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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.
*
*/
#include "sherlock/sherlock.h"
#include "sherlock/sound.h"
#include "common/config-manager.h"
#include "audio/audiostream.h"
#include "common/algorithm.h"
#include "audio/mixer.h"
#include "audio/decoders/raw.h"
namespace Sherlock {
Sound::Sound(SherlockEngine *vm, Audio::Mixer *mixer): _vm(vm), _mixer(mixer) {
_digitized = false;
_music = false;
_voices = 0;
_playingEpilogue = false;
_diskSoundPlaying = false;
_soundPlaying = false;
_soundIsOn = &_soundPlaying;
_curPriority = 0;
_soundOn = true;
_musicOn = true;
_speechOn = true;
_vm->_res->addToCache("MUSIC.LIB");
}
/**
* Saves sound-related settings
*/
void Sound::syncSoundSettings() {
_digitized = !ConfMan.getBool("mute");
_music = !ConfMan.getBool("mute") && !ConfMan.getBool("music_mute");
_voices = !ConfMan.getBool("mute") && !ConfMan.getBool("speech_mute") ? 1 : 0;
}
void Sound::loadSound(const Common::String &name, int priority) {
// No implementation required in ScummVM
}
char Sound::decodeSample(char sample, byte& prediction, int& step) {
char diff = ((sample & 0x07) << step);
if (sample & 0x08) {
if (prediction > diff)
prediction = prediction - ((sample & 0x07) << step);
else
prediction = 0;
} else {
if (prediction < 0xff - diff)
prediction = prediction + ((sample&0x07) << step);
else
prediction = 0xff;
}
if ((sample & 0x07) >= 5 && step < 3) {
step ++;
} else if ((sample & 0x07) == 0 && step > 0) {
step --;
}
return prediction;
}
bool Sound::playSound(const Common::String &name, WaitType waitType, int priority) {
stopSound();
Common::String filename = name;
if (!filename.contains('.'))
filename += ".SND";
Common::SeekableReadStream *stream = _vm->_res->load(filename);
if (!stream)
error("Unable to find sound file '%s'", filename.c_str());
stream->skip(2);
int size = stream->readUint32BE();
int rate = stream->readUint16BE();
byte *data = (byte *)malloc(size);
byte *ptr = data;
stream->read(ptr, size);
byte *decoded = (byte *)malloc((size - 1) * 2);
// +127 to eliminate the pop when the sound starts (signed vs unsigned PCM). Still does not help with the pop at the end
byte prediction = (ptr[0] & 0x0f) + 127;
int step = 0;
int counter = 0;
for(int i = 1; i < size; i++) {
decoded[counter++] = decodeSample((ptr[i]>>4)&0x0f, prediction, step);
decoded[counter++] = decodeSample((ptr[i]>>0)&0x0f, prediction, step);
}
free(data);
#if 0
// Debug : used to dump files
Common::DumpFile outFile;
outFile.open(filename);
outFile.write(decoded, (size - 2) * 2);
outFile.flush();
outFile.close();
#endif
Audio::AudioStream *audioStream = Audio::makeRawStream(decoded, (size - 2) * 2, rate, Audio::FLAG_UNSIGNED, DisposeAfterUse::YES);
_mixer->playStream(Audio::Mixer::kPlainSoundType, &_effectsHandle, audioStream, -1, Audio::Mixer::kMaxChannelVolume);
_soundPlaying = true;
_curPriority = priority;
if (waitType == WAIT_RETURN_IMMEDIATELY) {
_diskSoundPlaying = true;
return true;
}
bool retval = true;
do {
_vm->_events->pollEvents();
g_system->delayMillis(10);
if ((waitType == WAIT_KBD_OR_FINISH) && _vm->_events->kbHit()) {
retval = false;
break;
}
} while (!_vm->shouldQuit() && _mixer->isSoundHandleActive(_effectsHandle));
_soundPlaying = false;
_mixer->stopHandle(_effectsHandle);
return retval;
}
void Sound::playLoadedSound(int bufNum, WaitType waitType) {
if (_mixer->isSoundHandleActive(_effectsHandle) && (_curPriority > _vm->_scene->_sounds[bufNum]._priority))
return;
stopSound();
playSound(_vm->_scene->_sounds[bufNum]._name, waitType, _vm->_scene->_sounds[bufNum]._priority);
return;
}
void Sound::freeLoadedSounds() {
// As sounds are played with DisposeAfterUse::YES, stopping the sounds also
// frees them
stopSound();
}
void Sound::stopSound() {
_mixer->stopHandle(_effectsHandle);
}
void Sound::playMusic(const Common::String &name) {
// TODO
warning("Sound::playMusic %s", name.c_str());
Common::SeekableReadStream *stream = _vm->_res->load(name, "MUSIC.LIB");
byte *data = new byte[stream->size()];
byte *ptr = data;
stream->read(ptr, stream->size());
Common::DumpFile outFile;
outFile.open(name + ".RAW");
outFile.write(data, stream->size());
outFile.flush();
outFile.close();
delete[] data;
stopMusic();
startSong();
}
void Sound::stopMusic() {
// TODO
warning("TODO: Sound::stopMusic");
}
int Sound::loadSong(int songNumber) {
// TODO
warning("TODO: Sound::loadSong");
return 0;
}
void Sound::startSong() {
// TODO
warning("TODO: Sound::startSong");
}
void Sound::freeSong() {
// TODO
warning("TODO: Sound::freeSong");
}
void Sound::stopSndFuncPtr(int v1, int v2) {
// TODO
warning("TODO: Sound::stopSndFuncPtr");
}
void Sound::waitTimerRoland(uint time) {
// TODO
warning("TODO: Sound::waitTimerRoland");
}
void Sound::freeDigiSound() {
delete[] _digiBuf;
_digiBuf = nullptr;
_diskSoundPlaying = false;
_soundPlaying = false;
}
} // End of namespace Sherlock
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