hlrc

/*

 * This file is part of hlrc_server

 *

 * Copyright(c) sschulz <AT> techfak.uni-bielefeld.de

 * http://opensource.cit-ec.de/projects/hlrc_server

 *

 * This file may be licensed under the terms of the

 * GNU General Public License Version 3 (the ``GPL''),

 * or (at your option) any later version.

 *

 * Software distributed under the License is distributed

 * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either

 * express or implied. See the GPL for the specific language

 * governing rights and limitations.

 *

 * You should have received a copy of the GPL along with this

 * program. If not, go to http://www.gnu.org/licenses/gpl.html

 * or write to the Free Software Foundation, Inc.,

 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 *

 * The development of this software was supported by the

 * Excellence Cluster EXC 277 Cognitive Interaction Technology.

 * The Excellence Cluster EXC 277 is a grant of the Deutsche

 * Forschungsgemeinschaft (DFG) in the context of the German

 * Excellence Initiative.

 *

 */

#include "Utterance.h"

using namespace std;

#define DEBUG_PRINT_PHONEMES 1

Utterance::Utterance() {

        playing = false;

        text = "UNINITIALISED UTTERANCE";

        audio_data = std::shared_ptr<AudioData>(new AudioData());

}

void Utterance::set_phoneme_vector(phonemes_vector_t p) {

        phonemes_vector = p;

}

void Utterance::set_text(string t) {

        text = t;

}

void Utterance::set_audio_data(std::shared_ptr<AudioData> a) {

        audio_data = a;

}

Utterance::~Utterance() {

}

string Utterance::get_text() {

        return text;

}

std::shared_ptr<AudioData> Utterance::get_audio_data() {

        return audio_data;

}

void Utterance::start_playback() {

        if (phonemes_vector.size() == 0) {

                printf("> we have an empty phoneme vector. not playing.\n");

                return;

        }

        // set iterator to start:

        phonemes_vector_iterator = phonemes_vector.begin();

        // fetch first end time

        symbol_duration_pair_t symbol_duration_pair = *phonemes_vector_iterator;

        symbol_end_time = std::chrono::steady_clock::now() + std::chrono::milliseconds(symbol_duration_pair.second);

        printf("> we have %d pairs\n", (int)phonemes_vector.size());

        // go!

        playing = true;

}

string Utterance::currently_active_phoneme() {

        // not active -> return

        if (!playing)

                return "";

        // empty phoneme list

        if (phonemes_vector.size() == 0)

                return "";

        std::chrono::time_point<std::chrono::steady_clock> now = std::chrono::steady_clock::now();

        while (now > symbol_end_time) {

                // fetch next phoneme:

                symbol_duration_pair_t symbol_duration_pair = *phonemes_vector_iterator;

                symbol_end_time = symbol_end_time + std::chrono::milliseconds(symbol_duration_pair.second);

                // printf("time: %d", symbol_duration_pair.second);

                // do we have to increment the iterator or are we done? (NOTE: -1 is necessary here!)

                if (phonemes_vector_iterator < phonemes_vector.end() - 1) {

                        phonemes_vector_iterator++;

                }

                else {

                        // reached end, stop playback

                        playing = false;

                        return "";

                        if (DEBUG_PRINT_PHONEMES)

                                printf("\n");

                }

        }

        // fetch active symbol:

        string symbol = ((symbol_duration_pair_t)*phonemes_vector_iterator).first;

        // printf("> active symbol = %s\n",symbol.c_str());

        if (DEBUG_PRINT_PHONEMES) {

                printf("%s ", symbol.c_str());

                fflush(stdout);

        }

        return symbol;

}

bool Utterance::is_playing() {

        return playing;

}