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/*
(c) Copyright 2012-2013 DirectFB integrated media GmbH
(c) Copyright 2001-2013 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Shimokawa <andi@directfb.org>,
Marek Pikarski <mass@directfb.org>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
//#define DIRECT_ENABLE_DEBUG
#include <config.h>
extern "C" {
#include <direct/debug.h>
#include <direct/messages.h>
#include <direct/util.h>
#include <voodoo/link.h>
}
#include <voodoo/connection.h>
#include <voodoo/manager.h>
D_DEBUG_DOMAIN( Voodoo_Connection, "Voodoo/Connection", "Voodoo Connection" );
/**********************************************************************************************************************/
VoodooConnection::VoodooConnection( VoodooLink *link )
:
magic(0),
manager(NULL),
link(link),
delay(0),
time_diff(0)
{
D_DEBUG_AT( Voodoo_Connection, "VoodooConnection::%s( %p )\n", __func__, this );
D_MAGIC_SET( this, VoodooConnection );
}
VoodooConnection::~VoodooConnection()
{
D_DEBUG_AT( Voodoo_Connection, "VoodooConnection::%s( %p )\n", __func__, this );
D_MAGIC_ASSERT( this, VoodooConnection );
link->Close( link );
D_MAGIC_CLEAR( this );
}
void
VoodooConnection::SetupTime()
{
DirectResult ret;
VoodooResponseMessage *response;
long long t1, t2;
D_DEBUG_AT( Voodoo_Connection, "VoodooConnection::%s( %p )\n", __func__, this );
D_MAGIC_ASSERT( this, VoodooConnection );
t1 = direct_clock_get_time( DIRECT_CLOCK_MONOTONIC );
ret = manager->do_request( manager->remote_time_service_id, 0, VREQ_RESPOND, &response );
if (ret) {
D_DERROR( ret, "Voodoo/Connection: Failed to call TimeService!\n" );
return;
}
t2 = direct_clock_get_time( DIRECT_CLOCK_MONOTONIC );
VoodooMessageParser parser;
unsigned int high, low;
long long micros;
VOODOO_PARSER_BEGIN( parser, response );
VOODOO_PARSER_GET_UINT( parser, high );
VOODOO_PARSER_GET_UINT( parser, low );
VOODOO_PARSER_END( parser );
micros = (long long) (((unsigned long long) high << 32) | low);
delay = t2 - t1;
time_diff = micros - t1 - delay / 2;
D_INFO( "Voodoo/Connection: Delay %lld us, time difference to remote is %lld us\n", delay, time_diff );
manager->finish_request( response );
}
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