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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
parent
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commit
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84 changed files with 21936 additions and 0 deletions
268
libs/backends/wavesaudio/waves_midi_device.cc
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268
libs/backends/wavesaudio/waves_midi_device.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 "waves_midi_device.h"
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#include "waves_midi_event.h"
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// use non-zero latency because we want output to be timestapmed
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#define LATENCY 0
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#define QUEUE_LENGTH 1024
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using namespace ARDOUR;
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WavesMidiDevice::WavesMidiDevice (const std::string& device_name)
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: _pm_input_id (pmNoDevice)
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, _pm_output_id (pmNoDevice)
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, _name (device_name)
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, _input_queue (NULL)
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, _output_queue (NULL)
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, _input_pm_stream (NULL)
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, _output_pm_stream (NULL)
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, _incomplete_waves_midi_event (NULL)
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{
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validate ();
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}
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WavesMidiDevice::~WavesMidiDevice ()
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::~WavesMidiDevice ():" << name () << std::endl;
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close ();
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}
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void
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WavesMidiDevice::validate ()
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{
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_pm_input_id =
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_pm_output_id = pmNoDevice;
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int count = Pm_CountDevices ();
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for (int i = 0; i < count; i++) {
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const PmDeviceInfo* pm_device_info = Pm_GetDeviceInfo (i);
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if (pm_device_info == NULL) {
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continue;
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}
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if (name () == pm_device_info->name) {
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if (pm_device_info->input){
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_pm_input_id = i;
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}
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if (pm_device_info->output){
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_pm_output_id = i;
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}
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}
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}
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}
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int
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WavesMidiDevice::open (PmTimeProcPtr time_proc, void* time_info)
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::open ():" << name () << std::endl;
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if (is_input () && !_input_pm_stream) {
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if (pmNoError != Pm_OpenInput (&_input_pm_stream,
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_pm_input_id,
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NULL,
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1024,
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time_proc,
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time_info)) {
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std::cerr << "WavesMidiDevice::open (): Pm_OpenInput () failed for " << _pm_input_id << "-[" << name () << "]!" << std::endl;
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_input_pm_stream = NULL;
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_pm_input_id = pmNoDevice;
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return -1;
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}
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_input_queue = Pm_QueueCreate (QUEUE_LENGTH, sizeof (const WavesMidiEvent*));
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if (NULL == _input_queue) {
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std::cerr << "WavesMidiDevice::open (): _input_queue = Pm_QueueCreate () failed for " << _pm_input_id << "-[" << name () << "]!" << std::endl;
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close ();
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return -1;
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}
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}
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if (is_output () && !_output_pm_stream) {
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if (pmNoError != Pm_OpenOutput (&_output_pm_stream,
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_pm_output_id,
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NULL,
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1024,
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time_proc,
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time_info,
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LATENCY)) {
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std::cerr << "WavesMidiDevice::open (): Pm_OpenOutput () failed for " << _pm_output_id << "-[" << name () << "]!" << std::endl;
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_output_pm_stream = NULL;
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_pm_output_id = pmNoDevice;
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return -1;
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}
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_output_queue = Pm_QueueCreate (QUEUE_LENGTH, sizeof (const WavesMidiEvent*));
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if (NULL == _output_queue) {
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std::cerr << "WavesMidiDevice::open (): _output_queue = Pm_QueueCreate () failed for " << _pm_output_id << "-[" << name () << "]!" << std::endl;
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close ();
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return -1;
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}
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}
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return 0;
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}
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void
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WavesMidiDevice::close ()
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::close ():" << name () << std::endl;
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WavesMidiEvent *waves_midi_event;
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if (_input_pm_stream) {
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Pm_Close (_input_pm_stream);
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while (1 == Pm_Dequeue (_input_queue, &waves_midi_event)) {
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delete waves_midi_event;
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}
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Pm_QueueDestroy (_input_queue);
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_input_queue = NULL;
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_input_pm_stream = NULL;
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_pm_input_id = pmNoDevice;
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}
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if ( _output_pm_stream ) {
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Pm_Close (_output_pm_stream);
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while (1 == Pm_Dequeue (_output_queue, &waves_midi_event)) {
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delete waves_midi_event;
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}
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Pm_QueueDestroy (_output_queue);
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_output_queue = NULL;
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_output_pm_stream = NULL;
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_pm_output_id = pmNoDevice;
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}
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}
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void
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WavesMidiDevice::do_io ()
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{
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read_midi ();
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write_midi ();
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}
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void
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WavesMidiDevice::read_midi ()
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{
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if (NULL == _input_pm_stream) {
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return;
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}
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_read_midi (): " << _pm_device_id << "-[" << name () << "]" << std::endl;
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while (Pm_Poll (_input_pm_stream) > 0) {
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PmEvent pm_event; // just one message at a time
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int result = Pm_Read (_input_pm_stream, &pm_event, 1);
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if (result < 0) {
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std::cerr << "WavesMidiDevice::_read_midi (): Pm_Read () failed (" << result << ") for [" << name () << "]!" << std::endl;
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break;
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}
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_read_midi (): " << _pm_device_id << "-[" << name () << "] evt-tm:" << pm_event.timestamp << std::endl;
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if (_incomplete_waves_midi_event == NULL ) {
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_read_midi (): " << _pm_device_id << "-[" << name () << "] : new _incomplete_waves_midi_event" << std::endl;
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_incomplete_waves_midi_event = new WavesMidiEvent (pm_event.timestamp);
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}
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WavesMidiEvent *nested_pm_event = _incomplete_waves_midi_event->append_data (pm_event);
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if (nested_pm_event) {
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Pm_Enqueue (_input_queue, &nested_pm_event);
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_read_midi (): " << _pm_device_id << "-[" << name () << "] : Pm_Enqueue (_input_queue, nested_pm_event)" << std::endl;
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}
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switch ( _incomplete_waves_midi_event->state ()) {
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case WavesMidiEvent::BROKEN:
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delete _incomplete_waves_midi_event;
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_incomplete_waves_midi_event = NULL;
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_read_midi (): " << _pm_device_id << "-[" << name () << "] : case WavesMidiEvent::BROKEN:" << std::endl;
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break;
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case WavesMidiEvent::COMPLETE:
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_read_midi (): " << _pm_device_id << "-[" << name () << "] : Pm_Enqueue (_input_queue, _incomplete_waves_midi_event); " << std::hex << (void*)_incomplete_waves_midi_event << std::dec << std::endl;
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Pm_Enqueue (_input_queue, &_incomplete_waves_midi_event);
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_incomplete_waves_midi_event = NULL;
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break;
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default:
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break;
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}
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}
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}
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void
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WavesMidiDevice::write_midi ()
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{
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if (NULL == _output_pm_stream) {
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return;
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}
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_write_midi (): " << _pm_device_id << "-[" << name () << "]" << std::endl;
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PmError err;
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WavesMidiEvent *waves_midi_event;
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while (1 == Pm_Dequeue (_output_queue, &waves_midi_event)) {
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if (waves_midi_event->sysex ()) {
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// LATENCY compensation
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err = Pm_WriteSysEx (_output_pm_stream, waves_midi_event->timestamp () - LATENCY, waves_midi_event->data ());
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if (0 > err) {
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std::cout << "WavesMidiDevice::write_event_to_device (): [" << name () << "] Pm_WriteSysEx () failed (" << err << ")!" << std::endl;
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};
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_write_midi (): SYSEX used, ev->tm:" << waves_midi_event->timestamp () - LATENCY << std::endl;
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}
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else
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{
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err = Pm_WriteShort (_output_pm_stream, waves_midi_event->timestamp () - LATENCY, * (PmMessage*)waves_midi_event->data ());
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if (0 > err) {
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std::cout << "WavesMidiDevice::write_event_to_device (): [" << name () << "] Pm_WriteShort () failed (" << err << ")!" << std::endl;
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}
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::_write_midi (): SHORTMSG used, ev->tm:" << waves_midi_event->timestamp () - LATENCY << std::endl;
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}
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delete waves_midi_event;
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}
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return;
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}
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int
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WavesMidiDevice::enqueue_output_waves_midi_event (const WavesMidiEvent* waves_midi_event)
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{
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// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::enqueue_output_waves_midi_event (): " << _pm_device_id << "-[" << name () << "]" << std::endl;
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if (waves_midi_event == NULL) {
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std::cerr << "WavesMidiDevice::put_event_to_callback (): 'waves_midi_event' is NULL!" << std::endl;
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return -1;
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}
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PmError err = Pm_Enqueue (_output_queue, &waves_midi_event);
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if (0 > err) {
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std::cerr << "WavesMidiDevice::put_event_to_callback (): Pm_Enqueue () failed (" << err << ")!" << 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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WavesMidiEvent*
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WavesMidiDevice::dequeue_input_waves_midi_event ()
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{
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WavesMidiEvent* waves_midi_event;
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if (Pm_Dequeue (_input_queue, &waves_midi_event) == 1) {
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return waves_midi_event;
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}
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return NULL;
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}
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