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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 "common/scummsys.h"
#include "zvision/music_node.h"
#include "zvision/zvision.h"
#include "zvision/script_manager.h"
#include "zvision/render_manager.h"
#include "zvision/zork_raw.h"
#include "common/stream.h"
#include "common/file.h"
#include "audio/decoders/wave.h"
namespace ZVision {
MusicNode::MusicNode(ZVision *engine, uint32 key, Common::String &filename, bool loop, int8 volume)
: SideFX(engine, key, SIDEFX_AUDIO) {
_loop = loop;
_volume = volume;
_crossfade = false;
_crossfade_target = 0;
_crossfade_time = 0;
_attenuate = 0;
_pantrack = false;
_pantrack_X = 0;
Audio::RewindableAudioStream *audioStream;
if (filename.contains(".wav")) {
Common::File *file = new Common::File();
if (_engine->getSearchManager()->openFile(*file, filename)) {
audioStream = Audio::makeWAVStream(file, DisposeAfterUse::YES);
}
} else {
audioStream = makeRawZorkStream(filename, _engine);
}
_stereo = audioStream->isStereo();
if (_loop) {
Audio::LoopingAudioStream *loopingAudioStream = new Audio::LoopingAudioStream(audioStream, 0, DisposeAfterUse::YES);
_engine->_mixer->playStream(Audio::Mixer::kPlainSoundType, &_handle, loopingAudioStream, -1, _volume);
} else {
_engine->_mixer->playStream(Audio::Mixer::kPlainSoundType, &_handle, audioStream, -1, _volume);
}
if (_key != StateKey_NotSet)
_engine->getScriptManager()->setStateValue(_key, 1);
}
MusicNode::~MusicNode() {
_engine->_mixer->stopHandle(_handle);
if (_key != StateKey_NotSet)
_engine->getScriptManager()->setStateValue(_key, 2);
debug(1, "MusicNode: %d destroyed\n", _key);
}
void MusicNode::setPanTrack(int16 pos) {
if (!_stereo) {
_pantrack = true;
_pantrack_X = pos;
setVolume(_volume);
}
}
void MusicNode::unsetPanTrack() {
_pantrack = false;
setVolume(_volume);
}
void MusicNode::setFade(int32 time, uint8 target) {
_crossfade_target = target;
_crossfade_time = time;
_crossfade = true;
}
bool MusicNode::process(uint32 deltaTimeInMillis) {
if (! _engine->_mixer->isSoundHandleActive(_handle))
return stop();
else {
uint8 _newvol = _volume;
if (_crossfade) {
if (_crossfade_time > 0) {
if ((int32)deltaTimeInMillis > _crossfade_time)
deltaTimeInMillis = _crossfade_time;
_newvol += floor(((float)(_crossfade_target - _newvol) / (float)_crossfade_time)) * (float)deltaTimeInMillis;
_crossfade_time -= deltaTimeInMillis;
} else {
_crossfade = false;
_newvol = _crossfade_target;
}
}
if (_pantrack || _volume != _newvol)
setVolume(_newvol);
}
return false;
}
void MusicNode::setVolume(uint8 new_volume) {
if (_pantrack) {
int cur_x = _engine->getScriptManager()->getStateValue(StateKey_ViewPos);
cur_x -= _pantrack_X;
int32 _width = _engine->getRenderManager()->getBkgSize().x;
if (cur_x < (-_width) / 2)
cur_x += _width;
else if (cur_x >= _width / 2)
cur_x -= _width;
float norm = (float)cur_x / ((float)_width / 2.0);
float lvl = fabs(norm);
if (lvl > 0.5)
lvl = (lvl - 0.5) * 1.7;
else
lvl = 1.0;
float bal = sin(-norm * 3.1415926) * 127.0;
if (_engine->_mixer->isSoundHandleActive(_handle)) {
_engine->_mixer->setChannelBalance(_handle, bal);
_engine->_mixer->setChannelVolume(_handle, new_volume * lvl);
}
} else {
if (_engine->_mixer->isSoundHandleActive(_handle)) {
_engine->_mixer->setChannelBalance(_handle, 0);
_engine->_mixer->setChannelVolume(_handle, new_volume);
}
}
_volume = new_volume;
}
PanTrackNode::PanTrackNode(ZVision *engine, uint32 key, uint32 slot, int16 pos)
: SideFX(engine, key, SIDEFX_PANTRACK) {
_slot = slot;
SideFX *fx = _engine->getScriptManager()->getSideFX(slot);
if (fx && fx->getType() == SIDEFX_AUDIO) {
MusicNode *mus = (MusicNode *)fx;
mus->setPanTrack(pos);
}
}
PanTrackNode::~PanTrackNode() {
SideFX *fx = _engine->getScriptManager()->getSideFX(_slot);
if (fx && fx->getType() == SIDEFX_AUDIO) {
MusicNode *mus = (MusicNode *)fx;
mus->unsetPanTrack();
}
}
} // End of namespace ZVision
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