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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002 R�diger Hanke
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* MorphOS sound support
*
* $Header$
*
*/
#include "stdafx.h"
#include "scumm.h"
#include <dos/dos.h>
#include <exec/memory.h>
#include <devices/ahi.h>
#include <devices/amidi.h>
#include <clib/alib_protos.h>
#include <proto/exec.h>
#include <proto/dos.h>
#include <proto/ahi.h>
#include "morphos.h"
#define AHI_BUF_SIZE (8*1024)
struct SignalSemaphore ScummMusicThreadRunning;
struct SignalSemaphore ScummSoundThreadRunning;
static struct MsgPort *ahiPort = NULL;
static struct AHIRequest *ahiReq[ 2 ] = { NULL, NULL };
static UWORD ahiCurBuf = 0;
static bool ahiReqSent[ 2 ] = { false, false };
static BYTE ahiDevice = -1;
UBYTE ahiUnit = AHI_DEFAULT_UNIT;
static char *ahiBuf[ 2 ] = { NULL, NULL };
static struct MsgPort *ScummMidiPort = NULL;
struct IOMidiRequest *ScummMidiRequest = NULL;
static struct MsgPort *MusicTimerMsgPort = NULL;
struct timerequest *MusicTimerIORequest = NULL;
bool init_morphos_music( ULONG MidiUnit )
{
MidiUnit = ScummMidiUnit; // Ugly fix, but ...
ScummMidiPort = CreateMsgPort();
if( ScummMidiPort )
{
ScummMidiRequest = (struct IOMidiRequest *)CreateIORequest( ScummMidiPort, sizeof( struct IOMidiRequest ) );
if( ScummMidiRequest )
{
ScummMidiRequest->amr_Version = 2;
if( OpenDevice( "amidi.device", MidiUnit, (struct IORequest *)ScummMidiRequest, AMIDIF_MIDISERVER ) )
{
DeleteIORequest( (struct IORequest *)ScummMidiRequest );
DeleteMsgPort( ScummMidiPort );
ScummMidiRequest = NULL;
ScummMidiPort = NULL;
}
}
else
{
DeleteMsgPort( ScummMidiPort );
ScummMidiPort = NULL;
}
}
if( !ScummMidiRequest )
{
warning( "Could not open AMidi - music will not play" );
return false;
}
MusicTimerMsgPort = CreateMsgPort();
if( MusicTimerMsgPort )
{
MusicTimerIORequest = (struct timerequest *)CreateIORequest( MusicTimerMsgPort, sizeof( struct timerequest ) );
if( MusicTimerIORequest )
{
if( OpenDevice( "timer.device", UNIT_MICROHZ, (struct IORequest *)MusicTimerIORequest, 0 ) )
{
DeleteIORequest( (struct IORequest *)MusicTimerIORequest );
DeleteMsgPort( MusicTimerMsgPort );
MusicTimerIORequest = NULL;
MusicTimerMsgPort = NULL;
}
}
else
{
DeleteMsgPort( MusicTimerMsgPort );
MusicTimerMsgPort = NULL;
}
}
if( !MusicTimerIORequest )
{
warning( "Could not open timer device - music will not play" );
return false;
}
return true;
}
void exit_morphos_music()
{
if( ScummMidiRequest )
{
CloseDevice( (struct IORequest *)ScummMidiRequest );
DeleteIORequest( (struct IORequest *)ScummMidiRequest );
DeleteMsgPort( ScummMidiPort );
}
if( MusicTimerIORequest )
{
CloseDevice( (struct IORequest *)MusicTimerIORequest );
DeleteIORequest( (struct IORequest *)MusicTimerIORequest );
DeleteMsgPort( MusicTimerMsgPort );
}
}
static bool init_morphos_sound()
{
if( !(ahiPort = CreateMsgPort()) )
return false;
if( !(ahiReq[ 0 ] = (struct AHIRequest *)CreateIORequest( ahiPort, sizeof( struct AHIRequest ) )) )
{
DeleteMsgPort( ahiPort );
ahiPort = NULL;
return false;
}
if( !(ahiReq[ 1 ] = (struct AHIRequest *)AllocVec( sizeof( struct AHIRequest ), MEMF_ANY | MEMF_PUBLIC )) )
{
DeleteIORequest( ahiReq[ 0 ] );
DeleteMsgPort( ahiPort );
ahiReq[ 0 ] = NULL;
ahiPort = NULL;
return false;
}
if( !(ahiBuf[ 0 ] = (char *)AllocVec( 2*AHI_BUF_SIZE, MEMF_ANY | MEMF_PUBLIC )) )
{
FreeVec( ahiReq[ 1 ] );
DeleteIORequest( ahiReq[ 0 ] );
DeleteMsgPort( ahiPort );
ahiReq[ 0 ] = NULL;
ahiReq[ 1 ] = NULL;
ahiPort = NULL;
return false;
}
ahiBuf[ 1 ] = &ahiBuf[ 0 ][ AHI_BUF_SIZE ];
ahiReq[ 0 ]->ahir_Version = 4;
if( ahiDevice = OpenDevice( AHINAME, 0, (struct IORequest *)ahiReq[ 0 ], 0 ) )
{
FreeVec( ahiBuf[ 0 ] );
FreeVec( ahiReq[ 1 ] );
DeleteIORequest( ahiReq[ 0 ] );
DeleteMsgPort( ahiPort );
ahiBuf[ 0 ] = NULL;
ahiReq[ 0 ] = NULL;
ahiReq[ 1 ] = NULL;
ahiPort = NULL;
return false;
}
CopyMem( ahiReq[ 0 ], ahiReq[ 1 ], sizeof( struct AHIRequest ) );
ahiCurBuf = 0;
ahiReqSent[ 0 ] = FALSE;
ahiReqSent[ 1 ] = FALSE;
return true;
}
static void exit_morphos_sound()
{
if( ahiReq[ 1 ] )
FreeVec( ahiReq[ 1 ] );
if( ahiReq[ 0 ] )
{
CloseDevice( (struct IORequest *)ahiReq[ 0 ] );
DeleteIORequest( ahiReq[ 0 ] );
}
if( ahiBuf[ 0 ] )
FreeVec( (APTR)ahiBuf[ 0 ] );
if( ahiPort )
DeleteMsgPort( ahiPort );
}
int morphos_sound_thread( OSystem_MorphOS *syst, ULONG SampleType )
{
ULONG signals;
bool initialized;
ObtainSemaphore( &ScummSoundThreadRunning );
initialized = init_morphos_sound();
if( !initialized )
{
warning( "Sound could not be initialized. The game may hang at some point (press Ctrl-z then)." );
Wait( SIGBREAKF_CTRL_C );
}
else
{
for(;;)
{
while( !ahiReqSent[ ahiCurBuf ] || CheckIO( (struct IORequest *)ahiReq[ ahiCurBuf ] ) )
{
struct AHIRequest *req = ahiReq[ ahiCurBuf ];
UWORD ahiOtherBuf = !ahiCurBuf;
if( ahiReqSent[ ahiCurBuf ] )
WaitIO( (struct IORequest *)req );
syst->fill_sound( (byte *)ahiBuf[ ahiCurBuf ], AHI_BUF_SIZE );
req->ahir_Std.io_Message.mn_Node.ln_Pri = 0;
req->ahir_Std.io_Command = CMD_WRITE;
req->ahir_Std.io_Data = ahiBuf[ ahiCurBuf ];
req->ahir_Std.io_Length = AHI_BUF_SIZE;
req->ahir_Type = SampleType;
req->ahir_Frequency = SAMPLES_PER_SEC;
req->ahir_Position = 0x8000;
req->ahir_Volume = 0x10000;
req->ahir_Link = (ahiReqSent[ ahiOtherBuf ] && !CheckIO( (struct IORequest *)ahiReq[ ahiOtherBuf ] )) ? ahiReq[ ahiOtherBuf ] : NULL;
SendIO( (struct IORequest *)req );
ahiReqSent[ ahiCurBuf ] = true;
ahiCurBuf = ahiOtherBuf;
}
signals = Wait( SIGBREAKF_CTRL_C | (1 << ahiPort->mp_SigBit) );
if( signals & SIGBREAKF_CTRL_C )
break;
}
if( ahiReqSent[ ahiCurBuf ] )
{
AbortIO( (struct IORequest *)ahiReq[ ahiCurBuf ] );
WaitIO ( (struct IORequest *)ahiReq[ ahiCurBuf ] );
ahiReqSent[ ahiCurBuf ] = false;
}
if( ahiReqSent[ !ahiCurBuf ] )
{
AbortIO( (struct IORequest *)ahiReq[ !ahiCurBuf ] );
WaitIO ( (struct IORequest *)ahiReq[ !ahiCurBuf ] );
ahiReqSent[ !ahiCurBuf ] = false;
}
}
exit_morphos_sound();
ReleaseSemaphore( &ScummSoundThreadRunning );
RemTask( NULL );
return 0;
}
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