/***************************************************************************
 *   Copyright (C) 2016-2026 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 "replaygainreader.h"

ReplayGainReader::ReplayGainReader(AVFormatContext *ic)
{
    AVDictionaryEntry *t = nullptr;

    while((t = av_dict_get(ic->metadata, "REPLAYGAIN_ALBUM_GAIN", t, 0)))
        setValue(Qmmp::REPLAYGAIN_ALBUM_GAIN, QString::fromLatin1(t->value));

    t = nullptr;

    while((t = av_dict_get(ic->metadata, "REPLAYGAIN_ALBUM_PEAK", t, 0)))
        setValue(Qmmp::REPLAYGAIN_ALBUM_PEAK, QString::fromLatin1(t->value));

    t = nullptr;

    while((t = av_dict_get(ic->metadata, "REPLAYGAIN_TRACK_GAIN", t, 0)))
        setValue(Qmmp::REPLAYGAIN_TRACK_GAIN, QString::fromLatin1(t->value));

    t = nullptr;

    while((t = av_dict_get(ic->metadata, "REPLAYGAIN_TRACK_PEAK", t, 0)))
        setValue(Qmmp::REPLAYGAIN_TRACK_PEAK, QString::fromLatin1(t->value));
}

QMap <Qmmp::ReplayGainKey, double> ReplayGainReader::replayGainInfo() const
{
    return m_values;
}

void ReplayGainReader::setValue(Qmmp::ReplayGainKey key, QString value)
{
    value.remove(u" dB"_s);
    if(value.isEmpty())
        return;
    bool ok;
    double v = value.toDouble(&ok);
    if(ok)
        m_values[key] = v;
}
