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scummvm/sound/mididrv.cpp

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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.
*
* $Header$
*/
/*
* Timidity support by Lionel Ulmer <lionel.ulmer@free.fr>
* QuickTime support by Florent Boudet <flobo@ifrance.com>
* 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 "fmopl.h"
#include "mixer.h"
#include "common/engine.h" // for warning/error/debug
#include "common/util.h"
#if defined(WIN32) && !defined(_WIN32_WCE)
/* Windows MIDI driver */
class MidiDriver_WIN : public MidiDriver {
public:
int open(int mode);
void close();
void send(uint32 b);
void pause(bool p);
void set_stream_callback(void *param, StreamCallback *sc);
void setPitchBendRange (byte channel, uint range) { }
private:
struct MyMidiHdr {
MIDIHDR hdr;
};
enum {
NUM_PREPARED_HEADERS = 2,
MIDI_EVENT_SIZE = 64,
BUFFER_SIZE = MIDI_EVENT_SIZE * 12,
};
StreamCallback *_stream_proc;
void *_stream_param;
int _mode;
HMIDIOUT _mo;
HMIDISTRM _ms;
MyMidiHdr *_prepared_headers;
uint16 _time_div;
void unprepare();
void prepare();
void check_error(MMRESULT result);
void fill_all();
uint32 property(int prop, uint32 param);
static void CALLBACK midi_callback(HMIDIOUT hmo, UINT wMsg,
DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
};
void MidiDriver_WIN::set_stream_callback(void *param, StreamCallback *sc)
{
_stream_param = param;
_stream_proc = sc;
}
void CALLBACK MidiDriver_WIN::midi_callback(HMIDIOUT hmo, UINT wMsg,
DWORD dwInstance, DWORD dwParam1, DWORD dwParam2)
{
switch (wMsg) {
case MM_MOM_DONE:{
MidiDriver_WIN *md = ((MidiDriver_WIN *) dwInstance);
if (md->_mode)
md->fill_all();
break;
}
}
}
int MidiDriver_WIN::open(int mode)
{
if (_mode != 0)
return MERR_ALREADY_OPEN;
_mode = mode;
if (mode == MO_SIMPLE) {
MMRESULT res = midiOutOpen((HMIDIOUT *) & _mo, MIDI_MAPPER, NULL, NULL, 0);
if (res != MMSYSERR_NOERROR)
check_error(res);
} else {
/* streaming mode */
MIDIPROPTIMEDIV mptd;
UINT _midi_device_id = 0;
check_error(midiStreamOpen(&_ms, &_midi_device_id, 1,
(uint32)midi_callback, (uint32)this, CALLBACK_FUNCTION));
prepare();
mptd.cbStruct = sizeof(mptd);
mptd.dwTimeDiv = _time_div;
check_error(midiStreamProperty(_ms, (byte *)&mptd, MIDIPROP_SET | MIDIPROP_TIMEDIV));
fill_all();
}
return 0;
}
void MidiDriver_WIN::fill_all()
{
if (_stream_proc == NULL) {
error("MidiDriver_WIN::fill_all() called, but _stream_proc==NULL");
}
uint i;
MyMidiHdr *mmh = _prepared_headers;
MidiEvent my_evs[64];
for (i = 0; i != NUM_PREPARED_HEADERS; i++, mmh++) {
if (!(mmh->hdr.dwFlags & MHDR_INQUEUE)) {
int num = _stream_proc(_stream_param, my_evs, 64);
int i;
/* end of stream? */
if (num == 0)
break;
MIDIEVENT *ev = (MIDIEVENT *)mmh->hdr.lpData;
MidiEvent *my_ev = my_evs;
for (i = 0; i != num; i++, my_ev++) {
ev->dwStreamID = 0;
ev->dwDeltaTime = my_ev->delta;
switch (my_ev->event >> 24) {
case 0:
ev->dwEvent = my_ev->event;
break;
case ME_TEMPO:
/* change tempo event */
ev->dwEvent = (ME_TEMPO << 24) | (my_ev->event & 0xFFFFFF);
break;
default:
error("Invalid event type passed");
}
/* increase stream pointer by 12 bytes
* (need to be 12 bytes, and sizeof(MIDIEVENT) is 16)
*/
ev = (MIDIEVENT *)((byte *)ev + 12);
}
mmh->hdr.dwBytesRecorded = num * 12;
check_error(midiStreamOut(_ms, &mmh->hdr, sizeof(mmh->hdr)));
}
}
}
void MidiDriver_WIN::prepare()
{
int i;
MyMidiHdr *mmh;
_prepared_headers = (MyMidiHdr *) calloc(sizeof(MyMidiHdr), 2);
for (i = 0, mmh = _prepared_headers; i != NUM_PREPARED_HEADERS; i++, mmh++) {
mmh->hdr.dwBufferLength = BUFFER_SIZE;
mmh->hdr.lpData = (LPSTR) calloc(BUFFER_SIZE, 1);
check_error(midiOutPrepareHeader((HMIDIOUT) _ms, &mmh->hdr, sizeof(mmh->hdr)));
}
}
void MidiDriver_WIN::unprepare()
{
uint i;
MyMidiHdr *mmh = _prepared_headers;
for (i = 0; i != NUM_PREPARED_HEADERS; i++, mmh++) {
check_error(midiOutUnprepareHeader((HMIDIOUT) _ms, &mmh->hdr, sizeof(mmh->hdr)));
free(mmh->hdr.lpData);
mmh->hdr.lpData = NULL;
}
free(_prepared_headers);
}
void MidiDriver_WIN::close()
{
int mode_was = _mode;
_mode = 0;
switch (mode_was) {
case MO_SIMPLE:
check_error(midiOutClose(_mo));
break;
case MO_STREAMING:;
check_error(midiStreamStop(_ms));
check_error(midiOutReset((HMIDIOUT) _ms));
unprepare();
check_error(midiStreamClose(_ms));
break;
}
}
void MidiDriver_WIN::send(uint32 b)
{
union {
DWORD dwData;
BYTE bData[4];
} u;
if (_mode != MO_SIMPLE)
error("MidiDriver_WIN:send called but driver is not in simple mode");
u.bData[3] = (byte)((b & 0xFF000000) >> 24);
u.bData[2] = (byte)((b & 0x00FF0000) >> 16);
u.bData[1] = (byte)((b & 0x0000FF00) >> 8);
u.bData[0] = (byte)(b & 0x000000FF);
//printMidi(u.bData[0], u.bData[1], u.bData[2], u.bData[3]);
check_error(midiOutShortMsg(_mo, u.dwData));
}
void MidiDriver_WIN::pause(bool p)
{
if (_mode == MO_STREAMING) {
if (p)
check_error(midiStreamPause(_ms));
else
check_error(midiStreamRestart(_ms));
}
}
void MidiDriver_WIN::check_error(MMRESULT result)
{
char buf[200];
if (result != MMSYSERR_NOERROR) {
midiOutGetErrorText(result, buf, 200);
warning("MM System Error '%s'", buf);
}
}
uint32 MidiDriver_WIN::property(int prop, uint32 param)
{
switch (prop) {
/* 16-bit time division according to standard midi specification */
case PROP_TIMEDIV:
_time_div = (uint16)param;
return 1;
}
return 0;
}
MidiDriver *MidiDriver_WIN_create()
{
return new MidiDriver_WIN();
}
#endif // WIN32
#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 {
public:
int open(int mode);
void close();
void send(uint32 b);
void pause(bool p);
void set_stream_callback(void *param, StreamCallback *sc);
void setPitchBendRange (byte channel, uint range) { }
private:
enum {
NUM_BUFFERS = 2,
MIDI_EVENT_SIZE = 64,
BUFFER_SIZE = MIDI_EVENT_SIZE * 12,
};
static void midi_callback(ULONG msg, struct IOMidiRequest *req, APTR user_data);
void fill_all();
uint32 property(int prop, uint32 param);
StreamCallback *_stream_proc;
void *_stream_param;
IOMidiRequest *_stream_req[NUM_BUFFERS];
void *_stream_buf[NUM_BUFFERS];
bool _req_sent[NUM_BUFFERS];
int _mode;
uint16 _time_div;
};
void MidiDriver_ETUDE::set_stream_callback(void *param, StreamCallback *sc)
{
_stream_param = param;
_stream_proc = sc;
}
int MidiDriver_ETUDE::open(int mode)
{
if (_mode != 0)
return MERR_ALREADY_OPEN;
_mode = mode;
if (!init_morphos_music(0, _mode == MO_STREAMING ? ETUDEF_STREAMING : ETUDEF_DIRECT))
return MERR_DEVICE_NOT_AVAILABLE;
if (_mode == MO_STREAMING && ScummMidiRequest) {
_stream_req[0] = ScummMidiRequest;
_stream_req[1] = (IOMidiRequest *) AllocVec(sizeof (IOMidiRequest), MEMF_PUBLIC);
_stream_buf[0] = AllocVec(BUFFER_SIZE, MEMF_PUBLIC);
_stream_buf[1] = AllocVec(BUFFER_SIZE, MEMF_PUBLIC);
_req_sent[0] = _req_sent[1] = false;
if (_stream_req[1] == NULL || _stream_buf[0] == NULL || _stream_buf[1] == NULL) {
close();
return MERR_DEVICE_NOT_AVAILABLE;
}
if (ScummMidiRequest)
{
memcpy(_stream_req[1], _stream_req[0], sizeof (IOMidiRequest));
struct TagItem MidiStreamTags[] = { { ESA_Callback, (ULONG) &midi_callback },
{ ESA_UserData, (ULONG) this },
{ ESA_TimeDiv, _time_div },
{ TAG_DONE, 0 }
};
SetMidiStreamAttrsA(ScummMidiRequest, MidiStreamTags);
fill_all();
}
}
return 0;
}
void MidiDriver_ETUDE::close()
{
if (_mode == MO_STREAMING) {
if (_req_sent[0]) {
AbortIO((IORequest *) _stream_req[0]);
WaitIO((IORequest *) _stream_req[0]);
_req_sent[0] = false;
}
if (_req_sent[1]) {
AbortIO((IORequest *) _stream_req[1]);
WaitIO((IORequest *) _stream_req[1]);
_req_sent[1] = false;
}
if (_stream_req[1]) FreeVec(_stream_req[1]);
if (_stream_buf[0]) FreeVec(_stream_buf[0]);
if (_stream_buf[1]) FreeVec(_stream_buf[1]);
}
exit_morphos_music();
_mode = 0;
}
void MidiDriver_ETUDE::send(uint32 b)
{
if (_mode != MO_SIMPLE)
error("MidiDriver_ETUDE::send called but driver is not in simple mode");
if (ScummMidiRequest) {
ULONG midi_data = READ_LE_UINT32(&b);
SendShortMidiMsg(ScummMidiRequest, midi_data);
}
}
void MidiDriver_ETUDE::midi_callback(ULONG msg, struct IOMidiRequest *req, APTR user_data)
{
switch (msg) {
case ETUDE_STREAM_MSG_BLOCKEND: {
MidiDriver_ETUDE *md = ((MidiDriver_ETUDE *) user_data);
if (md && md->_mode)
md->fill_all();
break;
}
}
}
void MidiDriver_ETUDE::fill_all()
{
if (_stream_proc == NULL) {
error("MidiDriver_ETUDE::fill_all() called, but _stream_proc == NULL");
}
uint buf;
MidiEvent my_evs[64];
for (buf = 0; buf < NUM_BUFFERS; buf++) {
if (!_req_sent[buf] || CheckIO((IORequest *) _stream_req[buf])) {
int num = _stream_proc(_stream_param, my_evs, 64);
if (_req_sent[buf]) {
WaitIO((IORequest *) _stream_req[buf]);
_req_sent[buf] = false;
}
/* end of stream? */
if (num == 0)
break;
MIDIEVENT *ev = (MIDIEVENT *) _stream_buf[buf];
MidiEvent *my_ev = my_evs;
for (int i = 0; i < num; i++, my_ev++) {
ev->me_StreamID = 0;
ev->me_DeltaTime = my_ev->delta;
switch (my_ev->event >> 24) {
case 0:
ev->me_Event = my_ev->event;
break;
case ME_TEMPO:
/* change tempo event */
ev->me_Event = (MEVT_TEMPO << 24) | (my_ev->event & 0xFFFFFF);
break;
default:
error("Invalid event type passed");
}
/* increase stream pointer by 12 bytes
* (need to be 12 bytes, and sizeof(MIDIEVENT) is 16)
*/
ev = (MIDIEVENT *)((byte *)ev + 12);
}
ConvertWindowsMidiStream(_stream_buf[buf], num * 12);
_stream_req[buf]->emr_Std.io_Command = CMD_WRITE;
_stream_req[buf]->emr_Std.io_Data = _stream_buf[buf];
_stream_req[buf]->emr_Std.io_Length = num * 12;
SendIO((IORequest *) _stream_req[buf]);
_req_sent[buf] = true;
}
}
}
void MidiDriver_ETUDE::pause(bool p)
{
if (_mode == MO_STREAMING && ScummMidiRequest) {
if (p)
PauseMidiStream(ScummMidiRequest);
else
RestartMidiStream(ScummMidiRequest);
}
}
uint32 MidiDriver_ETUDE::property(int prop, uint32 param)
{
switch (prop) {
/* 16-bit time division according to standard midi specification */
case PROP_TIMEDIV:
_time_div = (uint16)param;
return 1;
}
return 0;
}
extern MidiDriver* EtudeMidiDriver;
MidiDriver *MidiDriver_ETUDE_create()
{
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 {
public:
MidiDriver_SEQ();
int open(int mode);
void close();
void send(uint32 b);
void pause(bool p);
void set_stream_callback(void *param, StreamCallback *sc);
void setPitchBendRange (byte channel, uint range) { }
private:
StreamCallback *_stream_proc;
void *_stream_param;
int _mode;
int device, _device_num;
};
MidiDriver_SEQ::MidiDriver_SEQ()
{
_mode = 0;
device = 0;
_device_num = 0;
}
int MidiDriver_SEQ::open(int mode)
{
if (_mode != 0)
return MERR_ALREADY_OPEN;
device = 0;
_mode = mode;
if (mode != MO_SIMPLE)
return MERR_STREAMING_NOT_AVAILABLE;
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.txt) ");
}
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);
_mode = 0;
}
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);
}
void MidiDriver_SEQ::pause(bool p)
{
if (_mode == MO_STREAMING) {
}
}
void MidiDriver_SEQ::set_stream_callback(void *param, StreamCallback *sc)
{
_stream_param = param;
_stream_proc = sc;
}
MidiDriver *MidiDriver_SEQ_create()
{
return new MidiDriver_SEQ();
}
#endif
#if defined(__APPLE__) || defined(macintosh)
// FIXME - this is for Mac OS X and Mac OS 9. It's not really possible
// to check for these *cleanly* without a configure script, though..
#if defined(MACOSX)
// On MacOSX, these are in a frameworks!
#include <QuickTime/QuickTimeComponents.h>
#include <QuickTime/QuickTimeMusic.h>
#else
#include <QuickTimeComponents.h>
#include <QuickTimeMusic.h>
#endif
/* QuickTime MIDI driver */
class MidiDriver_QT:public MidiDriver {
public:
int open(int mode);
void close();
void send(uint32 b);
void pause(bool p) { }
void set_stream_callback(void *param, StreamCallback *sc);
void setPitchBendRange (byte channel, uint range);
private:
NoteAllocator qtNoteAllocator;
NoteChannel qtNoteChannel[16];
NoteRequest simpleNoteRequest;
StreamCallback *_stream_proc;
void *_stream_param;
int _mode;
// Pitch bend tracking. Necessary since QTMA handles
// pitch bending so differently from MPU401.
uint16 _pitchbend [16];
byte _pitchbend_range [16];
};
void MidiDriver_QT::set_stream_callback(void *param, StreamCallback *sc)
{
_stream_param = param;
_stream_proc = sc;
}
int MidiDriver_QT::open(int mode)
{
ComponentResult qtErr = noErr;
int i;
qtNoteAllocator = NULL;
if (mode == MO_STREAMING)
return MERR_STREAMING_NOT_AVAILABLE;
_mode = mode;
for (i = 0; i < 15; i++)
qtNoteChannel[i] = NULL;
qtNoteAllocator = OpenDefaultComponent(kNoteAllocatorComponentType, 0);
if (qtNoteAllocator == NULL)
goto bail;
simpleNoteRequest.info.flags = 0;
*(short *)(&simpleNoteRequest.info.polyphony) = EndianS16_NtoB(15); // simultaneous tones
*(Fixed *) (&simpleNoteRequest.info.typicalPolyphony) = EndianU32_NtoB(0x00010000);
qtErr = NAStuffToneDescription(qtNoteAllocator, 1, &simpleNoteRequest.tone);
if (qtErr != noErr)
goto bail;
for (i = 0; i < 15; i++) {
qtErr = NANewNoteChannel(qtNoteAllocator, &simpleNoteRequest, &(qtNoteChannel[i]));
if ((qtErr != noErr) || (qtNoteChannel == NULL))
goto bail;
}
return 0;
bail:
error("Init QT failed %x %x %d\n", (int)qtNoteAllocator, (int)qtNoteChannel, (int)qtErr);
for (i = 0; i < 15; i++) {
if (qtNoteChannel[i] != NULL)
NADisposeNoteChannel(qtNoteAllocator, qtNoteChannel[i]);
qtNoteChannel[i] = NULL;
}
if (qtNoteAllocator != NULL) {
CloseComponent(qtNoteAllocator);
qtNoteAllocator = NULL;
}
return MERR_DEVICE_NOT_AVAILABLE;
}
void MidiDriver_QT::close()
{
_mode = 0;
for (int i = 0; i < 15; i++) {
if (qtNoteChannel[i] != NULL)
NADisposeNoteChannel(qtNoteAllocator, qtNoteChannel[i]);
qtNoteChannel[i] = NULL;
}
if (qtNoteAllocator != NULL) {
CloseComponent(qtNoteAllocator);
qtNoteAllocator = NULL;
}
}
void MidiDriver_QT::send(uint32 b)
{
if (_mode != MO_SIMPLE)
error("MidiDriver_QT:send called but driver is not in simple mode");
MusicMIDIPacket midPacket;
unsigned char *midiCmd = midPacket.data;
midPacket.length = 3;
midiCmd[3] = (b & 0xFF000000) >> 24;
midiCmd[2] = (b & 0x00FF0000) >> 16;
midiCmd[1] = (b & 0x0000FF00) >> 8;
midiCmd[0] = (b & 0x000000FF);
unsigned char chanID = midiCmd[0] & 0x0F;
switch (midiCmd[0] & 0xF0) {
case 0x80: // Note off
NAPlayNote(qtNoteAllocator, qtNoteChannel[chanID], midiCmd[1], 0);
break;
case 0x90: // Note on
NAPlayNote(qtNoteAllocator, qtNoteChannel[chanID], midiCmd[1], midiCmd[2]);
break;
case 0xB0: // Effect
switch (midiCmd[1]) {
case 0x01: // Modulation
NASetController(qtNoteAllocator, qtNoteChannel[chanID],
kControllerModulationWheel, midiCmd[2] << 8);
break;
case 0x07: // Volume
NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerVolume, midiCmd[2] * 300);
break;
case 0x0A: // Pan
NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerPan,
(midiCmd[2] << 1) + 0xFF);
break;
case 0x40: // Sustain on/off
NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerSustain, midiCmd[2]);
break;
case 0x5b: // ext effect depth
NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerReverb, midiCmd[2] << 8);
break;
case 0x5d: // chorus depth
NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerChorus, midiCmd[2] << 8);
break;
case 0x7b: // mode message all notes off
for (int i = 0; i < 128; i++)
NAPlayNote(qtNoteAllocator, qtNoteChannel[chanID], i, 0);
break;
case 0x64:
case 0x65:
case 0x06:
case 0x26:
// pitch bend changes - ignore those for now
break;
default:
error("Unknown MIDI effect: %08x\n", (int)b);
break;
}
break;
case 0xC0: // Program change
NASetInstrumentNumber(qtNoteAllocator, qtNoteChannel[chanID], midiCmd[1] + 1);
break;
case 0xE0:{ // Pitch bend
// QuickTime specifies pitchbend in semitones, using 8.8 fixed point values;
// but iMuse sends us the pitch bend data as 0-16383. which has to be mapped
// to +/- 12 semitones. Based on this, we first center the input data, then
// multiply it by a factor. If all was right, the factor would be 3/8, but for
// mysterious reasons the actual factor we have to use is more like 1/32 or 3/64.
// Maybe the QT docs are right, and
_pitchbend[chanID] = ((uint16) midiCmd[1] | (uint16) (midiCmd[2] << 7));
long theBend = ((long) _pitchbend[chanID] - 0x2000) * _pitchbend_range[chanID] / 32;
NASetController(qtNoteAllocator, qtNoteChannel[chanID], kControllerPitchBend, theBend);
}
break;
default:
error("Unknown Command: %08x\n", (int)b);
NASendMIDI(qtNoteAllocator, qtNoteChannel[chanID], &midPacket);
break;
}
}
void MidiDriver_QT::setPitchBendRange (byte channel, uint range)
{
if (_pitchbend_range[channel] == range)
return;
_pitchbend_range[channel] = range;
long theBend = _pitchbend[channel];
theBend = (theBend - 0x2000) * range / 32;
NASetController(qtNoteAllocator, qtNoteChannel[channel], kControllerPitchBend, theBend);
}
MidiDriver *MidiDriver_QT_create()
{
return new MidiDriver_QT();
}
#endif // __APPLE__ || macintosh
#ifdef __APPLE__
#include <AudioUnit/AudioUnit.h>
/* CoreAudio MIDI driver */
/* Based on code by Benjamin W. Zale */
class MidiDriver_CORE:public MidiDriver {
public:
MidiDriver_CORE():au_MusicDevice(NULL), au_output(NULL) {
} int open(int mode);
void close();
void send(uint32 b);
void pause(bool p);
void set_stream_callback(void *param, StreamCallback *sc);
void setPitchBendRange (byte channel, uint range) { }
private:
AudioUnit au_MusicDevice;
AudioUnit au_output;
StreamCallback *_stream_proc;
void *_stream_param;
int _mode;
};
void MidiDriver_CORE::set_stream_callback(void *param, StreamCallback *sc)
{
_stream_param = param;
_stream_proc = sc;
}
int MidiDriver_CORE::open(int mode)
{
if (au_output != NULL)
return MERR_ALREADY_OPEN;
if (mode == MO_STREAMING)
return MERR_STREAMING_NOT_AVAILABLE;
_mode = mode;
int err;
struct AudioUnitConnection auconnect;
ComponentDescription compdesc;
Component compid;
// Open the Music Device
compdesc.componentType = kAudioUnitComponentType;
compdesc.componentSubType = kAudioUnitSubType_MusicDevice;
compdesc.componentManufacturer = kAudioUnitID_DLSSynth;
compdesc.componentFlags = 0;
compdesc.componentFlagsMask = 0;
compid = FindNextComponent(NULL, &compdesc);
au_MusicDevice = (AudioUnit) OpenComponent(compid);
// open the output unit
au_output = (AudioUnit) OpenDefaultComponent(kAudioUnitComponentType, kAudioUnitSubType_Output);
// connect the units
auconnect.sourceAudioUnit = au_MusicDevice;
auconnect.sourceOutputNumber = 0;
auconnect.destInputNumber = 0;
err =
AudioUnitSetProperty(au_output, kAudioUnitProperty_MakeConnection, kAudioUnitScope_Input, 0,
(void *)&auconnect, sizeof(struct AudioUnitConnection));
// initialize the units
AudioUnitInitialize(au_MusicDevice);
AudioUnitInitialize(au_output);
// start the output
AudioOutputUnitStart(au_output);
#if 1
// Send initial pitch bend sensitivity values for +/- 12 semitones.
// For information on control change registered parameters,
// which includes the Pitch Bend sensitivity settings,
// visit http://www.midi.org/about-midi/table3.htm,
// Table 3a.
int chan;
for (chan = 0; chan < 16; ++chan) {
MusicDeviceMIDIEvent(au_MusicDevice, (0xB0 | chan), 101, 0, 0);
MusicDeviceMIDIEvent(au_MusicDevice, (0xB0 | chan), 100, 0, 0);
MusicDeviceMIDIEvent(au_MusicDevice, (0xB0 | chan), 6, 12, 0);
MusicDeviceMIDIEvent(au_MusicDevice, (0xB0 | chan), 38, 0, 0);
} // next for
#endif
return 0;
}
void MidiDriver_CORE::close()
{
// Stop the output
AudioOutputUnitStop(au_output);
// Cleanup
CloseComponent(au_output);
CloseComponent(au_MusicDevice);
_mode = 0;
}
void MidiDriver_CORE::send(uint32 b)
{
if (_mode != MO_SIMPLE)
error("MidiDriver_CORE:send called but driver is not in simple mode");
unsigned char first_byte, seccond_byte, status_byte;
status_byte = (b & 0x000000FF);
first_byte = (b & 0x0000FF00) >> 8;
seccond_byte = (b & 0x00FF0000) >> 16;
MusicDeviceMIDIEvent(au_MusicDevice, status_byte, first_byte, seccond_byte, 0);
}
void MidiDriver_CORE::pause(bool)
{
}
MidiDriver *MidiDriver_CORE_create()
{
return new MidiDriver_CORE();
}
#endif // __APPLE__
/* NULL driver */
class MidiDriver_NULL:public MidiDriver {
public:
int open(int mode);
void close() { }
void send(uint32 b) { }
void pause(bool p) { }
void set_stream_callback(void *param, StreamCallback *sc) { }
void setPitchBendRange (byte channel, uint range) { }
private:
};
int MidiDriver_NULL::open(int mode)
{
warning("Music not enabled - MIDI support selected with no MIDI driver available. Try Adlib");
return 0;
}
MidiDriver *MidiDriver_NULL_create()
{
return new MidiDriver_NULL();
}
/* Default (empty) property method */
uint32 MidiDriver::property(int prop, uint32 param)
{
return 0;
}
/* retrieve a string representation of an error code */
const char *MidiDriver::get_error_name(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];
}
#if defined(UNIX) && defined(USE_ALSA)
#include <alsa/asoundlib.h>
/*
* ALSA sequencer driver
* Mostly cut'n'pasted from Virtual Tiny Keyboard (vkeybd) by Takashi Iwai
* (you really rox, you know?)
*/
#if SND_LIB_MINOR >= 6
#define snd_seq_flush_output(x) snd_seq_drain_output(x)
#define snd_seq_set_client_group(x,name) /*nop */
#define my_snd_seq_open(seqp) snd_seq_open(seqp, "hw", SND_SEQ_OPEN_OUTPUT, 0)
#else
/* SND_SEQ_OPEN_OUT causes oops on early version of ALSA */
#define my_snd_seq_open(seqp) snd_seq_open(seqp, SND_SEQ_OPEN)
#endif
/*
* parse address string
*/
#define ADDR_DELIM ".:"
class MidiDriver_ALSA:public MidiDriver {
public:
MidiDriver_ALSA();
int open(int mode);
void close();
void send(uint32 b);
void pause(bool p);
void set_stream_callback(void *param, StreamCallback *sc);
void setPitchBendRange (byte channel, uint range) { }
private:
void send_event(int do_flush);
snd_seq_event_t ev;
StreamCallback *_stream_proc;
void *_stream_param;
int _mode;
snd_seq_t *seq_handle;
int seq_client, seq_port;
int my_client, my_port;
static int parse_addr(char *arg, int *client, int *port);
};
MidiDriver_ALSA::MidiDriver_ALSA():_mode(0), seq_handle(0), seq_client(0), seq_port(0), my_client(0),
my_port(0)
{
}
int MidiDriver_ALSA::parse_addr(char *arg, int *client, int *port)
{
char *p;
if (isdigit(*arg)) {
if ((p = strpbrk(arg, ADDR_DELIM)) == NULL)
return -1;
*client = atoi(arg);
*port = atoi(p + 1);
} else {
if (*arg == 's' || *arg == 'S') {
*client = SND_SEQ_ADDRESS_SUBSCRIBERS;
*port = 0;
} else
return -1;
}
return 0;
}
void MidiDriver_ALSA::send_event(int do_flush)
{
snd_seq_ev_set_direct(&ev);
snd_seq_ev_set_source(&ev, my_port);
snd_seq_ev_set_dest(&ev, seq_client, seq_port);
snd_seq_event_output(seq_handle, &ev);
if (do_flush)
snd_seq_flush_output(seq_handle);
}
int MidiDriver_ALSA::open(int mode)
{
char *var;
unsigned int caps;
if (_mode != 0)
return MERR_ALREADY_OPEN;
_mode = mode;
if (mode != MO_SIMPLE)
return MERR_STREAMING_NOT_AVAILABLE;
if (!(var = getenv("SCUMMVM_PORT"))) {
// default alsa port if none specified
if (parse_addr("65:0", &seq_client, &seq_port) < 0) {
error("Invalid port %s", var);
return -1;
}
}
else {
if (parse_addr(var, &seq_client, &seq_port) < 0) {
error("Invalid port %s", var);
return -1;
}
}
if (my_snd_seq_open(&seq_handle)) {
error("Can't open sequencer");
return -1;
}
my_client = snd_seq_client_id(seq_handle);
snd_seq_set_client_name(seq_handle, "SCUMMVM");
snd_seq_set_client_group(seq_handle, "input");
caps = SND_SEQ_PORT_CAP_READ;
if (seq_client == SND_SEQ_ADDRESS_SUBSCRIBERS)
caps = ~SND_SEQ_PORT_CAP_SUBS_READ;
my_port =
snd_seq_create_simple_port(seq_handle, "SCUMMVM", caps,
SND_SEQ_PORT_TYPE_MIDI_GENERIC | SND_SEQ_PORT_TYPE_APPLICATION);
if (my_port < 0) {
snd_seq_close(seq_handle);
error("Can't create port");
return -1;
}
if (seq_client != SND_SEQ_ADDRESS_SUBSCRIBERS) {
/* subscribe to MIDI port */
if (snd_seq_connect_to(seq_handle, my_port, seq_client, seq_port) < 0) {
snd_seq_close(seq_handle);
error("Can't subscribe to MIDI port (%d:%d)", seq_client, seq_port);
return -1;
}
}
printf("ALSA client initialised [%d:%d]\n", my_client, my_port);
return 0;
}
void MidiDriver_ALSA::close()
{
_mode = 0;
if (seq_handle)
snd_seq_close(seq_handle);
}
void MidiDriver_ALSA::send(uint32 b)
{
unsigned int midiCmd[4];
ev.type = SND_SEQ_EVENT_OSS;
midiCmd[3] = (b & 0xFF000000) >> 24;
midiCmd[2] = (b & 0x00FF0000) >> 16;
midiCmd[1] = (b & 0x0000FF00) >> 8;
midiCmd[0] = (b & 0x000000FF);
ev.data.raw32.d[0] = midiCmd[0];
ev.data.raw32.d[1] = midiCmd[1];
ev.data.raw32.d[2] = midiCmd[2];
unsigned char chanID = midiCmd[0] & 0x0F;
switch (midiCmd[0] & 0xF0) {
case 0x80:
snd_seq_ev_set_noteoff(&ev, chanID, midiCmd[1], midiCmd[2]);
send_event(1);
break;
case 0x90:
snd_seq_ev_set_noteon(&ev, chanID, midiCmd[1], midiCmd[2]);
send_event(1);
break;
case 0xB0:
/* is it this simple ? Wow... */
snd_seq_ev_set_controller(&ev, chanID, midiCmd[1], midiCmd[2]);
send_event(1);
break;
case 0xC0:
snd_seq_ev_set_pgmchange(&ev, chanID, midiCmd[1]);
send_event(0);
break;
case 0xE0:{
// long theBend = ((((long)midiCmd[1] + (long)(midiCmd[2] << 7))) - 0x2000) / 4;
// snd_seq_ev_set_pitchbend(&ev, chanID, theBend);
long theBend = ((long)midiCmd[1] + (long)(midiCmd[2] << 7)) - 0x2000;
snd_seq_ev_set_pitchbend(&ev, chanID, theBend);
send_event(1);
}
break;
default:
error("Unknown Command: %08x\n", (int)b);
/* I don't know if this works but, well... */
send_event(1);
break;
}
}
void MidiDriver_ALSA::pause(bool p)
{
if (_mode == MO_STREAMING) {
/* Err... and what? */
}
}
void MidiDriver_ALSA::set_stream_callback(void *param, StreamCallback *sc)
{
_stream_param = param;
_stream_proc = sc;
}
MidiDriver *MidiDriver_ALSA_create()
{
return new MidiDriver_ALSA();
}
#endif
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