96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
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/* 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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*
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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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*
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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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#include "ags/music.h"
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#include "audio/midiparser.h"
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namespace AGS {
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Music *g_music;
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Music::Music(Audio::Mixer *mixer) :
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Audio::MidiPlayer(), _mixer(mixer) {
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g_music = this;
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Audio::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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_driver->setTimerCallback(this, &timerCallback);
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}
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}
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Music::~Music() {
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stop();
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g_music = nullptr;
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}
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void Music::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 Music::playMusic(const MIDI *midi, bool repeat) {
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stop();
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// Load MIDI resource data
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int midiMusicSize = midi->size();
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_midiData.resize(midi->size());
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Common::copy(&(*midi)[0], &(*midi)[0] + midi->size(), &_midiData[0]);
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MidiParser *parser = MidiParser::createParser_SMF();
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if (parser->loadMusic(&_midiData[0], 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 = repeat;
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_isPlaying = true;
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} else {
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delete parser;
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}
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}
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void Music::seek(size_t offset) {
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warning("TODO: Music::seek to offset %u", offset);
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}
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} // End of namespace AGS
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