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/* 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.
*
*/
/*
* This code is based on Labyrinth of Time code with assistance of
*
* Copyright (c) 1993 Terra Nova Development
* Copyright (c) 2004 The Wyrmkeep Entertainment Co.
*
*/
#include "audio/decoders/raw.h"
#include "lab/lab.h"
#include "lab/anim.h"
#include "lab/eventman.h"
#include "lab/music.h"
#include "lab/resource.h"
namespace Lab {
#define SAMPLESPEED 15000
#define CLOWNROOM 123
#define DIMROOM 80
Music::Music(LabEngine *vm) : _vm(vm) {
_musicFile = nullptr;
_curRoomMusic = 1;
_storedPos = 0;
}
byte Music::getSoundFlags() {
byte soundFlags = Audio::FLAG_LITTLE_ENDIAN;
if (_vm->getPlatform() == Common::kPlatformWindows)
soundFlags |= Audio::FLAG_16BITS;
else if (_vm->getPlatform() == Common::kPlatformDOS)
soundFlags |= Audio::FLAG_UNSIGNED;
return soundFlags;
}
void Music::changeMusic(const Common::String filename, bool storeCurPos, bool seektoStoredPos) {
if (storeCurPos)
_storedPos = _musicFile->pos();
stopSoundEffect();
freeMusic();
_musicFile = _vm->_resource->openDataFile(filename);
if (seektoStoredPos)
_musicFile->seek(_storedPos);
Audio::SeekableAudioStream *audioStream = Audio::makeRawStream(_musicFile, SAMPLESPEED, getSoundFlags());
_vm->_mixer->playStream(Audio::Mixer::kMusicSoundType, &_musicHandle, new Audio::LoopingAudioStream(audioStream, 0));
}
void Music::playSoundEffect(uint16 sampleSpeed, uint32 length, bool loop, Common::File *dataFile) {
stopSoundEffect();
// NOTE: We need to use malloc(), cause this will be freed with free()
// by the music code
byte *soundData = (byte *)malloc(length);
dataFile->read(soundData, length);
Audio::SeekableAudioStream *audioStream = Audio::makeRawStream((const byte *)soundData, length, MAX<uint16>(sampleSpeed, 4000), getSoundFlags());
_vm->_mixer->playStream(Audio::Mixer::kSFXSoundType, &_sfxHandle, new Audio::LoopingAudioStream(audioStream, (loop) ? 0 : 1));
}
void Music::stopSoundEffect() {
if (isSoundEffectActive())
_vm->_mixer->stopHandle(_sfxHandle);
}
bool Music::isSoundEffectActive() const {
return _vm->_mixer->isSoundHandleActive(_sfxHandle);
}
void Music::freeMusic() {
_vm->_mixer->stopHandle(_musicHandle);
_vm->_mixer->stopHandle(_sfxHandle);
_musicFile = nullptr;
}
void Music::checkRoomMusic() {
if ((_curRoomMusic == _vm->_roomNum) || !_musicFile)
return;
if (_vm->_roomNum == CLOWNROOM) {
changeMusic("Music:Laugh", true, false);
} else if (_vm->_roomNum == DIMROOM) {
changeMusic("Music:Rm81", true, false);
} else if (_curRoomMusic == CLOWNROOM || _curRoomMusic == DIMROOM) {
if (_vm->getPlatform() != Common::kPlatformAmiga)
changeMusic("Music:Backgrou", false, true);
else
changeMusic("Music:Background", false, true);
}
_curRoomMusic = _vm->_roomNum;
}
bool Music::loadSoundEffect(const Common::String filename, bool loop, bool waitTillFinished) {
Common::File *file = _vm->_resource->openDataFile(filename, MKTAG('D', 'I', 'F', 'F'));
stopSoundEffect();
if (!file)
return false;
_vm->_anim->_doBlack = false;
readSound(waitTillFinished, loop, file);
return true;
}
void Music::readSound(bool waitTillFinished, bool loop, Common::File *file) {
uint32 magicBytes = file->readUint32LE();
if (magicBytes != 1219009121) {
warning("readSound: Bad signature, skipping");
return;
}
uint32 soundTag = file->readUint32LE();
uint32 soundSize = file->readUint32LE();
if (soundTag == 0)
file->skip(soundSize); // skip the header
else
return;
while (soundTag != 65535) {
_vm->updateEvents();
soundTag = file->readUint32LE();
soundSize = file->readUint32LE() - 8;
if ((soundTag == 30) || (soundTag == 31)) {
if (waitTillFinished) {
while (isSoundEffectActive()) {
_vm->updateEvents();
_vm->waitTOF();
}
}
file->skip(4);
uint16 sampleRate = file->readUint16LE();
file->skip(2);
playSoundEffect(sampleRate, soundSize, loop, file);
} else if (soundTag == 65535) {
if (waitTillFinished) {
while (isSoundEffectActive()) {
_vm->updateEvents();
_vm->waitTOF();
}
}
} else
file->skip(soundSize);
}
}
} // End of namespace Lab
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