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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id: dmedia.cpp$
*/
/*
* IRIX dmedia support by Rainer Canavan <scumm@canavan.de>
* some code liberated from seq.cpp and coremidi.cpp
*/
#if defined(IRIX)
#include "common/scummsys.h"
#include "common/util.h"
#include "sound/midiplugin.h"
#include "sound/mpu401.h"
#include <dmedia/midi.h>
#include <sys/types.h>
#include <bstring.h>
#include <unistd.h>
////////////////////////////////////////
//
// IRIX dmedia midi driver
//
////////////////////////////////////////
#define SEQ_MIDIPUTC 5
class MidiDriver_DMEDIA : public MidiDriver_MPU401 {
public:
MidiDriver_DMEDIA();
int open();
void close();
void send(uint32 b);
void sysEx(const byte *msg, uint16 length);
private:
bool _isOpen;
int _deviceNum;
char *_midiportName;
MDport _midiPort;
int _fd;
};
MidiDriver_DMEDIA::MidiDriver_DMEDIA() {
_isOpen = false;
_deviceNum = 0;
_midiportName = NULL;
}
int MidiDriver_DMEDIA::open() {
int numinterfaces;
if (_isOpen)
return MERR_ALREADY_OPEN;
_isOpen = true;
warning("dmedia init");
numinterfaces = mdInit();
if (numinterfaces <= 0) {
fprintf(stderr,"No MIDI interfaces configured.\n");
perror("Cannot initialize libmd for sound output");
return -1;
}
if (getenv("SCUMMVM_MIDIPORT")) {
_deviceNum = atoi(getenv("SCUMMVM_MIDIPORT"));
_midiportName = mdGetName(_deviceNum);
}
else
{
_midiportName = mdGetName(0);
warning("SCUMMVM_MIDIPORT environment variable not set, using Port %s", _midiportName);
_deviceNum = 0;
}
_midiPort = mdOpenOutPort(_midiportName);
if (!_midiPort) {
warning("Failed to open MIDI interface %s", _midiportName);
return -1;
}
_fd = mdGetFd(_midiPort);
if (!_fd) {
warning("Failed to aquire filehandle for MIDI port %s", _midiportName);
mdClosePort(_midiPort);
return -1;
}
mdSetStampMode(_midiPort, MD_NOSTAMP); /* don't use Timestamps */
return 0;
}
void MidiDriver_DMEDIA::close() {
mdClosePort(_midiPort);
_isOpen = false;
_deviceNum = 0;
_midiportName = NULL;
}
void MidiDriver_DMEDIA::send(uint32 b) {
MDevent event;
byte status_byte = (b & 0x000000FF);
byte first_byte = (b & 0x0000FF00) >> 8;
byte second_byte = (b & 0x00FF0000) >> 16;
event.sysexmsg = NULL;
event.msg[0] = status_byte;
event.msg[1] = first_byte;
event.msg[2] = second_byte;
switch (status_byte & 0xF0) {
case 0x80: // Note Off
case 0x90: // Note On
case 0xA0: // Polyphonic Aftertouch
case 0xB0: // Controller Change
case 0xE0: // Pitch Bending
event.msglen = 3;
break;
case 0xC0: // Programm Change
case 0xD0: // Monophonic Aftertouch
event.msglen = 2;
break;
default:
warning("DMediaMIDI driver encountered unsupported status byte: 0x%02x", status_byte);
event.msglen = 3;
break;
}
if (mdSend(_midiPort, &event, 1) != 1) {
warning("failed sending MIDI event (dump follows...)");
warning("MIDI Event (len=%u):", event.msglen);
for (int i=0; i<event.msglen; i++) warning("%02x ",(int)event.msg[i]);
}
}
void MidiDriver_DMEDIA::sysEx (const byte *msg, uint16 length) {
MDevent event;
char buf [1024];
assert(length + 2 <= 256);
memcpy(buf, msg, length);
buf[length] = MD_EOX;
event.sysexmsg = buf;
event.msglen = length;
event.msg[0] = MD_SYSEX;
event.msg[1] = 0;
event.msg[2] = 0;
if (mdSend(_midiPort, &event, 1) != 1) {
fprintf(stderr,"failed sending MIDI SYSEX event (dump follows...)\n");
}
}
// Plugin interface
class DMediaMidiPlugin : public MidiPluginObject {
public:
virtual const char *getName() const {
return "DMedia";
}
virtual const char *getId() const {
return "dmedia";
}
virtual int getCapabilities() const {
return MDT_MIDI;
}
virtual PluginError createInstance(Audio::Mixer *mixer, MidiDriver **mididriver) const;
};
PluginError DMediaMidiPlugin::createInstance(Audio::Mixer *mixer, MidiDriver **mididriver) const {
*mididriver = new MidiDriver_DMEDIA();
return kNoError;
}
MidiDriver *MidiDriver_DMEDIA_create(Audio::Mixer *mixer) {
MidiDriver *mididriver;
DMediaMidiPlugin p;
p.createInstance(mixer, &mididriver);
return mididriver;
}
//#if PLUGIN_ENABLED_DYNAMIC(DMEDIA)
//REGISTER_PLUGIN_DYNAMIC(DMEDIA, PLUGIN_TYPE_MIDI, DMediaMidiPlugin);
//#else
REGISTER_PLUGIN_STATIC(DMEDIA, PLUGIN_TYPE_MIDI, DMediaMidiPlugin);
//#endif
#endif
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