non/nonlib/OSC/Endpoint.C

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/*******************************************************************************/
/* Copyright (C) 2010 Jonathan Moore Liles */
/* */
/* 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; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#include <lo/lo.h>
#include "debug.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "Endpoint.H"
#include "Thread.H"
namespace OSC
{
/**********/
/* Method */
/**********/
Method::Method ( )
{
_path = _typespec = _documentation = 0;
}
Method::~Method ( )
{
if ( _path )
free( _path );
if ( _typespec )
free( _typespec );
}
/**********/
/* Signal */
/**********/
int Signal::next_id = 0;
void
Signal::value ( float f )
{
for ( std::list<Target*>::const_iterator i = _outgoing.begin();
i != _outgoing.end();
++i )
{
// DMESSAGE( "Sending signal value %i %f", (*i)->signal_id, f );
if ( (*i)->value != f )
{
(*i)->value = f;
_endpoint->send( (*i)->peer->addr,
"/signal/change",
(*i)->signal_id,
f );
}
}
}
void
Endpoint::error_handler(int num, const char *msg, const char *path)
{
WARNING( "LibLO server error %d in path %s: %s\n", num, path, msg);
}
Endpoint::Endpoint ( )
{
}
int
Endpoint::init ( int proto, const char *port )
{
DMESSAGE( "Creating OSC server" );
_server = lo_server_new_with_proto( port, proto, error_handler );
if ( ! _server )
{
WARNING( "Error creating OSC server" );
return -1;
}
add_method( "/signal/change", "if", &Endpoint::osc_sig_handler, this, "" );
add_method( NULL, "", &Endpoint::osc_generic, this, "" );
add_method( NULL, NULL, &Endpoint::osc_signal_lister, this, "" );
add_method( "/reply", NULL, &Endpoint::osc_reply, this, "" );
return 0;
}
Endpoint::~Endpoint ( )
{
// lo_server_thread_free( _st );
lo_server_free( _server );
}
OSC::Target *
Endpoint::find_target_by_peer_address ( std::list<Target*> *l, lo_address addr )
{
for ( std::list<Target*>::iterator i = l->begin();
i != l->end();
++i )
{
if ( address_matches( addr, (*i)->peer->addr ) )
{
return *i;
}
}
return NULL;
}
OSC::Signal *
Endpoint::find_signal_by_id ( int id )
{
for ( std::list<Signal*>::iterator i = _signals.begin();
i != _signals.end();
++i )
{
if ( (*i)->id() == id )
return *i;
}
}
int
Endpoint::osc_sig_handler ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
{
Signal *o;
float f = 0.0;
if ( !strcmp( path, "/signal/change" ) && !strcmp( types, "if" ) )
{
/* accept a value for numbered signal */
int id = argv[0]->i;
f = argv[1]->f;
o = ((Endpoint*)user_data)->find_signal_by_id( id );
if ( ! o )
{
WARNING( "Unknown signal id %i", id );
return 0;
}
}
else if ( ! strcmp( types, "f" ) )
{
/* accept a value for signal named in path */
o = (Signal*)user_data;
f = argv[0]->f;
}
else if ( ! types || 0 == types[0] )
{
/* reply with current value */
o = (Signal*)user_data;
o->_endpoint->send( lo_message_get_source( msg ), "/reply", path, o->value() );
}
else
{
return -1;
}
Target *t = NULL;
if ( 0 == o->_incoming.size() ||
! ( t = find_target_by_peer_address( &o->_incoming, lo_message_get_source( msg ) ) ) )
{
/* message came from an unconnected peer, just set the value exactly */
}
else
{
/* message is from a connected source, do mixing. */
t->value = f;
f = 0.0;
for ( std::list<Target*>::const_iterator i = o->_incoming.begin();
i != o->_incoming.end();
++i )
{
f += (*i)->value;
}
}
o->_value = f;
o->_handler( f, o->_user_data );
return 0;
}
int
Endpoint::osc_generic ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
{
// OSC_DMSG();
if ( path[ strlen(path) - 1 ] != '/' )
return -1;
Endpoint *ep = (Endpoint*)user_data;
for ( std::list<Method*>::const_iterator i = ep->_methods.begin(); i != ep->_methods.end(); ++i )
{
if ( ! (*i)->path() )
continue;
if (! strncmp( (*i)->path(), path, strlen(path) ) )
{
/* asprintf( &stored_path, "%s (%s); %s", path, typespec, argument_description ); */
((Endpoint*)user_data)->send( lo_message_get_source( msg ), "/reply", path, (*i)->path() );
}
}
((Endpoint*)user_data)->send( lo_message_get_source( msg ), "/reply", path );
return 0;
}
int
Endpoint::osc_signal_lister ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
{
// OSC_DMSG();
Signal::Direction dir;
if ( ! strcmp( path, "/signal/list_inputs" ) )
{
dir = Signal::Input;
}
else if ( ! strcmp( path, "/signal/list_outputs" ) )
{
dir = Signal::Output;
}
else
return -1;
const char *prefix = NULL;
if ( argc )
prefix = &argv[0]->s;
Endpoint *ep = (Endpoint*)user_data;
for ( std::list<Signal*>::const_iterator i = ep->_signals.begin(); i != ep->_signals.end(); ++i )
{
Signal *o = *i;
if ( dir == Signal::Bidirectional ||
dir == o->_direction )
{
if ( ! prefix || ! strncmp( o->path(), prefix, strlen(prefix) ) )
{
ep->send( lo_message_get_source( msg ),
"/reply",
path,
o->path(),
o->id(),
o->parameter_limits().min,
o->parameter_limits().max,
o->parameter_limits().default_value
);
}
}
}
ep->send( lo_message_get_source( msg ), "/reply", path );
return 0;
}
bool
Endpoint::address_matches ( lo_address addr1, lo_address addr2 )
{
char *purl = strdup( lo_address_get_port( addr1 ) );
char *url = strdup( lo_address_get_port( addr2 ) );
bool r = !strcmp( purl, url );
free( purl );
free( url );
return r;
}
void
Endpoint::list_peers ( void (*callback) (const char *, const char *, int, void * ), void *v )
{
for ( std::list<Peer*>::iterator i = _peers.begin();
i != _peers.end();
++i )
{
for ( std::list<Signal*>::iterator j = (*i)->_signals.begin();
j != (*i)->_signals.end();
++j )
{
// DMESSAGE( "Running callback" );
callback( (*i)->name, (*j)->path(), (*j)->id(), v );
}
}
}
Peer *
Endpoint::find_peer_by_address ( lo_address addr )
{
char *url = strdup( lo_address_get_port( addr ) );
Peer *p = NULL;
for ( std::list<Peer*>::iterator i = _peers.begin();
i != _peers.end();
++i )
{
char *purl = strdup( lo_address_get_port( (*i)->addr ) );
if ( !strcmp( purl, url ) )
{
free( purl );
p = *i;
break;
}
free(purl);
}
free( url );
return p;
}
Peer *
Endpoint::find_peer_by_name ( const char *name )
{
for ( std::list<Peer*>::iterator i = _peers.begin();
i != _peers.end();
++i )
{
if ( !strcmp( name, (*i)->name ) )
{
return *i;
}
}
return NULL;
}
/* First part of 'to' is a peer name */
bool
Endpoint::connect_signal( OSC::Signal *s, const char *peer_name, int signal_id )
{
if ( s->_direction == Signal::Output )
{
Peer *p = find_peer_by_name( peer_name );
MESSAGE( "Connecting signal output \"%s\" to %s:%i", s->path(), peer_name, signal_id );
if ( p )
{
Target *t = new Target();
t->peer = p;
t->signal_id = signal_id;
s->_outgoing.push_back( t );
send( p->addr, "/signal/connect",
0, /* FIXME: our signal id */
0 /* FIXME: their signal id */ );
return true;
}
}
return false;
}
int
Endpoint::osc_reply ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
{
Endpoint *ep = (Endpoint*)user_data;
if ( argc && !strcmp( &argv[0]->s, "/signal/list_inputs" ) )
{
Peer *p = ep->find_peer_by_address( lo_message_get_source( msg ) );
if ( ! p )
{
WARNING( "Got input list reply from unknown peer." );
return 0;
}
if ( argc == 1 )
{
p->_scanning = false;
DMESSAGE( "Done scanning %s", p->name );
}
else if ( p->_scanning )
{
DMESSAGE( "Peer %s has signal %s", p->name, &argv[1]->s );
Signal *s = new Signal( &argv[1]->s, Signal::Input );
s->_id = argv[2]->i;
s->parameter_limits().min = argv[3]->f;
s->parameter_limits().max = argv[4]->f;
s->parameter_limits().default_value = argv[4]->f;
p->_signals.push_back( s );
}
return 0;
}
else
return -1;
}
Method *
Endpoint::add_method ( const char *path, const char *typespec, lo_method_handler handler, void *user_data, const char *argument_description )
{
// DMESSAGE( "Added OSC method %s (%s)", path, typespec );
lo_server_add_method( _server, path, typespec, handler, user_data );
Method *md = new Method;
if ( path )
md->_path = strdup( path );
if ( typespec )
md->_typespec = strdup( typespec );
if ( argument_description )
md->_documentation = strdup( argument_description );
if ( typespec )
md->_parameter_limits = new Parameter_Limits[strlen(typespec)];
_methods.push_back( md );
return md;
}
Signal *
Endpoint::add_signal ( const char *path, Signal::Direction dir, signal_handler handler, void *user_data )
{
Signal *md = new Signal( path, dir );
if ( path )
md->_path = strdup( path );
md->_handler = handler;
md->_user_data = user_data;
md->_endpoint = this;
_signals.push_back( md );
if ( dir == Signal::Input )
{
lo_server_add_method( _server, path, NULL, osc_sig_handler, md );
}
return md;
}
void
Endpoint::del_method ( const char *path, const char *typespec )
{
// DMESSAGE( "Deleted OSC method %s (%s)", path, typespec );
lo_server_del_method( _server, path, typespec );
for ( std::list<Method *>::iterator i = _methods.begin(); i != _methods.end(); ++i )
{
if ( ! (*i)->path() )
continue;
if ( ! strcmp( path, (*i)->path() ) &&
! strcmp( typespec, (*i)->typespec() ) )
{
delete *i;
i = _methods.erase( i );
break;
}
}
}
void
Endpoint::del_method ( Method *meth )
{
// DMESSAGE( "Deleted OSC method %s (%s)", path, typespec );
lo_server_del_method( _server, meth->path(), meth->typespec() );
delete meth;
_methods.remove( meth );
}
void
Endpoint::del_signal ( Signal *o )
{
// DMESSAGE( "Deleted OSC method %s (%s)", path, typespec );
lo_server_del_method( _server, o->path(), "f" );
delete o;
_signals.remove( o );
}
void
Endpoint::scan_peer ( const char *name, const char *url )
{
Peer *p = new Peer;
p->name = strdup( name );
p->addr = lo_address_new_from_url( url );
p->_scanning = true;
_peers.push_back( p );
send( p->addr, "/signal/list_inputs" );
}
void *
Endpoint::osc_thread ( void * arg )
{
((Endpoint*)arg)->osc_thread();
return NULL;
}
void
Endpoint::osc_thread ( void )
{
_thread.name( "OSC" );
DMESSAGE( "OSC Thread running" );
run();
}
void
Endpoint::start ( void )
{
if ( !_thread.clone( &Endpoint::osc_thread, this ) )
FATAL( "Could not create OSC thread" );
/* lo_server_thread_start( _st ); */
}
void
Endpoint::stop ( void )
{
_thread.join();
// lo_server_thread_stop( _st );
}
int
Endpoint::port ( void ) const
{
return lo_server_get_port( _server );
}
char *
Endpoint::url ( void ) const
{
return lo_server_get_url( _server );
}
/** Process any waiting events and return immediately */
void
Endpoint::check ( void ) const
{
wait( 0 );
}
/** Process any waiting events and return after timeout */
void
Endpoint::wait ( int timeout ) const
{
if ( lo_server_wait( _server, timeout ) )
while ( lo_server_recv_noblock( _server, 0 ) ) { }
}
/** Process events forever */
void
Endpoint::run ( void ) const
{
for ( ;; )
{
lo_server_recv( _server );
}
}
int
Endpoint::send ( lo_address to, const char *path, std::list< OSC_Value > values )
{
lo_message m = lo_message_new();
for ( std::list< OSC_Value >::const_iterator i = values.begin();
i != values.end();
++i )
{
const OSC_Value *ov = &(*i);
switch ( ov->type() )
{
case 'f':
DMESSAGE( "Adding float %f", ((OSC_Float*)ov)->value() );
lo_message_add_float( m, ((OSC_Float*)ov)->value() );
break;
case 'i':
DMESSAGE( "Adding int %i", ((OSC_Int*)ov)->value() );
lo_message_add_int32( m, ((OSC_Int*)ov)->value() );
break;
case 's':
DMESSAGE( "Adding string %s", ((OSC_String*)ov)->value() );
lo_message_add_string( m, ((OSC_String*)ov)->value() );
break;
default:
FATAL( "Unknown format: %c", ov->type() );
break;
}
}
DMESSAGE( "Path: %s", path );
lo_bundle b = lo_bundle_new( LO_TT_IMMEDIATE );
lo_bundle_add_message(b, path, m );
int r = lo_send_bundle_from( to, _server, b );
// int r = lo_send_message_from( to, _server, path, m );
// lo_message_free( m );
return r;
}
int
Endpoint::send ( lo_address to, const char *path )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "" );
}
int
Endpoint::send ( lo_address to, const char *path, int v )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "i", v );
}
int
Endpoint::send ( lo_address to, const char *path, float v )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "f", v );
}
int
Endpoint::send ( lo_address to, const char *path, double v )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "d", v );
}
int
Endpoint::send ( lo_address to, const char *path, const char * v )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "s", v );
}
int
Endpoint::send ( lo_address to, const char *path, const char * v1, float v2 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "sf", v1, v2 );
}
int
Endpoint::send ( lo_address to, const char *path, const char * v1, const char *v2 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "ss", v1, v2 );
}
int
Endpoint::send ( lo_address to, const char *path, const char * v1, const char *v2, const char *v3 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "sss", v1, v2, v3 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, int v2, int v3, int v4 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "siii", v1, v2, v3, v4 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, const char *v2, int v3, int v4, int v5 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "ssiii", v1, v2, v3, v4, v5 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, const char *v2, const char *v3, int v4, int v5, int v6 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "sssiii", v1, v2, v3, v4, v5, v6 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, int v2 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "si", v1, v2 );
}
int
Endpoint::send ( lo_address to, const char *path, int v1, const char *v2 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "is", v1, v2 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, int v2, const char *v3 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "sis", v1, v2, v3 );
}
int
Endpoint::send ( lo_address to, const char *path, int v1, const char *v2, const char *v3, const char *v4 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "isss", v1, v2, v3, v4 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, int v2, const char *v3, const char *v4, const char *v5 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "sisss", v1, v2, v3, v4, v5 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, const char *v2, const char *v3, const char *v4, const char *v5 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "sssss", v1, v2, v3, v4, v5 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, const char *v2, const char *v3, const char *v4 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "ssss", v1, v2, v3, v4 );
}
int
Endpoint::send ( lo_address to, const char *path, lo_message msg )
{
return lo_send_message_from( to, _server, path, msg );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, const char *v2, int v3, float v4, float v5, float v6 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "ssifff", v1, v2, v3, v4, v5, v6 );
}
int
Endpoint::send ( lo_address to, const char *path, const char *v1, int v2, int v3 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "sii", v1, v2, v3 );
}
int
Endpoint::send ( lo_address to, const char *path, int v1, int v2 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "ii", v1, v2 );
}
int
Endpoint::send ( lo_address to, const char *path, int v1, float v2 )
{
return lo_send_from( to, _server, LO_TT_IMMEDIATE, path, "if", v1, v2 );
}
}