rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 175 insertions, 0 deletions

diff --git a/libs/surfaces/mackie/surface_port.cc b/libs/surfaces/mackie/surface_port.cc
new file mode 100644
index 0000000000..cc5c5cf134
--- /dev/null
+++ b/libs/surfaces/mackie/surface_port.cc
@@ -0,0 +1,175 @@
+/*
+	Copyright (C) 2006,2007 John Anderson
+
+	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.
+*/
+#include "surface_port.h"
+
+#include "mackie_control_exception.h"
+#include "controls.h"
+
+#include <midi++/types.h>
+#include <midi++/port.h>
+#include <sigc++/sigc++.h>
+#include <boost/shared_array.hpp>
+
+#include "i18n.h"
+
+#include <sstream>
+
+#include <cstring>
+#include <cerrno>
+
+using namespace std;
+using namespace Mackie;
+
+SurfacePort::SurfacePort( MIDI::Port & port, int number )
+: _port( port ), _number( number ), _active( false )
+{
+}
+
+SurfacePort::~SurfacePort()
+{
+	//cout << "~SurfacePort::SurfacePort()" << endl;
+	// make sure another thread isn't reading or writing as we close the port
+	Glib::RecMutex::Lock lock( _rwlock );
+	_active = false;
+	//cout << "~SurfacePort::SurfacePort() finished" << endl;
+}
+
+// wrapper for one day when strerror_r is working properly
+string fetch_errmsg( int error_number )
+{
+	char * msg = strerror( error_number );
+	return msg;
+}
+	
+MidiByteArray SurfacePort::read()
+{
+	const int max_buf_size = 512;
+	MIDI::byte buf[max_buf_size];
+	MidiByteArray retval;
+
+	// check active. Mainly so that the destructor
+	// doesn't destroy the mutex while it's still locked
+	if ( !active() ) return retval;
+	
+	// return nothing read if the lock isn't acquired
+	Glib::RecMutex::Lock lock( _rwlock, Glib::TRY_LOCK );
+		
+	if ( !lock.locked() )
+	{
+		//cout << "SurfacePort::read not locked" << endl;
+		return retval;
+	}
+	
+	// check active again - destructor sequence
+	if ( !active() ) return retval;
+	
+	// read port and copy to return value
+	int nread = port().read (buf, sizeof (buf));
+
+	if (nread >= 0) {
+		retval.copy( nread, buf );
+		if ((size_t) nread == sizeof (buf))
+		{
+			retval << read();
+		}
+	}
+	else
+	{
+		if ( errno != EAGAIN )
+		{
+			ostringstream os;
+			os << "Surface: error reading from port: " << port().name();
+			os << ": " << errno << fetch_errmsg( errno );
+
+			cout << os.str() << endl;
+			inactive_event();
+			throw MackieControlException( os.str() );
+		}
+	}
+	return retval;
+}
+
+void SurfacePort::write( const MidiByteArray & mba )
+{
+	//if ( mba[0] == 0xf0 ) cout << "SurfacePort::write: " << mba << endl;
+	//cout << "SurfacePort::write: " << mba << endl;
+	
+	// check active before and after lock - to make sure
+	// that the destructor doesn't destroy the mutex while
+	// it's still in use
+	if ( !active() ) return;
+	Glib::RecMutex::Lock lock( _rwlock );
+	if ( !active() ) return;
+
+	int count = port().write( mba.bytes().get(), mba.size(), 0 );
+	if ( count != (int)mba.size() )
+	{
+		if ( errno != EAGAIN )
+		{
+			ostringstream os;
+			os << "Surface: couldn't write to port " << port().name();
+			os << ": " << errno << fetch_errmsg( errno );
+			
+			cout << os.str();
+			inactive_event();
+			throw MackieControlException( os.str() );
+		}
+	}
+	//if ( mba[0] == 0xf0 ) cout << "SurfacePort::write " << count << endl;
+}
+
+void SurfacePort::write_sysex( const MidiByteArray & mba )
+{
+	MidiByteArray buf;
+	buf << sysex_hdr() << mba << MIDI::eox;
+	write( buf );
+}
+
+void SurfacePort::write_sysex( MIDI::byte msg )
+{
+	MidiByteArray buf;
+	buf << sysex_hdr() << msg << MIDI::eox;
+	write( buf );
+}
+
+// This should be moved to midi++ at some point
+ostream & operator << ( ostream & os, const MIDI::Port & port )
+{
+	os << "device: " << port.device();
+	os << "; ";
+	os << "name: " << port.name();
+	os << "; ";
+	os << "type: " << port.type();
+	os << "; ";
+	os << "mode: " << port.mode();
+	os << "; ";
+	os << "ok: " << port.ok();
+	os << "; ";
+	return os;
+}
+
+ostream & Mackie::operator << ( ostream & os, const SurfacePort & port )
+{
+	os << "{ ";
+	os << "device: " << port.port().device();
+	os << "; ";
+	os << "name: " << port.port().name();
+	os << "; ";
+	os << " }";
+	return os;
+}