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Diffstat (limited to 'scumm/smush/smush_mixer.cpp')
| -rw-r--r-- | scumm/smush/smush_mixer.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/scumm/smush/smush_mixer.cpp b/scumm/smush/smush_mixer.cpp new file mode 100644 index 0000000000..c7ed4708b6 --- /dev/null +++ b/scumm/smush/smush_mixer.cpp @@ -0,0 +1,166 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2002-2003 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/util.h" +#include "smush_mixer.h" +#include "channel.h" +#include "sound/mixer.h" +#include "scumm/scumm.h" +#include "scumm/sound.h" +#include "scumm/imuse.h" + +SmushMixer::SmushMixer(SoundMixer *m) : + _mixer(m), + _soundFrequency(22050), + _nextIndex(_mixer->_beginSlots) { + for(int32 i = _mixer->_beginSlots; i < SoundMixer::NUM_CHANNELS; i++) { + _channels[i].id = -1; + _channels[i].chan = NULL; + _channels[i].first = true; + } +} + +SmushMixer::~SmushMixer() { +} + +SmushChannel *SmushMixer::findChannel(int32 track) { + debug(9, "SmushMixer::findChannel(%d)", track); + for(int32 i = _mixer->_beginSlots; i < SoundMixer::NUM_CHANNELS; i++) { + if(_channels[i].id == track) + return _channels[i].chan; + } + return NULL; +} + +bool SmushMixer::addChannel(SmushChannel *c) { + int32 track = c->getTrackIdentifier(); + int i; + + debug(9, "SmushMixer::addChannel(%d)", track); + + for(i = _mixer->_beginSlots; i < SoundMixer::NUM_CHANNELS; i++) { + if(_channels[i].id == track) + warning("SmushMixer::addChannel(%d) : channel already exist !", track); + } + if(_nextIndex >= SoundMixer::NUM_CHANNELS) + _nextIndex = _mixer->_beginSlots; + + for(i = _nextIndex; i < SoundMixer::NUM_CHANNELS; i++) { + if(_channels[i].chan == NULL || _channels[i].id == -1) { + _channels[i].chan = c; + _channels[i].id = track; + _channels[i].first = true; + _nextIndex = i + 1; + return true; + } + } + + for(i = _mixer->_beginSlots; i < _nextIndex; i++) { + if(_channels[i].chan == NULL || _channels[i].id == -1) { + _channels[i].chan = c; + _channels[i].id = track; + _channels[i].first = true; + _nextIndex = i + 1; + return true; + } + } + + warning("_nextIndex == %d\n", _nextIndex); + + for(i = _mixer->_beginSlots; i < SoundMixer::NUM_CHANNELS; i++) { + warning("channel %d : %p(%d, %d) %d %d\n", i, (void *)_channels[i].chan, + _channels[i].chan ? _channels[i].chan->getTrackIdentifier() : -1, + _channels[i].chan ? _channels[i].chan->isTerminated() : 1, + _channels[i].first, _channels[i].mixer_index); + } + + error("SmushMixer::add_channel() : no more channel available"); + return false; +} + +bool SmushMixer::handleFrame() { + debug(9, "SmushMixer::handleFrame()"); + for(int i = _mixer->_beginSlots; i < SoundMixer::NUM_CHANNELS; i++) { + if(_channels[i].id != -1) { + if(_channels[i].chan->isTerminated()) { + delete _channels[i].chan; + _channels[i].id = -1; + _channels[i].chan = NULL; + } else { + int32 rate; + bool stereo, is_short; + + _channels[i].chan->getParameters(rate, stereo, is_short); + int32 size = _channels[i].chan->availableSoundData(); + int32 flags = stereo ? SoundMixer::FLAG_STEREO : 0; + + if(is_short) { + short *data = new int16[size * (stereo ? 2 : 1) * 2]; + _channels[i].chan->getSoundData(data, size); + if(_channels[i].chan->getRate() == 11025) size *= 2; + size *= stereo ? 4 : 2; + + if(_silentMixer == false) { + if(_channels[i].first) { + _channels[i].mixer_index = _mixer->playStream(NULL, -1, data, size, rate, flags | SoundMixer::FLAG_16BITS); + _channels[i].first = false; + } else { + _mixer->append(_channels[i].mixer_index, data, size, rate, flags | SoundMixer::FLAG_16BITS); + } + } + + delete []data; + } else { + int8 *data = new int8[size * (stereo ? 2 : 1) * 2]; + _channels[i].chan->getSoundData(data, size); + if(_channels[i].chan->getRate() == 11025) size *= 2; + size *= stereo ? 2 : 1; + + if(_silentMixer == false) { + if(_channels[i].first) { + _channels[i].mixer_index = _mixer->playStream(NULL, -1, data, size, rate, flags | SoundMixer::FLAG_UNSIGNED); + _channels[i].first = false; + } else { + _mixer->append(_channels[i].mixer_index, data, size, rate, flags | SoundMixer::FLAG_UNSIGNED); + } + } + + delete []data; + } + } + } + } + return true; +} + +bool SmushMixer::stop() { + debug(9, "SmushMixer::stop()"); + for(int i = _mixer->_beginSlots; i < SoundMixer::NUM_CHANNELS; i++) { + if(_channels[i].id != -1) { + delete _channels[i].chan; + _channels[i].id = -1; + _channels[i].chan = NULL; + } + } + return true; +} + |