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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001/2002 The ScummVM project
*
* 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.
*
* $Header$
*/
/*
* Raw output support by Michael Pearce
* MorphOS support by Ruediger Hanke
* Alsa support by Nicolas Noble <nicolas@nobis-crew.org> copied from
* both the QuickTime support and (vkeybd http://www.alsa-project.org/~iwai/alsa.html)
*/
#include "stdafx.h"
#include "mididrv.h"
#include "mpu401.h"
#include "common/engine.h" // for warning/error/debug
#include "common/util.h" // for ARRAYSIZE
/* Default (empty) property method */
uint32 MidiDriver::property(int prop, uint32 param)
{
return 0;
}
/* retrieve a string representation of an error code */
const char *MidiDriver::getErrorName(int error_code)
{
static const char *const midi_errors[] = {
"No error",
"Cannot connect",
"Streaming not available",
"Device not available",
"Driver already open"
};
if ((uint) error_code >= ARRAYSIZE(midi_errors))
return "Unknown Error";
return midi_errors[error_code];
}
#ifdef __MORPHOS__
#include <exec/memory.h>
#include <exec/types.h>
#include <devices/etude.h>
#include <clib/alib_protos.h>
#include <proto/exec.h>
#include <proto/etude.h>
#include "morphos_sound.h"
/* MorphOS MIDI driver */
class MidiDriver_ETUDE : public MidiDriver_MPU401 {
public:
MidiDriver_ETUDE();
int open(int mode);
void close();
void send(uint32 b);
private:
enum {
NUM_BUFFERS = 2,
MIDI_EVENT_SIZE = 64,
BUFFER_SIZE = MIDI_EVENT_SIZE * 12,
};
uint32 property(int prop, uint32 param);
bool _isOpen;
};
MidiDriver_ETUDE::MidiDriver_ETUDE()
{
_isOpen = false;
}
int MidiDriver_ETUDE::open()
{
if (_isOpen)
return MERR_ALREADY_OPEN;
_isOpen = true;
if (!init_morphos_music(0, ETUDEF_DIRECT))
return MERR_DEVICE_NOT_AVAILABLE;
return 0;
}
void MidiDriver_ETUDE::close()
{
exit_morphos_music();
_isOpen = false;
}
void MidiDriver_ETUDE::send(uint32 b)
{
if (_isOpen)
error("MidiDriver_ETUDE::send called but driver was no opened");
if (ScummMidiRequest) {
ULONG midi_data = READ_LE_UINT32(&b);
SendShortMidiMsg(ScummMidiRequest, midi_data);
}
}
extern MidiDriver* EtudeMidiDriver = NULL;
MidiDriver *MidiDriver_ETUDE_create()
{
if (!EtudeMidiDriver)
EtudeMidiDriver = new MidiDriver_ETUDE();
return EtudeMidiDriver;
}
#endif // __MORPHOS__
#if defined(UNIX) && !defined(__BEOS__)
#define SEQ_MIDIPUTC 5
#define SPECIAL_CHANNEL 9
class MidiDriver_SEQ : public MidiDriver_MPU401 {
public:
MidiDriver_SEQ();
int open();
void close();
void send(uint32 b);
private:
bool _isOpen;
int device, _device_num;
};
MidiDriver_SEQ::MidiDriver_SEQ()
{
_isOpen = false;
device = 0;
_device_num = 0;
}
int MidiDriver_SEQ::open()
{
if (_isOpen)
return MERR_ALREADY_OPEN;
_isOpen = true;
device = 0;
char *device_name = getenv("SCUMMVM_MIDI");
if (device_name != NULL) {
device = (::open((device_name), O_RDWR, 0));
} else {
warning("You need to set-up the SCUMMVM_MIDI environment variable properly (see README) ");
}
if ((device_name == NULL) || (device < 0)) {
if (device_name == NULL)
warning("Opening /dev/null (no music will be heard) ");
else
warning("Cannot open rawmidi device %s - using /dev/null (no music will be heard) ",
device_name);
device = (::open(("/dev/null"), O_RDWR, 0));
if (device < 0)
error("Cannot open /dev/null to dump midi output");
}
if (getenv("SCUMMVM_MIDIPORT"))
_device_num = atoi(getenv("SCUMMVM_MIDIPORT"));
return 0;
}
void MidiDriver_SEQ::close()
{
::close(device);
_isOpen = false;
}
void MidiDriver_SEQ::send(uint32 b)
{
unsigned char buf[256];
int position = 0;
switch (b & 0xF0) {
case 0x80:
case 0x90:
case 0xA0:
case 0xB0:
case 0xE0:
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)b;
buf[position++] = _device_num;
buf[position++] = 0;
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)((b >> 8) & 0x7F);
buf[position++] = _device_num;
buf[position++] = 0;
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)((b >> 16) & 0x7F);
buf[position++] = _device_num;
buf[position++] = 0;
break;
case 0xC0:
case 0xD0:
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)b;
buf[position++] = _device_num;
buf[position++] = 0;
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)((b >> 8) & 0x7F);
buf[position++] = _device_num;
buf[position++] = 0;
break;
default:
fprintf(stderr, "Unknown : %08x\n", (int)b);
break;
}
write(device, buf, position);
}
MidiDriver *MidiDriver_SEQ_create()
{
return new MidiDriver_SEQ();
}
#endif
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