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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 "audio/audiostream.h"
#include "audio/mixer.h"
#include "audio/decoders/raw.h"
#include "toltecs/toltecs.h"
#include "toltecs/resource.h"
#include "toltecs/segmap.h"
#include "toltecs/sound.h"
namespace Toltecs {
Sound::Sound(ToltecsEngine *vm) : _vm(vm) {
for (int i = 0; i < kMaxChannels; i++) {
clearChannel(i);
}
}
Sound::~Sound() {
}
void Sound::clearChannel(int channel) {
channels[channel].type = kChannelTypeEmpty;
channels[channel].resIndex = -1;
channels[channel].volume = 0;
channels[channel].panning = 0;
}
void Sound::playSpeech(int16 resIndex) {
debug(0, "playSpeech(%d)", resIndex);
if (_vm->_cfgVoices)
internalPlaySound(resIndex, kChannelTypeSpeech, 50 /*TODO*/, 0);
}
void Sound::playSound(int16 resIndex, int16 type, int16 volume) {
debug(0, "playSound(%d, %d, %d)", resIndex, type, volume);
internalPlaySound(resIndex, type, volume, 0);
}
void Sound::playSoundAtPos(int16 resIndex, int16 x, int16 y) {
debug(0, "playSoundAtPos(%d, %d, %d)", resIndex, x, y);
int16 volume = 50 + ABS(_vm->_segmap->getScalingAtPoint(x, y)) / 2;
int16 panning = 0, deltaX = 0;
if (_vm->_cameraX > x)
deltaX = _vm->_cameraX - x;
else if (_vm->_cameraX + 640 < x)
deltaX = x - (_vm->_cameraX + 640);
if (deltaX > 600)
deltaX = 600;
volume = ((100 - deltaX / 6) * volume) / 100;
if (_vm->_cameraX + 320 != x) {
panning = CLIP(x - (_vm->_cameraX + 320), -381, 381) / 3;
}
internalPlaySound(resIndex, 1, volume, panning);
}
void Sound::internalPlaySound(int16 resIndex, int16 type, int16 volume, int16 panning) {
// Change the game's sound volume (0 - 100) to Scummvm's scale (0 - 255)
volume = (volume == -1) ? 255 : volume * 255 / 100;
if (resIndex == -1) {
// Stop all sounds
_vm->_mixer->stopAll();
_vm->_screen->keepTalkTextItemsAlive();
for (int i = 0; i < kMaxChannels; i++) {
clearChannel(i);
}
} else if (type == -2) {
// Stop sounds with specified resIndex
for (int i = 0; i < kMaxChannels; i++) {
if (channels[i].resIndex == resIndex) {
_vm->_mixer->stopHandle(channels[i].handle);
clearChannel(i);
}
}
} else {
if (type == kChannelTypeSpeech) {
// Stop speech and play new sound
stopSpeech();
}
// Play new sound in empty channel
int freeChannel = -1;
for (int i = 0; i < kMaxChannels; i++) {
if (channels[i].type == kChannelTypeEmpty || !_vm->_mixer->isSoundHandleActive(channels[i].handle)) {
freeChannel = i;
break;
}
}
// If all channels are in use no new sound will be played
if (freeChannel >= 0) {
Resource *soundResource = _vm->_res->load(resIndex);
Audio::AudioStream *stream = Audio::makeLoopingAudioStream(
Audio::makeRawStream(soundResource->data,
soundResource->size, 22050, Audio::FLAG_UNSIGNED,
DisposeAfterUse::NO),
type == kChannelTypeBackground ? 0 : 1);
channels[freeChannel].type = type;
channels[freeChannel].resIndex = resIndex;
channels[freeChannel].volume = volume;
channels[freeChannel].panning = panning;
Audio::Mixer::SoundType soundType = getScummVMSoundType((SoundChannelType)type);
_vm->_mixer->playStream(soundType, &channels[freeChannel].handle,
stream, -1, volume, panning);
} // if (freeChannel >= 0)
} // resIndex
}
void Sound::updateSpeech() {
for (int i = 0; i < kMaxChannels; i++) {
if (channels[i].type == kChannelTypeSpeech && _vm->_mixer->isSoundHandleActive(channels[i].handle)) {
_vm->_screen->keepTalkTextItemsAlive();
break;
}
}
}
void Sound::stopSpeech() {
for (int i = 0; i < kMaxChannels; i++) {
if (channels[i].type == kChannelTypeSpeech) {
_vm->_mixer->stopHandle(channels[i].handle);
_vm->_screen->keepTalkTextItemsAlive();
clearChannel(i);
}
}
}
void Sound::stopAll() {
for (int i = 0; i < kMaxChannels; i++) {
_vm->_mixer->stopHandle(channels[i].handle);
_vm->_screen->keepTalkTextItemsAlive();
clearChannel(i);
}
}
void Sound::saveState(Common::WriteStream *out) {
for (int i = 0; i < kMaxChannels; i++) {
out->writeSint16LE(channels[i].type);
out->writeSint16LE(channels[i].resIndex);
out->writeSint16LE(channels[i].volume);
out->writeSint16LE(channels[i].panning);
}
}
void Sound::loadState(Common::ReadStream *in, int version) {
for (int i = 0; i < kMaxChannels; i++) {
channels[i].type = in->readSint16LE();
channels[i].resIndex = in->readSint16LE();
if (version < 4) {
channels[i].volume = (channels[i].type == kChannelTypeBackground) ? 50 : 100;
channels[i].panning = 0;
} else {
channels[i].volume = in->readSint16LE();
channels[i].panning = in->readSint16LE();
}
if (channels[i].type != kChannelTypeEmpty) {
Resource *soundResource = _vm->_res->load(channels[i].resIndex);
Audio::AudioStream *stream = Audio::makeLoopingAudioStream(
Audio::makeRawStream(soundResource->data,
soundResource->size, 22050, Audio::FLAG_UNSIGNED,
DisposeAfterUse::NO),
channels[i].type == kChannelTypeBackground ? 0 : 1);
Audio::Mixer::SoundType soundType = getScummVMSoundType((SoundChannelType)channels[i].type);
_vm->_mixer->playStream(soundType, &channels[i].handle,
stream, -1, channels[i].volume, channels[i].panning);
}
}
}
Audio::Mixer::SoundType Sound::getScummVMSoundType(SoundChannelType type) const {
switch (type) {
case kChannelTypeBackground:
case kChannelTypeSfx:
return Audio::Mixer::kSFXSoundType;
case kChannelTypeSpeech:
return Audio::Mixer::kSpeechSoundType;
break;
default:
return Audio::Mixer::kSFXSoundType;
break;
}
}
} // End of namespace Toltecs
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