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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 "titanic/sound/audio_buffer.h"
namespace Titanic {
CAudioBuffer::CAudioBuffer(int bufferSize) : _flag(true), _field18(0) {
_buffer.resize(bufferSize);
reset();
}
CAudioBuffer::~CAudioBuffer() {
_buffer.clear();
}
void CAudioBuffer::reset() {
_flag = true;
_fieldC = _field10 = _buffer.size() / 2;
}
const byte *CAudioBuffer::getDataPtr1() const {
return _flag ? &_buffer[_buffer.size() / 2] : &_buffer[0];
}
const byte *CAudioBuffer::getDataPtr2() const {
return _flag ? &_buffer[0] : &_buffer[_buffer.size() / 2];
}
const byte *CAudioBuffer::getPtr1() const {
const byte *ptr = getDataPtr1();
return ptr + (_buffer.size() / 2 - _fieldC);
}
const byte *CAudioBuffer::getPtr2() const {
const byte *ptr = getDataPtr2();
return ptr + (_buffer.size() / 2 - _field10);
}
void CAudioBuffer::setC(int val) {
_fieldC -= val;
if (_fieldC < 0) {
_fieldC = 0;
} else if (val && !_field10) {
update();
}
}
void CAudioBuffer::set10(int val) {
_field10 -= val;
if (_field10 < 0) {
_field10 = 0;
} else if (val && !_field10) {
update();
}
}
void CAudioBuffer::update() {
_flag = !_flag;
_fieldC = _field10 = _buffer.size() / 2;
}
void CAudioBuffer::enterCriticalSection() {
_mutex.lock();
}
void CAudioBuffer::leaveCriticalSection() {
_mutex.unlock();
}
} // End of namespace Titanic
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