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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 <FSysSettingInfo.h>
#include <FAppAppRegistry.h>
#include "backends/platform/tizen/audio.h"
#include "backends/platform/tizen/system.h"
#define TIMER_INTERVAL 10
#define VOLUME 96
#define MIN_TIMER_INTERVAL 5
AudioThread::AudioThread() :
_mixer(0),
_timer(0),
_audioOut(0),
_head(0),
_tail(0),
_ready(0),
_interval(TIMER_INTERVAL),
_playing(-1),
_size(0),
_muted(true) {
}
Audio::MixerImpl *AudioThread::Construct(OSystem *system) {
logEntered();
if (IsFailed(EventDrivenThread::Construct(DEFAULT_STACK_SIZE, THREAD_PRIORITY_HIGH))) {
AppLog("Failed to create AudioThread");
return NULL;
}
_mixer = new Audio::MixerImpl(system, 44100);
return _mixer;
}
AudioThread::~AudioThread() {
logEntered();
}
bool AudioThread::isSilentMode() {
bool silentMode;
String key(L"SilentMode");
Tizen::System::SettingInfo::GetValue(key, silentMode);
return silentMode;
}
void AudioThread::setMute(bool on) {
if (_audioOut && _timer) {
_muted = on;
if (on) {
_timer->Cancel();
} else {
_timer->Start(_interval);
}
}
}
bool AudioThread::OnStart(void) {
logEntered();
_audioOut = new Tizen::Media::AudioOut();
if (!_audioOut || IsFailed(_audioOut->Construct(*this))) {
AppLog("Failed to create AudioOut");
return false;
}
int sampleRate = _mixer->getOutputRate();
// ideally we would update _mixer with GetOptimizedSampleRate here
if (_audioOut->GetOptimizedSampleRate() != sampleRate) {
AppLog("Non optimal sample rate %d", _audioOut->GetOptimizedSampleRate());
}
if (IsFailed(_audioOut->Prepare(AUDIO_TYPE_PCM_S16_LE,
AUDIO_CHANNEL_TYPE_STEREO, sampleRate))) {
AppLog("Failed to prepare AudioOut %d", sampleRate);
return false;
}
int bufferSize = _audioOut->GetMinBufferSize();
for (int i = 0; i < NUM_AUDIO_BUFFERS; i++) {
if (IsFailed(_audioBuffer[i].Construct(bufferSize))) {
AppLog("Failed to create audio buffer");
return false;
}
}
_size = _audioBuffer[0].GetCapacity();
_timer = new Timer();
if (!_timer || IsFailed(_timer->Construct(*this))) {
AppLog("Failed to create audio timer");
return false;
}
if (IsFailed(_timer->Start(_interval))) {
AppLog("failed to start audio timer");
return false;
}
_muted = false;
_mixer->setReady(true);
_audioOut->SetVolume(isSilentMode() ? 0 : VOLUME);
_audioOut->Start();
return true;
}
void AudioThread::OnStop(void) {
logEntered();
_mixer->setReady(false);
if (_timer) {
if (!_muted) {
_timer->Cancel();
}
delete _timer;
}
if (_audioOut) {
_audioOut->Reset();
_audioOut->Unprepare();
delete _audioOut;
}
}
void AudioThread::OnAudioOutErrorOccurred(Tizen::Media::AudioOut &src, result r) {
logEntered();
}
void AudioThread::OnAudioOutInterrupted(Tizen::Media::AudioOut &src) {
logEntered();
}
void AudioThread::OnAudioOutReleased(Tizen::Media::AudioOut &src) {
logEntered();
_audioOut->Start();
}
void AudioThread::OnAudioOutBufferEndReached(Tizen::Media::AudioOut &src) {
if (_ready > 0) {
_playing = _tail;
_audioOut->WriteBuffer(_audioBuffer[_tail]);
_tail = (_tail + 1) % NUM_AUDIO_BUFFERS;
_ready--;
} else {
// audio buffer empty: decrease timer interval
_playing = -1;
_interval -= 1;
if (_interval < MIN_TIMER_INTERVAL) {
_interval = MIN_TIMER_INTERVAL;
}
}
}
void AudioThread::OnTimerExpired(Timer &timer) {
if (_ready < NUM_AUDIO_BUFFERS) {
if (_playing != _head) {
if (_mixer->mixCallback((byte *)_audioBuffer[_head].GetPointer(), _size)) {
_head = (_head + 1) % NUM_AUDIO_BUFFERS;
_ready++;
}
}
} else {
// audio buffer full: restore timer interval
_interval = TIMER_INTERVAL;
}
if (_ready && _playing == -1) {
OnAudioOutBufferEndReached(*_audioOut);
}
_timer->Start(_interval);
}
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