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/* slt.c: SLT data handling routines
Copyright (c) 2004-2016 Philip Kendall
Copyright (c) 2015 Stuart Brady
Copyright (c) 2015 Fredrick Meunier
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Author contact information:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#include <config.h>
#include <string.h>
#include <libspectrum.h>
#include "infrastructure/startup_manager.h"
#include "module.h"
#include "settings.h"
#include "slt.h"
#include "spectrum.h"
#include "ui/ui.h"
/* .slt level data */
static libspectrum_byte *slt[256];
static size_t slt_length[256];
static libspectrum_byte *slt_screen; /* The screenshot from the .slt file */
static int slt_screen_level; /* The level of the screenshot.
Not used for anything AFAIK */
static void slt_from_snapshot( libspectrum_snap *snap );
static void slt_to_snapshot( libspectrum_snap *snap );
static module_info_t slt_module_info = {
NULL,
NULL,
NULL,
slt_from_snapshot,
slt_to_snapshot,
};
static int
slt_init( void *context )
{
module_register( &slt_module_info );
return 0;
}
void
slt_register_startup( void )
{
startup_manager_module dependencies[] = { STARTUP_MANAGER_MODULE_SETUID };
startup_manager_register( STARTUP_MANAGER_MODULE_SLT, dependencies,
ARRAY_SIZE( dependencies ), slt_init, NULL, NULL );
}
int
slt_trap( libspectrum_word address, libspectrum_byte level )
{
size_t length;
libspectrum_byte *data;
if( !settings_current.slt_traps ) return 0;
if( slt_length[ level ] ) {
length = slt_length[ level ];
data = slt[ level ];
while( length-- ) writebyte( address++, *data++ );
}
return 0;
}
static void
slt_from_snapshot( libspectrum_snap *snap )
{
size_t i;
for( i=0; i<256; i++ ) {
slt_length[i] = libspectrum_snap_slt_length( snap, i );
if( slt_length[i] ) {
slt[i] = memory_pool_allocate( slt_length[i] *
sizeof( libspectrum_byte ) );
memcpy( slt[i], libspectrum_snap_slt( snap, i ),
libspectrum_snap_slt_length( snap, i ) );
}
}
if( libspectrum_snap_slt_screen( snap ) ) {
slt_screen = memory_pool_allocate( 6912 * sizeof( libspectrum_byte ) );
memcpy( slt_screen, libspectrum_snap_slt_screen( snap ), 6912 );
slt_screen_level = libspectrum_snap_slt_screen_level( snap );
}
}
static void
slt_to_snapshot( libspectrum_snap *snap )
{
size_t i;
libspectrum_byte *buffer;
for( i=0; i<256; i++ ) {
libspectrum_snap_set_slt_length( snap, i, slt_length[i] );
if( slt_length[i] ) {
buffer = libspectrum_new( libspectrum_byte, slt_length[i] );
memcpy( buffer, slt[i], slt_length[i] );
libspectrum_snap_set_slt( snap, i, buffer );
}
}
if( slt_screen ) {
buffer = libspectrum_new( libspectrum_byte, 6912 );
memcpy( buffer, slt_screen, 6912 );
libspectrum_snap_set_slt_screen( snap, buffer );
libspectrum_snap_set_slt_screen_level( snap, slt_screen_level );
}
}
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