_midi_buffer = * (WavesMidiBuffer*) (*it)->get_buffer (nframes); + + for (WavesMidiBufferIterator it = waves_midi_buffer.begin (); it != waves_midi_buffer.end ();) { + WavesMidiEvent* waves_midi_event = *it; + + waves_midi_buffer.erase (it); + + waves_midi_event->set_timestamp (_sample_time_at_cycle_start + waves_midi_event->timestamp () + nframes); + midi_device->enqueue_output_waves_midi_event (waves_midi_event); + } + } + _midi_device_manager.do_write (); + return 0; +}