104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
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// _samplequeue.cxx -- Sound effect management class implementation
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//
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// Started by David Megginson, October 2001
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// (Reuses some code from main.cxx, probably by Curtis Olson)
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//
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// Copyright (C) 2001 Curtis L. Olson - http://www.flightgear.org/~curt
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifdef _MSC_VER
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#pragma warning (disable: 4786)
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#endif
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "sample_queue.hxx"
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#include <Main/fg_props.hxx>
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#include <simgear/sound/soundmgr_openal.hxx>
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#include <simgear/sound/sample_openal.hxx>
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FGSampleQueue::FGSampleQueue ( SGSoundMgr *smgr, const string &refname ) :
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last_pause( true ),
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last_volume( 0.0 ),
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_pause( fgGetNode("/sim/sound/pause") ),
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_volume( fgGetNode("/sim/sound/volume") )
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{
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SGSampleGroup::_smgr = smgr;
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SGSampleGroup::_smgr->add(this, refname);
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}
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FGSampleQueue::~FGSampleQueue ()
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{
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while ( _messages.size() > 0 ) {
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delete _messages.front();
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_messages.pop();
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}
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}
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void
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FGSampleQueue::update (double dt)
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{
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// command sound manger
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bool new_pause = _pause->getBoolValue();
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if ( new_pause != last_pause ) {
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if ( new_pause ) {
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suspend();
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} else {
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resume();
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}
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last_pause = new_pause;
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}
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double volume = _volume->getDoubleValue();
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if ( volume != last_volume ) {
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set_volume( volume );
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last_volume = volume;
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}
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// process mesage queue
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const string msgid = "Sequential Audio Message";
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bool now_playing = false;
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if ( exists( msgid ) ) {
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now_playing = is_playing( msgid );
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if ( !now_playing ) {
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// current message finished, stop and remove
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stop( msgid ); // removes source
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remove( msgid ); // removes buffer
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}
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}
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if ( !now_playing ) {
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// message queue idle, add next sound if we have one
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if ( _messages.size() > 0 ) {
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SGSampleGroup::add( _messages.front(), msgid );
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_messages.pop();
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play_once( msgid );
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}
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}
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SGSampleGroup::update(dt);
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}
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// end of _samplequeue.cxx
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