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livetrax/libs/backends/wavesaudio/waves_midi_device.cc

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/*
Copyright (C) 2013 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.
*/
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#include <iostream>
#include "pbd/error.h"
#include "pbd/debug.h"
#include "pbd/compose.h"
#include "pbd/stacktrace.h"
#include "waves_midi_device.h"
#include "waves_midi_event.h"
// use non-zero latency because we want output to be timestapmed
#define LATENCY 0
#define QUEUE_LENGTH 1024
using namespace ARDOUR;
using namespace PBD;
WavesMidiDevice::WavesMidiDevice (const std::string& device_name)
: _pm_input_id (pmNoDevice)
, _pm_output_id (pmNoDevice)
, _name (device_name)
, _input_queue (NULL)
, _output_queue (NULL)
, _input_pm_stream (NULL)
, _output_pm_stream (NULL)
, _incomplete_waves_midi_event (NULL)
{
_pm_input_id = _pm_output_id = pmNoDevice;
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) {
continue;
}
if (name () == pm_device_info->name) {
if (pm_device_info->input){
_pm_input_id = i;
}
if (pm_device_info->output){
_pm_output_id = i;
}
}
}
}
WavesMidiDevice::~WavesMidiDevice ()
{
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::~WavesMidiDevice (): %1\n", name()));
close ();
}
int
WavesMidiDevice::open (PmTimeProcPtr time_proc, void* time_info)
{
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::open (): %1", name ()));
if (is_input () ) {
// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::open (): INPUT" << _pm_input_id << "-[" << name () << "]" << std::endl;
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if (!_input_pm_stream) {
// create queue
if (!_input_queue) {
// COMMENTED DBG LOGS */ std::cout << " going to Pm_QueueCreate for INPUT: " << std::endl;
_input_queue = Pm_QueueCreate (QUEUE_LENGTH, sizeof (const WavesMidiEvent*));
// COMMENTED DBG LOGS */ std::cout << " DONE : " << std::endl;
if (NULL == _input_queue) {
std::cerr << "WavesMidiDevice::open (): _input_queue = Pm_QueueCreate () failed for " << _pm_input_id << "-[" << name () << "]!" << std::endl;
return -1;
}
}
// create stream
// COMMENTED DBG LOGS */ std::cout << " going to Pm_OpenInput : " << std::endl;
if (pmNoError != Pm_OpenInput (&_input_pm_stream,
_pm_input_id,
NULL,
1024,
time_proc,
time_info)) {
// COMMENTED DBG LOGS */ std::cout << " DONE : " << std::endl;
char* err_msg = new char[256];
Pm_GetHostErrorText(err_msg, 256);
std::cerr << "WavesMidiDevice::open (): Pm_OpenInput () failed for " << _pm_input_id << "-[" << name () << "]!" << std::endl;
std::cerr << " Port Midi Host Error: " << err_msg << std::endl;
close ();
return -1;
}
// COMMENTED DBG LOGS */ std::cout << " DONE : " << std::endl;
}
}
if (is_output () ) {
// COMMENTED DBG LOGS */ std::cout << "WavesMidiDevice::open (): OUTPUT" << _pm_output_id << "-[" << name () << "]" << std::endl;
if (!_output_pm_stream) {
// create queue
if (!_output_queue) {
// COMMENTED DBG LOGS */ std::cout << " going to Pm_QueueCreate for OUTPUT : " << std::endl;
_output_queue = Pm_QueueCreate (QUEUE_LENGTH, sizeof (const WavesMidiEvent*));
// COMMENTED DBG LOGS */ std::cout << " DONE : " << std::endl;
if (NULL == _output_queue) {
std::cerr << "WavesMidiDevice::open (): _output_queue = Pm_QueueCreate () failed for " << _pm_output_id << "-[" << name () << "]!" << std::endl;
return -1;
}
}
// create stream
// COMMENTED DBG LOGS */ std::cout << " going to Pm_OpenOutput : " << std::endl;
if (pmNoError != Pm_OpenOutput (&_output_pm_stream,
_pm_output_id,
NULL,
1024,
time_proc,
time_info,
LATENCY)) {
// COMMENTED DBG LOGS */ std::cout << " DONE : " << std::endl;
char* err_msg = new char[256];
Pm_GetHostErrorText(err_msg, 256);
std::cerr << "WavesMidiDevice::open (): Pm_OpenOutput () failed for " << _pm_output_id << "-[" << name () << "]!" << std::endl;
std::cerr << " Port Midi Host Error: " << err_msg << std::endl;
close ();
return -1;
}
// COMMENTED DBG LOGS */ std::cout << " DONE : " << std::endl;
}
}
return 0;
}
void
WavesMidiDevice::close ()
{
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::close (): %1\n", name ()));
WavesMidiEvent *waves_midi_event;
// save _input_pm_stream and _output_pm_stream to local buf
PmStream* input_pm_stream = _input_pm_stream;
PmStream* output_pm_stream = _output_pm_stream;
_input_pm_stream = _output_pm_stream = NULL;
// input
if (input_pm_stream) {
// close stream
PmError err = Pm_Close (input_pm_stream);
if (err != pmNoError) {
char* err_msg = new char[256];
Pm_GetHostErrorText(err_msg, 256);
std::cerr << "WavesMidiDevice::close (): Pm_Close (input_pm_stream) failed (" << err << ") for " << input_pm_stream << "-[" << name () << "]!" << std::endl;
std::cerr << " Port Midi Host Error: " << err_msg << std::endl;
}
_pm_input_id = pmNoDevice;
}
// close queue
if (_input_queue) {
while (1 == Pm_Dequeue (_input_queue, &waves_midi_event)) {
delete waves_midi_event; // XXX possible dup free in ~WavesMidiBuffer() (?)
}
Pm_QueueDestroy (_input_queue);
_input_queue = NULL;
}
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// output
if ( output_pm_stream ) {
// close stream
PmError err = Pm_Close (output_pm_stream);
if (err != pmNoError) {
char* err_msg = new char[256];
Pm_GetHostErrorText(err_msg, 256);
std::cerr << "WavesMidiDevice::close (): Pm_Close (output_pm_stream) failed (" << err << ") for " << output_pm_stream << "-[" << name () << "]!" << std::endl;
std::cerr << " Port Midi Host Error: " << err_msg << std::endl;
}
_pm_output_id = pmNoDevice;
}
// close queue
if (_output_queue) {
while (1 == Pm_Dequeue (_output_queue, &waves_midi_event)) {
delete waves_midi_event; // XXX possible dup free in ~WavesMidiBuffer() (?)
}
Pm_QueueDestroy (_output_queue);
_output_queue = NULL;
}
}
void
WavesMidiDevice::do_io ()
{
read_midi ();
write_midi ();
}
void
WavesMidiDevice::read_midi ()
{
if (NULL == _input_pm_stream) {
return;
}
while (Pm_Poll (_input_pm_stream) > 0) {
PmEvent pm_event; // just one message at a time
int result = Pm_Read (_input_pm_stream, &pm_event, 1);
if (result < 0) {
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("Pm_Read failed for (): [%1]\n", name()));
break;
}
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::_read_midi (): [%1] evt-tm: %2\n", name(), pm_event.timestamp));
if (_incomplete_waves_midi_event == NULL ) {
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::_read_midi (): [%1] new incomplete_waves_midi_event\n", name()));
_incomplete_waves_midi_event = new WavesMidiEvent (pm_event.timestamp);
}
WavesMidiEvent *nested_pm_event = _incomplete_waves_midi_event->append_data (pm_event);
if (nested_pm_event) {
Pm_Enqueue (_input_queue, &nested_pm_event);
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::_read_midi (): [%1] : Pm_Enqueue (_input_queue, nested_pm_event)\n", name()));
}
switch ( _incomplete_waves_midi_event->state ()) {
case WavesMidiEvent::BROKEN:
delete _incomplete_waves_midi_event;
_incomplete_waves_midi_event = NULL;
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::_read_midi (): [%1] : case WavesMidiEvent::BROKEN:\n", name()));
break;
case WavesMidiEvent::COMPLETE:
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::_read_midi (): [%1] : Pm_Enqueue (_input_queue, _incomplete_waves_midi_event); %3\n", name (), _incomplete_waves_midi_event));
if (pmNoError != Pm_Enqueue (_input_queue, &_incomplete_waves_midi_event) ) {
char* err_msg = new char[256];
Pm_GetHostErrorText(err_msg, 256);
std::cerr << "WavesMidiDevice::read_midi (): Pm_Enqueue () failed for [" << name () << "]!" << std::endl;
std::cerr << "Error: " << err_msg << std::endl;
}
_incomplete_waves_midi_event = NULL;
break;
default:
break;
}
}
}
void
WavesMidiDevice::write_midi ()
{
if (NULL == _output_pm_stream) {
return;
}
PmError err;
WavesMidiEvent *waves_midi_event;
while (1 == Pm_Dequeue (_output_queue, &waves_midi_event)) {
if (waves_midi_event->sysex ()) {
// LATENCY compensation
err = Pm_WriteSysEx (_output_pm_stream, waves_midi_event->timestamp () - LATENCY, waves_midi_event->data ());
if (0 > err) {
std::cerr << "WavesMidiDevice::write_event_to_device (): [" << name () << "] Pm_WriteSysEx () failed (" << err << ")!" << std::endl;
};
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::_write_midi (): SYSEX used, ev->tm: %1", waves_midi_event->timestamp () - LATENCY));
}
else
{
err = Pm_WriteShort (_output_pm_stream, waves_midi_event->timestamp () - LATENCY, * (PmMessage*)waves_midi_event->data ());
if (0 > err) {
error << "WavesMidiDevice::write_event_to_device (): [" << name () << "] Pm_WriteShort () failed (" << err << ")!" << endmsg;
}
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::_write_midi (): SHORTMSG used, ev->tm: %1\n", waves_midi_event->timestamp () - LATENCY));
}
}
return;
}
int
WavesMidiDevice::enqueue_output_waves_midi_event (const WavesMidiEvent* waves_midi_event)
{
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ("WavesMidiDevice::enqueue_output_waves_midi_event () [%1]\n", name()));
if (waves_midi_event == NULL) {
error << "WavesMidiDevice::put_event_to_callback (): 'waves_midi_event' is NULL!" << endmsg;
return -1;
}
PmError err = Pm_Enqueue (_output_queue, &waves_midi_event);
if (0 > err) {
error << "WavesMidiDevice::put_event_to_callback (): Pm_Enqueue () failed (" << err << ")!" << endmsg;
return -1;
};
return 0;
}
WavesMidiEvent*
WavesMidiDevice::dequeue_input_waves_midi_event ()
{
WavesMidiEvent* waves_midi_event;
if (Pm_Dequeue (_input_queue, &waves_midi_event) == 1) {
return waves_midi_event;
}
return NULL;
}