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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/config-manager.h"
#include "qdengine/qd_fwd.h"
#include "qdengine/xmath.h"
#include "qdengine/system/graphics/gr_dispatcher.h"
#include "qdengine/system/sound/snd_dispatcher.h"
#include "qdengine/qdcore/util/plaympp_api.h"
namespace QDEngine {
sndDispatcher *sndDispatcher::_dispatcher_ptr;
static bool operator == (const sndSound &snd0, const sndSound &snd1) {
return snd0.sound() == snd1.sound();
}
static bool operator == (const sndSound &snd, const sndHandle &h) {
return snd.handle() == &h;
}
sndDispatcher::sndDispatcher() : _is_enabled(true),
_is_paused(false),
_volume(255),
_volume_dB(0),
_frequency_coeff(1.0f) {
if (!_dispatcher_ptr)
_dispatcher_ptr = this;
}
sndDispatcher::~sndDispatcher() {
_sounds.clear();
if (_dispatcher_ptr == this)
_dispatcher_ptr = NULL;
}
void sndDispatcher::set_volume(uint32 vol) {
_volume = vol & 0xFF;
_volume_dB = convert_volume_to_dB(_volume);
update_volume();
}
int sndDispatcher::convert_volume_to_dB(int vol) {
if (vol > 255) vol = 255;
if (vol < 0) vol = 0;
if (vol != 255) {
const int DB_MIN = -10000;
const int DB_MAX = 0;
const int DB_SIZE = DB_MAX - DB_MIN;
return (DB_MIN + round(log10(9.0 * log(double(vol + 1)) / (log(2.0) * 8) + 1.0) * DB_SIZE));
} else
return 0;
}
void sndDispatcher::quant() {
for (auto it = _sounds.begin(); it != _sounds.end(); ) {
if (it->is_stopped())
it = _sounds.erase(it);
else
++it;
}
}
bool sndDispatcher::play_sound(const sndSound *snd, bool loop, int vol) {
if (is_enabled()) {
_sounds.push_back(sndSound(*snd));
sndSound &p = _sounds.back();
if (loop)
p.toggle_looping();
int snd_volume = (vol == 255) ? volume_dB() : convert_volume_to_dB((volume() * vol) >> 8);
if (!p.create_sound_buffer())
return false;
p.set_volume(snd_volume);
p.change_frequency(frequency_coeff());
if (!is_paused()) {
if (!p.play()) return false;
} else
p.pause();
}
return true;
}
bool sndDispatcher::stop_sound(const sndSound *snd) {
sound_list_t::iterator it = Common::find(_sounds.begin(), _sounds.end(), *snd);
if (it != _sounds.end()) {
it->stop();
_sounds.erase(it);
return true;
}
return false;
}
bool sndDispatcher::stop_sound(const sndHandle *handle) {
sound_list_t::iterator it = Common::find(_sounds.begin(), _sounds.end(), *handle);
if (it != _sounds.end()) {
it->stop();
_sounds.erase(it);
return true;
}
return false;
}
sndSound::status_t sndDispatcher::sound_status(const sndHandle *handle) const {
sound_list_t::const_iterator it = Common::find(_sounds.begin(), _sounds.end(), *handle);
if (it != _sounds.end()) {
if (is_paused())
return sndSound::SOUND_PAUSED;
return sndSound::SOUND_PLAYING;
}
return sndSound::SOUND_STOPPED;
}
sndSound::status_t sndDispatcher::sound_status(const sndSound *snd) const {
sound_list_t::const_iterator it = Common::find(_sounds.begin(), _sounds.end(), *snd);
if (it != _sounds.end())
return it->status();
return sndSound::SOUND_STOPPED;
}
bool sndDispatcher::update_volume() {
for (sound_list_t::iterator it = _sounds.begin(); it != _sounds.end(); ++it)
it->set_volume(volume_dB());
return true;
}
bool sndDispatcher::update_frequency() {
for (sound_list_t::iterator it = _sounds.begin(); it != _sounds.end(); ++it)
it->change_frequency(frequency_coeff());
return true;
}
void sndDispatcher::stop_sounds() {
for (sound_list_t::iterator it = _sounds.begin(); it != _sounds.end(); ++it)
it->stop();
_sounds.clear();
}
bool sndDispatcher::set_sound_frequency(const sndHandle *snd, float coeff) {
sound_list_t::iterator it = Common::find(_sounds.begin(), _sounds.end(), *snd);
if (it != _sounds.end()) {
it->change_frequency(frequency_coeff() * coeff);
return true;
}
return false;
}
void sndDispatcher::pause_sounds() {
for (sound_list_t::iterator it = _sounds.begin(); it != _sounds.end(); ++it)
it->pause();
}
void sndDispatcher::resume_sounds() {
for (sound_list_t::iterator it = _sounds.begin(); it != _sounds.end(); ++it) {
if (it->is_paused())
it->resume();
}
}
void sndDispatcher::syncSoundSettings() {
set_volume(ConfMan.getInt("sound_volume"));
if (ConfMan.getBool("enable_sound"))
enable();
else
disable();
}
} // namespace QDEngine
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