mirror of
https://github.com/libretro/scummvm.git
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94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2003 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "queen/music.h"
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#include "queen/queen.h"
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#include "queen/resource.h"
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#include "sound/mididrv.h"
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#include "sound/midiparser.h"
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namespace Queen {
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Music::Music(MidiDriver *driver, QueenEngine *vm) : _isPlaying(false), _loop(false), _driver(driver) {
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_midi = MidiParser::createParser_SMF();
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_midi->setMidiDriver(_driver);
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int ret = _driver->open();
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if (ret)
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warning("MIDI Player init failed: \"%s\"", _driver->getErrorName(ret));
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_midi->setTimerRate(_driver->getBaseTempo());
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_driver->setTimerCallback(this, myTimerProc);
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if (vm->resource()->isDemo()) {
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_musicData = vm->resource()->loadFile("AQ8.RL", 0, NULL);
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_musicDataSize = vm->resource()->fileSize("AQ8.RL");
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} else {
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_musicData = vm->resource()->loadFile("AQ.RL", 0, NULL);
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_musicDataSize = vm->resource()->fileSize("AQ.RL");
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}
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_numSongs = READ_LE_UINT16(_musicData);
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}
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Music::~Music() {
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_driver->setTimerCallback(NULL, NULL);
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_midi->unloadMusic();
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_driver->close();
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delete _midi;
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delete[] _musicData;
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}
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void Music::playSong(uint16 songNum) {
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if (_loop)
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_midi->property(MidiParser::mpAutoLoop, 1);
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else
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_midi->property(MidiParser::mpAutoLoop, 0);
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_isPlaying = true;
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_midi->loadMusic(_musicData + songOffset(songNum), songLength(songNum));
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_midi->setTrack(0);
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}
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void Music::stopSong() {
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_isPlaying = false;
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_midi->unloadMusic();
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}
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void Music::myTimerProc(void *refCon) {
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Music *music = (Music *)refCon;
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if (music->_isPlaying)
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music->_midi->onTimer();
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}
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uint32 Music::songOffset(uint16 songNum) {
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uint16 offsLo = READ_LE_UINT16(_musicData + (songNum * 4) + 2);
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uint16 offsHi = READ_LE_UINT16(_musicData + (songNum * 4) + 4);
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return (offsHi << 4) | offsLo;
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}
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uint32 Music::songLength(uint16 songNum) {
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if (songNum < _numSongs)
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return (songOffset(songNum + 1) - songOffset(songNum));
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return (_musicDataSize - songOffset(songNum));
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}
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} // End of namespace Queen
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