mirror of
https://github.com/libretro/scummvm.git
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274 lines
6.6 KiB
C++
274 lines
6.6 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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*
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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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/*
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* This code is based on original Sfinx source code
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* Copyright (c) 1994-1997 Janus B. Wisniewski and L.K. Avalon
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*/
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#include "cge2/sound.h"
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#include "common/config-manager.h"
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#include "common/memstream.h"
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#include "audio/decoders/raw.h"
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#include "audio/audiostream.h"
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#include "cge2/cge2.h"
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namespace CGE2 {
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DataCk::DataCk(byte *buf, int bufSize) {
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_buf = buf;
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_ckSize = bufSize;
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}
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DataCk::~DataCk() {
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free(_buf);
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}
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Sound::Sound(CGE2Engine *vm) : _vm(vm) {
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_audioStream = nullptr;
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_soundRepeatCount = 1;
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open();
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}
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Sound::~Sound() {
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close();
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}
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void Sound::close() {
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_vm->_midiPlayer->killMidi();
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}
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void Sound::open() {
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setRepeat(1);
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if (_vm->_commandHandlerTurbo != nullptr)
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_vm->switchSay();
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play(Audio::Mixer::kSFXSoundType, _vm->_fx->load(99, 99));
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}
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void Sound::setRepeat(int16 count) {
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_soundRepeatCount = count;
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}
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int16 Sound::getRepeat() {
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return _soundRepeatCount;
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}
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void Sound::play(Audio::Mixer::SoundType soundType, DataCk *wav, int pan) {
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if (wav) {
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stop();
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_smpinf._saddr = &*(wav->addr());
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_smpinf._slen = (uint16)wav->size();
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_smpinf._span = pan;
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_smpinf._counter = getRepeat();
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sndDigiStart(&_smpinf, soundType);
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}
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}
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void Sound::sndDigiStart(SmpInfo *PSmpInfo, Audio::Mixer::SoundType soundType) {
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// Create an audio stream wrapper for sound
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Common::MemoryReadStream *stream = new Common::MemoryReadStream(PSmpInfo->_saddr,
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PSmpInfo->_slen, DisposeAfterUse::NO);
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_audioStream = Audio::makeWAVStream(stream, DisposeAfterUse::YES);
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// Decide which handle to use
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Audio::SoundHandle *handle = nullptr;
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switch (soundType) {
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case Audio::Mixer::kSFXSoundType:
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handle = &_sfxHandle;
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break;
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case Audio::Mixer::kSpeechSoundType:
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handle = &_speechHandle;
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break;
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default:
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error("Wrong sound type passed to sndDigiStart()");
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}
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// Start the new sound
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_vm->_mixer->playStream(soundType, handle,
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Audio::makeLoopingAudioStream(_audioStream, (uint)PSmpInfo->_counter));
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// CGE pan:
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// 8 = Center
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// Less = Left
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// More = Right
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_vm->_mixer->setChannelBalance(*handle, (int8)CLIP(((PSmpInfo->_span - 8) * 16), -127, 127));
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}
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void Sound::stop() {
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sndDigiStop(_sfxHandle);
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sndDigiStop(_speechHandle);
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_audioStream = nullptr;
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}
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void Sound::checkSoundHandles() {
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if (!_vm->_mixer->isSoundHandleActive(_speechHandle) && !_vm->_mixer->isSoundHandleActive(_sfxHandle))
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_smpinf._counter = 0;
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}
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void Sound::sndDigiStop(Audio::SoundHandle &handle) {
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if (_vm->_mixer->isSoundHandleActive(handle))
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_vm->_mixer->stopHandle(handle);
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}
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Fx::Fx(CGE2Engine *vm, int size) : _current(nullptr), _vm(vm) {
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}
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Fx::~Fx() {
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clear();
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}
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void Fx::clear() {
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if (_current)
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delete _current;
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_current = nullptr;
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}
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Common::String Fx::name(int ref, int sub) {
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const char *fxname = "%.2dfx%.2d.WAV";
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const char *subName = "%.2dfx%.2d?.WAV";
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const char *p = (sub) ? subName : fxname;
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Common::String filename = Common::String::format(p, ref >> 8, ref & 0xFF);
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if (sub)
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filename.setChar('@' + sub, 6);
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return filename;
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}
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bool Fx::exist(int ref, int sub) {
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return _vm->_resman->exist(name(ref, sub).c_str());
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}
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DataCk *Fx::load(int ref, int sub) {
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Common::String filename = name(ref, sub);
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EncryptedStream file(_vm, filename.c_str());
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clear();
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return (_current = loadWave(&file));
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}
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DataCk *Fx::loadWave(EncryptedStream *file) {
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byte *data = (byte *)malloc(file->size());
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if (!data)
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return 0;
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file->read(data, file->size());
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return new DataCk(data, file->size());
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}
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MusicPlayer::MusicPlayer(CGE2Engine *vm) : _vm(vm) {
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_data = nullptr;
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_isGM = false;
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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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_dataSize = -1;
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}
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MusicPlayer::~MusicPlayer() {
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killMidi();
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}
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void MusicPlayer::killMidi() {
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Audio::MidiPlayer::stop();
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free(_data);
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_data = nullptr;
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}
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void MusicPlayer::loadMidi(int ref) {
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if (_vm->_midiNotify != nullptr)
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(_vm->*_vm->_midiNotify)();
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// Work out the filename and check the given MIDI file exists
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Common::String filename = Common::String::format("%.2dSG%.2d.MID", ref >> 8, ref & 0xFF);
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if (!_vm->_resman->exist(filename.c_str()))
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return;
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// Stop any currently playing MIDI file
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killMidi();
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// Read in the data for the file
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EncryptedStream mid(_vm, filename.c_str());
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_dataSize = mid.size();
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_data = (byte *)malloc(_dataSize);
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mid.read(_data, _dataSize);
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// Start playing the music
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sndMidiStart();
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}
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void MusicPlayer::sndMidiStart() {
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_isGM = true;
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MidiParser *parser = MidiParser::createParser_SMF();
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if (parser->loadMusic(_data, _dataSize)) {
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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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// Al the tracks are supposed to loop
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_isLooping = true;
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_isPlaying = true;
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}
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}
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void MusicPlayer::send(uint32 b) {
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if (((b & 0xF0) == 0xC0) && !_isGM && !_nativeMT32) {
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b = (b & 0xFFFF00FF) | MidiDriver::_mt32ToGm[(b >> 8) & 0xFF] << 8;
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}
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Audio::MidiPlayer::send(b);
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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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} // End of namespace CGE2
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