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https://github.com/libretro/scummvm.git
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123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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// MIDI and digital music class
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#include "audio/audiostream.h"
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#include "audio/mididrv.h"
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#include "audio/midiparser.h"
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#include "common/config-manager.h"
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#include "common/debug.h"
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#include "common/file.h"
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#include "draci/draci.h"
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#include "draci/music.h"
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namespace Draci {
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MusicPlayer::MusicPlayer(const char *pathMask) : _pathMask(pathMask), _isGM(false), _track(-1) {
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MidiPlayer::createDriver();
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int ret = _driver->open();
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if (ret == 0) {
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if (_nativeMT32)
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_driver->sendMT32Reset();
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else
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_driver->sendGMReset();
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// TODO: Load cmf.ins with the instrument table. It seems that an
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// interface for such an operation is supported for AdLib. Maybe for
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// this card, setting instruments is necessary.
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_driver->setTimerCallback(this, &timerCallback);
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}
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}
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void MusicPlayer::sendToChannel(byte channel, uint32 b) {
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if (!_channelsTable[channel]) {
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_channelsTable[channel] = (channel == 9) ? _driver->getPercussionChannel() : _driver->allocateChannel();
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// If a new channel is allocated during the playback, make sure
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// its volume is correctly initialized.
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if (_channelsTable[channel])
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_channelsTable[channel]->volume(_channelsVolume[channel] * _masterVolume / 255);
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}
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if (_channelsTable[channel])
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_channelsTable[channel]->send(b);
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}
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void MusicPlayer::playSMF(int track, bool loop) {
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Common::StackLock lock(_mutex);
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if (_isPlaying && track == _track) {
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debugC(2, kDraciSoundDebugLevel, "Already plaing track %d", track);
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return;
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}
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stop();
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_isGM = true;
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// Load MIDI resource data
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Common::File musicFile;
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Common::String musicFileName = Common::String::format(_pathMask.c_str(), track);
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musicFile.open(musicFileName.c_str());
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if (!musicFile.isOpen()) {
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debugC(2, kDraciSoundDebugLevel, "Cannot open track %d", track);
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return;
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}
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int midiMusicSize = musicFile.size();
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free(_midiData);
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_midiData = (byte *)malloc(midiMusicSize);
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musicFile.read(_midiData, midiMusicSize);
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musicFile.close();
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MidiParser *parser = MidiParser::createParser_SMF();
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if (parser->loadMusic(_midiData, midiMusicSize)) {
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parser->setTrack(0);
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parser->setMidiDriver(this);
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parser->setTimerRate(_driver->getBaseTempo());
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parser->property(MidiParser::mpCenterPitchWheelOnUnload, 1);
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_parser = parser;
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syncVolume();
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_isLooping = loop;
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_isPlaying = true;
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_track = track;
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debugC(2, kDraciSoundDebugLevel, "Playing track %d", track);
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} else {
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debugC(2, kDraciSoundDebugLevel, "Cannot play track %d", track);
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delete parser;
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}
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}
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void MusicPlayer::stop() {
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Audio::MidiPlayer::stop();
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debugC(2, kDraciSoundDebugLevel, "Stopping track %d", _track);
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_track = -1;
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}
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} // End of namespace Draci
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