77 lines
1.9 KiB
C++
77 lines
1.9 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ultima/nuvie/sound/adplug/emu_opl.h"
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#include "ultima/nuvie/sound/adplug/fm_opl.h"
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namespace Ultima {
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namespace Nuvie {
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CEmuopl::CEmuopl(int rate, bool bit16, bool usestereo)
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: use16bit(bit16), stereo(usestereo), oplRate(rate) {
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YM3812Init(1, 3579545, rate);
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}
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CEmuopl::~CEmuopl() {
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YM3812Shutdown();
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}
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void CEmuopl::update(short *buf, int samples) {
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int i;
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if (use16bit) {
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YM3812UpdateOne(0, buf, samples);
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if (stereo)
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for (i = samples - 1; i >= 0; i--) {
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buf[i * 2] = buf[i];
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buf[i * 2 + 1] = buf[i];
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}
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} else {
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short *tempbuf = new short[stereo ? samples * 2 : samples];
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YM3812UpdateOne(0, tempbuf, samples);
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if (stereo)
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for (i = samples - 1; i >= 0; i--) {
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tempbuf[i * 2] = tempbuf[i];
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tempbuf[i * 2 + 1] = tempbuf[i];
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}
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for (i = 0; i < (stereo ? samples * 2 : samples); i++)
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((char *)buf)[i] = (tempbuf[i] >> 8) ^ 0x80;
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delete [] tempbuf;
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}
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}
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void CEmuopl::write(int reg, int val) {
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YM3812Write(0, 0, reg);
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YM3812Write(0, 1, val);
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}
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void CEmuopl::init() {
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YM3812ResetChip(0);
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}
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} // End of namespace Nuvie
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} // End of namespace Ultima
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