mirror of
https://github.com/libretro/scummvm.git
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146 lines
3.4 KiB
C++
146 lines
3.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "gob/sound/soundblaster.h"
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#include "gob/sound/sounddesc.h"
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namespace Gob {
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SoundBlaster::SoundBlaster(Audio::Mixer &mixer) : SoundMixer(mixer, Audio::Mixer::kSFXSoundType) {
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_curSoundDesc = 0;
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_compositionSamples = 0;
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_compositionSampleCount = 0;
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_compositionPos = -1;
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_compositionRepCount = 0;
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}
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SoundBlaster::~SoundBlaster() {
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}
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void SoundBlaster::playSample(SoundDesc &sndDesc, int16 repCount,
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int16 frequency, int16 fadeLength) {
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SoundMixer::play(sndDesc, repCount, frequency, fadeLength);
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}
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void SoundBlaster::stopSound(int16 fadeLength, SoundDesc *sndDesc) {
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Common::StackLock slock(_mutex);
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if (sndDesc && (sndDesc != _curSoundDesc))
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return;
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_compositionRepCount = 0;
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if (fadeLength <= 0)
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_curSoundDesc = 0;
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SoundMixer::stop(fadeLength);
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}
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void SoundBlaster::stopComposition() {
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if (_compositionPos != -1) {
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stopSound(0);
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_compositionPos = -1;
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}
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}
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void SoundBlaster::endComposition() {
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_compositionPos = -1;
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_compositionRepCount = 0;
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}
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void SoundBlaster::nextCompositionPos() {
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int8 slot;
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while ((++_compositionPos < 50) &&
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((slot = _composition[_compositionPos]) != -1)) {
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if ((slot >= 0) && (slot < _compositionSampleCount)) {
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SoundDesc &sample = _compositionSamples[slot];
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if (!sample.empty() && (sample.getType() == SOUND_SND)) {
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setSample(sample, 1, 0, 0);
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return;
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}
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}
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if (_compositionPos == 49)
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_compositionPos = -1;
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}
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_compositionPos = -1;
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}
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void SoundBlaster::playComposition(int16 *composition, int16 freqVal,
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SoundDesc *sndDescs, int8 sndCount) {
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_compositionSamples = sndDescs;
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_compositionSampleCount = sndCount;
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int i = -1;
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do {
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i++;
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_composition[i] = composition[i];
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} while ((i < 50) && (composition[i] != -1));
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_compositionPos = -1;
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nextCompositionPos();
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}
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void SoundBlaster::repeatComposition(int32 repCount) {
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_compositionRepCount = repCount;
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}
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void SoundBlaster::setSample(SoundDesc &sndDesc, int16 repCount, int16 frequency,
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int16 fadeLength) {
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_curSoundDesc = &sndDesc;
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SoundMixer::setSample(sndDesc, repCount, frequency, fadeLength);
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}
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void SoundBlaster::checkEndSample() {
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if (_compositionPos != -1) {
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nextCompositionPos();
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return;
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}
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if (_compositionRepCount != 0) {
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if (_compositionRepCount > 0)
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_compositionRepCount--;
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nextCompositionPos();
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if (_compositionPos != -1)
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return;
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}
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SoundMixer::checkEndSample();
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}
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void SoundBlaster::endFade() {
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if (_fadeVolStep > 0) {
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_compositionPos = -1;
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_curSoundDesc = 0;
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}
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SoundMixer::endFade();
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}
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} // End of namespace Gob
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