/*
* libOPNMIDI is a free MIDI to WAV conversion library with OPN2 (YM2612) emulation
*
* MIDI parser and player (Original code from ADLMIDI): Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
* OPNMIDI Library and YM2612 support: Copyright (c) 2017-2018 Vitaly Novichkov <admin@wohlnet.ru>
*
* Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
* http://iki.fi/bisqwit/source/adlmidi.html
*
* 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 3 of the License, or
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "opnmidi_private.hpp"
#include "opnmidi_cvt.hpp"
#include "wopn/wopn_file.h"
bool OPNMIDIplay::LoadBank(const std::string &filename)
{
FileAndMemReader file;
file.openFile(filename.c_str());
return LoadBank(file);
}
bool OPNMIDIplay::LoadBank(const void *data, size_t size)
{
FileAndMemReader file;
file.openData(data, (size_t)size);
return LoadBank(file);
}
void cvt_OPNI_to_FMIns(opnInstMeta2 &ins, const OPN2_Instrument &in)
{
return cvt_generic_to_FMIns(ins, in);
}
void cvt_FMIns_to_OPNI(OPN2_Instrument &ins, const opnInstMeta2 &in)
{
cvt_FMIns_to_generic(ins, in);
}
bool OPNMIDIplay::LoadBank(FileAndMemReader &fr)
{
int err = 0;
WOPNFile *wopn = NULL;
char *raw_file_data = NULL;
size_t fsize;
if(!fr.isValid())
{
errorStringOut = "Custom bank: Invalid data stream!";
return false;
}
// Read complete bank file into the memory
fsize = fr.fileSize();
fr.seek(0, FileAndMemReader::SET);
// Allocate necessary memory block
raw_file_data = (char*)malloc(fsize);
if(!raw_file_data)
{
errorStringOut = "Custom bank: Out of memory before of read!";
return false;
}
fr.read(raw_file_data, 1, fsize);
// Parse bank file from the memory
wopn = WOPN_LoadBankFromMem((void*)raw_file_data, fsize, &err);
//Free the buffer no more needed
free(raw_file_data);
// Check for any erros
if(!wopn)
{
switch(err)
{
case WOPN_ERR_BAD_MAGIC:
errorStringOut = "Custom bank: Invalid magic!";
return false;
case WOPN_ERR_UNEXPECTED_ENDING:
errorStringOut = "Custom bank: Unexpected ending!";
return false;
case WOPN_ERR_INVALID_BANKS_COUNT:
errorStringOut = "Custom bank: Invalid banks count!";
return false;
case WOPN_ERR_NEWER_VERSION:
errorStringOut = "Custom bank: Version is newer than supported by this library!";
return false;
case WOPN_ERR_OUT_OF_MEMORY:
errorStringOut = "Custom bank: Out of memory!";
return false;
default:
errorStringOut = "Custom bank: Unknown error!";
return false;
}
}
m_synth.m_insBankSetup.volumeModel = wopn->volume_model;
m_synth.m_insBankSetup.lfoEnable = (wopn->lfo_freq & 8) != 0;
m_synth.m_insBankSetup.lfoFrequency = wopn->lfo_freq & 7;
m_setup.VolumeModel = OPNMIDI_VolumeModel_AUTO;
m_setup.lfoEnable = -1;
m_setup.lfoFrequency = -1;
m_synth.m_insBanks.clear();
uint16_t slots_counts[2] = {wopn->banks_count_melodic, wopn->banks_count_percussion};
WOPNBank *slots_src_ins[2] = { wopn->banks_melodic, wopn->banks_percussive };
for(size_t ss = 0; ss < 2; ss++)
{
for(size_t i = 0; i < slots_counts[ss]; i++)
{
size_t bankno = (slots_src_ins[ss][i].bank_midi_msb * 256) +
(slots_src_ins[ss][i].bank_midi_lsb) +
(ss ? size_t(OPN2::PercussionTag) : 0);
OPN2::Bank &bank = m_synth.m_insBanks[bankno];
for(int j = 0; j < 128; j++)
{
opnInstMeta2 &ins = bank.ins[j];
std::memset(&ins, 0, sizeof(opnInstMeta2));
WOPNInstrument &inIns = slots_src_ins[ss][i].ins[j];
cvt_generic_to_FMIns(ins, inIns);
}
}
}
applySetup();
WOPN_Free(wopn);
return true;
}
#ifndef OPNMIDI_DISABLE_MIDI_SEQUENCER
bool OPNMIDIplay::LoadMIDI_pre()
{
if(m_synth.m_insBanks.empty())
{
errorStringOut = "Bank is not set! Please load any instruments bank by using of adl_openBankFile() or adl_openBankData() functions!";
return false;
}
/**** Set all properties BEFORE starting of actial file reading! ****/
resetMIDI();
applySetup();
return true;
}
bool OPNMIDIplay::LoadMIDI_post()
{
MidiSequencer::FileFormat format = m_sequencer.getFormat();
if(format == MidiSequencer::Format_CMF)
{
errorStringOut = "OPNMIDI doesn't supports CMF, use ADLMIDI to play this file!";
/* As joke, why not to try implemented the converter of patches from OPL3 into OPN2? */
return false;
}
else if(format == MidiSequencer::Format_RSXX)
{
m_synth.m_musicMode = OPN2::MODE_RSXX;
m_synth.m_volumeScale = OPN2::VOLUME_Generic;
m_synth.m_numChips = 2;
}
else if(format == MidiSequencer::Format_IMF)
{
errorStringOut = "OPNMIDI doesn't supports IMF, use ADLMIDI to play this file!";
/* Same as for CMF */
return false;
}
m_setup.tick_skip_samples_delay = 0;
m_synth.reset(m_setup.emulator, m_setup.PCM_RATE, this); // Reset OPN2 chip
m_chipChannels.clear();
m_chipChannels.resize(m_synth.m_numChannels);
return true;
}
bool OPNMIDIplay::LoadMIDI(const std::string &filename)
{
FileAndMemReader file;
file.openFile(filename.c_str());
if(!LoadMIDI_pre())
return false;
if(!m_sequencer.loadMIDI(file))
{
errorStringOut = m_sequencer.getErrorString();
return false;
}
if(!LoadMIDI_post())
return false;
return true;
}
bool OPNMIDIplay::LoadMIDI(const void *data, size_t size)
{
FileAndMemReader file;
file.openData(data, size);
if(!LoadMIDI_pre())
return false;
if(!m_sequencer.loadMIDI(file))
{
errorStringOut = m_sequencer.getErrorString();
return false;
}
if(!LoadMIDI_post())
return false;
return true;
}
#endif //OPNMIDI_DISABLE_MIDI_SEQUENCER