3135d87218
Simple blocking of the SGSubsystem until the current TTS sample has finished playing, allowing a 0.5s gap between transmissions. Good radio comms!
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
// speech synthesis interface subsystem
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//
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// Written by Torsten Dreyer, started April 2014
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//
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// Copyright (C) 2014 Torsten Dreyer - torsten (at) t3r (dot) de
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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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "flitevoice.hxx"
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#include <Main/fg_props.hxx>
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#include <simgear/sound/sample_group.hxx>
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#include <flite_hts_engine.h>
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using std::string;
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#include "VoiceSynthesizer.hxx"
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FGFLITEVoice::FGFLITEVoice(FGVoiceMgr * mgr, const SGPropertyNode_ptr node, const char * sampleGroupRefName)
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: FGVoice(mgr), _synthesizer( NULL), _seconds_to_run(0.0)
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{
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_sampleName = node->getStringValue("desc", node->getPath().c_str());
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SGPath voice = globals->get_fg_root() / "ATC" /
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node->getStringValue("htsvoice", "cmu_us_arctic_slt.htsvoice");
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_synthesizer = new FLITEVoiceSynthesizer(voice.local8BitStr());
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SGSoundMgr *smgr = globals->get_subsystem<SGSoundMgr>();
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_sgr = smgr->find(sampleGroupRefName, true);
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_sgr->tie_to_listener();
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node->getNode("text", true)->addChangeListener(this);
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SG_LOG(SG_SOUND, SG_INFO, "FLITEVoice initialized for sample-group '" << sampleGroupRefName
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<< "'. Samples will be named '" << _sampleName << "' "
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<< "voice is '" << voice << "'");
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}
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FGFLITEVoice::~FGFLITEVoice()
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{
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delete _synthesizer;
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}
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void FGFLITEVoice::speak(const string & msg)
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{
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// this is called from voice.cxx:FGVoiceMgr::FGVoiceThread::run
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string s = simgear::strutils::strip(msg);
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if (false == s.empty()) {
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_sampleQueue.push(_synthesizer->synthesize(msg, 1.0, 0.5, 0.5));
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}
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}
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void FGFLITEVoice::update(double dt)
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{
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_seconds_to_run -= dt;
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if (_seconds_to_run < 0.0) {
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SGSharedPtr<SGSoundSample> sample = _sampleQueue.pop();
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if (sample.valid()) {
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_sgr->remove(_sampleName);
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_sgr->add(sample, _sampleName);
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_sgr->resume();
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_sgr->play(_sampleName, false);
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// Don't play any further TTS until we've finished playing this sample,
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// allowing 500ms for a gap between transmissions. Good radio comms!
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_seconds_to_run = 0.5 + ((float) sample->get_no_samples()) / ((float) sample->get_frequency());
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}
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}
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}
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