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Work on server aspect of Engine.

pull/3/head
Jonathan Moore Liles 2008-03-25 02:08:13 -05:00
parent b64034fdf0
commit 93ce31ea03
8 changed files with 452 additions and 0 deletions
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30
Engine/Makefile Normal file
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@ -0,0 +1,30 @@
SRCS= \
Server.C \
Timeline_Server.C \
main.C \
Audio_File.C \
Audio_File_SF.C \
Peaks.C \
Loggable.C \
OBJS=$(SRCS:.C=.o)
.PHONEY: all clean install dist valgrind
all: engine
$(OBJS): Makefile
include ../make.inc
engine: $(OBJS)
$(CXX) $(CXXFLAGS) $(INCLUDES) $(LIBS) $(OBJS) -o $@
clean:
rm -f $(OBJS) engine makedepend
valgrind:
valgrind ./test
include makedepend

32
Engine/Peak_Server.C Normal file
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/*******************************************************************************/
/* Copyright (C) 2008 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. */
/*******************************************************************************/
/* Peak Server
The peak server streams peak data to any timeline editors or other clients that ask for it.
Peak request looks like:
> read_peaks "foo.wav" fpp start end
Response looks like (in binary floats):
> length min max min max min max
*/

177
Engine/Server.C Normal file
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/*******************************************************************************/
/* Copyright (C) 2008 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 "Server.H"
#include <netdb.h>
#include <netinet/in.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/select.h>
/* Generic TCP server class */
#define MAX_HOST_NAME 512
/** open a socket listening on TCP port /port/. Returns -1 in case of error. */
int
Server::listen_on_port ( int port )
{
int s;
char name[ MAX_HOST_NAME + 1 ];
struct sockaddr_in sa;
struct hostent *hp;
memset( &sa, 0, sizeof( sa ) );
gethostname( name, MAX_HOST_NAME );
hp = gethostbyname( name );
sa.sin_family = hp->h_addrtype;
sa.sin_port = htons( port );
sa.sin_addr.s_addr = INADDR_ANY;
if ( ( s = socket( AF_INET, SOCK_STREAM, 0 ) ) < 0 )
{
printf( "Could not create command socket!" );
return -1;
}
int yes = 1;
if ( setsockopt( s, SOL_SOCKET, SO_REUSEADDR, (char * )&yes, sizeof( int ) ) < 0 )
{
close( s );
return -1;
}
if ( bind( s, (struct sockaddr *)&sa, sizeof( sa ) ) < 0 )
{
printf( "bind: %s", strerror( errno ) );
close( s );
return -1;
}
listen( s, 1 );
return s;
}
Server::Server ( int port )
{
_port = port;
}
void
Server::run ( void )
{
int server; /* server socket */
if ( ( server = listen_on_port( _port ) ) < 0 )
/* error */;
fd_set master;
fd_set read_fds;
int maxfd;
FD_ZERO( &master );
FD_ZERO( &read_fds );
FD_SET( server, &master );
maxfd = server;
for ( ;; )
{
read_fds = master;
if ( select( maxfd + 1, &read_fds, NULL, NULL, NULL ) == -1 )
{
perror( "select()" );
/* error */
}
/* service connections */
/* FIXME: there's a better way to do this than cover *all* fds. */
for ( int i = 2; i < maxfd + 1; ++i )
{
if ( FD_ISSET( i, &read_fds ) )
{
if ( i == server )
{
struct sockaddr_in ca;
socklen_t al = sizeof( ca );
int c;
if ( ( c = accept( server, (struct sockaddr *)&ca, &al ) ) < 0 )
perror( "accept()" );
FD_SET( c, &master );
if ( c > maxfd )
maxfd = c;
handle_new( c );
// printf( "New connection from %s on socket %d\n", inet_ntoa( ca.sin_addr ), c );
}
else
{
char buf[ BUFSIZ ];
int l;
if ( ( l = recv( i, buf, sizeof( buf ), 0 ) ) <= 0 )
{
if ( l == 0 )
{
handle_hang_up( i );
}
else
perror( "recv()" );
close( i );
FD_CLR( i, &master );
}
else
{
/* echo to others */
for ( int j = maxfd; j-- ; )
{
if ( ! FD_ISSET( j, &master ) )
continue;
if ( j != server && j != i )
{
if ( send( j, buf, l, 0 ) < 0 )
perror( "send()" );
}
}
buf[ l ] = '\0';
handle_request( buf, l );
}
}
}
}
}
}

37
Engine/Server.H Normal file
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/*******************************************************************************/
/* Copyright (C) 2008 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. */
/*******************************************************************************/
class Server
{
int _port;
static int listen_on_port ( int port );
public:
Server ( int port );
void run ( void );
protected:
virtual void handle_hang_up ( int s ) = 0;
virtual void handle_new ( int s ) = 0;
virtual void handle_request ( const char *s, int l ) = 0;
};

71
Engine/Timeline_Server.C Normal file
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/*******************************************************************************/
/* Copyright (C) 2008 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 "objects.H"
/* #include <sys/socket.h> */
/* #include <sys/types.h> */
/* #include <sys/select.h> */
#include "Timeline_Server.H"
#include <stdio.h>
/* Timeline Server.
The timeline server runs in its own thread and manages communication
between the engine and any connected timeline editors.
Its duties are as follows:
* Listen for connections from Timeline Editors on a TCP port.
* Accept 'do' messages from each connection, echoing the change to
all others.
* Keep global engine state in sync with recieved messages (in a
lock-free manner)
* Write do+undo messages to journal.
* Translate "undo" command into the appropriate 'do' messages.
*/
#define TIMELINE_PORT 6100
void
Timeline_Server::handle_new ( int s )
{
printf( "new connection\n" );
}
void
Timeline_Server::handle_hang_up ( int s )
{
printf( "hangup\n" );
}
void
Timeline_Server::handle_request ( const char *s, int l )
{
printf( "request: %s", s );
}

38
Engine/Timeline_Server.H Normal file
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/*******************************************************************************/
/* Copyright (C) 2008 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. */
/*******************************************************************************/
#pragma once
#include "Server.H"
class Timeline_Server : public Server
{
protected:
void handle_new ( int s );
void handle_hang_up ( int s );
void handle_request ( const char *s, int l );
public:
Timeline_Server ( int port ) : Server ( port )
{
}
};

66
Engine/main.C Normal file
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/*******************************************************************************/
/* Copyright (C) 2008 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 "const.h"
#include "Audio_File.H"
#include "Peaks.H"
#include "Loggable.H"
#include "Timeline_Server.H"
/* TODO:
Run server process here.
* Manage session file.
* Keep state for all relevant objects (must mirror that in Timeline)
* Listen for incoming connections.
* Send and recieve 'do' messages to client(s), recording do and undo portions to journal. Serve peaks (maybe in a separate process?)
Peak request looks like:
> read_peaks "foo.wav" fpp start end
Response looks like (in binary floats):
> length min max min max min max
State must be communicated to realtime thread locklessly so that:
Realtime:
* Manage JACK transport.
* Manage JACK outputs.
* Stream regions from disk.
* Manage JACK inputs.
* Stream tracks to disk when recording.
* Stream control points as OSC messages. (RT safe?)
*/
int
main ( int argc, char **argv )
{
Timeline_Server tls( 6110 );
tls.run();
}

1
Makefile
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@ -5,6 +5,7 @@ LIBS := -lsndfile `fltk-config --ldflags`
all: all
%:
@ $(MAKE) -s -C Engine CXXFLAGS="$(CXXFLAGS)" LIBS="$(LIBS)" $@
@ $(MAKE) -s -C FL CXXFLAGS="$(CXXFLAGS)" LIBS="$(LIBS)" $@
@ $(MAKE) -s -C Timeline CXXFLAGS="$(CXXFLAGS)" LIBS="$(LIBS)" $@
@ $(MAKE) -s -C Mixer CXXFLAGS="$(CXXFLAGS)" LIBS="$(LIBS)" $@