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new audio engine backend for native CoreAudio audio I/O, and PortMIDI for MIDI.
Code builds, runs and functions. Full code review still pending, and some possibly changes to organization of code within the backend is possible
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Paul Davis
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84 changed files with 21936 additions and 0 deletions
354
libs/backends/wavesaudio/waves_audiobackend.midi.cc
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354
libs/backends/wavesaudio/waves_audiobackend.midi.cc
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/*
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Copyright (C) 2014 Waves Audio Ltd.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <boost/assign/list_of.hpp>
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#include "waves_audiobackend.h"
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#include "waves_midiport.h"
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#include "waves_midi_event.h"
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#include "waves_midi_buffer.h"
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using namespace ARDOUR;
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#ifdef __MACOS__
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const std::vector<std::string> WavesAudioBackend::__available_midi_options = boost::assign::list_of ("None") ("CoreMIDI");
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#elif _WINDOWS
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const std::vector<std::string> WavesAudioBackend::__available_midi_options = boost::assign::list_of ("None") ("Multimedia Extensions");
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#endif
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std::vector<std::string>
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WavesAudioBackend::enumerate_midi_options () const
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::enumerate_midi_options ()" << std::endl;
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return __available_midi_options;
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}
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int
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WavesAudioBackend::set_midi_option (const std::string& option)
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::set_midi_option ( " << option << " )" << std::endl;
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if (option == __available_midi_options[0]) {
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_use_midi = false;
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// COMMENTED DBG LOGS */ std::cout << "\tNO MIDI system used)" << std::endl;
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}
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else if (option == __available_midi_options[1]) {
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_use_midi = true;
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// COMMENTED DBG LOGS */ std::cout << "\tNO MIDI system used)" << std::endl;
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}
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else {
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std::cerr << "WavesAudioBackend::set_midi_option (): Invalid MIDI option!" << std::endl;
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return -1;
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}
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return 0;
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}
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std::string
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WavesAudioBackend::midi_option () const
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::midi_option ():" << std::endl;
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return * (__available_midi_options.begin () + (_use_midi?1:0));
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}
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int
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WavesAudioBackend::midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buffer, void* port_buffer, uint32_t event_index)
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{
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// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_event_get ():" << std::endl;
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if (buffer == NULL) {
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std::cerr << "WavesAudioBackend::midi_event_get () : NULL in the 'buffer' argument!\n";
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return -1;
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}
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if (port_buffer == NULL) {
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std::cerr << "WavesAudioBackend::midi_event_get () : NULL in the 'port_buffer' argument!\n";
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return -1;
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}
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WavesMidiBuffer& source = * (WavesMidiBuffer*)port_buffer;
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if (event_index >= source.size ()) {
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std::cerr << "WavesAudioBackend::midi_event_get () : 'event_index' is out of the number of events stored in 'port_buffer'!\n";
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return -1;
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}
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WavesMidiEvent* waves_midi_event = source[event_index];
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timestamp = waves_midi_event->timestamp ();
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size = waves_midi_event->size ();
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*buffer = waves_midi_event->data ();
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return 0;
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}
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int
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WavesAudioBackend::midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size)
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{
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// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_event_put ():" << std::endl;
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if (buffer == NULL) {
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std::cerr << "WavesAudioBackend::midi_event_put () : NULL in the 'buffer' argument!\n";
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return -1;
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}
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if (port_buffer == NULL) {
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std::cerr << "WavesAudioBackend::midi_event_put () : NULL in the 'port_buffer' argument!\n";
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return -1;
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}
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WavesMidiBuffer& target = * (WavesMidiBuffer*)port_buffer;
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// COMMENTED FREQUENT DBG LOGS */ std::cout << "\t [" << target.name () << "]"<< std::endl;
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if (target.size () && (pframes_t)target.back ()->timestamp () > timestamp) {
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std::cerr << "WavesAudioBackend::midi_event_put (): The MIDI Event to put is a bit late!" << std::endl;
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std::cerr << "\tprev timestamp is " << (pframes_t)target.back ()->timestamp () << " as the current one is " << timestamp << std::endl;
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return -1;
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}
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target.push_back (new WavesMidiEvent (timestamp, buffer, size));
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return 0;
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}
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uint32_t
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WavesAudioBackend::get_midi_event_count (void* port_buffer)
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{
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// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::get_midi_event_count (): " << std::endl;
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if (port_buffer == NULL) {
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std::cerr << "WavesAudioBackend::get_midi_event_count () : NULL in the 'port_buffer' argument!\n";
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return -1;
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}
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// COMMENTED FREQUENT DBG LOGS */ std::cout << "\tcount = " << (* (WavesMidiBuffer*)port_buffer).size () << std::endl;
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return (* (WavesMidiBuffer*)port_buffer).size ();
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}
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void
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WavesAudioBackend::midi_clear (void* port_buffer)
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{
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// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::midi_clear (): " << std::endl;
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if (port_buffer == NULL) {
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std::cerr << "WavesAudioBackend::midi_clear () : NULL in the 'port_buffer' argument!\n";
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return;
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}
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(* (WavesMidiBuffer*)port_buffer).clear ();
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}
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void
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WavesAudioBackend::_changed_midi_devices ()
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{
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if (_midi_device_manager.stream (false)) {
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std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.stream (false) failed!" << std::endl;
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return;
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}
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_midi_device_manager.stop ();
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if (_midi_device_manager.start () != 0) {
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std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.start () failed!" << std::endl;
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return;
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}
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if (_register_system_midi_ports () != 0) {
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std::cerr << "WavesAudioBackend::_changed_midi_devices (): _register_system_midi_ports () failed!" << std::endl;
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return;
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}
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manager.registration_callback ();
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if (_midi_device_manager.stream (true)) {
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std::cerr << "WavesAudioBackend::_changed_midi_devices (): _midi_device_manager.stream (true) failed!" << std::endl;
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return;
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}
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}
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void
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WavesAudioBackend::_unregister_system_midi_ports ()
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_unregister_system_midi_ports ()" << std::endl;
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std::vector<WavesMidiPort*> physical_midi_ports = _physical_midi_inputs;
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physical_midi_ports.insert (physical_midi_ports.begin (), _physical_midi_outputs.begin (), _physical_midi_outputs.end ());
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for (std::vector<WavesMidiPort*>::const_iterator it = physical_midi_ports.begin (); it != physical_midi_ports.end (); ++it) {
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std::vector<WavesDataPort*>::iterator port_iterator = std::find (_ports.begin (), _ports.end (), *it);
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if (port_iterator == _ports.end ()) {
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std::cerr << "WavesAudioBackend::_unregister_system_midi_ports (): Failed to find port [" << (*it)->name () << "]!" << std::endl;
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}
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else
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_ports.erase (port_iterator);
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delete *it;
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}
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_physical_midi_inputs.clear ();
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_physical_midi_outputs.clear ();
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}
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int
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WavesAudioBackend::_register_system_midi_ports ()
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesAudioBackend::_register_system_midi_ports ()" << std::endl;
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LatencyRange lr = {0,0};
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lr.min = lr.max = _buffer_size;
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for (size_t i = 0; i<_ports.size ();) {
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WavesMidiPort* midi_port = dynamic_cast<WavesMidiPort*> (_ports[i]);
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if (!midi_port || !midi_port->is_physical () || !midi_port->is_terminal ()) {
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++i;
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continue;
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}
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if ((midi_port->is_input () && !midi_port->midi_device ()->is_output ()) ||
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(midi_port->is_output () && !midi_port->midi_device ()->is_input ())) {
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disconnect_all (midi_port);
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unregister_port (midi_port);
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continue; // to be here for further additions in the end of this loop
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}
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++i;
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}
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const std::vector<WavesMidiDevice *>& devices = _midi_device_manager.devices ();
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for (std::vector<WavesMidiDevice*>::const_iterator it = devices.begin (); it != devices.end (); ++it) {
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if ((*it)->is_input ()) {
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std::string port_name = "system_midi:" + (*it)->name () + " capture";
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WavesDataPort* port = _find_port (port_name);
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WavesMidiPort* midi_port = dynamic_cast<WavesMidiPort*> (port);
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if (midi_port && (midi_port->type () != DataType::MIDI ||
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midi_port->midi_device () != *it ||
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!midi_port->is_output () ||
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!midi_port->is_physical () ||
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!midi_port->is_terminal ())) {
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std::cerr << "WavesAudioBackend::_register_system_midi_ports (): the port [" << midi_port->name () << "] is inconsystently constructed!" << std::endl;
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disconnect_all (midi_port);
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unregister_port (midi_port);
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port = NULL;
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}
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if (port == NULL) {
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port = _register_port ( port_name, DataType::MIDI , static_cast<ARDOUR::PortFlags> (IsOutput | IsPhysical | IsTerminal));
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if (port == NULL) {
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return -1;
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}
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((WavesMidiPort*)port)->set_midi_device (*it);
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}
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port->set_latency_range (lr, false);
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}
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if ((*it)->is_output ()) {
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std::string port_name = "system_midi:" + (*it)->name () + " playback";
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WavesDataPort* port = _find_port (port_name);
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WavesMidiPort* midi_port = dynamic_cast<WavesMidiPort*> (port);
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if (midi_port && (midi_port->type () != DataType::MIDI ||
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midi_port->midi_device () != *it ||
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!midi_port->is_input () ||
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!midi_port->is_physical () ||
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!midi_port->is_terminal ())) {
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std::cerr << "WavesAudioBackend::_register_system_midi_ports (): the port [" << midi_port->name () << "] is inconsystently constructed!" << std::endl;
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disconnect_all (midi_port);
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unregister_port (midi_port);
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}
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if (port == NULL) {
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port = _register_port (port_name,
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DataType::MIDI,
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static_cast<ARDOUR::PortFlags> (IsInput | IsPhysical | IsTerminal));
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if (port == NULL) {
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return -1;
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}
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}
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((WavesMidiPort*)port)->set_midi_device ((*it));
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port->set_latency_range (lr, true);
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}
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}
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return 0;
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}
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int
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WavesAudioBackend::_read_midi_data_from_devices ()
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{
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// COMMENTED FREQUENT DBG LOGS */ std::cout << "WavesAudioBackend::_read_midi_data_from_devices ():" << std::endl;
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if (!_midi_device_manager.is_streaming ())
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return 0;
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_midi_device_manager.do_read ();
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for (std::vector<WavesMidiPort*>::iterator it = _physical_midi_inputs.begin (); it != _physical_midi_inputs.end (); ++it) {
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WavesMidiDevice* midi_device = (*it)->midi_device ();
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WavesMidiBuffer& waves_midi_buffer = (*it)->buffer ();
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waves_midi_buffer.clear ();
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while (WavesMidiEvent *waves_midi_event = midi_device->dequeue_input_waves_midi_event ()) {
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int32_t timestamp_st = _buffer_size - (_sample_time_at_cycle_start - waves_midi_event->timestamp ());
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if (timestamp_st < 0) {
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timestamp_st = 0;
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}
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else if (timestamp_st >= (int32_t)_buffer_size) {
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timestamp_st = _buffer_size - 1;
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}
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waves_midi_event->set_timestamp (timestamp_st);
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waves_midi_buffer.push_back (waves_midi_event);
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}
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}
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return 0;
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}
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int
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WavesAudioBackend::_write_midi_data_to_devices (pframes_t nframes)
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{
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if (!_midi_device_manager.is_streaming ())
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return 0;
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for (std::vector<WavesMidiPort*>::iterator it = _physical_midi_outputs.begin (); it != _physical_midi_outputs.end (); ++it) {
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WavesMidiDevice* midi_device = (*it)->midi_device ();
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WavesMidiBuffer &waves_midi_buffer = * (WavesMidiBuffer*) (*it)->get_buffer (nframes);
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for (WavesMidiBufferIterator it = waves_midi_buffer.begin (); it != waves_midi_buffer.end ();) {
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WavesMidiEvent* waves_midi_event = *it;
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waves_midi_buffer.erase (it);
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waves_midi_event->set_timestamp (_sample_time_at_cycle_start + waves_midi_event->timestamp () + nframes);
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midi_device->enqueue_output_waves_midi_event (waves_midi_event);
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}
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}
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_midi_device_manager.do_write ();
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return 0;
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}
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