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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 "bladerunner/audio_player.h"
#include "bladerunner/archive.h"
#include "bladerunner/aud_stream.h"
#include "bladerunner/audio_cache.h"
#include "bladerunner/audio_mixer.h"
#include "bladerunner/bladerunner.h"
#include "common/debug.h"
#include "common/stream.h"
#include "common/random.h"
namespace Common {
class MemoryReadStream;
}
namespace BladeRunner {
AudioPlayer::AudioPlayer(BladeRunnerEngine *vm) {
_vm = vm;
for (int i = 0; i != 6; ++i) {
_tracks[i].priority = 0;
_tracks[i].isActive = false;
_tracks[i].channel = -1;
_tracks[i].stream = nullptr;
}
_sfxVolume =BLADERUNNER_ORIGINAL_SETTINGS ? 65 : 100;
}
AudioPlayer::~AudioPlayer() {
stopAll();
}
void AudioPlayer::stopAll() {
for (int i = 0; i != kTracks; ++i) {
stop(i, true);
}
for (int i = 0; i != kTracks; ++i) {
while (isActive(i)) {
// wait for all tracks to finish
}
}
}
void AudioPlayer::adjustVolume(int track, int volume, int delay, bool overrideVolume) {
if (track < 0 || track >= kTracks || !_tracks[track].isActive || _tracks[track].channel == -1) {
return;
}
int actualVolume = volume;
if (!overrideVolume) {
actualVolume = actualVolume * _sfxVolume / 100;
}
_tracks[track].volume = actualVolume;
_vm->_audioMixer->adjustVolume(_tracks[track].channel, actualVolume, 60 * delay);
}
void AudioPlayer::adjustPan(int track, int pan, int delay) {
if (track < 0 || track >= kTracks || !_tracks[track].isActive || _tracks[track].channel == -1) {
return;
}
_tracks[track].pan = pan;
_vm->_audioMixer->adjustPan(_tracks[track].channel, pan, 60 * delay);
}
void AudioPlayer::setVolume(int volume) {
_sfxVolume = volume;
}
int AudioPlayer::getVolume() const {
return _sfxVolume;
}
void AudioPlayer::playSample() {
Common::String name;
int rnd = _vm->_rnd.getRandomNumber(3);
if (rnd == 0) {
name = "gunmiss1.aud";
} else if (rnd == 1) {
name = "gunmiss2.aud";
} else if (rnd == 2) {
name = "gunmiss3.aud";
} else {
name = "gunmiss4.aud";
}
playAud(name, 100, 0, 0, 100, 0);
}
void AudioPlayer::remove(int channel) {
Common::StackLock lock(_mutex);
for (int i = 0; i != kTracks; ++i) {
if (_tracks[i].channel == channel) {
_tracks[i].isActive = false;
_tracks[i].priority = 0;
_tracks[i].channel = -1;
_tracks[i].stream = nullptr;
break;
}
}
}
void AudioPlayer::mixerChannelEnded(int channel, void *data) {
AudioPlayer *audioPlayer = (AudioPlayer *)data;
audioPlayer->remove(channel);
}
int AudioPlayer::playAud(const Common::String &name, int volume, int panFrom, int panTo, int priority, byte flags, Audio::Mixer::SoundType type) {
/* Find first available track or, alternatively, the lowest priority playing track */
int track = -1;
int lowestPriority = 1000000;
int lowestPriorityTrack = -1;
for (int i = 0; i != 6; ++i) {
if (!isActive(i)) {
track = i;
break;
}
if (lowestPriorityTrack == -1 || _tracks[i].priority < lowestPriority) {
lowestPriority = _tracks[i].priority;
lowestPriorityTrack = i;
}
}
/* If there's no available track, stop the lowest priority track if it's lower than
* the new priority
*/
if (track == -1 && lowestPriority < priority) {
stop(lowestPriorityTrack, true);
track = lowestPriorityTrack;
}
/* If there's still no available track, give up */
if (track == -1) {
return -1;
}
/* Load audio resource and store in cache. Playback will happen directly from there. */
int32 hash = MIXArchive::getHash(name);
if (!_vm->_audioCache->findByHash(hash)) {
Common::SeekableReadStream *r = _vm->getResourceStream(name);
if (!r) {
return -1;
}
int32 size = r->size();
while (!_vm->_audioCache->canAllocate(size)) {
if (!_vm->_audioCache->dropOldest()) {
delete r;
return -1;
}
}
_vm->_audioCache->storeByHash(hash, r);
delete r;
}
AudStream *audioStream = new AudStream(_vm->_audioCache, hash);
int actualVolume = volume;
if (!(flags & kAudioPlayerOverrideVolume)) {
actualVolume = _sfxVolume * volume / 100;
}
int channel = _vm->_audioMixer->play(
type,
audioStream,
priority,
flags & kAudioPlayerLoop,
actualVolume,
panFrom,
mixerChannelEnded,
this);
if (channel == -1) {
delete audioStream;
return -1;
}
if (panFrom != panTo) {
_vm->_audioMixer->adjustPan(channel, panTo, (60 * audioStream->getLength()) / 1000);
}
_tracks[track].isActive = true;
_tracks[track].channel = channel;
_tracks[track].priority = priority;
_tracks[track].volume = actualVolume;
_tracks[track].stream = audioStream;
return track;
}
bool AudioPlayer::isActive(int track) const {
Common::StackLock lock(_mutex);
if (track < 0 || track >= kTracks) {
return false;
}
return _tracks[track].isActive;
}
void AudioPlayer::stop(int track, bool immediately) {
if (isActive(track)) {
_vm->_audioMixer->stop(_tracks[track].channel, immediately ? 0 : 60);
}
}
} // End of namespace BladeRunner
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