scummvm/scumm/imuse_digi/dimuse.cpp
2004-08-25 07:03:38 +00:00

363 lines
11 KiB
C++

/* ScummVM - Scumm Interpreter
* Copyright (C) 2001-2004 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#include "stdafx.h"
#include "common/timer.h"
#include "scumm/actor.h"
#include "scumm/scumm.h"
#include "scumm/sound.h"
#include "scumm/imuse_digi/dimuse.h"
#include "scumm/imuse_digi/dimuse_bndmgr.h"
#include "sound/audiostream.h"
#include "sound/mixer.h"
namespace Scumm {
IMuseDigital::Track::Track()
: soundId(-1), used(false), stream(NULL), stream2(NULL) {
}
void IMuseDigital::timer_handler(void *refCon) {
IMuseDigital *imuseDigital = (IMuseDigital *)refCon;
imuseDigital->callback();
}
IMuseDigital::IMuseDigital(ScummEngine *scumm, int fps)
: _vm(scumm) {
_mutex = g_system->createMutex();
_pause = false;
_sound = new ImuseDigiSndMgr(_vm);
_volVoice = 0;
_volSfx = 0;
_volMusic = 0;
_callbackFps = fps;
resetState();
for (int l = 0; l < MAX_DIGITAL_TRACKS + MAX_DIGITAL_FADETRACKS; l++) {
_track[l] = new Track;
_track[l]->used = false;
}
_vm->_timer->installTimerProc(timer_handler, 1000000 / _callbackFps, this);
}
IMuseDigital::~IMuseDigital() {
stopAllSounds();
_vm->_timer->removeTimerProc(timer_handler);
for (int l = 0; l < MAX_DIGITAL_TRACKS + MAX_DIGITAL_FADETRACKS; l++) {
delete _track[l];
}
delete _sound;
g_system->deleteMutex(_mutex);
}
void IMuseDigital::resetState() {
_curMusicState = 0;
_curMusicSeq = 0;
_curMusicCue = 0;
memset(_attributes, 0, sizeof(_attributes));
_nextSeqToPlay = 0;
}
void IMuseDigital::saveOrLoad(Serializer *ser) {
Common::StackLock lock(_mutex, "IMuseDigital::saveOrLoad()");
const SaveLoadEntry mainEntries[] = {
MKLINE(IMuseDigital, _volVoice, sleInt32, VER(31)),
MKLINE(IMuseDigital, _volSfx, sleInt32, VER(31)),
MKLINE(IMuseDigital, _volMusic, sleInt32, VER(31)),
MKLINE(IMuseDigital, _curMusicState, sleInt32, VER(31)),
MKLINE(IMuseDigital, _curMusicSeq, sleInt32, VER(31)),
MKLINE(IMuseDigital, _curMusicCue, sleInt32, VER(31)),
MKLINE(IMuseDigital, _nextSeqToPlay, sleInt32, VER(31)),
MKARRAY(IMuseDigital, _attributes[0], sleInt32, 188, VER(31)),
MKEND()
};
const SaveLoadEntry trackEntries[] = {
MKLINE(Track, pan, sleInt8, VER(31)),
MKLINE(Track, vol, sleInt32, VER(31)),
MKLINE(Track, volFadeDest, sleInt32, VER(31)),
MKLINE(Track, volFadeStep, sleInt32, VER(31)),
MKLINE(Track, volFadeDelay, sleInt32, VER(31)),
MKLINE(Track, volFadeUsed, sleByte, VER(31)),
MKLINE(Track, soundId, sleInt32, VER(31)),
MKARRAY(Track, soundName[0], sleByte, 15, VER(31)),
MKLINE(Track, used, sleByte, VER(31)),
MKLINE(Track, toBeRemoved, sleByte, VER(31)),
MKLINE(Track, souStream, sleByte, VER(31)),
MKLINE(Track, started, sleByte, VER(31)),
MKLINE(Track, priority, sleInt32, VER(31)),
MKLINE(Track, regionOffset, sleInt32, VER(31)),
MK_OBSOLETE(Track, trackOffset, sleInt32, VER(31), VER(31)),
MKLINE(Track, dataOffset, sleInt32, VER(31)),
MKLINE(Track, curRegion, sleInt32, VER(31)),
MKLINE(Track, curHookId, sleInt32, VER(31)),
MKLINE(Track, volGroupId, sleInt32, VER(31)),
MKLINE(Track, soundType, sleInt32, VER(31)),
MKLINE(Track, iteration, sleInt32, VER(31)),
MKLINE(Track, mod, sleInt32, VER(31)),
MKLINE(Track, mixerFlags, sleInt32, VER(31)),
MKLINE(Track, mixerVol, sleInt32, VER(31)),
MKLINE(Track, mixerPan, sleInt32, VER(31)),
MKEND()
};
ser->_ref_me = this;
ser->_save_ref = NULL;
ser->_load_ref = NULL;
ser->saveLoadEntries(this, mainEntries);
for (int l = 0; l < MAX_DIGITAL_TRACKS + MAX_DIGITAL_FADETRACKS; l++) {
Track *track = _track[l];
ser->saveLoadEntries(track, trackEntries);
if (!ser->isSaving()) {
if (!track->used)
continue;
track->readyToRemove = false;
if ((track->toBeRemoved) || (track->souStream)) {
track->stream2 = NULL;
track->stream = NULL;
track->used = false;
continue;
}
track->soundHandle = _sound->openSound(track->soundId,
track->soundName, track->soundType,
track->volGroupId, -1);
assert(track->soundHandle);
int32 streamBufferSize = track->iteration;
int freq = _sound->getFreq(track->soundHandle);
track->stream2 = NULL;
track->stream = makeAppendableAudioStream(freq, track->mixerFlags, streamBufferSize);
_vm->_mixer->playInputStream(&track->handle, track->stream, false, track->mixerVol, track->mixerPan, -1, false);
}
}
}
void IMuseDigital::callback() {
Common::StackLock lock(_mutex, "IMuseDigital::callback()");
for (int l = 0; l < MAX_DIGITAL_TRACKS + MAX_DIGITAL_FADETRACKS; l++) {
Track *track = _track[l];
if (track->used && !track->readyToRemove) {
if (track->toBeRemoved) {
track->readyToRemove = true;
continue;
}
if (_pause || !_vm)
return;
if (track->volFadeUsed) {
if (track->volFadeStep < 0) {
if (track->vol > track->volFadeDest) {
track->vol += track->volFadeStep;
if (track->vol < track->volFadeDest) {
track->vol = track->volFadeDest;
track->volFadeUsed = false;
}
if (track->vol == 0) {
track->toBeRemoved = true;
}
}
} else if (track->volFadeStep > 0) {
if (track->vol < track->volFadeDest) {
track->vol += track->volFadeStep;
if (track->vol > track->volFadeDest) {
track->vol = track->volFadeDest;
track->volFadeUsed = false;
}
}
}
debug(5, "Fade: sound(%d), Vol(%d)", track->soundId, track->vol / 1000);
}
int pan = (track->pan != 64) ? 2 * track->pan - 127 : 0;
int vol = track->vol / 1000;
if (track->volGroupId == 1)
vol = (vol * _volVoice) / 128;
if (track->volGroupId == 2)
vol = (vol * _volSfx) / 128;
if (track->volGroupId == 3)
vol = (vol * _volMusic) / 128;
track->mixerVol = vol;
track->mixerPan = pan;
if (track->stream) {
byte *data = NULL;
int32 result = 0;
if (track->curRegion == -1) {
switchToNextRegion(l);
if (track->toBeRemoved)
continue;
}
int bits = _sound->getBits(track->soundHandle);
int channels = _sound->getChannels(track->soundHandle);
int32 mixer_size = track->iteration / _callbackFps;
if (track->stream->endOfData()) {
mixer_size *= 2;
}
if ((bits == 12) || (bits == 16)) {
if (channels == 1)
mixer_size &= ~1;
if (channels == 2)
mixer_size &= ~3;
} else {
if (channels == 2)
mixer_size &= ~1;
}
if (mixer_size == 0)
continue;
do {
if (bits == 12) {
byte *ptr = NULL;
mixer_size += track->mod;
int mixer_size_12 = (mixer_size * 3) / 4;
int length = (mixer_size_12 / 3) * 4;
track->mod = mixer_size - length;
int32 offset = (track->regionOffset * 3) / 4;
int result2 = _sound->getDataFromRegion(track->soundHandle, track->curRegion, &ptr, offset, mixer_size_12);
result = BundleCodecs::decode12BitsSample(ptr, &data, result2);
free(ptr);
} else if (bits == 16) {
result = _sound->getDataFromRegion(track->soundHandle, track->curRegion, &data, track->regionOffset, mixer_size);
if (channels == 1) {
result &= ~1;
}
if (channels == 2) {
result &= ~3;
}
} else if (bits == 8) {
result = _sound->getDataFromRegion(track->soundHandle, track->curRegion, &data, track->regionOffset, mixer_size);
if (channels == 2) {
result &= ~1;
}
}
if (result > mixer_size)
result = mixer_size;
if (_vm->_mixer->isReady()) {
_vm->_mixer->setChannelVolume(track->handle, vol);
_vm->_mixer->setChannelBalance(track->handle, pan);
track->stream->append(data, result);
track->regionOffset += result;
free(data);
}
if (_sound->isEndOfRegion(track->soundHandle, track->curRegion)) {
switchToNextRegion(l);
if (track->toBeRemoved)
break;
}
mixer_size -= result;
assert(mixer_size >= 0);
} while (mixer_size != 0);
} else if (track->stream2) {
if (_vm->_mixer->isReady()) {
if (!track->started) {
track->started = true;
_vm->_mixer->playInputStream(&track->handle, track->stream2, false, vol, pan, -1, false);
} else {
_vm->_mixer->setChannelVolume(track->handle, vol);
_vm->_mixer->setChannelBalance(track->handle, pan);
}
}
}
}
}
}
void IMuseDigital::switchToNextRegion(int trackId) {
debug(5, "switchToNextRegion(track:%d)", trackId);
Track *track = _track[trackId];
if (trackId >= MAX_DIGITAL_TRACKS) {
track->toBeRemoved = true;
debug(5, "exit (fadetrack can't go next region) switchToNextRegion(trackId:%d)", trackId);
return;
}
int num_regions = _sound->getNumRegions(track->soundHandle);
if (++track->curRegion == num_regions) {
track->toBeRemoved = true;
debug(5, "exit (end of regions) switchToNextRegion(track:%d)", trackId);
return;
}
ImuseDigiSndMgr::soundStruct *soundHandle = track->soundHandle;
int jumpId = _sound->getJumpIdByRegionAndHookId(soundHandle, track->curRegion, track->curHookId);
if (jumpId == -1)
jumpId = _sound->getJumpIdByRegionAndHookId(soundHandle, track->curRegion, 0);
if (jumpId != -1) {
int region = _sound->getRegionIdByJumpId(soundHandle, jumpId);
assert(region != -1);
int sampleHookId = _sound->getJumpHookId(soundHandle, jumpId);
assert(sampleHookId != -1);
int fadeDelay = (60 * _sound->getJumpFade(soundHandle, jumpId)) / 1000;
if (sampleHookId != 0) {
if (track->curHookId == sampleHookId) {
if (fadeDelay != 0) {
int fadeTrackId = cloneToFadeOutTrack(trackId, fadeDelay);
Track *fadeTrack = _track[fadeTrackId];
fadeTrack->dataOffset = _sound->getRegionOffset(fadeTrack->soundHandle, fadeTrack->curRegion);
fadeTrack->regionOffset = 0;
debug(5, "switchToNextRegion-sound(%d) select %d region, curHookId: %d", fadeTrack->soundId, fadeTrack->curRegion, fadeTrack->curHookId);
fadeTrack->curHookId = 0;
}
track->curRegion = region;
debug(5, "switchToNextRegion-sound(%d) jump to %d region, curHookId: %d", track->soundId, track->curRegion, track->curHookId);
track->curHookId = 0;
}
} else {
if (fadeDelay != 0) {
int fadeTrackId = cloneToFadeOutTrack(trackId, fadeDelay);
Track *fadeTrack = _track[fadeTrackId];
fadeTrack->dataOffset = _sound->getRegionOffset(fadeTrack->soundHandle, fadeTrack->curRegion);
fadeTrack->regionOffset = 0;
debug(5, "switchToNextRegion-sound(%d) select %d region, curHookId: %d", fadeTrack->soundId, fadeTrack->curRegion, fadeTrack->curHookId);
}
track->curRegion = region;
debug(5, "switchToNextRegion-sound(%d) jump to %d region, curHookId: %d", track->soundId, track->curRegion, track->curHookId);
}
}
debug(5, "switchToNextRegion-sound(%d) select %d region, curHookId: %d", track->soundId, track->curRegion, track->curHookId);
track->dataOffset = _sound->getRegionOffset(soundHandle, track->curRegion);
track->regionOffset = 0;
}
} // End of namespace Scumm