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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.
*/
#include "common/scummsys.h"
#include "common/system.h"
#ifdef USE_MT32EMU
#include "audio/softsynth/mt32/mt32emu.h"
#include "audio/softsynth/emumidi.h"
#include "audio/musicplugin.h"
#include "audio/mpu401.h"
#include "common/config-manager.h"
#include "common/debug.h"
#include "common/error.h"
#include "common/events.h"
#include "common/file.h"
#include "common/system.h"
#include "common/util.h"
#include "common/archive.h"
#include "common/textconsole.h"
#include "common/translation.h"
#include "graphics/fontman.h"
#include "graphics/surface.h"
#include "graphics/pixelformat.h"
#include "graphics/palette.h"
#include "graphics/font.h"
class MidiChannel_MT32 : public MidiChannel_MPU401 {
void effectLevel(byte value) { }
void chorusLevel(byte value) { }
};
class MidiDriver_MT32 : public MidiDriver_Emulated {
private:
MidiChannel_MT32 _midiChannels[16];
uint16 _channelMask;
MT32Emu::Synth *_synth;
int _outputRate;
protected:
void generateSamples(int16 *buf, int len);
public:
bool _initializing;
MidiDriver_MT32(Audio::Mixer *mixer);
virtual ~MidiDriver_MT32();
int open();
void close();
void send(uint32 b);
void setPitchBendRange (byte channel, uint range);
void sysEx(const 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; }
};
class MT32File : public MT32Emu::File {
Common::File _in;
Common::DumpFile _out;
public:
bool open(const char *filename, OpenMode mode) {
if (mode == OpenMode_read)
return _in.open(filename);
else
return _out.open(filename);
}
void close() {
_in.close();
_out.close();
}
size_t read(void *in, size_t size) {
return _in.read(in, size);
}
bool readBit8u(MT32Emu::Bit8u *in) {
byte b = _in.readByte();
if (_in.eos())
return false;
*in = b;
return true;
}
size_t write(const void *in, size_t size) {
return _out.write(in, size);
}
bool writeBit8u(MT32Emu::Bit8u out) {
_out.writeByte(out);
return !_out.err();
}
bool isEOF() {
return _in.isOpen() && _in.eos();
}
};
static int eatSystemEvents() {
Common::Event event;
Common::EventManager *eventMan = g_system->getEventManager();
while (eventMan->pollEvent(event)) {
switch (event.type) {
case Common::EVENT_QUIT:
return 1;
default:
break;
}
}
return 0;
}
static void drawProgress(float progress) {
const Graphics::Font &font(*FontMan.getFontByUsage(Graphics::FontManager::kOSDFont));
Graphics::Surface *screen = g_system->lockScreen();
assert(screen);
assert(screen->pixels);
Graphics::PixelFormat screenFormat = g_system->getScreenFormat();
int16 w = g_system->getWidth() / 7 * 5;
int16 h = font.getFontHeight();
int16 x = g_system->getWidth() / 7;
int16 y = g_system->getHeight() / 2 - h / 2;
Common::Rect r(x, y, x + w, y + h);
uint32 col;
if (screenFormat.bytesPerPixel > 1)
col = screenFormat.RGBToColor(0, 171, 0);
else
col = 1;
screen->frameRect(r, col);
r.grow(-1);
r.setWidth(uint16(progress * w));
if (screenFormat.bytesPerPixel > 1)
col = screenFormat.RGBToColor(171, 0, 0);
else
col = 2;
screen->fillRect(r, col);
g_system->unlockScreen();
g_system->updateScreen();
}
static void drawMessage(int offset, const Common::String &text) {
const Graphics::Font &font(*FontMan.getFontByUsage(Graphics::FontManager::kOSDFont));
Graphics::Surface *screen = g_system->lockScreen();
assert(screen);
assert(screen->pixels);
Graphics::PixelFormat screenFormat = g_system->getScreenFormat();
uint16 h = font.getFontHeight();
uint16 y = g_system->getHeight() / 2 - h / 2 + offset * (h + 1);
uint32 col;
if (screenFormat.bytesPerPixel > 1)
col = screenFormat.RGBToColor(0, 0, 0);
else
col = 0;
Common::Rect r(0, y, screen->w, y + h);
screen->fillRect(r, col);
if (screenFormat.bytesPerPixel > 1)
col = screenFormat.RGBToColor(0, 171, 0);
else
col = 1;
font.drawString(screen, text, 0, y, screen->w, col, Graphics::kTextAlignCenter);
g_system->unlockScreen();
g_system->updateScreen();
}
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) {
if (((MidiDriver_MT32 *)userData)->_initializing) {
char buf[512];
vsnprintf(buf, 512, 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)->_initializing) {
drawProgress(*((const float *)reportData));
return eatSystemEvents();
}
break;
case MT32Emu::ReportType_availableSSE:
debug(1, "MT32emu: SSE is available");
break;
case MT32Emu::ReportType_usingSSE:
debug(1, "MT32emu: using SSE");
break;
case MT32Emu::ReportType_available3DNow:
debug(1, "MT32emu: 3DNow! is available");
break;
case MT32Emu::ReportType_using3DNow:
debug(1, "MT32emu: using 3DNow!");
break;
default:
break;
}
return 0;
}
////////////////////////////////////////
//
// MidiDriver_MT32
//
////////////////////////////////////////
MidiDriver_MT32::MidiDriver_MT32(Audio::Mixer *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 Mixer to convert.
_outputRate = 32000; //_mixer->getOutputRate();
_initializing = false;
}
MidiDriver_MT32::~MidiDriver_MT32() {
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();
Graphics::PixelFormat screenFormat = g_system->getScreenFormat();
if (screenFormat.bytesPerPixel == 1) {
const byte dummy_palette[] = {
0, 0, 0, // background
0, 171, 0, // border, font
171, 0, 0 // fill
};
g_system->getPaletteManager()->setPalette(dummy_palette, 0, 3);
}
_initializing = true;
drawMessage(-1, _s("Initializing MT-32 Emulator"));
if (!_synth->open(prop))
return MERR_DEVICE_NOT_AVAILABLE;
_initializing = false;
if (screenFormat.bytesPerPixel > 1)
g_system->fillScreen(screenFormat.RGBToColor(0, 0, 0));
else
g_system->fillScreen(0);
g_system->updateScreen();
_mixer->playStream(Audio::Mixer::kSFXSoundType, &_mixerSoundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true);
return 0;
}
void MidiDriver_MT32::send(uint32 b) {
_synth->playMsg(b);
}
void MidiDriver_MT32::setPitchBendRange(byte channel, uint range) {
if (range > 24) {
warning("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(const 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(_mixerSoundHandle);
_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;
TimerManager::TimerProc _timer_proc;
void pushMidiEvent(MidiEvent_MT32 *event);
MidiEvent_MT32 *popMidiEvent();
protected:
void send(uint32 b);
void sysEx(const byte *msg, uint16 length);
public:
MidiDriver_ThreadedMT32(Audio::Mixer *mixer);
void onTimer();
void close();
void setTimerCallback(void *timer_param, TimerManager::TimerProc timer_proc);
};
MidiDriver_ThreadedMT32::MidiDriver_ThreadedMT32(Audio::Mixer *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, TimerManager::TimerProc timer_proc) {
if (!_timer_proc || !timer_proc) {
if (_timer_proc)
_vm->_timer->removeTimerProc(_timer_proc);
_timer_proc = timer_proc;
if (timer_proc)
_vm->_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(const 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
// Plugin interface
class MT32EmuMusicPlugin : public MusicPluginObject {
public:
const char *getName() const {
return _s("MT-32 Emulator");
}
const char *getId() const {
return "mt32";
}
MusicDevices getDevices() const;
bool checkDevice(MidiDriver::DeviceHandle) const;
Common::Error createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle = 0) const;
};
MusicDevices MT32EmuMusicPlugin::getDevices() const {
MusicDevices devices;
devices.push_back(MusicDevice(this, "", MT_MT32));
return devices;
}
bool MT32EmuMusicPlugin::checkDevice(MidiDriver::DeviceHandle) const {
if (!((Common::File::exists("MT32_CONTROL.ROM") && Common::File::exists("MT32_PCM.ROM")) ||
(Common::File::exists("CM32L_CONTROL.ROM") && Common::File::exists("CM32L_PCM.ROM")))) {
warning("The MT-32 emulator requires the following 2 files (not bundled with ScummVM:\n either 'MT32_CONTROL.ROM' and 'MT32_PCM.ROM' or 'CM32L_CONTROL.ROM' and 'CM32L_PCM.ROM'");
return false;
}
return true;
}
Common::Error MT32EmuMusicPlugin::createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle) const {
if (ConfMan.hasKey("extrapath"))
SearchMan.addDirectory("extrapath", ConfMan.get("extrapath"));
*mididriver = new MidiDriver_MT32(g_system->getMixer());
return Common::kNoError;
}
//#if PLUGIN_ENABLED_DYNAMIC(MT32)
//REGISTER_PLUGIN_DYNAMIC(MT32, PLUGIN_TYPE_MUSIC, MT32EmuMusicPlugin);
//#else
REGISTER_PLUGIN_STATIC(MT32, PLUGIN_TYPE_MUSIC, MT32EmuMusicPlugin);
//#endif
#endif
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