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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"
#include "common/algorithm.h"
namespace Titanic {
CAudioBuffer::CAudioBuffer(int maxSize) : _finished(false) {
_data.resize(maxSize);
reset();
}
void CAudioBuffer::reset() {
_frontP = _backP = &_data[0];
}
void CAudioBuffer::push(int16 value) {
assert(!full());
compact();
*_backP++ = value;
}
void CAudioBuffer::push(int16 *values, int count) {
compact();
assert(freeSize() >= count);
Common::copy(values, values + count, _backP);
_backP += count;
}
int16 CAudioBuffer::pop() {
assert(!empty());
return *_frontP++;
}
void CAudioBuffer::compact() {
if (_frontP != &_data[0]) {
Common::copy(_frontP, _backP, &_data[0]);
_backP -= _frontP - &_data[0];
_frontP = &_data[0];
}
}
int CAudioBuffer::freeSize() {
compact();
return &_data[0] + _data.size() - _backP;
}
void CAudioBuffer::enterCriticalSection() {
_mutex.lock();
}
void CAudioBuffer::leaveCriticalSection() {
_mutex.unlock();
}
} // End of namespace Titanic
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