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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001-2005 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.
*
* $Header$
*/
#include "stdafx.h"
#include "common/scummsys.h"
#ifdef USE_MT32EMU
#include "sound/softsynth/mt32/mt32emu.h"
#include "sound/softsynth/emumidi.h"
#include "sound/mpu401.h"
#include "common/util.h"
#include "common/file.h"
#include "common/config-manager.h"
#include "common/system.h"
#include "graphics/fontman.h"
#include "graphics/surface.h"
class MidiChannel_MT32 : public MidiChannel_MPU401 {
void effectLevel(byte value) { }
void chorusLevel(byte value) { }
};
class MidiDriver_MT32 : public MidiDriver_Emulated {
private:
PlayingSoundHandle _handle;
MidiChannel_MT32 _midiChannels[16];
uint16 _channelMask;
MT32Emu::Synth *_synth;
int _outputRate;
protected:
void generateSamples(int16 *buf, int len);
public:
bool _initialising;
MidiDriver_MT32(SoundMixer *mixer);
virtual ~MidiDriver_MT32();
int open();
void close();
void send(uint32 b);
void setPitchBendRange (byte channel, uint range);
void sysEx(byte *msg, uint16 length);
uint32 property(int prop, uint32 param);
MidiChannel *allocateChannel();
MidiChannel *getPercussionChannel();
// AudioStream API
bool isStereo() const { return true; }
int getRate() const { return _outputRate; }
};
typedef File SFile;
class MT32File: public MT32Emu::File {
SFile file;
public:
bool open(const char *filename, OpenMode mode) {
SFile::AccessMode accessMode = mode == OpenMode_read ? SFile::kFileReadMode : SFile::kFileWriteMode;
return file.open(filename, accessMode);
}
void close() {
return file.close();
}
size_t read(void *in, size_t size) {
return file.read(in, size);
}
bool readLine(char *in, size_t size) {
return file.gets(in, size) != NULL;
}
bool readBit8u(MT32Emu::Bit8u *in) {
byte b = file.readByte();
if (file.eof())
return false;
*in = b;
return true;
}
size_t write(const void *in, size_t size) {
return file.write(in, size);
}
bool writeBit8u(MT32Emu::Bit8u out) {
file.writeByte(out);
return !file.ioFailed();
}
bool isEOF() {
return file.eof();
}
};
static int eatSystemEvents() {
OSystem::Event event;
while (g_system->pollEvent(event)) {
switch (event.type) {
case OSystem::EVENT_QUIT:
return 1;
default:
break;
}
}
return 0;
}
static void drawProgress(float progress) {
const Graphics::Font &font(*FontMan.getFontByUsage(Graphics::FontManager::kOSDFont));
Graphics::Surface surf;
uint32 borderColor = 0x2;
uint32 fillColor = 0x4;
surf.w = g_system->getWidth() / 7 * 5;
surf.h = font.getFontHeight();
int x = g_system->getWidth() / 7;
int y = g_system->getHeight() / 2 - surf.h / 2;
surf.pitch = surf.w;
surf.bytesPerPixel = 1;
surf.pixels = calloc(surf.w, surf.h);
Common::Rect r(surf.w, surf.h);
surf.frameRect(r, borderColor);
r.grow(-1);
r.right = r.left + (uint16)(r.width() * progress);
surf.fillRect(r, fillColor);
g_system->copyRectToScreen((byte *)surf.pixels, surf.pitch, x, y, surf.w, surf.h);
g_system->updateScreen();
free(surf.pixels);
}
static void drawMessage(int offset, const Common::String &text) {
const Graphics::Font &font(*FontMan.getFontByUsage(Graphics::FontManager::kOSDFont));
Graphics::Surface surf;
uint32 color = 0x2;
surf.w = g_system->getWidth();
surf.h = font.getFontHeight();
surf.pitch = surf.w;
surf.bytesPerPixel = 1;
surf.pixels = calloc(surf.w, surf.h);
font.drawString(&surf, text, 0, 0, surf.w, color, Graphics::kTextAlignCenter);
int y = g_system->getHeight() / 2 - font.getFontHeight() / 2 + offset * (font.getFontHeight() + 1);
g_system->copyRectToScreen((byte *)surf.pixels, surf.pitch, 0, y, surf.w, surf.h);
g_system->updateScreen();
free(surf.pixels);
}
static MT32Emu::File *MT32_OpenFile(void *userData, const char *filename, MT32Emu::File::OpenMode mode) {
MT32File *file = new MT32File();
if (!file->open(filename, mode)) {
delete file;
return NULL;
}
return file;
}
static void MT32_PrintDebug(void *userData, const char *fmt, va_list list) {
char buf[512];
if (((MidiDriver_MT32 *)userData)->_initialising) {
vsprintf(buf, fmt, list);
buf[70] = 0; // Truncate to a reasonable length
drawMessage(1, buf);
}
//vdebug(0, fmt, list); // FIXME: Use a higher debug level
}
static int MT32_Report(void *userData, MT32Emu::ReportType type, const void *reportData) {
switch(type) {
case MT32Emu::ReportType_lcdMessage:
g_system->displayMessageOnOSD((const char *)reportData);
break;
case MT32Emu::ReportType_errorControlROM:
error("Failed to load MT32_CONTROL.ROM");
break;
case MT32Emu::ReportType_errorPCMROM:
error("Failed to load MT32_PCM.ROM");
break;
case MT32Emu::ReportType_progressInit:
if (((MidiDriver_MT32 *)userData)->_initialising) {
drawProgress(*((const float *)reportData));
return eatSystemEvents();
}
break;
default:
break;
}
return 0;
}
////////////////////////////////////////
//
// MidiDriver_MT32
//
////////////////////////////////////////
MidiDriver_MT32::MidiDriver_MT32(SoundMixer *mixer) : MidiDriver_Emulated(mixer) {
_channelMask = 0xFFFF; // Permit all 16 channels by default
uint i;
for (i = 0; i < ARRAYSIZE(_midiChannels); ++i) {
_midiChannels[i].init(this, i);
}
_synth = NULL;
// A higher baseFreq reduces the length used in generateSamples(),
// and means that the timer callback will be called more often.
// That results in more accurate timing.
_baseFreq = 10000;
// Unfortunately bugs in the emulator cause inaccurate tuning
// at rates other than 32KHz, thus we produce data at 32KHz and
// rely on SoundMixer to convert.
_outputRate = 32000; //_mixer->getOutputRate();
_initialising = false;
}
MidiDriver_MT32::~MidiDriver_MT32() {
if (_synth != NULL)
delete _synth;
}
int MidiDriver_MT32::open() {
MT32Emu::SynthProperties prop;
if (_isOpen)
return MERR_ALREADY_OPEN;
MidiDriver_Emulated::open();
memset(&prop, 0, sizeof(prop));
prop.sampleRate = getRate();
prop.useReverb = true;
prop.useDefaultReverb = false;
prop.reverbType = 0;
prop.reverbTime = 5;
prop.reverbLevel = 3;
prop.userData = this;
prop.printDebug = MT32_PrintDebug;
prop.report = MT32_Report;
prop.openFile = MT32_OpenFile;
_synth = new MT32Emu::Synth();
_initialising = true;
const byte dummy_palette[] = {
0, 0, 0, 0,
0, 0, 171, 0,
0, 171, 0, 0,
0, 171, 171, 0,
171, 0, 0, 0
};
g_system->setPalette(dummy_palette, 0, 5);
drawMessage(-1, "Initialising MT-32 Emulator");
if (!_synth->open(prop))
return MERR_DEVICE_NOT_AVAILABLE;
_initialising = false;
g_system->clearScreen();
g_system->updateScreen();
_mixer->playInputStream(SoundMixer::kSFXSoundType, &_handle, this, -1, 255, 0, false, true);
return 0;
}
void MidiDriver_MT32::send(uint32 b) {
_synth->playMsg(b);
}
void MidiDriver_MT32::setPitchBendRange(byte channel, uint range) {
if (range > 24) {
printf("setPitchBendRange() called with range > 24: %d", range);
}
byte benderRangeSysex[9];
benderRangeSysex[0] = 0x41; // Roland
benderRangeSysex[1] = channel;
benderRangeSysex[2] = 0x16; // MT-32
benderRangeSysex[3] = 0x12; // Write
benderRangeSysex[4] = 0x00;
benderRangeSysex[5] = 0x00;
benderRangeSysex[6] = 0x04;
benderRangeSysex[7] = (byte)range;
benderRangeSysex[8] = MT32Emu::Synth::calcSysexChecksum(&benderRangeSysex[4], 4, 0);
sysEx(benderRangeSysex, 9);
}
void MidiDriver_MT32::sysEx(byte *msg, uint16 length) {
if (msg[0] == 0xf0) {
_synth->playSysex(msg, length);
} else {
_synth->playSysexWithoutFraming(msg, length);
}
}
void MidiDriver_MT32::close() {
if (!_isOpen)
return;
_isOpen = false;
// Detach the player callback handler
setTimerCallback(NULL, NULL);
// Detach the mixer callback handler
_mixer->stopHandle(_handle);
_synth->close();
delete _synth;
_synth = NULL;
}
void MidiDriver_MT32::generateSamples(int16 *data, int len) {
_synth->render(data, len);
}
uint32 MidiDriver_MT32::property(int prop, uint32 param) {
switch (prop) {
case PROP_CHANNEL_MASK:
_channelMask = param & 0xFFFF;
return 1;
}
return 0;
}
MidiChannel *MidiDriver_MT32::allocateChannel() {
MidiChannel_MT32 *chan;
uint i;
for (i = 0; i < ARRAYSIZE(_midiChannels); ++i) {
if (i == 9 || !(_channelMask & (1 << i)))
continue;
chan = &_midiChannels[i];
if (chan->allocate()) {
return chan;
}
}
return NULL;
}
MidiChannel *MidiDriver_MT32::getPercussionChannel() {
return &_midiChannels[9];
}
// This code should be used when calling the timer callback from the mixer thread is undesirable.
// Note that it results in less accurate timing.
#if 0
class MidiEvent_MT32 {
public:
MidiEvent_MT32 *_next;
uint32 _msg; // 0xFFFFFFFF indicates a sysex message
byte *_data;
uint32 _len;
MidiEvent_MT32(uint32 msg, byte *data, uint32 len) {
_msg = msg;
if (len > 0) {
_data = new byte[len];
memcpy(_data, data, len);
}
_len = len;
_next = NULL;
}
MidiEvent_MT32() {
if (_len > 0)
delete _data;
}
};
class MidiDriver_ThreadedMT32 : public MidiDriver_MT32 {
private:
OSystem::Mutex _eventMutex;
MidiEvent_MT32 *_events;
Timer::TimerProc _timer_proc;
void pushMidiEvent(MidiEvent_MT32 *event);
MidiEvent_MT32 *popMidiEvent();
protected:
void send(uint32 b);
void sysEx(byte *msg, uint16 length);
public:
MidiDriver_ThreadedMT32(SoundMixer *mixer);
void onTimer();
void close();
void setTimerCallback(void *timer_param, Timer::TimerProc timer_proc);
};
MidiDriver_ThreadedMT32::MidiDriver_ThreadedMT32(SoundMixer *mixer) : MidiDriver_MT32(mixer) {
_events = NULL;
_timer_proc = NULL;
}
void MidiDriver_ThreadedMT32::close() {
MidiDriver_MT32::close();
while ((popMidiEvent() != NULL)) {
// Just eat any leftover events
}
}
void MidiDriver_ThreadedMT32::setTimerCallback(void *timer_param, Timer::TimerProc timer_proc) {
if (!_timer_proc || !timer_proc) {
if (_timer_proc)
g_timer->removeTimerProc(_timer_proc);
_timer_proc = timer_proc;
if (timer_proc)
g_timer->installTimerProc(timer_proc, getBaseTempo(), timer_param);
}
}
void MidiDriver_ThreadedMT32::pushMidiEvent(MidiEvent_MT32 *event) {
Common::StackLock lock(_eventMutex);
if (_events == NULL) {
_events = event;
} else {
MidiEvent_MT32 *last = _events;
while (last->_next != NULL)
last = last->_next;
last->_next = event;
}
}
MidiEvent_MT32 *MidiDriver_ThreadedMT32::popMidiEvent() {
Common::StackLock lock(_eventMutex);
MidiEvent_MT32 *event;
event = _events;
if (event != NULL)
_events = event->_next;
return event;
}
void MidiDriver_ThreadedMT32::send(uint32 b) {
MidiEvent_MT32 *event = new MidiEvent_MT32(b, NULL, 0);
pushMidiEvent(event);
}
void MidiDriver_ThreadedMT32::sysEx(byte *msg, uint16 length) {
MidiEvent_MT32 *event = new MidiEvent_MT32(0xFFFFFFFF, msg, length);
pushMidiEvent(event);
}
void MidiDriver_ThreadedMT32::onTimer() {
MidiEvent_MT32 *event;
while ((event = popMidiEvent()) != NULL) {
if (event->_msg == 0xFFFFFFFF) {
MidiDriver_MT32::sysEx(event->_data, event->_len);
} else {
MidiDriver_MT32::send(event->_msg);
}
delete event;
}
}
#endif
////////////////////////////////////////
//
// MidiDriver_MT32 factory
//
////////////////////////////////////////
MidiDriver *MidiDriver_MT32_create(SoundMixer *mixer) {
// HACK: It will stay here until engine plugin loader overhaul
if (ConfMan.hasKey("extrapath"))
File::addDefaultDirectory(ConfMan.get("extrapath"));
return new MidiDriver_MT32(mixer);
}
#endif
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