769 lines
21 KiB
C
769 lines
21 KiB
C
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/*******************************************************************************/
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/* Copyright (C) 2013 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#include <JACK/Client.H>
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#include <JACK/Port.H>
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#include <OSC/Endpoint.H>
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#include <MIDI/midievent.H>
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#include "debug.h"
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#include <sys/stat.h>
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#include <sys/types.h>
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using namespace MIDI;
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#include <jack/ringbuffer.h>
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#include <jack/thread.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <map>
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#include <string>
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#include <unistd.h> /* usleep */
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/* simple program to translate from MIDI<->OSC Signals using a fixed mapping */
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#include <nsm.h>
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#undef APP_NAME
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const char *APP_NAME = "non-midi-mapper";
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#undef VERSION
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const char *VERSION = "1.0";
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nsm_client_t *nsm;
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char *instance_name;
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OSC::Endpoint *osc = 0;
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/* const double NSM_CHECK_INTERVAL = 0.25f; */
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void
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handle_hello ( lo_message msg )
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{
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int argc = lo_message_get_argc( msg );
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lo_arg **argv = lo_message_get_argv( msg );
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if ( argc >= 4 )
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{
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const char *url = &argv[0]->s;
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const char *name = &argv[1]->s;
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const char *version = &argv[2]->s;
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const char *id = &argv[3]->s;
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MESSAGE( "Discovered NON peer %s (%s) @ %s with ID \"%s\"", name, version, url, id );
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/* register peer */
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osc->handle_hello( id, url );
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}
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}
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void
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check_nsm ( void )
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{
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nsm_check_nowait( nsm );
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// Fl::repeat_timeout( NSM_CHECK_INTERVAL, &check_nsm, v );
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}
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static int
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osc_non_hello ( const char *, const char *, lo_arg **, int , lo_message msg, void * )
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{
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handle_hello( msg );
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return 0;
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}
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static void
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say_hello ( void )
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{
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if ( nsm_is_active( nsm ) )
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{
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lo_message m = lo_message_new();
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lo_message_add( m, "sssss",
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"/non/hello",
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osc->url(),
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APP_NAME,
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VERSION,
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instance_name );
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nsm_send_broadcast( nsm, m );
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}
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}
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class Engine : public JACK::Client
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{
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public:
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jack_ringbuffer_t *input_ring_buf;
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jack_ringbuffer_t *output_ring_buf;
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JACK::Port *midi_input_port;
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JACK::Port *midi_output_port;
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Engine ( )
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{
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input_ring_buf = jack_ringbuffer_create( 16 * 16 * sizeof( jack_midi_event_t ));
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jack_ringbuffer_reset( input_ring_buf );
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output_ring_buf = jack_ringbuffer_create( 16 * 16 * sizeof( jack_midi_event_t ));
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jack_ringbuffer_reset( output_ring_buf );
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midi_input_port = 0;
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midi_output_port = 0;
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}
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int process ( nframes_t nframes )
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{
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/* process input */
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{
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if ( !midi_input_port )
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return 0;
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void *buf = midi_input_port->buffer( nframes );
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jack_midi_event_t ev;
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jack_nframes_t count = jack_midi_get_event_count( buf );
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/* place MIDI events into ringbuffer for non-RT thread */
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for ( uint i = 0; i < count; ++i )
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{
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// MESSAGE( "Got midi input!" );
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jack_midi_event_get( &ev, buf, i );
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/* /\* time is frame within cycle, convert to absolute tick *\/ */
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/* e.timestamp( ph + (ev.time / transport.frames_per_tick) ); */
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/* e.status( ev.buffer[0] ); */
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/* e.lsb( ev.buffer[1] ); */
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/* if ( ev.size == 3 ) */
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/* e.msb( ev.buffer[2] ); */
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if ( jack_ringbuffer_write( input_ring_buf, (char*)&ev, sizeof( jack_midi_event_t ) ) != sizeof( jack_midi_event_t ) )
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WARNING( "input buffer overrun" );
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}
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}
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/* process output */
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{
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void *buf = midi_output_port->buffer(nframes);
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jack_midi_clear_buffer( buf );
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jack_midi_event_t ev;
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nframes_t frame = 0;
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while ( true )
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{
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/* jack_ringbuffer_data_t vec[2]; */
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/* jack_ringbuffer_get_read_vector( output_ring_buf, vec ); */
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if ( jack_ringbuffer_peek( output_ring_buf, (char*)&ev, sizeof( jack_midi_event_t )) <= 0 )
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break;
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unsigned char *buffer = jack_midi_event_reserve( buf, frame, ev.size );
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if ( !buffer )
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{
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WARNING("Output buffer overrun, will send later" );
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break;
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}
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memcpy( buffer, &ev, ev.size );
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jack_ringbuffer_read_advance( output_ring_buf, sizeof( jack_midi_event_t ) );
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}
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}
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return 0;
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}
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void freewheel ( bool starting )
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{
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}
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int xrun ( void )
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{
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return 0;
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}
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int buffer_size ( nframes_t nframes )
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{
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return 0;
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}
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void shutdown ( void )
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{
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}
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void thread_init ( void )
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{
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}
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};
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Engine *engine;
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const float MAX_NRPN = 16383.0f;
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static char
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get_lsb( int i )
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{
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return i & 0x7F;
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}
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static char
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get_msb( int i )
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{
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return ( i >> 7 ) & 0x7F;
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}
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static int
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get_14bit ( char msb, char lsb )
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{
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return msb * 128 + lsb;
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}
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class signal_mapping
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{
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public:
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bool is_nrpn;
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// int nrpn;
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midievent event;
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std::string signal_name;
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OSC::Signal *signal;
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signal_mapping ( )
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{
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is_nrpn = false;
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signal = NULL;
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}
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~signal_mapping ( )
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{
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if ( signal )
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delete signal;
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signal = NULL;
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}
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char *serialize ( void ) const
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{
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char *s;
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const char *opcode = 0;
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int v1 = 0;
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if ( is_nrpn )
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{
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opcode = "NRPN";
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v1 = get_14bit( event.msb(), event.lsb() );
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}
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else
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switch ( event.opcode() )
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{
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case MIDI::midievent::CONTROL_CHANGE:
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opcode = "CC";
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v1 = event.lsb();
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break;
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case MIDI::midievent::NOTE_ON:
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opcode = "NOTE_ON";
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v1 = event.note();
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break;
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default:
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// unsupported
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break;
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}
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asprintf( &s, "%s %d %d", opcode, event.channel(), v1 );
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return s;
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}
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void deserialize ( const char *s )
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{
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int channel;
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char *opcode;
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int control;
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if ( 3 == sscanf( s, "%as %d %d", &opcode, &channel, &control ) )
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{
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event.channel( channel );
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event.opcode( MIDI::midievent::CONTROL_CHANGE );
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is_nrpn = 0;
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if ( !strcmp( opcode, "NRPN" ) )
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{
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is_nrpn = 1;
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event.lsb( get_lsb( control ));
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event.msb( get_msb( control ));
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}
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else if ( !strcmp( opcode, "CC" ) )
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{
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event.lsb( control );
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}
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free(opcode);
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}
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}
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};
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int signal_handler ( float value, void *user_data )
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{
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signal_mapping *m = (signal_mapping*)user_data;
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if ( m->is_nrpn )
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{
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jack_midi_event_t jev[4];
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{
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midievent e;
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e.opcode( MIDI::midievent::CONTROL_CHANGE );
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e.channel( m->event.channel() );
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e.lsb( 99 );
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e.msb( m->event.msb() );
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jev[0].size = e.size();
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e.raw( (byte_t*)&jev[0], e.size() );
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// e.pretty_print();
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}
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{
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midievent e;
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e.opcode( MIDI::midievent::CONTROL_CHANGE );
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e.channel( m->event.channel() );
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e.lsb( 98 );
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e.msb( m->event.lsb() );
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jev[1].size = e.size();
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e.raw( (byte_t*)&jev[1], e.size() );
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// e.pretty_print();
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}
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{
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midievent e;
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e.opcode( MIDI::midievent::CONTROL_CHANGE );
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e.channel( m->event.channel() );
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e.lsb( 6 );
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e.msb( int(value * MAX_NRPN ) >> 7 );
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jev[2].size = e.size();
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e.raw( (byte_t*)&jev[2], e.size() );
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// e.pretty_print();
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}
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{
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midievent e;
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e.opcode( MIDI::midievent::CONTROL_CHANGE );
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e.channel( m->event.channel() );
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e.lsb( 38 );
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e.msb( int( value * MAX_NRPN ) & 0x7F );
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jev[3].size = e.size();
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e.raw( (byte_t*)&jev[3], e.size() );
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// e.pretty_print();
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}
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for ( int i = 0; i < 4; i++ )
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{
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if ( jack_ringbuffer_write( engine->output_ring_buf, (char*)&jev[i],
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sizeof( jack_midi_event_t ) ) != sizeof( jack_midi_event_t ) )
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WARNING( "output buffer overrun" );
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}
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}
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else
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{
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jack_midi_event_t ev;
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m->event.msb( value * 128.0f );
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ev.size = m->event.size();
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m->event.raw( (byte_t*)&ev, m->event.size() );
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// m->event.pretty_print();
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if ( jack_ringbuffer_write( engine->output_ring_buf, (char*)&ev, sizeof( jack_midi_event_t ) ) != sizeof( jack_midi_event_t ) )
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WARNING( "output buffer overrun" );
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}
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return 0;
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}
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std::map<std::string,signal_mapping> sig_map;
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bool
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save_settings ( void )
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{
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FILE *fp = fopen( "signals", "w" );
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if ( !fp )
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return false;
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for ( std::map<std::string,signal_mapping>::const_iterator i = sig_map.begin();
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i != sig_map.end();
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i++ )
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{
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fprintf( fp, "[%s] %s\n", i->first.c_str(), i->second.signal_name.c_str() );
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}
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fclose(fp);
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return true;
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}
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bool
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load_settings ( void )
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{
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FILE *fp = fopen( "signals", "r" );
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if ( !fp )
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return false;
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sig_map.clear();
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char *signal_name;
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char *midi_event;
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while ( 2 == fscanf( fp, "[%a[^]]] %a[^\n]\n", &midi_event, &signal_name ) )
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{
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DMESSAGE( "%s, %s", midi_event, signal_name );
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if ( sig_map.find( midi_event ) == sig_map.end() )
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{
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signal_mapping m;
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m.deserialize( midi_event );
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sig_map[midi_event] = m;
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sig_map[midi_event].signal_name = signal_name;
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sig_map[midi_event].signal = osc->add_signal( signal_name, OSC::Signal::Output, 0, 1, 0, signal_handler, &sig_map[midi_event] );
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}
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free(signal_name);
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free(midi_event);
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/* if ( sig_map.find( s ) == sig_map.end() ) */
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/* { */
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/* int channel, control; */
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/* if ( 2 == sscanf( s, "/midi/%d/CC/%d", &channel, &control ) ) */
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/* { */
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/* signal_mapping m; */
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/* m.event.channel( channel ); */
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/* m.event.opcode( MIDI::midievent::CONTROL_CHANGE ); */
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/* m.event.lsb( control ); */
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/* MESSAGE( "creating signal %s", s ); */
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/* sig_map[s] = m; */
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/* sig_map[s].signal = osc->add_signal( s, OSC::Signal::Output, 0, 1, 0, signal_handler, &sig_map[s] ); */
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/* } */
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/* if ( 2 == sscanf( s, "/midi/%d/NRPN/%d", &channel, &control ) ) */
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/* { */
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/* signal_mapping m; */
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/* m.event.channel( channel ); */
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/* m.event.opcode( MIDI::midievent::CONTROL_CHANGE ); */
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/* m.event.lsb( get_lsb( control ) ); */
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/* m.event.msb( get_msb( control ) ); */
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/* m.is_nrpn = true; */
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/* MESSAGE( "creating signal %s", s ); */
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/* sig_map[s] = m; */
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/* sig_map[s].signal = osc->add_signal( s, OSC::Signal::Output, 0, 1, 0, signal_handler, &sig_map[s] ); */
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/* } */
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/* else */
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/* WARNING( "Could not decode signal spec \"%s\"", s ); */
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/* } */
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/* free(s); */
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}
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return true;
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}
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static int
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command_open ( const char *name, const char *display_name, const char *client_id, char **out_msg, void *userdata )
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{
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if ( instance_name )
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free( instance_name );
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instance_name = strdup( client_id );
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osc->name( client_id );
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mkdir( name, 0777 );
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chdir( name );
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load_settings();
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say_hello();
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return ERR_OK;
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}
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static int
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command_save ( char **out_msg, void *userdata )
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{
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if ( save_settings() )
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{
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nsm_send_is_clean(nsm);
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return ERR_OK;
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}
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else
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return ERR_GENERAL;
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}
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|
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static int
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command_broadcast ( const char *path, lo_message msg, void *userdata )
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{
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lo_message_get_argc( msg );
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// lo_arg **argv = lo_message_get_argv( msg );
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if ( !strcmp( path, "/non/hello" ) )
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{
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handle_hello( msg );
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return 0;
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}
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else
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return -1;
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}
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|
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struct nrpn_state
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{
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char control_msb;
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char control_lsb;
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char value_msb;
|
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char value_lsb;
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bool decending;
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};
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|
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static
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struct nrpn_state *
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decode_nrpn ( nrpn_state *state, midievent e, int *take_action )
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{
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nrpn_state *n = &state[e.channel()];
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|
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*take_action = 0;
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|
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switch ( e.lsb() )
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{
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case 6:
|
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if ( e.msb() < n->value_msb )
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n->value_lsb = 127;
|
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else if ( e.msb() > n->value_msb )
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n->value_lsb = 0;
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|
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n->value_msb = e.msb();
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*take_action = 1;
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|
return n;
|
|
case 38:
|
|
n->value_lsb = e.msb();
|
|
*take_action = 1;
|
|
return n;
|
|
case 99:
|
|
n->control_msb = e.msb();
|
|
n->control_lsb = 0;
|
|
return n;
|
|
case 98:
|
|
n->control_lsb = e.msb();
|
|
return n;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
main ( int argc, char **argv )
|
|
{
|
|
nrpn_state nrpn_state[16];
|
|
|
|
nsm = nsm_new();
|
|
// set_nsm_callbacks( nsm );
|
|
|
|
nsm_set_open_callback( nsm, command_open, 0 );
|
|
nsm_set_broadcast_callback( nsm, command_broadcast, 0 );
|
|
nsm_set_save_callback( nsm, command_save, 0 );
|
|
|
|
char *nsm_url = getenv( "NSM_URL" );
|
|
|
|
if ( nsm_url )
|
|
{
|
|
if ( ! nsm_init( nsm, nsm_url ) )
|
|
{
|
|
nsm_send_announce( nsm, APP_NAME, ":dirty:", argv[0] );
|
|
|
|
/* poll so we can keep OSC handlers running in the GUI thread and avoid extra sync */
|
|
// Fl::add_timeout( NSM_CHECK_INTERVAL, check_nsm, NULL );
|
|
}
|
|
}
|
|
|
|
engine = new Engine();
|
|
|
|
DMESSAGE( "Creating JACK engine" );
|
|
|
|
if ( ! engine->init("midi-to-osc" ) )
|
|
{
|
|
WARNING( "Failed to create JACK client" );
|
|
}
|
|
|
|
engine->midi_input_port = new JACK::Port( engine, "midi-in", JACK::Port::Input, JACK::Port::MIDI );
|
|
engine->midi_output_port = new JACK::Port( engine, "midi-out", JACK::Port::Output, JACK::Port::MIDI );
|
|
|
|
if ( !engine->midi_input_port->activate() )
|
|
{
|
|
WARNING( "Failed to activate JACK port" );
|
|
}
|
|
|
|
if ( !engine->midi_output_port->activate() )
|
|
{
|
|
WARNING( "Failed to activate JACK port" );
|
|
}
|
|
|
|
|
|
WARNING( "Can fit %i events in a period", ( engine->nframes() * 4 ) / 3 );
|
|
|
|
osc = new OSC::Endpoint();
|
|
|
|
osc->init( LO_UDP, NULL );
|
|
|
|
osc->add_method( "/non/hello", "ssss", osc_non_hello, osc, "" );
|
|
|
|
MESSAGE( "OSC URL = %s", osc->url() );
|
|
|
|
/* now we just read from the MIDI ringbuffer and output OSC */
|
|
|
|
DMESSAGE( "waiting for events" );
|
|
|
|
static int max_signal = 1;
|
|
|
|
jack_midi_event_t ev;
|
|
midievent e;
|
|
while ( true )
|
|
{
|
|
while ( jack_ringbuffer_read( engine->input_ring_buf, (char *)&ev, sizeof( jack_midi_event_t ) ) )
|
|
{
|
|
e.timestamp( ev.time );
|
|
e.status( ev.buffer[0] );
|
|
e.lsb( ev.buffer[1] );
|
|
if ( ev.size == 3 )
|
|
e.msb( ev.buffer[2] );
|
|
|
|
switch ( e.opcode() )
|
|
{
|
|
case MIDI::midievent::CONTROL_CHANGE:
|
|
case MIDI::midievent::PITCH_WHEEL:
|
|
{
|
|
int is_nrpn = 0;
|
|
|
|
struct nrpn_state *st = decode_nrpn( nrpn_state, e, &is_nrpn );
|
|
|
|
if ( st != NULL && !is_nrpn )
|
|
continue;
|
|
|
|
char *midi_event;
|
|
|
|
if ( is_nrpn )
|
|
{
|
|
asprintf( &midi_event, "NRPN %d %d", e.channel(), st->control_msb * 128 + st->control_lsb );
|
|
}
|
|
else if ( e.opcode() == MIDI::midievent::CONTROL_CHANGE )
|
|
asprintf( &midi_event, "CC %d %d", e.channel(), e.lsb() );
|
|
/* else if ( e.opcode() == MIDI::midievent::PITCH_WHEEL ) */
|
|
/* asprintf( &s, "/midi/%i/PB", e.channel() ); */
|
|
else
|
|
break;
|
|
|
|
if ( sig_map.find( midi_event ) == sig_map.end() )
|
|
{
|
|
char *s;
|
|
|
|
asprintf( &s, "/control/%i", max_signal++ );
|
|
|
|
signal_mapping m;
|
|
|
|
m.event.opcode( e.opcode() );
|
|
m.event.channel( e.channel() );
|
|
|
|
m.event.lsb( e.lsb() );
|
|
m.event.msb( e.msb() );
|
|
|
|
m.is_nrpn = is_nrpn;
|
|
|
|
if ( is_nrpn )
|
|
{
|
|
m.event.lsb( st->control_lsb );
|
|
m.event.msb( st->control_msb );
|
|
}
|
|
|
|
/* if ( is_nrpn ) */
|
|
/* m.nrpn = nrpnc_msb * 127 + nrpnc_lsb; */
|
|
|
|
MESSAGE( "creating signal %s", s );
|
|
sig_map[midi_event] = m;
|
|
sig_map[midi_event].signal_name = s;
|
|
sig_map[midi_event].signal = osc->add_signal( s, OSC::Signal::Output, 0, 1, 0, signal_handler, &sig_map[midi_event] );
|
|
|
|
nsm_send_is_dirty( nsm );
|
|
|
|
free(s);
|
|
}
|
|
|
|
float val = 0;
|
|
|
|
if ( is_nrpn )
|
|
{
|
|
val = ( st->value_msb * 128 + st->value_lsb ) / ( MAX_NRPN );
|
|
}
|
|
else if ( e.opcode() == MIDI::midievent::CONTROL_CHANGE )
|
|
val = e.msb() / 128.0f;
|
|
else if ( e.opcode() == MIDI::midievent::PITCH_WHEEL )
|
|
val = e.pitch() / ( MAX_NRPN );
|
|
|
|
// MESSAGE( "sending signal for %s = %f", s, val );
|
|
|
|
sig_map[midi_event].signal->value( val );
|
|
|
|
free( midi_event );
|
|
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
// e.pretty_print();
|
|
}
|
|
osc->wait(20);
|
|
check_nsm();
|
|
|
|
// usleep( 500 );
|
|
}
|
|
}
|