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/***************************************************************************
 *   Copyright (C) 2008-2016 by Ilya Kotov                                 *
 *   forkotov02@ya.ru                                                      *
 *                                                                         *
 *   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 2 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#include <stdint.h>
#include "wildmidihelper.h"
#include "decoder_wildmidi.h"

// Decoder class
DecoderWildMidi::DecoderWildMidi(const QString &path) : Decoder()
{
    m_path = path;
    midi_ptr =  0;
    m_sample_rate = 0;
}

DecoderWildMidi::~DecoderWildMidi()
{
    if(midi_ptr)
    {
        WildMidiHelper::instance()->removePtr(midi_ptr);
        WildMidi_Close(midi_ptr);
    }
}

bool DecoderWildMidi::initialize()
{
    m_totalTime = 0;

    if(!WildMidiHelper::instance()->initialize())
    {
        qWarning("DecoderWildMidi: initialization failed");
        return false;
    }
    WildMidiHelper::instance()->readSettings();
    midi_ptr = WildMidi_Open (m_path.toLocal8Bit().constData());

    if(!midi_ptr)
    {
        qWarning("DecoderWildMidi: unable to open file");
        return false;
    }
    WildMidiHelper::instance()->addPtr(midi_ptr);


    m_sample_rate = WildMidiHelper::instance()->sampleRate();
    _WM_Info *wm_info = WildMidi_GetInfo(midi_ptr);
    m_totalTime = (qint64)wm_info->approx_total_samples * 1000 / WildMidiHelper::instance()->sampleRate();
    configure(m_sample_rate, 2, Qmmp::PCM_S16LE);
    qDebug("DecoderWildMidi: initialize succes");
    return true;
}

qint64 DecoderWildMidi::totalTime() const
{
    return m_totalTime;
}

void DecoderWildMidi::seek(qint64 pos)
{
    ulong sample = (ulong)m_sample_rate * pos / 1000;
    WildMidi_FastSeek(midi_ptr, &sample);
}