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Diffstat (limited to 'engines/scumm/midiparser_eup.cpp')
| -rw-r--r-- | engines/scumm/midiparser_eup.cpp | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/engines/scumm/midiparser_eup.cpp b/engines/scumm/midiparser_eup.cpp deleted file mode 100644 index 592d43f7fe..0000000000 --- a/engines/scumm/midiparser_eup.cpp +++ /dev/null @@ -1,222 +0,0 @@ -/* 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. - * - * $URL$ - * $Id$ - * - */ - - -#include "sound/midiparser.h" -#include "sound/mididrv.h" -#include "common/util.h" - -namespace Scumm { - -/** - * The FM-TOWNS Euphony version of MidiParser. - */ -class MidiParser_EUP : public MidiParser { -protected: - byte _instruments[6][50]; // Two extra bytes for SysEx ID and channel # - byte *_instr_to_channel; - struct { - byte *enable; - int8 *channel; - int8 *volume; - int8 *transpose; - } _presets; - bool _loop; - byte _presend; // Tracks which startup implied events have been sent. - uint32 _base_tick; // Events times are relative to this base. - -protected: - void parseNextEvent (EventInfo &info); - void resetTracking(); - -public: - bool loadMusic (byte *data, uint32 size); -}; - - - -////////////////////////////////////////////////// -// -// MidiParser_EUP implementation -// -////////////////////////////////////////////////// - -void MidiParser_EUP::parseNextEvent (EventInfo &info) { - byte *pos = _position._play_pos; - - // FIXME: The presend is for sending init events - // that aren't actually in the stream. This would - // be for, e.g., instrument setup. Right now, we - // don't actually use the instruments specified - // in the music header. We're sending fixed GM - // program changes to get a reasonable "one-size- - // fits-all" sound until we actually support the - // FM synthesis capabilities of FM-TOWNS. - for (; _presend < 12; ++_presend) { - if (_instr_to_channel[_presend >> 1] >= 16) - continue; - info.start = pos; - info.delta = 0; - if (_presend & 1) { - byte *data = &_instruments[_presend >> 1][0]; - data[1] = _instr_to_channel[_presend >> 1]; - info.event = 0xF0; - info.ext.data = data; - info.length = 48; - } else { - info.event = 0xB0 | (_presend >> 1); - info.basic.param1 = 121; - info.basic.param2 = 0; - } - ++_presend; - return; - } - - while (true) { - byte cmd = *pos; - if ((cmd & 0xF0) == 0x90) { - byte preset = pos[1]; - byte channel = _presets.channel[preset]; - if (channel >= 16) - channel = cmd & 0x0F; - uint16 tick = (pos[2] | ((uint16) pos[3] << 7)) + _base_tick; - int note = (int) pos[4] + _presets.transpose[preset]; - int volume = (int) pos[5]; - // HACK: Loom-Towns distaff tracks seem to - // contain zero-volume note events, so change - // those to full volume. - if (!volume) - volume = 127; - volume += _presets.volume[preset]; - if (volume > 127) - volume = 127; - else if (volume < 0) - volume = 0; - pos += 6; - if (_presets.enable[preset]) { - uint16 duration = pos[1] | (pos[2] << 4); - info.start = pos; - uint32 last = _position._last_event_tick; - info.delta = (tick < last) ? 0 : (tick - last); - info.event = 0x90 | channel; - info.length = duration; - info.basic.param1 = note; - info.basic.param2 = volume; - pos += 6; - break; - } - pos += 6; - } else if (cmd == 0xF2) { - // This is a "measure marker" of sorts. - // It advances the "base time", to which - // all event times are relative. - _base_tick += (pos[3] << 7) | pos[2]; - pos += 6; - } else if (cmd == 0xF8) { - // TODO: Implement this. - pos += 6; - } else if (cmd == 0xFD || cmd == 0xFE) { - // End of track. - if (_loop && false) { - // TODO: Implement this. - } else { - info.start = pos; - uint32 last = _position._last_event_tick; - info.delta = (_base_tick < last) ? 0 : (_base_tick - last); - info.event = 0xFF; - info.length = 0; - info.ext.type = 0x2F; - info.ext.data = pos; - break; - } - } else { - error("Unknown Euphony music event 0x%02X", (int) cmd); - memset(&info, 0, sizeof(info)); - pos = 0; - break; - } - } - _position._play_pos = pos; -} - -bool MidiParser_EUP::loadMusic (byte *data, uint32 size) { - unloadMusic(); - byte *pos = data; - int i; - - if (memcmp(pos, "SO", 2)) { - error("'SO' header expected but found '%c%c' instead.", pos[0], pos[1]); - return false; - } - - byte numInstruments = pos[16]; - pos += 16 + 2; - for (i = 0; i < numInstruments; ++i) { - _instruments[i][0] = 0x7C; - memcpy (&_instruments[i][2], pos, 48); - pos += 48; - } - - // Load the prest pointers - _presets.enable = pos; - pos += 32; - _presets.channel = (int8 *) pos; - pos += 32; - _presets.volume = (int8 *) pos; - pos += 32; - _presets.transpose = (int8 *) pos; - pos += 32; - - pos += 8; // Unknown bytes - _instr_to_channel = pos; // Instrument-to-channel mapping - pos += 6; - pos += 4; // Skip the music size for now. - pos++; // Unknown byte - byte tempo = *pos++; - _loop = (*pos++ != 1); - pos++; // Unknown byte - - _num_tracks = 1; - _ppqn = 120; - _tracks[0] = pos; - - // Note that we assume the original data passed in - // will persist beyond this call, i.e. we do NOT - // copy the data to our own buffer. Take warning.... - resetTracking(); - setTempo (1000000 * 60 / tempo); - setTrack (0); - return true; -} - -void MidiParser_EUP::resetTracking() { - MidiParser::resetTracking(); - _presend = 0; - _base_tick = 0; -} - -MidiParser *MidiParser_createEUP() { return new MidiParser_EUP; } - -} // End of namespace Scumm |