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/* covox.c: Routines for handling the Covox
Copyright (c) 2011-2016 Jon Mitchell, Philip Kendall
Copyright (c) 2015 Stuart Brady
Copyright (c) 2017 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:
Philip: philip-fuse@shadowmagic.org.uk
Jon: ooblick@gmail.com
*/
#include <config.h>
#include <libspectrum.h>
#include "compat.h"
#include "infrastructure/startup_manager.h"
#include "machine.h"
#include "module.h"
#include "periph.h"
#include "settings.h"
#include "sound.h"
#include "covox.h"
#include "spectrum.h"
static void covox_reset( int hard_reset );
static void covox_enabled_snapshot( libspectrum_snap *snap );
static void covox_from_snapshot( libspectrum_snap *snap );
static void covox_to_snapshot( libspectrum_snap *snap );
static module_info_t covox_module_info = {
/* .reset = */ covox_reset,
/* .romcs = */ NULL,
/* .snapshot_enabled = */ covox_enabled_snapshot,
/* .snapshot_from = */ covox_from_snapshot,
/* .snapshot_to = */ covox_to_snapshot,
};
static const periph_port_t covox_ports_fb[] = {
{ 0x00ff, 0x00fb, NULL, sound_covox_write },
{ 0, 0, NULL, NULL }
};
static const periph_t covox_periph_fb = {
/* .option = */ &settings_current.covox,
/* .ports = */ covox_ports_fb,
/* .hard_reset = */ 1,
/* .activate = */ NULL,
};
static const periph_port_t covox_ports_dd[] = {
{ 0x00ff, 0x00dd, NULL, sound_covox_write },
{ 0, 0, NULL, NULL }
};
static const periph_t covox_periph_dd = {
/* .option = */ &settings_current.covox,
/* .ports = */ covox_ports_dd,
/* .hard_reset = */ 1,
/* .activate = */ NULL,
};
static int
covox_init( void *context )
{
module_register( &covox_module_info );
periph_register( PERIPH_TYPE_COVOX_FB, &covox_periph_fb );
periph_register( PERIPH_TYPE_COVOX_DD, &covox_periph_dd );
return 0;
}
void
covox_register_startup( void )
{
startup_manager_module dependencies[] = { STARTUP_MANAGER_MODULE_SETUID };
startup_manager_register( STARTUP_MANAGER_MODULE_COVOX, dependencies,
ARRAY_SIZE( dependencies ), covox_init, NULL,
NULL );
}
static void
covox_reset( int hard_reset GCC_UNUSED )
{
machine_current->covox.covox_dac = 0;
}
static void
covox_enabled_snapshot( libspectrum_snap *snap )
{
settings_current.covox = libspectrum_snap_covox_active( snap );
}
static void
covox_from_snapshot( libspectrum_snap *snap )
{
if( !libspectrum_snap_covox_active( snap ) ) return;
/* We just set the internal machine status to the last read covox_dac
* instead of trying to write to the sound routines, as at this stage
* sound isn't initialised so there is no synth to write to
*/
machine_current->covox.covox_dac = libspectrum_snap_covox_dac( snap );
}
static void
covox_to_snapshot( libspectrum_snap *snap )
{
if( !(periph_is_active( PERIPH_TYPE_COVOX_FB ) ||
periph_is_active( PERIPH_TYPE_COVOX_DD ) ) )
return;
libspectrum_snap_set_covox_active( snap, 1 );
libspectrum_snap_set_covox_dac( snap, machine_current->covox.covox_dac );
}
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