75 lines
2 KiB
C++
75 lines
2 KiB
C++
/* 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 "backends/mixer/nullmixer/nullsdl-mixer.h"
|
|
#include "common/savefile.h"
|
|
|
|
NullSdlMixerManager::NullSdlMixerManager() : SdlMixerManager() {
|
|
_outputRate = 22050;
|
|
_callsCounter = 0;
|
|
_callbackPeriod = 10;
|
|
_samples = 8192;
|
|
while (_samples * 16 > _outputRate * 2)
|
|
_samples >>= 1;
|
|
_samplesBuf = new uint8[_samples * 4];
|
|
}
|
|
|
|
NullSdlMixerManager::~NullSdlMixerManager() {
|
|
delete _samplesBuf;
|
|
}
|
|
|
|
void NullSdlMixerManager::init() {
|
|
_mixer = new Audio::MixerImpl(g_system, _outputRate);
|
|
assert(_mixer);
|
|
_mixer->setReady(true);
|
|
}
|
|
|
|
void NullSdlMixerManager::suspendAudio() {
|
|
_audioSuspended = true;
|
|
}
|
|
|
|
int NullSdlMixerManager::resumeAudio() {
|
|
if (!_audioSuspended) {
|
|
return -2;
|
|
}
|
|
_audioSuspended = false;
|
|
return 0;
|
|
}
|
|
|
|
|
|
void NullSdlMixerManager::startAudio() {
|
|
}
|
|
|
|
void NullSdlMixerManager::callbackHandler(byte *samples, int len) {
|
|
assert(_mixer);
|
|
_mixer->mixCallback(samples, len);
|
|
}
|
|
|
|
void NullSdlMixerManager::update() {
|
|
if (_audioSuspended) {
|
|
return;
|
|
}
|
|
_callsCounter++;
|
|
if ((_callsCounter % _callbackPeriod) == 0) {
|
|
callbackHandler(_samplesBuf, _samples);
|
|
}
|
|
}
|