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.

*

*/

//converter from rsb utterance

    public:

        UtteranceRSB(rst::audition::Utterance rst_utterance){

            //set text:

            set_text(rst_utterance.textual_representation());

            //convert soundchunk to audio data:

            extract_audio_data(rst_utterance.audio());

            //convert phonemes:

            extract_phonemes(rst_utterance);

        }

        ~UtteranceRSB(){};

        void extract_audio_data(rst::audition::SoundChunk sound_chunk){

            //cout << sound_chunk.DebugString();

            //extract data:

            unsigned int audio_len = sound_chunk.data().length();

            char *audio_data_char = (char *)sound_chunk.data().c_str();

            //audio.samples = vector<char>(audio_data_char, audio_data_char+audio_len);

            audio_data->samples.resize(audio_len);

            audio_data->samples.assign(audio_data_char, audio_data_char+audio_len);

            printf("audio samplesize is %d bytes\n",(unsigned int)audio_data->samples.size());

            //extract format:

            audio_data->sample_signed = true;

            switch (sound_chunk.sample_type()){

                case(rst::audition::SoundChunk::SAMPLE_U8):  audio_data->sample_signed = false; //and fall through:

                case(rst::audition::SoundChunk::SAMPLE_S8):  audio_data->sample_bit =  8; break;

                case(rst::audition::SoundChunk::SAMPLE_U16): audio_data->sample_signed = false; //and fall through:

                case(rst::audition::SoundChunk::SAMPLE_S16): audio_data->sample_bit = 16; break;

                case(rst::audition::SoundChunk::SAMPLE_U24): audio_data->sample_signed = false; //and fall through:

                case(rst::audition::SoundChunk::SAMPLE_S24): audio_data->sample_bit = 24; break;

                default:

                    printf("> invalid sample type %d in RST SoundChunk! ignoring request!\n", sound_chunk.sample_type());

                    throw runtime_error("UtteranceRSB::convert_audio_data() unsupported sample type in rst::audition::SoundChunk");

            }

            //bitrate

            audio_data->sample_rate = sound_chunk.rate();

        //endianness

        if (sound_chunk.endianness() == rst::audition::SoundChunk::ENDIAN_LITTLE){

            audio_data->sample_big_endian = false;

        }else if (sound_chunk.endianness() == rst::audition::SoundChunk::ENDIAN_BIG){

            audio_data->sample_big_endian = true;

        }else{

            printf("> invalid SoundChunk byte_format");

            throw runtime_error("UtteranceRSB::convert_audio_data() unsupported byte_format in rst::audition::SoundChunk");

        }

        //number of channels

        audio_data->sample_channels = sound_chunk.channels();

        printf("> new AudioData: %s\n",audio_data->to_string().c_str());

    }

    void extract_phonemes(rst::audition::Utterance rst_utterance){

        //extract phoneme vector

        phonemes_vector.clear();

        for(int i=0; i<rst_utterance.phonemes().element().size(); i++){

            rst::audition::Phoneme rst_phoneme = rst_utterance.phonemes().element().Get(i);

            Utterance::symbol_duration_pair_t phoneme = make_pair(rst_phoneme.symbol(), rst_phoneme.duration());

            phonemes_vector.push_back(phoneme);

        }

    }